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.
26 /* MPB == Metadata Parameter Block */
27 #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
28 #define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
29 #define MPB_VERSION_RAID0 "1.0.00"
30 #define MPB_VERSION_RAID1 "1.1.00"
31 #define MPB_VERSION_RAID5 "1.2.02"
32 #define MAX_SIGNATURE_LENGTH 32
33 #define MAX_RAID_SERIAL_LEN 16
35 /* Disk configuration info. */
36 #define IMSM_MAX_DEVICES 255
38 __u8 serial
[MAX_RAID_SERIAL_LEN
];/* 0xD8 - 0xE7 ascii serial number */
39 __u32 total_blocks
; /* 0xE8 - 0xEB total blocks */
40 __u32 scsi_id
; /* 0xEC - 0xEF scsi ID */
41 __u32 status
; /* 0xF0 - 0xF3 */
42 #define SPARE_DISK 0x01 /* Spare */
43 #define CONFIGURED_DISK 0x02 /* Member of some RaidDev */
44 #define FAILED_DISK 0x04 /* Permanent failure */
45 #define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */
47 #define IMSM_DISK_FILLERS 5
48 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */
51 /* RAID map configuration infos. */
53 __u32 pba_of_lba0
; /* start address of partition */
54 __u32 blocks_per_member
;/* blocks per member */
55 __u32 num_data_stripes
; /* number of data stripes */
56 __u16 blocks_per_strip
;
57 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
58 #define IMSM_T_STATE_NORMAL 0
59 #define IMSM_T_STATE_UNINITIALIZED 1
60 #define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */
61 #define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */
63 #define IMSM_T_RAID0 0
64 #define IMSM_T_RAID1 1
65 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
66 __u8 num_members
; /* number of member disks */
68 __u32 filler
[7]; /* expansion area */
69 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
71 } __attribute__ ((packed
));
75 __u8 migr_state
; /* Normal or Migrating */
76 __u8 migr_type
; /* Initializing, Rebuilding, ... */
80 struct imsm_map map
[1];
81 /* here comes another one if migr_state */
82 } __attribute__ ((packed
));
85 __u8 volume
[MAX_RAID_SERIAL_LEN
];
88 __u32 status
; /* Persistent RaidDev status */
89 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
90 #define IMSM_DEV_FILLERS 12
91 __u32 filler
[IMSM_DEV_FILLERS
];
93 } __attribute__ ((packed
));
96 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
97 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
98 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
99 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
100 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
101 __u32 reserved
[2]; /* 0x30 - 0x37 */
102 __u8 num_disks
; /* 0x38 Number of configured disks */
103 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
104 __u8 fill
[2]; /* 0x3A - 0x3B */
105 #define IMSM_FILLERS 39
106 __u32 filler
[IMSM_FILLERS
]; /* 0x3C - 0xD7 RAID_MPB_FILLERS */
107 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
108 /* here comes imsm_dev[num_raid_devs] */
109 } __attribute__ ((packed
));
112 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
115 static unsigned int sector_count(__u32 bytes
)
117 return ((bytes
+ (512-1)) & (~(512-1))) / 512;
120 static unsigned int mpb_sectors(struct imsm_super
*mpb
)
122 return sector_count(__le32_to_cpu(mpb
->mpb_size
));
125 /* internal representation of IMSM metadata */
128 struct imsm_super
*mpb
;
135 __u8 serial
[MAX_RAID_SERIAL_LEN
];
142 static struct supertype
*match_metadata_desc_imsm(char *arg
)
144 struct supertype
*st
;
146 if (strcmp(arg
, "imsm") != 0 &&
147 strcmp(arg
, "default") != 0
151 st
= malloc(sizeof(*st
));
152 st
->ss
= &super_imsm
;
153 st
->max_devs
= IMSM_MAX_DEVICES
;
154 st
->minor_version
= 0;
159 static struct supertype
*match_metadata_desc_imsm_raid(char *arg
)
161 struct supertype
*st
;
163 if (strcmp(arg
, "imsm/raid") != 0 &&
164 strcmp(arg
, "raid") != 0 &&
165 strcmp(arg
, "default") != 0
169 st
= malloc(sizeof(*st
));
170 st
->ss
= &super_imsm_raid
;
171 st
->max_devs
= IMSM_MAX_DEVICES
;
172 st
->minor_version
= 0;
177 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
179 return &mpb
->sig
[MPB_SIG_LEN
];
182 static struct imsm_disk
*get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
184 if (index
> mpb
->num_disks
- 1)
