2 * mdadm - Intel(R) Matrix Storage Manager Support
4 * Copyright (C) 2002-2008 Intel Corporation
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
20 #define HAVE_STDINT_H 1
24 #include "platform-intel.h"
30 /* MPB == Metadata Parameter Block */
31 #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
32 #define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
33 #define MPB_VERSION_RAID0 "1.0.00"
34 #define MPB_VERSION_RAID1 "1.1.00"
35 #define MPB_VERSION_MANY_VOLUMES_PER_ARRAY "1.2.00"
36 #define MPB_VERSION_3OR4_DISK_ARRAY "1.2.01"
37 #define MPB_VERSION_RAID5 "1.2.02"
38 #define MPB_VERSION_5OR6_DISK_ARRAY "1.2.04"
39 #define MPB_VERSION_CNG "1.2.06"
40 #define MPB_VERSION_ATTRIBS "1.3.00"
41 #define MAX_SIGNATURE_LENGTH 32
42 #define MAX_RAID_SERIAL_LEN 16
44 #define MPB_ATTRIB_CHECKSUM_VERIFY __cpu_to_le32(0x80000000)
45 #define MPB_ATTRIB_PM __cpu_to_le32(0x40000000)
46 #define MPB_ATTRIB_2TB __cpu_to_le32(0x20000000)
47 #define MPB_ATTRIB_RAID0 __cpu_to_le32(0x00000001)
48 #define MPB_ATTRIB_RAID1 __cpu_to_le32(0x00000002)
49 #define MPB_ATTRIB_RAID10 __cpu_to_le32(0x00000004)
50 #define MPB_ATTRIB_RAID1E __cpu_to_le32(0x00000008)
51 #define MPB_ATTRIB_RAID5 __cpu_to_le32(0x00000010)
52 #define MPB_ATTRIB_RAIDCNG __cpu_to_le32(0x00000020)
54 #define MPB_SECTOR_CNT 418
55 #define IMSM_RESERVED_SECTORS 4096
56 #define SECT_PER_MB_SHIFT 11
58 /* Disk configuration info. */
59 #define IMSM_MAX_DEVICES 255
61 __u8 serial
[MAX_RAID_SERIAL_LEN
];/* 0xD8 - 0xE7 ascii serial number */
62 __u32 total_blocks
; /* 0xE8 - 0xEB total blocks */
63 __u32 scsi_id
; /* 0xEC - 0xEF scsi ID */
64 #define SPARE_DISK __cpu_to_le32(0x01) /* Spare */
65 #define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */
66 #define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */
67 __u32 status
; /* 0xF0 - 0xF3 */
68 __u32 owner_cfg_num
; /* which config 0,1,2... owns this disk */
69 #define IMSM_DISK_FILLERS 4
70 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */
73 /* RAID map configuration infos. */
75 __u32 pba_of_lba0
; /* start address of partition */
76 __u32 blocks_per_member
;/* blocks per member */
77 __u32 num_data_stripes
; /* number of data stripes */
78 __u16 blocks_per_strip
;
79 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
80 #define IMSM_T_STATE_NORMAL 0
81 #define IMSM_T_STATE_UNINITIALIZED 1
82 #define IMSM_T_STATE_DEGRADED 2
83 #define IMSM_T_STATE_FAILED 3
85 #define IMSM_T_RAID0 0
86 #define IMSM_T_RAID1 1
87 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
88 __u8 num_members
; /* number of member disks */
89 __u8 num_domains
; /* number of parity domains */
90 __u8 failed_disk_num
; /* valid only when state is degraded */
92 __u32 filler
[7]; /* expansion area */
93 #define IMSM_ORD_REBUILD (1 << 24)
94 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
95 * top byte contains some flags
97 } __attribute__ ((packed
));
100 __u32 curr_migr_unit
;
101 __u32 checkpoint_id
; /* id to access curr_migr_unit */
102 __u8 migr_state
; /* Normal or Migrating */
104 #define MIGR_REBUILD 1
105 #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */
106 #define MIGR_GEN_MIGR 3
107 #define MIGR_STATE_CHANGE 4
108 #define MIGR_REPAIR 5
109 __u8 migr_type
; /* Initializing, Rebuilding, ... */
111 __u8 fs_state
; /* fast-sync state for CnG (0xff == disabled) */
112 __u16 verify_errors
; /* number of mismatches */
113 __u16 bad_blocks
; /* number of bad blocks during verify */
115 struct imsm_map map
[1];
116 /* here comes another one if migr_state */
117 } __attribute__ ((packed
));
120 __u8 volume
[MAX_RAID_SERIAL_LEN
];
123 #define DEV_BOOTABLE __cpu_to_le32(0x01)
124 #define DEV_BOOT_DEVICE __cpu_to_le32(0x02)
125 #define DEV_READ_COALESCING __cpu_to_le32(0x04)
126 #define DEV_WRITE_COALESCING __cpu_to_le32(0x08)
127 #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10)
128 #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20)
129 #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40)
130 #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80)
131 #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100)
132 #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200)
133 #define DEV_CLONE_N_GO __cpu_to_le32(0x400)
134 #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800)
135 #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000)
136 __u32 status
; /* Persistent RaidDev status */
137 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
141 __u8 cng_master_disk
;
145 #define IMSM_DEV_FILLERS 10
146 __u32 filler
[IMSM_DEV_FILLERS
];
148 } __attribute__ ((packed
));
151 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
152 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
153 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
154 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
155 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
156 __u32 error_log_size
; /* 0x30 - 0x33 in bytes */
157 __u32 attributes
; /* 0x34 - 0x37 */
158 __u8 num_disks
; /* 0x38 Number of configured disks */
159 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
160 __u8 error_log_pos
; /* 0x3A */
161 __u8 fill
[1]; /* 0x3B */
162 __u32 cache_size
; /* 0x3c - 0x40 in mb */
163 __u32 orig_family_num
; /* 0x40 - 0x43 original family num */
164 __u32 pwr_cycle_count
; /* 0x44 - 0x47 simulated power cycle count for array */
165 __u32 bbm_log_size
; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */
166 #define IMSM_FILLERS 35
167 __u32 filler
[IMSM_FILLERS
]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */
168 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
169 /* here comes imsm_dev[num_raid_devs] */
170 /* here comes BBM logs */
171 } __attribute__ ((packed
));
173 #define BBM_LOG_MAX_ENTRIES 254
175 struct bbm_log_entry
{
176 __u64 defective_block_start
;
177 #define UNREADABLE 0xFFFFFFFF
178 __u32 spare_block_offset
;
179 __u16 remapped_marked_count
;
181 } __attribute__ ((__packed__
));
184 __u32 signature
; /* 0xABADB10C */
186 __u32 reserved_spare_block_count
; /* 0 */
187 __u32 reserved
; /* 0xFFFF */
188 __u64 first_spare_lba
;
189 struct bbm_log_entry mapped_block_entries
[BBM_LOG_MAX_ENTRIES
];
190 } __attribute__ ((__packed__
));
194 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
197 static __u8
migr_type(struct imsm_dev
*dev
)
199 if (dev
->vol
.migr_type
== MIGR_VERIFY
&&
200 dev
->status
& DEV_VERIFY_AND_FIX
)
203 return dev
->vol
.migr_type
;
206 static void set_migr_type(struct imsm_dev
*dev
, __u8 migr_type
)
208 /* for compatibility with older oroms convert MIGR_REPAIR, into
209 * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status
211 if (migr_type
== MIGR_REPAIR
) {
212 dev
->vol
.migr_type
= MIGR_VERIFY
;
213 dev
->status
|= DEV_VERIFY_AND_FIX
;
215 dev
->vol
.migr_type
= migr_type
;
216 dev
->status
&= ~DEV_VERIFY_AND_FIX
;
220 static unsigned int sector_count(__u32 bytes
)
222 return ((bytes
+ (512-1)) & (~(512-1))) / 512;
225 static unsigned int mpb_sectors(struct imsm_super
*mpb
)
227 return sector_count(__le32_to_cpu(mpb
->mpb_size
));
231 struct imsm_dev
*dev
;
232 struct intel_dev
*next
;
236 /* internal representation of IMSM metadata */
239 void *buf
; /* O_DIRECT buffer for reading/writing metadata */
240 struct imsm_super
*anchor
; /* immovable parameters */
242 size_t len
; /* size of the 'buf' allocation */
243 void *next_buf
; /* for realloc'ing buf from the manager */
245 int updates_pending
; /* count of pending updates for mdmon */
246 int creating_imsm
; /* flag to indicate container creation */
247 int current_vol
; /* index of raid device undergoing creation */
248 __u32 create_offset
; /* common start for 'current_vol' */
249 __u32 random
; /* random data for seeding new family numbers */
250 struct intel_dev
*devlist
;
254 __u8 serial
[MAX_RAID_SERIAL_LEN
];
257 struct imsm_disk disk
;
260 struct extent
*e
; /* for determining freespace @ create */
261 int raiddisk
; /* slot to fill in autolayout */
263 struct dl
*add
; /* list of disks to add while mdmon active */
264 struct dl
*missing
; /* disks removed while we weren't looking */
265 struct bbm_log
*bbm_log
;
266 const char *hba
; /* device path of the raid controller for this metadata */
267 const struct imsm_orom
*orom
; /* platform firmware support */
268 struct intel_super
*next
; /* (temp) list for disambiguating family_num */
272 struct imsm_disk disk
;
273 #define IMSM_UNKNOWN_OWNER (-1)
275 struct intel_disk
*next
;
279 unsigned long long start
, size
;
282 /* definition of messages passed to imsm_process_update */
283 enum imsm_update_type
{
284 update_activate_spare
,
289 struct imsm_update_activate_spare
{
290 enum imsm_update_type type
;
294 struct imsm_update_activate_spare
*next
;
298 __u8 serial
[MAX_RAID_SERIAL_LEN
];
301 struct imsm_update_create_array
{
302 enum imsm_update_type type
;
307 struct imsm_update_add_disk
{
308 enum imsm_update_type type
;
311 static struct supertype
*match_metadata_desc_imsm(char *arg
)
313 struct supertype
*st
;
315 if (strcmp(arg
, "imsm") != 0 &&
316 strcmp(arg
, "default") != 0
320 st
= malloc(sizeof(*st
));
321 memset(st
, 0, sizeof(*st
));
322 st
->ss
= &super_imsm
;
323 st
->max_devs
= IMSM_MAX_DEVICES
;
324 st
->minor_version
= 0;
330 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
332 return &mpb
->sig
[MPB_SIG_LEN
];
336 /* retrieve a disk directly from the anchor when the anchor is known to be
337 * up-to-date, currently only at load time
339 static struct imsm_disk
*__get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
341 if (index
>= mpb
->num_disks
)
343 return &mpb
->disk
[index
];
347 /* retrieve a disk from the parsed metadata */
348 static struct imsm_disk
*get_imsm_disk(struct intel_super
*super
, __u8 index
)
352 for (d
= super
->disks
; d
; d
= d
->next
)
353 if (d
->index
== index
)
360 /* generate a checksum directly from the anchor when the anchor is known to be
361 * up-to-date, currently only at load or write_super after coalescing
363 static __u32
__gen_imsm_checksum(struct imsm_super
*mpb
)
365 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
366 __u32
*p
= (__u32
*) mpb
;
370 sum
+= __le32_to_cpu(*p
);
374 return sum
- __le32_to_cpu(mpb
->check_sum
);
377 static size_t sizeof_imsm_map(struct imsm_map
*map
)
379 return sizeof(struct imsm_map
) + sizeof(__u32
) * (map
->num_members
- 1);
382 struct imsm_map
*get_imsm_map(struct imsm_dev
*dev
, int second_map
)
384 struct imsm_map
*map
= &dev
->vol
.map
[0];
386 if (second_map
&& !dev
->vol
.migr_state
)
388 else if (second_map
) {
391 return ptr
+ sizeof_imsm_map(map
);
397 /* return the size of the device.
398 * migr_state increases the returned size if map[0] were to be duplicated
400 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
, int migr_state
)
402 size_t size
= sizeof(*dev
) - sizeof(struct imsm_map
) +
403 sizeof_imsm_map(get_imsm_map(dev
, 0));
405 /* migrating means an additional map */
406 if (dev
->vol
.migr_state
)
407 size
+= sizeof_imsm_map(get_imsm_map(dev
, 1));
409 size
+= sizeof_imsm_map(get_imsm_map(dev
, 0));
415 /* retrieve disk serial number list from a metadata update */
416 static struct disk_info
*get_disk_info(struct imsm_update_create_array
*update
)
419 struct disk_info
*inf
;
421 inf
= u
+ sizeof(*update
) - sizeof(struct imsm_dev
) +
422 sizeof_imsm_dev(&update
->dev
, 0);
428 static struct imsm_dev
*__get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
434 if (index
>= mpb
->num_raid_devs
)
437 /* devices start after all disks */
438 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
440 for (i
= 0; i
<= index
; i
++)
442 return _mpb
+ offset
;
444 offset
+= sizeof_imsm_dev(_mpb
+ offset
, 0);
449 static struct imsm_dev
*get_imsm_dev(struct intel_super
*super
, __u8 index
)
451 struct intel_dev
*dv
;
453 if (index
>= super
->anchor
->num_raid_devs
)
455 for (dv
= super
->devlist
; dv
; dv
= dv
->next
)
456 if (dv
->index
== index
)
461 static __u32
get_imsm_ord_tbl_ent(struct imsm_dev
*dev
, int slot
)
463 struct imsm_map
*map
;
465 if (dev
->vol
.migr_state
)
466 map
= get_imsm_map(dev
, 1);
468 map
= get_imsm_map(dev
, 0);
470 /* top byte identifies disk under rebuild */
471 return __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
474 #define ord_to_idx(ord) (((ord) << 8) >> 8)
475 static __u32
get_imsm_disk_idx(struct imsm_dev
*dev
, int slot
)
477 __u32 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
479 return ord_to_idx(ord
);
482 static void set_imsm_ord_tbl_ent(struct imsm_map
*map
, int slot
, __u32 ord
)
484 map
->disk_ord_tbl
[slot
] = __cpu_to_le32(ord
);
487 static int get_imsm_disk_slot(struct imsm_map
*map
, int idx
)
492 for (slot
= 0; slot
< map
->num_members
; slot
++) {
493 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
494 if (ord_to_idx(ord
) == idx
)
501 static int get_imsm_raid_level(struct imsm_map
*map
)
503 if (map
->raid_level
== 1) {
504 if (map
->num_members
== 2)
510 return map
->raid_level
;
513 static int cmp_extent(const void *av
, const void *bv
)
515 const struct extent
*a
= av
;
516 const struct extent
*b
= bv
;
517 if (a
->start
< b
->start
)
519 if (a
->start
> b
->start
)
524 static int count_memberships(struct dl
*dl
, struct intel_super
*super
)
529 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
530 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
531 struct imsm_map
*map
= get_imsm_map(dev
, 0);
533 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
540 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
542 /* find a list of used extents on the given physical device */
543 struct extent
*rv
, *e
;
545 int memberships
= count_memberships(dl
, super
);
546 __u32 reservation
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
548 rv
= malloc(sizeof(struct extent
) * (memberships
+ 1));
553 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
554 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
555 struct imsm_map
*map
= get_imsm_map(dev
, 0);
557 if (get_imsm_disk_slot(map
, dl
->index
) >= 0) {
558 e
->start
= __le32_to_cpu(map
->pba_of_lba0
);
559 e
->size
= __le32_to_cpu(map
->blocks_per_member
);
563 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
565 /* determine the start of the metadata
566 * when no raid devices are defined use the default
567 * ...otherwise allow the metadata to truncate the value
568 * as is the case with older versions of imsm
571 struct extent
*last
= &rv
[memberships
- 1];
574 remainder
= __le32_to_cpu(dl
->disk
.total_blocks
) -
575 (last
->start
+ last
->size
);
576 /* round down to 1k block to satisfy precision of the kernel
580 /* make sure remainder is still sane */
581 if (remainder
< ROUND_UP(super
->len
, 512) >> 9)
582 remainder
= ROUND_UP(super
->len
, 512) >> 9;
583 if (reservation
> remainder
)
584 reservation
= remainder
;
586 e
->start
= __le32_to_cpu(dl
->disk
.total_blocks
) - reservation
;
591 /* try to determine how much space is reserved for metadata from
592 * the last get_extents() entry, otherwise fallback to the
595 static __u32
imsm_reserved_sectors(struct intel_super
*super
, struct dl
*dl
)
601 /* for spares just return a minimal reservation which will grow
602 * once the spare is picked up by an array
