2 * mdadm - Intel(R) Matrix Storage Manager Support
4 * Copyright (C) 2002-2007 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.
25 /* MPB == Metadata Parameter Block */
26 #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
27 #define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
28 #define MPB_VERSION_RAID0 "1.0.00"
29 #define MPB_VERSION_RAID1 "1.1.00"
30 #define MPB_VERSION_RAID5 "1.2.02"
31 #define MAX_SIGNATURE_LENGTH 32
32 #define MAX_RAID_SERIAL_LEN 16
34 /* Disk configuration info. */
35 #define IMSM_MAX_DEVICES 255
37 __u8 serial
[MAX_RAID_SERIAL_LEN
];/* 0xD8 - 0xE7 ascii serial number */
38 __u32 total_blocks
; /* 0xE8 - 0xEB total blocks */
39 __u32 scsi_id
; /* 0xEC - 0xEF scsi ID */
40 __u32 status
; /* 0xF0 - 0xF3 */
41 #define SPARE_DISK 0x01 /* Spare */
42 #define CONFIGURED_DISK 0x02 /* Member of some RaidDev */
43 #define FAILED_DISK 0x04 /* Permanent failure */
44 #define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */
46 #define IMSM_DISK_FILLERS 5
47 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */
50 /* RAID map configuration infos. */
52 __u32 pba_of_lba0
; /* start address of partition */
53 __u32 blocks_per_member
;/* blocks per member */
54 __u32 num_data_stripes
; /* number of data stripes */
55 __u16 blocks_per_strip
;
56 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
57 #define IMSM_T_STATE_NORMAL 0
58 #define IMSM_T_STATE_UNINITIALIZED 1
59 #define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */
60 #define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */
62 #define IMSM_T_RAID0 0
63 #define IMSM_T_RAID1 1
64 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
65 __u8 num_members
; /* number of member disks */
67 __u32 filler
[7]; /* expansion area */
68 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
70 } __attribute__ ((packed
));
74 __u8 migr_state
; /* Normal or Migrating */
75 __u8 migr_type
; /* Initializing, Rebuilding, ... */
79 struct imsm_map map
[1];
80 /* here comes another one if migr_state */
81 } __attribute__ ((packed
));
84 __u8 volume
[MAX_RAID_SERIAL_LEN
];
87 __u32 status
; /* Persistent RaidDev status */
88 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
89 #define IMSM_DEV_FILLERS 12
90 __u32 filler
[IMSM_DEV_FILLERS
];
92 } __attribute__ ((packed
));
95 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
96 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
97 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
98 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
99 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
100 __u32 reserved
[2]; /* 0x30 - 0x37 */
101 __u8 num_disks
; /* 0x38 Number of configured disks */
102 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
103 __u8 fill
[2]; /* 0x3A - 0x3B */
104 #define IMSM_FILLERS 39
105 __u32 filler
[IMSM_FILLERS
]; /* 0x3C - 0xD7 RAID_MPB_FILLERS */
106 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
107 /* here comes imsm_dev[num_raid_devs] */
108 } __attribute__ ((packed
));
111 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
114 static unsigned long long mpb_sectors(struct imsm_super
*mpb
)
116 __u32 size
= __le32_to_cpu(mpb
->mpb_size
);
118 return ((size
+ (512-1)) & (~(512-1))) / 512;
121 /* internal representation of IMSM metadata */
124 struct imsm_super
*mpb
;
130 __u8 serial
[MAX_RAID_SERIAL_LEN
];
137 static struct supertype
*match_metadata_desc_imsm(char *arg
)
139 struct supertype
*st
;
141 if (strcmp(arg
, "imsm") != 0 &&
142 strcmp(arg
, "default") != 0
146 st
= malloc(sizeof(*st
));
147 st
->ss
= &super_imsm
;
148 st
->max_devs
= IMSM_MAX_DEVICES
;
149 st
->minor_version
= 0;
154 static struct supertype
*match_metadata_desc_imsm_raid(char *arg
)
156 struct supertype
*st
;
158 if (strcmp(arg
, "imsm/raid") != 0 &&
159 strcmp(arg
, "raid") != 0 &&
160 strcmp(arg
, "default") != 0
164 st
= malloc(sizeof(*st
));
165 st
->ss
= &super_imsm_raid
