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 badblock list */
93 __u16 bblog_size
; /* number of sectors reserved for badblock list */
94 __u32 bblog_offset
; /* sector offset from superblock to bblog, signed */
96 /* array state information - 64 bytes */
97 __u64 utime
; /* 40 bits second, 24 bits 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 #define MULTIPLE_PPL_AREA_SIZE_SUPER1 (1024 * 1024) /* Size of the whole
127 /* feature_map bits */
128 #define MD_FEATURE_BITMAP_OFFSET 1
129 #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and
132 #define MD_FEATURE_RESHAPE_ACTIVE 4
133 #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */
134 #define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an
135 * active device with same 'role'.
136 * 'recovery_offset' is also set.
138 #define MD_FEATURE_RESHAPE_BACKWARDS 32 /* Reshape doesn't change number
139 * of devices, but is going
142 #define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */
143 #define MD_FEATURE_BITMAP_VERSIONED 256 /* bitmap version number checked properly */
144 #define MD_FEATURE_JOURNAL 512 /* support write journal */
145 #define MD_FEATURE_PPL 1024 /* support PPL */
146 #define MD_FEATURE_MUTLIPLE_PPLS 2048 /* support for multiple PPLs */
147 #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \
148 |MD_FEATURE_RECOVERY_OFFSET \
149 |MD_FEATURE_RESHAPE_ACTIVE \
150 |MD_FEATURE_BAD_BLOCKS \
151 |MD_FEATURE_REPLACEMENT \
152 |MD_FEATURE_RESHAPE_BACKWARDS \
153 |MD_FEATURE_NEW_OFFSET \
154 |MD_FEATURE_BITMAP_VERSIONED \
155 |MD_FEATURE_JOURNAL \
157 |MD_FEATURE_MULTIPLE_PPLS \
160 static int role_from_sb(struct mdp_superblock_1
*sb
)
165 d
= __le32_to_cpu(sb
->dev_number
);
166 if (d
< __le32_to_cpu(sb
->max_dev
))
167 role
= __le16_to_cpu(sb
->dev_roles
[d
]);
169 role
= MD_DISK_ROLE_SPARE
;
173 /* return how many bytes are needed for bitmap, for cluster-md each node
174 * should have it's own bitmap */
175 static unsigned int calc_bitmap_size(bitmap_super_t
*bms
, unsigned int boundary
)
177 unsigned long long bits
, bytes
;
179 bits
= bitmap_bits(__le64_to_cpu(bms
->sync_size
),
180 __le32_to_cpu(bms
->chunksize
));
181 bytes
= (bits
+7) >> 3;
182 bytes
+= sizeof(bitmap_super_t
);
183 bytes
= ROUND_UP(bytes
, boundary
);
188 static unsigned int calc_sb_1_csum(struct mdp_superblock_1
* sb
)
190 unsigned int disk_csum
, csum
;
191 unsigned long long newcsum
;
192 int size
= sizeof(*sb
) + __le32_to_cpu(sb
->max_dev
)*2;
193 unsigned int *isuper
= (unsigned int*)sb
;
195 /* make sure I can count... */
196 if (offsetof(struct mdp_superblock_1
,data_offset
) != 128 ||
197 offsetof(struct mdp_superblock_1
, utime
) != 192 ||
198 sizeof(struct mdp_superblock_1
) != 256) {
199 fprintf(stderr
, "WARNING - superblock isn't sized correctly\n");
202 disk_csum
= sb
->sb_csum
;
205 for (; size
>=4; size
-= 4 ) {
206 newcsum
+= __le32_to_cpu(*isuper
);
211 newcsum
+= __le16_to_cpu(*(unsigned short*) isuper
);
213 csum
= (newcsum
& 0xffffffff) + (newcsum
>> 32);
214 sb
->sb_csum
= disk_csum
;
215 return __cpu_to_le32(csum
);
219 * Information related to file descriptor used for aligned reads/writes.
220 * Cache the block size.
227 static void init_afd(struct align_fd
*afd
, int fd
)
230 if (!get_dev_sector_size(afd
->fd
, NULL
, (unsigned int *)&afd
->blk_sz
))
234 static char abuf
[4096+4096];
236 static int aread(struct align_fd
*afd
, void *buf
, int len
)
239 * On devices with a 4K sector size, we need to read
240 * the full sector and copy relevant bits into
249 if (!bsize
|| bsize
> 4096 || len
> 4096) {
251 fprintf(stderr
, "WARNING - aread() called with invalid block size\n");
254 b
= ROUND_UP_PTR((char *)abuf
, 4096);
256 for (iosize
= 0; iosize
< len
; iosize
+= bsize
)
258 n
= read(afd
->fd
, b
, iosize
);
261 lseek(afd
->fd
, len
- n
, 1);
268 static int awrite(struct align_fd
*afd
, void *buf
, int len
)
271 * On devices with a 4K sector size, we need to write
272 * the full sector. We pre-read if the sector is larger
274 * The address must be sector-aligned.
281 if (!bsize
|| bsize
> 4096 || len
> 4096) {
283 fprintf(stderr
, "WARNING - awrite() called with invalid block size\n");
286 b
= ROUND_UP_PTR((char *)abuf
, 4096);
288 for (iosize
= 0; iosize
< len
; iosize
+= bsize
)
292 n
= read(afd
->fd
, b
, iosize
);
295 lseek(afd
->fd
, -n
, 1);
299 n
= write(afd
->fd
, b
, iosize
);
302 lseek(afd
->fd
, len
- n
, 1);
306 static inline unsigned int md_feature_any_ppl_on(__u32 feature_map
)
308 return ((__cpu_to_le32(feature_map
) &
309 (MD_FEATURE_PPL
| MD_FEATURE_MUTLIPLE_PPLS
)));
312 static inline unsigned int choose_ppl_space(int chunk
)
314 return (PPL_HEADER_SIZE
>> 9) + (chunk
> 128*2 ? chunk
: 128*2);
317 static void examine_super1(struct supertype
*st
, char *homehost
)
319 struct mdp_superblock_1
*sb
= st
->sb
;
320 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
)+MAX_SB_SIZE
);
327 int l
= homehost
? strlen(homehost
) : 0;
329 unsigned long long sb_offset
;
332 printf(" Magic : %08x\n", __le32_to_cpu(sb
->magic
));
333 printf(" Version : 1");
334 sb_offset
= __le64_to_cpu(sb
->super_offset
);
337 else if (sb_offset
<= 8)
341 printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb
->feature_map
));
342 printf(" Array UUID : ");
343 for (i
=0; i
<16; i
++) {
344 if ((i
&3)==0 && i
!= 0) printf(":");
345 printf("%02x", sb
->set_uuid
[i
]);
348 printf(" Name : %.32s", sb
->set_name
);
349 if (l
> 0 && l
< 32 &&
350 sb
->set_name
[l
] == ':' &&
351 strncmp(sb
->set_name
, homehost
, l
) == 0)
352 printf(" (local to host %s)", homehost
);
354 if (bms
->nodes
> 0 &&
355 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
356 printf(" Cluster Name : %-64s\n", bms
->cluster_name
);
357 atime
= __le64_to_cpu(sb
->ctime
) & 0xFFFFFFFFFFULL
;
358 printf(" Creation Time : %.24s\n", ctime(&atime
));
359 c
=map_num(pers
, __le32_to_cpu(sb
->level
));
360 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
361 printf(" Raid Devices : %d\n", __le32_to_cpu(sb
->raid_disks
));
363 printf(" Avail Dev Size : %llu sectors%s\n",
364 (unsigned long long)__le64_to_cpu(sb
->data_size
),
365 human_size(__le64_to_cpu(sb
->data_size
)<<9));
366 if (__le32_to_cpu(sb
->level
) > 0) {
367 int ddsks
= 0, ddsks_denom
= 1;
368 switch(__le32_to_cpu(sb
->level
)) {
369 case 1: ddsks
=1;break;
371 case 5: ddsks
= __le32_to_cpu(sb
->raid_disks
)-1; break;
372 case 6: ddsks
= __le32_to_cpu(sb
->raid_disks
)-2; break;
374 layout
= __le32_to_cpu(sb
->layout
);
375 ddsks
= __le32_to_cpu(sb
->raid_disks
);
376 ddsks_denom
= (layout
&255) * ((layout
>>8)&255);
379 long long asize
= __le64_to_cpu(sb
->size
);
380 asize
= (asize
<< 9) * ddsks
/ ddsks_denom
;
381 printf(" Array Size : %llu KiB%s\n",
382 asize
>> 10, human_size(asize
));
384 if (sb
->size
!= sb
->data_size
)
385 printf(" Used Dev Size : %llu sectors%s\n",
386 (unsigned long long)__le64_to_cpu(sb
->size
),
387 human_size(__le64_to_cpu(sb
->size
)<<9));
390 printf(" Data Offset : %llu sectors\n",
391 (unsigned long long)__le64_to_cpu(sb
->data_offset
));
392 if (sb
->new_offset
&&
393 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_NEW_OFFSET
)) {
394 unsigned long long offset
= __le64_to_cpu(sb
->data_offset
);
395 offset
+= (signed)(int32_t)__le32_to_cpu(sb
->new_offset
);
396 printf(" New Offset : %llu sectors\n", offset
);
398 printf(" Super Offset : %llu sectors\n",
399 (unsigned long long)__le64_to_cpu(sb
->super_offset
));
