2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
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>
27 * The version-1 superblock :
28 * All numeric fields are little-endian.
30 * total size: 256 bytes plus 2 per device.
31 * 1K allows 384 devices.
33 struct mdp_superblock_1
{
34 /* constant array information - 128 bytes */
35 __u32 magic
; /* MD_SB_MAGIC: 0xa92b4efc - little endian */
36 __u32 major_version
; /* 1 */
37 __u32 feature_map
; /* 0 for now */
38 __u32 pad0
; /* always set to 0 when writing */
40 __u8 set_uuid
[16]; /* user-space generated. */
41 char set_name
[32]; /* set and interpreted by user-space */
43 __u64 ctime
; /* lo 40 bits are seconds, top 24 are microseconds or 0*/
44 __u32 level
; /* -4 (multipath), -1 (linear), 0,1,4,5 */
45 __u32 layout
; /* only for raid5 currently */
46 __u64 size
; /* used size of component devices, in 512byte sectors */
48 __u32 chunksize
; /* in 512byte sectors */
50 __u32 bitmap_offset
; /* sectors after start of superblock that bitmap starts
51 * NOTE: signed, so bitmap can be before superblock
52 * only meaningful of feature_map[0] is set.
55 /* These are only valid with feature bit '4' */
56 __u32 new_level
; /* new level we are reshaping to */
57 __u64 reshape_position
; /* next address in array-space for reshape */
58 __u32 delta_disks
; /* change in number of raid_disks */
59 __u32 new_layout
; /* new layout */
60 __u32 new_chunk
; /* new chunk size (bytes) */
61 __u32 new_offset
; /* signed number to add to data_offset in new
62 * layout. 0 == no-change. This can be
63 * different on each device in the array.
66 /* constant this-device information - 64 bytes */
67 __u64 data_offset
; /* sector start of data, often 0 */
68 __u64 data_size
; /* sectors in this device that can be used for data */
69 __u64 super_offset
; /* sector start of this superblock */
70 __u64 recovery_offset
;/* sectors before this offset (from data_offset) have been recovered */
71 __u32 dev_number
; /* permanent identifier of this device - not role in raid */
72 __u32 cnt_corrected_read
; /* number of read errors that were corrected by re-writing */
73 __u8 device_uuid
[16]; /* user-space setable, ignored by kernel */
74 __u8 devflags
; /* per-device flags. Only one defined...*/
75 #define WriteMostly1 1 /* mask for writemostly flag in above */
76 /* bad block log. If there are any bad blocks the feature flag is set.
77 * if offset and size are non-zero, that space is reserved and available.
79 __u8 bblog_shift
; /* shift from sectors to block size for badblocklist */
80 __u16 bblog_size
; /* number of sectors reserved for badblocklist */
81 __u32 bblog_offset
; /* sector offset from superblock to bblog, signed */
83 /* array state information - 64 bytes */
84 __u64 utime
; /* 40 bits second, 24 btes microseconds */
85 __u64 events
; /* incremented when superblock updated */
86 __u64 resync_offset
; /* data before this offset (from data_offset) known to be in sync */
87 __u32 sb_csum
; /* checksum upto dev_roles[max_dev] */
88 __u32 max_dev
; /* size of dev_roles[] array to consider */
89 __u8 pad3
[64-32]; /* set to 0 when writing */
91 /* device state information. Indexed by dev_number.
93 * Note there are no per-device state flags. State information is rolled
94 * into the 'roles' value. If a device is spare or faulty, then it doesn't
95 * have a meaningful role.
97 __u16 dev_roles
[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */
100 #define MAX_SB_SIZE 4096
101 /* bitmap super size is 256, but we round up to a sector for alignment */
102 #define BM_SUPER_SIZE 512
103 #define MAX_DEVS ((int)(MAX_SB_SIZE - sizeof(struct mdp_superblock_1)) / 2)
104 #define SUPER1_SIZE (MAX_SB_SIZE + BM_SUPER_SIZE \
105 + sizeof(struct misc_dev_info))
107 struct misc_dev_info
{
111 /* feature_map bits */
112 #define MD_FEATURE_BITMAP_OFFSET 1
113 #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and
116 #define MD_FEATURE_RESHAPE_ACTIVE 4
117 #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */
118 #define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an
119 * active device with same 'role'.
120 * 'recovery_offset' is also set.
122 #define MD_FEATURE_RESHAPE_BACKWARDS 32 /* Reshape doesn't change number
123 * of devices, but is going
126 #define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */
127 #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \
128 |MD_FEATURE_RECOVERY_OFFSET \
129 |MD_FEATURE_RESHAPE_ACTIVE \
130 |MD_FEATURE_BAD_BLOCKS \
131 |MD_FEATURE_REPLACEMENT \
132 |MD_FEATURE_RESHAPE_BACKWARDS \
133 |MD_FEATURE_NEW_OFFSET \
137 #define offsetof(t,f) ((size_t)&(((t*)0)->f))
139 static unsigned int calc_sb_1_csum(struct mdp_superblock_1
* sb
)
141 unsigned int disk_csum
, csum
;
142 unsigned long long newcsum
;
143 int size
= sizeof(*sb
) + __le32_to_cpu(sb
->max_dev
)*2;
144 unsigned int *isuper
= (unsigned int*)sb
;
146 /* make sure I can count... */
147 if (offsetof(struct mdp_superblock_1
,data_offset
) != 128 ||
148 offsetof(struct mdp_superblock_1
, utime
) != 192 ||
149 sizeof(struct mdp_superblock_1
) != 256) {
150 fprintf(stderr
, "WARNING - superblock isn't sized correctly\n");
153 disk_csum
= sb
->sb_csum
;
156 for (; size
>=4; size
-= 4 ) {
157 newcsum
+= __le32_to_cpu(*isuper
);
162 newcsum
+= __le16_to_cpu(*(unsigned short*) isuper
);
164 csum
= (newcsum
& 0xffffffff) + (newcsum
>> 32);
165 sb
->sb_csum
= disk_csum
;
166 return __cpu_to_le32(csum
);
170 * Information related to file descriptor used for aligned reads/writes.
171 * Cache the block size.
178 static void init_afd(struct align_fd
*afd
, int fd
)
182 if (ioctl(afd
->fd
, BLKSSZGET
, &afd
->blk_sz
) != 0)
186 static char abuf
[4096+4096];
187 static int aread(struct align_fd
*afd
, void *buf
, int len
)
190 * On devices with a 4K sector size, we need to read
191 * the full sector and copy relevant bits into
200 if (!bsize
|| bsize
> 4096 || len
> 4096) {
202 fprintf(stderr
, "WARNING - aread() called with "
203 "invalid block size\n");
206 b
= ROUND_UP_PTR((char *)abuf
, 4096);
208 for (iosize
= 0; iosize
< len
; iosize
+= bsize
)
210 n
= read(afd
->fd
, b
, iosize
);
213 lseek(afd
->fd
, len
- n
, 1);
220 static int awrite(struct align_fd
*afd
, void *buf
, int len
)
223 * On devices with a 4K sector size, we need to write
224 * the full sector. We pre-read if the sector is larger
226 * The address must be sector-aligned.
