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
34 #define MPB_SECTOR_CNT 418
35 #define IMSM_RESERVED_SECTORS 4096
37 /* Disk configuration info. */
38 #define IMSM_MAX_DEVICES 255
40 __u8 serial
[MAX_RAID_SERIAL_LEN
];/* 0xD8 - 0xE7 ascii serial number */
41 __u32 total_blocks
; /* 0xE8 - 0xEB total blocks */
42 __u32 scsi_id
; /* 0xEC - 0xEF scsi ID */
43 __u32 status
; /* 0xF0 - 0xF3 */
44 #define SPARE_DISK 0x01 /* Spare */
45 #define CONFIGURED_DISK 0x02 /* Member of some RaidDev */
46 #define FAILED_DISK 0x04 /* Permanent failure */
47 #define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */
49 #define IMSM_DISK_FILLERS 5
50 __u32 filler
[IMSM_DISK_FILLERS
]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */
53 /* RAID map configuration infos. */
55 __u32 pba_of_lba0
; /* start address of partition */
56 __u32 blocks_per_member
;/* blocks per member */
57 __u32 num_data_stripes
; /* number of data stripes */
58 __u16 blocks_per_strip
;
59 __u8 map_state
; /* Normal, Uninitialized, Degraded, Failed */
60 #define IMSM_T_STATE_NORMAL 0
61 #define IMSM_T_STATE_UNINITIALIZED 1
62 #define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */
63 #define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */
65 #define IMSM_T_RAID0 0
66 #define IMSM_T_RAID1 1
67 #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
68 __u8 num_members
; /* number of member disks */
70 __u32 filler
[7]; /* expansion area */
71 __u32 disk_ord_tbl
[1]; /* disk_ord_tbl[num_members],
73 } __attribute__ ((packed
));
77 __u8 migr_state
; /* Normal or Migrating */
78 __u8 migr_type
; /* Initializing, Rebuilding, ... */
82 struct imsm_map map
[1];
83 /* here comes another one if migr_state */
84 } __attribute__ ((packed
));
87 __u8 volume
[MAX_RAID_SERIAL_LEN
];
90 __u32 status
; /* Persistent RaidDev status */
91 __u32 reserved_blocks
; /* Reserved blocks at beginning of volume */
92 #define IMSM_DEV_FILLERS 12
93 __u32 filler
[IMSM_DEV_FILLERS
];
95 } __attribute__ ((packed
));
98 __u8 sig
[MAX_SIGNATURE_LENGTH
]; /* 0x00 - 0x1F */
99 __u32 check_sum
; /* 0x20 - 0x23 MPB Checksum */
100 __u32 mpb_size
; /* 0x24 - 0x27 Size of MPB */
101 __u32 family_num
; /* 0x28 - 0x2B Checksum from first time this config was written */
102 __u32 generation_num
; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
103 __u32 reserved
[2]; /* 0x30 - 0x37 */
104 __u8 num_disks
; /* 0x38 Number of configured disks */
105 __u8 num_raid_devs
; /* 0x39 Number of configured volumes */
106 __u8 fill
[2]; /* 0x3A - 0x3B */
107 #define IMSM_FILLERS 39
108 __u32 filler
[IMSM_FILLERS
]; /* 0x3C - 0xD7 RAID_MPB_FILLERS */
109 struct imsm_disk disk
[1]; /* 0xD8 diskTbl[numDisks] */
110 /* here comes imsm_dev[num_raid_devs] */
111 } __attribute__ ((packed
));
114 static char *map_state_str
[] = { "normal", "uninitialized", "degraded", "failed" };
117 static unsigned int sector_count(__u32 bytes
)
119 return ((bytes
+ (512-1)) & (~(512-1))) / 512;
122 static unsigned int mpb_sectors(struct imsm_super
*mpb
)
124 return sector_count(__le32_to_cpu(mpb
->mpb_size
));
127 /* internal representation of IMSM metadata */
130 struct imsm_super
*mpb
;
133 int updates_pending
; /* count of pending updates for mdmon */
134 int creating_imsm
; /* flag to indicate container creation */
135 int creating_dev
; /* index of raid device undergoing creation */
139 __u8 serial
[MAX_RAID_SERIAL_LEN
];
147 unsigned long long start
, size
;
150 static struct supertype
*match_metadata_desc_imsm(char *arg
)
152 struct supertype
*st
;
154 if (strcmp(arg
, "imsm") != 0 &&
155 strcmp(arg
, "default") != 0
159 st
= malloc(sizeof(*st
));
160 st
->ss
= &super_imsm
;
161 st
->max_devs
= IMSM_MAX_DEVICES
;
162 st
->minor_version
= 0;
167 static struct supertype
*match_metadata_desc_imsm_volume(char *arg
)
169 struct supertype
*st
;
171 if (strcmp(arg
, "imsm/volume") != 0 &&
172 strcmp(arg
, "raid") != 0 &&
173 strcmp(arg
, "default") != 0
177 st
= malloc(sizeof(*st
));
178 st
->ss
= &super_imsm_volume
;
179 st
->max_devs
= IMSM_MAX_DEVICES
;
180 st
->minor_version
= 0;
185 static __u8
*get_imsm_version(struct imsm_super
*mpb
)
187 return &mpb
->sig
[MPB_SIG_LEN
];
190 static struct imsm_disk
*get_imsm_disk(struct imsm_super
*mpb
, __u8 index
)
192 if (index
> mpb
->num_disks
- 1)
194 return &mpb
->disk
[index
];
197 static __u32
gen_imsm_checksum(struct imsm_super
*mpb
)
199 __u32 end
= mpb
->mpb_size
/ sizeof(end
);
200 __u32
*p
= (__u32
*) mpb
;
204 sum
+= __le32_to_cpu(*p
++);
206 return sum
- __le32_to_cpu(mpb
->check_sum
);
209 static size_t sizeof_imsm_dev(struct imsm_dev
*dev
)
211 size_t size
= sizeof(*dev
);
213 /* each map has disk_ord_tbl[num_members - 1] additional space */
214 size
+= sizeof(__u32
) * (dev
->vol
.map
[0].num_members
- 1);
216 /* migrating means an additional map */
217 if (dev
->vol
.migr_state
) {
218 size
+= sizeof(struct imsm_map
);
219 size
+= sizeof(__u32
) * (dev
->vol
.map
[1].num_members
- 1);
225 static struct imsm_dev
*get_imsm_dev(struct imsm_super
*mpb
, __u8 index
)
231 if (index
> mpb
->num_raid_devs
- 1)
234 /* devices start after all disks */
235 offset
= ((void *) &mpb
->disk
[mpb
->num_disks
]) - _mpb
;
237 for (i
= 0; i
<= index
; i
++)
239 return _mpb
+ offset
;
241 offset
+= sizeof_imsm_dev(_mpb
+ offset
);
246 static __u32
get_imsm_disk_idx(struct imsm_map
*map
, int slot
)
248 __u32
*ord_tbl
= &map
->disk_ord_tbl
[slot
];
250 /* top byte is 'special' */
251 return __le32_to_cpu(*ord_tbl
& ~(0xff << 24));
254 static int get_imsm_raid_level(struct imsm_map
*map
)
256 if (map
->raid_level
== 1) {
257 if (map
->num_members
== 2)
263 return map
->raid_level
;
266 static int cmp_extent(const void *av
, const void *bv
)
268 const struct extent
*a
= av
;
269 const struct extent
*b
= bv
;
270 if (a