186 return &mpb
->disk
[index
];
189 static __u32
gen_imsm_checksum(struct imsm_super
*mpb
)
191 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
192 __u32
*p
= (__u32
*) mpb
;
196 sum
+= __le32_to_cpu(*p
++);
198 return sum
- __le32_to_cpu(mpb
->check_sum
);
201 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
)
203 size_t size
= sizeof(*dev
);
205 /* each map has disk_ord_tbl[num_members - 1] additional space */
206 size
+= sizeof(__u32
) * (dev
->vol
.map
[0].num_members
- 1);
208 /* migrating means an additional map */
209 if (dev
->vol
.migr_state
) {
210 size
+= sizeof(struct imsm_map
);
211 size
+= sizeof(__u32
) * (dev
->vol
.map
[1].num_members
- 1);
217 static struct imsm_dev
*get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
223 if (index
> mpb
->num_raid_devs
- 1)
226 /* devices start after all disks */
227 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
229 for (i
= 0; i
<= index
; i
++)
231 return _mpb
+ offset
;
233 offset
+= sizeof_imsm_dev(_mpb
+ offset
);
238 static __u32
get_imsm_disk_idx(struct imsm_map
*map
, int slot
)
240 __u32
*ord_tbl
= &map
->disk_ord_tbl
[slot
];
242 /* top byte is 'special' */
243 return __le32_to_cpu(*ord_tbl
& ~(0xff << 24));
246 static int get_imsm_raid_level(struct imsm_map
*map
)
248 if (map
->raid_level
== 1) {
249 if (map
->num_members
== 2)
255 return map
->raid_level
;
259 static void print_imsm_dev(struct imsm_dev
*dev
, int index
)
263 struct imsm_map
*map
= dev
->vol
.map
;
266 printf("[%s]:\n", dev
->volume
);
267 printf(" RAID Level : %d\n", get_imsm_raid_level(map
));
268 printf(" Members : %d\n", map
->num_members
);
269 for (slot
= 0; slot
< map
->num_members
; slot
++)
270 if (index
== get_imsm_disk_idx(map
, slot
))
272 if (slot
< map
->num_members
)
273 printf(" This Slot : %d\n", slot
);
275 printf(" This Slot : ?\n");
276 sz
= __le32_to_cpu(dev
->size_high
);
278 sz
+= __le32_to_cpu(dev
->size_low
);
279 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
280 human_size(sz
* 512));
281 sz
= __le32_to_cpu(map
->blocks_per_member
);
282 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
283 human_size(sz
* 512));
284 printf(" Sector Offset : %u\n",
285 __le32_to_cpu(map
->pba_of_lba0
));
286 printf(" Num Stripes : %u\n",
287 __le32_to_cpu(map
->num_data_stripes
));
288 printf(" Chunk Size : %u KiB\n",
289 __le16_to_cpu(map
->blocks_per_strip
) / 2);
290 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
291 printf(" Migrate State : %s\n", dev
->vol
.migr_state
? "migrating" : "idle");
292 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
293 printf(" Map State : %s\n", map_state_str
[map
->map_state
]);
296 static void print_imsm_disk(struct imsm_super
*mpb
, int index
)
298 struct imsm_disk
*disk
= get_imsm_disk(mpb
, index
);
299 char str
[MAX_RAID_SERIAL_LEN
];
304 snprintf(str
, MAX_RAID_SERIAL_LEN
, "%s", disk
->serial
);
305 printf(" Disk%02d Serial : %s\n", index
, str
);
306 s
= __le32_to_cpu(disk
->status
);
307 printf(" State :%s%s%s%s\n", s
&SPARE_DISK
? " spare" : "",
308 s
&CONFIGURED_DISK
? " active" : "",
309 s
&FAILED_DISK
? " failed" : "",
310 s
&USABLE_DISK
? " usable" : "");
311 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
312 sz
= __le32_to_cpu(disk
->total_blocks
) - mpb_sectors(mpb
);
313 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
314 human_size(sz
* 512));
317 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
319 struct intel_super
*super
= st
->sb
;
320 struct imsm_super
*mpb
= super
->mpb
;
321 char str
[MAX_SIGNATURE_LENGTH
];
325 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
326 printf(" Magic : %s\n", str
);
327 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
328 printf(" Version : %s\n", get_imsm_version(mpb
));
329 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
330 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
331 sum
= __le32_to_cpu(mpb
->check_sum
);
332 printf(" Checksum : %08x %s\n", sum
,
333 gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
334 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
));
335 printf(" Disks : %d\n", mpb
->num_disks
);
336 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
337 print_imsm_disk(mpb
