2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2016 Neil Brown <neilb@suse.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Email: <neilb@suse.de>
28 * The version-1 superblock :
29 * All numeric fields are little-endian.
31 * total size: 256 bytes plus 2 per device.
32 * 1K allows 384 devices.
34 struct mdp_superblock_1
{
35 /* constant array information - 128 bytes */
36 __u32 magic
; /* MD_SB_MAGIC: 0xa92b4efc - little endian */
37 __u32 major_version
; /* 1 */
38 __u32 feature_map
; /* 0 for now */
39 __u32 pad0
; /* always set to 0 when writing */
41 __u8 set_uuid
[16]; /* user-space generated. */
42 char set_name
[32]; /* set and interpreted by user-space */
44 __u64 ctime
; /* lo 40 bits are seconds, top 24 are microseconds or 0*/
45 __u32 level
; /* -4 (multipath), -1 (linear), 0,1,4,5 */
46 __u32 layout
; /* only for raid5 currently */
47 __u64 size
; /* used size of component devices, in 512byte sectors */
49 __u32 chunksize
; /* in 512byte sectors */
52 __u32 bitmap_offset
; /* sectors after start of superblock that bitmap starts
53 * NOTE: signed, so bitmap can be before superblock
54 * only meaningful of feature_map[0] is set.
57 /* only meaningful when feature_map[MD_FEATURE_PPL] is set */
59 __s16 offset
; /* sectors from start of superblock that ppl starts */
60 __u16 size
; /* ppl size in sectors */
64 /* These are only valid with feature bit '4' */
65 __u32 new_level
; /* new level we are reshaping to */
66 __u64 reshape_position
; /* next address in array-space for reshape */
67 __u32 delta_disks
; /* change in number of raid_disks */
68 __u32 new_layout
; /* new layout */
69 __u32 new_chunk
; /* new chunk size (sectors) */
70 __u32 new_offset
; /* signed number to add to data_offset in new
71 * layout. 0 == no-change. This can be
72 * different on each device in the array.
75 /* constant this-device information - 64 bytes */
76 __u64 data_offset
; /* sector start of data, often 0 */
77 __u64 data_size
; /* sectors in this device that can be used for data */
78 __u64 super_offset
; /* sector start of this superblock */
80 __u64 recovery_offset
;/* sectors before this offset (from data_offset) have been recovered */
81 __u64 journal_tail
;/* journal tail of journal device (from data_offset) */
83 __u32 dev_number
; /* permanent identifier of this device - not role in raid */
84 __u32 cnt_corrected_read
; /* number of read errors that were corrected by re-writing */
85 __u8 device_uuid
[16]; /* user-space setable, ignored by kernel */
86 __u8 devflags
; /* per-device flags. Only one defined...*/
87 #define WriteMostly1 1 /* mask for writemostly flag in above */
88 #define FailFast1 2 /* Device should get FailFast requests */
89 /* bad block log. If there are any bad blocks the feature flag is set.
90 * if offset and size are non-zero, that space is reserved and available.
92 __u8 bblog_shift
; /* shift from sectors to block size for badblocklist */
93 __u16 bblog_size
; /* number of sectors reserved for badblocklist */
94 __u32 bblog_offset
; /* sector offset from superblock to bblog, signed */
96 /* array state information - 64 bytes */
97 __u64 utime
; /* 40 bits second, 24 btes microseconds */
98 __u64 events
; /* incremented when superblock updated */
99 __u64 resync_offset
; /* data before this offset (from data_offset) known to be in sync */
100 __u32 sb_csum
; /* checksum upto dev_roles[max_dev] */
101 __u32 max_dev
; /* size of dev_roles[] array to consider */
102 __u8 pad3
[64-32]; /* set to 0 when writing */
104 /* device state information. Indexed by dev_number.
106 * Note there are no per-device state flags. State information is rolled
107 * into the 'roles' value. If a device is spare or faulty, then it doesn't
108 * have a meaningful role.
110 __u16 dev_roles
[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */
113 #define MAX_SB_SIZE 4096
114 /* bitmap super size is 256, but we round up to a sector for alignment */
115 #define BM_SUPER_SIZE 512
116 #define MAX_DEVS ((int)(MAX_SB_SIZE - sizeof(struct mdp_superblock_1)) / 2)
117 #define SUPER1_SIZE (MAX_SB_SIZE + BM_SUPER_SIZE \
118 + sizeof(struct misc_dev_info))
120 struct misc_dev_info
{
124 /* feature_map bits */
125 #define MD_FEATURE_BITMAP_OFFSET 1
126 #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and
129 #define MD_FEATURE_RESHAPE_ACTIVE 4
130 #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */
131 #define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an
132 * active device with same 'role'.
133 * 'recovery_offset' is also set.
135 #define MD_FEATURE_RESHAPE_BACKWARDS 32 /* Reshape doesn't change number
136 * of devices, but is going
139 #define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */
140 #define MD_FEATURE_BITMAP_VERSIONED 256 /* bitmap version number checked properly */
141 #define MD_FEATURE_JOURNAL 512 /* support write journal */
142 #define MD_FEATURE_PPL 1024 /* support PPL */
143 #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \
144 |MD_FEATURE_RECOVERY_OFFSET \
145 |MD_FEATURE_RESHAPE_ACTIVE \
146 |MD_FEATURE_BAD_BLOCKS \
147 |MD_FEATURE_REPLACEMENT \
148 |MD_FEATURE_RESHAPE_BACKWARDS \
149 |MD_FEATURE_NEW_OFFSET \
150 |MD_FEATURE_BITMAP_VERSIONED \
151 |MD_FEATURE_JOURNAL \
155 static int role_from_sb(struct mdp_superblock_1
*sb
)
160 d
= __le32_to_cpu(sb
->dev_number
);
161 if (d
< __le32_to_cpu(sb
->max_dev
))
162 role
= __le16_to_cpu(sb
->dev_roles
[d
]);
164 role
= MD_DISK_ROLE_SPARE
;
168 /* return how many bytes are needed for bitmap, for cluster-md each node
169 * should have it's own bitmap */
170 static unsigned int calc_bitmap_size(bitmap_super_t
*bms
, unsigned int boundary
)
172 unsigned long long bits
, bytes
;
174 bits
= bitmap_bits(__le64_to_cpu(bms
->sync_size
),
175 __le32_to_cpu(bms
->chunksize
));
176 bytes
= (bits
+7) >> 3;
177 bytes
+= sizeof(bitmap_super_t
);
178 bytes
= ROUND_UP(bytes
, boundary
);
183 static unsigned int calc_sb_1_csum(struct mdp_superblock_1
* sb
)
185 unsigned int disk_csum
, csum
;
186 unsigned long long newcsum
;
187 int size
= sizeof(*sb
) + __le32_to_cpu(sb
->max_dev
)*2;
188 unsigned int *isuper
= (unsigned int*)sb
;
190 /* make sure I can count... */
191 if (offsetof(struct mdp_superblock_1
,data_offset
) != 128 ||
192 offsetof(struct mdp_superblock_1
, utime
) != 192 ||
193 sizeof(struct mdp_superblock_1
) != 256) {
194 fprintf(stderr
, "WARNING - superblock isn't sized correctly\n");
197 disk_csum
= sb
->sb_csum
;
200 for (; size
>=4; size
-= 4 ) {
201 newcsum
+= __le32_to_cpu(*isuper
);
206 newcsum
+= __le16_to_cpu(*(unsigned short*) isuper
);
208 csum
= (newcsum
& 0xffffffff) + (newcsum
>> 32);
209 sb
->sb_csum
= disk_csum
;
210 return __cpu_to_le32(csum
);
214 * Information related to file descriptor used for aligned reads/writes.
215 * Cache the block size.
222 static void init_afd(struct align_fd
*afd
, int fd
)
225 if (!get_dev_sector_size(afd
->fd
, NULL
, (unsigned int *)&afd
->blk_sz
))
229 static char abuf
[4096+4096];
230 static int aread(struct align_fd
*afd
, void *buf
, int len
)
233 * On devices with a 4K sector size, we need to read
234 * the full sector and copy relevant bits into
243 if (!bsize
|| bsize
> 4096 || len
> 4096) {
245 fprintf(stderr
, "WARNING - aread() called with invalid block size\n");
248 b
= ROUND_UP_PTR((char *)abuf
, 4096);
250 for (iosize
= 0; iosize
< len
; iosize
+= bsize
)
252 n
= read(afd
->fd
, b
, iosize
);
255 lseek(afd
->fd
, len
- n
, 1);
262 static int awrite(struct align_fd
*afd
, void *buf
, int len
)
265 * On devices with a 4K sector size, we need to write
266 * the full sector. We pre-read if the sector is larger
268 * The address must be sector-aligned.
