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 */
399 struct imsm_disk disk
;
400 #define IMSM_UNKNOWN_OWNER (-1)
402 struct intel_disk
*next
;
406 unsigned long long start
, size
;
409 /* definitions of reshape process types */
410 enum imsm_reshape_type
{
416 /* definition of messages passed to imsm_process_update */
417 enum imsm_update_type
{
418 update_activate_spare
,
422 update_add_remove_disk
,
423 update_reshape_container_disks
,
424 update_reshape_migration
,
426 update_general_migration_checkpoint
,
428 update_prealloc_badblocks_mem
,
431 struct imsm_update_activate_spare
{
432 enum imsm_update_type type
;
436 struct imsm_update_activate_spare
*next
;
442 unsigned long long size
;
449 enum takeover_direction
{
453 struct imsm_update_takeover
{
454 enum imsm_update_type type
;
456 enum takeover_direction direction
;
459 struct imsm_update_reshape
{
460 enum imsm_update_type type
;
464 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
467 struct imsm_update_reshape_migration
{
468 enum imsm_update_type type
;
471 /* fields for array migration changes
478 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
481 struct imsm_update_size_change
{
482 enum imsm_update_type type
;
487 struct imsm_update_general_migration_checkpoint
{
488 enum imsm_update_type type
;
489 __u32 curr_migr_unit
;
493 __u8 serial
[MAX_RAID_SERIAL_LEN
];
496 struct imsm_update_create_array
{
497 enum imsm_update_type type
;
502 struct imsm_update_kill_array
{
503 enum imsm_update_type type
;
507 struct imsm_update_rename_array
{
508 enum imsm_update_type type
;
509 __u8 name
[MAX_RAID_SERIAL_LEN
];
513 struct imsm_update_add_remove_disk
{
514 enum imsm_update_type type
;
517 struct imsm_update_prealloc_bb_mem
{
518 enum imsm_update_type type
;
521 static const char *_sys_dev_type
[] = {
522 [SYS_DEV_UNKNOWN
] = "Unknown",
523 [SYS_DEV_SAS
] = "SAS",
524 [SYS_DEV_SATA
] = "SATA",
525 [SYS_DEV_NVME
] = "NVMe",
526 [SYS_DEV_VMD
] = "VMD"
529 const char *get_sys_dev_type(enum sys_dev_type type
)
531 if (type
>= SYS_DEV_MAX
)
532 type
= SYS_DEV_UNKNOWN
;
534 return _sys_dev_type
[type
];
537 static struct intel_hba
* alloc_intel_hba(struct sys_dev
*device
)
539 struct intel_hba
*result
= xmalloc(sizeof(*result
));
541 result
->type
= device
->type
;
542 result
->path
= xstrdup(device
->path
);
544 if (result
->path
&& (result
->pci_id
= strrchr(result
->path
, '/')) != NULL
)
550 static struct intel_hba
* find_intel_hba(struct intel_hba
*hba
, struct sys_dev
*device
)
552 struct intel_hba
*result
;
554 for (result
= hba
; result
; result
= result
->next
) {
555 if (result
->type
== device
->type
&& strcmp(result
->path
, device
->path
) == 0)
561 static int attach_hba_to_super(struct intel_super
*super
, struct sys_dev
*device
)
563 struct intel_hba
*hba
;
565 /* check if disk attached to Intel HBA */
566 hba
= find_intel_hba(super
->hba
, device
);
569 /* Check if HBA is already attached to super */
570 if (super
->hba
== NULL
) {
571 super
->hba
= alloc_intel_hba(device
);
576 /* Intel metadata allows for all disks attached to the same type HBA.
577 * Do not support HBA types mixing
579 if (device
->type
!= hba
->type
)
582 /* Multiple same type HBAs can be used if they share the same OROM */
583 const struct imsm_orom
*device_orom
= get_orom_by_device_id(device
->dev_id
);
585 if (device_orom
!= super
->orom
)
591 hba
->next
= alloc_intel_hba(device
);
595 static struct sys_dev
* find_disk_attached_hba(int fd
, const char *devname
)
597 struct sys_dev
*list
, *elem
;
600 if ((list
= find_intel_devices()) == NULL
)
604 disk_path
= (char *) devname
;
606 disk_path
= diskfd_to_devpath(fd
);
611 for (elem
= list
; elem
; elem
= elem
->next
)
612 if (path_attached_to_hba(disk_path
, elem
->path
))
615 if (disk_path
!= devname
)
621 static int find_intel_hba_capability(int fd
, struct intel_super
*super
,
624 static struct supertype
*match_metadata_desc_imsm(char *arg
)
626 struct supertype
*st
;
628 if (strcmp(arg
, "imsm") != 0 &&
629 strcmp(arg
, "default") != 0
633 st
= xcalloc(1, sizeof(*st
));
634 st
->ss
= &super_imsm
;
635 st
->max_devs
= IMSM_MAX_DEVICES
;
636 st
->minor_version
= 0;
642 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
644 return &mpb
->sig
[MPB_SIG_LEN
];
648 /* retrieve a disk directly from the anchor when the anchor is known to be
649 * up-to-date, currently only at load time
651 static struct imsm_disk
*__get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
653 if (index
>= mpb
->num_disks
)
655 return &mpb
->disk
[index
];
658 /* retrieve the disk description based on a index of the disk
661 static struct dl
*get_imsm_dl_disk(struct intel_super
*super
, __u8 index
)
665 for (d
= super
->disks
; d
; d
= d
->next
)
666 if (d
->index
== index
)
671 /* retrieve a disk from the parsed metadata */
672 static struct imsm_disk
*get_imsm_disk(struct intel_super
*super
, __u8 index
)
676 dl
= get_imsm_dl_disk(super
, index
);
683 /* generate a checksum directly from the anchor when the anchor is known to be
684 * up-to-date, currently only at load or write_super after coalescing
686 static __u32
__gen_imsm_checksum(struct imsm_super
*mpb
)
688 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
689 __u32
*p
= (__u32
*) mpb
;
693 sum
+= __le32_to_cpu(*p
);
697 return sum
- __le32_to_cpu(mpb
->check_sum
);
700 static size_t sizeof_imsm_map(struct imsm_map
*map
)
702 return sizeof(struct imsm_map
) + sizeof(__u32
) * (map
->num_members
- 1);
705 struct imsm_map
*get_imsm_map(struct imsm_dev
*dev
, int second_map
)
707 /* A device can have 2 maps if it is in the middle of a migration.
709 * MAP_0 - we return the first map
710 * MAP_1 - we return the second map if it exists, else NULL
711 * MAP_X - we return the second map if it exists, else the first
713 struct imsm_map
*map
= &dev
->vol
.map
[0];
714 struct imsm_map
*map2
= NULL
;
716 if (dev
->vol
.migr_state
)
717 map2
= (void *)map
+ sizeof_imsm_map(map
);
719 switch (second_map
) {
736 /* return the size of the device.
737 * migr_state increases the returned size if map[0] were to be duplicated
739 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
, int migr_state
)
741 size_t size
= sizeof(*dev
) - sizeof(struct imsm_map
) +
742 sizeof_imsm_map(get_imsm_map(dev
, MAP_0
));
744 /* migrating means an additional map */
745 if (dev
->vol
.migr_state
)
746 size
+= sizeof_imsm_map(get_imsm_map(dev
, MAP_1
));
748 size
+= sizeof_imsm_map(get_imsm_map(dev
, MAP_0
));
754 /* retrieve disk serial number list from a metadata update */
755 static struct disk_info
*get_disk_info(struct imsm_update_create_array
*update
)
758 struct disk_info
*inf
;
760 inf
= u
+ sizeof(*update
) - sizeof(struct imsm_dev
) +
761 sizeof_imsm_dev(&update
->dev
, 0);
767 static struct imsm_dev
*__get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
773 if (index
>= mpb
->num_raid_devs
)
776 /* devices start after all disks */
777 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
779 for (i
= 0; i
<= index
; i
++)
781 return _mpb
+ offset
;
783 offset
+= sizeof_imsm_dev(_mpb
+ offset
, 0);
788 static struct imsm_dev
*get_imsm_dev(struct intel_super
*super
, __u8 index
)
790 struct intel_dev
*dv
;
792 if (index
>= super
->anchor
->num_raid_devs
)
794 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
795 if (dv
->index
== index
)
800 static inline unsigned long long __le48_to_cpu(const struct bbm_log_block_addr
803 return ((((__u64
)__le32_to_cpu(addr
->dw1
)) << 16) |
804 __le16_to_cpu(addr
->w1
));
807 static inline struct bbm_log_block_addr
__cpu_to_le48(unsigned long long sec
)
809 struct bbm_log_block_addr addr
;
811 addr
.w1
= __cpu_to_le16((__u16
)(sec
& 0xffff));
812 addr
.dw1
= __cpu_to_le32((__u32
)(sec
>> 16) & 0xffffffff);
817 /* get size of the bbm log */
818 static __u32
get_imsm_bbm_log_size(struct bbm_log
*log
)
820 if (!log
|| log
->entry_count
== 0)
823 return sizeof(log
->signature
) +
824 sizeof(log
->entry_count
) +
825 log
->entry_count
* sizeof(struct bbm_log_entry
);
828 /* check if bad block is not partially stored in bbm log */
829 static int is_stored_in_bbm(struct bbm_log
*log
, const __u8 idx
, const unsigned
830 long long sector
, const int length
, __u32
*pos
)
834 for (i
= *pos
; i
< log
->entry_count
; i
++) {
835 struct bbm_log_entry
*entry
= &log
->marked_block_entries
[i
];
836 unsigned long long bb_start
;
837 unsigned long long bb_end
;
839 bb_start
= __le48_to_cpu(&entry
->defective_block_start
);
840 bb_end
= bb_start
+ (entry
->marked_count
+ 1);
842 if ((entry
->disk_ordinal
== idx
) && (bb_start
>= sector
) &&
843 (bb_end
<= sector
+ length
)) {
851 /* record new bad block in bbm log */
852 static int record_new_badblock(struct bbm_log
*log
, const __u8 idx
, unsigned
853 long long sector
, int length
)
857 struct bbm_log_entry
*entry
= NULL
;
859 while (is_stored_in_bbm(log
, idx
, sector
, length
, &pos
)) {
860 struct bbm_log_entry
*e
= &log
->marked_block_entries
[pos
];
862 if ((e
->marked_count
+ 1 == BBM_LOG_MAX_LBA_ENTRY_VAL
) &&
863 (__le48_to_cpu(&e
->defective_block_start
) == sector
)) {
864 sector
+= BBM_LOG_MAX_LBA_ENTRY_VAL
;
865 length
-= BBM_LOG_MAX_LBA_ENTRY_VAL
;
874 int cnt
= (length
<= BBM_LOG_MAX_LBA_ENTRY_VAL
) ? length
:
875 BBM_LOG_MAX_LBA_ENTRY_VAL
;
876 entry
->defective_block_start
= __cpu_to_le48(sector
);
877 entry
->marked_count
= cnt
- 1;
884 new_bb
= ROUND_UP(length
, BBM_LOG_MAX_LBA_ENTRY_VAL
) /
885 BBM_LOG_MAX_LBA_ENTRY_VAL
;
886 if (log
->entry_count
+ new_bb
> BBM_LOG_MAX_ENTRIES
)
890 int cnt
= (length
<= BBM_LOG_MAX_LBA_ENTRY_VAL
) ? length
:
891 BBM_LOG_MAX_LBA_ENTRY_VAL
;
892 struct bbm_log_entry
*entry
=
893 &log
->marked_block_entries
[log
->entry_count
];
895 entry
->defective_block_start
= __cpu_to_le48(sector
);
896 entry
->marked_count
= cnt
- 1;
897 entry
->disk_ordinal
= idx
;
908 /* clear all bad blocks for given disk */
909 static void clear_disk_badblocks(struct bbm_log
*log
, const __u8 idx
)
913 while (i
< log
->entry_count
) {
914 struct bbm_log_entry
*entries
= log
->marked_block_entries
;
916 if (entries
[i
].disk_ordinal
== idx
) {
917 if (i
< log
->entry_count
- 1)
918 entries
[i
] = entries
[log
->entry_count
- 1];
926 /* clear given bad block */
927 static int clear_badblock(struct bbm_log
*log
, const __u8 idx
, const unsigned
928 long long sector
, const int length
) {
931 while (i
< log
->entry_count
) {
932 struct bbm_log_entry
*entries
= log
->marked_block_entries
;
934 if ((entries
[i
].disk_ordinal
== idx
) &&
935 (__le48_to_cpu(&entries
[i
].defective_block_start
) ==
936 sector
) && (entries
[i
].marked_count
+ 1 == length
)) {
937 if (i
< log
->entry_count
- 1)
938 entries
[i
] = entries
[log
->entry_count
- 1];
947 #endif /* MDASSEMBLE */
949 /* allocate and load BBM log from metadata */
950 static int load_bbm_log(struct intel_super
*super
)
952 struct imsm_super
*mpb
= super
->anchor
;
953 __u32 bbm_log_size
= __le32_to_cpu(mpb
->bbm_log_size
);
955 super
->bbm_log
= xcalloc(1, sizeof(struct bbm_log
));
960 struct bbm_log
*log
= (void *)mpb
+
961 __le32_to_cpu(mpb
->mpb_size
) - bbm_log_size
;
965 if (bbm_log_size
< sizeof(log
->signature
) +
966 sizeof(log
->entry_count
))
969 entry_count
= __le32_to_cpu(log
->entry_count
);
970 if ((__le32_to_cpu(log
->signature
) != BBM_LOG_SIGNATURE
) ||
971 (entry_count
> BBM_LOG_MAX_ENTRIES
))
975 sizeof(log
->signature
) + sizeof(log
->entry_count
) +
976 entry_count
* sizeof(struct bbm_log_entry
))
979 memcpy(super
->bbm_log
, log
, bbm_log_size
);
981 super
->bbm_log
->signature
= __cpu_to_le32(BBM_LOG_SIGNATURE
);
982 super
->bbm_log
->entry_count
= 0;
988 /* checks if bad block is within volume boundaries */
989 static int is_bad_block_in_volume(const struct bbm_log_entry
*entry
,
990 const unsigned long long start_sector
,
991 const unsigned long long size
)
993 unsigned long long bb_start
;
994 unsigned long long bb_end
;
996 bb_start
= __le48_to_cpu(&entry
->defective_block_start
);
997 bb_end
= bb_start
+ (entry
->marked_count
+ 1);
999 if (((bb_start
>= start_sector
) && (bb_start
< start_sector
+ size
)) ||
1000 ((bb_end
>= start_sector
) && (bb_end
<= start_sector
+ size
)))
1006 /* get list of bad blocks on a drive for a volume */
1007 static void get_volume_badblocks(const struct bbm_log
*log
, const __u8 idx
,
1008 const unsigned long long start_sector
,
1009 const unsigned long long size
,
1015 for (i
= 0; i
< log
->entry_count
; i
++) {
1016 const struct bbm_log_entry
*ent
=
1017 &log
->marked_block_entries
[i
];
1018 struct md_bb_entry
*bb
;
1020 if ((ent
->disk_ordinal
== idx
) &&
1021 is_bad_block_in_volume(ent
, start_sector
, size
)) {
1023 if (!bbs
->entries
) {
1024 bbs
->entries
= xmalloc(BBM_LOG_MAX_ENTRIES
*
1030 bb
= &bbs
->entries
[count
++];
1031 bb
->sector
= __le48_to_cpu(&ent
->defective_block_start
);
1032 bb
->length
= ent
->marked_count
+ 1;
1040 * == MAP_0 get first map
1041 * == MAP_1 get second map
1042 * == MAP_X than get map according to the current migr_state
1044 static __u32
get_imsm_ord_tbl_ent(struct imsm_dev
*dev
,
1048 struct imsm_map
*map
;
1050 map
= get_imsm_map(dev
, second_map
);
1052 /* top byte identifies disk under rebuild */
1053 return __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
1056 #define ord_to_idx(ord) (((ord) << 8) >> 8)
1057 static __u32
get_imsm_disk_idx(struct imsm_dev
*dev
, int slot
, int second_map
)
1059 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, second_map
);
1061 return ord_to_idx(ord
);
1064 static void set_imsm_ord_tbl_ent(struct imsm_map
*map
, int slot
, __u32 ord
)
1066 map
->disk_ord_tbl
[slot
] = __cpu_to_le32(ord
);
1069 static int get_imsm_disk_slot(struct imsm_map
*map
, unsigned idx
)
1074 for (slot
= 0; slot
< map
->num_members
; slot
++) {
1075 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
1076 if (ord_to_idx(ord
) == idx
)
1083 static int get_imsm_raid_level(struct imsm_map
*map
)
1085 if (map
->raid_level
== 1) {
1086 if (map
->num_members
== 2)
1092 return map
->raid_level
;
1095 static int cmp_extent(const void *av
, const void *bv
)
1097 const struct extent
*a
= av
;
1098 const struct extent
*b
= bv
;
1099 if (a
->start
< b
->start
)
1101 if (a
->start
> b
->start
)
1106 static int count_memberships(struct dl
*dl
, struct intel_super
*super
)
1108 int memberships
= 0;
1111 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1112 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1113 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1115 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
1122 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
);
1124 static int split_ull(unsigned long long n
, __u32
*lo
, __u32
*hi
)
1126 if (lo
== 0 || hi
== 0)
1128 *lo
= __le32_to_cpu((unsigned)n
);
1129 *hi
= __le32_to_cpu((unsigned)(n
>> 32));
1133 static unsigned long long join_u32(__u32 lo
, __u32 hi
)
1135 return (unsigned long long)__le32_to_cpu(lo
) |
1136 (((unsigned long long)__le32_to_cpu(hi
)) << 32);
1139 static unsigned long long total_blocks(struct imsm_disk
*disk
)
1143 return join_u32(disk
->total_blocks_lo
, disk
->total_blocks_hi
);
1146 static unsigned long long pba_of_lba0(struct imsm_map
*map
)
1150 return join_u32(map
->pba_of_lba0_lo
, map
->pba_of_lba0_hi
);
1153 static unsigned long long blocks_per_member(struct imsm_map
*map
)
1157 return join_u32(map
->blocks_per_member_lo
, map
->blocks_per_member_hi
);
1160 static unsigned long long num_data_stripes(struct imsm_map
*map
)
1164 return join_u32(map
->num_data_stripes_lo
, map
->num_data_stripes_hi
);
1167 static void set_total_blocks(struct imsm_disk
*disk
, unsigned long long n
)
1169 split_ull(n
, &disk
->total_blocks_lo
, &disk
->total_blocks_hi
);
1172 static void set_pba_of_lba0(struct imsm_map
*map
, unsigned long long n
)
1174 split_ull(n
, &map
->pba_of_lba0_lo
, &map
->pba_of_lba0_hi
);
1177 static void set_blocks_per_member(struct imsm_map
*map
, unsigned long long n
)
1179 split_ull(n
, &map
->blocks_per_member_lo
, &map
->blocks_per_member_hi
);
1182 static void set_num_data_stripes(struct imsm_map
*map
, unsigned long long n
)
1184 split_ull(n
, &map
->num_data_stripes_lo
, &map
->num_data_stripes_hi
);
1187 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
1189 /* find a list of used extents on the given physical device */
1190 struct extent
*rv
, *e
;
1192 int memberships
= count_memberships(dl
, super
);
1195 /* trim the reserved area for spares, so they can join any array
1196 * regardless of whether the OROM has assigned sectors from the
1197 * IMSM_RESERVED_SECTORS region
1199 if (dl
->index
== -1)
1200 reservation
= imsm_min_reserved_sectors(super
);
1202 reservation
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1204 rv
= xcalloc(sizeof(struct extent
), (memberships
+ 1));
1207 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1208 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1209 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1211 if (get_imsm_disk_slot(map
, dl
->index
) >= 0) {
1212 e
->start
= pba_of_lba0(map
);
1213 e
->size
= blocks_per_member(map
);
1217 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
1219 /* determine the start of the metadata
1220 * when no raid devices are defined use the default
1221 * ...otherwise allow the metadata to truncate the value
1222 * as is the case with older versions of imsm
1225 struct extent
*last
= &rv
[memberships
- 1];
1226 unsigned long long remainder
;
1228 remainder
= total_blocks(&dl
->disk
) - (last
->start
+ last
->size
);
1229 /* round down to 1k block to satisfy precision of the kernel
1233 /* make sure remainder is still sane */
1234 if (remainder
< (unsigned)ROUND_UP(super
->len
, 512) >> 9)
1235 remainder
= ROUND_UP(super
->len
, 512) >> 9;
1236 if (reservation
> remainder
)
1237 reservation
= remainder
;
1239 e
->start
= total_blocks(&dl
->disk
) - reservation
;
1244 /* try to determine how much space is reserved for metadata from
1245 * the last get_extents() entry, otherwise fallback to the
1248 static __u32
imsm_reserved_sectors(struct intel_super
*super
, struct dl
*dl
)
1254 /* for spares just return a minimal reservation which will grow
1255 * once the spare is picked up by an array
1257 if (dl
->index
== -1)
1258 return MPB_SECTOR_CNT
;
1260 e
= get_extents(super
, dl
);
1262 return MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1264 /* scroll to last entry */
1265 for (i
= 0; e
[i
].size
; i
++)
1268 rv
= total_blocks(&dl
->disk
) - e
[i
].start
;
1275 static int is_spare(struct imsm_disk
*disk
)
1277 return (disk
->status
& SPARE_DISK
) == SPARE_DISK
;
1280 static int is_configured(struct imsm_disk
*disk
)
1282 return (disk
->status
& CONFIGURED_DISK
) == CONFIGURED_DISK
;
1285 static int is_failed(struct imsm_disk
*disk
)
1287 return (disk
->status
& FAILED_DISK
) == FAILED_DISK
;
1290 /* try to determine how much space is reserved for metadata from
1291 * the last get_extents() entry on the smallest active disk,
1292 * otherwise fallback to the default
1294 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
)
1298 unsigned long long min_active
;
1300 __u32 rv
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1301 struct dl
*dl
, *dl_min
= NULL
;
1307 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
1310 unsigned long long blocks
= total_blocks(&dl
->disk
);
1311 if (blocks
< min_active
|| min_active
== 0) {
1313 min_active
= blocks
;
1319 /* find last lba used by subarrays on the smallest active disk */
1320 e
= get_extents(super
, dl_min
);
1323 for (i
= 0; e
[i
].size
; i
++)
1326 remainder
= min_active
- e
[i
].start
;
1329 /* to give priority to recovery we should not require full
1330 IMSM_RESERVED_SECTORS from the spare */
1331 rv
= MPB_SECTOR_CNT
+ NUM_BLOCKS_DIRTY_STRIPE_REGION
;
1333 /* if real reservation is smaller use that value */
1334 return (remainder
< rv
) ? remainder
: rv
;
1337 /* Return minimum size of a spare that can be used in this array*/
1338 static unsigned long long min_acceptable_spare_size_imsm(struct supertype
*st
)
1340 struct intel_super
*super
= st
->sb
;
1344 unsigned long long rv
= 0;
1348 /* find first active disk in array */
1350 while (dl
&& (is_failed(&dl
->disk
) || dl
->index
== -1))
1354 /* find last lba used by subarrays */
1355 e
= get_extents(super
, dl
);
1358 for (i
= 0; e
[i
].size
; i
++)
1361 rv
= e
[i
-1].start
+ e
[i
-1].size
;
1364 /* add the amount of space needed for metadata */
1365 rv
= rv
+ imsm_min_reserved_sectors(super
);
1370 static int is_gen_migration(struct imsm_dev
*dev
);
1372 #define IMSM_4K_DIV 8
1375 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
1376 struct imsm_dev
*dev
);
1378 static void print_imsm_dev(struct intel_super
*super
,
1379 struct imsm_dev
*dev
,
1385 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1386 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
1390 printf("[%.16s]:\n", dev
->volume
);
1391 printf(" UUID : %s\n", uuid
);
1392 printf(" RAID Level : %d", get_imsm_raid_level(map
));
1394 printf(" <-- %d", get_imsm_raid_level(map2
));
1396 printf(" Members : %d", map
->num_members
);
1398 printf(" <-- %d", map2
->num_members
);
1400 printf(" Slots : [");
1401 for (i
= 0; i
< map
->num_members
; i
++) {
1402 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_0
);
1403 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1408 for (i
= 0; i
< map2
->num_members
; i
++) {
1409 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_1
);
1410 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1415 printf(" Failed disk : ");
1416 if (map
->failed_disk_num
== 0xff)
1419 printf("%i", map
->failed_disk_num
);
1421 slot
= get_imsm_disk_slot(map
, disk_idx
);
1423 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
1424 printf(" This Slot : %d%s\n", slot
,
1425 ord
& IMSM_ORD_REBUILD
? " (out-of-sync)" : "");
1427 printf(" This Slot : ?\n");
1428 sz
= __le32_to_cpu(dev
->size_high
);
1430 sz
+= __le32_to_cpu(dev
->size_low
);
1431 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
1432 human_size(sz
* 512));
1433 sz
= blocks_per_member(map
);
1434 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
1435 human_size(sz
* 512));
1436 printf(" Sector Offset : %llu\n",
1438 printf(" Num Stripes : %llu\n",
1439 num_data_stripes(map
));
1440 printf(" Chunk Size : %u KiB",
1441 __le16_to_cpu(map
->blocks_per_strip
) / 2);
1443 printf(" <-- %u KiB",
1444 __le16_to_cpu(map2
->blocks_per_strip
) / 2);
1446 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
1447 printf(" Migrate State : ");
1448 if (dev
->vol
.migr_state
) {
1449 if (migr_type(dev
) == MIGR_INIT
)
1450 printf("initialize\n");
1451 else if (migr_type(dev
) == MIGR_REBUILD
)
1452 printf("rebuild\n");
1453 else if (migr_type(dev
) == MIGR_VERIFY
)
1455 else if (migr_type(dev
) == MIGR_GEN_MIGR
)
1456 printf("general migration\n");
1457 else if (migr_type(dev
) == MIGR_STATE_CHANGE
)
1458 printf("state change\n");
1459 else if (migr_type(dev
) == MIGR_REPAIR
)
1462 printf("<unknown:%d>\n", migr_type(dev
));
1465 printf(" Map State : %s", map_state_str
[map
->map_state
]);
1466 if (dev
->vol
.migr_state
) {
1467 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
1469 printf(" <-- %s", map_state_str
[map
->map_state
]);
1470 printf("\n Checkpoint : %u ",
1471 __le32_to_cpu(dev
->vol
.curr_migr_unit
));
1472 if (is_gen_migration(dev
) && (slot
> 1 || slot
< 0))
1475 printf("(%llu)", (unsigned long long)
1476 blocks_per_migr_unit(super
, dev
));
1479 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
1482 static void print_imsm_disk(struct imsm_disk
*disk
, int index
, __u32 reserved
)
1484 char str
[MAX_RAID_SERIAL_LEN
+ 1];
1487 if (index
< -1 || !disk
)
1491 snprintf(str
, MAX_RAID_SERIAL_LEN
+ 1, "%s", disk
->serial
);
1493 printf(" Disk%02d Serial : %s\n", index
, str
);
1495 printf(" Disk Serial : %s\n", str
);
1496 printf(" State :%s%s%s\n", is_spare(disk
) ? " spare" : "",
1497 is_configured(disk
) ? " active" : "",
1498 is_failed(disk
) ? " failed" : "");
1499 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
1500 sz
= total_blocks(disk
) - reserved
;
1501 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
1502 human_size(sz
* 512));
1505 void convert_to_4k_imsm_migr_rec(struct intel_super
*super
)
1507 struct migr_record
*migr_rec
= super
->migr_rec
;
1509 migr_rec
->blocks_per_unit
/= IMSM_4K_DIV
;
1510 migr_rec
->ckpt_area_pba
/= IMSM_4K_DIV
;
1511 migr_rec
->dest_1st_member_lba
/= IMSM_4K_DIV
;
1512 migr_rec
->dest_depth_per_unit
/= IMSM_4K_DIV
;
1513 split_ull((join_u32(migr_rec
->post_migr_vol_cap
,
1514 migr_rec
->post_migr_vol_cap_hi
) / IMSM_4K_DIV
),
1515 &migr_rec
->post_migr_vol_cap
, &migr_rec
->post_migr_vol_cap_hi
);
1518 void convert_to_4k_imsm_disk(struct imsm_disk
*disk
)
1520 set_total_blocks(disk
, (total_blocks(disk
)/IMSM_4K_DIV
));
1523 void convert_to_4k(struct intel_super
*super
)
1525 struct imsm_super
*mpb
= super
->anchor
;
1526 struct imsm_disk
*disk
;
1529 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1530 disk
= __get_imsm_disk(mpb
, i
);
1532 convert_to_4k_imsm_disk(disk
);
1534 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1535 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1536 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1538 split_ull((join_u32(dev
->size_low
, dev
->size_high
)/IMSM_4K_DIV
),
1539 &dev
->size_low
, &dev
->size_high
);
1540 dev
->vol
.curr_migr_unit
/= IMSM_4K_DIV
;
1543 set_blocks_per_member(map
, blocks_per_member(map
)/IMSM_4K_DIV
);
1544 map
->blocks_per_strip
/= IMSM_4K_DIV
;
1545 set_pba_of_lba0(map
, pba_of_lba0(map
)/IMSM_4K_DIV
);
1547 if (dev
->vol
.migr_state
) {
1549 map
= get_imsm_map(dev
, MAP_1
);
1550 set_blocks_per_member(map
,
1551 blocks_per_member(map
)/IMSM_4K_DIV
);
1552 map
->blocks_per_strip
/= IMSM_4K_DIV
;
1553 set_pba_of_lba0(map
, pba_of_lba0(map
)/IMSM_4K_DIV
);
1557 mpb
->check_sum
= __gen_imsm_checksum(mpb
);
1560 void examine_migr_rec_imsm(struct intel_super
*super
)
1562 struct migr_record
*migr_rec
= super
->migr_rec
;
1563 struct imsm_super
*mpb
= super
->anchor
;
1566 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1567 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1568 struct imsm_map
*map
;
1571 if (is_gen_migration(dev
) == 0)
1574 printf("\nMigration Record Information:");
1576 /* first map under migration */
1577 map
= get_imsm_map(dev
, MAP_0
);
1579 slot
= get_imsm_disk_slot(map
, super
->disks
->index
);
1580 if (map
== NULL
|| slot
> 1 || slot
< 0) {
1581 printf(" Empty\n ");
1582 printf("Examine one of first two disks in array\n");
1585 printf("\n Status : ");
1586 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
1589 printf("Contains Data\n");
1590 printf(" Current Unit : %u\n",
1591 __le32_to_cpu(migr_rec
->curr_migr_unit
));
1592 printf(" Family : %u\n",
1593 __le32_to_cpu(migr_rec
->family_num
));
1594 printf(" Ascending : %u\n",
1595 __le32_to_cpu(migr_rec
->ascending_migr
));
1596 printf(" Blocks Per Unit : %u\n",
1597 __le32_to_cpu(migr_rec
->blocks_per_unit
));
1598 printf(" Dest. Depth Per Unit : %u\n",
1599 __le32_to_cpu(migr_rec
->dest_depth_per_unit
));
1600 printf(" Checkpoint Area pba : %u\n",
1601 __le32_to_cpu(migr_rec
->ckpt_area_pba
));
1602 printf(" First member lba : %u\n",
1603 __le32_to_cpu(migr_rec
->dest_1st_member_lba
));
1604 printf(" Total Number of Units : %u\n",
1605 __le32_to_cpu(migr_rec
->num_migr_units
));
1606 printf(" Size of volume : %u\n",
1607 __le32_to_cpu(migr_rec
->post_migr_vol_cap
));
1608 printf(" Expansion space for LBA64 : %u\n",
1609 __le32_to_cpu(migr_rec
->post_migr_vol_cap_hi
));
1610 printf(" Record was read from : %u\n",
1611 __le32_to_cpu(migr_rec
->ckpt_read_disk_num
));
1616 #endif /* MDASSEMBLE */
1618 void convert_from_4k_imsm_migr_rec(struct intel_super
*super
)
1620 struct migr_record
*migr_rec
= super
->migr_rec
;
1622 migr_rec
->blocks_per_unit
*= IMSM_4K_DIV
;
1623 migr_rec
->ckpt_area_pba
*= IMSM_4K_DIV
;
1624 migr_rec
->dest_1st_member_lba
*= IMSM_4K_DIV
;
1625 migr_rec
->dest_depth_per_unit
*= IMSM_4K_DIV
;
1626 split_ull((join_u32(migr_rec
->post_migr_vol_cap
,
1627 migr_rec
->post_migr_vol_cap_hi
) * IMSM_4K_DIV
),
1628 &migr_rec
->post_migr_vol_cap
,
1629 &migr_rec
->post_migr_vol_cap_hi
);
1632 void convert_from_4k(struct intel_super
*super
)
1634 struct imsm_super
*mpb
= super
->anchor
;
1635 struct imsm_disk
*disk
;
1638 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1639 disk
= __get_imsm_disk(mpb
, i
);
1641 set_total_blocks(disk
, (total_blocks(disk
)*IMSM_4K_DIV
));
1644 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1645 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1646 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1648 split_ull((join_u32(dev
->size_low
, dev
->size_high
)*IMSM_4K_DIV
),
1649 &dev
->size_low
, &dev
->size_high
);
1650 dev
->vol
.curr_migr_unit
*= IMSM_4K_DIV
;
1653 set_blocks_per_member(map
, blocks_per_member(map
)*IMSM_4K_DIV
);
1654 map
->blocks_per_strip
*= IMSM_4K_DIV
;
1655 set_pba_of_lba0(map
, pba_of_lba0(map
)*IMSM_4K_DIV
);
1657 if (dev
->vol
.migr_state
) {
1659 map
= get_imsm_map(dev
, MAP_1
);
1660 set_blocks_per_member(map
,
1661 blocks_per_member(map
)*IMSM_4K_DIV
);
1662 map
->blocks_per_strip
*= IMSM_4K_DIV
;
1663 set_pba_of_lba0(map
, pba_of_lba0(map
)*IMSM_4K_DIV
);
1667 mpb
->check_sum
= __gen_imsm_checksum(mpb
);
1670 /*******************************************************************************
1671 * function: imsm_check_attributes
1672 * Description: Function checks if features represented by attributes flags
1673 * are supported by mdadm.
1675 * attributes - Attributes read from metadata
1677 * 0 - passed attributes contains unsupported features flags
1678 * 1 - all features are supported
1679 ******************************************************************************/
1680 static int imsm_check_attributes(__u32 attributes
)
1683 __u32 not_supported
= MPB_ATTRIB_SUPPORTED
^0xffffffff;
1685 not_supported
&= ~MPB_ATTRIB_IGNORED
;
1687 not_supported
&= attributes
;
1688 if (not_supported
) {
1689 pr_err("(IMSM): Unsupported attributes : %x\n",
1690 (unsigned)__le32_to_cpu(not_supported
));
1691 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1692 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n");
1693 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1695 if (not_supported
& MPB_ATTRIB_2TB
) {
1696 dprintf("\t\tMPB_ATTRIB_2TB\n");
1697 not_supported
^= MPB_ATTRIB_2TB
;
1699 if (not_supported
& MPB_ATTRIB_RAID0
) {
1700 dprintf("\t\tMPB_ATTRIB_RAID0\n");
1701 not_supported
^= MPB_ATTRIB_RAID0
;
1703 if (not_supported
& MPB_ATTRIB_RAID1
) {
1704 dprintf("\t\tMPB_ATTRIB_RAID1\n");
1705 not_supported
^= MPB_ATTRIB_RAID1
;
1707 if (not_supported
& MPB_ATTRIB_RAID10
) {
1708 dprintf("\t\tMPB_ATTRIB_RAID10\n");
1709 not_supported
^= MPB_ATTRIB_RAID10
;
1711 if (not_supported
& MPB_ATTRIB_RAID1E
) {
1712 dprintf("\t\tMPB_ATTRIB_RAID1E\n");
1713 not_supported
^= MPB_ATTRIB_RAID1E
;
1715 if (not_supported
& MPB_ATTRIB_RAID5
) {
1716 dprintf("\t\tMPB_ATTRIB_RAID5\n");
1717 not_supported
^= MPB_ATTRIB_RAID5
;
1719 if (not_supported
& MPB_ATTRIB_RAIDCNG
) {
1720 dprintf("\t\tMPB_ATTRIB_RAIDCNG\n");
1721 not_supported
^= MPB_ATTRIB_RAIDCNG
;
1723 if (not_supported
& MPB_ATTRIB_BBM
) {
1724 dprintf("\t\tMPB_ATTRIB_BBM\n");
1725 not_supported
^= MPB_ATTRIB_BBM
;
1727 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1728 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n");
1729 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1731 if (not_supported
& MPB_ATTRIB_EXP_STRIPE_SIZE
) {
1732 dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n");
1733 not_supported
^= MPB_ATTRIB_EXP_STRIPE_SIZE
;
1735 if (not_supported
& MPB_ATTRIB_2TB_DISK
) {
1736 dprintf("\t\tMPB_ATTRIB_2TB_DISK\n");
1737 not_supported
^= MPB_ATTRIB_2TB_DISK
;
1739 if (not_supported
& MPB_ATTRIB_NEVER_USE2
) {
1740 dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n");
1741 not_supported
^= MPB_ATTRIB_NEVER_USE2
;
1743 if (not_supported
& MPB_ATTRIB_NEVER_USE
) {
1744 dprintf("\t\tMPB_ATTRIB_NEVER_USE\n");
1745 not_supported
^= MPB_ATTRIB_NEVER_USE
;
1749 dprintf("(IMSM): Unknown attributes : %x\n", not_supported
);
1758 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1760 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
1762 struct intel_super
*super
= st
->sb
;
1763 struct imsm_super
*mpb
= super
->anchor
;
1764 char str
[MAX_SIGNATURE_LENGTH
];
1769 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
1772 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
1773 printf(" Magic : %s\n", str
);
1774 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
1775 printf(" Version : %s\n", get_imsm_version(mpb
));
1776 printf(" Orig Family : %08x\n", __le32_to_cpu(mpb
->orig_family_num
));
1777 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
1778 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
1779 printf(" Attributes : ");
1780 if (imsm_check_attributes(mpb
->attributes
))
1781 printf("All supported\n");
1783 printf("not supported\n");
1784 getinfo_super_imsm(st
, &info
, NULL
);
1785 fname_from_uuid(st
, &info
, nbuf
, ':');
1786 printf(" UUID : %s\n", nbuf
+ 5);
1787 sum
= __le32_to_cpu(mpb
->check_sum
);
1788 printf(" Checksum : %08x %s\n", sum
,
1789 __gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
1790 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
, super
->sector_size
));
1791 printf(" Disks : %d\n", mpb
->num_disks
);
1792 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
1793 print_imsm_disk(__get_imsm_disk(mpb
, super
->disks
->index
), super
->disks
->index
, reserved
);
1794 if (get_imsm_bbm_log_size(super
->bbm_log
)) {
1795 struct bbm_log
*log
= super
->bbm_log
;
1798 printf("Bad Block Management Log:\n");
1799 printf(" Log Size : %d\n", __le32_to_cpu(mpb
->bbm_log_size
));
1800 printf(" Signature : %x\n", __le32_to_cpu(log
->signature
));
1801 printf(" Entry Count : %d\n", __le32_to_cpu(log
->entry_count
));
1803 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1805 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1807 super
->current_vol
= i
;
1808 getinfo_super_imsm(st
, &info
, NULL
);
1809 fname_from_uuid(st
, &info
, nbuf
, ':');
1810 print_imsm_dev(super
, dev
, nbuf
+ 5, super
->disks
->index
);
1812 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1813 if (i
== super
->disks
->index
)
1815 print_imsm_disk(__get_imsm_disk(mpb
, i
), i
, reserved
);
1818 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1819 if (dl
->index
== -1)
1820 print_imsm_disk(&dl
->disk
, -1, reserved
);
1822 examine_migr_rec_imsm(super
);
1825 static void brief_examine_super_imsm(struct supertype
*st
, int verbose
)
1827 /* We just write a generic IMSM ARRAY entry */
1830 struct intel_super
*super
= st
->sb
;
1832 if (!super
->anchor
->num_raid_devs
) {
1833 printf("ARRAY metadata=imsm\n");
1837 getinfo_super_imsm(st
, &info
, NULL
);
1838 fname_from_uuid(st
, &info
, nbuf
, ':');
1839 printf("ARRAY metadata=imsm UUID=%s\n", nbuf
+ 5);
1842 static void brief_examine_subarrays_imsm(struct supertype
*st
, int verbose
)
1844 /* We just write a generic IMSM ARRAY entry */
1848 struct intel_super
*super
= st
->sb
;
1851 if (!super
->anchor
->num_raid_devs
)
1854 getinfo_super_imsm(st
, &info
, NULL
);
1855 fname_from_uuid(st
, &info
, nbuf
, ':');
1856 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1857 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1859 super
->current_vol
= i
;
1860 getinfo_super_imsm(st
, &info
, NULL
);
1861 fname_from_uuid(st
, &info
, nbuf1
, ':');
1862 printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n",
1863 dev
->volume
, nbuf
+ 5, i
, nbuf1
+ 5);
1867 static void export_examine_super_imsm(struct supertype
*st
)
1869 struct intel_super
*super
= st
->sb
;
1870 struct imsm_super
*mpb
= super
->anchor
;
1874 getinfo_super_imsm(st
, &info
, NULL
);
1875 fname_from_uuid(st
, &info
, nbuf
, ':');
1876 printf("MD_METADATA=imsm\n");
1877 printf("MD_LEVEL=container\n");
1878 printf("MD_UUID=%s\n", nbuf
+5);
1879 printf("MD_DEVICES=%u\n", mpb
->num_disks
);
1882 static int copy_metadata_imsm(struct supertype
*st
, int from
, int to
)
1884 /* The second last sector of the device contains
1885 * the "struct imsm_super" metadata.
