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];
231 static int aread(struct align_fd
*afd
, void *buf
, int len
)
234 * On devices with a 4K sector size, we need to read
235 * the full sector and copy relevant bits into
244 if (!bsize
|| bsize
> 4096 || len
> 4096) {
246 fprintf(stderr
, "WARNING - aread() called with invalid block size\n");
249 b
= ROUND_UP_PTR((char *)abuf
, 4096);
251 for (iosize
= 0; iosize
< len
; iosize
+= bsize
)
253 n
= read(afd
->fd
, b
, iosize
);
256 lseek(afd
->fd
, len
- n
, 1);
263 static int awrite(struct align_fd
*afd
, void *buf
, int len
)
266 * On devices with a 4K sector size, we need to write
267 * the full sector. We pre-read if the sector is larger
269 * The address must be sector-aligned.
276 if (!bsize
|| bsize
> 4096 || len
> 4096) {
278 fprintf(stderr
, "WARNING - awrite() called with invalid block size\n");
281 b
= ROUND_UP_PTR((char *)abuf
, 4096);
283 for (iosize
= 0; iosize
< len
; iosize
+= bsize
)
287 n
= read(afd
->fd
, b
, iosize
);
290 lseek(afd
->fd
, -n
, 1);
294 n
= write(afd
->fd
, b
, iosize
);
297 lseek(afd
->fd
, len
- n
, 1);
301 static inline unsigned int choose_ppl_space(int chunk
)
303 return (PPL_HEADER_SIZE
>> 9) + (chunk
> 128*2 ? chunk
: 128*2);
306 static void examine_super1(struct supertype
*st
, char *homehost
)
308 struct mdp_superblock_1
*sb
= st
->sb
;
309 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
)+MAX_SB_SIZE
);
316 int l
= homehost
? strlen(homehost
) : 0;
318 unsigned long long sb_offset
;
321 printf(" Magic : %08x\n", __le32_to_cpu(sb
->magic
));
322 printf(" Version : 1");
323 sb_offset
= __le64_to_cpu(sb
->super_offset
);
326 else if (sb_offset
<= 8)
330 printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb
->feature_map
));
331 printf(" Array UUID : ");
332 for (i
=0; i
<16; i
++) {
333 if ((i
&3)==0 && i
!= 0) printf(":");
334 printf("%02x", sb
->set_uuid
[i
]);
337 printf(" Name : %.32s", sb
->set_name
);
338 if (l
> 0 && l
< 32 &&
339 sb
->set_name
[l
] == ':' &&
340 strncmp(sb
->set_name
, homehost
, l
) == 0)
341 printf(" (local to host %s)", homehost
);
343 if (bms
->nodes
> 0 &&
344 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
345 printf(" Cluster Name : %-64s\n", bms
->cluster_name
);
346 atime
= __le64_to_cpu(sb
->ctime
) & 0xFFFFFFFFFFULL
;
347 printf(" Creation Time : %.24s\n", ctime(&atime
));
348 c
=map_num(pers
, __le32_to_cpu(sb
->level
));
349 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
350 printf(" Raid Devices : %d\n", __le32_to_cpu(sb
->raid_disks
));
352 printf(" Avail Dev Size : %llu%s\n",
353 (unsigned long long)__le64_to_cpu(sb
->data_size
),
354 human_size(__le64_to_cpu(sb
->data_size
)<<9));
355 if (__le32_to_cpu(sb
->level
) > 0) {
356 int ddsks
= 0, ddsks_denom
= 1;
357 switch(__le32_to_cpu(sb
->level
)) {
358 case 1: ddsks
=1;break;
360 case 5: ddsks
= __le32_to_cpu(sb
->raid_disks
)-1; break;
361 case 6: ddsks
= __le32_to_cpu(sb
->raid_disks
)-2; break;
363 layout
= __le32_to_cpu(sb
->layout
);
364 ddsks
= __le32_to_cpu(sb
->raid_disks
);
365 ddsks_denom
= (layout
&255) * ((layout
>>8)&255);
368 long long asize
= __le64_to_cpu(sb
->size
);
369 asize
= (asize
<< 9) * ddsks
/ ddsks_denom
;
370 printf(" Array Size : %llu%s\n",
371 asize
>> 10, human_size(asize
));
373 if (sb
->size
!= sb
->data_size
)
374 printf(" Used Dev Size : %llu%s\n",
375 (unsigned long long)__le64_to_cpu(sb
->size
),
376 human_size(__le64_to_cpu(sb
->size
)<<9));
379 printf(" Data Offset : %llu sectors\n",
380 (unsigned long long)__le64_to_cpu(sb
->data_offset
));
381 if (sb
->new_offset
&&
382 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_NEW_OFFSET
)) {
383 unsigned long long offset
= __le64_to_cpu(sb
->data_offset
);
384 offset
+= (signed)(int32_t)__le32_to_cpu(sb
->new_offset
);
385 printf(" New Offset : %llu sectors\n", offset
);
387 printf(" Super Offset : %llu sectors\n",
388 (unsigned long long)__le64_to_cpu(sb
->super_offset
));
389 if (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_RECOVERY_OFFSET
)
390 printf("Recovery Offset : %llu sectors\n",
391 (unsigned long long)__le64_to_cpu(sb
->recovery_offset
));
393 st
->ss
->getinfo_super(st
, &info
, NULL
);
394 if (info
.space_after
!= 1 &&
395 !(__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_NEW_OFFSET
))
396 printf(" Unused Space : before=%llu sectors, after=%llu sectors\n",
397 info
.space_before
, info
.space_after
);
399 printf(" State : %s\n",
400 (__le64_to_cpu(sb
->resync_offset
)+1)? "active":"clean");
401 printf(" Device UUID : ");
402 for (i
=0; i
<16; i
++) {
403 if ((i
&3)==0 && i
!= 0)
405 printf("%02x", sb
->device_uuid
[i
]);
409 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
410 printf("Internal Bitmap : %ld sectors from superblock\n",
411 (long)(int32_t)__le32_to_cpu(sb
->bitmap_offset
));
412 } else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_PPL
)) {
413 printf(" PPL : %u sectors at offset %d sectors from superblock\n",
414 __le16_to_cpu(sb
->ppl
.size
),
415 __le16_to_cpu(sb
->ppl
.offset
));
417 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
)) {
418 printf(" Reshape pos'n : %llu%s\n", (unsigned long long)
419 __le64_to_cpu(sb
->reshape_position
)/2,
420 human_size(__le64_to_cpu(sb
->reshape_position
)<<9));
421 if (__le32_to_cpu(sb
->delta_disks
)) {
422 printf(" Delta Devices : %d",
423 __le32_to_cpu(sb
->delta_disks
));
424 printf(" (%d->%d)\n",
425 __le32_to_cpu(sb
->raid_disks
) -
426 __le32_to_cpu(sb
->delta_disks
),
427 __le32_to_cpu(sb
->raid_disks
));
428 if ((int)__le32_to_cpu(sb
->delta_disks
) < 0)
429 delta_extra
= -__le32_to_cpu(sb
->delta_disks
);
431 if (__le32_to_cpu(sb
->new_level
) != __le32_to_cpu(sb
->level
)) {
432 c
= map_num(pers
, __le32_to_cpu(sb
->new_level
));
433 printf(" New Level : %s\n", c
?c
:"-unknown-");
435 if (__le32_to_cpu(sb
->new_layout
) !=
436 __le32_to_cpu(sb
->layout
)) {
437 if (__le32_to_cpu(sb
->level
) == 5) {
438 c
= map_num(r5layout
,
439 __le32_to_cpu(sb
->new_layout
));
440 printf(" New Layout : %s\n", c
?c
:"-unknown-");
442 if (__le32_to_cpu(sb
->level
) == 6) {
443 c
= map_num(r6layout
,
444 __le32_to_cpu(sb
->new_layout
));
445 printf(" New Layout : %s\n", c
?c
:"-unknown-");
447 if (__le32_to_cpu(sb
->level
) == 10) {
448 printf(" New Layout :");
449 print_r10_layout(__le32_to_cpu(sb
->new_layout
));
453 if (__le32_to_cpu(sb
->new_chunk
) !=
454 __le32_to_cpu(sb
->chunksize
))
455 printf(" New Chunksize : %dK\n",
456 __le32_to_cpu(sb
->new_chunk
)/2);
461 if (sb
->devflags
& WriteMostly1
)
462 printf(" write-mostly");
463 if (sb
->devflags
& FailFast1
)
468 atime
= __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
;
469 printf(" Update Time : %.24s\n", ctime(&atime
));
471 if (sb
->bblog_size
&& sb
->bblog_offset
) {
472 printf(" Bad Block Log : %d entries available at offset %ld sectors",
473 __le16_to_cpu(sb
->bblog_size
)*512/8,
474 (long)(int32_t)__le32_to_cpu(sb
->bblog_offset
));
475 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
476 printf(" - bad blocks present.");
480 if (calc_sb_1_csum(sb
) == sb
->sb_csum
)
481 printf(" Checksum : %x - correct\n",
482 __le32_to_cpu(sb
->sb_csum
));
484 printf(" Checksum : %x - expected %x\n",
485 __le32_to_cpu(sb
->sb_csum
),
486 __le32_to_cpu(calc_sb_1_csum(sb
)));
487 printf(" Events : %llu\n",
488 (unsigned long long)__le64_to_cpu(sb
->events
));
490 if (__le32_to_cpu(sb
->level
) == 5) {
491 c
= map_num(r5layout
, __le32_to_cpu(sb
->layout
));
492 printf(" Layout : %s\n", c
?c
:"-unknown-");
494 if (__le32_to_cpu(sb
->level
) == 6) {
495 c
= map_num(r6layout
, __le32_to_cpu(sb
->layout
));
496 printf(" Layout : %s\n", c
?c
:"-unknown-");
498 if (__le32_to_cpu(sb
->level
) == 10) {
499 int lo
= __le32_to_cpu(sb
->layout
);
501 print_r10_layout(lo
);
504 switch(__le32_to_cpu(sb
->level
)) {
510 printf(" Chunk Size : %dK\n",
511 __le32_to_cpu(sb
->chunksize
)/2);
514 printf(" Rounding : %dK\n",
515 __le32_to_cpu(sb
->chunksize
)/2);
522 /* This turns out to just be confusing */
523 printf(" Array Slot : %d (", __le32_to_cpu(sb
->dev_number
));
524 for (i
= __le32_to_cpu(sb
->max_dev
); i
> 0 ; i
--)
525 if (__le16_to_cpu(sb
->dev_roles
[i
-1]) != MD_DISK_ROLE_SPARE
)
527 for (d
= 0; d
< i
; d
++) {
528 int role
= __le16_to_cpu(sb
->dev_roles
[d
]);
531 if (role
== MD_DISK_ROLE_SPARE
)
534 if(role
