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
28 /* MPB == Metadata Parameter Block */
29 #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
30 #define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
31 #define MPB_VERSION_RAID0 "1.0.00"
32 #define MPB_VERSION_RAID1 "1.1.00"
33 #define MPB_VERSION_RAID5 "1.2.02"
34 #define MAX_SIGNATURE_LENGTH 32
35 #define MAX_RAID_SERIAL_LEN 16
36 #define MPB_SECTOR_CNT 418
37 #define IMSM_RESERVED_SECTORS 4096
39 /* Disk configuration info. */
40 #define IMSM_MAX_DEVICES 255
42 __u8 serial
[MAX_RAID_SERIAL_LEN
];/* 0xD8 - 0xE7 ascii serial number */
43 __u32 total_blocks
; /* 0xE8 - 0xEB total blocks */
44 __u32 scsi_id
; /* 0xEC - 0xEF scsi ID */
45 __u32 status
; /* 0xF0 - 0xF3 */
46 #define SPARE_DISK 0x01 /* Spare */
47 #define CONFIGURED_DISK 0x02 /* Member of some RaidDev */
48 #define FAILED_DISK 0x04 /* Permanent failure */
49 #define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */
51 #define IMSM_DISK_FILLERS 5
52 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */
55 /* RAID map configuration infos. */
57 __u32 pba_of_lba0
; /* start address of partition */
58 __u32 blocks_per_member
;/* blocks per member */
59 __u32 num_data_stripes
; /* number of data stripes */
60 __u16 blocks_per_strip
;
61 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
62 #define IMSM_T_STATE_NORMAL 0
63 #define IMSM_T_STATE_UNINITIALIZED 1
64 #define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */
65 #define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */
67 #define IMSM_T_RAID0 0
68 #define IMSM_T_RAID1 1
69 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
70 __u8 num_members
; /* number of member disks */
72 __u32 filler
[7]; /* expansion area */
73 #define IMSM_ORD_REBUILD (1 << 24)
74 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
75 * top byte contains some flags
77 } __attribute__ ((packed
));
82 __u8 migr_state
; /* Normal or Migrating */
83 __u8 migr_type
; /* Initializing, Rebuilding, ... */
87 struct imsm_map map
[1];
88 /* here comes another one if migr_state */
89 } __attribute__ ((packed
));
92 __u8 volume
[MAX_RAID_SERIAL_LEN
];
95 __u32 status
; /* Persistent RaidDev status */
96 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
97 #define IMSM_DEV_FILLERS 12
98 __u32 filler
[IMSM_DEV_FILLERS
];
100 } __attribute__ ((packed
));
103 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
104 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
105 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
106 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
107 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
108 __u32 error_log_size
; /* 0x30 - 0x33 in bytes */
109 __u32 attributes
; /* 0x34 - 0x37 */
110 __u8 num_disks
; /* 0x38 Number of configured disks */
111 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
112 __u8 error_log_pos
; /* 0x3A */
113 __u8 fill
[1]; /* 0x3B */
114 __u32 cache_size
; /* 0x3c - 0x40 in mb */
115 __u32 orig_family_num
; /* 0x40 - 0x43 original family num */
116 __u32 pwr_cycle_count
; /* 0x44 - 0x47 simulated power cycle count for array */
117 __u32 bbm_log_size
; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */
118 #define IMSM_FILLERS 35
119 __u32 filler
[IMSM_FILLERS
]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */
120 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
121 /* here comes imsm_dev[num_raid_devs] */
122 /* here comes BBM logs */
123 } __attribute__ ((packed
));
125 #define BBM_LOG_MAX_ENTRIES 254
127 struct bbm_log_entry
{
128 __u64 defective_block_start
;
129 #define UNREADABLE 0xFFFFFFFF
130 __u32 spare_block_offset
;
131 __u16 remapped_marked_count
;
133 } __attribute__ ((__packed__
));
136 __u32 signature
; /* 0xABADB10C */
138 __u32 reserved_spare_block_count
; /* 0 */
139 __u32 reserved
; /* 0xFFFF */
140 __u64 first_spare_lba
;
141 struct bbm_log_entry mapped_block_entries
[BBM_LOG_MAX_ENTRIES
];
142 } __attribute__ ((__packed__
));
146 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
149 static unsigned int sector_count(__u32 bytes
)
151 return ((bytes
+ (512-1)) & (~(512-1))) / 512;
154 static unsigned int mpb_sectors(struct imsm_super
*mpb
)
156 return sector_count(__le32_to_cpu(mpb
->mpb_size
));
159 /* internal representation of IMSM metadata */
162 void *buf
; /* O_DIRECT buffer for reading/writing metadata */
163 struct imsm_super
*anchor
; /* immovable parameters */
165 size_t len
; /* size of the 'buf' allocation */
166 void *next_buf
; /* for realloc'ing buf from the manager */
168 int updates_pending
; /* count of pending updates for mdmon */
169 int creating_imsm
; /* flag to indicate container creation */
170 int current_vol
; /* index of raid device undergoing creation */
171 #define IMSM_MAX_RAID_DEVS 2
172 struct imsm_dev
*dev_tbl
[IMSM_MAX_RAID_DEVS
];
176 __u8 serial
[MAX_RAID_SERIAL_LEN
];
179 struct imsm_disk disk
;
182 struct dl
*add
; /* list of disks to add while mdmon active */
183 struct dl
*missing
; /* disks removed while we weren't looking */
184 struct bbm_log
*bbm_log
;
188 unsigned long long start
, size
;
191 /* definition of messages passed to imsm_process_update */
192 enum imsm_update_type
{
193 update_activate_spare
,
198 struct imsm_update_activate_spare
{
199 enum imsm_update_type type
;
203 struct imsm_update_activate_spare
*next
;
206 struct imsm_update_create_array
{
207 enum imsm_update_type type
;
212 struct imsm_update_add_disk
{
213 enum imsm_update_type type
;
216 static int imsm_env_devname_as_serial(void)
218 char *val
= getenv("IMSM_DEVNAME_AS_SERIAL");
220 if (val
&& atoi(val
) == 1)
227 static struct supertype
*match_metadata_desc_imsm(char *arg
)
229 struct supertype
*st
;
231 if (strcmp(arg
, "imsm") != 0 &&
232 strcmp(arg
, "default") != 0
236 st
= malloc(sizeof(*st
));
237 memset(st
, 0, sizeof(*st
));
238 st
->ss
= &super_imsm
;
239 st
->max_devs
= IMSM_MAX_DEVICES
;
240 st
->minor_version
= 0;
246 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
248 return &mpb
->sig
[MPB_SIG_LEN
];
252 /* retrieve a disk directly from the anchor when the anchor is known to be
253 * up-to-date, currently only at load time
255 static struct imsm_disk
*__get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
257 if (index
>= mpb
->num_disks
)
259 return &mpb
->disk
[index
];
263 /* retrieve a disk from the parsed metadata */
264 static struct imsm_disk
*get_imsm_disk(struct intel_super
*super
, __u8 index
)
268 for (d
= super
->disks
; d
; d
= d
->next
)
269 if (d
->index
== index
)
276 /* generate a checksum directly from the anchor when the anchor is known to be
277 * up-to-date, currently only at load or write_super after coalescing
279 static __u32
__gen_imsm_checksum(struct imsm_super
*mpb
)
281 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
282 __u32
*p
= (__u32
*) mpb
;
286 sum
+= __le32_to_cpu(*p
++);
288 return sum
- __le32_to_cpu(mpb
->check_sum
);
291 static size_t sizeof_imsm_map(struct imsm_map
*map
)
293 return sizeof(struct imsm_map
) + sizeof(__u32
) * (map
->num_members
- 1);
296 struct imsm_map
*get_imsm_map(struct imsm_dev
*dev
, int second_map
)
298 struct imsm_map
*map
= &dev
->vol
.map
[0];
300 if (second_map
&& !dev
->vol
.migr_state
)
302 else if (second_map
) {
305 return ptr
+ sizeof_imsm_map(map
);
311 /* return the size of the device.
