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 struct supertype
*match_metadata_desc_imsm(char *arg
)
218 struct supertype
*st
;
220 if (strcmp(arg
, "imsm") != 0 &&
221 strcmp(arg
, "default") != 0
225 st
= malloc(sizeof(*st
));
226 memset(st
, 0, sizeof(*st
));
227 st
->ss
= &super_imsm
;
228 st
->max_devs
= IMSM_MAX_DEVICES
;
229 st
->minor_version
= 0;
235 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
237 return &mpb
->sig
[MPB_SIG_LEN
];
241 /* retrieve a disk directly from the anchor when the anchor is known to be
242 * up-to-date, currently only at load time
244 static struct imsm_disk
*__get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
246 if (index
>= mpb
->num_disks
)
248 return &mpb
->disk
[index
];
252 /* retrieve a disk from the parsed metadata */
253 static struct imsm_disk
*get_imsm_disk(struct intel_super
*super
, __u8 index
)
257 for (d
= super
->disks
; d
; d
= d
->next
)
258 if (d
->index
== index
)
265 /* generate a checksum directly from the anchor when the anchor is known to be
266 * up-to-date, currently only at load or write_super after coalescing
268 static __u32
__gen_imsm_checksum(struct imsm_super
*mpb
)
270 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
271 __u32
*p
= (__u32
*) mpb
;
275 sum
+= __le32_to_cpu(*p
++);
277 return sum
- __le32_to_cpu(mpb
->check_sum
);
280 static size_t sizeof_imsm_map(struct imsm_map
*map
)
282 return sizeof(struct imsm_map
) + sizeof(__u32
) * (map
->num_members
- 1);
285 struct imsm_map
*get_imsm_map(struct imsm_dev
*dev
, int second_map
)
287 struct imsm_map
*map
= &dev
->vol
.map
[0];
289 if (second_map
&& !dev
->vol
.migr_state
)
291 else if (second_map
) {
294 return ptr
+ sizeof_imsm_map(map
);
300 /* return the size of the device.
301 * migr_state increases the returned size if map[0] were to be duplicated
303 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
, int migr_state
)
305 size_t size
= sizeof(*dev
) - sizeof(struct imsm_map
) +
306 sizeof_imsm_map(get_imsm_map(dev
, 0));
308 /* migrating means an additional map */
309 if (dev
->vol
.migr_state
)
310 size
+= sizeof_imsm_map(get_imsm_map(dev
, 1));
312 size
+= sizeof_imsm_map(get_imsm_map(dev
, 0));
317 static struct imsm_dev
*__get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
323 if (index
>= mpb
->num_raid_devs
)
326 /* devices start after all disks */
327 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
329 for (i
= 0; i
<= index
; i
++)
331 return _mpb
+ offset
;
333 offset
+= sizeof_imsm_dev(_mpb
+ offset
, 0);
338 static struct imsm_dev
*get_imsm_dev(struct intel_super
*super
, __u8 index
)
340 if (index
>= super
->anchor
->num_raid_devs
)
342 return super
->dev_tbl
[index
];
345 static __u32
get_imsm_ord_tbl_ent(struct imsm_dev
*dev
, int slot
)
347 struct imsm_map
*map
;
349 if (dev
->vol
.migr_state
)
350 map
= get_imsm_map(dev
, 1);
352 map
= get_imsm_map(dev
, 0);
354 /* top byte identifies disk under rebuild */
355 return __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
358 #define ord_to_idx(ord) (((ord) << 8) >> 8)
359 static __u32
get_imsm_disk_idx(struct imsm_dev
*dev
, int slot
)
361 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
363 return ord_to_idx(ord
);
366 static void set_imsm_ord_tbl_ent(struct imsm_map
*map
, int slot
, __u32 ord
)
368 map
->disk_ord_tbl
[slot
] = __cpu_to_le32(ord
);
371 static int get_imsm_raid_level(struct imsm_map
*map
)
373 if (map
->raid_level
== 1) {
374 if (map
->num_members
== 2)
380 return map
->raid_level
;
383 static int cmp_extent(const void *av
, const void *bv
)
385 const struct extent
*a
= av
;
386 const struct extent
*b
= bv
;
387 if (a
->start
< b
->start
)
389 if (a
->start
> b
->start
)
394 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
396 /* find a list of used extents on the given physical device */
397 struct extent
*rv
, *e
;
400 __u32 reservation
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
402 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
403 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
404 struct imsm_map
*map
= get_imsm_map(dev
, 0);
406 for (j
= 0; j
< map
->num_members
; j
++) {
407 __u32 index
= get_imsm_disk_idx(dev
, j
);
409 if (index
== dl
->index
)
413 rv
= malloc(sizeof(struct extent
) * (memberships
+ 1));
418 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
419 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
420 struct imsm_map
*map
= get_imsm_map(dev
, 0);
422 for (j
= 0; j
< map
->num_members
; j
++) {
423 __u32 index
= get_imsm_disk_idx(dev
, j
);
425 if (index
== dl
->index
) {
426 e
->start
= __le32_to_cpu(map
->pba_of_lba0
);
427 e
->size
= __le32_to_cpu(map
->blocks_per_member
);
432 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
434 /* determine the start of the metadata
435 * when no raid devices are defined use the default
436 * ...otherwise allow the metadata to truncate the value
437 * as is the case with older versions of imsm
440 struct extent
*last
= &rv
[memberships
- 1];
443 remainder
= __le32_to_cpu(dl
->disk
.total_blocks
) -
444 (last
->start
+ last
->size
);
445 if (reservation
> remainder
)
446 reservation
= remainder
;
448 e
->start
= __le32_to_cpu(dl
->disk
.total_blocks
) - reservation
;
453 /* try to determine how much space is reserved for metadata from
454 * the last get_extents() entry, otherwise fallback to the
457 static __u32
imsm_reserved_sectors(struct intel_super
*super
, struct dl
*dl
)
463 /* for spares just return a minimal reservation which will grow
464 * once the spare is picked up by an array
467 return MPB_SECTOR_CNT
;
469 e
= get_extents(super
, dl
);
471 return MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
473 /* scroll to last entry */
474 for (i
= 0; e
[i
].size
; i
++)
477 rv
= __le32_to_cpu(dl
->disk
.total_blocks
) - e
[i
].start
;
485 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
);
487 static void print_imsm_dev(struct imsm_dev
*dev
, int index
)
491 struct imsm_map
*map
= get_imsm_map(dev
, 0);
495 printf("[%.16s]:\n", dev
->volume
);
496 printf(" RAID Level : %d\n", get_imsm_raid_level(map
));
497 printf(" Members : %d\n", map
->num_members
);
498 for (slot
= 0; slot
< map
->num_members
; slot
++)
499 if (index
== get_imsm_disk_idx(dev
, slot
))
501 if (slot
< map
->num_members
) {
502 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
503 printf(" This Slot : %d%s\n", slot
,
504 ord
& IMSM_ORD_REBUILD
? " (out-of-sync)" : "");
506 printf(" This Slot : ?\n");
507 sz
= __le32_to_cpu(dev
->size_high
);
509 sz
+= __le32_to_cpu(dev
->size_low
);
510 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
511 human_size(sz
* 512));
512 sz
= __le32_to_cpu(map
->blocks_per_member
);
513 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
514 human_size(sz
* 512));
515 printf(" Sector Offset : %u\n",
516 __le32_to_cpu(map
->pba_of_lba0
));
517 printf(" Num Stripes : %u\n",
518 __le32_to_cpu(map
->num_data_stripes
));
519 printf(" Chunk Size : %u KiB\n",
520 __le16_to_cpu(map
->blocks_per_strip
) / 2);
521 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
522 printf(" Migrate State : %s", dev
->vol
.migr_state
? "migrating" : "idle");
523 if (dev
->vol
.migr_state
)
524 printf(": %s", dev
->vol
.migr_type
? "rebuilding" : "initializing");
526 printf(" Map State : %s", map_state_str
[map
->map_state
]);
527 if (dev
->vol
.migr_state
) {
528 struct imsm_map
*map
= get_imsm_map(dev
, 1);
529 printf(" <-- %s", map_state_str
[map
->map_state
]);
532 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
535 static void print_imsm_disk(struct imsm_super
*mpb
, int index
, __u32 reserved
)
537 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, index
);
538 char str
[MAX_RAID_SERIAL_LEN
+ 1];
546 snprintf(str
, MAX_RAID_SERIAL_LEN
+ 1, "%s", disk
->serial
);
547 printf(" Disk%02d Serial : %s\n", index
, str
);
548 s
= __le32_to_cpu(disk
->status
);
549 printf(" State :%s%s%s%s\n", s
&SPARE_DISK
? " spare" : "",
550 s
&CONFIGURED_DISK
? " active" : "",
551 s
&FAILED_DISK
? " failed" : "",
552 s
&USABLE_DISK
? " usable" : "");
553 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
554 sz
= __le32_to_cpu(disk
->total_blocks
) - reserved
;
555 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
556 human_size(sz
* 512));
559 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
561 struct intel_super
*super
= st
->sb
;
562 struct imsm_super
*mpb
= super
->anchor
;
563 char str
[MAX_SIGNATURE_LENGTH
];
568 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
571 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
572 printf(" Magic : %s\n", str
);
573 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
574 printf(" Version : %s\n", get_imsm_version(mpb
));
575 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
576 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
577 getinfo_super_imsm(st
, &info
);
578 fname_from_uuid(st
, &info
, nbuf
,'-');
579 printf(" UUID : %s\n", nbuf
+ 5);
580 sum
= __le32_to_cpu(mpb
->check_sum
);
581 printf(" Checksum : %08x %s\n", sum
,
582 __gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
583 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
));
584 printf(" Disks : %d\n", mpb
->num_disks
);
585 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
586 print_imsm_disk(mpb
, super
->disks
->index
, reserved
);
587 if (super
->bbm_log
) {
588 struct bbm_log
*log
= super
->bbm_log
;
591 printf("Bad Block Management Log:\n");
592 printf(" Log Size : %d\n", __le32_to_cpu(mpb
->bbm_log_size
));
593 printf(" Signature : %x\n", __le32_to_cpu(log
->signature
));
594 printf(" Entry Count : %d\n", __le32_to_cpu(log
->entry_count
));
595 printf(" Spare Blocks : %d\n", __le32_to_cpu(log
->reserved_spare_block_count
));
596 printf(" First Spare : %llx\n", __le64_to_cpu(log
->first_spare_lba
));
598 for (i
= 0; i
< mpb
->num_raid_devs
; i
++)
599 print_imsm_dev(__get_imsm_dev(mpb
, i
), super
->disks
->index
);
600 for (i
= 0; i
< mpb
->num_disks
; i
++) {
601 if (i
== super
->disks
->index
)
603 print_imsm_disk(mpb
, i
, reserved
);
607 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
);
609 static void brief_examine_super_imsm(struct supertype
*st
)
611 /* We just write a generic IMSM ARRAY entry */
615 struct intel_super
*super
= st
->sb
;
618 if (!super
->anchor
->num_raid_devs
)
621 getinfo_super_imsm(st
, &info
);
622 fname_from_uuid(st
, &info
, nbuf
,'-');
623 printf("ARRAY metadata=imsm auto=md UUID=%s\n", nbuf
+ 5);
624 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
625 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
627 super
->current_vol
= i
;
628 getinfo_super_imsm(st
, &info
);
629 fname_from_uuid(st
, &info
, nbuf1
,'-');
630 printf("ARRAY /dev/md/%.16s container=%s member=%d auto=mdp UUID=%s\n",
631 dev
->volume
, nbuf
+ 5, i
, nbuf1
+ 5);
635 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
637 printf("%s\n", __FUNCTION__
);
640 static void brief_detail_super_imsm(struct supertype
*st
)
644 getinfo_super_imsm(st
, &info
);
645 fname_from_uuid(st
, &info
, nbuf
,'-');
646 printf(" UUID=%s", nbuf
+ 5);
650 static int match_home_imsm(struct supertype
*st
, char *homehost
)
652 printf("%s\n", __FUNCTION__
);
657 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
659 /* The uuid returned here is used for:
660 * uuid to put into bitmap file (Create, Grow)
661 * uuid for backup header when saving critical section (Grow)
662 * comparing uuids when re-adding a device into an array
663 * In these cases the uuid required is that of the data-array,
664 * not the device-set.
