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)
86 /* Define attributes that are unused but not harmful */
87 #define MPB_ATTRIB_IGNORED (MPB_ATTRIB_NEVER_USE)
89 #define MPB_SECTOR_CNT 2210
90 #define IMSM_RESERVED_SECTORS 4096
91 #define NUM_BLOCKS_DIRTY_STRIPE_REGION 2056
92 #define SECT_PER_MB_SHIFT 11
94 /* Disk configuration info. */
95 #define IMSM_MAX_DEVICES 255
97 __u8 serial
[MAX_RAID_SERIAL_LEN
];/* 0xD8 - 0xE7 ascii serial number */
98 __u32 total_blocks_lo
; /* 0xE8 - 0xEB total blocks lo */
99 __u32 scsi_id
; /* 0xEC - 0xEF scsi ID */
100 #define SPARE_DISK __cpu_to_le32(0x01) /* Spare */
101 #define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */
102 #define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */
103 __u32 status
; /* 0xF0 - 0xF3 */
104 __u32 owner_cfg_num
; /* which config 0,1,2... owns this disk */
105 __u32 total_blocks_hi
; /* 0xF4 - 0xF5 total blocks hi */
106 #define IMSM_DISK_FILLERS 3
107 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF5 - 0x107 MPB_DISK_FILLERS for future expansion */
110 /* map selector for map managment
116 /* RAID map configuration infos. */
118 __u32 pba_of_lba0_lo
; /* start address of partition */
119 __u32 blocks_per_member_lo
;/* blocks per member */
120 __u32 num_data_stripes_lo
; /* number of data stripes */
121 __u16 blocks_per_strip
;
122 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
123 #define IMSM_T_STATE_NORMAL 0
124 #define IMSM_T_STATE_UNINITIALIZED 1
125 #define IMSM_T_STATE_DEGRADED 2
126 #define IMSM_T_STATE_FAILED 3
128 #define IMSM_T_RAID0 0
129 #define IMSM_T_RAID1 1
130 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
131 __u8 num_members
; /* number of member disks */
132 __u8 num_domains
; /* number of parity domains */
133 __u8 failed_disk_num
; /* valid only when state is degraded */
135 __u32 pba_of_lba0_hi
;
136 __u32 blocks_per_member_hi
;
137 __u32 num_data_stripes_hi
;
138 __u32 filler
[4]; /* expansion area */
139 #define IMSM_ORD_REBUILD (1 << 24)
140 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
141 * top byte contains some flags
143 } __attribute__ ((packed
));
146 __u32 curr_migr_unit
;
147 __u32 checkpoint_id
; /* id to access curr_migr_unit */
148 __u8 migr_state
; /* Normal or Migrating */
150 #define MIGR_REBUILD 1
151 #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */
152 #define MIGR_GEN_MIGR 3
153 #define MIGR_STATE_CHANGE 4
154 #define MIGR_REPAIR 5
155 __u8 migr_type
; /* Initializing, Rebuilding, ... */
157 __u8 fs_state
; /* fast-sync state for CnG (0xff == disabled) */
158 __u16 verify_errors
; /* number of mismatches */
159 __u16 bad_blocks
; /* number of bad blocks during verify */
161 struct imsm_map map
[1];
162 /* here comes another one if migr_state */
163 } __attribute__ ((packed
));
166 __u8 volume
[MAX_RAID_SERIAL_LEN
];
169 #define DEV_BOOTABLE __cpu_to_le32(0x01)
170 #define DEV_BOOT_DEVICE __cpu_to_le32(0x02)
171 #define DEV_READ_COALESCING __cpu_to_le32(0x04)
172 #define DEV_WRITE_COALESCING __cpu_to_le32(0x08)
173 #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10)
174 #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20)
175 #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40)
176 #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80)
177 #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100)
178 #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200)
179 #define DEV_CLONE_N_GO __cpu_to_le32(0x400)
180 #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800)
181 #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000)
182 __u32 status
; /* Persistent RaidDev status */
183 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
187 __u8 cng_master_disk
;
191 #define IMSM_DEV_FILLERS 10
192 __u32 filler
[IMSM_DEV_FILLERS
];
194 } __attribute__ ((packed
));
197 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
198 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
199 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
200 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
201 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
202 __u32 error_log_size
; /* 0x30 - 0x33 in bytes */
203 __u32 attributes
; /* 0x34 - 0x37 */
204 __u8 num_disks
; /* 0x38 Number of configured disks */
205 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
206 __u8 error_log_pos
; /* 0x3A */
207 __u8 fill
[1]; /* 0x3B */
208 __u32 cache_size
; /* 0x3c - 0x40 in mb */
209 __u32 orig_family_num
; /* 0x40 - 0x43 original family num */
210 __u32 pwr_cycle_count
; /* 0x44 - 0x47 simulated power cycle count for array */
211 __u32 bbm_log_size
; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */
212 #define IMSM_FILLERS 35
213 __u32 filler
[IMSM_FILLERS
]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */
214 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
215 /* here comes imsm_dev[num_raid_devs] */
216 /* here comes BBM logs */
217 } __attribute__ ((packed
));
219 #define BBM_LOG_MAX_ENTRIES 254
221 struct bbm_log_entry
{
222 __u64 defective_block_start
;
223 #define UNREADABLE 0xFFFFFFFF
224 __u32 spare_block_offset
;
225 __u16 remapped_marked_count
;
227 } __attribute__ ((__packed__
));
230 __u32 signature
; /* 0xABADB10C */
232 __u32 reserved_spare_block_count
; /* 0 */
233 __u32 reserved
; /* 0xFFFF */
234 __u64 first_spare_lba
;
235 struct bbm_log_entry mapped_block_entries
[BBM_LOG_MAX_ENTRIES
];
236 } __attribute__ ((__packed__
));
239 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
242 #define RAID_DISK_RESERVED_BLOCKS_IMSM_HI 2209
244 #define GEN_MIGR_AREA_SIZE 2048 /* General Migration Copy Area size in blocks */
246 #define MIGR_REC_BUF_SIZE 512 /* size of migr_record i/o buffer */
247 #define MIGR_REC_POSITION 512 /* migr_record position offset on disk,
248 * MIGR_REC_BUF_SIZE <= MIGR_REC_POSITION
251 #define UNIT_SRC_NORMAL 0 /* Source data for curr_migr_unit must
252 * be recovered using srcMap */
253 #define UNIT_SRC_IN_CP_AREA 1 /* Source data for curr_migr_unit has
254 * already been migrated and must
255 * be recovered from checkpoint area */
257 __u32 rec_status
; /* Status used to determine how to restart
258 * migration in case it aborts
260 __u32 curr_migr_unit
; /* 0..numMigrUnits-1 */
261 __u32 family_num
; /* Family number of MPB
262 * containing the RaidDev
263 * that is migrating */
264 __u32 ascending_migr
; /* True if migrating in increasing
266 __u32 blocks_per_unit
; /* Num disk blocks per unit of operation */
267 __u32 dest_depth_per_unit
; /* Num member blocks each destMap
269 * advances per unit-of-operation */
270 __u32 ckpt_area_pba
; /* Pba of first block of ckpt copy area */
271 __u32 dest_1st_member_lba
; /* First member lba on first
272 * stripe of destination */
273 __u32 num_migr_units
; /* Total num migration units-of-op */
274 __u32 post_migr_vol_cap
; /* Size of volume after
275 * migration completes */
276 __u32 post_migr_vol_cap_hi
; /* Expansion space for LBA64 */
277 __u32 ckpt_read_disk_num
; /* Which member disk in destSubMap[0] the
278 * migration ckpt record was read from
279 * (for recovered migrations) */
280 } __attribute__ ((__packed__
));
285 * 2: metadata does not match
293 struct md_list
*next
;
296 #define pr_vrb(fmt, arg...) (void) (verbose && pr_err(fmt, ##arg))
298 static __u8
migr_type(struct imsm_dev
*dev
)
300 if (dev
->vol
.migr_type
== MIGR_VERIFY
&&
301 dev
->status
& DEV_VERIFY_AND_FIX
)
304 return dev
->vol
.migr_type
;
307 static void set_migr_type(struct imsm_dev
*dev
, __u8 migr_type
)
309 /* for compatibility with older oroms convert MIGR_REPAIR, into
310 * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status
312 if (migr_type
== MIGR_REPAIR
) {
313 dev
->vol
.migr_type
= MIGR_VERIFY
;
314 dev
->status
|= DEV_VERIFY_AND_FIX
;
316 dev
->vol
.migr_type
= migr_type
;
317 dev
->status
&= ~DEV_VERIFY_AND_FIX
;
321 static unsigned int sector_count(__u32 bytes
)
323 return ROUND_UP(bytes
, 512) / 512;
326 static unsigned int mpb_sectors(struct imsm_super
*mpb
)
328 return sector_count(__le32_to_cpu(mpb
->mpb_size
));
332 struct imsm_dev
*dev
;
333 struct intel_dev
*next
;
338 enum sys_dev_type type
;
341 struct intel_hba
*next
;
348 /* internal representation of IMSM metadata */
351 void *buf
; /* O_DIRECT buffer for reading/writing metadata */
352 struct imsm_super
*anchor
; /* immovable parameters */
355 void *migr_rec_buf
; /* buffer for I/O operations */
356 struct migr_record
*migr_rec
; /* migration record */
358 int clean_migration_record_by_mdmon
; /* when reshape is switched to next
359 array, it indicates that mdmon is allowed to clean migration
361 size_t len
; /* size of the 'buf' allocation */
362 void *next_buf
; /* for realloc'ing buf from the manager */
364 int updates_pending
; /* count of pending updates for mdmon */
365 int current_vol
; /* index of raid device undergoing creation */
366 unsigned long long create_offset
; /* common start for 'current_vol' */
367 __u32 random
; /* random data for seeding new family numbers */
368 struct intel_dev
*devlist
;
372 __u8 serial
[MAX_RAID_SERIAL_LEN
];
375 struct imsm_disk disk
;
378 struct extent
*e
; /* for determining freespace @ create */
379 int raiddisk
; /* slot to fill in autolayout */
381 } *disks
, *current_disk
;
382 struct dl
*disk_mgmt_list
; /* list of disks to add/remove while mdmon
384 struct dl
*missing
; /* disks removed while we weren't looking */
385 struct bbm_log
*bbm_log
;
386 struct intel_hba
*hba
; /* device path of the raid controller for this metadata */
387 const struct imsm_orom
*orom
; /* platform firmware support */
388 struct intel_super
*next
; /* (temp) list for disambiguating family_num */
392 struct imsm_disk disk
;
393 #define IMSM_UNKNOWN_OWNER (-1)
395 struct intel_disk
*next
;
399 unsigned long long start
, size
;
402 /* definitions of reshape process types */
403 enum imsm_reshape_type
{
409 /* definition of messages passed to imsm_process_update */
410 enum imsm_update_type
{
411 update_activate_spare
,
415 update_add_remove_disk
,
416 update_reshape_container_disks
,
417 update_reshape_migration
,
419 update_general_migration_checkpoint
,
423 struct imsm_update_activate_spare
{
424 enum imsm_update_type type
;
428 struct imsm_update_activate_spare
*next
;
434 unsigned long long size
;
441 enum takeover_direction
{
445 struct imsm_update_takeover
{
446 enum imsm_update_type type
;
448 enum takeover_direction direction
;
451 struct imsm_update_reshape
{
452 enum imsm_update_type type
;
456 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
459 struct imsm_update_reshape_migration
{
460 enum imsm_update_type type
;
463 /* fields for array migration changes
470 int new_disks
[1]; /* new_raid_disks - old_raid_disks makedev number */
473 struct imsm_update_size_change
{
474 enum imsm_update_type type
;
479 struct imsm_update_general_migration_checkpoint
{
480 enum imsm_update_type type
;
481 __u32 curr_migr_unit
;
485 __u8 serial
[MAX_RAID_SERIAL_LEN
];
488 struct imsm_update_create_array
{
489 enum imsm_update_type type
;
494 struct imsm_update_kill_array
{
495 enum imsm_update_type type
;
499 struct imsm_update_rename_array
{
500 enum imsm_update_type type
;
501 __u8 name
[MAX_RAID_SERIAL_LEN
];
505 struct imsm_update_add_remove_disk
{
506 enum imsm_update_type type
;
509 static const char *_sys_dev_type
[] = {
510 [SYS_DEV_UNKNOWN
] = "Unknown",
511 [SYS_DEV_SAS
] = "SAS",
512 [SYS_DEV_SATA
] = "SATA",
513 [SYS_DEV_NVME
] = "NVMe",
514 [SYS_DEV_VMD
] = "VMD"
517 const char *get_sys_dev_type(enum sys_dev_type type
)
519 if (type
>= SYS_DEV_MAX
)
520 type
= SYS_DEV_UNKNOWN
;
522 return _sys_dev_type
[type
];
525 static struct intel_hba
* alloc_intel_hba(struct sys_dev
*device
)
527 struct intel_hba
*result
= xmalloc(sizeof(*result
));
529 result
->type
= device
->type
;
530 result
->path
= xstrdup(device
->path
);
532 if (result
->path
&& (result
->pci_id
= strrchr(result
->path
, '/')) != NULL
)
538 static struct intel_hba
* find_intel_hba(struct intel_hba
*hba
, struct sys_dev
*device
)
540 struct intel_hba
*result
=NULL
;
541 for (result
= hba
; result
; result
= result
->next
) {
542 if (result
->type
== device
->type
&& strcmp(result
->path
, device
->path
) == 0)
548 static int attach_hba_to_super(struct intel_super
*super
, struct sys_dev
*device
)
550 struct intel_hba
*hba
;
552 /* check if disk attached to Intel HBA */
553 hba
= find_intel_hba(super
->hba
, device
);
556 /* Check if HBA is already attached to super */
557 if (super
->hba
== NULL
) {
558 super
->hba
= alloc_intel_hba(device
);
563 /* Intel metadata allows for all disks attached to the same type HBA.
564 * Do not support HBA types mixing
566 if (device
->type
!= hba
->type
)
569 /* Always forbid spanning between VMD domains (seen as different controllers by mdadm) */
570 if (device
->type
== SYS_DEV_VMD
&& !path_attached_to_hba(device
->path
, hba
->path
))
573 /* Multiple same type HBAs can be used if they share the same OROM */
574 const struct imsm_orom
*device_orom
= get_orom_by_device_id(device
->dev_id
);
576 if (device_orom
!= super
->orom
)
582 hba
->next
= alloc_intel_hba(device
);
586 static struct sys_dev
* find_disk_attached_hba(int fd
, const char *devname
)
588 struct sys_dev
*list
, *elem
;
591 if ((list
= find_intel_devices()) == NULL
)
595 disk_path
= (char *) devname
;
597 disk_path
= diskfd_to_devpath(fd
);
602 for (elem
= list
; elem
; elem
= elem
->next
)
603 if (path_attached_to_hba(disk_path
, elem
->path
))
606 if (disk_path
!= devname
)
612 static int find_intel_hba_capability(int fd
, struct intel_super
*super
,
615 static struct supertype
*match_metadata_desc_imsm(char *arg
)
617 struct supertype
*st
;
619 if (strcmp(arg
, "imsm") != 0 &&
620 strcmp(arg
, "default") != 0
624 st
= xcalloc(1, sizeof(*st
));
625 st
->ss
= &super_imsm
;
626 st
->max_devs
= IMSM_MAX_DEVICES
;
627 st
->minor_version
= 0;
633 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
635 return &mpb
->sig
[MPB_SIG_LEN
];
639 /* retrieve a disk directly from the anchor when the anchor is known to be
640 * up-to-date, currently only at load time
642 static struct imsm_disk
*__get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
644 if (index
>= mpb
->num_disks
)
646 return &mpb
->disk
[index
];
649 /* retrieve the disk description based on a index of the disk
652 static struct dl
*get_imsm_dl_disk(struct intel_super
*super
, __u8 index
)
656 for (d
= super
->disks
; d
; d
= d
->next
)
657 if (d
->index
== index
)
662 /* retrieve a disk from the parsed metadata */
663 static struct imsm_disk
*get_imsm_disk(struct intel_super
*super
, __u8 index
)
667 dl
= get_imsm_dl_disk(super
, index
);
674 /* generate a checksum directly from the anchor when the anchor is known to be
675 * up-to-date, currently only at load or write_super after coalescing
677 static __u32
__gen_imsm_checksum(struct imsm_super
*mpb
)
679 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
680 __u32
*p
= (__u32
*) mpb
;
684 sum
+= __le32_to_cpu(*p
);
688 return sum
- __le32_to_cpu(mpb
->check_sum
);
691 static size_t sizeof_imsm_map(struct imsm_map
*map
)
693 return sizeof(struct imsm_map
) + sizeof(__u32
) * (map
->num_members
- 1);
696 struct imsm_map
*get_imsm_map(struct imsm_dev
*dev
, int second_map
)
698 /* A device can have 2 maps if it is in the middle of a migration.
700 * MAP_0 - we return the first map
701 * MAP_1 - we return the second map if it exists, else NULL
702 * MAP_X - we return the second map if it exists, else the first
704 struct imsm_map
*map
= &dev
->vol
.map
[0];
705 struct imsm_map
*map2
= NULL
;
707 if (dev
->vol
.migr_state
)
708 map2
= (void *)map
+ sizeof_imsm_map(map
);
710 switch (second_map
) {
727 /* return the size of the device.
728 * migr_state increases the returned size if map[0] were to be duplicated
730 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
, int migr_state
)
732 size_t size
= sizeof(*dev
) - sizeof(struct imsm_map
) +
733 sizeof_imsm_map(get_imsm_map(dev
, MAP_0
));
735 /* migrating means an additional map */
736 if (dev
->vol
.migr_state
)
737 size
+= sizeof_imsm_map(get_imsm_map(dev
, MAP_1
));
739 size
+= sizeof_imsm_map(get_imsm_map(dev
, MAP_0
));
745 /* retrieve disk serial number list from a metadata update */
746 static struct disk_info
*get_disk_info(struct imsm_update_create_array
*update
)
749 struct disk_info
*inf
;
751 inf
= u
+ sizeof(*update
) - sizeof(struct imsm_dev
) +
752 sizeof_imsm_dev(&update
->dev
, 0);
758 static struct imsm_dev
*__get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
764 if (index
>= mpb
->num_raid_devs
)
767 /* devices start after all disks */
768 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
770 for (i
= 0; i
<= index
; i
++)
772 return _mpb
+ offset
;
774 offset
+= sizeof_imsm_dev(_mpb
+ offset
, 0);
779 static struct imsm_dev
*get_imsm_dev(struct intel_super
*super
, __u8 index
)
781 struct intel_dev
*dv
;
783 if (index
>= super
->anchor
->num_raid_devs
)
785 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
786 if (dv
->index
== index
)
793 * == MAP_0 get first map
794 * == MAP_1 get second map
795 * == MAP_X than get map according to the current migr_state
797 static __u32
get_imsm_ord_tbl_ent(struct imsm_dev
*dev
,
801 struct imsm_map
*map
;
803 map
= get_imsm_map(dev
, second_map
);
805 /* top byte identifies disk under rebuild */
806 return __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
809 #define ord_to_idx(ord) (((ord) << 8) >> 8)
810 static __u32
get_imsm_disk_idx(struct imsm_dev
*dev
, int slot
, int second_map
)
812 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, second_map
);
814 return ord_to_idx(ord
);
817 static void set_imsm_ord_tbl_ent(struct imsm_map
*map
, int slot
, __u32 ord
)
819 map
->disk_ord_tbl
[slot
] = __cpu_to_le32(ord
);
822 static int get_imsm_disk_slot(struct imsm_map
*map
, unsigned idx
)
827 for (slot
= 0; slot
< map
->num_members
; slot
++) {
828 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
829 if (ord_to_idx(ord
) == idx
)
836 static int get_imsm_raid_level(struct imsm_map
*map
)
838 if (map
->raid_level
== 1) {
839 if (map
->num_members
== 2)
845 return map
->raid_level
;
848 static int cmp_extent(const void *av
, const void *bv
)
850 const struct extent
*a
= av
;
851 const struct extent
*b
= bv
;
852 if (a
->start
< b
->start
)
854 if (a
->start
> b
->start
)
859 static int count_memberships(struct dl
*dl
, struct intel_super
*super
)
864 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
865 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
866 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
868 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
875 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
);
877 static int split_ull(unsigned long long n
, __u32
*lo
, __u32
*hi
)
879 if (lo
== 0 || hi
== 0)
881 *lo
= __le32_to_cpu((unsigned)n
);
882 *hi
= __le32_to_cpu((unsigned)(n
>> 32));
886 static unsigned long long join_u32(__u32 lo
, __u32 hi
)
888 return (unsigned long long)__le32_to_cpu(lo
) |
889 (((unsigned long long)__le32_to_cpu(hi
)) << 32);
892 static unsigned long long total_blocks(struct imsm_disk
*disk
)
896 return join_u32(disk
->total_blocks_lo
, disk
->total_blocks_hi
);
899 static unsigned long long pba_of_lba0(struct imsm_map
*map
)
903 return join_u32(map
->pba_of_lba0_lo
, map
->pba_of_lba0_hi
);
906 static unsigned long long blocks_per_member(struct imsm_map
*map
)
910 return join_u32(map
->blocks_per_member_lo
, map
->blocks_per_member_hi
);
914 static unsigned long long num_data_stripes(struct imsm_map
*map
)
918 return join_u32(map
->num_data_stripes_lo
, map
->num_data_stripes_hi
);
921 static void set_total_blocks(struct imsm_disk
*disk
, unsigned long long n
)
923 split_ull(n
, &disk
->total_blocks_lo
, &disk
->total_blocks_hi
);
927 static void set_pba_of_lba0(struct imsm_map
*map
, unsigned long long n
)
929 split_ull(n
, &map
->pba_of_lba0_lo
, &map
->pba_of_lba0_hi
);
932 static void set_blocks_per_member(struct imsm_map
*map
, unsigned long long n
)
934 split_ull(n
, &map
->blocks_per_member_lo
, &map
->blocks_per_member_hi
);
937 static void set_num_data_stripes(struct imsm_map
*map
, unsigned long long n
)
939 split_ull(n
, &map
->num_data_stripes_lo
, &map
->num_data_stripes_hi
);
942 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
944 /* find a list of used extents on the given physical device */
945 struct extent
*rv
, *e
;
947 int memberships
= count_memberships(dl
, super
);
950 /* trim the reserved area for spares, so they can join any array
951 * regardless of whether the OROM has assigned sectors from the
952 * IMSM_RESERVED_SECTORS region
955 reservation
= imsm_min_reserved_sectors(super
);
957 reservation
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
959 rv
= xcalloc(sizeof(struct extent
), (memberships
+ 1));
962 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
963 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
964 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
966 if (get_imsm_disk_slot(map
, dl
->index
) >= 0) {
967 e
->start
= pba_of_lba0(map
);
968 e
->size
= blocks_per_member(map
);
972 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
974 /* determine the start of the metadata
975 * when no raid devices are defined use the default
976 * ...otherwise allow the metadata to truncate the value
977 * as is the case with older versions of imsm
980 struct extent
*last
= &rv
[memberships
- 1];
981 unsigned long long remainder
;
983 remainder
= total_blocks(&dl
->disk
) - (last
->start
+ last
->size
);
984 /* round down to 1k block to satisfy precision of the kernel
988 /* make sure remainder is still sane */
989 if (remainder
< (unsigned)ROUND_UP(super
->len
, 512) >> 9)
990 remainder
= ROUND_UP(super
->len
, 512) >> 9;
991 if (reservation
> remainder
)
992 reservation
= remainder
;
994 e
->start
= total_blocks(&dl
->disk
) - reservation
;
999 /* try to determine how much space is reserved for metadata from
1000 * the last get_extents() entry, otherwise fallback to the
1003 static __u32
imsm_reserved_sectors(struct intel_super
*super
, struct dl
*dl
)
1009 /* for spares just return a minimal reservation which will grow
1010 * once the spare is picked up by an array
1012 if (dl
->index
== -1)
1013 return MPB_SECTOR_CNT
;
1015 e
= get_extents(super
, dl
);
1017 return MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1019 /* scroll to last entry */
1020 for (i
= 0; e
[i
].size
; i
++)
1023 rv
= total_blocks(&dl
->disk
) - e
[i
].start
;
1030 static int is_spare(struct imsm_disk
*disk
)
1032 return (disk
->status
& SPARE_DISK
) == SPARE_DISK
;
1035 static int is_configured(struct imsm_disk
*disk
)
1037 return (disk
->status
& CONFIGURED_DISK
) == CONFIGURED_DISK
;
1040 static int is_failed(struct imsm_disk
*disk
)
1042 return (disk
->status
& FAILED_DISK
) == FAILED_DISK
;
1045 /* try to determine how much space is reserved for metadata from
1046 * the last get_extents() entry on the smallest active disk,
1047 * otherwise fallback to the default
1049 static __u32
imsm_min_reserved_sectors(struct intel_super
*super
)
1053 unsigned long long min_active
;
1055 __u32 rv
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1056 struct dl
*dl
, *dl_min
= NULL
;
1062 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
1065 unsigned long long blocks
= total_blocks(&dl
->disk
);
1066 if (blocks
< min_active
|| min_active
== 0) {
1068 min_active
= blocks
;
1074 /* find last lba used by subarrays on the smallest active disk */
1075 e
= get_extents(super
, dl_min
);
1078 for (i
= 0; e
[i
].size
; i
++)
1081 remainder
= min_active
- e
[i
].start
;
1084 /* to give priority to recovery we should not require full
1085 IMSM_RESERVED_SECTORS from the spare */
1086 rv
= MPB_SECTOR_CNT
+ NUM_BLOCKS_DIRTY_STRIPE_REGION
;
1088 /* if real reservation is smaller use that value */
1089 return (remainder
< rv
) ? remainder
: rv
;
1092 /* Return minimum size of a spare that can be used in this array*/
1093 static unsigned long long min_acceptable_spare_size_imsm(struct supertype
*st
)
1095 struct intel_super
*super
= st
->sb
;
1099 unsigned long long rv
= 0;
1103 /* find first active disk in array */
1105 while (dl
&& (is_failed(&dl
->disk
) || dl
->index
== -1))
1109 /* find last lba used by subarrays */
1110 e
= get_extents(super
, dl
);
1113 for (i
= 0; e
[i
].size
; i
++)
1116 rv
= e
[i
-1].start
+ e
[i
-1].size
;
1119 /* add the amount of space needed for metadata */
1120 rv
= rv
+ imsm_min_reserved_sectors(super
);
1125 static int is_gen_migration(struct imsm_dev
*dev
);
1128 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
1129 struct imsm_dev
*dev
);
1131 static void print_imsm_dev(struct intel_super
*super
,
1132 struct imsm_dev
*dev
,
1138 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
1139 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
1143 printf("[%.16s]:\n", dev
->volume
);
1144 printf(" UUID : %s\n", uuid
);
1145 printf(" RAID Level : %d", get_imsm_raid_level(map
));
1147 printf(" <-- %d", get_imsm_raid_level(map2
));
1149 printf(" Members : %d", map
->num_members
);
1151 printf(" <-- %d", map2
->num_members
);
1153 printf(" Slots : [");
1154 for (i
= 0; i
< map
->num_members
; i
++) {
1155 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_0
);
1156 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1161 for (i
= 0; i
< map2
->num_members
; i
++) {
1162 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_1
);
1163 printf("%s", ord
& IMSM_ORD_REBUILD
? "_" : "U");
1168 printf(" Failed disk : ");
1169 if (map
->failed_disk_num
== 0xff)
1172 printf("%i", map
->failed_disk_num
);
1174 slot
= get_imsm_disk_slot(map
, disk_idx
);
1176 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
1177 printf(" This Slot : %d%s\n", slot
,
1178 ord
& IMSM_ORD_REBUILD
? " (out-of-sync)" : "");
1180 printf(" This Slot : ?\n");
1181 sz
= __le32_to_cpu(dev
->size_high
);
1183 sz
+= __le32_to_cpu(dev
->size_low
);
1184 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
1185 human_size(sz
* 512));
1186 sz
= blocks_per_member(map
);
1187 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
1188 human_size(sz
* 512));
1189 printf(" Sector Offset : %llu\n",
1191 printf(" Num Stripes : %llu\n",
1192 num_data_stripes(map
));
1193 printf(" Chunk Size : %u KiB",
1194 __le16_to_cpu(map
->blocks_per_strip
) / 2);
1196 printf(" <-- %u KiB",
1197 __le16_to_cpu(map2
->blocks_per_strip
) / 2);
1199 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
1200 printf(" Migrate State : ");
1201 if (dev
->vol
.migr_state
) {
1202 if (migr_type(dev
) == MIGR_INIT
)
1203 printf("initialize\n");
1204 else if (migr_type(dev
) == MIGR_REBUILD
)
1205 printf("rebuild\n");
1206 else if (migr_type(dev
) == MIGR_VERIFY
)
1208 else if (migr_type(dev
) == MIGR_GEN_MIGR
)
1209 printf("general migration\n");
1210 else if (migr_type(dev
) == MIGR_STATE_CHANGE
)
1211 printf("state change\n");
1212 else if (migr_type(dev
) == MIGR_REPAIR
)
1215 printf("<unknown:%d>\n", migr_type(dev
));
1218 printf(" Map State : %s", map_state_str
[map
->map_state
]);
1219 if (dev
->vol
.migr_state
) {
1220 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
1222 printf(" <-- %s", map_state_str
[map
->map_state
]);
1223 printf("\n Checkpoint : %u ",
1224 __le32_to_cpu(dev
->vol
.curr_migr_unit
));
1225 if ((is_gen_migration(dev
)) && ((slot
> 1) || (slot
< 0)))
1228 printf("(%llu)", (unsigned long long)
1229 blocks_per_migr_unit(super
, dev
));
1232 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
1235 static void print_imsm_disk(struct imsm_disk
*disk
, int index
, __u32 reserved
)
1237 char str
[MAX_RAID_SERIAL_LEN
+ 1];
1240 if (index
< -1 || !disk
)
1244 snprintf(str
, MAX_RAID_SERIAL_LEN
+ 1, "%s", disk
->serial
);
1246 printf(" Disk%02d Serial : %s\n", index
, str
);
1248 printf(" Disk Serial : %s\n", str
);
1249 printf(" State :%s%s%s\n", is_spare(disk
) ? " spare" : "",
1250 is_configured(disk
) ? " active" : "",
1251 is_failed(disk
) ? " failed" : "");
1252 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
1253 sz
= total_blocks(disk
) - reserved
;
1254 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
1255 human_size(sz
* 512));
1258 void examine_migr_rec_imsm(struct intel_super
*super
)
1260 struct migr_record
*migr_rec
= super
->migr_rec
;
1261 struct imsm_super
*mpb
= super
->anchor
;
1264 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1265 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1266 struct imsm_map
*map
;
1269 if (is_gen_migration(dev
) == 0)
1272 printf("\nMigration Record Information:");
1274 /* first map under migration */
1275 map
= get_imsm_map(dev
, MAP_0
);
1277 slot
= get_imsm_disk_slot(map
, super
->disks
->index
);
1278 if ((map
== NULL
) || (slot
> 1) || (slot
< 0)) {
1279 printf(" Empty\n ");
1280 printf("Examine one of first two disks in array\n");
1283 printf("\n Status : ");
1284 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
1287 printf("Contains Data\n");
1288 printf(" Current Unit : %u\n",
1289 __le32_to_cpu(migr_rec
->curr_migr_unit
));
1290 printf(" Family : %u\n",
1291 __le32_to_cpu(migr_rec
->family_num
));
1292 printf(" Ascending : %u\n",
1293 __le32_to_cpu(migr_rec
->ascending_migr
));
1294 printf(" Blocks Per Unit : %u\n",
1295 __le32_to_cpu(migr_rec
->blocks_per_unit
));
1296 printf(" Dest. Depth Per Unit : %u\n",
1297 __le32_to_cpu(migr_rec
->dest_depth_per_unit
));
1298 printf(" Checkpoint Area pba : %u\n",
1299 __le32_to_cpu(migr_rec
->ckpt_area_pba
));
1300 printf(" First member lba : %u\n",
1301 __le32_to_cpu(migr_rec
->dest_1st_member_lba
));
1302 printf(" Total Number of Units : %u\n",
1303 __le32_to_cpu(migr_rec
->num_migr_units
));
1304 printf(" Size of volume : %u\n",
1305 __le32_to_cpu(migr_rec
->post_migr_vol_cap
));
1306 printf(" Expansion space for LBA64 : %u\n",
1307 __le32_to_cpu(migr_rec
->post_migr_vol_cap_hi
));
1308 printf(" Record was read from : %u\n",
1309 __le32_to_cpu(migr_rec
->ckpt_read_disk_num
));
1314 #endif /* MDASSEMBLE */
1315 /*******************************************************************************
1316 * function: imsm_check_attributes
1317 * Description: Function checks if features represented by attributes flags
1318 * are supported by mdadm.
1320 * attributes - Attributes read from metadata
1322 * 0 - passed attributes contains unsupported features flags
1323 * 1 - all features are supported
1324 ******************************************************************************/
1325 static int imsm_check_attributes(__u32 attributes
)
1328 __u32 not_supported
= MPB_ATTRIB_SUPPORTED
^0xffffffff;
1330 not_supported
&= ~MPB_ATTRIB_IGNORED
;
1332 not_supported
&= attributes
;
1333 if (not_supported
) {
1334 pr_err("(IMSM): Unsupported attributes : %x\n",
1335 (unsigned)__le32_to_cpu(not_supported
));
1336 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1337 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n");
1338 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1340 if (not_supported
& MPB_ATTRIB_2TB
) {
1341 dprintf("\t\tMPB_ATTRIB_2TB\n");
1342 not_supported
^= MPB_ATTRIB_2TB
;
1344 if (not_supported
& MPB_ATTRIB_RAID0
) {
1345 dprintf("\t\tMPB_ATTRIB_RAID0\n");
1346 not_supported
^= MPB_ATTRIB_RAID0
;
1348 if (not_supported
& MPB_ATTRIB_RAID1
) {
1349 dprintf("\t\tMPB_ATTRIB_RAID1\n");
1350 not_supported
^= MPB_ATTRIB_RAID1
;
1352 if (not_supported
& MPB_ATTRIB_RAID10
) {
1353 dprintf("\t\tMPB_ATTRIB_RAID10\n");
1354 not_supported
^= MPB_ATTRIB_RAID10
;
1356 if (not_supported
& MPB_ATTRIB_RAID1E
) {
1357 dprintf("\t\tMPB_ATTRIB_RAID1E\n");
1358 not_supported
^= MPB_ATTRIB_RAID1E
;
1360 if (not_supported
& MPB_ATTRIB_RAID5
) {
1361 dprintf("\t\tMPB_ATTRIB_RAID5\n");
1362 not_supported
^= MPB_ATTRIB_RAID5
;
1364 if (not_supported
& MPB_ATTRIB_RAIDCNG
) {
1365 dprintf("\t\tMPB_ATTRIB_RAIDCNG\n");
1366 not_supported
^= MPB_ATTRIB_RAIDCNG
;
1368 if (not_supported
& MPB_ATTRIB_BBM
) {
1369 dprintf("\t\tMPB_ATTRIB_BBM\n");
1370 not_supported
^= MPB_ATTRIB_BBM
;
1372 if (not_supported
& MPB_ATTRIB_CHECKSUM_VERIFY
) {
1373 dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n");
1374 not_supported
^= MPB_ATTRIB_CHECKSUM_VERIFY
;
1376 if (not_supported
& MPB_ATTRIB_EXP_STRIPE_SIZE
) {
1377 dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n");
1378 not_supported
^= MPB_ATTRIB_EXP_STRIPE_SIZE
;
1380 if (not_supported
& MPB_ATTRIB_2TB_DISK
) {
1381 dprintf("\t\tMPB_ATTRIB_2TB_DISK\n");
1382 not_supported
^= MPB_ATTRIB_2TB_DISK
;
1384 if (not_supported
& MPB_ATTRIB_NEVER_USE2
) {
1385 dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n");
1386 not_supported
^= MPB_ATTRIB_NEVER_USE2
;
1388 if (not_supported
& MPB_ATTRIB_NEVER_USE
) {
1389 dprintf("\t\tMPB_ATTRIB_NEVER_USE\n");
1390 not_supported
^= MPB_ATTRIB_NEVER_USE
;
1394 dprintf("(IMSM): Unknown attributes : %x\n", not_supported
);
1403 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
);
1405 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
1407 struct intel_super
*super
= st
->sb
;
1408 struct imsm_super
*mpb
= super
->anchor
;
1409 char str
[MAX_SIGNATURE_LENGTH
];
1414 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
1417 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
1418 printf(" Magic : %s\n", str
);
1419 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
1420 printf(" Version : %s\n", get_imsm_version(mpb
));
1421 printf(" Orig Family : %08x\n", __le32_to_cpu(mpb
->orig_family_num
));
1422 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
1423 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
1424 printf(" Attributes : ");
1425 if (imsm_check_attributes(mpb
->attributes
))
1426 printf("All supported\n");
1428 printf("not supported\n");
1429 getinfo_super_imsm(st
, &info
, NULL
);
1430 fname_from_uuid(st
, &info
, nbuf
, ':');
1431 printf(" UUID : %s\n", nbuf
+ 5);
1432 sum
= __le32_to_cpu(mpb
->check_sum
);
1433 printf(" Checksum : %08x %s\n", sum
,
1434 __gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
1435 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
));
1436 printf(" Disks : %d\n", mpb
->num_disks
);
1437 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
1438 print_imsm_disk(__get_imsm_disk(mpb
, super
->disks
->index
), super
->disks
->index
, reserved
);
1439 if (super
->bbm_log
) {
1440 struct bbm_log
*log
= super
->bbm_log
;
1443 printf("Bad Block Management Log:\n");
1444 printf(" Log Size : %d\n", __le32_to_cpu(mpb
->bbm_log_size
));
1445 printf(" Signature : %x\n", __le32_to_cpu(log
->signature
));
1446 printf(" Entry Count : %d\n", __le32_to_cpu(log
->entry_count
));
1447 printf(" Spare Blocks : %d\n", __le32_to_cpu(log
->reserved_spare_block_count
));
1448 printf(" First Spare : %llx\n",
1449 (unsigned long long) __le64_to_cpu(log
->first_spare_lba
));
1451 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1453 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1455 super
->current_vol
= i
;
1456 getinfo_super_imsm(st
, &info
, NULL
);
1457 fname_from_uuid(st
, &info
, nbuf
, ':');
1458 print_imsm_dev(super
, dev
, nbuf
+ 5, super
->disks
->index
);
1460 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1461 if (i
== super
->disks
->index
)
1463 print_imsm_disk(__get_imsm_disk(mpb
, i
), i
, reserved
);
1466 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1467 if (dl
->index
== -1)
1468 print_imsm_disk(&dl
->disk
, -1, reserved
);
1470 examine_migr_rec_imsm(super
);
1473 static void brief_examine_super_imsm(struct supertype
*st
, int verbose
)
1475 /* We just write a generic IMSM ARRAY entry */
1478 struct intel_super
*super
= st
->sb
;
1480 if (!super
->anchor
->num_raid_devs
) {
1481 printf("ARRAY metadata=imsm\n");
1485 getinfo_super_imsm(st
, &info
, NULL
);
1486 fname_from_uuid(st
, &info
, nbuf
, ':');
1487 printf("ARRAY metadata=imsm UUID=%s\n", nbuf
+ 5);
1490 static void brief_examine_subarrays_imsm(struct supertype
*st
, int verbose
)
1492 /* We just write a generic IMSM ARRAY entry */
1496 struct intel_super
*super
= st
->sb
;
1499 if (!super
->anchor
->num_raid_devs
)
1502 getinfo_super_imsm(st
, &info
, NULL
);
1503 fname_from_uuid(st
, &info
, nbuf
, ':');
1504 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1505 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
1507 super
->current_vol
= i
;
1508 getinfo_super_imsm(st
, &info
, NULL
);
1509 fname_from_uuid(st
, &info
, nbuf1
, ':');
1510 printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n",
1511 dev
->volume
, nbuf
+ 5, i
, nbuf1
+ 5);
1515 static void export_examine_super_imsm(struct supertype
*st
)
1517 struct intel_super
*super
= st
->sb
;
1518 struct imsm_super
*mpb
= super
->anchor
;
1522 getinfo_super_imsm(st
, &info
, NULL
);
1523 fname_from_uuid(st
, &info
, nbuf
, ':');
1524 printf("MD_METADATA=imsm\n");
1525 printf("MD_LEVEL=container\n");
1526 printf("MD_UUID=%s\n", nbuf
+5);
1527 printf("MD_DEVICES=%u\n", mpb
->num_disks
);
1530 static int copy_metadata_imsm(struct supertype
*st
, int from
, int to
)
1532 /* The second last 512byte sector of the device contains
1533 * the "struct imsm_super" metadata.