== MD_DISK_ROLE_FAULTY
)
541 printf(" Device Role : ");
542 role
= role_from_sb(sb
);
543 if (role
>= MD_DISK_ROLE_FAULTY
)
545 else if (role
== MD_DISK_ROLE_JOURNAL
)
547 else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_REPLACEMENT
))
548 printf("Replacement device %d\n", role
);
550 printf("Active device %d\n", role
);
552 printf(" Array State : ");
553 for (d
= 0; d
< __le32_to_cpu(sb
->raid_disks
) + delta_extra
; d
++) {
556 for (i
= 0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
557 unsigned int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
571 /* This is confusing too */
573 for (i
= 0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
574 int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
575 if (role
== MD_DISK_ROLE_FAULTY
)
579 printf(" %d failed", faulty
);
581 printf(" ('A' == active, '.' == missing, 'R' == replacing)");
585 static void brief_examine_super1(struct supertype
*st
, int verbose
)
587 struct mdp_superblock_1
*sb
= st
->sb
;
589 unsigned long long sb_offset
;
591 char *c
= map_num(pers
, __le32_to_cpu(sb
->level
));
593 nm
= strchr(sb
->set_name
, ':');
596 else if (sb
->set_name
[0])
608 printf(" level=%s", c
);
609 sb_offset
= __le64_to_cpu(sb
->super_offset
);
611 printf(" metadata=1.1 ");
612 else if (sb_offset
<= 8)
613 printf(" metadata=1.2 ");
615 printf(" metadata=1.0 ");
617 printf("num-devices=%d ", __le32_to_cpu(sb
->raid_disks
));
619 for (i
= 0; i
< 16; i
++) {
620 if ((i
&3)==0 && i
!= 0)
622 printf("%02x", sb
->set_uuid
[i
]);
624 if (sb
->set_name
[0]) {
626 print_quoted(sb
->set_name
);
631 static void export_examine_super1(struct supertype
*st
)
633 struct mdp_superblock_1
*sb
= st
->sb
;
638 printf("MD_LEVEL=%s\n", map_num(pers
, __le32_to_cpu(sb
->level
)));
639 printf("MD_DEVICES=%d\n", __le32_to_cpu(sb
->raid_disks
));
640 for (i
= 0; i
< 32; i
++)
641 if (sb
->set_name
[i
] == '\n' || sb
->set_name
[i
] == '\0') {
646 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
647 if (__le32_to_cpu(sb
->level
) > 0) {
648 int ddsks
= 0, ddsks_denom
= 1;
649 switch(__le32_to_cpu(sb
->level
)) {
655 ddsks
= __le32_to_cpu(sb
->raid_disks
)-1;
658 ddsks
= __le32_to_cpu(sb
->raid_disks
)-2;
661 layout
= __le32_to_cpu(sb
->layout
);
662 ddsks
= __le32_to_cpu(sb
->raid_disks
);
663 ddsks_denom
= (layout
&255) * ((layout
>>8)&255);
666 long long asize
= __le64_to_cpu(sb
->size
);
667 asize
= (asize
<< 9) * ddsks
/ ddsks_denom
;
668 printf("MD_ARRAY_SIZE=%s\n",
669 human_size_brief(asize
, JEDEC
));
673 for (i
= 0; i
< 16; i
++) {
674 if ((i
&3) == 0 && i
!= 0)
676 printf("%02x", sb
->set_uuid
[i
]);
679 printf("MD_UPDATE_TIME=%llu\n",
680 __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
);
681 printf("MD_DEV_UUID=");
682 for (i
= 0; i
< 16; i
++) {
683 if ((i
&3) == 0 && i
!= 0)
685 printf("%02x", sb
->device_uuid
[i
]);
688 printf("MD_EVENTS=%llu\n",
689 (unsigned long long)__le64_to_cpu(sb
->events
));
692 static int copy_metadata1(struct supertype
*st
, int from
, int to
)
694 /* Read superblock. If it looks good, write it out.
695 * Then if a bitmap is present, copy that.
696 * And if a bad-block-list is present, copy that too.
699 unsigned long long dsize
, sb_offset
;
700 const int bufsize
= 4*1024;
701 struct mdp_superblock_1 super
, *sb
;
703 if (posix_memalign(&buf
, 4096, bufsize
) != 0)
706 if (!get_dev_size(from
, NULL
, &dsize
))
712 switch(st
->minor_version
) {
716 sb_offset
&= ~(4*2-1);
728 if (lseek64(from
, sb_offset
<< 9, 0) < 0LL)
730 if (read(from
, buf
, bufsize
) != bufsize
)
734 super
= *sb
; // save most of sb for when we reuse buf
736 if (__le32_to_cpu(super
.magic
) != MD_SB_MAGIC
||
737 __le32_to_cpu(super
.major_version
) != 1 ||
738 __le64_to_cpu(super
.super_offset
) != sb_offset
||
739 calc_sb_1_csum(sb
) != super
.sb_csum
)
742 if (lseek64(to
, sb_offset
<< 9, 0) < 0LL)
744 if (write(to
, buf
, bufsize
) != bufsize
)
747 if (super
.feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
748 unsigned long long bitmap_offset
= sb_offset
;
749 int bytes
= 4096; // just an estimate.
751 struct align_fd afrom
, ato
;
753 init_afd(&afrom
, from
);
756 bitmap_offset
+= (int32_t)__le32_to_cpu(super
.bitmap_offset
);
758 if (lseek64(from
, bitmap_offset
<<9, 0) < 0)
760 if (lseek64(to
, bitmap_offset
<<9, 0) < 0)
763 for (written
= 0; written
< bytes
; ) {
764 int n
= bytes
- written
;
767 if (aread(&afrom
, buf
, n
) != n
)
770 /* have the header, can calculate
771 * correct bitmap bytes */
774 bytes
= calc_bitmap_size(bms
, 512);
778 if (awrite(&ato
, buf
, n
) != n
)
784 if (super
.bblog_size
!= 0 &&
785 __le16_to_cpu(super
.bblog_size
) <= 100 &&
786 super
.bblog_offset
!= 0 &&
787 (super
.feature_map
& __le32_to_cpu(MD_FEATURE_BAD_BLOCKS
))) {
788 /* There is a bad block log */
789 unsigned long long bb_offset
= sb_offset
;
790 int bytes
= __le16_to_cpu(super
.bblog_size
) * 512;
792 struct align_fd afrom
, ato
;
794 init_afd(&afrom
, from
);
797 bb_offset
+= (int32_t)__le32_to_cpu(super
.bblog_offset
);
799 if (lseek64(from
, bb_offset
<<9, 0) < 0)
801 if (lseek64(to
, bb_offset
<<9, 0) < 0)
804 for (written
= 0; written
< bytes
; ) {
805 int n
= bytes
- written
;
808 if (aread(&afrom
, buf
, n
) != n
)
811 if (awrite(&ato
, buf
, n
) != n
)
825 static void detail_super1(struct supertype
*st
, char *homehost
)
827 struct mdp_superblock_1
*sb
= st
->sb
;
828 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
830 int l
= homehost
? strlen(homehost
) : 0;
832 printf(" Name : %.32s", sb
->set_name
);
833 if (l
> 0 && l
< 32 && sb
->set_name
[l
] == ':' &&
834 strncmp(sb
->set_name
, homehost
, l
) == 0)
835 printf(" (local to host %s)", homehost
);
836 if (bms
->nodes
> 0 &&
837 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
838 printf("\n Cluster Name : %-64s", bms
->cluster_name
);
839 printf("\n UUID : ");
840 for (i
= 0; i
< 16; i
++) {
841 if ((i
&3) == 0 && i
!= 0)
843 printf("%02x", sb
->set_uuid
[i
]);
845 printf("\n Events : %llu\n\n",
846 (unsigned long long)__le64_to_cpu(sb
->events
));
849 static void brief_detail_super1(struct supertype
*st
)
851 struct mdp_superblock_1
*sb
= st
->sb
;
854 if (sb
->set_name
[0]) {
856 print_quoted(sb
->set_name
);
859 for (i
= 0; i
< 16; i
++) {
860 if ((i
& 3) == 0 && i
!= 0)
862 printf("%02x", sb
->set_uuid
[i
]);
866 static void export_detail_super1(struct supertype
*st
)
868 struct mdp_superblock_1
*sb
= st
->sb
;
872 for (i
= 0; i
< 32; i
++)
873 if (sb
->set_name
[i
] == '\n' || sb
->set_name
[i
] == '\0') {
878 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
881 static int examine_badblocks_super1(struct supertype
*st
, int fd
, char *devname
)
883 struct mdp_superblock_1
*sb
= st
->sb
;
884 unsigned long long offset
;
889 if (!sb
->bblog_size
|| __le16_to_cpu(sb
->bblog_size
) > 100 ||
891 printf("No bad-blocks list configured on %s\n", devname
);
894 if ((sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
)) == 0) {
895 printf("Bad-blocks list is empty in %s\n", devname
);
899 size
= __le16_to_cpu(sb
->bblog_size
)* 512;
900 if (posix_memalign((void**)&bbl
, 4096, size
) != 0) {
901 pr_err("could not allocate badblocks list\n");
904 offset
= __le64_to_cpu(sb
->super_offset
) +
905 (int)__le32_to_cpu(sb
->bblog_offset
);
907 if (lseek64(fd
, offset
, 0) < 0) {
908 pr_err("Cannot seek to bad-blocks list\n");
911 if (read(fd
, bbl
, size
) != size
) {
912 pr_err("Cannot read bad-blocks list\n");
915 /* 64bits per entry. 10 bits is block-count, 54 bits is block
916 * offset. Blocks are sectors unless bblog->shift makes them bigger
919 printf("Bad-blocks on %s:\n", devname
);
920 for (i
= 0; i
< size
/8; i
++, bbp
++) {
921 __u64 bb
= __le64_to_cpu(*bbp
);
922 int count
= bb
& 0x3ff;
923 unsigned long long sector
= bb
>> 10;
928 sector
<<= sb
->bblog_shift
;
929 count
<<= sb
->bblog_shift
;
931 printf("%20llu for %d sectors\n", sector
, count
);
936 static int match_home1(struct supertype
*st
, char *homehost
)
938 struct mdp_superblock_1
*sb
= st
->sb
;
939 int l
= homehost
? strlen(homehost
) : 0;
941 return (l
> 0 && l
< 32 && sb
->set_name
[l
] == ':' &&
942 strncmp(sb
->set_name
, homehost
, l
) == 0);
945 static void uuid_from_super1(struct supertype
*st
, int uuid
[4])
947 struct mdp_superblock_1
*super
= st
->sb
;
948 char *cuuid
= (char*)uuid
;
950 for (i
= 0; i
< 16; i
++)
951 cuuid
[i
] = super