665 * uuid to recognise same set when adding a missing device back
666 * to an array. This is a uuid for the device-set.
668 * For each of these we can make do with a truncated
669 * or hashed uuid rather than the original, as long as
671 * In each case the uuid required is that of the data-array,
672 * not the device-set.
674 /* imsm does not track uuid's so we synthesis one using sha1 on
675 * - The signature (Which is constant for all imsm array, but no matter)
676 * - the family_num of the container
677 * - the index number of the volume
678 * - the 'serial' number of the volume.
679 * Hopefully these are all constant.
681 struct intel_super
*super
= st
->sb
;
685 struct imsm_dev
*dev
= NULL
;
688 sha1_process_bytes(super
->anchor
->sig
, MAX_SIGNATURE_LENGTH
, &ctx
);
689 sha1_process_bytes(&super
->anchor
->family_num
, sizeof(__u32
), &ctx
);
690 if (super
->current_vol
>= 0)
691 dev
= get_imsm_dev(super
, super
->current_vol
);
693 __u32 vol
= super
->current_vol
;
694 sha1_process_bytes(&vol
, sizeof(vol
), &ctx
);
695 sha1_process_bytes(dev
->volume
, MAX_RAID_SERIAL_LEN
, &ctx
);
697 sha1_finish_ctx(&ctx
, buf
);
698 memcpy(uuid
, buf
, 4*4);
703 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
705 __u8
*v
= get_imsm_version(mpb
);
706 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
707 char major
[] = { 0, 0, 0 };
708 char minor
[] = { 0 ,0, 0 };
709 char patch
[] = { 0, 0, 0 };
710 char *ver_parse
[] = { major
, minor
, patch
};
714 while (*v
!= '\0' && v
< end
) {
715 if (*v
!= '.' && j
< 2)
716 ver_parse
[i
][j
++] = *v
;
724 *m
= strtol(minor
, NULL
, 0);
725 *p
= strtol(patch
, NULL
, 0);
729 static int imsm_level_to_layout(int level
)
737 return ALGORITHM_LEFT_ASYMMETRIC
;
744 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
)
746 struct intel_super
*super
= st
->sb
;
747 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
748 struct imsm_map
*map
= get_imsm_map(dev
, 0);
750 info
->container_member
= super
->current_vol
;
751 info
->array
.raid_disks
= map
->num_members
;
752 info
->array
.level
= get_imsm_raid_level(map
);
753 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
754 info
->array
.md_minor
= -1;
755 info
->array
.ctime
= 0;
756 info
->array
.utime
= 0;
757 info
->array
.chunk_size
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
758 info
->array
.state
= !dev
->vol
.dirty
;
760 info
->disk
.major
= 0;
761 info
->disk
.minor
= 0;
763 info
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
764 info
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
765 memset(info
->uuid
, 0, sizeof(info
->uuid
));
767 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
|| dev
->vol
.dirty
)
768 info
->resync_start
= 0;
769 else if (dev
->vol
.migr_state
)
770 info
->resync_start
= __le32_to_cpu(dev
->vol
.curr_migr_unit
);
772 info
->resync_start
= ~0ULL;
774 strncpy(info
->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
775 info
->name
[MAX_RAID_SERIAL_LEN
] = 0;
777 info
->array
.major_version
= -1;
778 info
->array
.minor_version
= -2;
779 sprintf(info
->text_version
, "/%s/%d",
780 devnum2devname(st
->container_dev
),
781 info
->container_member
);
782 info
->safe_mode_delay
= 4000; /* 4 secs like the Matrix driver */
783 uuid_from_super_imsm(st
, info
->uuid
);
787 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
)
789 struct intel_super
*super
= st
->sb
;
790 struct imsm_disk
*disk
;
793 if (super
->current_vol
>= 0) {
794 getinfo_super_imsm_volume(st
, info
);
798 /* Set raid_disks to zero so that Assemble will always pull in valid
801 info
->array
.raid_disks
= 0;
802 info
->array
.level
= LEVEL_CONTAINER
;
803 info
->array
.layout
= 0;
804 info
->array
.md_minor
= -1;
805 info
->array
.ctime
= 0; /* N/A for imsm */
806 info
->array
.utime
= 0;
807 info
->array
.chunk_size
= 0;
809 info
->disk
.major
= 0;
810 info
->disk
.minor
= 0;
811 info
->disk
.raid_disk
= -1;
812 info
->reshape_active
= 0;
813 info
->array
.major_version
= -1;
814 info
->array
.minor_version
= -2;
815 strcpy(info
->text_version
, "imsm");
816 info
->safe_mode_delay
= 0;
817 info
->disk
.number
= -1;
818 info
->disk
.state
= 0;
822 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
824 disk
= &super
->disks
->disk
;
825 info
->data_offset
= __le32_to_cpu(disk
->total_blocks
) - reserved
;
826 info
->component_size
= reserved
;
827 s
= __le32_to_cpu(disk
->status
);
828 info
->disk
.state
= s
& CONFIGURED_DISK
? (1 << MD_DISK_ACTIVE
) : 0;
829 info
->disk
.state
|= s
& FAILED_DISK
? (1 << MD_DISK_FAULTY
) : 0;
830 info
->disk
.state
|= s
& SPARE_DISK
? 0 : (1 << MD_DISK_SYNC
);
833 /* only call uuid_from_super_imsm when this disk is part of a populated container,
834 * ->compare_super may have updated the 'num_raid_devs' field for spares
836 if (info
->disk
.state
& (1 << MD_DISK_SYNC
) || super
->anchor
->num_raid_devs
)
837 uuid_from_super_imsm(st
, info
->uuid
);
839 memcpy(info
->uuid
, uuid_match_any
, sizeof(int[4]));
842 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
843 char *update
, char *devname
, int verbose
,
844 int uuid_set
, char *homehost
)
848 /* For 'assemble' and 'force' we need to return non-zero if any
849 * change was made. For others, the return value is ignored.
850 * Update options are:
851 * force-one : This device looks a bit old but needs to be included,
852 * update age info appropriately.
853 * assemble: clear any 'faulty' flag to allow this device to
855 * force-array: Array is degraded but being forced, mark it clean
856 * if that will be needed to assemble it.
858 * newdev: not used ????
859 * grow: Array has gained a new device - this is currently for
861 * resync: mark as dirty so a resync will happen.
862 * name: update the name - preserving the homehost
864 * Following are not relevant for this imsm:
865 * sparc2.2 : update from old dodgey metadata
866 * super-minor: change the preferred_minor number
867 * summaries: update redundant counters.
868 * uuid: Change the uuid of the array to match watch is given
869 * homehost: update the recorded homehost
870 * _reshape_progress: record new reshape_progress position.