605 return MPB_SECTOR_CNT
;
607 e
= get_extents(super
, dl
);
609 return MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
611 /* scroll to last entry */
612 for (i
= 0; e
[i
].size
; i
++)
615 rv
= __le32_to_cpu(dl
->disk
.total_blocks
) - e
[i
].start
;
622 static int is_spare(struct imsm_disk
*disk
)
624 return (disk
->status
& SPARE_DISK
) == SPARE_DISK
;
627 static int is_configured(struct imsm_disk
*disk
)
629 return (disk
->status
& CONFIGURED_DISK
) == CONFIGURED_DISK
;
632 static int is_failed(struct imsm_disk
*disk
)
634 return (disk
->status
& FAILED_DISK
) == FAILED_DISK
;
638 static void print_imsm_dev(struct imsm_dev
*dev
, char *uuid
, int disk_idx
)
642 struct imsm_map
*map
= get_imsm_map(dev
, 0);
646 printf("[%.16s]:\n", dev
->volume
);
647 printf(" UUID : %s\n", uuid
);
648 printf(" RAID Level : %d\n", get_imsm_raid_level(map
));
649 printf(" Members : %d\n", map
->num_members
);
650 slot
= get_imsm_disk_slot(map
, disk_idx
);
652 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
653 printf(" This Slot : %d%s\n", slot
,
654 ord
& IMSM_ORD_REBUILD
? " (out-of-sync)" : "");
656 printf(" This Slot : ?\n");
657 sz
= __le32_to_cpu(dev
->size_high
);
659 sz
+= __le32_to_cpu(dev
->size_low
);
660 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
661 human_size(sz
* 512));
662 sz
= __le32_to_cpu(map
->blocks_per_member
);
663 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
664 human_size(sz
* 512));
665 printf(" Sector Offset : %u\n",
666 __le32_to_cpu(map
->pba_of_lba0
));
667 printf(" Num Stripes : %u\n",
668 __le32_to_cpu(map
->num_data_stripes
));
669 printf(" Chunk Size : %u KiB\n",
670 __le16_to_cpu(map
->blocks_per_strip
) / 2);
671 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
672 printf(" Migrate State : %s", dev
->vol
.migr_state
? "migrating" : "idle\n");
673 if (dev
->vol
.migr_state
) {
674 if (migr_type(dev
) == MIGR_INIT
)
675 printf(": initializing\n");
676 else if (migr_type(dev
) == MIGR_REBUILD
)
677 printf(": rebuilding\n");
678 else if (migr_type(dev
) == MIGR_VERIFY
)
680 else if (migr_type(dev
) == MIGR_GEN_MIGR
)
681 printf(": general migration\n");
682 else if (migr_type(dev
) == MIGR_STATE_CHANGE
)
683 printf(": state change\n");
684 else if (migr_type(dev
) == MIGR_REPAIR
)
685 printf(": repair\n");
687 printf(": <unknown:%d>\n", migr_type(dev
));
689 printf(" Map State : %s", map_state_str
[map
->map_state
]);
690 if (dev
->vol
.migr_state
) {
691 struct imsm_map
*map
= get_imsm_map(dev
, 1);
692 printf(" <-- %s", map_state_str
[map
->map_state
]);
695 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
698 static void print_imsm_disk(struct imsm_super
*mpb
, int index
, __u32 reserved
)
700 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, index
);
701 char str
[MAX_RAID_SERIAL_LEN
+ 1];
708 snprintf(str
, MAX_RAID_SERIAL_LEN
+ 1, "%s", disk
->serial
);
709 printf(" Disk%02d Serial : %s\n", index
, str
);
710 printf(" State :%s%s%s\n", is_spare(disk
) ? " spare" : "",
711 is_configured(disk
) ? " active" : "",
712 is_failed(disk
) ? " failed" : "");
713 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
714 sz
= __le32_to_cpu(disk
->total_blocks
) - reserved
;
715 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
716 human_size(sz
* 512));
719 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
);
721 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
723 struct intel_super
*super
= st
->sb
;
724 struct imsm_super
*mpb
= super
->anchor
;
725 char str
[MAX_SIGNATURE_LENGTH
];
730 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
733 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
734 printf(" Magic : %s\n", str
);
735 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
736 printf(" Version : %s\n", get_imsm_version(mpb
));
737 printf(" Orig Family : %08x\n", __le32_to_cpu(mpb
->orig_family_num
));
738 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
739 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
740 getinfo_super_imsm(st
, &info
);
741 fname_from_uuid(st
, &info
, nbuf
, ':');
742 printf(" UUID : %s\n", nbuf
+ 5);
743 sum
= __le32_to_cpu(mpb
->check_sum
);
744 printf(" Checksum : %08x %s\n", sum
,
745 __gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
746 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
));
747 printf(" Disks : %d\n", mpb
->num_disks
);
748 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
749 print_imsm_disk(mpb
, super
->disks
->index
, reserved
);
750 if (super
->bbm_log
) {
751 struct bbm_log
*log
= super
->bbm_log
;
754 printf("Bad Block Management Log:\n");
755 printf(" Log Size : %d\n", __le32_to_cpu(mpb
->bbm_log_size
));
756 printf(" Signature : %x\n", __le32_to_cpu(log
->signature
));
757 printf(" Entry Count : %d\n", __le32_to_cpu(log
->entry_count
));
758 printf(" Spare Blocks : %d\n", __le32_to_cpu(log
->reserved_spare_block_count
));
759 printf(" First Spare : %llx\n",
760 (unsigned long long) __le64_to_cpu(log
->first_spare_lba
));
762 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
764 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
766 super
->current_vol
= i
;
767 getinfo_super_imsm(st
, &info
);
768 fname_from_uuid(st
, &info
, nbuf
, ':');
769 print_imsm_dev(dev
, nbuf
+ 5, super
->disks
->index
);
771 for (i
= 0; i
< mpb
->num_disks
; i
++) {
772 if (i
== super
->disks
->index
)
774 print_imsm_disk(mpb
, i
, reserved
);
778 static void brief_examine_super_imsm(struct supertype
*st
, int verbose
)
780 /* We just write a generic IMSM ARRAY entry */
783 struct intel_super
*super
= st
->sb
;
785 if (!super
->anchor
->num_raid_devs
) {
786 printf("ARRAY metadata=imsm\n");
790 getinfo_super_imsm(st
, &info
);
791 fname_from_uuid(st
, &info
, nbuf
, ':');
792 printf("ARRAY metadata=imsm UUID=%s\n", nbuf
+ 5);
795 static void brief_examine_subarrays_imsm(struct supertype
*st
, int verbose
)
797 /* We just write a generic IMSM ARRAY entry */
801 struct intel_super
*super
= st
->sb
;
804 if (!super
->anchor
->num_raid_devs
)
807 getinfo_super_imsm(st
, &info
);
808 fname_from_uuid(st
, &info
, nbuf
, ':');
809 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
810 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
812 super
->current_vol
= i
;
813 getinfo_super_imsm(st
, &info
);
814 fname_from_uuid(st
, &info
, nbuf1
, ':');
815 printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n",
816 dev
->volume
, nbuf
+ 5, i
, nbuf1
+ 5);
820 static void export_examine_super_imsm(struct supertype
*st
)
822 struct intel_super
*super
= st
->sb
;
823 struct imsm_super
*mpb
= super
->anchor
;
827 getinfo_super_imsm(st
, &info
);
828 fname_from_uuid(st
, &info
, nbuf
, ':');
829 printf("MD_METADATA=imsm\n");
830 printf("MD_LEVEL=container\n");
831 printf("MD_UUID=%s\n", nbuf
+5);
832 printf("MD_DEVICES=%u\n", mpb
->num_disks
);
835 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
840 getinfo_super_imsm(st
, &info
);
841 fname_from_uuid(st
, &info
, nbuf
, ':');
842 printf("\n UUID : %s\n", nbuf
+ 5);
845 static void brief_detail_super_imsm(struct supertype
*st
)
849 getinfo_super_imsm(st
, &info
);
850 fname_from_uuid(st
, &info
, nbuf
, ':');
851 printf(" UUID=%s", nbuf
+ 5);
854 static int imsm_read_serial(int fd
, char *devname
, __u8
*serial
);
855 static void fd2devname(int fd
, char *name
);
857 static int imsm_enumerate_ports(const char *hba_path
, int port_count
, int host_base
, int verbose
)
859 /* dump an unsorted list of devices attached to ahci, as well as
860 * non-connected ports
862 int hba_len
= strlen(hba_path
) + 1;
867 unsigned long port_mask
= (1 << port_count
) - 1;
869 if (port_count
> sizeof(port_mask
) * 8) {
871 fprintf(stderr
, Name
": port_count %d out of range\n", port_count
);
875 /* scroll through /sys/dev/block looking for devices attached to
878 dir
= opendir("/sys/dev/block");
879 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
890 if (sscanf(ent
->d_name
, "%d:%d", &major
, &minor
) != 2)
892 path
= devt_to_devpath(makedev(major
, minor
));
895 if (!path_attached_to_hba(path
, hba_path
)) {
901 /* retrieve the scsi device type */
902 if (asprintf(&device
, "/sys/dev/block/%d:%d/device/xxxxxxx", major
, minor
) < 0) {
904 fprintf(stderr
, Name
": failed to allocate 'device'\n");
908 sprintf(device
, "/sys/dev/block/%d:%d/device/type", major
, minor
);
909 if (load_sys(device
, buf
) != 0) {
911 fprintf(stderr
, Name
": failed to read device type for %s\n",
917 type
= strtoul(buf
, NULL
, 10);
919 /* if it's not a disk print the vendor and model */
920 if (!(type
== 0 || type
== 7 || type
== 14)) {
923 sprintf(device
, "/sys/dev/block/%d:%d/device/vendor", major
, minor
);
924 if (load_sys(device
, buf
) == 0) {
925 strncpy(vendor
, buf
, sizeof(vendor
));
926 vendor
[sizeof(vendor
) - 1] = '\0';
927 c
= (char *) &vendor
[sizeof(vendor
) - 1];
928 while (isspace(*c
) || *c
== '\0')
932 sprintf(device
, "/sys/dev/block/%d:%d/device/model", major
, minor
);
933 if (load_sys(device
, buf
) == 0) {
934 strncpy(model
, buf
, sizeof(model
));
935 model
[sizeof(model
) - 1] = '\0';
936 c
= (char *) &model
[sizeof(model
) - 1];
937 while (isspace(*c
) || *c
== '\0')
941 if (vendor
[0] && model
[0])
942 sprintf(buf
, "%.64s %.64s", vendor
, model
);
944 switch (type
) { /* numbers from hald/linux/device.c */
945 case 1: sprintf(buf
, "tape"); break;
946 case 2: sprintf(buf
, "printer"); break;
947 case 3: sprintf(buf
, "processor"); break;
949 case 5: sprintf(buf
, "cdrom"); break;
950 case 6: sprintf(buf
, "scanner"); break;
951 case 8: sprintf(buf
, "media_changer"); break;
952 case 9: sprintf(buf
, "comm"); break;
953 case 12: sprintf(buf
, "raid"); break;
954 default: sprintf(buf
, "unknown");
960 /* chop device path to 'host%d' and calculate the port number */
961 c
= strchr(&path
[hba_len
], '/');
963 if (sscanf(&path
[hba_len
], "host%d", &port
) == 1)
967 *c
= '/'; /* repair the full string */
968 fprintf(stderr
, Name
": failed to determine port number for %s\n",
975 /* mark this port as used */
976 port_mask
&= ~(1 << port
);
978 /* print out the device information */
980 printf(" Port%d : - non-disk device (%s) -\n", port
, buf
);
984 fd
= dev_open(ent
->d_name
, O_RDONLY
);
986 printf(" Port%d : - disk info unavailable -\n", port
);
989 printf(" Port%d : %s", port
, buf
);
990 if (imsm_read_serial(fd
, NULL
, (__u8
*) buf
) == 0)
991 printf(" (%s)\n", buf
);
1006 for (i
= 0; i
< port_count
; i
++)
1007 if (port_mask
& (1 << i
))
1008 printf(" Port%d : - no device attached -\n", i
);
1014 static int detail_platform_imsm(int verbose
, int enumerate_only
)
1016 /* There are two components to imsm platform support, the ahci SATA
1017 * controller and the option-rom. To find the SATA controller we
1018 * simply look in /sys/bus/pci/drivers/ahci to see if an ahci
1019 * controller with the Intel vendor id is present. This approach
1020 * allows mdadm to leverage the kernel's ahci detection logic, with the
1021 * caveat that if ahci.ko is not loaded mdadm will not be able to
1022 * detect platform raid capabilities. The option-rom resides in a
1023 * platform "Adapter ROM". We scan for its signature to retrieve the
1024 * platform capabilities. If raid support is disabled in the BIOS the
1025 * option-rom capability structure will not be available.
1027 const struct imsm_orom
*orom
;
1028 struct sys_dev
*list
, *hba
;
1031 const char *hba_path
;
1035 if (enumerate_only
) {
1036 if (check_env("IMSM_NO_PLATFORM") || find_imsm_orom())
1041 list
= find_driver_devices("pci", "ahci");
1042 for (hba
= list
; hba
; hba
= hba
->next
)
1043 if (devpath_to_vendor(hba
->path
) == 0x8086)
1048 fprintf(stderr
, Name
": unable to find active ahci controller\n");
1049 free_sys_dev(&list
);
1052 fprintf(stderr
, Name
": found Intel SATA AHCI Controller\n");
1053 hba_path
= hba
->path
;
1055 free_sys_dev(&list
);
1057 orom
= find_imsm_orom();
1060 fprintf(stderr
, Name
": imsm option-rom not found\n");
1064 printf(" Platform : Intel(R) Matrix Storage Manager\n");
1065 printf(" Version : %d.%d.%d.%d\n", orom
->major_ver
, orom
->minor_ver
,
1066 orom
->hotfix_ver
, orom
->build
);
1067 printf(" RAID Levels :%s%s%s%s%s\n",
1068 imsm_orom_has_raid0(orom
) ? " raid0" : "",
1069 imsm_orom_has_raid1(orom
) ? " raid1" : "",
1070 imsm_orom_has_raid1e(orom
) ? " raid1e" : "",
1071 imsm_orom_has_raid10(orom
) ? " raid10" : "",
1072 imsm_orom_has_raid5(orom
) ? " raid5" : "");
1073 printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
1074 imsm_orom_has_chunk(orom
, 2) ? " 2k" : "",
1075 imsm_orom_has_chunk(orom
, 4) ? " 4k" : "",
1076 imsm_orom_has_chunk(orom
, 8) ? " 8k" : "",
1077 imsm_orom_has_chunk(orom
, 16) ? " 16k" : "",
1078 imsm_orom_has_chunk(orom
, 32) ? " 32k" : "",
1079 imsm_orom_has_chunk(orom
, 64) ? " 64k" : "",
1080 imsm_orom_has_chunk(orom
, 128) ? " 128k" : "",
1081 imsm_orom_has_chunk(orom
, 256) ? " 256k" : "",
1082 imsm_orom_has_chunk(orom
, 512) ? " 512k" : "",
1083 imsm_orom_has_chunk(orom
, 1024*1) ? " 1M" : "",
1084 imsm_orom_has_chunk(orom
, 1024*2) ? " 2M" : "",
1085 imsm_orom_has_chunk(orom
, 1024*4) ? " 4M" : "",
1086 imsm_orom_has_chunk(orom
, 1024*8) ? " 8M" : "",
1087 imsm_orom_has_chunk(orom
, 1024*16) ? " 16M" : "",
1088 imsm_orom_has_chunk(orom
, 1024*32) ? " 32M" : "",
1089 imsm_orom_has_chunk(orom
, 1024*64) ? " 64M" : "");
1090 printf(" Max Disks : %d\n", orom
->tds
);
1091 printf(" Max Volumes : %d\n", orom
->vpa
);
1092 printf(" I/O Controller : %s\n", hba_path
);
1094 /* find the smallest scsi host number to determine a port number base */
1095 dir
= opendir(hba_path
);
1096 for (ent
= dir
? readdir(dir
) : NULL
; ent
; ent
= readdir(dir
)) {
1099 if (sscanf(ent
->d_name
, "host%d", &host
) != 1)
1101 if (port_count
== 0)
1103 else if (host
< host_base
)
1106 if (host
+ 1 > port_count
+ host_base
)
1107 port_count
= host
+ 1 - host_base
;
1113 if (!port_count
|| imsm_enumerate_ports(hba_path
, port_count
,
1114 host_base
, verbose
) != 0) {
1116 fprintf(stderr
, Name
": failed to enumerate ports\n");
1124 static int match_home_imsm(struct supertype
*st
, char *homehost
)
1126 /* the imsm metadata format does not specify any host
1127 * identification information. We return -1 since we can never
1128 * confirm nor deny whether a given array is "meant" for this
1129 * host. We rely on compare_super and the 'family_num' fields to
1130 * exclude member disks that do not belong, and we rely on
1131 * mdadm.conf to specify the arrays that should be assembled.
1132 * Auto-assembly may still pick up "foreign" arrays.
1138 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
1140 /* The uuid returned here is used for:
1141 * uuid to put into bitmap file (Create, Grow)
1142 * uuid for backup header when saving critical section (Grow)
1143 * comparing uuids when re-adding a device into an array
1144 * In these cases the uuid required is that of the data-array,
1145 * not the device-set.
1146 * uuid to recognise same set when adding a missing device back
1147 * to an array. This is a uuid for the device-set.
1149 * For each of these we can make do with a truncated
1150 * or hashed uuid rather than the original, as long as
1152 * In each case the uuid required is that of the data-array,
1153 * not the device-set.
