2 * mdadm - Intel(R) Matrix Storage Manager Support
4 * Copyright (C) 2002-2008 Intel Corporation
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
20 #define HAVE_STDINT_H 1
24 #include "platform-intel.h"
30 /* MPB == Metadata Parameter Block */
31 #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
32 #define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
33 #define MPB_VERSION_RAID0 "1.0.00"
34 #define MPB_VERSION_RAID1 "1.1.00"
35 #define MPB_VERSION_MANY_VOLUMES_PER_ARRAY "1.2.00"
36 #define MPB_VERSION_3OR4_DISK_ARRAY "1.2.01"
37 #define MPB_VERSION_RAID5 "1.2.02"
38 #define MPB_VERSION_5OR6_DISK_ARRAY "1.2.04"
39 #define MPB_VERSION_CNG "1.2.06"
40 #define MPB_VERSION_ATTRIBS "1.3.00"
41 #define MAX_SIGNATURE_LENGTH 32
42 #define MAX_RAID_SERIAL_LEN 16
45 #define MPB_ATTRIB_RAID0 __cpu_to_le32(0x00000001)
47 #define MPB_ATTRIB_RAID1 __cpu_to_le32(0x00000002)
49 #define MPB_ATTRIB_RAID10 __cpu_to_le32(0x00000004)
51 #define MPB_ATTRIB_RAID1E __cpu_to_le32(0x00000008)
53 #define MPB_ATTRIB_RAID5 __cpu_to_le32(0x00000010)
54 /* supports RAID CNG */
55 #define MPB_ATTRIB_RAIDCNG __cpu_to_le32(0x00000020)
56 /* supports expanded stripe sizes of 256K, 512K and 1MB */
57 #define MPB_ATTRIB_EXP_STRIPE_SIZE __cpu_to_le32(0x00000040)
59 /* The OROM Support RST Caching of Volumes */
60 #define MPB_ATTRIB_NVM __cpu_to_le32(0x02000000)
61 /* The OROM supports creating disks greater than 2TB */
62 #define MPB_ATTRIB_2TB_DISK __cpu_to_le32(0x04000000)
63 /* The OROM supports Bad Block Management */
64 #define MPB_ATTRIB_BBM __cpu_to_le32(0x08000000)
66 /* THe OROM Supports NVM Caching of Volumes */
67 #define MPB_ATTRIB_NEVER_USE2 __cpu_to_le32(0x10000000)
68 /* The OROM supports creating volumes greater than 2TB */
69 #define MPB_ATTRIB_2TB __cpu_to_le32(0x20000000)
70 /* originally for PMP, now it's wasted b/c. Never use this bit! */
71 #define MPB_ATTRIB_NEVER_USE __cpu_to_le32(0x40000000)
72 /* Verify MPB contents against checksum after reading MPB */
73 #define MPB_ATTRIB_CHECKSUM_VERIFY __cpu_to_le32(0x80000000)
75 /* Define all supported attributes that have to be accepted by mdadm
77 #define MPB_ATTRIB_SUPPORTED (MPB_ATTRIB_CHECKSUM_VERIFY | \
79 MPB_ATTRIB_2TB_DISK | \
84 MPB_ATTRIB_EXP_STRIPE_SIZE | \
87 /* Define attributes that are unused but not harmful */
88 #define MPB_ATTRIB_IGNORED (MPB_ATTRIB_NEVER_USE)
90 #define MPB_SECTOR_CNT 2210
91 #define IMSM_RESERVED_SECTORS 4096
92 #define NUM_BLOCKS_DIRTY_STRIPE_REGION 2056
93 #define SECT_PER_MB_SHIFT 11
94 #define MAX_SECTOR_SIZE 4096
96 /* Disk configuration info. */
97 #define IMSM_MAX_DEVICES 255
99 __u8 serial
[MAX_RAID_SERIAL_LEN
];/* 0xD8 - 0xE7 ascii serial number */
100 __u32 total_blocks_lo
; /* 0xE8 - 0xEB total blocks lo */
101 __u32 scsi_id
; /* 0xEC - 0xEF scsi ID */
102 #define SPARE_DISK __cpu_to_le32(0x01) /* Spare */
103 #define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */
104 #define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */
105 __u32 status
; /* 0xF0 - 0xF3 */
106 __u32 owner_cfg_num
; /* which config 0,1,2... owns this disk */
107 __u32 total_blocks_hi
; /* 0xF4 - 0xF5 total blocks hi */
108 #define IMSM_DISK_FILLERS 3
109 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF5 - 0x107 MPB_DISK_FILLERS for future expansion */
112 /* map selector for map managment
118 /* RAID map configuration infos. */
120 __u32 pba_of_lba0_lo
; /* start address of partition */
121 __u32 blocks_per_member_lo
;/* blocks per member */
122 __u32 num_data_stripes_lo
; /* number of data stripes */
123 __u16 blocks_per_strip
;
124 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
125 #define IMSM_T_STATE_NORMAL 0
126 #define IMSM_T_STATE_UNINITIALIZED 1
127 #define IMSM_T_STATE_DEGRADED 2
128 #define IMSM_T_STATE_FAILED 3
130 #define IMSM_T_RAID0 0
131 #define IMSM_T_RAID1 1
132 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
133 __u8 num_members
; /* number of member disks */
134 __u8 num_domains
; /* number of parity domains */
135 __u8 failed_disk_num
; /* valid only when state is degraded */
137 __u32 pba_of_lba0_hi
;
138 __u32 blocks_per_member_hi
;
139 __u32 num_data_stripes_hi
;
140 __u32 filler
[4]; /* expansion area */
141 #define IMSM_ORD_REBUILD (1 << 24)
142 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
143 * top byte contains some flags
145 } __attribute__ ((packed
));
148 __u32 curr_migr_unit
;
149 __u32 checkpoint_id
; /* id to access curr_migr_unit */
150 __u8 migr_state
; /* Normal or Migrating */
152 #define MIGR_REBUILD 1
153 #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */
154 #define MIGR_GEN_MIGR 3
155 #define MIGR_STATE_CHANGE 4
156 #define MIGR_REPAIR 5
157 __u8 migr_type
; /* Initializing, Rebuilding, ... */
159 __u8 fs_state
; /* fast-sync state for CnG (0xff == disabled) */
160 __u16 verify_errors
; /* number of mismatches */
161 __u16 bad_blocks
; /* number of bad blocks during verify */
163 struct imsm_map map
[1];
164 /* here comes another one if migr_state */
165 } __attribute__ ((packed
));
168 __u8 volume
[MAX_RAID_SERIAL_LEN
];
171 #define DEV_BOOTABLE __cpu_to_le32(0x01)
172 #define DEV_BOOT_DEVICE __cpu_to_le32(0x02)
173 #define DEV_READ_COALESCING __cpu_to_le32(0x04)
174 #define DEV_WRITE_COALESCING __cpu_to_le32(0x08)
175 #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10)
176 #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20)
177 #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40)
178 #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80)
179 #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100)
180 #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200)
181 #define DEV_CLONE_N_GO __cpu_to_le32(0x400)
182 #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800)
183 #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000)
184 __u32 status
; /* Persistent RaidDev status */
185 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
189 __u8 cng_master_disk
;
193 #define IMSM_DEV_FILLERS 10
194 __u32 filler
[IMSM_DEV_FILLERS
];
196 } __attribute__ ((packed
));
199 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
200 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
201 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
202 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
203 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
204 __u32 error_log_size
; /* 0x30 - 0x33 in bytes */
205 __u32 attributes
; /* 0x34 - 0x37 */
206 __u8 num_disks
; /* 0x38 Number of configured disks */
207 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
208 __u8 error_log_pos
; /* 0x3A */
209 __u8 fill
[1]; /* 0x3B */
210 __u32 cache_size
; /* 0x3c - 0x40 in mb */
211 __u32 orig_family_num
; /* 0x40 - 0x43 original family num */
212 __u32 pwr_cycle_count
; /* 0x44 - 0x47 simulated power cycle count for array */
213 __u32 bbm_log_size
; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */
214 #define IMSM_FILLERS 35
215 __u32 filler
[IMSM_FILLERS
]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */
216 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
217 /* here comes imsm_dev[num_raid_devs] */
218 /* here comes BBM logs */
219 } __attribute__ ((packed
));
221 #define BBM_LOG_MAX_ENTRIES 254
222 #define BBM_LOG_MAX_LBA_ENTRY_VAL 256 /* Represents 256 LBAs */
223 #define BBM_LOG_SIGNATURE 0xabadb10c
225 struct bbm_log_block_addr
{
228 } __attribute__ ((__packed__
));
230 struct bbm_log_entry
{
231 __u8 marked_count
; /* Number of blocks marked - 1 */
232 __u8 disk_ordinal
; /* Disk entry within the imsm_super */
233 struct bbm_log_block_addr defective_block_start
;
234 } __attribute__ ((__packed__
));
237 __u32 signature
; /* 0xABADB10C */
239 struct bbm_log_entry marked_block_entries
[BBM_LOG_MAX_ENTRIES
];
240 } __attribute__ ((__packed__
));
243 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
246 #define RAID_DISK_RESERVED_BLOCKS_IMSM_HI 2209
248 #define GEN_MIGR_AREA_SIZE 2048 /* General Migration Copy Area size in blocks */
250 #define MIGR_REC_BUF_SECTORS 1 /* size of migr_record i/o buffer in sectors */
251 #define MIGR_REC_SECTOR_POSITION 1 /* migr_record position offset on disk,
252 * MIGR_REC_BUF_SECTORS <= MIGR_REC_SECTOR_POS
255 #define UNIT_SRC_NORMAL 0 /* Source data for curr_migr_unit must
256 * be recovered using srcMap */
257 #define UNIT_SRC_IN_CP_AREA 1 /* Source data for curr_migr_unit has
258 * already been migrated and must
259 * be recovered from checkpoint area */
261 __u32 rec_status
; /* Status used to determine how to restart
262 * migration in case it aborts
264 __u32 curr_migr_unit
; /* 0..numMigrUnits-1 */
265 __u32 family_num
; /* Family number of MPB
266 * containing the RaidDev
267 * that is migrating */
268 __u32 ascending_migr
; /* True if migrating in increasing
270 __u32 blocks_per_unit
; /* Num disk blocks per unit of operation */
271 __u32 dest_depth_per_unit
; /* Num member blocks each destMap
273 * advances per unit-of-operation */
274 __u32 ckpt_area_pba
; /* Pba of first block of ckpt copy area */
275 __u32 dest_1st_member_lba
; /* First member lba on first
276 * stripe of destination */
277 __u32 num_migr_units
; /* Total num migration units-of-op */
278 __u32 post_migr_vol_cap
; /* Size of volume after
279 * migration completes */
280 __u32 post_migr_vol_cap_hi
; /* Expansion space for LBA64 */
281 __u32 ckpt_read_disk_num
; /* Which member disk in destSubMap[0] the
282 * migration ckpt record was read from
283 * (for recovered migrations) */
284 } __attribute__ ((__packed__
));
289 * 2: metadata does not match
297 struct md_list
*next
;
300 #define pr_vrb(fmt, arg...) (void) (verbose && pr_err(fmt, ##arg))
302 static __u8
migr_type(struct imsm_dev
*dev
)
304 if (dev
->vol
.migr_type
== MIGR_VERIFY
&&
305 dev
->status
& DEV_VERIFY_AND_FIX
)
308 return dev
->vol
.migr_type
;
311 static void set_migr_type(struct imsm_dev
*dev
, __u8 migr_type
)
313 /* for compatibility with older oroms convert MIGR_REPAIR, into
314 * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status
316 if (migr_type
== MIGR_REPAIR
) {
317 dev
->vol
.migr_type
= MIGR_VERIFY
;
318 dev
->status
|= DEV_VERIFY_AND_FIX
;
320 dev
->vol
.migr_type
= migr_type
;
321 dev
->status
&= ~DEV_VERIFY_AND_FIX
;
325 static unsigned int sector_count(__u32 bytes
, unsigned int sector_size
)
327 return ROUND_UP(bytes
, sector_size
) / sector_size
;
330 static unsigned int mpb_sectors(struct imsm_super
*mpb
,
331 unsigned int sector_size
)
333 return sector_count(__le32_to_cpu(mpb
->mpb_size
), sector_size
);
337 struct imsm_dev
*dev
;
338 struct intel_dev
*next
;
343 enum sys_dev_type type
;
346 struct intel_hba
*next
;
353 /* internal representation of IMSM metadata */
356 void *buf
; /* O_DIRECT buffer for reading/writing metadata */
357 struct imsm_super
*anchor
; /* immovable parameters */
360 void *migr_rec_buf
; /* buffer for I/O operations */
361 struct migr_record
*migr_rec
; /* migration record */
363 int clean_migration_record_by_mdmon
; /* when reshape is switched to next
364 array, it indicates that mdmon is allowed to clean migration
366 size_t len
; /* size of the 'buf' allocation */
367 size_t extra_space
; /* extra space in 'buf' that is not used yet */
368 void *next_buf
; /* for realloc'ing buf from the manager */
370 int updates_pending
; /* count of pending updates for mdmon */
371 int current_vol
; /* index of raid device undergoing creation */
372 unsigned long long create_offset
; /* common start for 'current_vol' */
373 __u32 random
; /* random data for seeding new family numbers */
374 struct intel_dev
*devlist
;
375 unsigned int sector_size
; /* sector size of used member drives */
379 __u8 serial
[MAX_RAID_SERIAL_LEN
];
382 struct imsm_disk disk
;
385 struct extent
*e
; /* for determining freespace @ create */
386 int raiddisk
; /* slot to fill in autolayout */
388 } *disks
, *current_disk
;
389 struct dl
*disk_mgmt_list
; /* list of disks to add/remove while mdmon
391 struct dl
*missing
; /* disks removed while we weren't looking */
392 struct bbm_log
*bbm_log
;
393 struct intel_hba
*hba
; /* device path of the raid controller for this metadata */
394 const struct imsm_orom
*orom
; /* platform firmware support */
395 struct intel_super
*next
; /* (temp) list for disambiguating family_num */
396 struct md_bb bb
; /* memory for get_bad_blocks call */
400 struct imsm_disk disk
;
401 #define IMSM_UNKNOWN_OWNER (-1)
403 struct intel_disk
*next
;
407 unsigned long long start
, size
;
410 /* definitions of reshape process types */
411 enum imsm_reshape_type
{
417 /* definition of messages passed to imsm_process_update */
418 enum imsm_update_type
{
419 update_activate_spare
,
423 update_add_remove_disk
,
424 update_reshape_container_disks
,
425 update_reshape_migration
,
427 update_general_migration_checkpoint
,
429 update_prealloc_badblocks_mem
,
432 struct imsm_update_activate_spare
{
433 enum imsm_update_type type
;
437 struct imsm_update_activate_spare
*next
;
443 unsigned long long size
;
450 enum takeover_direction
{
454 struct imsm_update_takeover
{
455 enum imsm_update_type type
;
457 enum takeover_direction direction
;
460 struct imsm_update_reshape
{
461 enum imsm_update_type type
;
465 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
468 struct imsm_update_reshape_migration
{
469 enum imsm_update_type type
;
472 /* fields for array migration changes
479 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
482 struct imsm_update_size_change
{
483 enum imsm_update_type type
;
488 struct imsm_update_general_migration_checkpoint
{
489 enum imsm_update_type type
;
490 __u32 curr_migr_unit
;
494 __u8 serial
[MAX_RAID_SERIAL_LEN
];
497 struct imsm_update_create_array
{
498 enum imsm_update_type type
;
503 struct imsm_update_kill_array
{
504 enum imsm_update_type type
;
508 struct imsm_update_rename_array
{
509 enum imsm_update_type type
;
510 __u8 name
[MAX_RAID_SERIAL_LEN
];
514 struct imsm_update_add_remove_disk
{
515 enum imsm_update_type type
;
518 struct imsm_update_prealloc_bb_mem
{
519 enum imsm_update_type type
;
522 static const char *_sys_dev_type
[] = {
523 [SYS_DEV_UNKNOWN
] = "Unknown",
524 [SYS_DEV_SAS
] = "SAS",
525 [SYS_DEV_SATA
] = "SATA",
526 [SYS_DEV_NVME
] = "NVMe",
527 [SYS_DEV_VMD
] = "VMD"
530 const char *get_sys_dev_type(enum sys_dev_type type
)
532 if (type
>= SYS_DEV_MAX
)
533 type
= SYS_DEV_UNKNOWN
;
535 return _sys_dev_type
[type
];
538 static struct intel_hba
* alloc_intel_hba(struct sys_dev
*device
)
540 struct intel_hba
*result
= xmalloc(sizeof(*result
));
542 result
->type
= device
->type
;
543 result
->path
= xstrdup(device
->path
);
545 if (result
->path
&& (result
->pci_id
= strrchr(result
->path
, '/')) != NULL
)
551 static struct intel_hba
* find_intel_hba(struct intel_hba
*hba
, struct sys_dev
*device
)
553 struct intel_hba
*result
;
555 for (result
= hba
; result
; result
= result
->next
) {
556 if (result
->type
== device
->type
&& strcmp(result
->path
, device
->path
) == 0)
562 static int attach_hba_to_super(struct intel_super
*super
, struct sys_dev
*device
)
564 struct intel_hba
*hba
;
566 /* check if disk attached to Intel HBA */
567 hba
= find_intel_hba(super
->hba
, device
);
570 /* Check if HBA is already attached to super */
571 if (super
->hba
== NULL
) {
572 super
->hba
= alloc_intel_hba(device
);
577 /* Intel metadata allows for all disks attached to the same type HBA.
578 * Do not support HBA types mixing
580 if (device
->type
!= hba
->type
)
583 /* Multiple same type HBAs can be used if they share the same OROM */
584 const struct imsm_orom
*device_orom
= get_orom_by_device_id(device
->dev_id
);
586 if (device_orom
!= super
->orom
)
592 hba
->next
= alloc_intel_hba(device
);
596 static struct sys_dev
* find_disk_attached_hba(int fd
, const char *devname
)
598 struct sys_dev
*list
, *elem
;
601 if ((list
= find_intel_devices()) == NULL
)
605 disk_path
= (char *) devname
;
607 disk_path
= diskfd_to_devpath(fd
);
612 for (elem
= list
; elem
; elem
= elem
->next
)
613 if (path_attached_to_hba(disk_path
, elem
->path
))
616 if (disk_path
!= devname
)
622 static int find_intel_hba_capability(int fd
, struct intel_super
*super
,
625 static struct supertype
*match_metadata_desc_imsm(char *arg
)
627 struct supertype
*st
;
629 if (strcmp(arg
, "imsm") != 0 &&
630 strcmp(arg
, "default") != 0
634 st
= xcalloc(1, sizeof(*st
));
635 st
->ss
= &super_imsm
;
636 st
->max_devs
= IMSM_MAX_DEVICES
;
637 st
->minor_version
= 0;
643 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
645 return &mpb
->sig
[MPB_SIG_LEN
];
649 /* retrieve a disk directly from the anchor when the anchor is known to be
650 * up-to-date, currently only at load time
652 static struct imsm_disk
*__get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
654 if (index
>= mpb
->num_disks
)
656 return &mpb
->disk
[index
];
659 /* retrieve the disk description based on a index of the disk
662 static struct dl
*get_imsm_dl_disk(struct intel_super
*super
, __u8 index
)
666 for (d
= super
->disks
; d
; d
= d
->next
)
667 if (d
->index
== index
)
672 /* retrieve a disk from the parsed metadata */
673 static struct imsm_disk
*get_imsm_disk(struct intel_super
*super
, __u8 index
)
677 dl
= get_imsm_dl_disk(super
, index
);
684 /* generate a checksum directly from the anchor when the anchor is known to be
685 * up-to-date, currently only at load or write_super after coalescing
687 static __u32
__gen_imsm_checksum(struct imsm_super
*mpb
)
689 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
690 __u32
*p
= (__u32
*) mpb
;
694 sum
+= __le32_to_cpu(*p
);
698 return sum
- __le32_to_cpu(mpb
->check_sum
);
701 static size_t sizeof_imsm_map(struct imsm_map
*map
)
703 return sizeof(struct imsm_map
) + sizeof(__u32
) * (map
->num_members
- 1);
706 struct imsm_map
*get_imsm_map(struct imsm_dev
*dev
, int second_map
)
708 /* A device can have 2 maps if it is in the middle of a migration.
710 * MAP_0 - we return the first map
711 * MAP_1 - we return the second map if it exists, else NULL
712 * MAP_X - we return the second map if it exists, else the first
714 struct imsm_map
*map
= &dev
->vol
.map
[0];
715 struct imsm_map
*map2
= NULL
;
717 if (dev
->vol
.migr_state
)
718 map2
= (void *)map
+ sizeof_imsm_map(map
);
720 switch (second_map
) {
737 /* return the size of the device.
738 * migr_state increases the returned size if map[0] were to be duplicated
740 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
, int migr_state
)
742 size_t size
= sizeof(*dev
) - sizeof(struct imsm_map
) +
743 sizeof_imsm_map(get_imsm_map(dev
, MAP_0
));
745 /* migrating means an additional map */
746 if (dev
->vol
.migr_state
)
747 size
+= sizeof_imsm_map(get_imsm_map(dev
, MAP_1
));
749 size
+= sizeof_imsm_map(get_imsm_map(dev
, MAP_0
));
755 /* retrieve disk serial number list from a metadata update */
756 static struct disk_info
*get_disk_info(struct imsm_update_create_array
*update
)
759 struct disk_info
*inf
;
761 inf
= u
+ sizeof(*update
) - sizeof(struct imsm_dev
) +
762 sizeof_imsm_dev(&update
->dev
, 0);
768 static struct imsm_dev
*__get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
774 if (index
>= mpb
->num_raid_devs
)
777 /* devices start after all disks */
778 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
780 for (i
= 0; i
<= index
; i
++)
782 return _mpb
+ offset
;
784 offset
+= sizeof_imsm_dev(_mpb
+ offset
, 0);
789 static struct imsm_dev
*get_imsm_dev(struct intel_super
*super
, __u8 index
)
791 struct intel_dev
*dv
;
793 if (index
>= super
->anchor
->num_raid_devs
)
795 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
796 if (dv
->index
== index
)
801 static inline unsigned long long __le48_to_cpu(const struct bbm_log_block_addr
804 return ((((__u64
)__le32_to_cpu(addr
->dw1
)) << 16) |
805 __le16_to_cpu(addr
->w1
));
808 static inline struct bbm_log_block_addr
__cpu_to_le48(unsigned long long sec
)
810 struct bbm_log_block_addr addr
;
812 addr
.w1
= __cpu_to_le16((__u16
)(sec
& 0xffff));
813 addr
.dw1
= __cpu_to_le32((__u32
)(sec
>> 16) & 0xffffffff);
818 /* get size of the bbm log */
819 static __u32
get_imsm_bbm_log_size(struct bbm_log
*log
)
821 if (!log
|| log
->entry_count
== 0)
824 return sizeof(log
->signature
) +
825 sizeof(log
->entry_count
) +
826 log
->entry_count
* sizeof(struct bbm_log_entry
);
829 /* check if bad block is not partially stored in bbm log */
830 static int is_stored_in_bbm(struct bbm_log
*log
, const __u8 idx
, const unsigned
831 long long sector
, const int length
, __u32
*pos
)
835 for (i
= *pos
; i
< log
->entry_count
; i
++) {
836 struct bbm_log_entry
*entry
= &log
->marked_block_entries
[i
];
837 unsigned long long bb_start
;
838 unsigned long long bb_end
;
840 bb_start
= __le48_to_cpu(&entry
->defective_block_start
);
841 bb_end
= bb_start
+ (entry
->marked_count
+ 1);
843 if ((entry
->disk_ordinal
== idx
) && (bb_start
>= sector
) &&
844 (bb_end
<= sector
+ length
)) {
852 /* record new bad block in bbm log */
853 static int record_new_badblock(struct bbm_log
*log
, const __u8 idx
, unsigned
854 long long sector
, int length
)
858 struct bbm_log_entry
*entry
= NULL
;
860 while (is_stored_in_bbm(log
, idx
, sector
, length
, &pos
)) {
861 struct bbm_log_entry
*e
= &log
->marked_block_entries
[pos
];
863 if ((e
->marked_count
+ 1 == BBM_LOG_MAX_LBA_ENTRY_VAL
) &&
864 (__le48_to_cpu(&e
->defective_block_start
) == sector
)) {
865 sector
+= BBM_LOG_MAX_LBA_ENTRY_VAL
;
866 length
-= BBM_LOG_MAX_LBA_ENTRY_VAL
;
875 int cnt
= (length
<= BBM_LOG_MAX_LBA_ENTRY_VAL
) ? length
:
876 BBM_LOG_MAX_LBA_ENTRY_VAL
;
877 entry
->defective_block_start
= __cpu_to_le48(sector
);
878 entry
->marked_count
= cnt
- 1;
885 new_bb
= ROUND_UP(length
, BBM_LOG_MAX_LBA_ENTRY_VAL
) /
886 BBM_LOG_MAX_LBA_ENTRY_VAL
;
887 if (log
->entry_count
+ new_bb
> BBM_LOG_MAX_ENTRIES
)
891 int cnt
= (length
<= BBM_LOG_MAX_LBA_ENTRY_VAL
) ? length
:
892 BBM_LOG_MAX_LBA_ENTRY_VAL
;
893 struct bbm_log_entry
*entry
=
894 &log
->marked_block_entries
[log
->entry_count
];
896 entry
->defective_block_start
= __cpu_to_le48(sector
);
897 entry
->marked_count
= cnt
- 1;
898 entry
->disk_ordinal
= idx
;
909 /* clear all bad blocks for given disk */
910 static void clear_disk_badblocks(struct bbm_log
*log
, const __u8 idx
)
914 while (i
< log
->entry_count
) {
915 struct bbm_log_entry
*entries
= log
->marked_block_entries
;
917 if (entries
[i
].disk_ordinal
== idx
) {
918 if (i
< log
->entry_count
- 1)
919 entries
[i
] = entries
[log
->entry_count
- 1];
927 /* clear given bad block */
928 static int clear_badblock(struct bbm_log
*log
, const __u8 idx
, const unsigned
929 long long sector
, const int length
) {
932 while (i
< log
->entry_count
) {
933 struct bbm_log_entry
*entries
= log
->marked_block_entries
;
935 if ((entries
[i
].disk_ordinal
== idx
) &&
936 (__le48_to_cpu(&entries
[i
].defective_block_start
) ==
937 sector
) && (entries
[i
].marked_count
+ 1 == length
)) {
938 if (i
< log
->entry_count
- 1)
939 entries
[i
] = entries
[log
->entry_count
- 1];
948 #endif /* MDASSEMBLE */
950 /* allocate and load BBM log from metadata */
951 static int load_bbm_log(struct intel_super
*super
)
953 struct imsm_super
*mpb
= super
->anchor
;
954 __u32 bbm_log_size
= __le32_to_cpu(mpb
->bbm_log_size
);
956 super
->bbm_log
= xcalloc(1, sizeof(struct bbm_log
));
961 struct bbm_log
*log
= (void *)mpb
+
962 __le32_to_cpu(mpb
->mpb_size
) - bbm_log_size
;
966 if (bbm_log_size
< sizeof(log
->signature
) +
967 sizeof(log
->entry_count
))
970 entry_count
= __le32_to_cpu(log
->entry_count
);
971 if ((__le32_to_cpu(log
->signature
) != BBM_LOG_SIGNATURE
) ||
972 (entry_count
> BBM_LOG_MAX_ENTRIES
))
976 sizeof(log
->signature
) + sizeof(log
->entry_count
) +
977 entry_count
* sizeof(struct bbm_log_entry
))
980 memcpy(super
->bbm_log
, log
, bbm_log_size
);
982 super
->bbm_log
->signature
= __cpu_to_le32(BBM_LOG_SIGNATURE
);
983 super
->bbm_log
->entry_count
= 0;
989 /* checks if bad block is within volume boundaries */
990 static int is_bad_block_in_volume(const struct bbm_log_entry
*entry
,
991 const unsigned long long start_sector
,
992 const unsigned long long size
)
994 unsigned long long bb_start
;
995 unsigned long long bb_end
;
997 bb_start
= __le48_to_cpu(&entry
->defective_block_start
);
998 bb_end
= bb_start
+ (entry
->marked_count
+ 1);
1000 if (((bb_start
>= start_sector
) && (bb_start
< start_sector
+ size
)) ||
1001 ((bb_end
>= start_sector
) && (bb_end
<= start_sector
+ size
)))
1007 /* get list of bad blocks on a drive for a volume */
1008 static void get_volume_badblocks(const struct bbm_log
*log
, const __u8 idx
,
1009 const unsigned long long start_sector
,
1010 const unsigned long long size
,
1016 for (i
= 0; i
< log
->entry_count
; i
++) {
1017 const struct bbm_log_entry
*ent
=
1018 &log
->marked_block_entries
[i
];
1019 struct md_bb_entry
*bb
;
1021 if ((ent
->disk_ordinal
== idx
) &&
1022 is_bad_block_in_volume(ent
, start_sector
, size
)) {
1024 if (!bbs
->entries
) {
1025 bbs
->entries
= xmalloc(BBM_LOG_MAX_ENTRIES
*
1031 bb
= &bbs
->entries
[count
++];
1032 bb
->sector
= __le48_to_cpu(&ent
->defective_block_start
);
1033 bb
->length
= ent
->marked_count
+ 1;
1041 * == MAP_0 get first map
1042 * == MAP_1 get second map
1043 * == MAP_X than get map according to the current migr_state
1045 static __u32
get_imsm_ord_tbl_ent(struct imsm_dev
*dev
,
1049 struct imsm_map
*map
;
1051 map
= get_imsm_map(dev
, second_map
);
1053 /* top byte identifies disk under rebuild */
1054 return __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
1057 #define ord_to_idx(ord) (((ord) << 8) >> 8)
1058 static __u32
get_imsm_disk_idx(struct imsm_dev
*dev
, int slot
, int second_map
)
1060 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, second_map
);
1062 return ord_to_idx(ord
);
1065 static void set_imsm_ord_tbl_ent(struct imsm_map
*map
, int slot
, __u32 ord
)
1067 map
->disk_ord_tbl
[slot
] = __cpu_to_le32(ord
);
1070 static int get_imsm_disk_slot(struct imsm_map
*map
, unsigned idx
)
1075 for (slot
= 0; slot
< map
->num_members
; slot
++) {
1076 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
1077 if (ord_to_idx(ord
) == idx
)
1084 static int get_imsm_raid_level(struct imsm_map
*map
)
1086 if (map
->raid_level
== 1) {
1087 if (map
->num_members
== 2)
1093 return map
->raid_level
;
1096 static int cmp_extent(const void *av
, const void *bv
)
1098 const struct extent
*a
= av
;
1099 const struct extent
*b
= bv
;
1100 if (a
->start
< b
->start
)
1102 if (a
->start
> b
->start
)
1107 static int count_memberships(struct dl
*dl
, struct intel_super
*super
)
1109 int memberships
= 0;
1112 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1113 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1114 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1116 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
1123 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
);
1125 static int split_ull(unsigned long long n
, __u32
*lo
, __u32
*hi
)
1127 if (lo
== 0 || hi
== 0)
1129 *lo
= __le32_to_cpu((unsigned)n
);
1130 *hi
= __le32_to_cpu((unsigned)(n
>> 32));
1134 static unsigned long long join_u32(__u32 lo
, __u32 hi
)
1136 return (unsigned long long)__le32_to_cpu(lo
) |
1137 (((unsigned long long)__le32_to_cpu(hi
)) << 32);
1140 static unsigned long long total_blocks(struct imsm_disk
*disk
)
1144 return join_u32(disk
->total_blocks_lo
, disk
->total_blocks_hi
);
1147 static unsigned long long pba_of_lba0(struct imsm_map
*map
)
1151 return join_u32(map
->pba_of_lba0_lo
, map
->pba_of_lba0_hi
);
1154 static unsigned long long blocks_per_member(struct imsm_map
*map
)
1158 return join_u32(map
->blocks_per_member_lo
, map
->blocks_per_member_hi
);
1161 static unsigned long long num_data_stripes(struct imsm_map
*map
)
1165 return join_u32(map
->num_data_stripes_lo
, map
->num_data_stripes_hi
);
1168 static void set_total_blocks(struct imsm_disk
*disk
, unsigned long long n
)
1170 split_ull(n
, &disk
->total_blocks_lo
, &disk
->total_blocks_hi
);
1173 static void set_pba_of_lba0(struct imsm_map
*map
, unsigned long long n
)
1175 split_ull(n
, &map
->pba_of_lba0_lo
, &map
->pba_of_lba0_hi
);
1178 static void set_blocks_per_member(struct imsm_map
*map
, unsigned long long n
)
1180 split_ull(n
, &map
->blocks_per_member_lo
, &map
->blocks_per_member_hi
);
1183 static void set_num_data_stripes(struct imsm_map
*map
, unsigned long long n
)
1185 split_ull(n
, &map
->num_data_stripes_lo
, &map
->num_data_stripes_hi
);
1188 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
1190 /* find a list of used extents on the given physical device */
1191 struct extent
*rv
, *e
;
1193 int memberships
= count_memberships(dl
, super
);
1196 /* trim the reserved area for spares, so they can join any array
1197 * regardless of whether the OROM has assigned sectors from the
1198 * IMSM_RESERVED_SECTORS region
1200 if (dl
->index
== -1)
1201 reservation
= imsm_min_reserved_sectors(super
);
1203 reservation
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1205 rv
= xcalloc(sizeof(struct extent
), (memberships
+ 1));
1208 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1209 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1210 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1212 if (get_imsm_disk_slot(map
, dl
->index
) >= 0) {
1213 e
->start
= pba_of_lba0(map
);
1214 e
->size
= blocks_per_member(map
);
1218 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
1220 /* determine the start of the metadata
1221 * when no raid devices are defined use the default
1222 * ...otherwise allow the metadata to truncate the value
1223 * as is the case with older versions of imsm
1226 struct extent
*last
= &rv
[memberships
- 1];
1227 unsigned long long remainder
;
1229 remainder
= total_blocks(&dl
->disk
) - (last
->start
+ last
->size
);
1230 /* round down to 1k block to satisfy precision of the kernel
1234 /* make sure remainder is still sane */
1235 if (remainder
< (unsigned)ROUND_UP(super
->len
, 512) >> 9)
1236 remainder
= ROUND_UP(super
->len
, 512) >> 9;
1237 if (reservation
> remainder
)
1238 reservation
= remainder
;
1240 e
->start
= total_blocks(&dl
->disk
) - reservation
;
1245 /* try to determine how much space is reserved for metadata from
1246 * the last get_extents() entry, otherwise fallback to the
1249 static __u32
imsm_reserved_sectors(struct intel_super
*super
, struct dl
*dl
)
1255 /* for spares just return a minimal reservation which will grow
1256 * once the spare is picked up by an array
1258 if (dl
->index
== -1)
1259 return MPB_SECTOR_CNT
;
1261 e
= get_extents(super
, dl
);
1263 return MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1265 /* scroll to last entry */
1266 for (i
= 0; e
[i
].size
; i
++)
1269 rv
= total_blocks(&dl
->disk
) - e
[i
].start
;
1276 static int is_spare(struct imsm_disk
*disk
)
1278 return (disk
->status
& SPARE_DISK
) == SPARE_DISK
;
1281 static int is_configured(struct imsm_disk
*disk
)
1283 return (disk
->status
& CONFIGURED_DISK
) == CONFIGURED_DISK
;
1286 static int is_failed(struct imsm_disk
*disk
)
1288 return (disk
->status
& FAILED_DISK
) == FAILED_DISK
;
1291 /* try to determine how much space is reserved for metadata from
1292 * the last get_extents() entry on the smallest active disk,
1293 * otherwise fallback to the default
1295 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
)
1299 unsigned long long min_active
;
1301 __u32 rv
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1302 struct dl
*dl
, *dl_min
= NULL
;
1308 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
1311 unsigned long long blocks
= total_blocks(&dl
->disk
);
1312 if (blocks
< min_active
|| min_active
== 0) {
1314 min_active
= blocks
;
1320 /* find last lba used by subarrays on the smallest active disk */
1321 e
= get_extents(super
, dl_min
);
1324 for (i
= 0; e
[i
].size
; i
++)
1327 remainder
= min_active
- e
[i
].start
;
1330 /* to give priority to recovery we should not require full
1331 IMSM_RESERVED_SECTORS from the spare */
1332 rv
= MPB_SECTOR_CNT
+ NUM_BLOCKS_DIRTY_STRIPE_REGION
;
1334 /* if real reservation is smaller use that value */
1335 return (remainder
< rv
) ? remainder
: rv
;
1338 /* Return minimum size of a spare that can be used in this array*/
1339 static unsigned long long min_acceptable_spare_size_imsm(struct supertype
*st
)
1341 struct intel_super
*super
= st
->sb
;
1345 unsigned long long rv
= 0;
1349 /* find first active disk in array */
1351 while (dl
&& (is_failed(&dl
->disk
) || dl
->index
== -1))
1355 /* find last lba used by subarrays */
1356 e
= get_extents(super
, dl
);
1359 for (i
= 0; e
[i
].size
; i
++)
1362 rv
= e
[i
-1].start
+ e
[i
-1].size
;
1365 /* add the amount of space needed for metadata */
1366 rv
= rv
+ imsm_min_reserved_sectors(super
);
1371 static int is_gen_migration(struct imsm_dev
*dev
);
1373 #define IMSM_4K_DIV 8
1376 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
1377 struct imsm_dev
*dev
);
1379 static void print_imsm_dev(struct intel_super
*super
,
1380 struct imsm_dev
*dev
,
1386 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1387 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
1391 printf("[%.16s]:\n", dev
->volume
);
1392 printf(" UUID : %s\n", uuid
);
1393 printf(" RAID Level : %d", get_imsm_raid_level(map
));
1395 printf(" <-- %d", get_imsm_raid_level(map2
));
1397 printf(" Members : %d", map
->num_members
);
1399 printf(" <-- %d", map2
->num_members
);
1401 printf(" Slots : [");
1402 for (i
= 0; i
< map
->num_members
; i
++) {
1403 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_0
);
1404 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1409 for (i
= 0; i
< map2
->num_members
; i
++) {
1410 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_1
);
1411 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1416 printf(" Failed disk : ");
1417 if (map
->failed_disk_num
== 0xff)
1420 printf("%i", map
->failed_disk_num
);
1422 slot
= get_imsm_disk_slot(map
, disk_idx
);
1424 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
1425 printf(" This Slot : %d%s\n", slot
,
1426 ord
& IMSM_ORD_REBUILD
? " (out-of-sync)" : "");
1428 printf(" This Slot : ?\n");
1429 sz
= __le32_to_cpu(dev
->size_high
);
1431 sz
+= __le32_to_cpu(dev
->size_low
);
1432 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
1433 human_size(sz
* 512));
1434 sz
= blocks_per_member(map
);
1435 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
1436 human_size(sz
* 512));
1437 printf(" Sector Offset : %llu\n",
1439 printf(" Num Stripes : %llu\n",
1440 num_data_stripes(map
));
1441 printf(" Chunk Size : %u KiB",
1442 __le16_to_cpu(map
->blocks_per_strip
) / 2);
1444 printf(" <-- %u KiB",
1445 __le16_to_cpu(map2
->blocks_per_strip
) / 2);
1447 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
1448 printf(" Migrate State : ");
1449 if (dev
->vol
.migr_state
) {
1450 if (migr_type(dev
) == MIGR_INIT
)
1451 printf("initialize\n");
1452 else if (migr_type(dev
) == MIGR_REBUILD
)
1453 printf("rebuild\n");
1454 else if (migr_type(dev
) == MIGR_VERIFY
)
1456 else if (migr_type(dev
) == MIGR_GEN_MIGR
)
1457 printf("general migration\n");
1458 else if (migr_type(dev
) == MIGR_STATE_CHANGE
)
1459 printf("state change\n");
1460 else if (migr_type(dev
) == MIGR_REPAIR
)
1463 printf("<unknown:%d>\n", migr_type(dev
));
1466 printf(" Map State : %s", map_state_str
[map
->map_state
]);
1467 if (dev
->vol
.migr_state
) {
1468 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
1470 printf(" <-- %s", map_state_str
[map
->map_state
]);
1471 printf("\n Checkpoint : %u ",
1472 __le32_to_cpu(dev
->vol
.curr_migr_unit
));
1473 if (is_gen_migration(dev
) && (slot
> 1 || slot
< 0))
1476 printf("(%llu)", (unsigned long long)
1477 blocks_per_migr_unit(super
, dev
));
1480 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
1483 static void print_imsm_disk(struct imsm_disk
*disk
, int index
, __u32 reserved
)
1485 char str
[MAX_RAID_SERIAL_LEN
+ 1];
1488 if (index
< -1 || !disk
)
1492 snprintf(str
, MAX_RAID_SERIAL_LEN
+ 1, "%s", disk
->serial
);
1494 printf(" Disk%02d Serial : %s\n", index
, str
);
1496 printf(" Disk Serial : %s\n", str
);
1497 printf(" State :%s%s%s\n", is_spare(disk
) ? " spare" : "",
1498 is_configured(disk
) ? " active" : "",
1499 is_failed(disk
) ? " failed" : "");
1500 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
1501 sz
= total_blocks(disk
) - reserved
;
1502 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
1503 human_size(sz
* 512));
1506 void convert_to_4k_imsm_migr_rec(struct intel_super
*super
)
1508 struct migr_record
*migr_rec
= super
->migr_rec
;
1510 migr_rec
->blocks_per_unit
/= IMSM_4K_DIV
;
1511 migr_rec
->ckpt_area_pba
/= IMSM_4K_DIV
;
1512 migr_rec
->dest_1st_member_lba
/= IMSM_4K_DIV
;
1513 migr_rec
->dest_depth_per_unit
/= IMSM_4K_DIV
;
1514 split_ull((join_u32(migr_rec
->post_migr_vol_cap
,
1515 migr_rec
->post_migr_vol_cap_hi
) / IMSM_4K_DIV
),
1516 &migr_rec
->post_migr_vol_cap
, &migr_rec
->post_migr_vol_cap_hi
);
1519 void convert_to_4k_imsm_disk(struct imsm_disk
*disk
)
1521 set_total_blocks(disk
, (total_blocks(disk
)/IMSM_4K_DIV
));
1524 void convert_to_4k(struct intel_super
*super
)
1526 struct imsm_super
*mpb
= super
->anchor
;
1527 struct imsm_disk
*disk
;
1529 __u32 bbm_log_size
= __le32_to_cpu(mpb
->bbm_log_size
);
1531 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1532 disk
= __get_imsm_disk(mpb
, i
);
1534 convert_to_4k_imsm_disk(disk
);
1536 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1537 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1538 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1540 split_ull((join_u32(dev
->size_low
, dev
->size_high
)/IMSM_4K_DIV
),
1541 &dev
->size_low
, &dev
->size_high
);
1542 dev
->vol
.curr_migr_unit
/= IMSM_4K_DIV
;
1545 set_blocks_per_member(map
, blocks_per_member(map
)/IMSM_4K_DIV
);
1546 map
->blocks_per_strip
/= IMSM_4K_DIV
;
1547 set_pba_of_lba0(map
, pba_of_lba0(map
)/IMSM_4K_DIV
);
1549 if (dev
->vol
.migr_state
) {
1551 map
= get_imsm_map(dev
, MAP_1
);
1552 set_blocks_per_member(map
,
1553 blocks_per_member(map
)/IMSM_4K_DIV
);
1554 map
->blocks_per_strip
/= IMSM_4K_DIV
;
1555 set_pba_of_lba0(map
, pba_of_lba0(map
)/IMSM_4K_DIV
);
1559 struct bbm_log
*log
= (void *)mpb
+
1560 __le32_to_cpu(mpb
->mpb_size
) - bbm_log_size
;
1563 for (i
= 0; i
< log
->entry_count
; i
++) {
1564 struct bbm_log_entry
*entry
=
1565 &log
->marked_block_entries
[i
];
1567 __u8 count
= entry
->marked_count
+ 1;
1568 unsigned long long sector
=
1569 __le48_to_cpu(&entry
->defective_block_start
);
1571 entry
->defective_block_start
=
1572 __cpu_to_le48(sector
/IMSM_4K_DIV
);
1573 entry
->marked_count
= max(count
/IMSM_4K_DIV
, 1) - 1;
1577 mpb
->check_sum
= __gen_imsm_checksum(mpb
);
1580 void examine_migr_rec_imsm(struct intel_super
*super
)
1582 struct migr_record
*migr_rec
= super
->migr_rec
;
1583 struct imsm_super
*mpb
= super
->anchor
;
1586 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1587 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1588 struct imsm_map
*map
;
1591 if (is_gen_migration(dev
) == 0)
1594 printf("\nMigration Record Information:");
1596 /* first map under migration */
1597 map
= get_imsm_map(dev
, MAP_0
);
1599 slot
= get_imsm_disk_slot(map
, super
->disks
->index
);
1600 if (map
== NULL
|| slot
> 1 || slot
< 0) {
1601 printf(" Empty\n ");
1602 printf("Examine one of first two disks in array\n");
1605 printf("\n Status : ");
1606 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
1609 printf("Contains Data\n");
1610 printf(" Current Unit : %u\n",
1611 __le32_to_cpu(migr_rec
->curr_migr_unit
));
1612 printf(" Family : %u\n",
1613 __le32_to_cpu(migr_rec
->family_num
));
1614 printf(" Ascending : %u\n",
1615 __le32_to_cpu(migr_rec
->ascending_migr
));
1616 printf(" Blocks Per Unit : %u\n",
1617 __le32_to_cpu(migr_rec
->blocks_per_unit
));
1618 printf(" Dest. Depth Per Unit : %u\n",
1619 __le32_to_cpu(migr_rec
->dest_depth_per_unit
));
1620 printf(" Checkpoint Area pba : %u\n",
1621 __le32_to_cpu(migr_rec
->ckpt_area_pba
));
1622 printf(" First member lba : %u\n",
1623 __le32_to_cpu(migr_rec
->dest_1st_member_lba
));
1624 printf(" Total Number of Units : %u\n",
1625 __le32_to_cpu(migr_rec
->num_migr_units
));
1626 printf(" Size of volume : %u\n",
1627 __le32_to_cpu(migr_rec
->post_migr_vol_cap
));
1628 printf(" Expansion space for LBA64 : %u\n",
1629 __le32_to_cpu(migr_rec
->post_migr_vol_cap_hi
));
1630 printf(" Record was read from : %u\n",
1631 __le32_to_cpu(migr_rec
->ckpt_read_disk_num
));
1636 #endif /* MDASSEMBLE */
1638 void convert_from_4k_imsm_migr_rec(struct intel_super
*super
)
1640 struct migr_record
*migr_rec
= super
->migr_rec
;
1642 migr_rec
->blocks_per_unit
*= IMSM_4K_DIV
;
1643 migr_rec
->ckpt_area_pba
*= IMSM_4K_DIV
;
1644 migr_rec
->dest_1st_member_lba
*= IMSM_4K_DIV
;
1645 migr_rec
->dest_depth_per_unit
*= IMSM_4K_DIV
;
1646 split_ull((join_u32(migr_rec
->post_migr_vol_cap
,
1647 migr_rec
->post_migr_vol_cap_hi
) * IMSM_4K_DIV
),
1648 &migr_rec
->post_migr_vol_cap
,
1649 &migr_rec
->post_migr_vol_cap_hi
);
1652 void convert_from_4k(struct intel_super
*super
)
1654 struct imsm_super
*mpb
= super
->anchor
;
1655 struct imsm_disk
*disk
;
1657 __u32 bbm_log_size
= __le32_to_cpu(mpb
->bbm_log_size
);
1659 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1660 disk
= __get_imsm_disk(mpb
, i
);
1662 set_total_blocks(disk
, (total_blocks(disk
)*IMSM_4K_DIV
));
1665 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1666 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1667 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1669 split_ull((join_u32(dev
->size_low
, dev
->size_high
)*IMSM_4K_DIV
),
1670 &dev
->size_low
, &dev
->size_high
);
1671 dev
->vol
.curr_migr_unit
*= IMSM_4K_DIV
;
1674 set_blocks_per_member(map
, blocks_per_member(map
)*IMSM_4K_DIV
);
1675 map
->blocks_per_strip
*= IMSM_4K_DIV
;
1676 set_pba_of_lba0(map
, pba_of_lba0(map
)*IMSM_4K_DIV
);
1678 if (dev
->vol
.migr_state
) {
1680 map
= get_imsm_map(dev
, MAP_1
);
1681 set_blocks_per_member(map
,
1682 blocks_per_member(map
)*IMSM_4K_DIV
);
1683 map
->blocks_per_strip
*= IMSM_4K_DIV
;
1684 set_pba_of_lba0(map
, pba_of_lba0(map
)*IMSM_4K_DIV
);
1688 struct bbm_log
*log
= (void *)mpb
+
1689 __le32_to_cpu(mpb
->mpb_size
) - bbm_log_size
;
1692 for (i
= 0; i
< log
->entry_count
; i
++) {
1693 struct bbm_log_entry
*entry
=
1694 &log
->marked_block_entries
[i
];
1696 __u8 count
= entry
->marked_count
+ 1;
1697 unsigned long long sector
=
1698 __le48_to_cpu(&entry
->defective_block_start
);
1700 entry
->defective_block_start
=
1701 __cpu_to_le48(sector
*IMSM_4K_DIV
);
1702 entry
->marked_count
= count
*IMSM_4K_DIV
- 1;
1706 mpb
->check_sum
= __gen_imsm_checksum(mpb
);
1709 /*******************************************************************************
1710 * function: imsm_check_attributes
1711 * Description: Function checks if features represented by attributes flags
1712 * are supported by mdadm.