312 * migr_state increases the returned size if map[0] were to be duplicated
314 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
, int migr_state
)
316 size_t size
= sizeof(*dev
) - sizeof(struct imsm_map
) +
317 sizeof_imsm_map(get_imsm_map(dev
, 0));
319 /* migrating means an additional map */
320 if (dev
->vol
.migr_state
)
321 size
+= sizeof_imsm_map(get_imsm_map(dev
, 1));
323 size
+= sizeof_imsm_map(get_imsm_map(dev
, 0));
328 static struct imsm_dev
*__get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
334 if (index
>= mpb
->num_raid_devs
)
337 /* devices start after all disks */
338 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
340 for (i
= 0; i
<= index
; i
++)
342 return _mpb
+ offset
;
344 offset
+= sizeof_imsm_dev(_mpb
+ offset
, 0);
349 static struct imsm_dev
*get_imsm_dev(struct intel_super
*super
, __u8 index
)
351 if (index
>= super
->anchor
->num_raid_devs
)
353 return super
->dev_tbl
[index
];
356 static __u32
get_imsm_ord_tbl_ent(struct imsm_dev
*dev
, int slot
)
358 struct imsm_map
*map
;
360 if (dev
->vol
.migr_state
)
361 map
= get_imsm_map(dev
, 1);
363 map
= get_imsm_map(dev
, 0);
365 /* top byte identifies disk under rebuild */
366 return __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
369 #define ord_to_idx(ord) (((ord) << 8) >> 8)
370 static __u32
get_imsm_disk_idx(struct imsm_dev
*dev
, int slot
)
372 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
374 return ord_to_idx(ord
);
377 static void set_imsm_ord_tbl_ent(struct imsm_map
*map
, int slot
, __u32 ord
)
379 map
->disk_ord_tbl
[slot
] = __cpu_to_le32(ord
);
382 static int get_imsm_raid_level(struct imsm_map
*map
)
384 if (map
->raid_level
== 1) {
385 if (map
->num_members
== 2)
391 return map
->raid_level
;
394 static int cmp_extent(const void *av
, const void *bv
)
396 const struct extent
*a
= av
;
397 const struct extent
*b
= bv
;
398 if (a
->start
< b
->start
)
400 if (a
->start
> b
->start
)
405 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
407 /* find a list of used extents on the given physical device */
408 struct extent
*rv
, *e
;
411 __u32 reservation
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
413 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
414 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
415 struct imsm_map
*map
= get_imsm_map(dev
, 0);
417 for (j
= 0; j
< map
->num_members
; j
++) {
418 __u32 index
= get_imsm_disk_idx(dev
, j
);
420 if (index
== dl
->index
)
424 rv
= malloc(sizeof(struct extent
) * (memberships
+ 1));
429 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
430 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
431 struct imsm_map
*map
= get_imsm_map(dev
, 0);
433 for (j
= 0; j
< map
->num_members
; j
++) {
434 __u32 index
= get_imsm_disk_idx(dev
, j
);
436 if (index
== dl
->index
) {
437 e
->start
= __le32_to_cpu(map
->pba_of_lba0
);
438 e
->size
= __le32_to_cpu(map
->blocks_per_member
);
443 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
445 /* determine the start of the metadata
446 * when no raid devices are defined use the default
447 * ...otherwise allow the metadata to truncate the value
448 * as is the case with older versions of imsm
451 struct extent
*last
= &rv
[memberships
- 1];
454 remainder
= __le32_to_cpu(dl
->disk
.total_blocks
) -
455 (last
->start
+ last
->size
);
456 if (reservation
> remainder
)
457 reservation
= remainder
;
459 e
->start
= __le32_to_cpu(dl
->disk
.total_blocks
) - reservation
;
464 /* try to determine how much space is reserved for metadata from
465 * the last get_extents() entry, otherwise fallback to the
468 static __u32
imsm_reserved_sectors(struct intel_super
*super
, struct dl
*dl
)
474 /* for spares just return a minimal reservation which will grow
475 * once the spare is picked up by an array
478 return MPB_SECTOR_CNT
;
480 e
= get_extents(super
, dl
);
482 return MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
484 /* scroll to last entry */
485 for (i
= 0; e
[i
].size
; i
++)
488 rv
= __le32_to_cpu(dl
->disk
.total_blocks
) - e
[i
].start
;
496 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
);
498 static void print_imsm_dev(struct imsm_dev
*dev
, int index
)
502 struct imsm_map
*map
= get_imsm_map(dev
, 0);
506 printf("[%s]:\n", dev
->volume
);
507 printf(" RAID Level : %d\n", get_imsm_raid_level(map
));
508 printf(" Members : %d\n", map
->num_members
);
509 for (slot
= 0; slot
< map
->num_members
; slot
++)
510 if (index
== get_imsm_disk_idx(dev
, slot
))
512 if (slot
< map
->num_members
) {
513 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
514 printf(" This Slot : %d%s\n", slot
,
515 ord
& IMSM_ORD_REBUILD
? " (out-of-sync)" : "");
517 printf(" This Slot : ?\n");
518 sz
= __le32_to_cpu(dev
->size_high
);
520 sz
+= __le32_to_cpu(dev
->size_low
);
521 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
522 human_size(sz
* 512));
523 sz
= __le32_to_cpu(map
->blocks_per_member
);
524 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
525 human_size(sz
* 512));
526 printf(" Sector Offset : %u\n",
527 __le32_to_cpu(map
->pba_of_lba0
));
528 printf(" Num Stripes : %u\n",
529 __le32_to_cpu(map
->num_data_stripes
));
530 printf(" Chunk Size : %u KiB\n",
531 __le16_to_cpu(map
->blocks_per_strip
) / 2);
532 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
533 printf(" Migrate State : %s", dev
->vol
.migr_state
? "migrating" : "idle");
534 if (dev
->vol
.migr_state
)
535 printf(": %s", dev
->vol
.migr_type
? "rebuilding" : "initializing");
537 printf(" Map State : %s", map_state_str
[map
->map_state
]);
538 if (dev
->vol
.migr_state
) {
539 struct imsm_map
*map
= get_imsm_map(dev
, 1);
540 printf(" <-- %s", map_state_str
[map
->map_state
]);
543 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
546 static void print_imsm_disk(struct imsm_super
*mpb
, int index
, __u32 reserved
)
548 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, index
);
549 char str
[MAX_RAID_SERIAL_LEN
+ 1];
557 snprintf(str
, MAX_RAID_SERIAL_LEN
+ 1, "%s", disk
->serial
);
558 printf(" Disk%02d Serial : %s\n", index
, str
);
559 s
= __le32_to_cpu(disk
->status
);
560 printf(" State :%s%s%s%s\n", s
&SPARE_DISK
? " spare" : "",
561 s
&CONFIGURED_DISK
? " active" : "",
562 s
&FAILED_DISK
? " failed" : "",
563 s
&USABLE_DISK
? " usable" : "");
564 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
565 sz
= __le32_to_cpu(disk
->total_blocks
) - reserved
;
566 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
567 human_size(sz
* 512));
570 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
572 struct intel_super
*super
= st
->sb
;
573 struct imsm_super
*mpb
= super
->anchor
;
574 char str
[MAX_SIGNATURE_LENGTH
];
579 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
582 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
583 printf(" Magic : %s\n", str
);
584 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
585 printf(" Version : %s\n", get_imsm_version(mpb
));
586 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
587 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
588 getinfo_super_imsm(st
, &info
);
589 fname_from_uuid(st
, &info
, nbuf
,'-');
590 printf(" UUID : %s\n", nbuf
+ 5);
591 sum
= __le32_to_cpu(mpb
->check_sum
);
592 printf(" Checksum : %08x %s\n", sum
,
593 __gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
594 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
));
595 printf(" Disks : %d\n", mpb
->num_disks
);
596 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
597 print_imsm_disk(mpb
, super
->disks
->index
, reserved
);
598 if (super
->bbm_log
) {
599 struct bbm_log
*log
= super
->bbm_log
;
602 printf("Bad Block Management Log:\n");
603 printf(" Log Size : %d\n", __le32_to_cpu(mpb
->bbm_log_size
));
604 printf(" Signature : %x\n", __le32_to_cpu(log
->signature
));
605 printf(" Entry Count : %d\n", __le32_to_cpu(log
->entry_count
));
606 printf(" Spare Blocks : %d\n", __le32_to_cpu(log
->reserved_spare_block_count
));
607 printf(" First Spare : %llx\n", __le64_to_cpu(log
->first_spare_lba
));
609 for (i
= 0; i
< mpb
->num_raid_devs
; i
++)
610 print_imsm_dev(__get_imsm_dev(mpb
, i
), super
->disks
->index
);
611 for (i
= 0; i
< mpb
->num_disks
; i
++) {
612 if (i
== super
->disks
->index
)
614 print_imsm_disk(mpb
, i
, reserved
);
618 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
);
620 static void brief_examine_super_imsm(struct supertype
*st
)
622 /* We just write a generic IMSM ARRAY entry */
626 getinfo_super_imsm(st
, &info
);
627 fname_from_uuid(st
, &info
, nbuf
,'-');
628 printf("ARRAY /dev/imsm metadata=imsm auto=md UUID=%s\n", nbuf
+ 5);
631 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
633 printf("%s\n", __FUNCTION__
);
636 static void brief_detail_super_imsm(struct supertype
*st
)
640 getinfo_super_imsm(st
, &info
);
641 fname_from_uuid(st
, &info
, nbuf
,'-');
642 printf(" UUID=%s", nbuf
+ 5);
646 static int match_home_imsm(struct supertype
*st
, char *homehost
)
648 printf("%s\n", __FUNCTION__
);
653 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
655 /* The uuid returned here is used for:
656 * uuid to put into bitmap file (Create, Grow)
657 * uuid for backup header when saving critical section (Grow)
658 * comparing uuids when re-adding a device into an array
659 * In these cases the uuid required is that of the data-array,
660 * not the device-set.
661 * uuid to recognise same set when adding a missing device back
662 * to an array. This is a uuid for the device-set.
664 * For each of these we can make do with a truncated
665 * or hashed uuid rather than the original, as long as
667 * In each case the uuid required is that of the data-array,
668 * not the device-set.
670 /* imsm does not track uuid's so we synthesis one using sha1 on
671 * - The signature (Which is constant for all imsm array, but no matter)
672 * - the family_num of the container
673 * - the index number of the volume
674 * - the 'serial' number of the volume.
675 * Hopefully these are all constant.
677 struct intel_super
*super
= st
->sb
;
681 struct imsm_dev
*dev
= NULL
;
684 sha1_process_bytes(super
->anchor
->sig
, MAX_SIGNATURE_LENGTH
, &ctx
);
685 sha1_process_bytes(&super
->anchor
->family_num
, sizeof(__u32
), &ctx
);
686 if (super
->current_vol
>= 0)
687 dev
= get_imsm_dev(super
, super
->current_vol
);
689 __u32 vol
= super
->current_vol
;
690 sha1_process_bytes(&vol
, sizeof(vol
), &ctx
);
691 sha1_process_bytes(dev
->volume
, MAX_RAID_SERIAL_LEN
, &ctx
);
693 sha1_finish_ctx(&ctx
, buf
);
694 memcpy(uuid
, buf
, 4*4);
699 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
701 __u8
*v
= get_imsm_version(mpb
);
702 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
703 char major
[] = { 0, 0, 0 };
704 char minor
[] = { 0 ,0, 0 };
705 char patch
[] = { 0, 0, 0 };
706 char *ver_parse
[] = { major
, minor
, patch
};
710 while (*v
!= '\0' && v
< end
) {
711 if (*v
!= '.' && j
< 2)
712 ver_parse
[i
][j
++] = *v
;
720 *m
= strtol(minor
, NULL
, 0);
721 *p
= strtol(patch
, NULL
, 0);
725 static int imsm_level_to_layout(int level
)
733 return ALGORITHM_LEFT_ASYMMETRIC
;
740 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
)
742 struct intel_super
*super
= st
->sb
;
743 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
744 struct imsm_map
*map
= get_imsm_map(dev
, 0);
746 info
->container_member
= super
->current_vol
;
747 info
->array
.raid_disks
= map
->num_members
;
748 info
->array
.level
= get_imsm_raid_level(map
);
749 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
750 info
->array
.md_minor
= -1;
751 info
->array
.ctime
= 0;
752 info
->array
.utime
= 0;
753 info
->array
.chunk_size
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
754 info
->array
.state
= !dev
->vol
.dirty
;
756 info
->disk
.major
= 0;
757 info
->disk
.minor
= 0;
759 info
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
760 info
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
761 memset(info
->uuid
, 0, sizeof(info
->uuid
));
763 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
|| dev
->vol
.dirty
)
764 info
->resync_start
= 0;
765 else if (dev
->vol
.migr_state
)
766 info
->resync_start
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
768 info
->resync_start
= ~0ULL;
770 strncpy(info
->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
771 info
->name
[MAX_RAID_SERIAL_LEN
] = 0;
773 info
->array
.major_version
= -1;
774 info
->array
.minor_version
= -2;
775 sprintf(info
->text_version
, "/%s/%d",
776 devnum2devname(st
->container_dev
),
777 info
->container_member
);
778 info
->safe_mode_delay
= 4000; /* 4 secs like the Matrix driver */
779 uuid_from_super_imsm(st
, info
->uuid
);
783 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
)
785 struct intel_super
*super
= st
->sb
;
786 struct imsm_disk
*disk
;
790 if (super
->current_vol
>= 0) {
791 getinfo_super_imsm_volume(st
, info
);
795 /* Set raid_disks to zero so that Assemble will always pull in valid
798 info
->array
.raid_disks
= 0;
799 info
->array
.level
= LEVEL_CONTAINER
;
800 info
->array
.layout
= 0;
801 info
->array
.md_minor
= -1;
802 info
->array
.ctime
= 0; /* N/A for imsm */
803 info
->array
.utime
= 0;
804 info
->array
.chunk_size
= 0;
806 info
->disk
.major
= 0;
807 info
->disk
.minor
= 0;
808 info
->disk
.raid_disk
= -1;
809 info
->reshape_active
= 0;
810 info
->array
.major_version
= -1;
811 info
->array
.minor_version
= -2;
812 strcpy(info
->text_version
, "imsm");
813 info
->safe_mode_delay
= 0;
814 info
->disk
.number
= -1;
815 info
->disk
.state
= 0;
819 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
821 disk
= &super
->disks
->disk
;
822 info
->data_offset
= __le32_to_cpu(disk
->total_blocks
) - reserved
;
823 info
->component_size
= reserved
;
824 s
= __le32_to_cpu(disk
->status
);
825 info
->disk
.state
= s
& CONFIGURED_DISK
? (1 << MD_DISK_ACTIVE
) : 0;
826 info
->disk
.state
|= s
& FAILED_DISK
? (1 << MD_DISK_FAULTY
) : 0;
827 info
->disk
.state
|= s
& USABLE_DISK
? (1 << MD_DISK_SYNC
) : 0;
832 memcpy(info
->uuid
, uuid_match_any
, sizeof(int[4]));
834 uuid_from_super_imsm(st
, info
->uuid
);
837 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
838 char *update
, char *devname
, int verbose
,
839 int uuid_set
, char *homehost
)
843 /* For 'assemble' and 'force' we need to return non-zero if any
844 * change was made. For others, the return value is ignored.