1155 /* imsm does not track uuid's so we synthesis one using sha1 on
1156 * - The signature (Which is constant for all imsm array, but no matter)
1157 * - the orig_family_num of the container
1158 * - the index number of the volume
1159 * - the 'serial' number of the volume.
1160 * Hopefully these are all constant.
1162 struct intel_super
*super
= st
->sb
;
1165 struct sha1_ctx ctx
;
1166 struct imsm_dev
*dev
= NULL
;
1169 /* some mdadm versions failed to set ->orig_family_num, in which
1170 * case fall back to ->family_num. orig_family_num will be
1171 * fixed up with the first metadata update.
1173 family_num
= super
->anchor
->orig_family_num
;
1174 if (family_num
== 0)
1175 family_num
= super
->anchor
->family_num
;
1176 sha1_init_ctx(&ctx
);
1177 sha1_process_bytes(super
->anchor
->sig
, MPB_SIG_LEN
, &ctx
);
1178 sha1_process_bytes(&family_num
, sizeof(__u32
), &ctx
);
1179 if (super
->current_vol
>= 0)
1180 dev
= get_imsm_dev(super
, super
->current_vol
);
1182 __u32 vol
= super
->current_vol
;
1183 sha1_process_bytes(&vol
, sizeof(vol
), &ctx
);
1184 sha1_process_bytes(dev
->volume
, MAX_RAID_SERIAL_LEN
, &ctx
);
1186 sha1_finish_ctx(&ctx
, buf
);
1187 memcpy(uuid
, buf
, 4*4);
1192 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
1194 __u8
*v
= get_imsm_version(mpb
);
1195 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
1196 char major
[] = { 0, 0, 0 };
1197 char minor
[] = { 0 ,0, 0 };
1198 char patch
[] = { 0, 0, 0 };
1199 char *ver_parse
[] = { major
, minor
, patch
};
1203 while (*v
!= '\0' && v
< end
) {
1204 if (*v
!= '.' && j
< 2)
1205 ver_parse
[i
][j
++] = *v
;
1213 *m
= strtol(minor
, NULL
, 0);
1214 *p
= strtol(patch
, NULL
, 0);
1218 static int imsm_level_to_layout(int level
)
1226 return ALGORITHM_LEFT_ASYMMETRIC
;
1233 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
)
1235 struct intel_super
*super
= st
->sb
;
1236 struct imsm_dev
*dev
= get_imsm_dev(super
, super
->current_vol
);
1237 struct imsm_map
*map
= get_imsm_map(dev
, 0);
1240 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1241 if (dl
->raiddisk
== info
->disk
.raid_disk
)
1243 info
->container_member
= super
->current_vol
;
1244 info
->array
.raid_disks
= map
->num_members
;
1245 info
->array
.level
= get_imsm_raid_level(map
);
1246 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
1247 info
->array
.md_minor
= -1;
1248 info
->array
.ctime
= 0;
1249 info
->array
.utime
= 0;
1250 info
->array
.chunk_size
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
1251 info
->array
.state
= !dev
->vol
.dirty
;
1252 info
->custom_array_size
= __le32_to_cpu(dev
->size_high
);
1253 info
->custom_array_size
<<= 32;
1254 info
->custom_array_size
|= __le32_to_cpu(dev
->size_low
);
1256 info
->disk
.major
= 0;
1257 info
->disk
.minor
= 0;
1259 info
->disk
.major
= dl
->major
;
1260 info
->disk
.minor
= dl
->minor
;
1263 info
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
1264 info
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
1265 memset(info
->uuid
, 0, sizeof(info
->uuid
));
1267 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
|| dev
->vol
.dirty
)
1268 info
->resync_start
= 0;
1269 else if (dev
->vol
.migr_state
)
1270 /* FIXME add curr_migr_unit to resync_start conversion */
1271 info
->resync_start
= 0;
1273 info
->resync_start
= ~0ULL;
1275 strncpy(info
->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
1276 info
->name
[MAX_RAID_SERIAL_LEN
] = 0;
1278 info
->array
.major_version
= -1;
1279 info
->array
.minor_version
= -2;
1280 sprintf(info
->text_version
, "/%s/%d",
1281 devnum2devname(st
->container_dev
),
1282 info
->container_member
);
1283 info
->safe_mode_delay
= 4000; /* 4 secs like the Matrix driver */
1284 uuid_from_super_imsm(st
, info
->uuid
);
1287 /* check the config file to see if we can return a real uuid for this spare */
1288 static void fixup_container_spare_uuid(struct mdinfo
*inf
)
1290 struct mddev_ident_s
*array_list
;
1292 if (inf
->array
.level
!= LEVEL_CONTAINER
||
1293 memcmp(inf
->uuid
, uuid_match_any
, sizeof(int[4])) != 0)
1296 array_list
= conf_get_ident(NULL
);
1298 for (; array_list
; array_list
= array_list
->next
) {
1299 if (array_list
->uuid_set
) {
1300 struct supertype
*_sst
; /* spare supertype */
1301 struct supertype
*_cst
; /* container supertype */
1303 _cst
= array_list
->st
;
1305 _sst
= _cst
->ss
->match_metadata_desc(inf
->text_version
);
1310 memcpy(inf
->uuid
, array_list
->uuid
, sizeof(int[4]));
1318 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
)
1320 struct intel_super
*super
= st
->sb
;
1321 struct imsm_disk
*disk
;
1323 if (super
->current_vol
>= 0) {
1324 getinfo_super_imsm_volume(st
, info
);
1328 /* Set raid_disks to zero so that Assemble will always pull in valid
1331 info
->array
.raid_disks
= 0;
1332 info
->array
.level
= LEVEL_CONTAINER
;
1333 info
->array
.layout
= 0;
1334 info
->array
.md_minor
= -1;
1335 info
->array
.ctime
= 0; /* N/A for imsm */
1336 info
->array
.utime
= 0;
1337 info
->array
.chunk_size
= 0;
1339 info
->disk
.major
= 0;
1340 info
->disk
.minor
= 0;
1341 info
->disk
.raid_disk
= -1;
1342 info
->reshape_active
= 0;
1343 info
->array
.major_version
= -1;
1344 info
->array
.minor_version
= -2;
1345 strcpy(info
->text_version
, "imsm");
1346 info
->safe_mode_delay
= 0;
1347 info
->disk
.number
= -1;
1348 info
->disk
.state
= 0;
1352 __u32 reserved
= imsm_reserved_sectors(super
, super
->disks
);
1354 disk
= &super
->disks
->disk
;
1355 info
->data_offset
= __le32_to_cpu(disk
->total_blocks
) - reserved
;
1356 info
->component_size
= reserved
;
1357 info
->disk
.state
= is_configured(disk
) ? (1 << MD_DISK_ACTIVE
) : 0;
1358 /* we don't change info->disk.raid_disk here because
1359 * this state will be finalized in mdmon after we have
1360 * found the 'most fresh' version of the metadata
1362 info
->disk
.state
|= is_failed(disk
) ? (1 << MD_DISK_FAULTY
) : 0;
1363 info
->disk
.state
|= is_spare(disk
) ? 0 : (1 << MD_DISK_SYNC
);
1366 /* only call uuid_from_super_imsm when this disk is part of a populated container,
1367 * ->compare_super may have updated the 'num_raid_devs' field for spares
1369 if (info
->disk
.state
& (1 << MD_DISK_SYNC
) || super
->anchor
->num_raid_devs
)
1370 uuid_from_super_imsm(st
, info
->uuid
);
1372 memcpy(info
->uuid
, uuid_match_any
, sizeof(int[4]));
1373 fixup_container_spare_uuid(info
);
1377 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
1378 char *update
, char *devname
, int verbose
,
1379 int uuid_set
, char *homehost
)
1381 /* For 'assemble' and 'force' we need to return non-zero if any
1382 * change was made. For others, the return value is ignored.
1383 * Update options are:
1384 * force-one : This device looks a bit old but needs to be included,
1385 * update age info appropriately.
1386 * assemble: clear any 'faulty' flag to allow this device to
1388 * force-array: Array is degraded but being forced, mark it clean
1389 * if that will be needed to assemble it.
1391 * newdev: not used ????
1392 * grow: Array has gained a new device - this is currently for
1394 * resync: mark as dirty so a resync will happen.
1395 * name: update the name - preserving the homehost
1396 * uuid: Change the uuid of the array to match watch is given
1398 * Following are not relevant for this imsm:
1399 * sparc2.2 : update from old dodgey metadata
1400 * super-minor: change the preferred_minor number
1401 * summaries: update redundant counters.
1402 * homehost: update the recorded homehost
1403 * _reshape_progress: record new reshape_progress position.
1406 struct intel_super
*super
= st
->sb
;
1407 struct imsm_super
*mpb
;
1409 /* we can only update container info */
1410 if (!super
|| super
->current_vol
>= 0 || !super
->anchor
)
1413 mpb
= super
->anchor
;
1415 if (strcmp(update
, "uuid") == 0 && uuid_set
&& !info
->update_private
)
1417 Name
": '--uuid' not supported for imsm metadata\n");
1418 else if (strcmp(update
, "uuid") == 0 && uuid_set
&& info
->update_private
) {
1419 mpb
->orig_family_num
= *((__u32
*) info
->update_private
);
1421 } else if (strcmp(update
, "uuid") == 0) {
1422 __u32
*new_family
= malloc(sizeof(*new_family
));
1424 /* update orig_family_number with the incoming random
1425 * data, report the new effective uuid, and store the
1426 * new orig_family_num for future updates.
1429 memcpy(&mpb
->orig_family_num
, info
->uuid
, sizeof(__u32
));
1430 uuid_from_super_imsm(st
, info
->uuid
);
1431 *new_family
= mpb
->orig_family_num
;
1432 info
->update_private
= new_family
;
1435 } else if (strcmp(update
, "assemble") == 0)
1439 Name
": '--update=%s' not supported for imsm metadata\n",
1442 /* successful update? recompute checksum */
1444 mpb
->check_sum
= __le32_to_cpu(__gen_imsm_checksum(mpb
));
1449 static size_t disks_to_mpb_size(int disks
)
1453 size
= sizeof(struct imsm_super
);
1454 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
1455 size
+= 2 * sizeof(struct imsm_dev
);
1456 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
1457 size
+= (4 - 2) * sizeof(struct imsm_map
);
1458 /* 4 possible disk_ord_tbl's */
1459 size
+= 4 * (disks
- 1) * sizeof(__u32
);
1464 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
)
1466 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
1469 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
1472 static void free_devlist(struct intel_super
*super
)
1474 struct intel_dev
*dv
;
1476 while (super
->devlist
) {
1477 dv
= super
->devlist
->next
;
1478 free(super
->devlist
->dev
);
1479 free(super
->devlist
);
1480 super
->devlist
= dv
;
1484 static void imsm_copy_dev(struct imsm_dev
*dest
, struct imsm_dev
*src
)
1486 memcpy(dest
, src
, sizeof_imsm_dev(src
, 0));
1489 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
1493 * 0 same, or first was empty, and second was copied
1494 * 1 second had wrong number
1496 * 3 wrong other info
1498 struct intel_super
*first
= st
->sb
;
1499 struct intel_super
*sec
= tst
->sb
;
1507 /* if an anchor does not have num_raid_devs set then it is a free
1510 if (first
->anchor
->num_raid_devs
> 0 &&
1511 sec
->anchor
->num_raid_devs
> 0) {
1512 /* Determine if these disks might ever have been
1513 * related. Further disambiguation can only take place
1514 * in load_super_imsm_all
1516 __u32 first_family
= first
->anchor
->orig_family_num
;
1517 __u32 sec_family
= sec
->anchor
->orig_family_num
;
1519 if (memcmp(first
->anchor
->sig
, sec
->anchor
->sig
,
1520 MAX_SIGNATURE_LENGTH
) != 0)
1523 if (first_family
== 0)
1524 first_family
= first
->anchor
->family_num
;
1525 if (sec_family
== 0)
1526 sec_family
= sec
->anchor
->family_num
;
1528 if (first_family
!= sec_family
)
1534 /* if 'first' is a spare promote it to a populated mpb with sec's
1537 if (first
->anchor
->num_raid_devs
== 0 &&
1538 sec
->anchor
->num_raid_devs
> 0) {
1540 struct intel_dev
*dv
;
1541 struct imsm_dev
*dev
;
1543 /* we need to copy raid device info from sec if an allocation
1544 * fails here we don't associate the spare
1546 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++) {
1547 dv
= malloc(sizeof(*dv
));
1550 dev
= malloc(sizeof_imsm_dev(get_imsm_dev(sec
, i
), 1));
1557 dv
->next
= first
->devlist
;
1558 first
->devlist
= dv
;
1560 if (i
< sec
->anchor
->num_raid_devs
) {
1561 /* allocation failure */
1562 free_devlist(first
);
1563 fprintf(stderr
, "imsm: failed to associate spare\n");
1566 first
->anchor
->num_raid_devs
= sec
->anchor
->num_raid_devs
;
1567 first
->anchor
->orig_family_num
= sec
->anchor
->orig_family_num
;
1568 first
->anchor
->family_num
= sec
->anchor
->family_num
;
1569 for (i
= 0; i
< sec
->anchor
->num_raid_devs
; i
++)
1570 imsm_copy_dev(get_imsm_dev(first
, i
), get_imsm_dev(sec
, i
));
1576 static void fd2devname(int fd
, char *name
)
1585 if (fstat(fd
, &st
) != 0)
1587 sprintf(path
, "/sys/dev/block/%d:%d",
1588 major(st
.st_rdev
), minor(st
.st_rdev
));
1590 rv
= readlink(path
, dname
, sizeof(dname
));
1595 nm
= strrchr(dname
, '/');
1597 snprintf(name
, MAX_RAID_SERIAL_LEN
, "/dev/%s", nm
);
1600 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
1602 static int imsm_read_serial(int fd
, char *devname
,
1603 __u8 serial
[MAX_RAID_SERIAL_LEN
])
1605 unsigned char scsi_serial
[255];
1614 memset(scsi_serial
, 0, sizeof(scsi_serial
));
1616 rv
= scsi_get_serial(fd
, scsi_serial
, sizeof(scsi_serial
));
1618 if (rv
&& check_env("IMSM_DEVNAME_AS_SERIAL")) {
1619 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
1620 fd2devname(fd
, (char *) serial
);
1627 Name
": Failed to retrieve serial for %s\n",
1632 rsp_len
= scsi_serial
[3];
1636 Name
": Failed to retrieve serial for %s\n",
1640 rsp_buf
= (char *) &scsi_serial
[4];
1642 /* trim all whitespace and non-printable characters and convert
1645 for (i
= 0, dest
= rsp_buf
; i
< rsp_len
; i
++) {
1648 /* ':' is reserved for use in placeholder serial
1649 * numbers for missing disks
1657 len
= dest
- rsp_buf
;
1660 /* truncate leading characters */
1661 if (len
> MAX_RAID_SERIAL_LEN
) {
1662 dest
+= len
- MAX_RAID_SERIAL_LEN
;
1663 len
= MAX_RAID_SERIAL_LEN
;
1666 memset(serial
, 0, MAX_RAID_SERIAL_LEN
);
1667 memcpy(serial
, dest
, len
);
1672 static int serialcmp(__u8
*s1
, __u8
*s2
)
1674 return strncmp((char *) s1
, (char *) s2
, MAX_RAID_SERIAL_LEN
);
1677 static void serialcpy(__u8
*dest
, __u8
*src
)
1679 strncpy((char *) dest
, (char *) src
, MAX_RAID_SERIAL_LEN
);
1683 static struct dl
*serial_to_dl(__u8
*serial
, struct intel_super
*super
)
1687 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1688 if (serialcmp(dl
->serial
, serial
) == 0)
1695 static struct imsm_disk
*
1696 __serial_to_disk(__u8
*serial
, struct imsm_super
*mpb
, int *idx
)
1700 for (i
= 0; i
< mpb
->num_disks
; i
++) {
1701 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
1703 if (serialcmp(disk
->serial
, serial
) == 0) {
1714 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
1716 struct imsm_disk
*disk
;
1721 __u8 serial
[MAX_RAID_SERIAL_LEN
];
1723 rv
= imsm_read_serial(fd
, devname
, serial
);
1728 dl
= calloc(1, sizeof(*dl
));
1732 Name
": failed to allocate disk buffer for %s\n",
1738 dl
->major
= major(stb
.st_rdev
);
1739 dl
->minor
= minor(stb
.st_rdev
);
1740 dl
->next
= super
->disks
;
1741 dl
->fd
= keep_fd
? fd
: -1;
1742 assert(super
->disks
== NULL
);
1744 serialcpy(dl
->serial
, serial
);
1747 fd2devname(fd
, name
);
1749 dl
->devname
= strdup(devname
);
1751 dl
->devname
= strdup(name
);
1753 /* look up this disk's index in the current anchor */
1754 disk
= __serial_to_disk(dl
->serial
, super
->anchor
, &dl
->index
);
1757 /* only set index on disks that are a member of a
1758 * populated contianer, i.e. one with raid_devs
1760 if (is_failed(&dl
->disk
))
1762 else if (is_spare(&dl
->disk
))
1770 /* When migrating map0 contains the 'destination' state while map1
1771 * contains the current state. When not migrating map0 contains the
1772 * current state. This routine assumes that map[0].map_state is set to
1773 * the current array state before being called.