;
166 st
->max_devs
= IMSM_MAX_DEVICES
;
167 st
->minor_version
= 0;
172 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
174 return &mpb
->sig
[MPB_SIG_LEN
];
177 static struct imsm_disk
*get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
179 if (index
> mpb
->num_disks
- 1)
181 return &mpb
->disk
[index
];
184 static __u32
gen_imsm_checksum(struct imsm_super
*mpb
)
186 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
187 __u32
*p
= (__u32
*) mpb
;
191 sum
+= __le32_to_cpu(*p
++);
193 return sum
- __le32_to_cpu(mpb
->check_sum
);
196 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
)
198 size_t size
= sizeof(*dev
);
200 /* each map has disk_ord_tbl[num_members - 1] additional space */
201 size
+= sizeof(__u32
) * (dev
->vol
.map
[0].num_members
- 1);
203 /* migrating means an additional map */
204 if (dev
->vol
.migr_state
) {
205 size
+= sizeof(struct imsm_map
);
206 size
+= sizeof(__u32
) * (dev
->vol
.map
[1].num_members
- 1);
212 static struct imsm_dev
*get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
218 if (index
> mpb
->num_raid_devs
- 1)
221 /* devices start after all disks */
222 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
224 for (i
= 0; i
<= index
; i
++)
226 return _mpb
+ offset
;
228 offset
+= sizeof_imsm_dev(_mpb
+ offset
);
233 static __u32
get_imsm_disk_idx(struct imsm_map
*map
, int slot
)
235 __u32
*ord_tbl
= &map
->disk_ord_tbl
[slot
];
237 /* top byte is 'special' */
238 return __le32_to_cpu(*ord_tbl
& ~(0xff << 24));
241 static int get_imsm_raid_level(struct imsm_map
*map
)
243 if (map
->raid_level
== 1) {
244 if (map
->num_members
== 2)
250 return map
->raid_level
;
254 static void print_imsm_dev(struct imsm_dev
*dev
, int index
)
258 struct imsm_map
*map
= dev
->vol
.map
;
261 printf("[%s]:\n", dev
->volume
);
262 printf(" RAID Level : %d\n", get_imsm_raid_level(map
));
263 printf(" Members : %d\n", map
->num_members
);
264 for (slot
= 0; slot
< map
->num_members
; slot
++)
265 if (index
== get_imsm_disk_idx(map
, slot
))
267 if (slot
< map
->num_members
)
268 printf(" This Slot : %d\n", slot
);
270 printf(" This Slot : ?\n");
271 sz
= __le32_to_cpu(dev
->size_high
);
273 sz
+= __le32_to_cpu(dev
->size_low
);
274 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
275 human_size(sz
* 512));
276 sz
= __le32_to_cpu(map
->blocks_per_member
);
277 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
278 human_size(sz
* 512));
279 printf(" Sector Offset : %u\n",
280 __le32_to_cpu(map
->pba_of_lba0
));
281 printf(" Num Stripes : %u\n",
282 __le32_to_cpu(map
->num_data_stripes
));
283 printf(" Chunk Size : %u KiB\n",
284 __le16_to_cpu(map
->blocks_per_strip
) / 2);
285 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
286 printf(" Migrate State : %s\n", dev
->vol
.migr_state
? "migrating" : "idle");
287 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
288 printf(" Map State : %s\n", map_state_str
[map
->map_state
]);
291 static void print_imsm_disk(struct imsm_super
*mpb
, int index
)
293 struct imsm_disk
*disk
= get_imsm_disk(mpb
, index
);
294 char str
[MAX_RAID_SERIAL_LEN
];
299 snprintf(str
, MAX_RAID_SERIAL_LEN
, "%s", disk
->serial
);
300 printf(" Disk%02d Serial : %s\n", index
, str
);
301 s
= __le32_to_cpu(disk
->status
);
302 printf(" State :%s%s%s%s\n", s
&SPARE_DISK
? " spare" : "",
303 s
&CONFIGURED_DISK
? " active" : "",
304 s
&FAILED_DISK
? " failed" : "",
305 s
&USABLE_DISK
? " usable" : "");
306 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
307 sz
= __le32_to_cpu(disk
->total_blocks
) - mpb_sectors(mpb
);
308 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
309 human_size(sz
* 512));
312 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
314 struct intel_super
*super
= st
->sb
;
315 struct imsm_super
*mpb
= super
->mpb
;
316 char str
[MAX_SIGNATURE_LENGTH
];
320 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
321 printf(" Magic : %s\n", str
);