1714 * attributes - Attributes read from metadata
1716 * 0 - passed attributes contains unsupported features flags
1717 * 1 - all features are supported
1718 ******************************************************************************/
1719 static int imsm_check_attributes(__u32 attributes
)
1722 __u32 not_supported
= MPB_ATTRIB_SUPPORTED
^0xffffffff;
1724 not_supported
&= ~MPB_ATTRIB_IGNORED
;
1726 not_supported
&= attributes
;
1727 if (not_supported
) {
1728 pr_err("(IMSM): Unsupported attributes : %x\n",
1729 (unsigned)__le32_to_cpu(not_supported
));
1730 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1731 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n");
1732 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1734 if (not_supported
& MPB_ATTRIB_2TB
) {
1735 dprintf("\t\tMPB_ATTRIB_2TB\n");
1736 not_supported
^= MPB_ATTRIB_2TB
;
1738 if (not_supported
& MPB_ATTRIB_RAID0
) {
1739 dprintf("\t\tMPB_ATTRIB_RAID0\n");
1740 not_supported
^= MPB_ATTRIB_RAID0
;
1742 if (not_supported
& MPB_ATTRIB_RAID1
) {
1743 dprintf("\t\tMPB_ATTRIB_RAID1\n");
1744 not_supported
^= MPB_ATTRIB_RAID1
;
1746 if (not_supported
& MPB_ATTRIB_RAID10
) {
1747 dprintf("\t\tMPB_ATTRIB_RAID10\n");
1748 not_supported
^= MPB_ATTRIB_RAID10
;
1750 if (not_supported
& MPB_ATTRIB_RAID1E
) {
1751 dprintf("\t\tMPB_ATTRIB_RAID1E\n");
1752 not_supported
^= MPB_ATTRIB_RAID1E
;
1754 if (not_supported
& MPB_ATTRIB_RAID5
) {
1755 dprintf("\t\tMPB_ATTRIB_RAID5\n");
1756 not_supported
^= MPB_ATTRIB_RAID5
;
1758 if (not_supported
& MPB_ATTRIB_RAIDCNG
) {
1759 dprintf("\t\tMPB_ATTRIB_RAIDCNG\n");
1760 not_supported
^= MPB_ATTRIB_RAIDCNG
;
1762 if (not_supported
& MPB_ATTRIB_BBM
) {
1763 dprintf("\t\tMPB_ATTRIB_BBM\n");
1764 not_supported
^= MPB_ATTRIB_BBM
;
1766 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1767 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n");
1768 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1770 if (not_supported
& MPB_ATTRIB_EXP_STRIPE_SIZE
) {
1771 dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n");
1772 not_supported
^= MPB_ATTRIB_EXP_STRIPE_SIZE
;
1774 if (not_supported
& MPB_ATTRIB_2TB_DISK
) {
1775 dprintf("\t\tMPB_ATTRIB_2TB_DISK\n");
1776 not_supported
^= MPB_ATTRIB_2TB_DISK
;
1778 if (not_supported
& MPB_ATTRIB_NEVER_USE2
) {
1779 dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n");
1780 not_supported
^= MPB_ATTRIB_NEVER_USE2
;
1782 if (not_supported
& MPB_ATTRIB_NEVER_USE
) {
1783 dprintf("\t\tMPB_ATTRIB_NEVER_USE\n");
1784 not_supported
^= MPB_ATTRIB_NEVER_USE
;
1788 dprintf("(IMSM): Unknown attributes : %x\n", not_supported
);
1797 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1799 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
1801 struct intel_super
*super
= st
->sb
;
1802 struct imsm_super
*mpb
= super
->anchor
;
1803 char str
[MAX_SIGNATURE_LENGTH
];
1808 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
1811 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
1812 printf(" Magic : %s\n", str
);
1813 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
1814 printf(" Version : %s\n", get_imsm_version(mpb
));
1815 printf(" Orig Family : %08x\n", __le32_to_cpu(mpb
->orig_family_num
));
1816 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
1817 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
1818 printf(" Attributes : ");
1819 if (imsm_check_attributes(mpb
->attributes
))
1820 printf("All supported\n");
1822 printf("not supported\n");
1823 getinfo_super_imsm(st
, &info
, NULL
);
1824 fname_from_uuid(st
, &info
, nbuf
, ':');
1825 printf(" UUID : %s\n", nbuf
+ 5);
1826 sum
= __le32_to_cpu(mpb
->check_sum
);
1827 printf(" Checksum : %08x %s\n", sum
,
1828 __gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
1829 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
, super
->sector_size
));
1830 printf(" Disks : %d\n", mpb
->num_disks
);
1831 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
1832 print_imsm_disk(__get_imsm_disk(mpb
, super
->disks
->index
), super
->disks
->index
, reserved
);
1833 if (get_imsm_bbm_log_size(super
->bbm_log
)) {
1834 struct bbm_log
*log
= super
->bbm_log
;
1837 printf("Bad Block Management Log:\n");
1838 printf(" Log Size : %d\n", __le32_to_cpu(mpb
->bbm_log_size
));
1839 printf(" Signature : %x\n", __le32_to_cpu(log
->signature
));
1840 printf(" Entry Count : %d\n", __le32_to_cpu(log
->entry_count
));
1842 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1844 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1846 super
->current_vol
= i
;
1847 getinfo_super_imsm(st
, &info
, NULL
);
1848 fname_from_uuid(st
, &info
, nbuf
, ':');
1849 print_imsm_dev(super
, dev
, nbuf
+ 5, super
->disks
->index
);
1851 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1852 if (i
== super
->disks
->index
)
1854 print_imsm_disk(__get_imsm_disk(mpb
, i
), i
, reserved
);
1857 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1858 if (dl
->index
== -1)
1859 print_imsm_disk(&dl
->disk
, -1, reserved
);
1861 examine_migr_rec_imsm(super
);
1864 static void brief_examine_super_imsm(struct supertype
*st
, int verbose
)
1866 /* We just write a generic IMSM ARRAY entry */
1869 struct intel_super
*super
= st
->sb
;
1871 if (!super
->anchor
->num_raid_devs
) {
1872 printf("ARRAY metadata=imsm\n");
1876 getinfo_super_imsm(st
, &info
, NULL
);
1877 fname_from_uuid(st
, &info
, nbuf
, ':');
1878 printf("ARRAY metadata=imsm UUID=%s\n", nbuf
+ 5);
1881 static void brief_examine_subarrays_imsm(struct supertype
*st
, int verbose
)
1883 /* We just write a generic IMSM ARRAY entry */
1887 struct intel_super
*super
= st
->sb
;
1890 if (!super
->anchor
->num_raid_devs
)
1893 getinfo_super_imsm(st
, &info
, NULL
);
1894 fname_from_uuid(st
, &info
, nbuf
, ':');
1895 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1896 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1898 super
->current_vol
= i
;
1899 getinfo_super_imsm(st
, &info
, NULL
);
1900 fname_from_uuid(st
, &info
, nbuf1
, ':');
1901 printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n",
1902 dev
->volume
, nbuf
+ 5, i
, nbuf1
+ 5);
1906 static void export_examine_super_imsm(struct supertype
*st
)
1908 struct intel_super
*super
= st
->sb
;
1909 struct imsm_super
*mpb
= super
->anchor
;
1913 getinfo_super_imsm(st
, &info
, NULL
);
1914 fname_from_uuid(st
, &info
, nbuf
, ':');
1915 printf("MD_METADATA=imsm\n");
1916 printf("MD_LEVEL=container\n");
1917 printf("MD_UUID=%s\n", nbuf
+5);
1918 printf("MD_DEVICES=%u\n", mpb
->num_disks
);
1921 static int copy_metadata_imsm(struct supertype
*st
, int from
, int to
)
1923 /* The second last sector of the device contains
1924 * the "struct imsm_super" metadata.
1925 * This contains mpb_size which is the size in bytes of the
1926 * extended metadata. This is located immediately before
1928 * We want to read all that, plus the last sector which
1929 * may contain a migration record, and write it all
1933 unsigned long long dsize
, offset
;
1935 struct imsm_super
*sb
;
1936 struct intel_super
*super
= st
->sb
;
1937 unsigned int sector_size
= super
->sector_size
;
1938 unsigned int written
= 0;
1940 if (posix_memalign(&buf
, MAX_SECTOR_SIZE
, MAX_SECTOR_SIZE
) != 0)
1943 if (!get_dev_size(from
, NULL
, &dsize
))
1946 if (lseek64(from
, dsize
-(2*sector_size
), 0) < 0)
1948 if (read(from
, buf
, sector_size
) != sector_size
)
1951 if (strncmp((char*)sb
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0)
1954 sectors
= mpb_sectors(sb
, sector_size
) + 2;
1955 offset
= dsize
- sectors
* sector_size
;
1956 if (lseek64(from
, offset
, 0) < 0 ||
1957 lseek64(to
, offset
, 0) < 0)
1959 while (written
< sectors
* sector_size
) {
1960 int n
= sectors
*sector_size
- written
;
1963 if (read(from
, buf
, n
) != n
)
1965 if (write(to
, buf
, n
) != n
)
1976 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
1981 getinfo_super_imsm(st
, &info
, NULL
);
1982 fname_from_uuid(st
, &info
, nbuf
, ':');
1983 printf("\n UUID : %s\n", nbuf
+ 5);
1986 static void brief_detail_super_imsm(struct supertype
*st
)
1990 getinfo_super_imsm(st
, &info
, NULL
);
1991 fname_from_uuid(st
, &info
, nbuf
, ':');
1992 printf(" UUID=%s", nbuf
+ 5);
1995 static int imsm_read_serial(int fd
, char *devname
, __u8
*serial
);
1996 static void fd2devname(int fd
, char *name
);
1998 static int ahci_enumerate_ports(const char *hba_path
, int port_count
, int host_base
, int verbose
)
2000 /* dump an unsorted list of devices attached to AHCI Intel storage
2001 * controller, as well as non-connected ports
2003 int hba_len
= strlen(hba_path
) + 1;
2008 unsigned long port_mask
= (1 << port_count
) - 1;
2010 if (port_count
> (int)sizeof(port_mask
) * 8) {
2012 pr_err("port_count %d out of range\n", port_count
);
2016 /* scroll through /sys/dev/block looking for devices attached to
2019 dir
= opendir("/sys/dev/block");
2023 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
2034 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
2036 path
= devt_to_devpath(makedev(major
, minor
));
2039 if (!path_attached_to_hba(path
, hba_path
)) {
2045 /* retrieve the scsi device type */
2046 if (asprintf(&device
, "/sys/dev/block/%d:%d/device/xxxxxxx", major
, minor
) < 0) {
2048 pr_err("failed to allocate 'device'\n");
2052 sprintf(device
, "/sys/dev/block/%d:%d/device/type", major
, minor
);
2053 if (load_sys(device
, buf
, sizeof(buf
)) != 0) {
2055 pr_err("failed to read device type for %s\n",
2061 type
= strtoul(buf
, NULL
, 10);
2063 /* if it's not a disk print the vendor and model */
2064 if (!(type
== 0 || type
== 7 || type
== 14)) {
2067 sprintf(device
, "/sys/dev/block/%d:%d/device/vendor", major
, minor
);
2068 if (load_sys(device
, buf
, sizeof(buf
)) == 0) {
2069 strncpy(vendor
, buf
, sizeof(vendor
));
2070 vendor
[sizeof(vendor
) - 1] = '\0';
2071 c
= (char *) &vendor
[sizeof(vendor
) - 1];
2072 while (isspace(*c
) || *c
== '\0')
2076 sprintf(device
, "/sys/dev/block/%d:%d/device/model", major
, minor
);
2077 if (load_sys(device
, buf
, sizeof(buf
)) == 0) {
2078 strncpy(model
, buf
, sizeof(model
));
2079 model
[sizeof(model
) - 1] = '\0';
2080 c
= (char *) &model
[sizeof(model
) - 1];
2081 while (isspace(*c
) || *c
== '\0')
2085 if (vendor
[0] && model
[0])
2086 sprintf(buf
, "%.64s %.64s", vendor
, model
);
2088 switch (type
) { /* numbers from hald/linux/device.c */
2089 case 1: sprintf(buf
, "tape"); break;
2090 case 2: sprintf(buf
, "printer"); break;
2091 case 3: sprintf(buf
, "processor"); break;
2093 case 5: sprintf(buf
, "cdrom"); break;
2094 case 6: sprintf(buf
, "scanner"); break;
2095 case 8: sprintf(buf
, "media_changer"); break;
2096 case 9: sprintf(buf
, "comm"); break;
2097 case 12: sprintf(buf
, "raid"); break;
2098 default: sprintf(buf
, "unknown");
2104 /* chop device path to 'host%d' and calculate the port number */
2105 c
= strchr(&path
[hba_len
], '/');
2108 pr_err("%s - invalid path name\n", path
+ hba_len
);
2113 if ((sscanf(&path
[hba_len
], "ata%d", &port
) == 1) ||
2114 ((sscanf(&path
[hba_len
], "host%d", &port
) == 1)))
2118 *c
= '/'; /* repair the full string */
2119 pr_err("failed to determine port number for %s\n",
2126 /* mark this port as used */
2127 port_mask
&= ~(1 << port
);
2129 /* print out the device information */
2131 printf(" Port%d : - non-disk device (%s) -\n", port
, buf
);
2135 fd
= dev_open(ent
->d_name
, O_RDONLY
);
2137 printf(" Port%d : - disk info unavailable -\n", port
);
2139 fd2devname(fd
, buf
);
2140 printf(" Port%d : %s", port
, buf
);
2141 if (imsm_read_serial(fd
, NULL
, (__u8
*) buf
) == 0)
2142 printf(" (%.*s)\n", MAX_RAID_SERIAL_LEN
, buf
);
2157 for (i
= 0; i
< port_count
; i
++)
2158 if (port_mask
& (1 << i
))
2159 printf(" Port%d : - no device attached -\n", i
);
2165 static int print_vmd_attached_devs(struct sys_dev
*hba
)
2173 if (hba
->type
!= SYS_DEV_VMD
)
2176 /* scroll through /sys/dev/block looking for devices attached to
2179 dir
= opendir("/sys/bus/pci/drivers/nvme");
2183 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
2186 /* is 'ent' a device? check that the 'subsystem' link exists and
2187 * that its target matches 'bus'
2189 sprintf(path
, "/sys/bus/pci/drivers/nvme/%s/subsystem",
2191 n
= readlink(path
, link
, sizeof(link
));
2192 if (n
< 0 || n
>= (int)sizeof(link
))
2195 c
= strrchr(link
, '/');
2198 if (strncmp("pci", c
+1, strlen("pci")) != 0)
2201 sprintf(path
, "/sys/bus/pci/drivers/nvme/%s", ent
->d_name
);
2203 rp
= realpath(path
, NULL
);
2207 if (path_attached_to_hba(rp
, hba
->path
)) {
2208 printf(" NVMe under VMD : %s\n", rp
);
2217 static void print_found_intel_controllers(struct sys_dev
*elem
)
2219 for (; elem
; elem
= elem
->next
) {
2220 pr_err("found Intel(R) ");
2221 if (elem
->type
== SYS_DEV_SATA
)
2222 fprintf(stderr
, "SATA ");
2223 else if (elem
->type
== SYS_DEV_SAS
)
2224 fprintf(stderr
, "SAS ");
2225 else if (elem
->type
== SYS_DEV_NVME
)
2226 fprintf(stderr
, "NVMe ");
2228 if (elem
->type
== SYS_DEV_VMD
)
2229 fprintf(stderr
, "VMD domain");
2231 fprintf(stderr
, "RAID controller");
2234 fprintf(stderr
, " at %s", elem
->pci_id
);
2235 fprintf(stderr
, ".\n");
2240 static int ahci_get_port_count(const char *hba_path
, int *port_count
)
2247 if ((dir
= opendir(hba_path
)) == NULL
)
2250 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
2253 if ((sscanf(ent
->d_name
, "ata%d", &host
) != 1) &&
2254 ((sscanf(ent
->d_name
, "host%d", &host
) != 1)))
2256 if (*port_count
== 0)
2258 else if (host
< host_base
)
2261 if (host
+ 1 > *port_count
+ host_base
)
2262 *port_count
= host
+ 1 - host_base
;
2268 static void print_imsm_capability(const struct imsm_orom
*orom
)
2270 printf(" Platform : Intel(R) ");
2271 if (orom
->capabilities
== 0 && orom
->driver_features
== 0)
2272 printf("Matrix Storage Manager\n");
2274 printf("Rapid Storage Technology%s\n",
2275 imsm_orom_is_enterprise(orom
) ? " enterprise" : "");
2276 if (orom
->major_ver
|| orom
->minor_ver
|| orom
->hotfix_ver
|| orom
->build
)
2277 printf(" Version : %d.%d.%d.%d\n", orom
->major_ver
,
2278 orom
->minor_ver
, orom
->hotfix_ver
, orom
->build
);
2279 printf(" RAID Levels :%s%s%s%s%s\n",
2280 imsm_orom_has_raid0(orom
) ? " raid0" : "",
2281 imsm_orom_has_raid1(orom
) ? " raid1" : "",
2282 imsm_orom_has_raid1e(orom
) ? " raid1e" : "",
2283 imsm_orom_has_raid10(orom
) ? " raid10" : "",
2284 imsm_orom_has_raid5(orom
) ? " raid5" : "");
2285 printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
2286 imsm_orom_has_chunk(orom
, 2) ? " 2k" : "",
2287 imsm_orom_has_chunk(orom
, 4) ? " 4k" : "",
2288 imsm_orom_has_chunk(orom
, 8) ? " 8k" : "",
2289 imsm_orom_has_chunk(orom
, 16) ? " 16k" : "",
2290 imsm_orom_has_chunk(orom
, 32) ? " 32k" : "",
2291 imsm_orom_has_chunk(orom
, 64) ? " 64k" : "",
2292 imsm_orom_has_chunk(orom
, 128) ? " 128k" : "",
2293 imsm_orom_has_chunk(orom
, 256) ? " 256k" : "",
2294 imsm_orom_has_chunk(orom
, 512) ? " 512k" : "",
2295 imsm_orom_has_chunk(orom
, 1024*1) ? " 1M" : "",
2296 imsm_orom_has_chunk(orom
, 1024*2) ? " 2M" : "",
2297 imsm_orom_has_chunk(orom
, 1024*4) ? " 4M" : "",
2298 imsm_orom_has_chunk(orom
, 1024*8) ? " 8M" : "",
2299 imsm_orom_has_chunk(orom
, 1024*16) ? " 16M" : "",
2300 imsm_orom_has_chunk(orom
, 1024*32) ? " 32M" : "",
2301 imsm_orom_has_chunk(orom
, 1024*64) ? " 64M" : "");
2302 printf(" 2TB volumes :%s supported\n",
2303 (orom
->attr
& IMSM_OROM_ATTR_2TB
)?"":" not");
2304 printf(" 2TB disks :%s supported\n",
2305 (orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
)?"":" not");
2306 printf(" Max Disks : %d\n", orom
->tds
);
2307 printf(" Max Volumes : %d per array, %d per %s\n",
2308 orom
->vpa
, orom
->vphba
,
2309 imsm_orom_is_nvme(orom
) ? "platform" : "controller");
2313 static void print_imsm_capability_export(const struct imsm_orom
*orom
)
2315 printf("MD_FIRMWARE_TYPE=imsm\n");
2316 if (orom
->major_ver
|| orom
->minor_ver
|| orom
->hotfix_ver
|| orom
->build
)
2317 printf("IMSM_VERSION=%d.%d.%d.%d\n", orom
->major_ver
, orom
->minor_ver
,
2318 orom
->hotfix_ver
, orom
->build
);
2319 printf("IMSM_SUPPORTED_RAID_LEVELS=%s%s%s%s%s\n",
2320 imsm_orom_has_raid0(orom
) ? "raid0 " : "",
2321 imsm_orom_has_raid1(orom
) ? "raid1 " : "",
2322 imsm_orom_has_raid1e(orom
) ? "raid1e " : "",
2323 imsm_orom_has_raid5(orom
) ? "raid10 " : "",
2324 imsm_orom_has_raid10(orom
) ? "raid5 " : "");
2325 printf("IMSM_SUPPORTED_CHUNK_SIZES=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
2326 imsm_orom_has_chunk(orom
, 2) ? "2k " : "",
2327 imsm_orom_has_chunk(orom
, 4) ? "4k " : "",
2328 imsm_orom_has_chunk(orom
, 8) ? "8k " : "",
2329 imsm_orom_has_chunk(orom
, 16) ? "16k " : "",
2330 imsm_orom_has_chunk(orom
, 32) ? "32k " : "",
2331 imsm_orom_has_chunk(orom
, 64) ? "64k " : "",
2332 imsm_orom_has_chunk(orom
, 128) ? "128k " : "",
2333 imsm_orom_has_chunk(orom
, 256) ? "256k " : "",
2334 imsm_orom_has_chunk(orom
, 512) ? "512k " : "",
2335 imsm_orom_has_chunk(orom
, 1024*1) ? "1M " : "",
2336 imsm_orom_has_chunk(orom
, 1024*2) ? "2M " : "",
2337 imsm_orom_has_chunk(orom
, 1024*4) ? "4M " : "",
2338 imsm_orom_has_chunk(orom
, 1024*8) ? "8M " : "",
2339 imsm_orom_has_chunk(orom
, 1024*16) ? "16M " : "",
2340 imsm_orom_has_chunk(orom
, 1024*32) ? "32M " : "",
2341 imsm_orom_has_chunk(orom
, 1024*64) ? "64M " : "");
2342 printf("IMSM_2TB_VOLUMES=%s\n",(orom
->attr
& IMSM_OROM_ATTR_2TB
) ? "yes" : "no");
2343 printf("IMSM_2TB_DISKS=%s\n",(orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
) ? "yes" : "no");
2344 printf("IMSM_MAX_DISKS=%d\n",orom
->tds
);
2345 printf("IMSM_MAX_VOLUMES_PER_ARRAY=%d\n",orom
->vpa
);
2346 printf("IMSM_MAX_VOLUMES_PER_CONTROLLER=%d\n",orom
->vphba
);
2349 static int detail_platform_imsm(int verbose
, int enumerate_only
, char *controller_path
)
2351 /* There are two components to imsm platform support, the ahci SATA
2352 * controller and the option-rom. To find the SATA controller we
2353 * simply look in /sys/bus/pci/drivers/ahci to see if an ahci
2354 * controller with the Intel vendor id is present. This approach
2355 * allows mdadm to leverage the kernel's ahci detection logic, with the
2356 * caveat that if ahci.ko is not loaded mdadm will not be able to
2357 * detect platform raid capabilities. The option-rom resides in a
2358 * platform "Adapter ROM". We scan for its signature to retrieve the
2359 * platform capabilities. If raid support is disabled in the BIOS the
2360 * option-rom capability structure will not be available.
2362 struct sys_dev
*list
, *hba
;
2367 if (enumerate_only
) {
2368 if (check_env("IMSM_NO_PLATFORM"))
2370 list
= find_intel_devices();
2373 for (hba
= list
; hba
; hba
= hba
->next
) {
2374 if (find_imsm_capability(hba
)) {
2384 list
= find_intel_devices();
2387 pr_err("no active Intel(R) RAID controller found.\n");
2389 } else if (verbose
> 0)
2390 print_found_intel_controllers(list
);
2392 for (hba
= list
; hba
; hba
= hba
->next
) {
2393 if (controller_path
&& (compare_paths(hba
->path
, controller_path
) != 0))
2395 if (!find_imsm_capability(hba
)) {
2397 pr_err("imsm capabilities not found for controller: %s (type %s)\n",
2398 hba
->type
== SYS_DEV_VMD
? vmd_domain_to_controller(hba
, buf
) : hba
->path
,
2399 get_sys_dev_type(hba
->type
));
2405 if (controller_path
&& result
== 1) {
2406 pr_err("no active Intel(R) RAID controller found under %s\n",
2411 const struct orom_entry
*entry
;
2413 for (entry
= orom_entries
; entry
; entry
= entry
->next
) {
2414 if (entry
->type
== SYS_DEV_VMD
) {
2415 print_imsm_capability(&entry
->orom
);
2416 printf(" 3rd party NVMe :%s supported\n",
2417 imsm_orom_has_tpv_support(&entry
->orom
)?"":" not");
2418 for (hba
= list
; hba
; hba
= hba
->next
) {
2419 if (hba
->type
== SYS_DEV_VMD
) {
2421 printf(" I/O Controller : %s (%s)\n",
2422 vmd_domain_to_controller(hba
, buf
), get_sys_dev_type(hba
->type
));
2423 if (print_vmd_attached_devs(hba
)) {
2425 pr_err("failed to get devices attached to VMD domain.\n");
2434 print_imsm_capability(&entry
->orom
);
2435 if (entry
->type
== SYS_DEV_NVME
) {
2436 for (hba
= list
; hba
; hba
= hba
->next
) {
2437 if (hba
->type
== SYS_DEV_NVME
)
2438 printf(" NVMe Device : %s\n", hba
->path
);
2444 struct devid_list
*devid
;
2445 for (devid
= entry
->devid_list
; devid
; devid
= devid
->next
) {
2446 hba
= device_by_id(devid
->devid
);
2450 printf(" I/O Controller : %s (%s)\n",
2451 hba
->path
, get_sys_dev_type(hba
->type
));
2452 if (hba
->type
== SYS_DEV_SATA
) {
2453 host_base
= ahci_get_port_count(hba
->path
, &port_count
);
2454 if (ahci_enumerate_ports(hba
->path
, port_count
, host_base
, verbose
)) {
2456 pr_err("failed to enumerate ports on SATA controller at %s.\n", hba
->pci_id
);
2467 static int export_detail_platform_imsm(int verbose
, char *controller_path
)
2469 struct sys_dev
*list
, *hba
;
2472 list
= find_intel_devices();
2475 pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_INTEL_DEVICES\n");
2480 for (hba
= list
; hba
; hba
= hba
->next
) {
2481 if (controller_path
&& (compare_paths(hba
->path
,controller_path
) != 0))
2483 if (!find_imsm_capability(hba
) && verbose
> 0) {
2485 pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_IMSM_CAPABLE_DEVICE_UNDER_%s\n",
2486 hba
->type
== SYS_DEV_VMD
? vmd_domain_to_controller(hba
, buf
) : hba
->path
);
2492 const struct orom_entry
*entry
;
2494 for (entry
= orom_entries
; entry
; entry
= entry
->next
) {
2495 if (entry
->type
== SYS_DEV_VMD
) {
2496 for (hba
= list
; hba
; hba
= hba
->next
)
2497 print_imsm_capability_export(&entry
->orom
);
2500 print_imsm_capability_export(&entry
->orom
);
2508 static int match_home_imsm(struct supertype
*st
, char *homehost
)
2510 /* the imsm metadata format does not specify any host
2511 * identification information. We return -1 since we can never
2512 * confirm nor deny whether a given array is "meant" for this
2513 * host. We rely on compare_super and the 'family_num' fields to
2514 * exclude member disks that do not belong, and we rely on
2515 * mdadm.conf to specify the arrays that should be assembled.
2516 * Auto-assembly may still pick up "foreign" arrays.
2522 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
2524 /* The uuid returned here is used for:
2525 * uuid to put into bitmap file (Create, Grow)
2526 * uuid for backup header when saving critical section (Grow)
2527 * comparing uuids when re-adding a device into an array
2528 * In these cases the uuid required is that of the data-array,
2529 * not the device-set.
2530 * uuid to recognise same set when adding a missing device back
2531 * to an array. This is a uuid for the device-set.
2533 * For each of these we can make do with a truncated
2534 * or hashed uuid rather than the original, as long as
2536 * In each case the uuid required is that of the data-array,
2537 * not the device-set.
2539 /* imsm does not track uuid's so we synthesis one using sha1 on
2540 * - The signature (Which is constant for all imsm array, but no matter)
2541 * - the orig_family_num of the container
2542 * - the index number of the volume
2543 * - the 'serial' number of the volume.
2544 * Hopefully these are all constant.
2546 struct intel_super
*super
= st
->sb
;
2549 struct sha1_ctx ctx
;
2550 struct imsm_dev
*dev
= NULL
;
2553 /* some mdadm versions failed to set ->orig_family_num, in which
2554 * case fall back to ->family_num. orig_family_num will be
2555 * fixed up with the first metadata update.