873 //struct intel_super *super = st->sb;
874 //struct imsm_super *mpb = super->mpb;
876 if (strcmp(update
, "grow") == 0) {
878 if (strcmp(update
, "resync") == 0) {
879 /* dev->vol.dirty = 1; */
882 /* IMSM has no concept of UUID or homehost */
887 static size_t disks_to_mpb_size(int disks
)
891 size
= sizeof(struct imsm_super
);
892 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
893 size
+= 2 * sizeof(struct imsm_dev
);
894 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
895 size
+= (4 - 2) * sizeof(struct imsm_map
);
896 /* 4 possible disk_ord_tbl's */
897 size
+= 4 * (disks
- 1) * sizeof(__u32
);
902 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
)
904 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
907 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
910 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
914 * 0 same, or first was empty, and second was copied
915 * 1 second had wrong number
919 struct intel_super
*first
= st
->sb
;
920 struct intel_super
*sec
= tst
->sb
;
928 if (memcmp(first
->anchor
->sig
, sec
->anchor
->sig
, MAX_SIGNATURE_LENGTH
) != 0)
931 /* if an anchor does not have num_raid_devs set then it is a free
934 if (first
->anchor
->num_raid_devs
> 0 &&
935 sec
->anchor
->num_raid_devs
> 0) {
936 if (first
->anchor
->family_num
!= sec
->anchor
->family_num
)
940 /* if 'first' is a spare promote it to a populated mpb with sec's
943 if (first
->anchor
->num_raid_devs
== 0 &&
944 sec
->anchor
->num_raid_devs
> 0) {
947 /* we need to copy raid device info from sec if an allocation
948 * fails here we don't associate the spare
950 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++) {
951 first
->dev_tbl
[i
] = malloc(sizeof(struct imsm_dev
));
952 if (!first
->dev_tbl
) {
954 free(first
->dev_tbl
[i
]);
955 first
->dev_tbl
[i
] = NULL
;
957 fprintf(stderr
, "imsm: failed to associate spare\n");
960 *first
->dev_tbl
[i
] = *sec
->dev_tbl
[i
];
963 first
->anchor
->num_raid_devs
= sec
->anchor
->num_raid_devs
;
964 first
->anchor
->family_num
= sec
->anchor
->family_num
;
970 static void fd2devname(int fd
, char *name
)
979 if (fstat(fd
, &st
) != 0)
981 sprintf(path
, "/sys/dev/block/%d:%d",
982 major(st
.st_rdev
), minor(st
.st_rdev
));
984 rv
= readlink(path
, dname
, sizeof(dname
));
989 nm
= strrchr(dname
, '/');
991 snprintf(name
, MAX_RAID_SERIAL_LEN
, "/dev/%s", nm
);
995 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
997 static int imsm_read_serial(int fd
, char *devname
,
998 __u8 serial
[MAX_RAID_SERIAL_LEN
])
1000 unsigned char scsi_serial
[255];
1006 memset(scsi_serial
, 0, sizeof(scsi_serial
));
1008 rv
= scsi_get_serial(fd
, scsi_serial
, sizeof(scsi_serial
));
1010 if (rv
&& check_env("IMSM_DEVNAME_AS_SERIAL")) {
1011 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
1012 fd2devname(fd
, (char *) serial
);
1019 Name
": Failed to retrieve serial for %s\n",
1024 /* trim leading whitespace */
1025 rsp_len
= scsi_serial
[3];
1026 rsp_buf
= (char *) &scsi_serial
[4];
1031 /* truncate len to the end of rsp_buf if necessary */
1032 if (c
+ MAX_RAID_SERIAL_LEN
> rsp_buf
+ rsp_len
)
1033 len
= rsp_len
- (c
- rsp_buf
);
1035 len
= MAX_RAID_SERIAL_LEN
;
1037 /* initialize the buffer and copy rsp_buf characters */
1038 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
1039 memcpy(serial
, c
, len
);
1041 /* trim trailing whitespace starting with the last character copied */
1042 c
= (char *) &serial
[len
- 1];
1043 while (isspace(*c
) || *c
== '\0')
1049 static int serialcmp(__u8
*s1
, __u8
*s2
)
1051 return strncmp((char *) s1
, (char *) s2
, MAX_RAID_SERIAL_LEN
);
1054 static void serialcpy(__u8
*dest
, __u8
*src
)
1056 strncpy((char *) dest
, (char *) src
, MAX_RAID_SERIAL_LEN
);
1060 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
1067 __u8 serial
[MAX_RAID_SERIAL_LEN
];
1069 rv
= imsm_read_serial(fd
, devname
, serial
);
1074 /* check if this is a disk we have seen before. it may be a spare in
1075 * super->disks while the current anchor believes it is a raid member,
1076 * check if we need to update dl->index
1078 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1079 if (serialcmp(dl
->serial
, serial
) == 0)
1083 dl
= malloc(sizeof(*dl
));
1090 Name
": failed to allocate disk buffer for %s\n",
1097 dl
->major
= major(stb
.st_rdev
);
1098 dl
->minor
= minor(stb
.st_rdev
);
1099 dl
->next
= super
->disks
;
1100 dl
->fd
= keep_fd
? fd
: -1;
1101 dl
->devname
= devname
? strdup(devname
) : NULL
;
1102 serialcpy(dl
->serial
, serial
);
1104 } else if (keep_fd
) {
1109 /* look up this disk's index in the current anchor */
1110 for (i
= 0; i
< super
->anchor
->num_disks
; i
++) {
1111 struct imsm_disk
*disk_iter
;
1113 disk_iter
= __get_imsm_disk(super
->anchor
, i
);
1115 if (serialcmp(disk_iter
->serial
, dl
->serial
) == 0) {
1118 dl
->disk
= *disk_iter
;
1119 status
= __le32_to_cpu(dl
->disk
.status
);
1120 /* only set index on disks that are a member of a
1121 * populated contianer, i.e. one with raid_devs
1123 if (status
& FAILED_DISK
)
1125 else if (status
& SPARE_DISK
)
1134 /* no match, maybe a stale failed drive */
1135 if (i
== super
->anchor
->num_disks
&& dl
->index
>= 0) {
1136 dl
->disk
= *__get_imsm_disk(super
->anchor
, dl
->index
);
1137 if (__le32_to_cpu(dl
->disk
.status
) & FAILED_DISK
)
1147 static void imsm_copy_dev(struct imsm_dev
*dest
, struct imsm_dev
*src
)
1149 memcpy(dest
, src
, sizeof_imsm_dev(src
, 0));
1153 /* When migrating map0 contains the 'destination' state while map1
1154 * contains the current state. When not migrating map0 contains the
1155 * current state. This routine assumes that map[0].map_state is set to
1156 * the current array state before being called.
1158 * Migration is indicated by one of the following states
1159 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
1160 * 2/ Initialize (migr_state=1 migr_type=0 map0state=normal
1161 * map1state=unitialized)
1162 * 3/ Verify (Resync) (migr_state=1 migr_type=1 map0state=normal
1164 * 4/ Rebuild (migr_state=1 migr_type=1 map0state=normal
1165 * map1state=degraded)
1167 static void migrate(struct imsm_dev
*dev
, __u8 to_state
, int rebuild_resync
)
1169 struct imsm_map
*dest
;
1170 struct imsm_map
*src
= get_imsm_map(dev
, 0);
1172 dev
->vol
.migr_state
= 1;
1173 dev
->vol
.migr_type
= rebuild_resync
;
1174 dev
->vol
.curr_migr_unit
= 0;
1175 dest
= get_imsm_map(dev
, 1);
1177 memcpy(dest
, src
, sizeof_imsm_map(src
));
1178 src
->map_state
= to_state
;
1181 static void end_migration(struct imsm_dev
*dev
, __u8 map_state
)
1183 struct imsm_map
*map
= get_imsm_map(dev
, 0);
1185 dev
->vol
.migr_state
= 0;
1186 dev
->vol
.curr_migr_unit
= 0;
1187 map
->map_state
= map_state
;
1191 static int parse_raid_devices(struct intel_super
*super
)
1194 struct imsm_dev
*dev_new
;
1195 size_t len
, len_migr
;
1196 size_t space_needed
= 0;
1197 struct imsm_super
*mpb
= super
->anchor
;
1199 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1200 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
1202 len
= sizeof_imsm_dev(dev_iter
, 0);
1203 len_migr
= sizeof_imsm_dev(dev_iter
, 1);
1205 space_needed
+= len_migr
- len
;
1207 dev_new
= malloc(len_migr
);
1210 imsm_copy_dev(dev_new
, dev_iter
);
1211 super
->dev_tbl
[i
] = dev_new
;
1214 /* ensure that super->buf is large enough when all raid devices
1217 if (__le32_to_cpu(mpb
->mpb_size
) + space_needed
> super
->len
) {
1220 len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + space_needed
, 512);
1221 if (posix_memalign(&buf
, 512, len
) != 0)
1224 memcpy(buf
, super
->buf
, len
);
1233 /* retrieve a pointer to the bbm log which starts after all raid devices */
1234 struct bbm_log
*__get_imsm_bbm_log(struct imsm_super
*mpb
)
1238 if (__le32_to_cpu(mpb
->bbm_log_size
)) {
1240 ptr
+= mpb
->mpb_size
- __le32_to_cpu(mpb
->bbm_log_size
);
1246 static void __free_imsm(struct intel_super
*super
, int free_disks
);
1248 /* load_imsm_mpb - read matrix metadata
1249 * allocates super->mpb to be freed by free_super
1251 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
1253 unsigned long long dsize
;
1254 unsigned long long sectors
;
1256 struct imsm_super
*anchor
;
1260 get_dev_size(fd
, NULL
, &dsize
);
1262 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
1265 Name
": Cannot seek to anchor block on %s: %s\n",
1266 devname
, strerror(errno
));
1270 if (posix_memalign((void**)&anchor
, 512, 512) != 0) {
1273 Name
": Failed to allocate imsm anchor buffer"
1274 " on %s\n", devname
);
1277 if (read(fd
, anchor
, 512) != 512) {
1280 Name
": Cannot read anchor block on %s: %s\n",
1281 devname
, strerror(errno
));
1286 if (strncmp((char *) anchor
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
1289 Name
": no IMSM anchor on %s\n", devname
);
1294 __free_imsm(super
, 0);
1295 super
->len
= ROUND_UP(anchor
->mpb_size
, 512);
1296 if (posix_memalign(&super
->buf
, 512, super
->len
) != 0) {
1299 Name
": unable to allocate %zu byte mpb buffer\n",
1304 memcpy(super
->buf
, anchor
, 512);
1306 sectors
= mpb_sectors(anchor
) - 1;
1309 rc
= load_imsm_disk(fd
, super
, devname
, 0);
1311 rc
= parse_raid_devices(super
);
1315 /* read the extended mpb */
1316 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
1319 Name
": Cannot seek to extended mpb on %s: %s\n",
1320 devname
, strerror(errno
));
1324 if (read(fd
, super
->buf
+ 512, super
->len
- 512) != super
->len
- 512) {
1327 Name
": Cannot read extended mpb on %s: %s\n",
1328 devname
, strerror(errno
));
1332 check_sum
= __gen_imsm_checksum(super
->anchor
);
1333 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
1336 Name
": IMSM checksum %x != %x on %s\n",
1337 check_sum
, __le32_to_cpu(super
->anchor
->check_sum
),
1342 /* FIXME the BBM log is disk specific so we cannot use this global
1343 * buffer for all disks. Ok for now since we only look at the global
1344 * bbm_log_size parameter to gate assembly
1346 super
->bbm_log
= __get_imsm_bbm_log(super
->anchor
);
1348 rc
= load_imsm_disk(fd
, super
, devname
, 0);
1350 rc
= parse_raid_devices(super
);
1355 static void __free_imsm_disk(struct dl
*d
)
1364 static void free_imsm_disks(struct intel_super
*super
)
1368 while (super
->disks
) {
1370 super
->disks
= d
->next
;
1371 __free_imsm_disk(d
);
1373 while (super
->missing
) {
1375 super
->missing
= d
->next
;
1376 __free_imsm_disk(d
);
1381 /* free all the pieces hanging off of a super pointer */
1382 static void __free_imsm(struct intel_super
*super
, int free_disks
)
1391 free_imsm_disks(super
);
1392 for (i
= 0; i
< IMSM_MAX_RAID_DEVS
; i
++)
1393 if (super
->dev_tbl
[i
]) {
1394 free(super
->dev_tbl
[i
]);
1395 super
->dev_tbl
[i
] = NULL
;
1399 static void free_imsm(struct intel_super
*super
)
1401 __free_imsm(super
, 1);
1405 static void free_super_imsm(struct supertype
*st
)
1407 struct intel_super
*super
= st
->sb
;
1416 static struct intel_super
*alloc_super(int creating_imsm
)
1418 struct intel_super
*super
= malloc(sizeof(*super
));
1421 memset(super
, 0, sizeof(*super
));
1422 super
->creating_imsm
= creating_imsm
;
1423 super
->current_vol
= -1;
1430 /* find_missing - helper routine for load_super_imsm_all that identifies
1431 * disks that have disappeared from the system. This routine relies on
1432 * the mpb being uptodate, which it is at load time.