400 if (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_RECOVERY_OFFSET
)
401 printf("Recovery Offset : %llu sectors\n",
402 (unsigned long long)__le64_to_cpu(sb
->recovery_offset
));
404 st
->ss
->getinfo_super(st
, &info
, NULL
);
405 if (info
.space_after
!= 1 &&
406 !(__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_NEW_OFFSET
))
407 printf(" Unused Space : before=%llu sectors, after=%llu sectors\n",
408 info
.space_before
, info
.space_after
);
410 printf(" State : %s\n",
411 (__le64_to_cpu(sb
->resync_offset
)+1)? "active":"clean");
412 printf(" Device UUID : ");
413 for (i
=0; i
<16; i
++) {
414 if ((i
&3)==0 && i
!= 0)
416 printf("%02x", sb
->device_uuid
[i
]);
420 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
421 printf("Internal Bitmap : %ld sectors from superblock\n",
422 (long)(int32_t)__le32_to_cpu(sb
->bitmap_offset
));
423 } else if (md_feature_any_ppl_on(sb
->feature_map
)) {
424 printf(" PPL : %u sectors at offset %d sectors from superblock\n",
425 __le16_to_cpu(sb
->ppl
.size
),
426 __le16_to_cpu(sb
->ppl
.offset
));
428 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
)) {
429 printf(" Reshape pos'n : %llu%s\n", (unsigned long long)
430 __le64_to_cpu(sb
->reshape_position
)/2,
431 human_size(__le64_to_cpu(sb
->reshape_position
)<<9));
432 if (__le32_to_cpu(sb
->delta_disks
)) {
433 printf(" Delta Devices : %d",
434 __le32_to_cpu(sb
->delta_disks
));
435 printf(" (%d->%d)\n",
436 __le32_to_cpu(sb
->raid_disks
) -
437 __le32_to_cpu(sb
->delta_disks
),
438 __le32_to_cpu(sb
->raid_disks
));
439 if ((int)__le32_to_cpu(sb
->delta_disks
) < 0)
440 delta_extra
= -__le32_to_cpu(sb
->delta_disks
);
442 if (__le32_to_cpu(sb
->new_level
) != __le32_to_cpu(sb
->level
)) {
443 c
= map_num(pers
, __le32_to_cpu(sb
->new_level
));
444 printf(" New Level : %s\n", c
?c
:"-unknown-");
446 if (__le32_to_cpu(sb
->new_layout
) !=
447 __le32_to_cpu(sb
->layout
)) {
448 if (__le32_to_cpu(sb
->level
) == 5) {
449 c
= map_num(r5layout
,
450 __le32_to_cpu(sb
->new_layout
));
451 printf(" New Layout : %s\n", c
?c
:"-unknown-");
453 if (__le32_to_cpu(sb
->level
) == 6) {
454 c
= map_num(r6layout
,
455 __le32_to_cpu(sb
->new_layout
));
456 printf(" New Layout : %s\n", c
?c
:"-unknown-");
458 if (__le32_to_cpu(sb
->level
) == 10) {
459 printf(" New Layout :");
460 print_r10_layout(__le32_to_cpu(sb
->new_layout
));
464 if (__le32_to_cpu(sb
->new_chunk
) !=
465 __le32_to_cpu(sb
->chunksize
))
466 printf(" New Chunksize : %dK\n",
467 __le32_to_cpu(sb
->new_chunk
)/2);
472 if (sb
->devflags
& WriteMostly1
)
473 printf(" write-mostly");
474 if (sb
->devflags
& FailFast1
)
479 atime
= __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
;
480 printf(" Update Time : %.24s\n", ctime(&atime
));
482 if (sb
->bblog_size
&& sb
->bblog_offset
) {
483 printf(" Bad Block Log : %d entries available at offset %ld sectors",
484 __le16_to_cpu(sb
->bblog_size
)*512/8,
485 (long)(int32_t)__le32_to_cpu(sb
->bblog_offset
));
486 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
487 printf(" - bad blocks present.");
491 if (calc_sb_1_csum(sb
) == sb
->sb_csum
)
492 printf(" Checksum : %x - correct\n",
493 __le32_to_cpu(sb
->sb_csum
));
495 printf(" Checksum : %x - expected %x\n",
496 __le32_to_cpu(sb
->sb_csum
),
497 __le32_to_cpu(calc_sb_1_csum(sb
)));
498 printf(" Events : %llu\n",
499 (unsigned long long)__le64_to_cpu(sb
->events
));
501 if (__le32_to_cpu(sb
->level
) == 5) {
502 c
= map_num(r5layout
, __le32_to_cpu(sb
->layout
));
503 printf(" Layout : %s\n", c
?c
:"-unknown-");
505 if (__le32_to_cpu(sb
->level
) == 6) {
506 c
= map_num(r6layout
, __le32_to_cpu(sb
->layout
));
507 printf(" Layout : %s\n", c
?c
:"-unknown-");
509 if (__le32_to_cpu(sb
->level
) == 10) {
510 int lo
= __le32_to_cpu(sb
->layout
);
512 print_r10_layout(lo
);
515 switch(__le32_to_cpu(sb
->level
)) {
521 printf(" Chunk Size : %dK\n",
522 __le32_to_cpu(sb
->chunksize
)/2);
525 printf(" Rounding : %dK\n",
526 __le32_to_cpu(sb
->chunksize
)/2);
533 /* This turns out to just be confusing */
534 printf(" Array Slot : %d (", __le32_to_cpu(sb
->dev_number
));
535 for (i
= __le32_to_cpu(sb
->max_dev
); i
> 0 ; i
--)
536 if (__le16_to_cpu(sb
->dev_roles
[i
-1]) != MD_DISK_ROLE_SPARE
)
538 for (d
= 0; d
< i
; d
++) {
539 int role
= __le16_to_cpu(sb
->dev_roles
[d
]);
542 if (role
== MD_DISK_ROLE_SPARE
)
545 if(role
== MD_DISK_ROLE_FAULTY
)
552 printf(" Device Role : ");
553 role
= role_from_sb(sb
);
554 if (role
>= MD_DISK_ROLE_FAULTY
)
556 else if (role
== MD_DISK_ROLE_JOURNAL
)
558 else if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_REPLACEMENT
))
559 printf("Replacement device %d\n", role
);
561 printf("Active device %d\n", role
);
563 printf(" Array State : ");
564 for (d
= 0; d
< __le32_to_cpu(sb
->raid_disks
) + delta_extra
; d
++) {
567 for (i
= 0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
568 unsigned int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
582 /* This is confusing too */
584 for (i
= 0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
585 int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
586 if (role
== MD_DISK_ROLE_FAULTY
)
590 printf(" %d failed", faulty
);
592 printf(" ('A' == active, '.' == missing, 'R' == replacing)");
596 static void brief_examine_super1(struct supertype
*st
, int verbose
)
598 struct mdp_superblock_1
*sb
= st
->sb
;
600 unsigned long long sb_offset
;
602 char *c
= map_num(pers
, __le32_to_cpu(sb
->level
));
604 nm
= strchr(sb
->set_name
, ':');
607 else if (sb
->set_name
[0])
619 printf(" level=%s", c
);
620 sb_offset
= __le64_to_cpu(sb
->super_offset
);
622 printf(" metadata=1.1 ");
623 else if (sb_offset
<= 8)
624 printf(" metadata=1.2 ");
626 printf(" metadata=1.0 ");
628 printf("num-devices=%d ", __le32_to_cpu(sb
->raid_disks
));
630 for (i
= 0; i
< 16; i
++) {
631 if ((i
&3)==0 && i
!= 0)
633 printf("%02x", sb
->set_uuid
[i
]);
635 if (sb
->set_name
[0]) {
637 print_quoted(sb
->set_name
);
642 static void export_examine_super1(struct supertype
*st
)
644 struct mdp_superblock_1
*sb
= st
->sb
;
649 printf("MD_LEVEL=%s\n", map_num(pers
, __le32_to_cpu(sb
->level
)));
650 printf("MD_DEVICES=%d\n", __le32_to_cpu(sb
->raid_disks
));
651 for (i
= 0; i
< 32; i
++)
652 if (sb
->set_name
[i
] == '\n' || sb
->set_name
[i
] == '\0') {
657 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
658 if (__le32_to_cpu(sb
->level
) > 0) {
659 int ddsks
= 0, ddsks_denom
= 1;
660 switch(__le32_to_cpu(sb
->level
)) {
666 ddsks
= __le32_to_cpu(sb
->raid_disks
)-1;
669 ddsks
= __le32_to_cpu(sb
->raid_disks
)-2;
672 layout
= __le32_to_cpu(sb
->layout
);
673 ddsks
= __le32_to_cpu(sb
->raid_disks
);
674 ddsks_denom
= (layout
&255) * ((layout
>>8)&255);
677 long long asize
= __le64_to_cpu(sb
->size
);
678 asize
= (asize
<< 9) * ddsks
/ ddsks_denom
;
679 printf("MD_ARRAY_SIZE=%s\n",
680 human_size_brief(asize
, JEDEC
));
684 for (i
= 0; i
< 16; i
++) {
685 if ((i
&3) == 0 && i
!= 0)
687 printf("%02x", sb
->set_uuid
[i
]);
690 printf("MD_UPDATE_TIME=%llu\n",
691 __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
);
692 printf("MD_DEV_UUID=");
693 for (i
= 0; i
< 16; i
++) {
694 if ((i
&3) == 0 && i
!= 0)
696 printf("%02x", sb
->device_uuid
[i
]);
699 printf("MD_EVENTS=%llu\n",
700 (unsigned long long)__le64_to_cpu(sb
->events
));
703 static int copy_metadata1(struct supertype
*st
, int from
, int to
)
705 /* Read superblock. If it looks good, write it out.