1886 * This contains mpb_size which is the size in bytes of the
1887 * extended metadata. This is located immediately before
1889 * We want to read all that, plus the last sector which
1890 * may contain a migration record, and write it all
1894 unsigned long long dsize
, offset
;
1896 struct imsm_super
*sb
;
1897 struct intel_super
*super
= st
->sb
;
1898 unsigned int sector_size
= super
->sector_size
;
1899 unsigned int written
= 0;
1901 if (posix_memalign(&buf
, MAX_SECTOR_SIZE
, MAX_SECTOR_SIZE
) != 0)
1904 if (!get_dev_size(from
, NULL
, &dsize
))
1907 if (lseek64(from
, dsize
-(2*sector_size
), 0) < 0)
1909 if (read(from
, buf
, sector_size
) != sector_size
)
1912 if (strncmp((char*)sb
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0)
1915 sectors
= mpb_sectors(sb
, sector_size
) + 2;
1916 offset
= dsize
- sectors
* sector_size
;
1917 if (lseek64(from
, offset
, 0) < 0 ||
1918 lseek64(to
, offset
, 0) < 0)
1920 while (written
< sectors
* sector_size
) {
1921 int n
= sectors
*sector_size
- written
;
1924 if (read(from
, buf
, n
) != n
)
1926 if (write(to
, buf
, n
) != n
)
1937 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
1942 getinfo_super_imsm(st
, &info
, NULL
);
1943 fname_from_uuid(st
, &info
, nbuf
, ':');
1944 printf("\n UUID : %s\n", nbuf
+ 5);
1947 static void brief_detail_super_imsm(struct supertype
*st
)
1951 getinfo_super_imsm(st
, &info
, NULL
);
1952 fname_from_uuid(st
, &info
, nbuf
, ':');
1953 printf(" UUID=%s", nbuf
+ 5);
1956 static int imsm_read_serial(int fd
, char *devname
, __u8
*serial
);
1957 static void fd2devname(int fd
, char *name
);
1959 static int ahci_enumerate_ports(const char *hba_path
, int port_count
, int host_base
, int verbose
)
1961 /* dump an unsorted list of devices attached to AHCI Intel storage
1962 * controller, as well as non-connected ports
1964 int hba_len
= strlen(hba_path
) + 1;
1969 unsigned long port_mask
= (1 << port_count
) - 1;
1971 if (port_count
> (int)sizeof(port_mask
) * 8) {
1973 pr_err("port_count %d out of range\n", port_count
);
1977 /* scroll through /sys/dev/block looking for devices attached to
1980 dir
= opendir("/sys/dev/block");
1984 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
1995 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
1997 path
= devt_to_devpath(makedev(major
, minor
));
2000 if (!path_attached_to_hba(path
, hba_path
)) {
2006 /* retrieve the scsi device type */
2007 if (asprintf(&device
, "/sys/dev/block/%d:%d/device/xxxxxxx", major
, minor
) < 0) {
2009 pr_err("failed to allocate 'device'\n");
2013 sprintf(device
, "/sys/dev/block/%d:%d/device/type", major
, minor
);
2014 if (load_sys(device
, buf
, sizeof(buf
)) != 0) {
2016 pr_err("failed to read device type for %s\n",
2022 type
= strtoul(buf
, NULL
, 10);
2024 /* if it's not a disk print the vendor and model */
2025 if (!(type
== 0 || type
== 7 || type
== 14)) {
2028 sprintf(device
, "/sys/dev/block/%d:%d/device/vendor", major
, minor
);
2029 if (load_sys(device
, buf
, sizeof(buf
)) == 0) {
2030 strncpy(vendor
, buf
, sizeof(vendor
));
2031 vendor
[sizeof(vendor
) - 1] = '\0';
2032 c
= (char *) &vendor
[sizeof(vendor
) - 1];
2033 while (isspace(*c
) || *c
== '\0')
2037 sprintf(device
, "/sys/dev/block/%d:%d/device/model", major
, minor
);
2038 if (load_sys(device
, buf
, sizeof(buf
)) == 0) {
2039 strncpy(model
, buf
, sizeof(model
));
2040 model
[sizeof(model
) - 1] = '\0';
2041 c
= (char *) &model
[sizeof(model
) - 1];
2042 while (isspace(*c
) || *c
== '\0')
2046 if (vendor
[0] && model
[0])
2047 sprintf(buf
, "%.64s %.64s", vendor
, model
);
2049 switch (type
) { /* numbers from hald/linux/device.c */
2050 case 1: sprintf(buf
, "tape"); break;
2051 case 2: sprintf(buf
, "printer"); break;
2052 case 3: sprintf(buf
, "processor"); break;
2054 case 5: sprintf(buf
, "cdrom"); break;
2055 case 6: sprintf(buf
, "scanner"); break;
2056 case 8: sprintf(buf
, "media_changer"); break;
2057 case 9: sprintf(buf
, "comm"); break;
2058 case 12: sprintf(buf
, "raid"); break;
2059 default: sprintf(buf
, "unknown");
2065 /* chop device path to 'host%d' and calculate the port number */
2066 c
= strchr(&path
[hba_len
], '/');
2069 pr_err("%s - invalid path name\n", path
+ hba_len
);
2074 if ((sscanf(&path
[hba_len
], "ata%d", &port
) == 1) ||
2075 ((sscanf(&path
[hba_len
], "host%d", &port
) == 1)))
2079 *c
= '/'; /* repair the full string */
2080 pr_err("failed to determine port number for %s\n",
2087 /* mark this port as used */
2088 port_mask
&= ~(1 << port
);
2090 /* print out the device information */
2092 printf(" Port%d : - non-disk device (%s) -\n", port
, buf
);
2096 fd
= dev_open(ent
->d_name
, O_RDONLY
);
2098 printf(" Port%d : - disk info unavailable -\n", port
);
2100 fd2devname(fd
, buf
);
2101 printf(" Port%d : %s", port
, buf
);
2102 if (imsm_read_serial(fd
, NULL
, (__u8
*) buf
) == 0)
2103 printf(" (%.*s)\n", MAX_RAID_SERIAL_LEN
, buf
);
2118 for (i
= 0; i
< port_count
; i
++)
2119 if (port_mask
& (1 << i
))
2120 printf(" Port%d : - no device attached -\n", i
);
2126 static int print_vmd_attached_devs(struct sys_dev
*hba
)
2134 if (hba
->type
!= SYS_DEV_VMD
)
2137 /* scroll through /sys/dev/block looking for devices attached to
2140 dir
= opendir("/sys/bus/pci/drivers/nvme");
2144 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
2147 /* is 'ent' a device? check that the 'subsystem' link exists and
2148 * that its target matches 'bus'
2150 sprintf(path
, "/sys/bus/pci/drivers/nvme/%s/subsystem",
2152 n
= readlink(path
, link
, sizeof(link
));
2153 if (n
< 0 || n
>= (int)sizeof(link
))
2156 c
= strrchr(link
, '/');
2159 if (strncmp("pci", c
+1, strlen("pci")) != 0)
2162 sprintf(path
, "/sys/bus/pci/drivers/nvme/%s", ent
->d_name
);
2163 /* if not a intel NVMe - skip it*/
2164 if (devpath_to_vendor(path
) != 0x8086)
2167 rp
= realpath(path
, NULL
);
2171 if (path_attached_to_hba(rp
, hba
->path
)) {
2172 printf(" NVMe under VMD : %s\n", rp
);
2181 static void print_found_intel_controllers(struct sys_dev
*elem
)
2183 for (; elem
; elem
= elem
->next
) {
2184 pr_err("found Intel(R) ");
2185 if (elem
->type
== SYS_DEV_SATA
)
2186 fprintf(stderr
, "SATA ");
2187 else if (elem
->type
== SYS_DEV_SAS
)
2188 fprintf(stderr
, "SAS ");
2189 else if (elem
->type
== SYS_DEV_NVME
)
2190 fprintf(stderr
, "NVMe ");
2192 if (elem
->type
== SYS_DEV_VMD
)
2193 fprintf(stderr
, "VMD domain");
2195 fprintf(stderr
, "RAID controller");
2198 fprintf(stderr
, " at %s", elem
->pci_id
);
2199 fprintf(stderr
, ".\n");
2204 static int ahci_get_port_count(const char *hba_path
, int *port_count
)
2211 if ((dir
= opendir(hba_path
)) == NULL
)
2214 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
2217 if ((sscanf(ent
->d_name
, "ata%d", &host
) != 1) &&
2218 ((sscanf(ent
->d_name
, "host%d", &host
) != 1)))
2220 if (*port_count
== 0)
2222 else if (host
< host_base
)
2225 if (host
+ 1 > *port_count
+ host_base
)
2226 *port_count
= host
+ 1 - host_base
;
2232 static void print_imsm_capability(const struct imsm_orom
*orom
)
2234 printf(" Platform : Intel(R) ");
2235 if (orom
->capabilities
== 0 && orom
->driver_features
== 0)
2236 printf("Matrix Storage Manager\n");
2238 printf("Rapid Storage Technology%s\n",
2239 imsm_orom_is_enterprise(orom
) ? " enterprise" : "");
2240 if (orom
->major_ver
|| orom
->minor_ver
|| orom
->hotfix_ver
|| orom
->build
)
2241 printf(" Version : %d.%d.%d.%d\n", orom
->major_ver
,
2242 orom
->minor_ver
, orom
->hotfix_ver
, orom
->build
);
2243 printf(" RAID Levels :%s%s%s%s%s\n",
2244 imsm_orom_has_raid0(orom
) ? " raid0" : "",
2245 imsm_orom_has_raid1(orom
) ? " raid1" : "",
2246 imsm_orom_has_raid1e(orom
) ? " raid1e" : "",
2247 imsm_orom_has_raid10(orom
) ? " raid10" : "",
2248 imsm_orom_has_raid5(orom
) ? " raid5" : "");
2249 printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
2250 imsm_orom_has_chunk(orom
, 2) ? " 2k" : "",
2251 imsm_orom_has_chunk(orom
, 4) ? " 4k" : "",
2252 imsm_orom_has_chunk(orom
, 8) ? " 8k" : "",
2253 imsm_orom_has_chunk(orom
, 16) ? " 16k" : "",
2254 imsm_orom_has_chunk(orom
, 32) ? " 32k" : "",
2255 imsm_orom_has_chunk(orom
, 64) ? " 64k" : "",
2256 imsm_orom_has_chunk(orom
, 128) ? " 128k" : "",
2257 imsm_orom_has_chunk(orom
, 256) ? " 256k" : "",
2258 imsm_orom_has_chunk(orom
, 512) ? " 512k" : "",
2259 imsm_orom_has_chunk(orom
, 1024*1) ? " 1M" : "",
2260 imsm_orom_has_chunk(orom
, 1024*2) ? " 2M" : "",
2261 imsm_orom_has_chunk(orom
, 1024*4) ? " 4M" : "",
2262 imsm_orom_has_chunk(orom
, 1024*8) ? " 8M" : "",
2263 imsm_orom_has_chunk(orom
, 1024*16) ? " 16M" : "",
2264 imsm_orom_has_chunk(orom
, 1024*32) ? " 32M" : "",
2265 imsm_orom_has_chunk(orom
, 1024*64) ? " 64M" : "");
2266 printf(" 2TB volumes :%s supported\n",
2267 (orom
->attr
& IMSM_OROM_ATTR_2TB
)?"":" not");
2268 printf(" 2TB disks :%s supported\n",
2269 (orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
)?"":" not");
2270 printf(" Max Disks : %d\n", orom
->tds
);
2271 printf(" Max Volumes : %d per array, %d per %s\n",
2272 orom
->vpa
, orom
->vphba
,
2273 imsm_orom_is_nvme(orom
) ? "platform" : "controller");
2277 static void print_imsm_capability_export(const struct imsm_orom
*orom
)
2279 printf("MD_FIRMWARE_TYPE=imsm\n");
2280 if (orom
->major_ver
|| orom
->minor_ver
|| orom
->hotfix_ver
|| orom
->build
)
2281 printf("IMSM_VERSION=%d.%d.%d.%d\n", orom
->major_ver
, orom
->minor_ver
,
2282 orom
->hotfix_ver
, orom
->build
);
2283 printf("IMSM_SUPPORTED_RAID_LEVELS=%s%s%s%s%s\n",
2284 imsm_orom_has_raid0(orom
) ? "raid0 " : "",
2285 imsm_orom_has_raid1(orom
) ? "raid1 " : "",
2286 imsm_orom_has_raid1e(orom
) ? "raid1e " : "",
2287 imsm_orom_has_raid5(orom
) ? "raid10 " : "",
2288 imsm_orom_has_raid10(orom
) ? "raid5 " : "");
2289 printf("IMSM_SUPPORTED_CHUNK_SIZES=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
2290 imsm_orom_has_chunk(orom
, 2) ? "2k " : "",
2291 imsm_orom_has_chunk(orom
, 4) ? "4k " : "",
2292 imsm_orom_has_chunk(orom
, 8) ? "8k " : "",
2293 imsm_orom_has_chunk(orom
, 16) ? "16k " : "",
2294 imsm_orom_has_chunk(orom
, 32) ? "32k " : "",
2295 imsm_orom_has_chunk(orom
, 64) ? "64k " : "",
2296 imsm_orom_has_chunk(orom
, 128) ? "128k " : "",
2297 imsm_orom_has_chunk(orom
, 256) ? "256k " : "",
2298 imsm_orom_has_chunk(orom
, 512) ? "512k " : "",
2299 imsm_orom_has_chunk(orom
, 1024*1) ? "1M " : "",
2300 imsm_orom_has_chunk(orom
, 1024*2) ? "2M " : "",
2301 imsm_orom_has_chunk(orom
, 1024*4) ? "4M " : "",
2302 imsm_orom_has_chunk(orom
, 1024*8) ? "8M " : "",
2303 imsm_orom_has_chunk(orom
, 1024*16) ? "16M " : "",
2304 imsm_orom_has_chunk(orom
, 1024*32) ? "32M " : "",
2305 imsm_orom_has_chunk(orom
, 1024*64) ? "64M " : "");
2306 printf("IMSM_2TB_VOLUMES=%s\n",(orom
->attr
& IMSM_OROM_ATTR_2TB
) ? "yes" : "no");
2307 printf("IMSM_2TB_DISKS=%s\n",(orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
) ? "yes" : "no");
2308 printf("IMSM_MAX_DISKS=%d\n",orom
->tds
);
2309 printf("IMSM_MAX_VOLUMES_PER_ARRAY=%d\n",orom
->vpa
);
2310 printf("IMSM_MAX_VOLUMES_PER_CONTROLLER=%d\n",orom
->vphba
);
2313 static int detail_platform_imsm(int verbose
, int enumerate_only
, char *controller_path
)
2315 /* There are two components to imsm platform support, the ahci SATA
2316 * controller and the option-rom. To find the SATA controller we
2317 * simply look in /sys/bus/pci/drivers/ahci to see if an ahci
2318 * controller with the Intel vendor id is present. This approach
2319 * allows mdadm to leverage the kernel's ahci detection logic, with the
2320 * caveat that if ahci.ko is not loaded mdadm will not be able to
2321 * detect platform raid capabilities. The option-rom resides in a
2322 * platform "Adapter ROM". We scan for its signature to retrieve the
2323 * platform capabilities. If raid support is disabled in the BIOS the
2324 * option-rom capability structure will not be available.
2326 struct sys_dev
*list
, *hba
;
2331 if (enumerate_only
) {
2332 if (check_env("IMSM_NO_PLATFORM"))
2334 list
= find_intel_devices();
2337 for (hba
= list
; hba
; hba
= hba
->next
) {
2338 if (find_imsm_capability(hba
)) {
2348 list
= find_intel_devices();
2351 pr_err("no active Intel(R) RAID controller found.\n");
2353 } else if (verbose
> 0)
2354 print_found_intel_controllers(list
);
2356 for (hba
= list
; hba
; hba
= hba
->next
) {
2357 if (controller_path
&& (compare_paths(hba
->path
, controller_path
) != 0))
2359 if (!find_imsm_capability(hba
)) {
2361 pr_err("imsm capabilities not found for controller: %s (type %s)\n",
2362 hba
->type
== SYS_DEV_VMD
? vmd_domain_to_controller(hba
, buf
) : hba
->path
,
2363 get_sys_dev_type(hba
->type
));
2369 if (controller_path
&& result
== 1) {
2370 pr_err("no active Intel(R) RAID controller found under %s\n",
2375 const struct orom_entry
*entry
;
2377 for (entry
= orom_entries
; entry
; entry
= entry
->next
) {
2378 if (entry
->type
== SYS_DEV_VMD
) {
2379 print_imsm_capability(&entry
->orom
);
2380 for (hba
= list
; hba
; hba
= hba
->next
) {
2381 if (hba
->type
== SYS_DEV_VMD
) {
2383 printf(" I/O Controller : %s (%s)\n",
2384 vmd_domain_to_controller(hba
, buf
), get_sys_dev_type(hba
->type
));
2385 if (print_vmd_attached_devs(hba
)) {
2387 pr_err("failed to get devices attached to VMD domain.\n");
2396 print_imsm_capability(&entry
->orom
);
2397 if (entry
->type
== SYS_DEV_NVME
) {
2398 for (hba
= list
; hba
; hba
= hba
->next
) {
2399 if (hba
->type
== SYS_DEV_NVME
)
2400 printf(" NVMe Device : %s\n", hba
->path
);
2406 struct devid_list
*devid
;
2407 for (devid
= entry
->devid_list
; devid
; devid
= devid
->next
) {
2408 hba
= device_by_id(devid
->devid
);
2412 printf(" I/O Controller : %s (%s)\n",
2413 hba
->path
, get_sys_dev_type(hba
->type
));
2414 if (hba
->type
== SYS_DEV_SATA
) {
2415 host_base
= ahci_get_port_count(hba
->path
, &port_count
);
2416 if (ahci_enumerate_ports(hba
->path
, port_count
, host_base
, verbose
)) {
2418 pr_err("failed to enumerate ports on SATA controller at %s.\n", hba
->pci_id
);
2429 static int export_detail_platform_imsm(int verbose
, char *controller_path
)
2431 struct sys_dev
*list
, *hba
;
2434 list
= find_intel_devices();
2437 pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_INTEL_DEVICES\n");
2442 for (hba
= list
; hba
; hba
= hba
->next
) {
2443 if (controller_path
&& (compare_paths(hba
->path
,controller_path
) != 0))
2445 if (!find_imsm_capability(hba
) && verbose
> 0) {
2447 pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_IMSM_CAPABLE_DEVICE_UNDER_%s\n",
2448 hba
->type
== SYS_DEV_VMD
? vmd_domain_to_controller(hba
, buf
) : hba
->path
);
2454 const struct orom_entry
*entry
;
2456 for (entry
= orom_entries
; entry
; entry
= entry
->next
) {
2457 if (entry
->type
== SYS_DEV_VMD
) {
2458 for (hba
= list
; hba
; hba
= hba
->next
)
2459 print_imsm_capability_export(&entry
->orom
);
2462 print_imsm_capability_export(&entry
->orom
);
2470 static int match_home_imsm(struct supertype
*st
, char *homehost
)
2472 /* the imsm metadata format does not specify any host
2473 * identification information. We return -1 since we can never
2474 * confirm nor deny whether a given array is "meant" for this
2475 * host. We rely on compare_super and the 'family_num' fields to
2476 * exclude member disks that do not belong, and we rely on
2477 * mdadm.conf to specify the arrays that should be assembled.
2478 * Auto-assembly may still pick up "foreign" arrays.
2484 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
2486 /* The uuid returned here is used for:
2487 * uuid to put into bitmap file (Create, Grow)
2488 * uuid for backup header when saving critical section (Grow)
2489 * comparing uuids when re-adding a device into an array
2490 * In these cases the uuid required is that of the data-array,
2491 * not the device-set.
2492 * uuid to recognise same set when adding a missing device back
2493 * to an array. This is a uuid for the device-set.
2495 * For each of these we can make do with a truncated
2496 * or hashed uuid rather than the original, as long as
2498 * In each case the uuid required is that of the data-array,
2499 * not the device-set.
2501 /* imsm does not track uuid's so we synthesis one using sha1 on
2502 * - The signature (Which is constant for all imsm array, but no matter)
2503 * - the orig_family_num of the container
2504 * - the index number of the volume
2505 * - the 'serial' number of the volume.
2506 * Hopefully these are all constant.
2508 struct intel_super
*super
= st
->sb
;
2511 struct sha1_ctx ctx
;
2512 struct imsm_dev
*dev
= NULL
;
2515 /* some mdadm versions failed to set ->orig_family_num, in which
2516 * case fall back to ->family_num. orig_family_num will be
2517 * fixed up with the first metadata update.
2519 family_num
= super
->anchor
->orig_family_num
;
2520 if (family_num
== 0)
2521 family_num
= super
->anchor
->family_num
;
2522 sha1_init_ctx(&ctx
);
2523 sha1_process_bytes(super
->anchor
->sig
, MPB_SIG_LEN
, &ctx
);
2524 sha1_process_bytes(&family_num
, sizeof(__u32
), &ctx
);
2525 if (super
->current_vol
>= 0)
2526 dev
= get_imsm_dev(super
, super
->current_vol
);
2528 __u32 vol
= super
->current_vol
;
2529 sha1_process_bytes(&vol
, sizeof(vol
), &ctx
);
2530 sha1_process_bytes(dev
->volume
, MAX_RAID_SERIAL_LEN
, &ctx
);
2532 sha1_finish_ctx(&ctx
, buf
);
2533 memcpy(uuid
, buf
, 4*4);
2538 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
2540 __u8
*v
= get_imsm_version(mpb
);
2541 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
2542 char major
[] = { 0, 0, 0 };
2543 char minor
[] = { 0 ,0, 0 };
2544 char patch
[] = { 0, 0, 0 };
2545 char *ver_parse
[] = { major
, minor
, patch
};
2549 while (*v
!= '\0' && v
< end
) {
2550 if (*v
!= '.' && j
< 2)
2551 ver_parse
[i
][j
++] = *v
;
2559 *m
= strtol(minor
, NULL
, 0);
2560 *p
= strtol(patch
, NULL
, 0);
2564 static __u32
migr_strip_blocks_resync(struct imsm_dev
*dev
)
2566 /* migr_strip_size when repairing or initializing parity */
2567 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2568 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2570 switch (get_imsm_raid_level(map
)) {
2575 return 128*1024 >> 9;
2579 static __u32
migr_strip_blocks_rebuild(struct imsm_dev
*dev
)
2581 /* migr_strip_size when rebuilding a degraded disk, no idea why
2582 * this is different than migr_strip_size_resync(), but it's good
2585 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
2586 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2588 switch (get_imsm_raid_level(map
)) {
2591 if (map
->num_members
% map
->num_domains
== 0)
2592 return 128*1024 >> 9;
2596 return max((__u32
) 64*1024 >> 9, chunk
);
2598 return 128*1024 >> 9;
2602 static __u32
num_stripes_per_unit_resync(struct imsm_dev
*dev
)
2604 struct imsm_map
*lo
= get_imsm_map(dev
, MAP_0
);
2605 struct imsm_map
*hi
= get_imsm_map(dev
, MAP_1
);
2606 __u32 lo_chunk
= __le32_to_cpu(lo
->blocks_per_strip
);
2607 __u32 hi_chunk
= __le32_to_cpu(hi
->blocks_per_strip
);
2609 return max((__u32
) 1, hi_chunk
/ lo_chunk
);
2612 static __u32
num_stripes_per_unit_rebuild(struct imsm_dev
*dev
)
2614 struct imsm_map
*lo
= get_imsm_map(dev
, MAP_0
);
2615 int level
= get_imsm_raid_level(lo
);
2617 if (level
== 1 || level
== 10) {
2618 struct imsm_map
*hi
= get_imsm_map(dev
, MAP_1
);
2620 return hi
->num_domains
;
2622 return num_stripes_per_unit_resync(dev
);
2625 static __u8
imsm_num_data_members(struct imsm_dev
*dev
, int second_map
)
2627 /* named 'imsm_' because raid0, raid1 and raid10
2628 * counter-intuitively have the same number of data disks
2630 struct imsm_map
*map
= get_imsm_map(dev
, second_map
);
2632 switch (get_imsm_raid_level(map
)) {
2634 return map
->num_members
;
2638 return map
->num_members
/2;
2640 return map
->num_members
- 1;
2642 dprintf("unsupported raid level\n");
2647 static __u32
parity_segment_depth(struct imsm_dev
*dev
)
2649 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2650 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2652 switch(get_imsm_raid_level(map
)) {
2655 return chunk
* map
->num_domains
;
2657 return chunk
* map
->num_members
;
2663 static __u32
map_migr_block(struct imsm_dev
*dev
, __u32 block
)
2665 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
2666 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2667 __u32 strip
= block
/ chunk
;
2669 switch (get_imsm_raid_level(map
)) {
2672 __u32 vol_strip
= (strip
* map
->num_domains
) + 1;
2673 __u32 vol_stripe
= vol_strip
/ map
->num_members
;
2675 return vol_stripe
* chunk
+ block
% chunk
;
2677 __u32 stripe
= strip
/ (map
->num_members
- 1);
2679 return stripe
* chunk
+ block
% chunk
;
2686 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
2687 struct imsm_dev
*dev
)
2689 /* calculate the conversion factor between per member 'blocks'
2690 * (md/{resync,rebuild}_start) and imsm migration units, return
2691 * 0 for the 'not migrating' and 'unsupported migration' cases
2693 if (!dev
->vol
.migr_state
)
2696 switch (migr_type(dev
)) {
2697 case MIGR_GEN_MIGR
: {
2698 struct migr_record
*migr_rec
= super
->migr_rec
;
2699 return __le32_to_cpu(migr_rec
->blocks_per_unit
);
2704 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2705 __u32 stripes_per_unit
;
2706 __u32 blocks_per_unit
;
2715 /* yes, this is really the translation of migr_units to
2716 * per-member blocks in the 'resync' case
2718 stripes_per_unit
= num_stripes_per_unit_resync(dev
);
2719 migr_chunk
= migr_strip_blocks_resync(dev
);
2720 disks
= imsm_num_data_members(dev
, MAP_0
);
2721 blocks_per_unit
= stripes_per_unit
* migr_chunk
* disks
;
2722 stripe
= __le16_to_cpu(map
->blocks_per_strip
) * disks
;
2723 segment
= blocks_per_unit
/ stripe
;
2724 block_rel
= blocks_per_unit
- segment
* stripe
;
2725 parity_depth
= parity_segment_depth(dev
);
2726 block_map
= map_migr_block(dev
, block_rel
);
2727 return block_map
+ parity_depth
* segment
;
2729 case MIGR_REBUILD
: {
2730 __u32 stripes_per_unit
;
2733 stripes_per_unit
= num_stripes_per_unit_rebuild(dev
);
2734 migr_chunk
= migr_strip_blocks_rebuild(dev
);
2735 return migr_chunk
* stripes_per_unit
;
2737 case MIGR_STATE_CHANGE
:
2743 static int imsm_level_to_layout(int level
)
2751 return ALGORITHM_LEFT_ASYMMETRIC
;
2758 /*******************************************************************************
2759 * Function: read_imsm_migr_rec
2760 * Description: Function reads imsm migration record from last sector of disk
2762 * fd : disk descriptor
2763 * super : metadata info
2767 ******************************************************************************/
2768 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
)
2771 unsigned int sector_size
= super
->sector_size
;
2772 unsigned long long dsize
;
2774 get_dev_size(fd
, NULL
, &dsize
);
2775 if (lseek64(fd
, dsize
- (sector_size
*MIGR_REC_SECTOR_POSITION
),
2777 pr_err("Cannot seek to anchor block: %s\n",
2781 if (read(fd
, super
->migr_rec_buf
,
2782 MIGR_REC_BUF_SECTORS
*sector_size
) !=
2783 MIGR_REC_BUF_SECTORS
*sector_size
) {
2784 pr_err("Cannot read migr record block: %s\n",
2789 if (sector_size
== 4096)
2790 convert_from_4k_imsm_migr_rec(super
);
2796 static struct imsm_dev
*imsm_get_device_during_migration(
2797 struct intel_super
*super
)
2800 struct intel_dev
*dv
;
2802 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
2803 if (is_gen_migration(dv
->dev
))
2809 /*******************************************************************************
2810 * Function: load_imsm_migr_rec
2811 * Description: Function reads imsm migration record (it is stored at the last
2814 * super : imsm internal array info
2815 * info : general array info
2819 * -2 : no migration in progress
2820 ******************************************************************************/
2821 static int load_imsm_migr_rec(struct intel_super
*super
, struct mdinfo
*info
)
2828 struct imsm_dev
*dev
;
2829 struct imsm_map
*map
;
2832 /* find map under migration */
2833 dev
= imsm_get_device_during_migration(super
);
2834 /* nothing to load,no migration in progress?
2840 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
2841 /* read only from one of the first two slots */
2842 if ((sd
->disk
.raid_disk
< 0) ||
2843 (sd
->disk
.raid_disk
> 1))
2846 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2847 fd
= dev_open(nm
, O_RDONLY
);
2853 map
= get_imsm_map(dev
, MAP_0
);
2854 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2855 /* skip spare and failed disks
2859 /* read only from one of the first two slots */
2861 slot
= get_imsm_disk_slot(map
, dl
->index
);
2862 if (map
== NULL
|| slot
> 1 || slot
< 0)
2864 sprintf(nm
, "%d:%d", dl
->major
, dl
->minor
);
2865 fd
= dev_open(nm
, O_RDONLY
);
2872 retval
= read_imsm_migr_rec(fd
, super
);
2881 /*******************************************************************************
2882 * function: imsm_create_metadata_checkpoint_update
2883 * Description: It creates update for checkpoint change.
2885 * super : imsm internal array info
2886 * u : pointer to prepared update
2889 * If length is equal to 0, input pointer u contains no update
2890 ******************************************************************************/
2891 static int imsm_create_metadata_checkpoint_update(
2892 struct intel_super
*super
,
2893 struct imsm_update_general_migration_checkpoint
**u
)
2896 int update_memory_size
= 0;
2898 dprintf("(enter)\n");
2904 /* size of all update data without anchor */
2905 update_memory_size
=
2906 sizeof(struct imsm_update_general_migration_checkpoint
);
2908 *u
= xcalloc(1, update_memory_size
);
2910 dprintf("error: cannot get memory\n");
2913 (*u
)->type
= update_general_migration_checkpoint
;
2914 (*u
)->curr_migr_unit
= __le32_to_cpu(super
->migr_rec
->curr_migr_unit
);
2915 dprintf("prepared for %u\n", (*u
)->curr_migr_unit
);
2917 return update_memory_size
;
2920 static void imsm_update_metadata_locally(struct supertype
*st
,
2921 void *buf
, int len
);
2923 /*******************************************************************************
2924 * Function: write_imsm_migr_rec
2925 * Description: Function writes imsm migration record
2926 * (at the last sector of disk)
2928 * super : imsm internal array info
2932 ******************************************************************************/
2933 static int write_imsm_migr_rec(struct supertype
*st
)
2935 struct intel_super
*super
= st
->sb
;
2936 unsigned int sector_size
= super
->sector_size
;
2937 unsigned long long dsize
;
2943 struct imsm_update_general_migration_checkpoint
*u
;
2944 struct imsm_dev
*dev
;
2945 struct imsm_map
*map
;
2947 /* find map under migration */
2948 dev
= imsm_get_device_during_migration(super
);
2949 /* if no migration, write buffer anyway to clear migr_record
2950 * on disk based on first available device
2953 dev
= get_imsm_dev(super
, super
->current_vol
< 0 ? 0 :
2954 super
->current_vol
);
2956 map
= get_imsm_map(dev
, MAP_0
);
2958 if (sector_size
== 4096)
2959 convert_to_4k_imsm_migr_rec(super
);
2960 for (sd
= super
->disks
; sd
; sd
= sd
->next
) {
2963 /* skip failed and spare devices */
2966 /* write to 2 first slots only */
2968 slot
= get_imsm_disk_slot(map
, sd
->index
);
2969 if (map
== NULL
|| slot
> 1 || slot
< 0)
2972 sprintf(nm
, "%d:%d", sd
->major
, sd
->minor
);
2973 fd
= dev_open(nm
, O_RDWR
);
2976 get_dev_size(fd
, NULL
, &dsize
);
2977 if (lseek64(fd
, dsize
- (MIGR_REC_SECTOR_POSITION
*sector_size
),
2979 pr_err("Cannot seek to anchor block: %s\n",
2983 if (write(fd
, super
->migr_rec_buf
,
2984 MIGR_REC_BUF_SECTORS
*sector_size
) !=
2985 MIGR_REC_BUF_SECTORS
*sector_size
) {
2986 pr_err("Cannot write migr record block: %s\n",
2993 if (sector_size
== 4096)
2994 convert_from_4k_imsm_migr_rec(super
);
2995 /* update checkpoint information in metadata */
2996 len
= imsm_create_metadata_checkpoint_update(super
, &u
);
2998 dprintf("imsm: Cannot prepare update\n");
3001 /* update metadata locally */
3002 imsm_update_metadata_locally(st
, u
, len
);
3003 /* and possibly remotely */
3004 if (st
->update_tail
) {
3005 append_metadata_update(st
, u
, len
);
3006 /* during reshape we do all work inside metadata handler
3007 * manage_reshape(), so metadata update has to be triggered
3010 flush_metadata_updates(st
);
3011 st
->update_tail
= &st
->updates
;
3021 #endif /* MDASSEMBLE */
3023 /* spare/missing disks activations are not allowe when
3024 * array/container performs reshape operation, because
3025 * all arrays in container works on the same disks set
3027 int imsm_reshape_blocks_arrays_changes(struct intel_super
*super
)
3030 struct intel_dev
*i_dev
;
3031 struct imsm_dev
*dev
;
3033 /* check whole container
3035 for (i_dev
= super
->devlist
; i_dev
; i_dev
= i_dev
->next
) {
3037 if (is_gen_migration(dev
)) {
3038 /* No repair during any migration in container
3046 static unsigned long long imsm_component_size_aligment_check(int level
,
3048 unsigned int sector_size
,
3049 unsigned long long component_size
)
3051 unsigned int component_size_alligment
;
3053 /* check component size aligment
3055 component_size_alligment
= component_size
% (chunk_size
/sector_size
);
3057 dprintf("(Level: %i, chunk_size = %i, component_size = %llu), component_size_alligment = %u\n",
3058 level
, chunk_size
, component_size
,
3059 component_size_alligment
);
3061 if (component_size_alligment
&& (level
!= 1) && (level
!= UnSet
)) {
3062 dprintf("imsm: reported component size alligned from %llu ",
3064 component_size
-= component_size_alligment
;
3065 dprintf_cont("to %llu (%i).\n",
3066 component_size
, component_size_alligment
);
3069 return component_size
;
3072 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
, char *dmap
)
3074 struct intel_super
*super
= st
->sb
;
3075 struct migr_record
*migr_rec
= super
->migr_rec
;
3076 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
3077 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
3078 struct imsm_map
*prev_map
= get_imsm_map(dev
, MAP_1
);
3079 struct imsm_map
*map_to_analyse
= map
;
3081 int map_disks
= info
->array
.raid_disks
;
3083 memset(info
, 0, sizeof(*info
));
3085 map_to_analyse
= prev_map
;
3087 dl
= super
->current_disk
;
3089 info
->container_member
= super
->current_vol
;
3090 info
->array
.raid_disks
= map
->num_members
;
3091 info
->array
.level
= get_imsm_raid_level(map_to_analyse
);
3092 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
3093 info
->array
.md_minor
= -1;
3094 info
->array
.ctime
= 0;
3095 info
->array
.utime
= 0;
3096 info
->array
.chunk_size
=
3097 __le16_to_cpu(map_to_analyse
->blocks_per_strip
) << 9;
3098 info
->array
.state
= !dev
->vol
.dirty
;
3099 info
->custom_array_size
= __le32_to_cpu(dev
->size_high
);
3100 info
->custom_array_size
<<= 32;
3101 info
->custom_array_size
|= __le32_to_cpu(dev
->size_low
);
3102 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
3104 if (is_gen_migration(dev
)) {
3105 info
->reshape_active
= 1;
3106 info
->new_level
= get_imsm_raid_level(map
);
3107 info
->new_layout
= imsm_level_to_layout(info
->new_level
);
3108 info
->new_chunk
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
3109 info
->delta_disks
= map
->num_members
- prev_map
->num_members
;
3110 if (info
->delta_disks
) {
3111 /* this needs to be applied to every array
3114 info
->reshape_active
= CONTAINER_RESHAPE
;
3116 /* We shape information that we give to md might have to be
3117 * modify to cope with md's requirement for reshaping arrays.