275 if (!bsize
|| bsize
> 4096 || len
> 4096) {
277 fprintf(stderr
, "WARNING - awrite() called with invalid block size\n");
280 b
= ROUND_UP_PTR((char *)abuf
, 4096);
282 for (iosize
= 0; iosize
< len
; iosize
+= bsize
)
286 n
= read(afd
->fd
, b
, iosize
);
289 lseek(afd
->fd
, -n
, 1);
293 n
= write(afd
->fd
, b
, iosize
);
296 lseek(afd
->fd
, len
- n
, 1);
300 static inline unsigned int choose_ppl_space(int chunk
)
302 return (PPL_HEADER_SIZE
>> 9) + (chunk
> 128*2 ? chunk
: 128*2);
305 static void examine_super1(struct supertype
*st
, char *homehost
)
307 struct mdp_superblock_1
*sb
= st
->sb
;
308 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
)+MAX_SB_SIZE
);
315 int l
= homehost
? strlen(homehost
) : 0;
317 unsigned long long sb_offset
;
320 printf(" Magic : %08x\n", __le32_to_cpu(sb
->magic
));
321 printf(" Version : 1");
322 sb_offset
= __le64_to_cpu(sb
->super_offset
);
325 else if (sb_offset
<= 8)
329 printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb
->feature_map
));
330 printf(" Array UUID : ");
331 for (i
=0; i
<16; i
++) {
332 if ((i
&3)==0 && i
!= 0) printf(":");
333 printf("%02x", sb
->set_uuid
[i
]);
336 printf(" Name : %.32s", sb
->set_name
);
337 if (l
> 0 && l
< 32 &&
338 sb
->set_name
[l
] == ':' &&
339 strncmp(sb
->set_name
, homehost
, l
) == 0)
340 printf(" (local to host %s)", homehost
);
342 if (bms
->nodes
> 0 && (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
343 printf(" Cluster Name : %-64s\n", bms
->cluster_name
);
344 atime
= __le64_to_cpu(sb
->ctime
) & 0xFFFFFFFFFFULL
;
345 printf(" Creation Time : %.24s\n", ctime(&atime
));
346 c
=map_num(pers
, __le32_to_cpu(sb
->level
));
347 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
348 printf(" Raid Devices : %d\n", __le32_to_cpu(sb
->raid_disks
));
350 printf(" Avail Dev Size : %llu%s\n",
351 (unsigned long long)__le64_to_cpu(sb
->data_size
),
352 human_size(__le64_to_cpu(sb
->data_size
)<<9));
353 if (__le32_to_cpu(sb
->level
) > 0) {
354 int ddsks
= 0, ddsks_denom
= 1;
355 switch(__le32_to_cpu(sb
->level
)) {
356 case 1: ddsks
=1;break;
358 case 5: ddsks
= __le32_to_cpu(sb
->raid_disks
)-1; break;
359 case 6: ddsks
= __le32_to_cpu(sb
->raid_disks
)-2; break;
361 layout
= __le32_to_cpu(sb
->layout
);
362 ddsks
= __le32_to_cpu(sb
->raid_disks
);
363 ddsks_denom
= (layout
&255) * ((layout
>>8)&255);
366 long long asize
= __le64_to_cpu(sb
->size
);
367 asize
= (asize
<< 9) * ddsks
/ ddsks_denom
;
368 printf(" Array Size : %llu%s\n",
369 asize
>> 10, human_size(asize
));
371 if (sb
->size
!= sb
->data_size
)
372 printf(" Used Dev Size : %llu%s\n",
373 (unsigned long long)__le64_to_cpu(sb
->size
),
374 human_size(__le64_to_cpu(sb
->size
)<<9));
377 printf(" Data Offset : %llu sectors\n",
378 (unsigned long long)__le64_to_cpu(sb
->data_offset
));
379 if (sb
->new_offset
&&
380 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_NEW_OFFSET
)) {
381 unsigned long long offset
= __le64_to_cpu(sb
->data_offset
);
382 offset
+= (signed)(int32_t)__le32_to_cpu(sb
->new_offset
);
383 printf(" New Offset : %llu sectors\n", offset
);
385 printf(" Super Offset : %llu sectors\n",
386 (unsigned long long)__le64_to_cpu(sb
->super_offset
));
387 if (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_RECOVERY_OFFSET
)
388 printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb
->recovery_offset
));
390 st
->ss
->getinfo_super(st
, &info
, NULL
);
391 if (info
.space_after
!= 1 &&
392 !(__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_NEW_OFFSET
))
393 printf(" Unused Space : before=%llu sectors, after=%llu sectors\n",
394 info
.space_before
, info
.space_after
);
396 printf(" State : %s\n", (__le64_to_cpu(sb
->resync_offset
)+1)? "active":"clean");
397 printf(" Device UUID : ");
398 for (i
=0; i
<16; i
++) {
399 if ((i
&3)==0 && i
!= 0) printf(":");
400 printf("%02x", sb
->device_uuid
[i
]);
404 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
405 printf("Internal Bitmap : %ld sectors from superblock\n",
406 (long)(int32_t)__le32_to_cpu(sb
->bitmap_offset
));
407 } else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_PPL
)) {
408 printf(" PPL : %u sectors at offset %d sectors from superblock\n",
409 __le16_to_cpu(sb
->ppl
.size
),
410 __le16_to_cpu(sb
->ppl
.offset
));
412 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
)) {
413 printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb
->reshape_position
)/2,
414 human_size(__le64_to_cpu(sb
->reshape_position
)<<9));
415 if (__le32_to_cpu(sb
->delta_disks
)) {
416 printf(" Delta Devices : %d", __le32_to_cpu(sb
->delta_disks
));
417 printf(" (%d->%d)\n",
418 __le32_to_cpu(sb
->raid_disks
)-__le32_to_cpu(sb
->delta_disks
),
419 __le32_to_cpu(sb
->raid_disks
));
420 if ((int)__le32_to_cpu(sb
->delta_disks
) < 0)
421 delta_extra
= -__le32_to_cpu(sb
->delta_disks
);
423 if (__le32_to_cpu(sb
->new_level
) != __le32_to_cpu(sb
->level
)) {
424 c
= map_num(pers
, __le32_to_cpu(sb
->new_level
));
425 printf(" New Level : %s\n", c
?c
:"-unknown-");
427 if (__le32_to_cpu(sb
->new_layout
) != __le32_to_cpu(sb
->layout
)) {
428 if (__le32_to_cpu(sb
->level
) == 5) {
429 c
= map_num(r5layout
, __le32_to_cpu(sb
->new_layout
));
430 printf(" New Layout : %s\n", c
?c
:"-unknown-");
432 if (__le32_to_cpu(sb
->level
) == 6) {
433 c
= map_num(r6layout
, __le32_to_cpu(sb
->new_layout
));
434 printf(" New Layout : %s\n", c
?c
:"-unknown-");
436 if (__le32_to_cpu(sb
->level
) == 10) {
437 printf(" New Layout :");
438 print_r10_layout(__le32_to_cpu(sb
->new_layout
));
442 if (__le32_to_cpu(sb
->new_chunk
) != __le32_to_cpu(sb
->chunksize
))
443 printf(" New Chunksize : %dK\n", __le32_to_cpu(sb
->new_chunk
)/2);
448 if (sb
->devflags
& WriteMostly1
)
449 printf(" write-mostly");
450 if (sb
->devflags
& FailFast1
)
455 atime
= __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
;
456 printf(" Update Time : %.24s\n", ctime(&atime
));
458 if (sb
->bblog_size
&& sb
->bblog_offset
) {
459 printf(" Bad Block Log : %d entries available at offset %ld sectors",
460 __le16_to_cpu(sb
->bblog_size
)*512/8,
461 (long)(int32_t)__le32_to_cpu(sb
->bblog_offset
));
462 if (sb
->feature_map
&
463 __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
464 printf(" - bad blocks present.");
468 if (calc_sb_1_csum(sb
) == sb
->sb_csum
)
469 printf(" Checksum : %x - correct\n", __le32_to_cpu(sb
->sb_csum
));
471 printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb
->sb_csum
),
472 __le32_to_cpu(calc_sb_1_csum(sb
)));
473 printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb
->events
));
475 if (__le32_to_cpu(sb
->level
) == 5) {
476 c
= map_num(r5layout
, __le32_to_cpu(sb
->layout
));
477 printf(" Layout : %s\n", c
?c
:"-unknown-");
479 if (__le32_to_cpu(sb
->level
) == 6) {
480 c
= map_num(r6layout
, __le32_to_cpu(sb
->layout
));
481 printf(" Layout : %s\n", c
?c
:"-unknown-");
483 if (__le32_to_cpu(sb
->level
) == 10) {
484 int lo
= __le32_to_cpu(sb
->layout
);
486 print_r10_layout(lo
);
489 switch(__le32_to_cpu(sb
->level
)) {
495 printf(" Chunk Size : %dK\n", __le32_to_cpu(sb
->chunksize
)/2);
498 printf(" Rounding : %dK\n", __le32_to_cpu(sb
->chunksize
)/2);
504 /* This turns out to just be confusing */
505 printf(" Array Slot : %d (", __le32_to_cpu(sb
->dev_number
));
506 for (i
= __le32_to_cpu(sb
->max_dev
); i
> 0 ; i
--)
507 if (__le16_to_cpu(sb
->dev_roles
[i
-1]) != MD_DISK_ROLE_SPARE
)
509 for (d
=0; d
< i
; d
++) {
510 int role
= __le16_to_cpu(sb
->dev_roles
[d
]);
512 if (role
== MD_DISK_ROLE_SPARE
) printf("empty");
513 else if(role
== MD_DISK_ROLE_FAULTY
) printf("failed");
514 else printf("%d", role
);
518 printf(" Device Role : ");
519 role
= role_from_sb(sb
);
520 if (role
>= MD_DISK_ROLE_FAULTY
)
522 else if (role
== MD_DISK_ROLE_JOURNAL
)
524 else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_REPLACEMENT
))
525 printf("Replacement device %d\n", role
);
527 printf("Active device %d\n", role
);
529 printf(" Array State : ");
530 for (d
=0; d
<__le32_to_cpu(sb
->raid_disks
) + delta_extra
; d
++) {
533 for (i
=0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
534 unsigned int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
548 /* This is confusing too */
550 for (i
=0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
551 int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
552 if (role
== MD_DISK_ROLE_FAULTY
)
555 if (faulty
) printf(" %d failed", faulty
);
557 printf(" ('A' == active, '.' == missing, 'R' == replacing)");
561 static void brief_examine_super1(struct supertype
*st
, int verbose
)
563 struct mdp_superblock_1
*sb
= st
->sb
;
565 unsigned long long sb_offset
;
567 char *c
=map_num(pers
, __le32_to_cpu(sb
->level
));
569 nm
= strchr(sb
->set_name
, ':');
572 else if (sb
->set_name
[0])
584 printf(" level=%s", c
);
585 sb_offset
= __le64_to_cpu(sb
->super_offset
);
587 printf(" metadata=1.1 ");
588 else if (sb_offset
<= 8)
589 printf(" metadata=1.2 ");
591 printf(" metadata=1.0 ");
593 printf("num-devices=%d ", __le32_to_cpu(sb
->raid_disks
));
595 for (i
=0; i
<16; i
++) {
596 if ((i
&3)==0 && i
!= 0) printf(":");
597 printf("%02x", sb
->set_uuid
[i
]);
599 if (sb
->set_name
[0]) {
601 print_quoted(sb
->set_name
);
606 static void export_examine_super1(struct supertype
*st
)
608 struct mdp_superblock_1
*sb
= st
->sb
;
613 printf("MD_LEVEL=%s\n", map_num(pers
, __le32_to_cpu(sb
->level
)));
614 printf("MD_DEVICES=%d\n", __le32_to_cpu(sb
->raid_disks
));
616 if (sb
->set_name
[i
] == '\n' ||
617 sb
->set_name
[i
] == '\0') {
622 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
623 if (__le32_to_cpu(sb
->level
) > 0) {
624 int ddsks
= 0, ddsks_denom
= 1;
625 switch(__le32_to_cpu(sb
->level
)) {
626 case 1: ddsks
=1;break;
628 case 5: ddsks
= __le32_to_cpu(sb
->raid_disks
)-1; break;
629 case 6: ddsks
= __le32_to_cpu(sb
->raid_disks
)-2; break;
631 layout
= __le32_to_cpu(sb
->layout
);
632 ddsks
= __le32_to_cpu(sb
->raid_disks
);
633 ddsks_denom
= (layout
&255) * ((layout
>>8)&255);
636 long long asize
= __le64_to_cpu(sb
->size
);
637 asize
= (asize
<< 9) * ddsks
/ ddsks_denom
;
638 printf("MD_ARRAY_SIZE=%s\n",human_size_brief(asize
,JEDEC
));
642 for (i
=0; i
<16; i
++) {
643 if ((i
&3)==0 && i
!= 0) printf(":");
644 printf("%02x", sb
->set_uuid
[i
]);
647 printf("MD_UPDATE_TIME=%llu\n",
648 __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
);
649 printf("MD_DEV_UUID=");
650 for (i
=0; i
<16; i
++) {
651 if ((i
&3)==0 && i
!= 0) printf(":");
652 printf("%02x", sb
->device_uuid
[i
]);
655 printf("MD_EVENTS=%llu\n",
656 (unsigned long long)__le64_to_cpu(sb
->events
));
659 static int copy_metadata1(struct supertype
*st
, int from
, int to
)
661 /* Read superblock. If it looks good, write it out.
662 * Then if a bitmap is present, copy that.
663 * And if a bad-block-list is present, copy that too.
666 unsigned long long dsize
, sb_offset
;
667 const int bufsize
= 4*1024;
668 struct mdp_superblock_1 super
, *sb
;
670 if (posix_memalign(&buf
, 4096, bufsize
) != 0)
673 if (!get_dev_size(from
, NULL
, &dsize
))
679 switch(st
->minor_version
) {
683 sb_offset
&= ~(4*2-1);
695 if (lseek64(from
, sb_offset
<< 9, 0) < 0LL)
697 if (read(from
, buf
, bufsize
) != bufsize
)
701 super
= *sb
; // save most of sb for when we reuse buf
703 if (__le32_to_cpu(super
.magic
) != MD_SB_MAGIC
||
704 __le32_to_cpu(super
.major_version
) != 1 ||
705 __le64_to_cpu(super
.super_offset
) != sb_offset
||
706 calc_sb_1_csum(sb
) != super
.sb_csum
)
709 if (lseek64(to
, sb_offset
<< 9, 0) < 0LL)
711 if (write(to
, buf
, bufsize
) != bufsize
)
714 if (super
.feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
715 unsigned long long bitmap_offset
= sb_offset
;
716 int bytes
= 4096; // just an estimate.