845 * Update options are:
846 * force-one : This device looks a bit old but needs to be included,
847 * update age info appropriately.
848 * assemble: clear any 'faulty' flag to allow this device to
850 * force-array: Array is degraded but being forced, mark it clean
851 * if that will be needed to assemble it.
853 * newdev: not used ????
854 * grow: Array has gained a new device - this is currently for
856 * resync: mark as dirty so a resync will happen.
857 * name: update the name - preserving the homehost
859 * Following are not relevant for this imsm:
860 * sparc2.2 : update from old dodgey metadata
861 * super-minor: change the preferred_minor number
862 * summaries: update redundant counters.
863 * uuid: Change the uuid of the array to match watch is given
864 * homehost: update the recorded homehost
865 * _reshape_progress: record new reshape_progress position.
868 //struct intel_super *super = st->sb;
869 //struct imsm_super *mpb = super->mpb;
871 if (strcmp(update
, "grow") == 0) {
873 if (strcmp(update
, "resync") == 0) {
874 /* dev->vol.dirty = 1; */
877 /* IMSM has no concept of UUID or homehost */
882 static size_t disks_to_mpb_size(int disks
)
886 size
= sizeof(struct imsm_super
);
887 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
888 size
+= 2 * sizeof(struct imsm_dev
);
889 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
890 size
+= (4 - 2) * sizeof(struct imsm_map
);
891 /* 4 possible disk_ord_tbl's */
892 size
+= 4 * (disks
- 1) * sizeof(__u32
);
897 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
)
899 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
902 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
905 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
909 * 0 same, or first was empty, and second was copied
910 * 1 second had wrong number
914 struct intel_super
*first
= st
->sb
;
915 struct intel_super
*sec
= tst
->sb
;
923 if (memcmp(first
->anchor
->sig
, sec
->anchor
->sig
, MAX_SIGNATURE_LENGTH
) != 0)
926 /* if an anchor does not have num_raid_devs set then it is a free
929 if (first
->anchor
->num_raid_devs
> 0 &&
930 sec
->anchor
->num_raid_devs
> 0) {
931 if (first
->anchor
->family_num
!= sec
->anchor
->family_num
)
935 /* if 'first' is a spare promote it to a populated mpb with sec's
938 if (first
->anchor
->num_raid_devs
== 0 &&
939 sec
->anchor
->num_raid_devs
> 0) {
940 first
->anchor
->num_raid_devs
= sec
->anchor
->num_raid_devs
;
941 first
->anchor
->family_num
= sec
->anchor
->family_num
;
947 static void fd2devname(int fd
, char *name
)
956 if (fstat(fd
, &st
) != 0)
958 sprintf(path
, "/sys/dev/block/%d:%d",
959 major(st
.st_rdev
), minor(st
.st_rdev
));
961 rv
= readlink(path
, dname
, sizeof(dname
));
966 nm
= strrchr(dname
, '/');
968 snprintf(name
, MAX_RAID_SERIAL_LEN
, "/dev/%s", nm
);
972 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
974 static int imsm_read_serial(int fd
, char *devname
,
975 __u8 serial
[MAX_RAID_SERIAL_LEN
])
977 unsigned char scsi_serial
[255];
983 memset(scsi_serial
, 0, sizeof(scsi_serial
));
985 rv
= scsi_get_serial(fd
, scsi_serial
, sizeof(scsi_serial
));
987 if (rv
&& imsm_env_devname_as_serial()) {
988 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
989 fd2devname(fd
, (char *) serial
);
996 Name
": Failed to retrieve serial for %s\n",
1001 /* trim leading whitespace */
1002 rsp_len
= scsi_serial
[3];
1003 rsp_buf
= (char *) &scsi_serial
[4];
1008 /* truncate len to the end of rsp_buf if necessary */
1009 if (c
+ MAX_RAID_SERIAL_LEN
> rsp_buf
+ rsp_len
)
1010 len
= rsp_len
- (c
- rsp_buf
);
1012 len
= MAX_RAID_SERIAL_LEN
;
1014 /* initialize the buffer and copy rsp_buf characters */
1015 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
1016 memcpy(serial
, c
, len
);
1018 /* trim trailing whitespace starting with the last character copied */
1019 c
= (char *) &serial
[len
- 1];
1020 while (isspace(*c
) || *c
== '\0')
1026 static int serialcmp(__u8
*s1
, __u8
*s2
)
1028 return strncmp((char *) s1
, (char *) s2
, MAX_RAID_SERIAL_LEN
);
1031 static void serialcpy(__u8
*dest
, __u8
*src
)
1033 strncpy((char *) dest
, (char *) src
, MAX_RAID_SERIAL_LEN
);
1037 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
1044 __u8 serial
[MAX_RAID_SERIAL_LEN
];
1046 rv
= imsm_read_serial(fd
, devname
, serial
);
1051 /* check if this is a disk we have seen before. it may be a spare in
1052 * super->disks while the current anchor believes it is a raid member,
1053 * check if we need to update dl->index
1055 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1056 if (serialcmp(dl
->serial
, serial
) == 0)
1060 dl
= malloc(sizeof(*dl
));
1067 Name
": failed to allocate disk buffer for %s\n",
1074 dl
->major
= major(stb
.st_rdev
);
1075 dl
->minor
= minor(stb
.st_rdev
);
1076 dl
->next
= super
->disks
;
1077 dl
->fd
= keep_fd
? fd
: -1;
1078 dl
->devname
= devname
? strdup(devname
) : NULL
;
1079 serialcpy(dl
->serial
, serial
);
1081 } else if (keep_fd
) {
1086 /* look up this disk's index in the current anchor */
1087 for (i
= 0; i
< super
->anchor
->num_disks
; i
++) {
1088 struct imsm_disk
*disk_iter
;
1090 disk_iter
= __get_imsm_disk(super
->anchor
, i
);
1092 if (serialcmp(disk_iter
->serial
, dl
->serial
) == 0) {
1095 dl
->disk
= *disk_iter
;
1096 status
= __le32_to_cpu(dl
->disk
.status
);
1097 /* only set index on disks that are a member of a
1098 * populated contianer, i.e. one with raid_devs
1100 if (status
& FAILED_DISK
)
1102 else if (status
& SPARE_DISK
)
1111 /* no match, maybe a stale failed drive */
1112 if (i
== super
->anchor
->num_disks
&& dl
->index
>= 0) {
1113 dl
->disk
= *__get_imsm_disk(super
->anchor
, dl
->index
);
1114 if (__le32_to_cpu(dl
->disk
.status
) & FAILED_DISK
)
1124 static void imsm_copy_dev(struct imsm_dev
*dest
, struct imsm_dev
*src
)
1126 memcpy(dest
, src
, sizeof_imsm_dev(src
, 0));
1130 /* When migrating map0 contains the 'destination' state while map1
1131 * contains the current state. When not migrating map0 contains the
1132 * current state. This routine assumes that map[0].map_state is set to
1133 * the current array state before being called.