233 if (!bsize
|| bsize
> 4096 || len
> 4096) {
235 fprintf(stderr
, "WARNING - awrite() called with "
236 "invalid block size\n");
239 b
= ROUND_UP_PTR((char *)abuf
, 4096);
241 for (iosize
= 0; iosize
< len
; iosize
+= bsize
)
245 n
= read(afd
->fd
, b
, iosize
);
248 lseek(afd
->fd
, -n
, 1);
252 n
= write(afd
->fd
, b
, iosize
);
255 lseek(afd
->fd
, len
- n
, 1);
260 static void examine_super1(struct supertype
*st
, char *homehost
)
262 struct mdp_superblock_1
*sb
= st
->sb
;
269 int l
= homehost
? strlen(homehost
) : 0;
271 unsigned long long sb_offset
;
273 printf(" Magic : %08x\n", __le32_to_cpu(sb
->magic
));
274 printf(" Version : 1");
275 sb_offset
= __le64_to_cpu(sb
->super_offset
);
278 else if (sb_offset
<= 8)
282 printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb
->feature_map
));
283 printf(" Array UUID : ");
284 for (i
=0; i
<16; i
++) {
285 if ((i
&3)==0 && i
!= 0) printf(":");
286 printf("%02x", sb
->set_uuid
[i
]);
289 printf(" Name : %.32s", sb
->set_name
);
290 if (l
> 0 && l
< 32 &&
291 sb
->set_name
[l
] == ':' &&
292 strncmp(sb
->set_name
, homehost
, l
) == 0)
293 printf(" (local to host %s)", homehost
);
295 atime
= __le64_to_cpu(sb
->ctime
) & 0xFFFFFFFFFFULL
;
296 printf(" Creation Time : %.24s\n", ctime(&atime
));
297 c
=map_num(pers
, __le32_to_cpu(sb
->level
));
298 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
299 printf(" Raid Devices : %d\n", __le32_to_cpu(sb
->raid_disks
));
301 printf(" Avail Dev Size : %llu%s\n",
302 (unsigned long long)__le64_to_cpu(sb
->data_size
),
303 human_size(__le64_to_cpu(sb
->data_size
)<<9));
304 if (__le32_to_cpu(sb
->level
) > 0) {
305 int ddsks
= 0, ddsks_denom
= 1;
306 switch(__le32_to_cpu(sb
->level
)) {
307 case 1: ddsks
=1;break;
309 case 5: ddsks
= __le32_to_cpu(sb
->raid_disks
)-1; break;
310 case 6: ddsks
= __le32_to_cpu(sb
->raid_disks
)-2; break;
312 layout
= __le32_to_cpu(sb
->layout
);
313 ddsks
= __le32_to_cpu(sb
->raid_disks
);
314 ddsks_denom
= (layout
&255) * ((layout
>>8)&255);
317 long long asize
= __le64_to_cpu(sb
->size
);
318 asize
= (asize
<< 9) * ddsks
/ ddsks_denom
;
319 printf(" Array Size : %llu%s\n",
320 asize
>> 10, human_size(asize
));
322 if (sb
->size
!= sb
->data_size
)
323 printf(" Used Dev Size : %llu%s\n",
324 (unsigned long long)__le64_to_cpu(sb
->size
),
325 human_size(__le64_to_cpu(sb
->size
)<<9));
328 printf(" Data Offset : %llu sectors\n",
329 (unsigned long long)__le64_to_cpu(sb
->data_offset
));
330 if (sb
->new_offset
&&
331 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_NEW_OFFSET
)) {
332 unsigned long long offset
= __le64_to_cpu(sb
->data_offset
);
333 offset
+= (signed)(int32_t)__le32_to_cpu(sb
->new_offset
);
334 printf(" New Offset : %llu sectors\n", offset
);
336 printf(" Super Offset : %llu sectors\n",
337 (unsigned long long)__le64_to_cpu(sb
->super_offset
));
338 if (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_RECOVERY_OFFSET
)
339 printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb
->recovery_offset
));
340 printf(" State : %s\n", (__le64_to_cpu(sb
->resync_offset
)+1)? "active":"clean");
341 printf(" Device UUID : ");
342 for (i
=0; i
<16; i
++) {
343 if ((i
&3)==0 && i
!= 0) printf(":");
344 printf("%02x", sb
->device_uuid
[i
]);
348 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
349 printf("Internal Bitmap : %ld sectors from superblock\n",
350 (long)(int32_t)__le32_to_cpu(sb
->bitmap_offset
));
352 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
)) {
353 printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb
->reshape_position
)/2,
354 human_size(__le64_to_cpu(sb
->reshape_position
)<<9));
355 if (__le32_to_cpu(sb
->delta_disks
)) {
356 printf(" Delta Devices : %d", __le32_to_cpu(sb
->delta_disks
));
357 printf(" (%d->%d)\n",
358 __le32_to_cpu(sb
->raid_disks
)-__le32_to_cpu(sb
->delta_disks
),
359 __le32_to_cpu(sb
->raid_disks
));
360 if ((int)__le32_to_cpu(sb
->delta_disks
) < 0)
361 delta_extra
= -__le32_to_cpu(sb
->delta_disks
);
363 if (__le32_to_cpu(sb
->new_level
) != __le32_to_cpu(sb
->level
)) {
364 c
= map_num(pers
, __le32_to_cpu(sb
->new_level
));
365 printf(" New Level : %s\n", c
?c
:"-unknown-");
367 if (__le32_to_cpu(sb
->new_layout
) != __le32_to_cpu(sb
->layout
)) {
368 if (__le32_to_cpu(sb
->level
) == 5) {
369 c
= map_num(r5layout
, __le32_to_cpu(sb
->new_layout
));
370 printf(" New Layout : %s\n", c
?c
:"-unknown-");
372 if (__le32_to_cpu(sb
->level
) == 6) {
373 c
= map_num(r6layout
, __le32_to_cpu(sb
->new_layout
));
374 printf(" New Layout : %s\n", c
?c
:"-unknown-");
376 if (__le32_to_cpu(sb
->level
) == 10) {
377 printf(" New Layout :");
378 print_r10_layout(__le32_to_cpu(sb
->new_layout
));
382 if (__le32_to_cpu(sb
->new_chunk
) != __le32_to_cpu(sb
->chunksize
))
383 printf(" New Chunksize : %dK\n", __le32_to_cpu(sb
->new_chunk
)/2);
388 if (sb
->devflags
& WriteMostly1
)
389 printf(" write-mostly");
393 atime
= __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
;
394 printf(" Update Time : %.24s\n", ctime(&atime
));
396 if (sb
->bblog_size
&& sb
->bblog_offset
) {
397 printf(" Bad Block Log : %d entries available at offset %ld sectors",
398 __le16_to_cpu(sb
->bblog_size
)*512/8,
399 (long)__le32_to_cpu(sb
->bblog_offset
));
400 if (sb
->feature_map
&
401 __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
402 printf(" - bad blocks present.");
407 if (calc_sb_1_csum(sb
) == sb
->sb_csum
)
408 printf(" Checksum : %x - correct\n", __le32_to_cpu(sb
->sb_csum
));
410 printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb
->sb_csum
),
411 __le32_to_cpu(calc_sb_1_csum(sb
)));
412 printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb
->events
));
414 if (__le32_to_cpu(sb
->level
) == 5) {
415 c
= map_num(r5layout
, __le32_to_cpu(sb
->layout
));
416 printf(" Layout : %s\n", c
?c
:"-unknown-");
418 if (__le32_to_cpu(sb
->level
) == 6) {
419 c
= map_num(r6layout
, __le32_to_cpu(sb
->layout
));
420 printf(" Layout : %s\n", c
?c
:"-unknown-");
422 if (__le32_to_cpu(sb
->level
) == 10) {
423 int lo
= __le32_to_cpu(sb
->layout
);
425 print_r10_layout(lo
);
428 switch(__le32_to_cpu(sb
->level
)) {
434 printf(" Chunk Size : %dK\n", __le32_to_cpu(sb
->chunksize
)/2);
437 printf(" Rounding : %dK\n", __le32_to_cpu(sb
->chunksize
)/2);
443 /* This turns out to just be confusing */
444 printf(" Array Slot : %d (", __le32_to_cpu(sb
->dev_number
));
445 for (i
= __le32_to_cpu(sb
->max_dev
); i
> 0 ; i
--)
446 if (__le16_to_cpu(sb
->dev_roles
[i
-1]) != 0xffff)
448 for (d
=0; d
< i
; d
++) {
449 int role
= __le16_to_cpu(sb
->dev_roles
[d
]);
451 if (role
== 0xffff) printf("empty");
452 else if(role
== 0xfffe) printf("failed");
453 else printf("%d", role
);
457 printf(" Device Role : ");
458 d
= __le32_to_cpu(sb
->dev_number
);
459 if (d
< __le32_to_cpu(sb
->max_dev
))
460 role
= __le16_to_cpu(sb
->dev_roles
[d
]);
465 else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_REPLACEMENT
))
466 printf("Replacement device %d\n", role
);
468 printf("Active device %d\n", role
);
470 printf(" Array State : ");
471 for (d
=0; d
<__le32_to_cpu(sb
->raid_disks
) + delta_extra
; d
++) {
474 for (i
=0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
475 unsigned int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
489 /* This is confusing too */
491 for (i
=0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
492 int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
496 if (faulty
) printf(" %d failed", faulty
);
498 printf(" ('A' == active, '.' == missing, 'R' == replacing)");
503 static void brief_examine_super1(struct supertype
*st
, int verbose
)
505 struct mdp_superblock_1
*sb
= st
->sb
;
507 unsigned long long sb_offset
;
509 char *c
=map_num(pers
, __le32_to_cpu(sb
->level
));
511 nm
= strchr(sb
->set_name
, ':');
514 else if (sb
->set_name
[0])
526 printf(" level=%s", c
);
527 sb_offset
= __le64_to_cpu(sb
->super_offset
);
529 printf(" metadata=1.1 ");
530 else if (sb_offset
<= 8)
531 printf(" metadata=1.2 ");
533 printf(" metadata=1.0 ");
535 printf("num-devices=%d ", __le32_to_cpu(sb
->raid_disks
));
537 for (i
=0; i
<16; i
++) {
538 if ((i
&3)==0 && i
!= 0) printf(":");
539 printf("%02x", sb
->set_uuid
[i
]);
541 if (sb
->set_name
[0]) {
543 print_quoted(sb
->set_name
);
548 static void export_examine_super1(struct supertype
*st
)
550 struct mdp_superblock_1
*sb
= st
->sb
;
555 printf("MD_LEVEL=%s\n", map_num(pers
, __le32_to_cpu(sb
->level
)));
556 printf("MD_DEVICES=%d\n", __le32_to_cpu(sb
->raid_disks
));
558 if (sb
->set_name
[i
] == '\n' ||
559 sb
->set_name
[i
] == '\0') {
564 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
565 if (__le32_to_cpu(sb
->level
) > 0) {
566 int ddsks
= 0, ddsks_denom
= 1;
567 switch(__le32_to_cpu(sb
->level
)) {
568 case 1: ddsks
=1;break;
570 case 5: ddsks
= __le32_to_cpu(sb
->raid_disks
)-1; break;
571 case 6: ddsks
= __le32_to_cpu(sb
->raid_disks
)-2; break;
573 layout
= __le32_to_cpu(sb
->layout
);
574 ddsks
= __le32_to_cpu(sb
->raid_disks
);
575 ddsks_denom
= (layout
&255) * ((layout
>>8)&255);
578 long long asize
= __le64_to_cpu(sb
->size
);
579 asize
= (asize
<< 9) * ddsks
/ ddsks_denom
;
580 printf("MD_ARRAY_SIZE=%s\n",human_size_brief(asize
,JEDEC
));
584 for (i
=0; i
<16; i
++) {
585 if ((i
&3)==0 && i
!= 0) printf(":");
586 printf("%02x", sb
->set_uuid
[i
]);
589 printf("MD_UPDATE_TIME=%llu\n",
590 __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
);
591 printf("MD_DEV_UUID=");
592 for (i
=0; i
<16; i
++) {
593 if ((i
&3)==0 && i
!= 0) printf(":");
594 printf("%02x", sb
->device_uuid
[i
]);
597 printf("MD_EVENTS=%llu\n",
598 (unsigned long long)__le64_to_cpu(sb
->events
));
601 static int copy_metadata1(struct supertype
*st
, int from
, int to
)
603 /* Read superblock. If it looks good, write it out.