1534 * This contains mpb_size which is the size in bytes of the
1535 * extended metadata. This is located immediately before
1537 * We want to read all that, plus the last sector which
1538 * may contain a migration record, and write it all
1542 unsigned long long dsize
, offset
;
1544 struct imsm_super
*sb
;
1547 if (posix_memalign(&buf
, 4096, 4096) != 0)
1550 if (!get_dev_size(from
, NULL
, &dsize
))
1553 if (lseek64(from
, dsize
-1024, 0) < 0)
1555 if (read(from
, buf
, 512) != 512)
1558 if (strncmp((char*)sb
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0)
1561 sectors
= mpb_sectors(sb
) + 2;
1562 offset
= dsize
- sectors
* 512;
1563 if (lseek64(from
, offset
, 0) < 0 ||
1564 lseek64(to
, offset
, 0) < 0)
1566 while (written
< sectors
* 512) {
1567 int n
= sectors
*512 - written
;
1570 if (read(from
, buf
, n
) != n
)
1572 if (write(to
, buf
, n
) != n
)
1583 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
1588 getinfo_super_imsm(st
, &info
, NULL
);
1589 fname_from_uuid(st
, &info
, nbuf
, ':');
1590 printf("\n UUID : %s\n", nbuf
+ 5);
1593 static void brief_detail_super_imsm(struct supertype
*st
)
1597 getinfo_super_imsm(st
, &info
, NULL
);
1598 fname_from_uuid(st
, &info
, nbuf
, ':');
1599 printf(" UUID=%s", nbuf
+ 5);
1602 static int imsm_read_serial(int fd
, char *devname
, __u8
*serial
);
1603 static void fd2devname(int fd
, char *name
);
1605 static int ahci_enumerate_ports(const char *hba_path
, int port_count
, int host_base
, int verbose
)
1607 /* dump an unsorted list of devices attached to AHCI Intel storage
1608 * controller, as well as non-connected ports
1610 int hba_len
= strlen(hba_path
) + 1;
1615 unsigned long port_mask
= (1 << port_count
) - 1;
1617 if (port_count
> (int)sizeof(port_mask
) * 8) {
1619 pr_err("port_count %d out of range\n", port_count
);
1623 /* scroll through /sys/dev/block looking for devices attached to
1626 dir
= opendir("/sys/dev/block");
1627 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
1638 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
1640 path
= devt_to_devpath(makedev(major
, minor
));
1643 if (!path_attached_to_hba(path
, hba_path
)) {
1649 /* retrieve the scsi device type */
1650 if (asprintf(&device
, "/sys/dev/block/%d:%d/device/xxxxxxx", major
, minor
) < 0) {
1652 pr_err("failed to allocate 'device'\n");
1656 sprintf(device
, "/sys/dev/block/%d:%d/device/type", major
, minor
);
1657 if (load_sys(device
, buf
, sizeof(buf
)) != 0) {
1659 pr_err("failed to read device type for %s\n",
1665 type
= strtoul(buf
, NULL
, 10);
1667 /* if it's not a disk print the vendor and model */
1668 if (!(type
== 0 || type
== 7 || type
== 14)) {
1671 sprintf(device
, "/sys/dev/block/%d:%d/device/vendor", major
, minor
);
1672 if (load_sys(device
, buf
, sizeof(buf
)) == 0) {
1673 strncpy(vendor
, buf
, sizeof(vendor
));
1674 vendor
[sizeof(vendor
) - 1] = '\0';
1675 c
= (char *) &vendor
[sizeof(vendor
) - 1];
1676 while (isspace(*c
) || *c
== '\0')
1680 sprintf(device
, "/sys/dev/block/%d:%d/device/model", major
, minor
);
1681 if (load_sys(device
, buf
, sizeof(buf
)) == 0) {
1682 strncpy(model
, buf
, sizeof(model
));
1683 model
[sizeof(model
) - 1] = '\0';
1684 c
= (char *) &model
[sizeof(model
) - 1];
1685 while (isspace(*c
) || *c
== '\0')
1689 if (vendor
[0] && model
[0])
1690 sprintf(buf
, "%.64s %.64s", vendor
, model
);
1692 switch (type
) { /* numbers from hald/linux/device.c */
1693 case 1: sprintf(buf
, "tape"); break;
1694 case 2: sprintf(buf
, "printer"); break;
1695 case 3: sprintf(buf
, "processor"); break;
1697 case 5: sprintf(buf
, "cdrom"); break;
1698 case 6: sprintf(buf
, "scanner"); break;
1699 case 8: sprintf(buf
, "media_changer"); break;
1700 case 9: sprintf(buf
, "comm"); break;
1701 case 12: sprintf(buf
, "raid"); break;
1702 default: sprintf(buf
, "unknown");
1708 /* chop device path to 'host%d' and calculate the port number */
1709 c
= strchr(&path
[hba_len
], '/');
1712 pr_err("%s - invalid path name\n", path
+ hba_len
);
1717 if ((sscanf(&path
[hba_len
], "ata%d", &port
) == 1) ||
1718 ((sscanf(&path
[hba_len
], "host%d", &port
) == 1)))
1722 *c
= '/'; /* repair the full string */
1723 pr_err("failed to determine port number for %s\n",
1730 /* mark this port as used */
1731 port_mask
&= ~(1 << port
);
1733 /* print out the device information */
1735 printf(" Port%d : - non-disk device (%s) -\n", port
, buf
);
1739 fd
= dev_open(ent
->d_name
, O_RDONLY
);
1741 printf(" Port%d : - disk info unavailable -\n", port
);
1743 fd2devname(fd
, buf
);
1744 printf(" Port%d : %s", port
, buf
);
1745 if (imsm_read_serial(fd
, NULL
, (__u8
*) buf
) == 0)
1746 printf(" (%.*s)\n", MAX_RAID_SERIAL_LEN
, buf
);
1761 for (i
= 0; i
< port_count
; i
++)
1762 if (port_mask
& (1 << i
))
1763 printf(" Port%d : - no device attached -\n", i
);
1769 static void print_vmd_attached_devs(struct sys_dev
*hba
)
1777 if (hba
->type
!= SYS_DEV_VMD
)
1780 /* scroll through /sys/dev/block looking for devices attached to
1783 dir
= opendir("/sys/bus/pci/drivers/nvme");
1787 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
1790 /* is 'ent' a device? check that the 'subsystem' link exists and
1791 * that its target matches 'bus'
1793 sprintf(path
, "/sys/bus/pci/drivers/nvme/%s/subsystem",
1795 n
= readlink(path
, link
, sizeof(link
));
1796 if (n
< 0 || n
>= (int)sizeof(link
))
1799 c
= strrchr(link
, '/');
1802 if (strncmp("pci", c
+1, strlen("pci")) != 0)
1805 sprintf(path
, "/sys/bus/pci/drivers/nvme/%s", ent
->d_name
);
1806 /* if not a intel NVMe - skip it*/
1807 if (devpath_to_vendor(path
) != 0x8086)
1810 rp
= realpath(path
, NULL
);
1814 if (path_attached_to_hba(rp
, hba
->path
)) {
1815 printf(" NVMe under VMD : %s\n", rp
);
1823 static void print_found_intel_controllers(struct sys_dev
*elem
)
1825 for (; elem
; elem
= elem
->next
) {
1826 pr_err("found Intel(R) ");
1827 if (elem
->type
== SYS_DEV_SATA
)
1828 fprintf(stderr
, "SATA ");
1829 else if (elem
->type
== SYS_DEV_SAS
)
1830 fprintf(stderr
, "SAS ");
1831 else if (elem
->type
== SYS_DEV_NVME
)
1832 fprintf(stderr
, "NVMe ");
1834 if (elem
->type
== SYS_DEV_VMD
)
1835 fprintf(stderr
, "VMD domain");
1837 fprintf(stderr
, "RAID controller");
1840 fprintf(stderr
, " at %s", elem
->pci_id
);
1841 fprintf(stderr
, ".\n");
1846 static int ahci_get_port_count(const char *hba_path
, int *port_count
)
1853 if ((dir
= opendir(hba_path
)) == NULL
)
1856 for (ent
= readdir(dir
); ent
; ent
= readdir(dir
)) {
1859 if ((sscanf(ent
->d_name
, "ata%d", &host
) != 1) &&
1860 ((sscanf(ent
->d_name
, "host%d", &host
) != 1)))
1862 if (*port_count
== 0)
1864 else if (host
< host_base
)
1867 if (host
+ 1 > *port_count
+ host_base
)
1868 *port_count
= host
+ 1 - host_base
;
1874 static void print_imsm_capability(const struct imsm_orom
*orom
)
1876 printf(" Platform : Intel(R) ");
1877 if (orom
->capabilities
== 0 && orom
->driver_features
== 0)
1878 printf("Matrix Storage Manager\n");
1880 printf("Rapid Storage Technology%s\n",
1881 imsm_orom_is_enterprise(orom
) ? " enterprise" : "");
1882 if (orom
->major_ver
|| orom
->minor_ver
|| orom
->hotfix_ver
|| orom
->build
)
1883 printf(" Version : %d.%d.%d.%d\n", orom
->major_ver
,
1884 orom
->minor_ver
, orom
->hotfix_ver
, orom
->build
);
1885 printf(" RAID Levels :%s%s%s%s%s\n",
1886 imsm_orom_has_raid0(orom
) ? " raid0" : "",
1887 imsm_orom_has_raid1(orom
) ? " raid1" : "",
1888 imsm_orom_has_raid1e(orom
) ? " raid1e" : "",
1889 imsm_orom_has_raid10(orom
) ? " raid10" : "",
1890 imsm_orom_has_raid5(orom
) ? " raid5" : "");
1891 printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
1892 imsm_orom_has_chunk(orom
, 2) ? " 2k" : "",
1893 imsm_orom_has_chunk(orom
, 4) ? " 4k" : "",
1894 imsm_orom_has_chunk(orom
, 8) ? " 8k" : "",
1895 imsm_orom_has_chunk(orom
, 16) ? " 16k" : "",
1896 imsm_orom_has_chunk(orom
, 32) ? " 32k" : "",
1897 imsm_orom_has_chunk(orom
, 64) ? " 64k" : "",
1898 imsm_orom_has_chunk(orom
, 128) ? " 128k" : "",
1899 imsm_orom_has_chunk(orom
, 256) ? " 256k" : "",
1900 imsm_orom_has_chunk(orom
, 512) ? " 512k" : "",
1901 imsm_orom_has_chunk(orom
, 1024*1) ? " 1M" : "",
1902 imsm_orom_has_chunk(orom
, 1024*2) ? " 2M" : "",
1903 imsm_orom_has_chunk(orom
, 1024*4) ? " 4M" : "",
1904 imsm_orom_has_chunk(orom
, 1024*8) ? " 8M" : "",
1905 imsm_orom_has_chunk(orom
, 1024*16) ? " 16M" : "",
1906 imsm_orom_has_chunk(orom
, 1024*32) ? " 32M" : "",
1907 imsm_orom_has_chunk(orom
, 1024*64) ? " 64M" : "");
1908 printf(" 2TB volumes :%s supported\n",
1909 (orom
->attr
& IMSM_OROM_ATTR_2TB
)?"":" not");
1910 printf(" 2TB disks :%s supported\n",
1911 (orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
)?"":" not");
1912 printf(" Max Disks : %d\n", orom
->tds
);
1913 printf(" Max Volumes : %d per array, %d per %s\n",
1914 orom
->vpa
, orom
->vphba
,
1915 imsm_orom_is_nvme(orom
) ? "platform" : "controller");
1919 static void print_imsm_capability_export(const struct imsm_orom
*orom
)
1921 printf("MD_FIRMWARE_TYPE=imsm\n");
1922 if (orom
->major_ver
|| orom
->minor_ver
|| orom
->hotfix_ver
|| orom
->build
)
1923 printf("IMSM_VERSION=%d.%d.%d.%d\n", orom
->major_ver
, orom
->minor_ver
,
1924 orom
->hotfix_ver
, orom
->build
);
1925 printf("IMSM_SUPPORTED_RAID_LEVELS=%s%s%s%s%s\n",
1926 imsm_orom_has_raid0(orom
) ? "raid0 " : "",
1927 imsm_orom_has_raid1(orom
) ? "raid1 " : "",
1928 imsm_orom_has_raid1e(orom
) ? "raid1e " : "",
1929 imsm_orom_has_raid5(orom
) ? "raid10 " : "",
1930 imsm_orom_has_raid10(orom
) ? "raid5 " : "");
1931 printf("IMSM_SUPPORTED_CHUNK_SIZES=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
1932 imsm_orom_has_chunk(orom
, 2) ? "2k " : "",
1933 imsm_orom_has_chunk(orom
, 4) ? "4k " : "",
1934 imsm_orom_has_chunk(orom
, 8) ? "8k " : "",
1935 imsm_orom_has_chunk(orom
, 16) ? "16k " : "",
1936 imsm_orom_has_chunk(orom
, 32) ? "32k " : "",
1937 imsm_orom_has_chunk(orom
, 64) ? "64k " : "",
1938 imsm_orom_has_chunk(orom
, 128) ? "128k " : "",
1939 imsm_orom_has_chunk(orom
, 256) ? "256k " : "",
1940 imsm_orom_has_chunk(orom
, 512) ? "512k " : "",
1941 imsm_orom_has_chunk(orom
, 1024*1) ? "1M " : "",
1942 imsm_orom_has_chunk(orom
, 1024*2) ? "2M " : "",
1943 imsm_orom_has_chunk(orom
, 1024*4) ? "4M " : "",
1944 imsm_orom_has_chunk(orom
, 1024*8) ? "8M " : "",
1945 imsm_orom_has_chunk(orom
, 1024*16) ? "16M " : "",
1946 imsm_orom_has_chunk(orom
, 1024*32) ? "32M " : "",
1947 imsm_orom_has_chunk(orom
, 1024*64) ? "64M " : "");
1948 printf("IMSM_2TB_VOLUMES=%s\n",(orom
->attr
& IMSM_OROM_ATTR_2TB
) ? "yes" : "no");
1949 printf("IMSM_2TB_DISKS=%s\n",(orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
) ? "yes" : "no");
1950 printf("IMSM_MAX_DISKS=%d\n",orom
->tds
);
1951 printf("IMSM_MAX_VOLUMES_PER_ARRAY=%d\n",orom
->vpa
);
1952 printf("IMSM_MAX_VOLUMES_PER_CONTROLLER=%d\n",orom
->vphba
);
1955 static int detail_platform_imsm(int verbose
, int enumerate_only
, char *controller_path
)
1957 /* There are two components to imsm platform support, the ahci SATA
1958 * controller and the option-rom. To find the SATA controller we
1959 * simply look in /sys/bus/pci/drivers/ahci to see if an ahci
1960 * controller with the Intel vendor id is present. This approach
1961 * allows mdadm to leverage the kernel's ahci detection logic, with the
1962 * caveat that if ahci.ko is not loaded mdadm will not be able to
1963 * detect platform raid capabilities. The option-rom resides in a
1964 * platform "Adapter ROM". We scan for its signature to retrieve the
1965 * platform capabilities. If raid support is disabled in the BIOS the
1966 * option-rom capability structure will not be available.
1968 struct sys_dev
*list
, *hba
;
1973 if (enumerate_only
) {
1974 if (check_env("IMSM_NO_PLATFORM"))
1976 list
= find_intel_devices();
1979 for (hba
= list
; hba
; hba
= hba
->next
) {
1980 if (find_imsm_capability(hba
)) {
1990 list
= find_intel_devices();
1993 pr_err("no active Intel(R) RAID controller found.\n");
1995 } else if (verbose
> 0)
1996 print_found_intel_controllers(list
);
1998 for (hba
= list
; hba
; hba
= hba
->next
) {
1999 if (controller_path
&& (compare_paths(hba
->path
, controller_path
) != 0))
2001 if (!find_imsm_capability(hba
)) {
2003 pr_err("imsm capabilities not found for controller: %s (type %s)\n",
2004 hba
->type
== SYS_DEV_VMD
? vmd_domain_to_controller(hba
, buf
) : hba
->path
,
2005 get_sys_dev_type(hba
->type
));
2011 if (controller_path
&& result
== 1) {
2012 pr_err("no active Intel(R) RAID controller found under %s\n",
2017 const struct orom_entry
*entry
;
2019 for (entry
= orom_entries
; entry
; entry
= entry
->next
) {
2020 if (entry
->type
== SYS_DEV_VMD
) {
2021 for (hba
= list
; hba
; hba
= hba
->next
) {
2022 if (hba
->type
== SYS_DEV_VMD
) {
2024 print_imsm_capability(&entry
->orom
);
2025 printf(" I/O Controller : %s (%s)\n",
2026 vmd_domain_to_controller(hba
, buf
), get_sys_dev_type(hba
->type
));
2027 print_vmd_attached_devs(hba
);
2034 print_imsm_capability(&entry
->orom
);
2035 if (entry
->type
== SYS_DEV_NVME
) {
2036 for (hba
= list
; hba
; hba
= hba
->next
) {
2037 if (hba
->type
== SYS_DEV_NVME
)
2038 printf(" NVMe Device : %s\n", hba
->path
);
2044 struct devid_list
*devid
;
2045 for (devid
= entry
->devid_list
; devid
; devid
= devid
->next
) {
2046 hba
= device_by_id(devid
->devid
);
2050 printf(" I/O Controller : %s (%s)\n",
2051 hba
->path
, get_sys_dev_type(hba
->type
));
2052 if (hba
->type
== SYS_DEV_SATA
) {
2053 host_base
= ahci_get_port_count(hba
->path
, &port_count
);
2054 if (ahci_enumerate_ports(hba
->path
, port_count
, host_base
, verbose
)) {
2056 pr_err("failed to enumerate ports on SATA controller at %s.\n", hba
->pci_id
);
2067 static int export_detail_platform_imsm(int verbose
, char *controller_path
)
2069 struct sys_dev
*list
, *hba
;
2072 list
= find_intel_devices();
2075 pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_INTEL_DEVICES\n");
2080 for (hba
= list
; hba
; hba
= hba
->next
) {
2081 if (controller_path
&& (compare_paths(hba
->path
,controller_path
) != 0))
2083 if (!find_imsm_capability(hba
) && verbose
> 0) {
2085 pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_IMSM_CAPABLE_DEVICE_UNDER_%s\n",
2086 hba
->type
== SYS_DEV_VMD
? vmd_domain_to_controller(hba
, buf
) : hba
->path
);
2092 const struct orom_entry
*entry
;
2094 for (entry
= orom_entries
; entry
; entry
= entry
->next
) {
2095 if (entry
->type
== SYS_DEV_VMD
) {
2096 for (hba
= list
; hba
; hba
= hba
->next
)
2097 print_imsm_capability_export(&entry
->orom
);
2100 print_imsm_capability_export(&entry
->orom
);
2108 static int match_home_imsm(struct supertype
*st
, char *homehost
)
2110 /* the imsm metadata format does not specify any host
2111 * identification information. We return -1 since we can never
2112 * confirm nor deny whether a given array is "meant" for this
2113 * host. We rely on compare_super and the 'family_num' fields to
2114 * exclude member disks that do not belong, and we rely on
2115 * mdadm.conf to specify the arrays that should be assembled.
2116 * Auto-assembly may still pick up "foreign" arrays.
2122 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
2124 /* The uuid returned here is used for:
2125 * uuid to put into bitmap file (Create, Grow)
2126 * uuid for backup header when saving critical section (Grow)
2127 * comparing uuids when re-adding a device into an array
2128 * In these cases the uuid required is that of the data-array,
2129 * not the device-set.
2130 * uuid to recognise same set when adding a missing device back
2131 * to an array. This is a uuid for the device-set.
2133 * For each of these we can make do with a truncated
2134 * or hashed uuid rather than the original, as long as
2136 * In each case the uuid required is that of the data-array,
2137 * not the device-set.
2139 /* imsm does not track uuid's so we synthesis one using sha1 on
2140 * - The signature (Which is constant for all imsm array, but no matter)
2141 * - the orig_family_num of the container
2142 * - the index number of the volume
2143 * - the 'serial' number of the volume.
2144 * Hopefully these are all constant.
2146 struct intel_super
*super
= st
->sb
;
2149 struct sha1_ctx ctx
;
2150 struct imsm_dev
*dev
= NULL
;
2153 /* some mdadm versions failed to set ->orig_family_num, in which
2154 * case fall back to ->family_num. orig_family_num will be
2155 * fixed up with the first metadata update.
2157 family_num
= super
->anchor
->orig_family_num
;
2158 if (family_num
== 0)
2159 family_num
= super
->anchor
->family_num
;
2160 sha1_init_ctx(&ctx
);
2161 sha1_process_bytes(super
->anchor
->sig
, MPB_SIG_LEN
, &ctx
);
2162 sha1_process_bytes(&family_num
, sizeof(__u32
), &ctx
);
2163 if (super
->current_vol
>= 0)
2164 dev
= get_imsm_dev(super
, super
->current_vol
);
2166 __u32 vol
= super
->current_vol
;
2167 sha1_process_bytes(&vol
, sizeof(vol
), &ctx
);
2168 sha1_process_bytes(dev
->volume
, MAX_RAID_SERIAL_LEN
, &ctx
);
2170 sha1_finish_ctx(&ctx
, buf
);
2171 memcpy(uuid
, buf
, 4*4);
2176 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
2178 __u8
*v
= get_imsm_version(mpb
);
2179 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
2180 char major
[] = { 0, 0, 0 };
2181 char minor
[] = { 0 ,0, 0 };
2182 char patch
[] = { 0, 0, 0 };
2183 char *ver_parse
[] = { major
, minor
, patch
};
2187 while (*v
!= '\0' && v
< end
) {
2188 if (*v
!= '.' && j
< 2)
2189 ver_parse
[i
][j
++] = *v
;
2197 *m
= strtol(minor
, NULL
, 0);
2198 *p
= strtol(patch
, NULL
, 0);
2202 static __u32
migr_strip_blocks_resync(struct imsm_dev
*dev
)
2204 /* migr_strip_size when repairing or initializing parity */
2205 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2206 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2208 switch (get_imsm_raid_level(map
)) {
2213 return 128*1024 >> 9;
2217 static __u32
migr_strip_blocks_rebuild(struct imsm_dev
*dev
)
2219 /* migr_strip_size when rebuilding a degraded disk, no idea why
2220 * this is different than migr_strip_size_resync(), but it's good
2223 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
2224 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2226 switch (get_imsm_raid_level(map
)) {
2229 if (map
->num_members
% map
->num_domains
== 0)
2230 return 128*1024 >> 9;
2234 return max((__u32
) 64*1024 >> 9, chunk
);
2236 return 128*1024 >> 9;
2240 static __u32
num_stripes_per_unit_resync(struct imsm_dev
*dev
)
2242 struct imsm_map
*lo
= get_imsm_map(dev
, MAP_0
);
2243 struct imsm_map
*hi
= get_imsm_map(dev
, MAP_1
);
2244 __u32 lo_chunk
= __le32_to_cpu(lo
->blocks_per_strip
);
2245 __u32 hi_chunk
= __le32_to_cpu(hi
->blocks_per_strip
);
2247 return max((__u32
) 1, hi_chunk
/ lo_chunk
);
2250 static __u32
num_stripes_per_unit_rebuild(struct imsm_dev
*dev
)
2252 struct imsm_map
*lo
= get_imsm_map(dev
, MAP_0
);
2253 int level
= get_imsm_raid_level(lo
);
2255 if (level
== 1 || level
== 10) {
2256 struct imsm_map
*hi
= get_imsm_map(dev
, MAP_1
);
2258 return hi
->num_domains
;
2260 return num_stripes_per_unit_resync(dev
);
2263 static __u8
imsm_num_data_members(struct imsm_dev
*dev
, int second_map
)
2265 /* named 'imsm_' because raid0, raid1 and raid10
2266 * counter-intuitively have the same number of data disks
2268 struct imsm_map
*map
= get_imsm_map(dev
, second_map
);
2270 switch (get_imsm_raid_level(map
)) {
2272 return map
->num_members
;
2276 return map
->num_members
/2;
2278 return map
->num_members
- 1;
2280 dprintf("unsupported raid level\n");
2285 static __u32
parity_segment_depth(struct imsm_dev
*dev
)
2287 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2288 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2290 switch(get_imsm_raid_level(map
)) {
2293 return chunk
* map
->num_domains
;
2295 return chunk
* map
->num_members
;
2301 static __u32
map_migr_block(struct imsm_dev
*dev
, __u32 block
)
2303 struct imsm_map
*map
= get_imsm_map(dev
, MAP_1
);
2304 __u32 chunk
= __le32_to_cpu(map
->blocks_per_strip
);
2305 __u32 strip
= block
/ chunk
;
2307 switch (get_imsm_raid_level(map
)) {
2310 __u32 vol_strip
= (strip
* map
->num_domains
) + 1;
2311 __u32 vol_stripe
= vol_strip
/ map
->num_members
;
2313 return vol_stripe
* chunk
+ block
% chunk
;
2315 __u32 stripe
= strip
/ (map
->num_members
- 1);
2317 return stripe
* chunk
+ block
% chunk
;
2324 static __u64
blocks_per_migr_unit(struct intel_super
*super
,
2325 struct imsm_dev
*dev
)
2327 /* calculate the conversion factor between per member 'blocks'
2328 * (md/{resync,rebuild}_start) and imsm migration units, return
2329 * 0 for the 'not migrating' and 'unsupported migration' cases
2331 if (!dev
->vol
.migr_state
)
2334 switch (migr_type(dev
)) {
2335 case MIGR_GEN_MIGR
: {
2336 struct migr_record
*migr_rec
= super
->migr_rec
;
2337 return __le32_to_cpu(migr_rec
->blocks_per_unit
);
2342 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2343 __u32 stripes_per_unit
;
2344 __u32 blocks_per_unit
;
2353 /* yes, this is really the translation of migr_units to
2354 * per-member blocks in the 'resync' case
2356 stripes_per_unit
= num_stripes_per_unit_resync(dev
);
2357 migr_chunk
= migr_strip_blocks_resync(dev
);
2358 disks
= imsm_num_data_members(dev
, MAP_0
);
2359 blocks_per_unit
= stripes_per_unit
* migr_chunk
* disks
;
2360 stripe
= __le16_to_cpu(map
->blocks_per_strip
) * disks
;
2361 segment
= blocks_per_unit
/ stripe
;
2362 block_rel
= blocks_per_unit
- segment
* stripe
;
2363 parity_depth
= parity_segment_depth(dev
);
2364 block_map
= map_migr_block(dev
, block_rel
);
2365 return block_map
+ parity_depth
* segment
;
2367 case MIGR_REBUILD
: {
2368 __u32 stripes_per_unit
;
2371 stripes_per_unit
= num_stripes_per_unit_rebuild(dev
);
2372 migr_chunk
= migr_strip_blocks_rebuild(dev
);
2373 return migr_chunk
* stripes_per_unit
;
2375 case MIGR_STATE_CHANGE
:
2381 static int imsm_level_to_layout(int level
)
2389 return ALGORITHM_LEFT_ASYMMETRIC
;
2396 /*******************************************************************************
2397 * Function: read_imsm_migr_rec
2398 * Description: Function reads imsm migration record from last sector of disk
2400 * fd : disk descriptor
2401 * super : metadata info
2405 ******************************************************************************/
2406 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
)
2409 unsigned long long dsize
;
2411 get_dev_size(fd
, NULL
, &dsize
);
2412 if (lseek64(fd
, dsize
- MIGR_REC_POSITION
, SEEK_SET
) < 0) {
2413 pr_err("Cannot seek to anchor block: %s\n",
2417 if (read(fd
, super
->migr_rec_buf
, MIGR_REC_BUF_SIZE
) !=
2418 MIGR_REC_BUF_SIZE
) {
2419 pr_err("Cannot read migr record block: %s\n",
2429 static struct imsm_dev
*imsm_get_device_during_migration(
2430 struct intel_super
*super
)
2433 struct intel_dev
*dv
;
2435 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
2436 if (is_gen_migration(dv
->dev
))
2442 /*******************************************************************************
2443 * Function: load_imsm_migr_rec
2444 * Description: Function reads imsm migration record (it is stored at the last
2447 * super : imsm internal array info
2448 * info : general array info
2452 * -2 : no migration in progress
2453 ******************************************************************************/
2454 static int load_imsm_migr_rec(struct intel_super
*super
, struct mdinfo
*info
)
2457 struct dl
*dl
= NULL
;
2461 struct imsm_dev
*dev
;
2462 struct imsm_map
*map
= NULL
;
2465 /* find map under migration */
2466 dev
= imsm_get_device_during_migration(super
);
2467 /* nothing to load,no migration in progress?
2471 map
= get_imsm_map(dev
, MAP_0
);
2474 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
2475 /* skip spare and failed disks
2477 if (sd
->disk
.raid_disk
< 0)
2479 /* read only from one of the first two slots */
2481 slot
= get_imsm_disk_slot(map
,
2482 sd
->disk
.raid_disk
);
2483 if ((map
== NULL
) || (slot
> 1) || (slot
< 0))
2486 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2487 fd
= dev_open(nm
, O_RDONLY
);
2493 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2494 /* skip spare and failed disks
2498 /* read only from one of the first two slots */
2500 slot
= get_imsm_disk_slot(map
, dl
->index
);
2501 if ((map
== NULL
) || (slot
> 1) || (slot
< 0))
2503 sprintf(nm
, "%d:%d", dl
->major
, dl
->minor
);
2504 fd
= dev_open(nm
, O_RDONLY
);
2511 retval
= read_imsm_migr_rec(fd
, super
);
2520 /*******************************************************************************
2521 * function: imsm_create_metadata_checkpoint_update
2522 * Description: It creates update for checkpoint change.
2524 * super : imsm internal array info
2525 * u : pointer to prepared update
2528 * If length is equal to 0, input pointer u contains no update
2529 ******************************************************************************/
2530 static int imsm_create_metadata_checkpoint_update(
2531 struct intel_super
*super
,
2532 struct imsm_update_general_migration_checkpoint
**u
)
2535 int update_memory_size
= 0;
2537 dprintf("(enter)\n");
2543 /* size of all update data without anchor */
2544 update_memory_size
=
2545 sizeof(struct imsm_update_general_migration_checkpoint
);
2547 *u
= xcalloc(1, update_memory_size
);
2549 dprintf("error: cannot get memory\n");
2552 (*u
)->type
= update_general_migration_checkpoint
;
2553 (*u
)->curr_migr_unit
= __le32_to_cpu(super
->migr_rec
->curr_migr_unit
);
2554 dprintf("prepared for %u\n", (*u
)->curr_migr_unit
);
2556 return update_memory_size
;
2559 static void imsm_update_metadata_locally(struct supertype
*st
,
2560 void *buf
, int len
);
2562 /*******************************************************************************
2563 * Function: write_imsm_migr_rec
2564 * Description: Function writes imsm migration record
2565 * (at the last sector of disk)
2567 * super : imsm internal array info
2571 ******************************************************************************/
2572 static int write_imsm_migr_rec(struct supertype
*st
)
2574 struct intel_super
*super
= st
->sb
;
2575 unsigned long long dsize
;
2581 struct imsm_update_general_migration_checkpoint
*u
;
2582 struct imsm_dev
*dev
;
2583 struct imsm_map
*map
= NULL
;
2585 /* find map under migration */
2586 dev
= imsm_get_device_during_migration(super
);
2587 /* if no migration, write buffer anyway to clear migr_record
2588 * on disk based on first available device
2591 dev
= get_imsm_dev(super
, super
->current_vol
< 0 ? 0 :
2592 super
->current_vol
);
2594 map
= get_imsm_map(dev
, MAP_0
);
2596 for (sd
= super
->disks
; sd
; sd
= sd
->next
) {
2599 /* skip failed and spare devices */
2602 /* write to 2 first slots only */
2604 slot
= get_imsm_disk_slot(map
, sd
->index
);
2605 if ((map
== NULL
) || (slot
> 1) || (slot
< 0))
2608 sprintf(nm
, "%d:%d", sd
->major
, sd
->minor
);
2609 fd
= dev_open(nm
, O_RDWR
);
2612 get_dev_size(fd
, NULL
, &dsize
);
2613 if (lseek64(fd
, dsize
- MIGR_REC_POSITION
, SEEK_SET
) < 0) {
2614 pr_err("Cannot seek to anchor block: %s\n",
2618 if (write(fd
, super
->migr_rec_buf
, MIGR_REC_BUF_SIZE
) !=
2619 MIGR_REC_BUF_SIZE
) {
2620 pr_err("Cannot write migr record block: %s\n",
2627 /* update checkpoint information in metadata */
2628 len
= imsm_create_metadata_checkpoint_update(super
, &u
);
2631 dprintf("imsm: Cannot prepare update\n");
2634 /* update metadata locally */
2635 imsm_update_metadata_locally(st
, u
, len
);
2636 /* and possibly remotely */
2637 if (st
->update_tail
) {
2638 append_metadata_update(st
, u
, len
);
2639 /* during reshape we do all work inside metadata handler
2640 * manage_reshape(), so metadata update has to be triggered
2643 flush_metadata_updates(st
);
2644 st
->update_tail
= &st
->updates
;
2654 #endif /* MDASSEMBLE */
2656 /* spare/missing disks activations are not allowe when
2657 * array/container performs reshape operation, because
2658 * all arrays in container works on the same disks set
2660 int imsm_reshape_blocks_arrays_changes(struct intel_super
*super
)
2663 struct intel_dev
*i_dev
;
2664 struct imsm_dev
*dev
;
2666 /* check whole container
2668 for (i_dev
= super
->devlist
; i_dev
; i_dev
= i_dev
->next
) {
2670 if (is_gen_migration(dev
)) {
2671 /* No repair during any migration in container
2679 static unsigned long long imsm_component_size_aligment_check(int level
,
2681 unsigned long long component_size
)
2683 unsigned int component_size_alligment
;
2685 /* check component size aligment
2687 component_size_alligment
= component_size
% (chunk_size
/512);
2689 dprintf("(Level: %i, chunk_size = %i, component_size = %llu), component_size_alligment = %u\n",
2690 level
, chunk_size
, component_size
,
2691 component_size_alligment
);
2693 if (component_size_alligment
&& (level
!= 1) && (level
!= UnSet
)) {
2694 dprintf("imsm: reported component size alligned from %llu ",
2696 component_size
-= component_size_alligment
;
2697 dprintf_cont("to %llu (%i).\n",
2698 component_size
, component_size_alligment
);
2701 return component_size
;
2704 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
, char *dmap
)
2706 struct intel_super
*super
= st
->sb
;
2707 struct migr_record
*migr_rec
= super
->migr_rec
;
2708 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
2709 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
2710 struct imsm_map
*prev_map
= get_imsm_map(dev
, MAP_1
);
2711 struct imsm_map
*map_to_analyse
= map
;
2713 int map_disks
= info
->array
.raid_disks
;
2715 memset(info
, 0, sizeof(*info
));
2717 map_to_analyse
= prev_map
;
2719 dl
= super
->current_disk
;
2721 info
->container_member
= super
->current_vol
;
2722 info
->array
.raid_disks
= map
->num_members
;
2723 info
->array
.level
= get_imsm_raid_level(map_to_analyse
);
2724 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
2725 info
->array
.md_minor
= -1;
2726 info
->array
.ctime
= 0;
2727 info
->array
.utime
= 0;
2728 info
->array
.chunk_size
=
2729 __le16_to_cpu(map_to_analyse
->blocks_per_strip
) << 9;
2730 info
->array
.state
= !dev
->vol
.dirty
;
2731 info
->custom_array_size
= __le32_to_cpu(dev
->size_high
);
2732 info
->custom_array_size
<<= 32;
2733 info
->custom_array_size
|= __le32_to_cpu(dev
->size_low
);
2734 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
2736 if (is_gen_migration(dev
)) {
2737 info
->reshape_active
= 1;
2738 info
->new_level
= get_imsm_raid_level(map
);
2739 info
->new_layout
= imsm_level_to_layout(info
->new_level
);
2740 info
->new_chunk
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
2741 info
->delta_disks
= map
->num_members
- prev_map
->num_members
;
2742 if (info
->delta_disks
) {
2743 /* this needs to be applied to every array
2746 info
->reshape_active
= CONTAINER_RESHAPE
;
2748 /* We shape information that we give to md might have to be
2749 * modify to cope with md's requirement for reshaping arrays.