322 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
323 printf(" Version : %s\n", get_imsm_version(mpb
));
324 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
325 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
326 sum
= __le32_to_cpu(mpb
->check_sum
);
327 printf(" Checksum : %08x %s\n", sum
,
328 gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
329 printf(" Disks : %d\n", mpb
->num_disks
);
330 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
331 print_imsm_disk(mpb
, super
->disks
->index
);
332 for (i
= 0; i
< mpb
->num_raid_devs
; i
++)
333 print_imsm_dev(get_imsm_dev(mpb
, i
), super
->disks
->index
);
334 for (i
= 0; i
< mpb
->num_disks
; i
++) {
335 if (i
== super
->disks
->index
)
337 print_imsm_disk(mpb
, i
);
341 static void brief_examine_super_imsm(struct supertype
*st
)
343 struct intel_super
*super
= st
->sb
;
344 struct imsm_super
*mpb
= super
->mpb
;
346 printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n",
347 __le32_to_cpu(mpb
->family_num
));
350 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
352 printf("%s\n", __FUNCTION__
);
355 static void brief_detail_super_imsm(struct supertype
*st
)
357 printf("%s\n", __FUNCTION__
);
361 static int match_home_imsm(struct supertype
*st
, char *homehost
)
363 printf("%s\n", __FUNCTION__
);
368 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
370 printf("%s\n", __FUNCTION__
);
374 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
376 __u8
*v
= get_imsm_version(mpb
);
377 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
378 char major
[] = { 0, 0, 0 };
379 char minor
[] = { 0 ,0, 0 };
380 char patch
[] = { 0, 0, 0 };
381 char *ver_parse
[] = { major
, minor
, patch
};
385 while (*v
!= '\0' && v
< end
) {
386 if (*v
!= '.' && j
< 2)
387 ver_parse
[i
][j
++] = *v
;
395 *m
= strtol(minor
, NULL
, 0);
396 *p
= strtol(patch
, NULL
, 0);
399 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
)
401 struct intel_super
*super
= st
->sb
;
402 struct imsm_super
*mpb
= super
->mpb
;
403 struct imsm_disk
*disk
;
407 info
->array
.major_version
= 2000;
408 get_imsm_numerical_version(mpb
, &info
->array
.minor_version
,
409 &info
->array
.patch_version
);
410 info
->array
.raid_disks
= mpb
->num_disks
;
411 info
->array
.level
= LEVEL_CONTAINER
;
412 info
->array
.layout
= 0;
413 info
->array
.md_minor
= -1;
414 info
->array
.ctime
= __le32_to_cpu(mpb
->generation_num
); //??
415 info
->array
.utime
= 0;
416 info
->array
.chunk_size
= 0;
418 info
->disk
.major
= 0;
419 info
->disk
.minor
= 0;
420 info
->disk
.number
= super
->disks
->index
;
421 info
->disk
.raid_disk
= -1;
422 /* is this disk a member of a raid device? */
423 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
424 struct imsm_dev
*dev
= get_imsm_dev(mpb
, i
);
425 struct imsm_map
*map
= dev
->vol
.map
;
427 for (j
= 0; j
< map
->num_members
; j
++) {
428 __u32 index
= get_imsm_disk_idx(map
, j
);
430 if (index
== super
->disks
->index
) {
431 info
->disk
.raid_disk
= super
->disks
->index
;
435 if (info
->disk
.raid_disk
!= -1)
438 disk
= get_imsm_disk(mpb
, super
->disks
->index
);
439 s
= __le32_to_cpu(disk
->status
);
440 info
->disk
.state
= s
& CONFIGURED_DISK
? (1 << MD_DISK_ACTIVE
) : 0;
441 info
->disk
.state
|= s
& FAILED_DISK
? (1 << MD_DISK_FAULTY
) : 0;
442 info
->disk
.state
|= s
& USABLE_DISK
? (1 << MD_DISK_SYNC
) : 0;
443 info
->reshape_active
= 0;
446 static void getinfo_super_imsm_raid(struct supertype
*st
, struct mdinfo
*info
)
448 printf("%s\n", __FUNCTION__
);
451 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
452 char *update
, char *devname
, int verbose
,
453 int uuid_set
, char *homehost
)
457 /* For 'assemble' and 'force' we need to return non-zero if any
458 * change was made. For others, the return value is ignored.
459 * Update options are:
460 * force-one : This device looks a bit old but needs to be included,
461 * update age info appropriately.