604 * Then if a bitmap is present, copy that.
605 * And if a bad-block-list is present, copy that too.
608 unsigned long long dsize
, sb_offset
;
609 const int bufsize
= 4*1024;
610 struct mdp_superblock_1 super
, *sb
;
612 if (posix_memalign(&buf
, 4096, bufsize
) != 0)
615 if (!get_dev_size(from
, NULL
, &dsize
))
621 switch(st
->minor_version
) {
625 sb_offset
&= ~(4*2-1);
637 if (lseek64(from
, sb_offset
<< 9, 0) < 0LL)
639 if (read(from
, buf
, bufsize
) != bufsize
)
643 super
= *sb
; // save most of sb for when we reuse buf
645 if (__le32_to_cpu(super
.magic
) != MD_SB_MAGIC
||
646 __le32_to_cpu(super
.major_version
) != 1 ||
647 __le64_to_cpu(super
.super_offset
) != sb_offset
||
648 calc_sb_1_csum(sb
) != super
.sb_csum
)
651 if (lseek64(to
, sb_offset
<< 9, 0) < 0LL)
653 if (write(to
, buf
, bufsize
) != bufsize
)
656 if (super
.feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
657 unsigned long long bitmap_offset
= sb_offset
;
658 int bytes
= 4096; // just an estimate.
660 struct align_fd afrom
, ato
;
662 init_afd(&afrom
, from
);
665 bitmap_offset
+= (int32_t)__le32_to_cpu(super
.bitmap_offset
);
667 if (lseek64(from
, bitmap_offset
<<9, 0) < 0)
669 if (lseek64(to
, bitmap_offset
<<9, 0) < 0)
672 for (written
= 0; written
< bytes
; ) {
673 int n
= bytes
- written
;
676 if (aread(&afrom
, buf
, n
) != n
)
679 /* have the header, can calculate
680 * correct bitmap bytes */
684 bits
= __le64_to_cpu(bms
->sync_size
) / (__le32_to_cpu(bms
->chunksize
)>>9);
685 bytes
= (bits
+7) >> 3;
686 bytes
+= sizeof(bitmap_super_t
);
687 bytes
= ROUND_UP(bytes
, 512);
691 if (awrite(&ato
, buf
, n
) != n
)
697 if (super
.bblog_size
!= 0 &&
698 __le32_to_cpu(super
.bblog_size
) <= 100 &&
699 super
.bblog_offset
!= 0 &&
700 (super
.feature_map
& __le32_to_cpu(MD_FEATURE_BAD_BLOCKS
))) {
701 /* There is a bad block log */
702 unsigned long long bb_offset
= sb_offset
;
703 int bytes
= __le32_to_cpu(super
.bblog_size
) * 512;
705 struct align_fd afrom
, ato
;
707 init_afd(&afrom
, from
);
710 bb_offset
+= (int32_t)__le32_to_cpu(super
.bblog_offset
);
712 if (lseek64(from
, bb_offset
<<9, 0) < 0)
714 if (lseek64(to
, bb_offset
<<9, 0) < 0)
717 for (written
= 0; written
< bytes
; ) {
718 int n
= bytes
- written
;
721 if (aread(&afrom
, buf
, n
) != n
)
724 if (awrite(&ato
, buf
, n
) != n
)
738 static void detail_super1(struct supertype
*st
, char *homehost
)
740 struct mdp_superblock_1
*sb
= st
->sb
;
742 int l
= homehost
? strlen(homehost
) : 0;
744 printf(" Name : %.32s", sb
->set_name
);
745 if (l
> 0 && l
< 32 &&
746 sb
->set_name
[l
] == ':' &&
747 strncmp(sb
->set_name
, homehost
, l
) == 0)
748 printf(" (local to host %s)", homehost
);
749 printf("\n UUID : ");
750 for (i
=0; i
<16; i
++) {
751 if ((i
&3)==0 && i
!= 0) printf(":");
752 printf("%02x", sb
->set_uuid
[i
]);
754 printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb
->events
));
757 static void brief_detail_super1(struct supertype
*st
)
759 struct mdp_superblock_1
*sb
= st
->sb
;
762 if (sb
->set_name
[0]) {
764 print_quoted(sb
->set_name
);
767 for (i
=0; i
<16; i
++) {
768 if ((i
&3)==0 && i
!= 0) printf(":");
769 printf("%02x", sb
->set_uuid
[i
]);
773 static void export_detail_super1(struct supertype
*st
)
775 struct mdp_superblock_1
*sb
= st
->sb
;
780 if (sb
->set_name
[i
] == '\n' ||
781 sb
->set_name
[i
] == '\0') {
786 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
789 static int examine_badblocks_super1(struct supertype
*st
, int fd
, char *devname
)
791 struct mdp_superblock_1
*sb
= st
->sb
;
792 unsigned long long offset
;
797 if (!sb
->bblog_size
|| __le32_to_cpu(sb
->bblog_size
) > 100
798 || !sb
->bblog_offset
){
799 printf("No bad-blocks list configured on %s\n", devname
);
802 if ((sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
804 printf("Bad-blocks list is empty in %s\n", devname
);
808 size
= __le32_to_cpu(sb
->bblog_size
)* 512;
809 if (posix_memalign((void**)&bbl
, 4096, size
) != 0) {
810 pr_err("%s could not allocate badblocks list\n", __func__
);
813 offset
= __le64_to_cpu(sb
->super_offset
) +
814 (int)__le32_to_cpu(sb
->bblog_offset
);
816 if (lseek64(fd
, offset
, 0) < 0) {
817 pr_err("Cannot seek to bad-blocks list\n");
820 if (read(fd
, bbl
, size
) != size
) {
821 pr_err("Cannot read bad-blocks list\n");
824 /* 64bits per entry. 10 bits is block-count, 54 bits is block
825 * offset. Blocks are sectors unless bblog->shift makes them bigger
828 printf("Bad-blocks on %s:\n", devname
);
829 for (i
= 0; i
< size
/8; i
++, bbp
++) {
830 __u64 bb
= __le64_to_cpu(*bbp
);
831 int count
= bb
& 0x3ff;
832 unsigned long long sector
= bb
>> 10;
837 sector
<<= sb
->bblog_shift
;
838 count
<<= sb
->bblog_shift
;
840 printf("%20llu for %d sectors\n", sector
, count
);
847 static int match_home1(struct supertype
*st
, char *homehost
)
849 struct mdp_superblock_1
*sb
= st
->sb
;
850 int l
= homehost
? strlen(homehost
) : 0;
852 return (l
> 0 && l
< 32 &&
853 sb
->set_name
[l
] == ':' &&
854 strncmp(sb
->set_name
, homehost
, l
) == 0);
857 static void uuid_from_super1(struct supertype
*st
, int uuid
[4])
859 struct mdp_superblock_1
*super
= st
->sb
;
860 char *cuuid
= (char*)uuid
;
863 cuuid
[i
] = super
->set_uuid
[i
];
866 static void getinfo_super1(struct supertype
*st
, struct mdinfo
*info
, char *map
)
868 struct mdp_superblock_1
*sb
= st
->sb
;
869 struct bitmap_super_s
*bsb
= (void*)(((char*)sb