2750 * For example, when reshaping a RAID0, md requires it to be
2751 * presented as a degraded RAID4.
2752 * Also if a RAID0 is migrating to a RAID5 we need to specify
2753 * the array as already being RAID5, but the 'before' layout
2754 * is a RAID4-like layout.
2756 switch (info
->array
.level
) {
2758 switch(info
->new_level
) {
2760 /* conversion is happening as RAID4 */
2761 info
->array
.level
= 4;
2762 info
->array
.raid_disks
+= 1;
2765 /* conversion is happening as RAID5 */
2766 info
->array
.level
= 5;
2767 info
->array
.layout
= ALGORITHM_PARITY_N
;
2768 info
->delta_disks
-= 1;
2771 /* FIXME error message */
2772 info
->array
.level
= UnSet
;
2778 info
->new_level
= UnSet
;
2779 info
->new_layout
= UnSet
;
2780 info
->new_chunk
= info
->array
.chunk_size
;
2781 info
->delta_disks
= 0;
2785 info
->disk
.major
= dl
->major
;
2786 info
->disk
.minor
= dl
->minor
;
2787 info
->disk
.number
= dl
->index
;
2788 info
->disk
.raid_disk
= get_imsm_disk_slot(map_to_analyse
,
2792 info
->data_offset
= pba_of_lba0(map_to_analyse
);
2793 info
->component_size
= blocks_per_member(map_to_analyse
);
2795 info
->component_size
= imsm_component_size_aligment_check(
2797 info
->array
.chunk_size
,
2798 info
->component_size
);
2800 memset(info
->uuid
, 0, sizeof(info
->uuid
));
2801 info
->recovery_start
= MaxSector
;
2803 info
->reshape_progress
= 0;
2804 info
->resync_start
= MaxSector
;
2805 if ((map_to_analyse
->map_state
== IMSM_T_STATE_UNINITIALIZED
||
2807 imsm_reshape_blocks_arrays_changes(super
) == 0) {
2808 info
->resync_start
= 0;
2810 if (dev
->vol
.migr_state
) {
2811 switch (migr_type(dev
)) {
2814 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
2816 __u64 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
2818 info
->resync_start
= blocks_per_unit
* units
;
2821 case MIGR_GEN_MIGR
: {
2822 __u64 blocks_per_unit
= blocks_per_migr_unit(super
,
2824 __u64 units
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
2825 unsigned long long array_blocks
;
2828 if (__le32_to_cpu(migr_rec
->ascending_migr
) &&
2830 (__le32_to_cpu(migr_rec
->num_migr_units
)-1)) &&
2831 (super
->migr_rec
->rec_status
==
2832 __cpu_to_le32(UNIT_SRC_IN_CP_AREA
)))
2835 info
->reshape_progress
= blocks_per_unit
* units
;
2837 dprintf("IMSM: General Migration checkpoint : %llu (%llu) -> read reshape progress : %llu\n",
2838 (unsigned long long)units
,
2839 (unsigned long long)blocks_per_unit
,
2840 info
->reshape_progress
);
2842 used_disks
= imsm_num_data_members(dev
, MAP_1
);
2843 if (used_disks
> 0) {
2844 array_blocks
= blocks_per_member(map
) *
2846 /* round array size down to closest MB
2848 info
->custom_array_size
= (array_blocks
2849 >> SECT_PER_MB_SHIFT
)
2850 << SECT_PER_MB_SHIFT
;
2854 /* we could emulate the checkpointing of
2855 * 'sync_action=check' migrations, but for now
2856 * we just immediately complete them
2859 /* this is handled by container_content_imsm() */
2860 case MIGR_STATE_CHANGE
:
2861 /* FIXME handle other migrations */
2863 /* we are not dirty, so... */
2864 info
->resync_start
= MaxSector
;
2868 strncpy(info
->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
2869 info
->name
[MAX_RAID_SERIAL_LEN
] = 0;
2871 info
->array
.major_version
= -1;
2872 info
->array
.minor_version
= -2;
2873 sprintf(info
->text_version
, "/%s/%d", st
->container_devnm
, info
->container_member
);
2874 info
->safe_mode_delay
= 4000; /* 4 secs like the Matrix driver */
2875 uuid_from_super_imsm(st
, info
->uuid
);
2879 for (i
=0; i
<map_disks
; i
++) {
2881 if (i
< info
->array
.raid_disks
) {
2882 struct imsm_disk
*dsk
;
2883 j
= get_imsm_disk_idx(dev
, i
, MAP_X
);
2884 dsk
= get_imsm_disk(super
, j
);
2885 if (dsk
&& (dsk
->status
& CONFIGURED_DISK
))
2892 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
,
2893 int failed
, int look_in_map
);
2895 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
,
2899 static void manage_second_map(struct intel_super
*super
, struct imsm_dev
*dev
)
2901 if (is_gen_migration(dev
)) {
2904 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
2906 failed
= imsm_count_failed(super
, dev
, MAP_1
);
2907 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_1
);
2908 if (map2
->map_state
!= map_state
) {
2909 map2
->map_state
= map_state
;
2910 super
->updates_pending
++;
2916 static struct imsm_disk
*get_imsm_missing(struct intel_super
*super
, __u8 index
)
2920 for (d
= super
->missing
; d
; d
= d
->next
)
2921 if (d
->index
== index
)
2926 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
, char *map
)
2928 struct intel_super
*super
= st
->sb
;
2929 struct imsm_disk
*disk
;
2930 int map_disks
= info
->array
.raid_disks
;
2931 int max_enough
= -1;
2933 struct imsm_super
*mpb
;
2935 if (super
->current_vol
>= 0) {
2936 getinfo_super_imsm_volume(st
, info
, map
);
2939 memset(info
, 0, sizeof(*info
));
2941 /* Set raid_disks to zero so that Assemble will always pull in valid
2944 info
->array
.raid_disks
= 0;
2945 info
->array
.level
= LEVEL_CONTAINER
;
2946 info
->array
.layout
= 0;
2947 info
->array
.md_minor
= -1;
2948 info
->array
.ctime
= 0; /* N/A for imsm */
2949 info
->array
.utime
= 0;
2950 info
->array
.chunk_size
= 0;
2952 info
->disk
.major
= 0;
2953 info
->disk
.minor
= 0;
2954 info
->disk
.raid_disk
= -1;
2955 info
->reshape_active
= 0;
2956 info
->array
.major_version
= -1;
2957 info
->array
.minor_version
= -2;
2958 strcpy(info
->text_version
, "imsm");
2959 info
->safe_mode_delay
= 0;
2960 info
->disk
.number
= -1;
2961 info
->disk
.state
= 0;
2963 info
->recovery_start
= MaxSector
;
2964 info
->recovery_blocked
= imsm_reshape_blocks_arrays_changes(st
->sb
);
2966 /* do we have the all the insync disks that we expect? */
2967 mpb
= super
->anchor
;
2969 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
2970 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
2971 int failed
, enough
, j
, missing
= 0;
2972 struct imsm_map
*map
;
2975 failed
= imsm_count_failed(super
, dev
, MAP_0
);
2976 state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
2977 map
= get_imsm_map(dev
, MAP_0
);
2979 /* any newly missing disks?
2980 * (catches single-degraded vs double-degraded)
2982 for (j
= 0; j
< map
->num_members
; j
++) {
2983 __u32 ord
= get_imsm_ord_tbl_ent(dev
, j
, MAP_0
);
2984 __u32 idx
= ord_to_idx(ord
);
2986 if (!(ord
& IMSM_ORD_REBUILD
) &&
2987 get_imsm_missing(super
, idx
)) {
2993 if (state
== IMSM_T_STATE_FAILED
)
2995 else if (state
== IMSM_T_STATE_DEGRADED
&&
2996 (state
!= map
->map_state
|| missing
))
2998 else /* we're normal, or already degraded */
3000 if (is_gen_migration(dev
) && missing
) {
3001 /* during general migration we need all disks
3002 * that process is running on.
3003 * No new missing disk is allowed.
3007 /* no more checks necessary
3011 /* in the missing/failed disk case check to see
3012 * if at least one array is runnable
3014 max_enough
= max(max_enough
, enough
);
3016 dprintf("enough: %d\n", max_enough
);
3017 info
->container_enough
= max_enough
;
3020 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
3022 disk
= &super
->disks
->disk
;
3023 info
->data_offset
= total_blocks(&super
->disks
->disk
) - reserved
;
3024 info
->component_size
= reserved
;
3025 info
->disk
.state
= is_configured(disk
) ? (1 << MD_DISK_ACTIVE
) : 0;
3026 /* we don't change info->disk.raid_disk here because
3027 * this state will be finalized in mdmon after we have
3028 * found the 'most fresh' version of the metadata
3030 info
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
3031 info
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
3034 /* only call uuid_from_super_imsm when this disk is part of a populated container,
3035 * ->compare_super may have updated the 'num_raid_devs' field for spares
3037 if (info
->disk
.state
& (1 << MD_DISK_SYNC
) || super
->anchor
->num_raid_devs
)
3038 uuid_from_super_imsm(st
, info
->uuid
);
3040 memcpy(info
->uuid
, uuid_zero
, sizeof(uuid_zero
));
3042 /* I don't know how to compute 'map' on imsm, so use safe default */
3045 for (i
= 0; i
< map_disks
; i
++)
3051 /* allocates memory and fills disk in mdinfo structure
3052 * for each disk in array */
3053 struct mdinfo
*getinfo_super_disks_imsm(struct supertype
*st
)
3055 struct mdinfo
*mddev
= NULL
;
3056 struct intel_super
*super
= st
->sb
;
3057 struct imsm_disk
*disk
;
3060 if (!super
|| !super
->disks
)
3063 mddev
= xcalloc(1, sizeof(*mddev
));
3067 tmp
= xcalloc(1, sizeof(*tmp
));
3069 tmp
->next
= mddev
->devs
;
3071 tmp
->disk
.number
= count
++;
3072 tmp
->disk
.major
= dl
->major
;
3073 tmp
->disk
.minor
= dl
->minor
;
3074 tmp
->disk
.state
= is_configured(disk
) ?
3075 (1 << MD_DISK_ACTIVE
) : 0;
3076 tmp
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
3077 tmp
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
3078 tmp
->disk
.raid_disk
= -1;
3084 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
3085 char *update
, char *devname
, int verbose
,
3086 int uuid_set
, char *homehost
)
3088 /* For 'assemble' and 'force' we need to return non-zero if any
3089 * change was made. For others, the return value is ignored.
3090 * Update options are:
3091 * force-one : This device looks a bit old but needs to be included,
3092 * update age info appropriately.
3093 * assemble: clear any 'faulty' flag to allow this device to
3095 * force-array: Array is degraded but being forced, mark it clean
3096 * if that will be needed to assemble it.
3098 * newdev: not used ????
3099 * grow: Array has gained a new device - this is currently for
3101 * resync: mark as dirty so a resync will happen.
3102 * name: update the name - preserving the homehost
3103 * uuid: Change the uuid of the array to match watch is given
3105 * Following are not relevant for this imsm:
3106 * sparc2.2 : update from old dodgey metadata
3107 * super-minor: change the preferred_minor number
3108 * summaries: update redundant counters.
3109 * homehost: update the recorded homehost
3110 * _reshape_progress: record new reshape_progress position.
3113 struct intel_super
*super
= st
->sb
;
3114 struct imsm_super
*mpb
;
3116 /* we can only update container info */
3117 if (!super
|| super
->current_vol
>= 0 || !super
->anchor
)
3120 mpb
= super
->anchor
;
3122 if (strcmp(update
, "uuid") == 0) {
3123 /* We take this to mean that the family_num should be updated.
3124 * However that is much smaller than the uuid so we cannot really
3125 * allow an explicit uuid to be given. And it is hard to reliably
3127 * So if !uuid_set we know the current uuid is random and just used
3128 * the first 'int' and copy it to the other 3 positions.
3129 * Otherwise we require the 4 'int's to be the same as would be the
3130 * case if we are using a random uuid. So an explicit uuid will be
3131 * accepted as long as all for ints are the same... which shouldn't hurt
3134 info
->uuid
[1] = info
->uuid
[2] = info
->uuid
[3] = info
->uuid
[0];
3137 if (info
->uuid
[0] != info
->uuid
[1] ||
3138 info
->uuid
[1] != info
->uuid
[2] ||
3139 info
->uuid
[2] != info
->uuid
[3])
3145 mpb
->orig_family_num
= info
->uuid
[0];
3146 } else if (strcmp(update
, "assemble") == 0)
3151 /* successful update? recompute checksum */
3153 mpb
->check_sum
= __le32_to_cpu(__gen_imsm_checksum(mpb
));
3158 static size_t disks_to_mpb_size(int disks
)
3162 size
= sizeof(struct imsm_super
);
3163 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
3164 size
+= 2 * sizeof(struct imsm_dev
);
3165 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
3166 size
+= (4 - 2) * sizeof(struct imsm_map
);
3167 /* 4 possible disk_ord_tbl's */
3168 size
+= 4 * (disks
- 1) * sizeof(__u32
);
3173 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
,
3174 unsigned long long data_offset
)
3176 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
3179 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
3182 static void free_devlist(struct intel_super
*super
)
3184 struct intel_dev
*dv
;
3186 while (super
->devlist
) {
3187 dv
= super
->devlist
->next
;
3188 free(super
->devlist
->dev
);
3189 free(super
->devlist
);
3190 super
->devlist
= dv
;
3194 static void imsm_copy_dev(struct imsm_dev
*dest
, struct imsm_dev
*src
)
3196 memcpy(dest
, src
, sizeof_imsm_dev(src
, 0));
3199 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
3203 * 0 same, or first was empty, and second was copied
3204 * 1 second had wrong number
3206 * 3 wrong other info
3208 struct intel_super
*first
= st
->sb
;
3209 struct intel_super
*sec
= tst
->sb
;
3216 /* in platform dependent environment test if the disks
3217 * use the same Intel hba
3218 * If not on Intel hba at all, allow anything.
3220 if (!check_env("IMSM_NO_PLATFORM") && first
->hba
&& sec
->hba
) {
3221 if (first
->hba
->type
!= sec
->hba
->type
) {
3223 "HBAs of devices do not match %s != %s\n",
3224 get_sys_dev_type(first
->hba
->type
),
3225 get_sys_dev_type(sec
->hba
->type
));
3228 if (first
->orom
!= sec
->orom
) {
3230 "HBAs of devices do not match %s != %s\n",
3231 first
->hba
->pci_id
, sec
->hba
->pci_id
);
3236 /* if an anchor does not have num_raid_devs set then it is a free
3239 if (first
->anchor
->num_raid_devs
> 0 &&
3240 sec
->anchor
->num_raid_devs
> 0) {
3241 /* Determine if these disks might ever have been
3242 * related. Further disambiguation can only take place
3243 * in load_super_imsm_all
3245 __u32 first_family
= first
->anchor
->orig_family_num
;
3246 __u32 sec_family
= sec
->anchor
->orig_family_num
;
3248 if (memcmp(first
->anchor
->sig
, sec
->anchor
->sig
,
3249 MAX_SIGNATURE_LENGTH
) != 0)
3252 if (first_family
== 0)
3253 first_family
= first
->anchor
->family_num
;
3254 if (sec_family
== 0)
3255 sec_family
= sec
->anchor
->family_num
;
3257 if (first_family
!= sec_family
)
3262 /* if 'first' is a spare promote it to a populated mpb with sec's
3265 if (first
->anchor
->num_raid_devs
== 0 &&
3266 sec
->anchor
->num_raid_devs
> 0) {
3268 struct intel_dev
*dv
;
3269 struct imsm_dev
*dev
;
3271 /* we need to copy raid device info from sec if an allocation
3272 * fails here we don't associate the spare
3274 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++) {
3275 dv
= xmalloc(sizeof(*dv
));
3276 dev
= xmalloc(sizeof_imsm_dev(get_imsm_dev(sec
, i
), 1));
3279 dv
->next
= first
->devlist
;
3280 first
->devlist
= dv
;
3282 if (i
< sec
->anchor
->num_raid_devs
) {
3283 /* allocation failure */
3284 free_devlist(first
);
3285 pr_err("imsm: failed to associate spare\n");
3288 first
->anchor
->num_raid_devs
= sec
->anchor
->num_raid_devs
;
3289 first
->anchor
->orig_family_num
= sec
->anchor
->orig_family_num
;
3290 first
->anchor
->family_num
= sec
->anchor
->family_num
;
3291 memcpy(first
->anchor
->sig
, sec
->anchor
->sig
, MAX_SIGNATURE_LENGTH
);
3292 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++)
3293 imsm_copy_dev(get_imsm_dev(first
, i
), get_imsm_dev(sec
, i
));
3299 static void fd2devname(int fd
, char *name
)
3303 char dname
[PATH_MAX
];
3308 if (fstat(fd
, &st
) != 0)
3310 sprintf(path
, "/sys/dev/block/%d:%d",
3311 major(st
.st_rdev
), minor(st
.st_rdev
));
3313 rv
= readlink(path
, dname
, sizeof(dname
)-1);
3318 nm
= strrchr(dname
, '/');
3321 snprintf(name
, MAX_RAID_SERIAL_LEN
, "/dev/%s", nm
);
3325 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
3327 static int imsm_read_serial(int fd
, char *devname
,
3328 __u8 serial
[MAX_RAID_SERIAL_LEN
])
3330 unsigned char scsi_serial
[255];
3339 memset(scsi_serial
, 0, sizeof(scsi_serial
));
3341 rv
= scsi_get_serial(fd
, scsi_serial
, sizeof(scsi_serial
));
3343 if (rv
&& check_env("IMSM_DEVNAME_AS_SERIAL")) {
3344 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
3345 fd2devname(fd
, (char *) serial
);
3351 pr_err("Failed to retrieve serial for %s\n",
3356 rsp_len
= scsi_serial
[3];
3359 pr_err("Failed to retrieve serial for %s\n",
3363 rsp_buf
= (char *) &scsi_serial
[4];
3365 /* trim all whitespace and non-printable characters and convert
3368 for (i
= 0, dest
= rsp_buf
; i
< rsp_len
; i
++) {
3371 /* ':' is reserved for use in placeholder serial
3372 * numbers for missing disks
3380 len
= dest
- rsp_buf
;
3383 /* truncate leading characters */
3384 if (len
> MAX_RAID_SERIAL_LEN
) {
3385 dest
+= len
- MAX_RAID_SERIAL_LEN
;
3386 len
= MAX_RAID_SERIAL_LEN
;
3389 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
3390 memcpy(serial
, dest
, len
);
3395 static int serialcmp(__u8
*s1
, __u8
*s2
)
3397 return strncmp((char *) s1
, (char *) s2
, MAX_RAID_SERIAL_LEN
);
3400 static void serialcpy(__u8
*dest
, __u8
*src
)
3402 strncpy((char *) dest
, (char *) src
, MAX_RAID_SERIAL_LEN
);
3405 static struct dl
*serial_to_dl(__u8
*serial
, struct intel_super
*super
)
3409 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
3410 if (serialcmp(dl
->serial
, serial
) == 0)
3416 static struct imsm_disk
*
3417 __serial_to_disk(__u8
*serial
, struct imsm_super
*mpb
, int *idx
)
3421 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3422 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
3424 if (serialcmp(disk
->serial
, serial
) == 0) {
3435 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
3437 struct imsm_disk
*disk
;
3442 __u8 serial
[MAX_RAID_SERIAL_LEN
];
3444 rv
= imsm_read_serial(fd
, devname
, serial
);
3449 dl
= xcalloc(1, sizeof(*dl
));
3452 dl
->major
= major(stb
.st_rdev
);
3453 dl
->minor
= minor(stb
.st_rdev
);
3454 dl
->next
= super
->disks
;
3455 dl
->fd
= keep_fd
? fd
: -1;
3456 assert(super
->disks
== NULL
);
3458 serialcpy(dl
->serial
, serial
);
3461 fd2devname(fd
, name
);
3463 dl
->devname
= xstrdup(devname
);
3465 dl
->devname
= xstrdup(name
);
3467 /* look up this disk's index in the current anchor */
3468 disk
= __serial_to_disk(dl
->serial
, super
->anchor
, &dl
->index
);
3471 /* only set index on disks that are a member of a
3472 * populated contianer, i.e. one with raid_devs
3474 if (is_failed(&dl
->disk
))
3476 else if (is_spare(&dl
->disk
))
3484 /* When migrating map0 contains the 'destination' state while map1
3485 * contains the current state. When not migrating map0 contains the
3486 * current state. This routine assumes that map[0].map_state is set to
3487 * the current array state before being called.
3489 * Migration is indicated by one of the following states
3490 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
3491 * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal
3492 * map1state=unitialized)
3493 * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal
3495 * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal
3496 * map1state=degraded)
3497 * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal
3500 static void migrate(struct imsm_dev
*dev
, struct intel_super
*super
,
3501 __u8 to_state
, int migr_type
)
3503 struct imsm_map
*dest
;
3504 struct imsm_map
*src
= get_imsm_map(dev
, MAP_0
);
3506 dev
->vol
.migr_state
= 1;
3507 set_migr_type(dev
, migr_type
);
3508 dev
->vol
.curr_migr_unit
= 0;
3509 dest
= get_imsm_map(dev
, MAP_1
);
3511 /* duplicate and then set the target end state in map[0] */
3512 memcpy(dest
, src
, sizeof_imsm_map(src
));
3513 if ((migr_type
== MIGR_REBUILD
) ||
3514 (migr_type
== MIGR_GEN_MIGR
)) {
3518 for (i
= 0; i
< src
->num_members
; i
++) {
3519 ord
= __le32_to_cpu(src
->disk_ord_tbl
[i
]);
3520 set_imsm_ord_tbl_ent(src
, i
, ord_to_idx(ord
));
3524 if (migr_type
== MIGR_GEN_MIGR
)
3525 /* Clear migration record */
3526 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
3528 src
->map_state
= to_state
;
3531 static void end_migration(struct imsm_dev
*dev
, struct intel_super
*super
,
3534 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
3535 struct imsm_map
*prev
= get_imsm_map(dev
, dev
->vol
.migr_state
== 0 ?
3539 /* merge any IMSM_ORD_REBUILD bits that were not successfully
3540 * completed in the last migration.
3542 * FIXME add support for raid-level-migration
3544 if ((map_state
!= map
->map_state
) && (is_gen_migration(dev
) == 0) &&
3545 (prev
->map_state
!= IMSM_T_STATE_UNINITIALIZED
)) {
3546 /* when final map state is other than expected
3547 * merge maps (not for migration)
3551 for (i
= 0; i
< prev
->num_members
; i
++)
3552 for (j
= 0; j
< map
->num_members
; j
++)
3553 /* during online capacity expansion
3554 * disks position can be changed
3555 * if takeover is used
3557 if (ord_to_idx(map
->disk_ord_tbl
[j
]) ==
3558 ord_to_idx(prev
->disk_ord_tbl
[i
])) {
3559 map
->disk_ord_tbl
[j
] |=
3560 prev
->disk_ord_tbl
[i
];
3563 failed
= imsm_count_failed(super
, dev
, MAP_0
);
3564 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
3567 dev
->vol
.migr_state
= 0;
3568 set_migr_type(dev
, 0);
3569 dev
->vol
.curr_migr_unit
= 0;
3570 map
->map_state
= map_state
;
3574 static int parse_raid_devices(struct intel_super
*super
)
3577 struct imsm_dev
*dev_new
;
3578 size_t len
, len_migr
;
3580 size_t space_needed
= 0;
3581 struct imsm_super
*mpb
= super
->anchor
;
3583 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
3584 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
3585 struct intel_dev
*dv
;
3587 len
= sizeof_imsm_dev(dev_iter
, 0);
3588 len_migr
= sizeof_imsm_dev(dev_iter
, 1);
3590 space_needed
+= len_migr
- len
;
3592 dv
= xmalloc(sizeof(*dv
));
3593 if (max_len
< len_migr
)
3595 if (max_len
> len_migr
)
3596 space_needed
+= max_len
- len_migr
;
3597 dev_new
= xmalloc(max_len
);
3598 imsm_copy_dev(dev_new
, dev_iter
);
3601 dv
->next
= super
->devlist
;
3602 super
->devlist
= dv
;
3605 /* ensure that super->buf is large enough when all raid devices
3608 if (__le32_to_cpu(mpb
->mpb_size
) + space_needed
> super
->len
) {
3611 len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + space_needed
, 512);
3612 if (posix_memalign(&buf
, 512, len
) != 0)
3615 memcpy(buf
, super
->buf
, super
->len
);
3616 memset(buf
+ super
->len
, 0, len
- super
->len
);
3625 /* retrieve a pointer to the bbm log which starts after all raid devices */
3626 struct bbm_log
*__get_imsm_bbm_log(struct imsm_super
*mpb
)
3630 if (__le32_to_cpu(mpb
->bbm_log_size
)) {
3632 ptr
+= mpb
->mpb_size
- __le32_to_cpu(mpb
->bbm_log_size
);
3638 /*******************************************************************************
3639 * Function: check_mpb_migr_compatibility
3640 * Description: Function checks for unsupported migration features:
3641 * - migration optimization area (pba_of_lba0)
3642 * - descending reshape (ascending_migr)
3644 * super : imsm metadata information
3646 * 0 : migration is compatible
3647 * -1 : migration is not compatible
3648 ******************************************************************************/
3649 int check_mpb_migr_compatibility(struct intel_super
*super
)
3651 struct imsm_map
*map0
, *map1
;
3652 struct migr_record
*migr_rec
= super
->migr_rec
;
3655 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
3656 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
3659 dev_iter
->vol
.migr_state
== 1 &&
3660 dev_iter
->vol
.migr_type
== MIGR_GEN_MIGR
) {
3661 /* This device is migrating */
3662 map0
= get_imsm_map(dev_iter
, MAP_0
);
3663 map1
= get_imsm_map(dev_iter
, MAP_1
);
3664 if (pba_of_lba0(map0
) != pba_of_lba0(map1
))
3665 /* migration optimization area was used */
3667 if (migr_rec
->ascending_migr
== 0
3668 && migr_rec
->dest_depth_per_unit
> 0)
3669 /* descending reshape not supported yet */
3676 static void __free_imsm(struct intel_super
*super
, int free_disks
);
3678 /* load_imsm_mpb - read matrix metadata
3679 * allocates super->mpb to be freed by free_imsm
3681 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
3683 unsigned long long dsize
;
3684 unsigned long long sectors
;
3686 struct imsm_super
*anchor
;
3689 get_dev_size(fd
, NULL
, &dsize
);
3692 pr_err("%s: device to small for imsm\n",
3697 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
3699 pr_err("Cannot seek to anchor block on %s: %s\n",
3700 devname
, strerror(errno
));
3704 if (posix_memalign((void**)&anchor
, 512, 512) != 0) {
3706 pr_err("Failed to allocate imsm anchor buffer on %s\n", devname
);
3709 if (read(fd
, anchor
, 512) != 512) {
3711 pr_err("Cannot read anchor block on %s: %s\n",
3712 devname
, strerror(errno
));
3717 if (strncmp((char *) anchor
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
3719 pr_err("no IMSM anchor on %s\n", devname
);
3724 __free_imsm(super
, 0);
3725 /* reload capability and hba */
3727 /* capability and hba must be updated with new super allocation */
3728 find_intel_hba_capability(fd
, super
, devname
);
3729 super
->len
= ROUND_UP(anchor
->mpb_size
, 512);
3730 if (posix_memalign(&super
->buf
, 512, super
->len
) != 0) {
3732 pr_err("unable to allocate %zu byte mpb buffer\n",
3737 memcpy(super
->buf
, anchor
, 512);
3739 sectors
= mpb_sectors(anchor
) - 1;
3742 if (posix_memalign(&super
->migr_rec_buf
, 512, MIGR_REC_BUF_SIZE
) != 0) {
3743 pr_err("could not allocate migr_rec buffer\n");
3747 super
->clean_migration_record_by_mdmon
= 0;
3750 check_sum
= __gen_imsm_checksum(super
->anchor
);
3751 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
3753 pr_err("IMSM checksum %x != %x on %s\n",
3755 __le32_to_cpu(super
->anchor
->check_sum
),
3763 /* read the extended mpb */
3764 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
3766 pr_err("Cannot seek to extended mpb on %s: %s\n",
3767 devname
, strerror(errno
));
3771 if ((unsigned)read(fd
, super
->buf
+ 512, super
->len
- 512) != super
->len
- 512) {
3773 pr_err("Cannot read extended mpb on %s: %s\n",
3774 devname
, strerror(errno
));
3778 check_sum
= __gen_imsm_checksum(super
->anchor
);
3779 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
3781 pr_err("IMSM checksum %x != %x on %s\n",
3782 check_sum
, __le32_to_cpu(super
->anchor
->check_sum
),
3787 /* FIXME the BBM log is disk specific so we cannot use this global
3788 * buffer for all disks. Ok for now since we only look at the global
3789 * bbm_log_size parameter to gate assembly
3791 super
->bbm_log
= __get_imsm_bbm_log(super
->anchor
);
3796 static int read_imsm_migr_rec(int fd
, struct intel_super
*super
);
3798 /* clears hi bits in metadata if MPB_ATTRIB_2TB_DISK not set */
3799 static void clear_hi(struct intel_super
*super
)
3801 struct imsm_super
*mpb
= super
->anchor
;
3803 if (mpb
->attributes
& MPB_ATTRIB_2TB_DISK
)
3805 for (i
= 0; i
< mpb
->num_disks
; ++i
) {
3806 struct imsm_disk
*disk
= &mpb
->disk
[i
];
3807 disk
->total_blocks_hi
= 0;
3809 for (i
= 0; i
< mpb
->num_raid_devs
; ++i
) {
3810 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
3813 for (n
= 0; n
< 2; ++n
) {
3814 struct imsm_map
*map
= get_imsm_map(dev
, n
);
3817 map
->pba_of_lba0_hi
= 0;
3818 map
->blocks_per_member_hi
= 0;
3819 map
->num_data_stripes_hi
= 0;
3825 load_and_parse_mpb(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
3829 err
= load_imsm_mpb(fd
, super
, devname
);
3832 err
= load_imsm_disk(fd
, super
, devname
, keep_fd
);
3835 err
= parse_raid_devices(super
);
3840 static void __free_imsm_disk(struct dl
*d
)
3852 static void free_imsm_disks(struct intel_super
*super
)
3856 while (super
->disks
) {
3858 super
->disks
= d
->next
;
3859 __free_imsm_disk(d
);
3861 while (super
->disk_mgmt_list
) {
3862 d
= super
->disk_mgmt_list
;
3863 super
->disk_mgmt_list
= d
->next
;
3864 __free_imsm_disk(d
);
3866 while (super
->missing
) {
3868 super
->missing
= d
->next
;
3869 __free_imsm_disk(d
);
3874 /* free all the pieces hanging off of a super pointer */
3875 static void __free_imsm(struct intel_super
*super
, int free_disks
)
3877 struct intel_hba
*elem
, *next
;
3883 /* unlink capability description */
3885 if (super
->migr_rec_buf
) {
3886 free(super
->migr_rec_buf
);
3887 super
->migr_rec_buf
= NULL
;
3890 free_imsm_disks(super
);
3891 free_devlist(super
);
3895 free((void *)elem
->path
);
3903 static void free_imsm(struct intel_super
*super
)
3905 __free_imsm(super
, 1);
3909 static void free_super_imsm(struct supertype
*st
)
3911 struct intel_super
*super
= st
->sb
;
3920 static struct intel_super
*alloc_super(void)
3922 struct intel_super
*super
= xcalloc(1, sizeof(*super
));
3924 super
->current_vol
= -1;
3925 super
->create_offset
= ~((unsigned long long) 0);
3930 * find and allocate hba and OROM/EFI based on valid fd of RAID component device
3932 static int find_intel_hba_capability(int fd
, struct intel_super
*super
, char *devname
)
3934 struct sys_dev
*hba_name
;
3937 if ((fd
< 0) || check_env("IMSM_NO_PLATFORM")) {
3942 hba_name
= find_disk_attached_hba(fd
, NULL
);
3945 pr_err("%s is not attached to Intel(R) RAID controller.\n",
3949 rv
= attach_hba_to_super(super
, hba_name
);
3952 struct intel_hba
*hba
= super
->hba
;
3954 pr_err("%s is attached to Intel(R) %s %s (%s),\n"
3955 " but the container is assigned to Intel(R) %s %s (",
3957 get_sys_dev_type(hba_name
->type
),
3958 hba_name
->type
== SYS_DEV_VMD
? "domain" : "RAID controller",
3959 hba_name
->pci_id
? : "Err!",
3960 get_sys_dev_type(super
->hba
->type
),
3961 hba
->type
== SYS_DEV_VMD
? "domain" : "RAID controller");
3964 fprintf(stderr
, "%s", hba
->pci_id
? : "Err!");
3966 fprintf(stderr
, ", ");
3969 fprintf(stderr
, ").\n"
3970 " Mixing devices attached to different %s is not allowed.\n",
3971 hba_name
->type
== SYS_DEV_VMD
? "VMD domains" : "controllers");
3975 super
->orom
= find_imsm_capability(hba_name
);
3982 /* find_missing - helper routine for load_super_imsm_all that identifies
3983 * disks that have disappeared from the system. This routine relies on
3984 * the mpb being uptodate, which it is at load time.