462 * assemble: clear any 'faulty' flag to allow this device to
464 * force-array: Array is degraded but being forced, mark it clean
465 * if that will be needed to assemble it.
467 * newdev: not used ????
468 * grow: Array has gained a new device - this is currently for
470 * resync: mark as dirty so a resync will happen.
471 * name: update the name - preserving the homehost
473 * Following are not relevant for this imsm:
474 * sparc2.2 : update from old dodgey metadata
475 * super-minor: change the preferred_minor number
476 * summaries: update redundant counters.
477 * uuid: Change the uuid of the array to match watch is given
478 * homehost: update the recorded homehost
479 * _reshape_progress: record new reshape_progress position.
482 //struct intel_super *super = st->sb;
483 //struct imsm_super *mpb = super->mpb;
485 if (strcmp(update
, "grow") == 0) {
487 if (strcmp(update
, "resync") == 0) {
488 /* dev->vol.dirty = 1; */
491 /* IMSM has no concept of UUID or homehost */
496 static __u64
avail_size_imsm(struct supertype
*st
, __u64 size
)
498 printf("%s\n", __FUNCTION__
);
503 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
507 * 0 same, or first was empty, and second was copied
508 * 1 second had wrong number
512 struct intel_super
*first
= st
->sb
;
513 struct intel_super
*sec
= tst
->sb
;
521 if (memcmp(first
->mpb
->sig
, sec
->mpb
->sig
, MAX_SIGNATURE_LENGTH
) != 0)
523 if (first
->mpb
->family_num
!= sec
->mpb
->family_num
)
525 if (first
->mpb
->mpb_size
!= sec
->mpb
->mpb_size
)
527 if (first
->mpb
->check_sum
!= sec
->mpb
->check_sum
)
533 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
535 static int imsm_read_serial(int fd
, char *devname
,
536 __u8 serial
[MAX_RAID_SERIAL_LEN
])
538 unsigned char scsi_serial
[255];
547 memset(scsi_serial
, 0, sizeof(scsi_serial
));
549 minor
= minor(stb
.st_rdev
);
552 sprintf(sg_path
, "/dev/sg%d", minor
);
553 sg_fd
= open(sg_path
, O_RDONLY
);
557 Name
": Failed to open %s for %s: %s\n",
558 sg_path
, devname
, strerror(errno
));
562 rv
= scsi_get_serial(sg_fd
, scsi_serial
, sizeof(scsi_serial
));
568 Name
": Failed to retrieve serial for %s\n",
573 rsp_len
= scsi_serial
[3];
574 for (i
= 0, cnt
= 0; i
< rsp_len
; i
++) {
575 if (!isspace(scsi_serial
[4 + i
]))
576 serial
[cnt
++] = scsi_serial
[4 + i
];
577 if (cnt
== MAX_RAID_SERIAL_LEN
)
581 serial
[MAX_RAID_SERIAL_LEN
- 1] = '\0';
587 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
589 struct imsm_super
*mpb
= super
->mpb
;
592 struct imsm_disk
*disk
;
596 dl
= malloc(sizeof(*dl
));
600 Name
": failed to allocate disk buffer for %s\n",
604 memset(dl
, 0, sizeof(*dl
));
607 dl
->major
= major(stb
.st_rdev
);
608 dl
->minor
= minor(stb
.st_rdev
);
609 dl
->next
= super
->disks
;
610 dl
->fd
= keep_fd
? fd
: -1;
611 dl
->devname
= devname
? strdup(devname
) : NULL
;
614 rv
= imsm_read_serial(fd
, devname
, dl
->serial
);
619 /* look up this disk's index */
620 for (i
= 0; i
< mpb
->num_disks
; i
++) {
621 disk
= get_imsm_disk(mpb
, i
);
623 if (memcmp(disk
->serial
, dl
->serial
, MAX_RAID_SERIAL_LEN
) == 0)
627 if (i
> mpb
->num_disks
)
635 /* load_imsm_mpb - read matrix metadata
636 * allocates super->mpb to be freed by free_super
638 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
640 unsigned long long dsize
;
641 size_t len
, mpb_size
;
642 unsigned long long sectors
;
644 struct imsm_super anchor
;
647 memset(super
, 0, sizeof(*super
));
648 get_dev_size(fd
, NULL
, &dsize
);
650 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
653 Name
": Cannot seek to anchor block on %s: %s\n",
654 devname
, strerror(errno
));
658 len
= sizeof(anchor
);
659 if (read(fd
, &anchor
, len
) != len
) {
662 Name
": Cannot read anchor block on %s: %s\n",
663 devname
, strerror(errno
));
667 if (strncmp((char *) anchor
.sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
670 Name
": no IMSM anchor on %s\n", devname
);
674 mpb_size
= __le32_to_cpu(anchor
.mpb_size
);
675 super
->mpb
= malloc(mpb_size
< 512 ? 512 : mpb_size
);
679 Name
": unable to allocate %zu byte mpb buffer\n",
683 memcpy(super
->buf
, &anchor
, sizeof(anchor
));
685 /* read the rest of the first block */
686 len
= 512 - sizeof(anchor
);
687 if (read(fd
, super
->buf
+ sizeof(anchor
), len
) != len