1775 * Migration is indicated by one of the following states
1776 * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
1777 * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal
1778 * map1state=unitialized)
1779 * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal
1781 * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal
1782 * map1state=degraded)
1784 static void migrate(struct imsm_dev
*dev
, __u8 to_state
, int migr_type
)
1786 struct imsm_map
*dest
;
1787 struct imsm_map
*src
= get_imsm_map(dev
, 0);
1789 dev
->vol
.migr_state
= 1;
1790 set_migr_type(dev
, migr_type
);
1791 dev
->vol
.curr_migr_unit
= 0;
1792 dest
= get_imsm_map(dev
, 1);
1794 /* duplicate and then set the target end state in map[0] */
1795 memcpy(dest
, src
, sizeof_imsm_map(src
));
1796 if (migr_type
== MIGR_REBUILD
) {
1800 for (i
= 0; i
< src
->num_members
; i
++) {
1801 ord
= __le32_to_cpu(src
->disk_ord_tbl
[i
]);
1802 set_imsm_ord_tbl_ent(src
, i
, ord_to_idx(ord
));
1806 src
->map_state
= to_state
;
1809 static void end_migration(struct imsm_dev
*dev
, __u8 map_state
)
1811 struct imsm_map
*map
= get_imsm_map(dev
, 0);
1812 struct imsm_map
*prev
= get_imsm_map(dev
, dev
->vol
.migr_state
);
1815 /* merge any IMSM_ORD_REBUILD bits that were not successfully
1816 * completed in the last migration.
1818 * FIXME add support for online capacity expansion and
1819 * raid-level-migration
1821 for (i
= 0; i
< prev
->num_members
; i
++)
1822 map
->disk_ord_tbl
[i
] |= prev
->disk_ord_tbl
[i
];
1824 dev
->vol
.migr_state
= 0;
1825 dev
->vol
.curr_migr_unit
= 0;
1826 map
->map_state
= map_state
;
1830 static int parse_raid_devices(struct intel_super
*super
)
1833 struct imsm_dev
*dev_new
;
1834 size_t len
, len_migr
;
1835 size_t space_needed
= 0;
1836 struct imsm_super
*mpb
= super
->anchor
;
1838 for (i
= 0; i
< super
->anchor
->num_raid_devs
; i
++) {
1839 struct imsm_dev
*dev_iter
= __get_imsm_dev(super
->anchor
, i
);
1840 struct intel_dev
*dv
;
1842 len
= sizeof_imsm_dev(dev_iter
, 0);
1843 len_migr
= sizeof_imsm_dev(dev_iter
, 1);
1845 space_needed
+= len_migr
- len
;
1847 dv
= malloc(sizeof(*dv
));
1850 dev_new
= malloc(len_migr
);
1855 imsm_copy_dev(dev_new
, dev_iter
);
1858 dv
->next
= super
->devlist
;
1859 super
->devlist
= dv
;
1862 /* ensure that super->buf is large enough when all raid devices
1865 if (__le32_to_cpu(mpb
->mpb_size
) + space_needed
> super
->len
) {
1868 len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + space_needed
, 512);
1869 if (posix_memalign(&buf
, 512, len
) != 0)
1872 memcpy(buf
, super
->buf
, super
->len
);
1873 memset(buf
+ super
->len
, 0, len
- super
->len
);
1882 /* retrieve a pointer to the bbm log which starts after all raid devices */
1883 struct bbm_log
*__get_imsm_bbm_log(struct imsm_super
*mpb
)
1887 if (__le32_to_cpu(mpb
->bbm_log_size
)) {
1889 ptr
+= mpb
->mpb_size
- __le32_to_cpu(mpb
->bbm_log_size
);
1895 static void __free_imsm(struct intel_super
*super
, int free_disks
);
1897 /* load_imsm_mpb - read matrix metadata
1898 * allocates super->mpb to be freed by free_super
1900 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
1902 unsigned long long dsize
;
1903 unsigned long long sectors
;
1905 struct imsm_super
*anchor
;
1908 get_dev_size(fd
, NULL
, &dsize
);
1910 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
1913 Name
": Cannot seek to anchor block on %s: %s\n",
1914 devname
, strerror(errno
));
1918 if (posix_memalign((void**)&anchor
, 512, 512) != 0) {
1921 Name
": Failed to allocate imsm anchor buffer"
1922 " on %s\n", devname
);
1925 if (read(fd
, anchor
, 512) != 512) {
1928 Name
": Cannot read anchor block on %s: %s\n",
1929 devname
, strerror(errno
));
1934 if (strncmp((char *) anchor
->sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
1937 Name
": no IMSM anchor on %s\n", devname
);
1942 __free_imsm(super
, 0);
1943 super
->len
= ROUND_UP(anchor
->mpb_size
, 512);
1944 if (posix_memalign(&super
->buf
, 512, super
->len
) != 0) {
1947 Name
": unable to allocate %zu byte mpb buffer\n",
1952 memcpy(super
->buf
, anchor
, 512);
1954 sectors
= mpb_sectors(anchor
) - 1;
1957 check_sum
= __gen_imsm_checksum(super
->anchor
);
1958 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
1961 Name
": IMSM checksum %x != %x on %s\n",
1963 __le32_to_cpu(super
->anchor
->check_sum
),
1971 /* read the extended mpb */
1972 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
1975 Name
": Cannot seek to extended mpb on %s: %s\n",
1976 devname
, strerror(errno
));
1980 if (read(fd
, super
->buf
+ 512, super
->len
- 512) != super
->len
- 512) {
1983 Name
": Cannot read extended mpb on %s: %s\n",
1984 devname
, strerror(errno
));
1988 check_sum
= __gen_imsm_checksum(super
->anchor
);
1989 if (check_sum
!= __le32_to_cpu(super
->anchor
->check_sum
)) {
1992 Name
": IMSM checksum %x != %x on %s\n",
1993 check_sum
, __le32_to_cpu(super
->anchor
->check_sum
),
1998 /* FIXME the BBM log is disk specific so we cannot use this global
1999 * buffer for all disks. Ok for now since we only look at the global
2000 * bbm_log_size parameter to gate assembly
2002 super
->bbm_log
= __get_imsm_bbm_log(super
->anchor
);
2008 load_and_parse_mpb(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
2012 err
= load_imsm_mpb(fd
, super
, devname
);
2015 err
= load_imsm_disk(fd
, super
, devname
, keep_fd
);
2018 err
= parse_raid_devices(super
);
2023 static void __free_imsm_disk(struct dl
*d
)
2034 static void free_imsm_disks(struct intel_super
*super
)
2038 while (super
->disks
) {
2040 super
->disks
= d
->next
;
2041 __free_imsm_disk(d
);
2043 while (super
->missing
) {
2045 super
->missing
= d
->next
;
2046 __free_imsm_disk(d
);
2051 /* free all the pieces hanging off of a super pointer */
2052 static void __free_imsm(struct intel_super
*super
, int free_disks
)
2059 free_imsm_disks(super
);
2060 free_devlist(super
);
2062 free((void *) super
->hba
);
2067 static void free_imsm(struct intel_super
*super
)
2069 __free_imsm(super
, 1);
2073 static void free_super_imsm(struct supertype
*st
)
2075 struct intel_super
*super
= st
->sb
;
2084 static struct intel_super
*alloc_super(int creating_imsm
)
2086 struct intel_super
*super
= malloc(sizeof(*super
));
2089 memset(super
, 0, sizeof(*super
));
2090 super
->creating_imsm
= creating_imsm
;
2091 super
->current_vol
= -1;
2092 super
->create_offset
= ~((__u32
) 0);
2093 if (!check_env("IMSM_NO_PLATFORM"))
2094 super
->orom
= find_imsm_orom();
2095 if (super
->orom
&& !check_env("IMSM_TEST_OROM")) {
2096 struct sys_dev
*list
, *ent
;
2098 /* find the first intel ahci controller */
2099 list
= find_driver_devices("pci", "ahci");
2100 for (ent
= list
; ent
; ent
= ent
->next
)
2101 if (devpath_to_vendor(ent
->path
) == 0x8086)
2104 super
->hba
= ent
->path
;
2107 free_sys_dev(&list
);
2115 /* find_missing - helper routine for load_super_imsm_all that identifies
2116 * disks that have disappeared from the system. This routine relies on
2117 * the mpb being uptodate, which it is at load time.
2119 static int find_missing(struct intel_super
*super
)
2122 struct imsm_super
*mpb
= super
->anchor
;
2124 struct imsm_disk
*disk
;
2126 for (i
= 0; i
< mpb
->num_disks
; i
++) {
2127 disk
= __get_imsm_disk(mpb
, i
);
2128 dl
= serial_to_dl(disk
->serial
, super
);
2132 dl
= malloc(sizeof(*dl
));
2138 dl
->devname
= strdup("missing");
2140 serialcpy(dl
->serial
, disk
->serial
);
2143 dl
->next
= super
->missing
;
2144 super
->missing
= dl
;
2150 static struct intel_disk
*disk_list_get(__u8
*serial
, struct intel_disk
*disk_list
)
2152 struct intel_disk
*idisk
= disk_list
;
2155 if (serialcmp(idisk
->disk
.serial
, serial
) == 0)
2157 idisk
= idisk
->next
;
2163 static int __prep_thunderdome(struct intel_super
**table
, int tbl_size
,
2164 struct intel_super
*super
,
2165 struct intel_disk
**disk_list
)
2167 struct imsm_disk
*d
= &super
->disks
->disk
;
2168 struct imsm_super
*mpb
= super
->anchor
;
2171 for (i
= 0; i
< tbl_size
; i
++) {
2172 struct imsm_super
*tbl_mpb
= table
[i
]->anchor
;
2173 struct imsm_disk
*tbl_d
= &table
[i
]->disks
->disk
;
2175 if (tbl_mpb
->family_num
== mpb
->family_num
) {
2176 if (tbl_mpb
->check_sum
== mpb
->check_sum
) {
2177 dprintf("%s: mpb from %d:%d matches %d:%d\n",
2178 __func__
, super
->disks
->major
,
2179 super
->disks
->minor
,
2180 table
[i
]->disks
->major
,
2181 table
[i
]->disks
->minor
);
2185 if (((is_configured(d
) && !is_configured(tbl_d
)) ||
2186 is_configured(d
) == is_configured(tbl_d
)) &&
2187 tbl_mpb
->generation_num
< mpb
->generation_num
) {
2188 /* current version of the mpb is a
2189 * better candidate than the one in
2190 * super_table, but copy over "cross
2191 * generational" status
2193 struct intel_disk
*idisk
;
2195 dprintf("%s: mpb from %d:%d replaces %d:%d\n",
2196 __func__
, super
->disks
->major
,
2197 super
->disks
->minor
,
2198 table
[i
]->disks
->major
,
2199 table
[i
]->disks
->minor
);
2201 idisk
= disk_list_get(tbl_d
->serial
, *disk_list
);
2202 if (idisk
&& is_failed(&idisk
->disk
))
2203 tbl_d
->status
|= FAILED_DISK
;
2206 struct intel_disk
*idisk
;
2207 struct imsm_disk
*disk
;
2209 /* tbl_mpb is more up to date, but copy
2210 * over cross generational status before
2213 disk
= __serial_to_disk(d
->serial
, mpb
, NULL
);
2214 if (disk
&& is_failed(disk
))
2215 d
->status
|= FAILED_DISK
;
2217 idisk
= disk_list_get(d
->serial
, *disk_list
);
2220 if (disk
&& is_configured(disk
))
2221 idisk
->disk
.status
|= CONFIGURED_DISK
;
2224 dprintf("%s: mpb from %d:%d prefer %d:%d\n",
2225 __func__
, super
->disks
->major
,
2226 super
->disks
->minor
,
2227 table
[i
]->disks
->major
,
2228 table
[i
]->disks
->minor
);
2236 table
[tbl_size
++] = super
;
2240 /* update/extend the merged list of imsm_disk records */
2241 for (j
= 0; j
< mpb
->num_disks
; j
++) {
2242 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, j
);
2243 struct intel_disk
*idisk
;
2245 idisk
= disk_list_get(disk
->serial
, *disk_list
);
2247 idisk
->disk
.status
|= disk
->status
;
2248 if (is_configured(&idisk
->disk
) ||
2249 is_failed(&idisk
->disk
))
2250 idisk
->disk
.status
&= ~(SPARE_DISK
);
2252 idisk
= calloc(1, sizeof(*idisk
));
2255 idisk
->owner
= IMSM_UNKNOWN_OWNER
;
2256 idisk
->disk
= *disk
;
2257 idisk
->next
= *disk_list
;
2261 if (serialcmp(idisk
->disk
.serial
, d
->serial
) == 0)
2268 static struct intel_super
*
2269 validate_members(struct intel_super
*super
, struct intel_disk
*disk_list
,
2272 struct imsm_super
*mpb
= super
->anchor
;
2276 for (i
= 0; i
< mpb
->num_disks
; i
++) {
2277 struct imsm_disk
*disk
= __get_imsm_disk(mpb
, i
);
2278 struct intel_disk
*idisk
;
2280 idisk
= disk_list_get(disk
->serial
, disk_list
);
2282 if (idisk
->owner
== owner
||
2283 idisk
->owner
== IMSM_UNKNOWN_OWNER
)
2286 dprintf("%s: '%.16s' owner %d != %d\n",
2287 __func__
, disk
->serial
, idisk
->owner
,
2290 dprintf("%s: unknown disk %x [%d]: %.16s\n",
2291 __func__
, __le32_to_cpu(mpb
->family_num
), i
,
2297 if (ok_count
== mpb
->num_disks
)
2302 static void show_conflicts(__u32 family_num
, struct intel_super
*super_list
)
2304 struct intel_super
*s
;
2306 for (s
= super_list
; s
; s
= s
->next
) {
2307 if (family_num
!= s
->anchor
->family_num
)
2309 fprintf(stderr
, "Conflict, offlining family %#x on '%s'\n",
2310 __le32_to_cpu(family_num
), s
->disks
->devname
);
2314 static struct intel_super
*
2315 imsm_thunderdome(struct intel_super
**super_list
, int len
)
2317 struct intel_super
*super_table
[len
];
2318 struct intel_disk
*disk_list
= NULL
;
2319 struct intel_super
*champion
, *spare
;
2320 struct intel_super
*s
, **del
;
2325 memset(super_table
, 0, sizeof(super_table
));
2326 for (s
= *super_list
; s
; s
= s
->next
)
2327 tbl_size
= __prep_thunderdome(super_table
, tbl_size
, s
, &disk_list
);
2329 for (i
= 0; i
< tbl_size
; i
++) {
2330 struct imsm_disk
*d
;
2331 struct intel_disk
*idisk
;
2332 struct imsm_super
*mpb
= super_table
[i
]->anchor
;
2335 d
= &s
->disks
->disk
;
2337 /* 'd' must appear in merged disk list for its
2338 * configuration to be valid
2340 idisk
= disk_list_get(d
->serial
, disk_list
);
2341 if (idisk
&& idisk
->owner
== i
)
2342 s
= validate_members(s
, disk_list
, i
);
2347 dprintf("%s: marking family: %#x from %d:%d offline\n",
2348 __func__
, mpb
->family_num
,
2349 super_table
[i
]->disks
->major
,
2350 super_table
[i
]->disks
->minor
);
2354 /* This is where the mdadm implementation differs from the Windows
2355 * driver which has no strict concept of a container. We can only
2356 * assemble one family from a container, so when returning a prodigal
2357 * array member to this system the code will not be able to disambiguate
2358 * the container contents that should be assembled ("foreign" versus
2359 * "local"). It requires user intervention to set the orig_family_num
2360 * to a new value to establish a new container. The Windows driver in
2361 * this situation fixes up the volume name in place and manages the
2362 * foreign array as an independent entity.