718 struct align_fd afrom
, ato
;
720 init_afd(&afrom
, from
);
723 bitmap_offset
+= (int32_t)__le32_to_cpu(super
.bitmap_offset
);
725 if (lseek64(from
, bitmap_offset
<<9, 0) < 0)
727 if (lseek64(to
, bitmap_offset
<<9, 0) < 0)
730 for (written
= 0; written
< bytes
; ) {
731 int n
= bytes
- written
;
734 if (aread(&afrom
, buf
, n
) != n
)
737 /* have the header, can calculate
738 * correct bitmap bytes */
741 bytes
= calc_bitmap_size(bms
, 512);
745 if (awrite(&ato
, buf
, n
) != n
)
751 if (super
.bblog_size
!= 0 &&
752 __le16_to_cpu(super
.bblog_size
) <= 100 &&
753 super
.bblog_offset
!= 0 &&
754 (super
.feature_map
& __le32_to_cpu(MD_FEATURE_BAD_BLOCKS
))) {
755 /* There is a bad block log */
756 unsigned long long bb_offset
= sb_offset
;
757 int bytes
= __le16_to_cpu(super
.bblog_size
) * 512;
759 struct align_fd afrom
, ato
;
761 init_afd(&afrom
, from
);
764 bb_offset
+= (int32_t)__le32_to_cpu(super
.bblog_offset
);
766 if (lseek64(from
, bb_offset
<<9, 0) < 0)
768 if (lseek64(to
, bb_offset
<<9, 0) < 0)
771 for (written
= 0; written
< bytes
; ) {
772 int n
= bytes
- written
;
775 if (aread(&afrom
, buf
, n
) != n
)
778 if (awrite(&ato
, buf
, n
) != n
)
792 static void detail_super1(struct supertype
*st
, char *homehost
)
794 struct mdp_superblock_1
*sb
= st
->sb
;
795 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
797 int l
= homehost
? strlen(homehost
) : 0;
799 printf(" Name : %.32s", sb
->set_name
);
800 if (l
> 0 && l
< 32 &&
801 sb
->set_name
[l
] == ':' &&
802 strncmp(sb
->set_name
, homehost
, l
) == 0)
803 printf(" (local to host %s)", homehost
);
804 if (bms
->nodes
> 0 && (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
805 printf("\n Cluster Name : %-64s", bms
->cluster_name
);
806 printf("\n UUID : ");
807 for (i
=0; i
<16; i
++) {
808 if ((i
&3)==0 && i
!= 0) printf(":");
809 printf("%02x", sb
->set_uuid
[i
]);
811 printf("\n Events : %llu\n\n",
812 (unsigned long long)__le64_to_cpu(sb
->events
));
815 static void brief_detail_super1(struct supertype
*st
)
817 struct mdp_superblock_1
*sb
= st
->sb
;
820 if (sb
->set_name
[0]) {
822 print_quoted(sb
->set_name
);
825 for (i
=0; i
<16; i
++) {
826 if ((i
&3)==0 && i
!= 0) printf(":");
827 printf("%02x", sb
->set_uuid
[i
]);
831 static void export_detail_super1(struct supertype
*st
)
833 struct mdp_superblock_1
*sb
= st
->sb
;
838 if (sb
->set_name
[i
] == '\n' ||
839 sb
->set_name
[i
] == '\0') {
844 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
847 static int examine_badblocks_super1(struct supertype
*st
, int fd
, char *devname
)
849 struct mdp_superblock_1
*sb
= st
->sb
;
850 unsigned long long offset
;
855 if (!sb
->bblog_size
|| __le16_to_cpu(sb
->bblog_size
) > 100
856 || !sb
->bblog_offset
){
857 printf("No bad-blocks list configured on %s\n", devname
);
860 if ((sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
862 printf("Bad-blocks list is empty in %s\n", devname
);
866 size
= __le16_to_cpu(sb
->bblog_size
)* 512;
867 if (posix_memalign((void**)&bbl
, 4096, size
) != 0) {
868 pr_err("could not allocate badblocks list\n");
871 offset
= __le64_to_cpu(sb
->super_offset
) +
872 (int)__le32_to_cpu(sb
->bblog_offset
);
874 if (lseek64(fd
, offset
, 0) < 0) {
875 pr_err("Cannot seek to bad-blocks list\n");
878 if (read(fd
, bbl
, size
) != size
) {
879 pr_err("Cannot read bad-blocks list\n");
882 /* 64bits per entry. 10 bits is block-count, 54 bits is block
883 * offset. Blocks are sectors unless bblog->shift makes them bigger
886 printf("Bad-blocks on %s:\n", devname
);
887 for (i
= 0; i
< size
/8; i
++, bbp
++) {
888 __u64 bb
= __le64_to_cpu(*bbp
);
889 int count
= bb
& 0x3ff;
890 unsigned long long sector
= bb
>> 10;
895 sector
<<= sb
->bblog_shift
;
896 count
<<= sb
->bblog_shift
;
898 printf("%20llu for %d sectors\n", sector
, count
);
903 static int match_home1(struct supertype
*st
, char *homehost
)
905 struct mdp_superblock_1
*sb
= st
->sb
;
906 int l
= homehost
? strlen(homehost
) : 0;
908 return (l
> 0 && l
< 32 &&
909 sb
->set_name
[l
] == ':' &&
910 strncmp(sb
->set_name
, homehost
, l
) == 0);
913 static void uuid_from_super1(struct supertype
*st
, int uuid
[4])
915 struct mdp_superblock_1
*super
= st
->sb
;
916 char *cuuid
= (char*)uuid
;
919 cuuid
[i
] = super
->set_uuid
[i
];
922 static void getinfo_super1(struct supertype
*st
, struct mdinfo
*info
, char *map
)
924 struct mdp_superblock_1
*sb
= st
->sb
;
925 struct bitmap_super_s
*bsb
= (void*)(((char*)sb
)+MAX_SB_SIZE
);
926 struct misc_dev_info
*misc
= (void*)(((char*)sb
)+MAX_SB_SIZE
+BM_SUPER_SIZE
);
930 unsigned int map_disks
= info
->array
.raid_disks
;
931 unsigned long long super_offset
;
932 unsigned long long data_size
;
934 memset(info
, 0, sizeof(*info
));
935 info
->array
.major_version
= 1;
936 info
->array
.minor_version
= st
->minor_version
;
937 info
->array
.patch_version
= 0;
938 info
->array
.raid_disks
= __le32_to_cpu(sb
->raid_disks
);
939 info
->array
.level
= __le32_to_cpu(sb
->level
);
940 info
->array
.layout
= __le32_to_cpu(sb
->layout
);
941 info
->array
.md_minor
= -1;
942 info
->array
.ctime
= __le64_to_cpu(sb
->ctime
);
943 info
->array
.utime
= __le64_to_cpu(sb
->utime
);
944 info
->array
.chunk_size
= __le32_to_cpu(sb
->chunksize
)*512;
946 (__le64_to_cpu(sb
->resync_offset
) == MaxSector
)
948 if (__le32_to_cpu(bsb
->nodes
) > 1)
949 info
->array
.state
|= (1 << MD_SB_CLUSTERED
);
951 super_offset
= __le64_to_cpu(sb
->super_offset
);
952 info
->data_offset
= __le64_to_cpu(sb
->data_offset
);
953 info
->component_size
= __le64_to_cpu(sb
->size
);
954 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
955 info
->bitmap_offset
= (int32_t)__le32_to_cpu(sb
->bitmap_offset
);
956 } else if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_PPL
)) {
957 info
->ppl_offset
= __le16_to_cpu(sb
->ppl
.offset
);
958 info
->ppl_size
= __le16_to_cpu(sb
->ppl
.size
);
959 info
->ppl_sector
= super_offset
+ info
->ppl_offset
;
962 info
->disk
.major
= 0;
963 info
->disk
.minor
= 0;
964 info
->disk
.number
= __le32_to_cpu(sb
->dev_number
);
965 if (__le32_to_cpu(sb
->dev_number
) >= __le32_to_cpu(sb
->max_dev
) ||
966 __le32_to_cpu(sb
->dev_number
) >= MAX_DEVS
)
967 role
= MD_DISK_ROLE_FAULTY
;
969 role
= __le16_to_cpu(sb
->dev_roles
[__le32_to_cpu(sb
->dev_number
)]);
971 if (info
->array
.level
<= 0)
972 data_size
= __le64_to_cpu(sb
->data_size
);
974 data_size
= __le64_to_cpu(sb
->size
);
975 if (info
->data_offset
< super_offset
) {
976 unsigned long long end
;
977 info
->space_before
= info
->data_offset
;
980 if (sb
->bblog_offset
&& sb
->bblog_size
) {
981 unsigned long long bboffset
= super_offset
;
982 bboffset
+= (int32_t)__le32_to_cpu(sb
->bblog_offset
);
987 if (super_offset
+ info
->bitmap_offset
+ info
->ppl_offset
< end
)
988 end
= super_offset
+ info
->bitmap_offset
+ info
->ppl_offset
;
990 if (info
->data_offset
+ data_size
< end
)
991 info
->space_after
= end
- data_size
- info
->data_offset
;
993 info
->space_after
= 0;
995 unsigned long long earliest
;
996 earliest
= super_offset
+ (32+4)*2; /* match kernel */
997 if (info
->bitmap_offset
> 0) {
998 unsigned long long bmend
= info
->bitmap_offset
;
999 unsigned long long size
= calc_bitmap_size(bsb
, 4096);
1002 if (bmend
> earliest
)
1004 } else if (info
->ppl_offset
> 0) {
1005 unsigned long long pplend
= info
->ppl_offset
+
1007 if (pplend
> earliest
)
1010 if (sb
->bblog_offset
&& sb
->bblog_size
) {
1011 unsigned long long bbend
= super_offset
;
1012 bbend
+= (int32_t)__le32_to_cpu(sb
->bblog_offset
);
1013 bbend
+= __le16_to_cpu(sb
->bblog_size
);
1014 if (bbend
> earliest
)
1017 if (earliest
< info
->data_offset
)
1018 info
->space_before
= info
->data_offset
- earliest
;
1020 info
->space_before
= 0;
1021 info
->space_after
= misc
->device_size
- data_size
- info
->data_offset
;
1023 if (info
->space_before
== 0 && info
->space_after
== 0) {
1024 /* It will look like we don't support data_offset changes,
1025 * be we do - it's just that there is no room.