2557 family_num
= super
->anchor
->orig_family_num
;
2558 if (family_num
== 0)
2559 family_num
= super
->anchor
->family_num
;
2560 sha1_init_ctx(&ctx
);
2561 sha1_process_bytes(super
->anchor
->sig
, MPB_SIG_LEN
, &ctx
);
2562 sha1_process_bytes(&family_num
, sizeof(__u32
), &ctx
);
2563 if (super
->current_vol
>= 0)
2564 dev
= get_imsm_dev(super
, super
->current_vol
);
2566 __u32 vol
= super
->current_vol
;
2567 sha1_process_bytes(&vol
, sizeof(vol
), &ctx
);
2568 sha1_process_bytes(dev
->volume
, MAX_RAID_SERIAL_LEN
, &ctx
);
2570 sha1_finish_ctx(&ctx
, buf
);
2571 memcpy(uuid
, buf
, 4*4);
2576 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
2578 __u8
*v
= get_imsm_version(mpb
);
2579 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
2580 char major
[] = { 0, 0, 0 };
2581 char minor
[] = { 0 ,0, 0 };
2582 char patch
[] = { 0, 0, 0 };
2583 char *ver_parse
[] = { major
, minor
, patch
};
2587 while (*v
!= '\0' && v
< end
) {
2588 if (*v
!= '.' && j
< 2)
2589 ver_parse
[i
][j
++] = *v
;
2597 *m
= strtol(minor
, NULL
, 0);
2598 *p
= strtol(patch
, NULL
, 0);
2602 static __u32
migr_strip_blocks_resync(struct imsm_dev
*dev
)
2604 /* migr_strip_size when repairing or initializing parity */
2605 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2606 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2608 switch (get_imsm_raid_level(map
)) {
2613 return 128*1024 >> 9;
2617 static __u32
migr_strip_blocks_rebuild(struct imsm_dev
*dev
)
2619 /* migr_strip_size when rebuilding a degraded disk, no idea why
2620 * this is different than migr_strip_size_resync(), but it's good
2623 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
2624 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2626 switch (get_imsm_raid_level(map
)) {
2629 if (map
->num_members
% map
->num_domains
== 0)
2630 return 128*1024 >> 9;
2634 return max((__u32
) 64*1024 >> 9, chunk
);
2636 return 128*1024 >> 9;
2640 static __u32
num_stripes_per_unit_resync(struct imsm_dev
*dev
)
2642 struct imsm_map
*lo
= get_imsm_map(dev
, MAP_0
);
2643 struct imsm_map
*hi
= get_imsm_map(dev
, MAP_1
);
2644 __u32 lo_chunk
= __le32_to_cpu(lo
->blocks_per_strip
);
2645 __u32 hi_chunk
= __le32_to_cpu(hi
->blocks_per_strip
);
2647 return max((__u32
) 1, hi_chunk
/ lo_chunk
);
2650 static __u32
num_stripes_per_unit_rebuild(struct imsm_dev
*dev
)
2652 struct imsm_map
*lo
= get_imsm_map(dev
, MAP_0
);
2653 int level
= get_imsm_raid_level(lo
);
2655 if (level
== 1 || level
== 10) {
2656 struct imsm_map
*hi
= get_imsm_map(dev
, MAP_1
);
2658 return hi
->num_domains
;
2660 return num_stripes_per_unit_resync(dev
);
2663 static __u8
imsm_num_data_members(struct imsm_dev
*dev
, int second_map
)
2665 /* named 'imsm_' because raid0, raid1 and raid10
2666 * counter-intuitively have the same number of data disks
2668 struct imsm_map
*map
= get_imsm_map(dev
, second_map
);
2670 switch (get_imsm_raid_level(map
)) {
2672 return map
->num_members
;
2676 return map
->num_members
/2;
2678 return map
->num_members
- 1;
2680 dprintf("unsupported raid level\n");
2685 static __u32
parity_segment_depth(struct imsm_dev
*dev
)
2687 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2688 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2690 switch(get_imsm_raid_level(map
)) {
2693 return chunk
* map
->num_domains
;
2695 return chunk
* map
->num_members
;
2701 static __u32
map_migr_block(struct imsm_dev
*dev
, __u32 block
)
2703 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
2704 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2705 __u32 strip
= block
/ chunk
;
2707 switch (get_imsm_raid_level(map
)) {
2710 __u32 vol_strip
= (strip
* map
->num_domains
) + 1;
2711 __u32 vol_stripe
= vol_strip
/ map
->num_members
;
2713 return vol_stripe
* chunk
+ block
% chunk
;
2715 __u32 stripe
= strip
/ (map
->num_members
- 1);
2717 return stripe
* chunk
+ block
% chunk
;
2724 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
2725 struct imsm_dev
*dev
)
2727 /* calculate the conversion factor between per member 'blocks'
2728 * (md/{resync,rebuild}_start) and imsm migration units, return
2729 * 0 for the 'not migrating' and 'unsupported migration' cases
2731 if (!dev
->vol
.migr_state
)
2734 switch (migr_type(dev
)) {
2735 case MIGR_GEN_MIGR
: {
2736 struct migr_record
*migr_rec
= super
->migr_rec
;
2737 return __le32_to_cpu(migr_rec
->blocks_per_unit
);
2742 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2743 __u32 stripes_per_unit
;
2744 __u32 blocks_per_unit
;
2753 /* yes, this is really the translation of migr_units to
2754 * per-member blocks in the 'resync' case
2756 stripes_per_unit
= num_stripes_per_unit_resync(dev
);
2757 migr_chunk
= migr_strip_blocks_resync(dev
);
2758 disks
= imsm_num_data_members(dev
, MAP_0
);
2759 blocks_per_unit
= stripes_per_unit
* migr_chunk
* disks
;
2760 stripe
= __le16_to_cpu(map
->blocks_per_strip
) * disks
;
2761 segment
= blocks_per_unit
/ stripe
;
2762 block_rel
= blocks_per_unit
- segment
* stripe
;
2763 parity_depth
= parity_segment_depth(dev
);
2764 block_map
= map_migr_block(dev
, block_rel
);
2765 return block_map
+ parity_depth
* segment
;
2767 case MIGR_REBUILD
: {
2768 __u32 stripes_per_unit
;
2771 stripes_per_unit
= num_stripes_per_unit_rebuild(dev
);
2772 migr_chunk
= migr_strip_blocks_rebuild(dev
);
2773 return migr_chunk
* stripes_per_unit
;
2775 case MIGR_STATE_CHANGE
:
2781 static int imsm_level_to_layout(int level
)
2789 return ALGORITHM_LEFT_ASYMMETRIC
;
2796 /*******************************************************************************
2797 * Function: read_imsm_migr_rec
2798 * Description: Function reads imsm migration record from last sector of disk
2800 * fd : disk descriptor
2801 * super : metadata info
2805 ******************************************************************************/
2806 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
)
2809 unsigned int sector_size
= super
->sector_size
;
2810 unsigned long long dsize
;
2812 get_dev_size(fd
, NULL
, &dsize
);
2813 if (lseek64(fd
, dsize
- (sector_size
*MIGR_REC_SECTOR_POSITION
),
2815 pr_err("Cannot seek to anchor block: %s\n",
2819 if (read(fd
, super
->migr_rec_buf
,
2820 MIGR_REC_BUF_SECTORS
*sector_size
) !=
2821 MIGR_REC_BUF_SECTORS
*sector_size
) {
2822 pr_err("Cannot read migr record block: %s\n",
2827 if (sector_size
== 4096)
2828 convert_from_4k_imsm_migr_rec(super
);
2834 static struct imsm_dev
*imsm_get_device_during_migration(
2835 struct intel_super
*super
)
2838 struct intel_dev
*dv
;
2840 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
2841 if (is_gen_migration(dv
->dev
))
2847 /*******************************************************************************
2848 * Function: load_imsm_migr_rec
2849 * Description: Function reads imsm migration record (it is stored at the last
2852 * super : imsm internal array info
2853 * info : general array info
2857 * -2 : no migration in progress
2858 ******************************************************************************/
2859 static int load_imsm_migr_rec(struct intel_super
*super
, struct mdinfo
*info
)
2866 struct imsm_dev
*dev
;
2867 struct imsm_map
*map
;
2870 /* find map under migration */
2871 dev
= imsm_get_device_during_migration(super
);
2872 /* nothing to load,no migration in progress?
2878 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
2879 /* read only from one of the first two slots */
2880 if ((sd
->disk
.raid_disk
< 0) ||
2881 (sd
->disk
.raid_disk
> 1))
2884 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2885 fd
= dev_open(nm
, O_RDONLY
);
2891 map
= get_imsm_map(dev
, MAP_0
);
2892 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2893 /* skip spare and failed disks
2897 /* read only from one of the first two slots */
2899 slot
= get_imsm_disk_slot(map
, dl
->index
);
2900 if (map
== NULL
|| slot
> 1 || slot
< 0)
2902 sprintf(nm
, "%d:%d", dl
->major
, dl
->minor
);
2903 fd
= dev_open(nm
, O_RDONLY
);
2910 retval
= read_imsm_migr_rec(fd
, super
);
2919 /*******************************************************************************
2920 * function: imsm_create_metadata_checkpoint_update
2921 * Description: It creates update for checkpoint change.
2923 * super : imsm internal array info
2924 * u : pointer to prepared update
2927 * If length is equal to 0, input pointer u contains no update
2928 ******************************************************************************/
2929 static int imsm_create_metadata_checkpoint_update(
2930 struct intel_super
*super
,
2931 struct imsm_update_general_migration_checkpoint
**u
)
2934 int update_memory_size
= 0;
2936 dprintf("(enter)\n");
2942 /* size of all update data without anchor */
2943 update_memory_size
=
2944 sizeof(struct imsm_update_general_migration_checkpoint
);
2946 *u
= xcalloc(1, update_memory_size
);
2948 dprintf("error: cannot get memory\n");
2951 (*u
)->type
= update_general_migration_checkpoint
;
2952 (*u
)->curr_migr_unit
= __le32_to_cpu(super
->migr_rec
->curr_migr_unit
);
2953 dprintf("prepared for %u\n", (*u
)->curr_migr_unit
);
2955 return update_memory_size
;
2958 static void imsm_update_metadata_locally(struct supertype
*st
,
2959 void *buf
, int len
);
2961 /*******************************************************************************
2962 * Function: write_imsm_migr_rec
2963 * Description: Function writes imsm migration record
2964 * (at the last sector of disk)
2966 * super : imsm internal array info
2970 ******************************************************************************/
2971 static int write_imsm_migr_rec(struct supertype
*st
)
2973 struct intel_super
*super
= st
->sb
;
2974 unsigned int sector_size
= super
->sector_size
;
2975 unsigned long long dsize
;
2981 struct imsm_update_general_migration_checkpoint
*u
;
2982 struct imsm_dev
*dev
;
2983 struct imsm_map
*map
;
2985 /* find map under migration */
2986 dev
= imsm_get_device_during_migration(super
);
2987 /* if no migration, write buffer anyway to clear migr_record
2988 * on disk based on first available device
2991 dev
= get_imsm_dev(super
, super
->current_vol
< 0 ? 0 :
2992 super
->current_vol
);
2994 map
= get_imsm_map(dev
, MAP_0
);
2996 if (sector_size
== 4096)
2997 convert_to_4k_imsm_migr_rec(super
);
2998 for (sd
= super
->disks
; sd
; sd
= sd
->next
) {
3001 /* skip failed and spare devices */
3004 /* write to 2 first slots only */
3006 slot
= get_imsm_disk_slot(map
, sd
->index
);
3007 if (map
== NULL
|| slot
> 1 || slot
< 0)
3010 sprintf(nm
, "%d:%d", sd
->major
, sd
->minor
);
3011 fd
= dev_open(nm
, O_RDWR
);
3014 get_dev_size(fd
, NULL
, &dsize
);
3015 if (lseek64(fd
, dsize
- (MIGR_REC_SECTOR_POSITION
*sector_size
),
3017 pr_err("Cannot seek to anchor block: %s\n",
3021 if (write(fd
, super
->migr_rec_buf
,
3022 MIGR_REC_BUF_SECTORS
*sector_size
) !=
3023 MIGR_REC_BUF_SECTORS
*sector_size
) {
3024 pr_err("Cannot write migr record block: %s\n",
3031 if (sector_size
== 4096)
3032 convert_from_4k_imsm_migr_rec(super
);
3033 /* update checkpoint information in metadata */
3034 len
= imsm_create_metadata_checkpoint_update(super
, &u
);
3036 dprintf("imsm: Cannot prepare update\n");
3039 /* update metadata locally */
3040 imsm_update_metadata_locally(st
, u
, len
);
3041 /* and possibly remotely */
3042 if (st
->update_tail
) {
3043 append_metadata_update(st
, u
, len
);
3044 /* during reshape we do all work inside metadata handler
3045 * manage_reshape(), so metadata update has to be triggered
3048 flush_metadata_updates(st
);
3049 st
->update_tail
= &st
->updates
;
3059 #endif /* MDASSEMBLE */
3061 /* spare/missing disks activations are not allowe when
3062 * array/container performs reshape operation, because
3063 * all arrays in container works on the same disks set
3065 int imsm_reshape_blocks_arrays_changes(struct intel_super
*super
)
3068 struct intel_dev
*i_dev
;
3069 struct imsm_dev
*dev
;
3071 /* check whole container
3073 for (i_dev
= super
->devlist
; i_dev
; i_dev
= i_dev
->next
) {
3075 if (is_gen_migration(dev
)) {
3076 /* No repair during any migration in container
3084 static unsigned long long imsm_component_size_aligment_check(int level
,
3086 unsigned int sector_size
,
3087 unsigned long long component_size
)
3089 unsigned int component_size_alligment
;
3091 /* check component size aligment
3093 component_size_alligment
= component_size
% (chunk_size
/sector_size
);
3095 dprintf("(Level: %i, chunk_size = %i, component_size = %llu), component_size_alligment = %u\n",
3096 level
, chunk_size
, component_size
,
3097 component_size_alligment
);
3099 if (component_size_alligment
&& (level
!= 1) && (level
!= UnSet
)) {
3100 dprintf("imsm: reported component size alligned from %llu ",
3102 component_size
-= component_size_alligment
;
3103 dprintf_cont("to %llu (%i).\n",
3104 component_size
, component_size_alligment
);
3107 return component_size
;
3110 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
, char *dmap
)
3112 struct intel_super
*super
= st
->sb
;
3113 struct migr_record
*migr_rec
= super
->migr_rec
;
3114 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
3115 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
3116 struct imsm_map
*prev_map
= get_imsm_map(dev
, MAP_1
);
3117 struct imsm_map
*map_to_analyse
= map
;
3119 int map_disks
= info
->array
.raid_disks
;
3121 memset(info
, 0, sizeof(*info
));
3123 map_to_analyse
= prev_map
;
3125 dl
= super
->current_disk
;
3127 info
->container_member
= super
->current_vol
;
3128 info
->array
.raid_disks
= map
->num_members
;
3129 info
->array
.level
= get_imsm_raid_level(map_to_analyse
);
3130 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
3131 info
->array
.md_minor
= -1;
3132 info
->array
.ctime
= 0;
3133 info
->array
.utime
= 0;
3134 info
->array
.chunk_size
=
3135 __le16_to_cpu(map_to_analyse
->blocks_per_strip
) << 9;
3136 info
->array
.state
= !dev
->vol
.dirty
;
3137 info
->custom_array_size
= __le32_to_cpu(dev
->size_high
);
3138 info
->custom_array_size
<<= 32;
3139 info
->custom_array_size
|= __le32_to_cpu(dev
->size_low
);
3140 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
3142 if (is_gen_migration(dev
)) {
3143 info
->reshape_active
= 1;
3144 info
->new_level
= get_imsm_raid_level(map
);
3145 info
->new_layout
= imsm_level_to_layout(info
->new_level
);
3146 info
->new_chunk
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
3147 info
->delta_disks
= map
->num_members
- prev_map
->num_members
;
3148 if (info
->delta_disks
) {
3149 /* this needs to be applied to every array
3152 info
->reshape_active
= CONTAINER_RESHAPE
;
3154 /* We shape information that we give to md might have to be
3155 * modify to cope with md's requirement for reshaping arrays.
3156 * For example, when reshaping a RAID0, md requires it to be
3157 * presented as a degraded RAID4.
3158 * Also if a RAID0 is migrating to a RAID5 we need to specify
3159 * the array as already being RAID5, but the 'before' layout
3160 * is a RAID4-like layout.
3162 switch (info
->array
.level
) {
3164 switch(info
->new_level
) {
3166 /* conversion is happening as RAID4 */
3167 info
->array
.level
= 4;
3168 info
->array
.raid_disks
+= 1;
3171 /* conversion is happening as RAID5 */
3172 info
->array
.level
= 5;
3173 info
->array
.layout
= ALGORITHM_PARITY_N
;
3174 info
->delta_disks
-= 1;
3177 /* FIXME error message */
3178 info
->array
.level
= UnSet
;
3184 info
->new_level
= UnSet
;
3185 info
->new_layout
= UnSet
;
3186 info
->new_chunk
= info
->array
.chunk_size
;
3187 info
->delta_disks
= 0;
3191 info
->disk
.major
= dl
->major
;
3192 info
->disk
.minor
= dl
->minor
;
3193 info
->disk
.number
= dl
->index
;
3194 info
->disk
.raid_disk
= get_imsm_disk_slot(map_to_analyse
,
3198 info
->data_offset
= pba_of_lba0(map_to_analyse
);
3200 if (info
->array
.level
== 5) {
3201 info
->component_size
= num_data_stripes(map_to_analyse
) *
3202 map_to_analyse
->blocks_per_strip
;
3204 info
->component_size
= blocks_per_member(map_to_analyse
);
3207 info
->component_size
= imsm_component_size_aligment_check(
3209 info
->array
.chunk_size
,
3211 info
->component_size
);
3212 info
->bb
.supported
= 0;
3214 memset(info
->uuid
, 0, sizeof(info
->uuid
));
3215 info
->recovery_start
= MaxSector
;
3217 info
->reshape_progress
= 0;
3218 info
->resync_start
= MaxSector
;
3219 if ((map_to_analyse
->map_state
== IMSM_T_STATE_UNINITIALIZED
||
3221 imsm_reshape_blocks_arrays_changes(super
) == 0) {
3222 info
->resync_start
= 0;
3224 if (dev
->vol
.migr_state
) {
3225 switch (migr_type(dev
)) {
3228 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
3230 __u64 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
3232 info
->resync_start
= blocks_per_unit
* units
;
3235 case MIGR_GEN_MIGR
: {
3236 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
3238 __u64 units
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
3239 unsigned long long array_blocks
;
3242 if (__le32_to_cpu(migr_rec
->ascending_migr
) &&
3244 (__le32_to_cpu(migr_rec
->num_migr_units
)-1)) &&
3245 (super
->migr_rec
->rec_status
==
3246 __cpu_to_le32(UNIT_SRC_IN_CP_AREA
)))
3249 info
->reshape_progress
= blocks_per_unit
* units
;
3251 dprintf("IMSM: General Migration checkpoint : %llu (%llu) -> read reshape progress : %llu\n",
3252 (unsigned long long)units
,
3253 (unsigned long long)blocks_per_unit
,
3254 info
->reshape_progress
);
3256 used_disks
= imsm_num_data_members(dev
, MAP_1
);
3257 if (used_disks
> 0) {
3258 array_blocks
= blocks_per_member(map
) *
3260 /* round array size down to closest MB
3262 info
->custom_array_size
= (array_blocks
3263 >> SECT_PER_MB_SHIFT
)
3264 << SECT_PER_MB_SHIFT
;
3268 /* we could emulate the checkpointing of
3269 * 'sync_action=check' migrations, but for now
3270 * we just immediately complete them
3273 /* this is handled by container_content_imsm() */
3274 case MIGR_STATE_CHANGE
:
3275 /* FIXME handle other migrations */
3277 /* we are not dirty, so... */
3278 info
->resync_start
= MaxSector
;
3282 strncpy(info
->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
3283 info
->name
[MAX_RAID_SERIAL_LEN
] = 0;
3285 info
->array
.major_version
= -1;
3286 info
->array
.minor_version
= -2;
3287 sprintf(info
->text_version
, "/%s/%d", st
->container_devnm
, info
->container_member
);
3288 info
->safe_mode_delay
= 4000; /* 4 secs like the Matrix driver */
3289 uuid_from_super_imsm(st
, info
->uuid
);
3293 for (i
=0; i
<map_disks
; i
++) {
3295 if (i
< info
->array
.raid_disks
) {
3296 struct imsm_disk
*dsk
;
3297 j
= get_imsm_disk_idx(dev
, i
, MAP_X
);
3298 dsk
= get_imsm_disk(super
, j
);
3299 if (dsk
&& (dsk
->status
& CONFIGURED_DISK
))
3306 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
,
3307 int failed
, int look_in_map
);
3309 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
,
3313 static void manage_second_map(struct intel_super
*super
, struct imsm_dev
*dev
)
3315 if (is_gen_migration(dev
)) {
3318 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
3320 failed
= imsm_count_failed(super
, dev
, MAP_1
);
3321 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_1
);
3322 if (map2
->map_state
!= map_state
) {
3323 map2
->map_state
= map_state
;
3324 super
->updates_pending
++;
3330 static struct imsm_disk
*get_imsm_missing(struct intel_super
*super
, __u8 index
)
3334 for (d
= super
->missing
; d
; d
= d
->next
)
3335 if (d
->index
== index
)
3340 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
)
3342 struct intel_super
*super
= st
->sb
;
3343 struct imsm_disk
*disk
;
3344 int map_disks
= info
->array
.raid_disks
;
3345 int max_enough
= -1;
3347 struct imsm_super
*mpb
;
3349 if (super
->current_vol
>= 0) {
3350 getinfo_super_imsm_volume(st
, info
, map
);
3353 memset(info
, 0, sizeof(*info
));
3355 /* Set raid_disks to zero so that Assemble will always pull in valid
3358 info
->array
.raid_disks
= 0;
3359 info
->array
.level
= LEVEL_CONTAINER
;
3360 info
->array
.layout
= 0;
3361 info
->array
.md_minor
= -1;
3362 info
->array
.ctime
= 0; /* N/A for imsm */
3363 info
->array
.utime
= 0;
3364 info
->array
.chunk_size
= 0;
3366 info
->disk
.major
= 0;
3367 info
->disk
.minor
= 0;
3368 info
->disk
.raid_disk
= -1;
3369 info
->reshape_active
= 0;
3370 info
->array
.major_version
= -1;
3371 info
->array
.minor_version
= -2;
3372 strcpy(info
->text_version
, "imsm");
3373 info
->safe_mode_delay
= 0;
3374 info
->disk
.number
= -1;
3375 info
->disk
.state
= 0;
3377 info
->recovery_start
= MaxSector
;
3378 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
3379 info
->bb
.supported
= 0;
3381 /* do we have the all the insync disks that we expect? */
3382 mpb
= super
->anchor
;
3383 info
->events
= __le32_to_cpu(mpb
->generation_num
);
3385 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
3386 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
3387 int failed
, enough
, j
, missing
= 0;
3388 struct imsm_map
*map
;
3391 failed
= imsm_count_failed(super
, dev
, MAP_0
);
3392 state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
3393 map
= get_imsm_map(dev
, MAP_0
);
3395 /* any newly missing disks?
3396 * (catches single-degraded vs double-degraded)
3398 for (j
= 0; j
< map
->num_members
; j
++) {
3399 __u32 ord
= get_imsm_ord_tbl_ent(dev
, j
, MAP_0
);
3400 __u32 idx
= ord_to_idx(ord
);
3402 if (!(ord
& IMSM_ORD_REBUILD
) &&
3403 get_imsm_missing(super
, idx
)) {
3409 if (state
== IMSM_T_STATE_FAILED
)
3411 else if (state
== IMSM_T_STATE_DEGRADED
&&
3412 (state
!= map
->map_state
|| missing
))
3414 else /* we're normal, or already degraded */
3416 if (is_gen_migration(dev
) && missing
) {
3417 /* during general migration we need all disks
3418 * that process is running on.
3419 * No new missing disk is allowed.
3423 /* no more checks necessary
3427 /* in the missing/failed disk case check to see
3428 * if at least one array is runnable
3430 max_enough
= max(max_enough
, enough
);
3432 dprintf("enough: %d\n", max_enough
);
3433 info
->container_enough
= max_enough
;
3436 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
3438 disk
= &super
->disks
->disk
;
3439 info
->data_offset
= total_blocks(&super
->disks
->disk
) - reserved
;
3440 info
->component_size
= reserved
;
3441 info
->disk
.state
= is_configured(disk
) ? (1 << MD_DISK_ACTIVE
) : 0;
3442 /* we don't change info->disk.raid_disk here because
3443 * this state will be finalized in mdmon after we have
3444 * found the 'most fresh' version of the metadata
3446 info
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
3447 info
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
3450 /* only call uuid_from_super_imsm when this disk is part of a populated container,
3451 * ->compare_super may have updated the 'num_raid_devs' field for spares
3453 if (info
->disk
.state
& (1 << MD_DISK_SYNC
) || super
->anchor
->num_raid_devs
)
3454 uuid_from_super_imsm(st
, info
->uuid
);
3456 memcpy(info
->uuid
, uuid_zero
, sizeof(uuid_zero
));
3458 /* I don't know how to compute 'map' on imsm, so use safe default */
3461 for (i
= 0; i
< map_disks
; i
++)
3467 /* allocates memory and fills disk in mdinfo structure
3468 * for each disk in array */
3469 struct mdinfo
*getinfo_super_disks_imsm(struct supertype
*st
)
3471 struct mdinfo
*mddev
;
3472 struct intel_super
*super
= st
->sb
;
3473 struct imsm_disk
*disk
;
3476 if (!super
|| !super
->disks
)
3479 mddev
= xcalloc(1, sizeof(*mddev
));
3483 tmp
= xcalloc(1, sizeof(*tmp
));
3485 tmp
->next
= mddev
->devs
;
3487 tmp
->disk
.number
= count
++;
3488 tmp
->disk
.major
= dl
->major
;
3489 tmp
->disk
.minor
= dl
->minor
;
3490 tmp
->disk
.state
= is_configured(disk
) ?
3491 (1 << MD_DISK_ACTIVE
) : 0;
3492 tmp
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
3493 tmp
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
3494 tmp
->disk
.raid_disk
= -1;
3500 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
3501 char *update
, char *devname
, int verbose
,
3502 int uuid_set
, char *homehost
)
3504 /* For 'assemble' and 'force' we need to return non-zero if any
3505 * change was made. For others, the return value is ignored.
3506 * Update options are:
3507 * force-one : This device looks a bit old but needs to be included,
3508 * update age info appropriately.
3509 * assemble: clear any 'faulty' flag to allow this device to
3511 * force-array: Array is degraded but being forced, mark it clean
3512 * if that will be needed to assemble it.
3514 * newdev: not used ????
3515 * grow: Array has gained a new device - this is currently for
3517 * resync: mark as dirty so a resync will happen.
3518 * name: update the name - preserving the homehost
3519 * uuid: Change the uuid of the array to match watch is given
3521 * Following are not relevant for this imsm:
3522 * sparc2.2 : update from old dodgey metadata
3523 * super-minor: change the preferred_minor number
3524 * summaries: update redundant counters.
3525 * homehost: update the recorded homehost
3526 * _reshape_progress: record new reshape_progress position.
3529 struct intel_super
*super
= st
->sb
;
3530 struct imsm_super
*mpb
;
3532 /* we can only update container info */
3533 if (!super
|| super
->current_vol
>= 0 || !super
->anchor
)
3536 mpb
= super
->anchor
;
3538 if (strcmp(update
, "uuid") == 0) {
3539 /* We take this to mean that the family_num should be updated.
3540 * However that is much smaller than the uuid so we cannot really
3541 * allow an explicit uuid to be given. And it is hard to reliably
3543 * So if !uuid_set we know the current uuid is random and just used
3544 * the first 'int' and copy it to the other 3 positions.
3545 * Otherwise we require the 4 'int's to be the same as would be the
3546 * case if we are using a random uuid. So an explicit uuid will be
3547 * accepted as long as all for ints are the same... which shouldn't hurt
3550 info
->uuid
[1] = info
->uuid
[2] = info
->uuid
[3] = info
->uuid
[0];
3553 if (info
->uuid
[0] != info
->uuid
[1] ||
3554 info
->uuid
[1] != info
->uuid
[2] ||
3555 info
->uuid
[2] != info
->uuid
[3])
3561 mpb
->orig_family_num
= info
->uuid
[0];
3562 } else if (strcmp(update
, "assemble") == 0)
3567 /* successful update? recompute checksum */
3569 mpb
->check_sum
= __le32_to_cpu(__gen_imsm_checksum(mpb
));
3574 static size_t disks_to_mpb_size(int disks
)
3578 size
= sizeof(struct imsm_super
);
3579 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
3580 size
+= 2 * sizeof(struct imsm_dev
);
3581 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
3582 size
+= (4 - 2) * sizeof(struct imsm_map
);
3583 /* 4 possible disk_ord_tbl's */
3584 size
+= 4 * (disks
- 1) * sizeof(__u32
);
3585 /* maximum bbm log */
3586 size
+= sizeof(struct bbm_log
);
3591 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
,
3592 unsigned long long data_offset
)
3594 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
3597 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
3600 static void free_devlist(struct intel_super
*super
)
3602 struct intel_dev
*dv
;
3604 while (super
->devlist
) {
3605 dv
= super
->devlist
->next
;
3606 free(super
->devlist
->dev
);
3607 free(super
->devlist
);
3608 super
->devlist
= dv
;
3612 static void imsm_copy_dev(struct imsm_dev
*dest
, struct imsm_dev
*src
)
3614 memcpy(dest
, src
, sizeof_imsm_dev(src
, 0));
3617 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
3621 * 0 same, or first was empty, and second was copied
3622 * 1 second had wrong number
3624 * 3 wrong other info
3626 struct intel_super
*first
= st
->sb
;
3627 struct intel_super
*sec
= tst
->sb
;
3634 /* in platform dependent environment test if the disks
3635 * use the same Intel hba
3636 * If not on Intel hba at all, allow anything.
3638 if (!check_env("IMSM_NO_PLATFORM") && first
->hba
&& sec
->hba
) {
3639 if (first
->hba
->type
!= sec
->hba
->type
) {
3641 "HBAs of devices do not match %s != %s\n",
3642 get_sys_dev_type(first
->hba
->type
),
3643 get_sys_dev_type(sec
->hba
->type
));
3646 if (first
->orom
!= sec
->orom
) {
3648 "HBAs of devices do not match %s != %s\n",
3649 first
->hba
->pci_id
, sec
->hba
->pci_id
);
3654 /* if an anchor does not have num_raid_devs set then it is a free
3657 if (first
->anchor
->num_raid_devs
> 0 &&
3658 sec
->anchor
->num_raid_devs
> 0) {
3659 /* Determine if these disks might ever have been
3660 * related. Further disambiguation can only take place
3661 * in load_super_imsm_all
3663 __u32 first_family
= first
->anchor
->orig_family_num
;
3664 __u32 sec_family
= sec
->anchor
->orig_family_num
;
3666 if (memcmp(first
->anchor
->sig
, sec
->anchor
->sig
,
3667 MAX_SIGNATURE_LENGTH
) != 0)
3670 if (first_family
== 0)
3671 first_family
= first
->anchor
->family_num
;
3672 if (sec_family
== 0)
3673 sec_family
= sec
->anchor
->family_num
;
3675 if (first_family
!= sec_family
)
3680 /* if 'first' is a spare promote it to a populated mpb with sec's
3683 if (first
->anchor
->num_raid_devs
== 0 &&
3684 sec
->anchor
->num_raid_devs
> 0) {
3686 struct intel_dev
*dv
;
3687 struct imsm_dev
*dev
;
3689 /* we need to copy raid device info from sec if an allocation
3690 * fails here we don't associate the spare
3692 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++) {
3693 dv
= xmalloc(sizeof(*dv
));
3694 dev
= xmalloc(sizeof_imsm_dev(get_imsm_dev(sec
, i
), 1));
3697 dv
->next
= first
->devlist
;
3698 first
->devlist
= dv
;
3700 if (i
< sec
->anchor
->num_raid_devs
) {
3701 /* allocation failure */
3702 free_devlist(first
);
3703 pr_err("imsm: failed to associate spare\n");
3706 first
->anchor
->num_raid_devs
= sec
->anchor
->num_raid_devs
;
3707 first
->anchor
->orig_family_num
= sec
->anchor
->orig_family_num
;
3708 first
->anchor
->family_num
= sec
->anchor
->family_num
;
3709 memcpy(first
->anchor
->sig
, sec
->anchor
->sig
, MAX_SIGNATURE_LENGTH
);
3710 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++)
3711 imsm_copy_dev(get_imsm_dev(first
, i
), get_imsm_dev(sec
, i
));
3717 static void fd2devname(int fd
, char *name
)
3721 char dname
[PATH_MAX
];
3726 if (fstat(fd
, &st
) != 0)
3728 sprintf(path
, "/sys/dev/block/%d:%d",
3729 major(st
.st_rdev
), minor(st
.st_rdev
));
3731 rv
= readlink(path
, dname
, sizeof(dname
)-1);
3736 nm
= strrchr(dname
, '/');
3739 snprintf(name
, MAX_RAID_SERIAL_LEN
, "/dev/%s", nm
);
3743 static int nvme_get_serial(int fd
, void *buf
, size_t buf_len
)
3746 char *name
= fd2kname(fd
);
3751 if (strncmp(name
, "nvme", 4) != 0)
3754 snprintf(path
, sizeof(path
) - 1, "/sys/block/%s/device/serial", name
);
3756 return load_sys(path
, buf
, buf_len
);
3759 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
3761 static int imsm_read_serial(int fd
, char *devname
,
3762 __u8 serial
[MAX_RAID_SERIAL_LEN
])
3771 memset(buf
, 0, sizeof(buf
));
3773 rv
= nvme_get_serial(fd
, buf
, sizeof(buf
));
3776 rv
= scsi_get_serial(fd
, buf
, sizeof(buf
));
3778 if (rv
&& check_env("IMSM_DEVNAME_AS_SERIAL")) {
3779 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
3780 fd2devname(fd
, (char *) serial
);
3786 pr_err("Failed to retrieve serial for %s\n",
3791 /* trim all whitespace and non-printable characters and convert
3794 for (i
= 0, dest
= buf
; i
< sizeof(buf
) && buf
[i
]; i
++) {
3797 /* ':' is reserved for use in placeholder serial
3798 * numbers for missing disks
3809 /* truncate leading characters */
3810 if (len
> MAX_RAID_SERIAL_LEN
) {
3811 dest
+= len
- MAX_RAID_SERIAL_LEN
;
3812 len
= MAX_RAID_SERIAL_LEN
;
3815 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
3816 memcpy(serial
, dest
, len
);
3821 static int serialcmp(__u8
*s1
, __u8
*s2
)
3823 return strncmp((char *) s1
, (char *) s2
, MAX_RAID_SERIAL_LEN
);
3826 static void serialcpy(__u8
*dest
, __u8
*src
)
3828 strncpy((char *) dest
, (char *) src
, MAX_RAID_SERIAL_LEN
);
3831 static struct dl
*serial_to_dl(__u8
*serial
, struct intel_super
*super
)
3835 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
3836 if (serialcmp(dl
->serial
, serial
) == 0)
3842 static struct imsm_disk
*
3843 __serial_to_disk(__u8
*serial
, struct imsm_super
*mpb
, int *idx
)
3847 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3848 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
3850 if (serialcmp(disk
->serial
, serial
) == 0) {
3861 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
3863 struct imsm_disk
*disk
;
3868 __u8 serial
[MAX_RAID_SERIAL_LEN
];
3870 rv
= imsm_read_serial(fd
, devname
, serial
);
3875 dl
= xcalloc(1, sizeof(*dl
));
3878 dl
->major
= major(stb
.st_rdev
);
3879 dl
->minor
= minor(stb
.st_rdev
);
3880 dl
->next
= super
->disks
;
3881 dl
->fd
= keep_fd
? fd
: -1;
3882 assert(super
->disks
== NULL
);
3884 serialcpy(dl
->serial
, serial
);
3887 fd2devname(fd
, name
);
3889 dl
->devname
= xstrdup(devname
);
3891 dl
->devname
= xstrdup(name
);
3893 /* look up this disk's index in the current anchor */
3894 disk
= __serial_to_disk(dl
->serial
, super
->anchor
, &dl
->index
);
3897 /* only set index on disks that are a member of a
3898 * populated contianer, i.e. one with raid_devs
3900 if (is_failed(&dl
->disk
))
3902 else if (is_spare(&dl
->disk
))
3910 /* When migrating map0 contains the 'destination' state while map1
3911 * contains the current state. When not migrating map0 contains the
3912 * current state. This routine assumes that map[0].map_state is set to
3913 * the current array state before being called.
3915 * Migration is indicated by one of the following states
3916 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
3917 * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal
3918 * map1state=unitialized)
3919 * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal
3921 * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal
3922 * map1state=degraded)
3923 * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal
3926 static void migrate(struct imsm_dev
*dev
, struct intel_super
*super
,
3927 __u8 to_state
, int migr_type
)
3929 struct imsm_map
*dest
;
3930 struct imsm_map
*src
= get_imsm_map(dev
, MAP_0
);
3932 dev
->vol
.migr_state
= 1;
3933 set_migr_type(dev
, migr_type
);
3934 dev
->vol
.curr_migr_unit
= 0;
3935 dest
= get_imsm_map(dev
, MAP_1
);
3937 /* duplicate and then set the target end state in map[0] */
3938 memcpy(dest
, src
, sizeof_imsm_map(src
));
3939 if (migr_type
== MIGR_REBUILD
|| migr_type
== MIGR_GEN_MIGR
) {
3943 for (i
= 0; i
< src
->num_members
; i
++) {
3944 ord
= __le32_to_cpu(src
->disk_ord_tbl
[i
]);
3945 set_imsm_ord_tbl_ent(src
, i
, ord_to_idx(ord
));
3949 if (migr_type
== MIGR_GEN_MIGR
)
3950 /* Clear migration record */
3951 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
3953 src
->map_state
= to_state
;
3956 static void end_migration(struct imsm_dev
*dev
, struct intel_super
*super
,
3959 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
3960 struct imsm_map
*prev
= get_imsm_map(dev
, dev
->vol
.migr_state
== 0 ?
3964 /* merge any IMSM_ORD_REBUILD bits that were not successfully
3965 * completed in the last migration.