2367 for (i
= 0; i
< tbl_size
; i
++) {
2368 struct intel_super
*tbl_ent
= super_table
[i
];
2374 if (tbl_ent
->anchor
->num_raid_devs
== 0) {
2379 if (s
&& !is_spare
) {
2380 show_conflicts(tbl_ent
->anchor
->family_num
, *super_list
);
2382 } else if (!s
&& !is_spare
)
2395 fprintf(stderr
, "Chose family %#x on '%s', "
2396 "assemble conflicts to new container with '--update=uuid'\n",
2397 __le32_to_cpu(s
->anchor
->family_num
), s
->disks
->devname
);
2399 /* collect all dl's onto 'champion', and update them to
2400 * champion's version of the status
2402 for (s
= *super_list
; s
; s
= s
->next
) {
2403 struct imsm_super
*mpb
= champion
->anchor
;
2404 struct dl
*dl
= s
->disks
;
2409 for (i
= 0; i
< mpb
->num_disks
; i
++) {
2410 struct imsm_disk
*disk
;
2412 disk
= __serial_to_disk(dl
->serial
, mpb
, &dl
->index
);
2415 /* only set index on disks that are a member of
2416 * a populated contianer, i.e. one with
2419 if (is_failed(&dl
->disk
))
2421 else if (is_spare(&dl
->disk
))
2427 if (i
>= mpb
->num_disks
) {
2428 struct intel_disk
*idisk
;
2430 idisk
= disk_list_get(dl
->serial
, disk_list
);
2431 if (is_spare(&idisk
->disk
) &&
2432 !is_failed(&idisk
->disk
) && !is_configured(&idisk
->disk
))
2440 dl
->next
= champion
->disks
;
2441 champion
->disks
= dl
;
2445 /* delete 'champion' from super_list */
2446 for (del
= super_list
; *del
; ) {
2447 if (*del
== champion
) {
2448 *del
= (*del
)->next
;
2451 del
= &(*del
)->next
;
2453 champion
->next
= NULL
;
2457 struct intel_disk
*idisk
= disk_list
;
2459 disk_list
= disk_list
->next
;
2466 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
2467 char *devname
, int keep_fd
)
2470 struct intel_super
*super_list
= NULL
;
2471 struct intel_super
*super
= NULL
;
2472 int devnum
= fd2devnum(fd
);
2477 enum sysfs_read_flags flags
;
2479 flags
= GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
;
2480 if (mdmon_running(devnum
))
2481 flags
|= SKIP_GONE_DEVS
;
2483 /* check if 'fd' an opened container */
2484 sra
= sysfs_read(fd
, 0, flags
);
2488 if (sra
->array
.major_version
!= -1 ||
2489 sra
->array
.minor_version
!= -2 ||
2490 strcmp(sra
->text_version
, "imsm") != 0)
2494 for (sd
= sra
->devs
, i
= 0; sd
; sd
= sd
->next
, i
++) {
2495 struct intel_super
*s
= alloc_super(0);
2502 s
->next
= super_list
;
2506 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
2507 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
2511 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
2513 /* retry the load if we might have raced against mdmon */
2514 if (err
== 3 && mdmon_running(devnum
))
2515 for (retry
= 0; retry
< 3; retry
++) {
2517 err
= load_and_parse_mpb(dfd
, s
, NULL
, keep_fd
);
2527 /* all mpbs enter, maybe one leaves */
2528 super
= imsm_thunderdome(&super_list
, i
);
2534 if (find_missing(super
) != 0) {
2540 if (st
->subarray
[0]) {
2541 if (atoi(st
->subarray
) <= super
->anchor
->num_raid_devs
)
2542 super
->current_vol
= atoi(st
->subarray
);
2552 while (super_list
) {
2553 struct intel_super
*s
= super_list
;
2555 super_list
= super_list
->next
;
2563 st
->container_dev
= devnum
;
2564 if (err
== 0 && st
->ss
== NULL
) {
2565 st
->ss
= &super_imsm
;
2566 st
->minor_version
= 0;
2567 st
->max_devs
= IMSM_MAX_DEVICES
;
2569 st
->loaded_container
= 1;
2575 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
2577 struct intel_super
*super
;
2581 if (load_super_imsm_all(st
, fd
, &st
->sb
, devname
, 1) == 0)
2585 free_super_imsm(st
);
2587 super
= alloc_super(0);
2590 Name
": malloc of %zu failed.\n",
2595 rv
= load_and_parse_mpb(fd
, super
, devname
, 0);
2600 Name
": Failed to load all information "
2601 "sections on %s\n", devname
);
2606 if (st
->subarray
[0]) {
2607 if (atoi(st
->subarray
) <= super
->anchor
->num_raid_devs
)
2608 super
->current_vol
= atoi(st
->subarray
);
2616 if (st
->ss
== NULL
) {
2617 st
->ss
= &super_imsm
;
2618 st
->minor_version
= 0;
2619 st
->max_devs
= IMSM_MAX_DEVICES
;
2621 st
->loaded_container
= 0;
2626 static __u16
info_to_blocks_per_strip(mdu_array_info_t
*info
)
2628 if (info
->level
== 1)
2630 return info
->chunk_size
>> 9;
2633 static __u32
info_to_num_data_stripes(mdu_array_info_t
*info
, int num_domains
)
2637 num_stripes
= (info
->size
* 2) / info_to_blocks_per_strip(info
);
2638 num_stripes
/= num_domains
;
2643 static __u32
info_to_blocks_per_member(mdu_array_info_t
*info
)
2645 if (info
->level
== 1)
2646 return info
->size
* 2;
2648 return (info
->size
* 2) & ~(info_to_blocks_per_strip(info
) - 1);
2651 static void imsm_update_version_info(struct intel_super
*super
)
2653 /* update the version and attributes */
2654 struct imsm_super
*mpb
= super
->anchor
;
2656 struct imsm_dev
*dev
;
2657 struct imsm_map
*map
;
2660 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
2661 dev
= get_imsm_dev(super
, i
);
2662 map
= get_imsm_map(dev
, 0);
2663 if (__le32_to_cpu(dev
->size_high
) > 0)
2664 mpb
->attributes
|= MPB_ATTRIB_2TB
;
2666 /* FIXME detect when an array spans a port multiplier */
2668 mpb
->attributes
|= MPB_ATTRIB_PM
;
2671 if (mpb
->num_raid_devs
> 1 ||
2672 mpb
->attributes
!= MPB_ATTRIB_CHECKSUM_VERIFY
) {
2673 version
= MPB_VERSION_ATTRIBS
;
2674 switch (get_imsm_raid_level(map
)) {
2675 case 0: mpb
->attributes
|= MPB_ATTRIB_RAID0
; break;
2676 case 1: mpb
->attributes
|= MPB_ATTRIB_RAID1
; break;
2677 case 10: mpb
->attributes
|= MPB_ATTRIB_RAID10
; break;
2678 case 5: mpb
->attributes
|= MPB_ATTRIB_RAID5
; break;
2681 if (map
->num_members
>= 5)
2682 version
= MPB_VERSION_5OR6_DISK_ARRAY
;
2683 else if (dev
->status
== DEV_CLONE_N_GO
)
2684 version
= MPB_VERSION_CNG
;
2685 else if (get_imsm_raid_level(map
) == 5)
2686 version
= MPB_VERSION_RAID5
;
2687 else if (map
->num_members
>= 3)
2688 version
= MPB_VERSION_3OR4_DISK_ARRAY
;
2689 else if (get_imsm_raid_level(map
) == 1)
2690 version
= MPB_VERSION_RAID1
;
2692 version
= MPB_VERSION_RAID0
;
2694 strcpy(((char *) mpb
->sig
) + strlen(MPB_SIGNATURE
), version
);
2698 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
2699 unsigned long long size
, char *name
,
2700 char *homehost
, int *uuid
)
2702 /* We are creating a volume inside a pre-existing container.
2703 * so st->sb is already set.
2705 struct intel_super
*super
= st
->sb
;
2706 struct imsm_super
*mpb
= super
->anchor
;
2707 struct intel_dev
*dv
;
2708 struct imsm_dev
*dev
;
2709 struct imsm_vol
*vol
;
2710 struct imsm_map
*map
;
2711 int idx
= mpb
->num_raid_devs
;
2713 unsigned long long array_blocks
;
2714 size_t size_old
, size_new
;
2715 __u32 num_data_stripes
;
2717 if (super
->orom
&& mpb
->num_raid_devs
>= super
->orom
->vpa
) {
2718 fprintf(stderr
, Name
": This imsm-container already has the "
2719 "maximum of %d volumes\n", super
->orom
->vpa
);
2723 /* ensure the mpb is large enough for the new data */
2724 size_old
= __le32_to_cpu(mpb
->mpb_size
);
2725 size_new
= disks_to_mpb_size(info
->nr_disks
);
2726 if (size_new
> size_old
) {
2728 size_t size_round
= ROUND_UP(size_new
, 512);
2730 if (posix_memalign(&mpb_new
, 512, size_round
) != 0) {
2731 fprintf(stderr
, Name
": could not allocate new mpb\n");
2734 memcpy(mpb_new
, mpb
, size_old
);
2737 super
->anchor
= mpb_new
;
2738 mpb
->mpb_size
= __cpu_to_le32(size_new
);
2739 memset(mpb_new
+ size_old
, 0, size_round
- size_old
);
2741 super
->current_vol
= idx
;
2742 /* when creating the first raid device in this container set num_disks
2743 * to zero, i.e. delete this spare and add raid member devices in
2744 * add_to_super_imsm_volume()
2746 if (super
->current_vol
== 0)
2749 for (i
= 0; i
< super
->current_vol
; i
++) {
2750 dev
= get_imsm_dev(super
, i
);
2751 if (strncmp((char *) dev
->volume
, name
,
2752 MAX_RAID_SERIAL_LEN
) == 0) {
2753 fprintf(stderr
, Name
": '%s' is already defined for this container\n",
2759 sprintf(st
->subarray
, "%d", idx
);
2760 dv
= malloc(sizeof(*dv
));
2762 fprintf(stderr
, Name
": failed to allocate device list entry\n");
2765 dev
= malloc(sizeof(*dev
) + sizeof(__u32
) * (info
->raid_disks
- 1));
2768 fprintf(stderr
, Name
": could not allocate raid device\n");
2771 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
2772 if (info
->level
== 1)
2773 array_blocks
= info_to_blocks_per_member(info
);
2775 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
2776 info
->layout
, info
->chunk_size
,
2778 /* round array size down to closest MB */
2779 array_blocks
= (array_blocks
>> SECT_PER_MB_SHIFT
) << SECT_PER_MB_SHIFT
;
2781 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
2782 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
2783 dev
->status
= __cpu_to_le32(0);
2784 dev
->reserved_blocks
= __cpu_to_le32(0);
2786 vol
->migr_state
= 0;
2787 set_migr_type(dev
, MIGR_INIT
);
2789 vol
->curr_migr_unit
= 0;
2790 map
= get_imsm_map(dev
, 0);
2791 map
->pba_of_lba0
= __cpu_to_le32(super
->create_offset
);
2792 map
->blocks_per_member
= __cpu_to_le32(info_to_blocks_per_member(info
));
2793 map
->blocks_per_strip
= __cpu_to_le16(info_to_blocks_per_strip(info
));
2794 map
->failed_disk_num
= ~0;
2795 map
->map_state
= info
->level
? IMSM_T_STATE_UNINITIALIZED
:
2796 IMSM_T_STATE_NORMAL
;
2799 if (info
->level
== 1 && info
->raid_disks
> 2) {
2800 fprintf(stderr
, Name
": imsm does not support more than 2 disks"
2801 "in a raid1 volume\n");
2805 map
->raid_level
= info
->level
;
2806 if (info
->level
== 10) {
2807 map
->raid_level
= 1;
2808 map
->num_domains
= info
->raid_disks
/ 2;
2809 } else if (info
->level
== 1)
2810 map
->num_domains
= info
->raid_disks
;
2812 map
->num_domains
= 1;
2814 num_data_stripes
= info_to_num_data_stripes(info
, map
->num_domains
);
2815 map
->num_data_stripes
= __cpu_to_le32(num_data_stripes
);
2817 map
->num_members
= info
->raid_disks
;
2818 for (i
= 0; i
< map
->num_members
; i
++) {
2819 /* initialized in add_to_super */
2820 set_imsm_ord_tbl_ent(map
, i
, 0);
2822 mpb
->num_raid_devs
++;
2825 dv
->index
= super
->current_vol
;
2826 dv
->next
= super
->devlist
;
2827 super
->devlist
= dv
;
2829 imsm_update_version_info(super
);
2834 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
2835 unsigned long long size
, char *name
,
2836 char *homehost
, int *uuid
)
2838 /* This is primarily called by Create when creating a new array.
2839 * We will then get add_to_super called for each component, and then
2840 * write_init_super called to write it out to each device.
2841 * For IMSM, Create can create on fresh devices or on a pre-existing
2843 * To create on a pre-existing array a different method will be called.
2844 * This one is just for fresh drives.
2846 struct intel_super
*super
;
2847 struct imsm_super
*mpb
;
2852 return init_super_imsm_volume(st
, info
, size
, name
, homehost
, uuid
);
2855 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
2859 super
= alloc_super(1);
2860 if (super
&& posix_memalign(&super
->buf
, 512, mpb_size
) != 0) {
2865 fprintf(stderr
, Name
2866 ": %s could not allocate superblock\n", __func__
);
2869 memset(super
->buf
, 0, mpb_size
);
2871 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
2875 /* zeroing superblock */
2879 mpb
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
2881 version
= (char *) mpb
->sig
;
2882 strcpy(version
, MPB_SIGNATURE
);
2883 version
+= strlen(MPB_SIGNATURE
);
2884 strcpy(version
, MPB_VERSION_RAID0
);
2890 static int add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
2891 int fd
, char *devname
)
2893 struct intel_super
*super
= st
->sb
;
2894 struct imsm_super
*mpb
= super
->anchor
;
2896 struct imsm_dev
*dev
;
2897 struct imsm_map
*map
;
2899 dev
= get_imsm_dev(super
, super
->current_vol
);
2900 map
= get_imsm_map(dev
, 0);
2902 if (! (dk
->state
& (1<<MD_DISK_SYNC
))) {
2903 fprintf(stderr
, Name
": %s: Cannot add spare devices to IMSM volume\n",
2909 /* we're doing autolayout so grab the pre-marked (in
2910 * validate_geometry) raid_disk
2912 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
2913 if (dl
->raiddisk
== dk
->raid_disk
)
2916 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
2917 if (dl
->major
== dk
->major
&&
2918 dl
->minor
== dk
->minor
)
2923 fprintf(stderr
, Name
": %s is not a member of the same container\n", devname
);
2927 /* add a pristine spare to the metadata */
2928 if (dl
->index
< 0) {
2929 dl
->index
= super
->anchor
->num_disks
;
2930 super
->anchor
->num_disks
++;
2932 set_imsm_ord_tbl_ent(map
, dk
->number
, dl
->index
);
2933 dl
->disk
.status
= CONFIGURED_DISK
;
2935 /* if we are creating the first raid device update the family number */
2936 if (super
->current_vol
== 0) {
2938 struct imsm_dev
*_dev
= __get_imsm_dev(mpb
, 0);
2939 struct imsm_disk
*_disk
= __get_imsm_disk(mpb
, dl
->index
);
2944 sum
+= __gen_imsm_checksum(mpb
);
2945 mpb
->family_num
= __cpu_to_le32(sum
);
2946 mpb
->orig_family_num
= mpb
->family_num
;
2952 static int add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
2953 int fd
, char *devname
)
2955 struct intel_super
*super
= st
->sb
;
2957 unsigned long long size
;
2962 /* if we are on an RAID enabled platform check that the disk is
2963 * attached to the raid controller
2965 if (super
->hba
&& !disk_attached_to_hba(fd
, super
->hba
)) {
2967 Name
": %s is not attached to the raid controller: %s\n",
2968 devname
? : "disk", super
->hba
);
2972 if (super
->current_vol
>= 0)
2973 return add_to_super_imsm_volume(st
, dk
, fd
, devname
);
2976 dd
= malloc(sizeof(*dd
));
2979 Name
": malloc failed %s:%d.\n", __func__
, __LINE__
);
2982 memset(dd
, 0, sizeof(*dd
));
2983 dd
->major
= major(stb
.st_rdev
);
2984 dd
->minor
= minor(stb
.st_rdev
);
2986 dd
->devname
= devname
? strdup(devname
) : NULL
;
2989 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
2992 Name
": failed to retrieve scsi serial, aborting\n");
2997 get_dev_size(fd
, NULL
, &size
);
2999 serialcpy(dd
->disk
.serial
, dd
->serial
);
3000 dd
->disk
.total_blocks
= __cpu_to_le32(size
);
3001 dd
->disk
.status
= SPARE_DISK
;
3002 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
3003 dd
->disk
.scsi_id
= __cpu_to_le32(id
);
3005 dd
->disk
.scsi_id
= __cpu_to_le32(0);
3007 if (st
->update_tail
) {
3008 dd
->next
= super
->add
;
3011 dd
->next
= super
->disks
;
3018 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
);
3022 struct imsm_super anchor
;
3023 } spare_record
__attribute__ ((aligned(512)));
3025 /* spare records have their own family number and do not have any defined raid
3028 static int write_super_imsm_spares(struct intel_super
*super
, int doclose
)
3030 struct imsm_super
*mpb
= super
->anchor
;
3031 struct imsm_super
*spare
= &spare_record
.anchor
;
3035 spare
->mpb_size
= __cpu_to_le32(sizeof(struct imsm_super
)),
3036 spare
->generation_num
= __cpu_to_le32(1UL),
3037 spare
->attributes
= MPB_ATTRIB_CHECKSUM_VERIFY
;
3038 spare
->num_disks
= 1,
3039 spare
->num_raid_devs
= 0,
3040 spare
->cache_size
= mpb
->cache_size
,
3041 spare
->pwr_cycle_count