1026 * A change that reduced the number of devices should
1027 * still be allowed, so set the otherwise useless value of '1'
1029 info
->space_after
= 1;
1032 info
->disk
.raid_disk
= -1;
1034 case MD_DISK_ROLE_SPARE
:
1035 info
->disk
.state
= 0; /* spare: not active, not sync, not faulty */
1037 case MD_DISK_ROLE_FAULTY
:
1038 info
->disk
.state
= (1 << MD_DISK_FAULTY
); /* faulty */
1040 case MD_DISK_ROLE_JOURNAL
:
1041 info
->disk
.state
= (1 << MD_DISK_JOURNAL
);
1042 info
->disk
.raid_disk
= role
;
1043 info
->space_after
= (misc
->device_size
- info
->data_offset
) % 8; /* journal uses all 4kB blocks*/
1046 info
->disk
.state
= 6; /* active and in sync */
1047 info
->disk
.raid_disk
= role
;
1049 if (sb
->devflags
& WriteMostly1
)
1050 info
->disk
.state
|= (1 << MD_DISK_WRITEMOSTLY
);
1051 if (sb
->devflags
& FailFast1
)
1052 info
->disk
.state
|= (1 << MD_DISK_FAILFAST
);
1053 info
->events
= __le64_to_cpu(sb
->events
);
1054 sprintf(info
->text_version
, "1.%d", st
->minor_version
);
1055 info
->safe_mode_delay
= 200;
1057 memcpy(info
->uuid
, sb
->set_uuid
, 16);
1059 strncpy(info
->name
, sb
->set_name
, 32);
1062 if ((__le32_to_cpu(sb
->feature_map
)&MD_FEATURE_REPLACEMENT
)) {
1063 info
->disk
.state
&= ~(1 << MD_DISK_SYNC
);
1064 info
->disk
.state
|= 1 << MD_DISK_REPLACEMENT
;
1067 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET
))
1068 info
->recovery_start
= __le32_to_cpu(sb
->recovery_offset
);
1070 info
->recovery_start
= MaxSector
;
1072 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
)) {
1073 info
->reshape_active
= 1;
1074 if ((sb
->feature_map
& __le32_to_cpu(MD_FEATURE_NEW_OFFSET
)) &&
1075 sb
->new_offset
!= 0)
1076 info
->reshape_active
|= RESHAPE_NO_BACKUP
;
1077 info
->reshape_progress
= __le64_to_cpu(sb
->reshape_position
);
1078 info
->new_level
= __le32_to_cpu(sb
->new_level
);
1079 info
->delta_disks
= __le32_to_cpu(sb
->delta_disks
);
1080 info
->new_layout
= __le32_to_cpu(sb
->new_layout
);
1081 info
->new_chunk
= __le32_to_cpu(sb
->new_chunk
)<<9;
1082 if (info
->delta_disks
< 0)
1083 info
->array
.raid_disks
-= info
->delta_disks
;
1085 info
->reshape_active
= 0;
1087 info
->recovery_blocked
= info
->reshape_active
;
1090 for (i
=0; i
<map_disks
; i
++)
1092 for (i
= 0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
1093 role
= __le16_to_cpu(sb
->dev_roles
[i
]);
1094 if (/*role == MD_DISK_ROLE_SPARE || */role
< (unsigned) info
->array
.raid_disks
) {
1096 if (map
&& role
< map_disks
)
1101 info
->array
.working_disks
= working
;
1103 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_JOURNAL
)) {
1104 info
->journal_device_required
= 1;
1105 info
->consistency_policy
= CONSISTENCY_POLICY_JOURNAL
;
1106 } else if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_PPL
)) {
1107 info
->consistency_policy
= CONSISTENCY_POLICY_PPL
;
1108 } else if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
1109 info
->consistency_policy
= CONSISTENCY_POLICY_BITMAP
;
1110 } else if (info
->array
.level
<= 0) {
1111 info
->consistency_policy
= CONSISTENCY_POLICY_NONE
;
1113 info
->consistency_policy
= CONSISTENCY_POLICY_RESYNC
;
1116 info
->journal_clean
= 0;
1119 static struct mdinfo
*container_content1(struct supertype
*st
, char *subarray
)
1121 struct mdinfo
*info
;
1126 info
= xmalloc(sizeof(*info
));
1127 getinfo_super1(st
, info
, NULL
);
1131 static int update_super1(struct supertype
*st
, struct mdinfo
*info
,
1133 char *devname
, int verbose
,
1134 int uuid_set
, char *homehost
)
1136 /* NOTE: for 'assemble' and 'force' we need to return non-zero
1137 * if any change was made. For others, the return value is
1142 struct mdp_superblock_1
*sb
= st
->sb
;
1143 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
1145 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready()) {
1146 rv
= cluster_get_dlmlock(&lockid
);
1148 pr_err("Cannot get dlmlock in %s return %d\n", __func__
, rv
);
1149 cluster_release_dlmlock(lockid
);
1154 if (strcmp(update
, "homehost") == 0 &&
1156 /* Note that 'homehost' is special as it is really
1161 c
= strchr(sb
->set_name
, ':');
1163 strncpy(info
->name
, c
+1, 31 - (c
-sb
->set_name
));
1165 strncpy(info
->name
, sb
->set_name
, 32);
1169 if (strcmp(update
, "force-one")==0) {
1170 /* Not enough devices for a working array,
1171 * so bring this one up-to-date
1173 if (sb
->events
!= __cpu_to_le64(info
->events
))
1175 sb
->events
= __cpu_to_le64(info
->events
);
1176 } else if (strcmp(update
, "force-array")==0) {
1177 /* Degraded array and 'force' requests to
1178 * maybe need to mark it 'clean'.
1180 switch(__le32_to_cpu(sb
->level
)) {
1181 case 5: case 4: case 6:
1182 /* need to force clean */
1183 if (sb
->resync_offset
!= MaxSector
)
1185 sb
->resync_offset
= MaxSector
;
1187 } else if (strcmp(update
, "assemble")==0) {
1188 int d
= info
->disk
.number
;
1190 if (info
->disk
.state
& (1<<MD_DISK_ACTIVE
))
1191 want
= info
->disk
.raid_disk
;
1192 else if (info
->disk
.state
& (1<<MD_DISK_JOURNAL
))
1193 want
= MD_DISK_ROLE_JOURNAL
;
1195 want
= MD_DISK_ROLE_SPARE
;
1196 if (sb
->dev_roles
[d
] != __cpu_to_le16(want
)) {
1197 sb
->dev_roles
[d
] = __cpu_to_le16(want
);
1200 if (info
->reshape_active
&&
1201 sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
) &&
1202 info
->delta_disks
>= 0 &&
1203 info
->reshape_progress
< __le64_to_cpu(sb
->reshape_position
)) {
1204 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
1207 if (info
->reshape_active
&&
1208 sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
) &&
1209 info
->delta_disks
< 0 &&
1210 info
->reshape_progress
> __le64_to_cpu(sb
->reshape_position
)) {
1211 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
1214 } else if (strcmp(update
, "linear-grow-new") == 0) {
1217 unsigned int max
= __le32_to_cpu(sb
->max_dev
);
1219 for (i
=0 ; i
< max
; i
++)
1220 if (__le16_to_cpu(sb
->dev_roles
[i
]) >= MD_DISK_ROLE_FAULTY
)
1222 sb
->dev_number
= __cpu_to_le32(i
);
1223 info
->disk
.number
= i
;
1224 if (max
>= __le32_to_cpu(sb
->max_dev
))
1225 sb
->max_dev
= __cpu_to_le32(max
+1);
1227 random_uuid(sb
->device_uuid
);
1230 __cpu_to_le16(info
->disk
.raid_disk
);
1232 fd
= open(devname
, O_RDONLY
);
1234 unsigned long long ds
;
1235 get_dev_size(fd
, devname
, &ds
);
1238 if (__le64_to_cpu(sb
->super_offset
) <
1239 __le64_to_cpu(sb
->data_offset
)) {
1240 sb
->data_size
= __cpu_to_le64(
1241 ds
- __le64_to_cpu(sb
->data_offset
));
1244 ds
&= ~(unsigned long long)(4*2-1);
1245 sb
->super_offset
= __cpu_to_le64(ds
);
1246 sb
->data_size
= __cpu_to_le64(
1247 ds
- __le64_to_cpu(sb
->data_offset
));
1250 } else if (strcmp(update
, "linear-grow-update") == 0) {
1251 sb
->raid_disks
= __cpu_to_le32(info
->array
.raid_disks
);
1252 sb
->dev_roles
[info
->disk
.number
] =
1253 __cpu_to_le16(info
->disk
.raid_disk
);
1254 } else if (strcmp(update
, "resync") == 0) {
1255 /* make sure resync happens */
1256 sb
->resync_offset
= 0ULL;
1257 } else if (strcmp(update
, "uuid") == 0) {
1258 copy_uuid(sb
->set_uuid
, info
->uuid
, super1
.swapuuid
);
1260 if (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
)
1261 memcpy(bms
->uuid
, sb
->set_uuid
, 16);
1262 } else if (strcmp(update
, "no-bitmap") == 0) {
1263 sb
->feature_map
&= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
);
1264 } else if (strcmp(update
, "bbl") == 0) {
1265 /* only possible if there is room after the bitmap, or if
1266 * there is no bitmap
1268 unsigned long long sb_offset
= __le64_to_cpu(sb
->super_offset
);
1269 unsigned long long data_offset
= __le64_to_cpu(sb
->data_offset
);
1270 long bitmap_offset
= 0;
1271 long bm_sectors
= 0;
1274 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1275 bitmap_offset
= (long)__le32_to_cpu(sb
->bitmap_offset
);
1276 bm_sectors
= calc_bitmap_size(bms
, 4096) >> 9;
1277 } else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_PPL
)) {
1278 bitmap_offset
= (long)__le16_to_cpu(sb
->ppl
.offset
);
1279 bm_sectors
= (long)__le16_to_cpu(sb
->ppl
.size
);
1282 if (sb_offset
< data_offset
) {
1283 /* 1.1 or 1.2. Put bbl after bitmap leaving at least 32K
1286 bb_offset
= sb_offset
+ 8;
1287 if (bm_sectors
&& bitmap_offset
> 0)
1288 bb_offset
= bitmap_offset
+ bm_sectors
;
1289 while (bb_offset
< (long)sb_offset
+ 8 + 32*2
1290 && bb_offset
+ 8+8 <= (long)data_offset
)
1291 /* too close to bitmap, and room to grow */
1293 if (bb_offset
+ 8 <= (long)data_offset
) {
1294 sb
->bblog_size
= __cpu_to_le16(8);
1295 sb
->bblog_offset
= __cpu_to_le32(bb_offset
);
1298 /* 1.0 - Put bbl just before super block */
1299 if (bm_sectors
&& bitmap_offset
< 0)
1300 space
= -bitmap_offset
- bm_sectors
;
1302 space
= sb_offset
- data_offset
-
1303 __le64_to_cpu(sb
->data_size
);
1305 sb
->bblog_size
= __cpu_to_le16(8);
1306 sb
->bblog_offset
= __cpu_to_le32((unsigned)-8);
1309 } else if (strcmp(update
, "no-bbl") == 0) {
1310 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
1311 pr_err("Cannot remove active bbl from %s\n",devname
);
1314 sb
->bblog_shift
= 0;
1315 sb
->bblog_offset
= 0;
1317 } else if (strcmp(update
, "force-no-bbl") == 0) {
1318 sb
->feature_map
&= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
);
1320 sb
->bblog_shift
= 0;
1321 sb
->bblog_offset
= 0;
1322 } else if (strcmp(update
, "ppl") == 0) {
1323 unsigned long long sb_offset
= __le64_to_cpu(sb
->super_offset
);
1324 unsigned long long data_offset
= __le64_to_cpu(sb
->data_offset
);
1325 unsigned long long data_size
= __le64_to_cpu(sb
->data_size
);
1326 long bb_offset
= __le32_to_cpu(sb
->bblog_offset
);
1331 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1332 pr_err("Cannot add PPL to array with bitmap\n");
1336 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_JOURNAL
)) {
1337 pr_err("Cannot add PPL to array with journal\n");
1341 if (sb_offset
< data_offset
) {
1343 space
= bb_offset
- 8;
1345 space
= data_offset
- sb_offset
- 8;
1348 offset
= -(sb_offset
- data_offset
- data_size
);
1349 if (offset
< INT16_MIN
)
1351 space
= -(offset
- bb_offset
);
1354 if (space
< (PPL_HEADER_SIZE
>> 9) + 8) {
1355 pr_err("Not enough space to add ppl\n");
1359 optimal_space
= choose_ppl_space(__le32_to_cpu(sb
->chunksize
));
1361 if (space
> optimal_space
)
1362 space
= optimal_space
;
1363 if (space
> UINT16_MAX
)
1366 sb
->ppl
.offset
= __cpu_to_le16(offset
);
1367 sb
->ppl
.size
= __cpu_to_le16(space
);
1368 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_PPL
);
1369 } else if (strcmp(update
, "no-ppl") == 0) {
1370 sb
->feature_map
&= ~ __cpu_to_le32(MD_FEATURE_PPL
);
1371 } else if (strcmp(update
, "name") == 0) {
1372 if (info
->name
[0] == 0)
1373 sprintf(info
->name
, "%d", info
->array
.md_minor
);
1374 memset(sb
->set_name
, 0, sizeof(sb
->set_name
));
1376 strchr(info
->name
, ':') == NULL
&&
1377 strlen(homehost
)+1+strlen(info
->name
) < 32) {
1378 strcpy(sb
->set_name
, homehost
);
1379 strcat(sb
->set_name
, ":");
1380 strcat(sb
->set_name
, info
->name
);
1382 strncpy(sb
->set_name
, info
->name
, sizeof(sb
->set_name
));
1383 } else if (strcmp(update
, "devicesize") == 0 &&
1384 __le64_to_cpu(sb
->super_offset
) <
1385 __le64_to_cpu(sb
->data_offset
)) {
1386 /* set data_size to device size less data_offset */
1387 struct misc_dev_info
*misc
= (struct misc_dev_info
*)
1388 (st
->sb
+ MAX_SB_SIZE
+ BM_SUPER_SIZE
);
1389 sb
->data_size
= __cpu_to_le64(
1390 misc
->device_size
- __le64_to_cpu(sb
->data_offset
));
1391 } else if (strncmp(update
, "revert-reshape", 14) == 0) {
1393 if (!(sb
->feature_map
& __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
)))
1394 pr_err("No active reshape to revert on %s\n",
1398 unsigned long long reshape_sectors
;
1401 /* If the reshape hasn't started, just stop it.