3118 * For example, when reshaping a RAID0, md requires it to be
3119 * presented as a degraded RAID4.
3120 * Also if a RAID0 is migrating to a RAID5 we need to specify
3121 * the array as already being RAID5, but the 'before' layout
3122 * is a RAID4-like layout.
3124 switch (info
->array
.level
) {
3126 switch(info
->new_level
) {
3128 /* conversion is happening as RAID4 */
3129 info
->array
.level
= 4;
3130 info
->array
.raid_disks
+= 1;
3133 /* conversion is happening as RAID5 */
3134 info
->array
.level
= 5;
3135 info
->array
.layout
= ALGORITHM_PARITY_N
;
3136 info
->delta_disks
-= 1;
3139 /* FIXME error message */
3140 info
->array
.level
= UnSet
;
3146 info
->new_level
= UnSet
;
3147 info
->new_layout
= UnSet
;
3148 info
->new_chunk
= info
->array
.chunk_size
;
3149 info
->delta_disks
= 0;
3153 info
->disk
.major
= dl
->major
;
3154 info
->disk
.minor
= dl
->minor
;
3155 info
->disk
.number
= dl
->index
;
3156 info
->disk
.raid_disk
= get_imsm_disk_slot(map_to_analyse
,
3160 info
->data_offset
= pba_of_lba0(map_to_analyse
);
3162 if (info
->array
.level
== 5) {
3163 info
->component_size
= num_data_stripes(map_to_analyse
) *
3164 map_to_analyse
->blocks_per_strip
;
3166 info
->component_size
= blocks_per_member(map_to_analyse
);
3169 info
->component_size
= imsm_component_size_aligment_check(
3171 info
->array
.chunk_size
,
3173 info
->component_size
);
3174 info
->bb
.supported
= 0;
3176 memset(info
->uuid
, 0, sizeof(info
->uuid
));
3177 info
->recovery_start
= MaxSector
;
3179 info
->reshape_progress
= 0;
3180 info
->resync_start
= MaxSector
;
3181 if ((map_to_analyse
->map_state
== IMSM_T_STATE_UNINITIALIZED
||
3183 imsm_reshape_blocks_arrays_changes(super
) == 0) {
3184 info
->resync_start
= 0;
3186 if (dev
->vol
.migr_state
) {
3187 switch (migr_type(dev
)) {
3190 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
3192 __u64 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
3194 info
->resync_start
= blocks_per_unit
* units
;
3197 case MIGR_GEN_MIGR
: {
3198 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
3200 __u64 units
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
3201 unsigned long long array_blocks
;
3204 if (__le32_to_cpu(migr_rec
->ascending_migr
) &&
3206 (__le32_to_cpu(migr_rec
->num_migr_units
)-1)) &&
3207 (super
->migr_rec
->rec_status
==
3208 __cpu_to_le32(UNIT_SRC_IN_CP_AREA
)))
3211 info
->reshape_progress
= blocks_per_unit
* units
;
3213 dprintf("IMSM: General Migration checkpoint : %llu (%llu) -> read reshape progress : %llu\n",
3214 (unsigned long long)units
,
3215 (unsigned long long)blocks_per_unit
,
3216 info
->reshape_progress
);
3218 used_disks
= imsm_num_data_members(dev
, MAP_1
);
3219 if (used_disks
> 0) {
3220 array_blocks
= blocks_per_member(map
) *
3222 /* round array size down to closest MB
3224 info
->custom_array_size
= (array_blocks
3225 >> SECT_PER_MB_SHIFT
)
3226 << SECT_PER_MB_SHIFT
;
3230 /* we could emulate the checkpointing of
3231 * 'sync_action=check' migrations, but for now
3232 * we just immediately complete them
3235 /* this is handled by container_content_imsm() */
3236 case MIGR_STATE_CHANGE
:
3237 /* FIXME handle other migrations */
3239 /* we are not dirty, so... */
3240 info
->resync_start
= MaxSector
;
3244 strncpy(info
->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
3245 info
->name
[MAX_RAID_SERIAL_LEN
] = 0;
3247 info
->array
.major_version
= -1;
3248 info
->array
.minor_version
= -2;
3249 sprintf(info
->text_version
, "/%s/%d", st
->container_devnm
, info
->container_member
);
3250 info
->safe_mode_delay
= 4000; /* 4 secs like the Matrix driver */
3251 uuid_from_super_imsm(st
, info
->uuid
);
3255 for (i
=0; i
<map_disks
; i
++) {
3257 if (i
< info
->array
.raid_disks
) {
3258 struct imsm_disk
*dsk
;
3259 j
= get_imsm_disk_idx(dev
, i
, MAP_X
);
3260 dsk
= get_imsm_disk(super
, j
);
3261 if (dsk
&& (dsk
->status
& CONFIGURED_DISK
))
3268 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
,
3269 int failed
, int look_in_map
);
3271 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
,
3275 static void manage_second_map(struct intel_super
*super
, struct imsm_dev
*dev
)
3277 if (is_gen_migration(dev
)) {
3280 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
3282 failed
= imsm_count_failed(super
, dev
, MAP_1
);
3283 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_1
);
3284 if (map2
->map_state
!= map_state
) {
3285 map2
->map_state
= map_state
;
3286 super
->updates_pending
++;
3292 static struct imsm_disk
*get_imsm_missing(struct intel_super
*super
, __u8 index
)
3296 for (d
= super
->missing
; d
; d
= d
->next
)
3297 if (d
->index
== index
)
3302 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
)
3304 struct intel_super
*super
= st
->sb
;
3305 struct imsm_disk
*disk
;
3306 int map_disks
= info
->array
.raid_disks
;
3307 int max_enough
= -1;
3309 struct imsm_super
*mpb
;
3311 if (super
->current_vol
>= 0) {
3312 getinfo_super_imsm_volume(st
, info
, map
);
3315 memset(info
, 0, sizeof(*info
));
3317 /* Set raid_disks to zero so that Assemble will always pull in valid
3320 info
->array
.raid_disks
= 0;
3321 info
->array
.level
= LEVEL_CONTAINER
;
3322 info
->array
.layout
= 0;
3323 info
->array
.md_minor
= -1;
3324 info
->array
.ctime
= 0; /* N/A for imsm */
3325 info
->array
.utime
= 0;
3326 info
->array
.chunk_size
= 0;
3328 info
->disk
.major
= 0;
3329 info
->disk
.minor
= 0;
3330 info
->disk
.raid_disk
= -1;
3331 info
->reshape_active
= 0;
3332 info
->array
.major_version
= -1;
3333 info
->array
.minor_version
= -2;
3334 strcpy(info
->text_version
, "imsm");
3335 info
->safe_mode_delay
= 0;
3336 info
->disk
.number
= -1;
3337 info
->disk
.state
= 0;
3339 info
->recovery_start
= MaxSector
;
3340 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
3341 info
->bb
.supported
= 0;
3343 /* do we have the all the insync disks that we expect? */
3344 mpb
= super
->anchor
;
3346 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
3347 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
3348 int failed
, enough
, j
, missing
= 0;
3349 struct imsm_map
*map
;
3352 failed
= imsm_count_failed(super
, dev
, MAP_0
);
3353 state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
3354 map
= get_imsm_map(dev
, MAP_0
);
3356 /* any newly missing disks?
3357 * (catches single-degraded vs double-degraded)
3359 for (j
= 0; j
< map
->num_members
; j
++) {
3360 __u32 ord
= get_imsm_ord_tbl_ent(dev
, j
, MAP_0
);
3361 __u32 idx
= ord_to_idx(ord
);
3363 if (!(ord
& IMSM_ORD_REBUILD
) &&
3364 get_imsm_missing(super
, idx
)) {
3370 if (state
== IMSM_T_STATE_FAILED
)
3372 else if (state
== IMSM_T_STATE_DEGRADED
&&
3373 (state
!= map
->map_state
|| missing
))
3375 else /* we're normal, or already degraded */
3377 if (is_gen_migration(dev
) && missing
) {
3378 /* during general migration we need all disks
3379 * that process is running on.
3380 * No new missing disk is allowed.
3384 /* no more checks necessary
3388 /* in the missing/failed disk case check to see
3389 * if at least one array is runnable
3391 max_enough
= max(max_enough
, enough
);
3393 dprintf("enough: %d\n", max_enough
);
3394 info
->container_enough
= max_enough
;
3397 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
3399 disk
= &super
->disks
->disk
;
3400 info
->data_offset
= total_blocks(&super
->disks
->disk
) - reserved
;
3401 info
->component_size
= reserved
;
3402 info
->disk
.state
= is_configured(disk
) ? (1 << MD_DISK_ACTIVE
) : 0;
3403 /* we don't change info->disk.raid_disk here because
3404 * this state will be finalized in mdmon after we have
3405 * found the 'most fresh' version of the metadata
3407 info
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
3408 info
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
3411 /* only call uuid_from_super_imsm when this disk is part of a populated container,
3412 * ->compare_super may have updated the 'num_raid_devs' field for spares
3414 if (info
->disk
.state
& (1 << MD_DISK_SYNC
) || super
->anchor
->num_raid_devs
)
3415 uuid_from_super_imsm(st
, info
->uuid
);
3417 memcpy(info
->uuid
, uuid_zero
, sizeof(uuid_zero
));
3419 /* I don't know how to compute 'map' on imsm, so use safe default */
3422 for (i
= 0; i
< map_disks
; i
++)
3428 /* allocates memory and fills disk in mdinfo structure
3429 * for each disk in array */
3430 struct mdinfo
*getinfo_super_disks_imsm(struct supertype
*st
)
3432 struct mdinfo
*mddev
;
3433 struct intel_super
*super
= st
->sb
;
3434 struct imsm_disk
*disk
;
3437 if (!super
|| !super
->disks
)
3440 mddev
= xcalloc(1, sizeof(*mddev
));
3444 tmp
= xcalloc(1, sizeof(*tmp
));
3446 tmp
->next
= mddev
->devs
;
3448 tmp
->disk
.number
= count
++;
3449 tmp
->disk
.major
= dl
->major
;
3450 tmp
->disk
.minor
= dl
->minor
;
3451 tmp
->disk
.state
= is_configured(disk
) ?
3452 (1 << MD_DISK_ACTIVE
) : 0;
3453 tmp
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
3454 tmp
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
3455 tmp
->disk
.raid_disk
= -1;
3461 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
3462 char *update
, char *devname
, int verbose
,
3463 int uuid_set
, char *homehost
)
3465 /* For 'assemble' and 'force' we need to return non-zero if any
3466 * change was made. For others, the return value is ignored.
3467 * Update options are:
3468 * force-one : This device looks a bit old but needs to be included,
3469 * update age info appropriately.
3470 * assemble: clear any 'faulty' flag to allow this device to
3472 * force-array: Array is degraded but being forced, mark it clean
3473 * if that will be needed to assemble it.
3475 * newdev: not used ????
3476 * grow: Array has gained a new device - this is currently for
3478 * resync: mark as dirty so a resync will happen.
3479 * name: update the name - preserving the homehost
3480 * uuid: Change the uuid of the array to match watch is given
3482 * Following are not relevant for this imsm:
3483 * sparc2.2 : update from old dodgey metadata
3484 * super-minor: change the preferred_minor number
3485 * summaries: update redundant counters.
3486 * homehost: update the recorded homehost
3487 * _reshape_progress: record new reshape_progress position.
3490 struct intel_super
*super
= st
->sb
;
3491 struct imsm_super
*mpb
;
3493 /* we can only update container info */
3494 if (!super
|| super
->current_vol
>= 0 || !super
->anchor
)
3497 mpb
= super
->anchor
;
3499 if (strcmp(update
, "uuid") == 0) {
3500 /* We take this to mean that the family_num should be updated.
3501 * However that is much smaller than the uuid so we cannot really
3502 * allow an explicit uuid to be given. And it is hard to reliably
3504 * So if !uuid_set we know the current uuid is random and just used
3505 * the first 'int' and copy it to the other 3 positions.
3506 * Otherwise we require the 4 'int's to be the same as would be the
3507 * case if we are using a random uuid. So an explicit uuid will be
3508 * accepted as long as all for ints are the same... which shouldn't hurt
3511 info
->uuid
[1] = info
->uuid
[2] = info
->uuid
[3] = info
->uuid
[0];
3514 if (info
->uuid
[0] != info
->uuid
[1] ||
3515 info
->uuid
[1] != info
->uuid
[2] ||
3516 info
->uuid
[2] != info
->uuid
[3])
3522 mpb
->orig_family_num
= info
->uuid
[0];
3523 } else if (strcmp(update
, "assemble") == 0)
3528 /* successful update? recompute checksum */
3530 mpb
->check_sum
= __le32_to_cpu(__gen_imsm_checksum(mpb
));
3535 static size_t disks_to_mpb_size(int disks
)
3539 size
= sizeof(struct imsm_super
);
3540 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
3541 size
+= 2 * sizeof(struct imsm_dev
);
3542 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
3543 size
+= (4 - 2) * sizeof(struct imsm_map
);
3544 /* 4 possible disk_ord_tbl's */
3545 size
+= 4 * (disks
- 1) * sizeof(__u32
);
3546 /* maximum bbm log */
3547 size
+= sizeof(struct bbm_log
);
3552 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
,
3553 unsigned long long data_offset
)
3555 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
3558 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
3561 static void free_devlist(struct intel_super
*super
)
3563 struct intel_dev
*dv
;
3565 while (super
->devlist
) {
3566 dv
= super
->devlist
->next
;
3567 free(super
->devlist
->dev
);
3568 free(super
->devlist
);
3569 super
->devlist
= dv
;
3573 static void imsm_copy_dev(struct imsm_dev
*dest
, struct imsm_dev
*src
)
3575 memcpy(dest
, src
, sizeof_imsm_dev(src
, 0));
3578 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
3582 * 0 same, or first was empty, and second was copied
3583 * 1 second had wrong number
3585 * 3 wrong other info
3587 struct intel_super
*first
= st
->sb
;
3588 struct intel_super
*sec
= tst
->sb
;
3595 /* in platform dependent environment test if the disks
3596 * use the same Intel hba
3597 * If not on Intel hba at all, allow anything.
3599 if (!check_env("IMSM_NO_PLATFORM") && first
->hba
&& sec
->hba
) {
3600 if (first
->hba
->type
!= sec
->hba
->type
) {
3602 "HBAs of devices do not match %s != %s\n",
3603 get_sys_dev_type(first
->hba
->type
),
3604 get_sys_dev_type(sec
->hba
->type
));
3607 if (first
->orom
!= sec
->orom
) {
3609 "HBAs of devices do not match %s != %s\n",
3610 first
->hba
->pci_id
, sec
->hba
->pci_id
);
3615 /* if an anchor does not have num_raid_devs set then it is a free
3618 if (first
->anchor
->num_raid_devs
> 0 &&
3619 sec
->anchor
->num_raid_devs
> 0) {
3620 /* Determine if these disks might ever have been
3621 * related. Further disambiguation can only take place
3622 * in load_super_imsm_all
3624 __u32 first_family
= first
->anchor
->orig_family_num
;
3625 __u32 sec_family
= sec
->anchor
->orig_family_num
;
3627 if (memcmp(first
->anchor
->sig
, sec
->anchor
->sig
,
3628 MAX_SIGNATURE_LENGTH
) != 0)
3631 if (first_family
== 0)
3632 first_family
= first
->anchor
->family_num
;
3633 if (sec_family
== 0)
3634 sec_family
= sec
->anchor
->family_num
;
3636 if (first_family
!= sec_family
)
3641 /* if 'first' is a spare promote it to a populated mpb with sec's
3644 if (first
->anchor
->num_raid_devs
== 0 &&
3645 sec
->anchor
->num_raid_devs
> 0) {
3647 struct intel_dev
*dv
;
3648 struct imsm_dev
*dev
;
3650 /* we need to copy raid device info from sec if an allocation
3651 * fails here we don't associate the spare
3653 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++) {
3654 dv
= xmalloc(sizeof(*dv
));
3655 dev
= xmalloc(sizeof_imsm_dev(get_imsm_dev(sec
, i
), 1));
3658 dv
->next
= first
->devlist
;
3659 first
->devlist
= dv
;
3661 if (i
< sec
->anchor
->num_raid_devs
) {
3662 /* allocation failure */
3663 free_devlist(first
);
3664 pr_err("imsm: failed to associate spare\n");
3667 first
->anchor
->num_raid_devs
= sec
->anchor
->num_raid_devs
;
3668 first
->anchor
->orig_family_num
= sec
->anchor
->orig_family_num
;
3669 first
->anchor
->family_num
= sec
->anchor
->family_num
;
3670 memcpy(first
->anchor
->sig
, sec
->anchor
->sig
, MAX_SIGNATURE_LENGTH
);
3671 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++)
3672 imsm_copy_dev(get_imsm_dev(first
, i
), get_imsm_dev(sec
, i
));
3678 static void fd2devname(int fd
, char *name
)
3682 char dname
[PATH_MAX
];
3687 if (fstat(fd
, &st
) != 0)
3689 sprintf(path
, "/sys/dev/block/%d:%d",
3690 major(st
.st_rdev
), minor(st
.st_rdev
));
3692 rv
= readlink(path
, dname
, sizeof(dname
)-1);
3697 nm
= strrchr(dname
, '/');
3700 snprintf(name
, MAX_RAID_SERIAL_LEN
, "/dev/%s", nm
);
3704 static int nvme_get_serial(int fd
, void *buf
, size_t buf_len
)
3707 char *name
= fd2kname(fd
);
3712 if (strncmp(name
, "nvme", 4) != 0)
3715 snprintf(path
, sizeof(path
) - 1, "/sys/block/%s/device/serial", name
);
3717 return load_sys(path
, buf
, buf_len
);
3720 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
3722 static int imsm_read_serial(int fd
, char *devname
,
3723 __u8 serial
[MAX_RAID_SERIAL_LEN
])
3732 memset(buf
, 0, sizeof(buf
));
3734 rv
= nvme_get_serial(fd
, buf
, sizeof(buf
));
3737 rv
= scsi_get_serial(fd
, buf
, sizeof(buf
));
3739 if (rv
&& check_env("IMSM_DEVNAME_AS_SERIAL")) {
3740 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
3741 fd2devname(fd
, (char *) serial
);
3747 pr_err("Failed to retrieve serial for %s\n",
3752 /* trim all whitespace and non-printable characters and convert
3755 for (i
= 0, dest
= buf
; i
< sizeof(buf
) && buf
[i
]; i
++) {
3758 /* ':' is reserved for use in placeholder serial
3759 * numbers for missing disks
3770 /* truncate leading characters */
3771 if (len
> MAX_RAID_SERIAL_LEN
) {
3772 dest
+= len
- MAX_RAID_SERIAL_LEN
;
3773 len
= MAX_RAID_SERIAL_LEN
;
3776 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
3777 memcpy(serial
, dest
, len
);
3782 static int serialcmp(__u8
*s1
, __u8
*s2
)
3784 return strncmp((char *) s1
, (char *) s2
, MAX_RAID_SERIAL_LEN
);
3787 static void serialcpy(__u8
*dest
, __u8
*src
)
3789 strncpy((char *) dest
, (char *) src
, MAX_RAID_SERIAL_LEN
);
3792 static struct dl
*serial_to_dl(__u8
*serial
, struct intel_super
*super
)
3796 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
3797 if (serialcmp(dl
->serial
, serial
) == 0)
3803 static struct imsm_disk
*
3804 __serial_to_disk(__u8
*serial
, struct imsm_super
*mpb
, int *idx
)
3808 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3809 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
3811 if (serialcmp(disk
->serial
, serial
) == 0) {
3822 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
3824 struct imsm_disk
*disk
;
3829 __u8 serial
[MAX_RAID_SERIAL_LEN
];
3831 rv
= imsm_read_serial(fd
, devname
, serial
);
3836 dl
= xcalloc(1, sizeof(*dl
));
3839 dl
->major
= major(stb
.st_rdev
);
3840 dl
->minor
= minor(stb
.st_rdev
);
3841 dl
->next
= super
->disks
;
3842 dl
->fd
= keep_fd
? fd
: -1;
3843 assert(super
->disks
== NULL
);
3845 serialcpy(dl
->serial
, serial
);
3848 fd2devname(fd
, name
);
3850 dl
->devname
= xstrdup(devname
);
3852 dl
->devname
= xstrdup(name
);
3854 /* look up this disk's index in the current anchor */
3855 disk
= __serial_to_disk(dl
->serial
, super
->anchor
, &dl
->index
);
3858 /* only set index on disks that are a member of a
3859 * populated contianer, i.e. one with raid_devs
3861 if (is_failed(&dl
->disk
))
3863 else if (is_spare(&dl
->disk
))
3871 /* When migrating map0 contains the 'destination' state while map1
3872 * contains the current state. When not migrating map0 contains the
3873 * current state. This routine assumes that map[0].map_state is set to
3874 * the current array state before being called.
3876 * Migration is indicated by one of the following states
3877 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
3878 * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal
3879 * map1state=unitialized)
3880 * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal
3882 * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal
3883 * map1state=degraded)
3884 * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal
3887 static void migrate(struct imsm_dev
*dev
, struct intel_super
*super
,
3888 __u8 to_state
, int migr_type
)
3890 struct imsm_map
*dest
;
3891 struct imsm_map
*src
= get_imsm_map(dev
, MAP_0
);
3893 dev
->vol
.migr_state
= 1;
3894 set_migr_type(dev
, migr_type
);
3895 dev
->vol
.curr_migr_unit
= 0;
3896 dest
= get_imsm_map(dev
, MAP_1
);
3898 /* duplicate and then set the target end state in map[0] */
3899 memcpy(dest
, src
, sizeof_imsm_map(src
));
3900 if (migr_type
== MIGR_REBUILD
|| migr_type
== MIGR_GEN_MIGR
) {
3904 for (i
= 0; i
< src
->num_members
; i
++) {
3905 ord
= __le32_to_cpu(src
->disk_ord_tbl
[i
]);
3906 set_imsm_ord_tbl_ent(src
, i
, ord_to_idx(ord
));
3910 if (migr_type
== MIGR_GEN_MIGR
)
3911 /* Clear migration record */
3912 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
3914 src
->map_state
= to_state
;
3917 static void end_migration(struct imsm_dev
*dev
, struct intel_super
*super
,
3920 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
3921 struct imsm_map
*prev
= get_imsm_map(dev
, dev
->vol
.migr_state
== 0 ?
3925 /* merge any IMSM_ORD_REBUILD bits that were not successfully
3926 * completed in the last migration.
3928 * FIXME add support for raid-level-migration
3930 if (map_state
!= map
->map_state
&& (is_gen_migration(dev
) == 0) &&
3931 prev
->map_state
!= IMSM_T_STATE_UNINITIALIZED
) {
3932 /* when final map state is other than expected
3933 * merge maps (not for migration)
3937 for (i
= 0; i
< prev
->num_members
; i
++)
3938 for (j
= 0; j
< map
->num_members
; j
++)
3939 /* during online capacity expansion
3940 * disks position can be changed
3941 * if takeover is used
3943 if (ord_to_idx(map
->disk_ord_tbl
[j
]) ==
3944 ord_to_idx(prev
->disk_ord_tbl
[i
])) {
3945 map
->disk_ord_tbl
[j
] |=
3946 prev
->disk_ord_tbl
[i
];
3949 failed
= imsm_count_failed(super
, dev
, MAP_0
);
3950 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
3953 dev
->vol
.migr_state
= 0;
3954 set_migr_type(dev
, 0);
3955 dev
->vol
.curr_migr_unit
= 0;
3956 map
->map_state
= map_state
;
3960 static int parse_raid_devices(struct intel_super
*super
)
3963 struct imsm_dev
*dev_new
;
3964 size_t len
, len_migr
;
3966 size_t space_needed
= 0;
3967 struct imsm_super
*mpb
= super
->anchor
;
3969 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
3970 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
3971 struct intel_dev
*dv
;
3973 len
= sizeof_imsm_dev(dev_iter
, 0);
3974 len_migr
= sizeof_imsm_dev(dev_iter
, 1);
3976 space_needed
+= len_migr
- len
;
3978 dv
= xmalloc(sizeof(*dv
));
3979 if (max_len
< len_migr
)
3981 if (max_len
> len_migr
)
3982 space_needed
+= max_len
- len_migr
;
3983 dev_new
= xmalloc(max_len
);
3984 imsm_copy_dev(dev_new
, dev_iter
);
3987 dv
->next
= super
->devlist
;
3988 super
->devlist
= dv
;
3991 /* ensure that super->buf is large enough when all raid devices
3994 if (__le32_to_cpu(mpb
->mpb_size
) + space_needed
> super
->len
) {
3997 len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + space_needed
,
3998 super
->sector_size
);
3999 if (posix_memalign(&buf
, MAX_SECTOR_SIZE
, len
) != 0)
4002 memcpy(buf
, super
->buf
, super
->len
);
4003 memset(buf
+ super
->len
, 0, len
- super
->len
);
4009 super
->extra_space
+= space_needed
;
4014 /*******************************************************************************
4015 * Function: check_mpb_migr_compatibility
4016 * Description: Function checks for unsupported migration features:
4017 * - migration optimization area (pba_of_lba0)
4018 * - descending reshape (ascending_migr)
4020 * super : imsm metadata information
4022 * 0 : migration is compatible
4023 * -1 : migration is not compatible
4024 ******************************************************************************/
4025 int check_mpb_migr_compatibility(struct intel_super
*super
)
4027 struct imsm_map
*map0
, *map1
;
4028 struct migr_record
*migr_rec
= super
->migr_rec
;
4031 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
4032 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
4035 dev_iter
->vol
.migr_state
== 1 &&
4036 dev_iter
->vol
.migr_type
== MIGR_GEN_MIGR
) {
4037 /* This device is migrating */
4038 map0
= get_imsm_map(dev_iter
, MAP_0
);
4039 map1
= get_imsm_map(dev_iter
, MAP_1
);
4040 if (pba_of_lba0(map0
) != pba_of_lba0(map1
))
4041 /* migration optimization area was used */
4043 if (migr_rec
->ascending_migr
== 0
4044 && migr_rec
->dest_depth_per_unit
> 0)
4045 /* descending reshape not supported yet */
4052 static void __free_imsm(struct intel_super
*super
, int free_disks
);
4054 /* load_imsm_mpb - read matrix metadata
4055 * allocates super->mpb to be freed by free_imsm
4057 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
4059 unsigned long long dsize
;
4060 unsigned long long sectors
;
4061 unsigned int sector_size
= super
->sector_size
;
4063 struct imsm_super
*anchor
;
4066 get_dev_size(fd
, NULL
, &dsize
);
4067 if (dsize
< 2*sector_size
) {
4069 pr_err("%s: device to small for imsm\n",
4074 if (lseek64(fd
, dsize
- (sector_size
* 2), SEEK_SET
) < 0) {
4076 pr_err("Cannot seek to anchor block on %s: %s\n",
4077 devname
, strerror(errno
));
4081 if (posix_memalign((void **)&anchor
, sector_size
, sector_size
) != 0) {
4083 pr_err("Failed to allocate imsm anchor buffer on %s\n", devname
);
4086 if (read(fd
, anchor
, sector_size
) != sector_size
) {
4088 pr_err("Cannot read anchor block on %s: %s\n",
4089 devname
, strerror(errno
));
4094 if (strncmp((char *) anchor
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
4096 pr_err("no IMSM anchor on %s\n", devname
);
4101 __free_imsm(super
, 0);
4102 /* reload capability and hba */
4104 /* capability and hba must be updated with new super allocation */
4105 find_intel_hba_capability(fd
, super
, devname
);
4106 super
->len
= ROUND_UP(anchor
->mpb_size
, sector_size
);
4107 if (posix_memalign(&super
->buf
, MAX_SECTOR_SIZE
, super
->len
) != 0) {
4109 pr_err("unable to allocate %zu byte mpb buffer\n",
4114 memcpy(super
->buf
, anchor
, sector_size
);
4116 sectors
= mpb_sectors(anchor
, sector_size
) - 1;
4119 if (posix_memalign(&super
->migr_rec_buf
, sector_size
,
4120 MIGR_REC_BUF_SECTORS
*sector_size
) != 0) {
4121 pr_err("could not allocate migr_rec buffer\n");
4125 super
->clean_migration_record_by_mdmon
= 0;
4128 check_sum
= __gen_imsm_checksum(super
->anchor
);
4129 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
4131 pr_err("IMSM checksum %x != %x on %s\n",
4133 __le32_to_cpu(super
->anchor
->check_sum
),
4141 /* read the extended mpb */
4142 if (lseek64(fd
, dsize
- (sector_size
* (2 + sectors
)), SEEK_SET
) < 0) {
4144 pr_err("Cannot seek to extended mpb on %s: %s\n",
4145 devname
, strerror(errno
));
4149 if ((unsigned int)read(fd
, super
->buf
+ sector_size
,
4150 super
->len
- sector_size
) != super
->len
- sector_size
) {
4152 pr_err("Cannot read extended mpb on %s: %s\n",
4153 devname
, strerror(errno
));
4157 check_sum
= __gen_imsm_checksum(super
->anchor
);
4158 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
4160 pr_err("IMSM checksum %x != %x on %s\n",
4161 check_sum
, __le32_to_cpu(super
->anchor
->check_sum
),
4169 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
);
4171 /* clears hi bits in metadata if MPB_ATTRIB_2TB_DISK not set */
4172 static void clear_hi(struct intel_super
*super
)
4174 struct imsm_super
*mpb
= super
->anchor
;
4176 if (mpb
->attributes
& MPB_ATTRIB_2TB_DISK
)
4178 for (i
= 0; i
< mpb
->num_disks
; ++i
) {
4179 struct imsm_disk
*disk
= &mpb
->disk
[i
];
4180 disk
->total_blocks_hi
= 0;
4182 for (i
= 0; i
< mpb
->num_raid_devs
; ++i
) {
4183 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
4186 for (n
= 0; n
< 2; ++n
) {
4187 struct imsm_map
*map
= get_imsm_map(dev
, n
);
4190 map
->pba_of_lba0_hi
= 0;
4191 map
->blocks_per_member_hi
= 0;
4192 map
->num_data_stripes_hi
= 0;
4198 load_and_parse_mpb(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
4202 err
= load_imsm_mpb(fd
, super
, devname
);
4205 if (super
->sector_size
== 4096)
4206 convert_from_4k(super
);
4207 err
= load_imsm_disk(fd
, super
, devname
, keep_fd
);
4210 err
= parse_raid_devices(super
);
4213 err
= load_bbm_log(super
);
4218 static void __free_imsm_disk(struct dl
*d
)
4230 static void free_imsm_disks(struct intel_super
*super
)
4234 while (super
->disks
) {
4236 super
->disks
= d
->next
;
4237 __free_imsm_disk(d
);
4239 while (super
->disk_mgmt_list
) {
4240 d
= super
->disk_mgmt_list
;
4241 super
->disk_mgmt_list
= d
->next
;
4242 __free_imsm_disk(d
);
4244 while (super
->missing
) {
4246 super
->missing
= d
->next
;
4247 __free_imsm_disk(d
);
4252 /* free all the pieces hanging off of a super pointer */
4253 static void __free_imsm(struct intel_super
*super
, int free_disks
)
4255 struct intel_hba
*elem
, *next
;
4261 /* unlink capability description */
4263 if (super
->migr_rec_buf
) {
4264 free(super
->migr_rec_buf
);
4265 super
->migr_rec_buf
= NULL
;
4268 free_imsm_disks(super
);
4269 free_devlist(super
);
4273 free((void *)elem
->path
);
4279 free(super
->bbm_log
);
4283 static void free_imsm(struct intel_super
*super
)
4285 __free_imsm(super
, 1);
4289 static void free_super_imsm(struct supertype
*st
)
4291 struct intel_super
*super
= st
->sb
;
4300 static struct intel_super
*alloc_super(void)
4302 struct intel_super
*super
= xcalloc(1, sizeof(*super
));
4304 super
->current_vol
= -1;
4305 super
->create_offset
= ~((unsigned long long) 0);
4310 * find and allocate hba and OROM/EFI based on valid fd of RAID component device
4312 static int find_intel_hba_capability(int fd
, struct intel_super
*super
, char *devname
)
4314 struct sys_dev
*hba_name
;
4317 if (fd
< 0 || check_env("IMSM_NO_PLATFORM")) {
4322 hba_name
= find_disk_attached_hba(fd
, NULL
);
4325 pr_err("%s is not attached to Intel(R) RAID controller.\n",
4329 rv
= attach_hba_to_super(super
, hba_name
);
4332 struct intel_hba
*hba
= super
->hba
;
4334 pr_err("%s is attached to Intel(R) %s %s (%s),\n"
4335 " but the container is assigned to Intel(R) %s %s (",
4337 get_sys_dev_type(hba_name
->type
),
4338 hba_name
->type
== SYS_DEV_VMD
? "domain" : "RAID controller",
4339 hba_name
->pci_id
? : "Err!",
4340 get_sys_dev_type(super
->hba
->type
),
4341 hba
->type
== SYS_DEV_VMD
? "domain" : "RAID controller");
4344 fprintf(stderr
, "%s", hba
->pci_id
? : "Err!");
4346 fprintf(stderr
, ", ");
4349 fprintf(stderr
, ").\n"
4350 " Mixing devices attached to different %s is not allowed.\n",
4351 hba_name
->type
== SYS_DEV_VMD
? "VMD domains" : "controllers");
4355 super
->orom
= find_imsm_capability(hba_name
);
4362 /* find_missing - helper routine for load_super_imsm_all that identifies
4363 * disks that have disappeared from the system. This routine relies on
4364 * the mpb being uptodate, which it is at load time.