) {
690 Name
": Cannot read anchor remainder on %s: %s\n",
691 devname
, strerror(errno
));
695 sectors
= mpb_sectors(&anchor
) - 1;
697 return load_imsm_disk(fd
, super
, devname
, 0);
699 /* read the extended mpb */
700 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
703 Name
": Cannot seek to extended mpb on %s: %s\n",
704 devname
, strerror(errno
));
708 len
= mpb_size
- 512;
709 if (read(fd
, super
->buf
+ 512, len
) != len
) {
712 Name
": Cannot read extended mpb on %s: %s\n",
713 devname
, strerror(errno
));
717 check_sum
= gen_imsm_checksum(super
->mpb
);
718 if (check_sum
!= __le32_to_cpu(super
->mpb
->check_sum
)) {
721 Name
": IMSM checksum %x != %x on %s\n",
722 check_sum
, __le32_to_cpu(super
->mpb
->check_sum
),
727 return load_imsm_disk(fd
, super
, devname
, 0);
730 struct superswitch super_imsm_container
;
732 static void free_imsm_disks(struct intel_super
*super
)
734 while (super
->disks
) {
735 struct dl
*d
= super
->disks
;
737 super
->disks
= d
->next
;
746 static void free_imsm(struct intel_super
*super
)
750 free_imsm_disks(super
);
755 static void free_super_imsm(struct supertype
*st
)
757 struct intel_super
*super
= st
->sb
;
767 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
768 char *devname
, int keep_fd
)
771 struct intel_super
*super
;
772 struct mdinfo
*sd
, *best
= NULL
;
779 /* check if this disk is a member of an active array */
780 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
784 if (sra
->array
.major_version
!= -1 ||
785 sra
->array
.minor_version
!= -2 ||
786 strcmp(sra
->text_version
, "imsm") != 0)
789 super
= malloc(sizeof(*super
));
793 /* find the most up to date disk in this array */
794 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
795 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
796 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
801 rv
= load_imsm_mpb(dfd
, super
, NULL
);
805 gen
= __le32_to_cpu(super
->mpb
->generation_num
);
806 if (!best
|| gen
> bestgen
) {
821 /* load the most up to date anchor */
822 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
823 dfd
= dev_open(nm
, O_RDONLY
);
828 rv
= load_imsm_mpb(dfd
, super
, NULL
);
835 /* reset the disk list */
836 free_imsm_disks(super
);
838 /* populate disk list */
839 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
840 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
841 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
846 load_imsm_disk(dfd
, super
, NULL
, keep_fd
);
852 if (st
->ss
== NULL
) {
853 st
->ss
= &super_imsm_container
;
854 st
->minor_version
= 0;
855 st
->max_devs
= IMSM_MAX_DEVICES
;
862 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
864 struct intel_super
*super
;
868 if (load_super_imsm_all(st
, fd
, &st
->sb
, devname
, 0) == 0)
872 super
= malloc(sizeof(*super
));
875 Name
": malloc of %zu failed.\n",
880 rv
= load_imsm_mpb(fd
, super
, devname
);
885 Name
": Failed to load all information "
886 "sections on %s\n", devname
);
892 if (st
->ss
== NULL
) {
893 st
->ss
= &super_imsm
;
894 st
->minor_version
= 0;
895 st
->max_devs
= IMSM_MAX_DEVICES
;
901 static int init_zero_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
902 unsigned long long size
, char *name
,
903 char *homehost
, int *uuid
)
905 printf("%s\n", __FUNCTION__
);
910 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
911 unsigned long long size
, char *name
,
912 char *homehost
, int *uuid
)
914 printf("%s\n", __FUNCTION__
);
919 static int init_super_imsm_raid(struct supertype
*st
, mdu_array_info_t
*info
,
920 unsigned long long size
, char *name
,
921 char *homehost
, int *uuid
)
923 printf("%s\n", __FUNCTION__
);
928 static void add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dinfo
,
929 int fd
, char *devname
)
931 printf("%s\n", __FUNCTION__
);
934 static void add_to_super_imsm_raid(struct supertype
*st
, mdu_disk_info_t
*dinfo
,
935 int fd
, char *devname
)
937 printf("%s\n", __FUNCTION__
);
940 static int write_init_super_imsm(struct supertype
*st
)
942 printf("%s\n", __FUNCTION__
);
947 static int store_zero_imsm(struct supertype
*st
, int fd
)
949 printf("%s\n", __FUNCTION__
);
954 static void getinfo_super_n_imsm_container(struct supertype
*st
, struct mdinfo
*info
)
956 /* just need offset and size...