1434 static int find_missing(struct intel_super
*super
)
1437 struct imsm_super
*mpb
= super
->anchor
;
1439 struct imsm_disk
*disk
;
1442 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1443 disk
= __get_imsm_disk(mpb
, i
);
1444 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1445 if (serialcmp(dl
->disk
.serial
, disk
->serial
) == 0)
1449 /* ok we have a 'disk' without a live entry in
1452 status
= __le32_to_cpu(disk
->status
);
1453 if (status
& FAILED_DISK
|| !(status
& USABLE_DISK
))
1454 continue; /* never mind, already marked */
1456 dl
= malloc(sizeof(*dl
));
1462 dl
->devname
= strdup("missing");
1464 serialcpy(dl
->serial
, disk
->serial
);
1466 dl
->next
= super
->missing
;
1467 super
->missing
= dl
;
1473 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
1474 char *devname
, int keep_fd
)
1477 struct intel_super
*super
;
1478 struct mdinfo
*sd
, *best
= NULL
;
1485 /* check if this disk is a member of an active array */
1486 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
1490 if (sra
->array
.major_version
!= -1 ||
1491 sra
->array
.minor_version
!= -2 ||
1492 strcmp(sra
->text_version
, "imsm") != 0)
1495 super
= alloc_super(0);
1499 /* find the most up to date disk in this array, skipping spares */
1500 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
1501 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
1502 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
1507 rv
= load_imsm_mpb(dfd
, super
, NULL
);
1511 if (super
->anchor
->num_raid_devs
== 0)
1514 gen
= __le32_to_cpu(super
->anchor
->generation_num
);
1515 if (!best
|| gen
> bestgen
) {
1530 /* load the most up to date anchor */
1531 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
1532 dfd
= dev_open(nm
, O_RDONLY
);
1537 rv
= load_imsm_mpb(dfd
, super
, NULL
);
1544 /* re-parse the disk list with the current anchor */
1545 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
1546 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
1547 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
1552 load_imsm_disk(dfd
, super
, NULL
, keep_fd
);
1558 if (find_missing(super
) != 0) {
1563 if (st
->subarray
[0]) {
1564 if (atoi(st
->subarray
) <= super
->anchor
->num_raid_devs
)
1565 super
->current_vol
= atoi(st
->subarray
);
1571 st
->container_dev
= fd2devnum(fd
);
1572 if (st
->ss
== NULL
) {
1573 st
->ss
= &super_imsm
;
1574 st
->minor_version
= 0;
1575 st
->max_devs
= IMSM_MAX_DEVICES
;
1577 st
->loaded_container
= 1;
1583 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
1585 struct intel_super
*super
;
1589 if (load_super_imsm_all(st
, fd
, &st
->sb
, devname
, 1) == 0)
1592 if (st
->subarray
[0])
1593 return 1; /* FIXME */
1595 super
= alloc_super(0);
1598 Name
": malloc of %zu failed.\n",
1603 rv
= load_imsm_mpb(fd
, super
, devname
);
1608 Name
": Failed to load all information "
1609 "sections on %s\n", devname
);
1615 if (st
->ss
== NULL
) {
1616 st
->ss
= &super_imsm
;
1617 st
->minor_version
= 0;
1618 st
->max_devs
= IMSM_MAX_DEVICES
;
1620 st
->loaded_container
= 0;
1625 static __u16
info_to_blocks_per_strip(mdu_array_info_t
*info
)
1627 if (info
->level
== 1)
1629 return info
->chunk_size
>> 9;
1632 static __u32
info_to_num_data_stripes(mdu_array_info_t
*info
)
1636 num_stripes
= (info
->size
* 2) / info_to_blocks_per_strip(info
);
1637 if (info
->level
== 1)
1643 static __u32
info_to_blocks_per_member(mdu_array_info_t
*info
)
1645 return (info
->size
* 2) & ~(info_to_blocks_per_strip(info
) - 1);
1648 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
1649 unsigned long long size
, char *name
,
1650 char *homehost
, int *uuid
)
1652 /* We are creating a volume inside a pre-existing container.
1653 * so st->sb is already set.
1655 struct intel_super
*super
= st
->sb
;
1656 struct imsm_super
*mpb
= super
->anchor
;
1657 struct imsm_dev
*dev
;
1658 struct imsm_vol
*vol
;
1659 struct imsm_map
*map
;
1660 int idx
= mpb
->num_raid_devs
;
1662 unsigned long long array_blocks
;
1664 size_t size_old
, size_new
;
1666 if (mpb
->num_raid_devs
>= 2) {
1667 fprintf(stderr
, Name
": This imsm-container already has the "
1668 "maximum of 2 volumes\n");
1672 /* ensure the mpb is large enough for the new data */
1673 size_old
= __le32_to_cpu(mpb
->mpb_size
);
1674 size_new
= disks_to_mpb_size(info
->nr_disks
);
1675 if (size_new
> size_old
) {
1677 size_t size_round
= ROUND_UP(size_new
, 512);
1679 if (posix_memalign(&mpb_new
, 512, size_round
) != 0) {
1680 fprintf(stderr
, Name
": could not allocate new mpb\n");
1683 memcpy(mpb_new
, mpb
, size_old
);
1686 super
->anchor
= mpb_new
;
1687 mpb
->mpb_size
= __cpu_to_le32(size_new
);
1688 memset(mpb_new
+ size_old
, 0, size_round
- size_old
);
1690 super
->current_vol
= idx
;
1691 /* when creating the first raid device in this container set num_disks
1692 * to zero, i.e. delete this spare and add raid member devices in
1693 * add_to_super_imsm_volume()
1695 if (super
->current_vol
== 0)
1697 sprintf(st
->subarray
, "%d", idx
);
1698 dev
= malloc(sizeof(*dev
) + sizeof(__u32
) * (info
->raid_disks
- 1));
1700 fprintf(stderr
, Name
": could not allocate raid device\n");
1703 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
1704 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
1705 info
->layout
, info
->chunk_size
,
1707 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
1708 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
1709 dev
->status
= __cpu_to_le32(0);
1710 dev
->reserved_blocks
= __cpu_to_le32(0);
1712 vol
->migr_state
= 0;
1715 vol
->curr_migr_unit
= 0;
1716 for (i
= 0; i
< idx
; i
++) {
1717 struct imsm_dev
*prev
= get_imsm_dev(super
, i
);
1718 struct imsm_map
*pmap
= get_imsm_map(prev
, 0);
1720 offset
+= __le32_to_cpu(pmap
->blocks_per_member
);
1721 offset
+= IMSM_RESERVED_SECTORS
;
1723 map
= get_imsm_map(dev
, 0);
1724 map
->pba_of_lba0
= __cpu_to_le32(offset
);
1725 map
->blocks_per_member
= __cpu_to_le32(info_to_blocks_per_member(info
));
1726 map
->blocks_per_strip
= __cpu_to_le16(info_to_blocks_per_strip(info
));
1727 map
->num_data_stripes
= __cpu_to_le32(info_to_num_data_stripes(info
));
1728 map
->map_state
= info
->level
? IMSM_T_STATE_UNINITIALIZED
:
1729 IMSM_T_STATE_NORMAL
;
1731 if (info
->level
== 1 && info
->raid_disks
> 2) {
1732 fprintf(stderr
, Name
": imsm does not support more than 2 disks"
1733 "in a raid1 volume\n");
1736 if (info
->level
== 10)
1737 map
->raid_level
= 1;
1739 map
->raid_level
= info
->level
;
1741 map
->num_members
= info
->raid_disks
;
1742 for (i
= 0; i
< map
->num_members
; i
++) {
1743 /* initialized in add_to_super */
1744 set_imsm_ord_tbl_ent(map
, i
, 0);
1746 mpb
->num_raid_devs
++;
1747 super
->dev_tbl
[super
->current_vol
] = dev
;
1752 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
1753 unsigned long long size
, char *name
,
1754 char *homehost
, int *uuid
)
1756 /* This is primarily called by Create when creating a new array.
1757 * We will then get add_to_super called for each component, and then
1758 * write_init_super called to write it out to each device.
1759 * For IMSM, Create can create on fresh devices or on a pre-existing
1761 * To create on a pre-existing array a different method will be called.
1762 * This one is just for fresh drives.