, super
->disks
->index
);
338 for (i
= 0; i
< mpb
->num_raid_devs
; i
++)
339 print_imsm_dev(get_imsm_dev(mpb
, i
), super
->disks
->index
);
340 for (i
= 0; i
< mpb
->num_disks
; i
++) {
341 if (i
== super
->disks
->index
)
343 print_imsm_disk(mpb
, i
);
347 static void brief_examine_super_imsm(struct supertype
*st
)
349 struct intel_super
*super
= st
->sb
;
350 struct imsm_super
*mpb
= super
->mpb
;
352 printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n",
353 __le32_to_cpu(mpb
->family_num
));
356 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
358 printf("%s\n", __FUNCTION__
);
361 static void brief_detail_super_imsm(struct supertype
*st
)
363 printf("%s\n", __FUNCTION__
);
367 static int match_home_imsm(struct supertype
*st
, char *homehost
)
369 printf("%s\n", __FUNCTION__
);
374 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
376 printf("%s\n", __FUNCTION__
);
380 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
382 __u8
*v
= get_imsm_version(mpb
);
383 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
384 char major
[] = { 0, 0, 0 };
385 char minor
[] = { 0 ,0, 0 };
386 char patch
[] = { 0, 0, 0 };
387 char *ver_parse
[] = { major
, minor
, patch
};
391 while (*v
!= '\0' && v
< end
) {
392 if (*v
!= '.' && j
< 2)
393 ver_parse
[i
][j
++] = *v
;
401 *m
= strtol(minor
, NULL
, 0);
402 *p
= strtol(patch
, NULL
, 0);
405 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
)
407 struct intel_super
*super
= st
->sb
;
408 struct imsm_super
*mpb
= super
->mpb
;
409 struct imsm_disk
*disk
;
413 info
->array
.major_version
= 2000;
414 get_imsm_numerical_version(mpb
, &info
->array
.minor_version
,
415 &info
->array
.patch_version
);
416 info
->array
.raid_disks
= mpb
->num_disks
;
417 info
->array
.level
= LEVEL_CONTAINER
;
418 info
->array
.layout
= 0;
419 info
->array
.md_minor
= -1;
420 info
->array
.ctime
= __le32_to_cpu(mpb
->generation_num
); //??
421 info
->array
.utime
= 0;
422 info
->array
.chunk_size
= 0;
424 info
->disk
.major
= 0;
425 info
->disk
.minor
= 0;
426 info
->disk
.number
= super
->disks
->index
;
427 info
->disk
.raid_disk
= -1;
428 /* is this disk a member of a raid device? */
429 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
430 struct imsm_dev
*dev
= get_imsm_dev(mpb
, i
);
431 struct imsm_map
*map
= dev
->vol
.map
;
433 for (j
= 0; j
< map
->num_members
; j
++) {
434 __u32 index
= get_imsm_disk_idx(map
, j
);
436 if (index
== super
->disks
->index
) {
437 info
->disk
.raid_disk
= super
->disks
->index
;
441 if (info
->disk
.raid_disk
!= -1)
444 disk
= get_imsm_disk(mpb
, super
->disks
->index
);
445 s
= __le32_to_cpu(disk
->status
);
446 info
->disk
.state
= s
& CONFIGURED_DISK
? (1 << MD_DISK_ACTIVE
) : 0;
447 info
->disk
.state
|= s
& FAILED_DISK
? (1 << MD_DISK_FAULTY
) : 0;
448 info
->disk
.state
|= s
& USABLE_DISK
? (1 << MD_DISK_SYNC
) : 0;
449 info
->reshape_active
= 0;
451 strcpy(info
->text_version
, "imsm");
454 static void getinfo_super_imsm_raid(struct supertype
*st
, struct mdinfo
*info
)
456 printf("%s\n", __FUNCTION__
);
458 sprintf(info
->text_version
, "/%s/%d",
459 devnum2devname(st
->container_dev
),
460 info
->container_member
); // FIXME is this even set here?
463 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
464 char *update
, char *devname
, int verbose
,
465 int uuid_set
, char *homehost
)
469 /* For 'assemble' and 'force' we need to return non-zero if any
470 * change was made. For others, the return value is ignored.
471 * Update options are:
472 * force-one : This device looks a bit old but needs to be included,
473 * update age info appropriately.
474 * assemble: clear any 'faulty' flag to allow this device to
476 * force-array: Array is degraded but being forced, mark it clean
477 * if that will be needed to assemble it.
479 * newdev: not used ????
480 * grow: Array has gained a new device - this is currently for
482 * resync: mark as dirty so a resync will happen.
483 * name: update the name - preserving the homehost
485 * Following are not relevant for this imsm:
486 * sparc2.2 : update from old dodgey metadata
487 * super-minor: change the preferred_minor number
488 * summaries: update redundant counters.