959 struct intel_super
*super
= st
->sb
;
960 struct imsm_super
*mpb
= super
->mpb
;
961 struct imsm_disk
*disk
= get_imsm_disk(mpb
, info
->disk
.number
);
962 int sect
= mpb_sectors(mpb
);
964 info
->data_offset
= __le32_to_cpu(disk
->total_blocks
) - (2 + sect
- 1);
965 info
->component_size
= sect
;
968 static void getinfo_super_n_raid(struct supertype
*st
, struct mdinfo
*info
)
970 printf("%s\n", __FUNCTION__
);
973 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
974 int raiddisks
, int chunk
, unsigned long long size
,
975 char *subdev
, unsigned long long *freesize
)
977 printf("%s\n", __FUNCTION__
);
982 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
983 int layout
, int raiddisks
, int chunk
,
984 unsigned long long size
, char *subdev
,
985 unsigned long long *freesize
)
987 printf("%s\n", __FUNCTION__
);
992 static int validate_geometry_imsm_raid(struct supertype
*st
, int level
,
993 int layout
, int raiddisks
, int chunk
,
994 unsigned long long size
, char *subdev
,
995 unsigned long long *freesize
)
997 printf("%s\n", __FUNCTION__
);
1002 static struct mdinfo
*container_content_imsm(struct supertype
*st
)
1004 /* Given a container loaded by load_super_imsm_all,
1005 * extract information about all the arrays into
1008 * For each imsm_dev create an mdinfo, fill it in,
1009 * then look for matching devices in super->disks
1010 * and create appropriate device mdinfo.
1012 struct intel_super
*super
= st
->sb
;
1013 struct imsm_super
*mpb
= super
->mpb
;
1014 struct mdinfo
*rest
= NULL
;
1017 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1018 struct imsm_dev
*dev
= get_imsm_dev(mpb
, i
);
1019 struct imsm_vol
*vol
= &dev
->vol
;
1020 struct imsm_map
*map
= vol
->map
;
1021 struct mdinfo
*this;
1025 this = malloc(sizeof(*this));
1026 memset(this, 0, sizeof(*this));
1030 this->array
.major_version
= 2000;
1031 get_imsm_numerical_version(mpb
, &this->array
.minor_version
,
1032 &this->array
.patch_version
);
1033 this->array
.level
= get_imsm_raid_level(map
);
1034 this->array
.raid_disks
= map
->num_members
;
1035 switch(this->array
.level
) {
1038 this->array
.layout
= 0;
1042 this->array
.layout
= ALGORITHM_LEFT_SYMMETRIC
;
1045 this->array
.layout
= 0x102; //FIXME is this correct?