706 * Then if a bitmap is present, copy that.
707 * And if a bad-block-list is present, copy that too.
710 unsigned long long dsize
, sb_offset
;
711 const int bufsize
= 4*1024;
712 struct mdp_superblock_1 super
, *sb
;
714 if (posix_memalign(&buf
, 4096, bufsize
) != 0)
717 if (!get_dev_size(from
, NULL
, &dsize
))
723 switch(st
->minor_version
) {
727 sb_offset
&= ~(4*2-1);
739 if (lseek64(from
, sb_offset
<< 9, 0) < 0LL)
741 if (read(from
, buf
, bufsize
) != bufsize
)
745 super
= *sb
; // save most of sb for when we reuse buf
747 if (__le32_to_cpu(super
.magic
) != MD_SB_MAGIC
||
748 __le32_to_cpu(super
.major_version
) != 1 ||
749 __le64_to_cpu(super
.super_offset
) != sb_offset
||
750 calc_sb_1_csum(sb
) != super
.sb_csum
)
753 if (lseek64(to
, sb_offset
<< 9, 0) < 0LL)
755 if (write(to
, buf
, bufsize
) != bufsize
)
758 if (super
.feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
759 unsigned long long bitmap_offset
= sb_offset
;
760 int bytes
= 4096; // just an estimate.
762 struct align_fd afrom
, ato
;
764 init_afd(&afrom
, from
);
767 bitmap_offset
+= (int32_t)__le32_to_cpu(super
.bitmap_offset
);
769 if (lseek64(from
, bitmap_offset
<<9, 0) < 0)
771 if (lseek64(to
, bitmap_offset
<<9, 0) < 0)
774 for (written
= 0; written
< bytes
; ) {
775 int n
= bytes
- written
;
778 if (aread(&afrom
, buf
, n
) != n
)
781 /* have the header, can calculate
782 * correct bitmap bytes */
785 bytes
= calc_bitmap_size(bms
, 512);
789 if (awrite(&ato
, buf
, n
) != n
)
795 if (super
.bblog_size
!= 0 &&
796 __le16_to_cpu(super
.bblog_size
) <= 100 &&
797 super
.bblog_offset
!= 0 &&
798 (super
.feature_map
& __le32_to_cpu(MD_FEATURE_BAD_BLOCKS
))) {
799 /* There is a bad block log */
800 unsigned long long bb_offset
= sb_offset
;
801 int bytes
= __le16_to_cpu(super
.bblog_size
) * 512;
803 struct align_fd afrom
, ato
;
805 init_afd(&afrom
, from
);
808 bb_offset
+= (int32_t)__le32_to_cpu(super
.bblog_offset
);
810 if (lseek64(from
, bb_offset
<<9, 0) < 0)
812 if (lseek64(to
, bb_offset
<<9, 0) < 0)
815 for (written
= 0; written
< bytes
; ) {
816 int n
= bytes
- written
;
819 if (aread(&afrom
, buf
, n
) != n
)
822 if (awrite(&ato
, buf
, n
) != n
)
836 static void detail_super1(struct supertype
*st
, char *homehost
)
838 struct mdp_superblock_1
*sb
= st
->sb
;
839 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
841 int l
= homehost
? strlen(homehost
) : 0;
843 printf(" Name : %.32s", sb
->set_name
);
844 if (l
> 0 && l
< 32 && sb
->set_name
[l
] == ':' &&
845 strncmp(sb
->set_name
, homehost
, l
) == 0)
846 printf(" (local to host %s)", homehost
);
847 if (bms
->nodes
> 0 &&
848 (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
849 printf("\n Cluster Name : %-64s", bms
->cluster_name
);
850 printf("\n UUID : ");
851 for (i
= 0; i
< 16; i
++) {
852 if ((i
&3) == 0 && i
!= 0)
854 printf("%02x", sb
->set_uuid
[i
]);
856 printf("\n Events : %llu\n\n",
857 (unsigned long long)__le64_to_cpu(sb
->events
));
860 static void brief_detail_super1(struct supertype
*st
)
862 struct mdp_superblock_1
*sb
= st
->sb
;
865 if (sb
->set_name
[0]) {
867 print_quoted(sb
->set_name
);
870 for (i
= 0; i
< 16; i
++) {
871 if ((i
& 3) == 0 && i
!= 0)
873 printf("%02x", sb
->set_uuid
[i
]);
877 static void export_detail_super1(struct supertype
*st
)
879 struct mdp_superblock_1
*sb
= st
->sb
;
883 for (i
= 0; i
< 32; i
++)
884 if (sb
->set_name
[i
] == '\n' || sb
->set_name
[i
] == '\0') {
889 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
892 static int examine_badblocks_super1(struct supertype
*st
, int fd
, char *devname
)
894 struct mdp_superblock_1
*sb
= st
->sb
;
895 unsigned long long offset
;
900 if (!sb
->bblog_size
|| __le16_to_cpu(sb
->bblog_size
) > 100 ||
902 printf("No bad-blocks list configured on %s\n", devname
);
905 if ((sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
)) == 0) {
906 printf("Bad-blocks list is empty in %s\n", devname
);
910 size
= __le16_to_cpu(sb
->bblog_size
)* 512;
911 if (posix_memalign((void**)&bbl
, 4096, size
) != 0) {
912 pr_err("could not allocate badblocks list\n");
915 offset
= __le64_to_cpu(sb
->super_offset
) +
916 (int)__le32_to_cpu(sb
->bblog_offset
);
918 if (lseek64(fd
, offset
, 0) < 0) {
919 pr_err("Cannot seek to bad-blocks list\n");
922 if (read(fd
, bbl
, size
) != size
) {
923 pr_err("Cannot read bad-blocks list\n");
926 /* 64bits per entry. 10 bits is block-count, 54 bits is block
927 * offset. Blocks are sectors unless bblog->shift makes them bigger
930 printf("Bad-blocks on %s:\n", devname
);
931 for (i
= 0; i
< size
/8; i
++, bbp
++) {
932 __u64 bb
= __le64_to_cpu(*bbp
);
933 int count
= bb
& 0x3ff;
934 unsigned long long sector
= bb
>> 10;
939 sector
<<= sb
->bblog_shift
;
940 count
<<= sb
->bblog_shift
;
942 printf("%20llu for %d sectors\n", sector
, count
);
947 static int match_home1(struct supertype
*st
, char *homehost
)
949 struct mdp_superblock_1
*sb
= st
->sb
;
950 int l
= homehost
? strlen(homehost
) : 0;
952 return (l
> 0 && l
< 32 && sb
->set_name
[l
] == ':' &&
953 strncmp(sb
->set_name
, homehost
, l
) == 0);
956 static void uuid_from_super1(struct supertype
*st
, int uuid
[4])
958 struct mdp_superblock_1
*super
= st
->sb
;
959 char *cuuid
= (char*)uuid
;
961 for (i
= 0; i
< 16; i
++)
962 cuuid
[i
] = super
->set_uuid
[i
];
965 static void getinfo_super1(struct supertype
*st
, struct mdinfo
*info
, char *map
)
967 struct mdp_superblock_1
*sb
= st
->sb
;
968 struct bitmap_super_s
*bsb
= (void*)(((char*)sb
)+MAX_SB_SIZE
);
969 struct misc_dev_info
*misc
=
970 (void*)(((char*)sb
)+MAX_SB_SIZE
+BM_SUPER_SIZE
);
974 unsigned int map_disks
= info
->array
.raid_disks
;
975 unsigned long long super_offset
;
976 unsigned long long data_size
;
978 memset(info
, 0, sizeof(*info
));
979 info
->array
.major_version
= 1;
980 info
->array
.minor_version
= st
->minor_version
;
981 info
->array
.patch_version
= 0;
982 info
->array
.raid_disks
= __le32_to_cpu(sb
->raid_disks
);
983 info
->array
.level
= __le32_to_cpu(sb
->level
);
984 info
->array
.layout
= __le32_to_cpu(sb
->layout
);
985 info
->array
.md_minor
= -1;
986 info
->array
.ctime
= __le64_to_cpu(sb
->ctime
);
987 info
->array
.utime
= __le64_to_cpu(sb
->utime
);
988 info
->array
.chunk_size
= __le32_to_cpu(sb
->chunksize
)*512;
990 (__le64_to_cpu(sb
->resync_offset
) == MaxSector
) ? 1 : 0;
992 super_offset
= __le64_to_cpu(sb
->super_offset
);
993 info
->data_offset
= __le64_to_cpu(sb
->data_offset
);
994 info
->component_size
= __le64_to_cpu(sb
->size
);
995 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
996 info
->bitmap_offset
= (int32_t)__le32_to_cpu(sb
->bitmap_offset
);
997 if (__le32_to_cpu(bsb
->nodes
) > 1)
998 info
->array
.state
|= (1 << MD_SB_CLUSTERED
);