= __cpu_to_le32(1),
3043 snprintf((char *) spare
->sig
, MAX_SIGNATURE_LENGTH
,
3044 MPB_SIGNATURE MPB_VERSION_RAID0
);
3046 for (d
= super
->disks
; d
; d
= d
->next
) {
3050 spare
->disk
[0] = d
->disk
;
3051 sum
= __gen_imsm_checksum(spare
);
3052 spare
->family_num
= __cpu_to_le32(sum
);
3053 spare
->orig_family_num
= 0;
3054 sum
= __gen_imsm_checksum(spare
);
3055 spare
->check_sum
= __cpu_to_le32(sum
);
3057 if (store_imsm_mpb(d
->fd
, spare
)) {
3058 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
3059 __func__
, d
->major
, d
->minor
, strerror(errno
));
3071 static int write_super_imsm(struct intel_super
*super
, int doclose
)
3073 struct imsm_super
*mpb
= super
->anchor
;
3079 __u32 mpb_size
= sizeof(struct imsm_super
) - sizeof(struct imsm_disk
);
3081 /* 'generation' is incremented everytime the metadata is written */
3082 generation
= __le32_to_cpu(mpb
->generation_num
);
3084 mpb
->generation_num
= __cpu_to_le32(generation
);
3086 /* fix up cases where previous mdadm releases failed to set
3089 if (mpb
->orig_family_num
== 0)
3090 mpb
->orig_family_num
= mpb
->family_num
;
3092 mpb_size
+= sizeof(struct imsm_disk
) * mpb
->num_disks
;
3093 for (d
= super
->disks
; d
; d
= d
->next
) {
3097 mpb
->disk
[d
->index
] = d
->disk
;
3099 for (d
= super
->missing
; d
; d
= d
->next
)
3100 mpb
->disk
[d
->index
] = d
->disk
;
3102 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
3103 struct imsm_dev
*dev
= __get_imsm_dev(mpb
, i
);
3105 imsm_copy_dev(dev
, get_imsm_dev(super
, i
));
3106 mpb_size
+= sizeof_imsm_dev(dev
, 0);
3108 mpb_size
+= __le32_to_cpu(mpb
->bbm_log_size
);
3109 mpb
->mpb_size
= __cpu_to_le32(mpb_size
);
3111 /* recalculate checksum */
3112 sum
= __gen_imsm_checksum(mpb
);
3113 mpb
->check_sum
= __cpu_to_le32(sum
);
3115 /* write the mpb for disks that compose raid devices */
3116 for (d
= super
->disks
; d
; d
= d
->next
) {
3119 if (store_imsm_mpb(d
->fd
, mpb
))
3120 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
3121 __func__
, d
->major
, d
->minor
, strerror(errno
));
3129 return write_super_imsm_spares(super
, doclose
);
3135 static int create_array(struct supertype
*st
, int dev_idx
)
3138 struct imsm_update_create_array
*u
;
3139 struct intel_super
*super
= st
->sb
;
3140 struct imsm_dev
*dev
= get_imsm_dev(super
, dev_idx
);
3141 struct imsm_map
*map
= get_imsm_map(dev
, 0);
3142 struct disk_info
*inf
;
3143 struct imsm_disk
*disk
;
3146 len
= sizeof(*u
) - sizeof(*dev
) + sizeof_imsm_dev(dev
, 0) +
3147 sizeof(*inf
) * map
->num_members
;
3150 fprintf(stderr
, "%s: failed to allocate update buffer\n",
3155 u
->type
= update_create_array
;
3156 u
->dev_idx
= dev_idx
;
3157 imsm_copy_dev(&u
->dev
, dev
);
3158 inf
= get_disk_info(u
);
3159 for (i
= 0; i
< map
->num_members
; i
++) {
3160 int idx
= get_imsm_disk_idx(dev
, i
);
3162 disk
= get_imsm_disk(super
, idx
);
3163 serialcpy(inf
[i
].serial
, disk
->serial
);
3165 append_metadata_update(st
, u
, len
);
3170 static int _add_disk(struct supertype
*st
)
3172 struct intel_super
*super
= st
->sb
;
3174 struct imsm_update_add_disk
*u
;
3182 fprintf(stderr
, "%s: failed to allocate update buffer\n",
3187 u
->type
= update_add_disk
;
3188 append_metadata_update(st
, u
, len
);
3193 static int write_init_super_imsm(struct supertype
*st
)
3195 struct intel_super
*super
= st
->sb
;
3196 int current_vol
= super
->current_vol
;
3198 /* we are done with current_vol reset it to point st at the container */
3199 super
->current_vol
= -1;
3201 if (st
->update_tail
) {
3202 /* queue the recently created array / added disk
3203 * as a metadata update */
3207 /* determine if we are creating a volume or adding a disk */
3208 if (current_vol
< 0) {
3209 /* in the add disk case we are running in mdmon
3210 * context, so don't close fd's
3212 return _add_disk(st
);
3214 rv
= create_array(st
, current_vol
);
3216 for (d
= super
->disks
; d
; d
= d
->next
) {
3223 return write_super_imsm(st
->sb
, 1);
3227 static int store_super_imsm(struct supertype
*st
, int fd
)
3229 struct intel_super
*super
= st
->sb
;
3230 struct imsm_super
*mpb
= super
? super
->anchor
: NULL
;
3236 return store_imsm_mpb(fd
, mpb
);
3242 static int imsm_bbm_log_size(struct imsm_super
*mpb
)
3244 return __le32_to_cpu(mpb
->bbm_log_size
);
3248 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
3249 int layout
, int raiddisks
, int chunk
,
3250 unsigned long long size
, char *dev
,
3251 unsigned long long *freesize
,
3255 unsigned long long ldsize
;
3256 const struct imsm_orom
*orom
;
3258 if (level
!= LEVEL_CONTAINER
)
3263 if (check_env("IMSM_NO_PLATFORM"))
3266 orom
= find_imsm_orom();
3267 if (orom
&& raiddisks
> orom
->tds
) {
3269 fprintf(stderr
, Name
": %d exceeds maximum number of"
3270 " platform supported disks: %d\n",
3271 raiddisks
, orom
->tds
);
3275 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
3278 fprintf(stderr
, Name
": imsm: Cannot open %s: %s\n",
3279 dev
, strerror(errno
));
3282 if (!get_dev_size(fd
, dev
, &ldsize
)) {
3288 *freesize
= avail_size_imsm(st
, ldsize
>> 9);
3293 static unsigned long long find_size(struct extent
*e
, int *idx
, int num_extents
)
3295 const unsigned long long base_start
= e
[*idx
].start
;
3296 unsigned long long end
= base_start
+ e
[*idx
].size
;
3299 if (base_start
== end
)
3303 for (i
= *idx
; i
< num_extents
; i
++) {
3304 /* extend overlapping extents */
3305 if (e
[i
].start
>= base_start
&&
3306 e
[i
].start
<= end
) {
3309 if (e
[i
].start
+ e
[i
].size
> end
)
3310 end
= e
[i
].start
+ e
[i
].size
;
3311 } else if (e
[i
].start
> end
) {
3317 return end
- base_start
;
3320 static unsigned long long merge_extents(struct intel_super
*super
, int sum_extents
)
3322 /* build a composite disk with all known extents and generate a new
3323 * 'maxsize' given the "all disks in an array must share a common start
3324 * offset" constraint
3326 struct extent
*e
= calloc(sum_extents
, sizeof(*e
));
3330 unsigned long long pos
;
3331 unsigned long long start
= 0;
3332 unsigned long long maxsize
;
3333 unsigned long reserve
;
3336 return ~0ULL; /* error */
3338 /* coalesce and sort all extents. also, check to see if we need to
3339 * reserve space between member arrays
3342 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
3345 for (i
= 0; i
< dl
->extent_cnt
; i
++)
3348 qsort(e
, sum_extents
, sizeof(*e
), cmp_extent
);
3353 while (i
< sum_extents
) {
3354 e
[j
].start
= e
[i
].start
;
3355 e
[j
].size
= find_size(e
, &i
, sum_extents
);
3357 if (e
[j
-1].size
== 0)
3366 unsigned long long esize
;
3368 esize
= e
[i
].start
- pos
;
3369 if (esize
>= maxsize
) {
3374 pos
= e
[i
].start
+ e
[i
].size
;
3376 } while (e
[i
-1].size
);
3379 if (start_extent
> 0)
3380 reserve
= IMSM_RESERVED_SECTORS
; /* gap between raid regions */
3384 if (maxsize
< reserve
)
3387 super
->create_offset
= ~((__u32
) 0);
3388 if (start
+ reserve
> super
->create_offset
)
3389 return ~0ULL; /* start overflows create_offset */
3390 super
->create_offset
= start
+ reserve
;
3392 return maxsize
- reserve
;
3395 static int is_raid_level_supported(const struct imsm_orom
*orom
, int level
, int raiddisks
)
3397 if (level
< 0 || level
== 6 || level
== 4)
3400 /* if we have an orom prevent invalid raid levels */
3403 case 0: return imsm_orom_has_raid0(orom
);
3406 return imsm_orom_has_raid1e(orom
);
3407 return imsm_orom_has_raid1(orom
) && raiddisks
== 2;
3408 case 10: return imsm_orom_has_raid10(orom
) && raiddisks
== 4;
3409 case 5: return imsm_orom_has_raid5(orom
) && raiddisks
> 2;
3412 return 1; /* not on an Intel RAID platform so anything goes */
3417 #define pr_vrb(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg))
3418 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
3419 * FIX ME add ahci details
3421 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
3422 int layout
, int raiddisks
, int chunk
,
3423 unsigned long long size
, char *dev
,
3424 unsigned long long *freesize
,
3428 struct intel_super
*super
= st
->sb
;
3429 struct imsm_super
*mpb
= super
->anchor
;
3431 unsigned long long pos
= 0;
3432 unsigned long long maxsize
;
3436 /* We must have the container info already read in. */
3440 if (!is_raid_level_supported(super
->orom
, level
, raiddisks
)) {
3441 pr_vrb(": platform does not support raid%d with %d disk%s\n",
3442 level
, raiddisks
, raiddisks
> 1 ? "s" : "");
3445 if (super
->orom
&& level
!= 1 &&
3446 !imsm_orom_has_chunk(super
->orom
, chunk
)) {
3447 pr_vrb(": platform does not support a chunk size of: %d\n", chunk
);
3450 if (layout
!= imsm_level_to_layout(level
)) {
3452 pr_vrb(": imsm raid 5 only supports the left-asymmetric layout\n");
3453 else if (level
== 10)
3454 pr_vrb(": imsm raid 10 only supports the n2 layout\n");
3456 pr_vrb(": imsm unknown layout %#x for this raid level %d\n",
3462 /* General test: make sure there is space for
3463 * 'raiddisks' device extents of size 'size' at a given
3466 unsigned long long minsize
= size
;
3467 unsigned long long start_offset
= ~0ULL;
3470 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
3471 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
3476 e
= get_extents(super
, dl
);
3479 unsigned long long esize
;
3480 esize
= e
[i
].start
- pos
;
3481 if (esize
>= minsize
)
3483 if (found
&& start_offset
== ~0ULL) {
3486 } else if (found
&& pos
!= start_offset
) {
3490 pos
= e
[i
].start
+ e
[i
].size
;
3492 } while (e
[i
-1].size
);
3497 if (dcnt
< raiddisks
) {
3499 fprintf(stderr
, Name
": imsm: Not enough "
3500 "devices with space for this array "
3508 /* This device must be a member of the set */
3509 if (stat(dev
, &stb
) < 0)
3511 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
3513 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
3514 if (dl
->major
== major(stb
.st_rdev
) &&
3515 dl
->minor
== minor(stb
.st_rdev
))
3520 fprintf(stderr
, Name
": %s is not in the "
3521 "same imsm set\n", dev
);
3523 } else if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
) {
3524 /* If a volume is present then the current creation attempt
3525 * cannot incorporate new spares because the orom may not
3526 * understand this configuration (all member disks must be
3527 * members of each array in the container).
3529 fprintf(stderr
, Name
": %s is a spare and a volume"
3530 " is already defined for this container\n", dev
);
3531 fprintf(stderr
, Name
": The option-rom requires all member"
3532 " disks to be a member of all volumes\n");
3536 /* retrieve the largest free space block */
3537 e
= get_extents(super
, dl
);
3542 unsigned long long esize
;
3544 esize
= e
[i
].start
- pos
;
3545 if (esize
>= maxsize
)
3547 pos
= e
[i
].start
+ e
[i
].size
;
3549 } while (e
[i
-1].size
);
3554 fprintf(stderr
, Name
": unable to determine free space for: %s\n",
3558 if (maxsize
< size
) {
3560 fprintf(stderr
, Name
": %s not enough space (%llu < %llu)\n",
3561 dev
, maxsize
, size
);
3565 /* count total number of extents for merge */
3567 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
3569 i
+= dl
->extent_cnt
;
3571 maxsize
= merge_extents(super
, i
);
3572 if (maxsize
< size
) {
3574 fprintf(stderr
, Name
": not enough space after merge (%llu < %llu)\n",
3577 } else if (maxsize
== ~0ULL) {
3579 fprintf(stderr
, Name
": failed to merge %d extents\n", i
);
3583 *freesize
= maxsize
;
3588 static int reserve_space(struct supertype
*st
, int raiddisks
,
3589 unsigned long long size
, int chunk
,
3590 unsigned long long *freesize
)
3592 struct intel_super
*super
= st
->sb
;
3593 struct imsm_super
*mpb
= super
->anchor
;
3598 unsigned long long maxsize
;
3599 unsigned long long minsize
;
3603 /* find the largest common start free region of the possible disks */
3607 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
3613 /* don't activate new spares if we are orom constrained
3614 * and there is already a volume active in the container
3616 if (super
->orom
&& dl
->index
< 0 && mpb
->num_raid_devs
)
3619 e
= get_extents(super
, dl
);
3622 for (i
= 1; e
[i
-1].size
; i
++)
3630 maxsize
= merge_extents(super
, extent_cnt
);
3635 if (cnt
< raiddisks
||
3636 (super
->orom
&& used
&& used
!= raiddisks
) ||
3637 maxsize
< minsize
) {
3638 fprintf(stderr
, Name
": not enough devices with space to create array.\n");
3639 return 0; /* No enough free spaces large enough */
3651 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
3653 dl
->raiddisk
= cnt
++;
3660 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
3661 int raiddisks
, int chunk
, unsigned long long size
,
3662 char *dev
, unsigned long long *freesize
,
3668 /* if given unused devices create a container
3669 * if given given devices in a container create a member volume
3671 if (level
== LEVEL_CONTAINER
) {
3672 /* Must be a fresh device to add to a container */
3673 return validate_geometry_imsm_container(st
, level
, layout
,
3674 raiddisks
, chunk
, size
,
3680 if (st
->sb
&& freesize
) {
3681 /* we are being asked to automatically layout a
3682 * new volume based on the current contents of
3683 * the container. If the the parameters can be
3684 * satisfied reserve_space will record the disks,
3685 * start offset, and size of the volume to be
3686 * created. add_to_super and getinfo_super
3687 * detect when autolayout is in progress.
3689 return reserve_space(st
, raiddisks
, size
, chunk
, freesize
);
3694 /* creating in a given container */
3695 return validate_geometry_imsm_volume(st
, level
, layout
,
3696 raiddisks
, chunk
, size
,
3697 dev
, freesize
, verbose
);
3700 /* limit creation to the following levels */
3712 /* This device needs to be a device in an 'imsm' container */
3713 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
3717 Name
": Cannot create this array on device %s\n",
3722 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
3724 fprintf(stderr
, Name
": Cannot open %s: %s\n",
3725 dev
, strerror(errno
));
3728 /* Well, it is in use by someone, maybe an 'imsm' container. */
3729 cfd
= open_container(fd
);
3733 fprintf(stderr
, Name
": Cannot use %s: It is busy\n",
3737 sra
= sysfs_read(cfd
, 0, GET_VERSION
);
3739 if (sra
&& sra
->array
.major_version
== -1 &&
3740 strcmp(sra
->text_version
, "imsm") == 0) {
3741 /* This is a member of a imsm container. Load the container
3742 * and try to create a volume
3744 struct intel_super
*super
;
3746 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
, 1) == 0) {
3748 st
->container_dev
= fd2devnum(cfd
);
3750 return validate_geometry_imsm_volume(st
, level
, layout
,
3756 } else /* may belong to another container */
3761 #endif /* MDASSEMBLE */
3763 static struct mdinfo
*container_content_imsm(struct supertype
*st
)
3765 /* Given a container loaded by load_super_imsm_all,
3766 * extract information about all the arrays into
3769 * For each imsm_dev create an mdinfo, fill it in,
3770 * then look for matching devices in super->disks
3771 * and create appropriate device mdinfo.