1135 * Migration is indicated by one of the following states
1136 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
1137 * 2/ Initialize (migr_state=1 migr_type=0 map0state=normal
1138 * map1state=unitialized)
1139 * 3/ Verify (Resync) (migr_state=1 migr_type=1 map0state=normal
1141 * 4/ Rebuild (migr_state=1 migr_type=1 map0state=normal
1142 * map1state=degraded)
1144 static void migrate(struct imsm_dev
*dev
, __u8 to_state
, int rebuild_resync
)
1146 struct imsm_map
*dest
;
1147 struct imsm_map
*src
= get_imsm_map(dev
, 0);
1149 dev
->vol
.migr_state
= 1;
1150 dev
->vol
.migr_type
= rebuild_resync
;
1151 dev
->vol
.curr_migr_unit
= 0;
1152 dest
= get_imsm_map(dev
, 1);
1154 memcpy(dest
, src
, sizeof_imsm_map(src
));
1155 src
->map_state
= to_state
;
1158 static void end_migration(struct imsm_dev
*dev
, __u8 map_state
)
1160 struct imsm_map
*map
= get_imsm_map(dev
, 0);
1162 dev
->vol
.migr_state
= 0;
1163 dev
->vol
.curr_migr_unit
= 0;
1164 map
->map_state
= map_state
;
1168 static int parse_raid_devices(struct intel_super
*super
)
1171 struct imsm_dev
*dev_new
;
1172 size_t len
, len_migr
;
1173 size_t space_needed
= 0;
1174 struct imsm_super
*mpb
= super
->anchor
;
1176 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1177 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
1179 len
= sizeof_imsm_dev(dev_iter
, 0);
1180 len_migr
= sizeof_imsm_dev(dev_iter
, 1);
1182 space_needed
+= len_migr
- len
;
1184 dev_new
= malloc(len_migr
);
1187 imsm_copy_dev(dev_new
, dev_iter
);
1188 super
->dev_tbl
[i
] = dev_new
;
1191 /* ensure that super->buf is large enough when all raid devices
1194 if (__le32_to_cpu(mpb
->mpb_size
) + space_needed
> super
->len
) {
1197 len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + space_needed
, 512);
1198 if (posix_memalign(&buf
, 512, len
) != 0)
1201 memcpy(buf
, super
->buf
, len
);
1210 /* retrieve a pointer to the bbm log which starts after all raid devices */
1211 struct bbm_log
*__get_imsm_bbm_log(struct imsm_super
*mpb
)
1215 if (__le32_to_cpu(mpb
->bbm_log_size
)) {
1217 ptr
+= mpb
->mpb_size
- __le32_to_cpu(mpb
->bbm_log_size
);
1223 static void __free_imsm(struct intel_super
*super
, int free_disks
);
1225 /* load_imsm_mpb - read matrix metadata
1226 * allocates super->mpb to be freed by free_super
1228 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
1230 unsigned long long dsize
;
1231 unsigned long long sectors
;
1233 struct imsm_super
*anchor
;
1237 get_dev_size(fd
, NULL
, &dsize
);
1239 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
1242 Name
": Cannot seek to anchor block on %s: %s\n",
1243 devname
, strerror(errno
));
1247 if (posix_memalign((void**)&anchor
, 512, 512) != 0) {
1250 Name
": Failed to allocate imsm anchor buffer"
1251 " on %s\n", devname
);
1254 if (read(fd
, anchor
, 512) != 512) {
1257 Name
": Cannot read anchor block on %s: %s\n",
1258 devname
, strerror(errno
));
1263 if (strncmp((char *) anchor
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
1266 Name
": no IMSM anchor on %s\n", devname
);
1271 __free_imsm(super
, 0);
1272 super
->len
= ROUND_UP(anchor
->mpb_size
, 512);
1273 if (posix_memalign(&super
->buf
, 512, super
->len
) != 0) {
1276 Name
": unable to allocate %zu byte mpb buffer\n",
1281 memcpy(super
->buf
, anchor
, 512);
1283 sectors
= mpb_sectors(anchor
) - 1;
1286 rc
= load_imsm_disk(fd
, super
, devname
, 0);
1288 rc
= parse_raid_devices(super
);
1292 /* read the extended mpb */
1293 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
1296 Name
": Cannot seek to extended mpb on %s: %s\n",
1297 devname
, strerror(errno
));
1301 if (read(fd
, super
->buf
+ 512, super
->len
- 512) != super
->len
- 512) {
1304 Name
": Cannot read extended mpb on %s: %s\n",
1305 devname
, strerror(errno
));
1309 check_sum
= __gen_imsm_checksum(super
->anchor
);
1310 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
1313 Name
": IMSM checksum %x != %x on %s\n",
1314 check_sum
, __le32_to_cpu(super
->anchor
->check_sum
),
1319 /* FIXME the BBM log is disk specific so we cannot use this global
1320 * buffer for all disks. Ok for now since we only look at the global
1321 * bbm_log_size parameter to gate assembly
1323 super
->bbm_log
= __get_imsm_bbm_log(super
->anchor
);
1325 rc
= load_imsm_disk(fd
, super
, devname
, 0);
1327 rc
= parse_raid_devices(super
);
1332 static void __free_imsm_disk(struct dl
*d
)
1341 static void free_imsm_disks(struct intel_super
*super
)
1345 while (super
->disks
) {
1347 super
->disks
= d
->next
;
1348 __free_imsm_disk(d
);
1350 while (super
->missing
) {
1352 super
->missing
= d
->next
;
1353 __free_imsm_disk(d
);
1358 /* free all the pieces hanging off of a super pointer */
1359 static void __free_imsm(struct intel_super
*super
, int free_disks
)
1368 free_imsm_disks(super
);
1369 for (i
= 0; i
< IMSM_MAX_RAID_DEVS
; i
++)
1370 if (super
->dev_tbl
[i
]) {
1371 free(super
->dev_tbl
[i
]);
1372 super
->dev_tbl
[i
] = NULL
;
1376 static void free_imsm(struct intel_super
*super
)
1378 __free_imsm(super
, 1);
1382 static void free_super_imsm(struct supertype
*st
)
1384 struct intel_super
*super
= st
->sb
;
1393 static struct intel_super
*alloc_super(int creating_imsm
)
1395 struct intel_super
*super
= malloc(sizeof(*super
));
1398 memset(super
, 0, sizeof(*super
));
1399 super
->creating_imsm
= creating_imsm
;
1400 super
->current_vol
= -1;
1407 /* find_missing - helper routine for load_super_imsm_all that identifies
1408 * disks that have disappeared from the system. This routine relies on
1409 * the mpb being uptodate, which it is at load time.
1411 static int find_missing(struct intel_super
*super
)
1414 struct imsm_super
*mpb
= super
->anchor
;
1416 struct imsm_disk
*disk
;
1419 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1420 disk
= __get_imsm_disk(mpb
, i
);
1421 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1422 if (serialcmp(dl
->disk
.serial
, disk
->serial
) == 0)
1426 /* ok we have a 'disk' without a live entry in
1429 status
= __le32_to_cpu(disk
->status
);
1430 if (status
& FAILED_DISK
|| !(status
& USABLE_DISK
))
1431 continue; /* never mind, already marked */
1433 dl
= malloc(sizeof(*dl
));
1439 dl
->devname
= strdup("missing");
1441 serialcpy(dl
->serial
, disk
->serial
);
1443 dl
->next
= super
->missing
;
1444 super
->missing
= dl
;
1450 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
1451 char *devname
, int keep_fd
)
1454 struct intel_super
*super
;
1455 struct mdinfo
*sd
, *best
= NULL
;
1462 /* check if this disk is a member of an active array */
1463 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
1467 if (sra
->array
.major_version
!= -1 ||
1468 sra
->array
.minor_version
!= -2 ||
1469 strcmp(sra
->text_version
, "imsm") != 0)
1472 super
= alloc_super(0);
1476 /* find the most up to date disk in this array, skipping spares */
1477 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
1478 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
1479 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
1484 rv
= load_imsm_mpb(dfd
, super
, NULL
);
1488 if (super
->anchor
->num_raid_devs
== 0)
1491 gen
= __le32_to_cpu(super
->anchor
->generation_num
);
1492 if (!best
|| gen
> bestgen
) {
1507 /* load the most up to date anchor */
1508 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
1509 dfd
= dev_open(nm
, O_RDONLY
);
1514 rv
= load_imsm_mpb(dfd
, super
, NULL
);
1521 /* re-parse the disk list with the current anchor */
1522 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
1523 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
1524 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
1529 load_imsm_disk(dfd
, super
, NULL
, keep_fd
);
1535 if (find_missing(super
) != 0) {
1540 if (st
->subarray
[0]) {
1541 if (atoi(st
->subarray
) <= super
->anchor
->num_raid_devs
)
1542 super
->current_vol
= atoi(st
->subarray
);
1548 st
->container_dev
= fd2devnum(fd
);
1549 if (st
->ss
== NULL
) {
1550 st
->ss
= &super_imsm
;
1551 st
->minor_version
= 0;
1552 st
->max_devs
= IMSM_MAX_DEVICES
;
1554 st
->loaded_container
= 1;
1560 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
1562 struct intel_super
*super
;
1566 if (load_super_imsm_all(st
, fd
, &st
->sb
, devname
, 1) == 0)
1569 if (st
->subarray
[0])
1570 return 1; /* FIXME */
1572 super
= alloc_super(0);
1575 Name
": malloc of %zu failed.\n",
1580 rv
= load_imsm_mpb(fd
, super
, devname
);
1585 Name
": Failed to load all information "
1586 "sections on %s\n", devname
);
1592 if (st
->ss
== NULL
) {
1593 st
->ss
= &super_imsm
;
1594 st
->minor_version
= 0;
1595 st
->max_devs
= IMSM_MAX_DEVICES
;
1597 st
->loaded_container
= 0;
1602 static __u16
info_to_blocks_per_strip(mdu_array_info_t
*info
)
1604 if (info
->level
== 1)
1606 return info
->chunk_size
>> 9;
1609 static __u32
info_to_num_data_stripes(mdu_array_info_t
*info
)
1613 num_stripes
= (info
->size
* 2) / info_to_blocks_per_strip(info
);
1614 if (info
->level
== 1)
1620 static __u32
info_to_blocks_per_member(mdu_array_info_t
*info
)
1622 return (info
->size
* 2) & ~(info_to_blocks_per_strip(info
) - 1);
1625 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
1626 unsigned long long size
, char *name
,
1627 char *homehost
, int *uuid
)
1629 /* We are creating a volume inside a pre-existing container.
1630 * so st->sb is already set.
1632 struct intel_super
*super
= st
->sb
;
1633 struct imsm_super
*mpb
= super
->anchor
;
1634 struct imsm_dev
*dev
;
1635 struct imsm_vol
*vol
;
1636 struct imsm_map
*map
;
1637 int idx
= mpb
->num_raid_devs
;
1639 unsigned long long array_blocks
;
1641 size_t size_old
, size_new
;
1643 if (mpb
->num_raid_devs
>= 2) {
1644 fprintf(stderr
, Name
": This imsm-container already has the "
1645 "maximum of 2 volumes\n");
1649 /* ensure the mpb is large enough for the new data */
1650 size_old
= __le32_to_cpu(mpb
->mpb_size
);
1651 size_new
= disks_to_mpb_size(info
->nr_disks
);
1652 if (size_new
> size_old
) {
1654 size_t size_round
= ROUND_UP(size_new
, 512);
1656 if (posix_memalign(&mpb_new
, 512, size_round
) != 0) {
1657 fprintf(stderr
, Name
": could not allocate new mpb\n");
1660 memcpy(mpb_new
, mpb
, size_old
);
1663 super
->anchor
= mpb_new
;
1664 mpb
->mpb_size
= __cpu_to_le32(size_new
);
1665 memset(mpb_new
+ size_old
, 0, size_round
- size_old
);
1667 super
->current_vol
= idx
;
1668 /* when creating the first raid device in this container set num_disks
1669 * to zero, i.e. delete this spare and add raid member devices in
1670 * add_to_super_imsm_volume()
1672 if (super
->current_vol
== 0)
1674 sprintf(st
->subarray
, "%d", idx
);
1675 dev
= malloc(sizeof(*dev
) + sizeof(__u32
) * (info
->raid_disks
- 1));
1677 fprintf(stderr
, Name
": could not allocate raid device\n");
1680 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
1681 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
1682 info
->layout
, info
->chunk_size
,
1684 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
1685 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
1686 dev
->status
= __cpu_to_le32(0);
1687 dev
->reserved_blocks
= __cpu_to_le32(0);
1689 vol
->migr_state
= 0;
1692 vol
->curr_migr_unit
= 0;
1693 for (i
= 0; i
< idx
; i
++) {
1694 struct imsm_dev
*prev
= get_imsm_dev(super
, i
);
1695 struct imsm_map
*pmap
= get_imsm_map(prev
, 0);
1697 offset
+= __le32_to_cpu(pmap
->blocks_per_member
);
1698 offset
+= IMSM_RESERVED_SECTORS
;
1700 map
= get_imsm_map(dev
, 0);
1701 map
->pba_of_lba0
= __cpu_to_le32(offset
);
1702 map
->blocks_per_member
= __cpu_to_le32(info_to_blocks_per_member(info
));
1703 map
->blocks_per_strip
= __cpu_to_le16(info_to_blocks_per_strip(info
));
1704 map
->num_data_stripes
= __cpu_to_le32(info_to_num_data_stripes(info
));
1705 map
->map_state
= info
->level
? IMSM_T_STATE_UNINITIALIZED
:
1706 IMSM_T_STATE_NORMAL
;
1708 if (info
->level
== 1 && info
->raid_disks
> 2) {
1709 fprintf(stderr
, Name
": imsm does not support more than 2 disks"
1710 "in a raid1 volume\n");
1713 if (info
->level
== 10)
1714 map
->raid_level
= 1;
1716 map
->raid_level
= info
->level
;
1718 map
->num_members
= info
->raid_disks
;
1719 for (i
= 0; i
< map
->num_members
; i
++) {
1720 /* initialized in add_to_super */
1721 set_imsm_ord_tbl_ent(map
, i
, 0);
1723 mpb
->num_raid_devs
++;
1724 super
->dev_tbl
[super
->current_vol
] = dev
;
1729 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
1730 unsigned long long size
, char *name
,
1731 char *homehost
, int *uuid
)
1733 /* This is primarily called by Create when creating a new array.