999 } else if (md_feature_any_ppl_on(sb
->feature_map
)) {
1000 info
->ppl_offset
= __le16_to_cpu(sb
->ppl
.offset
);
1001 info
->ppl_size
= __le16_to_cpu(sb
->ppl
.size
);
1002 info
->ppl_sector
= super_offset
+ info
->ppl_offset
;
1005 info
->disk
.major
= 0;
1006 info
->disk
.minor
= 0;
1007 info
->disk
.number
= __le32_to_cpu(sb
->dev_number
);
1008 if (__le32_to_cpu(sb
->dev_number
) >= __le32_to_cpu(sb
->max_dev
) ||
1009 __le32_to_cpu(sb
->dev_number
) >= MAX_DEVS
)
1010 role
= MD_DISK_ROLE_FAULTY
;
1012 role
= __le16_to_cpu(sb
->dev_roles
[__le32_to_cpu(sb
->dev_number
)]);
1014 if (info
->array
.level
<= 0)
1015 data_size
= __le64_to_cpu(sb
->data_size
);
1017 data_size
= __le64_to_cpu(sb
->size
);
1018 if (info
->data_offset
< super_offset
) {
1019 unsigned long long end
;
1020 info
->space_before
= info
->data_offset
;
1023 if (sb
->bblog_offset
&& sb
->bblog_size
) {
1024 unsigned long long bboffset
= super_offset
;
1025 bboffset
+= (int32_t)__le32_to_cpu(sb
->bblog_offset
);
1030 if (super_offset
+ info
->bitmap_offset
+ info
->ppl_offset
< end
)
1031 end
= super_offset
+ info
->bitmap_offset
+
1034 if (info
->data_offset
+ data_size
< end
)
1035 info
->space_after
= end
- data_size
- info
->data_offset
;
1037 info
->space_after
= 0;
1039 unsigned long long earliest
;
1040 earliest
= super_offset
+ (32+4)*2; /* match kernel */
1041 if (info
->bitmap_offset
> 0) {
1042 unsigned long long bmend
= info
->bitmap_offset
;
1043 unsigned long long size
= calc_bitmap_size(bsb
, 4096);
1046 if (bmend
> earliest
)
1048 } else if (info
->ppl_offset
> 0) {
1049 unsigned long long pplend
;
1051 pplend
= info
->ppl_offset
+ info
->ppl_size
;
1052 if (pplend
> earliest
)
1055 if (sb
->bblog_offset
&& sb
->bblog_size
) {
1056 unsigned long long bbend
= super_offset
;
1057 bbend
+= (int32_t)__le32_to_cpu(sb
->bblog_offset
);
1058 bbend
+= __le16_to_cpu(sb
->bblog_size
);
1059 if (bbend
> earliest
)
1062 if (earliest
< info
->data_offset
)
1063 info
->space_before
= info
->data_offset
- earliest
;
1065 info
->space_before
= 0;
1066 info
->space_after
= misc
->device_size
- data_size
-
1069 if (info
->space_before
== 0 && info
->space_after
== 0) {
1070 /* It will look like we don't support data_offset changes,
1071 * be we do - it's just that there is no room.
1072 * A change that reduced the number of devices should
1073 * still be allowed, so set the otherwise useless value of '1'
1075 info
->space_after
= 1;
1078 info
->disk
.raid_disk
= -1;
1080 case MD_DISK_ROLE_SPARE
:
1081 /* spare: not active, not sync, not faulty */
1082 info
->disk
.state
= 0;
1084 case MD_DISK_ROLE_FAULTY
:
1085 info
->disk
.state
= (1 << MD_DISK_FAULTY
); /* faulty */
1087 case MD_DISK_ROLE_JOURNAL
:
1088 info
->disk
.state
= (1 << MD_DISK_JOURNAL
);
1089 info
->disk
.raid_disk
= role
;
1090 /* journal uses all 4kB blocks*/
1091 info
->space_after
= (misc
->device_size
- info
->data_offset
) % 8;
1094 info
->disk
.state
= 6; /* active and in sync */
1095 info
->disk
.raid_disk
= role
;
1097 if (sb
->devflags
& WriteMostly1
)
1098 info
->disk
.state
|= (1 << MD_DISK_WRITEMOSTLY
);
1099 if (sb
->devflags
& FailFast1
)
1100 info
->disk
.state
|= (1 << MD_DISK_FAILFAST
);
1101 info
->events
= __le64_to_cpu(sb
->events
);
1102 sprintf(info
->text_version
, "1.%d", st
->minor_version
);
1103 info
->safe_mode_delay
= 200;
1105 memcpy(info
->uuid
, sb
->set_uuid
, 16);
1107 strncpy(info
->name
, sb
->set_name
, 32);
1110 if ((__le32_to_cpu(sb
->feature_map
)&MD_FEATURE_REPLACEMENT
)) {
1111 info
->disk
.state
&= ~(1 << MD_DISK_SYNC
);
1112 info
->disk
.state
|= 1 << MD_DISK_REPLACEMENT
;
1115 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET
))
1116 info
->recovery_start
= __le32_to_cpu(sb
->recovery_offset
);
1118 info
->recovery_start
= MaxSector
;
1120 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
)) {
1121 info
->reshape_active
= 1;
1122 if ((sb
->feature_map
& __le32_to_cpu(MD_FEATURE_NEW_OFFSET
)) &&
1123 sb
->new_offset
!= 0)
1124 info
->reshape_active
|= RESHAPE_NO_BACKUP
;
1125 info
->reshape_progress
= __le64_to_cpu(sb
->reshape_position
);
1126 info
->new_level
= __le32_to_cpu(sb
->new_level
);
1127 info
->delta_disks
= __le32_to_cpu(sb
->delta_disks
);
1128 info
->new_layout
= __le32_to_cpu(sb
->new_layout
);
1129 info
->new_chunk
= __le32_to_cpu(sb
->new_chunk
)<<9;
1130 if (info
->delta_disks
< 0)
1131 info
->array
.raid_disks
-= info
->delta_disks
;
1133 info
->reshape_active
= 0;
1135 info
->recovery_blocked
= info
->reshape_active
;
1138 for (i
=0; i
<map_disks
; i
++)
1140 for (i
= 0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
1141 role
= __le16_to_cpu(sb
->dev_roles
[i
]);
1142 if (/*role == MD_DISK_ROLE_SPARE || */role
< (unsigned) info
->array
.raid_disks
) {
1144 if (map
&& role
< map_disks
)
1149 info
->array
.working_disks
= working
;
1151 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_JOURNAL
)) {
1152 info
->journal_device_required
= 1;
1153 info
->consistency_policy
= CONSISTENCY_POLICY_JOURNAL
;
1154 } else if (md_feature_any_ppl_on(sb
->feature_map
)) {
1155 info
->consistency_policy
= CONSISTENCY_POLICY_PPL
;
1156 } else if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET
)) {
1157 info
->consistency_policy
= CONSISTENCY_POLICY_BITMAP
;
1158 } else if (info
->array
.level
<= 0) {
1159 info
->consistency_policy
= CONSISTENCY_POLICY_NONE
;
1161 info
->consistency_policy
= CONSISTENCY_POLICY_RESYNC
;
1164 info
->journal_clean
= 0;
1167 static struct mdinfo
*container_content1(struct supertype
*st
, char *subarray
)
1169 struct mdinfo
*info
;
1174 info
= xmalloc(sizeof(*info
));
1175 getinfo_super1(st
, info
, NULL
);
1179 static int update_super1(struct supertype
*st
, struct mdinfo
*info
,
1180 char *update
, char *devname
, int verbose
,
1181 int uuid_set
, char *homehost
)
1183 /* NOTE: for 'assemble' and 'force' we need to return non-zero
1184 * if any change was made. For others, the return value is
1188 struct mdp_superblock_1
*sb
= st
->sb
;
1189 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
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
;
1271 sb
->max_dev
= __cpu_to_le32(max
+1);
1274 random_uuid(sb
->device_uuid
);
1276 sb
->dev_roles
[i
] = __cpu_to_le16(info
->disk
.raid_disk
);
1278 fd
= open(devname
, O_RDONLY
);
1280 unsigned long long ds
;
1281 get_dev_size(fd
, devname
, &ds
);
1284 if (__le64_to_cpu(sb
->super_offset
) <
1285 __le64_to_cpu(sb
->data_offset
)) {
1286 sb
->data_size
= __cpu_to_le64(
1287 ds
- __le64_to_cpu(sb
->data_offset
));
1290 ds
&= ~(unsigned long long)(4*2-1);
1291 sb
->super_offset
= __cpu_to_le64(ds
);
1292 sb
->data_size
= __cpu_to_le64(
1293 ds
- __le64_to_cpu(sb
->data_offset
));
1296 } else if (strcmp(update
, "linear-grow-update") == 0) {