3773 struct intel_super
*super
= st
->sb
;
3774 struct imsm_super
*mpb
= super
->anchor
;
3775 struct mdinfo
*rest
= NULL
;
3778 /* do not assemble arrays that might have bad blocks */
3779 if (imsm_bbm_log_size(super
->anchor
)) {
3780 fprintf(stderr
, Name
": BBM log found in metadata. "
3781 "Cannot activate array(s).\n");
3785 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
3786 struct imsm_dev
*dev
= get_imsm_dev(super
, i
);
3787 struct imsm_map
*map
= get_imsm_map(dev
, 0);
3788 struct mdinfo
*this;
3791 /* do not publish arrays that are in the middle of an
3792 * unsupported migration
3794 if (dev
->vol
.migr_state
&&
3795 (migr_type(dev
) == MIGR_GEN_MIGR
||
3796 migr_type(dev
) == MIGR_STATE_CHANGE
)) {
3797 fprintf(stderr
, Name
": cannot assemble volume '%.16s':"
3798 " unsupported migration in progress\n",
3803 this = malloc(sizeof(*this));
3804 memset(this, 0, sizeof(*this));
3807 super
->current_vol
= i
;
3808 getinfo_super_imsm_volume(st
, this);
3809 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
3810 struct mdinfo
*info_d
;
3817 idx
= get_imsm_disk_idx(dev
, slot
);
3818 ord
= get_imsm_ord_tbl_ent(dev
, slot
);
3819 for (d
= super
->disks
; d
; d
= d
->next
)
3820 if (d
->index
== idx
)
3825 if (d
&& is_failed(&d
->disk
))
3827 if (ord
& IMSM_ORD_REBUILD
)
3831 * if we skip some disks the array will be assmebled degraded;
3832 * reset resync start to avoid a dirty-degraded situation
3834 * FIXME handle dirty degraded
3836 if (skip
&& !dev
->vol
.dirty
)
3837 this->resync_start
= ~0ULL;
3841 info_d
= malloc(sizeof(*info_d
));
3843 fprintf(stderr
, Name
": failed to allocate disk"
3844 " for volume %.16s\n", dev
->volume
);
3849 memset(info_d
, 0, sizeof(*info_d
));
3850 info_d
->next
= this->devs
;
3851 this->devs
= info_d
;
3853 info_d
->disk
.number
= d
->index
;
3854 info_d
->disk
.major
= d
->major
;
3855 info_d
->disk
.minor
= d
->minor
;
3856 info_d
->disk
.raid_disk
= slot
;
3858 this->array
.working_disks
++;
3860 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
3861 info_d
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
3862 info_d
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
3864 strcpy(info_d
->name
, d
->devname
);
3874 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
3877 struct intel_super
*super
= c
->sb
;
3878 struct imsm_super
*mpb
= super
->anchor
;
3880 if (atoi(inst
) >= mpb
->num_raid_devs
) {
3881 fprintf(stderr
, "%s: subarry index %d, out of range\n",
3882 __func__
, atoi(inst
));
3886 dprintf("imsm: open_new %s\n", inst
);
3887 a
->info
.container_member
= atoi(inst
);
3891 static __u8
imsm_check_degraded(struct intel_super
*super
, struct imsm_dev
*dev
, int failed
)
3893 struct imsm_map
*map
= get_imsm_map(dev
, 0);
3896 return map
->map_state
== IMSM_T_STATE_UNINITIALIZED
?
3897 IMSM_T_STATE_UNINITIALIZED
: IMSM_T_STATE_NORMAL
;
3899 switch (get_imsm_raid_level(map
)) {
3901 return IMSM_T_STATE_FAILED
;
3904 if (failed
< map
->num_members
)
3905 return IMSM_T_STATE_DEGRADED
;
3907 return IMSM_T_STATE_FAILED
;
3912 * check to see if any mirrors have failed, otherwise we
3913 * are degraded. Even numbered slots are mirrored on
3917 /* gcc -Os complains that this is unused */
3918 int insync
= insync
;
3920 for (i
= 0; i
< map
->num_members
; i
++) {
3921 __u32 ord
= get_imsm_ord_tbl_ent(dev
, i
);
3922 int idx
= ord_to_idx(ord
);
3923 struct imsm_disk
*disk
;
3925 /* reset the potential in-sync count on even-numbered
3926 * slots. num_copies is always 2 for imsm raid10
3931 disk
= get_imsm_disk(super
, idx
);
3932 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
3935 /* no in-sync disks left in this mirror the
3939 return IMSM_T_STATE_FAILED
;
3942 return IMSM_T_STATE_DEGRADED
;
3946 return IMSM_T_STATE_DEGRADED
;
3948 return IMSM_T_STATE_FAILED
;
3954 return map
->map_state
;
3957 static int imsm_count_failed(struct intel_super
*super
, struct imsm_dev
*dev
)
3961 struct imsm_disk
*disk
;
3962 struct imsm_map
*map
= get_imsm_map(dev
, 0);
3963 struct imsm_map
*prev
= get_imsm_map(dev
, dev
->vol
.migr_state
);
3967 /* at the beginning of migration we set IMSM_ORD_REBUILD on
3968 * disks that are being rebuilt. New failures are recorded to
3969 * map[0]. So we look through all the disks we started with and
3970 * see if any failures are still present, or if any new ones
3973 * FIXME add support for online capacity expansion and
3974 * raid-level-migration
3976 for (i
= 0; i
< prev
->num_members
; i
++) {
3977 ord
= __le32_to_cpu(prev
->disk_ord_tbl
[i
]);
3978 ord
|= __le32_to_cpu(map
->disk_ord_tbl
[i
]);
3979 idx
= ord_to_idx(ord
);
3981 disk
= get_imsm_disk(super
, idx
);
3982 if (!disk
|| is_failed(disk
) || ord
& IMSM_ORD_REBUILD
)
3989 static int is_resyncing(struct imsm_dev
*dev
)
3991 struct imsm_map
*migr_map
;
3993 if (!dev
->vol
.migr_state
)
3996 if (migr_type(dev
) == MIGR_INIT
||
3997 migr_type(dev
) == MIGR_REPAIR
)
4000 migr_map
= get_imsm_map(dev
, 1);
4002 if (migr_map
->map_state
== IMSM_T_STATE_NORMAL
)
4008 static int is_rebuilding(struct imsm_dev
*dev
)
4010 struct imsm_map
*migr_map
;
4012 if (!dev
->vol
.migr_state
)
4015 if (migr_type(dev
) != MIGR_REBUILD
)
4018 migr_map
= get_imsm_map(dev
, 1);
4020 if (migr_map
->map_state
== IMSM_T_STATE_DEGRADED
)
4026 /* return true if we recorded new information */
4027 static int mark_failure(struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
4031 struct imsm_map
*map
;
4033 /* new failures are always set in map[0] */
4034 map
= get_imsm_map(dev
, 0);
4036 slot
= get_imsm_disk_slot(map
, idx
);
4040 ord
= __le32_to_cpu(map
->disk_ord_tbl
[slot
]);
4041 if (is_failed(disk
) && (ord
& IMSM_ORD_REBUILD
))
4044 disk
->status
|= FAILED_DISK
;
4045 disk
->status
&= ~CONFIGURED_DISK
;
4046 set_imsm_ord_tbl_ent(map
, slot
, idx
| IMSM_ORD_REBUILD
);
4047 if (~map
->failed_disk_num
== 0)
4048 map
->failed_disk_num
= slot
;
4052 static void mark_missing(struct imsm_dev
*dev
, struct imsm_disk
*disk
, int idx
)
4054 mark_failure(dev
, disk
, idx
);
4056 if (disk
->scsi_id
== __cpu_to_le32(~(__u32
)0))
4059 disk
->scsi_id
= __cpu_to_le32(~(__u32
)0);
4060 memmove(&disk
->serial
[0], &disk
->serial
[1], MAX_RAID_SERIAL_LEN
- 1);
4063 /* Handle dirty -> clean transititions and resync. Degraded and rebuild
4064 * states are handled in imsm_set_disk() with one exception, when a
4065 * resync is stopped due to a new failure this routine will set the
4066 * 'degraded' state for the array.
4068 static int imsm_set_array_state(struct active_array
*a
, int consistent
)
4070 int inst
= a
->info
.container_member
;
4071 struct intel_super
*super
= a
->container
->sb
;
4072 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
4073 struct imsm_map
*map
= get_imsm_map(dev
, 0);
4074 int failed
= imsm_count_failed(super
, dev
);
4075 __u8 map_state
= imsm_check_degraded(super
, dev
, failed
);
4077 /* before we activate this array handle any missing disks */
4078 if (consistent
== 2 && super
->missing
) {
4081 dprintf("imsm: mark missing\n");
4082 end_migration(dev
, map_state
);
4083 for (dl
= super
->missing
; dl
; dl
= dl
->next
)
4084 mark_missing(dev
, &dl
->disk
, dl
->index
);
4085 super
->updates_pending
++;
4088 if (consistent
== 2 &&
4089 (!is_resync_complete(a
) ||
4090 map_state
!= IMSM_T_STATE_NORMAL
||
4091 dev
->vol
.migr_state
))
4094 if (is_resync_complete(a
)) {
4095 /* complete intialization / resync,
4096 * recovery and interrupted recovery is completed in
4099 if (is_resyncing(dev
)) {
4100 dprintf("imsm: mark resync done\n");
4101 end_migration(dev
, map_state
);
4102 super
->updates_pending
++;
4104 } else if (!is_resyncing(dev
) && !failed
) {
4105 /* mark the start of the init process if nothing is failed */
4106 dprintf("imsm: mark resync start (%llu)\n", a
->resync_start
);
4107 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
)
4108 migrate(dev
, IMSM_T_STATE_NORMAL
, MIGR_INIT
);
4110 migrate(dev
, IMSM_T_STATE_NORMAL
, MIGR_REPAIR
);
4111 super
->updates_pending
++;
4114 /* FIXME check if we can update curr_migr_unit from resync_start */
4116 /* mark dirty / clean */
4117 if (dev
->vol
.dirty
!= !consistent
) {
4118 dprintf("imsm: mark '%s' (%llu)\n",
4119 consistent
? "clean" : "dirty", a
->resync_start
);
4124 super
->updates_pending
++;
4129 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
4131 int inst
= a
->info
.container_member
;
4132 struct intel_super
*super
= a
->container
->sb
;
4133 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
4134 struct imsm_map
*map
= get_imsm_map(dev
, 0);
4135 struct imsm_disk
*disk
;
4140 if (n
> map
->num_members
)
4141 fprintf(stderr
, "imsm: set_disk %d out of range 0..%d\n",
4142 n
, map
->num_members
- 1);
4147 dprintf("imsm: set_disk %d:%x\n", n
, state
);
4149 ord
= get_imsm_ord_tbl_ent(dev
, n
);
4150 disk
= get_imsm_disk(super
, ord_to_idx(ord
));
4152 /* check for new failures */
4153 if (state
& DS_FAULTY
) {
4154 if (mark_failure(dev
, disk
, ord_to_idx(ord
)))
4155 super
->updates_pending
++;
4158 /* check if in_sync */
4159 if (state
& DS_INSYNC
&& ord
& IMSM_ORD_REBUILD
&& is_rebuilding(dev
)) {
4160 struct imsm_map
*migr_map
= get_imsm_map(dev
, 1);
4162 set_imsm_ord_tbl_ent(migr_map
, n
, ord_to_idx(ord
));
4163 super
->updates_pending
++;
4166 failed
= imsm_count_failed(super
, dev
);
4167 map_state
= imsm_check_degraded(super
, dev
, failed
);
4169 /* check if recovery complete, newly degraded, or failed */
4170 if (map_state
== IMSM_T_STATE_NORMAL
&& is_rebuilding(dev
)) {
4171 end_migration(dev
, map_state
);
4172 map
= get_imsm_map(dev
, 0);
4173 map
->failed_disk_num
= ~0;
4174 super
->updates_pending
++;
4175 } else if (map_state
== IMSM_T_STATE_DEGRADED
&&
4176 map
->map_state
!= map_state
&&
4177 !dev
->vol
.migr_state
) {
4178 dprintf("imsm: mark degraded\n");
4179 map
->map_state
= map_state
;
4180 super
->updates_pending
++;
4181 } else if (map_state
== IMSM_T_STATE_FAILED
&&
4182 map
->map_state
!= map_state
) {
4183 dprintf("imsm: mark failed\n");
4184 end_migration(dev
, map_state
);
4185 super
->updates_pending
++;
4189 static int store_imsm_mpb(int fd
, struct imsm_super
*mpb
)
4192 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
4193 unsigned long long dsize
;
4194 unsigned long long sectors
;
4196 get_dev_size(fd
, NULL
, &dsize
);
4198 if (mpb_size
> 512) {
4199 /* -1 to account for anchor */
4200 sectors
= mpb_sectors(mpb
) - 1;
4202 /* write the extended mpb to the sectors preceeding the anchor */
4203 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0)
4206 if (write(fd
, buf
+ 512, 512 * sectors
) != 512 * sectors
)
4210 /* first block is stored on second to last sector of the disk */
4211 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
4214 if (write(fd
, buf
, 512) != 512)
4220 static void imsm_sync_metadata(struct supertype
*container
)
4222 struct intel_super
*super
= container
->sb
;
4224 if (!super
->updates_pending
)
4227 write_super_imsm(super
, 0);
4229 super
->updates_pending
= 0;
4232 static struct dl
*imsm_readd(struct intel_super
*super
, int idx
, struct active_array
*a
)
4234 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
4235 int i
= get_imsm_disk_idx(dev
, idx
);
4238 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
4242 if (dl
&& is_failed(&dl
->disk
))
4246 dprintf("%s: found %x:%x\n", __func__
, dl
->major
, dl
->minor
);
4251 static struct dl
*imsm_add_spare(struct intel_super
*super
, int slot
,
4252 struct active_array
*a
, int activate_new
)
4254 struct imsm_dev
*dev
= get_imsm_dev(super
, a
->info
.container_member
);
4255 int idx
= get_imsm_disk_idx(dev
, slot
);
4256 struct imsm_super
*mpb
= super
->anchor
;
4257 struct imsm_map
*map
;
4258 unsigned long long pos
;
4267 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
4268 /* If in this array, skip */
4269 for (d
= a
->info
.devs
; d
; d
= d
->next
)
4270 if (d
->state_fd
>= 0 &&
4271 d
->disk
.major
== dl
->major
&&
4272 d
->disk
.minor
== dl
->minor
) {
4273 dprintf("%x:%x already in array\n", dl
->major
, dl
->minor
);
4279 /* skip in use or failed drives */
4280 if (is_failed(&dl
->disk
) || idx
== dl
->index
||
4282 dprintf("%x:%x status (failed: %d index: %d)\n",
4283 dl
->major
, dl
->minor
, is_failed(&dl
->disk
), idx
);
4287 /* skip pure spares when we are looking for partially
4288 * assimilated drives
4290 if (dl
->index
== -1 && !activate_new
)
4293 /* Does this unused device have the requisite free space?
4294 * It needs to be able to cover all member volumes
4296 ex
= get_extents(super
, dl
);
4298 dprintf("cannot get extents\n");
4301 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4302 dev
= get_imsm_dev(super
, i
);
4303 map
= get_imsm_map(dev
, 0);
4305 /* check if this disk is already a member of
4308 if (get_imsm_disk_slot(map
, dl
->index
) >= 0)
4314 array_start
= __le32_to_cpu(map
->pba_of_lba0
);
4315 array_end
= array_start
+
4316 __le32_to_cpu(map
->blocks_per_member
) - 1;
4319 /* check that we can start at pba_of_lba0 with
4320 * blocks_per_member of space
4322 if (array_start
>= pos
&& array_end
< ex
[j
].start
) {
4326 pos
= ex
[j
].start
+ ex
[j
].size
;
4328 } while (ex
[j
-1].size
);
4335 if (i
< mpb
->num_raid_devs
) {
4336 dprintf("%x:%x does not have %u to %u available\n",
4337 dl
->major
, dl
->minor
, array_start
, array_end
);
4347 static struct mdinfo
*imsm_activate_spare(struct active_array
*a
,
4348 struct metadata_update
**updates
)
4351 * Find a device with unused free space and use it to replace a
4352 * failed/vacant region in an array. We replace failed regions one a
4353 * array at a time. The result is that a new spare disk will be added
4354 * to the first failed array and after the monitor has finished
4355 * propagating failures the remainder will be consumed.