->set_uuid
[i
];
954 static void getinfo_super1(struct supertype
*st
, struct mdinfo
*info
, char *map
)
956 struct mdp_superblock_1
*sb
= st
->sb
;
957 struct bitmap_super_s
*bsb
= (void*)(((char*)sb
)+MAX_SB_SIZE
);
958 struct misc_dev_info
*misc
=
959 (void*)(((char*)sb
)+MAX_SB_SIZE
+BM_SUPER_SIZE
);
963 unsigned int map_disks
= info
->array
.raid_disks
;
964 unsigned long long super_offset
;
965 unsigned long long data_size
;
967 memset(info
, 0, sizeof(*info
));
968 info
->array
.major_version
= 1;
969 info
->array
.minor_version
= st
->minor_version
;
970 info
->array
.patch_version
= 0;
971 info
->array
.raid_disks
= __le32_to_cpu(sb
->raid_disks
);
972 info
->array
.level
= __le32_to_cpu(sb
->level
);
973 info
->array
.layout
= __le32_to_cpu(sb
->layout
);
974 info
->array
.md_minor
= -1;
975 info
->array
.ctime
= __le64_to_cpu(sb
->ctime
);
976 info
->array
.utime
= __le64_to_cpu(sb
->utime
);
977 info
->array
.chunk_size
= __le32_to_cpu(sb
->chunksize
)*512;
979 (__le64_to_cpu(sb
->resync_offset
) == MaxSector
) ? 1 : 0;
980 if (__le32_to_cpu(bsb
->nodes
) > 1)
981 info
->array
.state
|= (1 << MD_SB_CLUSTERED
);
983 super_offset
= __le64_to_cpu(sb
->super_offset
);
984 info
->data_offset
= __le64_to_cpu(sb
->data_offset
);
985 info
->component_size
= __le64_to_cpu(sb
->size
);
986 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
987 info
->bitmap_offset
= (int32_t)__le32_to_cpu(sb
->bitmap_offset
);
988 } else if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_PPL
)) {
989 info
->ppl_offset
= __le16_to_cpu(sb
->ppl
.offset
);
990 info
->ppl_size
= __le16_to_cpu(sb
->ppl
.size
);
991 info
->ppl_sector
= super_offset
+ info
->ppl_offset
;
994 info
->disk
.major
= 0;
995 info
->disk
.minor
= 0;
996 info
->disk
.number
= __le32_to_cpu(sb
->dev_number
);
997 if (__le32_to_cpu(sb
->dev_number
) >= __le32_to_cpu(sb
->max_dev
) ||
998 __le32_to_cpu(sb
->dev_number
) >= MAX_DEVS
)
999 role
= MD_DISK_ROLE_FAULTY
;
1001 role
= __le16_to_cpu(sb
->dev_roles
[__le32_to_cpu(sb
->dev_number
)]);
1003 if (info
->array
.level
<= 0)
1004 data_size
= __le64_to_cpu(sb
->data_size
);
1006 data_size
= __le64_to_cpu(sb
->size
);
1007 if (info
->data_offset
< super_offset
) {
1008 unsigned long long end
;
1009 info
->space_before
= info
->data_offset
;
1012 if (sb
->bblog_offset
&& sb
->bblog_size
) {
1013 unsigned long long bboffset
= super_offset
;
1014 bboffset
+= (int32_t)__le32_to_cpu(sb
->bblog_offset
);
1019 if (super_offset
+ info
->bitmap_offset
+ info
->ppl_offset
< end
)
1020 end
= super_offset
+ info
->bitmap_offset
+
1023 if (info
->data_offset
+ data_size
< end
)
1024 info
->space_after
= end
- data_size
- info
->data_offset
;
1026 info
->space_after
= 0;
1028 unsigned long long earliest
;
1029 earliest
= super_offset
+ (32+4)*2; /* match kernel */
1030 if (info
->bitmap_offset
> 0) {
1031 unsigned long long bmend
= info
->bitmap_offset
;
1032 unsigned long long size
= calc_bitmap_size(bsb
, 4096);
1035 if (bmend
> earliest
)
1037 } else if (info
->ppl_offset
> 0) {
1038 unsigned long long pplend
;
1040 pplend
= info
->ppl_offset
+ info
->ppl_size
;
1041 if (pplend
> earliest
)
1044 if (sb
->bblog_offset
&& sb
->bblog_size
) {
1045 unsigned long long bbend
= super_offset
;
1046 bbend
+= (int32_t)__le32_to_cpu(sb
->bblog_offset
);
1047 bbend
+= __le16_to_cpu(sb
->bblog_size
);
1048 if (bbend
> earliest
)
1051 if (earliest
< info
->data_offset
)
1052 info
->space_before
= info
->data_offset
- earliest
;
1054 info
->space_before
= 0;
1055 info
->space_after
= misc
->device_size
- data_size
-
1058 if (info
->space_before
== 0 && info
->space_after
== 0) {
1059 /* It will look like we don't support data_offset changes,
1060 * be we do - it's just that there is no room.
1061 * A change that reduced the number of devices should
1062 * still be allowed, so set the otherwise useless value of '1'
1064 info
->space_after
= 1;
1067 info
->disk
.raid_disk
= -1;
1069 case MD_DISK_ROLE_SPARE
:
1070 /* spare: not active, not sync, not faulty */
1071 info
->disk
.state
= 0;
1073 case MD_DISK_ROLE_FAULTY
:
1074 info
->disk
.state
= (1 << MD_DISK_FAULTY
); /* faulty */
1076 case MD_DISK_ROLE_JOURNAL
:
1077 info
->disk
.state
= (1 << MD_DISK_JOURNAL
);
1078 info
->disk
.raid_disk
= role
;
1079 /* journal uses all 4kB blocks*/
1080 info
->space_after
= (misc
->device_size
- info
->data_offset
) % 8;
1083 info
->disk
.state
= 6; /* active and in sync */
1084 info
->disk
.raid_disk
= role
;
1086 if (sb
->devflags
& WriteMostly1
)
1087 info
->disk
.state
|= (1 << MD_DISK_WRITEMOSTLY
);
1088 if (sb
->devflags
& FailFast1
)
1089 info
->disk
.state
|= (1 << MD_DISK_FAILFAST
);
1090 info
->events
= __le64_to_cpu(sb
->events
);
1091 sprintf(info
->text_version
, "1.%d", st
->minor_version
);
1092 info
->safe_mode_delay
= 200;
1094 memcpy(info
->uuid
, sb
->set_uuid
, 16);
1096 strncpy(info
->name
, sb
->set_name
, 32);
1099 if ((__le32_to_cpu(sb
->feature_map
)&MD_FEATURE_REPLACEMENT
)) {
1100 info
->disk
.state
&= ~(1 << MD_DISK_SYNC
);
1101 info
->disk
.state
|= 1 << MD_DISK_REPLACEMENT
;
1104 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET
))
1105 info
->recovery_start
= __le32_to_cpu(sb
->recovery_offset
);
1107 info
->recovery_start
= MaxSector
;
1109 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
)) {
1110 info
->reshape_active
= 1;
1111 if ((sb
->feature_map
& __le32_to_cpu(MD_FEATURE_NEW_OFFSET
)) &&
1112 sb
->new_offset
!= 0)
1113 info
->reshape_active
|= RESHAPE_NO_BACKUP
;
1114 info
->reshape_progress
= __le64_to_cpu(sb
->reshape_position
);
1115 info
->new_level
= __le32_to_cpu(sb
->new_level
);
1116 info
->delta_disks
= __le32_to_cpu(sb
->delta_disks
);
1117 info
->new_layout
= __le32_to_cpu(sb
->new_layout
);
1118 info
->new_chunk
= __le32_to_cpu(sb
->new_chunk
)<<9;
1119 if (info
->delta_disks
< 0)
1120 info
->array
.raid_disks
-= info
->delta_disks
;
1122 info
->reshape_active
= 0;
1124 info
->recovery_blocked
= info
->reshape_active
;
1127 for (i
=0; i
<map_disks
; i
++)
1129 for (i
= 0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
1130 role
= __le16_to_cpu(sb
->dev_roles
[i
]);
1131 if (/*role == MD_DISK_ROLE_SPARE || */role
< (unsigned) info
->array
.raid_disks
) {
1133 if (map
&& role
< map_disks
)
1138 info
->array
.working_disks
= working
;
1140 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_JOURNAL
)) {
1141 info
->journal_device_required
= 1;
1142 info
->consistency_policy
= CONSISTENCY_POLICY_JOURNAL
;
1143 } else if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_PPL
)) {
1144 info
->consistency_policy
= CONSISTENCY_POLICY_PPL
;
1145 } else if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
1146 info
->consistency_policy
= CONSISTENCY_POLICY_BITMAP
;
1147 } else if (info
->array
.level
<= 0) {
1148 info
->consistency_policy
= CONSISTENCY_POLICY_NONE
;
1150 info
->consistency_policy
= CONSISTENCY_POLICY_RESYNC
;
1153 info
->journal_clean
= 0;
1156 static struct mdinfo
*container_content1(struct supertype
*st
, char *subarray
)
1158 struct mdinfo
*info
;
1163 info
= xmalloc(sizeof(*info
));
1164 getinfo_super1(st
, info
, NULL
);
1168 static int update_super1(struct supertype
*st
, struct mdinfo
*info
,
1169 char *update
, char *devname
, int verbose
,
1170 int uuid_set
, char *homehost
)
1172 /* NOTE: for 'assemble' and 'force' we need to return non-zero
1173 * if any change was made. For others, the return value is
1178 struct mdp_superblock_1
*sb
= st
->sb
;
1179 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
1181 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready()) {
1182 rv
= cluster_get_dlmlock(&lockid
);
1184 pr_err("Cannot get dlmlock in %s return %d\n",
1186 cluster_release_dlmlock(lockid
);
1191 if (strcmp(update
, "homehost") == 0 &&
1193 /* Note that 'homehost' is special as it is really
1198 c
= strchr(sb
->set_name
, ':');
1200 strncpy(info
->name
, c
+1, 31 - (c
-sb
->set_name
));
1202 strncpy(info
->name
, sb
->set_name
, 32);
1206 if (strcmp(update
, "force-one")==0) {
1207 /* Not enough devices for a working array,
1208 * so bring this one up-to-date
1210 if (sb
->events
!= __cpu_to_le64(info
->events
))
1212 sb
->events
= __cpu_to_le64(info
->events
);
1213 } else if (strcmp(update
, "force-array")==0) {
1214 /* Degraded array and 'force' requests to
1215 * maybe need to mark it 'clean'.