1734 * We will then get add_to_super called for each component, and then
1735 * write_init_super called to write it out to each device.
1736 * For IMSM, Create can create on fresh devices or on a pre-existing
1738 * To create on a pre-existing array a different method will be called.
1739 * This one is just for fresh drives.
1741 struct intel_super
*super
;
1742 struct imsm_super
*mpb
;
1750 return init_super_imsm_volume(st
, info
, size
, name
, homehost
,
1753 super
= alloc_super(1);
1756 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
1757 if (posix_memalign(&super
->buf
, 512, mpb_size
) != 0) {
1762 memset(mpb
, 0, mpb_size
);
1764 memcpy(mpb
->sig
, MPB_SIGNATURE
, strlen(MPB_SIGNATURE
));
1765 memcpy(mpb
->sig
+ strlen(MPB_SIGNATURE
), MPB_VERSION_RAID5
,
1766 strlen(MPB_VERSION_RAID5
));
1767 mpb
->mpb_size
= mpb_size
;
1774 static void add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
1775 int fd
, char *devname
)
1777 struct intel_super
*super
= st
->sb
;
1778 struct imsm_super
*mpb
= super
->anchor
;
1780 struct imsm_dev
*dev
;
1781 struct imsm_map
*map
;
1784 dev
= get_imsm_dev(super
, super
->current_vol
);
1785 map
= get_imsm_map(dev
, 0);
1787 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1788 if (dl
->major
== dk
->major
&&
1789 dl
->minor
== dk
->minor
)
1792 if (!dl
|| ! (dk
->state
& (1<<MD_DISK_SYNC
)))
1795 /* add a pristine spare to the metadata */
1796 if (dl
->index
< 0) {
1797 dl
->index
= super
->anchor
->num_disks
;
1798 super
->anchor
->num_disks
++;
1800 set_imsm_ord_tbl_ent(map
, dk
->number
, dl
->index
);
1801 status
= CONFIGURED_DISK
| USABLE_DISK
;
1802 dl
->disk
.status
= __cpu_to_le32(status
);
1804 /* if we are creating the first raid device update the family number */
1805 if (super
->current_vol
== 0) {
1807 struct imsm_dev
*_dev
= __get_imsm_dev(mpb
, 0);
1808 struct imsm_disk
*_disk
= __get_imsm_disk(mpb
, dl
->index
);
1812 sum
= __gen_imsm_checksum(mpb
);
1813 mpb
->family_num
= __cpu_to_le32(sum
);
1817 static void add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
1818 int fd
, char *devname
)
1820 struct intel_super
*super
= st
->sb
;
1822 unsigned long long size
;
1827 if (super
->current_vol
>= 0) {
1828 add_to_super_imsm_volume(st
, dk
, fd
, devname
);
1833 dd
= malloc(sizeof(*dd
));
1836 Name
": malloc failed %s:%d.\n", __func__
, __LINE__
);
1839 memset(dd
, 0, sizeof(*dd
));
1840 dd
->major
= major(stb
.st_rdev
);
1841 dd
->minor
= minor(stb
.st_rdev
);
1843 dd
->devname
= devname
? strdup(devname
) : NULL
;
1845 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
1848 Name
": failed to retrieve scsi serial, aborting\n");
1853 get_dev_size(fd
, NULL
, &size
);
1855 status
= USABLE_DISK
| SPARE_DISK
;
1856 serialcpy(dd
->disk
.serial
, dd
->serial
);
1857 dd
->disk
.total_blocks
= __cpu_to_le32(size
);
1858 dd
->disk
.status
= __cpu_to_le32(status
);
1859 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
1860 dd
->disk
.scsi_id
= __cpu_to_le32(id
);
1862 dd
->disk
.scsi_id
= __cpu_to_le32(0);
1864 if (st
->update_tail
) {
1865 dd
->next
= super
->add
;
1868 dd
->next
= super
->disks
;
1873 static int store_imsm_mpb(int fd
, struct intel_super
*super
);
1875 /* spare records have their own family number and do not have any defined raid
1878 static int write_super_imsm_spares(struct intel_super
*super
, int doclose
)
1880 struct imsm_super mpb_save
;
1881 struct imsm_super
*mpb
= super
->anchor
;
1886 mpb
->num_raid_devs
= 0;
1888 mpb
->mpb_size
= sizeof(struct imsm_super
);
1889 mpb
->generation_num
= __cpu_to_le32(1UL);
1891 for (d
= super
->disks
; d
; d
= d
->next
) {
1895 mpb
->disk
[0] = d
->disk
;
1896 sum
= __gen_imsm_checksum(mpb
);
1897 mpb
->family_num
= __cpu_to_le32(sum
);
1898 sum
= __gen_imsm_checksum(mpb
);
1899 mpb
->check_sum
= __cpu_to_le32(sum
);
1901 if (store_imsm_mpb(d
->fd
, super
)) {
1902 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
1903 __func__
, d
->major
, d
->minor
, strerror(errno
));
1917 static int write_super_imsm(struct intel_super
*super
, int doclose
)
1919 struct imsm_super
*mpb
= super
->anchor
;
1925 __u32 mpb_size
= sizeof(struct imsm_super
) - sizeof(struct imsm_disk
);
1927 /* 'generation' is incremented everytime the metadata is written */
1928 generation
= __le32_to_cpu(mpb
->generation_num
);
1930 mpb
->generation_num
= __cpu_to_le32(generation
);
1932 mpb_size
+= sizeof(struct imsm_disk
) * mpb
->num_disks
;
1933 for (d
= super
->disks
; d
; d
= d
->next
) {
1937 mpb
->disk
[d
->index
] = d
->disk
;
1939 for (d
= super
->missing
; d
; d
= d
->next
)
1940 mpb
->disk
[d
->index
] = d
->disk
;
1942 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1943 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1945 imsm_copy_dev(dev
, super
->dev_tbl
[i
]);
1946 mpb_size
+= sizeof_imsm_dev(dev
, 0);
1948 mpb_size
+= __le32_to_cpu(mpb
->bbm_log_size
);
1949 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
1951 /* recalculate checksum */
1952 sum
= __gen_imsm_checksum(mpb
);
1953 mpb
->check_sum
= __cpu_to_le32(sum
);
1955 /* write the mpb for disks that compose raid devices */
1956 for (d
= super
->disks
; d
; d
= d
->next
) {
1959 if (store_imsm_mpb(d
->fd
, super
))
1960 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
1961 __func__
, d
->major
, d
->minor
, strerror(errno
));
1969 return write_super_imsm_spares(super
, doclose
);
1975 static int create_array(struct supertype
*st
)
1978 struct imsm_update_create_array
*u
;
1979 struct intel_super
*super
= st
->sb
;
1980 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
1982 len
= sizeof(*u
) - sizeof(*dev
) + sizeof_imsm_dev(dev
, 0);
1985 fprintf(stderr
, "%s: failed to allocate update buffer\n",
1990 u
->type
= update_create_array
;
1991 u
->dev_idx
= super
->current_vol
;
1992 imsm_copy_dev(&u
->dev
, dev
);
1993 append_metadata_update(st
, u
, len
);
1998 static int _add_disk(struct supertype
*st
)
2000 struct intel_super
*super
= st
->sb
;
2002 struct imsm_update_add_disk
*u
;
2010 fprintf(stderr
, "%s: failed to allocate update buffer\n",
2015 u
->type
= update_add_disk
;
2016 append_metadata_update(st
, u
, len
);
2021 static int write_init_super_imsm(struct supertype
*st
)
2023 if (st
->update_tail
) {
2024 /* queue the recently created array / added disk
2025 * as a metadata update */
2026 struct intel_super
*super
= st
->sb
;
2030 /* determine if we are creating a volume or adding a disk */
2031 if (super
->current_vol
< 0) {
2032 /* in the add disk case we are running in mdmon
2033 * context, so don't close fd's
2035 return _add_disk(st
);
2037 rv
= create_array(st
);
2039 for (d
= super
->disks
; d
; d
= d
->next
) {
2046 return write_super_imsm(st
->sb
, 1);
2050 static int store_zero_imsm(struct supertype
*st
, int fd
)
2052 unsigned long long dsize
;
2055 get_dev_size(fd
, NULL
, &dsize
);
2057 /* first block is stored on second to last sector of the disk */
2058 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
2061 if (posix_memalign(&buf
, 512, 512) != 0)
2064 memset(buf
, 0, 512);
2065 if (write(fd
, buf
, 512) != 512)
2070 static int imsm_bbm_log_size(struct imsm_super
*mpb
)
2072 return __le32_to_cpu(mpb
->bbm_log_size
);
2076 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
2077 int layout
, int raiddisks
, int chunk
,
2078 unsigned long long size
, char *dev
,
2079 unsigned long long *freesize
,
2083 unsigned long long ldsize
;
2085 if (level
!= LEVEL_CONTAINER
)
2090 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
2093 fprintf(stderr
, Name
": imsm: Cannot open %s: %s\n",
2094 dev
, strerror(errno
));
2097 if (!get_dev_size(fd
, dev
, &ldsize
)) {
2103 *freesize
= avail_size_imsm(st
, ldsize
>> 9);
2108 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
2109 * FIX ME add ahci details
2111 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
2112 int layout
, int raiddisks
, int chunk
,
2113 unsigned long long size
, char *dev
,
2114 unsigned long long *freesize
,
2118 struct intel_super
*super
= st
->sb
;
2120 unsigned long long pos
= 0;
2121 unsigned long long maxsize
;
2125 if (level
== LEVEL_CONTAINER
)
2128 if (level
== 1 && raiddisks
> 2) {
2130 fprintf(stderr
, Name
": imsm does not support more "
2131 "than 2 in a raid1 configuration\n");
2135 /* We must have the container info already read in. */
2140 /* General test: make sure there is space for
2141 * 'raiddisks' device extents of size 'size' at a given