3986 static int find_missing(struct intel_super
*super
)
3989 struct imsm_super
*mpb
= super
->anchor
;
3991 struct imsm_disk
*disk
;
3993 for (i
= 0; i
< mpb
->num_disks
; i
++) {
3994 disk
= __get_imsm_disk(mpb
, i
);
3995 dl
= serial_to_dl(disk
->serial
, super
);
3999 dl
= xmalloc(sizeof(*dl
));
4003 dl
->devname
= xstrdup("missing");
4005 serialcpy(dl
->serial
, disk
->serial
);
4008 dl
->next
= super
->missing
;
4009 super
->missing
= dl
;
4016 static struct intel_disk
*disk_list_get(__u8
*serial
, struct intel_disk
*disk_list
)
4018 struct intel_disk
*idisk
= disk_list
;
4021 if (serialcmp(idisk
->disk
.serial
, serial
) == 0)
4023 idisk
= idisk
->next
;
4029 static int __prep_thunderdome(struct intel_super
**table
, int tbl_size
,
4030 struct intel_super
*super
,
4031 struct intel_disk
**disk_list
)
4033 struct imsm_disk
*d
= &super
->disks
->disk
;
4034 struct imsm_super
*mpb
= super
->anchor
;
4037 for (i
= 0; i
< tbl_size
; i
++) {
4038 struct imsm_super
*tbl_mpb
= table
[i
]->anchor
;
4039 struct imsm_disk
*tbl_d
= &table
[i
]->disks
->disk
;
4041 if (tbl_mpb
->family_num
== mpb
->family_num
) {
4042 if (tbl_mpb
->check_sum
== mpb
->check_sum
) {
4043 dprintf("mpb from %d:%d matches %d:%d\n",
4044 super
->disks
->major
,
4045 super
->disks
->minor
,
4046 table
[i
]->disks
->major
,
4047 table
[i
]->disks
->minor
);
4051 if (((is_configured(d
) && !is_configured(tbl_d
)) ||
4052 is_configured(d
) == is_configured(tbl_d
)) &&
4053 tbl_mpb
->generation_num
< mpb
->generation_num
) {
4054 /* current version of the mpb is a
4055 * better candidate than the one in
4056 * super_table, but copy over "cross
4057 * generational" status
4059 struct intel_disk
*idisk
;
4061 dprintf("mpb from %d:%d replaces %d:%d\n",
4062 super
->disks
->major
,
4063 super
->disks
->minor
,
4064 table
[i
]->disks
->major
,
4065 table
[i
]->disks
->minor
);
4067 idisk
= disk_list_get(tbl_d
->serial
, *disk_list
);
4068 if (idisk
&& is_failed(&idisk
->disk
))
4069 tbl_d
->status
|= FAILED_DISK
;
4072 struct intel_disk
*idisk
;
4073 struct imsm_disk
*disk
;
4075 /* tbl_mpb is more up to date, but copy
4076 * over cross generational status before
4079 disk
= __serial_to_disk(d
->serial
, mpb
, NULL
);
4080 if (disk
&& is_failed(disk
))
4081 d
->status
|= FAILED_DISK
;
4083 idisk
= disk_list_get(d
->serial
, *disk_list
);
4086 if (disk
&& is_configured(disk
))
4087 idisk
->disk
.status
|= CONFIGURED_DISK
;
4090 dprintf("mpb from %d:%d prefer %d:%d\n",
4091 super
->disks
->major
,
4092 super
->disks
->minor
,
4093 table
[i
]->disks
->major
,
4094 table
[i
]->disks
->minor
);
4102 table
[tbl_size
++] = super
;
4106 /* update/extend the merged list of imsm_disk records */
4107 for (j
= 0; j
< mpb
->num_disks
; j
++) {
4108 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, j
);
4109 struct intel_disk
*idisk
;
4111 idisk
= disk_list_get(disk
->serial
, *disk_list
);
4113 idisk
->disk
.status
|= disk
->status
;
4114 if (is_configured(&idisk
->disk
) ||
4115 is_failed(&idisk
->disk
))
4116 idisk
->disk
.status
&= ~(SPARE_DISK
);
4118 idisk
= xcalloc(1, sizeof(*idisk
));
4119 idisk
->owner
= IMSM_UNKNOWN_OWNER
;
4120 idisk
->disk
= *disk
;
4121 idisk
->next
= *disk_list
;
4125 if (serialcmp(idisk
->disk
.serial
, d
->serial
) == 0)
4132 static struct intel_super
*
4133 validate_members(struct intel_super
*super
, struct intel_disk
*disk_list
,
4136 struct imsm_super
*mpb
= super
->anchor
;
4140 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4141 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
4142 struct intel_disk
*idisk
;
4144 idisk
= disk_list_get(disk
->serial
, disk_list
);
4146 if (idisk
->owner
== owner
||
4147 idisk
->owner
== IMSM_UNKNOWN_OWNER
)
4150 dprintf("'%.16s' owner %d != %d\n",
4151 disk
->serial
, idisk
->owner
,
4154 dprintf("unknown disk %x [%d]: %.16s\n",
4155 __le32_to_cpu(mpb
->family_num
), i
,
4161 if (ok_count
== mpb
->num_disks
)
4166 static void show_conflicts(__u32 family_num
, struct intel_super
*super_list
)
4168 struct intel_super
*s
;
4170 for (s
= super_list
; s
; s
= s
->next
) {
4171 if (family_num
!= s
->anchor
->family_num
)
4173 pr_err("Conflict, offlining family %#x on '%s'\n",
4174 __le32_to_cpu(family_num
), s
->disks
->devname
);
4178 static struct intel_super
*
4179 imsm_thunderdome(struct intel_super
**super_list
, int len
)
4181 struct intel_super
*super_table
[len
];
4182 struct intel_disk
*disk_list
= NULL
;
4183 struct intel_super
*champion
, *spare
;
4184 struct intel_super
*s
, **del
;
4189 memset(super_table
, 0, sizeof(super_table
));
4190 for (s
= *super_list
; s
; s
= s
->next
)
4191 tbl_size
= __prep_thunderdome(super_table
, tbl_size
, s
, &disk_list
);
4193 for (i
= 0; i
< tbl_size
; i
++) {
4194 struct imsm_disk
*d
;
4195 struct intel_disk
*idisk
;
4196 struct imsm_super
*mpb
= super_table
[i
]->anchor
;
4199 d
= &s
->disks
->disk
;
4201 /* 'd' must appear in merged disk list for its
4202 * configuration to be valid
4204 idisk
= disk_list_get(d
->serial
, disk_list
);
4205 if (idisk
&& idisk
->owner
== i
)
4206 s
= validate_members(s
, disk_list
, i
);
4211 dprintf("marking family: %#x from %d:%d offline\n",
4213 super_table
[i
]->disks
->major
,
4214 super_table
[i
]->disks
->minor
);
4218 /* This is where the mdadm implementation differs from the Windows
4219 * driver which has no strict concept of a container. We can only
4220 * assemble one family from a container, so when returning a prodigal
4221 * array member to this system the code will not be able to disambiguate
4222 * the container contents that should be assembled ("foreign" versus
4223 * "local"). It requires user intervention to set the orig_family_num
4224 * to a new value to establish a new container. The Windows driver in
4225 * this situation fixes up the volume name in place and manages the
4226 * foreign array as an independent entity.
4231 for (i
= 0; i
< tbl_size
; i
++) {
4232 struct intel_super
*tbl_ent
= super_table
[i
];
4238 if (tbl_ent
->anchor
->num_raid_devs
== 0) {
4243 if (s
&& !is_spare
) {
4244 show_conflicts(tbl_ent
->anchor
->family_num
, *super_list
);
4246 } else if (!s
&& !is_spare
)
4259 pr_err("Chose family %#x on '%s', assemble conflicts to new container with '--update=uuid'\n",
4260 __le32_to_cpu(s
->anchor
->family_num
), s
->disks
->devname
);
4262 /* collect all dl's onto 'champion', and update them to
4263 * champion's version of the status
4265 for (s
= *super_list
; s
; s
= s
->next
) {
4266 struct imsm_super
*mpb
= champion
->anchor
;
4267 struct dl
*dl
= s
->disks
;
4272 mpb
->attributes
|= s
->anchor
->attributes
& MPB_ATTRIB_2TB_DISK
;
4274 for (i
= 0; i
< mpb
->num_disks
; i
++) {
4275 struct imsm_disk
*disk
;
4277 disk
= __serial_to_disk(dl
->serial
, mpb
, &dl
->index
);
4280 /* only set index on disks that are a member of
4281 * a populated contianer, i.e. one with
4284 if (is_failed(&dl
->disk
))
4286 else if (is_spare(&dl
->disk
))
4292 if (i
>= mpb
->num_disks
) {
4293 struct intel_disk
*idisk
;
4295 idisk
= disk_list_get(dl
->serial
, disk_list
);
4296 if (idisk
&& is_spare(&idisk
->disk
) &&
4297 !is_failed(&idisk
->disk
) && !is_configured(&idisk
->disk
))
4305 dl
->next
= champion
->disks
;
4306 champion
->disks
= dl
;
4310 /* delete 'champion' from super_list */
4311 for (del
= super_list
; *del
; ) {
4312 if (*del
== champion
) {
4313 *del
= (*del
)->next
;
4316 del
= &(*del
)->next
;
4318 champion
->next
= NULL
;
4322 struct intel_disk
*idisk
= disk_list
;
4324 disk_list
= disk_list
->next
;
4332 get_sra_super_block(int fd
, struct intel_super
**super_list
, char *devname
, int *max
, int keep_fd
);
4333 static int get_super_block(struct intel_super
**super_list
, char *devnm
, char *devname
,
4334 int major
, int minor
, int keep_fd
);
4336 get_devlist_super_block(struct md_list
*devlist
, struct intel_super
**super_list
,
4337 int *max
, int keep_fd
);
4339 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
4340 char *devname
, struct md_list
*devlist
,
4343 struct intel_super
*super_list
= NULL
;
4344 struct intel_super
*super
= NULL
;
4349 /* 'fd' is an opened container */
4350 err
= get_sra_super_block(fd
, &super_list
, devname
, &i
, keep_fd
);
4352 /* get super block from devlist devices */
4353 err
= get_devlist_super_block(devlist
, &super_list
, &i
, keep_fd
);
4356 /* all mpbs enter, maybe one leaves */
4357 super
= imsm_thunderdome(&super_list
, i
);
4363 if (find_missing(super
) != 0) {
4369 /* load migration record */
4370 err
= load_imsm_migr_rec(super
, NULL
);
4372 /* migration is in progress,
4373 * but migr_rec cannot be loaded,
4379 /* Check migration compatibility */
4380 if ((err
== 0) && (check_mpb_migr_compatibility(super
) != 0)) {
4381 pr_err("Unsupported migration detected");
4383 fprintf(stderr
, " on %s\n", devname
);
4385 fprintf(stderr
, " (IMSM).\n");
4394 while (super_list
) {
4395 struct intel_super
*s
= super_list
;
4397 super_list
= super_list
->next
;
4406 strcpy(st
->container_devnm
, fd2devnm(fd
));
4408 st
->container_devnm
[0] = 0;
4409 if (err
== 0 && st
->ss
== NULL
) {
4410 st
->ss
= &super_imsm
;
4411 st
->minor_version
= 0;
4412 st
->max_devs
= IMSM_MAX_DEVICES
;
4418 get_devlist_super_block(struct md_list
*devlist
, struct intel_super
**super_list
,
4419 int *max
, int keep_fd
)
4421 struct md_list
*tmpdev
;
4425 for (i
= 0, tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
4426 if (tmpdev
->used
!= 1)
4428 if (tmpdev
->container
== 1) {
4430 int fd
= dev_open(tmpdev
->devname
, O_RDONLY
|O_EXCL
);
4432 pr_err("cannot open device %s: %s\n",
4433 tmpdev
->devname
, strerror(errno
));
4437 err
= get_sra_super_block(fd
, super_list
,
4438 tmpdev
->devname
, &lmax
,
4447 int major
= major(tmpdev
->st_rdev
);
4448 int minor
= minor(tmpdev
->st_rdev
);
4449 err
= get_super_block(super_list
,
4466 static int get_super_block(struct intel_super
**super_list
, char *devnm
, char *devname
,
4467 int major
, int minor
, int keep_fd
)
4469 struct intel_super
*s
= NULL
;
4481 sprintf(nm
, "%d:%d", major
, minor
);
4482 dfd
= dev_open(nm
, O_RDWR
);
4488 find_intel_hba_capability(dfd
, s
, devname
);
4489 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
4491 /* retry the load if we might have raced against mdmon */
4492 if (err
== 3 && devnm
&& mdmon_running(devnm
))
4493 for (retry
= 0; retry
< 3; retry
++) {
4495 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
4501 s
->next
= *super_list
;
4509 if ((dfd
>= 0) && (!keep_fd
))
4516 get_sra_super_block(int fd
, struct intel_super
**super_list
, char *devname
, int *max
, int keep_fd
)
4523 sra
= sysfs_read(fd
, NULL
, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
4527 if (sra
->array
.major_version
!= -1 ||
4528 sra
->array
.minor_version
!= -2 ||
4529 strcmp(sra
->text_version
, "imsm") != 0) {
4534 devnm
= fd2devnm(fd
);
4535 for (sd
= sra
->devs
, i
= 0; sd
; sd
= sd
->next
, i
++) {
4536 if (get_super_block(super_list
, devnm
, devname
,
4537 sd
->disk
.major
, sd
->disk
.minor
, keep_fd
) != 0) {
4548 static int load_container_imsm(struct supertype
*st
, int fd
, char *devname
)
4550 return load_super_imsm_all(st
, fd
, &st
->sb
, devname
, NULL
, 1);
4554 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
4556 struct intel_super
*super
;
4560 if (test_partition(fd
))
4561 /* IMSM not allowed on partitions */
4564 free_super_imsm(st
);
4566 super
= alloc_super();
4567 /* Load hba and capabilities if they exist.
4568 * But do not preclude loading metadata in case capabilities or hba are
4569 * non-compliant and ignore_hw_compat is set.
4571 rv
= find_intel_hba_capability(fd
, super
, devname
);
4572 /* no orom/efi or non-intel hba of the disk */
4573 if ((rv
!= 0) && (st
->ignore_hw_compat
== 0)) {
4575 pr_err("No OROM/EFI properties for %s\n", devname
);
4579 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
4581 /* retry the load if we might have raced against mdmon */
4583 struct mdstat_ent
*mdstat
= mdstat_by_component(fd2devnm(fd
));
4585 if (mdstat
&& mdmon_running(mdstat
->devnm
) && getpid() != mdmon_pid(mdstat
->devnm
)) {
4586 for (retry
= 0; retry
< 3; retry
++) {
4588 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
4594 free_mdstat(mdstat
);
4599 pr_err("Failed to load all information sections on %s\n", devname
);
4605 if (st
->ss
== NULL
) {
4606 st
->ss
= &super_imsm
;
4607 st
->minor_version
= 0;
4608 st
->max_devs
= IMSM_MAX_DEVICES
;
4611 /* load migration record */
4612 if (load_imsm_migr_rec(super
, NULL
) == 0) {
4613 /* Check for unsupported migration features */
4614 if (check_mpb_migr_compatibility(super
) != 0) {
4615 pr_err("Unsupported migration detected");
4617 fprintf(stderr
, " on %s\n", devname
);
4619 fprintf(stderr
, " (IMSM).\n");
4627 static __u16
info_to_blocks_per_strip(mdu_array_info_t
*info
)
4629 if (info
->level
== 1)
4631 return info
->chunk_size
>> 9;
4634 static unsigned long long info_to_blocks_per_member(mdu_array_info_t
*info
,
4635 unsigned long long size
)
4637 if (info
->level
== 1)
4640 return (size
* 2) & ~(info_to_blocks_per_strip(info
) - 1);
4643 static void imsm_update_version_info(struct intel_super
*super
)
4645 /* update the version and attributes */
4646 struct imsm_super
*mpb
= super
->anchor
;
4648 struct imsm_dev
*dev
;
4649 struct imsm_map
*map
;
4652 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4653 dev
= get_imsm_dev(super
, i
);
4654 map
= get_imsm_map(dev
, MAP_0
);
4655 if (__le32_to_cpu(dev
->size_high
) > 0)
4656 mpb
->attributes
|= MPB_ATTRIB_2TB
;
4658 /* FIXME detect when an array spans a port multiplier */
4660 mpb
->attributes
|= MPB_ATTRIB_PM
;
4663 if (mpb
->num_raid_devs
> 1 ||
4664 mpb
->attributes
!= MPB_ATTRIB_CHECKSUM_VERIFY
) {
4665 version
= MPB_VERSION_ATTRIBS
;
4666 switch (get_imsm_raid_level(map
)) {
4667 case 0: mpb
->attributes
|= MPB_ATTRIB_RAID0
; break;
4668 case 1: mpb
->attributes
|= MPB_ATTRIB_RAID1
; break;
4669 case 10: mpb
->attributes
|= MPB_ATTRIB_RAID10
; break;
4670 case 5: mpb
->attributes
|= MPB_ATTRIB_RAID5
; break;
4673 if (map
->num_members
>= 5)
4674 version
= MPB_VERSION_5OR6_DISK_ARRAY
;
4675 else if (dev
->status
== DEV_CLONE_N_GO
)
4676 version
= MPB_VERSION_CNG
;
4677 else if (get_imsm_raid_level(map
) == 5)
4678 version
= MPB_VERSION_RAID5
;
4679 else if (map
->num_members
>= 3)
4680 version
= MPB_VERSION_3OR4_DISK_ARRAY
;
4681 else if (get_imsm_raid_level(map
) == 1)
4682 version
= MPB_VERSION_RAID1
;
4684 version
= MPB_VERSION_RAID0
;
4686 strcpy(((char *) mpb
->sig
) + strlen(MPB_SIGNATURE
), version
);
4690 static int check_name(struct intel_super
*super
, char *name
, int quiet
)
4692 struct imsm_super
*mpb
= super
->anchor
;
4693 char *reason
= NULL
;
4696 if (strlen(name
) > MAX_RAID_SERIAL_LEN
)
4697 reason
= "must be 16 characters or less";
4699 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4700 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
4702 if (strncmp((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
) == 0) {
4703 reason
= "already exists";
4708 if (reason
&& !quiet
)
4709 pr_err("imsm volume name %s\n", reason
);
4714 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
4715 unsigned long long size
, char *name
,
4716 char *homehost
, int *uuid
,
4717 long long data_offset
)
4719 /* We are creating a volume inside a pre-existing container.
4720 * so st->sb is already set.
4722 struct intel_super
*super
= st
->sb
;
4723 struct imsm_super
*mpb
= super
->anchor
;
4724 struct intel_dev
*dv
;
4725 struct imsm_dev
*dev
;
4726 struct imsm_vol
*vol
;
4727 struct imsm_map
*map
;
4728 int idx
= mpb
->num_raid_devs
;
4730 unsigned long long array_blocks
;
4731 size_t size_old
, size_new
;
4732 unsigned long long num_data_stripes
;
4734 if (super
->orom
&& mpb
->num_raid_devs
>= super
->orom
->vpa
) {
4735 pr_err("This imsm-container already has the maximum of %d volumes\n", super
->orom
->vpa
);
4739 /* ensure the mpb is large enough for the new data */
4740 size_old
= __le32_to_cpu(mpb
->mpb_size
);
4741 size_new
= disks_to_mpb_size(info
->nr_disks
);
4742 if (size_new
> size_old
) {
4744 size_t size_round
= ROUND_UP(size_new
, 512);
4746 if (posix_memalign(&mpb_new
, 512, size_round
) != 0) {
4747 pr_err("could not allocate new mpb\n");
4750 if (posix_memalign(&super
->migr_rec_buf
, 512,
4751 MIGR_REC_BUF_SIZE
) != 0) {
4752 pr_err("could not allocate migr_rec buffer\n");
4758 memcpy(mpb_new
, mpb
, size_old
);
4761 super
->anchor
= mpb_new
;
4762 mpb
->mpb_size
= __cpu_to_le32(size_new
);
4763 memset(mpb_new
+ size_old
, 0, size_round
- size_old
);
4765 super
->current_vol
= idx
;
4767 /* handle 'failed_disks' by either:
4768 * a) create dummy disk entries in the table if this the first
4769 * volume in the array. We add them here as this is the only
4770 * opportunity to add them. add_to_super_imsm_volume()
4771 * handles the non-failed disks and continues incrementing
4773 * b) validate that 'failed_disks' matches the current number
4774 * of missing disks if the container is populated
4776 if (super
->current_vol
== 0) {
4778 for (i
= 0; i
< info
->failed_disks
; i
++) {
4779 struct imsm_disk
*disk
;
4782 disk
= __get_imsm_disk(mpb
, i
);
4783 disk
->status
= CONFIGURED_DISK
| FAILED_DISK
;
4784 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
4785 snprintf((char *) disk
->serial
, MAX_RAID_SERIAL_LEN
,
4788 find_missing(super
);
4793 for (d
= super
->missing
; d
; d
= d
->next
)
4795 if (info
->failed_disks
> missing
) {
4796 pr_err("unable to add 'missing' disk to container\n");
4801 if (!check_name(super
, name
, 0))
4803 dv
= xmalloc(sizeof(*dv
));
4804 dev
= xcalloc(1, sizeof(*dev
) + sizeof(__u32
) * (info
->raid_disks
- 1));
4805 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
4806 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
4807 info
->layout
, info
->chunk_size
,
4809 /* round array size down to closest MB */
4810 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
4812 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
4813 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
4814 dev
->status
= (DEV_READ_COALESCING
| DEV_WRITE_COALESCING
);
4816 vol
->migr_state
= 0;
4817 set_migr_type(dev
, MIGR_INIT
);
4818 vol
->dirty
= !info
->state
;
4819 vol
->curr_migr_unit
= 0;
4820 map
= get_imsm_map(dev
, MAP_0
);
4821 set_pba_of_lba0(map
, super
->create_offset
);
4822 set_blocks_per_member(map
, info_to_blocks_per_member(info
, size
));
4823 map
->blocks_per_strip
= __cpu_to_le16(info_to_blocks_per_strip(info
));
4824 map
->failed_disk_num
= ~0;
4825 if (info
->level
> 0)
4826 map
->map_state
= (info
->state
? IMSM_T_STATE_NORMAL
4827 : IMSM_T_STATE_UNINITIALIZED
);
4829 map
->map_state
= info
->failed_disks
? IMSM_T_STATE_FAILED
:
4830 IMSM_T_STATE_NORMAL
;
4833 if (info
->level
== 1 && info
->raid_disks
> 2) {
4836 pr_err("imsm does not support more than 2 disksin a raid1 volume\n");
4840 map
->raid_level
= info
->level
;
4841 if (info
->level
== 10) {
4842 map
->raid_level
= 1;
4843 map
->num_domains
= info
->raid_disks
/ 2;
4844 } else if (info
->level
== 1)
4845 map
->num_domains
= info
->raid_disks
;
4847 map
->num_domains
= 1;
4849 /* info->size is only int so use the 'size' parameter instead */
4850 num_data_stripes
= (size
* 2) / info_to_blocks_per_strip(info
);
4851 num_data_stripes
/= map
->num_domains
;
4852 set_num_data_stripes(map
, num_data_stripes
);
4854 map
->num_members
= info
->raid_disks
;
4855 for (i
= 0; i
< map
->num_members
; i
++) {
4856 /* initialized in add_to_super */
4857 set_imsm_ord_tbl_ent(map
, i
, IMSM_ORD_REBUILD
);
4859 mpb
->num_raid_devs
++;
4862 dv
->index
= super
->current_vol
;
4863 dv
->next
= super
->devlist
;
4864 super
->devlist
= dv
;
4866 imsm_update_version_info(super
);
4871 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
4872 unsigned long long size
, char *name
,
4873 char *homehost
, int *uuid
,
4874 unsigned long long data_offset
)
4876 /* This is primarily called by Create when creating a new array.
4877 * We will then get add_to_super called for each component, and then
4878 * write_init_super called to write it out to each device.
4879 * For IMSM, Create can create on fresh devices or on a pre-existing
4881 * To create on a pre-existing array a different method will be called.
4882 * This one is just for fresh drives.
4884 struct intel_super
*super
;
4885 struct imsm_super
*mpb
;
4889 if (data_offset
!= INVALID_SECTORS
) {
4890 pr_err("data-offset not supported by imsm\n");
4895 return init_super_imsm_volume(st
, info
, size
, name
, homehost
, uuid
,
4899 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
4903 super
= alloc_super();
4904 if (super
&& posix_memalign(&super
->buf
, 512, mpb_size
) != 0) {
4909 pr_err("could not allocate superblock\n");
4912 if (posix_memalign(&super
->migr_rec_buf
, 512, MIGR_REC_BUF_SIZE
) != 0) {
4913 pr_err("could not allocate migr_rec buffer\n");
4918 memset(super
->buf
, 0, mpb_size
);
4920 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
4924 /* zeroing superblock */
4928 mpb
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
4930 version
= (char *) mpb
->sig
;
4931 strcpy(version
, MPB_SIGNATURE
);
4932 version
+= strlen(MPB_SIGNATURE
);
4933 strcpy(version
, MPB_VERSION_RAID0
);
4939 static int add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
4940 int fd
, char *devname
)
4942 struct intel_super
*super
= st
->sb
;
4943 struct imsm_super
*mpb
= super
->anchor
;
4944 struct imsm_disk
*_disk
;
4945 struct imsm_dev
*dev
;
4946 struct imsm_map
*map
;
4950 dev
= get_imsm_dev(super
, super
->current_vol
);
4951 map
= get_imsm_map(dev
, MAP_0
);
4953 if (! (dk
->state
& (1<<MD_DISK_SYNC
))) {
4954 pr_err("%s: Cannot add spare devices to IMSM volume\n",
4960 /* we're doing autolayout so grab the pre-marked (in
4961 * validate_geometry) raid_disk
4963 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
4964 if (dl
->raiddisk
== dk
->raid_disk
)
4967 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
4968 if (dl
->major
== dk
->major
&&
4969 dl
->minor
== dk
->minor
)
4974 pr_err("%s is not a member of the same container\n", devname
);
4978 /* add a pristine spare to the metadata */
4979 if (dl
->index
< 0) {
4980 dl
->index
= super
->anchor
->num_disks
;
4981 super
->anchor
->num_disks
++;
4983 /* Check the device has not already been added */
4984 slot
= get_imsm_disk_slot(map
, dl
->index
);
4986 (get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
) & IMSM_ORD_REBUILD
) == 0) {
4987 pr_err("%s has been included in this array twice\n",
4991 set_imsm_ord_tbl_ent(map
, dk
->raid_disk
, dl
->index
);
4992 dl
->disk
.status
= CONFIGURED_DISK
;
4994 /* update size of 'missing' disks to be at least as large as the
4995 * largest acitve member (we only have dummy missing disks when
4996 * creating the first volume)
4998 if (super
->current_vol
== 0) {
4999 for (df
= super
->missing
; df
; df
= df
->next
) {
5000 if (total_blocks(&dl
->disk
) > total_blocks(&df
->disk
))
5001 set_total_blocks(&df
->disk
, total_blocks(&dl
->disk
));
5002 _disk
= __get_imsm_disk(mpb
, df
->index
);
5007 /* refresh unset/failed slots to point to valid 'missing' entries */
5008 for (df
= super
->missing
; df
; df
= df
->next
)
5009 for (slot
= 0; slot
< mpb
->num_disks
; slot
++) {
5010 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
5012 if ((ord
& IMSM_ORD_REBUILD
) == 0)
5014 set_imsm_ord_tbl_ent(map
, slot
, df
->index
| IMSM_ORD_REBUILD
);
5015 if (is_gen_migration(dev
)) {
5016 struct imsm_map
*map2
= get_imsm_map(dev
,
5018 int slot2
= get_imsm_disk_slot(map2
, df
->index
);
5019 if ((slot2
< map2
->num_members
) &&
5021 __u32 ord2
= get_imsm_ord_tbl_ent(dev
,
5024 if ((unsigned)df
->index
==
5026 set_imsm_ord_tbl_ent(map2
,
5032 dprintf("set slot:%d to missing disk:%d\n", slot
, df
->index
);
5036 /* if we are creating the first raid device update the family number */
5037 if (super
->current_vol
== 0) {
5039 struct imsm_dev
*_dev
= __get_imsm_dev(mpb
, 0);
5041 _disk
= __get_imsm_disk(mpb
, dl
->index
);
5042 if (!_dev
|| !_disk
) {
5043 pr_err("BUG mpb setup error\n");
5049 sum
+= __gen_imsm_checksum(mpb
);
5050 mpb
->family_num
= __cpu_to_le32(sum
);
5051 mpb
->orig_family_num
= mpb
->family_num
;
5053 super
->current_disk
= dl
;
5058 * Function marks disk as spare and restores disk serial
5059 * in case it was previously marked as failed by takeover operation
5061 * -1 : critical error
5062 * 0 : disk is marked as spare but serial is not set
5065 int mark_spare(struct dl
*disk
)
5067 __u8 serial
[MAX_RAID_SERIAL_LEN
];
5074 if (!imsm_read_serial(disk
->fd
, NULL
, serial
)) {
5075 /* Restore disk serial number, because takeover marks disk
5076 * as failed and adds to serial ':0' before it becomes
5079 serialcpy(disk
->serial
, serial
);
5080 serialcpy(disk
->disk
.serial
, serial
);
5083 disk
->disk
.status
= SPARE_DISK
;
5089 static int add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
5090 int fd
, char *devname
,
5091 unsigned long long data_offset
)
5093 struct intel_super
*super
= st
->sb
;
5095 unsigned long long size
;
5100 /* If we are on an RAID enabled platform check that the disk is
5101 * attached to the raid controller.
5102 * We do not need to test disks attachment for container based additions,
5103 * they shall be already tested when container was created/assembled.
5105 rv
= find_intel_hba_capability(fd
, super
, devname
);
5106 /* no orom/efi or non-intel hba of the disk */
5108 dprintf("capability: %p fd: %d ret: %d\n",
5109 super
->orom
, fd
, rv
);
5113 if (super
->current_vol
>= 0)
5114 return add_to_super_imsm_volume(st
, dk
, fd
, devname
);
5117 dd
= xcalloc(sizeof(*dd
), 1);
5118 dd
->major
= major(stb
.st_rdev
);
5119 dd
->minor
= minor(stb
.st_rdev
);
5120 dd
->devname
= devname
? xstrdup(devname
) : NULL
;
5123 dd
->action
= DISK_ADD
;
5124 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
5126 pr_err("failed to retrieve scsi serial, aborting\n");
5131 get_dev_size(fd
, NULL
, &size
);
5132 /* clear migr_rec when adding disk to container */
5133 memset(super
->migr_rec_buf
, 0, MIGR_REC_BUF_SIZE
);
5134 if (lseek64(fd
, size
- MIGR_REC_POSITION
, SEEK_SET
) >= 0) {
5135 if (write(fd
, super
->migr_rec_buf
,
5136 MIGR_REC_BUF_SIZE
) != MIGR_REC_BUF_SIZE
)
5137 perror("Write migr_rec failed");
5141 serialcpy(dd
->disk
.serial
, dd
->serial
);
5142 set_total_blocks(&dd
->disk
, size
);
5143 if (__le32_to_cpu(dd
->disk
.total_blocks_hi
) > 0) {
5144 struct imsm_super
*mpb
= super
->anchor
;
5145 mpb
->attributes
|= MPB_ATTRIB_2TB_DISK
;
5148 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
5149 dd
->disk
.scsi_id
= __cpu_to_le32(id
);
5151 dd
->disk
.scsi_id
= __cpu_to_le32(0);
5153 if (st
->update_tail
) {
5154 dd
->next
= super
->disk_mgmt_list
;
5155 super
->disk_mgmt_list
= dd
;
5157 dd
->next
= super
->disks
;
5159 super
->updates_pending
++;
5165 static int remove_from_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
)
5167 struct intel_super
*super
= st
->sb
;
5170 /* remove from super works only in mdmon - for communication
5171 * manager - monitor. Check if communication memory buffer
5174 if (!st
->update_tail
) {
5175 pr_err("shall be used in mdmon context only\n");
5178 dd
= xcalloc(1, sizeof(*dd
));
5179 dd
->major
= dk
->major
;
5180 dd
->minor
= dk
->minor
;
5183 dd
->action
= DISK_REMOVE
;
5185 dd
->next
= super
->disk_mgmt_list
;
5186 super
->disk_mgmt_list
= dd
;
5191 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
);
5195 struct imsm_super anchor
;
5196 } spare_record
__attribute__ ((aligned(512)));
5198 /* spare records have their own family number and do not have any defined raid
5201 static int write_super_imsm_spares(struct intel_super
*super
, int doclose
)
5203 struct imsm_super
*mpb
= super
->anchor
;
5204 struct imsm_super
*spare
= &spare_record
.anchor
;
5208 spare
->mpb_size
= __cpu_to_le32(sizeof(struct imsm_super
));
5209 spare
->generation_num
= __cpu_to_le32(1UL);
5210 spare
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
5211 spare
->num_disks
= 1;
5212 spare
->num_raid_devs
= 0;
5213 spare
->cache_size
= mpb
->cache_size
;
5214 spare
->pwr_cycle_count
= __cpu_to_le32(1);
5216 snprintf((char *) spare
->sig
, MAX_SIGNATURE_LENGTH
,
5217 MPB_SIGNATURE MPB_VERSION_RAID0
);
5219 for (d
= super
->disks
; d
; d
= d
->next
) {
5223 spare
->disk
[0] = d
->disk
;
5224 if (__le32_to_cpu(d
->disk
.total_blocks_hi
) > 0)
5225 spare
->attributes
|= MPB_ATTRIB_2TB_DISK
;
5227 sum
= __gen_imsm_checksum(spare
);
5228 spare
->family_num
= __cpu_to_le32(sum
);
5229 spare
->orig_family_num
= 0;
5230 sum
= __gen_imsm_checksum(spare
);
5231 spare
->check_sum
= __cpu_to_le32(sum
);
5233 if (store_imsm_mpb(d
->fd
, spare
)) {
5234 pr_err("failed for device %d:%d %s\n",
5235 d
->major
, d
->minor
, strerror(errno
));
5247 static int write_super_imsm(struct supertype
*st
, int doclose
)
5249 struct intel_super
*super
= st
->sb
;
5250 struct imsm_super
*mpb
= super
->anchor
;
5256 __u32 mpb_size
= sizeof(struct imsm_super
) - sizeof(struct imsm_disk
);
5258 int clear_migration_record
= 1;
5260 /* 'generation' is incremented everytime the metadata is written */
5261 generation
= __le32_to_cpu(mpb
->generation_num
);
5263 mpb
->generation_num
= __cpu_to_le32(generation
);
5265 /* fix up cases where previous mdadm releases failed to set
5268 if (mpb
->orig_family_num
== 0)
5269 mpb
->orig_family_num
= mpb
->family_num
;
5271 for (d
= super
->disks
; d
; d
= d
->next
) {
5275 mpb
->disk
[d
->index
] = d
->disk
;
5279 for (d
= super
->missing
; d
; d
= d
->next
) {
5280 mpb
->disk
[d
->index
] = d
->disk
;
5283 mpb
->num_disks
= num_disks
;
5284 mpb_size
+= sizeof(struct imsm_disk
) * mpb
->num_disks
;
5286 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
5287 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
5288 struct imsm_dev
*dev2
= get_imsm_dev(super
, i
);
5290 imsm_copy_dev(dev
, dev2
);
5291 mpb_size
+= sizeof_imsm_dev(dev
, 0);
5293 if (is_gen_migration(dev2
))
5294 clear_migration_record
= 0;
5296 mpb_size
+= __le32_to_cpu(mpb
->bbm_log_size
);
5297 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
5299 /* recalculate checksum */
5300 sum
= __gen_imsm_checksum(mpb
);
5301 mpb
->check_sum
= __cpu_to_le32(sum
);
5303 if (super
->clean_migration_record_by_mdmon
) {
5304 clear_migration_record
= 1;
5305 super
->clean_migration_record_by_mdmon
= 0;
5307 if (clear_migration_record
)
5308 memset(super
->migr_rec_buf
, 0, MIGR_REC_BUF_SIZE
);
5310 /* write the mpb for disks that compose raid devices */
5311 for (d
= super
->disks
; d
; d
= d
->next
) {
5312 if (d
->index
< 0 || is_failed(&d
->disk
))
5315 if (clear_migration_record
) {
5316 unsigned long long dsize
;
5318 get_dev_size(d
->fd
, NULL
, &dsize
);
5319 if (lseek64(d
->fd
, dsize
- 512, SEEK_SET
) >= 0) {
5320 if (write(d
->fd
, super
->migr_rec_buf
,
5321 MIGR_REC_BUF_SIZE
) != MIGR_REC_BUF_SIZE
)
5322 perror("Write migr_rec failed");
5326 if (store_imsm_mpb(d
->fd
, mpb
))
5328 "failed for device %d:%d (fd: %d)%s\n",
5330 d
->fd
, strerror(errno
));
5339 return write_super_imsm_spares(super
, doclose
);
5344 static int create_array(struct supertype
*st
, int dev_idx
)
5347 struct imsm_update_create_array
*u
;
5348 struct intel_super
*super
= st
->sb
;
5349 struct imsm_dev
*dev
= get_imsm_dev(super
, dev_idx
);
5350 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
5351 struct disk_info
*inf
;
5352 struct imsm_disk
*disk
;
5355 len
= sizeof(*u
) - sizeof(*dev
) + sizeof_imsm_dev(dev
, 0) +
5356 sizeof(*inf
) * map
->num_members
;
5358 u
->type
= update_create_array
;
5359 u
->dev_idx
= dev_idx
;
5360 imsm_copy_dev(&u
->dev
, dev
);
5361 inf
= get_disk_info(u
);
5362 for (i
= 0; i
< map
->num_members
; i
++) {
5363 int idx
= get_imsm_disk_idx(dev
, i
, MAP_X
);
5365 disk
= get_imsm_disk(super
, idx
);
5367 disk
= get_imsm_missing(super
, idx
);
5368 serialcpy(inf
[i
].serial
, disk
->serial
);
5370 append_metadata_update(st
, u
, len
);
5375 static int mgmt_disk(struct supertype
*st
)
5377 struct intel_super
*super
= st
->sb
;
5379 struct imsm_update_add_remove_disk
*u
;
5381 if (!super
->disk_mgmt_list
)
5386 u
->type
= update_add_remove_disk
;
5387 append_metadata_update(st
, u
, len
);
5392 static int write_init_super_imsm(struct supertype
*st
)
5394 struct intel_super
*super
= st
->sb
;
5395 int current_vol
= super
->current_vol
;
5397 /* we are done with current_vol reset it to point st at the container */
5398 super
->current_vol
= -1;
5400 if (st
->update_tail
) {
5401 /* queue the recently created array / added disk
5402 * as a metadata update */
5405 /* determine if we are creating a volume or adding a disk */
5406 if (current_vol
< 0) {
5407 /* in the mgmt (add/remove) disk case we are running
5408 * in mdmon context, so don't close fd's
5410 return mgmt_disk(st
);
5412 rv
= create_array(st
, current_vol
);
5417 for (d
= super
->disks
; d
; d
= d
->next
)
5418 Kill(d
->devname
, NULL
, 0, -1, 1);
5419 return write_super_imsm(st
, 1);
5424 static int store_super_imsm(struct supertype
*st
, int fd
)
5426 struct intel_super
*super
= st
->sb
;
5427 struct imsm_super
*mpb
= super
? super
->anchor
: NULL
;
5433 return store_imsm_mpb(fd
, mpb
);
5439 static int imsm_bbm_log_size(struct imsm_super
*mpb
)
5441 return __le32_to_cpu(mpb
->bbm_log_size
);
5445 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
5446 int layout
, int raiddisks
, int chunk
,
5447 unsigned long long size
,
5448 unsigned long long data_offset
,
5450 unsigned long long *freesize
,
5454 unsigned long long ldsize
;
5455 struct intel_super
*super
=NULL
;
5458 if (level
!= LEVEL_CONTAINER
)
5463 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
5466 pr_err("imsm: Cannot open %s: %s\n",
5467 dev
, strerror(errno
));
5470 if (!get_dev_size(fd
, dev
, &ldsize
)) {
5475 /* capabilities retrieve could be possible
5476 * note that there is no fd for the disks in array.