1764 struct intel_super
*super
;
1765 struct imsm_super
*mpb
;
1773 return init_super_imsm_volume(st
, info
, size
, name
, homehost
,
1776 super
= alloc_super(1);
1779 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
1780 if (posix_memalign(&super
->buf
, 512, mpb_size
) != 0) {
1785 memset(mpb
, 0, mpb_size
);
1787 memcpy(mpb
->sig
, MPB_SIGNATURE
, strlen(MPB_SIGNATURE
));
1788 memcpy(mpb
->sig
+ strlen(MPB_SIGNATURE
), MPB_VERSION_RAID5
,
1789 strlen(MPB_VERSION_RAID5
));
1790 mpb
->mpb_size
= mpb_size
;
1797 static void add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
1798 int fd
, char *devname
)
1800 struct intel_super
*super
= st
->sb
;
1801 struct imsm_super
*mpb
= super
->anchor
;
1803 struct imsm_dev
*dev
;
1804 struct imsm_map
*map
;
1807 dev
= get_imsm_dev(super
, super
->current_vol
);
1808 map
= get_imsm_map(dev
, 0);
1810 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1811 if (dl
->major
== dk
->major
&&
1812 dl
->minor
== dk
->minor
)
1815 if (!dl
|| ! (dk
->state
& (1<<MD_DISK_SYNC
)))
1818 /* add a pristine spare to the metadata */
1819 if (dl
->index
< 0) {
1820 dl
->index
= super
->anchor
->num_disks
;
1821 super
->anchor
->num_disks
++;
1823 set_imsm_ord_tbl_ent(map
, dk
->number
, dl
->index
);
1824 status
= CONFIGURED_DISK
| USABLE_DISK
;
1825 dl
->disk
.status
= __cpu_to_le32(status
);
1827 /* if we are creating the first raid device update the family number */
1828 if (super
->current_vol
== 0) {
1830 struct imsm_dev
*_dev
= __get_imsm_dev(mpb
, 0);
1831 struct imsm_disk
*_disk
= __get_imsm_disk(mpb
, dl
->index
);
1835 sum
= __gen_imsm_checksum(mpb
);
1836 mpb
->family_num
= __cpu_to_le32(sum
);
1840 static void add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
1841 int fd
, char *devname
)
1843 struct intel_super
*super
= st
->sb
;
1845 unsigned long long size
;
1850 if (super
->current_vol
>= 0) {
1851 add_to_super_imsm_volume(st
, dk
, fd
, devname
);
1856 dd
= malloc(sizeof(*dd
));
1859 Name
": malloc failed %s:%d.\n", __func__
, __LINE__
);
1862 memset(dd
, 0, sizeof(*dd
));
1863 dd
->major
= major(stb
.st_rdev
);
1864 dd
->minor
= minor(stb
.st_rdev
);
1866 dd
->devname
= devname
? strdup(devname
) : NULL
;
1868 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
1871 Name
": failed to retrieve scsi serial, aborting\n");
1876 get_dev_size(fd
, NULL
, &size
);
1878 status
= USABLE_DISK
| SPARE_DISK
;
1879 serialcpy(dd
->disk
.serial
, dd
->serial
);
1880 dd
->disk
.total_blocks
= __cpu_to_le32(size
);
1881 dd
->disk
.status
= __cpu_to_le32(status
);
1882 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
1883 dd
->disk
.scsi_id
= __cpu_to_le32(id
);
1885 dd
->disk
.scsi_id
= __cpu_to_le32(0);
1887 if (st
->update_tail
) {
1888 dd
->next
= super
->add
;
1891 dd
->next
= super
->disks
;
1896 static int store_imsm_mpb(int fd
, struct intel_super
*super
);
1898 /* spare records have their own family number and do not have any defined raid
1901 static int write_super_imsm_spares(struct intel_super
*super
, int doclose
)
1903 struct imsm_super mpb_save
;
1904 struct imsm_super
*mpb
= super
->anchor
;
1909 mpb
->num_raid_devs
= 0;
1911 mpb
->mpb_size
= sizeof(struct imsm_super
);
1912 mpb
->generation_num
= __cpu_to_le32(1UL);
1914 for (d
= super
->disks
; d
; d
= d
->next
) {
1918 mpb
->disk
[0] = d
->disk
;
1919 sum
= __gen_imsm_checksum(mpb
);
1920 mpb
->family_num
= __cpu_to_le32(sum
);
1921 sum
= __gen_imsm_checksum(mpb
);
1922 mpb
->check_sum
= __cpu_to_le32(sum
);
1924 if (store_imsm_mpb(d
->fd
, super
)) {
1925 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
1926 __func__
, d
->major
, d
->minor
, strerror(errno
));
1940 static int write_super_imsm(struct intel_super
*super
, int doclose
)
1942 struct imsm_super
*mpb
= super
->anchor
;
1948 __u32 mpb_size
= sizeof(struct imsm_super
) - sizeof(struct imsm_disk
);
1950 /* 'generation' is incremented everytime the metadata is written */
1951 generation
= __le32_to_cpu(mpb
->generation_num
);
1953 mpb
->generation_num
= __cpu_to_le32(generation
);
1955 mpb_size
+= sizeof(struct imsm_disk
) * mpb
->num_disks
;
1956 for (d
= super
->disks
; d
; d
= d
->next
) {
1960 mpb
->disk
[d
->index
] = d
->disk
;
1962 for (d
= super
->missing
; d
; d
= d
->next
)
1963 mpb
->disk
[d
->index
] = d
->disk
;
1965 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1966 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
1968 imsm_copy_dev(dev
, super
->dev_tbl
[i
]);
1969 mpb_size
+= sizeof_imsm_dev(dev
, 0);
1971 mpb_size
+= __le32_to_cpu(mpb
->bbm_log_size
);
1972 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
1974 /* recalculate checksum */
1975 sum
= __gen_imsm_checksum(mpb
);
1976 mpb
->check_sum
= __cpu_to_le32(sum
);
1978 /* write the mpb for disks that compose raid devices */
1979 for (d
= super
->disks
; d
; d
= d
->next
) {
1982 if (store_imsm_mpb(d
->fd
, super
))
1983 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
1984 __func__
, d
->major
, d
->minor
, strerror(errno
));
1992 return write_super_imsm_spares(super
, doclose
);
1998 static int create_array(struct supertype
*st
)
2001 struct imsm_update_create_array
*u
;
2002 struct intel_super
*super
= st
->sb
;
2003 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
2005 len
= sizeof(*u
) - sizeof(*dev
) + sizeof_imsm_dev(dev
, 0);
2008 fprintf(stderr
, "%s: failed to allocate update buffer\n",
2013 u
->type
= update_create_array
;
2014 u
->dev_idx
= super
->current_vol
;
2015 imsm_copy_dev(&u
->dev
, dev
);
2016 append_metadata_update(st
, u
, len
);
2021 static int _add_disk(struct supertype
*st
)
2023 struct intel_super
*super
= st
->sb
;
2025 struct imsm_update_add_disk
*u
;
2033 fprintf(stderr
, "%s: failed to allocate update buffer\n",
2038 u
->type
= update_add_disk
;
2039 append_metadata_update(st
, u
, len
);
2044 static int write_init_super_imsm(struct supertype
*st
)
2046 if (st
->update_tail
) {
2047 /* queue the recently created array / added disk
2048 * as a metadata update */
2049 struct intel_super
*super
= st
->sb
;
2053 /* determine if we are creating a volume or adding a disk */
2054 if (super
->current_vol
< 0) {
2055 /* in the add disk case we are running in mdmon
2056 * context, so don't close fd's
2058 return _add_disk(st
);
2060 rv
= create_array(st
);
2062 for (d
= super
->disks
; d
; d
= d
->next
) {
2069 return write_super_imsm(st
->sb
, 1);
2073 static int store_zero_imsm(struct supertype
*st
, int fd
)
2075 unsigned long long dsize
;
2078 get_dev_size(fd
, NULL
, &dsize
);
2080 /* first block is stored on second to last sector of the disk */
2081 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
2084 if (posix_memalign(&buf
, 512, 512) != 0)
2087 memset(buf
, 0, 512);
2088 if (write(fd
, buf
, 512) != 512)
2093 static int imsm_bbm_log_size(struct imsm_super
*mpb
)
2095 return __le32_to_cpu(mpb
->bbm_log_size
);
2099 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
2100 int layout
, int raiddisks
, int chunk
,
2101 unsigned long long size
, char *dev
,
2102 unsigned long long *freesize
,
2106 unsigned long long ldsize
;
2108 if (level
!= LEVEL_CONTAINER
)
2113 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
2116 fprintf(stderr
, Name
": imsm: Cannot open %s: %s\n",
2117 dev
, strerror(errno
));
2120 if (!get_dev_size(fd
, dev
, &ldsize
)) {
2126 *freesize
= avail_size_imsm(st
, ldsize
>> 9);
2131 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
2132 * FIX ME add ahci details
2134 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
2135 int layout
, int raiddisks
, int chunk
,
2136 unsigned long long size
, char *dev
,
2137 unsigned long long *freesize
,
2141 struct intel_super
*super
= st
->sb
;
2143 unsigned long long pos
= 0;
2144 unsigned long long maxsize
;
2148 if (level
== LEVEL_CONTAINER
)
2151 if (level
== 1 && raiddisks
> 2) {
2153 fprintf(stderr
, Name
": imsm does not support more "
2154 "than 2 in a raid1 configuration\n");
2158 /* We must have the container info already read in. */
2163 /* General test: make sure there is space for
2164 * 'raiddisks' device extents of size 'size' at a given
2167 unsigned long long minsize
= size
*2 /* convert to blocks */;
2168 unsigned long long start_offset
= ~0ULL;
2171 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
2172 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2177 e
= get_extents(super
, dl
);
2180 unsigned long long esize
;
2181 esize
= e
[i
].start
- pos
;
2182 if (esize
>= minsize
)
2184 if (found
&& start_offset
== ~0ULL) {
2187 } else if (found
&& pos
!= start_offset
) {
2191 pos
= e
[i
].start
+ e
[i
].size
;
2193 } while (e
[i
-1].size
);
2198 if (dcnt
< raiddisks
) {
2200 fprintf(stderr
, Name
": imsm: Not enough "
2201 "devices with space for this array "
2208 /* This device must be a member of the set */
2209 if (stat(dev
, &stb
) < 0)
2211 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
2213 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2214 if (dl
->major
== major(stb
.st_rdev
) &&
2215 dl
->minor
== minor(stb
.st_rdev
))
2220 fprintf(stderr
, Name
": %s is not in the "
2221 "same imsm set\n", dev
);
2224 e
= get_extents(super
, dl
);
2228 unsigned long long esize
;
2229 esize
= e
[i
].start
- pos
;
2230 if (esize
>= maxsize
)
2232 pos
= e
[i
].start
+ e
[i
].size
;
2234 } while (e
[i
-1].size
);
2235 *freesize
= maxsize
;
2240 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
2241 int raiddisks
, int chunk
, unsigned long long size
,
2242 char *dev
, unsigned long long *freesize
,
2248 /* if given unused devices create a container
2249 * if given given devices in a container create a member volume
2251 if (level
== LEVEL_CONTAINER
) {
2252 /* Must be a fresh device to add to a container */
2253 return validate_geometry_imsm_container(st
, level
, layout
,
2254 raiddisks
, chunk
, size
,
2260 /* creating in a given container */
2261 return validate_geometry_imsm_volume(st
, level
, layout
,
2262 raiddisks
, chunk
, size
,
2263 dev
, freesize
, verbose
);
2266 /* limit creation to the following levels */
2278 /* This device needs to be a device in an 'imsm' container */
2279 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
2283 Name
": Cannot create this array on device %s\n",
2288 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
2290 fprintf(stderr
, Name
": Cannot open %s: %s\n",
2291 dev
, strerror(errno
));
2294 /* Well, it is in use by someone, maybe an 'imsm' container. */
2295 cfd
= open_container(fd
);
2299 fprintf(stderr
, Name
": Cannot use %s: It is busy\n",
2303 sra
= sysfs_read(cfd
, 0, GET_VERSION
);
2305 if (sra
&& sra
->array
.major_version
== -1 &&
2306 strcmp(sra
->text_version
, "imsm") == 0) {
2307 /* This is a member of a imsm container. Load the container
2308 * and try to create a volume
2310 struct intel_super
*super
;
2312 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
, 1) == 0) {
2314 st
->container_dev
= fd2devnum(cfd
);
2316 return validate_geometry_imsm_volume(st
, level
, layout
,
2322 } else /* may belong to another container */
2327 #endif /* MDASSEMBLE */
2329 static struct mdinfo
*container_content_imsm(struct supertype
*st
)
2331 /* Given a container loaded by load_super_imsm_all,
2332 * extract information about all the arrays into
2335 * For each imsm_dev create an mdinfo, fill it in,
2336 * then look for matching devices in super->disks
2337 * and create appropriate device mdinfo.