4366 static int find_missing(struct intel_super
*super
)
4369 struct imsm_super
*mpb
= super
->anchor
;
4371 struct imsm_disk
*disk
;
4373 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4374 disk
= __get_imsm_disk(mpb
, i
);
4375 dl
= serial_to_dl(disk
->serial
, super
);
4379 dl
= xmalloc(sizeof(*dl
));
4383 dl
->devname
= xstrdup("missing");
4385 serialcpy(dl
->serial
, disk
->serial
);
4388 dl
->next
= super
->missing
;
4389 super
->missing
= dl
;
4396 static struct intel_disk
*disk_list_get(__u8
*serial
, struct intel_disk
*disk_list
)
4398 struct intel_disk
*idisk
= disk_list
;
4401 if (serialcmp(idisk
->disk
.serial
, serial
) == 0)
4403 idisk
= idisk
->next
;
4409 static int __prep_thunderdome(struct intel_super
**table
, int tbl_size
,
4410 struct intel_super
*super
,
4411 struct intel_disk
**disk_list
)
4413 struct imsm_disk
*d
= &super
->disks
->disk
;
4414 struct imsm_super
*mpb
= super
->anchor
;
4417 for (i
= 0; i
< tbl_size
; i
++) {
4418 struct imsm_super
*tbl_mpb
= table
[i
]->anchor
;
4419 struct imsm_disk
*tbl_d
= &table
[i
]->disks
->disk
;
4421 if (tbl_mpb
->family_num
== mpb
->family_num
) {
4422 if (tbl_mpb
->check_sum
== mpb
->check_sum
) {
4423 dprintf("mpb from %d:%d matches %d:%d\n",
4424 super
->disks
->major
,
4425 super
->disks
->minor
,
4426 table
[i
]->disks
->major
,
4427 table
[i
]->disks
->minor
);
4431 if (((is_configured(d
) && !is_configured(tbl_d
)) ||
4432 is_configured(d
) == is_configured(tbl_d
)) &&
4433 tbl_mpb
->generation_num
< mpb
->generation_num
) {
4434 /* current version of the mpb is a
4435 * better candidate than the one in
4436 * super_table, but copy over "cross
4437 * generational" status
4439 struct intel_disk
*idisk
;
4441 dprintf("mpb from %d:%d replaces %d:%d\n",
4442 super
->disks
->major
,
4443 super
->disks
->minor
,
4444 table
[i
]->disks
->major
,
4445 table
[i
]->disks
->minor
);
4447 idisk
= disk_list_get(tbl_d
->serial
, *disk_list
);
4448 if (idisk
&& is_failed(&idisk
->disk
))
4449 tbl_d
->status
|= FAILED_DISK
;
4452 struct intel_disk
*idisk
;
4453 struct imsm_disk
*disk
;
4455 /* tbl_mpb is more up to date, but copy
4456 * over cross generational status before
4459 disk
= __serial_to_disk(d
->serial
, mpb
, NULL
);
4460 if (disk
&& is_failed(disk
))
4461 d
->status
|= FAILED_DISK
;
4463 idisk
= disk_list_get(d
->serial
, *disk_list
);
4466 if (disk
&& is_configured(disk
))
4467 idisk
->disk
.status
|= CONFIGURED_DISK
;
4470 dprintf("mpb from %d:%d prefer %d:%d\n",
4471 super
->disks
->major
,
4472 super
->disks
->minor
,
4473 table
[i
]->disks
->major
,
4474 table
[i
]->disks
->minor
);
4482 table
[tbl_size
++] = super
;
4486 /* update/extend the merged list of imsm_disk records */
4487 for (j
= 0; j
< mpb
->num_disks
; j
++) {
4488 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, j
);
4489 struct intel_disk
*idisk
;
4491 idisk
= disk_list_get(disk
->serial
, *disk_list
);
4493 idisk
->disk
.status
|= disk
->status
;
4494 if (is_configured(&idisk
->disk
) ||
4495 is_failed(&idisk
->disk
))
4496 idisk
->disk
.status
&= ~(SPARE_DISK
);
4498 idisk
= xcalloc(1, sizeof(*idisk
));
4499 idisk
->owner
= IMSM_UNKNOWN_OWNER
;
4500 idisk
->disk
= *disk
;
4501 idisk
->next
= *disk_list
;
4505 if (serialcmp(idisk
->disk
.serial
, d
->serial
) == 0)
4512 static struct intel_super
*
4513 validate_members(struct intel_super
*super
, struct intel_disk
*disk_list
,
4516 struct imsm_super
*mpb
= super
->anchor
;
4520 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4521 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
4522 struct intel_disk
*idisk
;
4524 idisk
= disk_list_get(disk
->serial
, disk_list
);
4526 if (idisk
->owner
== owner
||
4527 idisk
->owner
== IMSM_UNKNOWN_OWNER
)
4530 dprintf("'%.16s' owner %d != %d\n",
4531 disk
->serial
, idisk
->owner
,
4534 dprintf("unknown disk %x [%d]: %.16s\n",
4535 __le32_to_cpu(mpb
->family_num
), i
,
4541 if (ok_count
== mpb
->num_disks
)
4546 static void show_conflicts(__u32 family_num
, struct intel_super
*super_list
)
4548 struct intel_super
*s
;
4550 for (s
= super_list
; s
; s
= s
->next
) {
4551 if (family_num
!= s
->anchor
->family_num
)
4553 pr_err("Conflict, offlining family %#x on '%s'\n",
4554 __le32_to_cpu(family_num
), s
->disks
->devname
);
4558 static struct intel_super
*
4559 imsm_thunderdome(struct intel_super
**super_list
, int len
)
4561 struct intel_super
*super_table
[len
];
4562 struct intel_disk
*disk_list
= NULL
;
4563 struct intel_super
*champion
, *spare
;
4564 struct intel_super
*s
, **del
;
4569 memset(super_table
, 0, sizeof(super_table
));
4570 for (s
= *super_list
; s
; s
= s
->next
)
4571 tbl_size
= __prep_thunderdome(super_table
, tbl_size
, s
, &disk_list
);
4573 for (i
= 0; i
< tbl_size
; i
++) {
4574 struct imsm_disk
*d
;
4575 struct intel_disk
*idisk
;
4576 struct imsm_super
*mpb
= super_table
[i
]->anchor
;
4579 d
= &s
->disks
->disk
;
4581 /* 'd' must appear in merged disk list for its
4582 * configuration to be valid
4584 idisk
= disk_list_get(d
->serial
, disk_list
);
4585 if (idisk
&& idisk
->owner
== i
)
4586 s
= validate_members(s
, disk_list
, i
);
4591 dprintf("marking family: %#x from %d:%d offline\n",
4593 super_table
[i
]->disks
->major
,
4594 super_table
[i
]->disks
->minor
);
4598 /* This is where the mdadm implementation differs from the Windows
4599 * driver which has no strict concept of a container. We can only
4600 * assemble one family from a container, so when returning a prodigal
4601 * array member to this system the code will not be able to disambiguate
4602 * the container contents that should be assembled ("foreign" versus
4603 * "local"). It requires user intervention to set the orig_family_num
4604 * to a new value to establish a new container. The Windows driver in
4605 * this situation fixes up the volume name in place and manages the
4606 * foreign array as an independent entity.
4611 for (i
= 0; i
< tbl_size
; i
++) {
4612 struct intel_super
*tbl_ent
= super_table
[i
];
4618 if (tbl_ent
->anchor
->num_raid_devs
== 0) {
4623 if (s
&& !is_spare
) {
4624 show_conflicts(tbl_ent
->anchor
->family_num
, *super_list
);
4626 } else if (!s
&& !is_spare
)
4639 pr_err("Chose family %#x on '%s', assemble conflicts to new container with '--update=uuid'\n",
4640 __le32_to_cpu(s
->anchor
->family_num
), s
->disks
->devname
);
4642 /* collect all dl's onto 'champion', and update them to
4643 * champion's version of the status
4645 for (s
= *super_list
; s
; s
= s
->next
) {
4646 struct imsm_super
*mpb
= champion
->anchor
;
4647 struct dl
*dl
= s
->disks
;
4652 mpb
->attributes
|= s
->anchor
->attributes
& MPB_ATTRIB_2TB_DISK
;
4654 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4655 struct imsm_disk
*disk
;
4657 disk
= __serial_to_disk(dl
->serial
, mpb
, &dl
->index
);
4660 /* only set index on disks that are a member of
4661 * a populated contianer, i.e. one with
4664 if (is_failed(&dl
->disk
))
4666 else if (is_spare(&dl
->disk
))
4672 if (i
>= mpb
->num_disks
) {
4673 struct intel_disk
*idisk
;
4675 idisk
= disk_list_get(dl
->serial
, disk_list
);
4676 if (idisk
&& is_spare(&idisk
->disk
) &&
4677 !is_failed(&idisk
->disk
) && !is_configured(&idisk
->disk
))
4685 dl
->next
= champion
->disks
;
4686 champion
->disks
= dl
;
4690 /* delete 'champion' from super_list */
4691 for (del
= super_list
; *del
; ) {
4692 if (*del
== champion
) {
4693 *del
= (*del
)->next
;
4696 del
= &(*del
)->next
;
4698 champion
->next
= NULL
;
4702 struct intel_disk
*idisk
= disk_list
;
4704 disk_list
= disk_list
->next
;
4712 get_sra_super_block(int fd
, struct intel_super
**super_list
, char *devname
, int *max
, int keep_fd
);
4713 static int get_super_block(struct intel_super
**super_list
, char *devnm
, char *devname
,
4714 int major
, int minor
, int keep_fd
);
4716 get_devlist_super_block(struct md_list
*devlist
, struct intel_super
**super_list
,
4717 int *max
, int keep_fd
);
4719 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
4720 char *devname
, struct md_list
*devlist
,
4723 struct intel_super
*super_list
= NULL
;
4724 struct intel_super
*super
= NULL
;
4729 /* 'fd' is an opened container */
4730 err
= get_sra_super_block(fd
, &super_list
, devname
, &i
, keep_fd
);
4732 /* get super block from devlist devices */
4733 err
= get_devlist_super_block(devlist
, &super_list
, &i
, keep_fd
);
4736 /* all mpbs enter, maybe one leaves */
4737 super
= imsm_thunderdome(&super_list
, i
);
4743 if (find_missing(super
) != 0) {
4749 /* load migration record */
4750 err
= load_imsm_migr_rec(super
, NULL
);
4752 /* migration is in progress,
4753 * but migr_rec cannot be loaded,
4759 /* Check migration compatibility */
4760 if (err
== 0 && check_mpb_migr_compatibility(super
) != 0) {
4761 pr_err("Unsupported migration detected");
4763 fprintf(stderr
, " on %s\n", devname
);
4765 fprintf(stderr
, " (IMSM).\n");
4774 while (super_list
) {
4775 struct intel_super
*s
= super_list
;
4777 super_list
= super_list
->next
;
4786 strcpy(st
->container_devnm
, fd2devnm(fd
));
4788 st
->container_devnm
[0] = 0;
4789 if (err
== 0 && st
->ss
== NULL
) {
4790 st
->ss
= &super_imsm
;
4791 st
->minor_version
= 0;
4792 st
->max_devs
= IMSM_MAX_DEVICES
;
4798 get_devlist_super_block(struct md_list
*devlist
, struct intel_super
**super_list
,
4799 int *max
, int keep_fd
)
4801 struct md_list
*tmpdev
;
4805 for (i
= 0, tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
4806 if (tmpdev
->used
!= 1)
4808 if (tmpdev
->container
== 1) {
4810 int fd
= dev_open(tmpdev
->devname
, O_RDONLY
|O_EXCL
);
4812 pr_err("cannot open device %s: %s\n",
4813 tmpdev
->devname
, strerror(errno
));
4817 err
= get_sra_super_block(fd
, super_list
,
4818 tmpdev
->devname
, &lmax
,
4827 int major
= major(tmpdev
->st_rdev
);
4828 int minor
= minor(tmpdev
->st_rdev
);
4829 err
= get_super_block(super_list
,
4846 static int get_super_block(struct intel_super
**super_list
, char *devnm
, char *devname
,
4847 int major
, int minor
, int keep_fd
)
4849 struct intel_super
*s
;
4861 sprintf(nm
, "%d:%d", major
, minor
);
4862 dfd
= dev_open(nm
, O_RDWR
);
4868 get_dev_sector_size(dfd
, NULL
, &s
->sector_size
);
4869 find_intel_hba_capability(dfd
, s
, devname
);
4870 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
4872 /* retry the load if we might have raced against mdmon */
4873 if (err
== 3 && devnm
&& mdmon_running(devnm
))
4874 for (retry
= 0; retry
< 3; retry
++) {
4876 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
4882 s
->next
= *super_list
;
4890 if (dfd
>= 0 && !keep_fd
)
4897 get_sra_super_block(int fd
, struct intel_super
**super_list
, char *devname
, int *max
, int keep_fd
)
4904 sra
= sysfs_read(fd
, NULL
, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
4908 if (sra
->array
.major_version
!= -1 ||
4909 sra
->array
.minor_version
!= -2 ||
4910 strcmp(sra
->text_version
, "imsm") != 0) {
4915 devnm
= fd2devnm(fd
);
4916 for (sd
= sra
->devs
, i
= 0; sd
; sd
= sd
->next
, i
++) {
4917 if (get_super_block(super_list
, devnm
, devname
,
4918 sd
->disk
.major
, sd
->disk
.minor
, keep_fd
) != 0) {
4929 static int load_container_imsm(struct supertype
*st
, int fd
, char *devname
)
4931 return load_super_imsm_all(st
, fd
, &st
->sb
, devname
, NULL
, 1);
4935 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
4937 struct intel_super
*super
;
4941 if (test_partition(fd
))
4942 /* IMSM not allowed on partitions */
4945 free_super_imsm(st
);
4947 super
= alloc_super();
4948 get_dev_sector_size(fd
, NULL
, &super
->sector_size
);
4951 /* Load hba and capabilities if they exist.
4952 * But do not preclude loading metadata in case capabilities or hba are
4953 * non-compliant and ignore_hw_compat is set.
4955 rv
= find_intel_hba_capability(fd
, super
, devname
);
4956 /* no orom/efi or non-intel hba of the disk */
4957 if (rv
!= 0 && st
->ignore_hw_compat
== 0) {
4959 pr_err("No OROM/EFI properties for %s\n", devname
);
4963 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
4965 /* retry the load if we might have raced against mdmon */
4967 struct mdstat_ent
*mdstat
= NULL
;
4968 char *name
= fd2kname(fd
);
4971 mdstat
= mdstat_by_component(name
);
4973 if (mdstat
&& mdmon_running(mdstat
->devnm
) && getpid() != mdmon_pid(mdstat
->devnm
)) {
4974 for (retry
= 0; retry
< 3; retry
++) {
4976 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
4982 free_mdstat(mdstat
);
4987 pr_err("Failed to load all information sections on %s\n", devname
);
4993 if (st
->ss
== NULL
) {
4994 st
->ss
= &super_imsm
;
4995 st
->minor_version
= 0;
4996 st
->max_devs
= IMSM_MAX_DEVICES
;
4999 /* load migration record */
5000 if (load_imsm_migr_rec(super
, NULL
) == 0) {
5001 /* Check for unsupported migration features */
5002 if (check_mpb_migr_compatibility(super
) != 0) {
5003 pr_err("Unsupported migration detected");
5005 fprintf(stderr
, " on %s\n", devname
);
5007 fprintf(stderr
, " (IMSM).\n");
5015 static __u16
info_to_blocks_per_strip(mdu_array_info_t
*info
)
5017 if (info
->level
== 1)
5019 return info
->chunk_size
>> 9;
5022 static unsigned long long info_to_blocks_per_member(mdu_array_info_t
*info
,
5023 unsigned long long size
)
5025 if (info
->level
== 1)
5028 return (size
* 2) & ~(info_to_blocks_per_strip(info
) - 1);
5031 static void imsm_update_version_info(struct intel_super
*super
)
5033 /* update the version and attributes */
5034 struct imsm_super
*mpb
= super
->anchor
;
5036 struct imsm_dev
*dev
;
5037 struct imsm_map
*map
;
5040 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5041 dev
= get_imsm_dev(super
, i
);
5042 map
= get_imsm_map(dev
, MAP_0
);
5043 if (__le32_to_cpu(dev
->size_high
) > 0)
5044 mpb
->attributes
|= MPB_ATTRIB_2TB
;
5046 /* FIXME detect when an array spans a port multiplier */
5048 mpb
->attributes
|= MPB_ATTRIB_PM
;
5051 if (mpb
->num_raid_devs
> 1 ||
5052 mpb
->attributes
!= MPB_ATTRIB_CHECKSUM_VERIFY
) {
5053 version
= MPB_VERSION_ATTRIBS
;
5054 switch (get_imsm_raid_level(map
)) {
5055 case 0: mpb
->attributes
|= MPB_ATTRIB_RAID0
; break;
5056 case 1: mpb
->attributes
|= MPB_ATTRIB_RAID1
; break;
5057 case 10: mpb
->attributes
|= MPB_ATTRIB_RAID10
; break;
5058 case 5: mpb
->attributes
|= MPB_ATTRIB_RAID5
; break;
5061 if (map
->num_members
>= 5)
5062 version
= MPB_VERSION_5OR6_DISK_ARRAY
;
5063 else if (dev
->status
== DEV_CLONE_N_GO
)
5064 version
= MPB_VERSION_CNG
;
5065 else if (get_imsm_raid_level(map
) == 5)
5066 version
= MPB_VERSION_RAID5
;
5067 else if (map
->num_members
>= 3)
5068 version
= MPB_VERSION_3OR4_DISK_ARRAY
;
5069 else if (get_imsm_raid_level(map
) == 1)
5070 version
= MPB_VERSION_RAID1
;
5072 version
= MPB_VERSION_RAID0
;
5074 strcpy(((char *) mpb
->sig
) + strlen(MPB_SIGNATURE
), version
);
5078 static int check_name(struct intel_super
*super
, char *name
, int quiet
)
5080 struct imsm_super
*mpb
= super
->anchor
;
5081 char *reason
= NULL
;
5084 if (strlen(name
) > MAX_RAID_SERIAL_LEN
)
5085 reason
= "must be 16 characters or less";
5087 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5088 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
5090 if (strncmp((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
) == 0) {
5091 reason
= "already exists";
5096 if (reason
&& !quiet
)
5097 pr_err("imsm volume name %s\n", reason
);
5102 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
5103 unsigned long long size
, char *name
,
5104 char *homehost
, int *uuid
,
5105 long long data_offset
)
5107 /* We are creating a volume inside a pre-existing container.
5108 * so st->sb is already set.
5110 struct intel_super
*super
= st
->sb
;
5111 unsigned int sector_size
= super
->sector_size
;
5112 struct imsm_super
*mpb
= super
->anchor
;
5113 struct intel_dev
*dv
;
5114 struct imsm_dev
*dev
;
5115 struct imsm_vol
*vol
;
5116 struct imsm_map
*map
;
5117 int idx
= mpb
->num_raid_devs
;
5119 unsigned long long array_blocks
;
5120 size_t size_old
, size_new
;
5121 unsigned long long num_data_stripes
;
5123 if (super
->orom
&& mpb
->num_raid_devs
>= super
->orom
->vpa
) {
5124 pr_err("This imsm-container already has the maximum of %d volumes\n", super
->orom
->vpa
);
5128 /* ensure the mpb is large enough for the new data */
5129 size_old
= __le32_to_cpu(mpb
->mpb_size
);
5130 size_new
= disks_to_mpb_size(info
->nr_disks
);
5131 if (size_new
> size_old
) {
5133 size_t size_round
= ROUND_UP(size_new
, sector_size
);
5135 if (posix_memalign(&mpb_new
, sector_size
, size_round
) != 0) {
5136 pr_err("could not allocate new mpb\n");
5139 if (posix_memalign(&super
->migr_rec_buf
, sector_size
,
5140 MIGR_REC_BUF_SECTORS
*sector_size
) != 0) {
5141 pr_err("could not allocate migr_rec buffer\n");
5147 memcpy(mpb_new
, mpb
, size_old
);
5150 super
->anchor
= mpb_new
;
5151 mpb
->mpb_size
= __cpu_to_le32(size_new
);
5152 memset(mpb_new
+ size_old
, 0, size_round
- size_old
);
5153 super
->len
= size_round
;
5155 super
->current_vol
= idx
;
5157 /* handle 'failed_disks' by either:
5158 * a) create dummy disk entries in the table if this the first
5159 * volume in the array. We add them here as this is the only
5160 * opportunity to add them. add_to_super_imsm_volume()
5161 * handles the non-failed disks and continues incrementing
5163 * b) validate that 'failed_disks' matches the current number
5164 * of missing disks if the container is populated
5166 if (super
->current_vol
== 0) {
5168 for (i
= 0; i
< info
->failed_disks
; i
++) {
5169 struct imsm_disk
*disk
;
5172 disk
= __get_imsm_disk(mpb
, i
);
5173 disk
->status
= CONFIGURED_DISK
| FAILED_DISK
;
5174 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
5175 snprintf((char *) disk
->serial
, MAX_RAID_SERIAL_LEN
,
5178 find_missing(super
);
5183 for (d
= super
->missing
; d
; d
= d
->next
)
5185 if (info
->failed_disks
> missing
) {
5186 pr_err("unable to add 'missing' disk to container\n");
5191 if (!check_name(super
, name
, 0))
5193 dv
= xmalloc(sizeof(*dv
));
5194 dev
= xcalloc(1, sizeof(*dev
) + sizeof(__u32
) * (info
->raid_disks
- 1));
5195 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
5196 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
5197 info
->layout
, info
->chunk_size
,
5199 /* round array size down to closest MB */
5200 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
5202 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
5203 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
5204 dev
->status
= (DEV_READ_COALESCING
| DEV_WRITE_COALESCING
);
5206 vol
->migr_state
= 0;
5207 set_migr_type(dev
, MIGR_INIT
);
5208 vol
->dirty
= !info
->state
;
5209 vol
->curr_migr_unit
= 0;
5210 map
= get_imsm_map(dev
, MAP_0
);
5211 set_pba_of_lba0(map
, super
->create_offset
);
5212 set_blocks_per_member(map
, info_to_blocks_per_member(info
, size
));
5213 map
->blocks_per_strip
= __cpu_to_le16(info_to_blocks_per_strip(info
));
5214 map
->failed_disk_num
= ~0;
5215 if (info
->level
> 0)
5216 map
->map_state
= (info
->state
? IMSM_T_STATE_NORMAL
5217 : IMSM_T_STATE_UNINITIALIZED
);
5219 map
->map_state
= info
->failed_disks
? IMSM_T_STATE_FAILED
:
5220 IMSM_T_STATE_NORMAL
;
5223 if (info
->level
== 1 && info
->raid_disks
> 2) {
5226 pr_err("imsm does not support more than 2 disksin a raid1 volume\n");
5230 map
->raid_level
= info
->level
;
5231 if (info
->level
== 10) {
5232 map
->raid_level
= 1;
5233 map
->num_domains
= info
->raid_disks
/ 2;
5234 } else if (info
->level
== 1)
5235 map
->num_domains
= info
->raid_disks
;
5237 map
->num_domains
= 1;
5239 /* info->size is only int so use the 'size' parameter instead */
5240 num_data_stripes
= (size
* 2) / info_to_blocks_per_strip(info
);
5241 num_data_stripes
/= map
->num_domains
;
5242 set_num_data_stripes(map
, num_data_stripes
);
5244 map
->num_members
= info
->raid_disks
;
5245 for (i
= 0; i
< map
->num_members
; i
++) {
5246 /* initialized in add_to_super */
5247 set_imsm_ord_tbl_ent(map
, i
, IMSM_ORD_REBUILD
);
5249 mpb
->num_raid_devs
++;
5252 dv
->index
= super
->current_vol
;
5253 dv
->next
= super
->devlist
;
5254 super
->devlist
= dv
;
5256 imsm_update_version_info(super
);
5261 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
5262 unsigned long long size
, char *name
,
5263 char *homehost
, int *uuid
,
5264 unsigned long long data_offset
)
5266 /* This is primarily called by Create when creating a new array.
5267 * We will then get add_to_super called for each component, and then
5268 * write_init_super called to write it out to each device.
5269 * For IMSM, Create can create on fresh devices or on a pre-existing
5271 * To create on a pre-existing array a different method will be called.
5272 * This one is just for fresh drives.
5274 struct intel_super
*super
;
5275 struct imsm_super
*mpb
;
5279 if (data_offset
!= INVALID_SECTORS
) {
5280 pr_err("data-offset not supported by imsm\n");
5285 return init_super_imsm_volume(st
, info
, size
, name
, homehost
, uuid
,
5289 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
5291 mpb_size
= MAX_SECTOR_SIZE
;
5293 super
= alloc_super();
5295 posix_memalign(&super
->buf
, MAX_SECTOR_SIZE
, mpb_size
) != 0) {
5300 pr_err("could not allocate superblock\n");
5303 if (posix_memalign(&super
->migr_rec_buf
, MAX_SECTOR_SIZE
,
5304 MIGR_REC_BUF_SECTORS
*MAX_SECTOR_SIZE
) != 0) {
5305 pr_err("could not allocate migr_rec buffer\n");
5310 memset(super
->buf
, 0, mpb_size
);
5312 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
5316 /* zeroing superblock */
5320 mpb
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
5322 version
= (char *) mpb
->sig
;
5323 strcpy(version
, MPB_SIGNATURE
);
5324 version
+= strlen(MPB_SIGNATURE
);
5325 strcpy(version
, MPB_VERSION_RAID0
);
5331 static int add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
5332 int fd
, char *devname
)
5334 struct intel_super
*super
= st
->sb
;
5335 struct imsm_super
*mpb
= super
->anchor
;
5336 struct imsm_disk
*_disk
;
5337 struct imsm_dev
*dev
;
5338 struct imsm_map
*map
;
5342 dev
= get_imsm_dev(super
, super
->current_vol
);
5343 map
= get_imsm_map(dev
, MAP_0
);
5345 if (! (dk
->state
& (1<<MD_DISK_SYNC
))) {
5346 pr_err("%s: Cannot add spare devices to IMSM volume\n",
5352 /* we're doing autolayout so grab the pre-marked (in
5353 * validate_geometry) raid_disk
5355 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
5356 if (dl
->raiddisk
== dk
->raid_disk
)
5359 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
5360 if (dl
->major
== dk
->major
&&
5361 dl
->minor
== dk
->minor
)
5366 pr_err("%s is not a member of the same container\n", devname
);
5370 /* add a pristine spare to the metadata */
5371 if (dl
->index
< 0) {
5372 dl
->index
= super
->anchor
->num_disks
;
5373 super
->anchor
->num_disks
++;
5375 /* Check the device has not already been added */
5376 slot
= get_imsm_disk_slot(map
, dl
->index
);
5378 (get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
) & IMSM_ORD_REBUILD
) == 0) {
5379 pr_err("%s has been included in this array twice\n",
5383 set_imsm_ord_tbl_ent(map
, dk
->raid_disk
, dl
->index
);
5384 dl
->disk
.status
= CONFIGURED_DISK
;
5386 /* update size of 'missing' disks to be at least as large as the
5387 * largest acitve member (we only have dummy missing disks when
5388 * creating the first volume)
5390 if (super
->current_vol
== 0) {
5391 for (df
= super
->missing
; df
; df
= df
->next
) {
5392 if (total_blocks(&dl
->disk
) > total_blocks(&df
->disk
))
5393 set_total_blocks(&df
->disk
, total_blocks(&dl
->disk
));
5394 _disk
= __get_imsm_disk(mpb
, df
->index
);
5399 /* refresh unset/failed slots to point to valid 'missing' entries */
5400 for (df
= super
->missing
; df
; df
= df
->next
)
5401 for (slot
= 0; slot
< mpb
->num_disks
; slot
++) {
5402 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
5404 if ((ord
& IMSM_ORD_REBUILD
) == 0)
5406 set_imsm_ord_tbl_ent(map
, slot
, df
->index
| IMSM_ORD_REBUILD
);
5407 if (is_gen_migration(dev
)) {
5408 struct imsm_map
*map2
= get_imsm_map(dev
,
5410 int slot2
= get_imsm_disk_slot(map2
, df
->index
);
5411 if (slot2
< map2
->num_members
&& slot2
>= 0) {
5412 __u32 ord2
= get_imsm_ord_tbl_ent(dev
,
5415 if ((unsigned)df
->index
==
5417 set_imsm_ord_tbl_ent(map2
,
5423 dprintf("set slot:%d to missing disk:%d\n", slot
, df
->index
);
5427 /* if we are creating the first raid device update the family number */
5428 if (super
->current_vol
== 0) {
5430 struct imsm_dev
*_dev
= __get_imsm_dev(mpb
, 0);
5432 _disk
= __get_imsm_disk(mpb
, dl
->index
);
5433 if (!_dev
|| !_disk
) {
5434 pr_err("BUG mpb setup error\n");
5440 sum
+= __gen_imsm_checksum(mpb
);
5441 mpb
->family_num
= __cpu_to_le32(sum
);
5442 mpb
->orig_family_num
= mpb
->family_num
;
5444 super
->current_disk
= dl
;
5449 * Function marks disk as spare and restores disk serial
5450 * in case it was previously marked as failed by takeover operation
5452 * -1 : critical error
5453 * 0 : disk is marked as spare but serial is not set
5456 int mark_spare(struct dl
*disk
)
5458 __u8 serial
[MAX_RAID_SERIAL_LEN
];
5465 if (!imsm_read_serial(disk
->fd
, NULL
, serial
)) {
5466 /* Restore disk serial number, because takeover marks disk
5467 * as failed and adds to serial ':0' before it becomes
5470 serialcpy(disk
->serial
, serial
);
5471 serialcpy(disk
->disk
.serial
, serial
);
5474 disk
->disk
.status
= SPARE_DISK
;
5480 static int add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
5481 int fd
, char *devname
,
5482 unsigned long long data_offset
)
5484 struct intel_super
*super
= st
->sb
;
5486 unsigned long long size
;
5487 unsigned int member_sector_size
;
5492 /* If we are on an RAID enabled platform check that the disk is
5493 * attached to the raid controller.
5494 * We do not need to test disks attachment for container based additions,
5495 * they shall be already tested when container was created/assembled.
5497 rv
= find_intel_hba_capability(fd
, super
, devname
);
5498 /* no orom/efi or non-intel hba of the disk */
5500 dprintf("capability: %p fd: %d ret: %d\n",
5501 super
->orom
, fd
, rv
);
5505 if (super
->current_vol
>= 0)
5506 return add_to_super_imsm_volume(st
, dk
, fd
, devname
);
5509 dd
= xcalloc(sizeof(*dd
), 1);
5510 dd
->major
= major(stb
.st_rdev
);
5511 dd
->minor
= minor(stb
.st_rdev
);
5512 dd
->devname
= devname
? xstrdup(devname
) : NULL
;
5515 dd
->action
= DISK_ADD
;
5516 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
5518 pr_err("failed to retrieve scsi serial, aborting\n");
5524 if (super
->hba
&& ((super
->hba
->type
== SYS_DEV_NVME
) ||
5525 (super
->hba
->type
== SYS_DEV_VMD
))) {
5527 char *devpath
= diskfd_to_devpath(fd
);
5528 char controller_path
[PATH_MAX
];
5531 pr_err("failed to get devpath, aborting\n");
5538 snprintf(controller_path
, PATH_MAX
-1, "%s/device", devpath
);
5541 if (devpath_to_vendor(controller_path
) == 0x8086) {
5543 * If Intel's NVMe drive has serial ended with
5544 * "-A","-B","-1" or "-2" it means that this is "x8"
5545 * device (double drive on single PCIe card).
5546 * User should be warned about potential data loss.
5548 for (i
= MAX_RAID_SERIAL_LEN
-1; i
> 0; i
--) {
5549 /* Skip empty character at the end */
5550 if (dd
->serial
[i
] == 0)
5553 if (((dd
->serial
[i
] == 'A') ||
5554 (dd
->serial
[i
] == 'B') ||
5555 (dd
->serial
[i
] == '1') ||
5556 (dd
->serial
[i
] == '2')) &&
5557 (dd
->serial
[i
-1] == '-'))
5558 pr_err("\tThe action you are about to take may put your data at risk.\n"
5559 "\tPlease note that x8 devices may consist of two separate x4 devices "
5560 "located on a single PCIe port.\n"
5561 "\tRAID 0 is the only supported configuration for this type of x8 device.\n");
5567 get_dev_size(fd
, NULL
, &size
);
5568 get_dev_sector_size(fd
, NULL
, &member_sector_size
);
5570 if (super
->sector_size
== 0) {
5571 /* this a first device, so sector_size is not set yet */
5572 super
->sector_size
= member_sector_size
;
5573 } else if (member_sector_size
!= super
->sector_size
) {
5574 pr_err("Mixing between different sector size is forbidden, aborting...\n");
5581 /* clear migr_rec when adding disk to container */
5582 memset(super
->migr_rec_buf
, 0, MIGR_REC_BUF_SECTORS
*super
->sector_size
);
5583 if (lseek64(fd
, size
- MIGR_REC_SECTOR_POSITION
*super
->sector_size
,
5585 if (write(fd
, super
->migr_rec_buf
,
5586 MIGR_REC_BUF_SECTORS
*super
->sector_size
) !=
5587 MIGR_REC_BUF_SECTORS
*super
->sector_size
)
5588 perror("Write migr_rec failed");
5592 serialcpy(dd
->disk
.serial
, dd
->serial
);
5593 set_total_blocks(&dd
->disk
, size
);
5594 if (__le32_to_cpu(dd
->disk
.total_blocks_hi
) > 0) {
5595 struct imsm_super
*mpb
= super
->anchor
;
5596 mpb
->attributes
|= MPB_ATTRIB_2TB_DISK
;
5599 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
5600 dd
->disk
.scsi_id
= __cpu_to_le32(id
);
5602 dd
->disk
.scsi_id
= __cpu_to_le32(0);
5604 if (st
->update_tail
) {
5605 dd
->next
= super
->disk_mgmt_list
;
5606 super
->disk_mgmt_list
= dd
;
5608 dd
->next
= super
->disks
;
5610 super
->updates_pending
++;
5616 static int remove_from_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
)
5618 struct intel_super
*super
= st
->sb
;
5621 /* remove from super works only in mdmon - for communication
5622 * manager - monitor. Check if communication memory buffer
5625 if (!st
->update_tail
) {
5626 pr_err("shall be used in mdmon context only\n");
5629 dd
= xcalloc(1, sizeof(*dd
));
5630 dd
->major
= dk
->major
;
5631 dd
->minor
= dk
->minor
;
5634 dd
->action
= DISK_REMOVE
;
5636 dd
->next
= super
->disk_mgmt_list
;
5637 super
->disk_mgmt_list
= dd
;
5642 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
);
5645 char buf
[MAX_SECTOR_SIZE
];
5646 struct imsm_super anchor
;
5647 } spare_record
__attribute__ ((aligned(MAX_SECTOR_SIZE
)));
5649 /* spare records have their own family number and do not have any defined raid
5652 static int write_super_imsm_spares(struct intel_super
*super
, int doclose
)
5654 struct imsm_super
*mpb
= super
->anchor
;
5655 struct imsm_super
*spare
= &spare_record
.anchor
;
5659 spare
->mpb_size
= __cpu_to_le32(sizeof(struct imsm_super
));
5660 spare
->generation_num
= __cpu_to_le32(1UL);
5661 spare
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
5662 spare
->num_disks
= 1;
5663 spare
->num_raid_devs
= 0;
5664 spare
->cache_size
= mpb
->cache_size
;
5665 spare
->pwr_cycle_count
= __cpu_to_le32(1);
5667 snprintf((char *) spare
->sig
, MAX_SIGNATURE_LENGTH
,
5668 MPB_SIGNATURE MPB_VERSION_RAID0
);
5670 for (d
= super
->disks
; d
; d
= d
->next
) {
5674 spare
->disk
[0] = d
->disk
;
5675 if (__le32_to_cpu(d
->disk
.total_blocks_hi
) > 0)
5676 spare
->attributes
|= MPB_ATTRIB_2TB_DISK
;
5678 if (super
->sector_size
== 4096)
5679 convert_to_4k_imsm_disk(&spare
->disk
[0]);
5681 sum
= __gen_imsm_checksum(spare
);
5682 spare
->family_num
= __cpu_to_le32(sum
);
5683 spare
->orig_family_num
= 0;
5684 sum
= __gen_imsm_checksum(spare
);
5685 spare
->check_sum
= __cpu_to_le32(sum
);
5687 if (store_imsm_mpb(d
->fd
, spare
)) {
5688 pr_err("failed for device %d:%d %s\n",
5689 d
->major
, d
->minor
, strerror(errno
));
5701 static int write_super_imsm(struct supertype
*st
, int doclose
)
5703 struct intel_super
*super
= st
->sb
;
5704 unsigned int sector_size
= super
->sector_size
;
5705 struct imsm_super
*mpb
= super
->anchor
;
5711 __u32 mpb_size
= sizeof(struct imsm_super
) - sizeof(struct imsm_disk
);
5713 int clear_migration_record
= 1;
5716 /* 'generation' is incremented everytime the metadata is written */
5717 generation
= __le32_to_cpu(mpb
->generation_num
);
5719 mpb
->generation_num
= __cpu_to_le32(generation
);
5721 /* fix up cases where previous mdadm releases failed to set
5724 if (mpb
->orig_family_num
== 0)
5725 mpb
->orig_family_num
= mpb
->family_num
;
5727 for (d
= super
->disks
; d
; d
= d
->next
) {
5731 mpb
->disk
[d
->index
] = d
->disk
;
5735 for (d
= super
->missing
; d
; d
= d
->next
) {
5736 mpb
->disk
[d
->index
] = d
->disk
;
5739 mpb
->num_disks
= num_disks
;
5740 mpb_size
+= sizeof(struct imsm_disk
) * mpb
->num_disks
;
5742 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5743 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
5744 struct imsm_dev
*dev2
= get_imsm_dev(super
, i
);
5746 imsm_copy_dev(dev
, dev2
);
5747 mpb_size
+= sizeof_imsm_dev(dev
, 0);
5749 if (is_gen_migration(dev2
))
5750 clear_migration_record
= 0;
5753 bbm_log_size
= get_imsm_bbm_log_size(super
->bbm_log
);
5756 memcpy((void *)mpb
+ mpb_size
, super
->bbm_log
, bbm_log_size
);
5757 mpb
->attributes
|= MPB_ATTRIB_BBM
;
5759 mpb
->attributes
&= ~MPB_ATTRIB_BBM
;
5761 super
->anchor
->bbm_log_size
= __cpu_to_le32(bbm_log_size
);
5762 mpb_size
+= bbm_log_size
;
5763 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
5766 assert(super
->len
== 0 || mpb_size
<= super
->len
);
5769 /* recalculate checksum */
5770 sum
= __gen_imsm_checksum(mpb
);
5771 mpb
->check_sum
= __cpu_to_le32(sum
);
5773 if (super
->clean_migration_record_by_mdmon
) {
5774 clear_migration_record
= 1;
5775 super
->clean_migration_record_by_mdmon
= 0;
5777 if (clear_migration_record
)
5778 memset(super
->migr_rec_buf
, 0,
5779 MIGR_REC_BUF_SECTORS
*sector_size
);
5781 if (sector_size
== 4096)
5782 convert_to_4k(super
);
5784 /* write the mpb for disks that compose raid devices */
5785 for (d
= super
->disks
; d
; d
= d
->next
) {
5786 if (d
->index
< 0 || is_failed(&d
->disk
))
5789 if (clear_migration_record
) {
5790 unsigned long long dsize
;
5792 get_dev_size(d
->fd
, NULL
, &dsize
);
5793 if (lseek64(d
->fd
, dsize
- sector_size
,
5795 if (write(d
->fd
, super
->migr_rec_buf
,
5796 MIGR_REC_BUF_SECTORS
*sector_size
) !=
5797 MIGR_REC_BUF_SECTORS
*sector_size
)
5798 perror("Write migr_rec failed");
5802 if (store_imsm_mpb(d
->fd
, mpb
))
5804 "failed for device %d:%d (fd: %d)%s\n",
5806 d
->fd
, strerror(errno
));
5815 return write_super_imsm_spares(super
, doclose
);
5820 static int create_array(struct supertype
*st
, int dev_idx
)
5823 struct imsm_update_create_array
*u
;
5824 struct intel_super
*super
= st
->sb
;
5825 struct imsm_dev
*dev
= get_imsm_dev(super
, dev_idx
);
5826 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
5827 struct disk_info
*inf
;
5828 struct imsm_disk
*disk
;
5831 len
= sizeof(*u
) - sizeof(*dev
) + sizeof_imsm_dev(dev
, 0) +
5832 sizeof(*inf
) * map
->num_members
;
5834 u
->type
= update_create_array
;
5835 u
->dev_idx
= dev_idx
;
5836 imsm_copy_dev(&u
->dev
, dev
);
5837 inf
= get_disk_info(u
);
5838 for (i
= 0; i
< map
->num_members
; i
++) {
5839 int idx
= get_imsm_disk_idx(dev
, i
, MAP_X
);
5841 disk
= get_imsm_disk(super
, idx
);
5843 disk
= get_imsm_missing(super
, idx
);
5844 serialcpy(inf
[i
].serial
, disk
->serial
);
5846 append_metadata_update(st
, u
, len
);
5851 static int mgmt_disk(struct supertype
*st
)
5853 struct intel_super
*super
= st
->sb
;
5855 struct imsm_update_add_remove_disk
*u
;
5857 if (!super
->disk_mgmt_list
)
5862 u
->type
= update_add_remove_disk
;
5863 append_metadata_update(st
, u
, len
);
5868 static int write_init_super_imsm(struct supertype
*st
)
5870 struct intel_super
*super
= st
->sb
;
5871 int current_vol
= super
->current_vol
;
5873 /* we are done with current_vol reset it to point st at the container */
5874 super
->current_vol
= -1;
5876 if (st
->update_tail
) {
5877 /* queue the recently created array / added disk
5878 * as a metadata update */
5881 /* determine if we are creating a volume or adding a disk */
5882 if (current_vol
< 0) {
5883 /* in the mgmt (add/remove) disk case we are running
5884 * in mdmon context, so don't close fd's
5886 return mgmt_disk(st
);
5888 rv
= create_array(st
, current_vol
);
5893 for (d
= super
->disks
; d
; d
= d
->next
)
5894 Kill(d
->devname
, NULL
, 0, -1, 1);
5895 return write_super_imsm(st
, 1);
5900 static int store_super_imsm(struct supertype
*st
, int fd
)
5902 struct intel_super
*super
= st
->sb
;
5903 struct imsm_super
*mpb
= super
? super
->anchor
: NULL
;
5909 if (super
->sector_size
== 4096)
5910 convert_to_4k(super
);
5911 return store_imsm_mpb(fd
, mpb
);
5918 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
5919 int layout
, int raiddisks
, int chunk
,
5920 unsigned long long size
,
5921 unsigned long long data_offset
,
5923 unsigned long long *freesize
,
5927 unsigned long long ldsize
;
5928 struct intel_super
*super
;
5931 if (level
!= LEVEL_CONTAINER
)
5936 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
5939 pr_err("imsm: Cannot open %s: %s\n",
5940 dev
, strerror(errno
));
5943 if (!get_dev_size(fd
, dev
, &ldsize
)) {
5948 /* capabilities retrieve could be possible
5949 * note that there is no fd for the disks in array.