5478 super
= alloc_super();
5479 rv
= find_intel_hba_capability(fd
, super
, verbose
> 0 ? dev
: NULL
);
5483 fd2devname(fd
, str
);
5484 dprintf("fd: %d %s orom: %p rv: %d raiddisk: %d\n",
5485 fd
, str
, super
->orom
, rv
, raiddisks
);
5487 /* no orom/efi or non-intel hba of the disk */
5494 if (raiddisks
> super
->orom
->tds
) {
5496 pr_err("%d exceeds maximum number of platform supported disks: %d\n",
5497 raiddisks
, super
->orom
->tds
);
5501 if ((super
->orom
->attr
& IMSM_OROM_ATTR_2TB_DISK
) == 0 &&
5502 (ldsize
>> 9) >> 32 > 0) {
5504 pr_err("%s exceeds maximum platform supported size\n", dev
);
5510 *freesize
= avail_size_imsm(st
, ldsize
>> 9, data_offset
);
5516 static unsigned long long find_size(struct extent
*e
, int *idx
, int num_extents
)
5518 const unsigned long long base_start
= e
[*idx
].start
;
5519 unsigned long long end
= base_start
+ e
[*idx
].size
;
5522 if (base_start
== end
)
5526 for (i
= *idx
; i
< num_extents
; i
++) {
5527 /* extend overlapping extents */
5528 if (e
[i
].start
>= base_start
&&
5529 e
[i
].start
<= end
) {
5532 if (e
[i
].start
+ e
[i
].size
> end
)
5533 end
= e
[i
].start
+ e
[i
].size
;
5534 } else if (e
[i
].start
> end
) {
5540 return end
- base_start
;
5543 static unsigned long long merge_extents(struct intel_super
*super
, int sum_extents
)
5545 /* build a composite disk with all known extents and generate a new
5546 * 'maxsize' given the "all disks in an array must share a common start
5547 * offset" constraint
5549 struct extent
*e
= xcalloc(sum_extents
, sizeof(*e
));
5553 unsigned long long pos
;
5554 unsigned long long start
= 0;
5555 unsigned long long maxsize
;
5556 unsigned long reserve
;
5558 /* coalesce and sort all extents. also, check to see if we need to
5559 * reserve space between member arrays
5562 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
5565 for (i
= 0; i
< dl
->extent_cnt
; i
++)
5568 qsort(e
, sum_extents
, sizeof(*e
), cmp_extent
);
5573 while (i
< sum_extents
) {
5574 e
[j
].start
= e
[i
].start
;
5575 e
[j
].size
= find_size(e
, &i
, sum_extents
);
5577 if (e
[j
-1].size
== 0)
5586 unsigned long long esize
;
5588 esize
= e
[i
].start
- pos
;
5589 if (esize
>= maxsize
) {
5594 pos
= e
[i
].start
+ e
[i
].size
;
5596 } while (e
[i
-1].size
);
5602 /* FIXME assumes volume at offset 0 is the first volume in a
5605 if (start_extent
> 0)
5606 reserve
= IMSM_RESERVED_SECTORS
; /* gap between raid regions */
5610 if (maxsize
< reserve
)
5613 super
->create_offset
= ~((unsigned long long) 0);
5614 if (start
+ reserve
> super
->create_offset
)
5615 return 0; /* start overflows create_offset */
5616 super
->create_offset
= start
+ reserve
;
5618 return maxsize
- reserve
;
5621 static int is_raid_level_supported(const struct imsm_orom
*orom
, int level
, int raiddisks
)
5623 if (level
< 0 || level
== 6 || level
== 4)
5626 /* if we have an orom prevent invalid raid levels */
5629 case 0: return imsm_orom_has_raid0(orom
);
5632 return imsm_orom_has_raid1e(orom
);
5633 return imsm_orom_has_raid1(orom
) && raiddisks
== 2;
5634 case 10: return imsm_orom_has_raid10(orom
) && raiddisks
== 4;
5635 case 5: return imsm_orom_has_raid5(orom
) && raiddisks
> 2;
5638 return 1; /* not on an Intel RAID platform so anything goes */
5644 active_arrays_by_format(char *name
, char* hba
, struct md_list
**devlist
,
5645 int dpa
, int verbose
)
5647 struct mdstat_ent
*mdstat
= mdstat_read(0, 0);
5648 struct mdstat_ent
*memb
= NULL
;
5651 struct md_list
*dv
= NULL
;
5654 for (memb
= mdstat
; memb
; memb
= memb
->next
) {
5655 if (memb
->metadata_version
&&
5656 (strncmp(memb
->metadata_version
, "external:", 9) == 0) &&
5657 (strcmp(&memb
->metadata_version
[9], name
) == 0) &&
5658 !is_subarray(memb
->metadata_version
+9) &&
5660 struct dev_member
*dev
= memb
->members
;
5662 while(dev
&& (fd
< 0)) {
5663 char *path
= xmalloc(strlen(dev
->name
) + strlen("/dev/") + 1);
5664 num
= sprintf(path
, "%s%s", "/dev/", dev
->name
);
5666 fd
= open(path
, O_RDONLY
, 0);
5667 if ((num
<= 0) || (fd
< 0)) {
5668 pr_vrb(": Cannot open %s: %s\n",
5669 dev
->name
, strerror(errno
));
5675 if ((fd
>= 0) && disk_attached_to_hba(fd
, hba
)) {
5676 struct mdstat_ent
*vol
;
5677 for (vol
= mdstat
; vol
; vol
= vol
->next
) {
5678 if ((vol
->active
> 0) &&
5679 vol
->metadata_version
&&
5680 is_container_member(vol
, memb
->devnm
)) {
5685 if (*devlist
&& (found
< dpa
)) {
5686 dv
= xcalloc(1, sizeof(*dv
));
5687 dv
->devname
= xmalloc(strlen(memb
->devnm
) + strlen("/dev/") + 1);
5688 sprintf(dv
->devname
, "%s%s", "/dev/", memb
->devnm
);
5691 dv
->next
= *devlist
;
5699 free_mdstat(mdstat
);
5704 static struct md_list
*
5705 get_loop_devices(void)
5708 struct md_list
*devlist
= NULL
;
5709 struct md_list
*dv
= NULL
;
5711 for(i
= 0; i
< 12; i
++) {
5712 dv
= xcalloc(1, sizeof(*dv
));
5713 dv
->devname
= xmalloc(40);
5714 sprintf(dv
->devname
, "/dev/loop%d", i
);
5722 static struct md_list
*
5723 get_devices(const char *hba_path
)
5725 struct md_list
*devlist
= NULL
;
5726 struct md_list
*dv
= NULL
;
5732 devlist
= get_loop_devices();
5735 /* scroll through /sys/dev/block looking for devices attached to
5738 dir
= opendir("/sys/dev/block");
5739 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
5744 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
5746 path
= devt_to_devpath(makedev(major
, minor
));
5749 if (!path_attached_to_hba(path
, hba_path
)) {
5756 fd
= dev_open(ent
->d_name
, O_RDONLY
);
5758 fd2devname(fd
, buf
);
5761 pr_err("cannot open device: %s\n",
5766 dv
= xcalloc(1, sizeof(*dv
));
5767 dv
->devname
= xstrdup(buf
);
5774 devlist
= devlist
->next
;
5784 count_volumes_list(struct md_list
*devlist
, char *homehost
,
5785 int verbose
, int *found
)
5787 struct md_list
*tmpdev
;
5789 struct supertype
*st
= NULL
;
5791 /* first walk the list of devices to find a consistent set
5792 * that match the criterea, if that is possible.
5793 * We flag the ones we like with 'used'.
5796 st
= match_metadata_desc_imsm("imsm");
5798 pr_vrb(": cannot allocate memory for imsm supertype\n");
5802 for (tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
5803 char *devname
= tmpdev
->devname
;
5805 struct supertype
*tst
;
5807 if (tmpdev
->used
> 1)
5809 tst
= dup_super(st
);
5811 pr_vrb(": cannot allocate memory for imsm supertype\n");
5814 tmpdev
->container
= 0;
5815 dfd
= dev_open(devname
, O_RDONLY
|O_EXCL
);
5817 dprintf("cannot open device %s: %s\n",
5818 devname
, strerror(errno
));
5820 } else if (fstat(dfd
, &stb
)< 0) {
5822 dprintf("fstat failed for %s: %s\n",
5823 devname
, strerror(errno
));
5825 } else if ((stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
5826 dprintf("%s is not a block device.\n",
5829 } else if (must_be_container(dfd
)) {
5830 struct supertype
*cst
;
5831 cst
= super_by_fd(dfd
, NULL
);
5833 dprintf("cannot recognize container type %s\n",
5836 } else if (tst
->ss
!= st
->ss
) {
5837 dprintf("non-imsm container - ignore it: %s\n",
5840 } else if (!tst
->ss
->load_container
||
5841 tst
->ss
->load_container(tst
, dfd
, NULL
))
5844 tmpdev
->container
= 1;
5847 cst
->ss
->free_super(cst
);
5849 tmpdev
->st_rdev
= stb
.st_rdev
;
5850 if (tst
->ss
->load_super(tst
,dfd
, NULL
)) {
5851 dprintf("no RAID superblock on %s\n",
5854 } else if (tst
->ss
->compare_super
== NULL
) {
5855 dprintf("Cannot assemble %s metadata on %s\n",
5856 tst
->ss
->name
, devname
);
5862 if (tmpdev
->used
== 2 || tmpdev
->used
== 4) {
5863 /* Ignore unrecognised devices during auto-assembly */
5868 tst
->ss
->getinfo_super(tst
, &info
, NULL
);
5870 if (st
->minor_version
== -1)
5871 st
->minor_version
= tst
->minor_version
;
5873 if (memcmp(info
.uuid
, uuid_zero
,
5874 sizeof(int[4])) == 0) {
5875 /* this is a floating spare. It cannot define
5876 * an array unless there are no more arrays of
5877 * this type to be found. It can be included
5878 * in an array of this type though.
5884 if (st
->ss
!= tst
->ss
||
5885 st
->minor_version
!= tst
->minor_version
||
5886 st
->ss
->compare_super(st
, tst
) != 0) {
5887 /* Some mismatch. If exactly one array matches this host,
5888 * we can resolve on that one.
5889 * Or, if we are auto assembling, we just ignore the second
5892 dprintf("superblock on %s doesn't match others - assembly aborted\n",
5898 dprintf("found: devname: %s\n", devname
);
5902 tst
->ss
->free_super(tst
);
5906 if ((err
= load_super_imsm_all(st
, -1, &st
->sb
, NULL
, devlist
, 0)) == 0) {
5907 struct mdinfo
*iter
, *head
= st
->ss
->container_content(st
, NULL
);
5908 for (iter
= head
; iter
; iter
= iter
->next
) {
5909 dprintf("content->text_version: %s vol\n",
5910 iter
->text_version
);
5911 if (iter
->array
.state
& (1<<MD_SB_BLOCK_VOLUME
)) {
5912 /* do not assemble arrays with unsupported
5914 dprintf("Cannot activate member %s.\n",
5915 iter
->text_version
);
5922 dprintf("No valid super block on device list: err: %d %p\n",
5926 dprintf("no more devices to examine\n");
5929 for (tmpdev
= devlist
; tmpdev
; tmpdev
= tmpdev
->next
) {
5930 if ((tmpdev
->used
== 1) && (tmpdev
->found
)) {
5932 if (count
< tmpdev
->found
)
5935 count
-= tmpdev
->found
;
5938 if (tmpdev
->used
== 1)
5943 st
->ss
->free_super(st
);
5948 count_volumes(struct intel_hba
*hba
, int dpa
, int verbose
)
5950 struct sys_dev
*idev
, *intel_devices
= find_intel_devices();
5952 const struct orom_entry
*entry
;
5953 struct devid_list
*dv
, *devid_list
;
5955 if (!hba
|| !hba
->path
)
5958 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
5959 if (strstr(idev
->path
, hba
->path
))
5963 if (!idev
|| !idev
->dev_id
)
5966 entry
= get_orom_entry_by_device_id(idev
->dev_id
);
5968 if (!entry
|| !entry
->devid_list
)
5971 devid_list
= entry
->devid_list
;
5972 for (dv
= devid_list
; dv
; dv
= dv
->next
) {
5973 struct md_list
*devlist
= NULL
;
5974 struct sys_dev
*device
= device_by_id(dv
->devid
);
5979 hba_path
= device
->path
;
5983 /* VMD has one orom entry for all domain, but spanning is not allowed.
5984 * VMD arrays should be counted per domain (controller), so skip
5985 * domains that are not the given one.
5987 if ((hba
->type
== SYS_DEV_VMD
) &&
5988 (strncmp(device
->path
, hba
->path
, strlen(device
->path
)) != 0))
5991 devlist
= get_devices(hba_path
);
5992 /* if no intel devices return zero volumes */
5993 if (devlist
== NULL
)
5996 count
+= active_arrays_by_format("imsm", hba_path
, &devlist
, dpa
, verbose
);
5997 dprintf("path: %s active arrays: %d\n", hba_path
, count
);
5998 if (devlist
== NULL
)
6002 count
+= count_volumes_list(devlist
,
6006 dprintf("found %d count: %d\n", found
, count
);
6009 dprintf("path: %s total number of volumes: %d\n", hba_path
, count
);
6012 struct md_list
*dv
= devlist
;
6013 devlist
= devlist
->next
;
6021 static int imsm_default_chunk(const struct imsm_orom
*orom
)
6023 /* up to 512 if the plaform supports it, otherwise the platform max.
6024 * 128 if no platform detected
6026 int fs
= max(7, orom
? fls(orom
->sss
) : 0);
6028 return min(512, (1 << fs
));
6032 validate_geometry_imsm_orom(struct intel_super
*super
, int level
, int layout
,
6033 int raiddisks
, int *chunk
, unsigned long long size
, int verbose
)
6035 /* check/set platform and metadata limits/defaults */
6036 if (super
->orom
&& raiddisks
> super
->orom
->dpa
) {
6037 pr_vrb(": platform supports a maximum of %d disks per array\n",
6042 /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */
6043 if (!is_raid_level_supported(super
->orom
, level
, raiddisks
)) {
6044 pr_vrb(": platform does not support raid%d with %d disk%s\n",
6045 level
, raiddisks
, raiddisks
> 1 ? "s" : "");
6049 if (*chunk
== 0 || *chunk
== UnSet
)
6050 *chunk
= imsm_default_chunk(super
->orom
);
6052 if (super
->orom
&& !imsm_orom_has_chunk(super
->orom
, *chunk
)) {
6053 pr_vrb(": platform does not support a chunk size of: %d\n", *chunk
);
6057 if (layout
!= imsm_level_to_layout(level
)) {
6059 pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n");
6060 else if (level
== 10)
6061 pr_vrb(": imsm raid 10 only supports the n2 layout\n");
6063 pr_vrb(": imsm unknown layout %#x for this raid level %d\n",
6068 if (super
->orom
&& (super
->orom
->attr
& IMSM_OROM_ATTR_2TB
) == 0 &&
6069 (calc_array_size(level
, raiddisks
, layout
, *chunk
, size
) >> 32) > 0) {
6070 pr_vrb(": platform does not support a volume size over 2TB\n");
6077 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
6078 * FIX ME add ahci details
6080 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
6081 int layout
, int raiddisks
, int *chunk
,
6082 unsigned long long size
,
6083 unsigned long long data_offset
,
6085 unsigned long long *freesize
,
6089 struct intel_super
*super
= st
->sb
;
6090 struct imsm_super
*mpb
;
6092 unsigned long long pos
= 0;
6093 unsigned long long maxsize
;
6097 /* We must have the container info already read in. */
6101 mpb
= super
->anchor
;
6103 if (!validate_geometry_imsm_orom(super
, level
, layout
, raiddisks
, chunk
, size
, verbose
)) {
6104 pr_err("RAID gemetry validation failed. Cannot proceed with the action(s).\n");
6108 /* General test: make sure there is space for
6109 * 'raiddisks' device extents of size 'size' at a given
6112 unsigned long long minsize
= size
;
6113 unsigned long long start_offset
= MaxSector
;
6116 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
6117 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6122 e
= get_extents(super
, dl
);
6125 unsigned long long esize
;
6126 esize
= e
[i
].start
- pos
;
6127 if (esize
>= minsize
)
6129 if (found
&& start_offset
== MaxSector
) {
6132 } else if (found
&& pos
!= start_offset
) {
6136 pos
= e
[i
].start
+ e
[i
].size
;
6138 } while (e
[i
-1].size
);
6143 if (dcnt
< raiddisks
) {
6145 pr_err("imsm: Not enough devices with space for this array (%d < %d)\n",
6152 /* This device must be a member of the set */
6153 if (stat(dev
, &stb
) < 0)
6155 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
6157 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6158 if (dl
->major
== (int)major(stb
.st_rdev
) &&
6159 dl
->minor
== (int)minor(stb
.st_rdev
))
6164 pr_err("%s is not in the same imsm set\n", dev
);
6166 } else if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
) {
6167 /* If a volume is present then the current creation attempt
6168 * cannot incorporate new spares because the orom may not
6169 * understand this configuration (all member disks must be
6170 * members of each array in the container).
6172 pr_err("%s is a spare and a volume is already defined for this container\n", dev
);
6173 pr_err("The option-rom requires all member disks to be a member of all volumes\n");
6175 } else if (super
->orom
&& mpb
->num_raid_devs
> 0 &&
6176 mpb
->num_disks
!= raiddisks
) {
6177 pr_err("The option-rom requires all member disks to be a member of all volumes\n");
6181 /* retrieve the largest free space block */
6182 e
= get_extents(super
, dl
);
6187 unsigned long long esize
;
6189 esize
= e
[i
].start
- pos
;
6190 if (esize
>= maxsize
)
6192 pos
= e
[i
].start
+ e
[i
].size
;
6194 } while (e
[i
-1].size
);
6199 pr_err("unable to determine free space for: %s\n",
6203 if (maxsize
< size
) {
6205 pr_err("%s not enough space (%llu < %llu)\n",
6206 dev
, maxsize
, size
);
6210 /* count total number of extents for merge */
6212 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6214 i
+= dl
->extent_cnt
;
6216 maxsize
= merge_extents(super
, i
);
6218 if (!check_env("IMSM_NO_PLATFORM") &&
6219 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
6220 pr_err("attempting to create a second volume with size less then remaining space. Aborting...\n");
6224 if (maxsize
< size
|| maxsize
== 0) {
6227 pr_err("no free space left on device. Aborting...\n");
6229 pr_err("not enough space to create volume of given size (%llu < %llu). Aborting...\n",
6235 *freesize
= maxsize
;
6238 int count
= count_volumes(super
->hba
,
6239 super
->orom
->dpa
, verbose
);
6240 if (super
->orom
->vphba
<= count
) {
6241 pr_vrb(": platform does not support more than %d raid volumes.\n",
6242 super
->orom
->vphba
);
6249 static int imsm_get_free_size(struct supertype
*st
, int raiddisks
,
6250 unsigned long long size
, int chunk
,
6251 unsigned long long *freesize
)
6253 struct intel_super
*super
= st
->sb
;
6254 struct imsm_super
*mpb
= super
->anchor
;
6259 unsigned long long maxsize
;
6260 unsigned long long minsize
;
6264 /* find the largest common start free region of the possible disks */
6268 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
6274 /* don't activate new spares if we are orom constrained
6275 * and there is already a volume active in the container
6277 if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
)
6280 e
= get_extents(super
, dl
);
6283 for (i
= 1; e
[i
-1].size
; i
++)
6291 maxsize
= merge_extents(super
, extent_cnt
);
6295 minsize
= chunk
* 2;
6297 if (cnt
< raiddisks
||
6298 (super
->orom
&& used
&& used
!= raiddisks
) ||
6299 maxsize
< minsize
||
6301 pr_err("not enough devices with space to create array.\n");
6302 return 0; /* No enough free spaces large enough */
6313 if (!check_env("IMSM_NO_PLATFORM") &&
6314 mpb
->num_raid_devs
> 0 && size
&& size
!= maxsize
) {
6315 pr_err("attempting to create a second volume with size less then remaining space. Aborting...\n");
6319 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6321 dl
->raiddisk
= cnt
++;
6325 dprintf("imsm: imsm_get_free_size() returns : %llu\n", size
);
6330 static int reserve_space(struct supertype
*st
, int raiddisks
,
6331 unsigned long long size
, int chunk
,
6332 unsigned long long *freesize
)
6334 struct intel_super
*super
= st
->sb
;
6339 rv
= imsm_get_free_size(st
, raiddisks
, size
, chunk
, freesize
);
6342 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
6344 dl
->raiddisk
= cnt
++;
6351 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
6352 int raiddisks
, int *chunk
, unsigned long long size
,
6353 unsigned long long data_offset
,
6354 char *dev
, unsigned long long *freesize
,
6362 * if given unused devices create a container
6363 * if given given devices in a container create a member volume
6365 if (level
== LEVEL_CONTAINER
) {
6366 /* Must be a fresh device to add to a container */
6367 return validate_geometry_imsm_container(st
, level
, layout
,
6377 struct intel_super
*super
= st
->sb
;
6378 if (!validate_geometry_imsm_orom(st
->sb
, level
, layout
,
6379 raiddisks
, chunk
, size
,
6382 /* we are being asked to automatically layout a
6383 * new volume based on the current contents of
6384 * the container. If the the parameters can be
6385 * satisfied reserve_space will record the disks,
6386 * start offset, and size of the volume to be
6387 * created. add_to_super and getinfo_super
6388 * detect when autolayout is in progress.
6390 /* assuming that freesize is always given when array is
6392 if (super
->orom
&& freesize
) {
6394 count
= count_volumes(super
->hba
,
6395 super
->orom
->dpa
, verbose
);
6396 if (super
->orom
->vphba
<= count
) {
6397 pr_vrb(": platform does not support more than %d raid volumes.\n",
6398 super
->orom
->vphba
);
6403 return reserve_space(st
, raiddisks
, size
,
6409 /* creating in a given container */
6410 return validate_geometry_imsm_volume(st
, level
, layout
,
6411 raiddisks
, chunk
, size
,
6413 dev
, freesize
, verbose
);
6416 /* This device needs to be a device in an 'imsm' container */
6417 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
6420 pr_err("Cannot create this array on device %s\n",
6425 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
6427 pr_err("Cannot open %s: %s\n",
6428 dev
, strerror(errno
));
6431 /* Well, it is in use by someone, maybe an 'imsm' container. */
6432 cfd
= open_container(fd
);
6436 pr_err("Cannot use %s: It is busy\n",
6440 sra
= sysfs_read(cfd
, NULL
, GET_VERSION
);
6441 if (sra
&& sra
->array
.major_version
== -1 &&
6442 strcmp(sra
->text_version
, "imsm") == 0)
6446 /* This is a member of a imsm container. Load the container
6447 * and try to create a volume
6449 struct intel_super
*super
;
6451 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
, NULL
, 1) == 0) {
6453 strcpy(st
->container_devnm
, fd2devnm(cfd
));
6455 return validate_geometry_imsm_volume(st
, level
, layout
,
6457 size
, data_offset
, dev
,
6464 pr_err("failed container membership check\n");
6470 static void default_geometry_imsm(struct supertype
*st
, int *level
, int *layout
, int *chunk
)
6472 struct intel_super
*super
= st
->sb
;
6474 if (level
&& *level
== UnSet
)
6475 *level
= LEVEL_CONTAINER
;
6477 if (level
&& layout
&& *layout
== UnSet
)
6478 *layout
= imsm_level_to_layout(*level
);
6480 if (chunk
&& (*chunk
== UnSet
|| *chunk
== 0))
6481 *chunk
= imsm_default_chunk(super
->orom
);
6484 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
);
6486 static int kill_subarray_imsm(struct supertype
*st
)
6488 /* remove the subarray currently referenced by ->current_vol */
6490 struct intel_dev
**dp
;
6491 struct intel_super
*super
= st
->sb
;
6492 __u8 current_vol
= super
->current_vol
;
6493 struct imsm_super
*mpb
= super
->anchor
;
6495 if (super
->current_vol
< 0)
6497 super
->current_vol
= -1; /* invalidate subarray cursor */
6499 /* block deletions that would change the uuid of active subarrays
6501 * FIXME when immutable ids are available, but note that we'll
6502 * also need to fixup the invalidated/active subarray indexes in
6505 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6508 if (i
< current_vol
)
6510 sprintf(subarray
, "%u", i
);
6511 if (is_subarray_active(subarray
, st
->devnm
)) {
6512 pr_err("deleting subarray-%d would change the UUID of active subarray-%d, aborting\n",
6519 if (st
->update_tail
) {
6520 struct imsm_update_kill_array
*u
= xmalloc(sizeof(*u
));
6522 u
->type
= update_kill_array
;
6523 u
->dev_idx
= current_vol
;
6524 append_metadata_update(st
, u
, sizeof(*u
));
6529 for (dp
= &super
->devlist
; *dp
;)
6530 if ((*dp
)->index
== current_vol
) {
6533 handle_missing(super
, (*dp
)->dev
);
6534 if ((*dp
)->index
> current_vol
)
6539 /* no more raid devices, all active components are now spares,
6540 * but of course failed are still failed
6542 if (--mpb
->num_raid_devs
== 0) {
6545 for (d
= super
->disks
; d
; d
= d
->next
)
6550 super
->updates_pending
++;
6555 static int update_subarray_imsm(struct supertype
*st
, char *subarray
,
6556 char *update
, struct mddev_ident
*ident
)
6558 /* update the subarray currently referenced by ->current_vol */
6559 struct intel_super
*super
= st
->sb
;
6560 struct imsm_super
*mpb
= super
->anchor
;
6562 if (strcmp(update
, "name") == 0) {
6563 char *name
= ident
->name
;
6567 if (is_subarray_active(subarray
, st
->devnm
)) {
6568 pr_err("Unable to update name of active subarray\n");
6572 if (!check_name(super
, name
, 0))
6575 vol
= strtoul(subarray
, &ep
, 10);
6576 if (*ep
!= '\0' || vol
>= super
->anchor
->num_raid_devs
)
6579 if (st
->update_tail
) {
6580 struct imsm_update_rename_array
*u
= xmalloc(sizeof(*u
));
6582 u
->type
= update_rename_array
;
6584 snprintf((char *) u
->name
, MAX_RAID_SERIAL_LEN
, "%s", name
);
6585 append_metadata_update(st
, u
, sizeof(*u
));
6587 struct imsm_dev
*dev
;
6590 dev
= get_imsm_dev(super
, vol
);
6591 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
6592 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6593 dev
= get_imsm_dev(super
, i
);
6594 handle_missing(super
, dev
);
6596 super
->updates_pending
++;
6603 #endif /* MDASSEMBLE */
6605 static int is_gen_migration(struct imsm_dev
*dev
)
6610 if (!dev
->vol
.migr_state
)
6613 if (migr_type(dev
) == MIGR_GEN_MIGR
)
6619 static int is_rebuilding(struct imsm_dev
*dev
)
6621 struct imsm_map
*migr_map
;
6623 if (!dev
->vol
.migr_state
)
6626 if (migr_type(dev
) != MIGR_REBUILD
)
6629 migr_map
= get_imsm_map(dev
, MAP_1
);
6631 if (migr_map
->map_state
== IMSM_T_STATE_DEGRADED
)
6638 static int is_initializing(struct imsm_dev
*dev
)
6640 struct imsm_map
*migr_map
;
6642 if (!dev
->vol
.migr_state
)
6645 if (migr_type(dev
) != MIGR_INIT
)
6648 migr_map
= get_imsm_map(dev
, MAP_1
);
6650 if (migr_map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
6657 static void update_recovery_start(struct intel_super
*super
,
6658 struct imsm_dev
*dev
,
6659 struct mdinfo
*array
)
6661 struct mdinfo
*rebuild
= NULL
;
6665 if (!is_rebuilding(dev
))
6668 /* Find the rebuild target, but punt on the dual rebuild case */
6669 for (d
= array
->devs
; d
; d
= d
->next
)
6670 if (d
->recovery_start
== 0) {
6677 /* (?) none of the disks are marked with
6678 * IMSM_ORD_REBUILD, so assume they are missing and the
6679 * disk_ord_tbl was not correctly updated
6681 dprintf("failed to locate out-of-sync disk\n");
6685 units
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
6686 rebuild
->recovery_start
= units
* blocks_per_migr_unit(super
, dev
);
6690 static int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
);
6693 static struct mdinfo
*container_content_imsm(struct supertype
*st
, char *subarray
)
6695 /* Given a container loaded by load_super_imsm_all,
6696 * extract information about all the arrays into
6698 * If 'subarray' is given, just extract info about that array.
6700 * For each imsm_dev create an mdinfo, fill it in,
6701 * then look for matching devices in super->disks
6702 * and create appropriate device mdinfo.
6704 struct intel_super
*super
= st
->sb
;
6705 struct imsm_super
*mpb
= super
->anchor
;
6706 struct mdinfo
*rest
= NULL
;
6710 int spare_disks
= 0;
6712 /* do not assemble arrays when not all attributes are supported */
6713 if (imsm_check_attributes(mpb
->attributes
) == 0) {
6715 pr_err("Unsupported attributes in IMSM metadata.Arrays activation is blocked.\n");
6718 /* check for bad blocks */
6719 if (imsm_bbm_log_size(super
->anchor
)) {
6720 pr_err("BBM log found in IMSM metadata.Arrays activation is blocked.\n");
6724 /* count spare devices, not used in maps
6726 for (d
= super
->disks
; d
; d
= d
->next
)
6730 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
6731 struct imsm_dev
*dev
;
6732 struct imsm_map
*map
;
6733 struct imsm_map
*map2
;
6734 struct mdinfo
*this;
6742 (i
!= strtoul(subarray
, &ep
, 10) || *ep
!= '\0'))
6745 dev
= get_imsm_dev(super
, i
);
6746 map
= get_imsm_map(dev
, MAP_0
);
6747 map2
= get_imsm_map(dev
, MAP_1
);
6749 /* do not publish arrays that are in the middle of an
6750 * unsupported migration
6752 if (dev
->vol
.migr_state
&&
6753 (migr_type(dev
) == MIGR_STATE_CHANGE
)) {
6754 pr_err("cannot assemble volume '%.16s': unsupported migration in progress\n",
6758 /* do not publish arrays that are not support by controller's
6762 this = xmalloc(sizeof(*this));
6764 super
->current_vol
= i
;
6765 getinfo_super_imsm_volume(st
, this, NULL
);
6768 chunk
= __le16_to_cpu(map
->blocks_per_strip
) >> 1;
6769 /* mdadm does not support all metadata features- set the bit in all arrays state */
6770 if (!validate_geometry_imsm_orom(super
,
6771 get_imsm_raid_level(map
), /* RAID level */
6772 imsm_level_to_layout(get_imsm_raid_level(map
)),
6773 map
->num_members
, /* raid disks */
6774 &chunk
, join_u32(dev
->size_low
, dev
->size_high
),
6776 pr_err("IMSM RAID geometry validation failed. Array %s activation is blocked.\n",
6778 this->array
.state
|=
6779 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
6780 (1<<MD_SB_BLOCK_VOLUME
);
6784 /* if array has bad blocks, set suitable bit in all arrays state */
6786 this->array
.state
|=
6787 (1<<MD_SB_BLOCK_CONTAINER_RESHAPE
) |
6788 (1<<MD_SB_BLOCK_VOLUME
);
6790 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
6791 unsigned long long recovery_start
;
6792 struct mdinfo
*info_d
;
6799 idx
= get_imsm_disk_idx(dev
, slot
, MAP_0
);
6800 ord
= get_imsm_ord_tbl_ent(dev
, slot
, MAP_X
);
6801 for (d
= super
->disks
; d
; d
= d
->next
)
6802 if (d
->index
== idx
)
6805 recovery_start
= MaxSector
;
6808 if (d
&& is_failed(&d
->disk
))
6810 if (ord
& IMSM_ORD_REBUILD
)
6814 * if we skip some disks the array will be assmebled degraded;
6815 * reset resync start to avoid a dirty-degraded
6816 * situation when performing the intial sync
6818 * FIXME handle dirty degraded
6820 if ((skip
|| recovery_start
== 0) && !dev
->vol
.dirty
)
6821 this->resync_start
= MaxSector
;
6825 info_d
= xcalloc(1, sizeof(*info_d
));
6826 info_d
->next
= this->devs
;
6827 this->devs
= info_d
;
6829 info_d
->disk
.number
= d
->index
;
6830 info_d
->disk
.major
= d
->major
;
6831 info_d
->disk
.minor
= d
->minor
;
6832 info_d
->disk
.raid_disk
= slot
;
6833 info_d
->recovery_start
= recovery_start
;
6835 if (slot
< map2
->num_members
)
6836 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
6838 this->array
.spare_disks
++;
6840 if (slot
< map
->num_members
)
6841 info_d
->disk
.state
= (1 << MD_DISK_ACTIVE
);
6843 this->array
.spare_disks
++;
6845 if (info_d
->recovery_start
== MaxSector
)
6846 this->array
.working_disks
++;
6848 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
6849 info_d
->data_offset
= pba_of_lba0(map
);
6850 info_d
->component_size
= blocks_per_member(map
);
6852 /* now that the disk list is up-to-date fixup recovery_start */
6853 update_recovery_start(super
, dev
, this);
6854 this->array
.spare_disks
+= spare_disks
;
6857 /* check for reshape */
6858 if (this->reshape_active
== 1)
6859 recover_backup_imsm(st
, this);
6867 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
,
6868 int failed
, int look_in_map
)
6870 struct imsm_map
*map
;
6872 map
= get_imsm_map(dev
, look_in_map
);
6875 return map
->map_state
== IMSM_T_STATE_UNINITIALIZED
?