489 * uuid: Change the uuid of the array to match watch is given
490 * homehost: update the recorded homehost
491 * _reshape_progress: record new reshape_progress position.
494 //struct intel_super *super = st->sb;
495 //struct imsm_super *mpb = super->mpb;
497 if (strcmp(update
, "grow") == 0) {
499 if (strcmp(update
, "resync") == 0) {
500 /* dev->vol.dirty = 1; */
503 /* IMSM has no concept of UUID or homehost */
508 static __u64
avail_size_imsm(struct supertype
*st
, __u64 size
)
510 printf("%s\n", __FUNCTION__
);
515 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
519 * 0 same, or first was empty, and second was copied
520 * 1 second had wrong number
524 struct intel_super
*first
= st
->sb
;
525 struct intel_super
*sec
= tst
->sb
;
533 if (memcmp(first
->mpb
->sig
, sec
->mpb
->sig
, MAX_SIGNATURE_LENGTH
) != 0)
535 if (first
->mpb
->family_num
!= sec
->mpb
->family_num
)
537 if (first
->mpb
->mpb_size
!= sec
->mpb
->mpb_size
)
539 if (first
->mpb
->check_sum
!= sec
->mpb
->check_sum
)
545 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
547 static int imsm_read_serial(int fd
, char *devname
,
548 __u8 serial
[MAX_RAID_SERIAL_LEN
])
550 unsigned char scsi_serial
[255];
556 memset(scsi_serial
, 0, sizeof(scsi_serial
));
558 sg_fd
= sysfs_disk_to_sg(fd
);
562 Name
": Failed to open sg interface for %s: %s\n",
563 devname
, strerror(errno
));
567 rv
= scsi_get_serial(sg_fd
, scsi_serial
, sizeof(scsi_serial
));
573 Name
": Failed to retrieve serial for %s\n",
578 rsp_len
= scsi_serial
[3];
579 for (i
= 0, cnt
= 0; i
< rsp_len
; i
++) {
580 if (!isspace(scsi_serial
[4 + i
]))
581 serial
[cnt
++] = scsi_serial
[4 + i
];
582 if (cnt
== MAX_RAID_SERIAL_LEN
)
586 serial
[MAX_RAID_SERIAL_LEN
- 1] = '\0';
592 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
594 struct imsm_super
*mpb
= super
->mpb
;
597 struct imsm_disk
*disk
;
601 dl
= malloc(sizeof(*dl
));
605 Name
": failed to allocate disk buffer for %s\n",
609 memset(dl
, 0, sizeof(*dl
));
612 dl
->major
= major(stb
.st_rdev
);
613 dl
->minor
= minor(stb
.st_rdev
);
614 dl
->next
= super
->disks
;
615 dl
->fd
= keep_fd
? fd
: -1;
616 dl
->devname
= devname
? strdup(devname
) : NULL
;
619 rv
= imsm_read_serial(fd
, devname
, dl
->serial
);
624 /* look up this disk's index */
625 for (i
= 0; i
< mpb
->num_disks
; i
++) {
626 disk
= get_imsm_disk(mpb
, i
);
628 if (memcmp(disk
->serial
, dl
->serial
, MAX_RAID_SERIAL_LEN
) == 0)
632 if (i
> mpb
->num_disks
)
640 /* load_imsm_mpb - read matrix metadata
641 * allocates super->mpb to be freed by free_super
643 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
645 unsigned long long dsize
;
646 size_t len
, mpb_size
;
647 unsigned long long sectors
;
649 struct imsm_super anchor
;
652 memset(super
, 0, sizeof(*super
));
653 get_dev_size(fd
, NULL
, &dsize
);
655 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
658 Name
": Cannot seek to anchor block on %s: %s\n",
659 devname
, strerror(errno
));
663 len
= sizeof(anchor
);
664 if (read(fd
, &anchor
, len
) != len
) {
667 Name
": Cannot read anchor block on %s: %s\n",
668 devname
, strerror(errno
));
672 if (strncmp((char *) anchor
.sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
675 Name
": no IMSM anchor on %s\n", devname
);
679 mpb_size
= __le32_to_cpu(anchor
.mpb_size
);
680 super
->mpb
= malloc(mpb_size
< 512 ? 512 : mpb_size
);
684 Name
": unable to allocate %zu byte mpb buffer\n",
688 memcpy(super
->buf
, &anchor
, sizeof(anchor
));
690 /* read the rest of the first block */
691 len
= 512 - sizeof(anchor
);
692 if (read(fd
, super
->buf
+ sizeof(anchor
), len
) != len
) {
695 Name
": Cannot read anchor remainder on %s: %s\n",
696 devname
, strerror(errno
));
700 sectors
= mpb_sectors(&anchor
) - 1;
702 return load_imsm_disk(fd
, super
, devname
, 0);
704 /* read the extended mpb */
705 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
708 Name
": Cannot seek to extended mpb on %s: %s\n",
709 devname