5951 super
= alloc_super();
5956 if (!get_dev_sector_size(fd
, NULL
, &super
->sector_size
)) {
5962 rv
= find_intel_hba_capability(fd
, super
, verbose
> 0 ? dev
: NULL
);
5966 fd2devname(fd
, str
);
5967 dprintf("fd: %d %s orom: %p rv: %d raiddisk: %d\n",
5968 fd
, str
, super
->orom
, rv
, raiddisks
);
5970 /* no orom/efi or non-intel hba of the disk */
5977 if (raiddisks
> super
->orom
->tds
) {
5979 pr_err("%d exceeds maximum number of platform supported disks: %d\n",
5980 raiddisks
, super
->orom
->tds
);
5984 if ((super
->orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
) == 0 &&
5985 (ldsize
>> 9) >> 32 > 0) {
5987 pr_err("%s exceeds maximum platform supported size\n", dev
);
5993 *freesize
= avail_size_imsm(st
, ldsize
>> 9, data_offset
);
5999 static unsigned long long find_size(struct extent
*e
, int *idx
, int num_extents
)
6001 const unsigned long long base_start
= e
[*idx
].start
;
6002 unsigned long long end
= base_start
+ e
[*idx
].size
;
6005 if (base_start
== end
)
6009 for (i
= *idx
; i
< num_extents
; i
++) {
6010 /* extend overlapping extents */
6011 if (e
[i
].start
>= base_start
&&
6012 e
[i
].start
<= end
) {
6015 if (e
[i
].start
+ e
[i
].size
> end
)
6016 end
= e
[i
].start
+ e
[i
].size
;
6017 } else if (e
[i
].start
> end
) {
6023 return end
- base_start
;
6026 static unsigned long long merge_extents(struct intel_super
*super
, int sum_extents
)
6028 /* build a composite disk with all known extents and generate a new
6029 * 'maxsize' given the "all disks in an array must share a common start
6030 * offset" constraint
6032 struct extent
*e
= xcalloc(sum_extents
, sizeof(*e
));
6036 unsigned long long pos
;
6037 unsigned long long start
= 0;
6038 unsigned long long maxsize
;
6039 unsigned long reserve
;
6041 /* coalesce and sort all extents. also, check to see if we need to
6042 * reserve space between member arrays
6045 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6048 for (i
= 0; i
< dl
->extent_cnt
; i
++)
6051 qsort(e
, sum_extents
, sizeof(*e
), cmp_extent
);
6056 while (i
< sum_extents
) {
6057 e
[j
].start
= e
[i
].start
;
6058 e
[j
].size
= find_size(e
, &i
, sum_extents
);
6060 if (e
[j
-1].size
== 0)
6069 unsigned long long esize
;
6071 esize
= e
[i
].start
- pos
;
6072 if (esize
>= maxsize
) {
6077 pos
= e
[i
].start
+ e
[i
].size
;
6079 } while (e
[i
-1].size
);
6085 /* FIXME assumes volume at offset 0 is the first volume in a
6088 if (start_extent
> 0)
6089 reserve
= IMSM_RESERVED_SECTORS
; /* gap between raid regions */
6093 if (maxsize
< reserve
)
6096 super
->create_offset
= ~((unsigned long long) 0);
6097 if (start
+ reserve
> super
->create_offset
)
6098 return 0; /* start overflows create_offset */
6099 super
->create_offset
= start
+ reserve
;
6101 return maxsize
- reserve
;
6104 static int is_raid_level_supported(const struct imsm_orom
*orom
, int level
, int raiddisks
)
6106 if (level
< 0 || level
== 6 || level
== 4)
6109 /* if we have an orom prevent invalid raid levels */
6112 case 0: return imsm_orom_has_raid0(orom
);
6115 return imsm_orom_has_raid1e(orom
);
6116 return imsm_orom_has_raid1(orom
) && raiddisks
== 2;
6117 case 10: return imsm_orom_has_raid10(orom
) && raiddisks
== 4;
6118 case 5: return imsm_orom_has_raid5(orom
) && raiddisks
> 2;
6121 return 1; /* not on an Intel RAID platform so anything goes */
6127 active_arrays_by_format(char *name
, char* hba
, struct md_list
**devlist
,
6128 int dpa
, int verbose
)
6130 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
6131 struct mdstat_ent
*memb
;
6137 for (memb
= mdstat
; memb
; memb
= memb
->next
) {
6138 if (memb
->metadata_version
&&
6139 (strncmp(memb
->metadata_version
, "external:", 9) == 0) &&
6140 (strcmp(&memb
->metadata_version
[9], name
) == 0) &&
6141 !is_subarray(memb
->metadata_version
+9) &&
6143 struct dev_member
*dev
= memb
->members
;
6145 while(dev
&& (fd
< 0)) {
6146 char *path
= xmalloc(strlen(dev
->name
) + strlen("/dev/") + 1);
6147 num
= sprintf(path
, "%s%s", "/dev/", dev
->name
);
6149 fd
= open(path
, O_RDONLY
, 0);
6150 if (num
<= 0 || fd
< 0) {
6151 pr_vrb("Cannot open %s: %s\n",
6152 dev
->name
, strerror(errno
));
6158 if (fd
>= 0 && disk_attached_to_hba(fd
, hba
)) {
6159 struct mdstat_ent
*vol
;
6160 for (vol
= mdstat
; vol
; vol
= vol
->next
) {
6161 if (vol
->active
> 0 &&
6162 vol
->metadata_version
&&
6163 is_container_member(vol
, memb
->devnm
)) {
6168 if (*devlist
&& (found
< dpa
)) {
6169 dv
= xcalloc(1, sizeof(*dv
));
6170 dv
->devname
= xmalloc(strlen(memb
->devnm
) + strlen("/dev/") + 1);
6171 sprintf(dv
->devname
, "%s%s", "/dev/", memb
->devnm
);
6174 dv
->next
= *devlist
;
6182 free_mdstat(mdstat
);
6187 static struct md_list
*
6188 get_loop_devices(void)
6191 struct md_list
*devlist
= NULL
;
6194 for(i
= 0; i
< 12; i
++) {
6195 dv
= xcalloc(1, sizeof(*dv
));
6196 dv
->devname
= xmalloc(40);
6197 sprintf(dv
->devname
, "/dev/loop%d", i
);
6205 static struct md_list
*
6206 get_devices(const char *hba_path
)
6208 struct md_list
*devlist
= NULL
;
6215 devlist
= get_loop_devices();
6218 /* scroll through /sys/dev/block looking for devices attached to
6221 dir
= opendir("/sys/dev/block");
6222 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
6227 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
6229 path
= devt_to_devpath(makedev(major
, minor
));
6232 if (!path_attached_to_hba(path
, hba_path
)) {
6239 fd
= dev_open(ent
->d_name
, O_RDONLY
);
6241 fd2devname(fd
, buf
);
6244 pr_err("cannot open device: %s\n",
6249 dv
= xcalloc(1, sizeof(*dv
));
6250 dv
->devname
= xstrdup(buf
);
6257 devlist
= devlist
->next
;
6267 count_volumes_list(struct md_list
*devlist
, char *homehost
,
6268 int verbose
, int *found
)
6270 struct md_list
*tmpdev
;
6272 struct supertype
*st
;
6274 /* first walk the list of devices to find a consistent set
6275 * that match the criterea, if that is possible.
6276 * We flag the ones we like with 'used'.
6279 st
= match_metadata_desc_imsm("imsm");
6281 pr_vrb("cannot allocate memory for imsm supertype\n");
6285 for (tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
6286 char *devname
= tmpdev
->devname
;
6288 struct supertype
*tst
;
6290 if (tmpdev
->used
> 1)
6292 tst
= dup_super(st
);
6294 pr_vrb("cannot allocate memory for imsm supertype\n");
6297 tmpdev
->container
= 0;
6298 dfd
= dev_open(devname
, O_RDONLY
|O_EXCL
);
6300 dprintf("cannot open device %s: %s\n",
6301 devname
, strerror(errno
));
6303 } else if (fstat(dfd
, &stb
)< 0) {
6305 dprintf("fstat failed for %s: %s\n",
6306 devname
, strerror(errno
));
6308 } else if ((stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
6309 dprintf("%s is not a block device.\n",
6312 } else if (must_be_container(dfd
)) {
6313 struct supertype
*cst
;
6314 cst
= super_by_fd(dfd
, NULL
);
6316 dprintf("cannot recognize container type %s\n",
6319 } else if (tst
->ss
!= st
->ss
) {
6320 dprintf("non-imsm container - ignore it: %s\n",
6323 } else if (!tst
->ss
->load_container
||
6324 tst
->ss
->load_container(tst
, dfd
, NULL
))
6327 tmpdev
->container
= 1;
6330 cst
->ss
->free_super(cst
);
6332 tmpdev
->st_rdev
= stb
.st_rdev
;
6333 if (tst
->ss
->load_super(tst
,dfd
, NULL
)) {
6334 dprintf("no RAID superblock on %s\n",
6337 } else if (tst
->ss
->compare_super
== NULL
) {
6338 dprintf("Cannot assemble %s metadata on %s\n",
6339 tst
->ss
->name
, devname
);
6345 if (tmpdev
->used
== 2 || tmpdev
->used
== 4) {
6346 /* Ignore unrecognised devices during auto-assembly */
6351 tst
->ss
->getinfo_super(tst
, &info
, NULL
);
6353 if (st
->minor_version
== -1)
6354 st
->minor_version
= tst
->minor_version
;
6356 if (memcmp(info
.uuid
, uuid_zero
,
6357 sizeof(int[4])) == 0) {
6358 /* this is a floating spare. It cannot define
6359 * an array unless there are no more arrays of
6360 * this type to be found. It can be included
6361 * in an array of this type though.
6367 if (st
->ss
!= tst
->ss
||
6368 st
->minor_version
!= tst
->minor_version
||
6369 st
->ss
->compare_super(st
, tst
) != 0) {
6370 /* Some mismatch. If exactly one array matches this host,
6371 * we can resolve on that one.
6372 * Or, if we are auto assembling, we just ignore the second
6375 dprintf("superblock on %s doesn't match others - assembly aborted\n",
6381 dprintf("found: devname: %s\n", devname
);
6385 tst
->ss
->free_super(tst
);
6389 if ((err
= load_super_imsm_all(st
, -1, &st
->sb
, NULL
, devlist
, 0)) == 0) {
6390 struct mdinfo
*iter
, *head
= st
->ss
->container_content(st
, NULL
);
6391 for (iter
= head
; iter
; iter
= iter
->next
) {
6392 dprintf("content->text_version: %s vol\n",
6393 iter
->text_version
);
6394 if (iter
->array
.state
& (1<<MD_SB_BLOCK_VOLUME
)) {
6395 /* do not assemble arrays with unsupported
6397 dprintf("Cannot activate member %s.\n",
6398 iter
->text_version
);
6405 dprintf("No valid super block on device list: err: %d %p\n",
6409 dprintf("no more devices to examine\n");
6412 for (tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
6413 if (tmpdev
->used
== 1 && tmpdev
->found
) {
6415 if (count
< tmpdev
->found
)
6418 count
-= tmpdev
->found
;
6421 if (tmpdev
->used
== 1)
6426 st
->ss
->free_super(st
);
6431 count_volumes(struct intel_hba
*hba
, int dpa
, int verbose
)
6433 struct sys_dev
*idev
, *intel_devices
= find_intel_devices();
6435 const struct orom_entry
*entry
;
6436 struct devid_list
*dv
, *devid_list
;
6438 if (!hba
|| !hba
->path
)
6441 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
6442 if (strstr(idev
->path
, hba
->path
))
6446 if (!idev
|| !idev
->dev_id
)
6449 entry
= get_orom_entry_by_device_id(idev
->dev_id
);
6451 if (!entry
|| !entry
->devid_list
)
6454 devid_list
= entry
->devid_list
;
6455 for (dv
= devid_list
; dv
; dv
= dv
->next
) {
6456 struct md_list
*devlist
;
6457 struct sys_dev
*device
= device_by_id(dv
->devid
);
6462 hba_path
= device
->path
;
6466 devlist
= get_devices(hba_path
);
6467 /* if no intel devices return zero volumes */
6468 if (devlist
== NULL
)
6471 count
+= active_arrays_by_format("imsm", hba_path
, &devlist
, dpa
, verbose
);
6472 dprintf("path: %s active arrays: %d\n", hba_path
, count
);
6473 if (devlist
== NULL
)
6477 count
+= count_volumes_list(devlist
,
6481 dprintf("found %d count: %d\n", found
, count
);
6484 dprintf("path: %s total number of volumes: %d\n", hba_path
, count
);
6487 struct md_list
*dv
= devlist
;
6488 devlist
= devlist
->next
;
6496 static int imsm_default_chunk(const struct imsm_orom
*orom
)
6498 /* up to 512 if the plaform supports it, otherwise the platform max.
6499 * 128 if no platform detected
6501 int fs
= max(7, orom
? fls(orom
->sss
) : 0);
6503 return min(512, (1 << fs
));
6507 validate_geometry_imsm_orom(struct intel_super
*super
, int level
, int layout
,
6508 int raiddisks
, int *chunk
, unsigned long long size
, int verbose
)
6510 /* check/set platform and metadata limits/defaults */
6511 if (super
->orom
&& raiddisks
> super
->orom
->dpa
) {
6512 pr_vrb("platform supports a maximum of %d disks per array\n",
6517 /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */
6518 if (!is_raid_level_supported(super
->orom
, level
, raiddisks
)) {
6519 pr_vrb("platform does not support raid%d with %d disk%s\n",
6520 level
, raiddisks
, raiddisks
> 1 ? "s" : "");
6524 if (*chunk
== 0 || *chunk
== UnSet
)
6525 *chunk
= imsm_default_chunk(super
->orom
);
6527 if (super
->orom
&& !imsm_orom_has_chunk(super
->orom
, *chunk
)) {
6528 pr_vrb("platform does not support a chunk size of: %d\n", *chunk
);
6532 if (layout
!= imsm_level_to_layout(level
)) {
6534 pr_vrb("imsm raid 5 only supports the left-asymmetric layout\n");
6535 else if (level
== 10)
6536 pr_vrb("imsm raid 10 only supports the n2 layout\n");
6538 pr_vrb("imsm unknown layout %#x for this raid level %d\n",
6543 if (super
->orom
&& (super
->orom
->attr
& IMSM_OROM_ATTR_2TB
) == 0 &&
6544 (calc_array_size(level
, raiddisks
, layout
, *chunk
, size
) >> 32) > 0) {
6545 pr_vrb("platform does not support a volume size over 2TB\n");
6552 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
6553 * FIX ME add ahci details
6555 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
6556 int layout
, int raiddisks
, int *chunk
,
6557 unsigned long long size
,
6558 unsigned long long data_offset
,
6560 unsigned long long *freesize
,
6564 struct intel_super
*super
= st
->sb
;
6565 struct imsm_super
*mpb
;
6567 unsigned long long pos
= 0;
6568 unsigned long long maxsize
;
6572 /* We must have the container info already read in. */
6576 mpb
= super
->anchor
;
6578 if (!validate_geometry_imsm_orom(super
, level
, layout
, raiddisks
, chunk
, size
, verbose
)) {
6579 pr_err("RAID gemetry validation failed. Cannot proceed with the action(s).\n");
6583 /* General test: make sure there is space for
6584 * 'raiddisks' device extents of size 'size' at a given
6587 unsigned long long minsize
= size
;
6588 unsigned long long start_offset
= MaxSector
;
6591 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
6592 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6597 e
= get_extents(super
, dl
);
6600 unsigned long long esize
;
6601 esize
= e
[i
].start
- pos
;
6602 if (esize
>= minsize
)
6604 if (found
&& start_offset
== MaxSector
) {
6607 } else if (found
&& pos
!= start_offset
) {
6611 pos
= e
[i
].start
+ e
[i
].size
;
6613 } while (e
[i
-1].size
);
6618 if (dcnt
< raiddisks
) {
6620 pr_err("imsm: Not enough devices with space for this array (%d < %d)\n",
6627 /* This device must be a member of the set */
6628 if (stat(dev
, &stb
) < 0)
6630 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
6632 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6633 if (dl
->major
== (int)major(stb
.st_rdev
) &&
6634 dl
->minor
== (int)minor(stb
.st_rdev
))
6639 pr_err("%s is not in the same imsm set\n", dev
);
6641 } else if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
) {
6642 /* If a volume is present then the current creation attempt
6643 * cannot incorporate new spares because the orom may not
6644 * understand this configuration (all member disks must be
6645 * members of each array in the container).
6647 pr_err("%s is a spare and a volume is already defined for this container\n", dev
);
6648 pr_err("The option-rom requires all member disks to be a member of all volumes\n");
6650 } else if (super
->orom
&& mpb
->num_raid_devs
> 0 &&
6651 mpb
->num_disks
!= raiddisks
) {
6652 pr_err("The option-rom requires all member disks to be a member of all volumes\n");
6656 /* retrieve the largest free space block */
6657 e
= get_extents(super
, dl
);
6662 unsigned long long esize
;
6664 esize
= e
[i
].start
- pos
;
6665 if (esize
>= maxsize
)
6667 pos
= e
[i
].start
+ e
[i
].size
;
6669 } while (e
[i
-1].size
);
6674 pr_err("unable to determine free space for: %s\n",
6678 if (maxsize
< size
) {
6680 pr_err("%s not enough space (%llu < %llu)\n",
6681 dev
, maxsize
, size
);
6685 /* count total number of extents for merge */
6687 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6689 i
+= dl
->extent_cnt
;
6691 maxsize
= merge_extents(super
, i
);
6693 if (!check_env("IMSM_NO_PLATFORM") &&
6694 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
6695 pr_err("attempting to create a second volume with size less then remaining space. Aborting...\n");
6699 if (maxsize
< size
|| maxsize
== 0) {
6702 pr_err("no free space left on device. Aborting...\n");
6704 pr_err("not enough space to create volume of given size (%llu < %llu). Aborting...\n",
6710 *freesize
= maxsize
;
6713 int count
= count_volumes(super
->hba
,
6714 super
->orom
->dpa
, verbose
);
6715 if (super
->orom
->vphba
<= count
) {
6716 pr_vrb("platform does not support more than %d raid volumes.\n",
6717 super
->orom
->vphba
);
6724 static int imsm_get_free_size(struct supertype
*st
, int raiddisks
,
6725 unsigned long long size
, int chunk
,
6726 unsigned long long *freesize
)
6728 struct intel_super
*super
= st
->sb
;
6729 struct imsm_super
*mpb
= super
->anchor
;
6734 unsigned long long maxsize
;
6735 unsigned long long minsize
;
6739 /* find the largest common start free region of the possible disks */
6743 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6749 /* don't activate new spares if we are orom constrained
6750 * and there is already a volume active in the container
6752 if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
)
6755 e
= get_extents(super
, dl
);
6758 for (i
= 1; e
[i
-1].size
; i
++)
6766 maxsize
= merge_extents(super
, extent_cnt
);
6770 minsize
= chunk
* 2;
6772 if (cnt
< raiddisks
||
6773 (super
->orom
&& used
&& used
!= raiddisks
) ||
6774 maxsize
< minsize
||
6776 pr_err("not enough devices with space to create array.\n");
6777 return 0; /* No enough free spaces large enough */
6788 if (!check_env("IMSM_NO_PLATFORM") &&
6789 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
6790 pr_err("attempting to create a second volume with size less then remaining space. Aborting...\n");
6794 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6796 dl
->raiddisk
= cnt
++;
6800 dprintf("imsm: imsm_get_free_size() returns : %llu\n", size
);
6805 static int reserve_space(struct supertype
*st
, int raiddisks
,
6806 unsigned long long size
, int chunk
,
6807 unsigned long long *freesize
)
6809 struct intel_super
*super
= st
->sb
;
6814 rv
= imsm_get_free_size(st
, raiddisks
, size
, chunk
, freesize
);
6817 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6819 dl
->raiddisk
= cnt
++;
6826 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
6827 int raiddisks
, int *chunk
, unsigned long long size
,
6828 unsigned long long data_offset
,
6829 char *dev
, unsigned long long *freesize
,
6837 * if given unused devices create a container
6838 * if given given devices in a container create a member volume
6840 if (level
== LEVEL_CONTAINER
) {
6841 /* Must be a fresh device to add to a container */
6842 return validate_geometry_imsm_container(st
, level
, layout
,
6852 struct intel_super
*super
= st
->sb
;
6853 if (!validate_geometry_imsm_orom(st
->sb
, level
, layout
,
6854 raiddisks
, chunk
, size
,
6857 /* we are being asked to automatically layout a
6858 * new volume based on the current contents of
6859 * the container. If the the parameters can be
6860 * satisfied reserve_space will record the disks,
6861 * start offset, and size of the volume to be
6862 * created. add_to_super and getinfo_super
6863 * detect when autolayout is in progress.
6865 /* assuming that freesize is always given when array is
6867 if (super
->orom
&& freesize
) {
6869 count
= count_volumes(super
->hba
,
6870 super
->orom
->dpa
, verbose
);
6871 if (super
->orom
->vphba
<= count
) {
6872 pr_vrb("platform does not support more than %d raid volumes.\n",
6873 super
->orom
->vphba
);
6878 return reserve_space(st
, raiddisks
, size
,
6884 /* creating in a given container */
6885 return validate_geometry_imsm_volume(st
, level
, layout
,
6886 raiddisks
, chunk
, size
,
6888 dev
, freesize
, verbose
);
6891 /* This device needs to be a device in an 'imsm' container */
6892 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
6895 pr_err("Cannot create this array on device %s\n",
6900 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
6902 pr_err("Cannot open %s: %s\n",
6903 dev
, strerror(errno
));
6906 /* Well, it is in use by someone, maybe an 'imsm' container. */
6907 cfd
= open_container(fd
);
6911 pr_err("Cannot use %s: It is busy\n",
6915 sra
= sysfs_read(cfd
, NULL
, GET_VERSION
);
6916 if (sra
&& sra
->array
.major_version
== -1 &&
6917 strcmp(sra
->text_version
, "imsm") == 0)
6921 /* This is a member of a imsm container. Load the container
6922 * and try to create a volume
6924 struct intel_super
*super
;
6926 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
, NULL
, 1) == 0) {
6928 strcpy(st
->container_devnm
, fd2devnm(cfd
));
6930 return validate_geometry_imsm_volume(st
, level
, layout
,
6932 size
, data_offset
, dev
,
6939 pr_err("failed container membership check\n");
6945 static void default_geometry_imsm(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
6947 struct intel_super
*super
= st
->sb
;
6949 if (level
&& *level
== UnSet
)
6950 *level
= LEVEL_CONTAINER
;
6952 if (level
&& layout
&& *layout
== UnSet
)
6953 *layout
= imsm_level_to_layout(*level
);
6955 if (chunk
&& (*chunk
== UnSet
|| *chunk
== 0))
6956 *chunk
= imsm_default_chunk(super
->orom
);
6959 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
);
6961 static int kill_subarray_imsm(struct supertype
*st
)
6963 /* remove the subarray currently referenced by ->current_vol */
6965 struct intel_dev
**dp
;
6966 struct intel_super
*super
= st
->sb
;
6967 __u8 current_vol
= super
->current_vol
;
6968 struct imsm_super
*mpb
= super
->anchor
;
6970 if (super
->current_vol
< 0)
6972 super
->current_vol
= -1; /* invalidate subarray cursor */
6974 /* block deletions that would change the uuid of active subarrays
6976 * FIXME when immutable ids are available, but note that we'll
6977 * also need to fixup the invalidated/active subarray indexes in
6980 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6983 if (i
< current_vol
)
6985 sprintf(subarray
, "%u", i
);
6986 if (is_subarray_active(subarray
, st
->devnm
)) {
6987 pr_err("deleting subarray-%d would change the UUID of active subarray-%d, aborting\n",
6994 if (st
->update_tail
) {
6995 struct imsm_update_kill_array
*u
= xmalloc(sizeof(*u
));
6997 u
->type
= update_kill_array
;
6998 u
->dev_idx
= current_vol
;
6999 append_metadata_update(st
, u
, sizeof(*u
));
7004 for (dp
= &super
->devlist
; *dp
;)
7005 if ((*dp
)->index
== current_vol
) {
7008 handle_missing(super
, (*dp
)->dev
);
7009 if ((*dp
)->index
> current_vol
)
7014 /* no more raid devices, all active components are now spares,
7015 * but of course failed are still failed
7017 if (--mpb
->num_raid_devs
== 0) {
7020 for (d
= super
->disks
; d
; d
= d
->next
)
7025 super
->updates_pending
++;
7030 static int update_subarray_imsm(struct supertype
*st
, char *subarray
,
7031 char *update
, struct mddev_ident
*ident
)
7033 /* update the subarray currently referenced by ->current_vol */
7034 struct intel_super
*super
= st
->sb
;
7035 struct imsm_super
*mpb
= super
->anchor
;
7037 if (strcmp(update
, "name") == 0) {
7038 char *name
= ident
->name
;
7042 if (is_subarray_active(subarray
, st
->devnm
)) {
7043 pr_err("Unable to update name of active subarray\n");
7047 if (!check_name(super
, name
, 0))
7050 vol
= strtoul(subarray
, &ep
, 10);
7051 if (*ep
!= '\0' || vol
>= super
->anchor
->num_raid_devs
)
7054 if (st
->update_tail
) {
7055 struct imsm_update_rename_array
*u
= xmalloc(sizeof(*u
));
7057 u
->type
= update_rename_array
;
7059 snprintf((char *) u
->name
, MAX_RAID_SERIAL_LEN
, "%s", name
);
7060 append_metadata_update(st
, u
, sizeof(*u
));
7062 struct imsm_dev
*dev
;
7065 dev
= get_imsm_dev(super
, vol
);
7066 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
7067 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7068 dev
= get_imsm_dev(super
, i
);
7069 handle_missing(super
, dev
);
7071 super
->updates_pending
++;
7078 #endif /* MDASSEMBLE */
7080 static int is_gen_migration(struct imsm_dev
*dev
)
7085 if (!dev
->vol
.migr_state
)
7088 if (migr_type(dev
) == MIGR_GEN_MIGR
)
7094 static int is_rebuilding(struct imsm_dev
*dev
)
7096 struct imsm_map
*migr_map
;
7098 if (!dev
->vol
.migr_state
)
7101 if (migr_type(dev
) != MIGR_REBUILD
)
7104 migr_map
= get_imsm_map(dev
, MAP_1
);
7106 if (migr_map
->map_state
== IMSM_T_STATE_DEGRADED
)
7113 static int is_initializing(struct imsm_dev
*dev
)
7115 struct imsm_map
*migr_map
;
7117 if (!dev
->vol
.migr_state
)
7120 if (migr_type(dev
) != MIGR_INIT
)
7123 migr_map
= get_imsm_map(dev
, MAP_1
);
7125 if (migr_map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
7132 static void update_recovery_start(struct intel_super
*super
,
7133 struct imsm_dev
*dev
,
7134 struct mdinfo
*array
)
7136 struct mdinfo
*rebuild
= NULL
;
7140 if (!is_rebuilding(dev
))
7143 /* Find the rebuild target, but punt on the dual rebuild case */
7144 for (d
= array
->devs
; d
; d
= d
->next
)
7145 if (d
->recovery_start
== 0) {
7152 /* (?) none of the disks are marked with
7153 * IMSM_ORD_REBUILD, so assume they are missing and the
7154 * disk_ord_tbl was not correctly updated
7156 dprintf("failed to locate out-of-sync disk\n");
7160 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
7161 rebuild
->recovery_start
= units
* blocks_per_migr_unit(super
, dev
);
7165 static int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
);
7168 static struct mdinfo
*container_content_imsm(struct supertype
*st
, char *subarray
)
7170 /* Given a container loaded by load_super_imsm_all,
7171 * extract information about all the arrays into
7173 * If 'subarray' is given, just extract info about that array.
7175 * For each imsm_dev create an mdinfo, fill it in,
7176 * then look for matching devices in super->disks
7177 * and create appropriate device mdinfo.
7179 struct intel_super
*super
= st
->sb
;
7180 struct imsm_super
*mpb
= super
->anchor
;
7181 struct mdinfo
*rest
= NULL
;
7185 int spare_disks
= 0;
7187 /* do not assemble arrays when not all attributes are supported */
7188 if (imsm_check_attributes(mpb
->attributes
) == 0) {
7190 pr_err("Unsupported attributes in IMSM metadata.Arrays activation is blocked.\n");
7193 /* count spare devices, not used in maps
7195 for (d
= super
->disks
; d
; d
= d
->next
)
7199 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7200 struct imsm_dev
*dev
;
7201 struct imsm_map
*map
;
7202 struct imsm_map
*map2
;
7203 struct mdinfo
*this;
7211 (i
!= strtoul(subarray
, &ep
, 10) || *ep
!= '\0'))
7214 dev
= get_imsm_dev(super
, i
);
7215 map
= get_imsm_map(dev
, MAP_0
);
7216 map2
= get_imsm_map(dev
, MAP_1
);
7218 /* do not publish arrays that are in the middle of an
7219 * unsupported migration
7221 if (dev
->vol
.migr_state
&&
7222 (migr_type(dev
) == MIGR_STATE_CHANGE
)) {
7223 pr_err("cannot assemble volume '%.16s': unsupported migration in progress\n",
7227 /* do not publish arrays that are not support by controller's
7231 this = xmalloc(sizeof(*this));
7233 super
->current_vol
= i
;
7234 getinfo_super_imsm_volume(st
, this, NULL
);
7237 chunk
= __le16_to_cpu(map
->blocks_per_strip
) >> 1;
7238 /* mdadm does not support all metadata features- set the bit in all arrays state */
7239 if (!validate_geometry_imsm_orom(super
,
7240 get_imsm_raid_level(map
), /* RAID level */
7241 imsm_level_to_layout(get_imsm_raid_level(map
)),
7242 map
->num_members
, /* raid disks */
7243 &chunk
, join_u32(dev
->size_low
, dev
->size_high
),
7245 pr_err("IMSM RAID geometry validation failed. Array %s activation is blocked.\n",
7247 this->array
.state
|=
7248 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
7249 (1<<MD_SB_BLOCK_VOLUME
);
7253 /* if array has bad blocks, set suitable bit in all arrays state */
7255 this->array
.state
|=
7256 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
7257 (1<<MD_SB_BLOCK_VOLUME
);
7259 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
7260 unsigned long long recovery_start
;
7261 struct mdinfo
*info_d
;
7268 idx
= get_imsm_disk_idx(dev
, slot
, MAP_0
);
7269 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
7270 for (d
= super
->disks
; d
; d
= d
->next
)
7271 if (d
->index
== idx
)
7274 recovery_start
= MaxSector
;
7277 if (d
&& is_failed(&d
->disk
))
7279 if (ord
& IMSM_ORD_REBUILD
)
7283 * if we skip some disks the array will be assmebled degraded;
7284 * reset resync start to avoid a dirty-degraded
7285 * situation when performing the intial sync
7287 * FIXME handle dirty degraded
7289 if ((skip
|| recovery_start
== 0) && !dev
->vol
.dirty
)
7290 this->resync_start
= MaxSector
;
7294 info_d
= xcalloc(1, sizeof(*info_d
));
7295 info_d
->next
= this->devs
;
7296 this->devs
= info_d
;
7298 info_d
->disk
.number
= d
->index
;
7299 info_d
->disk
.major
= d
->major
;
7300 info_d
->disk
.minor
= d
->minor
;
7301 info_d
->disk
.raid_disk
= slot
;
7302 info_d
->recovery_start
= recovery_start
;
7304 if (slot
< map2
->num_members
)
7305 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
7307 this->array
.spare_disks
++;
7309 if (slot
< map
->num_members
)
7310 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
7312 this->array
.spare_disks
++;
7314 if (info_d
->recovery_start
== MaxSector
)
7315 this->array
.working_disks
++;
7317 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
7318 info_d
->data_offset
= pba_of_lba0(map
);
7320 if (map
->raid_level
== 5) {
7321 info_d
->component_size
=
7322 num_data_stripes(map
) *
7323 map
->blocks_per_strip
;
7325 info_d
->component_size
= blocks_per_member(map
);
7328 info_d
->bb
.supported
= 0;
7329 get_volume_badblocks(super
->bbm_log
, ord_to_idx(ord
),
7330 info_d
->data_offset
,
7331 info_d
->component_size
,
7334 /* now that the disk list is up-to-date fixup recovery_start */
7335 update_recovery_start(super
, dev
, this);
7336 this->array
.spare_disks
+= spare_disks
;
7339 /* check for reshape */
7340 if (this->reshape_active
== 1)
7341 recover_backup_imsm(st
, this);
7349 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
,
7350 int failed
, int look_in_map
)
7352 struct imsm_map
*map
;
7354 map
= get_imsm_map(dev
, look_in_map
);
7357 return map
->map_state
== IMSM_T_STATE_UNINITIALIZED
?