1402 * It is conceivable that a stripe was modified but
1403 * the metadata not updated. In that case the backup
1404 * should have been used to get passed the critical stage.
1405 * If that couldn't happen, the "-nobackup" version
1408 if (strcmp(update
, "revert-reshape-nobackup") == 0 &&
1409 sb
->reshape_position
== 0 &&
1410 (__le32_to_cpu(sb
->delta_disks
) > 0 ||
1411 (__le32_to_cpu(sb
->delta_disks
) == 0 &&
1412 !(sb
->feature_map
& __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS
))))) {
1413 sb
->feature_map
&= ~__cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
);
1414 sb
->raid_disks
= __cpu_to_le32(__le32_to_cpu(sb
->raid_disks
) -
1415 __le32_to_cpu(sb
->delta_disks
));
1416 sb
->delta_disks
= 0;
1419 /* reshape_position is a little messy.
1420 * Its value must be a multiple of the larger
1421 * chunk size, and of the "after" data disks.
1422 * So when reverting we need to change it to
1423 * be a multiple of the new "after" data disks,
1424 * which is the old "before".
1425 * If it isn't already a multiple of 'before',
1426 * the only thing we could do would be
1427 * copy some block around on the disks, which
1428 * is easy to get wrong.
1429 * So we reject a revert-reshape unless the
1430 * alignment is good.
1432 if (__le32_to_cpu(sb
->level
) >= 4 &&
1433 __le32_to_cpu(sb
->level
) <= 6) {
1434 reshape_sectors
= __le64_to_cpu(sb
->reshape_position
);
1435 reshape_chunk
= __le32_to_cpu(sb
->new_chunk
);
1436 reshape_chunk
*= __le32_to_cpu(sb
->raid_disks
) - __le32_to_cpu(sb
->delta_disks
) -
1437 (__le32_to_cpu(sb
->level
)==6 ? 2 : 1);
1438 if (reshape_sectors
% reshape_chunk
) {
1439 pr_err("Reshape position is not suitably aligned.\n");
1440 pr_err("Try normal assembly and stop again\n");
1444 sb
->raid_disks
= __cpu_to_le32(__le32_to_cpu(sb
->raid_disks
) -
1445 __le32_to_cpu(sb
->delta_disks
));
1446 if (sb
->delta_disks
== 0)
1447 sb
->feature_map
^= __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS
);
1449 sb
->delta_disks
= __cpu_to_le32(-__le32_to_cpu(sb
->delta_disks
));
1451 temp
= sb
->new_layout
;
1452 sb
->new_layout
= sb
->layout
;
1455 temp
= sb
->new_chunk
;
1456 sb
->new_chunk
= sb
->chunksize
;
1457 sb
->chunksize
= temp
;
1459 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_NEW_OFFSET
)) {
1460 long offset_delta
= (int32_t)__le32_to_cpu(sb
->new_offset
);
1461 sb
->data_offset
= __cpu_to_le64(__le64_to_cpu(sb
->data_offset
) + offset_delta
);
1462 sb
->new_offset
= __cpu_to_le32(-offset_delta
);
1463 sb
->data_size
= __cpu_to_le64(__le64_to_cpu(sb
->data_size
) - offset_delta
);
1467 } else if (strcmp(update
, "_reshape_progress")==0)
1468 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
1469 else if (strcmp(update
, "writemostly")==0)
1470 sb
->devflags
|= WriteMostly1
;
1471 else if (strcmp(update
, "readwrite")==0)
1472 sb
->devflags
&= ~WriteMostly1
;
1473 else if (strcmp(update
, "failfast") == 0)
1474 sb
->devflags
|= FailFast1
;
1475 else if (strcmp(update
, "nofailfast") == 0)
1476 sb
->devflags
&= ~FailFast1
;
1480 sb
->sb_csum
= calc_sb_1_csum(sb
);
1481 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready())
1482 cluster_release_dlmlock(lockid
);
1487 static int init_super1(struct supertype
*st
, mdu_array_info_t
*info
,
1488 struct shape
*s
, char *name
, char *homehost
,
1489 int *uuid
, unsigned long long data_offset
)
1491 struct mdp_superblock_1
*sb
;
1496 if (posix_memalign((void**)&sb
, 4096, SUPER1_SIZE
) != 0) {
1497 pr_err("could not allocate superblock\n");
1500 memset(sb
, 0, SUPER1_SIZE
);
1504 /* zeroing superblock */
1508 spares
= info
->working_disks
- info
->active_disks
;
1509 if (info
->raid_disks
+ spares
> MAX_DEVS
) {
1510 pr_err("too many devices requested: %d+%d > %d\n",
1511 info
->raid_disks
, spares
, MAX_DEVS
);
1515 sb
->magic
= __cpu_to_le32(MD_SB_MAGIC
);
1516 sb
->major_version
= __cpu_to_le32(1);
1517 sb
->feature_map
= 0;
1521 copy_uuid(sb
->set_uuid
, uuid
, super1
.swapuuid
);
1523 random_uuid(sb
->set_uuid
);;
1525 if (name
== NULL
|| *name
== 0) {
1526 sprintf(defname
, "%d", info
->md_minor
);
1530 strchr(name
, ':')== NULL
&&
1531 strlen(homehost
)+1+strlen(name
) < 32) {
1532 strcpy(sb
->set_name
, homehost
);
1533 strcat(sb
->set_name
, ":");
1534 strcat(sb
->set_name
, name
);
1536 strncpy(sb
->set_name
, name
, sizeof(sb
->set_name
));
1538 sb
->ctime
= __cpu_to_le64((unsigned long long)time(0));
1539 sb
->level
= __cpu_to_le32(info
->level
);
1540 sb
->layout
= __cpu_to_le32(info
->layout
);
1541 sb
->size
= __cpu_to_le64(s
->size
*2ULL);
1542 sb
->chunksize
= __cpu_to_le32(info
->chunk_size
>>9);
1543 sb
->raid_disks
= __cpu_to_le32(info
->raid_disks
);
1545 sb
->data_offset
= __cpu_to_le64(data_offset
);
1546 sb
->data_size
= __cpu_to_le64(0);
1547 sb
->super_offset
= __cpu_to_le64(0);
1548 sb
->recovery_offset
= __cpu_to_le64(0);
1550 sb
->utime
= sb
->ctime
;
1551 sb
->events
= __cpu_to_le64(1);
1552 if (info
->state
& (1<<MD_SB_CLEAN
))
1553 sb
->resync_offset
= MaxSector
;
1555 sb
->resync_offset
= 0;
1556 sbsize
= sizeof(struct mdp_superblock_1
) + 2 * (info
->raid_disks
+ spares
);
1557 sbsize
= ROUND_UP(sbsize
, 512);
1558 sb
->max_dev
= __cpu_to_le32((sbsize
- sizeof(struct mdp_superblock_1
)) / 2);
1560 memset(sb
->dev_roles
, 0xff, MAX_SB_SIZE
- sizeof(struct mdp_superblock_1
));
1562 if (s
->consistency_policy
== CONSISTENCY_POLICY_PPL
)
1563 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_PPL
);
1571 long long data_offset
;
1572 mdu_disk_info_t disk
;
1573 struct devinfo
*next
;
1576 /* Add a device to the superblock being created */
1577 static int add_to_super1(struct supertype
*st
, mdu_disk_info_t
*dk
,
1578 int fd
, char *devname
, unsigned long long data_offset
)
1580 struct mdp_superblock_1
*sb
= st
->sb
;
1581 __u16
*rp
= sb
->dev_roles
+ dk
->number
;
1582 struct devinfo
*di
, **dip
;
1583 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
1587 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready()) {
1588 rv
= cluster_get_dlmlock(&lockid
);
1590 pr_err("Cannot get dlmlock in %s return %d\n", __func__
, rv
);
1591 cluster_release_dlmlock(lockid
);
1596 dk_state
= dk
->state
& ~(1<<MD_DISK_FAILFAST
);
1597 if ((dk_state
& (1<<MD_DISK_ACTIVE
)) &&
1598 (dk_state
& (1<<MD_DISK_SYNC
)))/* active, sync */
1599 *rp
= __cpu_to_le16(dk
->raid_disk
);
1600 else if (dk_state
& (1<<MD_DISK_JOURNAL
))
1601 *rp
= MD_DISK_ROLE_JOURNAL
;
1602 else if ((dk_state
& ~(1<<MD_DISK_ACTIVE
)) == 0) /* active or idle -> spare */
1603 *rp
= MD_DISK_ROLE_SPARE
;
1605 *rp
= MD_DISK_ROLE_FAULTY
;
1607 if (dk
->number
>= (int)__le32_to_cpu(sb
->max_dev
) &&
1608 __le32_to_cpu(sb
->max_dev
) < MAX_DEVS
)
1609 sb
->max_dev
= __cpu_to_le32(dk
->number
+1);
1611 sb
->dev_number
= __cpu_to_le32(dk
->number
);
1612 sb
->devflags
= 0; /* don't copy another disks flags */
1613 sb
->sb_csum
= calc_sb_1_csum(sb
);
1615 dip
= (struct devinfo
**)&st
->info
;
1617 dip
= &(*dip
)->next
;
1618 di
= xmalloc(sizeof(struct devinfo
));
1620 di
->devname
= devname
;
1622 di
->data_offset
= data_offset
;
1626 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready())
1627 cluster_release_dlmlock(lockid
);
1632 static int locate_bitmap1(struct supertype
*st
, int fd
, int node_num
);
1634 static int store_super1(struct supertype
*st
, int fd
)
1636 struct mdp_superblock_1
*sb
= st
->sb
;
1637 unsigned long long sb_offset
;
1638 struct align_fd afd
;
1640 unsigned long long dsize
;
1641 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
1644 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready()) {
1645 rv
= cluster_get_dlmlock(&lockid
);
1647 pr_err("Cannot get dlmlock in %s return %d\n", __func__
, rv
);
1648 cluster_release_dlmlock(lockid
);
1653 if (!get_dev_size(fd
, NULL
, &dsize
))
1664 * Calculate the position of the superblock.