)+MAX_SB_SIZE
);
870 struct misc_dev_info
*misc
= (void*)(((char*)sb
)+MAX_SB_SIZE
+BM_SUPER_SIZE
);
874 unsigned int map_disks
= info
->array
.raid_disks
;
875 unsigned long long super_offset
;
876 unsigned long long data_size
;
878 memset(info
, 0, sizeof(*info
));
879 info
->array
.major_version
= 1;
880 info
->array
.minor_version
= st
->minor_version
;
881 info
->array
.patch_version
= 0;
882 info
->array
.raid_disks
= __le32_to_cpu(sb
->raid_disks
);
883 info
->array
.level
= __le32_to_cpu(sb
->level
);
884 info
->array
.layout
= __le32_to_cpu(sb
->layout
);
885 info
->array
.md_minor
= -1;
886 info
->array
.ctime
= __le64_to_cpu(sb
->ctime
);
887 info
->array
.utime
= __le64_to_cpu(sb
->utime
);
888 info
->array
.chunk_size
= __le32_to_cpu(sb
->chunksize
)*512;
890 (__le64_to_cpu(sb
->resync_offset
) == MaxSector
)
893 info
->data_offset
= __le64_to_cpu(sb
->data_offset
);
894 info
->component_size
= __le64_to_cpu(sb
->size
);
895 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
))
896 info
->bitmap_offset
= (int32_t)__le32_to_cpu(sb
->bitmap_offset
);
898 info
->disk
.major
= 0;
899 info
->disk
.minor
= 0;
900 info
->disk
.number
= __le32_to_cpu(sb
->dev_number
);
901 if (__le32_to_cpu(sb
->dev_number
) >= __le32_to_cpu(sb
->max_dev
) ||
902 __le32_to_cpu(sb
->dev_number
) >= MAX_DEVS
)
905 role
= __le16_to_cpu(sb
->dev_roles
[__le32_to_cpu(sb
->dev_number
)]);
907 super_offset
= __le64_to_cpu(sb
->super_offset
);
908 data_size
= __le64_to_cpu(sb
->size
);
909 if (info
->data_offset
< super_offset
) {
910 unsigned long long end
;
911 info
->space_before
= info
->data_offset
;
913 if (info
->bitmap_offset
< 0)
914 end
+= info
->bitmap_offset
;
915 if (info
->data_offset
+ data_size
< end
)
916 info
->space_after
= end
- data_size
- info
->data_offset
;
918 info
->space_after
= 0;
920 info
->space_before
= (info
->data_offset
-
922 if (info
->bitmap_offset
> 0) {
923 unsigned long long bmend
= info
->bitmap_offset
;
924 unsigned long long size
= __le64_to_cpu(bsb
->sync_size
);
925 size
/= __le32_to_cpu(bsb
->chunksize
) >> 9;
926 size
= (size
+ 7) >> 3;
927 size
+= sizeof(bitmap_super_t
);
928 size
= ROUND_UP(size
, 4096);
931 if (size
< info
->space_before
)
932 info
->space_before
-= size
;
934 info
->space_before
= 0;
936 info
->space_before
-= 8; /* superblock */
937 info
->space_after
= misc
->device_size
- data_size
- info
->data_offset
;
940 info
->disk
.raid_disk
= -1;
943 info
->disk
.state
= 0; /* spare: not active, not sync, not faulty */
946 info
->disk
.state
= 1; /* faulty */
949 info
->disk
.state
= 6; /* active and in sync */
950 info
->disk
.raid_disk
= role
;
952 if (sb
->devflags
& WriteMostly1
)
953 info
->disk
.state
|= (1 << MD_DISK_WRITEMOSTLY
);
954 info
->events
= __le64_to_cpu(sb
->events
);
955 sprintf(info
->text_version
, "1.%d", st
->minor_version
);
956 info
->safe_mode_delay
= 200;
958 memcpy(info
->uuid
, sb
->set_uuid
, 16);
960 strncpy(info
->name
, sb
->set_name
, 32);
963 if ((__le32_to_cpu(sb
->feature_map
)&MD_FEATURE_REPLACEMENT
)) {
964 info
->disk
.state
&= ~(1 << MD_DISK_SYNC
);
965 info
->disk
.state
|= 1 << MD_DISK_REPLACEMENT
;
969 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET
))
970 info
->recovery_start
= __le32_to_cpu(sb
->recovery_offset
);
972 info
->recovery_start
= MaxSector
;
974 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
)) {
975 info
->reshape_active
= 1;
976 if (info
->array
.level
== 10)
977 info
->reshape_active
|= RESHAPE_NO_BACKUP
;
978 info
->reshape_progress
= __le64_to_cpu(sb
->reshape_position
);
979 info
->new_level
= __le32_to_cpu(sb
->new_level
);
980 info
->delta_disks
= __le32_to_cpu(sb
->delta_disks
);
981 info
->new_layout
= __le32_to_cpu(sb
->new_layout
);
982 info
->new_chunk
= __le32_to_cpu(sb
->new_chunk
)<<9;
983 if (info
->delta_disks
< 0)
984 info
->array
.raid_disks
-= info
->delta_disks
;
986 info
->reshape_active
= 0;
988 info
->recovery_blocked
= info
->reshape_active
;
991 for (i
=0; i
<map_disks
; i
++)
993 for (i
= 0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
994 role
= __le16_to_cpu(sb
->dev_roles
[i
]);
995 if (/*role == 0xFFFF || */role
< (unsigned) info
->array
.raid_disks
) {
997 if (map
&& role
< map_disks
)
1002 info
->array
.working_disks
= working
;
1005 static struct mdinfo
*container_content1(struct supertype
*st
, char *subarray
)
1007 struct mdinfo
*info
;
1012 info
= xmalloc(sizeof(*info
));
1013 getinfo_super1(st
, info
, NULL
);
1017 static int update_super1(struct supertype
*st
, struct mdinfo
*info
,
1019 char *devname
, int verbose
,
1020 int uuid_set
, char *homehost
)
1022 /* NOTE: for 'assemble' and 'force' we need to return non-zero
1023 * if any change was made. For others, the return value is
1027 struct mdp_superblock_1
*sb
= st
->sb
;
1029 if (strcmp(update
, "homehost") == 0 &&
1031 /* Note that 'homehost' is special as it is really
1036 c
= strchr(sb
->set_name
, ':');
1038 strncpy(info
->name
, c
+1, 31 - (c
-sb
->set_name
));
1040 strncpy(info
->name
, sb
->set_name
, 32);
1044 if (strcmp(update
, "force-one")==0) {
1045 /* Not enough devices for a working array,
1046 * so bring this one up-to-date
1048 if (sb
->events
!= __cpu_to_le64(info
->events
))
1050 sb
->events
= __cpu_to_le64(info
->events
);
1051 } else if (strcmp(update
, "force-array")==0) {
1052 /* Degraded array and 'force' requests to
1053 * maybe need to mark it 'clean'.