7358 IMSM_T_STATE_UNINITIALIZED
: IMSM_T_STATE_NORMAL
;
7360 switch (get_imsm_raid_level(map
)) {
7362 return IMSM_T_STATE_FAILED
;
7365 if (failed
< map
->num_members
)
7366 return IMSM_T_STATE_DEGRADED
;
7368 return IMSM_T_STATE_FAILED
;
7373 * check to see if any mirrors have failed, otherwise we
7374 * are degraded. Even numbered slots are mirrored on
7378 /* gcc -Os complains that this is unused */
7379 int insync
= insync
;
7381 for (i
= 0; i
< map
->num_members
; i
++) {
7382 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_X
);
7383 int idx
= ord_to_idx(ord
);
7384 struct imsm_disk
*disk
;
7386 /* reset the potential in-sync count on even-numbered
7387 * slots. num_copies is always 2 for imsm raid10
7392 disk
= get_imsm_disk(super
, idx
);
7393 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
7396 /* no in-sync disks left in this mirror the
7400 return IMSM_T_STATE_FAILED
;
7403 return IMSM_T_STATE_DEGRADED
;
7407 return IMSM_T_STATE_DEGRADED
;
7409 return IMSM_T_STATE_FAILED
;
7415 return map
->map_state
;
7418 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
,
7423 struct imsm_disk
*disk
;
7424 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7425 struct imsm_map
*prev
= get_imsm_map(dev
, MAP_1
);
7426 struct imsm_map
*map_for_loop
;
7431 /* at the beginning of migration we set IMSM_ORD_REBUILD on
7432 * disks that are being rebuilt. New failures are recorded to
7433 * map[0]. So we look through all the disks we started with and
7434 * see if any failures are still present, or if any new ones
7438 if (prev
&& (map
->num_members
< prev
->num_members
))
7439 map_for_loop
= prev
;
7441 for (i
= 0; i
< map_for_loop
->num_members
; i
++) {
7443 /* when MAP_X is passed both maps failures are counted
7446 (look_in_map
== MAP_1
|| look_in_map
== MAP_X
) &&
7447 i
< prev
->num_members
) {
7448 ord
= __le32_to_cpu(prev
->disk_ord_tbl
[i
]);
7449 idx_1
= ord_to_idx(ord
);
7451 disk
= get_imsm_disk(super
, idx_1
);
7452 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
7455 if ((look_in_map
== MAP_0
|| look_in_map
== MAP_X
) &&
7456 i
< map
->num_members
) {
7457 ord
= __le32_to_cpu(map
->disk_ord_tbl
[i
]);
7458 idx
= ord_to_idx(ord
);
7461 disk
= get_imsm_disk(super
, idx
);
7462 if (!disk
|| is_failed(disk
) ||
7463 ord
& IMSM_ORD_REBUILD
)
7473 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
7476 struct intel_super
*super
= c
->sb
;
7477 struct imsm_super
*mpb
= super
->anchor
;
7478 struct imsm_update_prealloc_bb_mem u
;
7480 if (atoi(inst
) >= mpb
->num_raid_devs
) {
7481 pr_err("subarry index %d, out of range\n", atoi(inst
));
7485 dprintf("imsm: open_new %s\n", inst
);
7486 a
->info
.container_member
= atoi(inst
);
7488 u
.type
= update_prealloc_badblocks_mem
;
7489 imsm_update_metadata_locally(c
, &u
, sizeof(u
));
7494 static int is_resyncing(struct imsm_dev
*dev
)
7496 struct imsm_map
*migr_map
;
7498 if (!dev
->vol
.migr_state
)
7501 if (migr_type(dev
) == MIGR_INIT
||
7502 migr_type(dev
) == MIGR_REPAIR
)
7505 if (migr_type(dev
) == MIGR_GEN_MIGR
)
7508 migr_map
= get_imsm_map(dev
, MAP_1
);
7510 if (migr_map
->map_state
== IMSM_T_STATE_NORMAL
&&
7511 dev
->vol
.migr_type
!= MIGR_GEN_MIGR
)
7517 /* return true if we recorded new information */
7518 static int mark_failure(struct intel_super
*super
,
7519 struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
7523 struct imsm_map
*map
;
7524 char buf
[MAX_RAID_SERIAL_LEN
+3];
7525 unsigned int len
, shift
= 0;
7527 /* new failures are always set in map[0] */
7528 map
= get_imsm_map(dev
, MAP_0
);
7530 slot
= get_imsm_disk_slot(map
, idx
);
7534 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
7535 if (is_failed(disk
) && (ord
& IMSM_ORD_REBUILD
))
7538 memcpy(buf
, disk
->serial
, MAX_RAID_SERIAL_LEN
);
7539 buf
[MAX_RAID_SERIAL_LEN
] = '\000';
7541 if ((len
= strlen(buf
)) >= MAX_RAID_SERIAL_LEN
)
7542 shift
= len
- MAX_RAID_SERIAL_LEN
+ 1;
7543 strncpy((char *)disk
->serial
, &buf
[shift
], MAX_RAID_SERIAL_LEN
);
7545 disk
->status
|= FAILED_DISK
;
7546 set_imsm_ord_tbl_ent(map
, slot
, idx
| IMSM_ORD_REBUILD
);
7547 /* mark failures in second map if second map exists and this disk
7549 * This is valid for migration, initialization and rebuild
7551 if (dev
->vol
.migr_state
) {
7552 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
7553 int slot2
= get_imsm_disk_slot(map2
, idx
);
7555 if (slot2
< map2
->num_members
&& slot2
>= 0)
7556 set_imsm_ord_tbl_ent(map2
, slot2
,
7557 idx
| IMSM_ORD_REBUILD
);
7559 if (map
->failed_disk_num
== 0xff)
7560 map
->failed_disk_num
= slot
;
7562 clear_disk_badblocks(super
->bbm_log
, ord_to_idx(ord
));
7567 static void mark_missing(struct intel_super
*super
,
7568 struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
7570 mark_failure(super
, dev
, disk
, idx
);
7572 if (disk
->scsi_id
== __cpu_to_le32(~(__u32
)0))
7575 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
7576 memmove(&disk
->serial
[0], &disk
->serial
[1], MAX_RAID_SERIAL_LEN
- 1);
7579 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
)
7583 if (!super
->missing
)
7586 /* When orom adds replacement for missing disk it does
7587 * not remove entry of missing disk, but just updates map with
7588 * new added disk. So it is not enough just to test if there is
7589 * any missing disk, we have to look if there are any failed disks
7590 * in map to stop migration */
7592 dprintf("imsm: mark missing\n");
7593 /* end process for initialization and rebuild only
7595 if (is_gen_migration(dev
) == 0) {
7599 failed
= imsm_count_failed(super
, dev
, MAP_0
);
7600 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7603 end_migration(dev
, super
, map_state
);
7605 for (dl
= super
->missing
; dl
; dl
= dl
->next
)
7606 mark_missing(super
, dev
, &dl
->disk
, dl
->index
);
7607 super
->updates_pending
++;
7610 static unsigned long long imsm_set_array_size(struct imsm_dev
*dev
,
7613 int used_disks
= imsm_num_data_members(dev
, MAP_0
);
7614 unsigned long long array_blocks
;
7615 struct imsm_map
*map
;
7617 if (used_disks
== 0) {
7618 /* when problems occures
7619 * return current array_blocks value
7621 array_blocks
= __le32_to_cpu(dev
->size_high
);
7622 array_blocks
= array_blocks
<< 32;
7623 array_blocks
+= __le32_to_cpu(dev
->size_low
);
7625 return array_blocks
;
7628 /* set array size in metadata
7630 if (new_size
<= 0) {
7631 /* OLCE size change is caused by added disks
7633 map
= get_imsm_map(dev
, MAP_0
);
7634 array_blocks
= blocks_per_member(map
) * used_disks
;
7636 /* Online Volume Size Change
7637 * Using available free space
7639 array_blocks
= new_size
;
7642 /* round array size down to closest MB
7644 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
7645 dev
->size_low
= __cpu_to_le32((__u32
)array_blocks
);
7646 dev
->size_high
= __cpu_to_le32((__u32
)(array_blocks
>> 32));
7648 return array_blocks
;
7651 static void imsm_set_disk(struct active_array
*a
, int n
, int state
);
7653 static void imsm_progress_container_reshape(struct intel_super
*super
)
7655 /* if no device has a migr_state, but some device has a
7656 * different number of members than the previous device, start
7657 * changing the number of devices in this device to match
7660 struct imsm_super
*mpb
= super
->anchor
;
7661 int prev_disks
= -1;
7665 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7666 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
7667 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7668 struct imsm_map
*map2
;
7669 int prev_num_members
;
7671 if (dev
->vol
.migr_state
)
7674 if (prev_disks
== -1)
7675 prev_disks
= map
->num_members
;
7676 if (prev_disks
== map
->num_members
)
7679 /* OK, this array needs to enter reshape mode.
7680 * i.e it needs a migr_state
7683 copy_map_size
= sizeof_imsm_map(map
);
7684 prev_num_members
= map
->num_members
;
7685 map
->num_members
= prev_disks
;
7686 dev
->vol
.migr_state
= 1;
7687 dev
->vol
.curr_migr_unit
= 0;
7688 set_migr_type(dev
, MIGR_GEN_MIGR
);
7689 for (i
= prev_num_members
;
7690 i
< map
->num_members
; i
++)
7691 set_imsm_ord_tbl_ent(map
, i
, i
);
7692 map2
= get_imsm_map(dev
, MAP_1
);
7693 /* Copy the current map */
7694 memcpy(map2
, map
, copy_map_size
);
7695 map2
->num_members
= prev_num_members
;
7697 imsm_set_array_size(dev
, -1);
7698 super
->clean_migration_record_by_mdmon
= 1;
7699 super
->updates_pending
++;
7703 /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild
7704 * states are handled in imsm_set_disk() with one exception, when a
7705 * resync is stopped due to a new failure this routine will set the
7706 * 'degraded' state for the array.
7708 static int imsm_set_array_state(struct active_array
*a
, int consistent
)
7710 int inst
= a
->info
.container_member
;
7711 struct intel_super
*super
= a
->container
->sb
;
7712 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7713 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7714 int failed
= imsm_count_failed(super
, dev
, MAP_0
);
7715 __u8 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7716 __u32 blocks_per_unit
;
7718 if (dev
->vol
.migr_state
&&
7719 dev
->vol
.migr_type
== MIGR_GEN_MIGR
) {
7720 /* array state change is blocked due to reshape action
7722 * - abort the reshape (if last_checkpoint is 0 and action!= reshape)
7723 * - finish the reshape (if last_checkpoint is big and action != reshape)
7724 * - update curr_migr_unit
7726 if (a
->curr_action
== reshape
) {
7727 /* still reshaping, maybe update curr_migr_unit */
7728 goto mark_checkpoint
;
7730 if (a
->last_checkpoint
== 0 && a
->prev_action
== reshape
) {
7731 /* for some reason we aborted the reshape.
7733 * disable automatic metadata rollback
7734 * user action is required to recover process
7737 struct imsm_map
*map2
=
7738 get_imsm_map(dev
, MAP_1
);
7739 dev
->vol
.migr_state
= 0;
7740 set_migr_type(dev
, 0);
7741 dev
->vol
.curr_migr_unit
= 0;
7743 sizeof_imsm_map(map2
));
7744 super
->updates_pending
++;
7747 if (a
->last_checkpoint
>= a
->info
.component_size
) {
7748 unsigned long long array_blocks
;
7752 used_disks
= imsm_num_data_members(dev
, MAP_0
);
7753 if (used_disks
> 0) {
7755 blocks_per_member(map
) *
7757 /* round array size down to closest MB
7759 array_blocks
= (array_blocks
7760 >> SECT_PER_MB_SHIFT
)
7761 << SECT_PER_MB_SHIFT
;
7762 a
->info
.custom_array_size
= array_blocks
;
7763 /* encourage manager to update array
7767 a
->check_reshape
= 1;
7769 /* finalize online capacity expansion/reshape */
7770 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
7772 mdi
->disk
.raid_disk
,
7775 imsm_progress_container_reshape(super
);
7780 /* before we activate this array handle any missing disks */
7781 if (consistent
== 2)
7782 handle_missing(super
, dev
);
7784 if (consistent
== 2 &&
7785 (!is_resync_complete(&a
->info
) ||
7786 map_state
!= IMSM_T_STATE_NORMAL
||
7787 dev
->vol
.migr_state
))
7790 if (is_resync_complete(&a
->info
)) {
7791 /* complete intialization / resync,
7792 * recovery and interrupted recovery is completed in
7795 if (is_resyncing(dev
)) {
7796 dprintf("imsm: mark resync done\n");
7797 end_migration(dev
, super
, map_state
);
7798 super
->updates_pending
++;
7799 a
->last_checkpoint
= 0;
7801 } else if ((!is_resyncing(dev
) && !failed
) &&
7802 (imsm_reshape_blocks_arrays_changes(super
) == 0)) {
7803 /* mark the start of the init process if nothing is failed */
7804 dprintf("imsm: mark resync start\n");
7805 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
7806 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_INIT
);
7808 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_REPAIR
);
7809 super
->updates_pending
++;
7813 /* skip checkpointing for general migration,
7814 * it is controlled in mdadm
7816 if (is_gen_migration(dev
))
7817 goto skip_mark_checkpoint
;
7819 /* check if we can update curr_migr_unit from resync_start, recovery_start */
7820 blocks_per_unit
= blocks_per_migr_unit(super
, dev
);
7821 if (blocks_per_unit
) {
7825 units
= a
->last_checkpoint
/ blocks_per_unit
;
7828 /* check that we did not overflow 32-bits, and that
7829 * curr_migr_unit needs updating
7831 if (units32
== units
&&
7833 __le32_to_cpu(dev
->vol
.curr_migr_unit
) != units32
) {
7834 dprintf("imsm: mark checkpoint (%u)\n", units32
);
7835 dev
->vol
.curr_migr_unit
= __cpu_to_le32(units32
);
7836 super
->updates_pending
++;
7840 skip_mark_checkpoint
:
7841 /* mark dirty / clean */
7842 if (dev
->vol
.dirty
!= !consistent
) {
7843 dprintf("imsm: mark '%s'\n", consistent
? "clean" : "dirty");
7848 super
->updates_pending
++;
7854 static int imsm_disk_slot_to_ord(struct active_array
*a
, int slot
)
7856 int inst
= a
->info
.container_member
;
7857 struct intel_super
*super
= a
->container
->sb
;
7858 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7859 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7861 if (slot
> map
->num_members
) {
7862 pr_err("imsm: imsm_disk_slot_to_ord %d out of range 0..%d\n",
7863 slot
, map
->num_members
- 1);
7870 return get_imsm_ord_tbl_ent(dev
, slot
, MAP_0
);
7873 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
7875 int inst
= a
->info
.container_member
;
7876 struct intel_super
*super
= a
->container
->sb
;
7877 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7878 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7879 struct imsm_disk
*disk
;
7881 int recovery_not_finished
= 0;
7886 ord
= imsm_disk_slot_to_ord(a
, n
);
7890 dprintf("imsm: set_disk %d:%x\n", n
, state
);
7891 disk
= get_imsm_disk(super
, ord_to_idx(ord
));
7893 /* check for new failures */
7894 if (state
& DS_FAULTY
) {
7895 if (mark_failure(super
, dev
, disk
, ord_to_idx(ord
)))
7896 super
->updates_pending
++;
7899 /* check if in_sync */
7900 if (state
& DS_INSYNC
&& ord
& IMSM_ORD_REBUILD
&& is_rebuilding(dev
)) {
7901 struct imsm_map
*migr_map
= get_imsm_map(dev
, MAP_1
);
7903 set_imsm_ord_tbl_ent(migr_map
, n
, ord_to_idx(ord
));
7904 super
->updates_pending
++;
7907 failed
= imsm_count_failed(super
, dev
, MAP_0
);
7908 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7910 /* check if recovery complete, newly degraded, or failed */
7911 dprintf("imsm: Detected transition to state ");
7912 switch (map_state
) {
7913 case IMSM_T_STATE_NORMAL
: /* transition to normal state */
7914 dprintf("normal: ");
7915 if (is_rebuilding(dev
)) {
7916 dprintf_cont("while rebuilding");
7917 /* check if recovery is really finished */
7918 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
7919 if (mdi
->recovery_start
!= MaxSector
) {
7920 recovery_not_finished
= 1;
7923 if (recovery_not_finished
) {
7925 dprintf("Rebuild has not finished yet, state not changed");
7926 if (a
->last_checkpoint
< mdi
->recovery_start
) {
7927 a
->last_checkpoint
= mdi
->recovery_start
;
7928 super
->updates_pending
++;
7932 end_migration(dev
, super
, map_state
);
7933 map
= get_imsm_map(dev
, MAP_0
);
7934 map
->failed_disk_num
= ~0;
7935 super
->updates_pending
++;
7936 a
->last_checkpoint
= 0;
7939 if (is_gen_migration(dev
)) {
7940 dprintf_cont("while general migration");
7941 if (a
->last_checkpoint
>= a
->info
.component_size
)
7942 end_migration(dev
, super
, map_state
);
7944 map
->map_state
= map_state
;
7945 map
= get_imsm_map(dev
, MAP_0
);
7946 map
->failed_disk_num
= ~0;
7947 super
->updates_pending
++;
7951 case IMSM_T_STATE_DEGRADED
: /* transition to degraded state */
7952 dprintf_cont("degraded: ");
7953 if (map
->map_state
!= map_state
&& !dev
->vol
.migr_state
) {
7954 dprintf_cont("mark degraded");
7955 map
->map_state
= map_state
;
7956 super
->updates_pending
++;
7957 a
->last_checkpoint
= 0;
7960 if (is_rebuilding(dev
)) {
7961 dprintf_cont("while rebuilding.");
7962 if (map
->map_state
!= map_state
) {
7963 dprintf_cont(" Map state change");
7964 end_migration(dev
, super
, map_state
);
7965 super
->updates_pending
++;
7969 if (is_gen_migration(dev
)) {
7970 dprintf_cont("while general migration");
7971 if (a
->last_checkpoint
>= a
->info
.component_size
)
7972 end_migration(dev
, super
, map_state
);
7974 map
->map_state
= map_state
;
7975 manage_second_map(super
, dev
);
7977 super
->updates_pending
++;
7980 if (is_initializing(dev
)) {
7981 dprintf_cont("while initialization.");
7982 map
->map_state
= map_state
;
7983 super
->updates_pending
++;
7987 case IMSM_T_STATE_FAILED
: /* transition to failed state */
7988 dprintf_cont("failed: ");
7989 if (is_gen_migration(dev
)) {
7990 dprintf_cont("while general migration");
7991 map
->map_state
= map_state
;
7992 super
->updates_pending
++;
7995 if (map
->map_state
!= map_state
) {
7996 dprintf_cont("mark failed");
7997 end_migration(dev
, super
, map_state
);
7998 super
->updates_pending
++;
7999 a
->last_checkpoint
= 0;
8004 dprintf_cont("state %i\n", map_state
);
8009 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
)
8012 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
8013 unsigned long long dsize
;
8014 unsigned long long sectors
;
8015 unsigned int sector_size
;
8017 get_dev_sector_size(fd
, NULL
, §or_size
);
8018 get_dev_size(fd
, NULL
, &dsize
);
8020 if (mpb_size
> sector_size
) {
8021 /* -1 to account for anchor */
8022 sectors
= mpb_sectors(mpb
, sector_size
) - 1;
8024 /* write the extended mpb to the sectors preceeding the anchor */
8025 if (lseek64(fd
, dsize
- (sector_size
* (2 + sectors
)),
8029 if ((unsigned long long)write(fd
, buf
+ sector_size
,
8030 sector_size
* sectors
) != sector_size
* sectors
)
8034 /* first block is stored on second to last sector of the disk */
8035 if (lseek64(fd
, dsize
- (sector_size
* 2), SEEK_SET
) < 0)
8038 if (write(fd
, buf
, sector_size
) != sector_size
)
8044 static void imsm_sync_metadata(struct supertype
*container
)
8046 struct intel_super
*super
= container
->sb
;
8048 dprintf("sync metadata: %d\n", super
->updates_pending
);
8049 if (!super
->updates_pending
)
8052 write_super_imsm(container
, 0);
8054 super
->updates_pending
= 0;
8057 static struct dl
*imsm_readd(struct intel_super
*super
, int idx
, struct active_array
*a
)
8059 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
8060 int i
= get_imsm_disk_idx(dev
, idx
, MAP_X
);
8063 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
8067 if (dl
&& is_failed(&dl
->disk
))
8071 dprintf("found %x:%x\n", dl
->major
, dl
->minor
);
8076 static struct dl
*imsm_add_spare(struct intel_super
*super
, int slot
,
8077 struct active_array
*a
, int activate_new
,
8078 struct mdinfo
*additional_test_list
)
8080 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
8081 int idx
= get_imsm_disk_idx(dev
, slot
, MAP_X
);
8082 struct imsm_super
*mpb
= super
->anchor
;
8083 struct imsm_map
*map
;
8084 unsigned long long pos
;
8089 __u32 array_start
= 0;
8090 __u32 array_end
= 0;
8092 struct mdinfo
*test_list
;
8094 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
8095 /* If in this array, skip */
8096 for (d
= a
->info
.devs
; d
; d
= d
->next
)
8097 if (d
->state_fd
>= 0 &&
8098 d
->disk
.major
== dl
->major
&&
8099 d
->disk
.minor
== dl
->minor
) {
8100 dprintf("%x:%x already in array\n",
8101 dl
->major
, dl
->minor
);
8106 test_list
= additional_test_list
;
8108 if (test_list
->disk
.major
== dl
->major
&&
8109 test_list
->disk
.minor
== dl
->minor
) {
8110 dprintf("%x:%x already in additional test list\n",
8111 dl
->major
, dl
->minor
);
8114 test_list
= test_list
->next
;
8119 /* skip in use or failed drives */
8120 if (is_failed(&dl
->disk
) || idx
== dl
->index
||
8122 dprintf("%x:%x status (failed: %d index: %d)\n",
8123 dl
->major
, dl
->minor
, is_failed(&dl
->disk
), idx
);
8127 /* skip pure spares when we are looking for partially
8128 * assimilated drives
8130 if (dl
->index
== -1 && !activate_new
)
8133 /* Does this unused device have the requisite free space?
8134 * It needs to be able to cover all member volumes
8136 ex
= get_extents(super
, dl
);
8138 dprintf("cannot get extents\n");
8141 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
8142 dev
= get_imsm_dev(super
, i
);
8143 map
= get_imsm_map(dev
, MAP_0
);
8145 /* check if this disk is already a member of
8148 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
8154 array_start
= pba_of_lba0(map
);
8155 array_end
= array_start
+
8156 blocks_per_member(map
) - 1;
8159 /* check that we can start at pba_of_lba0 with
8160 * blocks_per_member of space
8162 if (array_start
>= pos
&& array_end
< ex
[j
].start
) {
8166 pos
= ex
[j
].start
+ ex
[j
].size
;
8168 } while (ex
[j
-1].size
);
8175 if (i
< mpb
->num_raid_devs
) {
8176 dprintf("%x:%x does not have %u to %u available\n",
8177 dl
->major
, dl
->minor
, array_start
, array_end
);
8187 static int imsm_rebuild_allowed(struct supertype
*cont
, int dev_idx
, int failed
)
8189 struct imsm_dev
*dev2
;
8190 struct imsm_map
*map
;
8196 dev2
= get_imsm_dev(cont
->sb
, dev_idx
);
8198 state
= imsm_check_degraded(cont
->sb
, dev2
, failed
, MAP_0
);
8199 if (state
== IMSM_T_STATE_FAILED
) {
8200 map
= get_imsm_map(dev2
, MAP_0
);
8203 for (slot
= 0; slot
< map
->num_members
; slot
++) {
8205 * Check if failed disks are deleted from intel
8206 * disk list or are marked to be deleted
8208 idx
= get_imsm_disk_idx(dev2
, slot
, MAP_X
);
8209 idisk
= get_imsm_dl_disk(cont
->sb
, idx
);
8211 * Do not rebuild the array if failed disks
8212 * from failed sub-array are not removed from
8216 is_failed(&idisk
->disk
) &&
8217 (idisk
->action
!= DISK_REMOVE
))
8225 static struct mdinfo
*imsm_activate_spare(struct active_array
*a
,
8226 struct metadata_update
**updates
)
8229 * Find a device with unused free space and use it to replace a
8230 * failed/vacant region in an array. We replace failed regions one a
8231 * array at a time. The result is that a new spare disk will be added
8232 * to the first failed array and after the monitor has finished
8233 * propagating failures the remainder will be consumed.
8235 * FIXME add a capability for mdmon to request spares from another
8239 struct intel_super
*super
= a
->container
->sb
;
8240 int inst
= a
->info
.container_member
;
8241 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
8242 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8243 int failed
= a
->info
.array
.raid_disks
;
8244 struct mdinfo
*rv
= NULL
;
8247 struct metadata_update
*mu
;
8249 struct imsm_update_activate_spare
*u
;
8254 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
8255 if ((d
->curr_state
& DS_FAULTY
) &&
8257 /* wait for Removal to happen */
8259 if (d
->state_fd
>= 0)
8263 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
8264 inst
, failed
, a
->info
.array
.raid_disks
, a
->info
.array
.level
);
8266 if (imsm_reshape_blocks_arrays_changes(super
))
8269 /* Cannot activate another spare if rebuild is in progress already
8271 if (is_rebuilding(dev
)) {
8272 dprintf("imsm: No spare activation allowed. Rebuild in progress already.\n");
8276 if (a
->info
.array
.level
== 4)
8277 /* No repair for takeovered array
8278 * imsm doesn't support raid4
8282 if (imsm_check_degraded(super
, dev
, failed
, MAP_0
) !=
8283 IMSM_T_STATE_DEGRADED
)
8286 if (get_imsm_map(dev
, MAP_0
)->map_state
== IMSM_T_STATE_UNINITIALIZED
) {
8287 dprintf("imsm: No spare activation allowed. Volume is not initialized.\n");
8292 * If there are any failed disks check state of the other volume.
8293 * Block rebuild if the another one is failed until failed disks
8294 * are removed from container.
8297 dprintf("found failed disks in %.*s, check if there anotherfailed sub-array.\n",
8298 MAX_RAID_SERIAL_LEN
, dev
->volume
);
8299 /* check if states of the other volumes allow for rebuild */
8300 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
8302 allowed
= imsm_rebuild_allowed(a
->container
,
8310 /* For each slot, if it is not working, find a spare */
8311 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
8312 for (d
= a
->info
.devs
; d
; d
= d
->next
)
8313 if (d
->disk
.raid_disk
== i
)
8315 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
8316 if (d
&& (d
->state_fd
>= 0))
8320 * OK, this device needs recovery. Try to re-add the
8321 * previous occupant of this slot, if this fails see if
8322 * we can continue the assimilation of a spare that was
8323 * partially assimilated, finally try to activate a new
8326 dl
= imsm_readd(super
, i
, a
);
8328 dl
= imsm_add_spare(super
, i
, a
, 0, rv
);
8330 dl
= imsm_add_spare(super
, i
, a
, 1, rv
);
8334 /* found a usable disk with enough space */
8335 di
= xcalloc(1, sizeof(*di
));
8337 /* dl->index will be -1 in the case we are activating a
8338 * pristine spare. imsm_process_update() will create a
8339 * new index in this case. Once a disk is found to be
8340 * failed in all member arrays it is kicked from the
8343 di
->disk
.number
= dl
->index
;
8345 /* (ab)use di->devs to store a pointer to the device
8348 di
->devs
= (struct mdinfo
*) dl
;
8350 di
->disk
.raid_disk
= i
;
8351 di
->disk
.major
= dl
->major
;
8352 di
->disk
.minor
= dl
->minor
;
8354 di
->recovery_start
= 0;
8355 di
->data_offset
= pba_of_lba0(map
);
8356 di
->component_size
= a
->info
.component_size
;
8357 di
->container_member
= inst
;
8358 di
->bb
.supported
= 0;
8359 super
->random
= random32();
8363 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
8364 i
, di
->data_offset
);
8368 /* No spares found */
8370 /* Now 'rv' has a list of devices to return.
8371 * Create a metadata_update record to update the
8372 * disk_ord_tbl for the array
8374 mu
= xmalloc(sizeof(*mu
));
8375 mu
->buf
= xcalloc(num_spares
,
8376 sizeof(struct imsm_update_activate_spare
));
8378 mu
->space_list
= NULL
;
8379 mu
->len
= sizeof(struct imsm_update_activate_spare
) * num_spares
;
8380 mu
->next
= *updates
;
8381 u
= (struct imsm_update_activate_spare
*) mu
->buf
;
8383 for (di
= rv
; di
; di
= di
->next
) {
8384 u
->type
= update_activate_spare
;
8385 u
->dl
= (struct dl
*) di
->devs
;
8387 u
->slot
= di
->disk
.raid_disk
;
8398 static int disks_overlap(struct intel_super
*super
, int idx
, struct imsm_update_create_array
*u
)
8400 struct imsm_dev
*dev
= get_imsm_dev(super
, idx
);
8401 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8402 struct imsm_map
*new_map
= get_imsm_map(&u
->dev
, MAP_0
);
8403 struct disk_info
*inf
= get_disk_info(u
);
8404 struct imsm_disk
*disk
;
8408 for (i
= 0; i
< map
->num_members
; i
++) {
8409 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
, MAP_X
));
8410 for (j
= 0; j
< new_map
->num_members
; j
++)
8411 if (serialcmp(disk
->serial
, inf
[j
].serial
) == 0)
8418 static struct dl
*get_disk_super(struct intel_super
*super
, int major
, int minor
)
8422 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
8423 if (dl
->major
== major
&& dl
->minor
== minor
)
8428 static int remove_disk_super(struct intel_super
*super
, int major
, int minor
)
8434 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
8435 if (dl
->major
== major
&& dl
->minor
== minor
) {
8438 prev
->next
= dl
->next
;
8440 super
->disks
= dl
->next
;
8442 __free_imsm_disk(dl
);
8443 dprintf("removed %x:%x\n", major
, minor
);
8451 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
);
8453 static int add_remove_disk_update(struct intel_super
*super
)
8455 int check_degraded
= 0;
8458 /* add/remove some spares to/from the metadata/contrainer */
8459 while (super
->disk_mgmt_list
) {
8460 struct dl
*disk_cfg
;
8462 disk_cfg
= super
->disk_mgmt_list
;
8463 super
->disk_mgmt_list
= disk_cfg
->next
;
8464 disk_cfg
->next
= NULL
;
8466 if (disk_cfg
->action
== DISK_ADD
) {
8467 disk_cfg
->next
= super
->disks
;
8468 super
->disks
= disk_cfg
;
8470 dprintf("added %x:%x\n",
8471 disk_cfg
->major
, disk_cfg
->minor
);
8472 } else if (disk_cfg
->action
== DISK_REMOVE
) {
8473 dprintf("Disk remove action processed: %x.%x\n",
8474 disk_cfg
->major
, disk_cfg
->minor
);
8475 disk
= get_disk_super(super
,
8479 /* store action status */
8480 disk
->action
= DISK_REMOVE
;
8481 /* remove spare disks only */
8482 if (disk
->index
== -1) {
8483 remove_disk_super(super
,
8488 /* release allocate disk structure */
8489 __free_imsm_disk(disk_cfg
);
8492 return check_degraded
;
8495 static int apply_reshape_migration_update(struct imsm_update_reshape_migration
*u
,
8496 struct intel_super
*super
,
8499 struct intel_dev
*id
;
8500 void **tofree
= NULL
;
8503 dprintf("(enter)\n");
8504 if (u
->subdev
< 0 || u
->subdev
> 1) {
8505 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
8508 if (space_list
== NULL
|| *space_list
== NULL
) {
8509 dprintf("imsm: Error: Memory is not allocated\n");
8513 for (id
= super
->devlist
; id
; id
= id
->next
) {
8514 if (id
->index
== (unsigned)u
->subdev
) {
8515 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
8516 struct imsm_map
*map
;
8517 struct imsm_dev
*new_dev
=
8518 (struct imsm_dev
*)*space_list
;
8519 struct imsm_map
*migr_map
= get_imsm_map(dev
, MAP_1
);
8521 struct dl
*new_disk
;
8523 if (new_dev
== NULL
)
8525 *space_list
= **space_list
;
8526 memcpy(new_dev
, dev
, sizeof_imsm_dev(dev
, 0));
8527 map
= get_imsm_map(new_dev
, MAP_0
);
8529 dprintf("imsm: Error: migration in progress");
8533 to_state
= map
->map_state
;
8534 if ((u
->new_level
== 5) && (map
->raid_level
== 0)) {
8536 /* this should not happen */
8537 if (u
->new_disks
[0] < 0) {
8538 map
->failed_disk_num
=
8539 map
->num_members
- 1;
8540 to_state
= IMSM_T_STATE_DEGRADED
;
8542 to_state
= IMSM_T_STATE_NORMAL
;
8544 migrate(new_dev
, super
, to_state
, MIGR_GEN_MIGR
);
8545 if (u
->new_level
> -1)
8546 map
->raid_level
= u
->new_level
;
8547 migr_map
= get_imsm_map(new_dev
, MAP_1
);
8548 if ((u
->new_level
== 5) &&
8549 (migr_map
->raid_level
== 0)) {
8550 int ord
= map
->num_members
- 1;
8551 migr_map
->num_members
--;
8552 if (u
->new_disks
[0] < 0)
8553 ord
|= IMSM_ORD_REBUILD
;
8554 set_imsm_ord_tbl_ent(map
,
8555 map
->num_members
- 1,
8559 tofree
= (void **)dev
;
8561 /* update chunk size
8563 if (u
->new_chunksize
> 0) {
8564 unsigned long long num_data_stripes
;
8566 imsm_num_data_members(dev
, MAP_0
);
8568 if (used_disks
== 0)
8571 map
->blocks_per_strip
=
8572 __cpu_to_le16(u
->new_chunksize
* 2);
8574 (join_u32(dev
->size_low
, dev
->size_high
)
8576 num_data_stripes
/= map
->blocks_per_strip
;
8577 num_data_stripes
/= map
->num_domains
;
8578 set_num_data_stripes(map
, num_data_stripes
);
8583 if (u
->new_level
!= 5 || migr_map
->raid_level
!= 0 ||
8584 migr_map
->raid_level
== map
->raid_level
)
8587 if (u
->new_disks
[0] >= 0) {
8590 new_disk
= get_disk_super(super
,
8591 major(u
->new_disks
[0]),
8592 minor(u
->new_disks
[0]));
8593 dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n",
8594 major(u
->new_disks
[0]),
8595 minor(u
->new_disks
[0]),
8596 new_disk
, new_disk
->index
);
8597 if (new_disk
== NULL
)
8598 goto error_disk_add
;
8600 new_disk
->index
= map
->num_members
- 1;
8601 /* slot to fill in autolayout
8603 new_disk
->raiddisk
= new_disk
->index
;
8604 new_disk
->disk
.status
|= CONFIGURED_DISK
;
8605 new_disk
->disk
.status
&= ~SPARE_DISK
;
8607 goto error_disk_add
;
8610 *tofree
= *space_list
;
8611 /* calculate new size
8613 imsm_set_array_size(new_dev
, -1);
8620 *space_list
= tofree
;
8624 dprintf("Error: imsm: Cannot find disk.\n");
8628 static int apply_size_change_update(struct imsm_update_size_change
*u
,
8629 struct intel_super
*super
)
8631 struct intel_dev
*id
;
8634 dprintf("(enter)\n");
8635 if (u
->subdev
< 0 || u
->subdev
> 1) {
8636 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
8640 for (id
= super
->devlist
; id
; id
= id
->next
) {
8641 if (id
->index
== (unsigned)u
->subdev
) {
8642 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
8643 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8644 int used_disks
= imsm_num_data_members(dev
, MAP_0
);
8645 unsigned long long blocks_per_member
;
8646 unsigned long long num_data_stripes
;
8648 /* calculate new size
8650 blocks_per_member
= u
->new_size
/ used_disks
;
8651 num_data_stripes
= blocks_per_member
/
8652 map
->blocks_per_strip
;
8653 num_data_stripes
/= map
->num_domains
;
8654 dprintf("(size: %llu, blocks per member: %llu, num_data_stipes: %llu)\n",
8655 u
->new_size
, blocks_per_member
,
8657 set_blocks_per_member(map
, blocks_per_member
);
8658 set_num_data_stripes(map
, num_data_stripes
);
8659 imsm_set_array_size(dev
, u
->new_size
);
8669 static int apply_update_activate_spare(struct imsm_update_activate_spare
*u
,
8670 struct intel_super
*super
,
8671 struct active_array
*active_array
)
8673 struct imsm_super
*mpb
= super
->anchor
;
8674 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->array
);
8675 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8676 struct imsm_map
*migr_map
;
8677 struct active_array
*a
;
8678 struct imsm_disk
*disk
;
8685 int second_map_created
= 0;
8687 for (; u
; u
= u
->next
) {
8688 victim
= get_imsm_disk_idx(dev
, u
->slot
, MAP_X
);
8693 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
8698 pr_err("error: imsm_activate_spare passed an unknown disk (index: %d)\n",
8703 /* count failures (excluding rebuilds and the victim)
8704 * to determine map[0] state
8707 for (i
= 0; i
< map
->num_members
; i
++) {
8710 disk
= get_imsm_disk(super
,
8711 get_imsm_disk_idx(dev
, i
, MAP_X
));
8712 if (!disk
|| is_failed(disk
))
8716 /* adding a pristine spare, assign a new index */
8717 if (dl
->index
< 0) {
8718 dl
->index
= super
->anchor
->num_disks
;
8719 super
->anchor
->num_disks
++;
8722 disk
->status
|= CONFIGURED_DISK
;
8723 disk
->status
&= ~SPARE_DISK
;
8726 to_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
8727 if (!second_map_created
) {
8728 second_map_created
= 1;
8729 map
->map_state
= IMSM_T_STATE_DEGRADED
;
8730 migrate(dev
, super
, to_state
, MIGR_REBUILD
);
8732 map
->map_state
= to_state
;
8733 migr_map
= get_imsm_map(dev
, MAP_1
);
8734 set_imsm_ord_tbl_ent(map
, u
->slot
, dl
->index
);
8735 set_imsm_ord_tbl_ent(migr_map
, u
->slot
,
8736 dl
->index
| IMSM_ORD_REBUILD
);
8738 /* update the family_num to mark a new container
8739 * generation, being careful to record the existing
8740 * family_num in orig_family_num to clean up after
8741 * earlier mdadm versions that neglected to set it.