->start
< b
->start
)
272 if (a
->start
> b
->start
)
277 static struct extent
*get_extents(struct intel_super
*super
, struct dl
*dl
)
279 /* find a list of used extents on the given physical device */
280 struct imsm_super
*mpb
= super
->mpb
;
281 struct imsm_disk
*disk
;
282 struct extent
*rv
, *e
;
286 disk
= get_imsm_disk(mpb
, dl
->index
);
290 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
291 struct imsm_dev
*dev
= get_imsm_dev(mpb
, i
);
292 struct imsm_map
*map
= dev
->vol
.map
;
294 for (j
= 0; j
< map
->num_members
; j
++) {
295 __u32 index
= get_imsm_disk_idx(map
, j
);
297 if (index
== dl
->index
)
301 rv
= malloc(sizeof(struct extent
) * (memberships
+ 1));
306 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
307 struct imsm_dev
*dev
= get_imsm_dev(mpb
, i
);
308 struct imsm_map
*map
= dev
->vol
.map
;
310 for (j
= 0; j
< map
->num_members
; j
++) {
311 __u32 index
= get_imsm_disk_idx(map
, j
);
313 if (index
== dl
->index
) {
314 e
->start
= __le32_to_cpu(map
->pba_of_lba0
);
315 e
->size
= __le32_to_cpu(map
->blocks_per_member
);
320 qsort(rv
, memberships
, sizeof(*rv
), cmp_extent
);
322 e
->start
= __le32_to_cpu(disk
->total_blocks
) -
323 (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
329 static void print_imsm_dev(struct imsm_dev
*dev
, int index
)
333 struct imsm_map
*map
= dev
->vol
.map
;
336 printf("[%s]:\n", dev
->volume
);
337 printf(" RAID Level : %d\n", get_imsm_raid_level(map
));
338 printf(" Members : %d\n", map
->num_members
);
339 for (slot
= 0; slot
< map
->num_members
; slot
++)
340 if (index
== get_imsm_disk_idx(map
, slot
))
342 if (slot
< map
->num_members
)
343 printf(" This Slot : %d\n", slot
);
345 printf(" This Slot : ?\n");
346 sz
= __le32_to_cpu(dev
->size_high
);
348 sz
+= __le32_to_cpu(dev
->size_low
);
349 printf(" Array Size : %llu%s\n", (unsigned long long)sz
,
350 human_size(sz
* 512));
351 sz
= __le32_to_cpu(map
->blocks_per_member
);
352 printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz
,
353 human_size(sz
* 512));
354 printf(" Sector Offset : %u\n",
355 __le32_to_cpu(map
->pba_of_lba0
));
356 printf(" Num Stripes : %u\n",
357 __le32_to_cpu(map
->num_data_stripes
));
358 printf(" Chunk Size : %u KiB\n",
359 __le16_to_cpu(map
->blocks_per_strip
) / 2);
360 printf(" Reserved : %d\n", __le32_to_cpu(dev
->reserved_blocks
));
361 printf(" Migrate State : %s\n", dev
->vol
.migr_state
? "migrating" : "idle");
362 printf(" Dirty State : %s\n", dev
->vol
.dirty
? "dirty" : "clean");
363 printf(" Map State : %s\n", map_state_str
[map
->map_state
]);
366 static void print_imsm_disk(struct imsm_super
*mpb
, int index
)
368 struct imsm_disk
*disk
= get_imsm_disk(mpb
, index
);
369 char str
[MAX_RAID_SERIAL_LEN
];
374 snprintf(str
, MAX_RAID_SERIAL_LEN
, "%s", disk
->serial
);
375 printf(" Disk%02d Serial : %s\n", index
, str
);
376 s
= __le32_to_cpu(disk
->status
);
377 printf(" State :%s%s%s%s\n", s
&SPARE_DISK
? " spare" : "",
378 s
&CONFIGURED_DISK
? " active" : "",
379 s
&FAILED_DISK
? " failed" : "",
380 s
&USABLE_DISK
? " usable" : "");
381 printf(" Id : %08x\n", __le32_to_cpu(disk
->scsi_id
));
382 sz
= __le32_to_cpu(disk
->total_blocks
) -
383 (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
* mpb
->num_raid_devs
);
384 printf(" Usable Size : %llu%s\n", (unsigned long long)sz
,
385 human_size(sz
* 512));
388 static void examine_super_imsm(struct supertype
*st
, char *homehost
)
390 struct intel_super
*super
= st
->sb
;
391 struct imsm_super
*mpb
= super
->mpb
;
392 char str
[MAX_SIGNATURE_LENGTH
];
396 snprintf(str
, MPB_SIG_LEN
, "%s", mpb
->sig
);
397 printf(" Magic : %s\n", str
);
398 snprintf(str
, strlen(MPB_VERSION_RAID0
), "%s", get_imsm_version(mpb
));
399 printf(" Version : %s\n", get_imsm_version(mpb
));
400 printf(" Family : %08x\n", __le32_to_cpu(mpb
->family_num
));
401 printf(" Generation : %08x\n", __le32_to_cpu(mpb
->generation_num
));
402 sum
= __le32_to_cpu(mpb
->check_sum
);
403 printf(" Checksum : %08x %s\n", sum
,
404 gen_imsm_checksum(mpb
) == sum
? "correct" : "incorrect");
405 printf(" MPB Sectors : %d\n", mpb_sectors(mpb
));
406 printf(" Disks : %d\n", mpb
->num_disks
);
407 printf(" RAID Devices : %d\n", mpb
->num_raid_devs
);
408 print_imsm_disk(mpb
, super
->disks
->index
);
409 for (i
= 0; i
< mpb
->num_raid_devs
; i
++)
410 print_imsm_dev(get_imsm_dev(mpb
, i
), super
->disks
->index
);
411 for (i
= 0; i
< mpb
->num_disks
; i
++) {
412 if (i
== super
->disks
->index
)
414 print_imsm_disk(mpb
, i
);
418 static void brief_examine_super_imsm(struct supertype
*st
)
420 struct intel_super
*super
= st
->sb
;
421 struct imsm_super
*mpb
= super
->mpb
;
423 printf("ARRAY /dev/imsm family=%08x metadata=external:imsm\n",
424 __le32_to_cpu(mpb
->family_num
));
427 static void detail_super_imsm(struct supertype
*st
, char *homehost
)
429 printf("%s\n", __FUNCTION__
);
432 static void brief_detail_super_imsm(struct supertype
*st
)
434 printf("%s\n", __FUNCTION__
);
438 static int match_home_imsm(struct supertype
*st
, char *homehost
)
440 printf("%s\n", __FUNCTION__
);
445 static void uuid_from_super_imsm(struct supertype
*st
, int uuid
[4])
447 printf("%s\n", __FUNCTION__
);
451 get_imsm_numerical_version(struct imsm_super
*mpb
, int *m
, int *p
)
453 __u8
*v
= get_imsm_version(mpb
);
454 __u8
*end
= mpb
->sig
+ MAX_SIGNATURE_LENGTH
;
455 char major
[] = { 0, 0, 0 };
456 char minor
[] = { 0 ,0, 0 };
457 char patch
[] = { 0, 0, 0 };
458 char *ver_parse
[] = { major
, minor
, patch
};
462 while (*v
!= '\0' && v
< end
) {
463 if (*v
!= '.' && j
< 2)
464 ver_parse
[i
][j
++] = *v
;
472 *m
= strtol(minor
, NULL
, 0);
473 *p
= strtol(patch
, NULL
, 0);
476 static int imsm_level_to_layout(int level
)
484 return ALGORITHM_LEFT_SYMMETRIC
;
486 return 0x102; //FIXME is this correct?