1055 switch(__le32_to_cpu(sb
->level
)) {
1056 case 5: case 4: case 6:
1057 /* need to force clean */
1058 if (sb
->resync_offset
!= MaxSector
)
1060 sb
->resync_offset
= MaxSector
;
1062 } else if (strcmp(update
, "assemble")==0) {
1063 int d
= info
->disk
.number
;
1065 if (info
->disk
.state
& (1<<MD_DISK_ACTIVE
))
1066 want
= info
->disk
.raid_disk
;
1069 if (sb
->dev_roles
[d
] != __cpu_to_le16(want
)) {
1070 sb
->dev_roles
[d
] = __cpu_to_le16(want
);
1073 if (info
->reshape_active
&&
1074 sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
) &&
1075 info
->delta_disks
>= 0 &&
1076 info
->reshape_progress
< __le64_to_cpu(sb
->reshape_position
)) {
1077 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
1080 if (info
->reshape_active
&&
1081 sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
) &&
1082 info
->delta_disks
< 0 &&
1083 info
->reshape_progress
> __le64_to_cpu(sb
->reshape_position
)) {
1084 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
1087 } else if (strcmp(update
, "linear-grow-new") == 0) {
1090 unsigned int max
= __le32_to_cpu(sb
->max_dev
);
1092 for (i
=0 ; i
< max
; i
++)
1093 if (__le16_to_cpu(sb
->dev_roles
[i
]) >= 0xfffe)
1095 sb
->dev_number
= __cpu_to_le32(i
);
1096 info
->disk
.number
= i
;
1097 if (max
>= __le32_to_cpu(sb
->max_dev
))
1098 sb
->max_dev
= __cpu_to_le32(max
+1);
1100 if ((rfd
= open("/dev/urandom", O_RDONLY
)) < 0 ||
1101 read(rfd
, sb
->device_uuid
, 16) != 16) {
1102 __u32 r
[4] = {random(), random(), random(), random()};
1103 memcpy(sb
->device_uuid
, r
, 16);
1109 __cpu_to_le16(info
->disk
.raid_disk
);
1111 fd
= open(devname
, O_RDONLY
);
1113 unsigned long long ds
;
1114 get_dev_size(fd
, devname
, &ds
);
1117 if (__le64_to_cpu(sb
->super_offset
) <
1118 __le64_to_cpu(sb
->data_offset
)) {
1119 sb
->data_size
= __cpu_to_le64(
1120 ds
- __le64_to_cpu(sb
->data_offset
));
1123 ds
&= ~(unsigned long long)(4*2-1);
1124 sb
->super_offset
= __cpu_to_le64(ds
);
1125 sb
->data_size
= __cpu_to_le64(
1126 ds
- __le64_to_cpu(sb
->data_offset
));
1129 } else if (strcmp(update
, "linear-grow-update") == 0) {
1130 sb
->raid_disks
= __cpu_to_le32(info
->array
.raid_disks
);
1131 sb
->dev_roles
[info
->disk
.number
] =
1132 __cpu_to_le16(info
->disk
.raid_disk
);
1133 } else if (strcmp(update
, "resync") == 0) {
1134 /* make sure resync happens */
1135 sb
->resync_offset
= 0ULL;
1136 } else if (strcmp(update
, "uuid") == 0) {
1137 copy_uuid(sb
->set_uuid
, info
->uuid
, super1
.swapuuid
);
1139 if (__le32_to_cpu(sb
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) {
1140 struct bitmap_super_s
*bm
;
1141 bm
= (struct bitmap_super_s
*)(st
->sb
+MAX_SB_SIZE
);
1142 memcpy(bm
->uuid
, sb
->set_uuid
, 16);
1144 } else if (strcmp(update
, "no-bitmap") == 0) {
1145 sb
->feature_map
&= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
);
1146 } else if (strcmp(update
, "bbl") == 0) {
1147 /* only possible if there is room after the bitmap, or if
1148 * there is no bitmap
1150 unsigned long long sb_offset
= __le64_to_cpu(sb
->super_offset
);
1151 unsigned long long data_offset
= __le64_to_cpu(sb
->data_offset
);
1152 long bitmap_offset
= (long)__le64_to_cpu(sb
->bitmap_offset
);
1153 long bm_sectors
= 0;
1157 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1158 struct bitmap_super_s
*bsb
;
1159 bsb
= (struct bitmap_super_s
*)(((char*)sb
)+MAX_SB_SIZE
);
1160 bm_sectors
= bitmap_sectors(bsb
);
1163 if (sb_offset
< data_offset
) {
1164 /* 1.1 or 1.2. Put bbl just before data
1167 space
= data_offset
- sb_offset
;
1168 bb_offset
= space
- 8;
1169 if (bm_sectors
&& bitmap_offset
> 0)
1170 space
-= (bitmap_offset
+ bm_sectors
);
1172 space
-= 8; /* The superblock */
1174 sb
->bblog_size
= __cpu_to_le16(8);
1175 sb
->bblog_offset
= __cpu_to_le32(bb_offset
);
1178 /* 1.0 - Put bbl just before super block */
1179 if (bm_sectors
&& bitmap_offset
< 0)
1180 space
= -bitmap_offset
- bm_sectors
;
1182 space
= sb_offset
- data_offset
-
1183 __le64_to_cpu(sb
->data_size
);
1185 sb
->bblog_size
= __cpu_to_le16(8);
1186 sb
->bblog_offset
= __cpu_to_le32((unsigned)-8);
1189 } else if (strcmp(update
, "no-bbl") == 0) {
1190 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
1191 pr_err("Cannot remove active bbl from %s\n",devname
);
1194 sb
->bblog_shift
= 0;
1195 sb
->bblog_offset
= 0;
1197 } else if (strcmp(update
, "name") == 0) {
1198 if (info
->name
[0] == 0)
1199 sprintf(info
->name
, "%d", info
->array
.md_minor
);
1200 memset(sb
->set_name
, 0, sizeof(sb
->set_name
));
1202 strchr(info
->name
, ':') == NULL
&&
1203 strlen(homehost
)+1+strlen(info
->name
) < 32) {
1204 strcpy(sb
->set_name
, homehost
);
1205 strcat(sb
->set_name
, ":");
1206 strcat(sb
->set_name
, info
->name
);
1208 strcpy(sb
->set_name
, info
->name
);
1209 } else if (strcmp(update
, "devicesize") == 0 &&
1210 __le64_to_cpu(sb
->super_offset
) <
1211 __le64_to_cpu(sb
->data_offset
)) {
1212 /* set data_size to device size less data_offset */
1213 struct misc_dev_info
*misc
= (struct misc_dev_info
*)
1214 (st
->sb
+ MAX_SB_SIZE
+ BM_SUPER_SIZE
);
1215 printf("Size was %llu\n", (unsigned long long)
1216 __le64_to_cpu(sb
->data_size
));
1217 sb
->data_size
= __cpu_to_le64(
1218 misc
->device_size
- __le64_to_cpu(sb
->data_offset
));
1219 printf("Size is %llu\n", (unsigned long long)
1220 __le64_to_cpu(sb
->data_size
));
1221 } else if (strcmp(update
, "_reshape_progress")==0)
1222 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
1223 else if (strcmp(update
, "writemostly")==0)
1224 sb
->devflags
|= WriteMostly1
;
1225 else if (strcmp(update
, "readwrite")==0)
1226 sb
->devflags
&= ~WriteMostly1
;
1230 sb
->sb_csum
= calc_sb_1_csum(sb
);
1234 static int init_super1(struct supertype
*st
, mdu_array_info_t
*info
,
1235 unsigned long long size
, char *name
, char *homehost
,
1236 int *uuid
, unsigned long long data_offset
)
1238 struct mdp_superblock_1
*sb
;
1244 if (posix_memalign((void**)&sb
, 4096, SUPER1_SIZE
) != 0) {
1245 pr_err("%s could not allocate superblock\n", __func__
);
1248 memset(sb
, 0, SUPER1_SIZE
);
1252 /* zeroing superblock */
1256 spares
= info
->working_disks
- info
->active_disks
;
1257 if (info
->raid_disks
+ spares
> MAX_DEVS
) {
1258 pr_err("too many devices requested: %d+%d > %d\n",
1259 info
->raid_disks
, spares
, MAX_DEVS
);
1263 sb
->magic
= __cpu_to_le32(MD_SB_MAGIC
);
1264 sb
->major_version
= __cpu_to_le32(1);
1265 sb
->feature_map
= 0;
1269 copy_uuid(sb
->set_uuid
, uuid
, super1
.swapuuid
);
1271 if ((rfd
= open("/dev/urandom", O_RDONLY
)) < 0 ||
1272 read(rfd
, sb
->set_uuid
, 16) != 16) {
1273 __u32 r
[4] = {random(), random(), random(), random()};
1274 memcpy(sb
->set_uuid
, r
, 16);
1276 if (rfd
>= 0) close(rfd
);
1279 if (name
== NULL
|| *name
== 0) {
1280 sprintf(defname
, "%d", info
->md_minor
);
1284 strchr(name
, ':')== NULL
&&
1285 strlen(homehost
)+1+strlen(name
) < 32) {
1286 strcpy(sb
->set_name
, homehost
);
1287 strcat(sb
->set_name
, ":");
1288 strcat(sb
->set_name
, name
);
1290 strcpy(sb
->set_name
, name
);
1292 sb
->ctime
= __cpu_to_le64((unsigned long long)time(0));
1293 sb
->level
= __cpu_to_le32(info
->level
);
1294 sb
->layout
= __cpu_to_le32(info
->layout
);
1295 sb
->size
= __cpu_to_le64(size
*2ULL);
1296 sb
->chunksize
= __cpu_to_le32(info
->chunk_size
>>9);
1297 sb
->raid_disks
= __cpu_to_le32(info
->raid_disks
);
1299 sb
->data_offset
= __cpu_to_le64(data_offset
);
1300 sb
->data_size
= __cpu_to_le64(0);
1301 sb
->super_offset
= __cpu_to_le64(0);
1302 sb
->recovery_offset
= __cpu_to_le64(0);
1304 sb
->utime
= sb
->ctime
;
1305 sb
->events
= __cpu_to_le64(1);
1306 if (info
->state
& (1<<MD_SB_CLEAN
))
1307 sb
->resync_offset
= MaxSector
;
1309 sb
->resync_offset
= 0;
1310 sbsize
= sizeof(struct mdp_superblock_1
) + 2 * (info
->raid_disks
+ spares
);
1311 sbsize
= ROUND_UP(sbsize
, 512);
1312 sb
->max_dev
= __cpu_to_le32((sbsize
- sizeof(struct mdp_superblock_1
)) / 2);
1314 memset(sb
->dev_roles
, 0xff, MAX_SB_SIZE
- sizeof(struct mdp_superblock_1
));
1322 long long data_offset
;
1323 mdu_disk_info_t disk
;
1324 struct devinfo
*next
;
1327 /* Add a device to the superblock being created */
1328 static int add_to_super1(struct supertype
*st
, mdu_disk_info_t
*dk
,
1329 int fd
, char *devname
, unsigned long long data_offset
)
1331 struct mdp_superblock_1
*sb
= st
->sb
;
1332 __u16
*rp
= sb
->dev_roles
+ dk
->number
;
1333 struct devinfo
*di
, **dip
;
1335 if ((dk
->state
& 6) == 6) /* active, sync */
1336 *rp
= __cpu_to_le16(dk
->raid_disk
);
1337 else if ((dk
->state
& ~2) == 0) /* active or idle -> spare */
1342 if (dk
->number
>= (int)__le32_to_cpu(sb
->max_dev
) &&
1343 __le32_to_cpu(sb
->max_dev
) < MAX_DEVS
)
1344 sb
->max_dev
= __cpu_to_le32(dk
->number
+1);
1346 sb
->dev_number
= __cpu_to_le32(dk
->number
);
1347 sb
->devflags
= 0; /* don't copy another disks flags */
1348 sb
->sb_csum
= calc_sb_1_csum(sb
);
1350 dip
= (struct devinfo
**)&st
->info
;
1352 dip
= &(*dip
)->next
;
1353 di
= xmalloc(sizeof(struct devinfo
));
1355 di
->devname
= devname
;
1357 di
->data_offset
= data_offset
;
1365 static void locate_bitmap1(struct supertype
*st
, int fd
);
1367 static int store_super1(struct supertype
*st
, int fd
)
1369 struct mdp_superblock_1
*sb
= st
->sb
;
1370 unsigned long long sb_offset
;
1371 struct align_fd afd
;
1373 unsigned long long dsize
;
1375 if (!get_dev_size(fd
, NULL
, &dsize
))
1386 * Calculate the position of the superblock.