1217 switch(__le32_to_cpu(sb
->level
)) {
1221 /* need to force clean */
1222 if (sb
->resync_offset
!= MaxSector
)
1224 sb
->resync_offset
= MaxSector
;
1226 } else if (strcmp(update
, "assemble")==0) {
1227 int d
= info
->disk
.number
;
1229 if (info
->disk
.state
& (1<<MD_DISK_ACTIVE
))
1230 want
= info
->disk
.raid_disk
;
1231 else if (info
->disk
.state
& (1<<MD_DISK_JOURNAL
))
1232 want
= MD_DISK_ROLE_JOURNAL
;
1234 want
= MD_DISK_ROLE_SPARE
;
1235 if (sb
->dev_roles
[d
] != __cpu_to_le16(want
)) {
1236 sb
->dev_roles
[d
] = __cpu_to_le16(want
);
1239 if (info
->reshape_active
&&
1241 __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
) &&
1242 info
->delta_disks
>= 0 &&
1243 info
->reshape_progress
<
1244 __le64_to_cpu(sb
->reshape_position
)) {
1245 sb
->reshape_position
=
1246 __cpu_to_le64(info
->reshape_progress
);
1249 if (info
->reshape_active
&&
1251 __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
) &&
1252 info
->delta_disks
< 0 &&
1253 info
->reshape_progress
>
1254 __le64_to_cpu(sb
->reshape_position
)) {
1255 sb
->reshape_position
=
1256 __cpu_to_le64(info
->reshape_progress
);
1259 } else if (strcmp(update
, "linear-grow-new") == 0) {
1262 unsigned int max
= __le32_to_cpu(sb
->max_dev
);
1264 for (i
= 0; i
< max
; i
++)
1265 if (__le16_to_cpu(sb
->dev_roles
[i
]) >=
1266 MD_DISK_ROLE_FAULTY
)
1268 sb
->dev_number
= __cpu_to_le32(i
);
1269 info
->disk
.number
= i
;
1270 if (max
>= __le32_to_cpu(sb
->max_dev
))
1271 sb
->max_dev
= __cpu_to_le32(max
+1);
1273 random_uuid(sb
->device_uuid
);
1275 sb
->dev_roles
[i
] = __cpu_to_le16(info
->disk
.raid_disk
);
1277 fd
= open(devname
, O_RDONLY
);
1279 unsigned long long ds
;
1280 get_dev_size(fd
, devname
, &ds
);
1283 if (__le64_to_cpu(sb
->super_offset
) <
1284 __le64_to_cpu(sb
->data_offset
)) {
1285 sb
->data_size
= __cpu_to_le64(
1286 ds
- __le64_to_cpu(sb
->data_offset
));
1289 ds
&= ~(unsigned long long)(4*2-1);
1290 sb
->super_offset
= __cpu_to_le64(ds
);
1291 sb
->data_size
= __cpu_to_le64(
1292 ds
- __le64_to_cpu(sb
->data_offset
));
1295 } else if (strcmp(update
, "linear-grow-update") == 0) {
1296 sb
->raid_disks
= __cpu_to_le32(info
->array
.raid_disks
);
1297 sb
->dev_roles
[info
->disk
.number
] =
1298 __cpu_to_le16(info
->disk
.raid_disk
);
1299 } else if (strcmp(update
, "resync") == 0) {
1300 /* make sure resync happens */
1301 sb
->resync_offset
= 0ULL;
1302 } else if (strcmp(update
, "uuid") == 0) {
1303 copy_uuid(sb
->set_uuid
, info
->uuid
, super1
.swapuuid
);
1305 if (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
)
1306 memcpy(bms
->uuid
, sb
->set_uuid
, 16);
1307 } else if (strcmp(update
, "no-bitmap") == 0) {
1308 sb
->feature_map
&= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
);
1309 } else if (strcmp(update
, "bbl") == 0) {
1310 /* only possible if there is room after the bitmap, or if
1311 * there is no bitmap
1313 unsigned long long sb_offset
= __le64_to_cpu(sb
->super_offset
);
1314 unsigned long long data_offset
= __le64_to_cpu(sb
->data_offset
);
1315 long bitmap_offset
= 0;
1316 long bm_sectors
= 0;
1319 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1320 bitmap_offset
= (long)__le32_to_cpu(sb
->bitmap_offset
);
1321 bm_sectors
= calc_bitmap_size(bms
, 4096) >> 9;
1322 } else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_PPL
)) {
1323 bitmap_offset
= (long)__le16_to_cpu(sb
->ppl
.offset
);
1324 bm_sectors
= (long)__le16_to_cpu(sb
->ppl
.size
);
1327 if (sb_offset
< data_offset
) {
1329 * 1.1 or 1.2. Put bbl after bitmap leaving
1333 bb_offset
= sb_offset
+ 8;
1334 if (bm_sectors
&& bitmap_offset
> 0)
1335 bb_offset
= bitmap_offset
+ bm_sectors
;
1336 while (bb_offset
< (long)sb_offset
+ 8 + 32*2 &&
1337 bb_offset
+ 8+8 <= (long)data_offset
)
1338 /* too close to bitmap, and room to grow */
1340 if (bb_offset
+ 8 <= (long)data_offset
) {
1341 sb
->bblog_size
= __cpu_to_le16(8);
1342 sb
->bblog_offset
= __cpu_to_le32(bb_offset
);
1345 /* 1.0 - Put bbl just before super block */
1346 if (bm_sectors
&& bitmap_offset
< 0)
1347 space
= -bitmap_offset
- bm_sectors
;
1349 space
= sb_offset
- data_offset
-
1350 __le64_to_cpu(sb
->data_size
);
1352 sb
->bblog_size
= __cpu_to_le16(8);
1353 sb
->bblog_offset
= __cpu_to_le32((unsigned)-8);
1356 } else if (strcmp(update
, "no-bbl") == 0) {
1357 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
1358 pr_err("Cannot remove active bbl from %s\n",devname
);
1361 sb
->bblog_shift
= 0;
1362 sb
->bblog_offset
= 0;
1364 } else if (strcmp(update
, "force-no-bbl") == 0) {
1365 sb
->feature_map
&= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
);
1367 sb
->bblog_shift
= 0;
1368 sb
->bblog_offset
= 0;
1369 } else if (strcmp(update
, "ppl") == 0) {
1370 unsigned long long sb_offset
= __le64_to_cpu(sb
->super_offset
);
1371 unsigned long long data_offset
= __le64_to_cpu(sb
->data_offset
);
1372 unsigned long long data_size
= __le64_to_cpu(sb
->data_size
);
1373 long bb_offset
= __le32_to_cpu(sb
->bblog_offset
);
1378 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1379 pr_err("Cannot add PPL to array with bitmap\n");
1383 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_JOURNAL
)) {
1384 pr_err("Cannot add PPL to array with journal\n");
1388 if (sb_offset
< data_offset
) {
1390 space
= bb_offset
- 8;
1392 space
= data_offset
- sb_offset
- 8;
1395 offset
= -(sb_offset
- data_offset
- data_size
);
1396 if (offset
< INT16_MIN
)
1398 space
= -(offset
- bb_offset
);
1401 if (space
< (PPL_HEADER_SIZE
>> 9) + 8) {
1402 pr_err("Not enough space to add ppl\n");
1406 optimal_space
= choose_ppl_space(__le32_to_cpu(sb
->chunksize
));
1408 if (space
> optimal_space
)
1409 space
= optimal_space
;
1410 if (space
> UINT16_MAX
)
1413 sb
->ppl
.offset
= __cpu_to_le16(offset
);
1414 sb
->ppl
.size
= __cpu_to_le16(space
);
1415 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_PPL
);
1416 } else if (strcmp(update
, "no-ppl") == 0) {
1417 sb
->feature_map
&= ~ __cpu_to_le32(MD_FEATURE_PPL
);
1418 } else if (strcmp(update
, "name") == 0) {
1419 if (info
->name
[0] == 0)
1420 sprintf(info
->name
, "%d", info
->array
.md_minor
);
1421 memset(sb
->set_name
, 0, sizeof(sb
->set_name
));
1423 strchr(info
->name
, ':') == NULL
&&
1424 strlen(homehost
)+1+strlen(info
->name
) < 32) {
1425 strcpy(sb
->set_name
, homehost
);
1426 strcat(sb
->set_name
, ":");
1427 strcat(sb
->set_name
, info
->name
);
1429 strncpy(sb
->set_name
, info
->name
, sizeof(sb
->set_name
));
1430 } else if (strcmp(update
, "devicesize") == 0 &&
1431 __le64_to_cpu(sb
->super_offset
) <
1432 __le64_to_cpu(sb
->data_offset
)) {
1433 /* set data_size to device size less data_offset */
1434 struct misc_dev_info
*misc
= (struct misc_dev_info
*)
1435 (st
->sb
+ MAX_SB_SIZE
+ BM_SUPER_SIZE
);
1436 sb
->data_size
= __cpu_to_le64(
1437 misc
->device_size
- __le64_to_cpu(sb
->data_offset
));
1438 } else if (strncmp(update
, "revert-reshape", 14) == 0) {
1440 if (!(sb
->feature_map
&
1441 __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
)))
1442 pr_err("No active reshape to revert on %s\n",
1446 unsigned long long reshape_sectors
;
1449 /* If the reshape hasn't started, just stop it.
1450 * It is conceivable that a stripe was modified but
1451 * the metadata not updated. In that case the backup
1452 * should have been used to get passed the critical stage.
1453 * If that couldn't happen, the "-nobackup" version
1456 if (strcmp(update
, "revert-reshape-nobackup") == 0 &&
1457 sb
->reshape_position
== 0 &&
1458 (__le32_to_cpu(sb
->delta_disks
) > 0 ||
1459 (__le32_to_cpu(sb
->delta_disks
) == 0 &&
1460 !(sb
->feature_map
& __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS
))))) {
1461 sb
->feature_map
&= ~__cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
);
1462 sb
->raid_disks
= __cpu_to_le32(__le32_to_cpu(sb
->raid_disks
) -
1463 __le32_to_cpu(sb
->delta_disks
));
1464 sb
->delta_disks
= 0;
1467 /* reshape_position is a little messy.
1468 * Its value must be a multiple of the larger
1469 * chunk size, and of the "after" data disks.
1470 * So when reverting we need to change it to
1471 * be a multiple of the new "after" data disks,
1472 * which is the old "before".
1473 * If it isn't already a multiple of 'before',
1474 * the only thing we could do would be
1475 * copy some block around on the disks, which
1476 * is easy to get wrong.
1477 * So we reject a revert-reshape unless the
1478 * alignment is good.