491 static void getinfo_super_imsm(struct supertype
*st
, struct mdinfo
*info
)
493 struct intel_super
*super
= st
->sb
;
494 struct imsm_super
*mpb
= super
->mpb
;
495 struct imsm_disk
*disk
;
499 info
->array
.major_version
= 2000;
500 get_imsm_numerical_version(mpb
, &info
->array
.minor_version
,
501 &info
->array
.patch_version
);
502 info
->array
.raid_disks
= mpb
->num_disks
;
503 info
->array
.level
= LEVEL_CONTAINER
;
504 info
->array
.layout
= 0;
505 info
->array
.md_minor
= -1;
506 info
->array
.ctime
= 0; /* N/A for imsm */
507 info
->array
.utime
= 0;
508 info
->array
.chunk_size
= 0;
510 info
->disk
.major
= 0;
511 info
->disk
.minor
= 0;
512 info
->disk
.raid_disk
= -1;
513 info
->reshape_active
= 0;
514 strcpy(info
->text_version
, "imsm");
515 info
->disk
.number
= -1;
516 info
->disk
.state
= 0;
521 info
->disk
.number
= super
->disks
->index
;
522 /* is this disk a member of a raid device? */
523 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
524 struct imsm_dev
*dev
= get_imsm_dev(mpb
, i
);
525 struct imsm_map
*map
= dev
->vol
.map
;
527 for (j
= 0; j
< map
->num_members
; j
++) {
528 __u32 index
= get_imsm_disk_idx(map
, j
);
530 if (index
== super
->disks
->index
) {
531 info
->disk
.raid_disk
= super
->disks
->index
;
535 if (info
->disk
.raid_disk
!= -1)
538 disk
= get_imsm_disk(mpb
, super
->disks
->index
);
539 s
= __le32_to_cpu(disk
->status
);
540 info
->disk
.state
= s
& CONFIGURED_DISK
? (1 << MD_DISK_ACTIVE
) : 0;
541 info
->disk
.state
|= s
& FAILED_DISK
? (1 << MD_DISK_FAULTY
) : 0;
542 info
->disk
.state
|= s
& USABLE_DISK
? (1 << MD_DISK_SYNC
) : 0;
546 static void getinfo_super_imsm_volume(struct supertype
*st
, struct mdinfo
*info
)
548 struct intel_super
*super
= st
->sb
;
549 struct imsm_super
*mpb
= super
->mpb
;
550 struct imsm_dev
*dev
= get_imsm_dev(mpb
, info
->container_member
);
551 struct imsm_map
*map
= &dev
->vol
.map
[0];
553 info
->array
.major_version
= 2000;
554 get_imsm_numerical_version(mpb
, &info
->array
.minor_version
,
555 &info
->array
.patch_version
);
556 info
->array
.raid_disks
= map
->num_members
;
557 info
->array
.level
= get_imsm_raid_level(map
);
558 info
->array
.layout
= imsm_level_to_layout(info
->array
.level
);
559 info
->array
.md_minor
= -1;
560 info
->array
.ctime
= 0;
561 info
->array
.utime
= 0;
562 info
->array
.chunk_size
= __le16_to_cpu(map
->blocks_per_strip
* 512);
564 info
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
565 info
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
567 info
->disk
.major
= 0;
568 info
->disk
.minor
= 0;
570 sprintf(info
->text_version
, "/%s/%d",
571 devnum2devname(st
->container_dev
),
572 info
->container_member
);
575 static int update_super_imsm(struct supertype
*st
, struct mdinfo
*info
,
576 char *update
, char *devname
, int verbose
,
577 int uuid_set
, char *homehost
)
581 /* For 'assemble' and 'force' we need to return non-zero if any
582 * change was made. For others, the return value is ignored.
583 * Update options are:
584 * force-one : This device looks a bit old but needs to be included,
585 * update age info appropriately.
586 * assemble: clear any 'faulty' flag to allow this device to
588 * force-array: Array is degraded but being forced, mark it clean
589 * if that will be needed to assemble it.
591 * newdev: not used ????
592 * grow: Array has gained a new device - this is currently for
594 * resync: mark as dirty so a resync will happen.
595 * name: update the name - preserving the homehost
597 * Following are not relevant for this imsm:
598 * sparc2.2 : update from old dodgey metadata
599 * super-minor: change the preferred_minor number
600 * summaries: update redundant counters.
601 * uuid: Change the uuid of the array to match watch is given
602 * homehost: update the recorded homehost
603 * _reshape_progress: record new reshape_progress position.