1297 int max
= __le32_to_cpu(sb
->max_dev
);
1298 sb
->raid_disks
= __cpu_to_le32(info
->array
.raid_disks
);
1299 if (info
->array
.raid_disks
> max
) {
1300 sb
->max_dev
= __cpu_to_le32(max
+1);
1302 sb
->dev_roles
[info
->disk
.number
] =
1303 __cpu_to_le16(info
->disk
.raid_disk
);
1304 } else if (strcmp(update
, "resync") == 0) {
1305 /* make sure resync happens */
1306 sb
->resync_offset
= 0ULL;
1307 } else if (strcmp(update
, "uuid") == 0) {
1308 copy_uuid(sb
->set_uuid
, info
->uuid
, super1
.swapuuid
);
1310 if (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
)
1311 memcpy(bms
->uuid
, sb
->set_uuid
, 16);
1312 } else if (strcmp(update
, "no-bitmap") == 0) {
1313 sb
->feature_map
&= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
);
1314 } else if (strcmp(update
, "bbl") == 0) {
1315 /* only possible if there is room after the bitmap, or if
1316 * there is no bitmap
1318 unsigned long long sb_offset
= __le64_to_cpu(sb
->super_offset
);
1319 unsigned long long data_offset
= __le64_to_cpu(sb
->data_offset
);
1320 long bitmap_offset
= 0;
1321 long bm_sectors
= 0;
1324 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1325 bitmap_offset
= (long)__le32_to_cpu(sb
->bitmap_offset
);
1326 bm_sectors
= calc_bitmap_size(bms
, 4096) >> 9;
1327 } else if (md_feature_any_ppl_on(sb
->feature_map
)) {
1328 bitmap_offset
= (long)__le16_to_cpu(sb
->ppl
.offset
);
1329 bm_sectors
= (long)__le16_to_cpu(sb
->ppl
.size
);
1332 if (sb_offset
< data_offset
) {
1334 * 1.1 or 1.2. Put bbl after bitmap leaving
1338 bb_offset
= sb_offset
+ 8;
1339 if (bm_sectors
&& bitmap_offset
> 0)
1340 bb_offset
= bitmap_offset
+ bm_sectors
;
1341 while (bb_offset
< (long)sb_offset
+ 8 + 32*2 &&
1342 bb_offset
+ 8+8 <= (long)data_offset
)
1343 /* too close to bitmap, and room to grow */
1345 if (bb_offset
+ 8 <= (long)data_offset
) {
1346 sb
->bblog_size
= __cpu_to_le16(8);
1347 sb
->bblog_offset
= __cpu_to_le32(bb_offset
);
1350 /* 1.0 - Put bbl just before super block */
1351 if (bm_sectors
&& bitmap_offset
< 0)
1352 space
= -bitmap_offset
- bm_sectors
;
1354 space
= sb_offset
- data_offset
-
1355 __le64_to_cpu(sb
->data_size
);
1357 sb
->bblog_size
= __cpu_to_le16(8);
1358 sb
->bblog_offset
= __cpu_to_le32((unsigned)-8);
1361 } else if (strcmp(update
, "no-bbl") == 0) {
1362 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
))
1363 pr_err("Cannot remove active bbl from %s\n",devname
);
1366 sb
->bblog_shift
= 0;
1367 sb
->bblog_offset
= 0;
1369 } else if (strcmp(update
, "force-no-bbl") == 0) {
1370 sb
->feature_map
&= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS
);
1372 sb
->bblog_shift
= 0;
1373 sb
->bblog_offset
= 0;
1374 } else if (strcmp(update
, "ppl") == 0) {
1375 unsigned long long sb_offset
= __le64_to_cpu(sb
->super_offset
);
1376 unsigned long long data_offset
= __le64_to_cpu(sb
->data_offset
);
1377 unsigned long long data_size
= __le64_to_cpu(sb
->data_size
);
1378 long bb_offset
= __le32_to_cpu(sb
->bblog_offset
);
1382 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1383 pr_err("Cannot add PPL to array with bitmap\n");
1387 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_JOURNAL
)) {
1388 pr_err("Cannot add PPL to array with journal\n");
1392 if (sb_offset
< data_offset
) {
1394 space
= bb_offset
- 8;
1396 space
= data_offset
- sb_offset
- 8;
1399 offset
= -(sb_offset
- data_offset
- data_size
);
1400 if (offset
< INT16_MIN
)
1402 space
= -(offset
- bb_offset
);
1405 if (space
< (PPL_HEADER_SIZE
>> 9) + 8) {
1406 pr_err("Not enough space to add ppl\n");
1410 if (space
>= (MULTIPLE_PPL_AREA_SIZE_SUPER1
>> 9)) {
1411 space
= (MULTIPLE_PPL_AREA_SIZE_SUPER1
>> 9);
1413 int optimal_space
= choose_ppl_space(
1414 __le32_to_cpu(sb
->chunksize
));
1415 if (space
> optimal_space
)
1416 space
= optimal_space
;
1417 if (space
> UINT16_MAX
)
1421 sb
->ppl
.offset
= __cpu_to_le16(offset
);
1422 sb
->ppl
.size
= __cpu_to_le16(space
);
1423 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_PPL
);
1424 } else if (strcmp(update
, "no-ppl") == 0) {
1425 sb
->feature_map
&= ~__cpu_to_le32(MD_FEATURE_PPL
|
1426 MD_FEATURE_MUTLIPLE_PPLS
);
1427 } else if (strcmp(update
, "name") == 0) {
1428 if (info
->name
[0] == 0)
1429 sprintf(info
->name
, "%d", info
->array
.md_minor
);
1430 memset(sb
->set_name
, 0, sizeof(sb
->set_name
));
1432 strchr(info
->name
, ':') == NULL
&&
1433 strlen(homehost
)+1+strlen(info
->name
) < 32) {
1434 strcpy(sb
->set_name
, homehost
);
1435 strcat(sb
->set_name
, ":");
1436 strcat(sb
->set_name
, info
->name
);
1440 namelen
= min((int)strlen(info
->name
),
1441 (int)sizeof(sb
->set_name
) - 1);
1442 memcpy(sb
->set_name
, info
->name
, namelen
);
1443 memset(&sb
->set_name
[namelen
], '\0',
1444 sizeof(sb
->set_name
) - namelen
);
1446 } else if (strcmp(update
, "devicesize") == 0 &&
1447 __le64_to_cpu(sb
->super_offset
) <
1448 __le64_to_cpu(sb
->data_offset
)) {
1449 /* set data_size to device size less data_offset */
1450 struct misc_dev_info
*misc
= (struct misc_dev_info
*)
1451 (st
->sb
+ MAX_SB_SIZE
+ BM_SUPER_SIZE
);
1452 sb
->data_size
= __cpu_to_le64(
1453 misc
->device_size
- __le64_to_cpu(sb
->data_offset
));
1454 } else if (strncmp(update
, "revert-reshape", 14) == 0) {
1456 if (!(sb
->feature_map
&
1457 __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
)))
1458 pr_err("No active reshape to revert on %s\n",
1462 unsigned long long reshape_sectors
;
1465 /* If the reshape hasn't started, just stop it.
1466 * It is conceivable that a stripe was modified but
1467 * the metadata not updated. In that case the backup
1468 * should have been used to get passed the critical stage.
1469 * If that couldn't happen, the "-nobackup" version
1472 if (strcmp(update
, "revert-reshape-nobackup") == 0 &&
1473 sb
->reshape_position
== 0 &&
1474 (__le32_to_cpu(sb
->delta_disks
) > 0 ||
1475 (__le32_to_cpu(sb
->delta_disks
) == 0 &&
1476 !(sb
->feature_map
& __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS
))))) {
1477 sb
->feature_map
&= ~__cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE
);
1478 sb
->raid_disks
= __cpu_to_le32(__le32_to_cpu(sb
->raid_disks
) -
1479 __le32_to_cpu(sb
->delta_disks
));
1480 sb
->delta_disks
= 0;
1483 /* reshape_position is a little messy.
1484 * Its value must be a multiple of the larger
1485 * chunk size, and of the "after" data disks.
1486 * So when reverting we need to change it to
1487 * be a multiple of the new "after" data disks,
1488 * which is the old "before".
1489 * If it isn't already a multiple of 'before',
1490 * the only thing we could do would be
1491 * copy some block around on the disks, which
1492 * is easy to get wrong.
1493 * So we reject a revert-reshape unless the
1494 * alignment is good.