6876 IMSM_T_STATE_UNINITIALIZED
: IMSM_T_STATE_NORMAL
;
6878 switch (get_imsm_raid_level(map
)) {
6880 return IMSM_T_STATE_FAILED
;
6883 if (failed
< map
->num_members
)
6884 return IMSM_T_STATE_DEGRADED
;
6886 return IMSM_T_STATE_FAILED
;
6891 * check to see if any mirrors have failed, otherwise we
6892 * are degraded. Even numbered slots are mirrored on
6896 /* gcc -Os complains that this is unused */
6897 int insync
= insync
;
6899 for (i
= 0; i
< map
->num_members
; i
++) {
6900 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
, MAP_X
);
6901 int idx
= ord_to_idx(ord
);
6902 struct imsm_disk
*disk
;
6904 /* reset the potential in-sync count on even-numbered
6905 * slots. num_copies is always 2 for imsm raid10
6910 disk
= get_imsm_disk(super
, idx
);
6911 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
6914 /* no in-sync disks left in this mirror the
6918 return IMSM_T_STATE_FAILED
;
6921 return IMSM_T_STATE_DEGRADED
;
6925 return IMSM_T_STATE_DEGRADED
;
6927 return IMSM_T_STATE_FAILED
;
6933 return map
->map_state
;
6936 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
,
6941 struct imsm_disk
*disk
;
6942 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
6943 struct imsm_map
*prev
= get_imsm_map(dev
, MAP_1
);
6944 struct imsm_map
*map_for_loop
;
6949 /* at the beginning of migration we set IMSM_ORD_REBUILD on
6950 * disks that are being rebuilt. New failures are recorded to
6951 * map[0]. So we look through all the disks we started with and
6952 * see if any failures are still present, or if any new ones
6956 if (prev
&& (map
->num_members
< prev
->num_members
))
6957 map_for_loop
= prev
;
6959 for (i
= 0; i
< map_for_loop
->num_members
; i
++) {
6961 /* when MAP_X is passed both maps failures are counted
6964 ((look_in_map
== MAP_1
) || (look_in_map
== MAP_X
)) &&
6965 (i
< prev
->num_members
)) {
6966 ord
= __le32_to_cpu(prev
->disk_ord_tbl
[i
]);
6967 idx_1
= ord_to_idx(ord
);
6969 disk
= get_imsm_disk(super
, idx_1
);
6970 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
6973 if (((look_in_map
== MAP_0
) || (look_in_map
== MAP_X
)) &&
6974 (i
< map
->num_members
)) {
6975 ord
= __le32_to_cpu(map
->disk_ord_tbl
[i
]);
6976 idx
= ord_to_idx(ord
);
6979 disk
= get_imsm_disk(super
, idx
);
6980 if (!disk
|| is_failed(disk
) ||
6981 ord
& IMSM_ORD_REBUILD
)
6991 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
6994 struct intel_super
*super
= c
->sb
;
6995 struct imsm_super
*mpb
= super
->anchor
;
6997 if (atoi(inst
) >= mpb
->num_raid_devs
) {
6998 pr_err("subarry index %d, out of range\n", atoi(inst
));
7002 dprintf("imsm: open_new %s\n", inst
);
7003 a
->info
.container_member
= atoi(inst
);
7007 static int is_resyncing(struct imsm_dev
*dev
)
7009 struct imsm_map
*migr_map
;
7011 if (!dev
->vol
.migr_state
)
7014 if (migr_type(dev
) == MIGR_INIT
||
7015 migr_type(dev
) == MIGR_REPAIR
)
7018 if (migr_type(dev
) == MIGR_GEN_MIGR
)
7021 migr_map
= get_imsm_map(dev
, MAP_1
);
7023 if ((migr_map
->map_state
== IMSM_T_STATE_NORMAL
) &&
7024 (dev
->vol
.migr_type
!= MIGR_GEN_MIGR
))
7030 /* return true if we recorded new information */
7031 static int mark_failure(struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
7035 struct imsm_map
*map
;
7036 char buf
[MAX_RAID_SERIAL_LEN
+3];
7037 unsigned int len
, shift
= 0;
7039 /* new failures are always set in map[0] */
7040 map
= get_imsm_map(dev
, MAP_0
);
7042 slot
= get_imsm_disk_slot(map
, idx
);
7046 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
7047 if (is_failed(disk
) && (ord
& IMSM_ORD_REBUILD
))
7050 memcpy(buf
, disk
->serial
, MAX_RAID_SERIAL_LEN
);
7051 buf
[MAX_RAID_SERIAL_LEN
] = '\000';
7053 if ((len
= strlen(buf
)) >= MAX_RAID_SERIAL_LEN
)
7054 shift
= len
- MAX_RAID_SERIAL_LEN
+ 1;
7055 strncpy((char *)disk
->serial
, &buf
[shift
], MAX_RAID_SERIAL_LEN
);
7057 disk
->status
|= FAILED_DISK
;
7058 set_imsm_ord_tbl_ent(map
, slot
, idx
| IMSM_ORD_REBUILD
);
7059 /* mark failures in second map if second map exists and this disk
7061 * This is valid for migration, initialization and rebuild
7063 if (dev
->vol
.migr_state
) {
7064 struct imsm_map
*map2
= get_imsm_map(dev
, MAP_1
);
7065 int slot2
= get_imsm_disk_slot(map2
, idx
);
7067 if ((slot2
< map2
->num_members
) &&
7069 set_imsm_ord_tbl_ent(map2
, slot2
,
7070 idx
| IMSM_ORD_REBUILD
);
7072 if (map
->failed_disk_num
== 0xff)
7073 map
->failed_disk_num
= slot
;
7077 static void mark_missing(struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
7079 mark_failure(dev
, disk
, idx
);
7081 if (disk
->scsi_id
== __cpu_to_le32(~(__u32
)0))
7084 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
7085 memmove(&disk
->serial
[0], &disk
->serial
[1], MAX_RAID_SERIAL_LEN
- 1);
7088 static void handle_missing(struct intel_super
*super
, struct imsm_dev
*dev
)
7092 if (!super
->missing
)
7095 /* When orom adds replacement for missing disk it does
7096 * not remove entry of missing disk, but just updates map with
7097 * new added disk. So it is not enough just to test if there is
7098 * any missing disk, we have to look if there are any failed disks
7099 * in map to stop migration */
7101 dprintf("imsm: mark missing\n");
7102 /* end process for initialization and rebuild only
7104 if (is_gen_migration(dev
) == 0) {
7108 failed
= imsm_count_failed(super
, dev
, MAP_0
);
7109 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7112 end_migration(dev
, super
, map_state
);
7114 for (dl
= super
->missing
; dl
; dl
= dl
->next
)
7115 mark_missing(dev
, &dl
->disk
, dl
->index
);
7116 super
->updates_pending
++;
7119 static unsigned long long imsm_set_array_size(struct imsm_dev
*dev
,
7122 int used_disks
= imsm_num_data_members(dev
, MAP_0
);
7123 unsigned long long array_blocks
;
7124 struct imsm_map
*map
;
7126 if (used_disks
== 0) {
7127 /* when problems occures
7128 * return current array_blocks value
7130 array_blocks
= __le32_to_cpu(dev
->size_high
);
7131 array_blocks
= array_blocks
<< 32;
7132 array_blocks
+= __le32_to_cpu(dev
->size_low
);
7134 return array_blocks
;
7137 /* set array size in metadata
7139 if (new_size
<= 0) {
7140 /* OLCE size change is caused by added disks
7142 map
= get_imsm_map(dev
, MAP_0
);
7143 array_blocks
= blocks_per_member(map
) * used_disks
;
7145 /* Online Volume Size Change
7146 * Using available free space
7148 array_blocks
= new_size
;
7151 /* round array size down to closest MB
7153 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
7154 dev
->size_low
= __cpu_to_le32((__u32
)array_blocks
);
7155 dev
->size_high
= __cpu_to_le32((__u32
)(array_blocks
>> 32));
7157 return array_blocks
;
7160 static void imsm_set_disk(struct active_array
*a
, int n
, int state
);
7162 static void imsm_progress_container_reshape(struct intel_super
*super
)
7164 /* if no device has a migr_state, but some device has a
7165 * different number of members than the previous device, start
7166 * changing the number of devices in this device to match
7169 struct imsm_super
*mpb
= super
->anchor
;
7170 int prev_disks
= -1;
7174 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7175 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
7176 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7177 struct imsm_map
*map2
;
7178 int prev_num_members
;
7180 if (dev
->vol
.migr_state
)
7183 if (prev_disks
== -1)
7184 prev_disks
= map
->num_members
;
7185 if (prev_disks
== map
->num_members
)
7188 /* OK, this array needs to enter reshape mode.
7189 * i.e it needs a migr_state
7192 copy_map_size
= sizeof_imsm_map(map
);
7193 prev_num_members
= map
->num_members
;
7194 map
->num_members
= prev_disks
;
7195 dev
->vol
.migr_state
= 1;
7196 dev
->vol
.curr_migr_unit
= 0;
7197 set_migr_type(dev
, MIGR_GEN_MIGR
);
7198 for (i
= prev_num_members
;
7199 i
< map
->num_members
; i
++)
7200 set_imsm_ord_tbl_ent(map
, i
, i
);
7201 map2
= get_imsm_map(dev
, MAP_1
);
7202 /* Copy the current map */
7203 memcpy(map2
, map
, copy_map_size
);
7204 map2
->num_members
= prev_num_members
;
7206 imsm_set_array_size(dev
, -1);
7207 super
->clean_migration_record_by_mdmon
= 1;
7208 super
->updates_pending
++;
7212 /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild
7213 * states are handled in imsm_set_disk() with one exception, when a
7214 * resync is stopped due to a new failure this routine will set the
7215 * 'degraded' state for the array.
7217 static int imsm_set_array_state(struct active_array
*a
, int consistent
)
7219 int inst
= a
->info
.container_member
;
7220 struct intel_super
*super
= a
->container
->sb
;
7221 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7222 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7223 int failed
= imsm_count_failed(super
, dev
, MAP_0
);
7224 __u8 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7225 __u32 blocks_per_unit
;
7227 if (dev
->vol
.migr_state
&&
7228 dev
->vol
.migr_type
== MIGR_GEN_MIGR
) {
7229 /* array state change is blocked due to reshape action
7231 * - abort the reshape (if last_checkpoint is 0 and action!= reshape)
7232 * - finish the reshape (if last_checkpoint is big and action != reshape)
7233 * - update curr_migr_unit
7235 if (a
->curr_action
== reshape
) {
7236 /* still reshaping, maybe update curr_migr_unit */
7237 goto mark_checkpoint
;
7239 if (a
->last_checkpoint
== 0 && a
->prev_action
== reshape
) {
7240 /* for some reason we aborted the reshape.
7242 * disable automatic metadata rollback
7243 * user action is required to recover process
7246 struct imsm_map
*map2
=
7247 get_imsm_map(dev
, MAP_1
);
7248 dev
->vol
.migr_state
= 0;
7249 set_migr_type(dev
, 0);
7250 dev
->vol
.curr_migr_unit
= 0;
7252 sizeof_imsm_map(map2
));
7253 super
->updates_pending
++;
7256 if (a
->last_checkpoint
>= a
->info
.component_size
) {
7257 unsigned long long array_blocks
;
7261 used_disks
= imsm_num_data_members(dev
, MAP_0
);
7262 if (used_disks
> 0) {
7264 blocks_per_member(map
) *
7266 /* round array size down to closest MB
7268 array_blocks
= (array_blocks
7269 >> SECT_PER_MB_SHIFT
)
7270 << SECT_PER_MB_SHIFT
;
7271 a
->info
.custom_array_size
= array_blocks
;
7272 /* encourage manager to update array
7276 a
->check_reshape
= 1;
7278 /* finalize online capacity expansion/reshape */
7279 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
7281 mdi
->disk
.raid_disk
,
7284 imsm_progress_container_reshape(super
);
7289 /* before we activate this array handle any missing disks */
7290 if (consistent
== 2)
7291 handle_missing(super
, dev
);
7293 if (consistent
== 2 &&
7294 (!is_resync_complete(&a
->info
) ||
7295 map_state
!= IMSM_T_STATE_NORMAL
||
7296 dev
->vol
.migr_state
))
7299 if (is_resync_complete(&a
->info
)) {
7300 /* complete intialization / resync,
7301 * recovery and interrupted recovery is completed in
7304 if (is_resyncing(dev
)) {
7305 dprintf("imsm: mark resync done\n");
7306 end_migration(dev
, super
, map_state
);
7307 super
->updates_pending
++;
7308 a
->last_checkpoint
= 0;
7310 } else if ((!is_resyncing(dev
) && !failed
) &&
7311 (imsm_reshape_blocks_arrays_changes(super
) == 0)) {
7312 /* mark the start of the init process if nothing is failed */
7313 dprintf("imsm: mark resync start\n");
7314 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
7315 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_INIT
);
7317 migrate(dev
, super
, IMSM_T_STATE_NORMAL
, MIGR_REPAIR
);
7318 super
->updates_pending
++;
7322 /* skip checkpointing for general migration,
7323 * it is controlled in mdadm
7325 if (is_gen_migration(dev
))
7326 goto skip_mark_checkpoint
;
7328 /* check if we can update curr_migr_unit from resync_start, recovery_start */
7329 blocks_per_unit
= blocks_per_migr_unit(super
, dev
);
7330 if (blocks_per_unit
) {
7334 units
= a
->last_checkpoint
/ blocks_per_unit
;
7337 /* check that we did not overflow 32-bits, and that
7338 * curr_migr_unit needs updating
7340 if (units32
== units
&&
7342 __le32_to_cpu(dev
->vol
.curr_migr_unit
) != units32
) {
7343 dprintf("imsm: mark checkpoint (%u)\n", units32
);
7344 dev
->vol
.curr_migr_unit
= __cpu_to_le32(units32
);
7345 super
->updates_pending
++;
7349 skip_mark_checkpoint
:
7350 /* mark dirty / clean */
7351 if (dev
->vol
.dirty
!= !consistent
) {
7352 dprintf("imsm: mark '%s'\n", consistent
? "clean" : "dirty");
7357 super
->updates_pending
++;
7363 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
7365 int inst
= a
->info
.container_member
;
7366 struct intel_super
*super
= a
->container
->sb
;
7367 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7368 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7369 struct imsm_disk
*disk
;
7371 int recovery_not_finished
= 0;
7376 if (n
> map
->num_members
)
7377 pr_err("imsm: set_disk %d out of range 0..%d\n",
7378 n
, map
->num_members
- 1);
7383 dprintf("imsm: set_disk %d:%x\n", n
, state
);
7385 ord
= get_imsm_ord_tbl_ent(dev
, n
, MAP_0
);
7386 disk
= get_imsm_disk(super
, ord_to_idx(ord
));
7388 /* check for new failures */
7389 if (state
& DS_FAULTY
) {
7390 if (mark_failure(dev
, disk
, ord_to_idx(ord
)))
7391 super
->updates_pending
++;
7394 /* check if in_sync */
7395 if (state
& DS_INSYNC
&& ord
& IMSM_ORD_REBUILD
&& is_rebuilding(dev
)) {
7396 struct imsm_map
*migr_map
= get_imsm_map(dev
, MAP_1
);
7398 set_imsm_ord_tbl_ent(migr_map
, n
, ord_to_idx(ord
));
7399 super
->updates_pending
++;
7402 failed
= imsm_count_failed(super
, dev
, MAP_0
);
7403 map_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
7405 /* check if recovery complete, newly degraded, or failed */
7406 dprintf("imsm: Detected transition to state ");
7407 switch (map_state
) {
7408 case IMSM_T_STATE_NORMAL
: /* transition to normal state */
7409 dprintf("normal: ");
7410 if (is_rebuilding(dev
)) {
7411 dprintf_cont("while rebuilding");
7412 /* check if recovery is really finished */
7413 for (mdi
= a
->info
.devs
; mdi
; mdi
= mdi
->next
)
7414 if (mdi
->recovery_start
!= MaxSector
) {
7415 recovery_not_finished
= 1;
7418 if (recovery_not_finished
) {
7420 dprintf("Rebuild has not finished yet, state not changed");
7421 if (a
->last_checkpoint
< mdi
->recovery_start
) {
7422 a
->last_checkpoint
= mdi
->recovery_start
;
7423 super
->updates_pending
++;
7427 end_migration(dev
, super
, map_state
);
7428 map
= get_imsm_map(dev
, MAP_0
);
7429 map
->failed_disk_num
= ~0;
7430 super
->updates_pending
++;
7431 a
->last_checkpoint
= 0;
7434 if (is_gen_migration(dev
)) {
7435 dprintf_cont("while general migration");
7436 if (a
->last_checkpoint
>= a
->info
.component_size
)
7437 end_migration(dev
, super
, map_state
);
7439 map
->map_state
= map_state
;
7440 map
= get_imsm_map(dev
, MAP_0
);
7441 map
->failed_disk_num
= ~0;
7442 super
->updates_pending
++;
7446 case IMSM_T_STATE_DEGRADED
: /* transition to degraded state */
7447 dprintf_cont("degraded: ");
7448 if ((map
->map_state
!= map_state
) &&
7449 !dev
->vol
.migr_state
) {
7450 dprintf_cont("mark degraded");
7451 map
->map_state
= map_state
;
7452 super
->updates_pending
++;
7453 a
->last_checkpoint
= 0;
7456 if (is_rebuilding(dev
)) {
7457 dprintf_cont("while rebuilding.");
7458 if (map
->map_state
!= map_state
) {
7459 dprintf_cont(" Map state change");
7460 end_migration(dev
, super
, map_state
);
7461 super
->updates_pending
++;
7465 if (is_gen_migration(dev
)) {
7466 dprintf_cont("while general migration");
7467 if (a
->last_checkpoint
>= a
->info
.component_size
)
7468 end_migration(dev
, super
, map_state
);
7470 map
->map_state
= map_state
;
7471 manage_second_map(super
, dev
);
7473 super
->updates_pending
++;
7476 if (is_initializing(dev
)) {
7477 dprintf_cont("while initialization.");
7478 map
->map_state
= map_state
;
7479 super
->updates_pending
++;
7483 case IMSM_T_STATE_FAILED
: /* transition to failed state */
7484 dprintf_cont("failed: ");
7485 if (is_gen_migration(dev
)) {
7486 dprintf_cont("while general migration");
7487 map
->map_state
= map_state
;
7488 super
->updates_pending
++;
7491 if (map
->map_state
!= map_state
) {
7492 dprintf_cont("mark failed");
7493 end_migration(dev
, super
, map_state
);
7494 super
->updates_pending
++;
7495 a
->last_checkpoint
= 0;
7500 dprintf_cont("state %i\n", map_state
);
7505 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
)
7508 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
7509 unsigned long long dsize
;
7510 unsigned long long sectors
;
7512 get_dev_size(fd
, NULL
, &dsize
);
7514 if (mpb_size
> 512) {
7515 /* -1 to account for anchor */
7516 sectors
= mpb_sectors(mpb
) - 1;
7518 /* write the extended mpb to the sectors preceeding the anchor */
7519 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0)
7522 if ((unsigned long long)write(fd
, buf
+ 512, 512 * sectors
)
7527 /* first block is stored on second to last sector of the disk */
7528 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
7531 if (write(fd
, buf
, 512) != 512)
7537 static void imsm_sync_metadata(struct supertype
*container
)
7539 struct intel_super
*super
= container
->sb
;
7541 dprintf("sync metadata: %d\n", super
->updates_pending
);
7542 if (!super
->updates_pending
)
7545 write_super_imsm(container
, 0);
7547 super
->updates_pending
= 0;
7550 static struct dl
*imsm_readd(struct intel_super
*super
, int idx
, struct active_array
*a
)
7552 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
7553 int i
= get_imsm_disk_idx(dev
, idx
, MAP_X
);
7556 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
7560 if (dl
&& is_failed(&dl
->disk
))
7564 dprintf("found %x:%x\n", dl
->major
, dl
->minor
);
7569 static struct dl
*imsm_add_spare(struct intel_super
*super
, int slot
,
7570 struct active_array
*a
, int activate_new
,
7571 struct mdinfo
*additional_test_list
)
7573 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
7574 int idx
= get_imsm_disk_idx(dev
, slot
, MAP_X
);
7575 struct imsm_super
*mpb
= super
->anchor
;
7576 struct imsm_map
*map
;
7577 unsigned long long pos
;
7582 __u32 array_start
= 0;
7583 __u32 array_end
= 0;
7585 struct mdinfo
*test_list
;
7587 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
7588 /* If in this array, skip */
7589 for (d
= a
->info
.devs
; d
; d
= d
->next
)
7590 if (d
->state_fd
>= 0 &&
7591 d
->disk
.major
== dl
->major
&&
7592 d
->disk
.minor
== dl
->minor
) {
7593 dprintf("%x:%x already in array\n",
7594 dl
->major
, dl
->minor
);
7599 test_list
= additional_test_list
;
7601 if (test_list
->disk
.major
== dl
->major
&&
7602 test_list
->disk
.minor
== dl
->minor
) {
7603 dprintf("%x:%x already in additional test list\n",
7604 dl
->major
, dl
->minor
);
7607 test_list
= test_list
->next
;
7612 /* skip in use or failed drives */
7613 if (is_failed(&dl
->disk
) || idx
== dl
->index
||
7615 dprintf("%x:%x status (failed: %d index: %d)\n",
7616 dl
->major
, dl
->minor
, is_failed(&dl
->disk
), idx
);
7620 /* skip pure spares when we are looking for partially
7621 * assimilated drives
7623 if (dl
->index
== -1 && !activate_new
)
7626 /* Does this unused device have the requisite free space?
7627 * It needs to be able to cover all member volumes
7629 ex
= get_extents(super
, dl
);
7631 dprintf("cannot get extents\n");
7634 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
7635 dev
= get_imsm_dev(super
, i
);
7636 map
= get_imsm_map(dev
, MAP_0
);
7638 /* check if this disk is already a member of
7641 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
7647 array_start
= pba_of_lba0(map
);
7648 array_end
= array_start
+
7649 blocks_per_member(map
) - 1;
7652 /* check that we can start at pba_of_lba0 with
7653 * blocks_per_member of space
7655 if (array_start
>= pos
&& array_end
< ex
[j
].start
) {
7659 pos
= ex
[j
].start
+ ex
[j
].size
;
7661 } while (ex
[j
-1].size
);
7668 if (i
< mpb
->num_raid_devs
) {
7669 dprintf("%x:%x does not have %u to %u available\n",
7670 dl
->major
, dl
->minor
, array_start
, array_end
);
7680 static int imsm_rebuild_allowed(struct supertype
*cont
, int dev_idx
, int failed
)
7682 struct imsm_dev
*dev2
;
7683 struct imsm_map
*map
;
7689 dev2
= get_imsm_dev(cont
->sb
, dev_idx
);
7691 state
= imsm_check_degraded(cont
->sb
, dev2
, failed
, MAP_0
);
7692 if (state
== IMSM_T_STATE_FAILED
) {
7693 map
= get_imsm_map(dev2
, MAP_0
);
7696 for (slot
= 0; slot
< map
->num_members
; slot
++) {
7698 * Check if failed disks are deleted from intel
7699 * disk list or are marked to be deleted
7701 idx
= get_imsm_disk_idx(dev2
, slot
, MAP_X
);
7702 idisk
= get_imsm_dl_disk(cont
->sb
, idx
);
7704 * Do not rebuild the array if failed disks
7705 * from failed sub-array are not removed from
7709 is_failed(&idisk
->disk
) &&
7710 (idisk
->action
!= DISK_REMOVE
))
7718 static struct mdinfo
*imsm_activate_spare(struct active_array
*a
,
7719 struct metadata_update
**updates
)
7722 * Find a device with unused free space and use it to replace a
7723 * failed/vacant region in an array. We replace failed regions one a
7724 * array at a time. The result is that a new spare disk will be added
7725 * to the first failed array and after the monitor has finished
7726 * propagating failures the remainder will be consumed.
7728 * FIXME add a capability for mdmon to request spares from another
7732 struct intel_super
*super
= a
->container
->sb
;
7733 int inst
= a
->info
.container_member
;
7734 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
7735 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7736 int failed
= a
->info
.array
.raid_disks
;
7737 struct mdinfo
*rv
= NULL
;
7740 struct metadata_update
*mu
;
7742 struct imsm_update_activate_spare
*u
;
7747 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
7748 if ((d
->curr_state
& DS_FAULTY
) &&
7750 /* wait for Removal to happen */
7752 if (d
->state_fd
>= 0)
7756 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
7757 inst
, failed
, a
->info
.array
.raid_disks
, a
->info
.array
.level
);
7759 if (imsm_reshape_blocks_arrays_changes(super
))
7762 /* Cannot activate another spare if rebuild is in progress already
7764 if (is_rebuilding(dev
)) {
7765 dprintf("imsm: No spare activation allowed. Rebuild in progress already.\n");
7769 if (a
->info
.array
.level
== 4)
7770 /* No repair for takeovered array
7771 * imsm doesn't support raid4
7775 if (imsm_check_degraded(super
, dev
, failed
, MAP_0
) !=
7776 IMSM_T_STATE_DEGRADED
)
7780 * If there are any failed disks check state of the other volume.
7781 * Block rebuild if the another one is failed until failed disks
7782 * are removed from container.
7785 dprintf("found failed disks in %.*s, check if there anotherfailed sub-array.\n",
7786 MAX_RAID_SERIAL_LEN
, dev
->volume
);
7787 /* check if states of the other volumes allow for rebuild */
7788 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
7790 allowed
= imsm_rebuild_allowed(a
->container
,
7798 /* For each slot, if it is not working, find a spare */
7799 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
7800 for (d
= a
->info
.devs
; d
; d
= d
->next
)
7801 if (d
->disk
.raid_disk
== i
)
7803 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
7804 if (d
&& (d
->state_fd
>= 0))
7808 * OK, this device needs recovery. Try to re-add the
7809 * previous occupant of this slot, if this fails see if
7810 * we can continue the assimilation of a spare that was
7811 * partially assimilated, finally try to activate a new
7814 dl
= imsm_readd(super
, i
, a
);
7816 dl
= imsm_add_spare(super
, i
, a
, 0, rv
);
7818 dl
= imsm_add_spare(super
, i
, a
, 1, rv
);
7822 /* found a usable disk with enough space */
7823 di
= xcalloc(1, sizeof(*di
));
7825 /* dl->index will be -1 in the case we are activating a
7826 * pristine spare. imsm_process_update() will create a
7827 * new index in this case. Once a disk is found to be
7828 * failed in all member arrays it is kicked from the
7831 di
->disk
.number
= dl
->index
;
7833 /* (ab)use di->devs to store a pointer to the device
7836 di
->devs
= (struct mdinfo
*) dl
;
7838 di
->disk
.raid_disk
= i
;
7839 di
->disk
.major
= dl
->major
;
7840 di
->disk
.minor
= dl
->minor
;
7842 di
->recovery_start
= 0;
7843 di
->data_offset
= pba_of_lba0(map
);
7844 di
->component_size
= a
->info
.component_size
;
7845 di
->container_member
= inst
;
7846 super
->random
= random32();
7850 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
7851 i
, di
->data_offset
);
7855 /* No spares found */
7857 /* Now 'rv' has a list of devices to return.
7858 * Create a metadata_update record to update the
7859 * disk_ord_tbl for the array
7861 mu
= xmalloc(sizeof(*mu
));
7862 mu
->buf
= xcalloc(num_spares
,
7863 sizeof(struct imsm_update_activate_spare
));
7865 mu
->space_list
= NULL
;
7866 mu
->len
= sizeof(struct imsm_update_activate_spare
) * num_spares
;
7867 mu
->next
= *updates
;
7868 u
= (struct imsm_update_activate_spare
*) mu
->buf
;
7870 for (di
= rv
; di
; di
= di
->next
) {
7871 u
->type
= update_activate_spare
;
7872 u
->dl
= (struct dl
*) di
->devs
;
7874 u
->slot
= di
->disk
.raid_disk
;
7885 static int disks_overlap(struct intel_super
*super
, int idx
, struct imsm_update_create_array
*u
)
7887 struct imsm_dev
*dev
= get_imsm_dev(super
, idx
);
7888 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
7889 struct imsm_map
*new_map
= get_imsm_map(&u
->dev
, MAP_0
);
7890 struct disk_info
*inf
= get_disk_info(u
);
7891 struct imsm_disk
*disk
;
7895 for (i
= 0; i
< map
->num_members
; i
++) {
7896 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
, MAP_X
));
7897 for (j
= 0; j
< new_map
->num_members
; j
++)
7898 if (serialcmp(disk
->serial
, inf
[j
].serial
) == 0)
7905 static struct dl
*get_disk_super(struct intel_super
*super
, int major
, int minor
)
7907 struct dl
*dl
= NULL
;
7908 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
7909 if ((dl
->major
== major
) && (dl
->minor
== minor
))
7914 static int remove_disk_super(struct intel_super
*super
, int major
, int minor
)
7916 struct dl
*prev
= NULL
;
7920 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
7921 if ((dl
->major
== major
) && (dl
->minor
== minor
)) {
7924 prev
->next
= dl
->next
;
7926 super
->disks
= dl
->next
;
7928 __free_imsm_disk(dl
);
7929 dprintf("removed %x:%x\n", major
, minor
);
7937 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
);
7939 static int add_remove_disk_update(struct intel_super
*super
)
7941 int check_degraded
= 0;
7942 struct dl
*disk
= NULL
;
7943 /* add/remove some spares to/from the metadata/contrainer */
7944 while (super
->disk_mgmt_list
) {
7945 struct dl
*disk_cfg
;
7947 disk_cfg
= super
->disk_mgmt_list
;
7948 super
->disk_mgmt_list
= disk_cfg
->next
;
7949 disk_cfg
->next
= NULL
;
7951 if (disk_cfg
->action
== DISK_ADD
) {
7952 disk_cfg
->next
= super
->disks
;
7953 super
->disks
= disk_cfg
;
7955 dprintf("added %x:%x\n",
7956 disk_cfg
->major
, disk_cfg
->minor
);
7957 } else if (disk_cfg
->action
== DISK_REMOVE
) {
7958 dprintf("Disk remove action processed: %x.%x\n",
7959 disk_cfg
->major
, disk_cfg
->minor
);
7960 disk
= get_disk_super(super
,
7964 /* store action status */
7965 disk
->action
= DISK_REMOVE
;
7966 /* remove spare disks only */
7967 if (disk
->index
== -1) {
7968 remove_disk_super(super
,
7973 /* release allocate disk structure */
7974 __free_imsm_disk(disk_cfg
);
7977 return check_degraded
;
7980 static int apply_reshape_migration_update(struct imsm_update_reshape_migration
*u
,
7981 struct intel_super
*super
,
7984 struct intel_dev
*id
;
7985 void **tofree
= NULL
;
7988 dprintf("(enter)\n");
7989 if ((u
->subdev
< 0) ||
7991 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
7994 if ((space_list
== NULL
) || (*space_list
== NULL
)) {
7995 dprintf("imsm: Error: Memory is not allocated\n");
7999 for (id
= super
->devlist
; id
; id
= id
->next
) {
8000 if (id
->index
== (unsigned)u
->subdev
) {
8001 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
8002 struct imsm_map
*map
;
8003 struct imsm_dev
*new_dev
=
8004 (struct imsm_dev
*)*space_list
;
8005 struct imsm_map
*migr_map
= get_imsm_map(dev
, MAP_1
);
8007 struct dl
*new_disk
;
8009 if (new_dev
== NULL
)
8011 *space_list
= **space_list
;
8012 memcpy(new_dev
, dev
, sizeof_imsm_dev(dev
, 0));
8013 map
= get_imsm_map(new_dev
, MAP_0
);
8015 dprintf("imsm: Error: migration in progress");
8019 to_state
= map
->map_state
;
8020 if ((u
->new_level
== 5) && (map
->raid_level
== 0)) {
8022 /* this should not happen */
8023 if (u
->new_disks
[0] < 0) {
8024 map
->failed_disk_num
=
8025 map
->num_members
- 1;
8026 to_state
= IMSM_T_STATE_DEGRADED
;
8028 to_state
= IMSM_T_STATE_NORMAL
;
8030 migrate(new_dev
, super
, to_state
, MIGR_GEN_MIGR
);
8031 if (u
->new_level
> -1)
8032 map
->raid_level
= u
->new_level
;
8033 migr_map
= get_imsm_map(new_dev
, MAP_1
);
8034 if ((u
->new_level
== 5) &&
8035 (migr_map
->raid_level
== 0)) {
8036 int ord
= map
->num_members
- 1;
8037 migr_map
->num_members
--;
8038 if (u
->new_disks
[0] < 0)
8039 ord
|= IMSM_ORD_REBUILD
;
8040 set_imsm_ord_tbl_ent(map
,
8041 map
->num_members
- 1,
8045 tofree
= (void **)dev
;
8047 /* update chunk size
8049 if (u
->new_chunksize
> 0)
8050 map
->blocks_per_strip
=
8051 __cpu_to_le16(u
->new_chunksize
* 2);
8055 if ((u
->new_level
!= 5) ||
8056 (migr_map
->raid_level
!= 0) ||
8057 (migr_map
->raid_level
== map
->raid_level
))
8060 if (u
->new_disks
[0] >= 0) {
8063 new_disk
= get_disk_super(super
,
8064 major(u
->new_disks
[0]),
8065 minor(u
->new_disks
[0]));
8066 dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n",
8067 major(u
->new_disks
[0]),
8068 minor(u
->new_disks
[0]),
8069 new_disk
, new_disk
->index
);
8070 if (new_disk
== NULL
)
8071 goto error_disk_add
;
8073 new_disk
->index
= map
->num_members
- 1;
8074 /* slot to fill in autolayout
8076 new_disk
->raiddisk
= new_disk
->index
;
8077 new_disk
->disk
.status
|= CONFIGURED_DISK
;
8078 new_disk
->disk
.status
&= ~SPARE_DISK
;
8080 goto error_disk_add
;
8083 *tofree
= *space_list
;
8084 /* calculate new size
8086 imsm_set_array_size(new_dev
, -1);
8093 *space_list
= tofree
;
8097 dprintf("Error: imsm: Cannot find disk.\n");
8101 static int apply_size_change_update(struct imsm_update_size_change
*u
,
8102 struct intel_super
*super
)
8104 struct intel_dev
*id
;
8107 dprintf("(enter)\n");
8108 if ((u
->subdev
< 0) ||
8110 dprintf("imsm: Error: Wrong subdev: %i\n", u
->subdev
);
8114 for (id
= super
->devlist
; id
; id
= id
->next
) {
8115 if (id
->index
== (unsigned)u
->subdev
) {
8116 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subdev
);
8117 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8118 int used_disks
= imsm_num_data_members(dev
, MAP_0
);
8119 unsigned long long blocks_per_member
;
8121 /* calculate new size
8123 blocks_per_member
= u
->new_size
/ used_disks
;
8124 dprintf("(size: %llu, blocks per member: %llu)\n",
8125 u
->new_size
, blocks_per_member
);
8126 set_blocks_per_member(map
, blocks_per_member
);
8127 imsm_set_array_size(dev
, u
->new_size
);
8137 static int apply_update_activate_spare(struct imsm_update_activate_spare
*u
,
8138 struct intel_super
*super
,
8139 struct active_array
*active_array
)
8141 struct imsm_super
*mpb
= super
->anchor
;
8142 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->array
);
8143 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8144 struct imsm_map
*migr_map
;
8145 struct active_array
*a
;
8146 struct imsm_disk
*disk
;
8153 int second_map_created
= 0;
8155 for (; u
; u
= u
->next
) {
8156 victim
= get_imsm_disk_idx(dev
, u
->slot
, MAP_X
);
8161 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
8166 pr_err("error: imsm_activate_spare passed an unknown disk (index: %d)\n",
8171 /* count failures (excluding rebuilds and the victim)
8172 * to determine map[0] state
8175 for (i
= 0; i
< map
->num_members
; i
++) {
8178 disk
= get_imsm_disk(super
,
8179 get_imsm_disk_idx(dev
, i
, MAP_X
));
8180 if (!disk
|| is_failed(disk
))
8184 /* adding a pristine spare, assign a new index */
8185 if (dl
->index
< 0) {
8186 dl
->index
= super
->anchor
->num_disks
;
8187 super
->anchor
->num_disks
++;
8190 disk
->status
|= CONFIGURED_DISK
;
8191 disk
->status
&= ~SPARE_DISK
;
8194 to_state
= imsm_check_degraded(super
, dev
, failed
, MAP_0
);
8195 if (!second_map_created
) {
8196 second_map_created
= 1;
8197 map
->map_state
= IMSM_T_STATE_DEGRADED
;
8198 migrate(dev
, super
, to_state
, MIGR_REBUILD
);
8200 map
->map_state
= to_state
;
8201 migr_map
= get_imsm_map(dev
, MAP_1
);
8202 set_imsm_ord_tbl_ent(map
, u
->slot
, dl
->index
);
8203 set_imsm_ord_tbl_ent(migr_map
, u
->slot
,
8204 dl
->index
| IMSM_ORD_REBUILD
);
8206 /* update the family_num to mark a new container
8207 * generation, being careful to record the existing
8208 * family_num in orig_family_num to clean up after
8209 * earlier mdadm versions that neglected to set it.