2144 unsigned long long minsize
= size
*2 /* convert to blocks */;
2145 unsigned long long start_offset
= ~0ULL;
2148 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
2149 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2154 e
= get_extents(super
, dl
);
2157 unsigned long long esize
;
2158 esize
= e
[i
].start
- pos
;
2159 if (esize
>= minsize
)
2161 if (found
&& start_offset
== ~0ULL) {
2164 } else if (found
&& pos
!= start_offset
) {
2168 pos
= e
[i
].start
+ e
[i
].size
;
2170 } while (e
[i
-1].size
);
2175 if (dcnt
< raiddisks
) {
2177 fprintf(stderr
, Name
": imsm: Not enough "
2178 "devices with space for this array "
2185 /* This device must be a member of the set */
2186 if (stat(dev
, &stb
) < 0)
2188 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
2190 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2191 if (dl
->major
== major(stb
.st_rdev
) &&
2192 dl
->minor
== minor(stb
.st_rdev
))
2197 fprintf(stderr
, Name
": %s is not in the "
2198 "same imsm set\n", dev
);
2201 e
= get_extents(super
, dl
);
2205 unsigned long long esize
;
2206 esize
= e
[i
].start
- pos
;
2207 if (esize
>= maxsize
)
2209 pos
= e
[i
].start
+ e
[i
].size
;
2211 } while (e
[i
-1].size
);
2212 *freesize
= maxsize
;
2217 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
2218 int raiddisks
, int chunk
, unsigned long long size
,
2219 char *dev
, unsigned long long *freesize
,
2225 /* if given unused devices create a container
2226 * if given given devices in a container create a member volume
2228 if (level
== LEVEL_CONTAINER
) {
2229 /* Must be a fresh device to add to a container */
2230 return validate_geometry_imsm_container(st
, level
, layout
,
2231 raiddisks
, chunk
, size
,
2237 /* creating in a given container */
2238 return validate_geometry_imsm_volume(st
, level
, layout
,
2239 raiddisks
, chunk
, size
,
2240 dev
, freesize
, verbose
);
2243 /* limit creation to the following levels */
2255 /* This device needs to be a device in an 'imsm' container */
2256 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
2260 Name
": Cannot create this array on device %s\n",
2265 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
2267 fprintf(stderr
, Name
": Cannot open %s: %s\n",
2268 dev
, strerror(errno
));
2271 /* Well, it is in use by someone, maybe an 'imsm' container. */
2272 cfd
= open_container(fd
);
2276 fprintf(stderr
, Name
": Cannot use %s: It is busy\n",
2280 sra
= sysfs_read(cfd
, 0, GET_VERSION
);
2282 if (sra
&& sra
->array
.major_version
== -1 &&
2283 strcmp(sra
->text_version
, "imsm") == 0) {
2284 /* This is a member of a imsm container. Load the container
2285 * and try to create a volume
2287 struct intel_super
*super
;
2289 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
, 1) == 0) {
2291 st
->container_dev
= fd2devnum(cfd
);
2293 return validate_geometry_imsm_volume(st
, level
, layout
,
2299 } else /* may belong to another container */
2304 #endif /* MDASSEMBLE */
2306 static struct mdinfo
*container_content_imsm(struct supertype
*st
)
2308 /* Given a container loaded by load_super_imsm_all,
2309 * extract information about all the arrays into
2312 * For each imsm_dev create an mdinfo, fill it in,
2313 * then look for matching devices in super->disks
2314 * and create appropriate device mdinfo.
2316 struct intel_super
*super
= st
->sb
;
2317 struct imsm_super
*mpb
= super
->anchor
;
2318 struct mdinfo
*rest
= NULL
;
2321 /* do not assemble arrays that might have bad blocks */
2322 if (imsm_bbm_log_size(super
->anchor
)) {
2323 fprintf(stderr
, Name
": BBM log found in metadata. "
2324 "Cannot activate array(s).\n");
2328 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
2329 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
2330 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2331 struct mdinfo
*this;
2334 this = malloc(sizeof(*this));
2335 memset(this, 0, sizeof(*this));
2338 super
->current_vol
= i
;
2339 getinfo_super_imsm_volume(st
, this);
2340 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
2341 struct mdinfo
*info_d
;
2349 idx
= get_imsm_disk_idx(dev
, slot
);
2350 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
2351 for (d
= super
->disks
; d
; d
= d
->next
)
2352 if (d
->index
== idx
)
2358 s
= d
? __le32_to_cpu(d
->disk
.status
) : 0;
2359 if (s
& FAILED_DISK
)
2361 if (!(s
& USABLE_DISK
))
2363 if (ord
& IMSM_ORD_REBUILD
)
2367 * if we skip some disks the array will be assmebled degraded;
2368 * reset resync start to avoid a dirty-degraded situation
2370 * FIXME handle dirty degraded
2372 if (skip
&& !dev
->vol
.dirty
)
2373 this->resync_start
= ~0ULL;
2377 info_d
= malloc(sizeof(*info_d
));
2379 fprintf(stderr
, Name
": failed to allocate disk"
2380 " for volume %s\n", (char *) dev
->volume
);
2385 memset(info_d
, 0, sizeof(*info_d
));
2386 info_d
->next
= this->devs
;
2387 this->devs
= info_d
;
2389 info_d
->disk
.number
= d
->index
;
2390 info_d
->disk
.major
= d
->major
;
2391 info_d
->disk
.minor
= d
->minor
;
2392 info_d
->disk
.raid_disk
= slot
;
2394 this->array
.working_disks
++;
2396 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
2397 info_d
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
2398 info_d
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
2400 strcpy(info_d
->name
, d
->devname
);
2410 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
2413 struct intel_super
*super
= c
->sb
;
2414 struct imsm_super
*mpb
= super
->anchor
;
2416 if (atoi(inst
) >= mpb
->num_raid_devs
) {
2417 fprintf(stderr
, "%s: subarry index %d, out of range\n",
2418 __func__
, atoi(inst
));
2422 dprintf("imsm: open_new %s\n", inst
);
2423 a
->info
.container_member
= atoi(inst
);
2427 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
, int failed
)
2429 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2432 return map
->map_state
== IMSM_T_STATE_UNINITIALIZED
?
2433 IMSM_T_STATE_UNINITIALIZED
: IMSM_T_STATE_NORMAL
;
2435 switch (get_imsm_raid_level(map
)) {
2437 return IMSM_T_STATE_FAILED
;
2440 if (failed
< map
->num_members
)
2441 return IMSM_T_STATE_DEGRADED
;
2443 return IMSM_T_STATE_FAILED
;
2448 * check to see if any mirrors have failed, otherwise we
2449 * are degraded. Even numbered slots are mirrored on
2455 for (i
= 0; i
< map
->num_members
; i
++) {
2456 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
);
2457 int idx
= ord_to_idx(ord
);
2458 struct imsm_disk
*disk
;
2460 /* reset the potential in-sync count on even-numbered
2461 * slots. num_copies is always 2 for imsm raid10
2466 disk
= get_imsm_disk(super
, idx
);
2468 __le32_to_cpu(disk
->status
) & FAILED_DISK
||
2469 ord
& IMSM_ORD_REBUILD
)
2472 /* no in-sync disks left in this mirror the
2476 return IMSM_T_STATE_FAILED
;
2479 return IMSM_T_STATE_DEGRADED
;
2483 return IMSM_T_STATE_DEGRADED
;
2485 return IMSM_T_STATE_FAILED
;
2491 return map
->map_state
;
2494 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
)
2498 struct imsm_disk
*disk
;
2499 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2501 for (i
= 0; i
< map
->num_members
; i
++) {
2502 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
);
2503 int idx
= ord_to_idx(ord
);
2505 disk
= get_imsm_disk(super
, idx
);
2507 __le32_to_cpu(disk
->status
) & FAILED_DISK
||
2508 ord
& IMSM_ORD_REBUILD
)
2515 static int is_resyncing(struct imsm_dev
*dev
)
2517 struct imsm_map
*migr_map
;
2519 if (!dev
->vol
.migr_state
)
2522 if (dev
->vol
.migr_type
== 0)
2525 migr_map
= get_imsm_map(dev
, 1);
2527 if (migr_map
->map_state
== IMSM_T_STATE_NORMAL
)
2533 static int is_rebuilding(struct imsm_dev
*dev
)
2535 struct imsm_map
*migr_map
;
2537 if (!dev
->vol
.migr_state
)
2540 if (dev
->vol
.migr_type
== 0)
2543 migr_map
= get_imsm_map(dev
, 1);
2545 if (migr_map
->map_state
== IMSM_T_STATE_DEGRADED
)
2551 static void mark_failure(struct imsm_disk
*disk
)
2553 __u32 status
= __le32_to_cpu(disk
->status
);
2555 if (status
& FAILED_DISK
)
2557 status
|= FAILED_DISK
;
2558 disk
->status
= __cpu_to_le32(status
);
2559 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
2560 memmove(&disk
->serial
[0], &disk
->serial
[1], MAX_RAID_SERIAL_LEN
- 1);
2563 /* Handle dirty -> clean transititions and resync. Degraded and rebuild
2564 * states are handled in imsm_set_disk() with one exception, when a
2565 * resync is stopped due to a new failure this routine will set the
2566 * 'degraded' state for the array.