8743 if (mpb
->orig_family_num
== 0)
8744 mpb
->orig_family_num
= mpb
->family_num
;
8745 mpb
->family_num
+= super
->random
;
8747 /* count arrays using the victim in the metadata */
8749 for (a
= active_array
; a
; a
= a
->next
) {
8750 dev
= get_imsm_dev(super
, a
->info
.container_member
);
8751 map
= get_imsm_map(dev
, MAP_0
);
8753 if (get_imsm_disk_slot(map
, victim
) >= 0)
8757 /* delete the victim if it is no longer being
8763 /* We know that 'manager' isn't touching anything,
8764 * so it is safe to delete
8766 for (dlp
= &super
->disks
; *dlp
; dlp
= &(*dlp
)->next
)
8767 if ((*dlp
)->index
== victim
)
8770 /* victim may be on the missing list */
8772 for (dlp
= &super
->missing
; *dlp
;
8773 dlp
= &(*dlp
)->next
)
8774 if ((*dlp
)->index
== victim
)
8776 imsm_delete(super
, dlp
, victim
);
8783 static int apply_reshape_container_disks_update(struct imsm_update_reshape
*u
,
8784 struct intel_super
*super
,
8787 struct dl
*new_disk
;
8788 struct intel_dev
*id
;
8790 int delta_disks
= u
->new_raid_disks
- u
->old_raid_disks
;
8791 int disk_count
= u
->old_raid_disks
;
8792 void **tofree
= NULL
;
8793 int devices_to_reshape
= 1;
8794 struct imsm_super
*mpb
= super
->anchor
;
8796 unsigned int dev_id
;
8798 dprintf("(enter)\n");
8800 /* enable spares to use in array */
8801 for (i
= 0; i
< delta_disks
; i
++) {
8802 new_disk
= get_disk_super(super
,
8803 major(u
->new_disks
[i
]),
8804 minor(u
->new_disks
[i
]));
8805 dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n",
8806 major(u
->new_disks
[i
]), minor(u
->new_disks
[i
]),
8807 new_disk
, new_disk
->index
);
8808 if (new_disk
== NULL
||
8809 (new_disk
->index
>= 0 &&
8810 new_disk
->index
< u
->old_raid_disks
))
8811 goto update_reshape_exit
;
8812 new_disk
->index
= disk_count
++;
8813 /* slot to fill in autolayout
8815 new_disk
->raiddisk
= new_disk
->index
;
8816 new_disk
->disk
.status
|=
8818 new_disk
->disk
.status
&= ~SPARE_DISK
;
8821 dprintf("imsm: volume set mpb->num_raid_devs = %i\n",
8822 mpb
->num_raid_devs
);
8823 /* manage changes in volume
8825 for (dev_id
= 0; dev_id
< mpb
->num_raid_devs
; dev_id
++) {
8826 void **sp
= *space_list
;
8827 struct imsm_dev
*newdev
;
8828 struct imsm_map
*newmap
, *oldmap
;
8830 for (id
= super
->devlist
; id
; id
= id
->next
) {
8831 if (id
->index
== dev_id
)
8840 /* Copy the dev, but not (all of) the map */
8841 memcpy(newdev
, id
->dev
, sizeof(*newdev
));
8842 oldmap
= get_imsm_map(id
->dev
, MAP_0
);
8843 newmap
= get_imsm_map(newdev
, MAP_0
);
8844 /* Copy the current map */
8845 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
8846 /* update one device only
8848 if (devices_to_reshape
) {
8849 dprintf("imsm: modifying subdev: %i\n",
8851 devices_to_reshape
--;
8852 newdev
->vol
.migr_state
= 1;
8853 newdev
->vol
.curr_migr_unit
= 0;
8854 set_migr_type(newdev
, MIGR_GEN_MIGR
);
8855 newmap
->num_members
= u
->new_raid_disks
;
8856 for (i
= 0; i
< delta_disks
; i
++) {
8857 set_imsm_ord_tbl_ent(newmap
,
8858 u
->old_raid_disks
+ i
,
8859 u
->old_raid_disks
+ i
);
8861 /* New map is correct, now need to save old map
8863 newmap
= get_imsm_map(newdev
, MAP_1
);
8864 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
8866 imsm_set_array_size(newdev
, -1);
8869 sp
= (void **)id
->dev
;
8874 /* Clear migration record */
8875 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
8878 *space_list
= tofree
;
8881 update_reshape_exit
:
8886 static int apply_takeover_update(struct imsm_update_takeover
*u
,
8887 struct intel_super
*super
,
8890 struct imsm_dev
*dev
= NULL
;
8891 struct intel_dev
*dv
;
8892 struct imsm_dev
*dev_new
;
8893 struct imsm_map
*map
;
8897 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
8898 if (dv
->index
== (unsigned int)u
->subarray
) {
8906 map
= get_imsm_map(dev
, MAP_0
);
8908 if (u
->direction
== R10_TO_R0
) {
8909 unsigned long long num_data_stripes
;
8911 map
->num_domains
= 1;
8912 num_data_stripes
= blocks_per_member(map
);
8913 num_data_stripes
/= map
->blocks_per_strip
;
8914 num_data_stripes
/= map
->num_domains
;
8915 set_num_data_stripes(map
, num_data_stripes
);
8917 /* Number of failed disks must be half of initial disk number */
8918 if (imsm_count_failed(super
, dev
, MAP_0
) !=
8919 (map
->num_members
/ 2))
8922 /* iterate through devices to mark removed disks as spare */
8923 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
8924 if (dm
->disk
.status
& FAILED_DISK
) {
8925 int idx
= dm
->index
;
8926 /* update indexes on the disk list */
8927 /* FIXME this loop-with-the-loop looks wrong, I'm not convinced
8928 the index values will end up being correct.... NB */
8929 for (du
= super
->disks
; du
; du
= du
->next
)
8930 if (du
->index
> idx
)
8932 /* mark as spare disk */
8937 map
->num_members
= map
->num_members
/ 2;
8938 map
->map_state
= IMSM_T_STATE_NORMAL
;
8939 map
->num_domains
= 1;
8940 map
->raid_level
= 0;
8941 map
->failed_disk_num
= -1;
8944 if (u
->direction
== R0_TO_R10
) {
8946 /* update slots in current disk list */
8947 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
8951 /* create new *missing* disks */
8952 for (i
= 0; i
< map
->num_members
; i
++) {
8953 space
= *space_list
;
8956 *space_list
= *space
;
8958 memcpy(du
, super
->disks
, sizeof(*du
));
8962 du
->index
= (i
* 2) + 1;
8963 sprintf((char *)du
->disk
.serial
,
8964 " MISSING_%d", du
->index
);
8965 sprintf((char *)du
->serial
,
8966 "MISSING_%d", du
->index
);
8967 du
->next
= super
->missing
;
8968 super
->missing
= du
;
8970 /* create new dev and map */
8971 space
= *space_list
;
8974 *space_list
= *space
;
8975 dev_new
= (void *)space
;
8976 memcpy(dev_new
, dev
, sizeof(*dev
));
8977 /* update new map */
8978 map
= get_imsm_map(dev_new
, MAP_0
);
8979 map
->num_members
= map
->num_members
* 2;
8980 map
->map_state
= IMSM_T_STATE_DEGRADED
;
8981 map
->num_domains
= 2;
8982 map
->raid_level
= 1;
8983 /* replace dev<->dev_new */
8986 /* update disk order table */
8987 for (du
= super
->disks
; du
; du
= du
->next
)
8989 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
8990 for (du
= super
->missing
; du
; du
= du
->next
)
8991 if (du
->index
>= 0) {
8992 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
8993 mark_missing(super
, dv
->dev
, &du
->disk
, du
->index
);
8999 static void imsm_process_update(struct supertype
*st
,
9000 struct metadata_update
*update
)
9003 * crack open the metadata_update envelope to find the update record
9004 * update can be one of:
9005 * update_reshape_container_disks - all the arrays in the container
9006 * are being reshaped to have more devices. We need to mark
9007 * the arrays for general migration and convert selected spares
9008 * into active devices.
9009 * update_activate_spare - a spare device has replaced a failed
9010 * device in an array, update the disk_ord_tbl. If this disk is
9011 * present in all member arrays then also clear the SPARE_DISK
9013 * update_create_array
9015 * update_rename_array
9016 * update_add_remove_disk
9018 struct intel_super
*super
= st
->sb
;
9019 struct imsm_super
*mpb
;
9020 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
9022 /* update requires a larger buf but the allocation failed */
9023 if (super
->next_len
&& !super
->next_buf
) {
9024 super
->next_len
= 0;
9028 if (super
->next_buf
) {
9029 memcpy(super
->next_buf
, super
->buf
, super
->len
);
9031 super
->len
= super
->next_len
;
9032 super
->buf
= super
->next_buf
;
9034 super
->next_len
= 0;
9035 super
->next_buf
= NULL
;
9038 mpb
= super
->anchor
;
9041 case update_general_migration_checkpoint
: {
9042 struct intel_dev
*id
;
9043 struct imsm_update_general_migration_checkpoint
*u
=
9044 (void *)update
->buf
;
9046 dprintf("called for update_general_migration_checkpoint\n");
9048 /* find device under general migration */
9049 for (id
= super
->devlist
; id
; id
= id
->next
) {
9050 if (is_gen_migration(id
->dev
)) {
9051 id
->dev
->vol
.curr_migr_unit
=
9052 __cpu_to_le32(u
->curr_migr_unit
);
9053 super
->updates_pending
++;
9058 case update_takeover
: {
9059 struct imsm_update_takeover
*u
= (void *)update
->buf
;
9060 if (apply_takeover_update(u
, super
, &update
->space_list
)) {
9061 imsm_update_version_info(super
);
9062 super
->updates_pending
++;
9067 case update_reshape_container_disks
: {
9068 struct imsm_update_reshape
*u
= (void *)update
->buf
;
9069 if (apply_reshape_container_disks_update(
9070 u
, super
, &update
->space_list
))
9071 super
->updates_pending
++;
9074 case update_reshape_migration
: {
9075 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
9076 if (apply_reshape_migration_update(
9077 u
, super
, &update
->space_list
))
9078 super
->updates_pending
++;
9081 case update_size_change
: {
9082 struct imsm_update_size_change
*u
= (void *)update
->buf
;
9083 if (apply_size_change_update(u
, super
))
9084 super
->updates_pending
++;
9087 case update_activate_spare
: {
9088 struct imsm_update_activate_spare
*u
= (void *) update
->buf
;
9089 if (apply_update_activate_spare(u
, super
, st
->arrays
))
9090 super
->updates_pending
++;
9093 case update_create_array
: {
9094 /* someone wants to create a new array, we need to be aware of
9095 * a few races/collisions:
9096 * 1/ 'Create' called by two separate instances of mdadm
9097 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
9098 * devices that have since been assimilated via
9100 * In the event this update can not be carried out mdadm will
9101 * (FIX ME) notice that its update did not take hold.
9103 struct imsm_update_create_array
*u
= (void *) update
->buf
;
9104 struct intel_dev
*dv
;
9105 struct imsm_dev
*dev
;
9106 struct imsm_map
*map
, *new_map
;
9107 unsigned long long start
, end
;
9108 unsigned long long new_start
, new_end
;
9110 struct disk_info
*inf
;
9113 /* handle racing creates: first come first serve */
9114 if (u
->dev_idx
< mpb
->num_raid_devs
) {
9115 dprintf("subarray %d already defined\n", u
->dev_idx
);
9119 /* check update is next in sequence */
9120 if (u
->dev_idx
!= mpb
->num_raid_devs
) {
9121 dprintf("can not create array %d expected index %d\n",
9122 u
->dev_idx
, mpb
->num_raid_devs
);
9126 new_map
= get_imsm_map(&u
->dev
, MAP_0
);
9127 new_start
= pba_of_lba0(new_map
);
9128 new_end
= new_start
+ blocks_per_member(new_map
);
9129 inf
= get_disk_info(u
);
9131 /* handle activate_spare versus create race:
9132 * check to make sure that overlapping arrays do not include
9135 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
9136 dev
= get_imsm_dev(super
, i
);
9137 map
= get_imsm_map(dev
, MAP_0
);
9138 start
= pba_of_lba0(map
);
9139 end
= start
+ blocks_per_member(map
);
9140 if ((new_start
>= start
&& new_start
<= end
) ||
9141 (start
>= new_start
&& start
<= new_end
))
9146 if (disks_overlap(super
, i
, u
)) {
9147 dprintf("arrays overlap\n");
9152 /* check that prepare update was successful */
9153 if (!update
->space
) {
9154 dprintf("prepare update failed\n");
9158 /* check that all disks are still active before committing
9159 * changes. FIXME: could we instead handle this by creating a
9160 * degraded array? That's probably not what the user expects,
9161 * so better to drop this update on the floor.
9163 for (i
= 0; i
< new_map
->num_members
; i
++) {
9164 dl
= serial_to_dl(inf
[i
].serial
, super
);
9166 dprintf("disk disappeared\n");
9171 super
->updates_pending
++;
9173 /* convert spares to members and fixup ord_tbl */
9174 for (i
= 0; i
< new_map
->num_members
; i
++) {
9175 dl
= serial_to_dl(inf
[i
].serial
, super
);
9176 if (dl
->index
== -1) {
9177 dl
->index
= mpb
->num_disks
;
9179 dl
->disk
.status
|= CONFIGURED_DISK
;
9180 dl
->disk
.status
&= ~SPARE_DISK
;
9182 set_imsm_ord_tbl_ent(new_map
, i
, dl
->index
);
9187 update
->space
= NULL
;
9188 imsm_copy_dev(dev
, &u
->dev
);
9189 dv
->index
= u
->dev_idx
;
9190 dv
->next
= super
->devlist
;
9191 super
->devlist
= dv
;
9192 mpb
->num_raid_devs
++;
9194 imsm_update_version_info(super
);
9197 /* mdmon knows how to release update->space, but not
9198 * ((struct intel_dev *) update->space)->dev
9200 if (update
->space
) {
9206 case update_kill_array
: {
9207 struct imsm_update_kill_array
*u
= (void *) update
->buf
;
9208 int victim
= u
->dev_idx
;
9209 struct active_array
*a
;
9210 struct intel_dev
**dp
;
9211 struct imsm_dev
*dev
;
9213 /* sanity check that we are not affecting the uuid of
9214 * active arrays, or deleting an active array
9216 * FIXME when immutable ids are available, but note that
9217 * we'll also need to fixup the invalidated/active
9218 * subarray indexes in mdstat
9220 for (a
= st
->arrays
; a
; a
= a
->next
)
9221 if (a
->info
.container_member
>= victim
)
9223 /* by definition if mdmon is running at least one array
9224 * is active in the container, so checking
9225 * mpb->num_raid_devs is just extra paranoia
9227 dev
= get_imsm_dev(super
, victim
);
9228 if (a
|| !dev
|| mpb
->num_raid_devs
== 1) {
9229 dprintf("failed to delete subarray-%d\n", victim
);
9233 for (dp
= &super
->devlist
; *dp
;)
9234 if ((*dp
)->index
== (unsigned)super
->current_vol
) {
9237 if ((*dp
)->index
> (unsigned)victim
)
9241 mpb
->num_raid_devs
--;
9242 super
->updates_pending
++;
9245 case update_rename_array
: {
9246 struct imsm_update_rename_array
*u
= (void *) update
->buf
;
9247 char name
[MAX_RAID_SERIAL_LEN
+1];
9248 int target
= u
->dev_idx
;
9249 struct active_array
*a
;
9250 struct imsm_dev
*dev
;
9252 /* sanity check that we are not affecting the uuid of
9255 snprintf(name
, MAX_RAID_SERIAL_LEN
, "%s", (char *) u
->name
);
9256 name
[MAX_RAID_SERIAL_LEN
] = '\0';
9257 for (a
= st
->arrays
; a
; a
= a
->next
)
9258 if (a
->info
.container_member
== target
)
9260 dev
= get_imsm_dev(super
, u
->dev_idx
);
9261 if (a
|| !dev
|| !check_name(super
, name
, 1)) {
9262 dprintf("failed to rename subarray-%d\n", target
);
9266 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
9267 super
->updates_pending
++;
9270 case update_add_remove_disk
: {
9271 /* we may be able to repair some arrays if disks are
9272 * being added, check the status of add_remove_disk
9273 * if discs has been added.
9275 if (add_remove_disk_update(super
)) {
9276 struct active_array
*a
;
9278 super
->updates_pending
++;
9279 for (a
= st
->arrays
; a
; a
= a
->next
)
9280 a
->check_degraded
= 1;
9284 case update_prealloc_badblocks_mem
:
9287 pr_err("error: unsuported process update type:(type: %d)\n", type
);
9291 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
);
9293 static int imsm_prepare_update(struct supertype
*st
,
9294 struct metadata_update
*update
)
9297 * Allocate space to hold new disk entries, raid-device entries or a new
9298 * mpb if necessary. The manager synchronously waits for updates to
9299 * complete in the monitor, so new mpb buffers allocated here can be
9300 * integrated by the monitor thread without worrying about live pointers
9301 * in the manager thread.
9303 enum imsm_update_type type
;
9304 struct intel_super
*super
= st
->sb
;
9305 unsigned int sector_size
= super
->sector_size
;
9306 struct imsm_super
*mpb
= super
->anchor
;
9310 if (update
->len
< (int)sizeof(type
))
9313 type
= *(enum imsm_update_type
*) update
->buf
;
9316 case update_general_migration_checkpoint
:
9317 if (update
->len
< (int)sizeof(struct imsm_update_general_migration_checkpoint
))
9319 dprintf("called for update_general_migration_checkpoint\n");
9321 case update_takeover
: {
9322 struct imsm_update_takeover
*u
= (void *)update
->buf
;
9323 if (update
->len
< (int)sizeof(*u
))
9325 if (u
->direction
== R0_TO_R10
) {
9326 void **tail
= (void **)&update
->space_list
;
9327 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subarray
);
9328 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
9329 int num_members
= map
->num_members
;
9332 /* allocate memory for added disks */
9333 for (i
= 0; i
< num_members
; i
++) {
9334 size
= sizeof(struct dl
);
9335 space
= xmalloc(size
);
9340 /* allocate memory for new device */
9341 size
= sizeof_imsm_dev(super
->devlist
->dev
, 0) +
9342 (num_members
* sizeof(__u32
));
9343 space
= xmalloc(size
);
9347 len
= disks_to_mpb_size(num_members
* 2);
9352 case update_reshape_container_disks
: {
9353 /* Every raid device in the container is about to
9354 * gain some more devices, and we will enter a
9356 * So each 'imsm_map' will be bigger, and the imsm_vol
9357 * will now hold 2 of them.
9358 * Thus we need new 'struct imsm_dev' allocations sized
9359 * as sizeof_imsm_dev but with more devices in both maps.
9361 struct imsm_update_reshape
*u
= (void *)update
->buf
;
9362 struct intel_dev
*dl
;
9363 void **space_tail
= (void**)&update
->space_list
;
9365 if (update
->len
< (int)sizeof(*u
))
9368 dprintf("for update_reshape\n");
9370 for (dl
= super
->devlist
; dl
; dl
= dl
->next
) {
9371 int size
= sizeof_imsm_dev(dl
->dev
, 1);
9373 if (u
->new_raid_disks
> u
->old_raid_disks
)
9374 size
+= sizeof(__u32
)*2*
9375 (u
->new_raid_disks
- u
->old_raid_disks
);
9382 len
= disks_to_mpb_size(u
->new_raid_disks
);
9383 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
9386 case update_reshape_migration
: {
9387 /* for migration level 0->5 we need to add disks
9388 * so the same as for container operation we will copy
9389 * device to the bigger location.
9390 * in memory prepared device and new disk area are prepared
9391 * for usage in process update
9393 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
9394 struct intel_dev
*id
;
9395 void **space_tail
= (void **)&update
->space_list
;
9398 int current_level
= -1;
9400 if (update
->len
< (int)sizeof(*u
))
9403 dprintf("for update_reshape\n");
9405 /* add space for bigger array in update
9407 for (id
= super
->devlist
; id
; id
= id
->next
) {
9408 if (id
->index
== (unsigned)u
->subdev
) {
9409 size
= sizeof_imsm_dev(id
->dev
, 1);
9410 if (u
->new_raid_disks
> u
->old_raid_disks
)
9411 size
+= sizeof(__u32
)*2*
9412 (u
->new_raid_disks
- u
->old_raid_disks
);
9420 if (update
->space_list
== NULL
)
9423 /* add space for disk in update
9425 size
= sizeof(struct dl
);
9431 /* add spare device to update
9433 for (id
= super
->devlist
; id
; id
= id
->next
)
9434 if (id
->index
== (unsigned)u
->subdev
) {
9435 struct imsm_dev
*dev
;
9436 struct imsm_map
*map
;
9438 dev
= get_imsm_dev(super
, u
->subdev
);
9439 map
= get_imsm_map(dev
, MAP_0
);
9440 current_level
= map
->raid_level
;
9443 if (u
->new_level
== 5 && u
->new_level
!= current_level
) {
9444 struct mdinfo
*spares
;
9446 spares
= get_spares_for_grow(st
);
9454 makedev(dev
->disk
.major
,
9456 dl
= get_disk_super(super
,
9459 dl
->index
= u
->old_raid_disks
;
9465 len
= disks_to_mpb_size(u
->new_raid_disks
);
9466 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
9469 case update_size_change
: {
9470 if (update
->len
< (int)sizeof(struct imsm_update_size_change
))
9474 case update_activate_spare
: {
9475 if (update
->len
< (int)sizeof(struct imsm_update_activate_spare
))
9479 case update_create_array
: {
9480 struct imsm_update_create_array
*u
= (void *) update
->buf
;
9481 struct intel_dev
*dv
;
9482 struct imsm_dev
*dev
= &u
->dev
;
9483 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
9485 struct disk_info
*inf
;
9489 if (update
->len
< (int)sizeof(*u
))
9492 inf
= get_disk_info(u
);
9493 len
= sizeof_imsm_dev(dev
, 1);
9494 /* allocate a new super->devlist entry */
9495 dv
= xmalloc(sizeof(*dv
));
9496 dv
->dev
= xmalloc(len
);
9499 /* count how many spares will be converted to members */
9500 for (i
= 0; i
< map
->num_members
; i
++) {
9501 dl
= serial_to_dl(inf
[i
].serial
, super
);
9503 /* hmm maybe it failed?, nothing we can do about
9508 if (count_memberships(dl
, super
) == 0)
9511 len
+= activate
* sizeof(struct imsm_disk
);
9514 case update_kill_array
: {
9515 if (update
->len
< (int)sizeof(struct imsm_update_kill_array
))
9519 case update_rename_array
: {
9520 if (update
->len
< (int)sizeof(struct imsm_update_rename_array
))
9524 case update_add_remove_disk
:
9525 /* no update->len needed */
9527 case update_prealloc_badblocks_mem
:
9528 super
->extra_space
+= sizeof(struct bbm_log
) -
9529 get_imsm_bbm_log_size(super
->bbm_log
);
9535 /* check if we need a larger metadata buffer */
9536 if (super
->next_buf
)
9537 buf_len
= super
->next_len
;
9539 buf_len
= super
->len
;
9541 if (__le32_to_cpu(mpb
->mpb_size
) + super
->extra_space
+ len
> buf_len
) {
9542 /* ok we need a larger buf than what is currently allocated
9543 * if this allocation fails process_update will notice that
9544 * ->next_len is set and ->next_buf is NULL
9546 buf_len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) +
9547 super
->extra_space
+ len
, sector_size
);
9548 if (super
->next_buf
)
9549 free(super
->next_buf
);
9551 super
->next_len
= buf_len
;
9552 if (posix_memalign(&super
->next_buf
, sector_size
, buf_len
) == 0)
9553 memset(super
->next_buf
, 0, buf_len
);
9555 super
->next_buf
= NULL
;
9560 /* must be called while manager is quiesced */
9561 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
)
9563 struct imsm_super
*mpb
= super
->anchor
;
9565 struct imsm_dev
*dev
;
9566 struct imsm_map
*map
;
9567 unsigned int i
, j
, num_members
;
9569 struct bbm_log
*log
= super
->bbm_log
;
9571 dprintf("deleting device[%d] from imsm_super\n", index
);
9573 /* shift all indexes down one */
9574 for (iter
= super
->disks
; iter
; iter
= iter
->next
)
9575 if (iter
->index
> (int)index
)
9577 for (iter
= super
->missing
; iter
; iter
= iter
->next
)
9578 if (iter
->index
> (int)index
)
9581 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
9582 dev
= get_imsm_dev(super
, i
);
9583 map
= get_imsm_map(dev
, MAP_0
);
9584 num_members
= map
->num_members
;
9585 for (j
= 0; j
< num_members
; j
++) {
9586 /* update ord entries being careful not to propagate
9587 * ord-flags to the first map
9589 ord
= get_imsm_ord_tbl_ent(dev
, j
, MAP_X
);
9591 if (ord_to_idx(ord
) <= index
)
9594 map
= get_imsm_map(dev
, MAP_0
);
9595 set_imsm_ord_tbl_ent(map
, j
, ord_to_idx(ord
- 1));
9596 map
= get_imsm_map(dev
, MAP_1
);
9598 set_imsm_ord_tbl_ent(map
, j
, ord
- 1);
9602 for (i
= 0; i
< log
->entry_count
; i
++) {
9603 struct bbm_log_entry
*entry
= &log
->marked_block_entries
[i
];
9605 if (entry
->disk_ordinal
<= index
)
9607 entry
->disk_ordinal
--;
9611 super
->updates_pending
++;
9613 struct dl
*dl
= *dlp
;
9615 *dlp
= (*dlp
)->next
;
9616 __free_imsm_disk(dl
);
9619 #endif /* MDASSEMBLE */
9621 static void close_targets(int *targets
, int new_disks
)
9628 for (i
= 0; i
< new_disks
; i
++) {
9629 if (targets
[i
] >= 0) {
9636 static int imsm_get_allowed_degradation(int level
, int raid_disks
,
9637 struct intel_super
*super
,
9638 struct imsm_dev
*dev
)
9644 struct imsm_map
*map
;
9647 ret_val
= raid_disks
/2;
9648 /* check map if all disks pairs not failed
9651 map
= get_imsm_map(dev
, MAP_0
);
9652 for (i
= 0; i
< ret_val
; i
++) {
9653 int degradation
= 0;
9654 if (get_imsm_disk(super
, i
) == NULL
)
9656 if (get_imsm_disk(super
, i
+ 1) == NULL
)
9658 if (degradation
== 2)
9661 map
= get_imsm_map(dev
, MAP_1
);
9662 /* if there is no second map
9663 * result can be returned
9667 /* check degradation in second map
9669 for (i
= 0; i
< ret_val
; i
++) {
9670 int degradation
= 0;
9671 if (get_imsm_disk(super
, i
) == NULL
)
9673 if (get_imsm_disk(super
, i
+ 1) == NULL
)
9675 if (degradation
== 2)
9689 /*******************************************************************************
9690 * Function: open_backup_targets
9691 * Description: Function opens file descriptors for all devices given in
9694 * info : general array info
9695 * raid_disks : number of disks
9696 * raid_fds : table of device's file descriptors
9697 * super : intel super for raid10 degradation check
9698 * dev : intel device for raid10 degradation check
9702 ******************************************************************************/
9703 int open_backup_targets(struct mdinfo
*info
, int raid_disks
, int *raid_fds
,
9704 struct intel_super
*super
, struct imsm_dev
*dev
)
9710 for (i
= 0; i
< raid_disks
; i
++)
9713 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
9716 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
)) {
9717 dprintf("disk is faulty!!\n");
9721 if (sd
->disk
.raid_disk
>= raid_disks
|| sd
->disk
.raid_disk
< 0)
9724 dn
= map_dev(sd
->disk
.major
,
9726 raid_fds
[sd
->disk
.raid_disk
] = dev_open(dn
, O_RDWR
);
9727 if (raid_fds
[sd
->disk
.raid_disk
] < 0) {
9728 pr_err("cannot open component\n");
9733 /* check if maximum array degradation level is not exceeded
9735 if ((raid_disks
- opened
) >
9736 imsm_get_allowed_degradation(info
->new_level
, raid_disks
,
9738 pr_err("Not enough disks can be opened.\n");
9739 close_targets(raid_fds
, raid_disks
);
9745 /*******************************************************************************
9746 * Function: validate_container_imsm
9747 * Description: This routine validates container after assemble,
9748 * eg. if devices in container are under the same controller.
9751 * info : linked list with info about devices used in array
9755 ******************************************************************************/
9756 int validate_container_imsm(struct mdinfo
*info
)
9758 if (check_env("IMSM_NO_PLATFORM"))
9761 struct sys_dev
*idev
;
9762 struct sys_dev
*hba
= NULL
;
9763 struct sys_dev
*intel_devices
= find_intel_devices();
9764 char *dev_path
= devt_to_devpath(makedev(info
->disk
.major
,
9767 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
9768 if (dev_path
&& strstr(dev_path
, idev
->path
)) {
9777 pr_err("WARNING - Cannot detect HBA for device %s!\n",
9778 devid2kname(makedev(info
->disk
.major
, info
->disk
.minor
)));
9782 const struct imsm_orom
*orom
= get_orom_by_device_id(hba
->dev_id
);
9785 for (dev
= info
->next
; dev
; dev
= dev
->next
) {
9786 dev_path
= devt_to_devpath(makedev(dev
->disk
.major
, dev
->disk
.minor
));
9788 struct sys_dev
*hba2
= NULL
;
9789 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
9790 if (dev_path
&& strstr(dev_path
, idev
->path
)) {
9798 const struct imsm_orom
*orom2
= hba2
== NULL
? NULL
:
9799 get_orom_by_device_id(hba2
->dev_id
);
9801 if (hba2
&& hba
->type
!= hba2
->type
) {
9802 pr_err("WARNING - HBAs of devices do not match %s != %s\n",
9803 get_sys_dev_type(hba
->type
), get_sys_dev_type(hba2
->type
));
9807 if (orom
!= orom2
) {
9808 pr_err("WARNING - IMSM container assembled with disks under different HBAs!\n"
9809 " This operation is not supported and can lead to data loss.\n");
9814 pr_err("WARNING - IMSM container assembled with disks under HBAs without IMSM platform support!\n"
9815 " This operation is not supported and can lead to data loss.\n");
9823 /*******************************************************************************
9824 * Function: imsm_record_badblock
9825 * Description: This routine stores new bad block record in BBM log
9828 * a : array containing a bad block
9829 * slot : disk number containing a bad block
9830 * sector : bad block sector
9831 * length : bad block sectors range
9835 ******************************************************************************/
9836 static int imsm_record_badblock(struct active_array
*a
, int slot
,
9837 unsigned long long sector
, int length
)
9839 struct intel_super
*super
= a
->container
->sb
;
9843 ord
= imsm_disk_slot_to_ord(a
, slot
);
9847 ret
= record_new_badblock(super
->bbm_log
, ord_to_idx(ord
), sector
,
9850 super
->updates_pending
++;
9854 /*******************************************************************************
9855 * Function: imsm_clear_badblock
9856 * Description: This routine clears bad block record from BBM log
9859 * a : array containing a bad block
9860 * slot : disk number containing a bad block
9861 * sector : bad block sector
9862 * length : bad block sectors range
9866 ******************************************************************************/
9867 static int imsm_clear_badblock(struct active_array
*a
, int slot
,
9868 unsigned long long sector
, int length
)
9870 struct intel_super
*super
= a
->container
->sb
;
9874 ord
= imsm_disk_slot_to_ord(a
, slot
);
9878 ret
= clear_badblock(super
->bbm_log
, ord_to_idx(ord
), sector
, length
);
9880 super
->updates_pending
++;
9884 /*******************************************************************************
9885 * Function: init_migr_record_imsm
9886 * Description: Function inits imsm migration record
9888 * super : imsm internal array info
9889 * dev : device under migration
9890 * info : general array info to find the smallest device
9893 ******************************************************************************/
9894 void init_migr_record_imsm(struct supertype
*st
, struct imsm_dev
*dev
,
9895 struct mdinfo
*info
)
9897 struct intel_super
*super
= st
->sb
;
9898 struct migr_record
*migr_rec
= super
->migr_rec
;
9900 unsigned long long dsize
, dev_sectors
;
9901 long long unsigned min_dev_sectors
= -1LLU;
9905 struct imsm_map
*map_dest
= get_imsm_map(dev
, MAP_0
);
9906 struct imsm_map
*map_src
= get_imsm_map(dev
, MAP_1
);
9907 unsigned long long num_migr_units
;
9908 unsigned long long array_blocks
;
9910 memset(migr_rec
, 0, sizeof(struct migr_record
));
9911 migr_rec
->family_num
= __cpu_to_le32(super
->anchor
->family_num
);
9913 /* only ascending reshape supported now */
9914 migr_rec
->ascending_migr
= __cpu_to_le32(1);
9916 migr_rec
->dest_depth_per_unit
= GEN_MIGR_AREA_SIZE
/
9917 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
9918 migr_rec
->dest_depth_per_unit
*=
9919 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
9920 new_data_disks
= imsm_num_data_members(dev
, MAP_0
);
9921 migr_rec
->blocks_per_unit
=
9922 __cpu_to_le32(migr_rec
->dest_depth_per_unit
* new_data_disks
);
9923 migr_rec
->dest_depth_per_unit
=
9924 __cpu_to_le32(migr_rec
->dest_depth_per_unit
);
9925 array_blocks
= info
->component_size
* new_data_disks
;
9927 array_blocks
/ __le32_to_cpu(migr_rec
->blocks_per_unit
);
9929 if (array_blocks
% __le32_to_cpu(migr_rec
->blocks_per_unit
))
9931 migr_rec
->num_migr_units
= __cpu_to_le32(num_migr_units
);
9933 migr_rec
->post_migr_vol_cap
= dev
->size_low
;
9934 migr_rec
->post_migr_vol_cap_hi
= dev
->size_high
;
9936 /* Find the smallest dev */
9937 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
9938 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
9939 fd
= dev_open(nm
, O_RDONLY
);
9942 get_dev_size(fd
, NULL
, &dsize
);
9943 dev_sectors
= dsize
/ 512;
9944 if (dev_sectors
< min_dev_sectors
)
9945 min_dev_sectors
= dev_sectors
;
9948 migr_rec
->ckpt_area_pba
= __cpu_to_le32(min_dev_sectors
-
9949 RAID_DISK_RESERVED_BLOCKS_IMSM_HI
);
9951 write_imsm_migr_rec(st
);
9956 /*******************************************************************************
9957 * Function: save_backup_imsm
9958 * Description: Function saves critical data stripes to Migration Copy Area
9959 * and updates the current migration unit status.
9960 * Use restore_stripes() to form a destination stripe,
9961 * and to write it to the Copy Area.
9963 * st : supertype information
9964 * dev : imsm device that backup is saved for
9965 * info : general array info
9966 * buf : input buffer
9967 * length : length of data to backup (blocks_per_unit)
9971 ******************************************************************************/
9972 int save_backup_imsm(struct supertype
*st
,
9973 struct imsm_dev
*dev
,
9974 struct mdinfo
*info
,
9979 struct intel_super
*super
= st
->sb
;
9980 unsigned long long *target_offsets
;
9983 struct imsm_map
*map_dest
= get_imsm_map(dev
, MAP_0
);
9984 int new_disks
= map_dest
->num_members
;
9985 int dest_layout
= 0;
9987 unsigned long long start
;
9988 int data_disks
= imsm_num_data_members(dev
, MAP_0
);
9990 targets
= xmalloc(new_disks
* sizeof(int));
9992 for (i
= 0; i
< new_disks
; i
++)
9995 target_offsets
= xcalloc(new_disks
, sizeof(unsigned long long));
9997 start
= info
->reshape_progress
* 512;
9998 for (i
= 0; i
< new_disks
; i
++) {
9999 target_offsets
[i
] = (unsigned long long)
10000 __le32_to_cpu(super
->migr_rec
->ckpt_area_pba
) * 512;
10001 /* move back copy area adderss, it will be moved forward
10002 * in restore_stripes() using start input variable
10004 target_offsets
[i
] -= start
/data_disks
;
10007 if (open_backup_targets(info
, new_disks
, targets
,
10011 dest_layout
= imsm_level_to_layout(map_dest
->raid_level
);
10012 dest_chunk
= __le16_to_cpu(map_dest
->blocks_per_strip
) * 512;
10014 if (restore_stripes(targets
, /* list of dest devices */
10015 target_offsets
, /* migration record offsets */
10018 map_dest
->raid_level
,
10020 -1, /* source backup file descriptor */
10021 0, /* input buf offset
10022 * always 0 buf is already offseted */
10026 pr_err("Error restoring stripes\n");
10034 close_targets(targets
, new_disks
);
10037 free(target_offsets
);
10042 /*******************************************************************************
10043 * Function: save_checkpoint_imsm
10044 * Description: Function called for current unit status update
10045 * in the migration record. It writes it to disk.
10047 * super : imsm internal array info
10048 * info : general array info
10052 * 2: failure, means no valid migration record
10053 * / no general migration in progress /
10054 ******************************************************************************/
10055 int save_checkpoint_imsm(struct supertype
*st
, struct mdinfo
*info
, int state
)
10057 struct intel_super
*super
= st
->sb
;
10058 unsigned long long blocks_per_unit
;
10059 unsigned long long curr_migr_unit
;
10061 if (load_imsm_migr_rec(super
, info
) != 0) {
10062 dprintf("imsm: ERROR: Cannot read migration record for checkpoint save.\n");
10066 blocks_per_unit
= __le32_to_cpu(super
->migr_rec
->blocks_per_unit
);
10067 if (blocks_per_unit
== 0) {
10068 dprintf("imsm: no migration in progress.\n");
10071 curr_migr_unit
= info
->reshape_progress
/ blocks_per_unit
;
10072 /* check if array is alligned to copy area
10073 * if it is not alligned, add one to current migration unit value
10074 * this can happend on array reshape finish only
10076 if (info
->reshape_progress
% blocks_per_unit
)
10079 super
->migr_rec
->curr_migr_unit
=
10080 __cpu_to_le32(curr_migr_unit
);
10081 super
->migr_rec
->rec_status
= __cpu_to_le32(state
);
10082 super
->migr_rec
->dest_1st_member_lba
=
10083 __cpu_to_le32(curr_migr_unit
*
10084 __le32_to_cpu(super
->migr_rec
->dest_depth_per_unit
));
10085 if (write_imsm_migr_rec(st
) < 0) {
10086 dprintf("imsm: Cannot write migration record outside backup area\n");
10093 /*******************************************************************************
10094 * Function: recover_backup_imsm
10095 * Description: Function recovers critical data from the Migration Copy Area
10096 * while assembling an array.
10098 * super : imsm internal array info
10099 * info : general array info
10101 * 0 : success (or there is no data to recover)
10103 ******************************************************************************/
10104 int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
)
10106 struct intel_super
*super
= st
->sb
;
10107 struct migr_record
*migr_rec
= super
->migr_rec
;
10108 struct imsm_map
*map_dest
;
10109 struct intel_dev
*id
= NULL
;
10110 unsigned long long read_offset
;
10111 unsigned long long write_offset
;
10113 int *targets
= NULL
;
10114 int new_disks
, i
, err
;
10117 unsigned int sector_size
= super
->sector_size
;
10118 unsigned long curr_migr_unit
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
10119 unsigned long num_migr_units
= __le32_to_cpu(migr_rec
->num_migr_units
);
10121 int skipped_disks
= 0;
10123 err
= sysfs_get_str(info
, NULL
, "array_state", (char *)buffer
, 20);
10127 /* recover data only during assemblation */
10128 if (strncmp(buffer
, "inactive", 8) != 0)
10130 /* no data to recover */
10131 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
10133 if (curr_migr_unit
>= num_migr_units
)
10136 /* find device during reshape */
10137 for (id
= super
->devlist
; id
; id
= id
->next
)
10138 if (is_gen_migration(id
->dev
))
10143 map_dest
= get_imsm_map(id
->dev
, MAP_0
);
10144 new_disks
= map_dest
->num_members
;
10146 read_offset
= (unsigned long long)
10147 __le32_to_cpu(migr_rec
->ckpt_area_pba
) * 512;
10149 write_offset
= ((unsigned long long)
10150 __le32_to_cpu(migr_rec
->dest_1st_member_lba
) +
10151 pba_of_lba0(map_dest
)) * 512;
10153 unit_len
= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
10154 if (posix_memalign((void **)&buf
, sector_size
, unit_len
) != 0)
10156 targets
= xcalloc(new_disks
, sizeof(int));
10158 if (open_backup_targets(info
, new_disks
, targets
, super
, id
->dev
)) {
10159 pr_err("Cannot open some devices belonging to array.\n");
10163 for (i
= 0; i
< new_disks
; i
++) {
10164 if (targets
[i
] < 0) {
10168 if (lseek64(targets
[i
], read_offset
, SEEK_SET
) < 0) {
10169 pr_err("Cannot seek to block: %s\n",
10174 if ((unsigned)read(targets
[i
], buf
, unit_len
) != unit_len
) {
10175 pr_err("Cannot read copy area block: %s\n",
10180 if (lseek64(targets
[i
], write_offset
, SEEK_SET
) < 0) {
10181 pr_err("Cannot seek to block: %s\n",
10186 if ((unsigned)write(targets
[i
], buf
, unit_len
) != unit_len
) {
10187 pr_err("Cannot restore block: %s\n",
10194 if (skipped_disks
> imsm_get_allowed_degradation(info
->new_level
,
10198 pr_err("Cannot restore data from backup. Too many failed disks\n");
10202 if (save_checkpoint_imsm(st
, info
, UNIT_SRC_NORMAL
)) {
10203 /* ignore error == 2, this can mean end of reshape here
10205 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL) during restart\n");
10211 for (i
= 0; i
< new_disks
; i
++)
10220 static char disk_by_path
[] = "/dev/disk/by-path/";
10222 static const char *imsm_get_disk_controller_domain(const char *path
)
10224 char disk_path
[PATH_MAX
];
10228 strcpy(disk_path
, disk_by_path
);
10229 strncat(disk_path
, path
, PATH_MAX
- strlen(disk_path
) - 1);
10230 if (stat(disk_path
, &st
) == 0) {
10231 struct sys_dev
* hba
;
10234 path
= devt_to_devpath(st
.st_rdev
);
10237 hba
= find_disk_attached_hba(-1, path
);
10238 if (hba
&& hba
->type
== SYS_DEV_SAS
)
10240 else if (hba
&& hba
->type
== SYS_DEV_SATA
)
10244 dprintf("path: %s hba: %s attached: %s\n",
10245 path
, (hba
) ? hba
->path
: "NULL", drv
);
10251 static char *imsm_find_array_devnm_by_subdev(int subdev
, char *container
)
10253 static char devnm
[32];
10254 char subdev_name
[20];
10255 struct mdstat_ent
*mdstat
;
10257 sprintf(subdev_name
, "%d", subdev
);
10258 mdstat
= mdstat_by_subdev(subdev_name
, container
);
10262 strcpy(devnm
, mdstat
->devnm
);
10263 free_mdstat(mdstat
);
10267 static int imsm_reshape_is_allowed_on_container(struct supertype
*st
,
10268 struct geo_params
*geo
,
10269 int *old_raid_disks
,
10272 /* currently we only support increasing the number of devices
10273 * for a container. This increases the number of device for each
10274 * member array. They must all be RAID0 or RAID5.