8211 if (mpb
->orig_family_num
== 0)
8212 mpb
->orig_family_num
= mpb
->family_num
;
8213 mpb
->family_num
+= super
->random
;
8215 /* count arrays using the victim in the metadata */
8217 for (a
= active_array
; a
; a
= a
->next
) {
8218 dev
= get_imsm_dev(super
, a
->info
.container_member
);
8219 map
= get_imsm_map(dev
, MAP_0
);
8221 if (get_imsm_disk_slot(map
, victim
) >= 0)
8225 /* delete the victim if it is no longer being
8231 /* We know that 'manager' isn't touching anything,
8232 * so it is safe to delete
8234 for (dlp
= &super
->disks
; *dlp
; dlp
= &(*dlp
)->next
)
8235 if ((*dlp
)->index
== victim
)
8238 /* victim may be on the missing list */
8240 for (dlp
= &super
->missing
; *dlp
;
8241 dlp
= &(*dlp
)->next
)
8242 if ((*dlp
)->index
== victim
)
8244 imsm_delete(super
, dlp
, victim
);
8251 static int apply_reshape_container_disks_update(struct imsm_update_reshape
*u
,
8252 struct intel_super
*super
,
8255 struct dl
*new_disk
;
8256 struct intel_dev
*id
;
8258 int delta_disks
= u
->new_raid_disks
- u
->old_raid_disks
;
8259 int disk_count
= u
->old_raid_disks
;
8260 void **tofree
= NULL
;
8261 int devices_to_reshape
= 1;
8262 struct imsm_super
*mpb
= super
->anchor
;
8264 unsigned int dev_id
;
8266 dprintf("(enter)\n");
8268 /* enable spares to use in array */
8269 for (i
= 0; i
< delta_disks
; i
++) {
8270 new_disk
= get_disk_super(super
,
8271 major(u
->new_disks
[i
]),
8272 minor(u
->new_disks
[i
]));
8273 dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n",
8274 major(u
->new_disks
[i
]), minor(u
->new_disks
[i
]),
8275 new_disk
, new_disk
->index
);
8276 if ((new_disk
== NULL
) ||
8277 ((new_disk
->index
>= 0) &&
8278 (new_disk
->index
< u
->old_raid_disks
)))
8279 goto update_reshape_exit
;
8280 new_disk
->index
= disk_count
++;
8281 /* slot to fill in autolayout
8283 new_disk
->raiddisk
= new_disk
->index
;
8284 new_disk
->disk
.status
|=
8286 new_disk
->disk
.status
&= ~SPARE_DISK
;
8289 dprintf("imsm: volume set mpb->num_raid_devs = %i\n",
8290 mpb
->num_raid_devs
);
8291 /* manage changes in volume
8293 for (dev_id
= 0; dev_id
< mpb
->num_raid_devs
; dev_id
++) {
8294 void **sp
= *space_list
;
8295 struct imsm_dev
*newdev
;
8296 struct imsm_map
*newmap
, *oldmap
;
8298 for (id
= super
->devlist
; id
; id
= id
->next
) {
8299 if (id
->index
== dev_id
)
8308 /* Copy the dev, but not (all of) the map */
8309 memcpy(newdev
, id
->dev
, sizeof(*newdev
));
8310 oldmap
= get_imsm_map(id
->dev
, MAP_0
);
8311 newmap
= get_imsm_map(newdev
, MAP_0
);
8312 /* Copy the current map */
8313 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
8314 /* update one device only
8316 if (devices_to_reshape
) {
8317 dprintf("imsm: modifying subdev: %i\n",
8319 devices_to_reshape
--;
8320 newdev
->vol
.migr_state
= 1;
8321 newdev
->vol
.curr_migr_unit
= 0;
8322 set_migr_type(newdev
, MIGR_GEN_MIGR
);
8323 newmap
->num_members
= u
->new_raid_disks
;
8324 for (i
= 0; i
< delta_disks
; i
++) {
8325 set_imsm_ord_tbl_ent(newmap
,
8326 u
->old_raid_disks
+ i
,
8327 u
->old_raid_disks
+ i
);
8329 /* New map is correct, now need to save old map
8331 newmap
= get_imsm_map(newdev
, MAP_1
);
8332 memcpy(newmap
, oldmap
, sizeof_imsm_map(oldmap
));
8334 imsm_set_array_size(newdev
, -1);
8337 sp
= (void **)id
->dev
;
8342 /* Clear migration record */
8343 memset(super
->migr_rec
, 0, sizeof(struct migr_record
));
8346 *space_list
= tofree
;
8349 update_reshape_exit
:
8354 static int apply_takeover_update(struct imsm_update_takeover
*u
,
8355 struct intel_super
*super
,
8358 struct imsm_dev
*dev
= NULL
;
8359 struct intel_dev
*dv
;
8360 struct imsm_dev
*dev_new
;
8361 struct imsm_map
*map
;
8365 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
8366 if (dv
->index
== (unsigned int)u
->subarray
) {
8374 map
= get_imsm_map(dev
, MAP_0
);
8376 if (u
->direction
== R10_TO_R0
) {
8377 /* Number of failed disks must be half of initial disk number */
8378 if (imsm_count_failed(super
, dev
, MAP_0
) !=
8379 (map
->num_members
/ 2))
8382 /* iterate through devices to mark removed disks as spare */
8383 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
8384 if (dm
->disk
.status
& FAILED_DISK
) {
8385 int idx
= dm
->index
;
8386 /* update indexes on the disk list */
8387 /* FIXME this loop-with-the-loop looks wrong, I'm not convinced
8388 the index values will end up being correct.... NB */
8389 for (du
= super
->disks
; du
; du
= du
->next
)
8390 if (du
->index
> idx
)
8392 /* mark as spare disk */
8397 map
->num_members
= map
->num_members
/ 2;
8398 map
->map_state
= IMSM_T_STATE_NORMAL
;
8399 map
->num_domains
= 1;
8400 map
->raid_level
= 0;
8401 map
->failed_disk_num
= -1;
8404 if (u
->direction
== R0_TO_R10
) {
8406 /* update slots in current disk list */
8407 for (dm
= super
->disks
; dm
; dm
= dm
->next
) {
8411 /* create new *missing* disks */
8412 for (i
= 0; i
< map
->num_members
; i
++) {
8413 space
= *space_list
;
8416 *space_list
= *space
;
8418 memcpy(du
, super
->disks
, sizeof(*du
));
8422 du
->index
= (i
* 2) + 1;
8423 sprintf((char *)du
->disk
.serial
,
8424 " MISSING_%d", du
->index
);
8425 sprintf((char *)du
->serial
,
8426 "MISSING_%d", du
->index
);
8427 du
->next
= super
->missing
;
8428 super
->missing
= du
;
8430 /* create new dev and map */
8431 space
= *space_list
;
8434 *space_list
= *space
;
8435 dev_new
= (void *)space
;
8436 memcpy(dev_new
, dev
, sizeof(*dev
));
8437 /* update new map */
8438 map
= get_imsm_map(dev_new
, MAP_0
);
8439 map
->num_members
= map
->num_members
* 2;
8440 map
->map_state
= IMSM_T_STATE_DEGRADED
;
8441 map
->num_domains
= 2;
8442 map
->raid_level
= 1;
8443 /* replace dev<->dev_new */
8446 /* update disk order table */
8447 for (du
= super
->disks
; du
; du
= du
->next
)
8449 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
8450 for (du
= super
->missing
; du
; du
= du
->next
)
8451 if (du
->index
>= 0) {
8452 set_imsm_ord_tbl_ent(map
, du
->index
, du
->index
);
8453 mark_missing(dv
->dev
, &du
->disk
, du
->index
);
8459 static void imsm_process_update(struct supertype
*st
,
8460 struct metadata_update
*update
)
8463 * crack open the metadata_update envelope to find the update record
8464 * update can be one of:
8465 * update_reshape_container_disks - all the arrays in the container
8466 * are being reshaped to have more devices. We need to mark
8467 * the arrays for general migration and convert selected spares
8468 * into active devices.
8469 * update_activate_spare - a spare device has replaced a failed
8470 * device in an array, update the disk_ord_tbl. If this disk is
8471 * present in all member arrays then also clear the SPARE_DISK
8473 * update_create_array
8475 * update_rename_array
8476 * update_add_remove_disk
8478 struct intel_super
*super
= st
->sb
;
8479 struct imsm_super
*mpb
;
8480 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
8482 /* update requires a larger buf but the allocation failed */
8483 if (super
->next_len
&& !super
->next_buf
) {
8484 super
->next_len
= 0;
8488 if (super
->next_buf
) {
8489 memcpy(super
->next_buf
, super
->buf
, super
->len
);
8491 super
->len
= super
->next_len
;
8492 super
->buf
= super
->next_buf
;
8494 super
->next_len
= 0;
8495 super
->next_buf
= NULL
;
8498 mpb
= super
->anchor
;
8501 case update_general_migration_checkpoint
: {
8502 struct intel_dev
*id
;
8503 struct imsm_update_general_migration_checkpoint
*u
=
8504 (void *)update
->buf
;
8506 dprintf("called for update_general_migration_checkpoint\n");
8508 /* find device under general migration */
8509 for (id
= super
->devlist
; id
; id
= id
->next
) {
8510 if (is_gen_migration(id
->dev
)) {
8511 id
->dev
->vol
.curr_migr_unit
=
8512 __cpu_to_le32(u
->curr_migr_unit
);
8513 super
->updates_pending
++;
8518 case update_takeover
: {
8519 struct imsm_update_takeover
*u
= (void *)update
->buf
;
8520 if (apply_takeover_update(u
, super
, &update
->space_list
)) {
8521 imsm_update_version_info(super
);
8522 super
->updates_pending
++;
8527 case update_reshape_container_disks
: {
8528 struct imsm_update_reshape
*u
= (void *)update
->buf
;
8529 if (apply_reshape_container_disks_update(
8530 u
, super
, &update
->space_list
))
8531 super
->updates_pending
++;
8534 case update_reshape_migration
: {
8535 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
8536 if (apply_reshape_migration_update(
8537 u
, super
, &update
->space_list
))
8538 super
->updates_pending
++;
8541 case update_size_change
: {
8542 struct imsm_update_size_change
*u
= (void *)update
->buf
;
8543 if (apply_size_change_update(u
, super
))
8544 super
->updates_pending
++;
8547 case update_activate_spare
: {
8548 struct imsm_update_activate_spare
*u
= (void *) update
->buf
;
8549 if (apply_update_activate_spare(u
, super
, st
->arrays
))
8550 super
->updates_pending
++;
8553 case update_create_array
: {
8554 /* someone wants to create a new array, we need to be aware of
8555 * a few races/collisions:
8556 * 1/ 'Create' called by two separate instances of mdadm
8557 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
8558 * devices that have since been assimilated via
8560 * In the event this update can not be carried out mdadm will
8561 * (FIX ME) notice that its update did not take hold.
8563 struct imsm_update_create_array
*u
= (void *) update
->buf
;
8564 struct intel_dev
*dv
;
8565 struct imsm_dev
*dev
;
8566 struct imsm_map
*map
, *new_map
;
8567 unsigned long long start
, end
;
8568 unsigned long long new_start
, new_end
;
8570 struct disk_info
*inf
;
8573 /* handle racing creates: first come first serve */
8574 if (u
->dev_idx
< mpb
->num_raid_devs
) {
8575 dprintf("subarray %d already defined\n", u
->dev_idx
);
8579 /* check update is next in sequence */
8580 if (u
->dev_idx
!= mpb
->num_raid_devs
) {
8581 dprintf("can not create array %d expected index %d\n",
8582 u
->dev_idx
, mpb
->num_raid_devs
);
8586 new_map
= get_imsm_map(&u
->dev
, MAP_0
);
8587 new_start
= pba_of_lba0(new_map
);
8588 new_end
= new_start
+ blocks_per_member(new_map
);
8589 inf
= get_disk_info(u
);
8591 /* handle activate_spare versus create race:
8592 * check to make sure that overlapping arrays do not include
8595 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
8596 dev
= get_imsm_dev(super
, i
);
8597 map
= get_imsm_map(dev
, MAP_0
);
8598 start
= pba_of_lba0(map
);
8599 end
= start
+ blocks_per_member(map
);
8600 if ((new_start
>= start
&& new_start
<= end
) ||
8601 (start
>= new_start
&& start
<= new_end
))
8606 if (disks_overlap(super
, i
, u
)) {
8607 dprintf("arrays overlap\n");
8612 /* check that prepare update was successful */
8613 if (!update
->space
) {
8614 dprintf("prepare update failed\n");
8618 /* check that all disks are still active before committing
8619 * changes. FIXME: could we instead handle this by creating a
8620 * degraded array? That's probably not what the user expects,
8621 * so better to drop this update on the floor.
8623 for (i
= 0; i
< new_map
->num_members
; i
++) {
8624 dl
= serial_to_dl(inf
[i
].serial
, super
);
8626 dprintf("disk disappeared\n");
8631 super
->updates_pending
++;
8633 /* convert spares to members and fixup ord_tbl */
8634 for (i
= 0; i
< new_map
->num_members
; i
++) {
8635 dl
= serial_to_dl(inf
[i
].serial
, super
);
8636 if (dl
->index
== -1) {
8637 dl
->index
= mpb
->num_disks
;
8639 dl
->disk
.status
|= CONFIGURED_DISK
;
8640 dl
->disk
.status
&= ~SPARE_DISK
;
8642 set_imsm_ord_tbl_ent(new_map
, i
, dl
->index
);
8647 update
->space
= NULL
;
8648 imsm_copy_dev(dev
, &u
->dev
);
8649 dv
->index
= u
->dev_idx
;
8650 dv
->next
= super
->devlist
;
8651 super
->devlist
= dv
;
8652 mpb
->num_raid_devs
++;
8654 imsm_update_version_info(super
);
8657 /* mdmon knows how to release update->space, but not
8658 * ((struct intel_dev *) update->space)->dev
8660 if (update
->space
) {
8666 case update_kill_array
: {
8667 struct imsm_update_kill_array
*u
= (void *) update
->buf
;
8668 int victim
= u
->dev_idx
;
8669 struct active_array
*a
;
8670 struct intel_dev
**dp
;
8671 struct imsm_dev
*dev
;
8673 /* sanity check that we are not affecting the uuid of
8674 * active arrays, or deleting an active array
8676 * FIXME when immutable ids are available, but note that
8677 * we'll also need to fixup the invalidated/active
8678 * subarray indexes in mdstat
8680 for (a
= st
->arrays
; a
; a
= a
->next
)
8681 if (a
->info
.container_member
>= victim
)
8683 /* by definition if mdmon is running at least one array
8684 * is active in the container, so checking
8685 * mpb->num_raid_devs is just extra paranoia
8687 dev
= get_imsm_dev(super
, victim
);
8688 if (a
|| !dev
|| mpb
->num_raid_devs
== 1) {
8689 dprintf("failed to delete subarray-%d\n", victim
);
8693 for (dp
= &super
->devlist
; *dp
;)
8694 if ((*dp
)->index
== (unsigned)super
->current_vol
) {
8697 if ((*dp
)->index
> (unsigned)victim
)
8701 mpb
->num_raid_devs
--;
8702 super
->updates_pending
++;
8705 case update_rename_array
: {
8706 struct imsm_update_rename_array
*u
= (void *) update
->buf
;
8707 char name
[MAX_RAID_SERIAL_LEN
+1];
8708 int target
= u
->dev_idx
;
8709 struct active_array
*a
;
8710 struct imsm_dev
*dev
;
8712 /* sanity check that we are not affecting the uuid of
8715 snprintf(name
, MAX_RAID_SERIAL_LEN
, "%s", (char *) u
->name
);
8716 name
[MAX_RAID_SERIAL_LEN
] = '\0';
8717 for (a
= st
->arrays
; a
; a
= a
->next
)
8718 if (a
->info
.container_member
== target
)
8720 dev
= get_imsm_dev(super
, u
->dev_idx
);
8721 if (a
|| !dev
|| !check_name(super
, name
, 1)) {
8722 dprintf("failed to rename subarray-%d\n", target
);
8726 snprintf((char *) dev
->volume
, MAX_RAID_SERIAL_LEN
, "%s", name
);
8727 super
->updates_pending
++;
8730 case update_add_remove_disk
: {
8731 /* we may be able to repair some arrays if disks are
8732 * being added, check the status of add_remove_disk
8733 * if discs has been added.
8735 if (add_remove_disk_update(super
)) {
8736 struct active_array
*a
;
8738 super
->updates_pending
++;
8739 for (a
= st
->arrays
; a
; a
= a
->next
)
8740 a
->check_degraded
= 1;
8745 pr_err("error: unsuported process update type:(type: %d)\n", type
);
8749 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
);
8751 static int imsm_prepare_update(struct supertype
*st
,
8752 struct metadata_update
*update
)
8755 * Allocate space to hold new disk entries, raid-device entries or a new
8756 * mpb if necessary. The manager synchronously waits for updates to
8757 * complete in the monitor, so new mpb buffers allocated here can be
8758 * integrated by the monitor thread without worrying about live pointers
8759 * in the manager thread.
8761 enum imsm_update_type type
;
8762 struct intel_super
*super
= st
->sb
;
8763 struct imsm_super
*mpb
= super
->anchor
;
8767 if (update
->len
< (int)sizeof(type
))
8770 type
= *(enum imsm_update_type
*) update
->buf
;
8773 case update_general_migration_checkpoint
:
8774 if (update
->len
< (int)sizeof(struct imsm_update_general_migration_checkpoint
))
8776 dprintf("called for update_general_migration_checkpoint\n");
8778 case update_takeover
: {
8779 struct imsm_update_takeover
*u
= (void *)update
->buf
;
8780 if (update
->len
< (int)sizeof(*u
))
8782 if (u
->direction
== R0_TO_R10
) {
8783 void **tail
= (void **)&update
->space_list
;
8784 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->subarray
);
8785 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8786 int num_members
= map
->num_members
;
8789 /* allocate memory for added disks */
8790 for (i
= 0; i
< num_members
; i
++) {
8791 size
= sizeof(struct dl
);
8792 space
= xmalloc(size
);
8797 /* allocate memory for new device */
8798 size
= sizeof_imsm_dev(super
->devlist
->dev
, 0) +
8799 (num_members
* sizeof(__u32
));
8800 space
= xmalloc(size
);
8804 len
= disks_to_mpb_size(num_members
* 2);
8809 case update_reshape_container_disks
: {
8810 /* Every raid device in the container is about to
8811 * gain some more devices, and we will enter a
8813 * So each 'imsm_map' will be bigger, and the imsm_vol
8814 * will now hold 2 of them.
8815 * Thus we need new 'struct imsm_dev' allocations sized
8816 * as sizeof_imsm_dev but with more devices in both maps.
8818 struct imsm_update_reshape
*u
= (void *)update
->buf
;
8819 struct intel_dev
*dl
;
8820 void **space_tail
= (void**)&update
->space_list
;
8822 if (update
->len
< (int)sizeof(*u
))
8825 dprintf("for update_reshape\n");
8827 for (dl
= super
->devlist
; dl
; dl
= dl
->next
) {
8828 int size
= sizeof_imsm_dev(dl
->dev
, 1);
8830 if (u
->new_raid_disks
> u
->old_raid_disks
)
8831 size
+= sizeof(__u32
)*2*
8832 (u
->new_raid_disks
- u
->old_raid_disks
);
8839 len
= disks_to_mpb_size(u
->new_raid_disks
);
8840 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
8843 case update_reshape_migration
: {
8844 /* for migration level 0->5 we need to add disks
8845 * so the same as for container operation we will copy
8846 * device to the bigger location.
8847 * in memory prepared device and new disk area are prepared
8848 * for usage in process update
8850 struct imsm_update_reshape_migration
*u
= (void *)update
->buf
;
8851 struct intel_dev
*id
;
8852 void **space_tail
= (void **)&update
->space_list
;
8855 int current_level
= -1;
8857 if (update
->len
< (int)sizeof(*u
))
8860 dprintf("for update_reshape\n");
8862 /* add space for bigger array in update
8864 for (id
= super
->devlist
; id
; id
= id
->next
) {
8865 if (id
->index
== (unsigned)u
->subdev
) {
8866 size
= sizeof_imsm_dev(id
->dev
, 1);
8867 if (u
->new_raid_disks
> u
->old_raid_disks
)
8868 size
+= sizeof(__u32
)*2*
8869 (u
->new_raid_disks
- u
->old_raid_disks
);
8877 if (update
->space_list
== NULL
)
8880 /* add space for disk in update
8882 size
= sizeof(struct dl
);
8888 /* add spare device to update
8890 for (id
= super
->devlist
; id
; id
= id
->next
)
8891 if (id
->index
== (unsigned)u
->subdev
) {
8892 struct imsm_dev
*dev
;
8893 struct imsm_map
*map
;
8895 dev
= get_imsm_dev(super
, u
->subdev
);
8896 map
= get_imsm_map(dev
, MAP_0
);
8897 current_level
= map
->raid_level
;
8900 if ((u
->new_level
== 5) && (u
->new_level
!= current_level
)) {
8901 struct mdinfo
*spares
;
8903 spares
= get_spares_for_grow(st
);
8911 makedev(dev
->disk
.major
,
8913 dl
= get_disk_super(super
,
8916 dl
->index
= u
->old_raid_disks
;
8922 len
= disks_to_mpb_size(u
->new_raid_disks
);
8923 dprintf("New anchor length is %llu\n", (unsigned long long)len
);
8926 case update_size_change
: {
8927 if (update
->len
< (int)sizeof(struct imsm_update_size_change
))
8931 case update_activate_spare
: {
8932 if (update
->len
< (int)sizeof(struct imsm_update_activate_spare
))
8936 case update_create_array
: {
8937 struct imsm_update_create_array
*u
= (void *) update
->buf
;
8938 struct intel_dev
*dv
;
8939 struct imsm_dev
*dev
= &u
->dev
;
8940 struct imsm_map
*map
= get_imsm_map(dev
, MAP_0
);
8942 struct disk_info
*inf
;
8946 if (update
->len
< (int)sizeof(*u
))
8949 inf
= get_disk_info(u
);
8950 len
= sizeof_imsm_dev(dev
, 1);
8951 /* allocate a new super->devlist entry */
8952 dv
= xmalloc(sizeof(*dv
));
8953 dv
->dev
= xmalloc(len
);
8956 /* count how many spares will be converted to members */
8957 for (i
= 0; i
< map
->num_members
; i
++) {
8958 dl
= serial_to_dl(inf
[i
].serial
, super
);
8960 /* hmm maybe it failed?, nothing we can do about
8965 if (count_memberships(dl
, super
) == 0)
8968 len
+= activate
* sizeof(struct imsm_disk
);
8971 case update_kill_array
: {
8972 if (update
->len
< (int)sizeof(struct imsm_update_kill_array
))
8976 case update_rename_array
: {
8977 if (update
->len
< (int)sizeof(struct imsm_update_rename_array
))
8981 case update_add_remove_disk
:
8982 /* no update->len needed */
8988 /* check if we need a larger metadata buffer */
8989 if (super
->next_buf
)
8990 buf_len
= super
->next_len
;
8992 buf_len
= super
->len
;
8994 if (__le32_to_cpu(mpb
->mpb_size
) + len
> buf_len
) {
8995 /* ok we need a larger buf than what is currently allocated
8996 * if this allocation fails process_update will notice that
8997 * ->next_len is set and ->next_buf is NULL
8999 buf_len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + len
, 512);
9000 if (super
->next_buf
)
9001 free(super
->next_buf
);
9003 super
->next_len
= buf_len
;
9004 if (posix_memalign(&super
->next_buf
, 512, buf_len
) == 0)
9005 memset(super
->next_buf
, 0, buf_len
);
9007 super
->next_buf
= NULL
;
9012 /* must be called while manager is quiesced */
9013 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, unsigned index
)
9015 struct imsm_super
*mpb
= super
->anchor
;
9017 struct imsm_dev
*dev
;
9018 struct imsm_map
*map
;
9019 int i
, j
, num_members
;
9022 dprintf("deleting device[%d] from imsm_super\n", index
);
9024 /* shift all indexes down one */
9025 for (iter
= super
->disks
; iter
; iter
= iter
->next
)
9026 if (iter
->index
> (int)index
)
9028 for (iter
= super
->missing
; iter
; iter
= iter
->next
)
9029 if (iter
->index
> (int)index
)
9032 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
9033 dev
= get_imsm_dev(super
, i
);
9034 map
= get_imsm_map(dev
, MAP_0
);
9035 num_members
= map
->num_members
;
9036 for (j
= 0; j
< num_members
; j
++) {
9037 /* update ord entries being careful not to propagate
9038 * ord-flags to the first map
9040 ord
= get_imsm_ord_tbl_ent(dev
, j
, MAP_X
);
9042 if (ord_to_idx(ord
) <= index
)
9045 map
= get_imsm_map(dev
, MAP_0
);
9046 set_imsm_ord_tbl_ent(map
, j
, ord_to_idx(ord
- 1));
9047 map
= get_imsm_map(dev
, MAP_1
);
9049 set_imsm_ord_tbl_ent(map
, j
, ord
- 1);
9054 super
->updates_pending
++;
9056 struct dl
*dl
= *dlp
;
9058 *dlp
= (*dlp
)->next
;
9059 __free_imsm_disk(dl
);
9062 #endif /* MDASSEMBLE */
9064 static void close_targets(int *targets
, int new_disks
)
9071 for (i
= 0; i
< new_disks
; i
++) {
9072 if (targets
[i
] >= 0) {
9079 static int imsm_get_allowed_degradation(int level
, int raid_disks
,
9080 struct intel_super
*super
,
9081 struct imsm_dev
*dev
)
9087 struct imsm_map
*map
;
9090 ret_val
= raid_disks
/2;
9091 /* check map if all disks pairs not failed
9094 map
= get_imsm_map(dev
, MAP_0
);
9095 for (i
= 0; i
< ret_val
; i
++) {
9096 int degradation
= 0;
9097 if (get_imsm_disk(super
, i
) == NULL
)
9099 if (get_imsm_disk(super
, i
+ 1) == NULL
)
9101 if (degradation
== 2)
9104 map
= get_imsm_map(dev
, MAP_1
);
9105 /* if there is no second map
9106 * result can be returned
9110 /* check degradation in second map
9112 for (i
= 0; i
< ret_val
; i
++) {
9113 int degradation
= 0;
9114 if (get_imsm_disk(super
, i
) == NULL
)
9116 if (get_imsm_disk(super
, i
+ 1) == NULL
)
9118 if (degradation
== 2)
9132 /*******************************************************************************
9133 * Function: open_backup_targets
9134 * Description: Function opens file descriptors for all devices given in
9137 * info : general array info
9138 * raid_disks : number of disks
9139 * raid_fds : table of device's file descriptors
9140 * super : intel super for raid10 degradation check
9141 * dev : intel device for raid10 degradation check
9145 ******************************************************************************/
9146 int open_backup_targets(struct mdinfo
*info
, int raid_disks
, int *raid_fds
,
9147 struct intel_super
*super
, struct imsm_dev
*dev
)
9153 for (i
= 0; i
< raid_disks
; i
++)
9156 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
9159 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
)) {
9160 dprintf("disk is faulty!!\n");
9164 if ((sd
->disk
.raid_disk
>= raid_disks
) ||
9165 (sd
->disk
.raid_disk
< 0))
9168 dn
= map_dev(sd
->disk
.major
,
9170 raid_fds
[sd
->disk
.raid_disk
] = dev_open(dn
, O_RDWR
);
9171 if (raid_fds
[sd
->disk
.raid_disk
] < 0) {
9172 pr_err("cannot open component\n");
9177 /* check if maximum array degradation level is not exceeded
9179 if ((raid_disks
- opened
) >
9180 imsm_get_allowed_degradation(info
->new_level
,
9183 pr_err("Not enough disks can be opened.\n");
9184 close_targets(raid_fds
, raid_disks
);
9190 /*******************************************************************************
9191 * Function: validate_container_imsm
9192 * Description: This routine validates container after assemble,
9193 * eg. if devices in container are under the same controller.
9196 * info : linked list with info about devices used in array
9200 ******************************************************************************/
9201 int validate_container_imsm(struct mdinfo
*info
)
9203 if (check_env("IMSM_NO_PLATFORM"))
9206 struct sys_dev
*idev
;
9207 struct sys_dev
*hba
= NULL
;
9208 struct sys_dev
*intel_devices
= find_intel_devices();
9209 char *dev_path
= devt_to_devpath(makedev(info
->disk
.major
,
9212 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
9213 if (dev_path
&& strstr(dev_path
, idev
->path
)) {
9222 pr_err("WARNING - Cannot detect HBA for device %s!\n",
9223 devid2kname(makedev(info
->disk
.major
, info
->disk
.minor
)));
9227 const struct imsm_orom
*orom
= get_orom_by_device_id(hba
->dev_id
);
9230 for (dev
= info
->next
; dev
; dev
= dev
->next
) {
9231 dev_path
= devt_to_devpath(makedev(dev
->disk
.major
, dev
->disk
.minor
));
9233 struct sys_dev
*hba2
= NULL
;
9234 for (idev
= intel_devices
; idev
; idev
= idev
->next
) {
9235 if (dev_path
&& strstr(dev_path
, idev
->path
)) {
9243 const struct imsm_orom
*orom2
= hba2
== NULL
? NULL
:
9244 get_orom_by_device_id(hba2
->dev_id
);
9246 if (hba2
&& hba
->type
!= hba2
->type
) {
9247 pr_err("WARNING - HBAs of devices do not match %s != %s\n",
9248 get_sys_dev_type(hba
->type
), get_sys_dev_type(hba2
->type
));
9252 if ((orom
!= orom2
) || ((hba
->type
== SYS_DEV_VMD
) && (hba
!= hba2
))) {
9253 pr_err("WARNING - IMSM container assembled with disks under different HBAs!\n"
9254 " This operation is not supported and can lead to data loss.\n");
9259 pr_err("WARNING - IMSM container assembled with disks under HBAs without IMSM platform support!\n"
9260 " This operation is not supported and can lead to data loss.\n");
9268 /*******************************************************************************
9269 * Function: init_migr_record_imsm
9270 * Description: Function inits imsm migration record
9272 * super : imsm internal array info
9273 * dev : device under migration
9274 * info : general array info to find the smallest device
9277 ******************************************************************************/
9278 void init_migr_record_imsm(struct supertype
*st
, struct imsm_dev
*dev
,
9279 struct mdinfo
*info
)
9281 struct intel_super
*super
= st
->sb
;
9282 struct migr_record
*migr_rec
= super
->migr_rec
;
9284 unsigned long long dsize
, dev_sectors
;
9285 long long unsigned min_dev_sectors
= -1LLU;
9289 struct imsm_map
*map_dest
= get_imsm_map(dev
, MAP_0
);
9290 struct imsm_map
*map_src
= get_imsm_map(dev
, MAP_1
);
9291 unsigned long long num_migr_units
;
9292 unsigned long long array_blocks
;
9294 memset(migr_rec
, 0, sizeof(struct migr_record
));
9295 migr_rec
->family_num
= __cpu_to_le32(super
->anchor
->family_num
);
9297 /* only ascending reshape supported now */
9298 migr_rec
->ascending_migr
= __cpu_to_le32(1);
9300 migr_rec
->dest_depth_per_unit
= GEN_MIGR_AREA_SIZE
/
9301 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
9302 migr_rec
->dest_depth_per_unit
*=
9303 max(map_dest
->blocks_per_strip
, map_src
->blocks_per_strip
);
9304 new_data_disks
= imsm_num_data_members(dev
, MAP_0
);
9305 migr_rec
->blocks_per_unit
=
9306 __cpu_to_le32(migr_rec
->dest_depth_per_unit
* new_data_disks
);
9307 migr_rec
->dest_depth_per_unit
=
9308 __cpu_to_le32(migr_rec
->dest_depth_per_unit
);
9309 array_blocks
= info
->component_size
* new_data_disks
;
9311 array_blocks
/ __le32_to_cpu(migr_rec
->blocks_per_unit
);
9313 if (array_blocks
% __le32_to_cpu(migr_rec
->blocks_per_unit
))
9315 migr_rec
->num_migr_units
= __cpu_to_le32(num_migr_units
);
9317 migr_rec
->post_migr_vol_cap
= dev
->size_low
;
9318 migr_rec
->post_migr_vol_cap_hi
= dev
->size_high
;
9320 /* Find the smallest dev */
9321 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
9322 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
9323 fd
= dev_open(nm
, O_RDONLY
);
9326 get_dev_size(fd
, NULL
, &dsize
);
9327 dev_sectors
= dsize
/ 512;
9328 if (dev_sectors
< min_dev_sectors
)
9329 min_dev_sectors
= dev_sectors
;
9332 migr_rec
->ckpt_area_pba
= __cpu_to_le32(min_dev_sectors
-
9333 RAID_DISK_RESERVED_BLOCKS_IMSM_HI
);
9335 write_imsm_migr_rec(st
);
9340 /*******************************************************************************
9341 * Function: save_backup_imsm
9342 * Description: Function saves critical data stripes to Migration Copy Area
9343 * and updates the current migration unit status.
9344 * Use restore_stripes() to form a destination stripe,
9345 * and to write it to the Copy Area.
9347 * st : supertype information
9348 * dev : imsm device that backup is saved for
9349 * info : general array info
9350 * buf : input buffer
9351 * length : length of data to backup (blocks_per_unit)
9355 ******************************************************************************/
9356 int save_backup_imsm(struct supertype
*st
,
9357 struct imsm_dev
*dev
,
9358 struct mdinfo
*info
,
9363 struct intel_super
*super
= st
->sb
;
9364 unsigned long long *target_offsets
= NULL
;
9365 int *targets
= NULL
;
9367 struct imsm_map
*map_dest
= get_imsm_map(dev
, MAP_0
);
9368 int new_disks
= map_dest
->num_members
;
9369 int dest_layout
= 0;
9371 unsigned long long start
;
9372 int data_disks
= imsm_num_data_members(dev
, MAP_0
);
9374 targets
= xmalloc(new_disks
* sizeof(int));
9376 for (i
= 0; i
< new_disks
; i
++)
9379 target_offsets
= xcalloc(new_disks
, sizeof(unsigned long long));
9381 start
= info
->reshape_progress
* 512;
9382 for (i
= 0; i
< new_disks
; i
++) {
9383 target_offsets
[i
] = (unsigned long long)
9384 __le32_to_cpu(super
->migr_rec
->ckpt_area_pba
) * 512;
9385 /* move back copy area adderss, it will be moved forward
9386 * in restore_stripes() using start input variable
9388 target_offsets
[i
] -= start
/data_disks
;
9391 if (open_backup_targets(info
, new_disks
, targets
,
9395 dest_layout
= imsm_level_to_layout(map_dest
->raid_level
);
9396 dest_chunk
= __le16_to_cpu(map_dest
->blocks_per_strip
) * 512;
9398 if (restore_stripes(targets
, /* list of dest devices */
9399 target_offsets
, /* migration record offsets */
9402 map_dest
->raid_level
,
9404 -1, /* source backup file descriptor */
9405 0, /* input buf offset
9406 * always 0 buf is already offseted */
9410 pr_err("Error restoring stripes\n");
9418 close_targets(targets
, new_disks
);
9421 free(target_offsets
);
9426 /*******************************************************************************
9427 * Function: save_checkpoint_imsm
9428 * Description: Function called for current unit status update
9429 * in the migration record. It writes it to disk.
9431 * super : imsm internal array info
9432 * info : general array info
9436 * 2: failure, means no valid migration record
9437 * / no general migration in progress /
9438 ******************************************************************************/
9439 int save_checkpoint_imsm(struct supertype
*st
, struct mdinfo
*info
, int state
)
9441 struct intel_super
*super
= st
->sb
;
9442 unsigned long long blocks_per_unit
;
9443 unsigned long long curr_migr_unit
;
9445 if (load_imsm_migr_rec(super
, info
) != 0) {
9446 dprintf("imsm: ERROR: Cannot read migration record for checkpoint save.\n");
9450 blocks_per_unit
= __le32_to_cpu(super
->migr_rec
->blocks_per_unit
);
9451 if (blocks_per_unit
== 0) {
9452 dprintf("imsm: no migration in progress.\n");
9455 curr_migr_unit
= info
->reshape_progress
/ blocks_per_unit
;
9456 /* check if array is alligned to copy area
9457 * if it is not alligned, add one to current migration unit value
9458 * this can happend on array reshape finish only
9460 if (info
->reshape_progress
% blocks_per_unit
)
9463 super
->migr_rec
->curr_migr_unit
=
9464 __cpu_to_le32(curr_migr_unit
);
9465 super
->migr_rec
->rec_status
= __cpu_to_le32(state
);
9466 super
->migr_rec
->dest_1st_member_lba
=
9467 __cpu_to_le32(curr_migr_unit
*
9468 __le32_to_cpu(super
->migr_rec
->dest_depth_per_unit
));
9469 if (write_imsm_migr_rec(st
) < 0) {
9470 dprintf("imsm: Cannot write migration record outside backup area\n");
9477 /*******************************************************************************
9478 * Function: recover_backup_imsm
9479 * Description: Function recovers critical data from the Migration Copy Area
9480 * while assembling an array.
9482 * super : imsm internal array info
9483 * info : general array info
9485 * 0 : success (or there is no data to recover)
9487 ******************************************************************************/
9488 int recover_backup_imsm(struct supertype
*st
, struct mdinfo
*info
)
9490 struct intel_super
*super
= st
->sb
;
9491 struct migr_record
*migr_rec
= super
->migr_rec
;
9492 struct imsm_map
*map_dest
= NULL
;
9493 struct intel_dev
*id
= NULL
;
9494 unsigned long long read_offset
;
9495 unsigned long long write_offset
;
9497 int *targets
= NULL
;
9498 int new_disks
, i
, err
;
9501 unsigned long curr_migr_unit
= __le32_to_cpu(migr_rec
->curr_migr_unit
);
9502 unsigned long num_migr_units
= __le32_to_cpu(migr_rec
->num_migr_units
);
9504 int skipped_disks
= 0;
9506 err
= sysfs_get_str(info
, NULL
, "array_state", (char *)buffer
, 20);
9510 /* recover data only during assemblation */
9511 if (strncmp(buffer
, "inactive", 8) != 0)
9513 /* no data to recover */
9514 if (__le32_to_cpu(migr_rec
->rec_status
) == UNIT_SRC_NORMAL
)
9516 if (curr_migr_unit
>= num_migr_units
)
9519 /* find device during reshape */
9520 for (id
= super
->devlist
; id
; id
= id
->next
)
9521 if (is_gen_migration(id
->dev
))
9526 map_dest
= get_imsm_map(id
->dev
, MAP_0
);
9527 new_disks
= map_dest
->num_members
;
9529 read_offset
= (unsigned long long)
9530 __le32_to_cpu(migr_rec
->ckpt_area_pba
) * 512;
9532 write_offset
= ((unsigned long long)
9533 __le32_to_cpu(migr_rec
->dest_1st_member_lba
) +
9534 pba_of_lba0(map_dest
)) * 512;
9536 unit_len
= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
9537 if (posix_memalign((void **)&buf
, 512, unit_len
) != 0)
9539 targets
= xcalloc(new_disks
, sizeof(int));
9541 if (open_backup_targets(info
, new_disks
, targets
, super
, id
->dev
)) {
9542 pr_err("Cannot open some devices belonging to array.\n");
9546 for (i
= 0; i
< new_disks
; i
++) {
9547 if (targets
[i
] < 0) {
9551 if (lseek64(targets
[i
], read_offset
, SEEK_SET
) < 0) {
9552 pr_err("Cannot seek to block: %s\n",
9557 if ((unsigned)read(targets
[i
], buf
, unit_len
) != unit_len
) {
9558 pr_err("Cannot read copy area block: %s\n",
9563 if (lseek64(targets
[i
], write_offset
, SEEK_SET
) < 0) {
9564 pr_err("Cannot seek to block: %s\n",
9569 if ((unsigned)write(targets
[i
], buf
, unit_len
) != unit_len
) {
9570 pr_err("Cannot restore block: %s\n",
9577 if (skipped_disks
> imsm_get_allowed_degradation(info
->new_level
,
9581 pr_err("Cannot restore data from backup. Too many failed disks\n");
9585 if (save_checkpoint_imsm(st
, info
, UNIT_SRC_NORMAL
)) {
9586 /* ignore error == 2, this can mean end of reshape here
9588 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL) during restart\n");
9594 for (i
= 0; i
< new_disks
; i
++)
9603 static char disk_by_path
[] = "/dev/disk/by-path/";
9605 static const char *imsm_get_disk_controller_domain(const char *path
)
9607 char disk_path
[PATH_MAX
];
9611 strcpy(disk_path
, disk_by_path
);
9612 strncat(disk_path
, path
, PATH_MAX
- strlen(disk_path
) - 1);
9613 if (stat(disk_path
, &st
) == 0) {
9614 struct sys_dev
* hba
;
9617 path
= devt_to_devpath(st
.st_rdev
);
9620 hba
= find_disk_attached_hba(-1, path
);
9621 if (hba
&& hba
->type
== SYS_DEV_SAS
)
9623 else if (hba
&& hba
->type
== SYS_DEV_SATA
)
9627 dprintf("path: %s hba: %s attached: %s\n",
9628 path
, (hba
) ? hba
->path
: "NULL", drv
);
9634 static char *imsm_find_array_devnm_by_subdev(int subdev
, char *container
)
9636 static char devnm
[32];
9637 char subdev_name
[20];
9638 struct mdstat_ent
*mdstat
;
9640 sprintf(subdev_name
, "%d", subdev
);
9641 mdstat
= mdstat_by_subdev(subdev_name
, container
);
9645 strcpy(devnm
, mdstat
->devnm
);
9646 free_mdstat(mdstat
);
9650 static int imsm_reshape_is_allowed_on_container(struct supertype
*st
,
9651 struct geo_params
*geo
,
9652 int *old_raid_disks
,
9655 /* currently we only support increasing the number of devices
9656 * for a container. This increases the number of device for each
9657 * member array. They must all be RAID0 or RAID5.