1496 if (__le32_to_cpu(sb
->level
) >= 4 &&
1497 __le32_to_cpu(sb
->level
) <= 6) {
1499 __le64_to_cpu(sb
->reshape_position
);
1500 reshape_chunk
= __le32_to_cpu(sb
->new_chunk
);
1501 reshape_chunk
*= __le32_to_cpu(sb
->raid_disks
) -
1502 __le32_to_cpu(sb
->delta_disks
) -
1503 (__le32_to_cpu(sb
->level
)==6 ? 2 : 1);
1504 if (reshape_sectors
% reshape_chunk
) {
1505 pr_err("Reshape position is not suitably aligned.\n");
1506 pr_err("Try normal assembly and stop again\n");
1511 __cpu_to_le32(__le32_to_cpu(sb
->raid_disks
) -
1512 __le32_to_cpu(sb
->delta_disks
));
1513 if (sb
->delta_disks
== 0)
1514 sb
->feature_map
^= __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS
);
1516 sb
->delta_disks
= __cpu_to_le32(-__le32_to_cpu(sb
->delta_disks
));
1518 temp
= sb
->new_layout
;
1519 sb
->new_layout
= sb
->layout
;
1522 temp
= sb
->new_chunk
;
1523 sb
->new_chunk
= sb
->chunksize
;
1524 sb
->chunksize
= temp
;
1526 if (sb
->feature_map
&
1527 __cpu_to_le32(MD_FEATURE_NEW_OFFSET
)) {
1529 (int32_t)__le32_to_cpu(sb
->new_offset
);
1530 sb
->data_offset
= __cpu_to_le64(__le64_to_cpu(sb
->data_offset
) + offset_delta
);
1531 sb
->new_offset
= __cpu_to_le32(-offset_delta
);
1532 sb
->data_size
= __cpu_to_le64(__le64_to_cpu(sb
->data_size
) - offset_delta
);
1536 } else if (strcmp(update
, "_reshape_progress") == 0)
1537 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
1538 else if (strcmp(update
, "writemostly") == 0)
1539 sb
->devflags
|= WriteMostly1
;
1540 else if (strcmp(update
, "readwrite") == 0)
1541 sb
->devflags
&= ~WriteMostly1
;
1542 else if (strcmp(update
, "failfast") == 0)
1543 sb
->devflags
|= FailFast1
;
1544 else if (strcmp(update
, "nofailfast") == 0)
1545 sb
->devflags
&= ~FailFast1
;
1549 sb
->sb_csum
= calc_sb_1_csum(sb
);
1554 static int init_super1(struct supertype
*st
, mdu_array_info_t
*info
,
1555 struct shape
*s
, char *name
, char *homehost
,
1556 int *uuid
, unsigned long long data_offset
)
1558 struct mdp_superblock_1
*sb
;
1563 if (posix_memalign((void**)&sb
, 4096, SUPER1_SIZE
) != 0) {
1564 pr_err("could not allocate superblock\n");
1567 memset(sb
, 0, SUPER1_SIZE
);
1571 /* zeroing superblock */
1575 spares
= info
->working_disks
- info
->active_disks
;
1576 if (info
->raid_disks
+ spares
> MAX_DEVS
) {
1577 pr_err("too many devices requested: %d+%d > %d\n",
1578 info
->raid_disks
, spares
, MAX_DEVS
);
1582 sb
->magic
= __cpu_to_le32(MD_SB_MAGIC
);
1583 sb
->major_version
= __cpu_to_le32(1);
1584 sb
->feature_map
= 0;
1588 copy_uuid(sb
->set_uuid
, uuid
, super1
.swapuuid
);
1590 random_uuid(sb
->set_uuid
);;
1592 if (name
== NULL
|| *name
== 0) {
1593 sprintf(defname
, "%d", info
->md_minor
);
1597 strchr(name
, ':')== NULL
&&
1598 strlen(homehost
)+1+strlen(name
) < 32) {
1599 strcpy(sb
->set_name
, homehost
);
1600 strcat(sb
->set_name
, ":");
1601 strcat(sb
->set_name
, name
);
1605 namelen
= min((int)strlen(name
),
1606 (int)sizeof(sb
->set_name
) - 1);
1607 memcpy(sb
->set_name
, name
, namelen
);
1608 memset(&sb
->set_name
[namelen
], '\0',
1609 sizeof(sb
->set_name
) - namelen
);
1612 sb
->ctime
= __cpu_to_le64((unsigned long long)time(0));
1613 sb
->level
= __cpu_to_le32(info
->level
);
1614 sb
->layout
= __cpu_to_le32(info
->layout
);
1615 sb
->size
= __cpu_to_le64(s
->size
*2ULL);
1616 sb
->chunksize
= __cpu_to_le32(info
->chunk_size
>>9);
1617 sb
->raid_disks
= __cpu_to_le32(info
->raid_disks
);
1619 sb
->data_offset
= __cpu_to_le64(data_offset
);
1620 sb
->data_size
= __cpu_to_le64(0);
1621 sb
->super_offset
= __cpu_to_le64(0);
1622 sb
->recovery_offset
= __cpu_to_le64(0);
1624 sb
->utime
= sb
->ctime
;
1625 sb
->events
= __cpu_to_le64(1);
1626 if (info
->state
& (1<<MD_SB_CLEAN
))
1627 sb
->resync_offset
= MaxSector
;
1629 sb
->resync_offset
= 0;
1630 sbsize
= sizeof(struct mdp_superblock_1
) +
1631 2 * (info
->raid_disks
+ spares
);
1632 sbsize
= ROUND_UP(sbsize
, 512);
1634 __cpu_to_le32((sbsize
- sizeof(struct mdp_superblock_1
)) / 2);
1636 memset(sb
->dev_roles
, 0xff,
1637 MAX_SB_SIZE
- sizeof(struct mdp_superblock_1
));
1639 if (s
->consistency_policy
== CONSISTENCY_POLICY_PPL
)
1640 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_PPL
);
1648 long long data_offset
;
1649 mdu_disk_info_t disk
;
1650 struct devinfo
*next
;
1653 /* Add a device to the superblock being created */
1654 static int add_to_super1(struct supertype
*st
, mdu_disk_info_t
*dk
,
1655 int fd
, char *devname
, unsigned long long data_offset
)
1657 struct mdp_superblock_1
*sb
= st
->sb
;
1658 __u16
*rp
= sb
->dev_roles
+ dk
->number
;
1659 struct devinfo
*di
, **dip
;
1662 dk_state
= dk
->state
& ~(1<<MD_DISK_FAILFAST
);
1663 if ((dk_state
& (1<<MD_DISK_ACTIVE
)) &&
1664 (dk_state
& (1<<MD_DISK_SYNC
)))/* active, sync */
1665 *rp
= __cpu_to_le16(dk
->raid_disk
);
1666 else if (dk_state
& (1<<MD_DISK_JOURNAL
))
1667 *rp
= MD_DISK_ROLE_JOURNAL
;
1668 else if ((dk_state
& ~(1<<MD_DISK_ACTIVE
)) == 0)
1669 /* active or idle -> spare */
1670 *rp
= MD_DISK_ROLE_SPARE
;
1672 *rp
= MD_DISK_ROLE_FAULTY
;
1674 if (dk
->number
>= (int)__le32_to_cpu(sb
->max_dev
) &&
1675 __le32_to_cpu(sb
->max_dev
) < MAX_DEVS
)
1676 sb
->max_dev
= __cpu_to_le32(dk
->number
+1);
1678 sb
->dev_number
= __cpu_to_le32(dk
->number
);
1679 sb
->devflags
= 0; /* don't copy another disks flags */
1680 sb
->sb_csum
= calc_sb_1_csum(sb
);
1682 dip
= (struct devinfo
**)&st
->info
;
1684 dip
= &(*dip
)->next
;
1685 di
= xmalloc(sizeof(struct devinfo
));
1687 di
->devname
= devname
;
1689 di
->data_offset
= data_offset
;
1696 static int locate_bitmap1(struct supertype
*st
, int fd
, int node_num
);
1698 static int store_super1(struct supertype
*st
, int fd
)
1700 struct mdp_superblock_1
*sb
= st
->sb
;
1701 unsigned long long sb_offset
;
1702 struct align_fd afd
;
1704 unsigned long long dsize
;
1706 if (!get_dev_size(fd
, NULL
, &dsize
))
1717 * Calculate the position of the superblock.
1718 * It is always aligned to a 4K boundary and
1719 * depending on minor_version, it can be:
1720 * 0: At least 8K, but less than 12K, from end of device
1721 * 1: At start of device
1722 * 2: 4K from start of device.
1724 switch(st
->minor_version
) {
1728 sb_offset
&= ~(4*2-1);
1740 if (sb_offset
!= __le64_to_cpu(sb
->super_offset
) &&
1741 0 != __le64_to_cpu(sb
->super_offset
)
1743 pr_err("internal error - sb_offset is wrong\n");
1747 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL)
1750 sbsize
= ROUND_UP(sizeof(*sb
) + 2 * __le32_to_cpu(sb
->max_dev
), 512);
1752 if (awrite(&afd
, sb
, sbsize
) != sbsize
)
1755 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1756 struct bitmap_super_s
*bm
= (struct bitmap_super_s
*)
1757 (((char*)sb
)+MAX_SB_SIZE
);
1758 if (__le32_to_cpu(bm
->magic
) == BITMAP_MAGIC
) {
1759 locate_bitmap1(st
, fd
, 0);
1760 if (awrite(&afd
, bm
, sizeof(*bm
)) != sizeof(*bm
))
1769 static int load_super1(struct supertype
*st
, int fd
, char *devname
);
1771 static unsigned long choose_bm_space(unsigned long devsize
)
1773 /* if the device is bigger than 8Gig, save 64k for bitmap usage,
1774 * if bigger than 200Gig, save 128k
1775 * NOTE: result must be multiple of 4K else bad things happen
1776 * on 4K-sector devices.