3967 * FIXME add support for raid-level-migration
3969 if (map_state
!= map
->map_state
&& (is_gen_migration(dev
) == 0) &&
3970 prev
->map_state
!= IMSM_T_STATE_UNINITIALIZED
) {
3971 /* when final map state is other than expected
3972 * merge maps (not for migration)
3976 for (i
= 0; i
< prev
->num_members
; i
++)
3977 for (j
= 0; j
< map
->num_members
; j
++)
3978 /* during online capacity expansion
3979 * disks position can be changed
3980 * if takeover is used
3982 if (ord_to_idx(map
->disk_ord_tbl
[j
]) ==
3983 ord_to_idx(prev
->disk_ord_tbl
[i
])) {
3984 map
->disk_ord_tbl
[j
] |=
3985 prev
->disk_ord_tbl
[i
];
3988 failed
= imsm_count_failed(super
, dev
, MAP_0
);
3989 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
3992 dev
->vol
.migr_state
= 0;
3993 set_migr_type(dev
, 0);
3994 dev
->vol
.curr_migr_unit
= 0;
3995 map
->map_state
= map_state
;
3999 static int parse_raid_devices(struct intel_super
*super
)
4002 struct imsm_dev
*dev_new
;
4003 size_t len
, len_migr
;
4005 size_t space_needed
= 0;
4006 struct imsm_super
*mpb
= super
->anchor
;
4008 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
4009 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
4010 struct intel_dev
*dv
;
4012 len
= sizeof_imsm_dev(dev_iter
, 0);
4013 len_migr
= sizeof_imsm_dev(dev_iter
, 1);
4015 space_needed
+= len_migr
- len
;
4017 dv
= xmalloc(sizeof(*dv
));
4018 if (max_len
< len_migr
)
4020 if (max_len
> len_migr
)
4021 space_needed
+= max_len
- len_migr
;
4022 dev_new
= xmalloc(max_len
);
4023 imsm_copy_dev(dev_new
, dev_iter
);
4026 dv
->next
= super
->devlist
;
4027 super
->devlist
= dv
;
4030 /* ensure that super->buf is large enough when all raid devices
4033 if (__le32_to_cpu(mpb
->mpb_size
) + space_needed
> super
->len
) {
4036 len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + space_needed
,
4037 super
->sector_size
);
4038 if (posix_memalign(&buf
, MAX_SECTOR_SIZE
, len
) != 0)
4041 memcpy(buf
, super
->buf
, super
->len
);
4042 memset(buf
+ super
->len
, 0, len
- super
->len
);
4048 super
->extra_space
+= space_needed
;
4053 /*******************************************************************************
4054 * Function: check_mpb_migr_compatibility
4055 * Description: Function checks for unsupported migration features:
4056 * - migration optimization area (pba_of_lba0)
4057 * - descending reshape (ascending_migr)
4059 * super : imsm metadata information
4061 * 0 : migration is compatible
4062 * -1 : migration is not compatible
4063 ******************************************************************************/
4064 int check_mpb_migr_compatibility(struct intel_super
*super
)
4066 struct imsm_map
*map0
, *map1
;
4067 struct migr_record
*migr_rec
= super
->migr_rec
;
4070 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
4071 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
4074 dev_iter
->vol
.migr_state
== 1 &&
4075 dev_iter
->vol
.migr_type
== MIGR_GEN_MIGR
) {
4076 /* This device is migrating */
4077 map0
= get_imsm_map(dev_iter
, MAP_0
);
4078 map1
= get_imsm_map(dev_iter
, MAP_1
);
4079 if (pba_of_lba0(map0
) != pba_of_lba0(map1
))
4080 /* migration optimization area was used */
4082 if (migr_rec
->ascending_migr
== 0
4083 && migr_rec
->dest_depth_per_unit
> 0)
4084 /* descending reshape not supported yet */
4091 static void __free_imsm(struct intel_super
*super
, int free_disks
);
4093 /* load_imsm_mpb - read matrix metadata
4094 * allocates super->mpb to be freed by free_imsm
4096 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
4098 unsigned long long dsize
;
4099 unsigned long long sectors
;
4100 unsigned int sector_size
= super
->sector_size
;
4102 struct imsm_super
*anchor
;
4105 get_dev_size(fd
, NULL
, &dsize
);
4106 if (dsize
< 2*sector_size
) {
4108 pr_err("%s: device to small for imsm\n",
4113 if (lseek64(fd
, dsize
- (sector_size
* 2), SEEK_SET
) < 0) {
4115 pr_err("Cannot seek to anchor block on %s: %s\n",
4116 devname
, strerror(errno
));
4120 if (posix_memalign((void **)&anchor
, sector_size
, sector_size
) != 0) {
4122 pr_err("Failed to allocate imsm anchor buffer on %s\n", devname
);
4125 if (read(fd
, anchor
, sector_size
) != sector_size
) {
4127 pr_err("Cannot read anchor block on %s: %s\n",
4128 devname
, strerror(errno
));
4133 if (strncmp((char *) anchor
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
4135 pr_err("no IMSM anchor on %s\n", devname
);
4140 __free_imsm(super
, 0);
4141 /* reload capability and hba */
4143 /* capability and hba must be updated with new super allocation */
4144 find_intel_hba_capability(fd
, super
, devname
);
4145 super
->len
= ROUND_UP(anchor
->mpb_size
, sector_size
);
4146 if (posix_memalign(&super
->buf
, MAX_SECTOR_SIZE
, super
->len
) != 0) {
4148 pr_err("unable to allocate %zu byte mpb buffer\n",
4153 memcpy(super
->buf
, anchor
, sector_size
);
4155 sectors
= mpb_sectors(anchor
, sector_size
) - 1;
4158 if (posix_memalign(&super
->migr_rec_buf
, sector_size
,
4159 MIGR_REC_BUF_SECTORS
*sector_size
) != 0) {
4160 pr_err("could not allocate migr_rec buffer\n");
4164 super
->clean_migration_record_by_mdmon
= 0;
4167 check_sum
= __gen_imsm_checksum(super
->anchor
);
4168 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
4170 pr_err("IMSM checksum %x != %x on %s\n",
4172 __le32_to_cpu(super
->anchor
->check_sum
),
4180 /* read the extended mpb */
4181 if (lseek64(fd
, dsize
- (sector_size
* (2 + sectors
)), SEEK_SET
) < 0) {
4183 pr_err("Cannot seek to extended mpb on %s: %s\n",
4184 devname
, strerror(errno
));
4188 if ((unsigned int)read(fd
, super
->buf
+ sector_size
,
4189 super
->len
- sector_size
) != super
->len
- sector_size
) {
4191 pr_err("Cannot read extended mpb on %s: %s\n",
4192 devname
, strerror(errno
));
4196 check_sum
= __gen_imsm_checksum(super
->anchor
);
4197 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
4199 pr_err("IMSM checksum %x != %x on %s\n",
4200 check_sum
, __le32_to_cpu(super
->anchor
->check_sum
),
4208 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
);
4210 /* clears hi bits in metadata if MPB_ATTRIB_2TB_DISK not set */
4211 static void clear_hi(struct intel_super
*super
)
4213 struct imsm_super
*mpb
= super
->anchor
;
4215 if (mpb
->attributes
& MPB_ATTRIB_2TB_DISK
)
4217 for (i
= 0; i
< mpb
->num_disks
; ++i
) {
4218 struct imsm_disk
*disk
= &mpb
->disk
[i
];
4219 disk
->total_blocks_hi
= 0;
4221 for (i
= 0; i
< mpb
->num_raid_devs
; ++i
) {
4222 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
4225 for (n
= 0; n
< 2; ++n
) {
4226 struct imsm_map
*map
= get_imsm_map(dev
, n
);
4229 map
->pba_of_lba0_hi
= 0;
4230 map
->blocks_per_member_hi
= 0;
4231 map
->num_data_stripes_hi
= 0;
4237 load_and_parse_mpb(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
4241 err
= load_imsm_mpb(fd
, super
, devname
);
4244 if (super
->sector_size
== 4096)
4245 convert_from_4k(super
);
4246 err
= load_imsm_disk(fd
, super
, devname
, keep_fd
);
4249 err
= parse_raid_devices(super
);
4252 err
= load_bbm_log(super
);
4257 static void __free_imsm_disk(struct dl
*d
)
4269 static void free_imsm_disks(struct intel_super
*super
)
4273 while (super
->disks
) {
4275 super
->disks
= d
->next
;
4276 __free_imsm_disk(d
);
4278 while (super
->disk_mgmt_list
) {
4279 d
= super
->disk_mgmt_list
;
4280 super
->disk_mgmt_list
= d
->next
;
4281 __free_imsm_disk(d
);
4283 while (super
->missing
) {
4285 super
->missing
= d
->next
;
4286 __free_imsm_disk(d
);
4291 /* free all the pieces hanging off of a super pointer */
4292 static void __free_imsm(struct intel_super
*super
, int free_disks
)
4294 struct intel_hba
*elem
, *next
;
4300 /* unlink capability description */
4302 if (super
->migr_rec_buf
) {
4303 free(super
->migr_rec_buf
);
4304 super
->migr_rec_buf
= NULL
;
4307 free_imsm_disks(super
);
4308 free_devlist(super
);
4312 free((void *)elem
->path
);
4318 free(super
->bbm_log
);
4322 static void free_imsm(struct intel_super
*super
)
4324 __free_imsm(super
, 1);
4325 free(super
->bb
.entries
);
4329 static void free_super_imsm(struct supertype
*st
)
4331 struct intel_super
*super
= st
->sb
;
4340 static struct intel_super
*alloc_super(void)
4342 struct intel_super
*super
= xcalloc(1, sizeof(*super
));
4344 super
->current_vol
= -1;
4345 super
->create_offset
= ~((unsigned long long) 0);
4347 super
->bb
.entries
= xmalloc(BBM_LOG_MAX_ENTRIES
*
4348 sizeof(struct md_bb_entry
));
4349 if (!super
->bb
.entries
) {
4358 * find and allocate hba and OROM/EFI based on valid fd of RAID component device
4360 static int find_intel_hba_capability(int fd
, struct intel_super
*super
, char *devname
)
4362 struct sys_dev
*hba_name
;
4365 if (fd
< 0 || check_env("IMSM_NO_PLATFORM")) {
4370 hba_name
= find_disk_attached_hba(fd
, NULL
);
4373 pr_err("%s is not attached to Intel(R) RAID controller.\n",
4377 rv
= attach_hba_to_super(super
, hba_name
);
4380 struct intel_hba
*hba
= super
->hba
;
4382 pr_err("%s is attached to Intel(R) %s %s (%s),\n"
4383 " but the container is assigned to Intel(R) %s %s (",
4385 get_sys_dev_type(hba_name
->type
),
4386 hba_name
->type
== SYS_DEV_VMD
? "domain" : "RAID controller",
4387 hba_name
->pci_id
? : "Err!",
4388 get_sys_dev_type(super
->hba
->type
),
4389 hba
->type
== SYS_DEV_VMD
? "domain" : "RAID controller");
4392 fprintf(stderr
, "%s", hba
->pci_id
? : "Err!");
4394 fprintf(stderr
, ", ");
4397 fprintf(stderr
, ").\n"
4398 " Mixing devices attached to different %s is not allowed.\n",
4399 hba_name
->type
== SYS_DEV_VMD
? "VMD domains" : "controllers");
4403 super
->orom
= find_imsm_capability(hba_name
);
4410 /* find_missing - helper routine for load_super_imsm_all that identifies
4411 * disks that have disappeared from the system. This routine relies on
4412 * the mpb being uptodate, which it is at load time.
4414 static int find_missing(struct intel_super
*super
)
4417 struct imsm_super
*mpb
= super
->anchor
;
4419 struct imsm_disk
*disk
;
4421 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4422 disk
= __get_imsm_disk(mpb
, i
);
4423 dl
= serial_to_dl(disk
->serial
, super
);
4427 dl
= xmalloc(sizeof(*dl
));
4431 dl
->devname
= xstrdup("missing");
4433 serialcpy(dl
->serial
, disk
->serial
);
4436 dl
->next
= super
->missing
;
4437 super
->missing
= dl
;
4444 static struct intel_disk
*disk_list_get(__u8
*serial
, struct intel_disk
*disk_list
)
4446 struct intel_disk
*idisk
= disk_list
;
4449 if (serialcmp(idisk
->disk
.serial
, serial
) == 0)
4451 idisk
= idisk
->next
;
4457 static int __prep_thunderdome(struct intel_super
**table
, int tbl_size
,
4458 struct intel_super
*super
,
4459 struct intel_disk
**disk_list
)
4461 struct imsm_disk
*d
= &super
->disks
->disk
;
4462 struct imsm_super
*mpb
= super
->anchor
;
4465 for (i
= 0; i
< tbl_size
; i
++) {
4466 struct imsm_super
*tbl_mpb
= table
[i
]->anchor
;
4467 struct imsm_disk
*tbl_d
= &table
[i
]->disks
->disk
;
4469 if (tbl_mpb
->family_num
== mpb
->family_num
) {
4470 if (tbl_mpb
->check_sum
== mpb
->check_sum
) {
4471 dprintf("mpb from %d:%d matches %d:%d\n",
4472 super
->disks
->major
,
4473 super
->disks
->minor
,
4474 table
[i
]->disks
->major
,
4475 table
[i
]->disks
->minor
);
4479 if (((is_configured(d
) && !is_configured(tbl_d
)) ||
4480 is_configured(d
) == is_configured(tbl_d
)) &&
4481 tbl_mpb
->generation_num
< mpb
->generation_num
) {
4482 /* current version of the mpb is a
4483 * better candidate than the one in
4484 * super_table, but copy over "cross
4485 * generational" status
4487 struct intel_disk
*idisk
;
4489 dprintf("mpb from %d:%d replaces %d:%d\n",
4490 super
->disks
->major
,
4491 super
->disks
->minor
,
4492 table
[i
]->disks
->major
,
4493 table
[i
]->disks
->minor
);
4495 idisk
= disk_list_get(tbl_d
->serial
, *disk_list
);
4496 if (idisk
&& is_failed(&idisk
->disk
))
4497 tbl_d
->status
|= FAILED_DISK
;
4500 struct intel_disk
*idisk
;
4501 struct imsm_disk
*disk
;
4503 /* tbl_mpb is more up to date, but copy
4504 * over cross generational status before
4507 disk
= __serial_to_disk(d
->serial
, mpb
, NULL
);
4508 if (disk
&& is_failed(disk
))
4509 d
->status
|= FAILED_DISK
;
4511 idisk
= disk_list_get(d
->serial
, *disk_list
);
4514 if (disk
&& is_configured(disk
))
4515 idisk
->disk
.status
|= CONFIGURED_DISK
;
4518 dprintf("mpb from %d:%d prefer %d:%d\n",
4519 super
->disks
->major
,
4520 super
->disks
->minor
,
4521 table
[i
]->disks
->major
,
4522 table
[i
]->disks
->minor
);
4530 table
[tbl_size
++] = super
;
4534 /* update/extend the merged list of imsm_disk records */
4535 for (j
= 0; j
< mpb
->num_disks
; j
++) {
4536 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, j
);
4537 struct intel_disk
*idisk
;
4539 idisk
= disk_list_get(disk
->serial
, *disk_list
);
4541 idisk
->disk
.status
|= disk
->status
;
4542 if (is_configured(&idisk
->disk
) ||
4543 is_failed(&idisk
->disk
))
4544 idisk
->disk
.status
&= ~(SPARE_DISK
);
4546 idisk
= xcalloc(1, sizeof(*idisk
));
4547 idisk
->owner
= IMSM_UNKNOWN_OWNER
;
4548 idisk
->disk
= *disk
;
4549 idisk
->next
= *disk_list
;
4553 if (serialcmp(idisk
->disk
.serial
, d
->serial
) == 0)
4560 static struct intel_super
*
4561 validate_members(struct intel_super
*super
, struct intel_disk
*disk_list
,
4564 struct imsm_super
*mpb
= super
->anchor
;
4568 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4569 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
4570 struct intel_disk
*idisk
;
4572 idisk
= disk_list_get(disk
->serial
, disk_list
);
4574 if (idisk
->owner
== owner
||
4575 idisk
->owner
== IMSM_UNKNOWN_OWNER
)
4578 dprintf("'%.16s' owner %d != %d\n",
4579 disk
->serial
, idisk
->owner
,
4582 dprintf("unknown disk %x [%d]: %.16s\n",
4583 __le32_to_cpu(mpb
->family_num
), i
,
4589 if (ok_count
== mpb
->num_disks
)
4594 static void show_conflicts(__u32 family_num
, struct intel_super
*super_list
)
4596 struct intel_super
*s
;
4598 for (s
= super_list
; s
; s
= s
->next
) {
4599 if (family_num
!= s
->anchor
->family_num
)
4601 pr_err("Conflict, offlining family %#x on '%s'\n",
4602 __le32_to_cpu(family_num
), s
->disks
->devname
);
4606 static struct intel_super
*
4607 imsm_thunderdome(struct intel_super
**super_list
, int len
)
4609 struct intel_super
*super_table
[len
];
4610 struct intel_disk
*disk_list
= NULL
;
4611 struct intel_super
*champion
, *spare
;
4612 struct intel_super
*s
, **del
;
4617 memset(super_table
, 0, sizeof(super_table
));
4618 for (s
= *super_list
; s
; s
= s
->next
)
4619 tbl_size
= __prep_thunderdome(super_table
, tbl_size
, s
, &disk_list
);
4621 for (i
= 0; i
< tbl_size
; i
++) {
4622 struct imsm_disk
*d
;
4623 struct intel_disk
*idisk
;
4624 struct imsm_super
*mpb
= super_table
[i
]->anchor
;
4627 d
= &s
->disks
->disk
;
4629 /* 'd' must appear in merged disk list for its
4630 * configuration to be valid
4632 idisk
= disk_list_get(d
->serial
, disk_list
);
4633 if (idisk
&& idisk
->owner
== i
)
4634 s
= validate_members(s
, disk_list
, i
);
4639 dprintf("marking family: %#x from %d:%d offline\n",
4641 super_table
[i
]->disks
->major
,
4642 super_table
[i
]->disks
->minor
);
4646 /* This is where the mdadm implementation differs from the Windows
4647 * driver which has no strict concept of a container. We can only
4648 * assemble one family from a container, so when returning a prodigal
4649 * array member to this system the code will not be able to disambiguate
4650 * the container contents that should be assembled ("foreign" versus
4651 * "local"). It requires user intervention to set the orig_family_num
4652 * to a new value to establish a new container. The Windows driver in
4653 * this situation fixes up the volume name in place and manages the
4654 * foreign array as an independent entity.
4659 for (i
= 0; i
< tbl_size
; i
++) {
4660 struct intel_super
*tbl_ent
= super_table
[i
];
4666 if (tbl_ent
->anchor
->num_raid_devs
== 0) {
4671 if (s
&& !is_spare
) {
4672 show_conflicts(tbl_ent
->anchor
->family_num
, *super_list
);
4674 } else if (!s
&& !is_spare
)
4687 pr_err("Chose family %#x on '%s', assemble conflicts to new container with '--update=uuid'\n",
4688 __le32_to_cpu(s
->anchor
->family_num
), s
->disks
->devname
);
4690 /* collect all dl's onto 'champion', and update them to
4691 * champion's version of the status
4693 for (s
= *super_list
; s
; s
= s
->next
) {
4694 struct imsm_super
*mpb
= champion
->anchor
;
4695 struct dl
*dl
= s
->disks
;
4700 mpb
->attributes
|= s
->anchor
->attributes
& MPB_ATTRIB_2TB_DISK
;
4702 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4703 struct imsm_disk
*disk
;
4705 disk
= __serial_to_disk(dl
->serial
, mpb
, &dl
->index
);
4708 /* only set index on disks that are a member of
4709 * a populated contianer, i.e. one with
4712 if (is_failed(&dl
->disk
))
4714 else if (is_spare(&dl
->disk
))
4720 if (i
>= mpb
->num_disks
) {
4721 struct intel_disk
*idisk
;
4723 idisk
= disk_list_get(dl
->serial
, disk_list
);
4724 if (idisk
&& is_spare(&idisk
->disk
) &&
4725 !is_failed(&idisk
->disk
) && !is_configured(&idisk
->disk
))
4733 dl
->next
= champion
->disks
;
4734 champion
->disks
= dl
;
4738 /* delete 'champion' from super_list */
4739 for (del
= super_list
; *del
; ) {
4740 if (*del
== champion
) {
4741 *del
= (*del
)->next
;
4744 del
= &(*del
)->next
;
4746 champion
->next
= NULL
;
4750 struct intel_disk
*idisk
= disk_list
;
4752 disk_list
= disk_list
->next
;
4760 get_sra_super_block(int fd
, struct intel_super
**super_list
, char *devname
, int *max
, int keep_fd
);
4761 static int get_super_block(struct intel_super
**super_list
, char *devnm
, char *devname
,
4762 int major
, int minor
, int keep_fd
);
4764 get_devlist_super_block(struct md_list
*devlist
, struct intel_super
**super_list
,
4765 int *max
, int keep_fd
);
4767 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
4768 char *devname
, struct md_list
*devlist
,
4771 struct intel_super
*super_list
= NULL
;
4772 struct intel_super
*super
= NULL
;
4777 /* 'fd' is an opened container */
4778 err
= get_sra_super_block(fd
, &super_list
, devname
, &i
, keep_fd
);
4780 /* get super block from devlist devices */
4781 err
= get_devlist_super_block(devlist
, &super_list
, &i
, keep_fd
);
4784 /* all mpbs enter, maybe one leaves */
4785 super
= imsm_thunderdome(&super_list
, i
);
4791 if (find_missing(super
) != 0) {
4797 /* load migration record */
4798 err
= load_imsm_migr_rec(super
, NULL
);
4800 /* migration is in progress,
4801 * but migr_rec cannot be loaded,
4807 /* Check migration compatibility */
4808 if (err
== 0 && check_mpb_migr_compatibility(super
) != 0) {
4809 pr_err("Unsupported migration detected");
4811 fprintf(stderr
, " on %s\n", devname
);
4813 fprintf(stderr
, " (IMSM).\n");
4822 while (super_list
) {
4823 struct intel_super
*s
= super_list
;
4825 super_list
= super_list
->next
;
4834 strcpy(st
->container_devnm
, fd2devnm(fd
));
4836 st
->container_devnm
[0] = 0;
4837 if (err
== 0 && st
->ss
== NULL
) {
4838 st
->ss
= &super_imsm
;
4839 st
->minor_version
= 0;
4840 st
->max_devs
= IMSM_MAX_DEVICES
;
4846 get_devlist_super_block(struct md_list
*devlist
, struct intel_super
**super_list
,
4847 int *max
, int keep_fd
)
4849 struct md_list
*tmpdev
;
4853 for (i
= 0, tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
4854 if (tmpdev
->used
!= 1)
4856 if (tmpdev
->container
== 1) {
4858 int fd
= dev_open(tmpdev
->devname
, O_RDONLY
|O_EXCL
);
4860 pr_err("cannot open device %s: %s\n",
4861 tmpdev
->devname
, strerror(errno
));
4865 err
= get_sra_super_block(fd
, super_list
,
4866 tmpdev
->devname
, &lmax
,
4875 int major
= major(tmpdev
->st_rdev
);
4876 int minor
= minor(tmpdev
->st_rdev
);
4877 err
= get_super_block(super_list
,
4894 static int get_super_block(struct intel_super
**super_list
, char *devnm
, char *devname
,
4895 int major
, int minor
, int keep_fd
)
4897 struct intel_super
*s
;
4909 sprintf(nm
, "%d:%d", major
, minor
);
4910 dfd
= dev_open(nm
, O_RDWR
);
4916 get_dev_sector_size(dfd
, NULL
, &s
->sector_size
);
4917 find_intel_hba_capability(dfd
, s
, devname
);
4918 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
4920 /* retry the load if we might have raced against mdmon */
4921 if (err
== 3 && devnm
&& mdmon_running(devnm
))
4922 for (retry
= 0; retry
< 3; retry
++) {
4924 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
4930 s
->next
= *super_list
;
4938 if (dfd
>= 0 && !keep_fd
)
4945 get_sra_super_block(int fd
, struct intel_super
**super_list
, char *devname
, int *max
, int keep_fd
)
4952 sra
= sysfs_read(fd
, NULL
, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
4956 if (sra
->array
.major_version
!= -1 ||
4957 sra
->array
.minor_version
!= -2 ||
4958 strcmp(sra
->text_version
, "imsm") != 0) {
4963 devnm
= fd2devnm(fd
);
4964 for (sd
= sra
->devs
, i
= 0; sd
; sd
= sd
->next
, i
++) {
4965 if (get_super_block(super_list
, devnm
, devname
,
4966 sd
->disk
.major
, sd
->disk
.minor
, keep_fd
) != 0) {
4977 static int load_container_imsm(struct supertype
*st
, int fd
, char *devname
)
4979 return load_super_imsm_all(st
, fd
, &st
->sb
, devname
, NULL
, 1);
4983 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
4985 struct intel_super
*super
;
4989 if (test_partition(fd
))
4990 /* IMSM not allowed on partitions */
4993 free_super_imsm(st
);
4995 super
= alloc_super();
4996 get_dev_sector_size(fd
, NULL
, &super
->sector_size
);
4999 /* Load hba and capabilities if they exist.
5000 * But do not preclude loading metadata in case capabilities or hba are
5001 * non-compliant and ignore_hw_compat is set.
5003 rv
= find_intel_hba_capability(fd
, super
, devname
);
5004 /* no orom/efi or non-intel hba of the disk */
5005 if (rv
!= 0 && st
->ignore_hw_compat
== 0) {
5007 pr_err("No OROM/EFI properties for %s\n", devname
);
5011 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
5013 /* retry the load if we might have raced against mdmon */
5015 struct mdstat_ent
*mdstat
= NULL
;
5016 char *name
= fd2kname(fd
);
5019 mdstat
= mdstat_by_component(name
);
5021 if (mdstat
&& mdmon_running(mdstat
->devnm
) && getpid() != mdmon_pid(mdstat
->devnm
)) {
5022 for (retry
= 0; retry
< 3; retry
++) {
5024 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
5030 free_mdstat(mdstat
);
5035 pr_err("Failed to load all information sections on %s\n", devname
);
5041 if (st
->ss
== NULL
) {
5042 st
->ss
= &super_imsm
;
5043 st
->minor_version
= 0;
5044 st
->max_devs
= IMSM_MAX_DEVICES
;
5047 /* load migration record */
5048 if (load_imsm_migr_rec(super
, NULL
) == 0) {
5049 /* Check for unsupported migration features */
5050 if (check_mpb_migr_compatibility(super
) != 0) {
5051 pr_err("Unsupported migration detected");
5053 fprintf(stderr
, " on %s\n", devname
);
5055 fprintf(stderr
, " (IMSM).\n");
5063 static __u16
info_to_blocks_per_strip(mdu_array_info_t
*info
)
5065 if (info
->level
== 1)
5067 return info
->chunk_size
>> 9;
5070 static unsigned long long info_to_blocks_per_member(mdu_array_info_t
*info
,
5071 unsigned long long size
)
5073 if (info
->level
== 1)
5076 return (size
* 2) & ~(info_to_blocks_per_strip(info
) - 1);
5079 static void imsm_update_version_info(struct intel_super
*super
)
5081 /* update the version and attributes */
5082 struct imsm_super
*mpb
= super
->anchor
;
5084 struct imsm_dev
*dev
;
5085 struct imsm_map
*map
;
5088 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5089 dev
= get_imsm_dev(super
, i
);
5090 map
= get_imsm_map(dev
, MAP_0
);
5091 if (__le32_to_cpu(dev
->size_high
) > 0)
5092 mpb
->attributes
|= MPB_ATTRIB_2TB
;
5094 /* FIXME detect when an array spans a port multiplier */
5096 mpb
->attributes
|= MPB_ATTRIB_PM
;
5099 if (mpb
->num_raid_devs
> 1 ||
5100 mpb
->attributes
!= MPB_ATTRIB_CHECKSUM_VERIFY
) {
5101 version
= MPB_VERSION_ATTRIBS
;
5102 switch (get_imsm_raid_level(map
)) {
5103 case 0: mpb
->attributes
|= MPB_ATTRIB_RAID0
; break;
5104 case 1: mpb
->attributes
|= MPB_ATTRIB_RAID1
; break;
5105 case 10: mpb
->attributes
|= MPB_ATTRIB_RAID10
; break;
5106 case 5: mpb
->attributes
|= MPB_ATTRIB_RAID5
; break;
5109 if (map
->num_members
>= 5)
5110 version
= MPB_VERSION_5OR6_DISK_ARRAY
;
5111 else if (dev
->status
== DEV_CLONE_N_GO
)
5112 version
= MPB_VERSION_CNG
;
5113 else if (get_imsm_raid_level(map
) == 5)
5114 version
= MPB_VERSION_RAID5
;
5115 else if (map
->num_members
>= 3)
5116 version
= MPB_VERSION_3OR4_DISK_ARRAY
;
5117 else if (get_imsm_raid_level(map
) == 1)
5118 version
= MPB_VERSION_RAID1
;
5120 version
= MPB_VERSION_RAID0
;
5122 strcpy(((char *) mpb
->sig
) + strlen(MPB_SIGNATURE
), version
);
5126 static int check_name(struct intel_super
*super
, char *name
, int quiet
)
5128 struct imsm_super
*mpb
= super
->anchor
;
5129 char *reason
= NULL
;
5132 if (strlen(name
) > MAX_RAID_SERIAL_LEN
)
5133 reason
= "must be 16 characters or less";
5135 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5136 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
5138 if (strncmp((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
) == 0) {
5139 reason
= "already exists";
5144 if (reason
&& !quiet
)
5145 pr_err("imsm volume name %s\n", reason
);
5150 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
5151 unsigned long long size
, char *name
,
5152 char *homehost
, int *uuid
,
5153 long long data_offset
)
5155 /* We are creating a volume inside a pre-existing container.
5156 * so st->sb is already set.
5158 struct intel_super
*super
= st
->sb
;
5159 unsigned int sector_size
= super
->sector_size
;
5160 struct imsm_super
*mpb
= super
->anchor
;
5161 struct intel_dev
*dv
;
5162 struct imsm_dev
*dev
;
5163 struct imsm_vol
*vol
;
5164 struct imsm_map
*map
;
5165 int idx
= mpb
->num_raid_devs
;
5167 unsigned long long array_blocks
;
5168 size_t size_old
, size_new
;
5169 unsigned long long num_data_stripes
;
5171 if (super
->orom
&& mpb
->num_raid_devs
>= super
->orom
->vpa
) {
5172 pr_err("This imsm-container already has the maximum of %d volumes\n", super
->orom
->vpa
);
5176 /* ensure the mpb is large enough for the new data */
5177 size_old
= __le32_to_cpu(mpb
->mpb_size
);
5178 size_new
= disks_to_mpb_size(info
->nr_disks
);
5179 if (size_new
> size_old
) {
5181 size_t size_round
= ROUND_UP(size_new
, sector_size
);
5183 if (posix_memalign(&mpb_new
, sector_size
, size_round
) != 0) {
5184 pr_err("could not allocate new mpb\n");
5187 if (posix_memalign(&super
->migr_rec_buf
, sector_size
,
5188 MIGR_REC_BUF_SECTORS
*sector_size
) != 0) {
5189 pr_err("could not allocate migr_rec buffer\n");
5195 memcpy(mpb_new
, mpb
, size_old
);
5198 super
->anchor
= mpb_new
;
5199 mpb
->mpb_size
= __cpu_to_le32(size_new
);
5200 memset(mpb_new
+ size_old
, 0, size_round
- size_old
);
5201 super
->len
= size_round
;
5203 super
->current_vol
= idx
;
5205 /* handle 'failed_disks' by either:
5206 * a) create dummy disk entries in the table if this the first
5207 * volume in the array. We add them here as this is the only
5208 * opportunity to add them. add_to_super_imsm_volume()
5209 * handles the non-failed disks and continues incrementing
5211 * b) validate that 'failed_disks' matches the current number
5212 * of missing disks if the container is populated
5214 if (super
->current_vol
== 0) {
5216 for (i
= 0; i
< info
->failed_disks
; i
++) {
5217 struct imsm_disk
*disk
;
5220 disk
= __get_imsm_disk(mpb
, i
);
5221 disk
->status
= CONFIGURED_DISK
| FAILED_DISK
;
5222 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
5223 snprintf((char *) disk
->serial
, MAX_RAID_SERIAL_LEN
,
5226 find_missing(super
);
5231 for (d
= super
->missing
; d
; d
= d
->next
)
5233 if (info
->failed_disks
> missing
) {
5234 pr_err("unable to add 'missing' disk to container\n");
5239 if (!check_name(super
, name
, 0))
5241 dv
= xmalloc(sizeof(*dv
));
5242 dev
= xcalloc(1, sizeof(*dev
) + sizeof(__u32
) * (info
->raid_disks
- 1));
5243 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
5244 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
5245 info
->layout
, info
->chunk_size
,
5247 /* round array size down to closest MB */
5248 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
5250 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
5251 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
5252 dev
->status
= (DEV_READ_COALESCING
| DEV_WRITE_COALESCING
);
5254 vol
->migr_state
= 0;
5255 set_migr_type(dev
, MIGR_INIT
);
5256 vol
->dirty
= !info
->state
;
5257 vol
->curr_migr_unit
= 0;
5258 map
= get_imsm_map(dev
, MAP_0
);
5259 set_pba_of_lba0(map
, super
->create_offset
);
5260 set_blocks_per_member(map
, info_to_blocks_per_member(info
, size
));
5261 map
->blocks_per_strip
= __cpu_to_le16(info_to_blocks_per_strip(info
));
5262 map
->failed_disk_num
= ~0;
5263 if (info
->level
> 0)
5264 map
->map_state
= (info
->state
? IMSM_T_STATE_NORMAL
5265 : IMSM_T_STATE_UNINITIALIZED
);
5267 map
->map_state
= info
->failed_disks
? IMSM_T_STATE_FAILED
:
5268 IMSM_T_STATE_NORMAL
;
5271 if (info
->level
== 1 && info
->raid_disks
> 2) {
5274 pr_err("imsm does not support more than 2 disksin a raid1 volume\n");
5278 map
->raid_level
= info
->level
;
5279 if (info
->level
== 10) {
5280 map
->raid_level
= 1;
5281 map
->num_domains
= info
->raid_disks
/ 2;
5282 } else if (info
->level
== 1)
5283 map
->num_domains
= info
->raid_disks
;
5285 map
->num_domains
= 1;
5287 /* info->size is only int so use the 'size' parameter instead */
5288 num_data_stripes
= (size
* 2) / info_to_blocks_per_strip(info
);
5289 num_data_stripes
/= map
->num_domains
;
5290 set_num_data_stripes(map
, num_data_stripes
);
5292 map
->num_members
= info
->raid_disks
;
5293 for (i
= 0; i
< map
->num_members
; i
++) {
5294 /* initialized in add_to_super */
5295 set_imsm_ord_tbl_ent(map
, i
, IMSM_ORD_REBUILD
);
5297 mpb
->num_raid_devs
++;
5300 dv
->index
= super
->current_vol
;
5301 dv
->next
= super
->devlist
;
5302 super
->devlist
= dv
;
5304 imsm_update_version_info(super
);
5309 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
5310 unsigned long long size
, char *name
,
5311 char *homehost
, int *uuid
,
5312 unsigned long long data_offset
)
5314 /* This is primarily called by Create when creating a new array.
5315 * We will then get add_to_super called for each component, and then
5316 * write_init_super called to write it out to each device.
5317 * For IMSM, Create can create on fresh devices or on a pre-existing
5319 * To create on a pre-existing array a different method will be called.
5320 * This one is just for fresh drives.
5322 struct intel_super
*super
;
5323 struct imsm_super
*mpb
;
5327 if (data_offset
!= INVALID_SECTORS
) {
5328 pr_err("data-offset not supported by imsm\n");
5333 return init_super_imsm_volume(st
, info
, size
, name
, homehost
, uuid
,
5337 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
5339 mpb_size
= MAX_SECTOR_SIZE
;
5341 super
= alloc_super();
5343 posix_memalign(&super
->buf
, MAX_SECTOR_SIZE
, mpb_size
) != 0) {
5348 pr_err("could not allocate superblock\n");
5351 if (posix_memalign(&super
->migr_rec_buf
, MAX_SECTOR_SIZE
,
5352 MIGR_REC_BUF_SECTORS
*MAX_SECTOR_SIZE
) != 0) {
5353 pr_err("could not allocate migr_rec buffer\n");
5358 memset(super
->buf
, 0, mpb_size
);
5360 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
5364 /* zeroing superblock */
5368 mpb
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
5370 version
= (char *) mpb
->sig
;
5371 strcpy(version
, MPB_SIGNATURE
);
5372 version
+= strlen(MPB_SIGNATURE
);
5373 strcpy(version
, MPB_VERSION_RAID0
);
5379 static int add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
5380 int fd
, char *devname
)
5382 struct intel_super
*super
= st
->sb
;
5383 struct imsm_super
*mpb
= super
->anchor
;
5384 struct imsm_disk
*_disk
;
5385 struct imsm_dev
*dev
;
5386 struct imsm_map
*map
;
5390 dev
= get_imsm_dev(super
, super
->current_vol
);
5391 map
= get_imsm_map(dev
, MAP_0
);
5393 if (! (dk
->state
& (1<<MD_DISK_SYNC
))) {
5394 pr_err("%s: Cannot add spare devices to IMSM volume\n",
5400 /* we're doing autolayout so grab the pre-marked (in
5401 * validate_geometry) raid_disk
5403 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
5404 if (dl
->raiddisk
== dk
->raid_disk
)
5407 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
5408 if (dl
->major
== dk
->major
&&
5409 dl
->minor
== dk
->minor
)
5414 pr_err("%s is not a member of the same container\n", devname
);
5418 /* add a pristine spare to the metadata */
5419 if (dl
->index
< 0) {
5420 dl
->index
= super
->anchor
->num_disks
;
5421 super
->anchor
->num_disks
++;
5423 /* Check the device has not already been added */
5424 slot
= get_imsm_disk_slot(map
, dl
->index
);
5426 (get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
) & IMSM_ORD_REBUILD
) == 0) {
5427 pr_err("%s has been included in this array twice\n",
5431 set_imsm_ord_tbl_ent(map
, dk
->raid_disk
, dl
->index
);
5432 dl
->disk
.status
= CONFIGURED_DISK
;
5434 /* update size of 'missing' disks to be at least as large as the
5435 * largest acitve member (we only have dummy missing disks when
5436 * creating the first volume)
5438 if (super
->current_vol
== 0) {
5439 for (df
= super
->missing
; df
; df
= df
->next
) {
5440 if (total_blocks(&dl
->disk
) > total_blocks(&df
->disk
))
5441 set_total_blocks(&df
->disk
, total_blocks(&dl
->disk
));
5442 _disk
= __get_imsm_disk(mpb
, df
->index
);
5447 /* refresh unset/failed slots to point to valid 'missing' entries */
5448 for (df
= super
->missing
; df
; df
= df
->next
)
5449 for (slot
= 0; slot
< mpb
->num_disks
; slot
++) {
5450 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
5452 if ((ord
& IMSM_ORD_REBUILD
) == 0)
5454 set_imsm_ord_tbl_ent(map
, slot
, df
->index
| IMSM_ORD_REBUILD
);
5455 if (is_gen_migration(dev
)) {
5456 struct imsm_map
*map2
= get_imsm_map(dev
,
5458 int slot2
= get_imsm_disk_slot(map2
, df
->index
);
5459 if (slot2
< map2
->num_members
&& slot2
>= 0) {
5460 __u32 ord2
= get_imsm_ord_tbl_ent(dev
,
5463 if ((unsigned)df
->index
==
5465 set_imsm_ord_tbl_ent(map2
,
5471 dprintf("set slot:%d to missing disk:%d\n", slot
, df
->index
);
5475 /* if we are creating the first raid device update the family number */
5476 if (super
->current_vol
== 0) {
5478 struct imsm_dev
*_dev
= __get_imsm_dev(mpb
, 0);
5480 _disk
= __get_imsm_disk(mpb
, dl
->index
);
5481 if (!_dev
|| !_disk
) {
5482 pr_err("BUG mpb setup error\n");
5488 sum
+= __gen_imsm_checksum(mpb
);
5489 mpb
->family_num
= __cpu_to_le32(sum
);
5490 mpb
->orig_family_num
= mpb
->family_num
;
5492 super
->current_disk
= dl
;
5497 * Function marks disk as spare and restores disk serial
5498 * in case it was previously marked as failed by takeover operation
5500 * -1 : critical error
5501 * 0 : disk is marked as spare but serial is not set
5504 int mark_spare(struct dl
*disk
)
5506 __u8 serial
[MAX_RAID_SERIAL_LEN
];
5513 if (!imsm_read_serial(disk
->fd
, NULL
, serial
)) {
5514 /* Restore disk serial number, because takeover marks disk
5515 * as failed and adds to serial ':0' before it becomes
5518 serialcpy(disk
->serial
, serial
);
5519 serialcpy(disk
->disk
.serial
, serial
);
5522 disk
->disk
.status
= SPARE_DISK
;
5528 static int add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
5529 int fd
, char *devname
,
5530 unsigned long long data_offset
)
5532 struct intel_super
*super
= st
->sb
;
5534 unsigned long long size
;
5535 unsigned int member_sector_size
;
5540 /* If we are on an RAID enabled platform check that the disk is
5541 * attached to the raid controller.
5542 * We do not need to test disks attachment for container based additions,
5543 * they shall be already tested when container was created/assembled.
5545 rv
= find_intel_hba_capability(fd
, super
, devname
);
5546 /* no orom/efi or non-intel hba of the disk */
5548 dprintf("capability: %p fd: %d ret: %d\n",
5549 super
->orom
, fd
, rv
);
5553 if (super
->current_vol
>= 0)
5554 return add_to_super_imsm_volume(st
, dk
, fd
, devname
);
5557 dd
= xcalloc(sizeof(*dd
), 1);
5558 dd
->major
= major(stb
.st_rdev
);
5559 dd
->minor
= minor(stb
.st_rdev
);
5560 dd
->devname
= devname
? xstrdup(devname
) : NULL
;
5563 dd
->action
= DISK_ADD
;
5564 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
5566 pr_err("failed to retrieve scsi serial, aborting\n");
5572 if (super
->hba
&& ((super
->hba
->type
== SYS_DEV_NVME
) ||
5573 (super
->hba
->type
== SYS_DEV_VMD
))) {
5575 char *devpath
= diskfd_to_devpath(fd
);
5576 char controller_path
[PATH_MAX
];
5579 pr_err("failed to get devpath, aborting\n");
5586 snprintf(controller_path
, PATH_MAX
-1, "%s/device", devpath
);
5589 if (devpath_to_vendor(controller_path
) == 0x8086) {
5591 * If Intel's NVMe drive has serial ended with
5592 * "-A","-B","-1" or "-2" it means that this is "x8"
5593 * device (double drive on single PCIe card).
5594 * User should be warned about potential data loss.