606 //struct intel_super *super = st->sb;
607 //struct imsm_super *mpb = super->mpb;
609 if (strcmp(update
, "grow") == 0) {
611 if (strcmp(update
, "resync") == 0) {
612 /* dev->vol.dirty = 1; */
615 /* IMSM has no concept of UUID or homehost */
620 static size_t disks_to_mpb_size(int disks
)
624 size
= sizeof(struct imsm_super
);
625 size
+= (disks
- 1) * sizeof(struct imsm_disk
);
626 size
+= 2 * sizeof(struct imsm_dev
);
627 /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
628 size
+= (4 - 2) * sizeof(struct imsm_map
);
629 /* 4 possible disk_ord_tbl's */
630 size
+= 4 * (disks
- 1) * sizeof(__u32
);
635 static __u64
avail_size_imsm(struct supertype
*st
, __u64 devsize
)
637 if (devsize
< (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
))
640 return devsize
- (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
643 static int compare_super_imsm(struct supertype
*st
, struct supertype
*tst
)
647 * 0 same, or first was empty, and second was copied
648 * 1 second had wrong number
652 struct intel_super
*first
= st
->sb
;
653 struct intel_super
*sec
= tst
->sb
;
661 if (memcmp(first
->mpb
->sig
, sec
->mpb
->sig
, MAX_SIGNATURE_LENGTH
) != 0)
663 if (first
->mpb
->family_num
!= sec
->mpb
->family_num
)
665 if (first
->mpb
->mpb_size
!= sec
->mpb
->mpb_size
)
667 if (first
->mpb
->check_sum
!= sec
->mpb
->check_sum
)
673 extern int scsi_get_serial(int fd
, void *buf
, size_t buf_len
);
675 static int imsm_read_serial(int fd
, char *devname
,
676 __u8 serial
[MAX_RAID_SERIAL_LEN
])
678 unsigned char scsi_serial
[255];
684 memset(scsi_serial
, 0, sizeof(scsi_serial
));
686 sg_fd
= sysfs_disk_to_sg(fd
);
690 Name
": Failed to open sg interface for %s: %s\n",
691 devname
, strerror(errno
));
695 rv
= scsi_get_serial(sg_fd
, scsi_serial
, sizeof(scsi_serial
));
701 Name
": Failed to retrieve serial for %s\n",
706 rsp_len
= scsi_serial
[3];
707 for (i
= 0, cnt
= 0; i
< rsp_len
; i
++) {
708 if (!isspace(scsi_serial
[4 + i
]))
709 serial
[cnt
++] = scsi_serial
[4 + i
];
710 if (cnt
== MAX_RAID_SERIAL_LEN
)
714 serial
[MAX_RAID_SERIAL_LEN
- 1] = '\0';
720 load_imsm_disk(int fd
, struct intel_super
*super
, char *devname
, int keep_fd
)
722 struct imsm_super
*mpb
= super
->mpb
;
725 struct imsm_disk
*disk
;
729 dl
= malloc(sizeof(*dl
));
733 Name
": failed to allocate disk buffer for %s\n",
737 memset(dl
, 0, sizeof(*dl
));
740 dl
->major
= major(stb
.st_rdev
);
741 dl
->minor
= minor(stb
.st_rdev
);
742 dl
->next
= super
->disks
;
743 dl
->fd
= keep_fd
? fd
: -1;
744 dl
->devname
= devname
? strdup(devname
) : NULL
;
747 rv
= imsm_read_serial(fd
, devname
, dl
->serial
);
752 /* look up this disk's index */
753 for (i
= 0; i
< mpb
->num_disks
; i
++) {
754 disk
= get_imsm_disk(mpb
, i
);
756 if (memcmp(disk
->serial
, dl
->serial
, MAX_RAID_SERIAL_LEN
) == 0)
760 if (i
> mpb
->num_disks
)
768 /* load_imsm_mpb - read matrix metadata
769 * allocates super->mpb to be freed by free_super
771 static int load_imsm_mpb(int fd
, struct intel_super
*super
, char *devname
)
773 unsigned long long dsize
;
774 size_t len
, mpb_size
;
775 unsigned long long sectors
;
777 struct imsm_super anchor
;
780 memset(super
, 0, sizeof(*super
));
781 get_dev_size(fd
, NULL
, &dsize
);
783 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0) {
786 Name
": Cannot seek to anchor block on %s: %s\n",
787 devname
, strerror(errno
));
791 len
= sizeof(anchor
);
792 if (read(fd
, &anchor
, len
) != len
) {
795 Name
": Cannot read anchor block on %s: %s\n",
796 devname
, strerror(errno
));
800 if (strncmp((char *) anchor
.sig
, MPB_SIGNATURE
, MPB_SIG_LEN
) != 0) {
803 Name
": no IMSM anchor on %s\n", devname
);
807 mpb_size
= __le32_to_cpu(anchor
.mpb_size
);
808 super
->mpb
= malloc(mpb_size
< 512 ? 512 : mpb_size
);
812 Name
": unable to allocate %zu byte mpb buffer\n",
816 memcpy(super
->buf
, &anchor
, sizeof(anchor
));
818 /* read the rest of the first block */
819 len
= 512 - sizeof(anchor
);
820 if (read(fd
, super
->buf
+ sizeof(anchor
), len
) != len
) {
823 Name
": Cannot read anchor remainder on %s: %s\n",
824 devname
, strerror(errno
));
828 sectors
= mpb_sectors(&anchor
) - 1;
830 return load_imsm_disk(fd
, super
, devname
, 0);
832 /* read the extended mpb */
833 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0) {
836 Name
": Cannot seek to extended mpb on %s: %s\n",
837 devname
, strerror(errno
));
841 len
= mpb_size
- 512;
842 if (read(fd
, super
->buf
+ 512, len
) != len
) {
845 Name
": Cannot read extended mpb on %s: %s\n",
846 devname
, strerror(errno
));
850 check_sum
= gen_imsm_checksum(super
->mpb
);
851 if (check_sum
!= __le32_to_cpu(super
->mpb
->check_sum
)) {
854 Name
": IMSM checksum %x != %x on %s\n",
855 check_sum
, __le32_to_cpu(super
->mpb
->check_sum
),
860 return load_imsm_disk(fd
, super
, devname
, 0);
863 struct superswitch super_imsm_container
;
865 static void free_imsm_disks(struct intel_super
*super
)
867 while (super
->disks
) {
868 struct dl
*d
= super
->disks
;
870 super
->disks
= d
->next
;
879 static void free_imsm(struct intel_super
*super
)
883 free_imsm_disks(super
);
888 static void free_super_imsm(struct supertype
*st
)
890 struct intel_super
*super
= st
->sb
;
899 static struct intel_super
*alloc_super(int creating_imsm
)
901 struct intel_super
*super
= malloc(sizeof(*super
));
904 memset(super
, 0, sizeof(*super
));
905 super
->creating_imsm
= creating_imsm
;
906 super
->creating_dev
= -1;
913 static int load_super_imsm_all(struct supertype
*st
, int fd
, void **sbp
,
914 char *devname
, int keep_fd
)
917 struct intel_super
*super
;
918 struct mdinfo
*sd
, *best
= NULL
;
925 /* check if this disk is a member of an active array */
926 sra
= sysfs_read(fd
, 0, GET_LEVEL
|GET_VERSION
|GET_DEVS
|GET_STATE
);
930 if (sra
->array
.major_version
!= -1 ||
931 sra
->array
.minor_version
!= -2 ||
932 strcmp(sra
->text_version
, "imsm") != 0)
935 super
= alloc_super(0);
939 /* find the most up to date disk in this array */
940 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
941 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
942 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
947 rv
= load_imsm_mpb(dfd
, super
, NULL
);
951 gen
= __le32_to_cpu(super
->mpb
->generation_num
);
952 if (!best
|| gen
> bestgen
) {
967 /* load the most up to date anchor */
968 sprintf(nm
, "%d:%d", best
->disk
.major
, best
->disk
.minor
);
969 dfd
= dev_open(nm
, O_RDONLY
);
974 rv
= load_imsm_mpb(dfd
, super
, NULL
);
981 /* reset the disk list */
982 free_imsm_disks(super
);
984 /* populate disk list */
985 for (sd
= sra
->devs
; sd
; sd
= sd
->next
) {
986 sprintf(nm
, "%d:%d", sd
->disk
.major
, sd
->disk
.minor
);
987 dfd
= dev_open(nm
, keep_fd
? O_RDWR
: O_RDONLY
);
992 load_imsm_disk(dfd
, super
, NULL
, keep_fd
);
998 if (st
->ss
== NULL
) {
999 st
->ss
= &super_imsm_container
;
1000 st
->minor_version
= 0;
1001 st
->max_devs
= IMSM_MAX_DEVICES
;
1002 st
->container_dev
= fd2devnum(fd
);
1009 static int load_super_imsm(struct supertype
*st
, int fd
, char *devname
)
1011 struct intel_super
*super
;
1015 if (load_super_imsm_all(st
, fd
, &st
->sb
, devname
, 1) == 0)
1019 super
= alloc_super(0);
1022 Name
": malloc of %zu failed.\n",
1027 rv
= load_imsm_mpb(fd
, super
, devname
);
1032 Name
": Failed to load all information "
1033 "sections on %s\n", devname
);
1039 if (st
->ss
== NULL
) {
1040 st
->ss
= &super_imsm
;
1041 st
->minor_version
= 0;
1042 st
->max_devs
= IMSM_MAX_DEVICES
;
1048 static int init_zero_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
1049 unsigned long long size
, char *name
,
1050 char *homehost
, int *uuid
)
1052 printf("%s\n", __FUNCTION__
);
1057 static int init_super_imsm(struct supertype
*st
, mdu_array_info_t
*info
,
1058 unsigned long long size
, char *name
,
1059 char *homehost
, int *uuid
)
1061 /* This is primarily called by Create when creating a new array.