1780 if (devsize
- 64*2 >= 200*1024*1024*2)
1782 if (devsize
- 4*2 > 8*1024*1024*2)
1787 static void free_super1(struct supertype
*st
);
1789 __u32
crc32c_le(__u32 crc
, unsigned char const *p
, size_t len
);
1791 static int write_init_ppl1(struct supertype
*st
, struct mdinfo
*info
, int fd
)
1793 struct mdp_superblock_1
*sb
= st
->sb
;
1795 struct ppl_header
*ppl_hdr
;
1798 /* first clear entire ppl space */
1799 ret
= zero_disk_range(fd
, info
->ppl_sector
, info
->ppl_size
);
1803 ret
= posix_memalign(&buf
, 4096, PPL_HEADER_SIZE
);
1805 pr_err("Failed to allocate PPL header buffer\n");
1809 memset(buf
, 0, PPL_HEADER_SIZE
);
1811 memset(ppl_hdr
->reserved
, 0xff, PPL_HDR_RESERVED
);
1812 ppl_hdr
->signature
= __cpu_to_le32(~crc32c_le(~0, sb
->set_uuid
,
1813 sizeof(sb
->set_uuid
)));
1814 ppl_hdr
->checksum
= __cpu_to_le32(~crc32c_le(~0, buf
, PPL_HEADER_SIZE
));
1816 if (lseek64(fd
, info
->ppl_sector
* 512, SEEK_SET
) < 0) {
1818 perror("Failed to seek to PPL header location");
1821 if (!ret
&& write(fd
, buf
, PPL_HEADER_SIZE
) != PPL_HEADER_SIZE
) {
1823 perror("Write PPL header failed");
1833 #define META_BLOCK_SIZE 4096
1835 static int write_empty_r5l_meta_block(struct supertype
*st
, int fd
)
1837 struct r5l_meta_block
*mb
;
1838 struct mdp_superblock_1
*sb
= st
->sb
;
1839 struct align_fd afd
;
1844 if (posix_memalign((void**)&mb
, 4096, META_BLOCK_SIZE
) != 0) {
1845 pr_err("Could not allocate memory for the meta block.\n");
1849 memset(mb
, 0, META_BLOCK_SIZE
);
1851 mb
->magic
= __cpu_to_le32(R5LOG_MAGIC
);
1852 mb
->version
= R5LOG_VERSION
;
1853 mb
->meta_size
= __cpu_to_le32(sizeof(struct r5l_meta_block
));
1854 mb
->seq
= __cpu_to_le64(random32());
1855 mb
->position
= __cpu_to_le64(0);
1857 crc
= crc32c_le(0xffffffff, sb
->set_uuid
, sizeof(sb
->set_uuid
));
1858 crc
= crc32c_le(crc
, (void *)mb
, META_BLOCK_SIZE
);
1861 if (lseek64(fd
, __le64_to_cpu(sb
->data_offset
) * 512, 0) < 0LL) {
1862 pr_err("cannot seek to offset of the meta block\n");
1866 if (awrite(&afd
, mb
, META_BLOCK_SIZE
) != META_BLOCK_SIZE
) {
1867 pr_err("failed to store write the meta block \n");
1880 static int write_init_super1(struct supertype
*st
)
1882 struct mdp_superblock_1
*sb
= st
->sb
;
1883 struct supertype
*refst
;
1885 unsigned long long bm_space
;
1887 unsigned long long dsize
, array_size
;
1888 unsigned long long sb_offset
;
1889 unsigned long long data_offset
;
1892 for (di
= st
->info
; di
; di
= di
->next
) {
1893 if (di
->disk
.state
& (1 << MD_DISK_JOURNAL
))
1894 sb
->feature_map
|= __cpu_to_le32(MD_FEATURE_JOURNAL
);
1897 for (di
= st
->info
; di
; di
= di
->next
) {
1898 if (di
->disk
.state
& (1 << MD_DISK_FAULTY
))
1903 while (Kill(di
->devname
, NULL
, 0, -1, 1) == 0)
1906 sb
->dev_number
= __cpu_to_le32(di
->disk
.number
);
1907 if (di
->disk
.state
& (1<<MD_DISK_WRITEMOSTLY
))
1908 sb
->devflags
|= WriteMostly1
;
1910 sb
->devflags
&= ~WriteMostly1
;
1911 if (di
->disk
.state
& (1<<MD_DISK_FAILFAST
))
1912 sb
->devflags
|= FailFast1
;
1914 sb
->devflags
&= ~FailFast1
;
1916 random_uuid(sb
->device_uuid
);
1918 if (!(di
->disk
.state
& (1<<MD_DISK_JOURNAL
)))
1921 refst
= dup_super(st
);
1922 if (load_super1(refst
, di
->fd
, NULL
)==0) {
1923 struct mdp_superblock_1
*refsb
= refst
->sb
;
1925 memcpy(sb
->device_uuid
, refsb
->device_uuid
, 16);
1926 if (memcmp(sb
->set_uuid
, refsb
->set_uuid
, 16)==0) {
1927 /* same array, so preserve events and
1929 sb
->events
= refsb
->events
;
1930 /* bugs in 2.6.17 and earlier mean the
1931 * dev_number chosen in Manage must be preserved
1933 if (get_linux_version() >= 2006018)
1934 sb
->dev_number
= refsb
->dev_number
;
1940 if (!get_dev_size(di
->fd
, NULL
, &dsize
)) {
1953 * Calculate the position of the superblock.
1954 * It is always aligned to a 4K boundary and
1955 * depending on minor_version, it can be:
1956 * 0: At least 8K, but less than 12K, from end of device
1957 * 1: At start of device
1958 * 2: 4K from start of device.
1959 * data_offset has already been set.
1961 array_size
= __le64_to_cpu(sb
->size
);
1963 /* work out how much space we left for a bitmap */
1964 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
1965 bitmap_super_t
*bms
= (bitmap_super_t
*)
1966 (((char *)sb
) + MAX_SB_SIZE
);
1967 bm_space
= calc_bitmap_size(bms
, 4096) >> 9;
1968 bm_offset
= (long)__le32_to_cpu(sb
->bitmap_offset
);
1969 } else if (md_feature_any_ppl_on(sb
->feature_map
)) {
1970 bm_space
= MULTIPLE_PPL_AREA_SIZE_SUPER1
>> 9;
1971 if (st
->minor_version
== 0)
1972 bm_offset
= -bm_space
- 8;
1975 sb
->ppl
.offset
= __cpu_to_le16(bm_offset
);
1976 sb
->ppl
.size
= __cpu_to_le16(bm_space
);
1978 bm_space
= choose_bm_space(array_size
);
1982 data_offset
= di
->data_offset
;
1983 if (data_offset
== INVALID_SECTORS
)
1984 data_offset
= st
->data_offset
;
1985 switch(st
->minor_version
) {
1987 /* Add 8 sectors for bad block log */
1989 if (data_offset
== INVALID_SECTORS
)
1993 sb_offset
&= ~(4*2-1);
1994 sb
->data_offset
= __cpu_to_le64(data_offset
);
1995 sb
->super_offset
= __cpu_to_le64(sb_offset
);
1996 if (sb_offset
< array_size
+ bm_space
)
1997 bm_space
= sb_offset
- array_size
;
1998 sb
->data_size
= __cpu_to_le64(sb_offset
- bm_space
);
1999 if (bm_space
>= 8) {
2000 sb
->bblog_size
= __cpu_to_le16(8);
2001 sb
->bblog_offset
= __cpu_to_le32((unsigned)-8);
2006 sb_offset
= st
->minor_version
== 2 ? 8 : 0;
2007 sb
->super_offset
= __cpu_to_le64(sb_offset
);
2008 if (data_offset
== INVALID_SECTORS
)
2009 data_offset
= sb_offset
+ 16;
2011 sb
->data_offset
= __cpu_to_le64(data_offset
);
2012 sb
->data_size
= __cpu_to_le64(dsize
- data_offset
);
2013 if (data_offset
>= sb_offset
+bm_offset
+bm_space
+8) {
2014 sb
->bblog_size
= __cpu_to_le16(8);
2015 sb
->bblog_offset
= __cpu_to_le32(bm_offset
+
2017 } else if (data_offset
>= sb_offset
+ 16) {
2018 sb
->bblog_size
= __cpu_to_le16(8);
2019 /* '8' sectors for the bblog, and 'sb_offset'
2020 * because we want offset from superblock, not
2023 sb
->bblog_offset
= __cpu_to_le32(data_offset
-
2028 pr_err("Failed to write invalid metadata format 1.%i to %s\n",
2029 st
->minor_version
, di
->devname
);
2034 * Disable badblock log on clusters, or when
2035 * explicitly requested
2037 if (st
->nodes
> 0 || conf_get_create_info()->bblist
== 0) {
2039 sb
->bblog_offset
= 0;
2042 sb
->sb_csum
= calc_sb_1_csum(sb
);
2043 rv
= store_super1(st
, di
->fd
);
2045 if (rv
== 0 && (di
->disk
.state
& (1 << MD_DISK_JOURNAL
))) {
2046 rv
= write_empty_r5l_meta_block(st
, di
->fd
);
2052 (__le32_to_cpu(sb
->feature_map
) &
2053 MD_FEATURE_BITMAP_OFFSET
)) {
2054 rv
= st
->ss
->write_bitmap(st
, di
->fd
, NodeNumUpdate
);
2055 } else if (rv
== 0 &&
2056 md_feature_any_ppl_on(sb
->feature_map
)) {
2059 st
->ss
->getinfo_super(st
, &info
, NULL
);
2060 rv
= st
->ss
->write_init_ppl(st
, &info
, di
->fd
);
2070 pr_err("Failed to write metadata to %s\n", di
->devname
);
2075 static int compare_super1(struct supertype
*st
, struct supertype
*tst
)
2079 * 0 same, or first was empty, and second was copied
2080 * 1 second had wrong number
2082 * 3 wrong other info
2084 struct mdp_superblock_1
*first
= st
->sb
;
2085 struct mdp_superblock_1
*second
= tst
->sb
;
2087 if (second
->magic
!= __cpu_to_le32(MD_SB_MAGIC
))
2089 if (second
->major_version
!= __cpu_to_le32(1))
2093 if (posix_memalign((void**)&first
, 4096, SUPER1_SIZE
) != 0) {
2094 pr_err("could not allocate superblock\n");
2097 memcpy(first
, second
, SUPER1_SIZE
);
2101 if (memcmp(first
->set_uuid
, second
->set_uuid
, 16)!= 0)
2104 if (first
->ctime
!= second
->ctime
||
2105 first
->level
!= second
->level
||
2106 first
->layout
!= second
->layout
||
2107 first
->size
!= second
->size
||
2108 first
->chunksize
!= second
->chunksize
||
2109 first
->raid_disks
!= second
->raid_disks
)
2114 static int load_super1(struct supertype
*st
, int fd
, char *devname
)
2116 unsigned long long dsize
;
2117 unsigned long long sb_offset
;
2118 struct mdp_superblock_1
*super
;
2120 struct bitmap_super_s
*bsb
;
2121 struct misc_dev_info
*misc
;
2122 struct align_fd afd
;
2128 if (st
->ss
== NULL
|| st
->minor_version
== -1) {
2130 struct supertype tst
;
2131 __u64 bestctime
= 0;
2132 /* guess... choose latest ctime */
2133 memset(&tst
, 0, sizeof(tst
));
2135 for (tst
.minor_version
= 0; tst
.minor_version
<= 2;
2136 tst
.minor_version
++) {
2137 switch(load_super1(&tst
, fd
, devname
)) {
2138 case 0: super
= tst
.sb
;
2139 if (bestvers
== -1 ||
2140 bestctime
< __le64_to_cpu(super
->ctime
)) {
2141 bestvers
= tst
.minor_version
;
2142 bestctime
= __le64_to_cpu(super
->ctime
);
2147 case 1: return 1; /*bad device */
2148 case 2: break; /* bad, try next */
2151 if (bestvers
!= -1) {
2153 tst
.minor_version
= bestvers
;
2155 tst
.max_devs
= MAX_DEVS
;
2156 rv
= load_super1(&tst
, fd
, devname
);
2163 if (!get_dev_size(fd
, devname
, &dsize
))
2169 pr_err("%s is too small for md: size is %llu sectors.\n",
2175 * Calculate the position of the superblock.