1387 * It is always aligned to a 4K boundary and
1388 * depending on minor_version, it can be:
1389 * 0: At least 8K, but less than 12K, from end of device
1390 * 1: At start of device
1391 * 2: 4K from start of device.
1393 switch(st
->minor_version
) {
1397 sb_offset
&= ~(4*2-1);
1411 if (sb_offset
!= __le64_to_cpu(sb
->super_offset
) &&
1412 0 != __le64_to_cpu(sb
->super_offset
)
1414 pr_err("internal error - sb_offset is wrong\n");
1418 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL)
1421 sbsize
= ROUND_UP(sizeof(*sb
) + 2 * __le32_to_cpu(sb
->max_dev
), 512);
1423 if (awrite(&afd
, sb
, sbsize
) != sbsize
)
1426 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1427 struct bitmap_super_s
*bm
= (struct bitmap_super_s
*)
1428 (((char*)sb
)+MAX_SB_SIZE
);
1429 if (__le32_to_cpu(bm
->magic
) == BITMAP_MAGIC
) {
1430 locate_bitmap1(st
, fd
);
1431 if (awrite(&afd
, bm
, sizeof(*bm
)) != sizeof(*bm
))
1439 static int load_super1(struct supertype
*st
, int fd
, char *devname
);
1441 static unsigned long choose_bm_space(unsigned long devsize
)
1443 /* if the device is bigger than 8Gig, save 64k for bitmap usage,
1444 * if bigger than 200Gig, save 128k
1445 * NOTE: result must be multiple of 4K else bad things happen
1446 * on 4K-sector devices.
1448 if (devsize
< 64*2) return 0;
1449 if (devsize
- 64*2 >= 200*1024*1024*2)
1451 if (devsize
- 4*2 > 8*1024*1024*2)
1456 static void free_super1(struct supertype
*st
);
1459 static int write_init_super1(struct supertype
*st
)
1461 struct mdp_superblock_1
*sb
= st
->sb
;
1462 struct supertype
*refst
;
1465 unsigned long long bm_space
;
1466 unsigned long long reserved
;
1468 unsigned long long dsize
, array_size
;
1469 unsigned long long sb_offset
, headroom
;
1470 unsigned long long data_offset
;
1472 for (di
= st
->info
; di
; di
= di
->next
) {
1473 if (di
->disk
.state
== 1)
1478 while (Kill(di
->devname
, NULL
, 0, -1, 1) == 0)
1481 sb
->dev_number
= __cpu_to_le32(di
->disk
.number
);
1482 if (di
->disk
.state
& (1<<MD_DISK_WRITEMOSTLY
))
1483 sb
->devflags
|= WriteMostly1
;
1485 sb
->devflags
&= ~WriteMostly1
;
1487 if ((rfd
= open("/dev/urandom", O_RDONLY
)) < 0 ||
1488 read(rfd
, sb
->device_uuid
, 16) != 16) {
1489 __u32 r
[4] = {random(), random(), random(), random()};
1490 memcpy(sb
->device_uuid
, r
, 16);
1497 refst
= dup_super(st
);
1498 if (load_super1(refst
, di
->fd
, NULL
)==0) {
1499 struct mdp_superblock_1
*refsb
= refst
->sb
;
1501 memcpy(sb
->device_uuid
, refsb
->device_uuid
, 16);
1502 if (memcmp(sb
->set_uuid
, refsb
->set_uuid
, 16)==0) {
1503 /* same array, so preserve events and
1505 sb
->events
= refsb
->events
;
1506 /* bugs in 2.6.17 and earlier mean the
1507 * dev_number chosen in Manage must be preserved
1509 if (get_linux_version() >= 2006018)
1510 sb
->dev_number
= refsb
->dev_number
;
1516 if (!get_dev_size(di
->fd
, NULL
, &dsize
)) {
1530 * Calculate the position of the superblock.
1531 * It is always aligned to a 4K boundary and
1532 * depending on minor_version, it can be:
1533 * 0: At least 8K, but less than 12K, from end of device
1534 * 1: At start of device
1535 * 2: 4K from start of device.
1536 * Depending on the array size, we might leave extra space
1538 * Also leave 4K for bad-block log.
1540 array_size
= __le64_to_cpu(sb
->size
);
1541 /* work out how much space we left for a bitmap,
1542 * Add 8 sectors for bad block log */
1543 bm_space
= choose_bm_space(array_size
) + 8;
1545 /* We try to leave 0.1% at the start for reshape
1546 * operations, but limit this to 128Meg (0.1% of 10Gig)
1547 * which is plenty for efficient reshapes
1548 * However we make it at least 2 chunks as one chunk
1549 * is minimum needed for reshape.