1062 * We will then get add_to_super called for each component, and then
1063 * write_init_super called to write it out to each device.
1064 * For IMSM, Create can create on fresh devices or on a pre-existing
1066 * To create on a pre-existing array a different method will be called.
1067 * This one is just for fresh drives.
1069 struct intel_super
*super
;
1070 struct imsm_super
*mpb
;
1073 super
= alloc_super(1);
1076 mpb_size
= disks_to_mpb_size(info
->nr_disks
);
1077 mpb
= malloc(mpb_size
);
1082 memset(mpb
, 0, mpb_size
);
1084 memcpy(mpb
->sig
, MPB_SIGNATURE
, strlen(MPB_SIGNATURE
));
1085 memcpy(mpb
->sig
+ strlen(MPB_SIGNATURE
), MPB_VERSION_RAID5
,
1086 strlen(MPB_VERSION_RAID5
));
1087 mpb
->mpb_size
= mpb_size
;
1094 static int init_super_imsm_volume(struct supertype
*st
, mdu_array_info_t
*info
,
1095 unsigned long long size
, char *name
,
1096 char *homehost
, int *uuid
)
1098 /* We are creating a volume inside a pre-existing container.
1099 * so st->sb is already set.
1101 struct intel_super
*super
= st
->sb
;
1102 struct imsm_super
*mpb
= super
->mpb
;
1103 struct imsm_dev
*dev
;
1104 struct imsm_vol
*vol
;
1105 struct imsm_map
*map
;
1106 int idx
= mpb
->num_raid_devs
;
1108 unsigned long long array_blocks
;
1109 unsigned long long sz
;
1112 if (mpb
->num_raid_devs
>= 2) {
1113 fprintf(stderr
, Name
": This imsm-container already has the "
1114 "maximum of 2 volumes\n");
1118 super
->creating_dev
= idx
;
1119 mpb
->num_raid_devs
++;
1120 dev
= get_imsm_dev(mpb
, idx
);
1121 strncpy((char *) dev
->volume
, name
, MAX_RAID_SERIAL_LEN
);
1122 array_blocks
= calc_array_size(info
->level
, info
->raid_disks
,
1123 info
->layout
, info
->chunk_size
,
1125 dev
->size_low
= __cpu_to_le32((__u32
) array_blocks
);
1126 dev
->size_high
= __cpu_to_le32((__u32
) (array_blocks
>> 32));
1127 dev
->status
= __cpu_to_le32(0);
1128 dev
->reserved_blocks
= __cpu_to_le32(0);
1130 vol
->migr_state
= 0;
1133 for (i
= 0; i
< idx
; i
++) {
1134 struct imsm_dev
*prev
= get_imsm_dev(mpb
, i
);
1135 struct imsm_map
*pmap
= &prev
->vol
.map
[0];
1137 offset
+= __le32_to_cpu(pmap
->blocks_per_member
);
1138 offset
+= IMSM_RESERVED_SECTORS
;
1141 map
->pba_of_lba0
= __cpu_to_le32(offset
);
1142 sz
= info
->size
* 2;
1143 map
->blocks_per_member
= __cpu_to_le32(sz
);
1144 map
->blocks_per_strip
= __cpu_to_le16(info
->chunk_size
>> 9);
1145 map
->num_data_stripes
= __cpu_to_le32(sz
/ (info
->chunk_size
>> 9));
1146 map
->map_state
= info
->level
? IMSM_T_STATE_UNINITIALIZED
:
1147 IMSM_T_STATE_NORMAL
;
1148 if (info
->level
== 10)
1149 map
->raid_level
= 1;
1151 map
->raid_level
= info
->level
;
1152 map
->num_members
= info
->raid_disks
;
1153 for (i
= 0; i
< map
->num_members
; i
++) {
1154 /* initialized in add_to_super */
1155 map
->disk_ord_tbl
[i
] = __cpu_to_le32(0);
1161 static void add_to_super_imsm(struct supertype
*st
, mdu_disk_info_t
*dk
,
1162 int fd
, char *devname
)
1164 struct intel_super
*super
= st
->sb
;
1165 struct imsm_super
*mpb
= super
->mpb
;
1166 struct imsm_disk
*disk
;
1168 unsigned long long size
;
1174 dd
= malloc(sizeof(*dd
));
1177 Name
": malloc failed %s:%d.\n", __func__
, __LINE__
);
1180 memset(dd
, 0, sizeof(*dd
));
1181 dd
->major
= major(stb
.st_rdev
);
1182 dd
->minor
= minor(stb
.st_rdev
);
1183 dd
->index
= dk
->number
;
1184 dd
->devname
= devname
? strdup(devname
) : NULL
;
1185 dd
->next
= super
->disks
;
1187 rv
= imsm_read_serial(fd
, devname
, dd
->serial
);
1190 Name
": failed to retrieve scsi serial "
1191 "using \'%s\' instead\n", devname
);
1192 strcpy((char *) dd
->serial
, devname
);
1195 if (mpb
->num_disks
<= dk
->number
)
1196 mpb
->num_disks
= dk
->number
+ 1;
1198 disk
= get_imsm_disk(mpb
, dk
->number
);
1199 get_dev_size(fd
, NULL
, &size
);
1201 status
= USABLE_DISK
| SPARE_DISK
;
1202 strcpy((char *) disk
->serial
, (char *) dd
->serial
);
1203 disk
->total_blocks
= __cpu_to_le32(size
);
1204 disk
->status
= __cpu_to_le32(status
);
1205 if (sysfs_disk_to_scsi_id(fd
, &id
) == 0)
1206 disk
->scsi_id
= __cpu_to_le32(id
);
1208 disk
->scsi_id
= __cpu_to_le32(0);
1210 /* update the family number if we are creating a container */
1211 if (super
->creating_imsm
)
1212 mpb
->family_num
= __cpu_to_le32(gen_imsm_checksum(mpb
));
1217 static void add_to_super_imsm_volume(struct supertype
*st
, mdu_disk_info_t
*dk
,
1218 int fd
, char *devname
)
1220 struct intel_super
*super
= st
->sb
;
1221 struct imsm_super
*mpb
= super
->mpb
;
1223 struct imsm_dev
*dev
;
1224 struct imsm_map
*map
;
1225 struct imsm_disk
*disk
;
1228 if (super
->creating_dev
== -1) {
1229 fprintf(stderr
, Name
": no active raid device\n");
1233 dev
= get_imsm_dev(mpb
, super
->creating_dev
);
1234 map
= &dev
->vol
.map
[0];
1236 for (dl
= super
->disks
; dl
; dl
= dl
->next
)
1237 if (dl
->major
== dk
->major
&&
1238 dl
->minor
== dk
->minor
)
1240 if (!dl
|| ! (dk
->state
& (1<<MD_DISK_SYNC
)))
1243 map
->disk_ord_tbl
[dk
->number
] = __cpu_to_le32(dl
->index
);
1245 disk
= get_imsm_disk(mpb
, dl
->index
);
1246 status
= CONFIGURED_DISK
| USABLE_DISK
;
1247 disk
->status
= __cpu_to_le32(status
);
1250 static int store_imsm_mpb(int fd