1480 if (__le32_to_cpu(sb
->level
) >= 4 &&
1481 __le32_to_cpu(sb
->level
) <= 6) {
1483 __le64_to_cpu(sb
->reshape_position
);
1484 reshape_chunk
= __le32_to_cpu(sb
->new_chunk
);
1485 reshape_chunk
*= __le32_to_cpu(sb
->raid_disks
) -
1486 __le32_to_cpu(sb
->delta_disks
) -
1487 (__le32_to_cpu(sb
->level
)==6 ? 2 : 1);
1488 if (reshape_sectors
% reshape_chunk
) {
1489 pr_err("Reshape position is not suitably aligned.\n");
1490 pr_err("Try normal assembly and stop again\n");
1495 __cpu_to_le32(__le32_to_cpu(sb
->raid_disks
) -
1496 __le32_to_cpu(sb
->delta_disks
));
1497 if (sb
->delta_disks
== 0)
1498 sb
->feature_map
^= __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS
);
1500 sb
->delta_disks
= __cpu_to_le32(-__le32_to_cpu(sb
->delta_disks
));
1502 temp
= sb
->new_layout
;
1503 sb
->new_layout
= sb
->layout
;
1506 temp
= sb
->new_chunk
;
1507 sb
->new_chunk
= sb
->chunksize
;
1508 sb
->chunksize
= temp
;
1510 if (sb
->feature_map
&
1511 __cpu_to_le32(MD_FEATURE_NEW_OFFSET
)) {
1513 (int32_t)__le32_to_cpu(sb
->new_offset
);
1514 sb
->data_offset
= __cpu_to_le64(__le64_to_cpu(sb
->data_offset
) + offset_delta
);
1515 sb
->new_offset
= __cpu_to_le32(-offset_delta
);
1516 sb
->data_size
= __cpu_to_le64(__le64_to_cpu(sb
->data_size
) - offset_delta
);
1520 } else if (strcmp(update
, "_reshape_progress") == 0)
1521 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
1522 else if (strcmp(update
, "writemostly") == 0)
1523 sb
->devflags
|= WriteMostly1
;
1524 else if (strcmp(update
, "readwrite") == 0)
1525 sb
->devflags
&= ~WriteMostly1
;
1526 else if (strcmp(update
, "failfast") == 0)
1527 sb
->devflags
|= FailFast1
;
1528 else if (strcmp(update
, "nofailfast") == 0)
1529 sb
->devflags
&= ~FailFast1
;
1533 sb
->sb_csum
= calc_sb_1_csum(sb
);
1534 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready())
1535 cluster_release_dlmlock(lockid
);
1540 static int init_super1(struct supertype
*st
, mdu_array_info_t
*info
,
1541 struct shape
*s
, char *name
, char *homehost
,
1542 int *uuid
, unsigned long long data_offset
)
1544 struct mdp_superblock_1
*sb
;
1549 if (posix_memalign((void**)&sb
, 4096, SUPER1_SIZE
) != 0) {
1550 pr_err("could not allocate superblock\n");
1553 memset(sb
, 0, SUPER1_SIZE
);
1557 /* zeroing superblock */
1561 spares
= info
->working_disks
- info
->active_disks
;
1562 if (info
->raid_disks
+ spares
> MAX_DEVS
) {
1563 pr_err("too many devices requested: %d+%d > %d\n",
1564 info
->raid_disks
, spares
, MAX_DEVS
);
1568 sb
->magic
= __cpu_to_le32(MD_SB_MAGIC
);
1569 sb
->major_version
= __cpu_to_le32(1);
1570 sb
->feature_map
= 0;
1574 copy_uuid(sb
->set_uuid
, uuid
, super1
.swapuuid
);
1576 random_uuid(sb
->set_uuid
);;
1578 if (name
== NULL
|| *name
== 0) {
1579 sprintf(defname
, "%d", info
->md_minor
);
1583 strchr(name
, ':')== NULL
&&
1584 strlen(homehost
)+1+strlen(name
) < 32) {
1585 strcpy(sb
->set_name
, homehost
);
1586 strcat(sb
->set_name
, ":");
1587 strcat(sb
->set_name
, name
);
1589 strncpy(sb
->set_name
, name
, sizeof(sb
->set_name
));
1591 sb
->ctime
= __cpu_to_le64((unsigned long long)time(0));
1592 sb
->level
= __cpu_to_le32(info
->level
);
1593 sb
->layout
= __cpu_to_le32(info
->layout
);
1594 sb
->size
= __cpu_to_le64(s
->size
*2ULL);
1595 sb
->chunksize
= __cpu_to_le32(info
->chunk_size
>>9);
1596 sb
->raid_disks
= __cpu_to_le32(info
->raid_disks
);
1598 sb
->data_offset
= __cpu_to_le64(data_offset
);
1599 sb
->data_size
= __cpu_to_le64(0);
1600 sb
->super_offset
= __cpu_to_le64(0);
1601 sb
->recovery_offset
= __cpu_to_le64(0);
1603 sb
->utime
= sb
->ctime
;
1604 sb
->events
= __cpu_to_le64(1);
1605 if (info
->state
& (1<<MD_SB_CLEAN
))
1606 sb
->resync_offset
= MaxSector
;
1608 sb
->resync_offset
= 0;
1609 sbsize
= sizeof(struct mdp_superblock_1
) +
1610 2 * (info
->raid_disks
+ spares
);
1611 sbsize
= ROUND_UP(sbsize
, 512);
1613 __cpu_to_le32((sbsize
- sizeof(struct mdp_superblock_1
)) / 2);
1615 memset(sb
->dev_roles
, 0xff,
1616 MAX_SB_SIZE
- sizeof(struct mdp_superblock_1
));
1618 if (s
->consistency_policy
== CONSISTENCY_POLICY_PPL
)
1619 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_PPL
);
1627 long long data_offset
;
1628 mdu_disk_info_t disk
;
1629 struct devinfo
*next
;
1632 /* Add a device to the superblock being created */
1633 static int add_to_super1(struct supertype
*st
, mdu_disk_info_t
*dk
,
1634 int fd
, char *devname
, unsigned long long data_offset
)
1636 struct mdp_superblock_1
*sb
= st
->sb
;
1637 __u16
*rp
= sb
->dev_roles
+ dk
->number
;
1638 struct devinfo
*di
, **dip
;
1639 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
1643 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready()) {
1644 rv
= cluster_get_dlmlock(&lockid
);
1646 pr_err("Cannot get dlmlock in %s return %d\n",
1648 cluster_release_dlmlock(lockid
);
1653 dk_state
= dk
->state
& ~(1<<MD_DISK_FAILFAST
);
1654 if ((dk_state
& (1<<MD_DISK_ACTIVE
)) &&
1655 (dk_state
& (1<<MD_DISK_SYNC
)))/* active, sync */
1656 *rp
= __cpu_to_le16(dk
->raid_disk
);
1657 else if (dk_state
& (1<<MD_DISK_JOURNAL
))
1658 *rp
= MD_DISK_ROLE_JOURNAL
;
1659 else if ((dk_state
& ~(1<<MD_DISK_ACTIVE
)) == 0)
1660 /* active or idle -> spare */
1661 *rp
= MD_DISK_ROLE_SPARE
;
1663 *rp
= MD_DISK_ROLE_FAULTY
;
1665 if (dk
->number
>= (int)__le32_to_cpu(sb
->max_dev
) &&
1666 __le32_to_cpu(sb
->max_dev
) < MAX_DEVS
)
1667 sb
->max_dev
= __cpu_to_le32(dk
->number
+1);
1669 sb
->dev_number
= __cpu_to_le32(dk
->number
);
1670 sb
->devflags
= 0; /* don't copy another disks flags */
1671 sb
->sb_csum
= calc_sb_1_csum(sb
);
1673 dip
= (struct devinfo
**)&st
->info
;
1675 dip
= &(*dip
)->next
;
1676 di
= xmalloc(sizeof(struct devinfo
));
1678 di
->devname
= devname
;
1680 di
->data_offset
= data_offset
;
1684 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready())
1685 cluster_release_dlmlock(lockid
);
1690 static int locate_bitmap1(struct supertype
*st
, int fd
, int node_num
);
1692 static int store_super1(struct supertype
*st
, int fd
)
1694 struct mdp_superblock_1
*sb
= st
->sb
;
1695 unsigned long long sb_offset
;
1696 struct align_fd afd
;
1698 unsigned long long dsize
;
1699 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
1702 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready()) {
1703 rv
= cluster_get_dlmlock(&lockid
);
1705 pr_err("Cannot get dlmlock in %s return %d\n",
1707 cluster_release_dlmlock(lockid
);
1712 if (!get_dev_size(fd
, NULL
, &dsize
))
1723 * Calculate the position of the superblock.
1724 * It is always aligned to a 4K boundary and
1725 * depending on minor_version, it can be:
1726 * 0: At least 8K, but less than 12K, from end of device
1727 * 1: At start of device
1728 * 2: 4K from start of device.
1730 switch(st
->minor_version
) {
1734 sb_offset
&= ~(4*2-1);
1746 if (sb_offset
!= __le64_to_cpu(sb
->super_offset
) &&
1747 0 != __le64_to_cpu(sb
->super_offset
)
1749 pr_err("internal error - sb_offset is wrong\n");
1753 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL)
1756 sbsize
= ROUND_UP(sizeof(*sb
) + 2 * __le32_to_cpu(sb
->max_dev
), 512);
1758 if (awrite(&afd
, sb
, sbsize
) != sbsize
)
1761 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1762 struct bitmap_super_s
*bm
= (struct bitmap_super_s
*)
1763 (((char*)sb
)+MAX_SB_SIZE
);
1764 if (__le32_to_cpu(bm
->magic
) == BITMAP_MAGIC
) {
1765 locate_bitmap1(st
, fd
, 0);
1766 if (awrite(&afd
, bm
, sizeof(*bm
)) != sizeof(*bm
))
1771 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
&& dlm_funs_ready())
1772 cluster_release_dlmlock(lockid
);
1777 static int load_super1(struct supertype
*st
, int fd
, char *devname
);
1779 static unsigned long choose_bm_space(unsigned long devsize
)
1781 /* if the device is bigger than 8Gig, save 64k for bitmap usage,
1782 * if bigger than 200Gig, save 128k
1783 * NOTE: result must be multiple of 4K else bad things happen
1784 * on 4K-sector devices.