2339 struct intel_super
*super
= st
->sb
;
2340 struct imsm_super
*mpb
= super
->anchor
;
2341 struct mdinfo
*rest
= NULL
;
2344 /* do not assemble arrays that might have bad blocks */
2345 if (imsm_bbm_log_size(super
->anchor
)) {
2346 fprintf(stderr
, Name
": BBM log found in metadata. "
2347 "Cannot activate array(s).\n");
2351 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
2352 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
2353 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2354 struct mdinfo
*this;
2357 this = malloc(sizeof(*this));
2358 memset(this, 0, sizeof(*this));
2361 super
->current_vol
= i
;
2362 getinfo_super_imsm_volume(st
, this);
2363 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
2364 struct mdinfo
*info_d
;
2372 idx
= get_imsm_disk_idx(dev
, slot
);
2373 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
2374 for (d
= super
->disks
; d
; d
= d
->next
)
2375 if (d
->index
== idx
)
2381 s
= d
? __le32_to_cpu(d
->disk
.status
) : 0;
2382 if (s
& FAILED_DISK
)
2384 if (!(s
& USABLE_DISK
))
2386 if (ord
& IMSM_ORD_REBUILD
)
2390 * if we skip some disks the array will be assmebled degraded;
2391 * reset resync start to avoid a dirty-degraded situation
2393 * FIXME handle dirty degraded
2395 if (skip
&& !dev
->vol
.dirty
)
2396 this->resync_start
= ~0ULL;
2400 info_d
= malloc(sizeof(*info_d
));
2402 fprintf(stderr
, Name
": failed to allocate disk"
2403 " for volume %s\n", (char *) dev
->volume
);
2408 memset(info_d
, 0, sizeof(*info_d
));
2409 info_d
->next
= this->devs
;
2410 this->devs
= info_d
;
2412 info_d
->disk
.number
= d
->index
;
2413 info_d
->disk
.major
= d
->major
;
2414 info_d
->disk
.minor
= d
->minor
;
2415 info_d
->disk
.raid_disk
= slot
;
2417 this->array
.working_disks
++;
2419 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
2420 info_d
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
2421 info_d
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
2423 strcpy(info_d
->name
, d
->devname
);
2433 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
2436 struct intel_super
*super
= c
->sb
;
2437 struct imsm_super
*mpb
= super
->anchor
;
2439 if (atoi(inst
) >= mpb
->num_raid_devs
) {
2440 fprintf(stderr
, "%s: subarry index %d, out of range\n",
2441 __func__
, atoi(inst
));
2445 dprintf("imsm: open_new %s\n", inst
);
2446 a
->info
.container_member
= atoi(inst
);
2450 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
, int failed
)
2452 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2455 return map
->map_state
== IMSM_T_STATE_UNINITIALIZED
?
2456 IMSM_T_STATE_UNINITIALIZED
: IMSM_T_STATE_NORMAL
;
2458 switch (get_imsm_raid_level(map
)) {
2460 return IMSM_T_STATE_FAILED
;
2463 if (failed
< map
->num_members
)
2464 return IMSM_T_STATE_DEGRADED
;
2466 return IMSM_T_STATE_FAILED
;
2471 * check to see if any mirrors have failed, otherwise we
2472 * are degraded. Even numbered slots are mirrored on
2476 /* gcc -Os complains that this is unused */
2477 int insync
= insync
;
2479 for (i
= 0; i
< map
->num_members
; i
++) {
2480 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
);
2481 int idx
= ord_to_idx(ord
);
2482 struct imsm_disk
*disk
;
2484 /* reset the potential in-sync count on even-numbered
2485 * slots. num_copies is always 2 for imsm raid10
2490 disk
= get_imsm_disk(super
, idx
);
2492 __le32_to_cpu(disk
->status
) & FAILED_DISK
||
2493 ord
& IMSM_ORD_REBUILD
)
2496 /* no in-sync disks left in this mirror the
2500 return IMSM_T_STATE_FAILED
;
2503 return IMSM_T_STATE_DEGRADED
;
2507 return IMSM_T_STATE_DEGRADED
;
2509 return IMSM_T_STATE_FAILED
;
2515 return map
->map_state
;
2518 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
)
2522 struct imsm_disk
*disk
;
2523 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2525 for (i
= 0; i
< map
->num_members
; i
++) {
2526 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
);
2527 int idx
= ord_to_idx(ord
);
2529 disk
= get_imsm_disk(super
, idx
);
2531 __le32_to_cpu(disk
->status
) & FAILED_DISK
||
2532 ord
& IMSM_ORD_REBUILD
)
2539 static int is_resyncing(struct imsm_dev
*dev
)
2541 struct imsm_map
*migr_map
;
2543 if (!dev
->vol
.migr_state
)
2546 if (dev
->vol
.migr_type
== 0)
2549 migr_map
= get_imsm_map(dev
, 1);
2551 if (migr_map
->map_state
== IMSM_T_STATE_NORMAL
)
2557 static int is_rebuilding(struct imsm_dev
*dev
)
2559 struct imsm_map
*migr_map
;
2561 if (!dev
->vol
.migr_state
)
2564 if (dev
->vol
.migr_type
== 0)
2567 migr_map
= get_imsm_map(dev
, 1);
2569 if (migr_map
->map_state
== IMSM_T_STATE_DEGRADED
)
2575 static void mark_failure(struct imsm_disk
*disk
)
2577 __u32 status
= __le32_to_cpu(disk
->status
);
2579 if (status
& FAILED_DISK
)
2581 status
|= FAILED_DISK
;
2582 disk
->status
= __cpu_to_le32(status
);
2583 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
2584 memmove(&disk
->serial
[0], &disk
->serial
[1], MAX_RAID_SERIAL_LEN
- 1);
2587 /* Handle dirty -> clean transititions and resync. Degraded and rebuild
2588 * states are handled in imsm_set_disk() with one exception, when a
2589 * resync is stopped due to a new failure this routine will set the
2590 * 'degraded' state for the array.