2568 static int imsm_set_array_state(struct active_array
*a
, int consistent
)
2570 int inst
= a
->info
.container_member
;
2571 struct intel_super
*super
= a
->container
->sb
;
2572 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
2573 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2574 int failed
= imsm_count_failed(super
, dev
);
2575 __u8 map_state
= imsm_check_degraded(super
, dev
, failed
);
2577 /* before we activate this array handle any missing disks */
2578 if (consistent
== 2 && super
->missing
) {
2581 dprintf("imsm: mark missing\n");
2582 end_migration(dev
, map_state
);
2583 for (dl
= super
->missing
; dl
; dl
= dl
->next
)
2584 mark_failure(&dl
->disk
);
2585 super
->updates_pending
++;
2588 if (consistent
== 2 &&
2589 (!is_resync_complete(a
) ||
2590 map_state
!= IMSM_T_STATE_NORMAL
||
2591 dev
->vol
.migr_state
))
2594 if (is_resync_complete(a
)) {
2595 /* complete intialization / resync,
2596 * recovery is completed in ->set_disk
2598 if (is_resyncing(dev
)) {
2599 dprintf("imsm: mark resync done\n");
2600 end_migration(dev
, map_state
);
2601 super
->updates_pending
++;
2603 } else if (!is_resyncing(dev
) && !failed
) {
2604 /* mark the start of the init process if nothing is failed */
2605 dprintf("imsm: mark resync start (%llu)\n", a
->resync_start
);
2606 map
->map_state
= map_state
;
2607 migrate(dev
, IMSM_T_STATE_NORMAL
,
2608 map
->map_state
== IMSM_T_STATE_NORMAL
);
2609 super
->updates_pending
++;
2612 /* check if we can update the migration checkpoint */
2613 if (dev
->vol
.migr_state
&&
2614 __le32_to_cpu(dev
->vol
.curr_migr_unit
) != a
->resync_start
) {
2615 dprintf("imsm: checkpoint migration (%llu)\n", a
->resync_start
);
2616 dev
->vol
.curr_migr_unit
= __cpu_to_le32(a
->resync_start
);
2617 super
->updates_pending
++;
2620 /* mark dirty / clean */
2621 if (dev
->vol
.dirty
!= !consistent
) {
2622 dprintf("imsm: mark '%s' (%llu)\n",
2623 consistent
? "clean" : "dirty", a
->resync_start
);
2628 super
->updates_pending
++;
2633 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
2635 int inst
= a
->info
.container_member
;
2636 struct intel_super
*super
= a
->container
->sb
;
2637 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
2638 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2639 struct imsm_disk
*disk
;
2645 if (n
> map
->num_members
)
2646 fprintf(stderr
, "imsm: set_disk %d out of range 0..%d\n",
2647 n
, map
->num_members
- 1);
2652 dprintf("imsm: set_disk %d:%x\n", n
, state
);
2654 ord
= get_imsm_ord_tbl_ent(dev
, n
);
2655 disk
= get_imsm_disk(super
, ord_to_idx(ord
));
2657 /* check for new failures */
2658 status
= __le32_to_cpu(disk
->status
);
2659 if ((state
& DS_FAULTY
) && !(status
& FAILED_DISK
)) {
2661 super
->updates_pending
++;
2664 /* check if in_sync */
2665 if (state
& DS_INSYNC
&& ord
& IMSM_ORD_REBUILD
) {
2666 struct imsm_map
*migr_map
= get_imsm_map(dev
, 1);
2668 set_imsm_ord_tbl_ent(migr_map
, n
, ord_to_idx(ord
));
2669 super
->updates_pending
++;
2672 failed
= imsm_count_failed(super
, dev
);
2673 map_state
= imsm_check_degraded(super
, dev
, failed
);
2675 /* check if recovery complete, newly degraded, or failed */
2676 if (map_state
== IMSM_T_STATE_NORMAL
&& is_rebuilding(dev
)) {
2677 end_migration(dev
, map_state
);
2678 super
->updates_pending
++;
2679 } else if (map_state
== IMSM_T_STATE_DEGRADED
&&
2680 map
->map_state
!= map_state
&&
2681 !dev
->vol
.migr_state
) {
2682 dprintf("imsm: mark degraded\n");
2683 map
->map_state
= map_state
;
2684 super
->updates_pending
++;
2685 } else if (map_state
== IMSM_T_STATE_FAILED
&&
2686 map
->map_state
!= map_state
) {
2687 dprintf("imsm: mark failed\n");
2688 end_migration(dev
, map_state
);
2689 super
->updates_pending
++;
2693 static int store_imsm_mpb(int fd
, struct intel_super
*super
)
2695 struct imsm_super
*mpb
= super
->anchor
;
2696 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
2697 unsigned long long dsize
;
2698 unsigned long long sectors
;
2700 get_dev_size(fd
, NULL
, &dsize
);
2702 if (mpb_size
> 512) {
2703 /* -1 to account for anchor */
2704 sectors
= mpb_sectors(mpb
) - 1;
2706 /* write the extended mpb to the sectors preceeding the anchor */
2707 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0)
2710 if (write(fd
, super
->buf
+ 512, 512 * sectors
) != 512 * sectors
)
2714 /* first block is stored on second to last sector of the disk */
2715 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
2718 if (write(fd
, super
->buf
, 512) != 512)
2724 static void imsm_sync_metadata(struct supertype
*container
)
2726 struct intel_super
*super
= container
->sb
;
2728 if (!super
->updates_pending
)
2731 write_super_imsm(super
, 0);
2733 super
->updates_pending
= 0;
2736 static struct dl
*imsm_readd(struct intel_super
*super
, int idx
, struct active_array
*a
)
2738 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
2739 int i
= get_imsm_disk_idx(dev
, idx
);
2742 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
2746 if (dl
&& __le32_to_cpu(dl
->disk
.status
) & FAILED_DISK
)
2750 dprintf("%s: found %x:%x\n", __func__
, dl
->major
, dl
->minor
);
2755 static struct dl
*imsm_add_spare(struct intel_super
*super
, int slot
, struct active_array
*a
)
2757 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
2758 int idx
= get_imsm_disk_idx(dev
, slot
);
2759 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2760 unsigned long long esize
;
2761 unsigned long long pos
;
2770 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2771 /* If in this array, skip */
2772 for (d
= a
->info
.devs
; d
; d
= d
->next
)
2773 if (d
->state_fd
>= 0 &&
2774 d
->disk
.major
== dl
->major
&&
2775 d
->disk
.minor
== dl
->minor
) {
2776 dprintf("%x:%x already in array\n", dl
->major
, dl
->minor
);
2782 /* skip in use or failed drives */
2783 status
= __le32_to_cpu(dl
->disk
.status
);
2784 if (status
& FAILED_DISK
|| idx
== dl
->index
) {
2785 dprintf("%x:%x status ( %s%s)\n",
2786 dl
->major
, dl
->minor
,
2787 status
& FAILED_DISK
? "failed " : "",
2788 idx
== dl
->index
? "in use " : "");
2792 /* Does this unused device have the requisite free space?
2793 * We need a->info.component_size sectors
2795 ex
= get_extents(super
, dl
);
2797 dprintf("cannot get extents\n");
2803 array_start
= __le32_to_cpu(map
->pba_of_lba0
);
2806 /* check that we can start at pba_of_lba0 with
2807 * a->info.component_size of space
2809 esize
= ex
[j
].start
- pos
;
2810 if (array_start
>= pos
&&
2811 array_start
+ a
->info
.component_size
< ex
[j
].start
) {
2815 pos
= ex
[j
].start
+ ex
[j
].size
;
2818 } while (ex
[j
-1].size
);
2822 dprintf("%x:%x does not have %llu at %d\n",
2823 dl
->major
, dl
->minor
,
2824 a
->info
.component_size
,
2825 __le32_to_cpu(map
->pba_of_lba0
));
2835 static struct mdinfo
*imsm_activate_spare(struct active_array
*a
,
2836 struct metadata_update
**updates
)
2839 * Find a device with unused free space and use it to replace a
2840 * failed/vacant region in an array. We replace failed regions one a
2841 * array at a time. The result is that a new spare disk will be added
2842 * to the first failed array and after the monitor has finished
2843 * propagating failures the remainder will be consumed.
2845 * FIXME add a capability for mdmon to request spares from another
2849 struct intel_super
*super
= a
->container
->sb
;
2850 int inst
= a
->info
.container_member
;
2851 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
2852 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2853 int failed
= a
->info
.array
.raid_disks
;
2854 struct mdinfo
*rv
= NULL
;
2857 struct metadata_update
*mu
;
2859 struct imsm_update_activate_spare
*u
;
2863 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
2864 if ((d
->curr_state
& DS_FAULTY
) &&
2866 /* wait for Removal to happen */
2868 if (d
->state_fd
>= 0)
2872 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
2873 inst
, failed
, a
->info
.array
.raid_disks
, a
->info
.array
.level
);
2874 if (imsm_check_degraded(super
, dev
, failed
) != IMSM_T_STATE_DEGRADED
)
2877 /* For each slot, if it is not working, find a spare */
2878 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
2879 for (d
= a
->info
.devs
; d
; d
= d
->next
)
2880 if (d
->disk
.raid_disk
== i
)
2882 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
2883 if (d
&& (d
->state_fd
>= 0))
2887 * OK, this device needs recovery. Try to re-add the previous
2888 * occupant of this slot, if this fails add a new spare
2890 dl
= imsm_readd(super
, i
, a
);
2892 dl
= imsm_add_spare(super
, i
, a
);
2896 /* found a usable disk with enough space */
2897 di
= malloc(sizeof(*di
));
2900 memset(di
, 0, sizeof(*di
));
2902 /* dl->index will be -1 in the case we are activating a
2903 * pristine spare. imsm_process_update() will create a
2904 * new index in this case. Once a disk is found to be
2905 * failed in all member arrays it is kicked from the
2908 di
->disk
.number
= dl
->index
;
2910 /* (ab)use di->devs to store a pointer to the device
2913 di
->devs
= (struct mdinfo
*) dl
;
2915 di
->disk
.raid_disk
= i
;
2916 di
->disk
.major
= dl
->major
;
2917 di
->disk
.minor
= dl
->minor
;
2919 di
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
2920 di
->component_size
= a
->info
.component_size
;
2921 di
->container_member
= inst
;
2925 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
2926 i
, di
->data_offset
);
2932 /* No spares found */
2934 /* Now 'rv' has a list of devices to return.