1788 if (devsize
- 64*2 >= 200*1024*1024*2)
1790 if (devsize
- 4*2 > 8*1024*1024*2)
1795 static void free_super1(struct supertype
*st
);
1797 __u32
crc32c_le(__u32 crc
, unsigned char const *p
, size_t len
);
1799 static int write_init_ppl1(struct supertype
*st
, struct mdinfo
*info
, int fd
)
1801 struct mdp_superblock_1
*sb
= st
->sb
;
1803 struct ppl_header
*ppl_hdr
;
1806 ret
= posix_memalign(&buf
, 4096, PPL_HEADER_SIZE
);
1808 pr_err("Failed to allocate PPL header buffer\n");
1812 memset(buf
, 0, PPL_HEADER_SIZE
);
1814 memset(ppl_hdr
->reserved
, 0xff, PPL_HDR_RESERVED
);
1815 ppl_hdr
->signature
= __cpu_to_le32(~crc32c_le(~0, sb
->set_uuid
,
1816 sizeof(sb
->set_uuid
)));
1817 ppl_hdr
->checksum
= __cpu_to_le32(~crc32c_le(~0, buf
, PPL_HEADER_SIZE
));
1819 if (lseek64(fd
, info
->ppl_sector
* 512, SEEK_SET
) < 0) {
1821 perror("Failed to seek to PPL header location");
1824 if (!ret
&& write(fd
, buf
, PPL_HEADER_SIZE
) != PPL_HEADER_SIZE
) {
1826 perror("Write PPL header failed");
1836 #define META_BLOCK_SIZE 4096
1838 static int write_empty_r5l_meta_block(struct supertype
*st
, int fd
)
1840 struct r5l_meta_block
*mb
;
1841 struct mdp_superblock_1
*sb
= st
->sb
;
1842 struct align_fd afd
;
1847 if (posix_memalign((void**)&mb
, 4096, META_BLOCK_SIZE
) != 0) {
1848 pr_err("Could not allocate memory for the meta block.\n");
1852 memset(mb
, 0, META_BLOCK_SIZE
);
1854 mb
->magic
= __cpu_to_le32(R5LOG_MAGIC
);
1855 mb
->version
= R5LOG_VERSION
;
1856 mb
->meta_size
= __cpu_to_le32(sizeof(struct r5l_meta_block
));
1857 mb
->seq
= __cpu_to_le64(random32());
1858 mb
->position
= __cpu_to_le64(0);
1860 crc
= crc32c_le(0xffffffff, sb
->set_uuid
, sizeof(sb
->set_uuid
));
1861 crc
= crc32c_le(crc
, (void *)mb
, META_BLOCK_SIZE
);
1864 if (lseek64(fd
, __le64_to_cpu(sb
->data_offset
) * 512, 0) < 0LL) {
1865 pr_err("cannot seek to offset of the meta block\n");
1869 if (awrite(&afd
, mb
, META_BLOCK_SIZE
) != META_BLOCK_SIZE
) {
1870 pr_err("failed to store write the meta block \n");
1883 static int write_init_super1(struct supertype
*st
)
1885 struct mdp_superblock_1
*sb
= st
->sb
;
1886 struct supertype
*refst
;
1888 unsigned long long bm_space
;
1890 unsigned long long dsize
, array_size
;
1891 unsigned long long sb_offset
;
1892 unsigned long long data_offset
;
1895 for (di
= st
->info
; di
; di
= di
->next
) {
1896 if (di
->disk
.state
& (1 << MD_DISK_JOURNAL
))
1897 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_JOURNAL
);
1900 for (di
= st
->info
; di
; di
= di
->next
) {
1901 if (di
->disk
.state
& (1 << MD_DISK_FAULTY
))
1906 while (Kill(di
->devname
, NULL
, 0, -1, 1) == 0)
1909 sb
->dev_number
= __cpu_to_le32(di
->disk
.number
);
1910 if (di
->disk
.state
& (1<<MD_DISK_WRITEMOSTLY
))
1911 sb
->devflags
|= WriteMostly1
;
1913 sb
->devflags
&= ~WriteMostly1
;
1914 if (di
->disk
.state
& (1<<MD_DISK_FAILFAST
))
1915 sb
->devflags
|= FailFast1
;
1917 sb
->devflags
&= ~FailFast1
;
1919 random_uuid(sb
->device_uuid
);
1921 if (!(di
->disk
.state
& (1<<MD_DISK_JOURNAL
)))
1924 refst
= dup_super(st
);
1925 if (load_super1(refst
, di
->fd
, NULL
)==0) {
1926 struct mdp_superblock_1
*refsb
= refst
->sb
;
1928 memcpy(sb
->device_uuid
, refsb
->device_uuid
, 16);
1929 if (memcmp(sb
->set_uuid
, refsb
->set_uuid
, 16)==0) {
1930 /* same array, so preserve events and
1932 sb
->events
= refsb
->events
;
1933 /* bugs in 2.6.17 and earlier mean the
1934 * dev_number chosen in Manage must be preserved
1936 if (get_linux_version() >= 2006018)
1937 sb
->dev_number
= refsb
->dev_number
;
1943 if (!get_dev_size(di
->fd
, NULL
, &dsize
)) {
1956 * Calculate the position of the superblock.
1957 * It is always aligned to a 4K boundary and
1958 * depending on minor_version, it can be:
1959 * 0: At least 8K, but less than 12K, from end of device
1960 * 1: At start of device
1961 * 2: 4K from start of device.
1962 * data_offset has already been set.
1964 array_size
= __le64_to_cpu(sb
->size
);
1966 /* work out how much space we left for a bitmap */
1967 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1968 bitmap_super_t
*bms
= (bitmap_super_t
*)
1969 (((char *)sb
) + MAX_SB_SIZE
);
1970 bm_space
= calc_bitmap_size(bms
, 4096) >> 9;
1971 bm_offset
= (long)__le32_to_cpu(sb
->bitmap_offset
);
1972 } else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_PPL
)) {
1974 choose_ppl_space(__le32_to_cpu(sb
->chunksize
));
1975 if (bm_space
> UINT16_MAX
)
1976 bm_space
= UINT16_MAX
;
1977 if (st
->minor_version
== 0) {
1978 bm_offset
= -bm_space
- 8;
1979 if (bm_offset
< INT16_MIN
) {
1980 bm_offset
= INT16_MIN
;
1981 bm_space
= -bm_offset
- 8;
1986 sb
->ppl
.offset
= __cpu_to_le16(bm_offset
);
1987 sb
->ppl
.size
= __cpu_to_le16(bm_space
);
1989 bm_space
= choose_bm_space(array_size
);
1993 data_offset
= di
->data_offset
;
1994 if (data_offset
== INVALID_SECTORS
)
1995 data_offset
= st
->data_offset
;
1996 switch(st
->minor_version
) {
1998 /* Add 8 sectors for bad block log */
2000 if (data_offset
== INVALID_SECTORS
)
2004 sb_offset
&= ~(4*2-1);
2005 sb
->data_offset
= __cpu_to_le64(data_offset
);
2006 sb
->super_offset
= __cpu_to_le64(sb_offset
);
2007 if (sb_offset
< array_size
+ bm_space
)
2008 bm_space
= sb_offset
- array_size
;
2009 sb
->data_size
= __cpu_to_le64(sb_offset
- bm_space
);
2010 if (bm_space
>= 8) {
2011 sb
->bblog_size
= __cpu_to_le16(8);
2012 sb
->bblog_offset
= __cpu_to_le32((unsigned)-8);
2017 sb_offset
= st
->minor_version
== 2 ? 8 : 0;
2018 sb
->super_offset
= __cpu_to_le64(sb_offset
);
2019 if (data_offset
== INVALID_SECTORS
)
2020 data_offset
= sb_offset
+ 16;
2022 sb
->data_offset
= __cpu_to_le64(data_offset
);
2023 sb
->data_size
= __cpu_to_le64(dsize
- data_offset
);
2024 if (data_offset
>= sb_offset
+bm_offset
+bm_space
+8) {
2025 sb
->bblog_size
= __cpu_to_le16(8);
2026 sb
->bblog_offset
= __cpu_to_le32(bm_offset
+
2028 } else if (data_offset
>= sb_offset
+ 16) {
2029 sb
->bblog_size
= __cpu_to_le16(8);
2030 /* '8' sectors for the bblog, and 'sb_offset'
2031 * because we want offset from superblock, not
2034 sb
->bblog_offset
= __cpu_to_le32(data_offset
-
2039 pr_err("Failed to write invalid metadata format 1.%i to %s\n",
2040 st
->minor_version
, di
->devname
);
2045 * Disable badblock log on clusters, or when
2046 * explicitly requested
2048 if (st
->nodes
> 0 || conf_get_create_info()->bblist
== 0) {
2050 sb
->bblog_offset
= 0;
2053 sb
->sb_csum
= calc_sb_1_csum(sb
);
2054 rv
= store_super1(st
, di
->fd
);
2056 if (rv
== 0 && (di
->disk
.state
& (1 << MD_DISK_JOURNAL
))) {
2057 rv
= write_empty_r5l_meta_block(st
, di
->fd
);
2063 (__le32_to_cpu(sb
->feature_map
) &
2064 MD_FEATURE_BITMAP_OFFSET
)) {
2065 rv
= st
->ss
->write_bitmap(st
, di
->fd
, NodeNumUpdate
);
2066 } else if (rv
== 0 &&
2067 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_PPL
)) {
2070 st
->ss
->getinfo_super(st
, &info
, NULL
);
2071 rv
= st
->ss
->write_init_ppl(st
, &info
, di
->fd
);
2081 pr_err("Failed to write metadata to %s\n", di
->devname
);
2086 static int compare_super1(struct supertype
*st
, struct supertype
*tst
)
2090 * 0 same, or first was empty, and second was copied
2091 * 1 second had wrong number
2093 * 3 wrong other info
2095 struct mdp_superblock_1
*first
= st
->sb
;
2096 struct mdp_superblock_1
*second
= tst
->sb
;
2098 if (second
->magic
!= __cpu_to_le32(MD_SB_MAGIC
))
2100 if (second
->major_version
!= __cpu_to_le32(1))
2104 if (posix_memalign((void**)&first
, 4096, SUPER1_SIZE
) != 0) {
2105 pr_err("could not allocate superblock\n");
2108 memcpy(first
, second
, SUPER1_SIZE
);
2112 if (memcmp(first
->set_uuid
, second
->set_uuid
, 16)!= 0)
2115 if (first
->ctime
!= second
->ctime
||
2116 first
->level
!= second
->level
||
2117 first
->layout
!= second
->layout
||
2118 first
->size
!= second
->size
||
2119 first
->chunksize
!= second
->chunksize
||
2120 first
->raid_disks
!= second
->raid_disks
)
2125 static int load_super1(struct supertype
*st
, int fd
, char *devname
)
2127 unsigned long long dsize
;
2128 unsigned long long sb_offset
;
2129 struct mdp_superblock_1
*super
;
2131 struct bitmap_super_s
*bsb
;
2132 struct misc_dev_info
*misc
;
2133 struct align_fd afd
;
2139 if (st
->ss
== NULL
|| st
->minor_version
== -1) {
2141 struct supertype tst
;
2142 __u64 bestctime
= 0;
2143 /* guess... choose latest ctime */
2144 memset(&tst
, 0, sizeof(tst
));
2146 for (tst
.minor_version
= 0; tst
.minor_version
<= 2;
2147 tst
.minor_version
++) {
2148 switch(load_super1(&tst
, fd
, devname
)) {
2149 case 0: super
= tst
.sb
;
2150 if (bestvers
== -1 ||
2151 bestctime
< __le64_to_cpu(super
->ctime
)) {
2152 bestvers
= tst
.minor_version
;
2153 bestctime
= __le64_to_cpu(super
->ctime
);
2158 case 1: return 1; /*bad device */
2159 case 2: break; /* bad, try next */
2162 if (bestvers
!= -1) {
2164 tst
.minor_version
= bestvers
;
2166 tst
.max_devs
= MAX_DEVS
;
2167 rv
= load_super1(&tst
, fd
, devname
);
2174 if (!get_dev_size(fd
, devname
, &dsize
))
2180 pr_err("%s is too small for md: size is %llu sectors.\n",
2186 * Calculate the position of the superblock.