, struct intel_super
*super
);
1252 static int write_super_imsm(struct intel_super
*super
, int doclose
)
1254 struct imsm_super
*mpb
= super
->mpb
;
1259 /* 'generation' is incremented everytime the metadata is written */
1260 generation
= __le32_to_cpu(mpb
->generation_num
);
1262 mpb
->generation_num
= __cpu_to_le32(generation
);
1264 /* recalculate checksum */
1265 sum
= gen_imsm_checksum(mpb
);
1266 mpb
->check_sum
= __cpu_to_le32(sum
);
1268 for (d
= super
->disks
; d
; d
= d
->next
) {
1269 if (store_imsm_mpb(d
->fd
, super
)) {
1270 fprintf(stderr
, "%s: failed for device %d:%d %s\n",
1271 __func__
, d
->major
, d
->minor
, strerror(errno
));
1283 static int write_init_super_imsm(struct supertype
*st
)
1285 return write_super_imsm(st
->sb
, 1);
1288 static int store_zero_imsm(struct supertype
*st
, int fd
)
1290 printf("%s\n", __FUNCTION__
);
1295 static void getinfo_super_n_imsm_container(struct supertype
*st
, struct mdinfo
*info
)
1297 /* just need offset and size...
1300 struct intel_super
*super
= st
->sb
;
1301 struct imsm_super
*mpb
= super
->mpb
;
1302 struct imsm_disk
*disk
= get_imsm_disk(mpb
, info
->disk
.number
);
1304 info
->data_offset
= __le32_to_cpu(disk
->total_blocks
) -
1305 (MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
);
1306 info
->component_size
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1309 static void getinfo_super_n_imsm_volume(struct supertype
*st
, struct mdinfo
*info
)
1311 /* Find the particular details for info->disk.raid_disk.
1312 * This includes data_offset, component_size,
1314 struct intel_super
*super
= st
->sb
;
1315 struct imsm_super
*mpb
= super
->mpb
;
1316 struct imsm_dev
*dev
= get_imsm_dev(mpb
, super
->creating_dev
);
1317 struct imsm_map
*map
= &dev
->vol
.map
[0];
1319 info
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
1320 info
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
1323 static int validate_geometry_imsm(struct supertype
*st
, int level
, int layout
,
1324 int raiddisks
, int chunk
, unsigned long long size
,
1325 char *dev
, unsigned long long *freesize
)
1330 /* if given unused devices create a container
1331 * if given given devices in a container create a member volume
1333 if (level
== LEVEL_CONTAINER
) {
1334 st
->ss
= &super_imsm_container
;
1336 /* validate the container, dev == NULL */
1337 int rv
= st
->ss
->validate_geometry(st
, level
, layout
,
1344 return st
->ss
->validate_geometry(st
, level
, layout
, raiddisks
,
1345 chunk
, size
, dev
, freesize
);
1349 /* creating in a given container */
1350 st
->ss
= &super_imsm_volume
;
1352 int rv
= st
->ss
->validate_geometry(st
, level
, layout
,
1359 return st
->ss
->validate_geometry(st
, level
, layout
, raiddisks
,
1360 chunk
, size
, dev
, freesize
);
1363 /* limit creation to the following levels */
1375 /* This device needs to be a device in an 'imsm' container */
1376 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
1379 Name
": Cannot create this array on device %s\n",
1384 if (errno
!= EBUSY
|| (fd
= open(dev
, O_RDONLY
, 0)) < 0) {
1385 fprintf(stderr
, Name
": Cannot open %s: %s\n",
1386 dev
, strerror(errno
));
1389 /* Well, it is in use by someone, maybe an 'imsm' container. */
1390 cfd
= open_container(fd
);
1393 fprintf(stderr
, Name
": Cannot use %s: It is busy\n",
1397 sra
= sysfs_read(cfd
, 0, GET_VERSION
);
1399 if (sra
&& sra
->array
.major_version
== -1 &&
1400 strcmp(sra
->text_version
, "imsm") == 0) {
1401 /* This is a member of a imsm container. Load the container
1402 * and try to create a volume
1404 struct intel_super
*super
;
1405 st
->ss
= &super_imsm_volume
;
1406 if (load_super_imsm_all(st
, cfd
, (void **) &super
, NULL
, 1) == 0) {
1408 st
->container_dev
= fd2devnum(cfd
);
1410 return st
->ss
->validate_geometry(st
, level
, layout
,
1411 raiddisks
, chunk
, size
,
1415 } else /* may belong to another container */
1421 static int validate_geometry_imsm_container(struct supertype
*st
, int level
,
1422 int layout
, int raiddisks
, int chunk
,
1423 unsigned long long size
, char *dev
,
1424 unsigned long long *freesize
)
1427 unsigned long long ldsize
;
1429 if (level
!= LEVEL_CONTAINER
)
1434 fd
= open(dev
, O_RDONLY
|O_EXCL
, 0);
1436 fprintf(stderr
, Name
": Cannot open %s: %s\n",
1437 dev
, strerror(errno
));
1440 if (!get_dev_size(fd
, dev
, &ldsize
)) {
1446 *freesize
= avail_size_imsm(st
, ldsize
>> 9);
1451 /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
1452 * FIX ME add ahci details
1454 static int validate_geometry_imsm_volume(struct supertype
*st
, int level
,
1455 int layout
, int raiddisks
, int chunk
,
1456 unsigned long long size
, char *dev
,
1457 unsigned long long *freesize
)
1460 struct intel_super
*super
= st
->sb
;
1462 unsigned long long pos
= 0;
1463 unsigned long long maxsize
;
1467 if (level
== LEVEL_CONTAINER
)
1470 if (level
== 1 && raiddisks
> 2) {
1471 fprintf(stderr
, Name
": imsm does not support more than 2 "
1472 "in a raid1 configuration\n");
1476 /* We must have the container info already read in. */
1481 /* General test: make sure there is space for
1482 * 'raiddisks' device extents of size 'size'.