, strerror(errno
));
713 len
= mpb_size
- 512;
714 if (read(fd
, super
->buf
+ 512, len
) != len
) {
717 Name
": Cannot read extended mpb on %s: %s\n",
718 devname
, strerror(errno
));
722 check_sum
= gen_imsm_checksum(super
->mpb
);
723 if (check_sum
!= __le32_to_cpu(super
->mpb
->check_sum
)) {
726 Name
": IMSM checksum %x != %x on %s\n",
727 check_sum
, __le32_to_cpu(super
->mpb
->check_sum
),
732 return load_imsm_disk(fd
, super
, devname
, 0);
735 struct superswitch super_imsm_container
;
737 static void free_imsm_disks(struct intel_super
*super
)
739 while (super
->disks
) {
740 struct dl
*d
= super
->disks
;
742 super
->disks
= d
->next
;
751 static void free_imsm(struct intel_super
*super
)
755 free_imsm_disks(super
);
760 static void free_super_imsm(struct supertype
*st
)
762 struct intel_super
*super
= st
->sb
;
772 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
773 char *devname
, int keep_fd
)
776 struct intel_super
*super
;
777 struct mdinfo
*sd
, *best
= NULL
;
784 /* check if this disk is a member of an active array */
785 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
789 if (sra
->array
.major_version
!= -1 ||
790 sra
->array
.minor_version
!= -2 ||
791 strcmp(sra
->text_version
, "imsm") != 0)
794 super
= malloc(sizeof(*super
));
798 /* find the most up to date disk in this array */
799 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
800 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
801 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
806 rv
= load_imsm_mpb(dfd
, super
, NULL
);
810 gen
= __le32_to_cpu(super
->mpb
->generation_num
);
811 if (!best
|| gen
> bestgen
) {
826 /* load the most up to date anchor */
827 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
828 dfd
= dev_open(nm
, O_RDONLY
);
833 rv
= load_imsm_mpb(dfd
, super
, NULL
);
840 /* reset the disk list */
841 free_imsm_disks(super
);
843 /* populate disk list */
844 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
845 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
846 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
851 load_imsm_disk(dfd
, super
, NULL
, keep_fd
);
857 if (st
->ss
== NULL
) {
858 st
->ss
= &super_imsm_container
;
859 st
->minor_version
= 0;
860 st
->max_devs
= IMSM_MAX_DEVICES
;
861 st
->container_dev
= fd2devnum(fd
);
868 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
870 struct intel_super
*super
;
874 if (load_super_imsm_all(st
, fd
, &st
->sb
, devname
, 1) == 0)
878 super
= malloc(sizeof(*super
));
881 Name
": malloc of %zu failed.\n",
886 rv
= load_imsm_mpb(fd
, super
, devname
);
891 Name
": Failed to load all information "
892 "sections on %s\n", devname
);
898 if (st
->ss
== NULL
) {
899 st
->ss
= &super_imsm
;
900 st
->minor_version
= 0;
901 st
->max_devs
= IMSM_MAX_DEVICES
;
907 static int init_zero_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
908 unsigned long long size
, char *name
,
909 char *homehost
, int *uuid
)
911 printf("%s\n", __FUNCTION__
);
916 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
917 unsigned long long size
, char *name
,
918 char *homehost
, int *uuid
)
920 printf("%s\n", __FUNCTION__
);
925 static int init_super_imsm_raid(struct supertype
*st
, mdu_array_info_t
*info
,
926 unsigned long long size
, char *name
,
927 char *homehost
, int *uuid
)
929 printf("%s\n", __FUNCTION__
);
934 static void add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dinfo
,
935 int fd
, char *devname
)
937 printf("%s\n", __FUNCTION__
);
940 static void add_to_super_imsm_raid(struct supertype
*st
, mdu_disk_info_t
*dinfo
,
941 int fd
, char *devname
)
943 printf("%s\n", __FUNCTION__
);
946 static int write_init_super_imsm(struct supertype
*st
)
948 printf("%s\n", __FUNCTION__
);
953 static int store_zero_imsm(struct supertype
*st
, int fd
)
955 printf("%s\n", __FUNCTION__
);
960 static void getinfo_super_n_imsm_container(struct supertype
*st
, struct mdinfo
*info
)
962 /* just need offset and size...