1665 * It is always aligned to a 4K boundary and
1666 * depending on minor_version, it can be:
1667 * 0: At least 8K, but less than 12K, from end of device
1668 * 1: At start of device
1669 * 2: 4K from start of device.
1671 switch(st
->minor_version
) {
1675 sb_offset
&= ~(4*2-1);
1687 if (sb_offset
!= __le64_to_cpu(sb
->super_offset
) &&
1688 0 != __le64_to_cpu(sb
->super_offset
)
1690 pr_err("internal error - sb_offset is wrong\n");
1694 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL)
1697 sbsize
= ROUND_UP(sizeof(*sb
) + 2 * __le32_to_cpu(sb
->max_dev
), 512);
1699 if (awrite(&afd
, sb
, sbsize
) != sbsize
)
1702 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1703 struct bitmap_super_s
*bm
= (struct bitmap_super_s
*)
1704 (((char*)sb
)+MAX_SB_SIZE
);
1705 if (__le32_to_cpu(bm
->magic
) == BITMAP_MAGIC
) {
1706 locate_bitmap1(st
, fd
, 0);
1707 if (awrite(&afd
, bm
, sizeof(*bm
)) != sizeof(*bm
))
1712 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready())
1713 cluster_release_dlmlock(lockid
);
1718 static int load_super1(struct supertype
*st
, int fd
, char *devname
);
1720 static unsigned long choose_bm_space(unsigned long devsize
)
1722 /* if the device is bigger than 8Gig, save 64k for bitmap usage,
1723 * if bigger than 200Gig, save 128k
1724 * NOTE: result must be multiple of 4K else bad things happen
1725 * on 4K-sector devices.
1729 if (devsize
- 64*2 >= 200*1024*1024*2)
1731 if (devsize
- 4*2 > 8*1024*1024*2)
1736 static void free_super1(struct supertype
*st
);
1738 __u32
crc32c_le(__u32 crc
, unsigned char const *p
, size_t len
);
1740 static int write_init_ppl1(struct supertype
*st
, struct mdinfo
*info
, int fd
)
1742 struct mdp_superblock_1
*sb
= st
->sb
;
1744 struct ppl_header
*ppl_hdr
;
1747 ret
= posix_memalign(&buf
, 4096, PPL_HEADER_SIZE
);
1749 pr_err("Failed to allocate PPL header buffer\n");
1753 memset(buf
, 0, PPL_HEADER_SIZE
);
1755 memset(ppl_hdr
->reserved
, 0xff, PPL_HDR_RESERVED
);
1756 ppl_hdr
->signature
= __cpu_to_le32(~crc32c_le(~0, sb
->set_uuid
,
1757 sizeof(sb
->set_uuid
)));
1758 ppl_hdr
->checksum
= __cpu_to_le32(~crc32c_le(~0, buf
, PPL_HEADER_SIZE
));
1760 if (lseek64(fd
, info
->ppl_sector
* 512, SEEK_SET
) < 0) {
1762 perror("Failed to seek to PPL header location");
1765 if (!ret
&& write(fd
, buf
, PPL_HEADER_SIZE
) != PPL_HEADER_SIZE
) {
1767 perror("Write PPL header failed");
1777 #define META_BLOCK_SIZE 4096
1779 static int write_empty_r5l_meta_block(struct supertype
*st
, int fd
)
1781 struct r5l_meta_block
*mb
;
1782 struct mdp_superblock_1
*sb
= st
->sb
;
1783 struct align_fd afd
;
1788 if (posix_memalign((void**)&mb
, 4096, META_BLOCK_SIZE
) != 0) {
1789 pr_err("Could not allocate memory for the meta block.\n");
1793 memset(mb
, 0, META_BLOCK_SIZE
);
1795 mb
->magic
= __cpu_to_le32(R5LOG_MAGIC
);
1796 mb
->version
= R5LOG_VERSION
;
1797 mb
->meta_size
= __cpu_to_le32(sizeof(struct r5l_meta_block
));
1798 mb
->seq
= __cpu_to_le64(random32());
1799 mb
->position
= __cpu_to_le64(0);
1801 crc
= crc32c_le(0xffffffff, sb
->set_uuid
, sizeof(sb
->set_uuid
));
1802 crc
= crc32c_le(crc
, (void *)mb
, META_BLOCK_SIZE
);
1805 if (lseek64(fd
, __le64_to_cpu(sb
->data_offset
) * 512, 0) < 0LL) {
1806 pr_err("cannot seek to offset of the meta block\n");
1810 if (awrite(&afd
, mb
, META_BLOCK_SIZE
) != META_BLOCK_SIZE
) {
1811 pr_err("failed to store write the meta block \n");
1824 static int write_init_super1(struct supertype
*st
)
1826 struct mdp_superblock_1
*sb
= st
->sb
;
1827 struct supertype
*refst
;
1829 unsigned long long bm_space
;
1831 unsigned long long dsize
, array_size
;
1832 unsigned long long sb_offset
;
1833 unsigned long long data_offset
;
1836 for (di
= st
->info
; di
; di
= di
->next
) {
1837 if (di
->disk
.state
& (1 << MD_DISK_JOURNAL
))
1838 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_JOURNAL
);
1841 for (di
= st
->info
; di
; di
= di
->next
) {
1842 if (di
->disk
.state
& (1 << MD_DISK_FAULTY
))
1847 while (Kill(di
->devname
, NULL
, 0, -1, 1) == 0)
1850 sb
->dev_number
= __cpu_to_le32(di
->disk
.number
);
1851 if (di
->disk
.state
& (1<<MD_DISK_WRITEMOSTLY
))
1852 sb
->devflags
|= WriteMostly1
;
1854 sb
->devflags
&= ~WriteMostly1
;
1855 if (di
->disk
.state
& (1<<MD_DISK_FAILFAST
))
1856 sb
->devflags
|= FailFast1
;
1858 sb
->devflags
&= ~FailFast1
;
1860 random_uuid(sb
->device_uuid
);
1862 if (!(di
->disk
.state
& (1<<MD_DISK_JOURNAL
)))
1865 refst
= dup_super(st
);
1866 if (load_super1(refst
, di
->fd
, NULL
)==0) {
1867 struct mdp_superblock_1
*refsb
= refst
->sb
;
1869 memcpy(sb
->device_uuid
, refsb
->device_uuid
, 16);
1870 if (memcmp(sb
->set_uuid
, refsb
->set_uuid
, 16)==0) {
1871 /* same array, so preserve events and
1873 sb
->events
= refsb
->events
;
1874 /* bugs in 2.6.17 and earlier mean the
1875 * dev_number chosen in Manage must be preserved
1877 if (get_linux_version() >= 2006018)
1878 sb
->dev_number
= refsb
->dev_number
;
1884 if (!get_dev_size(di
->fd
, NULL
, &dsize
)) {
1897 * Calculate the position of the superblock.
1898 * It is always aligned to a 4K boundary and
1899 * depending on minor_version, it can be:
1900 * 0: At least 8K, but less than 12K, from end of device
1901 * 1: At start of device
1902 * 2: 4K from start of device.
1903 * data_offset has already been set.
1905 array_size
= __le64_to_cpu(sb
->size
);
1907 /* work out how much space we left for a bitmap */
1908 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1909 bitmap_super_t
*bms
= (bitmap_super_t
*)
1910 (((char *)sb
) + MAX_SB_SIZE
);
1911 bm_space
= calc_bitmap_size(bms
, 4096) >> 9;
1912 bm_offset
= (long)__le32_to_cpu(sb
->bitmap_offset
);
1913 } else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_PPL
)) {
1914 bm_space
= choose_ppl_space(__le32_to_cpu(sb
->chunksize
));
1915 if (bm_space
> UINT16_MAX
)
1916 bm_space
= UINT16_MAX
;
1917 if (st
->minor_version
== 0) {
1918 bm_offset
= -bm_space
- 8;
1919 if (bm_offset
< INT16_MIN
) {
1920 bm_offset
= INT16_MIN
;
1921 bm_space
= -bm_offset
- 8;
1926 sb
->ppl
.offset
= __cpu_to_le16(bm_offset
);
1927 sb
->ppl
.size
= __cpu_to_le16(bm_space
);
1929 bm_space
= choose_bm_space(array_size
);
1933 data_offset
= di
->data_offset
;
1934 if (data_offset
== INVALID_SECTORS
)
1935 data_offset
= st
->data_offset
;
1936 switch(st
->minor_version
) {
1938 /* Add 8 sectors for bad block log */
1940 if (data_offset
== INVALID_SECTORS
)
1944 sb_offset
&= ~(4*2-1);
1945 sb
->data_offset
= __cpu_to_le64(data_offset
);
1946 sb
->super_offset
= __cpu_to_le64(sb_offset
);
1947 if (sb_offset
< array_size
+ bm_space
)
1948 bm_space
= sb_offset
- array_size
;
1949 sb
->data_size
= __cpu_to_le64(sb_offset
- bm_space
);
1950 if (bm_space
>= 8) {
1951 sb
->bblog_size
= __cpu_to_le16(8);
1952 sb
->bblog_offset
= __cpu_to_le32((unsigned)-8);
1957 sb_offset
= st
->minor_version
== 2 ? 8 : 0;
1958 sb
->super_offset
= __cpu_to_le64(sb_offset
);
1959 if (data_offset
== INVALID_SECTORS
)
1960 data_offset
= sb_offset
+ 16;
1962 sb
->data_offset
= __cpu_to_le64(data_offset
);
1963 sb
->data_size
= __cpu_to_le64(dsize
- data_offset
);
1964 if (data_offset
>= sb_offset
+bm_offset
+bm_space
+8) {
1965 sb
->bblog_size
= __cpu_to_le16(8);
1966 sb
->bblog_offset
= __cpu_to_le32(bm_offset
+
1968 } else if (data_offset
>= sb_offset
+ 16) {
1969 sb
->bblog_size
= __cpu_to_le16(8);
1970 /* '8' sectors for the bblog, and 'sb_offset'
1971 * because we want offset from superblock, not
1974 sb
->bblog_offset
= __cpu_to_le32(data_offset
-
1979 pr_err("Failed to write invalid metadata format 1.%i to %s\n",
1980 st
->minor_version
, di
->devname
);
1984 /* Disable badblock log on clusters, or when explicitly requested */
1985 if (st
->nodes
> 0 || conf_get_create_info()->bblist
== 0) {
1987 sb
->bblog_offset
= 0;
1990 sb
->sb_csum
= calc_sb_1_csum(sb
);
1991 rv
= store_super1(st
, di
->fd
);
1993 if (rv
== 0 && (di
->disk
.state
& (1 << MD_DISK_JOURNAL
))) {
1994 rv
= write_empty_r5l_meta_block(st
, di
->fd
);
2000 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
)) {
2001 rv
= st
->ss
->write_bitmap(st
, di
->fd
, NodeNumUpdate
);
2002 } else if (rv
== 0 &&
2003 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_PPL
)) {
2006 st
->ss
->getinfo_super(st
, &info
, NULL
);
2007 rv
= st
->ss
->write_init_ppl(st
, &info
, di
->fd
);
2017 pr_err("Failed to write metadata to %s\n",
2023 static int compare_super1(struct supertype
*st
, struct supertype
*tst
)
2027 * 0 same, or first was empty, and second was copied
2028 * 1 second had wrong number
2030 * 3 wrong other info
2032 struct mdp_superblock_1
*first
= st
->sb
;
2033 struct mdp_superblock_1
*second
= tst
->sb
;
2035 if (second
->magic
!= __cpu_to_le32(MD_SB_MAGIC
))
2037 if (second
->major_version
!= __cpu_to_le32(1))
2041 if (posix_memalign((void**)&first
, 4096, SUPER1_SIZE
) != 0) {
2042 pr_err("could not allocate superblock\n");
2045 memcpy(first
, second
, SUPER1_SIZE
);
2049 if (memcmp(first
->set_uuid
, second
->set_uuid
, 16)!= 0)
2052 if (first
->ctime
!= second
->ctime
||
2053 first
->level
!= second
->level
||
2054 first
->layout
!= second
->layout
||
2055 first
->size
!= second
->size
||
2056 first
->chunksize
!= second
->chunksize
||
2057 first
->raid_disks
!= second
->raid_disks
)
2062 static int load_super1(struct supertype
*st
, int fd
, char *devname
)
2064 unsigned long long dsize
;
2065 unsigned long long sb_offset
;
2066 struct mdp_superblock_1
*super
;
2068 struct bitmap_super_s
*bsb
;
2069 struct misc_dev_info
*misc
;
2070 struct align_fd afd
;
2076 if (st
->ss
== NULL
|| st
->minor_version
== -1) {
2078 struct supertype tst
;
2079 __u64 bestctime
= 0;
2080 /* guess... choose latest ctime */
2081 memset(&tst
, 0, sizeof(tst
));
2083 for (tst
.minor_version
= 0; tst
.minor_version
<= 2 ; tst
.minor_version
++) {
2084 switch(load_super1(&tst
, fd
, devname
)) {
2085 case 0: super
= tst
.sb
;
2086 if (bestvers
== -1 ||
2087 bestctime
< __le64_to_cpu(super
->ctime
)) {
2088 bestvers
= tst
.minor_version
;
2089 bestctime
= __le64_to_cpu(super
->ctime
);
2094 case 1: return 1; /*bad device */
2095 case 2: break; /* bad, try next */
2098 if (bestvers
!= -1) {
2100 tst
.minor_version
= bestvers
;
2102 tst
.max_devs
= MAX_DEVS
;
2103 rv
= load_super1(&tst
, fd
, devname
);
2110 if (!get_dev_size(fd
, devname
, &dsize
))
2116 pr_err("%s is too small for md: size is %llu sectors.\n",
2122 * Calculate the position of the superblock.