2187 * It is always aligned to a 4K boundary and
2188 * depending on minor_version, it can be:
2189 * 0: At least 8K, but less than 12K, from end of device
2190 * 1: At start of device
2191 * 2: 4K from start of device.
2193 switch(st
->minor_version
) {
2197 sb_offset
&= ~(4*2-1);
2209 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL) {
2211 pr_err("Cannot seek to superblock on %s: %s\n",
2212 devname
, strerror(errno
));
2216 if (posix_memalign((void**)&super
, 4096, SUPER1_SIZE
) != 0) {
2217 pr_err("could not allocate superblock\n");
2221 memset(super
, 0, SUPER1_SIZE
);
2223 if (aread(&afd
, super
, MAX_SB_SIZE
) != MAX_SB_SIZE
) {
2225 pr_err("Cannot read superblock on %s\n",
2231 if (__le32_to_cpu(super
->magic
) != MD_SB_MAGIC
) {
2233 pr_err("No super block found on %s (Expected magic %08x, got %08x)\n",
2234 devname
, MD_SB_MAGIC
,
2235 __le32_to_cpu(super
->magic
));
2240 if (__le32_to_cpu(super
->major_version
) != 1) {
2242 pr_err("Cannot interpret superblock on %s - version is %d\n",
2243 devname
, __le32_to_cpu(super
->major_version
));
2247 if (__le64_to_cpu(super
->super_offset
) != sb_offset
) {
2249 pr_err("No superblock found on %s (super_offset is wrong)\n",
2256 bsb
= (struct bitmap_super_s
*)(((char*)super
)+MAX_SB_SIZE
);
2258 misc
= (struct misc_dev_info
*)
2259 (((char*)super
)+MAX_SB_SIZE
+BM_SUPER_SIZE
);
2260 misc
->device_size
= dsize
;
2261 if (st
->data_offset
== INVALID_SECTORS
)
2262 st
->data_offset
= __le64_to_cpu(super
->data_offset
);
2264 /* Now check on the bitmap superblock */
2265 if ((__le32_to_cpu(super
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) == 0)
2267 /* Read the bitmap superblock and make sure it looks
2268 * valid. If it doesn't clear the bit. An --assemble --force
2269 * should get that written out.
2271 locate_bitmap1(st
, fd
, 0);
2272 if (aread(&afd
, bsb
, 512) != 512)
2275 uuid_from_super1(st
, uuid
);
2276 if (__le32_to_cpu(bsb
->magic
) != BITMAP_MAGIC
||
2277 memcmp(bsb
->uuid
, uuid
, 16) != 0)
2282 super
->feature_map
= __cpu_to_le32(__le32_to_cpu(super
->feature_map
)
2283 & ~MD_FEATURE_BITMAP_OFFSET
);
2287 static struct supertype
*match_metadata_desc1(char *arg
)
2289 struct supertype
*st
= xcalloc(1, sizeof(*st
));
2291 st
->container_devnm
[0] = 0;
2293 st
->max_devs
= MAX_DEVS
;
2295 st
->data_offset
= INVALID_SECTORS
;
2296 /* leading zeros can be safely ignored. --detail generates them. */
2299 if (strcmp(arg
, "1.0") == 0 || strcmp(arg
, "1.00") == 0) {
2300 st
->minor_version
= 0;
2303 if (strcmp(arg
, "1.1") == 0 || strcmp(arg
, "1.01") == 0
2305 st
->minor_version
= 1;
2308 if (strcmp(arg
, "1.2") == 0 ||
2309 #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */
2310 strcmp(arg
, "default") == 0 ||
2311 #endif /* DEFAULT_OLD_METADATA */
2312 strcmp(arg
, "1.02") == 0) {
2313 st
->minor_version
= 2;
2316 if (strcmp(arg
, "1") == 0 || strcmp(arg
, "default") == 0) {
2317 st
->minor_version
= -1;
2325 /* find available size on device with this devsize, using
2326 * superblock type st, and reserving 'reserve' sectors for
2329 static __u64
avail_size1(struct supertype
*st
, __u64 devsize
,
2330 unsigned long long data_offset
)
2332 struct mdp_superblock_1
*super
= st
->sb
;
2338 if (__le32_to_cpu(super
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
) {
2339 /* hot-add. allow for actual size of bitmap */
2340 struct bitmap_super_s
*bsb
;
2341 bsb
= (struct bitmap_super_s
*)(((char*)super
)+MAX_SB_SIZE
);
2342 bmspace
= calc_bitmap_size(bsb
, 4096) >> 9;
2343 } else if (__le32_to_cpu(super
->feature_map
) & MD_FEATURE_PPL
) {
2344 bmspace
= __le16_to_cpu(super
->ppl
.size
);
2347 /* Allow space for bad block log */
2348 if (super
->bblog_size
)
2349 bbspace
= __le16_to_cpu(super
->bblog_size
);
2351 if (st
->minor_version
< 0)
2352 /* not specified, so time to set default */
2353 st
->minor_version
= 2;
2355 if (data_offset
== INVALID_SECTORS
)
2356 data_offset
= st
->data_offset
;
2358 if (data_offset
!= INVALID_SECTORS
)
2359 switch(st
->minor_version
) {
2361 return devsize
- data_offset
- 8*2 - bbspace
;
2364 return devsize
- data_offset
;
2371 switch(st
->minor_version
) {
2374 return ((devsize
- 8*2 - bbspace
) & ~(4*2-1));
2376 /* at start, 4K for superblock and possible bitmap */
2377 return devsize
- 4*2 - bbspace
;
2379 /* 4k from start, 4K for superblock and possible bitmap */
2380 return devsize
- (4+4)*2 - bbspace
;
2386 add_internal_bitmap1(struct supertype
*st
,
2387 int *chunkp
, int delay
, int write_behind
,
2388 unsigned long long size
,
2389 int may_change
, int major
)
2392 * If not may_change, then this is a 'Grow' without sysfs support for
2393 * bitmaps, and the bitmap must fit after the superblock at 1K offset.
2394 * If may_change, then this is create or a Grow with sysfs syupport,
2395 * and we can put the bitmap wherever we like.
2397 * size is in sectors, chunk is in bytes !!!
2400 unsigned long long bits
;
2401 unsigned long long max_bits
;
2402 unsigned long long min_chunk
;
2404 long bbl_offset
, bbl_size
;
2405 unsigned long long chunk
= *chunkp
;
2409 struct mdp_superblock_1
*sb
= st
->sb
;
2410 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
2413 if (__le64_to_cpu(sb
->data_size
) == 0)
2415 * Must be creating the array, else data_size
2419 switch(st
->minor_version
) {
2422 * either 3K after the superblock (when hot-add),
2423 * or some amount of space before.
2427 * We are creating array, so we *know* how much room has
2433 choose_bm_space(__le64_to_cpu(sb
->size
)) + bbl_size
;
2435 room
= __le64_to_cpu(sb
->super_offset
)
2436 - __le64_to_cpu(sb
->data_offset
)
2437 - __le64_to_cpu(sb
->data_size
);
2438 bbl_size
= __le16_to_cpu(sb
->bblog_size
);
2441 bbl_offset
= (__s32
)__le32_to_cpu(sb
->bblog_offset
);
2442 if (bbl_size
< -bbl_offset
)
2443 bbl_size
= -bbl_offset
;
2446 (room
< 3*2 && __le32_to_cpu(sb
->max_dev
) <= 384)) {
2451 offset
= 0; /* means movable offset */
2456 case 2: /* between superblock and data */
2461 choose_bm_space(__le64_to_cpu(sb
->size
)) + bbl_size
;
2463 room
= __le64_to_cpu(sb
->data_offset
)
2464 - __le64_to_cpu(sb
->super_offset
);
2465 bbl_size
= __le16_to_cpu(sb
->bblog_size
);
2468 __le32_to_cpu(sb
->bblog_offset
) + bbl_size
;
2473 room
-= 2; /* Leave 1K for superblock */
2477 room
-= 4*2; /* leave 4K for superblock */
2487 if (chunk
== UnSet
&& room
> 128*2)
2488 /* Limit to 128K of bitmap when chunk size not requested */
2492 /* No room for a bitmap */
2495 max_bits
= (room
* 512 - sizeof(bitmap_super_t
)) * 8;
2497 min_chunk
= 4096; /* sub-page chunks don't work yet.. */
2498 bits
= (size
*512)/min_chunk
+1;
2499 while (bits
> max_bits
) {
2503 if (chunk
== UnSet
) {
2504 /* For practical purpose, 64Meg is a good
2505 * default chunk size for internal bitmaps.