965 struct intel_super
*super
= st
->sb
;
966 struct imsm_super
*mpb
= super
->mpb
;
967 struct imsm_disk
*disk
= get_imsm_disk(mpb
, info
->disk
.number
);
968 int sect
= mpb_sectors(mpb
);
970 info
->data_offset
= __le32_to_cpu(disk
->total_blocks
) - (2 + sect
- 1);
971 info
->component_size
= sect
;
974 static void getinfo_super_n_raid(struct supertype
*st
, struct mdinfo
*info
)
976 printf("%s\n", __FUNCTION__
);
979 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
980 int raiddisks
, int chunk
, unsigned long long size
,
981 char *subdev
, unsigned long long *freesize
)
983 printf("%s\n", __FUNCTION__
);
988 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
989 int layout
, int raiddisks
, int chunk
,
990 unsigned long long size
, char *subdev
,
991 unsigned long long *freesize
)
993 printf("%s\n", __FUNCTION__
);
998 static int validate_geometry_imsm_raid(struct supertype
*st
, int level
,
999 int layout
, int raiddisks
, int chunk
,
1000 unsigned long long size
, char *subdev
,
1001 unsigned long long *freesize
)
1003 printf("%s\n", __FUNCTION__
);
1008 static struct mdinfo
*container_content_imsm(struct supertype
*st
)
1010 /* Given a container loaded by load_super_imsm_all,
1011 * extract information about all the arrays into
1014 * For each imsm_dev create an mdinfo, fill it in,
1015 * then look for matching devices in super->disks
1016 * and create appropriate device mdinfo.
1018 struct intel_super
*super
= st
->sb
;
1019 struct imsm_super
*mpb
= super
->mpb
;
1020 struct mdinfo
*rest
= NULL
;
1023 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1024 struct imsm_dev
*dev
= get_imsm_dev(mpb
, i
);
1025 struct imsm_vol
*vol
= &dev
->vol
;
1026 struct imsm_map
*map
= vol
->map
;
1027 struct mdinfo
*this;
1031 this = malloc(sizeof(*this));
1032 memset(this, 0, sizeof(*this));
1036 this->array
.major_version
= 2000;
1037 get_imsm_numerical_version(mpb
, &this->array
.minor_version
,
1038 &this->array
.patch_version
);
1039 this->array
.level
= get_imsm_raid_level(map
);
1040 this->array
.raid_disks
= map
->num_members
;
1041 switch(this->array
.level
) {
1044 this->array
.layout
= 0;
1048 this->array
.layout
= ALGORITHM_LEFT_SYMMETRIC
;
1051 this->array
.layout
= 0x102; //FIXME is this correct?
1054 this->array
.layout
= -1; // FIXME
1056 this->array
.md_minor
= -1;
1057 this->array
.ctime
= 0;
1058 this->array
.utime
= 0;
1059 this->array
.chunk_size
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
1060 this->array
.state
= !vol
->dirty
;
1061 this->container_member
= i
;
1062 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
|| dev
->vol
.dirty
)
1063 this->resync_start
= 0;
1065 this->resync_start
= ~0ULL;
1067 strncpy(this->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
1068 this->name
[MAX_RAID_SERIAL_LEN
] = 0;
1070 sprintf(this->text_version
, "/%s/%d",
1071 devnum2devname(st
->container_dev
),
1072 this->container_member
);
1074 memset(this->uuid
, 0, sizeof(this->uuid
));
1076 sz
= __le32_to_cpu(dev
->size_high
);
1078 sz
+= __le32_to_cpu(dev
->size_low
);
1079 this->component_size
= sz
;
1080 this->array
.size
= this->component_size
/ 2;
1082 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
1083 struct imsm_disk
*disk
;
1084 struct mdinfo
*info_d
;
1089 idx
= __le32_to_cpu(map
->disk_ord_tbl
[slot
] & ~(0xff << 24));
1090 for (d
= super
->disks
; d
; d
= d
->next
)
1091 if (d
->index
== idx
)
1095 break; /* shouldn't this be continue ?? */
1097 info_d
= malloc(sizeof(*info_d
));
1099 break; /* ditto ?? */
1100 memset(info_d
, 0, sizeof(*info_d
));
1101 info_d
->next
= this->devs
;
1102 this->devs
= info_d
;
1104 disk
= get_imsm_disk(mpb
, idx
);
1105 s
= __le32_to_cpu(disk
->status
);
1107 info_d
->disk
.number
= d
->index
;
1108 info_d
->disk
.major
= d
->major
;