2592 static int imsm_set_array_state(struct active_array
*a
, int consistent
)
2594 int inst
= a
->info
.container_member
;
2595 struct intel_super
*super
= a
->container
->sb
;
2596 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
2597 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2598 int failed
= imsm_count_failed(super
, dev
);
2599 __u8 map_state
= imsm_check_degraded(super
, dev
, failed
);
2601 /* before we activate this array handle any missing disks */
2602 if (consistent
== 2 && super
->missing
) {
2605 dprintf("imsm: mark missing\n");
2606 end_migration(dev
, map_state
);
2607 for (dl
= super
->missing
; dl
; dl
= dl
->next
)
2608 mark_failure(&dl
->disk
);
2609 super
->updates_pending
++;
2612 if (consistent
== 2 &&
2613 (!is_resync_complete(a
) ||
2614 map_state
!= IMSM_T_STATE_NORMAL
||
2615 dev
->vol
.migr_state
))
2618 if (is_resync_complete(a
)) {
2619 /* complete intialization / resync,
2620 * recovery is completed in ->set_disk
2622 if (is_resyncing(dev
)) {
2623 dprintf("imsm: mark resync done\n");
2624 end_migration(dev
, map_state
);
2625 super
->updates_pending
++;
2627 } else if (!is_resyncing(dev
) && !failed
) {
2628 /* mark the start of the init process if nothing is failed */
2629 dprintf("imsm: mark resync start (%llu)\n", a
->resync_start
);
2630 map
->map_state
= map_state
;
2631 migrate(dev
, IMSM_T_STATE_NORMAL
,
2632 map
->map_state
== IMSM_T_STATE_NORMAL
);
2633 super
->updates_pending
++;
2636 /* check if we can update the migration checkpoint */
2637 if (dev
->vol
.migr_state
&&
2638 __le32_to_cpu(dev
->vol
.curr_migr_unit
) != a
->resync_start
) {
2639 dprintf("imsm: checkpoint migration (%llu)\n", a
->resync_start
);
2640 dev
->vol
.curr_migr_unit
= __cpu_to_le32(a
->resync_start
);
2641 super
->updates_pending
++;
2644 /* mark dirty / clean */
2645 if (dev
->vol
.dirty
!= !consistent
) {
2646 dprintf("imsm: mark '%s' (%llu)\n",
2647 consistent
? "clean" : "dirty", a
->resync_start
);
2652 super
->updates_pending
++;
2657 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
2659 int inst
= a
->info
.container_member
;
2660 struct intel_super
*super
= a
->container
->sb
;
2661 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
2662 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2663 struct imsm_disk
*disk
;
2669 if (n
> map
->num_members
)
2670 fprintf(stderr
, "imsm: set_disk %d out of range 0..%d\n",
2671 n
, map
->num_members
- 1);
2676 dprintf("imsm: set_disk %d:%x\n", n
, state
);
2678 ord
= get_imsm_ord_tbl_ent(dev
, n
);
2679 disk
= get_imsm_disk(super
, ord_to_idx(ord
));
2681 /* check for new failures */
2682 status
= __le32_to_cpu(disk
->status
);
2683 if ((state
& DS_FAULTY
) && !(status
& FAILED_DISK
)) {
2685 super
->updates_pending
++;
2688 /* check if in_sync */
2689 if (state
& DS_INSYNC
&& ord
& IMSM_ORD_REBUILD
) {
2690 struct imsm_map
*migr_map
= get_imsm_map(dev
, 1);
2692 set_imsm_ord_tbl_ent(migr_map
, n
, ord_to_idx(ord
));
2693 super
->updates_pending
++;
2696 failed
= imsm_count_failed(super
, dev
);
2697 map_state
= imsm_check_degraded(super
, dev
, failed
);
2699 /* check if recovery complete, newly degraded, or failed */
2700 if (map_state
== IMSM_T_STATE_NORMAL
&& is_rebuilding(dev
)) {
2701 end_migration(dev
, map_state
);
2702 super
->updates_pending
++;
2703 } else if (map_state
== IMSM_T_STATE_DEGRADED
&&
2704 map
->map_state
!= map_state
&&
2705 !dev
->vol
.migr_state
) {
2706 dprintf("imsm: mark degraded\n");
2707 map
->map_state
= map_state
;
2708 super
->updates_pending
++;
2709 } else if (map_state
== IMSM_T_STATE_FAILED
&&
2710 map
->map_state
!= map_state
) {
2711 dprintf("imsm: mark failed\n");
2712 end_migration(dev
, map_state
);
2713 super
->updates_pending
++;
2717 static int store_imsm_mpb(int fd
, struct intel_super
*super
)
2719 struct imsm_super
*mpb
= super
->anchor
;
2720 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
2721 unsigned long long dsize
;
2722 unsigned long long sectors
;
2724 get_dev_size(fd
, NULL
, &dsize
);
2726 if (mpb_size
> 512) {
2727 /* -1 to account for anchor */
2728 sectors
= mpb_sectors(mpb
) - 1;
2730 /* write the extended mpb to the sectors preceeding the anchor */
2731 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0)
2734 if (write(fd
, super
->buf
+ 512, 512 * sectors
) != 512 * sectors
)
2738 /* first block is stored on second to last sector of the disk */
2739 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
2742 if (write(fd
, super
->buf
, 512) != 512)
2748 static void imsm_sync_metadata(struct supertype
*container
)
2750 struct intel_super
*super
= container
->sb
;
2752 if (!super
->updates_pending
)
2755 write_super_imsm(super
, 0);
2757 super
->updates_pending
= 0;
2760 static struct dl
*imsm_readd(struct intel_super
*super
, int idx
, struct active_array
*a
)
2762 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
2763 int i
= get_imsm_disk_idx(dev
, idx
);
2766 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
2770 if (dl
&& __le32_to_cpu(dl
->disk
.status
) & FAILED_DISK
)
2774 dprintf("%s: found %x:%x\n", __func__
, dl
->major
, dl
->minor
);
2779 static struct dl
*imsm_add_spare(struct intel_super
*super
, int slot
, struct active_array
*a
)
2781 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
2782 int idx
= get_imsm_disk_idx(dev
, slot
);
2783 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2784 unsigned long long esize
;
2785 unsigned long long pos
;
2794 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
2795 /* If in this array, skip */
2796 for (d
= a
->info
.devs
; d
; d
= d
->next
)
2797 if (d
->state_fd
>= 0 &&
2798 d
->disk
.major
== dl
->major
&&
2799 d
->disk
.minor
== dl
->minor
) {
2800 dprintf("%x:%x already in array\n", dl
->major
, dl
->minor
);
2806 /* skip in use or failed drives */
2807 status
= __le32_to_cpu(dl
->disk
.status
);
2808 if (status
& FAILED_DISK
|| idx
== dl
->index
) {
2809 dprintf("%x:%x status ( %s%s)\n",
2810 dl
->major
, dl
->minor
,
2811 status
& FAILED_DISK
? "failed " : "",
2812 idx
== dl
->index
? "in use " : "");
2816 /* Does this unused device have the requisite free space?
2817 * We need a->info.component_size sectors
2819 ex
= get_extents(super
, dl
);
2821 dprintf("cannot get extents\n");
2827 array_start
= __le32_to_cpu(map
->pba_of_lba0
);
2830 /* check that we can start at pba_of_lba0 with
2831 * a->info.component_size of space
2833 esize
= ex
[j
].start
- pos
;
2834 if (array_start
>= pos
&&
2835 array_start
+ a
->info
.component_size
< ex
[j
].start
) {
2839 pos
= ex
[j
].start
+ ex
[j
].size
;
2842 } while (ex
[j
-1].size
);
2846 dprintf("%x:%x does not have %llu at %d\n",
2847 dl
->major
, dl
->minor
,
2848 a
->info
.component_size
,
2849 __le32_to_cpu(map
->pba_of_lba0
));
2859 static struct mdinfo
*imsm_activate_spare(struct active_array
*a
,
2860 struct metadata_update
**updates
)
2863 * Find a device with unused free space and use it to replace a
2864 * failed/vacant region in an array. We replace failed regions one a
2865 * array at a time. The result is that a new spare disk will be added
2866 * to the first failed array and after the monitor has finished
2867 * propagating failures the remainder will be consumed.
2869 * FIXME add a capability for mdmon to request spares from another
2873 struct intel_super
*super
= a
->container
->sb
;
2874 int inst
= a
->info
.container_member
;
2875 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
2876 struct imsm_map
*map
= get_imsm_map(dev
, 0);
2877 int failed
= a
->info
.array
.raid_disks
;
2878 struct mdinfo
*rv
= NULL
;
2881 struct metadata_update
*mu
;
2883 struct imsm_update_activate_spare
*u
;
2887 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
2888 if ((d
->curr_state
& DS_FAULTY
) &&
2890 /* wait for Removal to happen */
2892 if (d
->state_fd
>= 0)
2896 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
2897 inst
, failed
, a
->info
.array
.raid_disks
, a
->info
.array
.level
);
2898 if (imsm_check_degraded(super
, dev
, failed
) != IMSM_T_STATE_DEGRADED
)
2901 /* For each slot, if it is not working, find a spare */
2902 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
2903 for (d
= a
->info
.devs
; d
; d
= d
->next
)
2904 if (d
->disk
.raid_disk
== i
)
2906 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
2907 if (d
&& (d
->state_fd
>= 0))
2911 * OK, this device needs recovery. Try to re-add the previous
2912 * occupant of this slot, if this fails add a new spare
2914 dl
= imsm_readd(super
, i
, a
);
2916 dl
= imsm_add_spare(super
, i
, a
);
2920 /* found a usable disk with enough space */
2921 di
= malloc(sizeof(*di
));
2924 memset(di
, 0, sizeof(*di
));
2926 /* dl->index will be -1 in the case we are activating a
2927 * pristine spare. imsm_process_update() will create a
2928 * new index in this case. Once a disk is found to be
2929 * failed in all member arrays it is kicked from the
2932 di
->disk
.number
= dl
->index
;
2934 /* (ab)use di->devs to store a pointer to the device
2937 di
->devs
= (struct mdinfo
*) dl
;
2939 di
->disk
.raid_disk
= i
;
2940 di
->disk
.major
= dl
->major
;
2941 di
->disk
.minor
= dl
->minor
;
2943 di
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
2944 di
->component_size
= a
->info
.component_size
;
2945 di
->container_member
= inst
;
2949 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
2950 i
, di
->data_offset
);
2956 /* No spares found */
2958 /* Now 'rv' has a list of devices to return.
2959 * Create a metadata_update record to update the
2960 * disk_ord_tbl for the array
2962 mu
= malloc(sizeof(*mu
));
2964 mu
->buf
= malloc(sizeof(struct imsm_update_activate_spare
) * num_spares
);
2965 if (mu
->buf
== NULL
) {
2972 struct mdinfo
*n
= rv
->next
;
2981 mu
->len
= sizeof(struct imsm_update_activate_spare
) * num_spares
;
2982 mu
->next
= *updates
;
2983 u
= (struct imsm_update_activate_spare
*) mu
->buf
;
2985 for (di
= rv
; di
; di
= di
->next
) {
2986 u
->type
= update_activate_spare
;
2987 u
->dl
= (struct dl
*) di
->devs
;
2989 u
->slot
= di
->disk
.raid_disk
;
3000 static int disks_overlap(struct imsm_dev
*d1
, struct imsm_dev
*d2
)
3002 struct imsm_map
*m1
= get_imsm_map(d1
, 0);
3003 struct imsm_map
*m2
= get_imsm_map(d2
, 0);
3008 for (i
= 0; i
< m1
->num_members
; i
++) {
3009 idx
= get_imsm_disk_idx(d1
, i
);
3010 for (j
= 0; j
< m2
->num_members
; j
++)
3011 if (idx
== get_imsm_disk_idx(d2
, j
))
3018 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, int index
);
3020 static void imsm_process_update(struct supertype
*st
,
3021 struct metadata_update
*update
)
3024 * crack open the metadata_update envelope to find the update record
3025 * update can be one of:
3026 * update_activate_spare - a spare device has replaced a failed
3027 * device in an array, update the disk_ord_tbl. If this disk is
3028 * present in all member arrays then also clear the SPARE_DISK
3031 struct intel_super
*super
= st
->sb
;
3032 struct imsm_super
*mpb
;
3033 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
3035 /* update requires a larger buf but the allocation failed */
3036 if (super
->next_len
&& !super
->next_buf
) {
3037 super
->next_len
= 0;
3041 if (super
->next_buf
) {
3042 memcpy(super
->next_buf
, super
->buf
, super
->len
);
3044 super
->len
= super
->next_len
;
3045 super
->buf
= super
->next_buf
;
3047 super
->next_len
= 0;
3048 super
->next_buf
= NULL
;
3051 mpb
= super
->anchor
;
3054 case update_activate_spare
: {
3055 struct imsm_update_activate_spare
*u
= (void *) update
->buf
;
3056 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->array
);
3057 struct imsm_map
*map
= get_imsm_map(dev
, 0);
3058 struct imsm_map
*migr_map
;
3059 struct active_array
*a
;
3060 struct imsm_disk
*disk
;
3066 int victim
= get_imsm_disk_idx(dev
, u
->slot
);
3069 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
3074 fprintf(stderr
, "error: imsm_activate_spare passed "
3075 "an unknown disk (index: %d)\n",
3080 super
->updates_pending
++;
3082 /* count failures (excluding rebuilds and the victim)
3083 * to determine map[0] state
3086 for (i
= 0; i
< map
->num_members
; i
++) {
3089 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
));
3091 __le32_to_cpu(disk
->status
) & FAILED_DISK
)
3095 /* adding a pristine spare, assign a new index */
3096 if (dl
->index
< 0) {
3097 dl
->index
= super
->anchor
->num_disks
;
3098 super
->anchor
->num_disks
++;
3101 status
= __le32_to_cpu(disk
->status
);
3102 status
|= CONFIGURED_DISK
;
3103 status
&= ~SPARE_DISK
;
3104 disk
->status
= __cpu_to_le32(status
);
3107 to_state
= imsm_check_degraded(super
, dev
, failed
);
3108 map
->map_state
= IMSM_T_STATE_DEGRADED
;
3109 migrate(dev
, to_state
, 1);
3110 migr_map
= get_imsm_map(dev
, 1);
3111 set_imsm_ord_tbl_ent(map
, u
->slot
, dl
->index
);
3112 set_imsm_ord_tbl_ent(migr_map
, u
->slot
, dl
->index
| IMSM_ORD_REBUILD
);
3114 /* count arrays using the victim in the metadata */
3116 for (a
= st
->arrays
; a
; a
= a
->next
) {
3117 dev
= get_imsm_dev(super
, a
->info
.container_member
);
3118 for (i
= 0; i
< map
->num_members
; i
++)
3119 if (victim
== get_imsm_disk_idx(dev
, i
))
3123 /* delete the victim if it is no longer being
3129 /* We know that 'manager' isn't touching anything,
3130 * so it is safe to delete
3132 for (dlp
= &super
->disks
; *dlp
; dlp
= &(*dlp
)->next
)
3133 if ((*dlp
)->index
== victim
)
3136 /* victim may be on the missing list */
3138 for (dlp
= &super
->missing
; *dlp
; dlp
= &(*dlp
)->next
)
3139 if ((*dlp
)->index
== victim
)
3141 imsm_delete(super
, dlp
, victim
);
3145 case update_create_array
: {
3146 /* someone wants to create a new array, we need to be aware of
3147 * a few races/collisions:
3148 * 1/ 'Create' called by two separate instances of mdadm
3149 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
3150 * devices that have since been assimilated via
3152 * In the event this update can not be carried out mdadm will
3153 * (FIX ME) notice that its update did not take hold.