5596 for (i
= MAX_RAID_SERIAL_LEN
-1; i
> 0; i
--) {
5597 /* Skip empty character at the end */
5598 if (dd
->serial
[i
] == 0)
5601 if (((dd
->serial
[i
] == 'A') ||
5602 (dd
->serial
[i
] == 'B') ||
5603 (dd
->serial
[i
] == '1') ||
5604 (dd
->serial
[i
] == '2')) &&
5605 (dd
->serial
[i
-1] == '-'))
5606 pr_err("\tThe action you are about to take may put your data at risk.\n"
5607 "\tPlease note that x8 devices may consist of two separate x4 devices "
5608 "located on a single PCIe port.\n"
5609 "\tRAID 0 is the only supported configuration for this type of x8 device.\n");
5612 } else if (super
->hba
->type
== SYS_DEV_VMD
&& super
->orom
&&
5613 !imsm_orom_has_tpv_support(super
->orom
)) {
5614 pr_err("\tPlatform configuration does not support non-Intel NVMe drives.\n"
5615 "\tPlease refer to Intel(R) RSTe user guide.\n");
5622 get_dev_size(fd
, NULL
, &size
);
5623 get_dev_sector_size(fd
, NULL
, &member_sector_size
);
5625 if (super
->sector_size
== 0) {
5626 /* this a first device, so sector_size is not set yet */
5627 super
->sector_size
= member_sector_size
;
5628 } else if (member_sector_size
!= super
->sector_size
) {
5629 pr_err("Mixing between different sector size is forbidden, aborting...\n");
5636 /* clear migr_rec when adding disk to container */
5637 memset(super
->migr_rec_buf
, 0, MIGR_REC_BUF_SECTORS
*super
->sector_size
);
5638 if (lseek64(fd
, size
- MIGR_REC_SECTOR_POSITION
*super
->sector_size
,
5640 if (write(fd
, super
->migr_rec_buf
,
5641 MIGR_REC_BUF_SECTORS
*super
->sector_size
) !=
5642 MIGR_REC_BUF_SECTORS
*super
->sector_size
)
5643 perror("Write migr_rec failed");
5647 serialcpy(dd
->disk
.serial
, dd
->serial
);
5648 set_total_blocks(&dd
->disk
, size
);
5649 if (__le32_to_cpu(dd
->disk
.total_blocks_hi
) > 0) {
5650 struct imsm_super
*mpb
= super
->anchor
;
5651 mpb
->attributes
|= MPB_ATTRIB_2TB_DISK
;
5654 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
5655 dd
->disk
.scsi_id
= __cpu_to_le32(id
);
5657 dd
->disk
.scsi_id
= __cpu_to_le32(0);
5659 if (st
->update_tail
) {
5660 dd
->next
= super
->disk_mgmt_list
;
5661 super
->disk_mgmt_list
= dd
;
5663 dd
->next
= super
->disks
;
5665 super
->updates_pending
++;
5671 static int remove_from_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
)
5673 struct intel_super
*super
= st
->sb
;
5676 /* remove from super works only in mdmon - for communication
5677 * manager - monitor. Check if communication memory buffer
5680 if (!st
->update_tail
) {
5681 pr_err("shall be used in mdmon context only\n");
5684 dd
= xcalloc(1, sizeof(*dd
));
5685 dd
->major
= dk
->major
;
5686 dd
->minor
= dk
->minor
;
5689 dd
->action
= DISK_REMOVE
;
5691 dd
->next
= super
->disk_mgmt_list
;
5692 super
->disk_mgmt_list
= dd
;
5697 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
);
5700 char buf
[MAX_SECTOR_SIZE
];
5701 struct imsm_super anchor
;
5702 } spare_record
__attribute__ ((aligned(MAX_SECTOR_SIZE
)));
5704 /* spare records have their own family number and do not have any defined raid
5707 static int write_super_imsm_spares(struct intel_super
*super
, int doclose
)
5709 struct imsm_super
*mpb
= super
->anchor
;
5710 struct imsm_super
*spare
= &spare_record
.anchor
;
5714 spare
->mpb_size
= __cpu_to_le32(sizeof(struct imsm_super
));
5715 spare
->generation_num
= __cpu_to_le32(1UL);
5716 spare
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
5717 spare
->num_disks
= 1;
5718 spare
->num_raid_devs
= 0;
5719 spare
->cache_size
= mpb
->cache_size
;
5720 spare
->pwr_cycle_count
= __cpu_to_le32(1);
5722 snprintf((char *) spare
->sig
, MAX_SIGNATURE_LENGTH
,
5723 MPB_SIGNATURE MPB_VERSION_RAID0
);
5725 for (d
= super
->disks
; d
; d
= d
->next
) {
5729 spare
->disk
[0] = d
->disk
;
5730 if (__le32_to_cpu(d
->disk
.total_blocks_hi
) > 0)
5731 spare
->attributes
|= MPB_ATTRIB_2TB_DISK
;
5733 if (super
->sector_size
== 4096)
5734 convert_to_4k_imsm_disk(&spare
->disk
[0]);
5736 sum
= __gen_imsm_checksum(spare
);
5737 spare
->family_num
= __cpu_to_le32(sum
);
5738 spare
->orig_family_num
= 0;
5739 sum
= __gen_imsm_checksum(spare
);
5740 spare
->check_sum
= __cpu_to_le32(sum
);
5742 if (store_imsm_mpb(d
->fd
, spare
)) {
5743 pr_err("failed for device %d:%d %s\n",
5744 d
->major
, d
->minor
, strerror(errno
));
5756 static int write_super_imsm(struct supertype
*st
, int doclose
)
5758 struct intel_super
*super
= st
->sb
;
5759 unsigned int sector_size
= super
->sector_size
;
5760 struct imsm_super
*mpb
= super
->anchor
;
5766 __u32 mpb_size
= sizeof(struct imsm_super
) - sizeof(struct imsm_disk
);
5768 int clear_migration_record
= 1;
5771 /* 'generation' is incremented everytime the metadata is written */
5772 generation
= __le32_to_cpu(mpb
->generation_num
);
5774 mpb
->generation_num
= __cpu_to_le32(generation
);
5776 /* fix up cases where previous mdadm releases failed to set
5779 if (mpb
->orig_family_num
== 0)
5780 mpb
->orig_family_num
= mpb
->family_num
;
5782 for (d
= super
->disks
; d
; d
= d
->next
) {
5786 mpb
->disk
[d
->index
] = d
->disk
;
5790 for (d
= super
->missing
; d
; d
= d
->next
) {
5791 mpb
->disk
[d
->index
] = d
->disk
;
5794 mpb
->num_disks
= num_disks
;
5795 mpb_size
+= sizeof(struct imsm_disk
) * mpb
->num_disks
;
5797 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5798 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
5799 struct imsm_dev
*dev2
= get_imsm_dev(super
, i
);
5801 imsm_copy_dev(dev
, dev2
);
5802 mpb_size
+= sizeof_imsm_dev(dev
, 0);
5804 if (is_gen_migration(dev2
))
5805 clear_migration_record
= 0;
5808 bbm_log_size
= get_imsm_bbm_log_size(super
->bbm_log
);
5811 memcpy((void *)mpb
+ mpb_size
, super
->bbm_log
, bbm_log_size
);
5812 mpb
->attributes
|= MPB_ATTRIB_BBM
;
5814 mpb
->attributes
&= ~MPB_ATTRIB_BBM
;
5816 super
->anchor
->bbm_log_size
= __cpu_to_le32(bbm_log_size
);
5817 mpb_size
+= bbm_log_size
;
5818 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
5821 assert(super
->len
== 0 || mpb_size
<= super
->len
);
5824 /* recalculate checksum */
5825 sum
= __gen_imsm_checksum(mpb
);
5826 mpb
->check_sum
= __cpu_to_le32(sum
);
5828 if (super
->clean_migration_record_by_mdmon
) {
5829 clear_migration_record
= 1;
5830 super
->clean_migration_record_by_mdmon
= 0;
5832 if (clear_migration_record
)
5833 memset(super
->migr_rec_buf
, 0,
5834 MIGR_REC_BUF_SECTORS
*sector_size
);
5836 if (sector_size
== 4096)
5837 convert_to_4k(super
);
5839 /* write the mpb for disks that compose raid devices */
5840 for (d
= super
->disks
; d
; d
= d
->next
) {
5841 if (d
->index
< 0 || is_failed(&d
->disk
))
5844 if (clear_migration_record
) {
5845 unsigned long long dsize
;
5847 get_dev_size(d
->fd
, NULL
, &dsize
);
5848 if (lseek64(d
->fd
, dsize
- sector_size
,
5850 if (write(d
->fd
, super
->migr_rec_buf
,
5851 MIGR_REC_BUF_SECTORS
*sector_size
) !=
5852 MIGR_REC_BUF_SECTORS
*sector_size
)
5853 perror("Write migr_rec failed");
5857 if (store_imsm_mpb(d
->fd
, mpb
))
5859 "failed for device %d:%d (fd: %d)%s\n",
5861 d
->fd
, strerror(errno
));
5870 return write_super_imsm_spares(super
, doclose
);
5875 static int create_array(struct supertype
*st
, int dev_idx
)
5878 struct imsm_update_create_array
*u
;
5879 struct intel_super
*super
= st
->sb
;
5880 struct imsm_dev
*dev
= get_imsm_dev(super
, dev_idx
);
5881 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
5882 struct disk_info
*inf
;
5883 struct imsm_disk
*disk
;
5886 len
= sizeof(*u
) - sizeof(*dev
) + sizeof_imsm_dev(dev
, 0) +
5887 sizeof(*inf
) * map
->num_members
;
5889 u
->type
= update_create_array
;
5890 u
->dev_idx
= dev_idx
;
5891 imsm_copy_dev(&u
->dev
, dev
);
5892 inf
= get_disk_info(u
);
5893 for (i
= 0; i
< map
->num_members
; i
++) {
5894 int idx
= get_imsm_disk_idx(dev
, i
, MAP_X
);
5896 disk
= get_imsm_disk(super
, idx
);
5898 disk
= get_imsm_missing(super
, idx
);
5899 serialcpy(inf
[i
].serial
, disk
->serial
);
5901 append_metadata_update(st
, u
, len
);
5906 static int mgmt_disk(struct supertype
*st
)
5908 struct intel_super
*super
= st
->sb
;
5910 struct imsm_update_add_remove_disk
*u
;
5912 if (!super
->disk_mgmt_list
)
5917 u
->type
= update_add_remove_disk
;
5918 append_metadata_update(st
, u
, len
);
5923 static int write_init_super_imsm(struct supertype
*st
)
5925 struct intel_super
*super
= st
->sb
;
5926 int current_vol
= super
->current_vol
;
5928 /* we are done with current_vol reset it to point st at the container */
5929 super
->current_vol
= -1;
5931 if (st
->update_tail
) {
5932 /* queue the recently created array / added disk
5933 * as a metadata update */
5936 /* determine if we are creating a volume or adding a disk */
5937 if (current_vol
< 0) {
5938 /* in the mgmt (add/remove) disk case we are running
5939 * in mdmon context, so don't close fd's
5941 return mgmt_disk(st
);
5943 rv
= create_array(st
, current_vol
);
5948 for (d
= super
->disks
; d
; d
= d
->next
)
5949 Kill(d
->devname
, NULL
, 0, -1, 1);
5950 return write_super_imsm(st
, 1);
5955 static int store_super_imsm(struct supertype
*st
, int fd
)
5957 struct intel_super
*super
= st
->sb
;
5958 struct imsm_super
*mpb
= super
? super
->anchor
: NULL
;
5964 if (super
->sector_size
== 4096)
5965 convert_to_4k(super
);
5966 return store_imsm_mpb(fd
, mpb
);
5973 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
5974 int layout
, int raiddisks
, int chunk
,
5975 unsigned long long size
,
5976 unsigned long long data_offset
,
5978 unsigned long long *freesize
,
5982 unsigned long long ldsize
;
5983 struct intel_super
*super
;
5986 if (level
!= LEVEL_CONTAINER
)
5991 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
5994 pr_err("imsm: Cannot open %s: %s\n",
5995 dev
, strerror(errno
));
5998 if (!get_dev_size(fd
, dev
, &ldsize
)) {
6003 /* capabilities retrieve could be possible
6004 * note that there is no fd for the disks in array.
6006 super
= alloc_super();
6011 if (!get_dev_sector_size(fd
, NULL
, &super
->sector_size
)) {
6017 rv
= find_intel_hba_capability(fd
, super
, verbose
> 0 ? dev
: NULL
);
6021 fd2devname(fd
, str
);
6022 dprintf("fd: %d %s orom: %p rv: %d raiddisk: %d\n",
6023 fd
, str
, super
->orom
, rv
, raiddisks
);
6025 /* no orom/efi or non-intel hba of the disk */
6032 if (raiddisks
> super
->orom
->tds
) {
6034 pr_err("%d exceeds maximum number of platform supported disks: %d\n",
6035 raiddisks
, super
->orom
->tds
);
6039 if ((super
->orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
) == 0 &&
6040 (ldsize
>> 9) >> 32 > 0) {
6042 pr_err("%s exceeds maximum platform supported size\n", dev
);
6048 *freesize
= avail_size_imsm(st
, ldsize
>> 9, data_offset
);
6054 static unsigned long long find_size(struct extent
*e
, int *idx
, int num_extents
)
6056 const unsigned long long base_start
= e
[*idx
].start
;
6057 unsigned long long end
= base_start
+ e
[*idx
].size
;
6060 if (base_start
== end
)
6064 for (i
= *idx
; i
< num_extents
; i
++) {
6065 /* extend overlapping extents */
6066 if (e
[i
].start
>= base_start
&&
6067 e
[i
].start
<= end
) {
6070 if (e
[i
].start
+ e
[i
].size
> end
)
6071 end
= e
[i
].start
+ e
[i
].size
;
6072 } else if (e
[i
].start
> end
) {
6078 return end
- base_start
;
6081 static unsigned long long merge_extents(struct intel_super
*super
, int sum_extents
)
6083 /* build a composite disk with all known extents and generate a new
6084 * 'maxsize' given the "all disks in an array must share a common start
6085 * offset" constraint
6087 struct extent
*e
= xcalloc(sum_extents
, sizeof(*e
));
6091 unsigned long long pos
;
6092 unsigned long long start
= 0;
6093 unsigned long long maxsize
;
6094 unsigned long reserve
;
6096 /* coalesce and sort all extents. also, check to see if we need to
6097 * reserve space between member arrays
6100 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6103 for (i
= 0; i
< dl
->extent_cnt
; i
++)
6106 qsort(e
, sum_extents
, sizeof(*e
), cmp_extent
);
6111 while (i
< sum_extents
) {
6112 e
[j
].start
= e
[i
].start
;
6113 e
[j
].size
= find_size(e
, &i
, sum_extents
);
6115 if (e
[j
-1].size
== 0)
6124 unsigned long long esize
;
6126 esize
= e
[i
].start
- pos
;
6127 if (esize
>= maxsize
) {
6132 pos
= e
[i
].start
+ e
[i
].size
;
6134 } while (e
[i
-1].size
);
6140 /* FIXME assumes volume at offset 0 is the first volume in a
6143 if (start_extent
> 0)
6144 reserve
= IMSM_RESERVED_SECTORS
; /* gap between raid regions */
6148 if (maxsize
< reserve
)
6151 super
->create_offset
= ~((unsigned long long) 0);
6152 if (start
+ reserve
> super
->create_offset
)
6153 return 0; /* start overflows create_offset */
6154 super
->create_offset
= start
+ reserve
;
6156 return maxsize
- reserve
;
6159 static int is_raid_level_supported(const struct imsm_orom
*orom
, int level
, int raiddisks
)
6161 if (level
< 0 || level
== 6 || level
== 4)
6164 /* if we have an orom prevent invalid raid levels */
6167 case 0: return imsm_orom_has_raid0(orom
);
6170 return imsm_orom_has_raid1e(orom
);
6171 return imsm_orom_has_raid1(orom
) && raiddisks
== 2;
6172 case 10: return imsm_orom_has_raid10(orom
) && raiddisks
== 4;
6173 case 5: return imsm_orom_has_raid5(orom
) && raiddisks
> 2;
6176 return 1; /* not on an Intel RAID platform so anything goes */
6182 active_arrays_by_format(char *name
, char* hba
, struct md_list
**devlist
,
6183 int dpa
, int verbose
)
6185 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
6186 struct mdstat_ent
*memb
;
6192 for (memb
= mdstat
; memb
; memb
= memb
->next
) {
6193 if (memb
->metadata_version
&&
6194 (strncmp(memb
->metadata_version
, "external:", 9) == 0) &&
6195 (strcmp(&memb
->metadata_version
[9], name
) == 0) &&
6196 !is_subarray(memb
->metadata_version
+9) &&
6198 struct dev_member
*dev
= memb
->members
;
6200 while(dev
&& (fd
< 0)) {
6201 char *path
= xmalloc(strlen(dev
->name
) + strlen("/dev/") + 1);
6202 num
= sprintf(path
, "%s%s", "/dev/", dev
->name
);
6204 fd
= open(path
, O_RDONLY
, 0);
6205 if (num
<= 0 || fd
< 0) {
6206 pr_vrb("Cannot open %s: %s\n",
6207 dev
->name
, strerror(errno
));
6213 if (fd
>= 0 && disk_attached_to_hba(fd
, hba
)) {
6214 struct mdstat_ent
*vol
;
6215 for (vol
= mdstat
; vol
; vol
= vol
->next
) {
6216 if (vol
->active
> 0 &&
6217 vol
->metadata_version
&&
6218 is_container_member(vol
, memb
->devnm
)) {
6223 if (*devlist
&& (found
< dpa
)) {
6224 dv
= xcalloc(1, sizeof(*dv
));
6225 dv
->devname
= xmalloc(strlen(memb
->devnm
) + strlen("/dev/") + 1);
6226 sprintf(dv
->devname
, "%s%s", "/dev/", memb
->devnm
);
6229 dv
->next
= *devlist
;
6237 free_mdstat(mdstat
);
6242 static struct md_list
*
6243 get_loop_devices(void)
6246 struct md_list
*devlist
= NULL
;
6249 for(i
= 0; i
< 12; i
++) {
6250 dv
= xcalloc(1, sizeof(*dv
));
6251 dv
->devname
= xmalloc(40);
6252 sprintf(dv
->devname
, "/dev/loop%d", i
);
6260 static struct md_list
*
6261 get_devices(const char *hba_path
)
6263 struct md_list
*devlist
= NULL
;
6270 devlist
= get_loop_devices();
6273 /* scroll through /sys/dev/block looking for devices attached to
6276 dir
= opendir("/sys/dev/block");
6277 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
6282 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
6284 path
= devt_to_devpath(makedev(major
, minor
));
6287 if (!path_attached_to_hba(path
, hba_path
)) {
6294 fd
= dev_open(ent
->d_name
, O_RDONLY
);
6296 fd2devname(fd
, buf
);
6299 pr_err("cannot open device: %s\n",
6304 dv
= xcalloc(1, sizeof(*dv
));
6305 dv
->devname
= xstrdup(buf
);
6312 devlist
= devlist
->next
;
6322 count_volumes_list(struct md_list
*devlist
, char *homehost
,
6323 int verbose
, int *found
)
6325 struct md_list
*tmpdev
;
6327 struct supertype
*st
;
6329 /* first walk the list of devices to find a consistent set
6330 * that match the criterea, if that is possible.
6331 * We flag the ones we like with 'used'.
6334 st
= match_metadata_desc_imsm("imsm");
6336 pr_vrb("cannot allocate memory for imsm supertype\n");
6340 for (tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
6341 char *devname
= tmpdev
->devname
;
6343 struct supertype
*tst
;
6345 if (tmpdev
->used
> 1)
6347 tst
= dup_super(st
);
6349 pr_vrb("cannot allocate memory for imsm supertype\n");
6352 tmpdev
->container
= 0;
6353 dfd
= dev_open(devname
, O_RDONLY
|O_EXCL
);
6355 dprintf("cannot open device %s: %s\n",
6356 devname
, strerror(errno
));
6358 } else if (fstat(dfd
, &stb
)< 0) {
6360 dprintf("fstat failed for %s: %s\n",
6361 devname
, strerror(errno
));
6363 } else if ((stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
6364 dprintf("%s is not a block device.\n",
6367 } else if (must_be_container(dfd
)) {
6368 struct supertype
*cst
;
6369 cst
= super_by_fd(dfd
, NULL
);
6371 dprintf("cannot recognize container type %s\n",
6374 } else if (tst
->ss
!= st
->ss
) {
6375 dprintf("non-imsm container - ignore it: %s\n",
6378 } else if (!tst
->ss
->load_container
||
6379 tst
->ss
->load_container(tst
, dfd
, NULL
))
6382 tmpdev
->container
= 1;
6385 cst
->ss
->free_super(cst
);
6387 tmpdev
->st_rdev
= stb
.st_rdev
;
6388 if (tst
->ss
->load_super(tst
,dfd
, NULL
)) {
6389 dprintf("no RAID superblock on %s\n",
6392 } else if (tst
->ss
->compare_super
== NULL
) {
6393 dprintf("Cannot assemble %s metadata on %s\n",
6394 tst
->ss
->name
, devname
);
6400 if (tmpdev
->used
== 2 || tmpdev
->used
== 4) {
6401 /* Ignore unrecognised devices during auto-assembly */
6406 tst
->ss
->getinfo_super(tst
, &info
, NULL
);
6408 if (st
->minor_version
== -1)
6409 st
->minor_version
= tst
->minor_version
;
6411 if (memcmp(info
.uuid
, uuid_zero
,
6412 sizeof(int[4])) == 0) {
6413 /* this is a floating spare. It cannot define
6414 * an array unless there are no more arrays of
6415 * this type to be found. It can be included
6416 * in an array of this type though.
6422 if (st
->ss
!= tst
->ss
||
6423 st
->minor_version
!= tst
->minor_version
||
6424 st
->ss
->compare_super(st
, tst
) != 0) {
6425 /* Some mismatch. If exactly one array matches this host,
6426 * we can resolve on that one.
6427 * Or, if we are auto assembling, we just ignore the second
6430 dprintf("superblock on %s doesn't match others - assembly aborted\n",
6436 dprintf("found: devname: %s\n", devname
);
6440 tst
->ss
->free_super(tst
);
6444 if ((err
= load_super_imsm_all(st
, -1, &st
->sb
, NULL
, devlist
, 0)) == 0) {
6445 struct mdinfo
*iter
, *head
= st
->ss
->container_content(st
, NULL
);
6446 for (iter
= head
; iter
; iter
= iter
->next
) {
6447 dprintf("content->text_version: %s vol\n",
6448 iter
->text_version
);
6449 if (iter
->array
.state
& (1<<MD_SB_BLOCK_VOLUME
)) {
6450 /* do not assemble arrays with unsupported
6452 dprintf("Cannot activate member %s.\n",
6453 iter
->text_version
);
6460 dprintf("No valid super block on device list: err: %d %p\n",
6464 dprintf("no more devices to examine\n");
6467 for (tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
6468 if (tmpdev
->used
== 1 && tmpdev
->found
) {
6470 if (count
< tmpdev
->found
)
6473 count
-= tmpdev
->found
;
6476 if (tmpdev
->used
== 1)
6481 st
->ss
->free_super(st
);
6486 count_volumes(struct intel_hba
*hba
, int dpa
, int verbose
)
6488 struct sys_dev
*idev
, *intel_devices
= find_intel_devices();
6490 const struct orom_entry
*entry
;
6491 struct devid_list
*dv
, *devid_list
;
6493 if (!hba
|| !hba
->path
)
6496 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
6497 if (strstr(idev
->path
, hba
->path
))
6501 if (!idev
|| !idev
->dev_id
)
6504 entry
= get_orom_entry_by_device_id(idev
->dev_id
);
6506 if (!entry
|| !entry
->devid_list
)
6509 devid_list
= entry
->devid_list
;
6510 for (dv
= devid_list
; dv
; dv
= dv
->next
) {
6511 struct md_list
*devlist
;
6512 struct sys_dev
*device
= device_by_id(dv
->devid
);
6517 hba_path
= device
->path
;
6521 devlist
= get_devices(hba_path
);
6522 /* if no intel devices return zero volumes */
6523 if (devlist
== NULL
)
6526 count
+= active_arrays_by_format("imsm", hba_path
, &devlist
, dpa
, verbose
);
6527 dprintf("path: %s active arrays: %d\n", hba_path
, count
);
6528 if (devlist
== NULL
)
6532 count
+= count_volumes_list(devlist
,
6536 dprintf("found %d count: %d\n", found
, count
);
6539 dprintf("path: %s total number of volumes: %d\n", hba_path
, count
);
6542 struct md_list
*dv
= devlist
;
6543 devlist
= devlist
->next
;
6551 static int imsm_default_chunk(const struct imsm_orom
*orom
)
6553 /* up to 512 if the plaform supports it, otherwise the platform max.
6554 * 128 if no platform detected
6556 int fs
= max(7, orom
? fls(orom
->sss
) : 0);
6558 return min(512, (1 << fs
));
6562 validate_geometry_imsm_orom(struct intel_super
*super
, int level
, int layout
,
6563 int raiddisks
, int *chunk
, unsigned long long size
, int verbose
)
6565 /* check/set platform and metadata limits/defaults */
6566 if (super
->orom
&& raiddisks
> super
->orom
->dpa
) {
6567 pr_vrb("platform supports a maximum of %d disks per array\n",
6572 /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */
6573 if (!is_raid_level_supported(super
->orom
, level
, raiddisks
)) {
6574 pr_vrb("platform does not support raid%d with %d disk%s\n",
6575 level
, raiddisks
, raiddisks
> 1 ? "s" : "");
6579 if (*chunk
== 0 || *chunk
== UnSet
)
6580 *chunk
= imsm_default_chunk(super
->orom
);
6582 if (super
->orom
&& !imsm_orom_has_chunk(super
->orom
, *chunk
)) {
6583 pr_vrb("platform does not support a chunk size of: %d\n", *chunk
);
6587 if (layout
!= imsm_level_to_layout(level
)) {
6589 pr_vrb("imsm raid 5 only supports the left-asymmetric layout\n");
6590 else if (level
== 10)
6591 pr_vrb("imsm raid 10 only supports the n2 layout\n");
6593 pr_vrb("imsm unknown layout %#x for this raid level %d\n",
6598 if (super
->orom
&& (super
->orom
->attr
& IMSM_OROM_ATTR_2TB
) == 0 &&
6599 (calc_array_size(level
, raiddisks
, layout
, *chunk
, size
) >> 32) > 0) {
6600 pr_vrb("platform does not support a volume size over 2TB\n");
6607 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
6608 * FIX ME add ahci details
6610 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
6611 int layout
, int raiddisks
, int *chunk
,
6612 unsigned long long size
,
6613 unsigned long long data_offset
,
6615 unsigned long long *freesize
,
6619 struct intel_super
*super
= st
->sb
;
6620 struct imsm_super
*mpb
;
6622 unsigned long long pos
= 0;
6623 unsigned long long maxsize
;
6627 /* We must have the container info already read in. */
6631 mpb
= super
->anchor
;
6633 if (!validate_geometry_imsm_orom(super
, level
, layout
, raiddisks
, chunk
, size
, verbose
)) {
6634 pr_err("RAID gemetry validation failed. Cannot proceed with the action(s).\n");
6638 /* General test: make sure there is space for
6639 * 'raiddisks' device extents of size 'size' at a given
6642 unsigned long long minsize
= size
;
6643 unsigned long long start_offset
= MaxSector
;
6646 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
6647 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6652 e
= get_extents(super
, dl
);
6655 unsigned long long esize
;
6656 esize
= e
[i
].start
- pos
;
6657 if (esize
>= minsize
)
6659 if (found
&& start_offset
== MaxSector
) {
6662 } else if (found
&& pos
!= start_offset
) {
6666 pos
= e
[i
].start
+ e
[i
].size
;
6668 } while (e
[i
-1].size
);
6673 if (dcnt
< raiddisks
) {
6675 pr_err("imsm: Not enough devices with space for this array (%d < %d)\n",
6682 /* This device must be a member of the set */
6683 if (stat(dev
, &stb
) < 0)
6685 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
6687 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6688 if (dl
->major
== (int)major(stb
.st_rdev
) &&
6689 dl
->minor
== (int)minor(stb
.st_rdev
))
6694 pr_err("%s is not in the same imsm set\n", dev
);
6696 } else if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
) {
6697 /* If a volume is present then the current creation attempt
6698 * cannot incorporate new spares because the orom may not
6699 * understand this configuration (all member disks must be
6700 * members of each array in the container).
6702 pr_err("%s is a spare and a volume is already defined for this container\n", dev
);
6703 pr_err("The option-rom requires all member disks to be a member of all volumes\n");
6705 } else if (super
->orom
&& mpb
->num_raid_devs
> 0 &&
6706 mpb
->num_disks
!= raiddisks
) {
6707 pr_err("The option-rom requires all member disks to be a member of all volumes\n");
6711 /* retrieve the largest free space block */
6712 e
= get_extents(super
, dl
);
6717 unsigned long long esize
;
6719 esize
= e
[i
].start
- pos
;
6720 if (esize
>= maxsize
)
6722 pos
= e
[i
].start
+ e
[i
].size
;
6724 } while (e
[i
-1].size
);
6729 pr_err("unable to determine free space for: %s\n",
6733 if (maxsize
< size
) {
6735 pr_err("%s not enough space (%llu < %llu)\n",
6736 dev
, maxsize
, size
);
6740 /* count total number of extents for merge */
6742 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6744 i
+= dl
->extent_cnt
;
6746 maxsize
= merge_extents(super
, i
);
6748 if (!check_env("IMSM_NO_PLATFORM") &&
6749 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
6750 pr_err("attempting to create a second volume with size less then remaining space. Aborting...\n");
6754 if (maxsize
< size
|| maxsize
== 0) {
6757 pr_err("no free space left on device. Aborting...\n");
6759 pr_err("not enough space to create volume of given size (%llu < %llu). Aborting...\n",
6765 *freesize
= maxsize
;
6768 int count
= count_volumes(super
->hba
,
6769 super
->orom
->dpa
, verbose
);
6770 if (super
->orom
->vphba
<= count
) {
6771 pr_vrb("platform does not support more than %d raid volumes.\n",
6772 super
->orom
->vphba
);
6779 static int imsm_get_free_size(struct supertype
*st
, int raiddisks
,
6780 unsigned long long size
, int chunk
,
6781 unsigned long long *freesize
)
6783 struct intel_super
*super
= st
->sb
;
6784 struct imsm_super
*mpb
= super
->anchor
;
6789 unsigned long long maxsize
;
6790 unsigned long long minsize
;
6794 /* find the largest common start free region of the possible disks */
6798 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6804 /* don't activate new spares if we are orom constrained
6805 * and there is already a volume active in the container
6807 if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
)
6810 e
= get_extents(super
, dl
);
6813 for (i
= 1; e
[i
-1].size
; i
++)
6821 maxsize
= merge_extents(super
, extent_cnt
);
6825 minsize
= chunk
* 2;
6827 if (cnt
< raiddisks
||
6828 (super
->orom
&& used
&& used
!= raiddisks
) ||
6829 maxsize
< minsize
||
6831 pr_err("not enough devices with space to create array.\n");
6832 return 0; /* No enough free spaces large enough */
6843 if (!check_env("IMSM_NO_PLATFORM") &&
6844 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
6845 pr_err("attempting to create a second volume with size less then remaining space. Aborting...\n");
6849 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6851 dl
->raiddisk
= cnt
++;
6855 dprintf("imsm: imsm_get_free_size() returns : %llu\n", size
);
6860 static int reserve_space(struct supertype
*st
, int raiddisks
,
6861 unsigned long long size
, int chunk
,
6862 unsigned long long *freesize
)
6864 struct intel_super
*super
= st
->sb
;
6869 rv
= imsm_get_free_size(st
, raiddisks
, size
, chunk
, freesize
);
6872 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6874 dl
->raiddisk
= cnt
++;
6881 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
6882 int raiddisks
, int *chunk
, unsigned long long size
,
6883 unsigned long long data_offset
,
6884 char *dev
, unsigned long long *freesize
,
6892 * if given unused devices create a container
6893 * if given given devices in a container create a member volume
6895 if (level
== LEVEL_CONTAINER
) {
6896 /* Must be a fresh device to add to a container */
6897 return validate_geometry_imsm_container(st
, level
, layout
,
6907 struct intel_super
*super
= st
->sb
;
6908 if (!validate_geometry_imsm_orom(st
->sb
, level
, layout
,
6909 raiddisks
, chunk
, size
,
6912 /* we are being asked to automatically layout a
6913 * new volume based on the current contents of
6914 * the container. If the the parameters can be
6915 * satisfied reserve_space will record the disks,
6916 * start offset, and size of the volume to be
6917 * created. add_to_super and getinfo_super
6918 * detect when autolayout is in progress.
6920 /* assuming that freesize is always given when array is
6922 if (super
->orom
&& freesize
) {
6924 count
= count_volumes(super
->hba
,
6925 super
->orom
->dpa
, verbose
);
6926 if (super
->orom
->vphba
<= count
) {
6927 pr_vrb("platform does not support more than %d raid volumes.\n",
6928 super
->orom
->vphba
);
6933 return reserve_space(st
, raiddisks
, size
,
6939 /* creating in a given container */
6940 return validate_geometry_imsm_volume(st
, level
, layout
,
6941 raiddisks
, chunk
, size
,
6943 dev
, freesize
, verbose
);
6946 /* This device needs to be a device in an 'imsm' container */
6947 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
6950 pr_err("Cannot create this array on device %s\n",
6955 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
6957 pr_err("Cannot open %s: %s\n",
6958 dev
, strerror(errno
));
6961 /* Well, it is in use by someone, maybe an 'imsm' container. */
6962 cfd
= open_container(fd
);
6966 pr_err("Cannot use %s: It is busy\n",
6970 sra
= sysfs_read(cfd
, NULL
, GET_VERSION
);
6971 if (sra
&& sra
->array
.major_version
== -1 &&
6972 strcmp(sra
->text_version
, "imsm") == 0)
6976 /* This is a member of a imsm container. Load the container
6977 * and try to create a volume
6979 struct intel_super
*super
;
6981 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
, NULL
, 1) == 0) {
6983 strcpy(st
->container_devnm
, fd2devnm(cfd
));
6985 return validate_geometry_imsm_volume(st
, level
, layout
,
6987 size
, data_offset
, dev
,
6994 pr_err("failed container membership check\n");
7000 static void default_geometry_imsm(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
7002 struct intel_super
*super
= st
->sb
;
7004 if (level
&& *level
== UnSet
)
7005 *level
= LEVEL_CONTAINER
;
7007 if (level
&& layout
&& *layout
== UnSet
)
7008 *layout
= imsm_level_to_layout(*level
);
7010 if (chunk
&& (*chunk
== UnSet
|| *chunk
== 0))
7011 *chunk
= imsm_default_chunk(super
->orom
);
7014 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
);
7016 static int kill_subarray_imsm(struct supertype
*st
)
7018 /* remove the subarray currently referenced by ->current_vol */
7020 struct intel_dev
**dp
;
7021 struct intel_super
*super
= st
->sb
;
7022 __u8 current_vol
= super
->current_vol
;
7023 struct imsm_super
*mpb
= super
->anchor
;
7025 if (super
->current_vol
< 0)
7027 super
->current_vol
= -1; /* invalidate subarray cursor */
7029 /* block deletions that would change the uuid of active subarrays
7031 * FIXME when immutable ids are available, but note that we'll
7032 * also need to fixup the invalidated/active subarray indexes in
7035 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7038 if (i
< current_vol
)
7040 sprintf(subarray
, "%u", i
);
7041 if (is_subarray_active(subarray
, st
->devnm
)) {
7042 pr_err("deleting subarray-%d would change the UUID of active subarray-%d, aborting\n",
7049 if (st
->update_tail
) {
7050 struct imsm_update_kill_array
*u
= xmalloc(sizeof(*u
));
7052 u
->type
= update_kill_array
;
7053 u
->dev_idx
= current_vol
;
7054 append_metadata_update(st
, u
, sizeof(*u
));
7059 for (dp
= &super
->devlist
; *dp
;)
7060 if ((*dp
)->index
== current_vol
) {
7063 handle_missing(super
, (*dp
)->dev
);
7064 if ((*dp
)->index
> current_vol
)
7069 /* no more raid devices, all active components are now spares,
7070 * but of course failed are still failed
7072 if (--mpb
->num_raid_devs
== 0) {
7075 for (d
= super
->disks
; d
; d
= d
->next
)
7080 super
->updates_pending
++;
7085 static int update_subarray_imsm(struct supertype
*st
, char *subarray
,
7086 char *update
, struct mddev_ident
*ident
)
7088 /* update the subarray currently referenced by ->current_vol */
7089 struct intel_super
*super
= st
->sb
;
7090 struct imsm_super
*mpb
= super
->anchor
;
7092 if (strcmp(update
, "name") == 0) {
7093 char *name
= ident
->name
;
7097 if (is_subarray_active(subarray
, st
->devnm
)) {
7098 pr_err("Unable to update name of active subarray\n");
7102 if (!check_name(super
, name
, 0))
7105 vol
= strtoul(subarray
, &ep
, 10);
7106 if (*ep
!= '\0' || vol
>= super
->anchor
->num_raid_devs
)
7109 if (st
->update_tail
) {
7110 struct imsm_update_rename_array
*u
= xmalloc(sizeof(*u
));
7112 u
->type
= update_rename_array
;
7114 snprintf((char *) u
->name
, MAX_RAID_SERIAL_LEN
, "%s", name
);
7115 append_metadata_update(st
, u
, sizeof(*u
));
7117 struct imsm_dev
*dev
;
7120 dev
= get_imsm_dev(super
, vol
);
7121 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
7122 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7123 dev
= get_imsm_dev(super
, i
);
7124 handle_missing(super
, dev
);
7126 super
->updates_pending
++;
7133 #endif /* MDASSEMBLE */
7135 static int is_gen_migration(struct imsm_dev
*dev
)
7140 if (!dev
->vol
.migr_state
)
7143 if (migr_type(dev
) == MIGR_GEN_MIGR
)
7149 static int is_rebuilding(struct imsm_dev
*dev
)
7151 struct imsm_map
*migr_map
;
7153 if (!dev
->vol
.migr_state
)
7156 if (migr_type(dev
) != MIGR_REBUILD
)
7159 migr_map
= get_imsm_map(dev
, MAP_1
);
7161 if (migr_map
->map_state
== IMSM_T_STATE_DEGRADED
)
7168 static int is_initializing(struct imsm_dev
*dev
)
7170 struct imsm_map
*migr_map
;
7172 if (!dev
->vol
.migr_state
)
7175 if (migr_type(dev
) != MIGR_INIT
)
7178 migr_map
= get_imsm_map(dev
, MAP_1
);
7180 if (migr_map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
7187 static void update_recovery_start(struct intel_super
*super
,
7188 struct imsm_dev
*dev
,
7189 struct mdinfo
*array
)
7191 struct mdinfo
*rebuild
= NULL
;
7195 if (!is_rebuilding(dev
))
7198 /* Find the rebuild target, but punt on the dual rebuild case */
7199 for (d
= array
->devs
; d
; d
= d
->next
)
7200 if (d
->recovery_start
== 0) {
7207 /* (?) none of the disks are marked with
7208 * IMSM_ORD_REBUILD, so assume they are missing and the
7209 * disk_ord_tbl was not correctly updated
7211 dprintf("failed to locate out-of-sync disk\n");
7215 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
7216 rebuild
->recovery_start
= units
* blocks_per_migr_unit(super
, dev
);
7220 static int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
);
7223 static struct mdinfo
*container_content_imsm(struct supertype
*st
, char *subarray
)
7225 /* Given a container loaded by load_super_imsm_all,
7226 * extract information about all the arrays into
7228 * If 'subarray' is given, just extract info about that array.
7230 * For each imsm_dev create an mdinfo, fill it in,
7231 * then look for matching devices in super->disks
7232 * and create appropriate device mdinfo.
7234 struct intel_super
*super
= st
->sb
;
7235 struct imsm_super
*mpb
= super
->anchor
;
7236 struct mdinfo
*rest
= NULL
;
7240 int spare_disks
= 0;
7242 /* do not assemble arrays when not all attributes are supported */
7243 if (imsm_check_attributes(mpb
->attributes
) == 0) {
7245 pr_err("Unsupported attributes in IMSM metadata.Arrays activation is blocked.\n");
7248 /* count spare devices, not used in maps
7250 for (d
= super
->disks
; d
; d
= d
->next
)
7254 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7255 struct imsm_dev
*dev
;
7256 struct imsm_map
*map
;
7257 struct imsm_map
*map2
;
7258 struct mdinfo
*this;
7266 (i
!= strtoul(subarray
, &ep
, 10) || *ep
!= '\0'))
7269 dev
= get_imsm_dev(super
, i
);
7270 map
= get_imsm_map(dev
, MAP_0
);
7271 map2
= get_imsm_map(dev
, MAP_1
);
7273 /* do not publish arrays that are in the middle of an
7274 * unsupported migration
7276 if (dev
->vol
.migr_state
&&
7277 (migr_type(dev
) == MIGR_STATE_CHANGE
)) {
7278 pr_err("cannot assemble volume '%.16s': unsupported migration in progress\n",
7282 /* do not publish arrays that are not support by controller's
7286 this = xmalloc(sizeof(*this));
7288 super
->current_vol
= i
;
7289 getinfo_super_imsm_volume(st
, this, NULL
);
7292 chunk
= __le16_to_cpu(map
->blocks_per_strip
) >> 1;
7293 /* mdadm does not support all metadata features- set the bit in all arrays state */
7294 if (!validate_geometry_imsm_orom(super
,
7295 get_imsm_raid_level(map
), /* RAID level */
7296 imsm_level_to_layout(get_imsm_raid_level(map
)),
7297 map
->num_members
, /* raid disks */
7298 &chunk
, join_u32(dev
->size_low
, dev
->size_high
),
7300 pr_err("IMSM RAID geometry validation failed. Array %s activation is blocked.\n",
7302 this->array
.state
|=
7303 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
7304 (1<<MD_SB_BLOCK_VOLUME
);
7308 /* if array has bad blocks, set suitable bit in all arrays state */
7310 this->array
.state
|=
7311 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
7312 (1<<MD_SB_BLOCK_VOLUME
);
7314 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
7315 unsigned long long recovery_start
;
7316 struct mdinfo
*info_d
;
7323 idx
= get_imsm_disk_idx(dev
, slot
, MAP_0
);
7324 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
7325 for (d
= super
->disks
; d
; d
= d
->next
)
7326 if (d
->index
== idx
)
7329 recovery_start
= MaxSector
;
7332 if (d
&& is_failed(&d
->disk
))
7334 if (ord
& IMSM_ORD_REBUILD
)
7338 * if we skip some disks the array will be assmebled degraded;
7339 * reset resync start to avoid a dirty-degraded
7340 * situation when performing the intial sync
7342 * FIXME handle dirty degraded
7344 if ((skip
|| recovery_start
== 0) && !dev
->vol
.dirty
)
7345 this->resync_start
= MaxSector
;
7349 info_d
= xcalloc(1, sizeof(*info_d
));
7350 info_d
->next
= this->devs
;
7351 this->devs
= info_d
;
7353 info_d
->disk
.number
= d
->index
;
7354 info_d
->disk
.major
= d
->major
;
7355 info_d
->disk
.minor
= d
->minor
;
7356 info_d
->disk
.raid_disk
= slot
;
7357 info_d
->recovery_start
= recovery_start
;
7359 if (slot
< map2
->num_members
)
7360 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
7362 this->array
.spare_disks
++;
7364 if (slot
< map
->num_members
)
7365 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
7367 this->array
.spare_disks
++;
7369 if (info_d
->recovery_start
== MaxSector
)
7370 this->array
.working_disks
++;
7372 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
7373 info_d
->data_offset
= pba_of_lba0(map
);
7375 if (map
->raid_level
== 5) {
7376 info_d
->component_size
=
7377 num_data_stripes(map
) *
7378 map
->blocks_per_strip
;
7380 info_d
->component_size
= blocks_per_member(map
);
7383 info_d
->bb
.supported
= 0;
7384 get_volume_badblocks(super
->bbm_log
, ord_to_idx(ord
),
7385 info_d
->data_offset
,
7386 info_d
->component_size
,
7389 /* now that the disk list is up-to-date fixup recovery_start */
7390 update_recovery_start(super
, dev
, this);
7391 this->array
.spare_disks
+= spare_disks
;
7394 /* check for reshape */
7395 if (this->reshape_active
== 1)
7396 recover_backup_imsm(st
, this);
7404 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
,
7405 int failed
, int look_in_map
)
7407 struct imsm_map
*map
;
7409 map
= get_imsm_map(dev
, look_in_map
);
7412 return map
->map_state
== IMSM_T_STATE_UNINITIALIZED
?