2508 if (chunk
< 64*1024*1024)
2509 chunk
= 64*1024*1024;
2510 } else if (chunk
< min_chunk
)
2511 return -EINVAL
; /* chunk size too small */
2512 if (chunk
== 0) /* rounding problem */
2516 /* start bitmap on a 4K boundary with enough space for
2519 bits
= (size
*512) / chunk
+ 1;
2520 room
= ((bits
+7)/8 + sizeof(bitmap_super_t
) +4095)/4096;
2521 room
*= 8; /* convert 4K blocks to sectors */
2522 offset
= -room
- bbl_size
;
2525 sb
->bitmap_offset
= (int32_t)__cpu_to_le32(offset
);
2527 sb
->feature_map
= __cpu_to_le32(__le32_to_cpu(sb
->feature_map
) |
2528 MD_FEATURE_BITMAP_OFFSET
);
2529 memset(bms
, 0, sizeof(*bms
));
2530 bms
->magic
= __cpu_to_le32(BITMAP_MAGIC
);
2531 bms
->version
= __cpu_to_le32(major
);
2532 uuid_from_super1(st
, uuid
);
2533 memcpy(bms
->uuid
, uuid
, 16);
2534 bms
->chunksize
= __cpu_to_le32(chunk
);
2535 bms
->daemon_sleep
= __cpu_to_le32(delay
);
2536 bms
->sync_size
= __cpu_to_le64(size
);
2537 bms
->write_behind
= __cpu_to_le32(write_behind
);
2538 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2540 sb
->feature_map
= __cpu_to_le32(__le32_to_cpu(sb
->feature_map
) |
2541 MD_FEATURE_BITMAP_VERSIONED
);
2542 if (st
->cluster_name
) {
2543 len
= sizeof(bms
->cluster_name
);
2544 strncpy((char *)bms
->cluster_name
, st
->cluster_name
, len
);
2545 bms
->cluster_name
[len
- 1] = '\0';
2552 static int locate_bitmap1(struct supertype
*st
, int fd
, int node_num
)
2554 unsigned long long offset
;
2555 struct mdp_superblock_1
*sb
;
2560 if (st
->ss
->load_super(st
, fd
, NULL
))
2561 return -1; /* no error I hope... */
2566 if ((__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
2570 offset
= __le64_to_cpu(sb
->super_offset
);
2571 offset
+= (int32_t) __le32_to_cpu(sb
->bitmap_offset
) * (node_num
+ 1);
2574 lseek64(fd
, offset
<<9, 0);
2578 static int write_bitmap1(struct supertype
*st
, int fd
, enum bitmap_update update
)
2580 struct mdp_superblock_1
*sb
= st
->sb
;
2581 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
)+MAX_SB_SIZE
);
2584 int towrite
, n
, len
;
2585 struct align_fd afd
;
2587 unsigned long long total_bm_space
, bm_space_per_node
;
2591 /* update cluster name */
2592 if (st
->cluster_name
) {
2593 len
= sizeof(bms
->cluster_name
);
2594 memset((char *)bms
->cluster_name
, 0, len
);
2595 strncpy((char *)bms
->cluster_name
,
2596 st
->cluster_name
, len
);
2597 bms
->cluster_name
[len
- 1] = '\0';
2601 /* cluster md only supports superblock 1.2 now */
2602 if (st
->minor_version
!= 2 &&
2603 bms
->version
== BITMAP_MAJOR_CLUSTERED
) {
2604 pr_err("Warning: cluster md only works with superblock 1.2\n");
2608 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
) {
2609 if (__cpu_to_le32(st
->nodes
) < bms
->nodes
) {
2611 * Since the nodes num is not increased, no
2612 * need to check the space enough or not,
2613 * just update bms->nodes
2615 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2620 * no need to change bms->nodes for other
2624 pr_err("Warning: --nodes option is only suitable for clustered bitmap\n");
2629 * Each node has an independent bitmap, it is necessary to
2630 * calculate the space is enough or not, first get how many
2631 * bytes for the total bitmap
2633 bm_space_per_node
= calc_bitmap_size(bms
, 4096);
2635 total_bm_space
= 512 * (__le64_to_cpu(sb
->data_offset
) -
2636 __le64_to_cpu(sb
->super_offset
));
2637 /* leave another 4k for superblock */
2638 total_bm_space
= total_bm_space
- 4096;
2640 if (bm_space_per_node
* st
->nodes
> total_bm_space
) {
2641 pr_err("Warning: The max num of nodes can't exceed %llu\n",
2642 total_bm_space
/ bm_space_per_node
);
2646 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2655 locate_bitmap1(st
, fd
, 0);
2657 if (posix_memalign(&buf
, 4096, 4096))
2661 /* Only the bitmap[0] should resync
2662 * whole device on initial assembly
2665 memset(buf
, 0x00, 4096);
2667 memset(buf
, 0xff, 4096);
2668 memcpy(buf
, (char *)bms
, sizeof(bitmap_super_t
));
2671 * use 4096 boundary if bitmap_offset is aligned
2672 * with 8 sectors, then it should compatible with
2675 if (__le32_to_cpu(sb
->bitmap_offset
) & 7)
2676 towrite
= calc_bitmap_size(bms
, 512);
2678 towrite
= calc_bitmap_size(bms
, 4096);
2679 while (towrite
> 0) {
2683 n
= awrite(&afd
, buf
, n
);
2689 memset(buf
, 0x00, 4096);
2691 memset(buf
, 0xff, 4096);
2698 } while (++i
< __le32_to_cpu(bms
->nodes
));
2704 static void free_super1(struct supertype
*st
)
2710 struct devinfo
*di
= st
->info
;
2711 st
->info
= di
->next
;
2719 static int validate_geometry1(struct supertype
*st
, int level
,
2720 int layout
, int raiddisks
,
2721 int *chunk
, unsigned long long size
,
2722 unsigned long long data_offset
,
2723 char *subdev
, unsigned long long *freesize
,
2724 int consistency_policy
, int verbose
)
2726 unsigned long long ldsize
, devsize
;
2728 unsigned long long headroom
;
2731 if (level
== LEVEL_CONTAINER
) {
2733 pr_err("1.x metadata does not support containers\n");
2736 if (*chunk
== UnSet
)
2737 *chunk
= DEFAULT_CHUNK
;
2742 if (st
->minor_version
< 0)
2743 /* not specified, so time to set default */
2744 st
->minor_version
= 2;
2746 fd
= open(subdev
, O_RDONLY
|O_EXCL
, 0);
2749 pr_err("super1.x cannot open %s: %s\n",
2750 subdev
, strerror(errno
));
2754 if (!get_dev_size(fd
, subdev
, &ldsize
)) {
2760 devsize
= ldsize
>> 9;
2766 /* creating: allow suitable space for bitmap or PPL */
2767 bmspace
= consistency_policy
== CONSISTENCY_POLICY_PPL
?
2768 choose_ppl_space((*chunk
)*2) : choose_bm_space(devsize
);
2770 if (data_offset
== INVALID_SECTORS
)
2771 data_offset
= st
->data_offset
;
2772 if (data_offset
== INVALID_SECTORS
)
2773 switch (st
->minor_version
) {
2779 /* Choose data offset appropriate for this device
2780 * and use as default for whole array.
2781 * The data_offset must allow for bitmap space
2782 * and base metadata, should allow for some headroom
2783 * for reshape, and should be rounded to multiple
2785 * Headroom is limited to 128M, but aim for about 0.1%
2787 headroom
= 128*1024*2;
2788 while ((headroom
<< 10) > devsize
&&
2790 headroom
/ 2 >= ((unsigned)(*chunk
)*2)*2))
2792 data_offset
= 12*2 + bmspace
+ headroom
;
2793 #define ONE_MEG (2*1024)
2794 if (data_offset
> ONE_MEG
)
2795 data_offset
= (data_offset
/ ONE_MEG
) * ONE_MEG
;
2798 if (st
->data_offset
== INVALID_SECTORS
)
2799 st
->data_offset
= data_offset
;
2800 switch(st
->minor_version
) {
2801 case 0: /* metadata at end. Round down and subtract space to reserve */
2802 devsize
= (devsize
& ~(4ULL*2-1));
2803 /* space for metadata, bblog, bitmap/ppl */
2804 devsize
-= 8*2 + 8 + bmspace
;
2808 devsize
-= data_offset
;
2811 *freesize
= devsize
;
2815 void *super1_make_v0(struct supertype
*st
, struct mdinfo
*info
, mdp_super_t
*sb0
)
2817 /* Create a v1.0 superblock based on 'info'*/
2819 struct mdp_superblock_1
*sb
;
2821 unsigned long long offset
;
2823 if (posix_memalign(&ret
, 4096, 1024) != 0)
2826 memset(ret
, 0, 1024);
2827 sb
->magic
= __cpu_to_le32(MD_SB_MAGIC
);
2828 sb
->major_version
= __cpu_to_le32(1);
2830 copy_uuid(sb
->set_uuid
, info
->uuid
, super1
.swapuuid
);
2831 sprintf(sb
->set_name
, "%d", sb0
->md_minor
);
2832 sb
->ctime
= __cpu_to_le32(info
->array
.ctime
+1);
2833 sb
->level
= __cpu_to_le32(info
->array
.level
);
2834 sb
->layout
= __cpu_to_le32(info
->array
.layout
);
2835 sb
->size
= __cpu_to_le64(info
->component_size
);
2836 sb
->chunksize
= __cpu_to_le32(info
->array
.chunk_size
/512);
2837 sb
->raid_disks
= __cpu_to_le32(info
->array
.raid_disks
);
2838 if (info
->array
.level
> 0)
2839 sb
->data_size
= sb
->size
;
2841 sb
->data_size
= st
->ss
->avail_size(st
, st
->devsize
/512, 0);
2842 sb
->resync_offset
= MaxSector
;
2843 sb
->max_dev
= __cpu_to_le32(MD_SB_DISKS
);
2844 sb
->dev_number
= __cpu_to_le32(info
->disk
.number
);
2845 sb
->utime
= __cpu_to_le64(info
->array
.utime
);
2847 offset
= st
->devsize
/512 - 8*2;
2849 sb
->super_offset
= __cpu_to_le64(offset
);
2850 //*(__u64*)(st->other + 128 + 8 + 8) = __cpu_to_le64(offset);
2852 random_uuid(sb
->device_uuid
);
2854 for (i
= 0; i
< MD_SB_DISKS
; i
++) {
2855 int state
= sb0
->disks
[i
].state
;
2856 sb
->dev_roles
[i
] = MD_DISK_ROLE_SPARE
;
2857 if ((state
& (1<<MD_DISK_SYNC
)) &&
2858 !(state
& (1<<MD_DISK_FAULTY
)))
2859 sb
->dev_roles
[i
] = __cpu_to_le16(sb0
->disks
[i
].raid_disk
);
2861 sb
->sb_csum
= calc_sb_1_csum(sb
);
2865 struct superswitch super1
= {
2866 .examine_super
= examine_super1
,
2867 .brief_examine_super
= brief_examine_super1
,
2868 .export_examine_super
= export_examine_super1
,
2869 .detail_super
= detail_super1
,
2870 .brief_detail_super
= brief_detail_super1
,
2871 .export_detail_super
= export_detail_super1
,
2872 .write_init_super
= write_init_super1
,
2873 .validate_geometry
= validate_geometry1
,
2874 .add_to_super
= add_to_super1
,
2875 .examine_badblocks
= examine_badblocks_super1
,
2876 .copy_metadata
= copy_metadata1
,
2877 .write_init_ppl
= write_init_ppl1
,
2878 .match_home
= match_home1
,
2879 .uuid_from_super
= uuid_from_super1
,
2880 .getinfo_super
= getinfo_super1
,
2881 .container_content
= container_content1
,
2882 .update_super
= update_super1
,
2883 .init_super
= init_super1
,
2884 .store_super
= store_super1
,
2885 .compare_super
= compare_super1
,
2886 .load_super
= load_super1
,
2887 .match_metadata_desc
= match_metadata_desc1
,
2888 .avail_size
= avail_size1
,
2889 .add_internal_bitmap
= add_internal_bitmap1
,
2890 .locate_bitmap
= locate_bitmap1
,
2891 .write_bitmap
= write_bitmap1
,
2892 .free_super
= free_super1
,
2893 #if __BYTE_ORDER == BIG_ENDIAN