1551 headroom
= 128 * 1024 * 2;
1552 while (headroom
<< 10 > array_size
&&
1553 headroom
/2 >= __le32_to_cpu(sb
->chunksize
) * 2)
1556 data_offset
= di
->data_offset
;
1557 switch(st
->minor_version
) {
1561 sb_offset
&= ~(4*2-1);
1562 sb
->super_offset
= __cpu_to_le64(sb_offset
);
1563 if (data_offset
== INVALID_SECTORS
)
1564 sb
->data_offset
= 0;
1565 if (sb_offset
< array_size
+ bm_space
)
1566 bm_space
= sb_offset
- array_size
;
1567 sb
->data_size
= __cpu_to_le64(sb_offset
- bm_space
);
1568 if (bm_space
>= 8) {
1569 sb
->bblog_size
= __cpu_to_le16(8);
1570 sb
->bblog_offset
= __cpu_to_le32((unsigned)-8);
1574 sb
->super_offset
= __cpu_to_le64(0);
1575 if (data_offset
== INVALID_SECTORS
) {
1576 reserved
= bm_space
+ 4*2;
1577 if (reserved
< headroom
)
1578 reserved
= headroom
;
1579 if (reserved
+ array_size
> dsize
)
1580 reserved
= dsize
- array_size
;
1581 /* Try for multiple of 1Meg so it is nicely aligned */
1582 #define ONE_MEG (2*1024)
1583 if (reserved
> ONE_MEG
)
1584 reserved
= (reserved
/ONE_MEG
) * ONE_MEG
;
1586 /* force 4K alignment */
1590 reserved
= data_offset
;
1592 sb
->data_offset
= __cpu_to_le64(reserved
);
1593 sb
->data_size
= __cpu_to_le64(dsize
- reserved
);
1594 if (reserved
>= 16) {
1595 sb
->bblog_size
= __cpu_to_le16(8);
1596 sb
->bblog_offset
= __cpu_to_le32(reserved
-8);
1601 sb
->super_offset
= __cpu_to_le64(4*2);
1602 if (data_offset
== INVALID_SECTORS
) {
1603 if (4*2 + 4*2 + bm_space
+ array_size
1605 bm_space
= dsize
- array_size
1608 reserved
= bm_space
+ 4*2 + 4*2;
1609 if (reserved
< headroom
)
1610 reserved
= headroom
;
1611 if (reserved
+ array_size
> dsize
)
1612 reserved
= dsize
- array_size
;
1613 /* Try for multiple of 1Meg so it is nicely aligned */
1614 #define ONE_MEG (2*1024)
1615 if (reserved
> ONE_MEG
)
1616 reserved
= (reserved
/ONE_MEG
) * ONE_MEG
;
1618 /* force 4K alignment */
1622 reserved
= data_offset
;
1624 sb
->data_offset
= __cpu_to_le64(reserved
);
1625 sb
->data_size
= __cpu_to_le64(dsize
- reserved
);
1626 if (reserved
>= 16+16) {
1627 sb
->bblog_size
= __cpu_to_le16(8);
1628 /* '8' sectors for the bblog, and another '8'
1629 * because we want offset from superblock, not
1632 sb
->bblog_offset
= __cpu_to_le32(reserved
-8-8);
1636 pr_err("Failed to write invalid "
1637 "metadata format 1.%i to %s\n",
1638 st
->minor_version
, di
->devname
);
1643 sb
->sb_csum
= calc_sb_1_csum(sb
);
1644 rv
= store_super1(st
, di
->fd
);
1645 if (rv
== 0 && (__le32_to_cpu(sb
->feature_map
) & 1))
1646 rv
= st
->ss
->write_bitmap(st
, di
->fd
);
1654 pr_err("Failed to write metadata to %s\n",
1661 static int compare_super1(struct supertype
*st
, struct supertype
*tst
)
1665 * 0 same, or first was empty, and second was copied
1666 * 1 second had wrong number
1668 * 3 wrong other info
1670 struct mdp_superblock_1
*first
= st
->sb
;
1671 struct mdp_superblock_1
*second
= tst
->sb
;
1673 if (second
->magic
!= __cpu_to_le32(MD_SB_MAGIC
))
1675 if (second
->major_version
!= __cpu_to_le32(1))
1679 if (posix_memalign((void**)&first
, 4096, SUPER1_SIZE
) != 0) {
1680 pr_err("%s could not allocate superblock\n", __func__
);
1683 memcpy(first
, second
, SUPER1_SIZE
);
1687 if (memcmp(first
->set_uuid
, second
->set_uuid
, 16)!= 0)
1690 if (first
->ctime
!= second
->ctime
||
1691 first
->level
!= second
->level
||
1692 first
->layout
!= second
->layout
||
1693 first
->size
!= second
->size
||
1694 first
->chunksize
!= second
->chunksize
||
1695 first
->raid_disks
!= second
->raid_disks
)
1700 static int load_super1(struct supertype
*st
, int fd
, char *devname
)
1702 unsigned long long dsize
;
1703 unsigned long long sb_offset
;
1704 struct mdp_superblock_1
*super
;
1706 struct bitmap_super_s
*bsb
;
1707 struct misc_dev_info
*misc
;
1708 struct align_fd afd
;
1714 if (st
->ss
== NULL
|| st
->minor_version
== -1) {
1716 struct supertype tst
;
1717 __u64 bestctime
= 0;
1718 /* guess... choose latest ctime */
1719 memset(&tst
, 0, sizeof(tst
));
1721 for (tst
.minor_version
= 0; tst
.minor_version
<= 2 ; tst
.minor_version
++) {
1722 switch(load_super1(&tst
, fd
, devname
)) {
1723 case 0: super
= tst
.sb
;
1724 if (bestvers
== -1 ||
1725 bestctime
< __le64_to_cpu(super
->ctime
)) {
1726 bestvers
= tst
.minor_version
;
1727 bestctime
= __le64_to_cpu(super
->ctime
);
1732 case 1: return 1; /*bad device */
1733 case 2: break; /* bad, try next */
1736 if (bestvers
!= -1) {
1738 tst
.minor_version
= bestvers
;
1740 tst
.max_devs
= MAX_DEVS
;
1741 rv
= load_super1(&tst
, fd
, devname
);
1748 if (!get_dev_size(fd
, devname
, &dsize
))
1754 pr_err("%s is too small for md: size is %llu sectors.\n",
1760 * Calculate the position of the superblock.
1761 * It is always aligned to a 4K boundary and
1762 * depending on minor_version, it can be:
1763 * 0: At least 8K, but less than 12K, from end of device
1764 * 1: At start of device
1765 * 2: 4K from start of device.
1767 switch(st
->minor_version
) {
1771 sb_offset
&= ~(4*2-1);
1783 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL) {
1785 pr_err("Cannot seek to superblock on %s: %s\n",
1786 devname
, strerror(errno
));
1790 if (posix_memalign((void**)&super
, 4096, SUPER1_SIZE
) != 0) {
1791 pr_err("%s could not allocate superblock\n",
1796 if (aread(&afd
, super
, MAX_SB_SIZE
) != MAX_SB_SIZE
) {
1798 pr_err("Cannot read superblock on %s\n",
1804 if (__le32_to_cpu(super
->magic
) != MD_SB_MAGIC
) {
1806 pr_err("No super block found on %s (Expected magic %08x, got %08x)\n",
1807 devname
, MD_SB_MAGIC
, __le32_to_cpu(super
->magic
));
1812 if (__le32_to_cpu(super
->major_version
) != 1) {
1814 pr_err("Cannot interpret superblock on %s - version is %d\n",
1815 devname
, __le32_to_cpu(super
->major_version
));
1819 if (__le64_to_cpu(super
->super_offset
) != sb_offset
) {
1821 pr_err("No superblock found on %s (super_offset is wrong)\n",
1828 bsb
= (struct bitmap_super_s
*)(((char*)super
)+MAX_SB_SIZE
);
1830 misc
= (struct misc_dev_info
*) (((char*)super
)+MAX_SB_SIZE
+BM_SUPER_SIZE
);
1831 misc
->device_size
= dsize
;
1833 /* Now check on the bitmap superblock */
1834 if ((__le32_to_cpu(super
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) == 0)
1836 /* Read the bitmap superblock and make sure it looks
1837 * valid. If it doesn't clear the bit. An --assemble --force
1838 * should get that written out.
1840 locate_bitmap1(st
, fd
);
1841 if (aread(&afd
, bsb
, 512) != 512)
1844 uuid_from_super1(st
, uuid
);
1845 if (__le32_to_cpu(bsb
->magic
) != BITMAP_MAGIC
||
1846 memcmp(bsb
->uuid
, uuid
, 16) != 0)
1851 super
->feature_map
= __cpu_to_le32(__le32_to_cpu(super
->feature_map
)
1852 & ~MD_FEATURE_BITMAP_OFFSET
);
1857 static struct supertype
*match_metadata_desc1(char *arg
)
1859 struct supertype
*st
= xcalloc(1, sizeof(*st
));
1861 st
->container_devnm
[0] = 0;
1863 st
->max_devs
= MAX_DEVS
;
1865 /* leading zeros can be safely ignored. --detail generates them. */
1868 if (strcmp(arg
, "1.0") == 0 ||
1869 strcmp(arg
, "1.00") == 0) {
1870 st
->minor_version
= 0;
1873 if (strcmp(arg
, "1.1") == 0 ||
1874 strcmp(arg
, "1.01") == 0
1876 st
->minor_version
= 1;
1879 if (strcmp(arg
, "1.2") == 0 ||
1880 #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */
1881 strcmp(arg
, "default") == 0 ||
1882 #endif /* DEFAULT_OLD_METADATA */
1883 strcmp(arg
, "1.02") == 0) {
1884 st
->minor_version
= 2;
1887 if (strcmp(arg
, "1") == 0 ||
1888 strcmp(arg
, "default") == 0) {
1889 st
->minor_version
= -1;
1897 /* find available size on device with this devsize, using
1898 * superblock type st, and reserving 'reserve' sectors for
1901 static __u64
_avail_size1(struct supertype
*st
, __u64 devsize
,
1902 unsigned long long data_offset
, int chunksize
)
1904 struct mdp_superblock_1
*super
= st
->sb
;
1910 /* creating: allow suitable space for bitmap */
1911 bmspace
= choose_bm_space(devsize
);
1913 else if (__le32_to_cpu(super
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) {
1914 /* hot-add. allow for actual size of bitmap */
1915 struct bitmap_super_s
*bsb
;
1916 bsb
= (struct bitmap_super_s
*)(((char*)super
)+MAX_SB_SIZE
);
1917 bmspace
= bitmap_sectors(bsb
);
1920 /* Allow space for bad block log */
1921 if (super
&& super
->bblog_size
)
1922 devsize
-= __le16_to_cpu(super
->bblog_size
);
1927 if (st
->minor_version
< 0)
1928 /* not specified, so time to set default */
1929 st
->minor_version
= 2;
1931 if (data_offset
!= INVALID_SECTORS
)
1932 switch(st
->minor_version
) {
1934 return devsize
- data_offset
- 8*2;
1937 return devsize
- data_offset
;
1944 if (super
== NULL
&& st
->minor_version
> 0) {
1945 /* haven't committed to a size yet, so allow some
1946 * slack for space for reshape.