7413 IMSM_T_STATE_UNINITIALIZED
: IMSM_T_STATE_NORMAL
;
7415 switch (get_imsm_raid_level(map
)) {
7417 return IMSM_T_STATE_FAILED
;
7420 if (failed
< map
->num_members
)
7421 return IMSM_T_STATE_DEGRADED
;
7423 return IMSM_T_STATE_FAILED
;
7428 * check to see if any mirrors have failed, otherwise we
7429 * are degraded. Even numbered slots are mirrored on
7433 /* gcc -Os complains that this is unused */
7434 int insync
= insync
;
7436 for (i
= 0; i
< map
->num_members
; i
++) {
7437 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_X
);
7438 int idx
= ord_to_idx(ord
);
7439 struct imsm_disk
*disk
;
7441 /* reset the potential in-sync count on even-numbered
7442 * slots. num_copies is always 2 for imsm raid10
7447 disk
= get_imsm_disk(super
, idx
);
7448 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
7451 /* no in-sync disks left in this mirror the
7455 return IMSM_T_STATE_FAILED
;
7458 return IMSM_T_STATE_DEGRADED
;
7462 return IMSM_T_STATE_DEGRADED
;
7464 return IMSM_T_STATE_FAILED
;
7470 return map
->map_state
;
7473 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
,
7478 struct imsm_disk
*disk
;
7479 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7480 struct imsm_map
*prev
= get_imsm_map(dev
, MAP_1
);
7481 struct imsm_map
*map_for_loop
;
7486 /* at the beginning of migration we set IMSM_ORD_REBUILD on
7487 * disks that are being rebuilt. New failures are recorded to
7488 * map[0]. So we look through all the disks we started with and
7489 * see if any failures are still present, or if any new ones
7493 if (prev
&& (map
->num_members
< prev
->num_members
))
7494 map_for_loop
= prev
;
7496 for (i
= 0; i
< map_for_loop
->num_members
; i
++) {
7498 /* when MAP_X is passed both maps failures are counted
7501 (look_in_map
== MAP_1
|| look_in_map
== MAP_X
) &&
7502 i
< prev
->num_members
) {
7503 ord
= __le32_to_cpu(prev
->disk_ord_tbl
[i
]);
7504 idx_1
= ord_to_idx(ord
);
7506 disk
= get_imsm_disk(super
, idx_1
);
7507 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
7510 if ((look_in_map
== MAP_0
|| look_in_map
== MAP_X
) &&
7511 i
< map
->num_members
) {
7512 ord
= __le32_to_cpu(map
->disk_ord_tbl
[i
]);
7513 idx
= ord_to_idx(ord
);
7516 disk
= get_imsm_disk(super
, idx
);
7517 if (!disk
|| is_failed(disk
) ||
7518 ord
& IMSM_ORD_REBUILD
)
7528 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
7531 struct intel_super
*super
= c
->sb
;
7532 struct imsm_super
*mpb
= super
->anchor
;
7533 struct imsm_update_prealloc_bb_mem u
;
7535 if (atoi(inst
) >= mpb
->num_raid_devs
) {
7536 pr_err("subarry index %d, out of range\n", atoi(inst
));
7540 dprintf("imsm: open_new %s\n", inst
);
7541 a
->info
.container_member
= atoi(inst
);
7543 u
.type
= update_prealloc_badblocks_mem
;
7544 imsm_update_metadata_locally(c
, &u
, sizeof(u
));
7549 static int is_resyncing(struct imsm_dev
*dev
)
7551 struct imsm_map
*migr_map
;
7553 if (!dev
->vol
.migr_state
)
7556 if (migr_type(dev
) == MIGR_INIT
||
7557 migr_type(dev
) == MIGR_REPAIR
)
7560 if (migr_type(dev
) == MIGR_GEN_MIGR
)
7563 migr_map
= get_imsm_map(dev
, MAP_1
);
7565 if (migr_map
->map_state
== IMSM_T_STATE_NORMAL
&&
7566 dev
->vol
.migr_type
!= MIGR_GEN_MIGR
)
7572 /* return true if we recorded new information */
7573 static int mark_failure(struct intel_super
*super
,
7574 struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
7578 struct imsm_map
*map
;
7579 char buf
[MAX_RAID_SERIAL_LEN
+3];
7580 unsigned int len
, shift
= 0;
7582 /* new failures are always set in map[0] */
7583 map
= get_imsm_map(dev
, MAP_0
);
7585 slot
= get_imsm_disk_slot(map
, idx
);
7589 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
7590 if (is_failed(disk
) && (ord
& IMSM_ORD_REBUILD
))
7593 memcpy(buf
, disk
->serial
, MAX_RAID_SERIAL_LEN
);
7594 buf
[MAX_RAID_SERIAL_LEN
] = '\000';
7596 if ((len
= strlen(buf
)) >= MAX_RAID_SERIAL_LEN
)
7597 shift
= len
- MAX_RAID_SERIAL_LEN
+ 1;
7598 strncpy((char *)disk
->serial
, &buf
[shift
], MAX_RAID_SERIAL_LEN
);
7600 disk
->status
|= FAILED_DISK
;
7601 set_imsm_ord_tbl_ent(map
, slot
, idx
| IMSM_ORD_REBUILD
);
7602 /* mark failures in second map if second map exists and this disk
7604 * This is valid for migration, initialization and rebuild
7606 if (dev
->vol
.migr_state
) {
7607 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
7608 int slot2
= get_imsm_disk_slot(map2
, idx
);
7610 if (slot2
< map2
->num_members
&& slot2
>= 0)
7611 set_imsm_ord_tbl_ent(map2
, slot2
,
7612 idx
| IMSM_ORD_REBUILD
);
7614 if (map
->failed_disk_num
== 0xff)
7615 map
->failed_disk_num
= slot
;
7617 clear_disk_badblocks(super
->bbm_log
, ord_to_idx(ord
));
7622 static void mark_missing(struct intel_super
*super
,
7623 struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
7625 mark_failure(super
, dev
, disk
, idx
);
7627 if (disk
->scsi_id
== __cpu_to_le32(~(__u32
)0))
7630 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
7631 memmove(&disk
->serial
[0], &disk
->serial
[1], MAX_RAID_SERIAL_LEN
- 1);
7634 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
)
7638 if (!super
->missing
)
7641 /* When orom adds replacement for missing disk it does
7642 * not remove entry of missing disk, but just updates map with
7643 * new added disk. So it is not enough just to test if there is
7644 * any missing disk, we have to look if there are any failed disks
7645 * in map to stop migration */
7647 dprintf("imsm: mark missing\n");
7648 /* end process for initialization and rebuild only
7650 if (is_gen_migration(dev
) == 0) {
7654 failed
= imsm_count_failed(super
, dev
, MAP_0
);
7655 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7658 end_migration(dev
, super
, map_state
);
7660 for (dl
= super
->missing
; dl
; dl
= dl
->next
)
7661 mark_missing(super
, dev
, &dl
->disk
, dl
->index
);
7662 super
->updates_pending
++;
7665 static unsigned long long imsm_set_array_size(struct imsm_dev
*dev
,
7668 int used_disks
= imsm_num_data_members(dev
, MAP_0
);
7669 unsigned long long array_blocks
;
7670 struct imsm_map
*map
;
7672 if (used_disks
== 0) {
7673 /* when problems occures
7674 * return current array_blocks value
7676 array_blocks
= __le32_to_cpu(dev
->size_high
);
7677 array_blocks
= array_blocks
<< 32;
7678 array_blocks
+= __le32_to_cpu(dev
->size_low
);
7680 return array_blocks
;
7683 /* set array size in metadata
7685 if (new_size
<= 0) {
7686 /* OLCE size change is caused by added disks
7688 map
= get_imsm_map(dev
, MAP_0
);
7689 array_blocks
= blocks_per_member(map
) * used_disks
;
7691 /* Online Volume Size Change
7692 * Using available free space
7694 array_blocks
= new_size
;
7697 /* round array size down to closest MB
7699 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
7700 dev
->size_low
= __cpu_to_le32((__u32
)array_blocks
);
7701 dev
->size_high
= __cpu_to_le32((__u32
)(array_blocks
>> 32));
7703 return array_blocks
;
7706 static void imsm_set_disk(struct active_array
*a
, int n
, int state
);
7708 static void imsm_progress_container_reshape(struct intel_super
*super
)
7710 /* if no device has a migr_state, but some device has a
7711 * different number of members than the previous device, start
7712 * changing the number of devices in this device to match
7715 struct imsm_super
*mpb
= super
->anchor
;
7716 int prev_disks
= -1;
7720 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7721 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
7722 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7723 struct imsm_map
*map2
;
7724 int prev_num_members
;
7726 if (dev
->vol
.migr_state
)
7729 if (prev_disks
== -1)
7730 prev_disks
= map
->num_members
;
7731 if (prev_disks
== map
->num_members
)
7734 /* OK, this array needs to enter reshape mode.
7735 * i.e it needs a migr_state
7738 copy_map_size
= sizeof_imsm_map(map
);
7739 prev_num_members
= map
->num_members
;
7740 map
->num_members
= prev_disks
;
7741 dev
->vol
.migr_state
= 1;
7742 dev
->vol
.curr_migr_unit
= 0;
7743 set_migr_type(dev
, MIGR_GEN_MIGR
);
7744 for (i
= prev_num_members
;
7745 i
< map
->num_members
; i
++)
7746 set_imsm_ord_tbl_ent(map
, i
, i
);
7747 map2
= get_imsm_map(dev
, MAP_1
);
7748 /* Copy the current map */
7749 memcpy(map2
, map
, copy_map_size
);
7750 map2
->num_members
= prev_num_members
;
7752 imsm_set_array_size(dev
, -1);
7753 super
->clean_migration_record_by_mdmon
= 1;
7754 super
->updates_pending
++;
7758 /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild
7759 * states are handled in imsm_set_disk() with one exception, when a
7760 * resync is stopped due to a new failure this routine will set the
7761 * 'degraded' state for the array.
7763 static int imsm_set_array_state(struct active_array
*a
, int consistent
)
7765 int inst
= a
->info
.container_member
;
7766 struct intel_super
*super
= a
->container
->sb
;
7767 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7768 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7769 int failed
= imsm_count_failed(super
, dev
, MAP_0
);
7770 __u8 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7771 __u32 blocks_per_unit
;
7773 if (dev
->vol
.migr_state
&&
7774 dev
->vol
.migr_type
== MIGR_GEN_MIGR
) {
7775 /* array state change is blocked due to reshape action
7777 * - abort the reshape (if last_checkpoint is 0 and action!= reshape)
7778 * - finish the reshape (if last_checkpoint is big and action != reshape)
7779 * - update curr_migr_unit
7781 if (a
->curr_action
== reshape
) {
7782 /* still reshaping, maybe update curr_migr_unit */
7783 goto mark_checkpoint
;
7785 if (a
->last_checkpoint
== 0 && a
->prev_action
== reshape
) {
7786 /* for some reason we aborted the reshape.
7788 * disable automatic metadata rollback
7789 * user action is required to recover process
7792 struct imsm_map
*map2
=
7793 get_imsm_map(dev
, MAP_1
);
7794 dev
->vol
.migr_state
= 0;
7795 set_migr_type(dev
, 0);
7796 dev
->vol
.curr_migr_unit
= 0;
7798 sizeof_imsm_map(map2
));
7799 super
->updates_pending
++;
7802 if (a
->last_checkpoint
>= a
->info
.component_size
) {
7803 unsigned long long array_blocks
;
7807 used_disks
= imsm_num_data_members(dev
, MAP_0
);
7808 if (used_disks
> 0) {
7810 blocks_per_member(map
) *
7812 /* round array size down to closest MB
7814 array_blocks
= (array_blocks
7815 >> SECT_PER_MB_SHIFT
)
7816 << SECT_PER_MB_SHIFT
;
7817 a
->info
.custom_array_size
= array_blocks
;
7818 /* encourage manager to update array
7822 a
->check_reshape
= 1;
7824 /* finalize online capacity expansion/reshape */
7825 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
7827 mdi
->disk
.raid_disk
,
7830 imsm_progress_container_reshape(super
);
7835 /* before we activate this array handle any missing disks */
7836 if (consistent
== 2)
7837 handle_missing(super
, dev
);
7839 if (consistent
== 2 &&
7840 (!is_resync_complete(&a
->info
) ||
7841 map_state
!= IMSM_T_STATE_NORMAL
||
7842 dev
->vol
.migr_state
))
7845 if (is_resync_complete(&a
->info
)) {
7846 /* complete intialization / resync,
7847 * recovery and interrupted recovery is completed in
7850 if (is_resyncing(dev
)) {
7851 dprintf("imsm: mark resync done\n");
7852 end_migration(dev
, super
, map_state
);
7853 super
->updates_pending
++;
7854 a
->last_checkpoint
= 0;
7856 } else if ((!is_resyncing(dev
) && !failed
) &&
7857 (imsm_reshape_blocks_arrays_changes(super
) == 0)) {
7858 /* mark the start of the init process if nothing is failed */
7859 dprintf("imsm: mark resync start\n");
7860 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
7861 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_INIT
);
7863 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_REPAIR
);
7864 super
->updates_pending
++;
7868 /* skip checkpointing for general migration,
7869 * it is controlled in mdadm
7871 if (is_gen_migration(dev
))
7872 goto skip_mark_checkpoint
;
7874 /* check if we can update curr_migr_unit from resync_start, recovery_start */
7875 blocks_per_unit
= blocks_per_migr_unit(super
, dev
);
7876 if (blocks_per_unit
) {
7880 units
= a
->last_checkpoint
/ blocks_per_unit
;
7883 /* check that we did not overflow 32-bits, and that
7884 * curr_migr_unit needs updating
7886 if (units32
== units
&&
7888 __le32_to_cpu(dev
->vol
.curr_migr_unit
) != units32
) {
7889 dprintf("imsm: mark checkpoint (%u)\n", units32
);
7890 dev
->vol
.curr_migr_unit
= __cpu_to_le32(units32
);
7891 super
->updates_pending
++;
7895 skip_mark_checkpoint
:
7896 /* mark dirty / clean */
7897 if (dev
->vol
.dirty
!= !consistent
) {
7898 dprintf("imsm: mark '%s'\n", consistent
? "clean" : "dirty");
7903 super
->updates_pending
++;
7909 static int imsm_disk_slot_to_ord(struct active_array
*a
, int slot
)
7911 int inst
= a
->info
.container_member
;
7912 struct intel_super
*super
= a
->container
->sb
;
7913 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7914 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7916 if (slot
> map
->num_members
) {
7917 pr_err("imsm: imsm_disk_slot_to_ord %d out of range 0..%d\n",
7918 slot
, map
->num_members
- 1);
7925 return get_imsm_ord_tbl_ent(dev
, slot
, MAP_0
);
7928 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
7930 int inst
= a
->info
.container_member
;
7931 struct intel_super
*super
= a
->container
->sb
;
7932 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7933 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7934 struct imsm_disk
*disk
;
7936 int recovery_not_finished
= 0;
7941 ord
= imsm_disk_slot_to_ord(a
, n
);
7945 dprintf("imsm: set_disk %d:%x\n", n
, state
);
7946 disk
= get_imsm_disk(super
, ord_to_idx(ord
));
7948 /* check for new failures */
7949 if (state
& DS_FAULTY
) {
7950 if (mark_failure(super
, dev
, disk
, ord_to_idx(ord
)))
7951 super
->updates_pending
++;
7954 /* check if in_sync */
7955 if (state
& DS_INSYNC
&& ord
& IMSM_ORD_REBUILD
&& is_rebuilding(dev
)) {
7956 struct imsm_map
*migr_map
= get_imsm_map(dev
, MAP_1
);
7958 set_imsm_ord_tbl_ent(migr_map
, n
, ord_to_idx(ord
));
7959 super
->updates_pending
++;
7962 failed
= imsm_count_failed(super
, dev
, MAP_0
);
7963 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7965 /* check if recovery complete, newly degraded, or failed */
7966 dprintf("imsm: Detected transition to state ");
7967 switch (map_state
) {
7968 case IMSM_T_STATE_NORMAL
: /* transition to normal state */
7969 dprintf("normal: ");
7970 if (is_rebuilding(dev
)) {
7971 dprintf_cont("while rebuilding");
7972 /* check if recovery is really finished */
7973 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
7974 if (mdi
->recovery_start
!= MaxSector
) {
7975 recovery_not_finished
= 1;
7978 if (recovery_not_finished
) {
7980 dprintf("Rebuild has not finished yet, state not changed");
7981 if (a
->last_checkpoint
< mdi
->recovery_start
) {
7982 a
->last_checkpoint
= mdi
->recovery_start
;
7983 super
->updates_pending
++;
7987 end_migration(dev
, super
, map_state
);
7988 map
= get_imsm_map(dev
, MAP_0
);
7989 map
->failed_disk_num
= ~0;
7990 super
->updates_pending
++;
7991 a
->last_checkpoint
= 0;
7994 if (is_gen_migration(dev
)) {
7995 dprintf_cont("while general migration");
7996 if (a
->last_checkpoint
>= a
->info
.component_size
)
7997 end_migration(dev
, super
, map_state
);
7999 map
->map_state
= map_state
;
8000 map
= get_imsm_map(dev
, MAP_0
);
8001 map
->failed_disk_num
= ~0;
8002 super
->updates_pending
++;
8006 case IMSM_T_STATE_DEGRADED
: /* transition to degraded state */
8007 dprintf_cont("degraded: ");
8008 if (map
->map_state
!= map_state
&& !dev
->vol
.migr_state
) {
8009 dprintf_cont("mark degraded");
8010 map
->map_state
= map_state
;
8011 super
->updates_pending
++;
8012 a
->last_checkpoint
= 0;
8015 if (is_rebuilding(dev
)) {
8016 dprintf_cont("while rebuilding.");
8017 if (map
->map_state
!= map_state
) {
8018 dprintf_cont(" Map state change");
8019 end_migration(dev
, super
, map_state
);
8020 super
->updates_pending
++;
8024 if (is_gen_migration(dev
)) {
8025 dprintf_cont("while general migration");
8026 if (a
->last_checkpoint
>= a
->info
.component_size
)
8027 end_migration(dev
, super
, map_state
);
8029 map
->map_state
= map_state
;
8030 manage_second_map(super
, dev
);
8032 super
->updates_pending
++;
8035 if (is_initializing(dev
)) {
8036 dprintf_cont("while initialization.");
8037 map
->map_state
= map_state
;
8038 super
->updates_pending
++;
8042 case IMSM_T_STATE_FAILED
: /* transition to failed state */
8043 dprintf_cont("failed: ");
8044 if (is_gen_migration(dev
)) {
8045 dprintf_cont("while general migration");
8046 map
->map_state
= map_state
;
8047 super
->updates_pending
++;
8050 if (map
->map_state
!= map_state
) {
8051 dprintf_cont("mark failed");
8052 end_migration(dev
, super
, map_state
);
8053 super
->updates_pending
++;
8054 a
->last_checkpoint
= 0;
8059 dprintf_cont("state %i\n", map_state
);
8064 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
)
8067 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
8068 unsigned long long dsize
;
8069 unsigned long long sectors
;
8070 unsigned int sector_size
;
8072 get_dev_sector_size(fd
, NULL
, §or_size
);
8073 get_dev_size(fd
, NULL
, &dsize
);
8075 if (mpb_size
> sector_size
) {
8076 /* -1 to account for anchor */
8077 sectors
= mpb_sectors(mpb
, sector_size
) - 1;
8079 /* write the extended mpb to the sectors preceeding the anchor */
8080 if (lseek64(fd
, dsize
- (sector_size
* (2 + sectors
)),
8084 if ((unsigned long long)write(fd
, buf
+ sector_size
,
8085 sector_size
* sectors
) != sector_size
* sectors
)
8089 /* first block is stored on second to last sector of the disk */
8090 if (lseek64(fd
, dsize
- (sector_size
* 2), SEEK_SET
) < 0)
8093 if (write(fd
, buf
, sector_size
) != sector_size
)
8099 static void imsm_sync_metadata(struct supertype
*container
)
8101 struct intel_super
*super
= container
->sb
;
8103 dprintf("sync metadata: %d\n", super
->updates_pending
);
8104 if (!super
->updates_pending
)
8107 write_super_imsm(container
, 0);
8109 super
->updates_pending
= 0;
8112 static struct dl
*imsm_readd(struct intel_super
*super
, int idx
, struct active_array
*a
)
8114 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
8115 int i
= get_imsm_disk_idx(dev
, idx
, MAP_X
);
8118 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
8122 if (dl
&& is_failed(&dl
->disk
))
8126 dprintf("found %x:%x\n", dl
->major
, dl
->minor
);
8131 static struct dl
*imsm_add_spare(struct intel_super
*super
, int slot
,
8132 struct active_array
*a
, int activate_new
,
8133 struct mdinfo
*additional_test_list
)
8135 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
8136 int idx
= get_imsm_disk_idx(dev
, slot
, MAP_X
);
8137 struct imsm_super
*mpb
= super
->anchor
;
8138 struct imsm_map
*map
;
8139 unsigned long long pos
;
8144 __u32 array_start
= 0;
8145 __u32 array_end
= 0;
8147 struct mdinfo
*test_list
;
8149 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
8150 /* If in this array, skip */
8151 for (d
= a
->info
.devs
; d
; d
= d
->next
)
8152 if (d
->state_fd
>= 0 &&
8153 d
->disk
.major
== dl
->major
&&
8154 d
->disk
.minor
== dl
->minor
) {
8155 dprintf("%x:%x already in array\n",
8156 dl
->major
, dl
->minor
);
8161 test_list
= additional_test_list
;
8163 if (test_list
->disk
.major
== dl
->major
&&
8164 test_list
->disk
.minor
== dl
->minor
) {
8165 dprintf("%x:%x already in additional test list\n",
8166 dl
->major
, dl
->minor
);
8169 test_list
= test_list
->next
;
8174 /* skip in use or failed drives */
8175 if (is_failed(&dl
->disk
) || idx
== dl
->index
||
8177 dprintf("%x:%x status (failed: %d index: %d)\n",
8178 dl
->major
, dl
->minor
, is_failed(&dl
->disk
), idx
);
8182 /* skip pure spares when we are looking for partially
8183 * assimilated drives
8185 if (dl
->index
== -1 && !activate_new
)
8188 /* Does this unused device have the requisite free space?
8189 * It needs to be able to cover all member volumes
8191 ex
= get_extents(super
, dl
);
8193 dprintf("cannot get extents\n");
8196 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
8197 dev
= get_imsm_dev(super
, i
);
8198 map
= get_imsm_map(dev
, MAP_0
);
8200 /* check if this disk is already a member of
8203 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
8209 array_start
= pba_of_lba0(map
);
8210 array_end
= array_start
+
8211 blocks_per_member(map
) - 1;
8214 /* check that we can start at pba_of_lba0 with
8215 * blocks_per_member of space
8217 if (array_start
>= pos
&& array_end
< ex
[j
].start
) {
8221 pos
= ex
[j
].start
+ ex
[j
].size
;
8223 } while (ex
[j
-1].size
);
8230 if (i
< mpb
->num_raid_devs
) {
8231 dprintf("%x:%x does not have %u to %u available\n",
8232 dl
->major
, dl
->minor
, array_start
, array_end
);
8242 static int imsm_rebuild_allowed(struct supertype
*cont
, int dev_idx
, int failed
)
8244 struct imsm_dev
*dev2
;
8245 struct imsm_map
*map
;
8251 dev2
= get_imsm_dev(cont
->sb
, dev_idx
);
8253 state
= imsm_check_degraded(cont
->sb
, dev2
, failed
, MAP_0
);
8254 if (state
== IMSM_T_STATE_FAILED
) {
8255 map
= get_imsm_map(dev2
, MAP_0
);
8258 for (slot
= 0; slot
< map
->num_members
; slot
++) {
8260 * Check if failed disks are deleted from intel
8261 * disk list or are marked to be deleted
8263 idx
= get_imsm_disk_idx(dev2
, slot
, MAP_X
);
8264 idisk
= get_imsm_dl_disk(cont
->sb
, idx
);
8266 * Do not rebuild the array if failed disks
8267 * from failed sub-array are not removed from
8271 is_failed(&idisk
->disk
) &&
8272 (idisk
->action
!= DISK_REMOVE
))
8280 static struct mdinfo
*imsm_activate_spare(struct active_array
*a
,
8281 struct metadata_update
**updates
)
8284 * Find a device with unused free space and use it to replace a
8285 * failed/vacant region in an array. We replace failed regions one a
8286 * array at a time. The result is that a new spare disk will be added
8287 * to the first failed array and after the monitor has finished
8288 * propagating failures the remainder will be consumed.
8290 * FIXME add a capability for mdmon to request spares from another
8294 struct intel_super
*super
= a
->container
->sb
;
8295 int inst
= a
->info
.container_member
;
8296 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
8297 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8298 int failed
= a
->info
.array
.raid_disks
;
8299 struct mdinfo
*rv
= NULL
;
8302 struct metadata_update
*mu
;
8304 struct imsm_update_activate_spare
*u
;
8309 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
8310 if ((d
->curr_state
& DS_FAULTY
) &&
8312 /* wait for Removal to happen */
8314 if (d
->state_fd
>= 0)
8318 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
8319 inst
, failed
, a
->info
.array
.raid_disks
, a
->info
.array
.level
);
8321 if (imsm_reshape_blocks_arrays_changes(super
))
8324 /* Cannot activate another spare if rebuild is in progress already
8326 if (is_rebuilding(dev
)) {
8327 dprintf("imsm: No spare activation allowed. Rebuild in progress already.\n");
8331 if (a
->info
.array
.level
== 4)
8332 /* No repair for takeovered array
8333 * imsm doesn't support raid4
8337 if (imsm_check_degraded(super
, dev
, failed
, MAP_0
) !=
8338 IMSM_T_STATE_DEGRADED
)
8341 if (get_imsm_map(dev
, MAP_0
)->map_state
== IMSM_T_STATE_UNINITIALIZED
) {
8342 dprintf("imsm: No spare activation allowed. Volume is not initialized.\n");
8347 * If there are any failed disks check state of the other volume.
8348 * Block rebuild if the another one is failed until failed disks
8349 * are removed from container.
8352 dprintf("found failed disks in %.*s, check if there anotherfailed sub-array.\n",
8353 MAX_RAID_SERIAL_LEN
, dev
->volume
);
8354 /* check if states of the other volumes allow for rebuild */
8355 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
8357 allowed
= imsm_rebuild_allowed(a
->container
,
8365 /* For each slot, if it is not working, find a spare */
8366 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
8367 for (d
= a
->info
.devs
; d
; d
= d
->next
)
8368 if (d
->disk
.raid_disk
== i
)
8370 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
8371 if (d
&& (d
->state_fd
>= 0))
8375 * OK, this device needs recovery. Try to re-add the
8376 * previous occupant of this slot, if this fails see if
8377 * we can continue the assimilation of a spare that was
8378 * partially assimilated, finally try to activate a new
8381 dl
= imsm_readd(super
, i
, a
);
8383 dl
= imsm_add_spare(super
, i
, a
, 0, rv
);
8385 dl
= imsm_add_spare(super
, i
, a
, 1, rv
);
8389 /* found a usable disk with enough space */
8390 di
= xcalloc(1, sizeof(*di
));
8392 /* dl->index will be -1 in the case we are activating a
8393 * pristine spare. imsm_process_update() will create a
8394 * new index in this case. Once a disk is found to be
8395 * failed in all member arrays it is kicked from the
8398 di
->disk
.number
= dl
->index
;
8400 /* (ab)use di->devs to store a pointer to the device
8403 di
->devs
= (struct mdinfo
*) dl
;
8405 di
->disk
.raid_disk
= i
;
8406 di
->disk
.major
= dl
->major
;
8407 di
->disk
.minor
= dl
->minor
;
8409 di
->recovery_start
= 0;
8410 di
->data_offset
= pba_of_lba0(map
);
8411 di
->component_size
= a
->info
.component_size
;
8412 di
->container_member
= inst
;
8413 di
->bb
.supported
= 0;
8414 super
->random
= random32();
8418 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
8419 i
, di
->data_offset
);
8423 /* No spares found */
8425 /* Now 'rv' has a list of devices to return.
8426 * Create a metadata_update record to update the
8427 * disk_ord_tbl for the array
8429 mu
= xmalloc(sizeof(*mu
));
8430 mu
->buf
= xcalloc(num_spares
,
8431 sizeof(struct imsm_update_activate_spare
));
8433 mu
->space_list
= NULL
;
8434 mu
->len
= sizeof(struct imsm_update_activate_spare
) * num_spares
;
8435 mu
->next
= *updates
;
8436 u
= (struct imsm_update_activate_spare
*) mu
->buf
;
8438 for (di
= rv
; di
; di
= di
->next
) {
8439 u
->type
= update_activate_spare
;
8440 u
->dl
= (struct dl
*) di
->devs
;
8442 u
->slot
= di
->disk
.raid_disk
;
8453 static int disks_overlap(struct intel_super
*super
, int idx
, struct imsm_update_create_array
*u
)
8455 struct imsm_dev
*dev
= get_imsm_dev(super
, idx
);
8456 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8457 struct imsm_map
*new_map
= get_imsm_map(&u
->dev
, MAP_0
);
8458 struct disk_info
*inf
= get_disk_info(u
);
8459 struct imsm_disk
*disk
;
8463 for (i
= 0; i
< map
->num_members
; i
++) {
8464 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
, MAP_X
));
8465 for (j
= 0; j
< new_map
->num_members
; j
++)
8466 if (serialcmp(disk
->serial
, inf
[j
].serial
) == 0)
8473 static struct dl
*get_disk_super(struct intel_super
*super
, int major
, int minor
)
8477 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
8478 if (dl
->major
== major
&& dl
->minor
== minor
)
8483 static int remove_disk_super(struct intel_super
*super
, int major
, int minor
)
8489 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
8490 if (dl
->major
== major
&& dl
->minor
== minor
) {
8493 prev
->next
= dl
->next
;
8495 super
->disks
= dl
->next
;
8497 __free_imsm_disk(dl
);
8498 dprintf("removed %x:%x\n", major
, minor
);
8506 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
);
8508 static int add_remove_disk_update(struct intel_super
*super
)
8510 int check_degraded
= 0;
8513 /* add/remove some spares to/from the metadata/contrainer */
8514 while (super
->disk_mgmt_list
) {
8515 struct dl
*disk_cfg
;
8517 disk_cfg
= super
->disk_mgmt_list
;
8518 super
->disk_mgmt_list
= disk_cfg
->next
;
8519 disk_cfg
->next
= NULL
;
8521 if (disk_cfg
->action
== DISK_ADD
) {
8522 disk_cfg
->next
= super
->disks
;
8523 super
->disks
= disk_cfg
;
8525 dprintf("added %x:%x\n",
8526 disk_cfg
->major
, disk_cfg
->minor
);
8527 } else if (disk_cfg
->action
== DISK_REMOVE
) {
8528 dprintf("Disk remove action processed: %x.%x\n",
8529 disk_cfg
->major
, disk_cfg
->minor
);
8530 disk
= get_disk_super(super
,
8534 /* store action status */
8535 disk
->action
= DISK_REMOVE
;
8536 /* remove spare disks only */
8537 if (disk
->index
== -1) {
8538 remove_disk_super(super
,
8543 /* release allocate disk structure */
8544 __free_imsm_disk(disk_cfg
);
8547 return check_degraded
;
8550 static int apply_reshape_migration_update(struct imsm_update_reshape_migration
*u
,
8551 struct intel_super
*super
,
8554 struct intel_dev
*id
;
8555 void **tofree
= NULL
;
8558 dprintf("(enter)\n");
8559 if (u
->subdev
< 0 || u
->subdev
> 1) {
8560 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
8563 if (space_list
== NULL
|| *space_list
== NULL
) {
8564 dprintf("imsm: Error: Memory is not allocated\n");
8568 for (id
= super
->devlist
; id
; id
= id
->next
) {
8569 if (id
->index
== (unsigned)u
->subdev
) {
8570 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
8571 struct imsm_map
*map
;
8572 struct imsm_dev
*new_dev
=
8573 (struct imsm_dev
*)*space_list
;
8574 struct imsm_map
*migr_map
= get_imsm_map(dev
, MAP_1
);
8576 struct dl
*new_disk
;
8578 if (new_dev
== NULL
)
8580 *space_list
= **space_list
;
8581 memcpy(new_dev
, dev
, sizeof_imsm_dev(dev
, 0));
8582 map
= get_imsm_map(new_dev
, MAP_0
);
8584 dprintf("imsm: Error: migration in progress");
8588 to_state
= map
->map_state
;
8589 if ((u
->new_level
== 5) && (map
->raid_level
== 0)) {
8591 /* this should not happen */
8592 if (u
->new_disks
[0] < 0) {
8593 map
->failed_disk_num
=
8594 map
->num_members
- 1;
8595 to_state
= IMSM_T_STATE_DEGRADED
;
8597 to_state
= IMSM_T_STATE_NORMAL
;
8599 migrate(new_dev
, super
, to_state
, MIGR_GEN_MIGR
);
8600 if (u
->new_level
> -1)
8601 map
->raid_level
= u
->new_level
;
8602 migr_map
= get_imsm_map(new_dev
, MAP_1
);
8603 if ((u
->new_level
== 5) &&
8604 (migr_map
->raid_level
== 0)) {
8605 int ord
= map
->num_members
- 1;
8606 migr_map
->num_members
--;
8607 if (u
->new_disks
[0] < 0)
8608 ord
|= IMSM_ORD_REBUILD
;
8609 set_imsm_ord_tbl_ent(map
,
8610 map
->num_members
- 1,
8614 tofree
= (void **)dev
;
8616 /* update chunk size
8618 if (u
->new_chunksize
> 0) {
8619 unsigned long long num_data_stripes
;
8621 imsm_num_data_members(dev
, MAP_0
);
8623 if (used_disks
== 0)
8626 map
->blocks_per_strip
=
8627 __cpu_to_le16(u
->new_chunksize
* 2);
8629 (join_u32(dev
->size_low
, dev
->size_high
)
8631 num_data_stripes
/= map
->blocks_per_strip
;
8632 num_data_stripes
/= map
->num_domains
;
8633 set_num_data_stripes(map
, num_data_stripes
);
8638 if (u
->new_level
!= 5 || migr_map
->raid_level
!= 0 ||
8639 migr_map
->raid_level
== map
->raid_level
)
8642 if (u
->new_disks
[0] >= 0) {
8645 new_disk
= get_disk_super(super
,
8646 major(u
->new_disks
[0]),
8647 minor(u
->new_disks
[0]));
8648 dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n",
8649 major(u
->new_disks
[0]),
8650 minor(u
->new_disks
[0]),
8651 new_disk
, new_disk
->index
);
8652 if (new_disk
== NULL
)
8653 goto error_disk_add
;
8655 new_disk
->index
= map
->num_members
- 1;
8656 /* slot to fill in autolayout
8658 new_disk
->raiddisk
= new_disk
->index
;
8659 new_disk
->disk
.status
|= CONFIGURED_DISK
;
8660 new_disk
->disk
.status
&= ~SPARE_DISK
;
8662 goto error_disk_add
;
8665 *tofree
= *space_list
;
8666 /* calculate new size
8668 imsm_set_array_size(new_dev
, -1);
8675 *space_list
= tofree
;
8679 dprintf("Error: imsm: Cannot find disk.\n");
8683 static int apply_size_change_update(struct imsm_update_size_change
*u
,
8684 struct intel_super
*super
)
8686 struct intel_dev
*id
;
8689 dprintf("(enter)\n");
8690 if (u
->subdev
< 0 || u
->subdev
> 1) {
8691 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
8695 for (id
= super
->devlist
; id
; id
= id
->next
) {
8696 if (id
->index
== (unsigned)u
->subdev
) {
8697 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
8698 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8699 int used_disks
= imsm_num_data_members(dev
, MAP_0
);
8700 unsigned long long blocks_per_member
;
8701 unsigned long long num_data_stripes
;
8703 /* calculate new size
8705 blocks_per_member
= u
->new_size
/ used_disks
;
8706 num_data_stripes
= blocks_per_member
/
8707 map
->blocks_per_strip
;
8708 num_data_stripes
/= map
->num_domains
;
8709 dprintf("(size: %llu, blocks per member: %llu, num_data_stipes: %llu)\n",
8710 u
->new_size
, blocks_per_member
,
8712 set_blocks_per_member(map
, blocks_per_member
);
8713 set_num_data_stripes(map
, num_data_stripes
);
8714 imsm_set_array_size(dev
, u
->new_size
);
8724 static int apply_update_activate_spare(struct imsm_update_activate_spare
*u
,
8725 struct intel_super
*super
,
8726 struct active_array
*active_array
)
8728 struct imsm_super
*mpb
= super
->anchor
;
8729 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->array
);
8730 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8731 struct imsm_map
*migr_map
;
8732 struct active_array
*a
;
8733 struct imsm_disk
*disk
;
8740 int second_map_created
= 0;
8742 for (; u
; u
= u
->next
) {
8743 victim
= get_imsm_disk_idx(dev
, u
->slot
, MAP_X
);
8748 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
8753 pr_err("error: imsm_activate_spare passed an unknown disk (index: %d)\n",
8758 /* count failures (excluding rebuilds and the victim)
8759 * to determine map[0] state
8762 for (i
= 0; i
< map
->num_members
; i
++) {
8765 disk
= get_imsm_disk(super
,
8766 get_imsm_disk_idx(dev
, i
, MAP_X
));
8767 if (!disk
|| is_failed(disk
))
8771 /* adding a pristine spare, assign a new index */
8772 if (dl
->index
< 0) {
8773 dl
->index
= super
->anchor
->num_disks
;
8774 super
->anchor
->num_disks
++;
8777 disk
->status
|= CONFIGURED_DISK
;
8778 disk
->status
&= ~SPARE_DISK
;
8781 to_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
8782 if (!second_map_created
) {
8783 second_map_created
= 1;
8784 map
->map_state
= IMSM_T_STATE_DEGRADED
;
8785 migrate(dev
, super
, to_state
, MIGR_REBUILD
);
8787 map
->map_state
= to_state
;
8788 migr_map
= get_imsm_map(dev
, MAP_1
);
8789 set_imsm_ord_tbl_ent(map
, u
->slot
, dl
->index
);
8790 set_imsm_ord_tbl_ent(migr_map
, u
->slot
,
8791 dl
->index
| IMSM_ORD_REBUILD
);
8793 /* update the family_num to mark a new container
8794 * generation, being careful to record the existing
8795 * family_num in orig_family_num to clean up after
8796 * earlier mdadm versions that neglected to set it.