2123 * It is always aligned to a 4K boundary and
2124 * depending on minor_version, it can be:
2125 * 0: At least 8K, but less than 12K, from end of device
2126 * 1: At start of device
2127 * 2: 4K from start of device.
2129 switch(st
->minor_version
) {
2133 sb_offset
&= ~(4*2-1);
2145 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL) {
2147 pr_err("Cannot seek to superblock on %s: %s\n",
2148 devname
, strerror(errno
));
2152 if (posix_memalign((void**)&super
, 4096, SUPER1_SIZE
) != 0) {
2153 pr_err("could not allocate superblock\n");
2157 memset(super
, 0, SUPER1_SIZE
);
2159 if (aread(&afd
, super
, MAX_SB_SIZE
) != MAX_SB_SIZE
) {
2161 pr_err("Cannot read superblock on %s\n",
2167 if (__le32_to_cpu(super
->magic
) != MD_SB_MAGIC
) {
2169 pr_err("No super block found on %s (Expected magic %08x, got %08x)\n",
2170 devname
, MD_SB_MAGIC
, __le32_to_cpu(super
->magic
));
2175 if (__le32_to_cpu(super
->major_version
) != 1) {
2177 pr_err("Cannot interpret superblock on %s - version is %d\n",
2178 devname
, __le32_to_cpu(super
->major_version
));
2182 if (__le64_to_cpu(super
->super_offset
) != sb_offset
) {
2184 pr_err("No superblock found on %s (super_offset is wrong)\n",
2191 bsb
= (struct bitmap_super_s
*)(((char*)super
)+MAX_SB_SIZE
);
2193 misc
= (struct misc_dev_info
*) (((char*)super
)+MAX_SB_SIZE
+BM_SUPER_SIZE
);
2194 misc
->device_size
= dsize
;
2195 if (st
->data_offset
== INVALID_SECTORS
)
2196 st
->data_offset
= __le64_to_cpu(super
->data_offset
);
2198 /* Now check on the bitmap superblock */
2199 if ((__le32_to_cpu(super
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) == 0)
2201 /* Read the bitmap superblock and make sure it looks
2202 * valid. If it doesn't clear the bit. An --assemble --force
2203 * should get that written out.
2205 locate_bitmap1(st
, fd
, 0);
2206 if (aread(&afd
, bsb
, 512) != 512)
2209 uuid_from_super1(st
, uuid
);
2210 if (__le32_to_cpu(bsb
->magic
) != BITMAP_MAGIC
||
2211 memcmp(bsb
->uuid
, uuid
, 16) != 0)
2216 super
->feature_map
= __cpu_to_le32(__le32_to_cpu(super
->feature_map
)
2217 & ~MD_FEATURE_BITMAP_OFFSET
);
2221 static struct supertype
*match_metadata_desc1(char *arg
)
2223 struct supertype
*st
= xcalloc(1, sizeof(*st
));
2225 st
->container_devnm
[0] = 0;
2227 st
->max_devs
= MAX_DEVS
;
2229 st
->data_offset
= INVALID_SECTORS
;
2230 /* leading zeros can be safely ignored. --detail generates them. */
2233 if (strcmp(arg
, "1.0") == 0 ||
2234 strcmp(arg
, "1.00") == 0) {
2235 st
->minor_version
= 0;
2238 if (strcmp(arg
, "1.1") == 0 ||
2239 strcmp(arg
, "1.01") == 0
2241 st
->minor_version
= 1;
2244 if (strcmp(arg
, "1.2") == 0 ||
2245 #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */
2246 strcmp(arg
, "default") == 0 ||
2247 #endif /* DEFAULT_OLD_METADATA */
2248 strcmp(arg
, "1.02") == 0) {
2249 st
->minor_version
= 2;
2252 if (strcmp(arg
, "1") == 0 ||
2253 strcmp(arg
, "default") == 0) {
2254 st
->minor_version
= -1;
2262 /* find available size on device with this devsize, using
2263 * superblock type st, and reserving 'reserve' sectors for
2266 static __u64
avail_size1(struct supertype
*st
, __u64 devsize
,
2267 unsigned long long data_offset
)
2269 struct mdp_superblock_1
*super
= st
->sb
;
2275 if (__le32_to_cpu(super
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
) {
2276 /* hot-add. allow for actual size of bitmap */
2277 struct bitmap_super_s
*bsb
;
2278 bsb
= (struct bitmap_super_s
*)(((char*)super
)+MAX_SB_SIZE
);
2279 bmspace
= calc_bitmap_size(bsb
, 4096) >> 9;
2280 } else if (__le32_to_cpu(super
->feature_map
) & MD_FEATURE_PPL
) {
2281 bmspace
= __le16_to_cpu(super
->ppl
.size
);
2284 /* Allow space for bad block log */
2285 if (super
->bblog_size
)
2286 bbspace
= __le16_to_cpu(super
->bblog_size
);
2288 if (st
->minor_version
< 0)
2289 /* not specified, so time to set default */
2290 st
->minor_version
= 2;
2292 if (data_offset
== INVALID_SECTORS
)
2293 data_offset
= st
->data_offset
;
2295 if (data_offset
!= INVALID_SECTORS
)
2296 switch(st
->minor_version
) {
2298 return devsize
- data_offset
- 8*2 - bbspace
;
2301 return devsize
- data_offset
;
2308 switch(st
->minor_version
) {
2311 return ((devsize
- 8*2 - bbspace
) & ~(4*2-1));
2313 /* at start, 4K for superblock and possible bitmap */
2314 return devsize
- 4*2 - bbspace
;
2316 /* 4k from start, 4K for superblock and possible bitmap */
2317 return devsize
- (4+4)*2 - bbspace
;
2323 add_internal_bitmap1(struct supertype
*st
,
2324 int *chunkp
, int delay
, int write_behind
,
2325 unsigned long long size
,
2326 int may_change
, int major
)
2329 * If not may_change, then this is a 'Grow' without sysfs support for
2330 * bitmaps, and the bitmap must fit after the superblock at 1K offset.
2331 * If may_change, then this is create or a Grow with sysfs syupport,
2332 * and we can put the bitmap wherever we like.
2334 * size is in sectors, chunk is in bytes !!!
2337 unsigned long long bits
;
2338 unsigned long long max_bits
;
2339 unsigned long long min_chunk
;
2341 long bbl_offset
, bbl_size
;
2342 unsigned long long chunk
= *chunkp
;
2346 struct mdp_superblock_1
*sb
= st
->sb
;
2347 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
2350 if (__le64_to_cpu(sb
->data_size
) == 0)
2351 /* Must be creating the array, else data_size would be non-zero */
2353 switch(st
->minor_version
) {
2355 /* either 3K after the superblock (when hot-add),
2356 * or some amount of space before.
2359 /* We are creating array, so we *know* how much room has
2364 room
= choose_bm_space(__le64_to_cpu(sb
->size
)) + bbl_size
;
2366 room
= __le64_to_cpu(sb
->super_offset
)
2367 - __le64_to_cpu(sb
->data_offset
)
2368 - __le64_to_cpu(sb
->data_size
);
2369 bbl_size
= __le16_to_cpu(sb
->bblog_size
);
2372 bbl_offset
= (__s32
)__le32_to_cpu(sb
->bblog_offset
);
2373 if (bbl_size
< -bbl_offset
)
2374 bbl_size
= -bbl_offset
;
2376 if (!may_change
|| (room
< 3*2 &&
2377 __le32_to_cpu(sb
->max_dev
) <= 384)) {
2382 offset
= 0; /* means movable offset */
2387 case 2: /* between superblock and data */
2391 room
= choose_bm_space(__le64_to_cpu(sb
->size
)) + bbl_size
;
2393 room
= __le64_to_cpu(sb
->data_offset
)
2394 - __le64_to_cpu(sb
->super_offset
);
2395 bbl_size
= __le16_to_cpu(sb
->bblog_size
);
2397 room
= __le32_to_cpu(sb
->bblog_offset
) + bbl_size
;
2402 room
-= 2; /* Leave 1K for superblock */
2406 room
-= 4*2; /* leave 4K for superblock */
2416 if (chunk
== UnSet
&& room
> 128*2)
2417 /* Limit to 128K of bitmap when chunk size not requested */
2421 /* No room for a bitmap */
2424 max_bits
= (room
* 512 - sizeof(bitmap_super_t
)) * 8;
2426 min_chunk
= 4096; /* sub-page chunks don't work yet.. */
2427 bits
= (size
*512)/min_chunk
+1;
2428 while (bits
> max_bits
) {
2432 if (chunk
== UnSet
) {
2433 /* For practical purpose, 64Meg is a good
2434 * default chunk size for internal bitmaps.