1947 * Limit slack to 128M, but aim for about 0.1%
1949 unsigned long long headroom
= 128*1024*2;
1950 while ((headroom
<< 10) > devsize
&&
1952 headroom
/ 2 >= ((unsigned)chunksize
*2)*2))
1954 devsize
-= headroom
;
1956 switch(st
->minor_version
) {
1959 return ((devsize
- 8*2 ) & ~(4*2-1));
1961 /* at start, 4K for superblock and possible bitmap */
1962 return devsize
- 4*2;
1964 /* 4k from start, 4K for superblock and possible bitmap */
1965 return devsize
- (4+4)*2;
1969 static __u64
avail_size1(struct supertype
*st
, __u64 devsize
,
1970 unsigned long long data_offset
)
1972 return _avail_size1(st
, devsize
, data_offset
, 0);
1976 add_internal_bitmap1(struct supertype
*st
,
1977 int *chunkp
, int delay
, int write_behind
,
1978 unsigned long long size
,
1979 int may_change
, int major
)
1982 * If not may_change, then this is a 'Grow' without sysfs support for
1983 * bitmaps, and the bitmap must fit after the superblock at 1K offset.
1984 * If may_change, then this is create or a Grow with sysfs syupport,
1985 * and we can put the bitmap wherever we like.
1987 * size is in sectors, chunk is in bytes !!!
1990 unsigned long long bits
;
1991 unsigned long long max_bits
;
1992 unsigned long long min_chunk
;
1994 long bbl_offset
, bbl_size
;
1995 unsigned long long chunk
= *chunkp
;
1998 struct mdp_superblock_1
*sb
= st
->sb
;
1999 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
2003 if (__le64_to_cpu(sb
->data_size
) == 0)
2004 /* Must be creating the array, else data_size would be non-zero */
2006 switch(st
->minor_version
) {
2008 /* either 3K after the superblock (when hot-add),
2009 * or some amount of space before.
2012 /* We are creating array, so we *know* how much room has
2016 room
= choose_bm_space(__le64_to_cpu(sb
->size
));
2019 room
= __le64_to_cpu(sb
->super_offset
)
2020 - __le64_to_cpu(sb
->data_offset
)
2021 - __le64_to_cpu(sb
->data_size
);
2022 bbl_size
= __le16_to_cpu(sb
->bblog_size
);
2025 bbl_offset
= (__s32
)__le32_to_cpu(sb
->bblog_offset
);
2026 if (bbl_size
< -bbl_offset
)
2027 bbl_size
= -bbl_offset
;
2029 if (!may_change
|| (room
< 3*2 &&
2030 __le32_to_cpu(sb
->max_dev
) <= 384)) {
2035 offset
= 0; /* means movable offset */
2040 case 2: /* between superblock and data */
2043 room
= choose_bm_space(__le64_to_cpu(sb
->size
));
2046 room
= __le64_to_cpu(sb
->data_offset
)
2047 - __le64_to_cpu(sb
->super_offset
);
2048 bbl_size
= __le16_to_cpu(sb
->bblog_size
);
2050 room
= __le32_to_cpu(sb
->bblog_offset
) + bbl_size
;
2055 room
-= 2; /* Leave 1K for superblock */
2059 room
-= 4*2; /* leave 4K for superblock */
2069 if (chunk
== UnSet
&& room
> 128*2)
2070 /* Limit to 128K of bitmap when chunk size not requested */
2073 max_bits
= (room
* 512 - sizeof(bitmap_super_t
)) * 8;
2075 min_chunk
= 4096; /* sub-page chunks don't work yet.. */
2076 bits
= (size
*512)/min_chunk
+1;
2077 while (bits
> max_bits
) {
2081 if (chunk
== UnSet
) {
2082 /* For practical purpose, 64Meg is a good
2083 * default chunk size for internal bitmaps.
2086 if (chunk
< 64*1024*1024)
2087 chunk
= 64*1024*1024;
2088 } else if (chunk
< min_chunk
)
2089 return 0; /* chunk size too small */
2090 if (chunk
== 0) /* rounding problem */
2094 /* start bitmap on a 4K boundary with enough space for
2097 bits
= (size
*512) / chunk
+ 1;
2098 room
= ((bits
+7)/8 + sizeof(bitmap_super_t
) +4095)/4096;
2099 room
*= 8; /* convert 4K blocks to sectors */
2100 offset
= -room
- bbl_size
;
2103 sb
->bitmap_offset
= (int32_t)__cpu_to_le32(offset
);
2105 sb
->feature_map
= __cpu_to_le32(__le32_to_cpu(sb
->feature_map
)
2106 | MD_FEATURE_BITMAP_OFFSET
);
2107 memset(bms
, 0, sizeof(*bms
));
2108 bms
->magic
= __cpu_to_le32(BITMAP_MAGIC
);
2109 bms
->version
= __cpu_to_le32(major
);
2110 uuid_from_super1(st
, uuid
);
2111 memcpy(bms
->uuid
, uuid
, 16);
2112 bms
->chunksize
= __cpu_to_le32(chunk
);
2113 bms
->daemon_sleep
= __cpu_to_le32(delay
);
2114 bms
->sync_size
= __cpu_to_le64(size
);
2115 bms
->write_behind
= __cpu_to_le32(write_behind
);
2121 static void locate_bitmap1(struct supertype
*st
, int fd
)
2123 unsigned long long offset
;
2124 struct mdp_superblock_1
*sb
;
2128 if (st
->ss
->load_super(st
, fd
, NULL
))
2129 return; /* no error I hope... */
2134 offset
= __le64_to_cpu(sb
->super_offset
);
2135 offset
+= (int32_t) __le32_to_cpu(sb
->bitmap_offset
);
2138 lseek64(fd
, offset
<<9, 0);
2141 static int write_bitmap1(struct supertype
*st
, int fd
)
2143 struct mdp_superblock_1
*sb
= st
->sb
;
2144 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
)+MAX_SB_SIZE
);
2148 struct align_fd afd
;
2152 locate_bitmap1(st
, fd
);
2154 if (posix_memalign(&buf
, 4096, 4096))
2157 memset(buf
, 0xff, 4096);
2158 memcpy(buf
, (char *)bms
, sizeof(bitmap_super_t
));
2160 towrite
= __le64_to_cpu(bms
->sync_size
) / (__le32_to_cpu(bms
->chunksize
)>>9);
2161 towrite
= (towrite
+7) >> 3; /* bits to bytes */
2162 towrite
+= sizeof(bitmap_super_t
);
2163 towrite
= ROUND_UP(towrite
, 512);
2164 while (towrite
> 0) {
2168 n
= awrite(&afd
, buf
, n
);
2173 memset(buf
, 0xff, 4096);
2183 static void free_super1(struct supertype
*st
)
2188 struct devinfo
*di
= st
->info
;
2189 st
->info
= di
->next
;
2198 static int validate_geometry1(struct supertype
*st
, int level
,
2199 int layout
, int raiddisks
,
2200 int *chunk
, unsigned long long size
,
2201 unsigned long long data_offset
,
2202 char *subdev
, unsigned long long *freesize
,
2205 unsigned long long ldsize
;
2208 if (level
== LEVEL_CONTAINER
) {
2210 pr_err("1.x metadata does not support containers\n");
2213 if (chunk
&& *chunk
== UnSet
)
2214 *chunk
= DEFAULT_CHUNK
;
2219 fd
= open(subdev
, O_RDONLY
|O_EXCL
, 0);
2222 pr_err("super1.x cannot open %s: %s\n",
2223 subdev
, strerror(errno
));
2227 if (!get_dev_size(fd
, subdev
, &ldsize
)) {
2233 *freesize
= _avail_size1(st
, ldsize
>> 9, data_offset
, *chunk
);
2236 #endif /* MDASSEMBLE */
2238 struct superswitch super1
= {
2240 .examine_super
= examine_super1
,
2241 .brief_examine_super
= brief_examine_super1
,
2242 .export_examine_super
= export_examine_super1
,
2243 .detail_super
= detail_super1
,
2244 .brief_detail_super
= brief_detail_super1
,
2245 .export_detail_super
= export_detail_super1
,
2246 .write_init_super
= write_init_super1
,
2247 .validate_geometry
= validate_geometry1
,
2248 .add_to_super
= add_to_super1
,
2249 .examine_badblocks
= examine_badblocks_super1
,
2250 .copy_metadata
= copy_metadata1
,
2252 .match_home
= match_home1
,
2253 .uuid_from_super
= uuid_from_super1
,
2254 .getinfo_super
= getinfo_super1
,
2255 .container_content
= container_content1
,
2256 .update_super
= update_super1
,
2257 .init_super
= init_super1
,
2258 .store_super
= store_super1
,
2259 .compare_super
= compare_super1
,
2260 .load_super
= load_super1
,
2261 .match_metadata_desc
= match_metadata_desc1
,
2262 .avail_size
= avail_size1
,
2263 .add_internal_bitmap
= add_internal_bitmap1
,
2264 .locate_bitmap
= locate_bitmap1
,
2265 .write_bitmap
= write_bitmap1
,
2266 .free_super
= free_super1
,
2267 #if __BYTE_ORDER == BIG_ENDIAN