8798 if (mpb
->orig_family_num
== 0)
8799 mpb
->orig_family_num
= mpb
->family_num
;
8800 mpb
->family_num
+= super
->random
;
8802 /* count arrays using the victim in the metadata */
8804 for (a
= active_array
; a
; a
= a
->next
) {
8805 dev
= get_imsm_dev(super
, a
->info
.container_member
);
8806 map
= get_imsm_map(dev
, MAP_0
);
8808 if (get_imsm_disk_slot(map
, victim
) >= 0)
8812 /* delete the victim if it is no longer being
8818 /* We know that 'manager' isn't touching anything,
8819 * so it is safe to delete
8821 for (dlp
= &super
->disks
; *dlp
; dlp
= &(*dlp
)->next
)
8822 if ((*dlp
)->index
== victim
)
8825 /* victim may be on the missing list */
8827 for (dlp
= &super
->missing
; *dlp
;
8828 dlp
= &(*dlp
)->next
)
8829 if ((*dlp
)->index
== victim
)
8831 imsm_delete(super
, dlp
, victim
);
8838 static int apply_reshape_container_disks_update(struct imsm_update_reshape
*u
,
8839 struct intel_super
*super
,
8842 struct dl
*new_disk
;
8843 struct intel_dev
*id
;
8845 int delta_disks
= u
->new_raid_disks
- u
->old_raid_disks
;
8846 int disk_count
= u
->old_raid_disks
;
8847 void **tofree
= NULL
;
8848 int devices_to_reshape
= 1;
8849 struct imsm_super
*mpb
= super
->anchor
;
8851 unsigned int dev_id
;
8853 dprintf("(enter)\n");
8855 /* enable spares to use in array */
8856 for (i
= 0; i
< delta_disks
; i
++) {
8857 new_disk
= get_disk_super(super
,
8858 major(u
->new_disks
[i
]),
8859 minor(u
->new_disks
[i
]));
8860 dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n",
8861 major(u
->new_disks
[i
]), minor(u
->new_disks
[i
]),
8862 new_disk
, new_disk
->index
);
8863 if (new_disk
== NULL
||
8864 (new_disk
->index
>= 0 &&
8865 new_disk
->index
< u
->old_raid_disks
))
8866 goto update_reshape_exit
;
8867 new_disk
->index
= disk_count
++;
8868 /* slot to fill in autolayout
8870 new_disk
->raiddisk
= new_disk
->index
;
8871 new_disk
->disk
.status
|=
8873 new_disk
->disk
.status
&= ~SPARE_DISK
;
8876 dprintf("imsm: volume set mpb->num_raid_devs = %i\n",
8877 mpb
->num_raid_devs
);
8878 /* manage changes in volume
8880 for (dev_id
= 0; dev_id
< mpb
->num_raid_devs
; dev_id
++) {
8881 void **sp
= *space_list
;
8882 struct imsm_dev
*newdev
;
8883 struct imsm_map
*newmap
, *oldmap
;
8885 for (id
= super
->devlist
; id
; id
= id
->next
) {
8886 if (id
->index
== dev_id
)
8895 /* Copy the dev, but not (all of) the map */
8896 memcpy(newdev
, id
->dev
, sizeof(*newdev
));
8897 oldmap
= get_imsm_map(id
->dev
, MAP_0
);
8898 newmap
= get_imsm_map(newdev
, MAP_0
);
8899 /* Copy the current map */
8900 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
8901 /* update one device only
8903 if (devices_to_reshape
) {
8904 dprintf("imsm: modifying subdev: %i\n",
8906 devices_to_reshape
--;
8907 newdev
->vol
.migr_state
= 1;
8908 newdev
->vol
.curr_migr_unit
= 0;
8909 set_migr_type(newdev
, MIGR_GEN_MIGR
);
8910 newmap
->num_members
= u
->new_raid_disks
;
8911 for (i
= 0; i
< delta_disks
; i
++) {
8912 set_imsm_ord_tbl_ent(newmap
,
8913 u
->old_raid_disks
+ i
,
8914 u
->old_raid_disks
+ i
);
8916 /* New map is correct, now need to save old map
8918 newmap
= get_imsm_map(newdev
, MAP_1
);
8919 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
8921 imsm_set_array_size(newdev
, -1);
8924 sp
= (void **)id
->dev
;
8929 /* Clear migration record */
8930 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
8933 *space_list
= tofree
;
8936 update_reshape_exit
:
8941 static int apply_takeover_update(struct imsm_update_takeover
*u
,
8942 struct intel_super
*super
,
8945 struct imsm_dev
*dev
= NULL
;
8946 struct intel_dev
*dv
;
8947 struct imsm_dev
*dev_new
;
8948 struct imsm_map
*map
;
8952 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
8953 if (dv
->index
== (unsigned int)u
->subarray
) {
8961 map
= get_imsm_map(dev
, MAP_0
);
8963 if (u
->direction
== R10_TO_R0
) {
8964 unsigned long long num_data_stripes
;
8966 map
->num_domains
= 1;
8967 num_data_stripes
= blocks_per_member(map
);
8968 num_data_stripes
/= map
->blocks_per_strip
;
8969 num_data_stripes
/= map
->num_domains
;
8970 set_num_data_stripes(map
, num_data_stripes
);
8972 /* Number of failed disks must be half of initial disk number */
8973 if (imsm_count_failed(super
, dev
, MAP_0
) !=
8974 (map
->num_members
/ 2))
8977 /* iterate through devices to mark removed disks as spare */
8978 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
8979 if (dm
->disk
.status
& FAILED_DISK
) {
8980 int idx
= dm
->index
;
8981 /* update indexes on the disk list */
8982 /* FIXME this loop-with-the-loop looks wrong, I'm not convinced
8983 the index values will end up being correct.... NB */
8984 for (du
= super
->disks
; du
; du
= du
->next
)
8985 if (du
->index
> idx
)
8987 /* mark as spare disk */
8992 map
->num_members
= map
->num_members
/ 2;
8993 map
->map_state
= IMSM_T_STATE_NORMAL
;
8994 map
->num_domains
= 1;
8995 map
->raid_level
= 0;
8996 map
->failed_disk_num
= -1;
8999 if (u
->direction
== R0_TO_R10
) {
9001 /* update slots in current disk list */
9002 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
9006 /* create new *missing* disks */
9007 for (i
= 0; i
< map
->num_members
; i
++) {
9008 space
= *space_list
;
9011 *space_list
= *space
;
9013 memcpy(du
, super
->disks
, sizeof(*du
));
9017 du
->index
= (i
* 2) + 1;
9018 sprintf((char *)du
->disk
.serial
,
9019 " MISSING_%d", du
->index
);
9020 sprintf((char *)du
->serial
,
9021 "MISSING_%d", du
->index
);
9022 du
->next
= super
->missing
;
9023 super
->missing
= du
;
9025 /* create new dev and map */
9026 space
= *space_list
;
9029 *space_list
= *space
;
9030 dev_new
= (void *)space
;
9031 memcpy(dev_new
, dev
, sizeof(*dev
));
9032 /* update new map */
9033 map
= get_imsm_map(dev_new
, MAP_0
);
9034 map
->num_members
= map
->num_members
* 2;
9035 map
->map_state
= IMSM_T_STATE_DEGRADED
;
9036 map
->num_domains
= 2;
9037 map
->raid_level
= 1;
9038 /* replace dev<->dev_new */
9041 /* update disk order table */
9042 for (du
= super
->disks
; du
; du
= du
->next
)
9044 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
9045 for (du
= super
->missing
; du
; du
= du
->next
)
9046 if (du
->index
>= 0) {
9047 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
9048 mark_missing(super
, dv
->dev
, &du
->disk
, du
->index
);
9054 static void imsm_process_update(struct supertype
*st
,
9055 struct metadata_update
*update
)
9058 * crack open the metadata_update envelope to find the update record
9059 * update can be one of:
9060 * update_reshape_container_disks - all the arrays in the container
9061 * are being reshaped to have more devices. We need to mark
9062 * the arrays for general migration and convert selected spares
9063 * into active devices.
9064 * update_activate_spare - a spare device has replaced a failed
9065 * device in an array, update the disk_ord_tbl. If this disk is
9066 * present in all member arrays then also clear the SPARE_DISK
9068 * update_create_array
9070 * update_rename_array
9071 * update_add_remove_disk
9073 struct intel_super
*super
= st
->sb
;
9074 struct imsm_super
*mpb
;
9075 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
9077 /* update requires a larger buf but the allocation failed */
9078 if (super
->next_len
&& !super
->next_buf
) {
9079 super
->next_len
= 0;
9083 if (super
->next_buf
) {
9084 memcpy(super
->next_buf
, super
->buf
, super
->len
);
9086 super
->len
= super
->next_len
;
9087 super
->buf
= super
->next_buf
;
9089 super
->next_len
= 0;
9090 super
->next_buf
= NULL
;
9093 mpb
= super
->anchor
;
9096 case update_general_migration_checkpoint
: {
9097 struct intel_dev
*id
;
9098 struct imsm_update_general_migration_checkpoint
*u
=
9099 (void *)update
->buf
;
9101 dprintf("called for update_general_migration_checkpoint\n");
9103 /* find device under general migration */
9104 for (id
= super
->devlist
; id
; id
= id
->next
) {
9105 if (is_gen_migration(id
->dev
)) {
9106 id
->dev
->vol
.curr_migr_unit
=
9107 __cpu_to_le32(u
->curr_migr_unit
);
9108 super
->updates_pending
++;
9113 case update_takeover
: {
9114 struct imsm_update_takeover
*u
= (void *)update
->buf
;
9115 if (apply_takeover_update(u
, super
, &update
->space_list
)) {
9116 imsm_update_version_info(super
);
9117 super
->updates_pending
++;
9122 case update_reshape_container_disks
: {
9123 struct imsm_update_reshape
*u
= (void *)update
->buf
;
9124 if (apply_reshape_container_disks_update(
9125 u
, super
, &update
->space_list
))
9126 super
->updates_pending
++;
9129 case update_reshape_migration
: {
9130 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
9131 if (apply_reshape_migration_update(
9132 u
, super
, &update
->space_list
))
9133 super
->updates_pending
++;
9136 case update_size_change
: {
9137 struct imsm_update_size_change
*u
= (void *)update
->buf
;
9138 if (apply_size_change_update(u
, super
))
9139 super
->updates_pending
++;
9142 case update_activate_spare
: {
9143 struct imsm_update_activate_spare
*u
= (void *) update
->buf
;
9144 if (apply_update_activate_spare(u
, super
, st
->arrays
))
9145 super
->updates_pending
++;
9148 case update_create_array
: {
9149 /* someone wants to create a new array, we need to be aware of
9150 * a few races/collisions:
9151 * 1/ 'Create' called by two separate instances of mdadm
9152 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
9153 * devices that have since been assimilated via
9155 * In the event this update can not be carried out mdadm will
9156 * (FIX ME) notice that its update did not take hold.
9158 struct imsm_update_create_array
*u
= (void *) update
->buf
;
9159 struct intel_dev
*dv
;
9160 struct imsm_dev
*dev
;
9161 struct imsm_map
*map
, *new_map
;
9162 unsigned long long start
, end
;
9163 unsigned long long new_start
, new_end
;
9165 struct disk_info
*inf
;
9168 /* handle racing creates: first come first serve */
9169 if (u
->dev_idx
< mpb
->num_raid_devs
) {
9170 dprintf("subarray %d already defined\n", u
->dev_idx
);
9174 /* check update is next in sequence */
9175 if (u
->dev_idx
!= mpb
->num_raid_devs
) {
9176 dprintf("can not create array %d expected index %d\n",
9177 u
->dev_idx
, mpb
->num_raid_devs
);
9181 new_map
= get_imsm_map(&u
->dev
, MAP_0
);
9182 new_start
= pba_of_lba0(new_map
);
9183 new_end
= new_start
+ blocks_per_member(new_map
);
9184 inf
= get_disk_info(u
);
9186 /* handle activate_spare versus create race:
9187 * check to make sure that overlapping arrays do not include
9190 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
9191 dev
= get_imsm_dev(super
, i
);
9192 map
= get_imsm_map(dev
, MAP_0
);
9193 start
= pba_of_lba0(map
);
9194 end
= start
+ blocks_per_member(map
);
9195 if ((new_start
>= start
&& new_start
<= end
) ||
9196 (start
>= new_start
&& start
<= new_end
))
9201 if (disks_overlap(super
, i
, u
)) {
9202 dprintf("arrays overlap\n");
9207 /* check that prepare update was successful */
9208 if (!update
->space
) {
9209 dprintf("prepare update failed\n");
9213 /* check that all disks are still active before committing
9214 * changes. FIXME: could we instead handle this by creating a
9215 * degraded array? That's probably not what the user expects,
9216 * so better to drop this update on the floor.
9218 for (i
= 0; i
< new_map
->num_members
; i
++) {
9219 dl
= serial_to_dl(inf
[i
].serial
, super
);
9221 dprintf("disk disappeared\n");
9226 super
->updates_pending
++;
9228 /* convert spares to members and fixup ord_tbl */
9229 for (i
= 0; i
< new_map
->num_members
; i
++) {
9230 dl
= serial_to_dl(inf
[i
].serial
, super
);
9231 if (dl
->index
== -1) {
9232 dl
->index
= mpb
->num_disks
;
9234 dl
->disk
.status
|= CONFIGURED_DISK
;
9235 dl
->disk
.status
&= ~SPARE_DISK
;
9237 set_imsm_ord_tbl_ent(new_map
, i
, dl
->index
);
9242 update
->space
= NULL
;
9243 imsm_copy_dev(dev
, &u
->dev
);
9244 dv
->index
= u
->dev_idx
;
9245 dv
->next
= super
->devlist
;
9246 super
->devlist
= dv
;
9247 mpb
->num_raid_devs
++;
9249 imsm_update_version_info(super
);
9252 /* mdmon knows how to release update->space, but not
9253 * ((struct intel_dev *) update->space)->dev
9255 if (update
->space
) {
9261 case update_kill_array
: {
9262 struct imsm_update_kill_array
*u
= (void *) update
->buf
;
9263 int victim
= u
->dev_idx
;
9264 struct active_array
*a
;
9265 struct intel_dev
**dp
;
9266 struct imsm_dev
*dev
;
9268 /* sanity check that we are not affecting the uuid of
9269 * active arrays, or deleting an active array
9271 * FIXME when immutable ids are available, but note that
9272 * we'll also need to fixup the invalidated/active
9273 * subarray indexes in mdstat
9275 for (a
= st
->arrays
; a
; a
= a
->next
)
9276 if (a
->info
.container_member
>= victim
)
9278 /* by definition if mdmon is running at least one array
9279 * is active in the container, so checking
9280 * mpb->num_raid_devs is just extra paranoia
9282 dev
= get_imsm_dev(super
, victim
);
9283 if (a
|| !dev
|| mpb
->num_raid_devs
== 1) {
9284 dprintf("failed to delete subarray-%d\n", victim
);
9288 for (dp
= &super
->devlist
; *dp
;)
9289 if ((*dp
)->index
== (unsigned)super
->current_vol
) {
9292 if ((*dp
)->index
> (unsigned)victim
)
9296 mpb
->num_raid_devs
--;
9297 super
->updates_pending
++;
9300 case update_rename_array
: {
9301 struct imsm_update_rename_array
*u
= (void *) update
->buf
;
9302 char name
[MAX_RAID_SERIAL_LEN
+1];
9303 int target
= u
->dev_idx
;
9304 struct active_array
*a
;
9305 struct imsm_dev
*dev
;
9307 /* sanity check that we are not affecting the uuid of
9310 snprintf(name
, MAX_RAID_SERIAL_LEN
, "%s", (char *) u
->name
);
9311 name
[MAX_RAID_SERIAL_LEN
] = '\0';
9312 for (a
= st
->arrays
; a
; a
= a
->next
)
9313 if (a
->info
.container_member
== target
)
9315 dev
= get_imsm_dev(super
, u
->dev_idx
);
9316 if (a
|| !dev
|| !check_name(super
, name
, 1)) {
9317 dprintf("failed to rename subarray-%d\n", target
);
9321 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
9322 super
->updates_pending
++;
9325 case update_add_remove_disk
: {
9326 /* we may be able to repair some arrays if disks are
9327 * being added, check the status of add_remove_disk
9328 * if discs has been added.
9330 if (add_remove_disk_update(super
)) {
9331 struct active_array
*a
;
9333 super
->updates_pending
++;
9334 for (a
= st
->arrays
; a
; a
= a
->next
)
9335 a
->check_degraded
= 1;
9339 case update_prealloc_badblocks_mem
:
9342 pr_err("error: unsuported process update type:(type: %d)\n", type
);
9346 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
);
9348 static int imsm_prepare_update(struct supertype
*st
,
9349 struct metadata_update
*update
)
9352 * Allocate space to hold new disk entries, raid-device entries or a new
9353 * mpb if necessary. The manager synchronously waits for updates to
9354 * complete in the monitor, so new mpb buffers allocated here can be
9355 * integrated by the monitor thread without worrying about live pointers
9356 * in the manager thread.
9358 enum imsm_update_type type
;
9359 struct intel_super
*super
= st
->sb
;
9360 unsigned int sector_size
= super
->sector_size
;
9361 struct imsm_super
*mpb
= super
->anchor
;
9365 if (update
->len
< (int)sizeof(type
))
9368 type
= *(enum imsm_update_type
*) update
->buf
;
9371 case update_general_migration_checkpoint
:
9372 if (update
->len
< (int)sizeof(struct imsm_update_general_migration_checkpoint
))
9374 dprintf("called for update_general_migration_checkpoint\n");
9376 case update_takeover
: {
9377 struct imsm_update_takeover
*u
= (void *)update
->buf
;
9378 if (update
->len
< (int)sizeof(*u
))
9380 if (u
->direction
== R0_TO_R10
) {
9381 void **tail
= (void **)&update
->space_list
;
9382 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subarray
);
9383 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
9384 int num_members
= map
->num_members
;
9387 /* allocate memory for added disks */
9388 for (i
= 0; i
< num_members
; i
++) {
9389 size
= sizeof(struct dl
);
9390 space
= xmalloc(size
);
9395 /* allocate memory for new device */
9396 size
= sizeof_imsm_dev(super
->devlist
->dev
, 0) +
9397 (num_members
* sizeof(__u32
));
9398 space
= xmalloc(size
);
9402 len
= disks_to_mpb_size(num_members
* 2);
9407 case update_reshape_container_disks
: {
9408 /* Every raid device in the container is about to
9409 * gain some more devices, and we will enter a
9411 * So each 'imsm_map' will be bigger, and the imsm_vol
9412 * will now hold 2 of them.
9413 * Thus we need new 'struct imsm_dev' allocations sized
9414 * as sizeof_imsm_dev but with more devices in both maps.
9416 struct imsm_update_reshape
*u
= (void *)update
->buf
;
9417 struct intel_dev
*dl
;
9418 void **space_tail
= (void**)&update
->space_list
;
9420 if (update
->len
< (int)sizeof(*u
))
9423 dprintf("for update_reshape\n");
9425 for (dl
= super
->devlist
; dl
; dl
= dl
->next
) {
9426 int size
= sizeof_imsm_dev(dl
->dev
, 1);
9428 if (u
->new_raid_disks
> u
->old_raid_disks
)
9429 size
+= sizeof(__u32
)*2*
9430 (u
->new_raid_disks
- u
->old_raid_disks
);
9437 len
= disks_to_mpb_size(u
->new_raid_disks
);
9438 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
9441 case update_reshape_migration
: {
9442 /* for migration level 0->5 we need to add disks
9443 * so the same as for container operation we will copy
9444 * device to the bigger location.
9445 * in memory prepared device and new disk area are prepared
9446 * for usage in process update
9448 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
9449 struct intel_dev
*id
;
9450 void **space_tail
= (void **)&update
->space_list
;
9453 int current_level
= -1;
9455 if (update
->len
< (int)sizeof(*u
))
9458 dprintf("for update_reshape\n");
9460 /* add space for bigger array in update
9462 for (id
= super
->devlist
; id
; id
= id
->next
) {
9463 if (id
->index
== (unsigned)u
->subdev
) {
9464 size
= sizeof_imsm_dev(id
->dev
, 1);
9465 if (u
->new_raid_disks
> u
->old_raid_disks
)
9466 size
+= sizeof(__u32
)*2*
9467 (u
->new_raid_disks
- u
->old_raid_disks
);
9475 if (update
->space_list
== NULL
)
9478 /* add space for disk in update
9480 size
= sizeof(struct dl
);
9486 /* add spare device to update
9488 for (id
= super
->devlist
; id
; id
= id
->next
)
9489 if (id
->index
== (unsigned)u
->subdev
) {
9490 struct imsm_dev
*dev
;
9491 struct imsm_map
*map
;
9493 dev
= get_imsm_dev(super
, u
->subdev
);
9494 map
= get_imsm_map(dev
, MAP_0
);
9495 current_level
= map
->raid_level
;
9498 if (u
->new_level
== 5 && u
->new_level
!= current_level
) {
9499 struct mdinfo
*spares
;
9501 spares
= get_spares_for_grow(st
);
9509 makedev(dev
->disk
.major
,
9511 dl
= get_disk_super(super
,
9514 dl
->index
= u
->old_raid_disks
;
9520 len
= disks_to_mpb_size(u
->new_raid_disks
);
9521 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
9524 case update_size_change
: {
9525 if (update
->len
< (int)sizeof(struct imsm_update_size_change
))
9529 case update_activate_spare
: {
9530 if (update
->len
< (int)sizeof(struct imsm_update_activate_spare
))
9534 case update_create_array
: {
9535 struct imsm_update_create_array
*u
= (void *) update
->buf
;
9536 struct intel_dev
*dv
;
9537 struct imsm_dev
*dev
= &u
->dev
;
9538 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
9540 struct disk_info
*inf
;
9544 if (update
->len
< (int)sizeof(*u
))
9547 inf
= get_disk_info(u
);
9548 len
= sizeof_imsm_dev(dev
, 1);
9549 /* allocate a new super->devlist entry */
9550 dv
= xmalloc(sizeof(*dv
));
9551 dv
->dev
= xmalloc(len
);
9554 /* count how many spares will be converted to members */
9555 for (i
= 0; i
< map
->num_members
; i
++) {
9556 dl
= serial_to_dl(inf
[i
].serial
, super
);
9558 /* hmm maybe it failed?, nothing we can do about
9563 if (count_memberships(dl
, super
) == 0)
9566 len
+= activate
* sizeof(struct imsm_disk
);
9569 case update_kill_array
: {
9570 if (update
->len
< (int)sizeof(struct imsm_update_kill_array
))
9574 case update_rename_array
: {
9575 if (update
->len
< (int)sizeof(struct imsm_update_rename_array
))
9579 case update_add_remove_disk
:
9580 /* no update->len needed */
9582 case update_prealloc_badblocks_mem
:
9583 super
->extra_space
+= sizeof(struct bbm_log
) -
9584 get_imsm_bbm_log_size(super
->bbm_log
);
9590 /* check if we need a larger metadata buffer */
9591 if (super
->next_buf
)
9592 buf_len
= super
->next_len
;
9594 buf_len
= super
->len
;
9596 if (__le32_to_cpu(mpb
->mpb_size
) + super
->extra_space
+ len
> buf_len
) {
9597 /* ok we need a larger buf than what is currently allocated
9598 * if this allocation fails process_update will notice that
9599 * ->next_len is set and ->next_buf is NULL
9601 buf_len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) +
9602 super
->extra_space
+ len
, sector_size
);
9603 if (super
->next_buf
)
9604 free(super
->next_buf
);
9606 super
->next_len
= buf_len
;
9607 if (posix_memalign(&super
->next_buf
, sector_size
, buf_len
) == 0)
9608 memset(super
->next_buf
, 0, buf_len
);
9610 super
->next_buf
= NULL
;
9615 /* must be called while manager is quiesced */
9616 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
)
9618 struct imsm_super
*mpb
= super
->anchor
;
9620 struct imsm_dev
*dev
;
9621 struct imsm_map
*map
;
9622 unsigned int i
, j
, num_members
;
9624 struct bbm_log
*log
= super
->bbm_log
;
9626 dprintf("deleting device[%d] from imsm_super\n", index
);
9628 /* shift all indexes down one */
9629 for (iter
= super
->disks
; iter
; iter
= iter
->next
)
9630 if (iter
->index
> (int)index
)
9632 for (iter
= super
->missing
; iter
; iter
= iter
->next
)
9633 if (iter
->index
> (int)index
)
9636 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
9637 dev
= get_imsm_dev(super
, i
);
9638 map
= get_imsm_map(dev
, MAP_0
);
9639 num_members
= map
->num_members
;
9640 for (j
= 0; j
< num_members
; j
++) {
9641 /* update ord entries being careful not to propagate
9642 * ord-flags to the first map
9644 ord
= get_imsm_ord_tbl_ent(dev
, j
, MAP_X
);
9646 if (ord_to_idx(ord
) <= index
)
9649 map
= get_imsm_map(dev
, MAP_0
);
9650 set_imsm_ord_tbl_ent(map
, j
, ord_to_idx(ord
- 1));
9651 map
= get_imsm_map(dev
, MAP_1
);
9653 set_imsm_ord_tbl_ent(map
, j
, ord
- 1);
9657 for (i
= 0; i
< log
->entry_count
; i
++) {
9658 struct bbm_log_entry
*entry
= &log
->marked_block_entries
[i
];
9660 if (entry
->disk_ordinal
<= index
)
9662 entry
->disk_ordinal
--;
9666 super
->updates_pending
++;
9668 struct dl
*dl
= *dlp
;
9670 *dlp
= (*dlp
)->next
;
9671 __free_imsm_disk(dl
);
9674 #endif /* MDASSEMBLE */
9676 static void close_targets(int *targets
, int new_disks
)
9683 for (i
= 0; i
< new_disks
; i
++) {
9684 if (targets
[i
] >= 0) {
9691 static int imsm_get_allowed_degradation(int level
, int raid_disks
,
9692 struct intel_super
*super
,
9693 struct imsm_dev
*dev
)
9699 struct imsm_map
*map
;
9702 ret_val
= raid_disks
/2;
9703 /* check map if all disks pairs not failed
9706 map
= get_imsm_map(dev
, MAP_0
);
9707 for (i
= 0; i
< ret_val
; i
++) {
9708 int degradation
= 0;
9709 if (get_imsm_disk(super
, i
) == NULL
)
9711 if (get_imsm_disk(super
, i
+ 1) == NULL
)
9713 if (degradation
== 2)
9716 map
= get_imsm_map(dev
, MAP_1
);
9717 /* if there is no second map
9718 * result can be returned
9722 /* check degradation in second map
9724 for (i
= 0; i
< ret_val
; i
++) {
9725 int degradation
= 0;
9726 if (get_imsm_disk(super
, i
) == NULL
)
9728 if (get_imsm_disk(super
, i
+ 1) == NULL
)
9730 if (degradation
== 2)
9744 /*******************************************************************************
9745 * Function: open_backup_targets
9746 * Description: Function opens file descriptors for all devices given in
9749 * info : general array info
9750 * raid_disks : number of disks
9751 * raid_fds : table of device's file descriptors
9752 * super : intel super for raid10 degradation check
9753 * dev : intel device for raid10 degradation check
9757 ******************************************************************************/
9758 int open_backup_targets(struct mdinfo
*info
, int raid_disks
, int *raid_fds
,
9759 struct intel_super
*super
, struct imsm_dev
*dev
)
9765 for (i
= 0; i
< raid_disks
; i
++)
9768 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
9771 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
)) {
9772 dprintf("disk is faulty!!\n");
9776 if (sd
->disk
.raid_disk
>= raid_disks
|| sd
->disk
.raid_disk
< 0)
9779 dn
= map_dev(sd
->disk
.major
,
9781 raid_fds
[sd
->disk
.raid_disk
] = dev_open(dn
, O_RDWR
);
9782 if (raid_fds
[sd
->disk
.raid_disk
] < 0) {
9783 pr_err("cannot open component\n");
9788 /* check if maximum array degradation level is not exceeded
9790 if ((raid_disks
- opened
) >
9791 imsm_get_allowed_degradation(info
->new_level
, raid_disks
,
9793 pr_err("Not enough disks can be opened.\n");
9794 close_targets(raid_fds
, raid_disks
);
9800 /*******************************************************************************
9801 * Function: validate_container_imsm
9802 * Description: This routine validates container after assemble,
9803 * eg. if devices in container are under the same controller.
9806 * info : linked list with info about devices used in array
9810 ******************************************************************************/
9811 int validate_container_imsm(struct mdinfo
*info
)
9813 if (check_env("IMSM_NO_PLATFORM"))
9816 struct sys_dev
*idev
;
9817 struct sys_dev
*hba
= NULL
;
9818 struct sys_dev
*intel_devices
= find_intel_devices();
9819 char *dev_path
= devt_to_devpath(makedev(info
->disk
.major
,
9822 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
9823 if (dev_path
&& strstr(dev_path
, idev
->path
)) {
9832 pr_err("WARNING - Cannot detect HBA for device %s!\n",
9833 devid2kname(makedev(info
->disk
.major
, info
->disk
.minor
)));
9837 const struct imsm_orom
*orom
= get_orom_by_device_id(hba
->dev_id
);
9840 for (dev
= info
->next
; dev
; dev
= dev
->next
) {
9841 dev_path
= devt_to_devpath(makedev(dev
->disk
.major
, dev
->disk
.minor
));
9843 struct sys_dev
*hba2
= NULL
;
9844 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
9845 if (dev_path
&& strstr(dev_path
, idev
->path
)) {
9853 const struct imsm_orom
*orom2
= hba2
== NULL
? NULL
:
9854 get_orom_by_device_id(hba2
->dev_id
);
9856 if (hba2
&& hba
->type
!= hba2
->type
) {
9857 pr_err("WARNING - HBAs of devices do not match %s != %s\n",
9858 get_sys_dev_type(hba
->type
), get_sys_dev_type(hba2
->type
));
9862 if (orom
!= orom2
) {
9863 pr_err("WARNING - IMSM container assembled with disks under different HBAs!\n"
9864 " This operation is not supported and can lead to data loss.\n");
9869 pr_err("WARNING - IMSM container assembled with disks under HBAs without IMSM platform support!\n"
9870 " This operation is not supported and can lead to data loss.\n");
9878 /*******************************************************************************
9879 * Function: imsm_record_badblock
9880 * Description: This routine stores new bad block record in BBM log
9883 * a : array containing a bad block
9884 * slot : disk number containing a bad block
9885 * sector : bad block sector
9886 * length : bad block sectors range
9890 ******************************************************************************/
9891 static int imsm_record_badblock(struct active_array
*a
, int slot
,
9892 unsigned long long sector
, int length
)
9894 struct intel_super
*super
= a
->container
->sb
;
9898 ord
= imsm_disk_slot_to_ord(a
, slot
);
9902 ret
= record_new_badblock(super
->bbm_log
, ord_to_idx(ord
), sector
,
9905 super
->updates_pending
++;
9909 /*******************************************************************************
9910 * Function: imsm_clear_badblock
9911 * Description: This routine clears bad block record from BBM log
9914 * a : array containing a bad block
9915 * slot : disk number containing a bad block
9916 * sector : bad block sector
9917 * length : bad block sectors range
9921 ******************************************************************************/
9922 static int imsm_clear_badblock(struct active_array
*a
, int slot
,
9923 unsigned long long sector
, int length
)
9925 struct intel_super
*super
= a
->container
->sb
;
9929 ord
= imsm_disk_slot_to_ord(a
, slot
);
9933 ret
= clear_badblock(super
->bbm_log
, ord_to_idx(ord
), sector
, length
);
9935 super
->updates_pending
++;
9939 /*******************************************************************************
9940 * Function: imsm_get_badblocks
9941 * Description: This routine get list of bad blocks for an array
9945 * slot : disk number
9947 * bb : structure containing bad blocks
9949 ******************************************************************************/
9950 static struct md_bb
*imsm_get_badblocks(struct active_array
*a
, int slot
)
9952 int inst
= a
->info
.container_member
;
9953 struct intel_super
*super
= a
->container
->sb
;
9954 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
9955 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
9958 ord
= imsm_disk_slot_to_ord(a
, slot
);
9962 get_volume_badblocks(super
->bbm_log
, ord_to_idx(ord
), pba_of_lba0(map
),
9963 blocks_per_member(map
), &super
->bb
);
9967 /*******************************************************************************
9968 * Function: examine_badblocks_imsm
9969 * Description: Prints list of bad blocks on a disk to the standard output
9972 * st : metadata handler
9973 * fd : open file descriptor for device
9974 * devname : device name
9978 ******************************************************************************/
9979 static int examine_badblocks_imsm(struct supertype
*st
, int fd
, char *devname
)
9981 struct intel_super
*super
= st
->sb
;
9982 struct bbm_log
*log
= super
->bbm_log
;
9983 struct dl
*d
= NULL
;
9986 for (d
= super
->disks
; d
; d
= d
->next
) {
9987 if (strcmp(d
->devname
, devname
) == 0)
9991 if ((d
== NULL
) || (d
->index
< 0)) { /* serial mismatch probably */
9992 pr_err("%s doesn't appear to be part of a raid array\n",
9999 struct bbm_log_entry
*entry
= &log
->marked_block_entries
[0];
10001 for (i
= 0; i
< log
->entry_count
; i
++) {
10002 if (entry
[i
].disk_ordinal
== d
->index
) {
10003 unsigned long long sector
= __le48_to_cpu(
10004 &entry
[i
].defective_block_start
);
10005 int cnt
= entry
[i
].marked_count
+ 1;
10008 printf("Bad-blocks on %s:\n", devname
);
10012 printf("%20llu for %d sectors\n", sector
, cnt
);
10018 printf("No bad-blocks list configured on %s\n", devname
);
10022 /*******************************************************************************
10023 * Function: init_migr_record_imsm
10024 * Description: Function inits imsm migration record
10026 * super : imsm internal array info
10027 * dev : device under migration
10028 * info : general array info to find the smallest device
10031 ******************************************************************************/
10032 void init_migr_record_imsm(struct supertype
*st
, struct imsm_dev
*dev
,
10033 struct mdinfo
*info
)
10035 struct intel_super
*super
= st
->sb
;
10036 struct migr_record
*migr_rec
= super
->migr_rec
;
10037 int new_data_disks
;
10038 unsigned long long dsize
, dev_sectors
;
10039 long long unsigned min_dev_sectors
= -1LLU;
10043 struct imsm_map
*map_dest
= get_imsm_map(dev
, MAP_0
);
10044 struct imsm_map
*map_src
= get_imsm_map(dev
, MAP_1
);
10045 unsigned long long num_migr_units
;
10046 unsigned long long array_blocks
;
10048 memset(migr_rec
, 0, sizeof(struct migr_record
));
10049 migr_rec
->family_num
= __cpu_to_le32(super
->anchor
->family_num
);
10051 /* only ascending reshape supported now */
10052 migr_rec
->ascending_migr
= __cpu_to_le32(1);
10054 migr_rec
->dest_depth_per_unit
= GEN_MIGR_AREA_SIZE
/
10055 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
10056 migr_rec
->dest_depth_per_unit
*=
10057 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
10058 new_data_disks
= imsm_num_data_members(dev
, MAP_0
);
10059 migr_rec
->blocks_per_unit
=
10060 __cpu_to_le32(migr_rec
->dest_depth_per_unit
* new_data_disks
);
10061 migr_rec
->dest_depth_per_unit
=
10062 __cpu_to_le32(migr_rec
->dest_depth_per_unit
);
10063 array_blocks
= info
->component_size
* new_data_disks
;
10065 array_blocks
/ __le32_to_cpu(migr_rec
->blocks_per_unit
);
10067 if (array_blocks
% __le32_to_cpu(migr_rec
->blocks_per_unit
))
10069 migr_rec
->num_migr_units
= __cpu_to_le32(num_migr_units
);
10071 migr_rec
->post_migr_vol_cap
= dev
->size_low
;
10072 migr_rec
->post_migr_vol_cap_hi
= dev
->size_high
;
10074 /* Find the smallest dev */
10075 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
10076 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
10077 fd
= dev_open(nm
, O_RDONLY
);
10080 get_dev_size(fd
, NULL
, &dsize
);
10081 dev_sectors
= dsize
/ 512;
10082 if (dev_sectors
< min_dev_sectors
)
10083 min_dev_sectors
= dev_sectors
;
10086 migr_rec
->ckpt_area_pba
= __cpu_to_le32(min_dev_sectors
-
10087 RAID_DISK_RESERVED_BLOCKS_IMSM_HI
);
10089 write_imsm_migr_rec(st
);
10094 /*******************************************************************************
10095 * Function: save_backup_imsm
10096 * Description: Function saves critical data stripes to Migration Copy Area
10097 * and updates the current migration unit status.
10098 * Use restore_stripes() to form a destination stripe,
10099 * and to write it to the Copy Area.
10101 * st : supertype information
10102 * dev : imsm device that backup is saved for
10103 * info : general array info
10104 * buf : input buffer
10105 * length : length of data to backup (blocks_per_unit)
10109 ******************************************************************************/
10110 int save_backup_imsm(struct supertype
*st
,
10111 struct imsm_dev
*dev
,
10112 struct mdinfo
*info
,
10117 struct intel_super
*super
= st
->sb
;
10118 unsigned long long *target_offsets
;
10121 struct imsm_map
*map_dest
= get_imsm_map(dev
, MAP_0
);
10122 int new_disks
= map_dest
->num_members
;
10123 int dest_layout
= 0;
10125 unsigned long long start
;
10126 int data_disks
= imsm_num_data_members(dev
, MAP_0
);
10128 targets
= xmalloc(new_disks
* sizeof(int));
10130 for (i
= 0; i
< new_disks
; i
++)
10133 target_offsets
= xcalloc(new_disks
, sizeof(unsigned long long));
10135 start
= info
->reshape_progress
* 512;
10136 for (i
= 0; i
< new_disks
; i
++) {
10137 target_offsets
[i
] = (unsigned long long)
10138 __le32_to_cpu(super
->migr_rec
->ckpt_area_pba
) * 512;
10139 /* move back copy area adderss, it will be moved forward
10140 * in restore_stripes() using start input variable
10142 target_offsets
[i
] -= start
/data_disks
;
10145 if (open_backup_targets(info
, new_disks
, targets
,
10149 dest_layout
= imsm_level_to_layout(map_dest
->raid_level
);
10150 dest_chunk
= __le16_to_cpu(map_dest
->blocks_per_strip
) * 512;
10152 if (restore_stripes(targets
, /* list of dest devices */
10153 target_offsets
, /* migration record offsets */
10156 map_dest
->raid_level
,
10158 -1, /* source backup file descriptor */
10159 0, /* input buf offset
10160 * always 0 buf is already offseted */
10164 pr_err("Error restoring stripes\n");
10172 close_targets(targets
, new_disks
);
10175 free(target_offsets
);
10180 /*******************************************************************************
10181 * Function: save_checkpoint_imsm
10182 * Description: Function called for current unit status update
10183 * in the migration record. It writes it to disk.
10185 * super : imsm internal array info
10186 * info : general array info
10190 * 2: failure, means no valid migration record
10191 * / no general migration in progress /
10192 ******************************************************************************/
10193 int save_checkpoint_imsm(struct supertype
*st
, struct mdinfo
*info
, int state
)
10195 struct intel_super
*super
= st
->sb
;
10196 unsigned long long blocks_per_unit
;
10197 unsigned long long curr_migr_unit
;
10199 if (load_imsm_migr_rec(super
, info
) != 0) {
10200 dprintf("imsm: ERROR: Cannot read migration record for checkpoint save.\n");
10204 blocks_per_unit
= __le32_to_cpu(super
->migr_rec
->blocks_per_unit
);
10205 if (blocks_per_unit
== 0) {
10206 dprintf("imsm: no migration in progress.\n");
10209 curr_migr_unit
= info
->reshape_progress
/ blocks_per_unit
;
10210 /* check if array is alligned to copy area
10211 * if it is not alligned, add one to current migration unit value
10212 * this can happend on array reshape finish only
10214 if (info
->reshape_progress
% blocks_per_unit
)
10217 super
->migr_rec
->curr_migr_unit
=
10218 __cpu_to_le32(curr_migr_unit
);
10219 super
->migr_rec
->rec_status
= __cpu_to_le32(state
);
10220 super
->migr_rec
->dest_1st_member_lba
=
10221 __cpu_to_le32(curr_migr_unit
*
10222 __le32_to_cpu(super
->migr_rec
->dest_depth_per_unit
));
10223 if (write_imsm_migr_rec(st
) < 0) {
10224 dprintf("imsm: Cannot write migration record outside backup area\n");
10231 /*******************************************************************************
10232 * Function: recover_backup_imsm
10233 * Description: Function recovers critical data from the Migration Copy Area
10234 * while assembling an array.