4357 * FIXME add a capability for mdmon to request spares from another
4361 struct intel_super
*super
= a
->container
->sb
;
4362 int inst
= a
->info
.container_member
;
4363 struct imsm_dev
*dev
= get_imsm_dev(super
, inst
);
4364 struct imsm_map
*map
= get_imsm_map(dev
, 0);
4365 int failed
= a
->info
.array
.raid_disks
;
4366 struct mdinfo
*rv
= NULL
;
4369 struct metadata_update
*mu
;
4371 struct imsm_update_activate_spare
*u
;
4375 for (d
= a
->info
.devs
; d
; d
= d
->next
) {
4376 if ((d
->curr_state
& DS_FAULTY
) &&
4378 /* wait for Removal to happen */
4380 if (d
->state_fd
>= 0)
4384 dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
4385 inst
, failed
, a
->info
.array
.raid_disks
, a
->info
.array
.level
);
4386 if (imsm_check_degraded(super
, dev
, failed
) != IMSM_T_STATE_DEGRADED
)
4389 /* For each slot, if it is not working, find a spare */
4390 for (i
= 0; i
< a
->info
.array
.raid_disks
; i
++) {
4391 for (d
= a
->info
.devs
; d
; d
= d
->next
)
4392 if (d
->disk
.raid_disk
== i
)
4394 dprintf("found %d: %p %x\n", i
, d
, d
?d
->curr_state
:0);
4395 if (d
&& (d
->state_fd
>= 0))
4399 * OK, this device needs recovery. Try to re-add the
4400 * previous occupant of this slot, if this fails see if
4401 * we can continue the assimilation of a spare that was
4402 * partially assimilated, finally try to activate a new
4405 dl
= imsm_readd(super
, i
, a
);
4407 dl
= imsm_add_spare(super
, i
, a
, 0);
4409 dl
= imsm_add_spare(super
, i
, a
, 1);
4413 /* found a usable disk with enough space */
4414 di
= malloc(sizeof(*di
));
4417 memset(di
, 0, sizeof(*di
));
4419 /* dl->index will be -1 in the case we are activating a
4420 * pristine spare. imsm_process_update() will create a
4421 * new index in this case. Once a disk is found to be
4422 * failed in all member arrays it is kicked from the
4425 di
->disk
.number
= dl
->index
;
4427 /* (ab)use di->devs to store a pointer to the device
4430 di
->devs
= (struct mdinfo
*) dl
;
4432 di
->disk
.raid_disk
= i
;
4433 di
->disk
.major
= dl
->major
;
4434 di
->disk
.minor
= dl
->minor
;
4436 di
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
4437 di
->component_size
= a
->info
.component_size
;
4438 di
->container_member
= inst
;
4439 super
->random
= random32();
4443 dprintf("%x:%x to be %d at %llu\n", dl
->major
, dl
->minor
,
4444 i
, di
->data_offset
);
4450 /* No spares found */
4452 /* Now 'rv' has a list of devices to return.
4453 * Create a metadata_update record to update the
4454 * disk_ord_tbl for the array
4456 mu
= malloc(sizeof(*mu
));
4458 mu
->buf
= malloc(sizeof(struct imsm_update_activate_spare
) * num_spares
);
4459 if (mu
->buf
== NULL
) {
4466 struct mdinfo
*n
= rv
->next
;
4475 mu
->len
= sizeof(struct imsm_update_activate_spare
) * num_spares
;
4476 mu
->next
= *updates
;
4477 u
= (struct imsm_update_activate_spare
*) mu
->buf
;
4479 for (di
= rv
; di
; di
= di
->next
) {
4480 u
->type
= update_activate_spare
;
4481 u
->dl
= (struct dl
*) di
->devs
;
4483 u
->slot
= di
->disk
.raid_disk
;
4494 static int disks_overlap(struct intel_super
*super
, int idx
, struct imsm_update_create_array
*u
)
4496 struct imsm_dev
*dev
= get_imsm_dev(super
, idx
);
4497 struct imsm_map
*map
= get_imsm_map(dev
, 0);
4498 struct imsm_map
*new_map
= get_imsm_map(&u
->dev
, 0);
4499 struct disk_info
*inf
= get_disk_info(u
);
4500 struct imsm_disk
*disk
;
4504 for (i
= 0; i
< map
->num_members
; i
++) {
4505 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
));
4506 for (j
= 0; j
< new_map
->num_members
; j
++)
4507 if (serialcmp(disk
->serial
, inf
[j
].serial
) == 0)
4514 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, int index
);
4516 static void imsm_process_update(struct supertype
*st
,
4517 struct metadata_update
*update
)
4520 * crack open the metadata_update envelope to find the update record
4521 * update can be one of:
4522 * update_activate_spare - a spare device has replaced a failed
4523 * device in an array, update the disk_ord_tbl. If this disk is
4524 * present in all member arrays then also clear the SPARE_DISK
4527 struct intel_super
*super
= st
->sb
;
4528 struct imsm_super
*mpb
;
4529 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
4531 /* update requires a larger buf but the allocation failed */
4532 if (super
->next_len
&& !super
->next_buf
) {
4533 super
->next_len
= 0;
4537 if (super
->next_buf
) {
4538 memcpy(super
->next_buf
, super
->buf
, super
->len
);
4540 super
->len
= super
->next_len
;
4541 super
->buf
= super
->next_buf
;
4543 super
->next_len
= 0;
4544 super
->next_buf
= NULL
;
4547 mpb
= super
->anchor
;
4550 case update_activate_spare
: {
4551 struct imsm_update_activate_spare
*u
= (void *) update
->buf
;
4552 struct imsm_dev
*dev
= get_imsm_dev(super
, u
->array
);
4553 struct imsm_map
*map
= get_imsm_map(dev
, 0);
4554 struct imsm_map
*migr_map
;
4555 struct active_array
*a
;
4556 struct imsm_disk
*disk
;
4561 int victim
= get_imsm_disk_idx(dev
, u
->slot
);
4564 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
4569 fprintf(stderr
, "error: imsm_activate_spare passed "
4570 "an unknown disk (index: %d)\n",
4575 super
->updates_pending
++;
4577 /* count failures (excluding rebuilds and the victim)
4578 * to determine map[0] state
4581 for (i
= 0; i
< map
->num_members
; i
++) {
4584 disk
= get_imsm_disk(super
, get_imsm_disk_idx(dev
, i
));
4585 if (!disk
|| is_failed(disk
))
4589 /* adding a pristine spare, assign a new index */
4590 if (dl
->index
< 0) {
4591 dl
->index
= super
->anchor
->num_disks
;
4592 super
->anchor
->num_disks
++;
4595 disk
->status
|= CONFIGURED_DISK
;
4596 disk
->status
&= ~SPARE_DISK
;
4599 to_state
= imsm_check_degraded(super
, dev
, failed
);
4600 map
->map_state
= IMSM_T_STATE_DEGRADED
;
4601 migrate(dev
, to_state
, MIGR_REBUILD
);
4602 migr_map
= get_imsm_map(dev
, 1);
4603 set_imsm_ord_tbl_ent(map
, u
->slot
, dl
->index
);
4604 set_imsm_ord_tbl_ent(migr_map
, u
->slot
, dl
->index
| IMSM_ORD_REBUILD
);
4606 /* update the family_num to mark a new container
4607 * generation, being careful to record the existing
4608 * family_num in orig_family_num to clean up after
4609 * earlier mdadm versions that neglected to set it.
4611 if (mpb
->orig_family_num
== 0)
4612 mpb
->orig_family_num
= mpb
->family_num
;
4613 mpb
->family_num
+= super
->random
;
4615 /* count arrays using the victim in the metadata */
4617 for (a
= st
->arrays
; a
; a
= a
->next
) {
4618 dev
= get_imsm_dev(super
, a
->info
.container_member
);
4619 map
= get_imsm_map(dev
, 0);
4621 if (get_imsm_disk_slot(map
, victim
) >= 0)
4625 /* delete the victim if it is no longer being
4631 /* We know that 'manager' isn't touching anything,
4632 * so it is safe to delete
4634 for (dlp
= &super
->disks
; *dlp
; dlp
= &(*dlp
)->next
)
4635 if ((*dlp
)->index
== victim
)
4638 /* victim may be on the missing list */
4640 for (dlp
= &super
->missing
; *dlp
; dlp
= &(*dlp
)->next
)
4641 if ((*dlp
)->index
== victim
)
4643 imsm_delete(super
, dlp
, victim
);
4647 case update_create_array
: {
4648 /* someone wants to create a new array, we need to be aware of
4649 * a few races/collisions:
4650 * 1/ 'Create' called by two separate instances of mdadm
4651 * 2/ 'Create' versus 'activate_spare': mdadm has chosen
4652 * devices that have since been assimilated via
4654 * In the event this update can not be carried out mdadm will
4655 * (FIX ME) notice that its update did not take hold.
4657 struct imsm_update_create_array
*u
= (void *) update
->buf
;
4658 struct intel_dev
*dv
;
4659 struct imsm_dev
*dev
;
4660 struct imsm_map
*map
, *new_map
;
4661 unsigned long long start
, end
;
4662 unsigned long long new_start
, new_end
;
4664 struct disk_info
*inf
;
4667 /* handle racing creates: first come first serve */
4668 if (u
->dev_idx
< mpb
->num_raid_devs
) {
4669 dprintf("%s: subarray %d already defined\n",
4670 __func__
, u
->dev_idx
);
4674 /* check update is next in sequence */
4675 if (u
->dev_idx
!= mpb
->num_raid_devs
) {
4676 dprintf("%s: can not create array %d expected index %d\n",
4677 __func__
, u
->dev_idx
, mpb
->num_raid_devs
);
4681 new_map
= get_imsm_map(&u
->dev
, 0);
4682 new_start
= __le32_to_cpu(new_map
->pba_of_lba0
);
4683 new_end
= new_start
+ __le32_to_cpu(new_map
->blocks_per_member
);
4684 inf
= get_disk_info(u
);
4686 /* handle activate_spare versus create race:
4687 * check to make sure that overlapping arrays do not include
4690 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4691 dev
= get_imsm_dev(super
, i
);
4692 map
= get_imsm_map(dev
, 0);
4693 start
= __le32_to_cpu(map
->pba_of_lba0
);
4694 end
= start
+ __le32_to_cpu(map
->blocks_per_member
);
4695 if ((new_start
>= start
&& new_start
<= end
) ||
4696 (start
>= new_start
&& start
<= new_end
))
4701 if (disks_overlap(super
, i
, u
)) {
4702 dprintf("%s: arrays overlap\n", __func__
);
4707 /* check that prepare update was successful */
4708 if (!update
->space
) {
4709 dprintf("%s: prepare update failed\n", __func__
);
4713 /* check that all disks are still active before committing
4714 * changes. FIXME: could we instead handle this by creating a
4715 * degraded array? That's probably not what the user expects,
4716 * so better to drop this update on the floor.
4718 for (i
= 0; i
< new_map
->num_members
; i
++) {
4719 dl
= serial_to_dl(inf
[i
].serial
, super
);
4721 dprintf("%s: disk disappeared\n", __func__
);
4726 super
->updates_pending
++;
4728 /* convert spares to members and fixup ord_tbl */
4729 for (i
= 0; i
< new_map
->num_members
; i
++) {
4730 dl
= serial_to_dl(inf
[i
].serial
, super
);
4731 if (dl
->index
== -1) {
4732 dl
->index
= mpb
->num_disks
;
4734 dl
->disk
.status
|= CONFIGURED_DISK
;
4735 dl
->disk
.status
&= ~SPARE_DISK
;
4737 set_imsm_ord_tbl_ent(new_map
, i
, dl
->index
);
4742 update
->space
= NULL
;
4743 imsm_copy_dev(dev
, &u
->dev
);
4744 dv
->index
= u
->dev_idx
;
4745 dv
->next
= super
->devlist
;
4746 super
->devlist
= dv
;
4747 mpb
->num_raid_devs
++;
4749 imsm_update_version_info(super
);
4752 /* mdmon knows how to release update->space, but not
4753 * ((struct intel_dev *) update->space)->dev
4755 if (update
->space
) {
4761 case update_add_disk
:
4763 /* we may be able to repair some arrays if disks are
4766 struct active_array
*a
;
4768 super
->updates_pending
++;
4769 for (a
= st
->arrays
; a
; a
= a
->next
)
4770 a
->check_degraded
= 1;
4772 /* add some spares to the metadata */
4773 while (super
->add
) {
4777 super
->add
= al
->next
;
4778 al
->next
= super
->disks
;
4780 dprintf("%s: added %x:%x\n",
4781 __func__
, al
->major
, al
->minor
);
4788 static void imsm_prepare_update(struct supertype
*st
,
4789 struct metadata_update
*update
)
4792 * Allocate space to hold new disk entries, raid-device entries or a new
4793 * mpb if necessary. The manager synchronously waits for updates to
4794 * complete in the monitor, so new mpb buffers allocated here can be
4795 * integrated by the monitor thread without worrying about live pointers
4796 * in the manager thread.
4798 enum imsm_update_type type
= *(enum imsm_update_type
*) update
->buf
;
4799 struct intel_super
*super
= st
->sb
;
4800 struct imsm_super
*mpb
= super
->anchor
;
4805 case update_create_array
: {
4806 struct imsm_update_create_array
*u
= (void *) update
->buf
;
4807 struct intel_dev
*dv
;
4808 struct imsm_dev
*dev
= &u
->dev
;
4809 struct imsm_map
*map
= get_imsm_map(dev
, 0);
4811 struct disk_info
*inf
;
4815 inf
= get_disk_info(u
);
4816 len
= sizeof_imsm_dev(dev
, 1);
4817 /* allocate a new super->devlist entry */
4818 dv
= malloc(sizeof(*dv
));
4820 dv
->dev
= malloc(len
);
4825 update
->space
= NULL
;
4829 /* count how many spares will be converted to members */
4830 for (i
= 0; i
< map
->num_members
; i
++) {
4831 dl
= serial_to_dl(inf
[i
].serial
, super
);
4833 /* hmm maybe it failed?, nothing we can do about
4838 if (count_memberships(dl
, super
) == 0)
4841 len
+= activate
* sizeof(struct imsm_disk
);
4848 /* check if we need a larger metadata buffer */
4849 if (super
->next_buf
)
4850 buf_len
= super
->next_len
;
4852 buf_len
= super
->len
;
4854 if (__le32_to_cpu(mpb
->mpb_size
) + len
> buf_len
) {
4855 /* ok we need a larger buf than what is currently allocated
4856 * if this allocation fails process_update will notice that
4857 * ->next_len is set and ->next_buf is NULL
4859 buf_len
= ROUND_UP(__le32_to_cpu(mpb
->mpb_size
) + len
, 512);
4860 if (super
->next_buf
)
4861 free(super
->next_buf
);
4863 super
->next_len
= buf_len
;
4864 if (posix_memalign(&super
->next_buf
, 512, buf_len
) == 0)
4865 memset(super
->next_buf
, 0, buf_len
);
4867 super
->next_buf
= NULL
;
4871 /* must be called while manager is quiesced */
4872 static void imsm_delete(struct intel_super
*super
, struct dl
**dlp
, int index
)
4874 struct imsm_super
*mpb
= super
->anchor
;
4876 struct imsm_dev
*dev
;
4877 struct imsm_map
*map
;
4878 int i
, j
, num_members
;
4881 dprintf("%s: deleting device[%d] from imsm_super\n",
4884 /* shift all indexes down one */
4885 for (iter
= super
->disks
; iter
; iter
= iter
->next
)
4886 if (iter
->index
> index
)
4888 for (iter
= super
->missing
; iter
; iter
= iter
->next
)
4889 if (iter
->index
> index
)
4892 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
4893 dev
= get_imsm_dev(super
, i
);
4894 map
= get_imsm_map(dev
, 0);
4895 num_members
= map
->num_members
;
4896 for (j
= 0; j
< num_members
; j
++) {
4897 /* update ord entries being careful not to propagate
4898 * ord-flags to the first map
4900 ord
= get_imsm_ord_tbl_ent(dev
, j
);
4902 if (ord_to_idx(ord
) <= index
)
4905 map
= get_imsm_map(dev
, 0);
4906 set_imsm_ord_tbl_ent(map
, j
, ord_to_idx(ord
- 1));
4907 map
= get_imsm_map(dev
, 1);
4909 set_imsm_ord_tbl_ent(map
, j
, ord
- 1);
4914 super
->updates_pending
++;
4916 struct dl
*dl
= *dlp
;
4918 *dlp
= (*dlp
)->next
;
4919 __free_imsm_disk(dl
);
4922 #endif /* MDASSEMBLE */
4924 struct superswitch super_imsm
= {
4926 .examine_super
= examine_super_imsm
,
4927 .brief_examine_super
= brief_examine_super_imsm
,
4928 .brief_examine_subarrays
= brief_examine_subarrays_imsm
,
4929 .export_examine_super
= export_examine_super_imsm
,
4930 .detail_super
= detail_super_imsm
,
4931 .brief_detail_super
= brief_detail_super_imsm
,
4932 .write_init_super
= write_init_super_imsm
,
4933 .validate_geometry
= validate_geometry_imsm
,
4934 .add_to_super
= add_to_super_imsm
,
4935 .detail_platform
= detail_platform_imsm
,
4937 .match_home
= match_home_imsm
,
4938 .uuid_from_super
= uuid_from_super_imsm
,
4939 .getinfo_super
= getinfo_super_imsm
,
4940 .update_super
= update_super_imsm
,
4942 .avail_size
= avail_size_imsm
,
4944 .compare_super
= compare_super_imsm
,
4946 .load_super
= load_super_imsm
,
4947 .init_super
= init_super_imsm
,
4948 .store_super
= store_super_imsm
,
4949 .free_super
= free_super_imsm
,
4950 .match_metadata_desc
= match_metadata_desc_imsm
,
4951 .container_content
= container_content_imsm
,
4952 .default_layout
= imsm_level_to_layout
,
4959 .open_new
= imsm_open_new
,
4960 .load_super
= load_super_imsm
,
4961 .set_array_state
= imsm_set_array_state
,
4962 .set_disk
= imsm_set_disk
,
4963 .sync_metadata
= imsm_sync_metadata
,
4964 .activate_spare
= imsm_activate_spare
,
4965 .process_update
= imsm_process_update
,
4966 .prepare_update
= imsm_prepare_update
,
4967 #endif /* MDASSEMBLE */