1109 info_d
->disk
.minor
= d
->minor
;
1110 info_d
->disk
.raid_disk
= slot
;
1111 info_d
->disk
.state
= s
& CONFIGURED_DISK
? (1 << MD_DISK_ACTIVE
) : 0;
1112 info_d
->disk
.state
|= s
& FAILED_DISK
? (1 << MD_DISK_FAULTY
) : 0;
1113 info_d
->disk
.state
|= s
& USABLE_DISK
? (1 << MD_DISK_SYNC
) : 0;
1115 this->array
.working_disks
++;
1117 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
1118 info_d
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
1119 info_d
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
1121 strcpy(info_d
->name
, d
->devname
);
1129 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
1132 fprintf(stderr
, "imsm: open_new %s\n", inst
);
1133 a
->info
.container_member
= atoi(inst
);
1137 static void imsm_set_array_state(struct active_array
*a
, int consistent
)
1139 int inst
= a
->info
.container_member
;
1140 struct intel_super
*super
= a
->container
->sb
;
1141 struct imsm_dev
*dev
= get_imsm_dev(super
->mpb
, inst
);
1142 int dirty
= !consistent
|| (a
->resync_start
!= ~0ULL);
1144 if (dev
->vol
.dirty
!= dirty
) {
1145 fprintf(stderr
, "imsm: mark '%s' (%llu)\n",
1146 dirty
?"dirty":"clean", a
->resync_start
);
1148 dev
->vol
.dirty
= dirty
;
1149 super
->updates_pending
++;
1153 static __u8
imsm_check_degraded(struct imsm_super
*mpb
, int n
, int failed
)
1155 struct imsm_dev
*dev
= get_imsm_dev(mpb
, n
);
1156 struct imsm_map
*map
= dev
->vol
.map
;
1159 return map
->map_state
;
1161 switch (get_imsm_raid_level(map
)) {
1163 return IMSM_T_STATE_FAILED
;
1166 if (failed
< map
->num_members
)
1167 return IMSM_T_STATE_DEGRADED
;
1169 return IMSM_T_STATE_FAILED
;
1174 * check to see if any mirrors have failed,
1175 * otherwise we are degraded
1177 int device_per_mirror
= 2; /* FIXME is this always the case?
1178 * and are they always adjacent?
1183 for (i
= 0; i
< map
->num_members
; i
++) {
1184 int idx
= get_imsm_disk_idx(map
, i
);
1185 struct imsm_disk
*disk
= get_imsm_disk(mpb
, idx
);
1187 if (__le32_to_cpu(disk
->status
) & FAILED_DISK
)
1190 if (failed
>= device_per_mirror
)
1191 return IMSM_T_STATE_FAILED
;
1193 /* reset 'failed' for next mirror set */
1194 if (!((i
+ 1) % device_per_mirror
))
1198 return IMSM_T_STATE_DEGRADED
;
1202 return IMSM_T_STATE_DEGRADED
;
1204 return IMSM_T_STATE_FAILED
;
1210 return map
->map_state
;
1213 static int imsm_count_failed(struct imsm_super
*mpb
, struct imsm_map
*map
)
1217 struct imsm_disk
*disk
;
1219 for (i
= 0; i
< map
->num_members
; i
++) {
1220 int idx
= get_imsm_disk_idx(map
, i
);
1222 disk
= get_imsm_disk(mpb
, idx
);
1223 if (__le32_to_cpu(disk
->status
) & FAILED_DISK
)
1230 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
1232 int inst
= a
->info
.container_member
;
1233 struct intel_super
*super
= a
->container
->sb
;
1234 struct imsm_dev
*dev
= get_imsm_dev(super
->mpb
, inst
);
1235 struct imsm_map
*map
= dev
->vol
.map
;
1236 struct imsm_disk
*disk
;
1239 int new_failure
= 0;
1241 if (n
> map
->num_members
)
1242 fprintf(stderr
, "imsm: set_disk %d out of range 0..%d\n",
1243 n
, map
->num_members
- 1);
1248 fprintf(stderr
, "imsm: set_disk %d:%x\n", n
, state
);
1250 disk
= get_imsm_disk(super
->mpb
, get_imsm_disk_idx(map
, n
));
1252 /* check if we have seen this failure before */
1253 status
= __le32_to_cpu(disk
->status
);
1254 if ((state
& DS_FAULTY
) && !(status
& FAILED_DISK
)) {
1255 status
|= FAILED_DISK
;
1256 disk
->status
= __cpu_to_le32(status
);
1261 * the number of failures have changed, count up 'failed' to determine
1262 * degraded / failed status
1264 if (new_failure
&& map
->map_state
!= IMSM_T_STATE_FAILED
)
1265 failed
= imsm_count_failed(super
->mpb
, map
);
1268 map
->map_state
= imsm_check_degraded(super
->mpb
, inst
, failed
);
1271 super
->updates_pending
++;
1274 static int store_imsm_mpb(int fd