10236 * super : imsm internal array info
10237 * info : general array info
10239 * 0 : success (or there is no data to recover)
10241 ******************************************************************************/
10242 int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
)
10244 struct intel_super
*super
= st
->sb
;
10245 struct migr_record
*migr_rec
= super
->migr_rec
;
10246 struct imsm_map
*map_dest
;
10247 struct intel_dev
*id
= NULL
;
10248 unsigned long long read_offset
;
10249 unsigned long long write_offset
;
10251 int *targets
= NULL
;
10252 int new_disks
, i
, err
;
10255 unsigned int sector_size
= super
->sector_size
;
10256 unsigned long curr_migr_unit
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
10257 unsigned long num_migr_units
= __le32_to_cpu(migr_rec
->num_migr_units
);
10259 int skipped_disks
= 0;
10261 err
= sysfs_get_str(info
, NULL
, "array_state", (char *)buffer
, 20);
10265 /* recover data only during assemblation */
10266 if (strncmp(buffer
, "inactive", 8) != 0)
10268 /* no data to recover */
10269 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
10271 if (curr_migr_unit
>= num_migr_units
)
10274 /* find device during reshape */
10275 for (id
= super
->devlist
; id
; id
= id
->next
)
10276 if (is_gen_migration(id
->dev
))
10281 map_dest
= get_imsm_map(id
->dev
, MAP_0
);
10282 new_disks
= map_dest
->num_members
;
10284 read_offset
= (unsigned long long)
10285 __le32_to_cpu(migr_rec
->ckpt_area_pba
) * 512;
10287 write_offset
= ((unsigned long long)
10288 __le32_to_cpu(migr_rec
->dest_1st_member_lba
) +
10289 pba_of_lba0(map_dest
)) * 512;
10291 unit_len
= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
10292 if (posix_memalign((void **)&buf
, sector_size
, unit_len
) != 0)
10294 targets
= xcalloc(new_disks
, sizeof(int));
10296 if (open_backup_targets(info
, new_disks
, targets
, super
, id
->dev
)) {
10297 pr_err("Cannot open some devices belonging to array.\n");
10301 for (i
= 0; i
< new_disks
; i
++) {
10302 if (targets
[i
] < 0) {
10306 if (lseek64(targets
[i
], read_offset
, SEEK_SET
) < 0) {
10307 pr_err("Cannot seek to block: %s\n",
10312 if ((unsigned)read(targets
[i
], buf
, unit_len
) != unit_len
) {
10313 pr_err("Cannot read copy area block: %s\n",
10318 if (lseek64(targets
[i
], write_offset
, SEEK_SET
) < 0) {
10319 pr_err("Cannot seek to block: %s\n",
10324 if ((unsigned)write(targets
[i
], buf
, unit_len
) != unit_len
) {
10325 pr_err("Cannot restore block: %s\n",
10332 if (skipped_disks
> imsm_get_allowed_degradation(info
->new_level
,
10336 pr_err("Cannot restore data from backup. Too many failed disks\n");
10340 if (save_checkpoint_imsm(st
, info
, UNIT_SRC_NORMAL
)) {
10341 /* ignore error == 2, this can mean end of reshape here
10343 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL) during restart\n");
10349 for (i
= 0; i
< new_disks
; i
++)
10358 static char disk_by_path
[] = "/dev/disk/by-path/";
10360 static const char *imsm_get_disk_controller_domain(const char *path
)
10362 char disk_path
[PATH_MAX
];
10366 strcpy(disk_path
, disk_by_path
);
10367 strncat(disk_path
, path
, PATH_MAX
- strlen(disk_path
) - 1);
10368 if (stat(disk_path
, &st
) == 0) {
10369 struct sys_dev
* hba
;
10372 path
= devt_to_devpath(st
.st_rdev
);
10375 hba
= find_disk_attached_hba(-1, path
);
10376 if (hba
&& hba
->type
== SYS_DEV_SAS
)
10378 else if (hba
&& hba
->type
== SYS_DEV_SATA
)
10382 dprintf("path: %s hba: %s attached: %s\n",
10383 path
, (hba
) ? hba
->path
: "NULL", drv
);
10389 static char *imsm_find_array_devnm_by_subdev(int subdev
, char *container
)
10391 static char devnm
[32];
10392 char subdev_name
[20];
10393 struct mdstat_ent
*mdstat
;
10395 sprintf(subdev_name
, "%d", subdev
);
10396 mdstat
= mdstat_by_subdev(subdev_name
, container
);
10400 strcpy(devnm
, mdstat
->devnm
);
10401 free_mdstat(mdstat
);
10405 static int imsm_reshape_is_allowed_on_container(struct supertype
*st
,
10406 struct geo_params
*geo
,
10407 int *old_raid_disks
,
10410 /* currently we only support increasing the number of devices
10411 * for a container. This increases the number of device for each
10412 * member array. They must all be RAID0 or RAID5.
10415 struct mdinfo
*info
, *member
;
10416 int devices_that_can_grow
= 0;
10418 dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): st->devnm = (%s)\n", st
->devnm
);
10420 if (geo
->size
> 0 ||
10421 geo
->level
!= UnSet
||
10422 geo
->layout
!= UnSet
||
10423 geo
->chunksize
!= 0 ||
10424 geo
->raid_disks
== UnSet
) {
10425 dprintf("imsm: Container operation is allowed for raid disks number change only.\n");
10429 if (direction
== ROLLBACK_METADATA_CHANGES
) {
10430 dprintf("imsm: Metadata changes rollback is not supported for container operation.\n");
10434 info
= container_content_imsm(st
, NULL
);
10435 for (member
= info
; member
; member
= member
->next
) {
10438 dprintf("imsm: checking device_num: %i\n",
10439 member
->container_member
);
10441 if (geo
->raid_disks
<= member
->array
.raid_disks
) {
10442 /* we work on container for Online Capacity Expansion
10443 * only so raid_disks has to grow
10445 dprintf("imsm: for container operation raid disks increase is required\n");
10449 if (info
->array
.level
!= 0 && info
->array
.level
!= 5) {
10450 /* we cannot use this container with other raid level
10452 dprintf("imsm: for container operation wrong raid level (%i) detected\n",
10453 info
->array
.level
);
10456 /* check for platform support
10457 * for this raid level configuration
10459 struct intel_super
*super
= st
->sb
;
10460 if (!is_raid_level_supported(super
->orom
,
10461 member
->array
.level
,
10462 geo
->raid_disks
)) {
10463 dprintf("platform does not support raid%d with %d disk%s\n",
10466 geo
->raid_disks
> 1 ? "s" : "");
10469 /* check if component size is aligned to chunk size
10471 if (info
->component_size
%
10472 (info
->array
.chunk_size
/512)) {
10473 dprintf("Component size is not aligned to chunk size\n");
10478 if (*old_raid_disks
&&
10479 info
->array
.raid_disks
!= *old_raid_disks
)
10481 *old_raid_disks
= info
->array
.raid_disks
;
10483 /* All raid5 and raid0 volumes in container
10484 * have to be ready for Online Capacity Expansion
10485 * so they need to be assembled. We have already
10486 * checked that no recovery etc is happening.
10488 result
= imsm_find_array_devnm_by_subdev(member
->container_member
,
10489 st
->container_devnm
);
10490 if (result
== NULL
) {
10491 dprintf("imsm: cannot find array\n");
10494 devices_that_can_grow
++;
10497 if (!member
&& devices_that_can_grow
)
10501 dprintf("Container operation allowed\n");
10503 dprintf("Error: %i\n", ret_val
);
10508 /* Function: get_spares_for_grow
10509 * Description: Allocates memory and creates list of spare devices
10510 * avaliable in container. Checks if spare drive size is acceptable.
10511 * Parameters: Pointer to the supertype structure
10512 * Returns: Pointer to the list of spare devices (mdinfo structure) on success,
10515 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
)
10517 unsigned long long min_size
= min_acceptable_spare_size_imsm(st
);
10518 return container_choose_spares(st
, min_size
, NULL
, NULL
, NULL
, 0);
10521 /******************************************************************************
10522 * function: imsm_create_metadata_update_for_reshape
10523 * Function creates update for whole IMSM container.
10525 ******************************************************************************/
10526 static int imsm_create_metadata_update_for_reshape(
10527 struct supertype
*st
,
10528 struct geo_params
*geo
,
10529 int old_raid_disks
,
10530 struct imsm_update_reshape
**updatep
)
10532 struct intel_super
*super
= st
->sb
;
10533 struct imsm_super
*mpb
= super
->anchor
;
10534 int update_memory_size
;
10535 struct imsm_update_reshape
*u
;
10536 struct mdinfo
*spares
;
10539 struct mdinfo
*dev
;
10541 dprintf("(enter) raid_disks = %i\n", geo
->raid_disks
);
10543 delta_disks
= geo
->raid_disks
- old_raid_disks
;
10545 /* size of all update data without anchor */
10546 update_memory_size
= sizeof(struct imsm_update_reshape
);
10548 /* now add space for spare disks that we need to add. */
10549 update_memory_size
+= sizeof(u
->new_disks
[0]) * (delta_disks
- 1);
10551 u
= xcalloc(1, update_memory_size
);
10552 u
->type
= update_reshape_container_disks
;
10553 u
->old_raid_disks
= old_raid_disks
;
10554 u
->new_raid_disks
= geo
->raid_disks
;
10556 /* now get spare disks list
10558 spares
= get_spares_for_grow(st
);
10561 || delta_disks
> spares
->array
.spare_disks
) {
10562 pr_err("imsm: ERROR: Cannot get spare devices for %s.\n", geo
->dev_name
);
10567 /* we have got spares
10568 * update disk list in imsm_disk list table in anchor
10570 dprintf("imsm: %i spares are available.\n\n",
10571 spares
->array
.spare_disks
);
10573 dev
= spares
->devs
;
10574 for (i
= 0; i
< delta_disks
; i
++) {
10579 u
->new_disks
[i
] = makedev(dev
->disk
.major
,
10581 dl
= get_disk_super(super
, dev
->disk
.major
, dev
->disk
.minor
);
10582 dl
->index
= mpb
->num_disks
;
10590 sysfs_free(spares
);
10592 dprintf("imsm: reshape update preparation :");
10593 if (i
== delta_disks
) {
10594 dprintf_cont(" OK\n");
10596 return update_memory_size
;
10599 dprintf_cont(" Error\n");
10604 /******************************************************************************
10605 * function: imsm_create_metadata_update_for_size_change()
10606 * Creates update for IMSM array for array size change.
10608 ******************************************************************************/
10609 static int imsm_create_metadata_update_for_size_change(
10610 struct supertype
*st
,
10611 struct geo_params
*geo
,
10612 struct imsm_update_size_change
**updatep
)
10614 struct intel_super
*super
= st
->sb
;
10615 int update_memory_size
;
10616 struct imsm_update_size_change
*u
;
10618 dprintf("(enter) New size = %llu\n", geo
->size
);
10620 /* size of all update data without anchor */
10621 update_memory_size
= sizeof(struct imsm_update_size_change
);
10623 u
= xcalloc(1, update_memory_size
);
10624 u
->type
= update_size_change
;
10625 u
->subdev
= super
->current_vol
;
10626 u
->new_size
= geo
->size
;
10628 dprintf("imsm: reshape update preparation : OK\n");
10631 return update_memory_size
;
10634 /******************************************************************************
10635 * function: imsm_create_metadata_update_for_migration()
10636 * Creates update for IMSM array.
10638 ******************************************************************************/
10639 static int imsm_create_metadata_update_for_migration(
10640 struct supertype
*st
,
10641 struct geo_params
*geo
,
10642 struct imsm_update_reshape_migration
**updatep
)
10644 struct intel_super
*super
= st
->sb
;
10645 int update_memory_size
;
10646 struct imsm_update_reshape_migration
*u
;
10647 struct imsm_dev
*dev
;
10648 int previous_level
= -1;
10650 dprintf("(enter) New Level = %i\n", geo
->level
);
10652 /* size of all update data without anchor */
10653 update_memory_size
= sizeof(struct imsm_update_reshape_migration
);
10655 u
= xcalloc(1, update_memory_size
);
10656 u
->type
= update_reshape_migration
;
10657 u
->subdev
= super
->current_vol
;
10658 u
->new_level
= geo
->level
;
10659 u
->new_layout
= geo
->layout
;
10660 u
->new_raid_disks
= u
->old_raid_disks
= geo
->raid_disks
;
10661 u
->new_disks
[0] = -1;
10662 u
->new_chunksize
= -1;
10664 dev
= get_imsm_dev(super
, u
->subdev
);
10666 struct imsm_map
*map
;
10668 map
= get_imsm_map(dev
, MAP_0
);
10670 int current_chunk_size
=
10671 __le16_to_cpu(map
->blocks_per_strip
) / 2;
10673 if (geo
->chunksize
!= current_chunk_size
) {
10674 u
->new_chunksize
= geo
->chunksize
/ 1024;
10675 dprintf("imsm: chunk size change from %i to %i\n",
10676 current_chunk_size
, u
->new_chunksize
);
10678 previous_level
= map
->raid_level
;
10681 if (geo
->level
== 5 && previous_level
== 0) {
10682 struct mdinfo
*spares
= NULL
;
10684 u
->new_raid_disks
++;
10685 spares
= get_spares_for_grow(st
);
10686 if (spares
== NULL
|| spares
->array
.spare_disks
< 1) {
10688 sysfs_free(spares
);
10689 update_memory_size
= 0;
10690 dprintf("error: cannot get spare device for requested migration");
10693 sysfs_free(spares
);
10695 dprintf("imsm: reshape update preparation : OK\n");
10698 return update_memory_size
;
10701 static void imsm_update_metadata_locally(struct supertype
*st
,
10702 void *buf
, int len
)
10704 struct metadata_update mu
;
10709 mu
.space_list
= NULL
;
10711 if (imsm_prepare_update(st
, &mu
))
10712 imsm_process_update(st
, &mu
);
10714 while (mu
.space_list
) {
10715 void **space
= mu
.space_list
;
10716 mu
.space_list
= *space
;
10721 /***************************************************************************
10722 * Function: imsm_analyze_change
10723 * Description: Function analyze change for single volume
10724 * and validate if transition is supported
10725 * Parameters: Geometry parameters, supertype structure,
10726 * metadata change direction (apply/rollback)
10727 * Returns: Operation type code on success, -1 if fail
10728 ****************************************************************************/
10729 enum imsm_reshape_type
imsm_analyze_change(struct supertype
*st
,
10730 struct geo_params
*geo
,
10733 struct mdinfo info
;
10735 int check_devs
= 0;
10737 /* number of added/removed disks in operation result */
10738 int devNumChange
= 0;
10739 /* imsm compatible layout value for array geometry verification */
10740 int imsm_layout
= -1;
10742 struct imsm_dev
*dev
;
10743 struct intel_super
*super
;
10744 unsigned long long current_size
;
10745 unsigned long long free_size
;
10746 unsigned long long max_size
;
10749 getinfo_super_imsm_volume(st
, &info
, NULL
);
10750 if (geo
->level
!= info
.array
.level
&& geo
->level
>= 0 &&
10751 geo
->level
!= UnSet
) {
10752 switch (info
.array
.level
) {
10754 if (geo
->level
== 5) {
10755 change
= CH_MIGRATION
;
10756 if (geo
->layout
!= ALGORITHM_LEFT_ASYMMETRIC
) {
10757 pr_err("Error. Requested Layout not supported (left-asymmetric layout is supported only)!\n");
10759 goto analyse_change_exit
;
10761 imsm_layout
= geo
->layout
;
10763 devNumChange
= 1; /* parity disk added */
10764 } else if (geo
->level
== 10) {
10765 change
= CH_TAKEOVER
;
10767 devNumChange
= 2; /* two mirrors added */
10768 imsm_layout
= 0x102; /* imsm supported layout */
10773 if (geo
->level
== 0) {
10774 change
= CH_TAKEOVER
;
10776 devNumChange
= -(geo
->raid_disks
/2);
10777 imsm_layout
= 0; /* imsm raid0 layout */
10781 if (change
== -1) {
10782 pr_err("Error. Level Migration from %d to %d not supported!\n",
10783 info
.array
.level
, geo
->level
);
10784 goto analyse_change_exit
;
10787 geo
->level
= info
.array
.level
;
10789 if (geo
->layout
!= info
.array
.layout
&&
10790 (geo
->layout
!= UnSet
&& geo
->layout
!= -1)) {
10791 change
= CH_MIGRATION
;
10792 if (info
.array
.layout
== 0 && info
.array
.level
== 5 &&
10793 geo
->layout
== 5) {
10794 /* reshape 5 -> 4 */
10795 } else if (info
.array
.layout
== 5 && info
.array
.level
== 5 &&
10796 geo
->layout
== 0) {
10797 /* reshape 4 -> 5 */
10801 pr_err("Error. Layout Migration from %d to %d not supported!\n",
10802 info
.array
.layout
, geo
->layout
);
10804 goto analyse_change_exit
;
10807 geo
->layout
= info
.array
.layout
;
10808 if (imsm_layout
== -1)
10809 imsm_layout
= info
.array
.layout
;
10812 if (geo
->chunksize
> 0 && geo
->chunksize
!= UnSet
&&
10813 geo
->chunksize
!= info
.array
.chunk_size
) {
10814 if (info
.array
.level
== 10) {
10815 pr_err("Error. Chunk size change for RAID 10 is not supported.\n");
10817 goto analyse_change_exit
;
10819 change
= CH_MIGRATION
;
10821 geo
->chunksize
= info
.array
.chunk_size
;
10824 chunk
= geo
->chunksize
/ 1024;
10827 dev
= get_imsm_dev(super
, super
->current_vol
);
10828 data_disks
= imsm_num_data_members(dev
, MAP_0
);
10829 /* compute current size per disk member
10831 current_size
= info
.custom_array_size
/ data_disks
;
10833 if (geo
->size
> 0 && geo
->size
!= MAX_SIZE
) {
10834 /* align component size
10836 geo
->size
= imsm_component_size_aligment_check(
10837 get_imsm_raid_level(dev
->vol
.map
),
10838 chunk
* 1024, super
->sector_size
,
10840 if (geo
->size
== 0) {
10841 pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is 0).\n",
10843 goto analyse_change_exit
;
10847 if (current_size
!= geo
->size
&& geo
->size
> 0) {
10848 if (change
!= -1) {
10849 pr_err("Error. Size change should be the only one at a time.\n");
10851 goto analyse_change_exit
;
10853 if ((super
->current_vol
+ 1) != super
->anchor
->num_raid_devs
) {
10854 pr_err("Error. The last volume in container can be expanded only (%i/%s).\n",
10855 super
->current_vol
, st
->devnm
);
10856 goto analyse_change_exit
;
10858 /* check the maximum available size
10860 rv
= imsm_get_free_size(st
, dev
->vol
.map
->num_members
,
10861 0, chunk
, &free_size
);
10863 /* Cannot find maximum available space
10867 max_size
= free_size
+ current_size
;
10868 /* align component size
10870 max_size
= imsm_component_size_aligment_check(
10871 get_imsm_raid_level(dev
->vol
.map
),
10872 chunk
* 1024, super
->sector_size
,
10875 if (geo
->size
== MAX_SIZE
) {
10876 /* requested size change to the maximum available size
10878 if (max_size
== 0) {
10879 pr_err("Error. Cannot find maximum available space.\n");
10881 goto analyse_change_exit
;
10883 geo
->size
= max_size
;
10886 if (direction
== ROLLBACK_METADATA_CHANGES
) {
10887 /* accept size for rollback only
10890 /* round size due to metadata compatibility
10892 geo
->size
= (geo
->size
>> SECT_PER_MB_SHIFT
)
10893 << SECT_PER_MB_SHIFT
;
10894 dprintf("Prepare update for size change to %llu\n",
10896 if (current_size
>= geo
->size
) {
10897 pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is %llu).\n",
10898 current_size
, geo
->size
);
10899 goto analyse_change_exit
;
10901 if (max_size
&& geo
->size
> max_size
) {
10902 pr_err("Error. Requested size is larger than maximum available size (maximum available size is %llu, requested size /rounded/ is %llu).\n",
10903 max_size
, geo
->size
);
10904 goto analyse_change_exit
;
10907 geo
->size
*= data_disks
;
10908 geo
->raid_disks
= dev
->vol
.map
->num_members
;
10909 change
= CH_ARRAY_SIZE
;
10911 if (!validate_geometry_imsm(st
,
10914 geo
->raid_disks
+ devNumChange
,
10916 geo
->size
, INVALID_SECTORS
,
10921 struct intel_super
*super
= st
->sb
;
10922 struct imsm_super
*mpb
= super
->anchor
;
10924 if (mpb
->num_raid_devs
> 1) {
10925 pr_err("Error. Cannot perform operation on %s- for this operation it MUST be single array in container\n",
10931 analyse_change_exit
:
10932 if (direction
== ROLLBACK_METADATA_CHANGES
&&
10933 (change
== CH_MIGRATION
|| change
== CH_TAKEOVER
)) {
10934 dprintf("imsm: Metadata changes rollback is not supported for migration and takeover operations.\n");
10940 int imsm_takeover(struct supertype
*st
, struct geo_params
*geo
)
10942 struct intel_super
*super
= st
->sb
;
10943 struct imsm_update_takeover
*u
;
10945 u
= xmalloc(sizeof(struct imsm_update_takeover
));
10947 u
->type
= update_takeover
;
10948 u
->subarray
= super
->current_vol
;
10950 /* 10->0 transition */
10951 if (geo
->level
== 0)
10952 u
->direction
= R10_TO_R0
;
10954 /* 0->10 transition */
10955 if (geo
->level
== 10)
10956 u
->direction
= R0_TO_R10
;
10958 /* update metadata locally */
10959 imsm_update_metadata_locally(st
, u
,
10960 sizeof(struct imsm_update_takeover
));
10961 /* and possibly remotely */
10962 if (st
->update_tail
)
10963 append_metadata_update(st
, u
,
10964 sizeof(struct imsm_update_takeover
));
10971 static int imsm_reshape_super(struct supertype
*st
, unsigned long long size
,
10973 int layout
, int chunksize
, int raid_disks
,
10974 int delta_disks
, char *backup
, char *dev
,
10975 int direction
, int verbose
)
10978 struct geo_params geo
;
10980 dprintf("(enter)\n");
10982 memset(&geo
, 0, sizeof(struct geo_params
));
10984 geo
.dev_name
= dev
;
10985 strcpy(geo
.devnm
, st
->devnm
);
10988 geo
.layout
= layout
;
10989 geo
.chunksize
= chunksize
;
10990 geo
.raid_disks
= raid_disks
;
10991 if (delta_disks
!= UnSet
)
10992 geo
.raid_disks
+= delta_disks
;
10994 dprintf("for level : %i\n", geo
.level
);
10995 dprintf("for raid_disks : %i\n", geo
.raid_disks
);
10997 if (experimental() == 0)
11000 if (strcmp(st
->container_devnm
, st
->devnm
) == 0) {
11001 /* On container level we can only increase number of devices. */
11002 dprintf("imsm: info: Container operation\n");
11003 int old_raid_disks
= 0;
11005 if (imsm_reshape_is_allowed_on_container(
11006 st
, &geo
, &old_raid_disks
, direction
)) {
11007 struct imsm_update_reshape
*u
= NULL
;
11010 len
= imsm_create_metadata_update_for_reshape(
11011 st
, &geo
, old_raid_disks
, &u
);
11014 dprintf("imsm: Cannot prepare update\n");
11015 goto exit_imsm_reshape_super
;
11019 /* update metadata locally */
11020 imsm_update_metadata_locally(st
, u
, len
);
11021 /* and possibly remotely */
11022 if (st
->update_tail
)
11023 append_metadata_update(st
, u
, len
);
11028 pr_err("(imsm) Operation is not allowed on this container\n");
11031 /* On volume level we support following operations
11032 * - takeover: raid10 -> raid0; raid0 -> raid10
11033 * - chunk size migration
11034 * - migration: raid5 -> raid0; raid0 -> raid5
11036 struct intel_super
*super
= st
->sb
;
11037 struct intel_dev
*dev
= super
->devlist
;
11039 dprintf("imsm: info: Volume operation\n");
11040 /* find requested device */
11043 imsm_find_array_devnm_by_subdev(
11044 dev
->index
, st
->container_devnm
);
11045 if (devnm
&& strcmp(devnm
, geo
.devnm
) == 0)
11050 pr_err("Cannot find %s (%s) subarray\n",
11051 geo
.dev_name
, geo
.devnm
);
11052 goto exit_imsm_reshape_super
;
11054 super
->current_vol
= dev
->index
;
11055 change
= imsm_analyze_change(st
, &geo
, direction
);
11058 ret_val
= imsm_takeover(st
, &geo
);
11060 case CH_MIGRATION
: {
11061 struct imsm_update_reshape_migration
*u
= NULL
;
11063 imsm_create_metadata_update_for_migration(
11066 dprintf("imsm: Cannot prepare update\n");
11070 /* update metadata locally */
11071 imsm_update_metadata_locally(st
, u
, len
);
11072 /* and possibly remotely */
11073 if (st
->update_tail
)
11074 append_metadata_update(st
, u
, len
);
11079 case CH_ARRAY_SIZE
: {
11080 struct imsm_update_size_change
*u
= NULL
;
11082 imsm_create_metadata_update_for_size_change(
11085 dprintf("imsm: Cannot prepare update\n");
11089 /* update metadata locally */
11090 imsm_update_metadata_locally(st
, u
, len
);
11091 /* and possibly remotely */
11092 if (st
->update_tail
)
11093 append_metadata_update(st
, u
, len
);
11103 exit_imsm_reshape_super
:
11104 dprintf("imsm: reshape_super Exit code = %i\n", ret_val
);
11108 #define COMPLETED_OK 0
11109 #define COMPLETED_NONE 1
11110 #define COMPLETED_DELAYED 2
11112 static int read_completed(int fd
, unsigned long long *val
)
11117 ret
= sysfs_fd_get_str(fd
, buf
, 50);
11121 ret
= COMPLETED_OK
;
11122 if (strncmp(buf
, "none", 4) == 0) {
11123 ret
= COMPLETED_NONE
;
11124 } else if (strncmp(buf
, "delayed", 7) == 0) {
11125 ret
= COMPLETED_DELAYED
;
11128 *val
= strtoull(buf
, &ep
, 0);
11129 if (ep
== buf
|| (*ep
!= 0 && *ep
!= '\n' && *ep
!= ' '))
11135 /*******************************************************************************
11136 * Function: wait_for_reshape_imsm
11137 * Description: Function writes new sync_max value and waits until
11138 * reshape process reach new position
11140 * sra : general array info
11141 * ndata : number of disks in new array's layout
11144 * 1 : there is no reshape in progress,
11146 ******************************************************************************/
11147 int wait_for_reshape_imsm(struct mdinfo
*sra
, int ndata
)
11149 int fd
= sysfs_get_fd(sra
, NULL
, "sync_completed");
11151 unsigned long long completed
;
11152 /* to_complete : new sync_max position */
11153 unsigned long long to_complete
= sra
->reshape_progress
;
11154 unsigned long long position_to_set
= to_complete
/ ndata
;
11157 dprintf("cannot open reshape_position\n");
11162 if (sysfs_fd_get_ll(fd
, &completed
) < 0) {
11164 dprintf("cannot read reshape_position (no reshape in progres)\n");
11173 if (completed
> position_to_set
) {
11174 dprintf("wrong next position to set %llu (%llu)\n",
11175 to_complete
, position_to_set
);
11179 dprintf("Position set: %llu\n", position_to_set
);
11180 if (sysfs_set_num(sra
, NULL
, "sync_max",
11181 position_to_set
) != 0) {
11182 dprintf("cannot set reshape position to %llu\n",
11191 int timeout
= 3000;
11193 sysfs_wait(fd
, &timeout
);
11194 if (sysfs_get_str(sra
, NULL
, "sync_action",
11196 strncmp(action
, "reshape", 7) != 0) {
11197 if (strncmp(action
, "idle", 4) == 0)
11203 rc
= read_completed(fd
, &completed
);
11205 dprintf("cannot read reshape_position (in loop)\n");
11208 } else if (rc
== COMPLETED_NONE
)
11210 } while (completed
< position_to_set
);
11216 /*******************************************************************************
11217 * Function: check_degradation_change
11218 * Description: Check that array hasn't become failed.
11220 * info : for sysfs access
11221 * sources : source disks descriptors
11222 * degraded: previous degradation level
11224 * degradation level
11225 ******************************************************************************/
11226 int check_degradation_change(struct mdinfo
*info
,
11230 unsigned long long new_degraded
;
11233 rv
= sysfs_get_ll(info
, NULL
, "degraded", &new_degraded
);
11234 if (rv
== -1 || (new_degraded
!= (unsigned long long)degraded
)) {
11235 /* check each device to ensure it is still working */
11238 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
11239 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
))
11241 if (sd
->disk
.state
& (1<<MD_DISK_SYNC
)) {
11244 if (sysfs_get_str(info
,
11245 sd
, "state", sbuf
, sizeof(sbuf
)) < 0 ||
11246 strstr(sbuf
, "faulty") ||
11247 strstr(sbuf
, "in_sync") == NULL
) {
11248 /* this device is dead */
11249 sd
->disk
.state
= (1<<MD_DISK_FAULTY
);
11250 if (sd
->disk
.raid_disk
>= 0 &&
11251 sources
[sd
->disk
.raid_disk
] >= 0) {
11253 sd
->disk
.raid_disk
]);
11254 sources
[sd
->disk
.raid_disk
] =
11263 return new_degraded
;
11266 /*******************************************************************************
11267 * Function: imsm_manage_reshape
11268 * Description: Function finds array under reshape and it manages reshape
11269 * process. It creates stripes backups (if required) and sets
11272 * afd : Backup handle (nattive) - not used
11273 * sra : general array info
11274 * reshape : reshape parameters - not used
11275 * st : supertype structure
11276 * blocks : size of critical section [blocks]
11277 * fds : table of source device descriptor
11278 * offsets : start of array (offest per devices)
11280 * destfd : table of destination device descriptor
11281 * destoffsets : table of destination offsets (per device)
11283 * 1 : success, reshape is done
11285 ******************************************************************************/
11286 static int imsm_manage_reshape(
11287 int afd
, struct mdinfo
*sra
, struct reshape
*reshape
,
11288 struct supertype
*st
, unsigned long backup_blocks
,
11289 int *fds
, unsigned long long *offsets
,
11290 int dests
, int *destfd
, unsigned long long *destoffsets
)
11293 struct intel_super
*super
= st
->sb
;
11294 struct intel_dev
*dv
;
11295 unsigned int sector_size
= super
->sector_size
;
11296 struct imsm_dev
*dev
= NULL
;
11297 struct imsm_map
*map_src
;
11298 int migr_vol_qan
= 0;
11299 int ndata
, odata
; /* [bytes] */
11300 int chunk
; /* [bytes] */
11301 struct migr_record
*migr_rec
;
11303 unsigned int buf_size
; /* [bytes] */
11304 unsigned long long max_position
; /* array size [bytes] */
11305 unsigned long long next_step
; /* [blocks]/[bytes] */
11306 unsigned long long old_data_stripe_length
;
11307 unsigned long long start_src
; /* [bytes] */
11308 unsigned long long start
; /* [bytes] */
11309 unsigned long long start_buf_shift
; /* [bytes] */
11311 int source_layout
= 0;
11316 if (!fds
|| !offsets
)
11319 /* Find volume during the reshape */
11320 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
11321 if (dv
->dev
->vol
.migr_type
== MIGR_GEN_MIGR
11322 && dv
->dev
->vol
.migr_state
== 1) {
11327 /* Only one volume can migrate at the same time */
11328 if (migr_vol_qan
!= 1) {
11329 pr_err("%s", migr_vol_qan
?
11330 "Number of migrating volumes greater than 1\n" :
11331 "There is no volume during migrationg\n");
11335 map_src
= get_imsm_map(dev
, MAP_1
);
11336 if (map_src
== NULL
)
11339 ndata
= imsm_num_data_members(dev
, MAP_0
);
11340 odata
= imsm_num_data_members(dev
, MAP_1
);
11342 chunk
= __le16_to_cpu(map_src
->blocks_per_strip
) * 512;
11343 old_data_stripe_length
= odata
* chunk
;
11345 migr_rec
= super
->migr_rec
;
11347 /* initialize migration record for start condition */
11348 if (sra
->reshape_progress
== 0)
11349 init_migr_record_imsm(st
, dev
, sra
);
11351 if (__le32_to_cpu(migr_rec
->rec_status
) != UNIT_SRC_NORMAL
) {
11352 dprintf("imsm: cannot restart migration when data are present in copy area.\n");
11355 /* Save checkpoint to update migration record for current
11356 * reshape position (in md). It can be farther than current
11357 * reshape position in metadata.
11359 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
11360 /* ignore error == 2, this can mean end of reshape here
11362 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL, initial save)\n");
11367 /* size for data */
11368 buf_size
= __le32_to_cpu(migr_rec
->blocks_per_unit
) * 512;
11369 /* extend buffer size for parity disk */
11370 buf_size
+= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
11371 /* add space for stripe aligment */
11372 buf_size
+= old_data_stripe_length
;
11373 if (posix_memalign((void **)&buf
, MAX_SECTOR_SIZE
, buf_size
)) {
11374 dprintf("imsm: Cannot allocate checkpoint buffer\n");
11378 max_position
= sra
->component_size
* ndata
;
11379 source_layout
= imsm_level_to_layout(map_src
->raid_level
);
11381 while (__le32_to_cpu(migr_rec
->curr_migr_unit
) <
11382 __le32_to_cpu(migr_rec
->num_migr_units
)) {
11383 /* current reshape position [blocks] */
11384 unsigned long long current_position
=
11385 __le32_to_cpu(migr_rec
->blocks_per_unit
)
11386 * __le32_to_cpu(migr_rec
->curr_migr_unit
);
11387 unsigned long long border
;
11389 /* Check that array hasn't become failed.
11391 degraded
= check_degradation_change(sra
, fds
, degraded
);
11392 if (degraded
> 1) {
11393 dprintf("imsm: Abort reshape due to degradation level (%i)\n", degraded
);
11397 next_step
= __le32_to_cpu(migr_rec
->blocks_per_unit
);
11399 if ((current_position
+ next_step
) > max_position
)
11400 next_step
= max_position
- current_position
;
11402 start
= current_position
* 512;
11404 /* align reading start to old geometry */
11405 start_buf_shift
= start
% old_data_stripe_length
;
11406 start_src
= start
- start_buf_shift
;
11408 border
= (start_src
/ odata
) - (start
/ ndata
);
11410 if (border
<= __le32_to_cpu(migr_rec
->dest_depth_per_unit
)) {
11411 /* save critical stripes to buf
11412 * start - start address of current unit
11413 * to backup [bytes]
11414 * start_src - start address of current unit
11415 * to backup alligned to source array
11418 unsigned long long next_step_filler
;
11419 unsigned long long copy_length
= next_step
* 512;
11421 /* allign copy area length to stripe in old geometry */
11422 next_step_filler
= ((copy_length
+ start_buf_shift
)
11423 % old_data_stripe_length
);
11424 if (next_step_filler
)
11425 next_step_filler
= (old_data_stripe_length
11426 - next_step_filler
);
11427 dprintf("save_stripes() parameters: start = %llu,\tstart_src = %llu,\tnext_step*512 = %llu,\tstart_in_buf_shift = %llu,\tnext_step_filler = %llu\n",
11428 start
, start_src
, copy_length
,
11429 start_buf_shift
, next_step_filler
);
11431 if (save_stripes(fds
, offsets
, map_src
->num_members
,
11432 chunk
, map_src
->raid_level
,
11433 source_layout
, 0, NULL
, start_src
,
11435 next_step_filler
+ start_buf_shift
,
11437 dprintf("imsm: Cannot save stripes to buffer\n");
11440 /* Convert data to destination format and store it
11441 * in backup general migration area
11443 if (save_backup_imsm(st
, dev
, sra
,
11444 buf
+ start_buf_shift
, copy_length
)) {
11445 dprintf("imsm: Cannot save stripes to target devices\n");
11448 if (save_checkpoint_imsm(st
, sra
,
11449 UNIT_SRC_IN_CP_AREA
)) {
11450 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_IN_CP_AREA)\n");
11454 /* set next step to use whole border area */
11455 border
/= next_step
;
11457 next_step
*= border
;
11459 /* When data backed up, checkpoint stored,
11460 * kick the kernel to reshape unit of data
11462 next_step
= next_step
+ sra
->reshape_progress
;
11463 /* limit next step to array max position */
11464 if (next_step
> max_position
)
11465 next_step
= max_position
;
11466 sysfs_set_num(sra
, NULL
, "suspend_lo", sra
->reshape_progress
);
11467 sysfs_set_num(sra
, NULL
, "suspend_hi", next_step
);
11468 sra
->reshape_progress
= next_step
;
11470 /* wait until reshape finish */
11471 if (wait_for_reshape_imsm(sra
, ndata
)) {
11472 dprintf("wait_for_reshape_imsm returned error!\n");
11478 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
11479 /* ignore error == 2, this can mean end of reshape here
11481 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL)\n");
11487 /* clear migr_rec on disks after successful migration */
11490 memset(super
->migr_rec_buf
, 0, MIGR_REC_BUF_SECTORS
*sector_size
);
11491 for (d
= super
->disks
; d
; d
= d
->next
) {
11492 if (d
->index
< 0 || is_failed(&d
->disk
))
11494 unsigned long long dsize
;
11496 get_dev_size(d
->fd
, NULL
, &dsize
);
11497 if (lseek64(d
->fd
, dsize
- MIGR_REC_SECTOR_POSITION
*sector_size
,
11499 if (write(d
->fd
, super
->migr_rec_buf
,
11500 MIGR_REC_BUF_SECTORS
*sector_size
) !=
11501 MIGR_REC_BUF_SECTORS
*sector_size
)
11502 perror("Write migr_rec failed");
11506 /* return '1' if done */
11510 /* See Grow.c: abort_reshape() for further explanation */
11511 sysfs_set_num(sra
, NULL
, "suspend_lo", 0x7FFFFFFFFFFFFFFFULL
);
11512 sysfs_set_num(sra
, NULL
, "suspend_hi", 0);
11513 sysfs_set_num(sra
, NULL
, "suspend_lo", 0);
11518 #endif /* MDASSEMBLE */
11520 struct superswitch super_imsm
= {
11522 .examine_super
= examine_super_imsm
,
11523 .brief_examine_super
= brief_examine_super_imsm
,
11524 .brief_examine_subarrays
= brief_examine_subarrays_imsm
,
11525 .export_examine_super
= export_examine_super_imsm
,
11526 .detail_super
= detail_super_imsm
,
11527 .brief_detail_super
= brief_detail_super_imsm
,
11528 .write_init_super
= write_init_super_imsm
,
11529 .validate_geometry
= validate_geometry_imsm
,
11530 .add_to_super
= add_to_super_imsm
,
11531 .remove_from_super
= remove_from_super_imsm
,
11532 .detail_platform
= detail_platform_imsm
,
11533 .export_detail_platform
= export_detail_platform_imsm
,
11534 .kill_subarray
= kill_subarray_imsm
,
11535 .update_subarray
= update_subarray_imsm
,
11536 .load_container
= load_container_imsm
,
11537 .default_geometry
= default_geometry_imsm
,
11538 .get_disk_controller_domain
= imsm_get_disk_controller_domain
,
11539 .reshape_super
= imsm_reshape_super
,
11540 .manage_reshape
= imsm_manage_reshape
,
11541 .recover_backup
= recover_backup_imsm
,
11542 .copy_metadata
= copy_metadata_imsm
,
11543 .examine_badblocks
= examine_badblocks_imsm
,
11545 .match_home
= match_home_imsm
,
11546 .uuid_from_super
= uuid_from_super_imsm
,
11547 .getinfo_super
= getinfo_super_imsm
,
11548 .getinfo_super_disks
= getinfo_super_disks_imsm
,
11549 .update_super
= update_super_imsm
,
11551 .avail_size
= avail_size_imsm
,
11552 .min_acceptable_spare_size
= min_acceptable_spare_size_imsm
,
11554 .compare_super
= compare_super_imsm
,
11556 .load_super
= load_super_imsm
,
11557 .init_super
= init_super_imsm
,
11558 .store_super
= store_super_imsm
,
11559 .free_super
= free_super_imsm
,
11560 .match_metadata_desc
= match_metadata_desc_imsm
,
11561 .container_content
= container_content_imsm
,
11562 .validate_container
= validate_container_imsm
,
11569 .open_new
= imsm_open_new
,
11570 .set_array_state
= imsm_set_array_state
,
11571 .set_disk
= imsm_set_disk
,
11572 .sync_metadata
= imsm_sync_metadata
,
11573 .activate_spare
= imsm_activate_spare
,
11574 .process_update
= imsm_process_update
,
11575 .prepare_update
= imsm_prepare_update
,
11576 .record_bad_block
= imsm_record_badblock
,
11577 .clear_bad_block
= imsm_clear_badblock
,
11578 .get_bad_blocks
= imsm_get_badblocks
,
11579 #endif /* MDASSEMBLE */