9660 struct mdinfo
*info
, *member
;
9661 int devices_that_can_grow
= 0;
9663 dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): st->devnm = (%s)\n", st
->devnm
);
9665 if (geo
->size
> 0 ||
9666 geo
->level
!= UnSet
||
9667 geo
->layout
!= UnSet
||
9668 geo
->chunksize
!= 0 ||
9669 geo
->raid_disks
== UnSet
) {
9670 dprintf("imsm: Container operation is allowed for raid disks number change only.\n");
9674 if (direction
== ROLLBACK_METADATA_CHANGES
) {
9675 dprintf("imsm: Metadata changes rollback is not supported for container operation.\n");
9679 info
= container_content_imsm(st
, NULL
);
9680 for (member
= info
; member
; member
= member
->next
) {
9683 dprintf("imsm: checking device_num: %i\n",
9684 member
->container_member
);
9686 if (geo
->raid_disks
<= member
->array
.raid_disks
) {
9687 /* we work on container for Online Capacity Expansion
9688 * only so raid_disks has to grow
9690 dprintf("imsm: for container operation raid disks increase is required\n");
9694 if ((info
->array
.level
!= 0) &&
9695 (info
->array
.level
!= 5)) {
9696 /* we cannot use this container with other raid level
9698 dprintf("imsm: for container operation wrong raid level (%i) detected\n",
9702 /* check for platform support
9703 * for this raid level configuration
9705 struct intel_super
*super
= st
->sb
;
9706 if (!is_raid_level_supported(super
->orom
,
9707 member
->array
.level
,
9709 dprintf("platform does not support raid%d with %d disk%s\n",
9712 geo
->raid_disks
> 1 ? "s" : "");
9715 /* check if component size is aligned to chunk size
9717 if (info
->component_size
%
9718 (info
->array
.chunk_size
/512)) {
9719 dprintf("Component size is not aligned to chunk size\n");
9724 if (*old_raid_disks
&&
9725 info
->array
.raid_disks
!= *old_raid_disks
)
9727 *old_raid_disks
= info
->array
.raid_disks
;
9729 /* All raid5 and raid0 volumes in container
9730 * have to be ready for Online Capacity Expansion
9731 * so they need to be assembled. We have already
9732 * checked that no recovery etc is happening.
9734 result
= imsm_find_array_devnm_by_subdev(member
->container_member
,
9735 st
->container_devnm
);
9736 if (result
== NULL
) {
9737 dprintf("imsm: cannot find array\n");
9740 devices_that_can_grow
++;
9743 if (!member
&& devices_that_can_grow
)
9747 dprintf("Container operation allowed\n");
9749 dprintf("Error: %i\n", ret_val
);
9754 /* Function: get_spares_for_grow
9755 * Description: Allocates memory and creates list of spare devices
9756 * avaliable in container. Checks if spare drive size is acceptable.
9757 * Parameters: Pointer to the supertype structure
9758 * Returns: Pointer to the list of spare devices (mdinfo structure) on success,
9761 static struct mdinfo
*get_spares_for_grow(struct supertype
*st
)
9763 unsigned long long min_size
= min_acceptable_spare_size_imsm(st
);
9764 return container_choose_spares(st
, min_size
, NULL
, NULL
, NULL
, 0);
9767 /******************************************************************************
9768 * function: imsm_create_metadata_update_for_reshape
9769 * Function creates update for whole IMSM container.
9771 ******************************************************************************/
9772 static int imsm_create_metadata_update_for_reshape(
9773 struct supertype
*st
,
9774 struct geo_params
*geo
,
9776 struct imsm_update_reshape
**updatep
)
9778 struct intel_super
*super
= st
->sb
;
9779 struct imsm_super
*mpb
= super
->anchor
;
9780 int update_memory_size
= 0;
9781 struct imsm_update_reshape
*u
= NULL
;
9782 struct mdinfo
*spares
= NULL
;
9784 int delta_disks
= 0;
9787 dprintf("(enter) raid_disks = %i\n", geo
->raid_disks
);
9789 delta_disks
= geo
->raid_disks
- old_raid_disks
;
9791 /* size of all update data without anchor */
9792 update_memory_size
= sizeof(struct imsm_update_reshape
);
9794 /* now add space for spare disks that we need to add. */
9795 update_memory_size
+= sizeof(u
->new_disks
[0]) * (delta_disks
- 1);
9797 u
= xcalloc(1, update_memory_size
);
9798 u
->type
= update_reshape_container_disks
;
9799 u
->old_raid_disks
= old_raid_disks
;
9800 u
->new_raid_disks
= geo
->raid_disks
;
9802 /* now get spare disks list
9804 spares
= get_spares_for_grow(st
);
9807 || delta_disks
> spares
->array
.spare_disks
) {
9808 pr_err("imsm: ERROR: Cannot get spare devices for %s.\n", geo
->dev_name
);
9813 /* we have got spares
9814 * update disk list in imsm_disk list table in anchor
9816 dprintf("imsm: %i spares are available.\n\n",
9817 spares
->array
.spare_disks
);
9820 for (i
= 0; i
< delta_disks
; i
++) {
9825 u
->new_disks
[i
] = makedev(dev
->disk
.major
,
9827 dl
= get_disk_super(super
, dev
->disk
.major
, dev
->disk
.minor
);
9828 dl
->index
= mpb
->num_disks
;
9838 dprintf("imsm: reshape update preparation :");
9839 if (i
== delta_disks
) {
9840 dprintf_cont(" OK\n");
9842 return update_memory_size
;
9845 dprintf_cont(" Error\n");
9850 /******************************************************************************
9851 * function: imsm_create_metadata_update_for_size_change()
9852 * Creates update for IMSM array for array size change.
9854 ******************************************************************************/
9855 static int imsm_create_metadata_update_for_size_change(
9856 struct supertype
*st
,
9857 struct geo_params
*geo
,
9858 struct imsm_update_size_change
**updatep
)
9860 struct intel_super
*super
= st
->sb
;
9861 int update_memory_size
= 0;
9862 struct imsm_update_size_change
*u
= NULL
;
9864 dprintf("(enter) New size = %llu\n", geo
->size
);
9866 /* size of all update data without anchor */
9867 update_memory_size
= sizeof(struct imsm_update_size_change
);
9869 u
= xcalloc(1, update_memory_size
);
9870 u
->type
= update_size_change
;
9871 u
->subdev
= super
->current_vol
;
9872 u
->new_size
= geo
->size
;
9874 dprintf("imsm: reshape update preparation : OK\n");
9877 return update_memory_size
;
9880 /******************************************************************************
9881 * function: imsm_create_metadata_update_for_migration()
9882 * Creates update for IMSM array.
9884 ******************************************************************************/
9885 static int imsm_create_metadata_update_for_migration(
9886 struct supertype
*st
,
9887 struct geo_params
*geo
,
9888 struct imsm_update_reshape_migration
**updatep
)
9890 struct intel_super
*super
= st
->sb
;
9891 int update_memory_size
= 0;
9892 struct imsm_update_reshape_migration
*u
= NULL
;
9893 struct imsm_dev
*dev
;
9894 int previous_level
= -1;
9896 dprintf("(enter) New Level = %i\n", geo
->level
);
9898 /* size of all update data without anchor */
9899 update_memory_size
= sizeof(struct imsm_update_reshape_migration
);
9901 u
= xcalloc(1, update_memory_size
);
9902 u
->type
= update_reshape_migration
;
9903 u
->subdev
= super
->current_vol
;
9904 u
->new_level
= geo
->level
;
9905 u
->new_layout
= geo
->layout
;
9906 u
->new_raid_disks
= u
->old_raid_disks
= geo
->raid_disks
;
9907 u
->new_disks
[0] = -1;
9908 u
->new_chunksize
= -1;
9910 dev
= get_imsm_dev(super
, u
->subdev
);
9912 struct imsm_map
*map
;
9914 map
= get_imsm_map(dev
, MAP_0
);
9916 int current_chunk_size
=
9917 __le16_to_cpu(map
->blocks_per_strip
) / 2;
9919 if (geo
->chunksize
!= current_chunk_size
) {
9920 u
->new_chunksize
= geo
->chunksize
/ 1024;
9921 dprintf("imsm: chunk size change from %i to %i\n",
9922 current_chunk_size
, u
->new_chunksize
);
9924 previous_level
= map
->raid_level
;
9927 if ((geo
->level
== 5) && (previous_level
== 0)) {
9928 struct mdinfo
*spares
= NULL
;
9930 u
->new_raid_disks
++;
9931 spares
= get_spares_for_grow(st
);
9932 if ((spares
== NULL
) || (spares
->array
.spare_disks
< 1)) {
9935 update_memory_size
= 0;
9936 dprintf("error: cannot get spare device for requested migration");
9941 dprintf("imsm: reshape update preparation : OK\n");
9944 return update_memory_size
;
9947 static void imsm_update_metadata_locally(struct supertype
*st
,
9950 struct metadata_update mu
;
9955 mu
.space_list
= NULL
;
9957 if (imsm_prepare_update(st
, &mu
))
9958 imsm_process_update(st
, &mu
);
9960 while (mu
.space_list
) {
9961 void **space
= mu
.space_list
;
9962 mu
.space_list
= *space
;
9967 /***************************************************************************
9968 * Function: imsm_analyze_change
9969 * Description: Function analyze change for single volume
9970 * and validate if transition is supported
9971 * Parameters: Geometry parameters, supertype structure,
9972 * metadata change direction (apply/rollback)
9973 * Returns: Operation type code on success, -1 if fail
9974 ****************************************************************************/
9975 enum imsm_reshape_type
imsm_analyze_change(struct supertype
*st
,
9976 struct geo_params
*geo
,
9983 /* number of added/removed disks in operation result */
9984 int devNumChange
= 0;
9985 /* imsm compatible layout value for array geometry verification */
9986 int imsm_layout
= -1;
9988 struct imsm_dev
*dev
;
9989 struct intel_super
*super
;
9990 unsigned long long current_size
;
9991 unsigned long long free_size
;
9992 unsigned long long max_size
;
9995 getinfo_super_imsm_volume(st
, &info
, NULL
);
9996 if ((geo
->level
!= info
.array
.level
) &&
9997 (geo
->level
>= 0) &&
9998 (geo
->level
!= UnSet
)) {
9999 switch (info
.array
.level
) {
10001 if (geo
->level
== 5) {
10002 change
= CH_MIGRATION
;
10003 if (geo
->layout
!= ALGORITHM_LEFT_ASYMMETRIC
) {
10004 pr_err("Error. Requested Layout not supported (left-asymmetric layout is supported only)!\n");
10006 goto analyse_change_exit
;
10008 imsm_layout
= geo
->layout
;
10010 devNumChange
= 1; /* parity disk added */
10011 } else if (geo
->level
== 10) {
10012 change
= CH_TAKEOVER
;
10014 devNumChange
= 2; /* two mirrors added */
10015 imsm_layout
= 0x102; /* imsm supported layout */
10020 if (geo
->level
== 0) {
10021 change
= CH_TAKEOVER
;
10023 devNumChange
= -(geo
->raid_disks
/2);
10024 imsm_layout
= 0; /* imsm raid0 layout */
10028 if (change
== -1) {
10029 pr_err("Error. Level Migration from %d to %d not supported!\n",
10030 info
.array
.level
, geo
->level
);
10031 goto analyse_change_exit
;
10034 geo
->level
= info
.array
.level
;
10036 if ((geo
->layout
!= info
.array
.layout
)
10037 && ((geo
->layout
!= UnSet
) && (geo
->layout
!= -1))) {
10038 change
= CH_MIGRATION
;
10039 if ((info
.array
.layout
== 0)
10040 && (info
.array
.level
== 5)
10041 && (geo
->layout
== 5)) {
10042 /* reshape 5 -> 4 */
10043 } else if ((info
.array
.layout
== 5)
10044 && (info
.array
.level
== 5)
10045 && (geo
->layout
== 0)) {
10046 /* reshape 4 -> 5 */
10050 pr_err("Error. Layout Migration from %d to %d not supported!\n",
10051 info
.array
.layout
, geo
->layout
);
10053 goto analyse_change_exit
;
10056 geo
->layout
= info
.array
.layout
;
10057 if (imsm_layout
== -1)
10058 imsm_layout
= info
.array
.layout
;
10061 if ((geo
->chunksize
> 0) && (geo
->chunksize
!= UnSet
)
10062 && (geo
->chunksize
!= info
.array
.chunk_size
))
10063 change
= CH_MIGRATION
;
10065 geo
->chunksize
= info
.array
.chunk_size
;
10067 chunk
= geo
->chunksize
/ 1024;
10070 dev
= get_imsm_dev(super
, super
->current_vol
);
10071 data_disks
= imsm_num_data_members(dev
, MAP_0
);
10072 /* compute current size per disk member
10074 current_size
= info
.custom_array_size
/ data_disks
;
10076 if ((geo
->size
> 0) && (geo
->size
!= MAX_SIZE
)) {
10077 /* align component size
10079 geo
->size
= imsm_component_size_aligment_check(
10080 get_imsm_raid_level(dev
->vol
.map
),
10083 if (geo
->size
== 0) {
10084 pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is 0).\n",
10086 goto analyse_change_exit
;
10090 if ((current_size
!= geo
->size
) && (geo
->size
> 0)) {
10091 if (change
!= -1) {
10092 pr_err("Error. Size change should be the only one at a time.\n");
10094 goto analyse_change_exit
;
10096 if ((super
->current_vol
+ 1) != super
->anchor
->num_raid_devs
) {
10097 pr_err("Error. The last volume in container can be expanded only (%i/%s).\n",
10098 super
->current_vol
, st
->devnm
);
10099 goto analyse_change_exit
;
10101 /* check the maximum available size
10103 rv
= imsm_get_free_size(st
, dev
->vol
.map
->num_members
,
10104 0, chunk
, &free_size
);
10106 /* Cannot find maximum available space
10110 max_size
= free_size
+ current_size
;
10111 /* align component size
10113 max_size
= imsm_component_size_aligment_check(
10114 get_imsm_raid_level(dev
->vol
.map
),
10118 if (geo
->size
== MAX_SIZE
) {
10119 /* requested size change to the maximum available size
10121 if (max_size
== 0) {
10122 pr_err("Error. Cannot find maximum available space.\n");
10124 goto analyse_change_exit
;
10126 geo
->size
= max_size
;
10129 if ((direction
== ROLLBACK_METADATA_CHANGES
)) {
10130 /* accept size for rollback only
10133 /* round size due to metadata compatibility
10135 geo
->size
= (geo
->size
>> SECT_PER_MB_SHIFT
)
10136 << SECT_PER_MB_SHIFT
;
10137 dprintf("Prepare update for size change to %llu\n",
10139 if (current_size
>= geo
->size
) {
10140 pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is %llu).\n",
10141 current_size
, geo
->size
);
10142 goto analyse_change_exit
;
10144 if (max_size
&& geo
->size
> max_size
) {
10145 pr_err("Error. Requested size is larger than maximum available size (maximum available size is %llu, requested size /rounded/ is %llu).\n",
10146 max_size
, geo
->size
);
10147 goto analyse_change_exit
;
10150 geo
->size
*= data_disks
;
10151 geo
->raid_disks
= dev
->vol
.map
->num_members
;
10152 change
= CH_ARRAY_SIZE
;
10154 if (!validate_geometry_imsm(st
,
10157 geo
->raid_disks
+ devNumChange
,
10159 geo
->size
, INVALID_SECTORS
,
10164 struct intel_super
*super
= st
->sb
;
10165 struct imsm_super
*mpb
= super
->anchor
;
10167 if (mpb
->num_raid_devs
> 1) {
10168 pr_err("Error. Cannot perform operation on %s- for this operation it MUST be single array in container\n",
10174 analyse_change_exit
:
10175 if ((direction
== ROLLBACK_METADATA_CHANGES
) &&
10176 ((change
== CH_MIGRATION
) || (change
== CH_TAKEOVER
))) {
10177 dprintf("imsm: Metadata changes rollback is not supported for migration and takeover operations.\n");
10183 int imsm_takeover(struct supertype
*st
, struct geo_params
*geo
)
10185 struct intel_super
*super
= st
->sb
;
10186 struct imsm_update_takeover
*u
;
10188 u
= xmalloc(sizeof(struct imsm_update_takeover
));
10190 u
->type
= update_takeover
;
10191 u
->subarray
= super
->current_vol
;
10193 /* 10->0 transition */
10194 if (geo
->level
== 0)
10195 u
->direction
= R10_TO_R0
;
10197 /* 0->10 transition */
10198 if (geo
->level
== 10)
10199 u
->direction
= R0_TO_R10
;
10201 /* update metadata locally */
10202 imsm_update_metadata_locally(st
, u
,
10203 sizeof(struct imsm_update_takeover
));
10204 /* and possibly remotely */
10205 if (st
->update_tail
)
10206 append_metadata_update(st
, u
,
10207 sizeof(struct imsm_update_takeover
));
10214 static int imsm_reshape_super(struct supertype
*st
, unsigned long long size
,
10216 int layout
, int chunksize
, int raid_disks
,
10217 int delta_disks
, char *backup
, char *dev
,
10218 int direction
, int verbose
)
10221 struct geo_params geo
;
10223 dprintf("(enter)\n");
10225 memset(&geo
, 0, sizeof(struct geo_params
));
10227 geo
.dev_name
= dev
;
10228 strcpy(geo
.devnm
, st
->devnm
);
10231 geo
.layout
= layout
;
10232 geo
.chunksize
= chunksize
;
10233 geo
.raid_disks
= raid_disks
;
10234 if (delta_disks
!= UnSet
)
10235 geo
.raid_disks
+= delta_disks
;
10237 dprintf("for level : %i\n", geo
.level
);
10238 dprintf("for raid_disks : %i\n", geo
.raid_disks
);
10240 if (experimental() == 0)
10243 if (strcmp(st
->container_devnm
, st
->devnm
) == 0) {
10244 /* On container level we can only increase number of devices. */
10245 dprintf("imsm: info: Container operation\n");
10246 int old_raid_disks
= 0;
10248 if (imsm_reshape_is_allowed_on_container(
10249 st
, &geo
, &old_raid_disks
, direction
)) {
10250 struct imsm_update_reshape
*u
= NULL
;
10253 len
= imsm_create_metadata_update_for_reshape(
10254 st
, &geo
, old_raid_disks
, &u
);
10257 dprintf("imsm: Cannot prepare update\n");
10258 goto exit_imsm_reshape_super
;
10262 /* update metadata locally */
10263 imsm_update_metadata_locally(st
, u
, len
);
10264 /* and possibly remotely */
10265 if (st
->update_tail
)
10266 append_metadata_update(st
, u
, len
);
10271 pr_err("(imsm) Operation is not allowed on this container\n");
10274 /* On volume level we support following operations
10275 * - takeover: raid10 -> raid0; raid0 -> raid10
10276 * - chunk size migration
10277 * - migration: raid5 -> raid0; raid0 -> raid5
10279 struct intel_super
*super
= st
->sb
;
10280 struct intel_dev
*dev
= super
->devlist
;
10282 dprintf("imsm: info: Volume operation\n");
10283 /* find requested device */
10286 imsm_find_array_devnm_by_subdev(
10287 dev
->index
, st
->container_devnm
);
10288 if (devnm
&& strcmp(devnm
, geo
.devnm
) == 0)
10293 pr_err("Cannot find %s (%s) subarray\n",
10294 geo
.dev_name
, geo
.devnm
);
10295 goto exit_imsm_reshape_super
;
10297 super
->current_vol
= dev
->index
;
10298 change
= imsm_analyze_change(st
, &geo
, direction
);
10301 ret_val
= imsm_takeover(st
, &geo
);
10303 case CH_MIGRATION
: {
10304 struct imsm_update_reshape_migration
*u
= NULL
;
10306 imsm_create_metadata_update_for_migration(
10309 dprintf("imsm: Cannot prepare update\n");
10313 /* update metadata locally */
10314 imsm_update_metadata_locally(st
, u
, len
);
10315 /* and possibly remotely */
10316 if (st
->update_tail
)
10317 append_metadata_update(st
, u
, len
);
10322 case CH_ARRAY_SIZE
: {
10323 struct imsm_update_size_change
*u
= NULL
;
10325 imsm_create_metadata_update_for_size_change(
10328 dprintf("imsm: Cannot prepare update\n");
10332 /* update metadata locally */
10333 imsm_update_metadata_locally(st
, u
, len
);
10334 /* and possibly remotely */
10335 if (st
->update_tail
)
10336 append_metadata_update(st
, u
, len
);
10346 exit_imsm_reshape_super
:
10347 dprintf("imsm: reshape_super Exit code = %i\n", ret_val
);
10351 /*******************************************************************************
10352 * Function: wait_for_reshape_imsm
10353 * Description: Function writes new sync_max value and waits until
10354 * reshape process reach new position
10356 * sra : general array info
10357 * ndata : number of disks in new array's layout
10360 * 1 : there is no reshape in progress,
10362 ******************************************************************************/
10363 int wait_for_reshape_imsm(struct mdinfo
*sra
, int ndata
)
10365 int fd
= sysfs_get_fd(sra
, NULL
, "sync_completed");
10366 unsigned long long completed
;
10367 /* to_complete : new sync_max position */
10368 unsigned long long to_complete
= sra
->reshape_progress
;
10369 unsigned long long position_to_set
= to_complete
/ ndata
;
10372 dprintf("cannot open reshape_position\n");
10376 if (sysfs_fd_get_ll(fd
, &completed
) < 0) {
10377 dprintf("cannot read reshape_position (no reshape in progres)\n");
10382 if (completed
> position_to_set
) {
10383 dprintf("wrong next position to set %llu (%llu)\n",
10384 to_complete
, position_to_set
);
10388 dprintf("Position set: %llu\n", position_to_set
);
10389 if (sysfs_set_num(sra
, NULL
, "sync_max",
10390 position_to_set
) != 0) {
10391 dprintf("cannot set reshape position to %llu\n",
10399 int timeout
= 3000;
10400 sysfs_wait(fd
, &timeout
);
10401 if (sysfs_get_str(sra
, NULL
, "sync_action",
10403 strncmp(action
, "reshape", 7) != 0) {
10407 if (sysfs_fd_get_ll(fd
, &completed
) < 0) {
10408 dprintf("cannot read reshape_position (in loop)\n");
10412 } while (completed
< position_to_set
);
10418 /*******************************************************************************
10419 * Function: check_degradation_change
10420 * Description: Check that array hasn't become failed.
10422 * info : for sysfs access
10423 * sources : source disks descriptors
10424 * degraded: previous degradation level
10426 * degradation level
10427 ******************************************************************************/
10428 int check_degradation_change(struct mdinfo
*info
,
10432 unsigned long long new_degraded
;
10435 rv
= sysfs_get_ll(info
, NULL
, "degraded", &new_degraded
);
10436 if ((rv
== -1) || (new_degraded
!= (unsigned long long)degraded
)) {
10437 /* check each device to ensure it is still working */
10440 for (sd
= info
->devs
; sd
; sd
= sd
->next
) {
10441 if (sd
->disk
.state
& (1<<MD_DISK_FAULTY
))
10443 if (sd
->disk
.state
& (1<<MD_DISK_SYNC
)) {
10445 if (sysfs_get_str(info
,
10446 sd
, "state", sbuf
, 20) < 0 ||
10447 strstr(sbuf
, "faulty") ||
10448 strstr(sbuf
, "in_sync") == NULL
) {
10449 /* this device is dead */
10450 sd
->disk
.state
= (1<<MD_DISK_FAULTY
);
10451 if (sd
->disk
.raid_disk
>= 0 &&
10452 sources
[sd
->disk
.raid_disk
] >= 0) {
10454 sd
->disk
.raid_disk
]);
10455 sources
[sd
->disk
.raid_disk
] =
10464 return new_degraded
;
10467 /*******************************************************************************
10468 * Function: imsm_manage_reshape
10469 * Description: Function finds array under reshape and it manages reshape
10470 * process. It creates stripes backups (if required) and sets
10473 * afd : Backup handle (nattive) - not used
10474 * sra : general array info
10475 * reshape : reshape parameters - not used
10476 * st : supertype structure
10477 * blocks : size of critical section [blocks]
10478 * fds : table of source device descriptor
10479 * offsets : start of array (offest per devices)
10481 * destfd : table of destination device descriptor
10482 * destoffsets : table of destination offsets (per device)
10484 * 1 : success, reshape is done
10486 ******************************************************************************/
10487 static int imsm_manage_reshape(
10488 int afd
, struct mdinfo
*sra
, struct reshape
*reshape
,
10489 struct supertype
*st
, unsigned long backup_blocks
,
10490 int *fds
, unsigned long long *offsets
,
10491 int dests
, int *destfd
, unsigned long long *destoffsets
)
10494 struct intel_super
*super
= st
->sb
;
10495 struct intel_dev
*dv
= NULL
;
10496 struct imsm_dev
*dev
= NULL
;
10497 struct imsm_map
*map_src
;
10498 int migr_vol_qan
= 0;
10499 int ndata
, odata
; /* [bytes] */
10500 int chunk
; /* [bytes] */
10501 struct migr_record
*migr_rec
;
10503 unsigned int buf_size
; /* [bytes] */
10504 unsigned long long max_position
; /* array size [bytes] */
10505 unsigned long long next_step
; /* [blocks]/[bytes] */
10506 unsigned long long old_data_stripe_length
;
10507 unsigned long long start_src
; /* [bytes] */
10508 unsigned long long start
; /* [bytes] */
10509 unsigned long long start_buf_shift
; /* [bytes] */
10511 int source_layout
= 0;
10513 if (!fds
|| !offsets
|| !sra
)
10516 /* Find volume during the reshape */
10517 for (dv
= super
->devlist
; dv
; dv
= dv
->next
) {
10518 if (dv
->dev
->vol
.migr_type
== MIGR_GEN_MIGR
10519 && dv
->dev
->vol
.migr_state
== 1) {
10524 /* Only one volume can migrate at the same time */
10525 if (migr_vol_qan
!= 1) {
10526 pr_err(": %s", migr_vol_qan
?
10527 "Number of migrating volumes greater than 1\n" :
10528 "There is no volume during migrationg\n");
10532 map_src
= get_imsm_map(dev
, MAP_1
);
10533 if (map_src
== NULL
)
10536 ndata
= imsm_num_data_members(dev
, MAP_0
);
10537 odata
= imsm_num_data_members(dev
, MAP_1
);
10539 chunk
= __le16_to_cpu(map_src
->blocks_per_strip
) * 512;
10540 old_data_stripe_length
= odata
* chunk
;
10542 migr_rec
= super
->migr_rec
;
10544 /* initialize migration record for start condition */
10545 if (sra
->reshape_progress
== 0)
10546 init_migr_record_imsm(st
, dev
, sra
);
10548 if (__le32_to_cpu(migr_rec
->rec_status
) != UNIT_SRC_NORMAL
) {
10549 dprintf("imsm: cannot restart migration when data are present in copy area.\n");
10552 /* Save checkpoint to update migration record for current
10553 * reshape position (in md). It can be farther than current
10554 * reshape position in metadata.
10556 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
10557 /* ignore error == 2, this can mean end of reshape here
10559 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL, initial save)\n");
10564 /* size for data */
10565 buf_size
= __le32_to_cpu(migr_rec
->blocks_per_unit
) * 512;
10566 /* extend buffer size for parity disk */
10567 buf_size
+= __le32_to_cpu(migr_rec
->dest_depth_per_unit
) * 512;
10568 /* add space for stripe aligment */
10569 buf_size
+= old_data_stripe_length
;
10570 if (posix_memalign((void **)&buf
, 4096, buf_size
)) {
10571 dprintf("imsm: Cannot allocate checpoint buffer\n");
10575 max_position
= sra
->component_size
* ndata
;
10576 source_layout
= imsm_level_to_layout(map_src
->raid_level
);
10578 while (__le32_to_cpu(migr_rec
->curr_migr_unit
) <
10579 __le32_to_cpu(migr_rec
->num_migr_units
)) {
10580 /* current reshape position [blocks] */
10581 unsigned long long current_position
=
10582 __le32_to_cpu(migr_rec
->blocks_per_unit
)
10583 * __le32_to_cpu(migr_rec
->curr_migr_unit
);
10584 unsigned long long border
;
10586 /* Check that array hasn't become failed.
10588 degraded
= check_degradation_change(sra
, fds
, degraded
);
10589 if (degraded
> 1) {
10590 dprintf("imsm: Abort reshape due to degradation level (%i)\n", degraded
);
10594 next_step
= __le32_to_cpu(migr_rec
->blocks_per_unit
);
10596 if ((current_position
+ next_step
) > max_position
)
10597 next_step
= max_position
- current_position
;
10599 start
= current_position
* 512;
10601 /* align reading start to old geometry */
10602 start_buf_shift
= start
% old_data_stripe_length
;
10603 start_src
= start
- start_buf_shift
;
10605 border
= (start_src
/ odata
) - (start
/ ndata
);
10607 if (border
<= __le32_to_cpu(migr_rec
->dest_depth_per_unit
)) {
10608 /* save critical stripes to buf
10609 * start - start address of current unit
10610 * to backup [bytes]
10611 * start_src - start address of current unit
10612 * to backup alligned to source array
10615 unsigned long long next_step_filler
= 0;
10616 unsigned long long copy_length
= next_step
* 512;
10618 /* allign copy area length to stripe in old geometry */
10619 next_step_filler
= ((copy_length
+ start_buf_shift
)
10620 % old_data_stripe_length
);
10621 if (next_step_filler
)
10622 next_step_filler
= (old_data_stripe_length
10623 - next_step_filler
);
10624 dprintf("save_stripes() parameters: start = %llu,\tstart_src = %llu,\tnext_step*512 = %llu,\tstart_in_buf_shift = %llu,\tnext_step_filler = %llu\n",
10625 start
, start_src
, copy_length
,
10626 start_buf_shift
, next_step_filler
);
10628 if (save_stripes(fds
, offsets
, map_src
->num_members
,
10629 chunk
, map_src
->raid_level
,
10630 source_layout
, 0, NULL
, start_src
,
10632 next_step_filler
+ start_buf_shift
,
10634 dprintf("imsm: Cannot save stripes to buffer\n");
10637 /* Convert data to destination format and store it
10638 * in backup general migration area
10640 if (save_backup_imsm(st
, dev
, sra
,
10641 buf
+ start_buf_shift
, copy_length
)) {
10642 dprintf("imsm: Cannot save stripes to target devices\n");
10645 if (save_checkpoint_imsm(st
, sra
,
10646 UNIT_SRC_IN_CP_AREA
)) {
10647 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_IN_CP_AREA)\n");
10651 /* set next step to use whole border area */
10652 border
/= next_step
;
10654 next_step
*= border
;
10656 /* When data backed up, checkpoint stored,
10657 * kick the kernel to reshape unit of data
10659 next_step
= next_step
+ sra
->reshape_progress
;
10660 /* limit next step to array max position */
10661 if (next_step
> max_position
)
10662 next_step
= max_position
;
10663 sysfs_set_num(sra
, NULL
, "suspend_lo", sra
->reshape_progress
);
10664 sysfs_set_num(sra
, NULL
, "suspend_hi", next_step
);
10665 sra
->reshape_progress
= next_step
;
10667 /* wait until reshape finish */
10668 if (wait_for_reshape_imsm(sra
, ndata
)) {
10669 dprintf("wait_for_reshape_imsm returned error!\n");
10675 if (save_checkpoint_imsm(st
, sra
, UNIT_SRC_NORMAL
) == 1) {
10676 /* ignore error == 2, this can mean end of reshape here
10678 dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL)\n");
10684 /* clear migr_rec on disks after successful migration */
10687 memset(super
->migr_rec_buf
, 0, MIGR_REC_BUF_SIZE
);
10688 for (d
= super
->disks
; d
; d
= d
->next
) {
10689 if (d
->index
< 0 || is_failed(&d
->disk
))
10691 unsigned long long dsize
;
10693 get_dev_size(d
->fd
, NULL
, &dsize
);
10694 if (lseek64(d
->fd
, dsize
- MIGR_REC_POSITION
,
10696 if (write(d
->fd
, super
->migr_rec_buf
,
10697 MIGR_REC_BUF_SIZE
) != MIGR_REC_BUF_SIZE
)
10698 perror("Write migr_rec failed");
10702 /* return '1' if done */
10706 /* See Grow.c: abort_reshape() for further explanation */
10707 sysfs_set_num(sra
, NULL
, "suspend_lo", 0x7FFFFFFFFFFFFFFFULL
);
10708 sysfs_set_num(sra
, NULL
, "suspend_hi", 0);
10709 sysfs_set_num(sra
, NULL
, "suspend_lo", 0);
10714 #endif /* MDASSEMBLE */
10716 struct superswitch super_imsm
= {
10718 .examine_super
= examine_super_imsm
,
10719 .brief_examine_super
= brief_examine_super_imsm
,
10720 .brief_examine_subarrays
= brief_examine_subarrays_imsm
,
10721 .export_examine_super
= export_examine_super_imsm
,
10722 .detail_super
= detail_super_imsm
,
10723 .brief_detail_super
= brief_detail_super_imsm
,
10724 .write_init_super
= write_init_super_imsm
,
10725 .validate_geometry
= validate_geometry_imsm
,
10726 .add_to_super
= add_to_super_imsm
,
10727 .remove_from_super
= remove_from_super_imsm
,
10728 .detail_platform
= detail_platform_imsm
,
10729 .export_detail_platform
= export_detail_platform_imsm
,
10730 .kill_subarray
= kill_subarray_imsm
,
10731 .update_subarray
= update_subarray_imsm
,
10732 .load_container
= load_container_imsm
,
10733 .default_geometry
= default_geometry_imsm
,
10734 .get_disk_controller_domain
= imsm_get_disk_controller_domain
,
10735 .reshape_super
= imsm_reshape_super
,
10736 .manage_reshape
= imsm_manage_reshape
,
10737 .recover_backup
= recover_backup_imsm
,
10738 .copy_metadata
= copy_metadata_imsm
,
10740 .match_home
= match_home_imsm
,
10741 .uuid_from_super
= uuid_from_super_imsm
,
10742 .getinfo_super
= getinfo_super_imsm
,
10743 .getinfo_super_disks
= getinfo_super_disks_imsm
,
10744 .update_super
= update_super_imsm
,
10746 .avail_size
= avail_size_imsm
,
10747 .min_acceptable_spare_size
= min_acceptable_spare_size_imsm
,
10749 .compare_super
= compare_super_imsm
,
10751 .load_super
= load_super_imsm
,
10752 .init_super
= init_super_imsm
,
10753 .store_super
= store_super_imsm
,
10754 .free_super
= free_super_imsm
,
10755 .match_metadata_desc
= match_metadata_desc_imsm
,
10756 .container_content
= container_content_imsm
,
10757 .validate_container
= validate_container_imsm
,
10764 .open_new
= imsm_open_new
,
10765 .set_array_state
= imsm_set_array_state
,
10766 .set_disk
= imsm_set_disk
,
10767 .sync_metadata
= imsm_sync_metadata
,
10768 .activate_spare
= imsm_activate_spare
,
10769 .process_update
= imsm_process_update
,
10770 .prepare_update
= imsm_prepare_update
,
10771 #endif /* MDASSEMBLE */