, struct intel_super
*super
)
1276 struct imsm_super
*mpb
= super
->mpb
;
1277 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
1278 unsigned long long dsize
;
1279 unsigned long long sectors
;
1281 get_dev_size(fd
, NULL
, &dsize
);
1283 /* first block is stored on second to last sector of the disk */
1284 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
1287 if (write(fd
, super
->buf
, 512) != 512)
1290 if (mpb_size
<= 512)
1293 /* -1 because we already wrote a sector */
1294 sectors
= mpb_sectors(mpb
) - 1;
1296 /* write the extended mpb to the sectors preceeding the anchor */
1297 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0)
1300 if (write(fd
, super
->buf
+ 512, mpb_size
- 512) != mpb_size
- 512)
1308 static void imsm_sync_metadata(struct supertype
*container
)
1310 struct intel_super
*super
= container
->sb
;
1311 struct imsm_super
*mpb
= super
->mpb
;
1316 if (!super
->updates_pending
)
1319 fprintf(stderr
, "imsm: sync_metadata\n");
1321 /* 'generation' is incremented everytime the metadata is written */
1322 generation
= __le32_to_cpu(mpb
->generation_num
);
1324 mpb
->generation_num
= __cpu_to_le32(generation
);
1326 /* recalculate checksum */
1327 sum
= gen_imsm_checksum(mpb
);
1328 mpb
->check_sum
= __cpu_to_le32(sum
);
1330 for (d
= super
->disks
; d
; d
= d
->next
)
1331 if (store_imsm_mpb(d
->fd
, super
))
1332 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
1333 __func__
, d
->major
, d
->minor
, strerror(errno
));
1335 super
->updates_pending
= 0;
1338 struct superswitch super_imsm
= {
1340 .examine_super
= examine_super_imsm
,
1341 .brief_examine_super
= brief_examine_super_imsm
,
1342 .detail_super
= detail_super_imsm
,
1343 .brief_detail_super
= brief_detail_super_imsm
,
1345 .match_home
= match_home_imsm
,
1346 .uuid_from_super
= uuid_from_super_imsm
,
1347 .getinfo_super
= getinfo_super_imsm
,
1348 .update_super
= update_super_imsm
,
1350 .avail_size
= avail_size_imsm
,
1352 .compare_super
= compare_super_imsm
,
1354 .load_super
= load_super_imsm
,
1355 .init_super
= init_zero_imsm
,
1356 .store_super
= store_zero_imsm
,
1357 .free_super
= free_super_imsm
,
1358 .match_metadata_desc
= match_metadata_desc_imsm
,
1359 .getinfo_super_n
= getinfo_super_n_imsm_container
,
1361 .validate_geometry
= validate_geometry_imsm
,
1367 .open_new
= imsm_open_new
,
1368 .load_super
= load_super_imsm
,
1369 .set_array_state
= imsm_set_array_state
,
1370 .set_disk
= imsm_set_disk
,
1371 .sync_metadata
= imsm_sync_metadata
,
1374 /* super_imsm_container is set by validate_geometry_imsm when given a
1375 * device that is not part of any array
1377 struct superswitch super_imsm_container
= {
1379 .validate_geometry
= validate_geometry_imsm_container
,
1380 .init_super
= init_super_imsm
,
1381 .add_to_super
= add_to_super_imsm
,
1382 .write_init_super
= write_init_super_imsm
,
1383 .getinfo_super
= getinfo_super_imsm
,
1384 .getinfo_super_n
= getinfo_super_n_imsm_container
,
1385 .load_super
= load_super_imsm
,
1388 .examine_super
= examine_super_imsm
,
1389 .brief_examine_super
= brief_examine_super_imsm
,
1390 .detail_super
= detail_super_imsm
,
1391 .brief_detail_super
= brief_detail_super_imsm
,
1394 .free_super
= free_super_imsm
,
1396 .container_content
= container_content_imsm
,
1403 struct superswitch super_imsm_raid
= {
1404 .update_super
= update_super_imsm
,
1405 .init_super
= init_super_imsm_raid
,
1406 .add_to_super
= add_to_super_imsm_raid
,
1407 .getinfo_super
= getinfo_super_imsm_raid
,
1408 .getinfo_super_n
= getinfo_super_n_raid
,
1409 .write_init_super
= write_init_super_imsm
,
1411 .load_super
= load_super_imsm
,
1412 .free_super
= free_super_imsm
,
1413 .match_metadata_desc
= match_metadata_desc_imsm_raid
,
1416 .validate_geometry
= validate_geometry_imsm_raid
,