3155 struct imsm_update_create_array
*u
= (void *) update
->buf
;
3156 struct imsm_dev
*dev
;
3157 struct imsm_map
*map
, *new_map
;
3158 unsigned long long start
, end
;
3159 unsigned long long new_start
, new_end
;
3163 /* handle racing creates: first come first serve */
3164 if (u
->dev_idx
< mpb
->num_raid_devs
) {
3165 dprintf("%s: subarray %d already defined\n",
3166 __func__
, u
->dev_idx
);
3170 /* check update is next in sequence */
3171 if (u
->dev_idx
!= mpb
->num_raid_devs
) {
3172 dprintf("%s: can not create array %d expected index %d\n",
3173 __func__
, u
->dev_idx
, mpb
->num_raid_devs
);
3177 new_map
= get_imsm_map(&u
->dev
, 0);
3178 new_start
= __le32_to_cpu(new_map
->pba_of_lba0
);
3179 new_end
= new_start
+ __le32_to_cpu(new_map
->blocks_per_member
);
3181 /* handle activate_spare versus create race:
3182 * check to make sure that overlapping arrays do not include
3185 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
3186 dev
= get_imsm_dev(super
, i
);
3187 map
= get_imsm_map(dev
, 0);
3188 start
= __le32_to_cpu(map
->pba_of_lba0
);
3189 end
= start
+ __le32_to_cpu(map
->blocks_per_member
);
3190 if ((new_start
>= start
&& new_start
<= end
) ||
3191 (start
>= new_start
&& start
<= new_end
))
3193 if (overlap
&& disks_overlap(dev
, &u
->dev
)) {
3194 dprintf("%s: arrays overlap\n", __func__
);
3198 /* check num_members sanity */
3199 if (new_map
->num_members
> mpb
->num_disks
) {
3200 dprintf("%s: num_disks out of range\n", __func__
);
3204 /* check that prepare update was successful */
3205 if (!update
->space
) {
3206 dprintf("%s: prepare update failed\n", __func__
);
3210 super
->updates_pending
++;
3211 dev
= update
->space
;
3212 map
= get_imsm_map(dev
, 0);
3213 update
->space
= NULL
;
3214 imsm_copy_dev(dev
, &u
->dev
);
3215 map
= get_imsm_map(dev
, 0);
3216 super
->dev_tbl
[u
->dev_idx
] = dev
;
3217 mpb
->num_raid_devs
++;
3220 for (i
= 0; i
< map
->num_members
; i
++) {
3221 struct imsm_disk
*disk
;
3224 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
));
3225 status
= __le32_to_cpu(disk
->status
);
3226 status
|= CONFIGURED_DISK
;
3227 status
&= ~SPARE_DISK
;
3228 disk
->status
= __cpu_to_le32(status
);
3232 case update_add_disk
:
3234 /* we may be able to repair some arrays if disks are
3237 struct active_array
*a
;
3239 super
->updates_pending
++;
3240 for (a
= st
->arrays
; a
; a
= a
->next
)
3241 a
->check_degraded
= 1;
3243 /* add some spares to the metadata */
3244 while (super
->add
) {
3248 super
->add
= al
->next
;
3249 al
->next
= super
->disks
;
3251 dprintf("%s: added %x:%x\n",
3252 __func__
, al
->major
, al
->minor
);
3259 static void imsm_prepare_update(struct supertype
*st
,
3260 struct metadata_update
*update
)
3263 * Allocate space to hold new disk entries, raid-device entries or a new
3264 * mpb if necessary. The manager synchronously waits for updates to
3265 * complete in the monitor, so new mpb buffers allocated here can be
3266 * integrated by the monitor thread without worrying about live pointers
3267 * in the manager thread.
3269 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
3270 struct intel_super
*super
= st
->sb
;
3271 struct imsm_super
*mpb
= super
->anchor
;
3276 case update_create_array
: {
3277 struct imsm_update_create_array
*u
= (void *) update
->buf
;
3279 len
= sizeof_imsm_dev(&u
->dev
, 1);
3280 update
->space
= malloc(len
);
3287 /* check if we need a larger metadata buffer */
3288 if (super
->next_buf
)
3289 buf_len
= super
->next_len
;
3291 buf_len
= super
->len
;
3293 if (__le32_to_cpu(mpb
->mpb_size
) + len
> buf_len
) {
3294 /* ok we need a larger buf than what is currently allocated
3295 * if this allocation fails process_update will notice that
3296 * ->next_len is set and ->next_buf is NULL
3298 buf_len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + len
, 512);
3299 if (super
->next_buf
)
3300 free(super
->next_buf
);
3302 super
->next_len
= buf_len
;
3303 if (posix_memalign(&super
->next_buf
, buf_len
, 512) != 0)
3304 super
->next_buf
= NULL
;
3308 /* must be called while manager is quiesced */
3309 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, int index
)
3311 struct imsm_super
*mpb
= super
->anchor
;
3313 struct imsm_dev
*dev
;
3314 struct imsm_map
*map
;
3315 int i
, j
, num_members
;
3318 dprintf("%s: deleting device[%d] from imsm_super\n",
3321 /* shift all indexes down one */
3322 for (iter
= super
->disks
; iter
; iter
= iter
->next
)
3323 if (iter
->index
> index
)
3325 for (iter
= super
->missing
; iter
; iter
= iter
->next
)
3326 if (iter
->index
> index
)
3329 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
3330 dev
= get_imsm_dev(super
, i
);
3331 map
= get_imsm_map(dev
, 0);
3332 num_members
= map
->num_members
;
3333 for (j
= 0; j
< num_members
; j
++) {
3334 /* update ord entries being careful not to propagate
3335 * ord-flags to the first map
3337 ord
= get_imsm_ord_tbl_ent(dev
, j
);
3339 if (ord_to_idx(ord
) <= index
)
3342 map
= get_imsm_map(dev
, 0);
3343 set_imsm_ord_tbl_ent(map
, j
, ord_to_idx(ord
- 1));
3344 map
= get_imsm_map(dev
, 1);
3346 set_imsm_ord_tbl_ent(map
, j
, ord
- 1);
3351 super
->updates_pending
++;
3353 struct dl
*dl
= *dlp
;
3355 *dlp
= (*dlp
)->next
;
3356 __free_imsm_disk(dl
);
3359 #endif /* MDASSEMBLE */
3361 struct superswitch super_imsm
= {
3363 .examine_super
= examine_super_imsm
,
3364 .brief_examine_super
= brief_examine_super_imsm
,
3365 .detail_super
= detail_super_imsm
,
3366 .brief_detail_super
= brief_detail_super_imsm
,
3367 .write_init_super
= write_init_super_imsm
,
3368 .validate_geometry
= validate_geometry_imsm
,
3369 .add_to_super
= add_to_super_imsm
,
3371 .match_home
= match_home_imsm
,
3372 .uuid_from_super
= uuid_from_super_imsm
,
3373 .getinfo_super
= getinfo_super_imsm
,
3374 .update_super
= update_super_imsm
,
3376 .avail_size
= avail_size_imsm
,
3378 .compare_super
= compare_super_imsm
,
3380 .load_super
= load_super_imsm
,
3381 .init_super
= init_super_imsm
,
3382 .store_super
= store_zero_imsm
,
3383 .free_super
= free_super_imsm
,
3384 .match_metadata_desc
= match_metadata_desc_imsm
,
3385 .container_content
= container_content_imsm
,
3391 .open_new
= imsm_open_new
,
3392 .load_super
= load_super_imsm
,
3393 .set_array_state
= imsm_set_array_state
,
3394 .set_disk
= imsm_set_disk
,
3395 .sync_metadata
= imsm_sync_metadata
,
3396 .activate_spare
= imsm_activate_spare
,
3397 .process_update
= imsm_process_update
,
3398 .prepare_update
= imsm_prepare_update
,
3399 #endif /* MDASSEMBLE */