1048 this->array
.layout
= -1; // FIXME
1050 this->array
.md_minor
= -1;
1051 this->array
.ctime
= 0;
1052 this->array
.utime
= 0;
1053 this->array
.chunk_size
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
1054 this->array
.state
= !vol
->dirty
;
1055 this->container_member
= i
;
1056 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
|| dev
->vol
.dirty
)
1057 this->resync_start
= 0;
1059 this->resync_start
= ~0ULL;
1061 strncpy(this->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
1062 this->name
[MAX_RAID_SERIAL_LEN
] = 0;
1064 memset(this->uuid
, 0, sizeof(this->uuid
));
1066 sz
= __le32_to_cpu(dev
->size_high
);
1068 sz
+= __le32_to_cpu(dev
->size_low
);
1069 this->component_size
= sz
;
1070 this->array
.size
= this->component_size
/ 2;
1072 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
1073 struct imsm_disk
*disk
;
1074 struct mdinfo
*info_d
;
1079 idx
= __le32_to_cpu(map
->disk_ord_tbl
[slot
] & ~(0xff << 24));
1080 for (d
= super
->disks
; d
; d
= d
->next
)
1081 if (d
->index
== idx
)
1085 break; /* shouldn't this be continue ?? */
1087 info_d
= malloc(sizeof(*info_d
));
1089 break; /* ditto ?? */
1090 memset(info_d
, 0, sizeof(*info_d
));
1091 info_d
->next
= this->devs
;
1092 this->devs
= info_d
;
1094 disk
= get_imsm_disk(mpb
, idx
);
1095 s
= __le32_to_cpu(disk
->status
);
1097 info_d
->disk
.number
= d
->index
;
1098 info_d
->disk
.major
= d
->major
;
1099 info_d
->disk
.minor
= d
->minor
;
1100 info_d
->disk
.raid_disk
= slot
;
1101 info_d
->disk
.state
= s
& CONFIGURED_DISK
? (1 << MD_DISK_ACTIVE
) : 0;
1102 info_d
->disk
.state
|= s
& FAILED_DISK
? (1 << MD_DISK_FAULTY
) : 0;
1103 info_d
->disk
.state
|= s
& USABLE_DISK
? (1 << MD_DISK_SYNC
) : 0;
1105 this->array
.working_disks
++;
1107 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
1108 info_d
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
1109 info_d
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
1111 strcpy(info_d
->name
, d
->devname
);
1118 struct superswitch super_imsm
= {
1120 .examine_super
= examine_super_imsm
,
1121 .brief_examine_super
= brief_examine_super_imsm
,
1122 .detail_super
= detail_super_imsm
,
1123 .brief_detail_super
= brief_detail_super_imsm
,
1125 .match_home
= match_home_imsm
,
1126 .uuid_from_super
= uuid_from_super_imsm
,
1127 .getinfo_super
= getinfo_super_imsm
,
1128 .update_super
= update_super_imsm
,
1130 .avail_size
= avail_size_imsm
,
1132 .compare_super
= compare_super_imsm
,
1134 .load_super
= load_super_imsm
,
1135 .init_super
= init_zero_imsm
,
1136 .store_super
= store_zero_imsm
,
1137 .free_super
= free_super_imsm
,
1138 .match_metadata_desc
= match_metadata_desc_imsm
,
1139 .getinfo_super_n
= getinfo_super_n_imsm_container
,
1141 .validate_geometry
= validate_geometry_imsm
,
1145 .text_version
= "imsm",
1148 /* super_imsm_container is set by validate_geometry_imsm when given a
1149 * device that is not part of any array
1151 struct superswitch super_imsm_container
= {
1153 .validate_geometry
= validate_geometry_imsm_container
,
1154 .init_super
= init_super_imsm
,
1155 .add_to_super
= add_to_super_imsm
,
1156 .write_init_super
= write_init_super_imsm
,
1157 .getinfo_super
= getinfo_super_imsm
,
1158 .getinfo_super_n
= getinfo_super_n_imsm_container
,
1159 .load_super
= load_super_imsm
,
1162 .examine_super
= examine_super_imsm
,
1163 .brief_examine_super
= brief_examine_super_imsm
,
1164 .detail_super
= detail_super_imsm
,
1165 .brief_detail_super
= brief_detail_super_imsm
,
1168 .free_super
= free_super_imsm
,
1170 .container_content
= container_content_imsm
,
1175 .text_version
= "imsm",
1178 struct superswitch super_imsm_raid
= {
1179 .update_super
= update_super_imsm
,
1180 .init_super
= init_super_imsm_raid
,
1181 .add_to_super
= add_to_super_imsm_raid
,
1182 .getinfo_super
= getinfo_super_imsm_raid
,
1183 .getinfo_super_n
= getinfo_super_n_raid
,
1184 .write_init_super
= write_init_super_imsm
,
1186 .load_super
= load_super_imsm
,
1187 .free_super
= free_super_imsm
,
1188 .match_metadata_desc
= match_metadata_desc_imsm_raid
,
1191 .validate_geometry
= validate_geometry_imsm_raid
,
1195 .text_version
= "imsm",