10277 struct mdinfo
*info
, *member
;
10278 int devices_that_can_grow
= 0;
10280 dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): st->devnm = (%s)\n", st
->devnm
);
10282 if (geo
->size
> 0 ||
10283 geo
->level
!= UnSet
||
10284 geo
->layout
!= UnSet
||
10285 geo
->chunksize
!= 0 ||
10286 geo
->raid_disks
== UnSet
) {
10287 dprintf("imsm: Container operation is allowed for raid disks number change only.\n");
10291 if (direction
== ROLLBACK_METADATA_CHANGES
) {
10292 dprintf("imsm: Metadata changes rollback is not supported for container operation.\n");
10296 info
= container_content_imsm(st
, NULL
);
10297 for (member
= info
; member
; member
= member
->next
) {
10300 dprintf("imsm: checking device_num: %i\n",
10301 member
->container_member
);
10303 if (geo
->raid_disks
<= member
->array
.raid_disks
) {
10304 /* we work on container for Online Capacity Expansion
10305 * only so raid_disks has to grow
10307 dprintf("imsm: for container operation raid disks increase is required\n");
10311 if (info
->array
.level
!= 0 && info
->array
.level
!= 5) {
10312 /* we cannot use this container with other raid level
10314 dprintf("imsm: for container operation wrong raid level (%i) detected\n",
10315 info
->array
.level
);
10318 /* check for platform support
10319 * for this raid level configuration
10321 struct intel_super
*super
= st
->sb
;
10322 if (!is_raid_level_supported(super
->orom
,
10323 member
->array
.level
,
10324 geo
->raid_disks
)) {
10325 dprintf("platform does not support raid%d with %d disk%s\n",
10328 geo
->raid_disks
> 1 ? "s" : "");
10331 /* check if component size is aligned to chunk size
10333 if (info
->component_size
%
10334 (info
->array
.chunk_size
/512)) {
10335 dprintf("Component size is not aligned to chunk size\n");
10340 if (*old_raid_disks
&&
10341 info
->array
.raid_disks
!= *old_raid_disks
)
10343 *old_raid_disks
= info
->array
.raid_disks
;
10345 /* All raid5 and raid0 volumes in container
10346 * have to be ready for Online Capacity Expansion
10347 * so they need to be assembled. We have already
10348 * checked that no recovery etc is happening.
10350 result
= imsm_find_array_devnm_by_subdev(member
->container_member
,
10351 st
->container_devnm
);
10352 if (result
== NULL
) {
10353 dprintf("imsm: cannot find array\n");
10356 devices_that_can_grow
++;
10359 if (!member
&& devices_that_can_grow
)
10363 dprintf("Container operation allowed\n");
10365 dprintf("Error: %i\n", ret_val
);
10370 /* Function: get_spares_for_grow
10371 * Description: Allocates memory and creates list of spare devices
10372 * avaliable in container. Checks if spare drive size is acceptable.
10373 * Parameters: Pointer to the supertype structure
10374 * Returns: Pointer to the list of spare devices (mdinfo structure) on success,
10377 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
)
10379 unsigned long long min_size
= min_acceptable_spare_size_imsm(st
);
10380 return container_choose_spares(st
, min_size
, NULL
, NULL
, NULL
, 0);
10383 /******************************************************************************
10384 * function: imsm_create_metadata_update_for_reshape
10385 * Function creates update for whole IMSM container.
10387 ******************************************************************************/
10388 static int imsm_create_metadata_update_for_reshape(
10389 struct supertype
*st
,
10390 struct geo_params
*geo
,
10391 int old_raid_disks
,
10392 struct imsm_update_reshape
**updatep
)
10394 struct intel_super
*super
= st
->sb
;
10395 struct imsm_super
*mpb
= super
->anchor
;
10396 int update_memory_size
;
10397 struct imsm_update_reshape
*u
;
10398 struct mdinfo
*spares
;
10401 struct mdinfo
*dev
;
10403 dprintf("(enter) raid_disks = %i\n", geo
->raid_disks
);
10405 delta_disks
= geo
->raid_disks
- old_raid_disks
;
10407 /* size of all update data without anchor */
10408 update_memory_size
= sizeof(struct imsm_update_reshape
);
10410 /* now add space for spare disks that we need to add. */
10411 update_memory_size
+= sizeof(u
->new_disks
[0]) * (delta_disks
- 1);
10413 u
= xcalloc(1, update_memory_size
);
10414 u
->type
= update_reshape_container_disks
;
10415 u
->old_raid_disks
= old_raid_disks
;
10416 u
->new_raid_disks
= geo
->raid_disks
;
10418 /* now get spare disks list
10420 spares
= get_spares_for_grow(st
);
10423 || delta_disks
> spares
->array
.spare_disks
) {
10424 pr_err("imsm: ERROR: Cannot get spare devices for %s.\n", geo
->dev_name
);
10429 /* we have got spares
10430 * update disk list in imsm_disk list table in anchor
10432 dprintf("imsm: %i spares are available.\n\n",
10433 spares
->array
.spare_disks
);
10435 dev
= spares
->devs
;
10436 for (i
= 0; i
< delta_disks
; i
++) {
10441 u
->new_disks
[i
] = makedev(dev
->disk
.major
,
10443 dl
= get_disk_super(super
, dev
->disk
.major
, dev
->disk
.minor
);
10444 dl
->index
= mpb
->num_disks
;
10452 sysfs_free(spares
);
10454 dprintf("imsm: reshape update preparation :");
10455 if (i
== delta_disks
) {
10456 dprintf_cont(" OK\n");
10458 return update_memory_size
;
10461 dprintf_cont(" Error\n");
10466 /******************************************************************************
10467 * function: imsm_create_metadata_update_for_size_change()
10468 * Creates update for IMSM array for array size change.
10470 ******************************************************************************/
10471 static int imsm_create_metadata_update_for_size_change(
10472 struct supertype
*st
,
10473 struct geo_params
*geo
,
10474 struct imsm_update_size_change
**updatep
)
10476 struct intel_super
*super
= st
->sb
;
10477 int update_memory_size
;
10478 struct imsm_update_size_change
*u
;
10480 dprintf("(enter) New size = %llu\n", geo
->size
);
10482 /* size of all update data without anchor */
10483 update_memory_size
= sizeof(struct imsm_update_size_change
);
10485 u
= xcalloc(1, update_memory_size
);
10486 u
->type
= update_size_change
;
10487 u
->subdev
= super
->current_vol
;
10488 u
->new_size
= geo
->size
;
10490 dprintf("imsm: reshape update preparation : OK\n");
10493 return update_memory_size
;
10496 /******************************************************************************
10497 * function: imsm_create_metadata_update_for_migration()
10498 * Creates update for IMSM array.
10500 ******************************************************************************/
10501 static int imsm_create_metadata_update_for_migration(
10502 struct supertype
*st
,
10503 struct geo_params
*geo
,
10504 struct imsm_update_reshape_migration
**updatep
)
10506 struct intel_super
*super
= st
->sb
;
10507 int update_memory_size
;
10508 struct imsm_update_reshape_migration
*u
;
10509 struct imsm_dev
*dev
;
10510 int previous_level
= -1;
10512 dprintf("(enter) New Level = %i\n", geo
->level
);
10514 /* size of all update data without anchor */
10515 update_memory_size
= sizeof(struct imsm_update_reshape_migration
);
10517 u
= xcalloc(1, update_memory_size
);
10518 u
->type
= update_reshape_migration
;
10519 u
->subdev
= super
->current_vol
;
10520 u
->new_level
= geo
->level
;
10521 u
->new_layout
= geo
->layout
;
10522 u
->new_raid_disks
= u
->old_raid_disks
= geo
->raid_disks
;
10523 u
->new_disks
[0] = -1;
10524 u
->new_chunksize
= -1;
10526 dev
= get_imsm_dev(super
, u
->subdev
);
10528 struct imsm_map
*map
;
10530 map
= get_imsm_map(dev
, MAP_0
);
10532 int current_chunk_size
=
10533 __le16_to_cpu(map
->blocks_per_strip
) / 2;
10535 if (geo
->chunksize
!= current_chunk_size
) {
10536 u
->new_chunksize
= geo
->chunksize
/ 1024;
10537 dprintf("imsm: chunk size change from %i to %i\n",
10538 current_chunk_size
, u
->new_chunksize
);
10540 previous_level
= map
->raid_level
;
10543 if (geo
->level
== 5 && previous_level
== 0) {
10544 struct mdinfo
*spares
= NULL
;
10546 u
->new_raid_disks
++;
10547 spares
= get_spares_for_grow(st
);
10548 if (spares
== NULL
|| spares
->array
.spare_disks
< 1) {
10550 sysfs_free(spares
);
10551 update_memory_size
= 0;
10552 dprintf("error: cannot get spare device for requested migration");
10555 sysfs_free(spares
);
10557 dprintf("imsm: reshape update preparation : OK\n");
10560 return update_memory_size
;
10563 static void imsm_update_metadata_locally(struct supertype
*st
,
10564 void *buf
, int len
)
10566 struct metadata_update mu
;
10571 mu
.space_list
= NULL
;
10573 if (imsm_prepare_update(st
, &mu
))
10574 imsm_process_update(st
, &mu
);
10576 while (mu
.space_list
) {
10577 void **space
= mu
.space_list
;
10578 mu
.space_list
= *space
;
10583 /***************************************************************************
10584 * Function: imsm_analyze_change
10585 * Description: Function analyze change for single volume
10586 * and validate if transition is supported
10587 * Parameters: Geometry parameters, supertype structure,
10588 * metadata change direction (apply/rollback)
10589 * Returns: Operation type code on success, -1 if fail
10590 ****************************************************************************/
10591 enum imsm_reshape_type
imsm_analyze_change(struct supertype
*st
,
10592 struct geo_params
*geo
,
10595 struct mdinfo info
;
10597 int check_devs
= 0;
10599 /* number of added/removed disks in operation result */
10600 int devNumChange
= 0;
10601 /* imsm compatible layout value for array geometry verification */
10602 int imsm_layout
= -1;
10604 struct imsm_dev
*dev
;
10605 struct intel_super
*super
;
10606 unsigned long long current_size
;
10607 unsigned long long free_size
;
10608 unsigned long long max_size
;
10611 getinfo_super_imsm_volume(st
, &info
, NULL
);
10612 if (geo
->level
!= info
.array
.level
&& geo
->level
>= 0 &&
10613 geo
->level
!= UnSet
) {
10614 switch (info
.array
.level
) {
10616 if (geo
->level
== 5) {
10617 change
= CH_MIGRATION
;
10618 if (geo
->layout
!= ALGORITHM_LEFT_ASYMMETRIC
) {
10619 pr_err("Error. Requested Layout not supported (left-asymmetric layout is supported only)!\n");
10621 goto analyse_change_exit
;
10623 imsm_layout
= geo
->layout
;
10625 devNumChange
= 1; /* parity disk added */
10626 } else if (geo
->level
== 10) {
10627 change
= CH_TAKEOVER
;
10629 devNumChange
= 2; /* two mirrors added */
10630 imsm_layout
= 0x102; /* imsm supported layout */
10635 if (geo
->level
== 0) {
10636 change
= CH_TAKEOVER
;
10638 devNumChange
= -(geo
->raid_disks
/2);
10639 imsm_layout
= 0; /* imsm raid0 layout */
10643 if (change
== -1) {
10644 pr_err("Error. Level Migration from %d to %d not supported!\n",
10645 info
.array
.level
, geo
->level
);
10646 goto analyse_change_exit
;
10649 geo
->level
= info
.array
.level
;
10651 if (geo
->layout
!= info
.array
.layout
&&
10652 (geo
->layout
!= UnSet
&& geo
->layout
!= -1)) {
10653 change
= CH_MIGRATION
;
10654 if (info
.array
.layout
== 0 && info
.array
.level
== 5 &&
10655 geo
->layout
== 5) {
10656 /* reshape 5 -> 4 */
10657 } else if (info
.array
.layout
== 5 && info
.array
.level
== 5 &&
10658 geo
->layout
== 0) {
10659 /* reshape 4 -> 5 */
10663 pr_err("Error. Layout Migration from %d to %d not supported!\n",
10664 info
.array
.layout
, geo
->layout
);
10666 goto analyse_change_exit
;
10669 geo
->layout
= info
.array
.layout
;
10670 if (imsm_layout
== -1)
10671 imsm_layout
= info
.array
.layout
;
10674 if (geo
->chunksize
> 0 && geo
->chunksize
!= UnSet
&&
10675 geo
->chunksize
!= info
.array
.chunk_size
) {
10676 if (info
.array
.level
== 10) {
10677 pr_err("Error. Chunk size change for RAID 10 is not supported.\n");
10679 goto analyse_change_exit
;
10681 change
= CH_MIGRATION
;
10683 geo
->chunksize
= info
.array
.chunk_size
;
10686 chunk
= geo
->chunksize
/ 1024;
10689 dev
= get_imsm_dev(super
, super
->current_vol
);
10690 data_disks
= imsm_num_data_members(dev
, MAP_0
);
10691 /* compute current size per disk member
10693 current_size
= info
.custom_array_size
/ data_disks
;
10695 if (geo
->size
> 0 && geo
->size
!= MAX_SIZE
) {
10696 /* align component size
10698 geo
->size
= imsm_component_size_aligment_check(
10699 get_imsm_raid_level(dev
->vol
.map
),
10700 chunk
* 1024, super
->sector_size
,
10702 if (geo
->size
== 0) {
10703 pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is 0).\n",
10705 goto analyse_change_exit
;
10709 if (current_size
!= geo
->size
&& geo
->size
> 0) {
10710 if (change
!= -1) {
10711 pr_err("Error. Size change should be the only one at a time.\n");
10713 goto analyse_change_exit
;
10715 if ((super
->current_vol
+ 1) != super
->anchor
->num_raid_devs
) {
10716 pr_err("Error. The last volume in container can be expanded only (%i/%s).\n",
10717 super
->current_vol
, st
->devnm
);
10718 goto analyse_change_exit
;
10720 /* check the maximum available size
10722 rv
= imsm_get_free_size(st
, dev
->vol
.map
->num_members
,
10723 0, chunk
, &free_size
);
10725 /* Cannot find maximum available space
10729 max_size
= free_size
+ current_size
;
10730 /* align component size
10732 max_size
= imsm_component_size_aligment_check(
10733 get_imsm_raid_level(dev
->vol
.map
),
10734 chunk
* 1024, super
->sector_size
,
10737 if (geo
->size
== MAX_SIZE
) {
10738 /* requested size change to the maximum available size
10740 if (max_size
== 0) {
10741 pr_err("Error. Cannot find maximum available space.\n");
10743 goto analyse_change_exit
;
10745 geo
->size
= max_size
;
10748 if (direction
== ROLLBACK_METADATA_CHANGES
) {
10749 /* accept size for rollback only
10752 /* round size due to metadata compatibility
10754 geo
->size
= (geo
->size
>> SECT_PER_MB_SHIFT
)
10755 << SECT_PER_MB_SHIFT
;
10756 dprintf("Prepare update for size change to %llu\n",
10758 if (current_size
>= geo
->size
) {
10759 pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is %llu).\n",
10760 current_size
, geo
->size
);
10761 goto analyse_change_exit
;
10763 if (max_size
&& geo
->size
> max_size
) {
10764 pr_err("Error. Requested size is larger than maximum available size (maximum available size is %llu, requested size /rounded/ is %llu).\n",
10765 max_size
, geo
->size
);
10766 goto analyse_change_exit
;
10769 geo
->size
*= data_disks
;
10770 geo
->raid_disks
= dev
->vol
.map
->num_members
;
10771 change
= CH_ARRAY_SIZE
;
10773 if (!validate_geometry_imsm(st
,
10776 geo
->raid_disks
+ devNumChange
,
10778 geo
->size
, INVALID_SECTORS
,
10783 struct intel_super
*super
= st
->sb
;
10784 struct imsm_super
*mpb
= super
->anchor
;
10786 if (mpb
->num_raid_devs
> 1) {
10787 pr_err("Error. Cannot perform operation on %s- for this operation it MUST be single array in container\n",
10793 analyse_change_exit
:
10794 if (direction
== ROLLBACK_METADATA_CHANGES
&&
10795 (change
== CH_MIGRATION
|| change
== CH_TAKEOVER
)) {
10796 dprintf("imsm: Metadata changes rollback is not supported for migration and takeover operations.\n");
10802 int imsm_takeover(struct supertype
*st
, struct geo_params
*geo
)
10804 struct intel_super
*super
= st
->sb
;
10805 struct imsm_update_takeover
*u
;
10807 u
= xmalloc(sizeof(struct imsm_update_takeover
));
10809 u
->type
= update_takeover
;
10810 u
->subarray
= super
->current_vol
;
10812 /* 10->0 transition */
10813 if (geo
->level
== 0)
10814 u
->direction
= R10_TO_R0
;
10816 /* 0->10 transition */
10817 if (geo
->level
== 10)
10818 u
->direction
= R0_TO_R10
;
10820 /* update metadata locally */
10821 imsm_update_metadata_locally(st
, u
,
10822 sizeof(struct imsm_update_takeover
));
10823 /* and possibly remotely */
10824 if (st
->update_tail
)
10825 append_metadata_update(st
, u
,
10826 sizeof(struct imsm_update_takeover
));
10833 static int imsm_reshape_super(struct supertype
*st
, unsigned long long size
,
10835 int layout
, int chunksize
, int raid_disks
,
10836 int delta_disks
, char *backup
, char *dev
,
10837 int direction
, int verbose
)
10840 struct geo_params geo
;
10842 dprintf("(enter)\n");
10844 memset(&geo
, 0, sizeof(struct geo_params
));
10846 geo
.dev_name
= dev
;
10847 strcpy(geo
.devnm
, st
->devnm
);
10850 geo
.layout
= layout
;
10851 geo
.chunksize
= chunksize
;
10852 geo
.raid_disks
= raid_disks
;
10853 if (delta_disks
!= UnSet
)
10854 geo
.raid_disks
+= delta_disks
;
10856 dprintf("for level : %i\n", geo
.level
);
10857 dprintf("for raid_disks : %i\n", geo
.raid_disks
);
10859 if (experimental() == 0)
10862 if (strcmp(st
->container_devnm
, st
->devnm
) == 0) {
10863 /* On container level we can only increase number of devices. */
10864 dprintf("imsm: info: Container operation\n");
10865 int old_raid_disks
= 0;
10867 if (imsm_reshape_is_allowed_on_container(
10868 st
, &geo
, &old_raid_disks
, direction
)) {
10869 struct imsm_update_reshape
*u
= NULL
;
10872 len
= imsm_create_metadata_update_for_reshape(
10873 st
, &geo
, old_raid_disks
, &u
);
10876 dprintf("imsm: Cannot prepare update\n");
10877 goto exit_imsm_reshape_super
;
10881 /* update metadata locally */
10882 imsm_update_metadata_locally(st
, u
, len
);
10883 /* and possibly remotely */
10884 if (st
->update_tail
)
10885 append_metadata_update(st
, u
, len
);
10890 pr_err("(imsm) Operation is not allowed on this container\n");
10893 /* On volume level we support following operations
10894 * - takeover: raid10 -> raid0; raid0 -> raid10
10895 * - chunk size migration
10896 * - migration: raid5 -> raid0; raid0 -> raid5
10898 struct intel_super
*super
= st
->sb
;
10899 struct intel_dev
*dev
= super
->devlist
;
10901 dprintf("imsm: info: Volume operation\n");
10902 /* find requested device */
10905 imsm_find_array_devnm_by_subdev(
10906 dev
->index
, st
->container_devnm
);
10907 if (devnm
&& strcmp(devnm
, geo
.devnm
) == 0)
10912 pr_err("Cannot find %s (%s) subarray\n",
10913 geo
.dev_name
, geo
.devnm
);
10914 goto exit_imsm_reshape_super
;
10916 super
->current_vol
= dev
->index
;
10917 change
= imsm_analyze_change(st
, &geo
, direction
);
10920 ret_val
= imsm_takeover(st
, &geo
);
10922 case CH_MIGRATION
: {
10923 struct imsm_update_reshape_migration
*u
= NULL
;
10925 imsm_create_metadata_update_for_migration(
10928 dprintf("imsm: Cannot prepare update\n");
10932 /* update metadata locally */
10933 imsm_update_metadata_locally(st
, u
, len
);
10934 /* and possibly remotely */
10935 if (st
->update_tail
)
10936 append_metadata_update(st
, u
, len
);
10941 case CH_ARRAY_SIZE
: {
10942 struct imsm_update_size_change
*u
= NULL
;
10944 imsm_create_metadata_update_for_size_change(
10947 dprintf("imsm: Cannot prepare update\n");
10951 /* update metadata locally */
10952 imsm_update_metadata_locally(st
, u
, len
);
10953 /* and possibly remotely */
10954 if (st
->update_tail
)
10955 append_metadata_update(st
, u
, len
);
10965 exit_imsm_reshape_super
:
10966 dprintf("imsm: reshape_super Exit code = %i\n", ret_val
);
10970 #define COMPLETED_OK 0
10971 #define COMPLETED_NONE 1
10972 #define COMPLETED_DELAYED 2
10974 static int read_completed(int fd
, unsigned long long *val
)
10979 ret
= sysfs_fd_get_str(fd
, buf
, 50);
10983 ret
= COMPLETED_OK
;
10984 if (strncmp(buf
, "none", 4) == 0) {
10985 ret
= COMPLETED_NONE
;
10986 } else if (strncmp(buf
, "delayed", 7) == 0) {
10987 ret
= COMPLETED_DELAYED
;
10990 *val
= strtoull(buf
, &ep
, 0);
10991 if (ep
== buf
|| (*ep
!= 0 && *ep
!= '\n' && *ep
!= ' '))
10997 /*******************************************************************************
10998 * Function: wait_for_reshape_imsm
10999 * Description: Function writes new sync_max value and waits until
11000 * reshape process reach new position
11002 * sra : general array info
11003 * ndata : number of disks in new array's layout
11006 * 1 : there is no reshape in progress,
11008 ******************************************************************************/
11009 int wait_for_reshape_imsm(struct mdinfo
*sra
, int ndata
)
11011 int fd
= sysfs_get_fd(sra
, NULL
, "sync_completed");
11013 unsigned long long completed
;
11014 /* to_complete : new sync_max position */
11015 unsigned long long to_complete
= sra
->reshape_progress
;
11016 unsigned long long position_to_set
= to_complete
/ ndata
;
11019 dprintf("cannot open reshape_position\n");
11024 if (sysfs_fd_get_ll(fd
, &completed
) < 0) {
11026 dprintf("cannot read reshape_position (no reshape in progres)\n");
11035 if (completed
> position_to_set
) {
11036 dprintf("wrong next position to set %llu (%llu)\n",
11037 to_complete
, position_to_set
);
11041 dprintf("Position set: %llu\n", position_to_set
);
11042 if (sysfs_set_num(sra
, NULL
, "sync_max",
11043 position_to_set
) != 0) {
11044 dprintf("cannot set reshape position to %llu\n",
11053 int timeout
= 3000;
11055 sysfs_wait(fd
, &timeout
);
11056 if (sysfs_get_str(sra
, NULL
, "sync_action",
11058 strncmp(action
, "reshape", 7) != 0) {
11059 if (strncmp(action
, "idle", 4) == 0)
11065 rc
= read_completed(fd
, &completed
);
11067 dprintf("cannot read reshape_position (in loop)\n");
11070 } else if (rc
== COMPLETED_NONE
)
11072 } while (completed
< position_to_set
);
11078 /*******************************************************************************
11079 * Function: check_degradation_change
11080 * Description: Check that array hasn't become failed.
11082 * info : for sysfs access
11083 * sources : source disks descriptors
11084 * degraded: previous degradation level
11086 * degradation level
11087 ******************************************************************************/
11088 int check_degradation_change(struct mdinfo
*info
,
11092 unsigned long long new_degraded
;
11095 rv
= sysfs_get_ll(info
, NULL
, "degraded", &new_degraded
);
11096 if (rv
== -1 || (new_degraded
!= (unsigned long long)degraded
)) {
11097 /* check each device to ensure it is still working */
11100 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
11101 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
))
11103 if (sd
->disk
.state
& (1<<MD_DISK_SYNC
)) {
11106 if (sysfs_get_str(info
,
11107 sd
, "state", sbuf
, sizeof(sbuf
)) < 0 ||
11108 strstr(sbuf
, "faulty") ||
11109 strstr(sbuf
, "in_sync") == NULL
) {
11110 /* this device is dead */
11111 sd
->disk
.state
= (1<<MD_DISK_FAULTY
);
11112 if (sd
->disk
.raid_disk
>= 0 &&
11113 sources
[sd
->disk
.raid_disk
] >= 0) {
11115 sd
->disk
.raid_disk
]);
11116 sources
[sd
->disk
.raid_disk
] =
11125 return new_degraded
;
11128 /*******************************************************************************
11129 * Function: imsm_manage_reshape
11130 * Description: Function finds array under reshape and it manages reshape
11131 * process. It creates stripes backups (if required) and sets
11134 * afd : Backup handle (nattive) - not used
11135 * sra : general array info
11136 * reshape : reshape parameters - not used
11137 * st : supertype structure
11138 * blocks : size of critical section [blocks]
11139 * fds : table of source device descriptor
11140 * offsets : start of array (offest per devices)
11142 * destfd : table of destination device descriptor
11143 * destoffsets : table of destination offsets (per device)
11145 * 1 : success, reshape is done
11147 ******************************************************************************/
11148 static int imsm_manage_reshape(
11149 int afd
, struct mdinfo
*sra
, struct reshape
*reshape
,
11150 struct supertype
*st
, unsigned long backup_blocks
,
11151 int *fds
, unsigned long long *offsets
,
11152 int dests
, int *destfd
, unsigned long long *destoffsets
)
11155 struct intel_super
*super
= st
->sb
;
11156 struct intel_dev
*dv
;
11157 unsigned int sector_size
= super
->sector_size
;
11158 struct imsm_dev
*dev
= NULL
;
11159 struct imsm_map
*map_src
;
11160 int migr_vol_qan
= 0;
11161 int ndata
, odata
; /* [bytes] */
11162 int chunk
; /* [bytes] */
11163 struct migr_record
*migr_rec
;
11165 unsigned int buf_size
; /* [bytes] */
11166 unsigned long long max_position
; /* array size [bytes] */
11167 unsigned long long next_step
; /* [blocks]/[bytes] */
11168 unsigned long long old_data_stripe_length
;
11169 unsigned long long start_src
; /* [bytes] */
11170 unsigned long long start
; /* [bytes] */
11171 unsigned long long start_buf_shift
; /* [bytes] */
11173 int source_layout
= 0;
11178 if (!fds
|| !offsets
)
11181 /* Find volume during the reshape */
11182 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
11183 if (dv
->dev
->vol
.migr_type
== MIGR_GEN_MIGR
11184 && dv
->dev
->vol
.migr_state
== 1) {
11189 /* Only one volume can migrate at the same time */
11190 if (migr_vol_qan
!= 1) {
11191 pr_err("%s", migr_vol_qan
?
11192 "Number of migrating volumes greater than 1\n" :
11193 "There is no volume during migrationg\n");
11197 map_src
= get_imsm_map(dev
, MAP_1
);
11198 if (map_src
== NULL
)
11201 ndata
= imsm_num_data_members(dev
, MAP_0
);
11202 odata
= imsm_num_data_members(dev
, MAP_1
);
11204 chunk
= __le16_to_cpu(map_src
->blocks_per_strip
) * 512;
11205 old_data_stripe_length
= odata
* chunk
;
11207 migr_rec
= super
->migr_rec
;
11209 /* initialize migration record for start condition */
11210 if (sra
->reshape_progress
== 0)
11211 init_migr_record_imsm(st
, dev
, sra
);
11213 if (__le32_to_cpu(migr_rec
->rec_status
) != UNIT_SRC_NORMAL
) {
11214 dprintf("imsm: cannot restart migration when data are present in copy area.\n");
11217 /* Save checkpoint to update migration record for current
11218 * reshape position (in md). It can be farther than current
11219 * reshape position in metadata.
11221 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
11222 /* ignore error == 2, this can mean end of reshape here
11224 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL, initial save)\n");
11229 /* size for data */
11230 buf_size
= __le32_to_cpu(migr_rec
->blocks_per_unit
) * 512;
11231 /* extend buffer size for parity disk */
11232 buf_size
+= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
11233 /* add space for stripe aligment */
11234 buf_size
+= old_data_stripe_length
;
11235 if (posix_memalign((void **)&buf
, MAX_SECTOR_SIZE
, buf_size
)) {
11236 dprintf("imsm: Cannot allocate checkpoint buffer\n");
11240 max_position
= sra
->component_size
* ndata
;
11241 source_layout
= imsm_level_to_layout(map_src
->raid_level
);
11243 while (__le32_to_cpu(migr_rec
->curr_migr_unit
) <
11244 __le32_to_cpu(migr_rec
->num_migr_units
)) {
11245 /* current reshape position [blocks] */
11246 unsigned long long current_position
=
11247 __le32_to_cpu(migr_rec
->blocks_per_unit
)
11248 * __le32_to_cpu(migr_rec
->curr_migr_unit
);
11249 unsigned long long border
;
11251 /* Check that array hasn't become failed.
11253 degraded
= check_degradation_change(sra
, fds
, degraded
);
11254 if (degraded
> 1) {
11255 dprintf("imsm: Abort reshape due to degradation level (%i)\n", degraded
);
11259 next_step
= __le32_to_cpu(migr_rec
->blocks_per_unit
);
11261 if ((current_position
+ next_step
) > max_position
)
11262 next_step
= max_position
- current_position
;
11264 start
= current_position
* 512;
11266 /* align reading start to old geometry */
11267 start_buf_shift
= start
% old_data_stripe_length
;
11268 start_src
= start
- start_buf_shift
;
11270 border
= (start_src
/ odata
) - (start
/ ndata
);
11272 if (border
<= __le32_to_cpu(migr_rec
->dest_depth_per_unit
)) {
11273 /* save critical stripes to buf
11274 * start - start address of current unit
11275 * to backup [bytes]
11276 * start_src - start address of current unit
11277 * to backup alligned to source array
11280 unsigned long long next_step_filler
;
11281 unsigned long long copy_length
= next_step
* 512;
11283 /* allign copy area length to stripe in old geometry */
11284 next_step_filler
= ((copy_length
+ start_buf_shift
)
11285 % old_data_stripe_length
);
11286 if (next_step_filler
)
11287 next_step_filler
= (old_data_stripe_length
11288 - next_step_filler
);
11289 dprintf("save_stripes() parameters: start = %llu,\tstart_src = %llu,\tnext_step*512 = %llu,\tstart_in_buf_shift = %llu,\tnext_step_filler = %llu\n",
11290 start
, start_src
, copy_length
,
11291 start_buf_shift
, next_step_filler
);
11293 if (save_stripes(fds
, offsets
, map_src
->num_members
,
11294 chunk
, map_src
->raid_level
,
11295 source_layout
, 0, NULL
, start_src
,
11297 next_step_filler
+ start_buf_shift
,
11299 dprintf("imsm: Cannot save stripes to buffer\n");
11302 /* Convert data to destination format and store it
11303 * in backup general migration area
11305 if (save_backup_imsm(st
, dev
, sra
,
11306 buf
+ start_buf_shift
, copy_length
)) {
11307 dprintf("imsm: Cannot save stripes to target devices\n");
11310 if (save_checkpoint_imsm(st
, sra
,
11311 UNIT_SRC_IN_CP_AREA
)) {
11312 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_IN_CP_AREA)\n");
11316 /* set next step to use whole border area */
11317 border
/= next_step
;
11319 next_step
*= border
;
11321 /* When data backed up, checkpoint stored,
11322 * kick the kernel to reshape unit of data
11324 next_step
= next_step
+ sra
->reshape_progress
;
11325 /* limit next step to array max position */
11326 if (next_step
> max_position
)
11327 next_step
= max_position
;
11328 sysfs_set_num(sra
, NULL
, "suspend_lo", sra
->reshape_progress
);
11329 sysfs_set_num(sra
, NULL
, "suspend_hi", next_step
);
11330 sra
->reshape_progress
= next_step
;
11332 /* wait until reshape finish */
11333 if (wait_for_reshape_imsm(sra
, ndata
)) {
11334 dprintf("wait_for_reshape_imsm returned error!\n");
11340 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
11341 /* ignore error == 2, this can mean end of reshape here
11343 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL)\n");
11349 /* clear migr_rec on disks after successful migration */
11352 memset(super
->migr_rec_buf
, 0, MIGR_REC_BUF_SECTORS
*sector_size
);
11353 for (d
= super
->disks
; d
; d
= d
->next
) {
11354 if (d
->index
< 0 || is_failed(&d
->disk
))
11356 unsigned long long dsize
;
11358 get_dev_size(d
->fd
, NULL
, &dsize
);
11359 if (lseek64(d
->fd
, dsize
- MIGR_REC_SECTOR_POSITION
*sector_size
,
11361 if (write(d
->fd
, super
->migr_rec_buf
,
11362 MIGR_REC_BUF_SECTORS
*sector_size
) !=
11363 MIGR_REC_BUF_SECTORS
*sector_size
)
11364 perror("Write migr_rec failed");
11368 /* return '1' if done */
11372 /* See Grow.c: abort_reshape() for further explanation */
11373 sysfs_set_num(sra
, NULL
, "suspend_lo", 0x7FFFFFFFFFFFFFFFULL
);
11374 sysfs_set_num(sra
, NULL
, "suspend_hi", 0);
11375 sysfs_set_num(sra
, NULL
, "suspend_lo", 0);
11380 #endif /* MDASSEMBLE */
11382 struct superswitch super_imsm
= {
11384 .examine_super
= examine_super_imsm
,
11385 .brief_examine_super
= brief_examine_super_imsm
,
11386 .brief_examine_subarrays
= brief_examine_subarrays_imsm
,
11387 .export_examine_super
= export_examine_super_imsm
,
11388 .detail_super
= detail_super_imsm
,
11389 .brief_detail_super
= brief_detail_super_imsm
,
11390 .write_init_super
= write_init_super_imsm
,
11391 .validate_geometry
= validate_geometry_imsm
,
11392 .add_to_super
= add_to_super_imsm
,
11393 .remove_from_super
= remove_from_super_imsm
,
11394 .detail_platform
= detail_platform_imsm
,
11395 .export_detail_platform
= export_detail_platform_imsm
,
11396 .kill_subarray
= kill_subarray_imsm
,
11397 .update_subarray
= update_subarray_imsm
,
11398 .load_container
= load_container_imsm
,
11399 .default_geometry
= default_geometry_imsm
,
11400 .get_disk_controller_domain
= imsm_get_disk_controller_domain
,
11401 .reshape_super
= imsm_reshape_super
,
11402 .manage_reshape
= imsm_manage_reshape
,
11403 .recover_backup
= recover_backup_imsm
,
11404 .copy_metadata
= copy_metadata_imsm
,
11406 .match_home
= match_home_imsm
,
11407 .uuid_from_super
= uuid_from_super_imsm
,
11408 .getinfo_super
= getinfo_super_imsm
,
11409 .getinfo_super_disks
= getinfo_super_disks_imsm
,
11410 .update_super
= update_super_imsm
,
11412 .avail_size
= avail_size_imsm
,
11413 .min_acceptable_spare_size
= min_acceptable_spare_size_imsm
,
11415 .compare_super
= compare_super_imsm
,
11417 .load_super
= load_super_imsm
,
11418 .init_super
= init_super_imsm
,
11419 .store_super
= store_super_imsm
,
11420 .free_super
= free_super_imsm
,
11421 .match_metadata_desc
= match_metadata_desc_imsm
,
11422 .container_content
= container_content_imsm
,
11423 .validate_container
= validate_container_imsm
,
11430 .open_new
= imsm_open_new
,
11431 .set_array_state
= imsm_set_array_state
,
11432 .set_disk
= imsm_set_disk
,
11433 .sync_metadata
= imsm_sync_metadata
,
11434 .activate_spare
= imsm_activate_spare
,
11435 .process_update
= imsm_process_update
,
11436 .prepare_update
= imsm_prepare_update
,
11437 .record_bad_block
= imsm_record_badblock
,
11438 .clear_bad_block
= imsm_clear_badblock
,
11439 #endif /* MDASSEMBLE */