1484 unsigned long long minsize
= size
*2 /* convert to blocks */;
1487 minsize
= MPB_SECTOR_CNT
+ IMSM_RESERVED_SECTORS
;
1488 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
1492 e
= get_extents(super
, dl
);
1495 unsigned long long esize
;
1496 esize
= e
[i
].start
- pos
;
1497 if (esize
>= minsize
)
1499 pos
= e
[i
].start
+ e
[i
].size
;
1501 } while (e
[i
-1].size
);
1506 if (dcnt
< raiddisks
) {
1507 fprintf(stderr
, Name
": Not enough devices with space "
1508 "for this array (%d < %d)\n",
1514 /* This device must be a member of the set */
1515 if (stat(dev
, &stb
) < 0)
1517 if ((S_IFMT
& stb
.st_mode
) != S_IFBLK
)
1519 for (dl
= super
->disks
; dl
; dl
= dl
->next
) {
1520 if (dl
->major
== major(stb
.st_rdev
) &&
1521 dl
->minor
== minor(stb
.st_rdev
))
1525 fprintf(stderr
, Name
": %s is not in the same imsm set\n",
1529 e
= get_extents(super
, dl
);
1533 unsigned long long esize
;
1534 esize
= e
[i
].start
- pos
;
1535 if (esize
>= maxsize
)
1537 pos
= e
[i
].start
+ e
[i
].size
;
1539 } while (e
[i
-1].size
);
1540 *freesize
= maxsize
;
1545 static struct mdinfo
*container_content_imsm(struct supertype
*st
)
1547 /* Given a container loaded by load_super_imsm_all,
1548 * extract information about all the arrays into
1551 * For each imsm_dev create an mdinfo, fill it in,
1552 * then look for matching devices in super->disks
1553 * and create appropriate device mdinfo.
1555 struct intel_super
*super
= st
->sb
;
1556 struct imsm_super
*mpb
= super
->mpb
;
1557 struct mdinfo
*rest
= NULL
;
1560 for (i
= 0; i
< mpb
->num_raid_devs
; i
++) {
1561 struct imsm_dev
*dev
= get_imsm_dev(mpb
, i
);
1562 struct imsm_vol
*vol
= &dev
->vol
;
1563 struct imsm_map
*map
= vol
->map
;
1564 struct mdinfo
*this;
1568 this = malloc(sizeof(*this));
1569 memset(this, 0, sizeof(*this));
1573 this->array
.major_version
= 2000;
1574 get_imsm_numerical_version(mpb
, &this->array
.minor_version
,
1575 &this->array
.patch_version
);
1576 this->array
.level
= get_imsm_raid_level(map
);
1577 this->array
.raid_disks
= map
->num_members
;
1578 this->array
.layout
= imsm_level_to_layout(this->array
.level
);
1579 this->array
.md_minor
= -1;
1580 this->array
.ctime
= 0;
1581 this->array
.utime
= 0;
1582 this->array
.chunk_size
= __le16_to_cpu(map
->blocks_per_strip
) << 9;
1583 this->array
.state
= !vol
->dirty
;
1584 this->container_member
= i
;
1585 if (map
->map_state
== IMSM_T_STATE_UNINITIALIZED
|| dev
->vol
.dirty
)
1586 this->resync_start
= 0;
1588 this->resync_start
= ~0ULL;
1590 strncpy(this->name
, (char *) dev
->volume
, MAX_RAID_SERIAL_LEN
);
1591 this->name
[MAX_RAID_SERIAL_LEN
] = 0;
1593 sprintf(this->text_version
, "/%s/%d",
1594 devnum2devname(st
->container_dev
),
1595 this->container_member
);
1597 memset(this->uuid
, 0, sizeof(this->uuid
));
1599 sz
= __le32_to_cpu(dev
->size_high
);
1601 sz
+= __le32_to_cpu(dev
->size_low
);
1602 this->component_size
= sz
;
1603 this->array
.size
= this->component_size
/ 2;
1605 for (slot
= 0 ; slot
< map
->num_members
; slot
++) {
1606 struct imsm_disk
*disk
;
1607 struct mdinfo
*info_d
;
1612 idx
= __le32_to_cpu(map
->disk_ord_tbl
[slot
] & ~(0xff << 24));
1613 for (d
= super
->disks
; d
; d
= d
->next
)
1614 if (d
->index
== idx
)
1618 break; /* shouldn't this be continue ?? */
1620 info_d
= malloc(sizeof(*info_d
));
1622 break; /* ditto ?? */
1623 memset(info_d
, 0, sizeof(*info_d
));
1624 info_d
->next
= this->devs
;
1625 this->devs
= info_d
;
1627 disk
= get_imsm_disk(mpb
, idx
);
1628 s
= __le32_to_cpu(disk
->status
);
1630 info_d
->disk
.number
= d
->index
;
1631 info_d
->disk
.major
= d
->major
;
1632 info_d
->disk
.minor
= d
->minor
;
1633 info_d
->disk
.raid_disk
= slot
;
1634 info_d
->disk
.state
= s
& CONFIGURED_DISK
? (1 << MD_DISK_ACTIVE
) : 0;
1635 info_d
->disk
.state
|= s
& FAILED_DISK
? (1 << MD_DISK_FAULTY
) : 0;
1636 info_d
->disk
.state
|= s
& USABLE_DISK
? (1 << MD_DISK_SYNC
) : 0;
1638 this->array
.working_disks
++;
1640 info_d
->events
= __le32_to_cpu(mpb
->generation_num
);
1641 info_d
->data_offset
= __le32_to_cpu(map
->pba_of_lba0
);
1642 info_d
->component_size
= __le32_to_cpu(map
->blocks_per_member
);
1644 strcpy(info_d
->name
, d
->devname
);
1652 static int imsm_open_new(struct supertype
*c
, struct active_array
*a
,
1655 fprintf(stderr
, "imsm: open_new %s\n", inst
);
1656 a
->info
.container_member
= atoi(inst
);
1660 static void imsm_set_array_state(struct active_array
*a
, int consistent
)
1662 int inst
= a
->info
.container_member
;
1663 struct intel_super
*super
= a
->container
->sb
;
1664 struct imsm_dev
*dev
= get_imsm_dev(super
->mpb
, inst
);
1665 int dirty
= !consistent
|| (a
->resync_start
!= ~0ULL);
1667 if (dev
->vol
.dirty
!= dirty
) {
1668 fprintf(stderr
, "imsm: mark '%s' (%llu)\n",
1669 dirty
?"dirty":"clean", a
->resync_start
);
1671 dev
->vol
.dirty
= dirty
;
1672 super
->updates_pending
++;
1676 static __u8
imsm_check_degraded(struct imsm_super
*mpb
, int n
, int failed
)
1678 struct imsm_dev
*dev
= get_imsm_dev(mpb
, n
);
1679 struct imsm_map
*map
= dev
->vol
.map
;
1682 return map
->map_state
;
1684 switch (get_imsm_raid_level(map
)) {
1686 return IMSM_T_STATE_FAILED
;
1689 if (failed
< map
->num_members
)
1690 return IMSM_T_STATE_DEGRADED
;
1692 return IMSM_T_STATE_FAILED
;
1697 * check to see if any mirrors have failed,
1698 * otherwise we are degraded
1700 int device_per_mirror
= 2; /* FIXME is this always the case?