2437 if (chunk
< 64*1024*1024)
2438 chunk
= 64*1024*1024;
2439 } else if (chunk
< min_chunk
)
2440 return -EINVAL
; /* chunk size too small */
2441 if (chunk
== 0) /* rounding problem */
2445 /* start bitmap on a 4K boundary with enough space for
2448 bits
= (size
*512) / chunk
+ 1;
2449 room
= ((bits
+7)/8 + sizeof(bitmap_super_t
) +4095)/4096;
2450 room
*= 8; /* convert 4K blocks to sectors */
2451 offset
= -room
- bbl_size
;
2454 sb
->bitmap_offset
= (int32_t)__cpu_to_le32(offset
);
2456 sb
->feature_map
= __cpu_to_le32(__le32_to_cpu(sb
->feature_map
)
2457 | MD_FEATURE_BITMAP_OFFSET
);
2458 memset(bms
, 0, sizeof(*bms
));
2459 bms
->magic
= __cpu_to_le32(BITMAP_MAGIC
);
2460 bms
->version
= __cpu_to_le32(major
);
2461 uuid_from_super1(st
, uuid
);
2462 memcpy(bms
->uuid
, uuid
, 16);
2463 bms
->chunksize
= __cpu_to_le32(chunk
);
2464 bms
->daemon_sleep
= __cpu_to_le32(delay
);
2465 bms
->sync_size
= __cpu_to_le64(size
);
2466 bms
->write_behind
= __cpu_to_le32(write_behind
);
2467 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2469 sb
->feature_map
= __cpu_to_le32(__le32_to_cpu(sb
->feature_map
)
2470 | MD_FEATURE_BITMAP_VERSIONED
);
2471 if (st
->cluster_name
) {
2472 len
= sizeof(bms
->cluster_name
);
2473 strncpy((char *)bms
->cluster_name
, st
->cluster_name
, len
);
2474 bms
->cluster_name
[len
- 1] = '\0';
2481 static int locate_bitmap1(struct supertype
*st
, int fd
, int node_num
)
2483 unsigned long long offset
;
2484 struct mdp_superblock_1
*sb
;
2489 if (st
->ss
->load_super(st
, fd
, NULL
))
2490 return -1; /* no error I hope... */
2495 if ((__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
2499 offset
= __le64_to_cpu(sb
->super_offset
);
2500 offset
+= (int32_t) __le32_to_cpu(sb
->bitmap_offset
) * (node_num
+ 1);
2503 lseek64(fd
, offset
<<9, 0);
2507 static int write_bitmap1(struct supertype
*st
, int fd
, enum bitmap_update update
)
2509 struct mdp_superblock_1
*sb
= st
->sb
;
2510 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
)+MAX_SB_SIZE
);
2513 int towrite
, n
, len
;
2514 struct align_fd afd
;
2516 unsigned long long total_bm_space
, bm_space_per_node
;
2520 /* update cluster name */
2521 if (st
->cluster_name
) {
2522 len
= sizeof(bms
->cluster_name
);
2523 memset((char *)bms
->cluster_name
, 0, len
);
2524 strncpy((char *)bms
->cluster_name
,
2525 st
->cluster_name
, len
);
2526 bms
->cluster_name
[len
- 1] = '\0';
2530 /* cluster md only supports superblock 1.2 now */
2531 if (st
->minor_version
!= 2 && bms
->version
== BITMAP_MAJOR_CLUSTERED
) {
2532 pr_err("Warning: cluster md only works with superblock 1.2\n");
2536 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
) {
2537 if (__cpu_to_le32(st
->nodes
) < bms
->nodes
) {
2538 /* Since the nodes num is not increased, no need to check the space
2539 * is enough or not, just update bms->nodes */
2540 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2544 /* no need to change bms->nodes for other bitmap types */
2546 pr_err("Warning: --nodes option is only suitable for clustered bitmap\n");
2550 /* Each node has an independent bitmap, it is necessary to calculate the
2551 * space is enough or not, first get how many bytes for the total bitmap */
2552 bm_space_per_node
= calc_bitmap_size(bms
, 4096);
2554 total_bm_space
= 512 * (__le64_to_cpu(sb
->data_offset
) - __le64_to_cpu(sb
->super_offset
));
2555 total_bm_space
= total_bm_space
- 4096; /* leave another 4k for superblock */
2557 if (bm_space_per_node
* st
->nodes
> total_bm_space
) {
2558 pr_err("Warning: The max num of nodes can't exceed %llu\n",
2559 total_bm_space
/ bm_space_per_node
);
2563 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2572 locate_bitmap1(st
, fd
, 0);
2574 if (posix_memalign(&buf
, 4096, 4096))
2578 /* Only the bitmap[0] should resync
2579 * whole device on initial assembly
2582 memset(buf
, 0x00, 4096);
2584 memset(buf
, 0xff, 4096);
2585 memcpy(buf
, (char *)bms
, sizeof(bitmap_super_t
));
2588 * use 4096 boundary if bitmap_offset is aligned
2589 * with 8 sectors, then it should compatible with
2592 if (__le32_to_cpu(sb
->bitmap_offset
) & 7)
2593 towrite
= calc_bitmap_size(bms
, 512);
2595 towrite
= calc_bitmap_size(bms
, 4096);
2596 while (towrite
> 0) {
2600 n
= awrite(&afd
, buf
, n
);
2606 memset(buf
, 0x00, 4096);
2608 memset(buf
, 0xff, 4096);
2615 } while (++i
< __le32_to_cpu(bms
->nodes
));
2621 static void free_super1(struct supertype
*st
)
2627 struct devinfo
*di
= st
->info
;
2628 st
->info
= di
->next
;
2636 static int validate_geometry1(struct supertype
*st
, int level
,
2637 int layout
, int raiddisks
,
2638 int *chunk
, unsigned long long size
,
2639 unsigned long long data_offset
,
2640 char *subdev
, unsigned long long *freesize
,
2641 int consistency_policy
, int verbose
)
2643 unsigned long long ldsize
, devsize
;
2645 unsigned long long headroom
;
2648 if (level
== LEVEL_CONTAINER
) {
2650 pr_err("1.x metadata does not support containers\n");
2653 if (*chunk
== UnSet
)
2654 *chunk
= DEFAULT_CHUNK
;
2659 if (st
->minor_version
< 0)
2660 /* not specified, so time to set default */
2661 st
->minor_version
= 2;
2663 fd
= open(subdev
, O_RDONLY
|O_EXCL
, 0);
2666 pr_err("super1.x cannot open %s: %s\n",
2667 subdev
, strerror(errno
));
2671 if (!get_dev_size(fd
, subdev
, &ldsize
)) {
2677 devsize
= ldsize
>> 9;
2683 /* creating: allow suitable space for bitmap or PPL */
2684 bmspace
= consistency_policy
== CONSISTENCY_POLICY_PPL
?
2685 choose_ppl_space((*chunk
)*2) : choose_bm_space(devsize
);
2687 if (data_offset
== INVALID_SECTORS
)
2688 data_offset
= st
->data_offset
;
2689 if (data_offset
== INVALID_SECTORS
)
2690 switch (st
->minor_version
) {
2696 /* Choose data offset appropriate for this device
2697 * and use as default for whole array.
2698 * The data_offset must allow for bitmap space
2699 * and base metadata, should allow for some headroom
2700 * for reshape, and should be rounded to multiple
2702 * Headroom is limited to 128M, but aim for about 0.1%
2704 headroom
= 128*1024*2;
2705 while ((headroom
<< 10) > devsize
&&
2707 headroom
/ 2 >= ((unsigned)(*chunk
)*2)*2))
2709 data_offset
= 12*2 + bmspace
+ headroom
;
2710 #define ONE_MEG (2*1024)
2711 if (data_offset
> ONE_MEG
)
2712 data_offset
= (data_offset
/ ONE_MEG
) * ONE_MEG
;
2715 if (st
->data_offset
== INVALID_SECTORS
)
2716 st
->data_offset
= data_offset
;
2717 switch(st
->minor_version
) {
2718 case 0: /* metadata at end. Round down and subtract space to reserve */
2719 devsize
= (devsize
& ~(4ULL*2-1));
2720 /* space for metadata, bblog, bitmap/ppl */
2721 devsize
-= 8*2 + 8 + bmspace
;
2725 devsize
-= data_offset
;
2728 *freesize
= devsize
;
2732 void *super1_make_v0(struct supertype
*st
, struct mdinfo
*info
, mdp_super_t
*sb0
)
2734 /* Create a v1.0 superblock based on 'info'*/
2736 struct mdp_superblock_1
*sb
;
2738 unsigned long long offset
;
2740 if (posix_memalign(&ret
, 4096, 1024) != 0)
2743 memset(ret
, 0, 1024);
2744 sb
->magic
= __cpu_to_le32(MD_SB_MAGIC
);
2745 sb
->major_version
= __cpu_to_le32(1);
2747 copy_uuid(sb
->set_uuid
, info
->uuid
, super1
.swapuuid
);
2748 sprintf(sb
->set_name
, "%d", sb0
->md_minor
);
2749 sb
->ctime
= __cpu_to_le32(info
->array
.ctime
+1);
2750 sb
->level
= __cpu_to_le32(info
->array
.level
);
2751 sb
->layout
= __cpu_to_le32(info
->array
.layout
);
2752 sb
->size
= __cpu_to_le64(info
->component_size
);
2753 sb
->chunksize
= __cpu_to_le32(info
->array
.chunk_size
/512);
2754 sb
->raid_disks
= __cpu_to_le32(info
->array
.raid_disks
);
2755 if (info
->array
.level
> 0)
2756 sb
->data_size
= sb
->size
;
2758 sb
->data_size
= st
->ss
->avail_size(st
, st
->devsize
/512, 0);
2759 sb
->resync_offset
= MaxSector
;
2760 sb
->max_dev
= __cpu_to_le32(MD_SB_DISKS
);
2761 sb
->dev_number
= __cpu_to_le32(info
->disk
.number
);
2762 sb
->utime
= __cpu_to_le64(info
->array
.utime
);
2764 offset
= st
->devsize
/512 - 8*2;
2766 sb
->super_offset
= __cpu_to_le64(offset
);
2767 //*(__u64*)(st->other + 128 + 8 + 8) = __cpu_to_le64(offset);
2769 random_uuid(sb
->device_uuid
);
2771 for (i
= 0; i
< MD_SB_DISKS
; i
++) {
2772 int state
= sb0
->disks
[i
].state
;
2773 sb
->dev_roles
[i
] = MD_DISK_ROLE_SPARE
;
2774 if ((state
& (1<<MD_DISK_SYNC
)) &&
2775 !(state
& (1<<MD_DISK_FAULTY
)))
2776 sb
->dev_roles
[i
] = __cpu_to_le16(sb0
->disks
[i
].raid_disk
);
2778 sb
->sb_csum
= calc_sb_1_csum(sb
);
2782 struct superswitch super1
= {
2783 .examine_super
= examine_super1
,
2784 .brief_examine_super
= brief_examine_super1
,
2785 .export_examine_super
= export_examine_super1
,
2786 .detail_super
= detail_super1
,
2787 .brief_detail_super
= brief_detail_super1
,
2788 .export_detail_super
= export_detail_super1
,
2789 .write_init_super
= write_init_super1
,
2790 .validate_geometry
= validate_geometry1
,
2791 .add_to_super
= add_to_super1
,
2792 .examine_badblocks
= examine_badblocks_super1
,
2793 .copy_metadata
= copy_metadata1
,
2794 .write_init_ppl
= write_init_ppl1
,
2795 .match_home
= match_home1
,
2796 .uuid_from_super
= uuid_from_super1
,
2797 .getinfo_super
= getinfo_super1
,
2798 .container_content
= container_content1
,
2799 .update_super
= update_super1
,
2800 .init_super
= init_super1
,
2801 .store_super
= store_super1
,
2802 .compare_super
= compare_super1
,
2803 .load_super
= load_super1
,
2804 .match_metadata_desc
= match_metadata_desc1
,
2805 .avail_size
= avail_size1
,
2806 .add_internal_bitmap
= add_internal_bitmap1
,
2807 .locate_bitmap
= locate_bitmap1
,
2808 .write_bitmap
= write_bitmap1
,
2809 .free_super
= free_super1
,
2810 #if __BYTE_ORDER == BIG_ENDIAN