2935 * Create a metadata_update record to update the
2936 * disk_ord_tbl for the array
2938 mu
= malloc(sizeof(*mu
));
2940 mu
->buf
= malloc(sizeof(struct imsm_update_activate_spare
) * num_spares
);
2941 if (mu
->buf
== NULL
) {
2948 struct mdinfo
*n
= rv
->next
;
2957 mu
->len
= sizeof(struct imsm_update_activate_spare
) * num_spares
;
2958 mu
->next
= *updates
;
2959 u
= (struct imsm_update_activate_spare
*) mu
->buf
;
2961 for (di
= rv
; di
; di
= di
->next
) {
2962 u
->type
= update_activate_spare
;
2963 u
->dl
= (struct dl
*) di
->devs
;
2965 u
->slot
= di
->disk
.raid_disk
;
2976 static int disks_overlap(struct imsm_dev
*d1
, struct imsm_dev
*d2
)
2978 struct imsm_map
*m1
= get_imsm_map(d1
, 0);
2979 struct imsm_map
*m2
= get_imsm_map(d2
, 0);
2984 for (i
= 0; i
< m1
->num_members
; i
++) {
2985 idx
= get_imsm_disk_idx(d1
, i
);
2986 for (j
= 0; j
< m2
->num_members
; j
++)
2987 if (idx
== get_imsm_disk_idx(d2
, j
))
2994 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, int index
);
2996 static void imsm_process_update(struct supertype
*st
,
2997 struct metadata_update
*update
)
3000 * crack open the metadata_update envelope to find the update record
3001 * update can be one of:
3002 * update_activate_spare - a spare device has replaced a failed
3003 * device in an array, update the disk_ord_tbl. If this disk is
3004 * present in all member arrays then also clear the SPARE_DISK
3007 struct intel_super
*super
= st
->sb
;
3008 struct imsm_super
*mpb
;
3009 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
3011 /* update requires a larger buf but the allocation failed */
3012 if (super
->next_len
&& !super
->next_buf
) {
3013 super
->next_len
= 0;
3017 if (super
->next_buf
) {
3018 memcpy(super
->next_buf
, super
->buf
, super
->len
);
3020 super
->len
= super
->next_len
;
3021 super
->buf
= super
->next_buf
;
3023 super
->next_len
= 0;
3024 super
->next_buf
= NULL
;
3027 mpb
= super
->anchor
;
3030 case update_activate_spare
: {
3031 struct imsm_update_activate_spare
*u
= (void *) update
->buf
;
3032 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->array
);
3033 struct imsm_map
*map
= get_imsm_map(dev
, 0);
3034 struct imsm_map
*migr_map
;
3035 struct active_array
*a
;
3036 struct imsm_disk
*disk
;
3042 int victim
= get_imsm_disk_idx(dev
, u
->slot
);
3045 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
3050 fprintf(stderr
, "error: imsm_activate_spare passed "
3051 "an unknown disk (index: %d)\n",
3056 super
->updates_pending
++;
3058 /* count failures (excluding rebuilds and the victim)
3059 * to determine map[0] state
3062 for (i
= 0; i
< map
->num_members
; i
++) {
3065 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
));
3067 __le32_to_cpu(disk
->status
) & FAILED_DISK
)
3071 /* adding a pristine spare, assign a new index */
3072 if (dl
->index
< 0) {
3073 dl
->index
= super
->anchor
->num_disks
;
3074 super
->anchor
->num_disks
++;
3077 status
= __le32_to_cpu(disk
->status
);
3078 status
|= CONFIGURED_DISK
;
3079 status
&= ~SPARE_DISK
;
3080 disk
->status
= __cpu_to_le32(status
);
3083 to_state
= imsm_check_degraded(super
, dev
, failed
);
3084 map
->map_state
= IMSM_T_STATE_DEGRADED
;
3085 migrate(dev
, to_state
, 1);
3086 migr_map
= get_imsm_map(dev
, 1);
3087 set_imsm_ord_tbl_ent(map
, u
->slot
, dl
->index
);
3088 set_imsm_ord_tbl_ent(migr_map
, u
->slot
, dl
->index
| IMSM_ORD_REBUILD
);
3090 /* count arrays using the victim in the metadata */
3092 for (a
= st
->arrays
; a
; a
= a
->next
) {
3093 dev
= get_imsm_dev(super
, a
->info
.container_member
);
3094 for (i
= 0; i
< map
->num_members
; i
++)
3095 if (victim
== get_imsm_disk_idx(dev
, i
))
3099 /* delete the victim if it is no longer being
3105 /* We know that 'manager' isn't touching anything,
3106 * so it is safe to delete
3108 for (dlp
= &super
->disks
; *dlp
; dlp
= &(*dlp
)->next
)
3109 if ((*dlp
)->index
== victim
)
3112 /* victim may be on the missing list */
3114 for (dlp
= &super
->missing
; *dlp
; dlp
= &(*dlp
)->next
)
3115 if ((*dlp
)->index
== victim
)
3117 imsm_delete(super
, dlp
, victim
);
3121 case update_create_array
: {
3122 /* someone wants to create a new array, we need to be aware of
3123 * a few races/collisions:
3124 * 1/ 'Create' called by two separate instances of mdadm
3125 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
3126 * devices that have since been assimilated via
3128 * In the event this update can not be carried out mdadm will
3129 * (FIX ME) notice that its update did not take hold.
3131 struct imsm_update_create_array
*u
= (void *) update
->buf
;
3132 struct imsm_dev
*dev
;
3133 struct imsm_map
*map
, *new_map
;
3134 unsigned long long start
, end
;
3135 unsigned long long new_start
, new_end
;
3139 /* handle racing creates: first come first serve */
3140 if (u
->dev_idx
< mpb
->num_raid_devs
) {
3141 dprintf("%s: subarray %d already defined\n",
3142 __func__
, u
->dev_idx
);
3146 /* check update is next in sequence */
3147 if (u
->dev_idx
!= mpb
->num_raid_devs
) {
3148 dprintf("%s: can not create array %d expected index %d\n",
3149 __func__
, u
->dev_idx
, mpb
->num_raid_devs
);
3153 new_map
= get_imsm_map(&u
->dev
, 0);
3154 new_start
= __le32_to_cpu(new_map
->pba_of_lba0
);
3155 new_end
= new_start
+ __le32_to_cpu(new_map
->blocks_per_member
);
3157 /* handle activate_spare versus create race:
3158 * check to make sure that overlapping arrays do not include
3161 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
3162 dev
= get_imsm_dev(super
, i
);
3163 map
= get_imsm_map(dev
, 0);
3164 start
= __le32_to_cpu(map
->pba_of_lba0
);
3165 end
= start
+ __le32_to_cpu(map
->blocks_per_member
);
3166 if ((new_start
>= start
&& new_start
<= end
) ||
3167 (start
>= new_start
&& start
<= new_end
))
3169 if (overlap
&& disks_overlap(dev
, &u
->dev
)) {
3170 dprintf("%s: arrays overlap\n", __func__
);
3174 /* check num_members sanity */
3175 if (new_map
->num_members
> mpb
->num_disks
) {
3176 dprintf("%s: num_disks out of range\n", __func__
);
3180 /* check that prepare update was successful */
3181 if (!update
->space
) {
3182 dprintf("%s: prepare update failed\n", __func__
);
3186 super
->updates_pending
++;
3187 dev
= update
->space
;
3188 map
= get_imsm_map(dev
, 0);
3189 update
->space
= NULL
;
3190 imsm_copy_dev(dev
, &u
->dev
);
3191 map
= get_imsm_map(dev
, 0);
3192 super
->dev_tbl
[u
->dev_idx
] = dev
;
3193 mpb
->num_raid_devs
++;
3196 for (i
= 0; i
< map
->num_members
; i
++) {
3197 struct imsm_disk
*disk
;
3200 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
));
3201 status
= __le32_to_cpu(disk
->status
);
3202 status
|= CONFIGURED_DISK
;
3203 status
&= ~SPARE_DISK
;
3204 disk
->status
= __cpu_to_le32(status
);
3208 case update_add_disk
:
3210 /* we may be able to repair some arrays if disks are
3213 struct active_array
*a
;
3215 super
->updates_pending
++;
3216 for (a
= st
->arrays
; a
; a
= a
->next
)
3217 a
->check_degraded
= 1;
3219 /* add some spares to the metadata */
3220 while (super
->add
) {
3224 super
->add
= al
->next
;
3225 al
->next
= super
->disks
;
3227 dprintf("%s: added %x:%x\n",
3228 __func__
, al
->major
, al
->minor
);
3235 static void imsm_prepare_update(struct supertype
*st
,
3236 struct metadata_update
*update
)
3239 * Allocate space to hold new disk entries, raid-device entries or a new
3240 * mpb if necessary. The manager synchronously waits for updates to
3241 * complete in the monitor, so new mpb buffers allocated here can be
3242 * integrated by the monitor thread without worrying about live pointers
3243 * in the manager thread.
3245 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
3246 struct intel_super
*super
= st
->sb
;
3247 struct imsm_super
*mpb
= super
->anchor
;
3252 case update_create_array
: {
3253 struct imsm_update_create_array
*u
= (void *) update
->buf
;
3255 len
= sizeof_imsm_dev(&u
->dev
, 1);
3256 update
->space
= malloc(len
);
3263 /* check if we need a larger metadata buffer */
3264 if (super
->next_buf
)
3265 buf_len
= super
->next_len
;
3267 buf_len
= super
->len
;
3269 if (__le32_to_cpu(mpb
->mpb_size
) + len
> buf_len
) {
3270 /* ok we need a larger buf than what is currently allocated
3271 * if this allocation fails process_update will notice that
3272 * ->next_len is set and ->next_buf is NULL
3274 buf_len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + len
, 512);
3275 if (super
->next_buf
)
3276 free(super
->next_buf
);
3278 super
->next_len
= buf_len
;
3279 if (posix_memalign(&super
->next_buf
, buf_len
, 512) != 0)
3280 super
->next_buf
= NULL
;
3284 /* must be called while manager is quiesced */
3285 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, int index
)
3287 struct imsm_super
*mpb
= super
->anchor
;
3289 struct imsm_dev
*dev
;
3290 struct imsm_map
*map
;
3291 int i
, j
, num_members
;
3294 dprintf("%s: deleting device[%d] from imsm_super\n",
3297 /* shift all indexes down one */
3298 for (iter
= super
->disks
; iter
; iter
= iter
->next
)
3299 if (iter
->index
> index
)
3301 for (iter
= super
->missing
; iter
; iter
= iter
->next
)
3302 if (iter
->index
> index
)
3305 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
3306 dev
= get_imsm_dev(super
, i
);
3307 map
= get_imsm_map(dev
, 0);
3308 num_members
= map
->num_members
;
3309 for (j
= 0; j
< num_members
; j
++) {
3310 /* update ord entries being careful not to propagate
3311 * ord-flags to the first map
3313 ord
= get_imsm_ord_tbl_ent(dev
, j
);
3315 if (ord_to_idx(ord
) <= index
)
3318 map
= get_imsm_map(dev
, 0);
3319 set_imsm_ord_tbl_ent(map
, j
, ord_to_idx(ord
- 1));
3320 map
= get_imsm_map(dev
, 1);
3322 set_imsm_ord_tbl_ent(map
, j
, ord
- 1);
3327 super
->updates_pending
++;
3329 struct dl
*dl
= *dlp
;
3331 *dlp
= (*dlp
)->next
;
3332 __free_imsm_disk(dl
);
3335 #endif /* MDASSEMBLE */
3337 struct superswitch super_imsm
= {
3339 .examine_super
= examine_super_imsm
,
3340 .brief_examine_super
= brief_examine_super_imsm
,
3341 .detail_super
= detail_super_imsm
,
3342 .brief_detail_super
= brief_detail_super_imsm
,
3343 .write_init_super
= write_init_super_imsm
,
3344 .validate_geometry
= validate_geometry_imsm
,
3345 .add_to_super
= add_to_super_imsm
,
3347 .match_home
= match_home_imsm
,
3348 .uuid_from_super
= uuid_from_super_imsm
,
3349 .getinfo_super
= getinfo_super_imsm
,
3350 .update_super
= update_super_imsm
,
3352 .avail_size
= avail_size_imsm
,
3354 .compare_super
= compare_super_imsm
,
3356 .load_super
= load_super_imsm
,
3357 .init_super
= init_super_imsm
,
3358 .store_super
= store_zero_imsm
,
3359 .free_super
= free_super_imsm
,
3360 .match_metadata_desc
= match_metadata_desc_imsm
,
3361 .container_content
= container_content_imsm
,
3367 .open_new
= imsm_open_new
,
3368 .load_super
= load_super_imsm
,
3369 .set_array_state
= imsm_set_array_state
,
3370 .set_disk
= imsm_set_disk
,
3371 .sync_metadata
= imsm_sync_metadata
,
3372 .activate_spare
= imsm_activate_spare
,
3373 .process_update
= imsm_process_update
,
3374 .prepare_update
= imsm_prepare_update
,
3375 #endif /* MDASSEMBLE */