1701 * and are they always adjacent?
1706 for (i
= 0; i
< map
->num_members
; i
++) {
1707 int idx
= get_imsm_disk_idx(map
, i
);
1708 struct imsm_disk
*disk
= get_imsm_disk(mpb
, idx
);
1710 if (__le32_to_cpu(disk
->status
) & FAILED_DISK
)
1713 if (failed
>= device_per_mirror
)
1714 return IMSM_T_STATE_FAILED
;
1716 /* reset 'failed' for next mirror set */
1717 if (!((i
+ 1) % device_per_mirror
))
1721 return IMSM_T_STATE_DEGRADED
;
1725 return IMSM_T_STATE_DEGRADED
;
1727 return IMSM_T_STATE_FAILED
;
1733 return map
->map_state
;
1736 static int imsm_count_failed(struct imsm_super
*mpb
, struct imsm_map
*map
)
1740 struct imsm_disk
*disk
;
1742 for (i
= 0; i
< map
->num_members
; i
++) {
1743 int idx
= get_imsm_disk_idx(map
, i
);
1745 disk
= get_imsm_disk(mpb
, idx
);
1746 if (__le32_to_cpu(disk
->status
) & FAILED_DISK
)
1753 static void imsm_set_disk(struct active_array
*a
, int n
, int state
)
1755 int inst
= a
->info
.container_member
;
1756 struct intel_super
*super
= a
->container
->sb
;
1757 struct imsm_dev
*dev
= get_imsm_dev(super
->mpb
, inst
);
1758 struct imsm_map
*map
= dev
->vol
.map
;
1759 struct imsm_disk
*disk
;
1762 int new_failure
= 0;
1764 if (n
> map
->num_members
)
1765 fprintf(stderr
, "imsm: set_disk %d out of range 0..%d\n",
1766 n
, map
->num_members
- 1);
1771 fprintf(stderr
, "imsm: set_disk %d:%x\n", n
, state
);
1773 disk
= get_imsm_disk(super
->mpb
, get_imsm_disk_idx(map
, n
));
1775 /* check if we have seen this failure before */
1776 status
= __le32_to_cpu(disk
->status
);
1777 if ((state
& DS_FAULTY
) && !(status
& FAILED_DISK
)) {
1778 status
|= FAILED_DISK
;
1779 disk
->status
= __cpu_to_le32(status
);
1784 * the number of failures have changed, count up 'failed' to determine
1785 * degraded / failed status
1787 if (new_failure
&& map
->map_state
!= IMSM_T_STATE_FAILED
)
1788 failed
= imsm_count_failed(super
->mpb
, map
);
1791 map
->map_state
= imsm_check_degraded(super
->mpb
, inst
, failed
);
1794 super
->updates_pending
++;
1797 static int store_imsm_mpb(int fd
, struct intel_super
*super
)
1799 struct imsm_super
*mpb
= super
->mpb
;
1800 __u32 mpb_size
= __le32_to_cpu(mpb
->mpb_size
);
1801 unsigned long long dsize
;
1802 unsigned long long sectors
;
1804 get_dev_size(fd
, NULL
, &dsize
);
1806 /* first block is stored on second to last sector of the disk */
1807 if (lseek64(fd
, dsize
- (512 * 2), SEEK_SET
) < 0)
1810 if (write(fd
, super
->buf
, 512) != 512)
1813 if (mpb_size
<= 512)
1816 /* -1 because we already wrote a sector */
1817 sectors
= mpb_sectors(mpb
) - 1;
1819 /* write the extended mpb to the sectors preceeding the anchor */
1820 if (lseek64(fd
, dsize
- (512 * (2 + sectors
)), SEEK_SET
) < 0)
1823 if (write(fd
, super
->buf
+ 512, mpb_size
- 512) != mpb_size
- 512)
1831 static void imsm_sync_metadata(struct supertype
*container
)
1833 struct intel_super
*super
= container
->sb
;
1835 if (!super
->updates_pending
)
1838 write_super_imsm(super
, 0);
1840 super
->updates_pending
= 0;
1843 struct superswitch super_imsm
= {
1845 .examine_super
= examine_super_imsm
,
1846 .brief_examine_super
= brief_examine_super_imsm
,
1847 .detail_super
= detail_super_imsm
,
1848 .brief_detail_super
= brief_detail_super_imsm
,
1850 .match_home
= match_home_imsm
,
1851 .uuid_from_super
= uuid_from_super_imsm
,
1852 .getinfo_super
= getinfo_super_imsm
,
1853 .update_super
= update_super_imsm
,
1855 .avail_size
= avail_size_imsm
,
1857 .compare_super
= compare_super_imsm
,
1859 .load_super
= load_super_imsm
,
1860 .init_super
= init_zero_imsm
,
1861 .store_super
= store_zero_imsm
,
1862 .free_super
= free_super_imsm
,
1863 .match_metadata_desc
= match_metadata_desc_imsm
,
1864 .getinfo_super_n
= getinfo_super_n_imsm_container
,
1866 .validate_geometry
= validate_geometry_imsm
,
1872 .open_new
= imsm_open_new
,
1873 .load_super
= load_super_imsm
,
1874 .set_array_state
= imsm_set_array_state
,
1875 .set_disk
= imsm_set_disk
,
1876 .sync_metadata
= imsm_sync_metadata
,
1879 /* super_imsm_container is set by validate_geometry_imsm when given a
1880 * device that is not part of any array
1882 struct superswitch super_imsm_container
= {
1884 .validate_geometry
= validate_geometry_imsm_container
,
1885 .init_super
= init_super_imsm
,
1886 .add_to_super
= add_to_super_imsm
,
1887 .write_init_super
= write_init_super_imsm
,
1888 .getinfo_super
= getinfo_super_imsm
,
1889 .getinfo_super_n
= getinfo_super_n_imsm_container
,
1890 .load_super
= load_super_imsm
,
1893 .examine_super
= examine_super_imsm
,
1894 .brief_examine_super
= brief_examine_super_imsm
,
1895 .detail_super
= detail_super_imsm
,
1896 .brief_detail_super
= brief_detail_super_imsm
,
1899 .free_super
= free_super_imsm
,
1901 .container_content
= container_content_imsm
,
1908 struct superswitch super_imsm_volume
= {
1909 .update_super
= update_super_imsm
,
1910 .init_super
= init_super_imsm_volume
,
1911 .add_to_super
= add_to_super_imsm_volume
,
1912 .getinfo_super
= getinfo_super_imsm_volume
,
1913 .getinfo_super_n
= getinfo_super_n_imsm_volume
,
1914 .write_init_super
= write_init_super_imsm
,
1916 .load_super
= load_super_imsm
,
1917 .free_super
= free_super_imsm
,
1918 .match_metadata_desc
= match_metadata_desc_imsm_volume
,
1921 .validate_geometry
= validate_geometry_imsm_volume
,