2176 * It is always aligned to a 4K boundary and
2177 * depending on minor_version, it can be:
2178 * 0: At least 8K, but less than 12K, from end of device
2179 * 1: At start of device
2180 * 2: 4K from start of device.
2182 switch(st
->minor_version
) {
2186 sb_offset
&= ~(4*2-1);
2198 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL) {
2200 pr_err("Cannot seek to superblock on %s: %s\n",
2201 devname
, strerror(errno
));
2205 if (posix_memalign((void**)&super
, 4096, SUPER1_SIZE
) != 0) {
2206 pr_err("could not allocate superblock\n");
2210 memset(super
, 0, SUPER1_SIZE
);
2212 if (aread(&afd
, super
, MAX_SB_SIZE
) != MAX_SB_SIZE
) {
2214 pr_err("Cannot read superblock on %s\n",
2220 if (__le32_to_cpu(super
->magic
) != MD_SB_MAGIC
) {
2222 pr_err("No super block found on %s (Expected magic %08x, got %08x)\n",
2223 devname
, MD_SB_MAGIC
,
2224 __le32_to_cpu(super
->magic
));
2229 if (__le32_to_cpu(super
->major_version
) != 1) {
2231 pr_err("Cannot interpret superblock on %s - version is %d\n",
2232 devname
, __le32_to_cpu(super
->major_version
));
2236 if (__le64_to_cpu(super
->super_offset
) != sb_offset
) {
2238 pr_err("No superblock found on %s (super_offset is wrong)\n",
2245 bsb
= (struct bitmap_super_s
*)(((char*)super
)+MAX_SB_SIZE
);
2247 misc
= (struct misc_dev_info
*)
2248 (((char*)super
)+MAX_SB_SIZE
+BM_SUPER_SIZE
);
2249 misc
->device_size
= dsize
;
2250 if (st
->data_offset
== INVALID_SECTORS
)
2251 st
->data_offset
= __le64_to_cpu(super
->data_offset
);
2253 /* Now check on the bitmap superblock */
2254 if ((__le32_to_cpu(super
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) == 0)
2256 /* Read the bitmap superblock and make sure it looks
2257 * valid. If it doesn't clear the bit. An --assemble --force
2258 * should get that written out.
2260 locate_bitmap1(st
, fd
, 0);
2261 if (aread(&afd
, bsb
, 512) != 512)
2264 uuid_from_super1(st
, uuid
);
2265 if (__le32_to_cpu(bsb
->magic
) != BITMAP_MAGIC
||
2266 memcmp(bsb
->uuid
, uuid
, 16) != 0)
2271 super
->feature_map
= __cpu_to_le32(__le32_to_cpu(super
->feature_map
)
2272 & ~MD_FEATURE_BITMAP_OFFSET
);
2276 static struct supertype
*match_metadata_desc1(char *arg
)
2278 struct supertype
*st
= xcalloc(1, sizeof(*st
));
2280 st
->container_devnm
[0] = 0;
2282 st
->max_devs
= MAX_DEVS
;
2284 st
->data_offset
= INVALID_SECTORS
;
2285 /* leading zeros can be safely ignored. --detail generates them. */
2288 if (strcmp(arg
, "1.0") == 0 || strcmp(arg
, "1.00") == 0) {
2289 st
->minor_version
= 0;
2292 if (strcmp(arg
, "1.1") == 0 || strcmp(arg
, "1.01") == 0
2294 st
->minor_version
= 1;
2297 if (strcmp(arg
, "1.2") == 0 ||
2298 #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */
2299 strcmp(arg
, "default") == 0 ||
2300 #endif /* DEFAULT_OLD_METADATA */
2301 strcmp(arg
, "1.02") == 0) {
2302 st
->minor_version
= 2;
2305 if (strcmp(arg
, "1") == 0 || strcmp(arg
, "default") == 0) {
2306 st
->minor_version
= -1;
2314 /* find available size on device with this devsize, using
2315 * superblock type st, and reserving 'reserve' sectors for
2318 static __u64
avail_size1(struct supertype
*st
, __u64 devsize
,
2319 unsigned long long data_offset
)
2321 struct mdp_superblock_1
*super
= st
->sb
;
2327 if (__le32_to_cpu(super
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
) {
2328 /* hot-add. allow for actual size of bitmap */
2329 struct bitmap_super_s
*bsb
;
2330 bsb
= (struct bitmap_super_s
*)(((char*)super
)+MAX_SB_SIZE
);
2331 bmspace
= calc_bitmap_size(bsb
, 4096) >> 9;
2332 } else if (md_feature_any_ppl_on(super
->feature_map
)) {
2333 bmspace
= __le16_to_cpu(super
->ppl
.size
);
2336 /* Allow space for bad block log */
2337 if (super
->bblog_size
)
2338 bbspace
= __le16_to_cpu(super
->bblog_size
);
2340 if (st
->minor_version
< 0)
2341 /* not specified, so time to set default */
2342 st
->minor_version
= 2;
2344 if (data_offset
== INVALID_SECTORS
)
2345 data_offset
= st
->data_offset
;
2347 if (data_offset
!= INVALID_SECTORS
)
2348 switch(st
->minor_version
) {
2350 return devsize
- data_offset
- 8*2 - bbspace
;
2353 return devsize
- data_offset
;
2360 switch(st
->minor_version
) {
2363 return ((devsize
- 8*2 - bbspace
) & ~(4*2-1));
2365 /* at start, 4K for superblock and possible bitmap */
2366 return devsize
- 4*2 - bbspace
;
2368 /* 4k from start, 4K for superblock and possible bitmap */
2369 return devsize
- (4+4)*2 - bbspace
;
2375 add_internal_bitmap1(struct supertype
*st
,
2376 int *chunkp
, int delay
, int write_behind
,
2377 unsigned long long size
,
2378 int may_change
, int major
)
2381 * If not may_change, then this is a 'Grow' without sysfs support for
2382 * bitmaps, and the bitmap must fit after the superblock at 1K offset.
2383 * If may_change, then this is create or a Grow with sysfs support,
2384 * and we can put the bitmap wherever we like.
2386 * size is in sectors, chunk is in bytes !!!
2389 unsigned long long bits
;
2390 unsigned long long max_bits
;
2391 unsigned long long min_chunk
;
2393 long bbl_offset
, bbl_size
;
2394 unsigned long long chunk
= *chunkp
;
2398 struct mdp_superblock_1
*sb
= st
->sb
;
2399 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + MAX_SB_SIZE
);
2402 if (__le64_to_cpu(sb
->data_size
) == 0)
2404 * Must be creating the array, else data_size
2408 switch(st
->minor_version
) {
2411 * either 3K after the superblock (when hot-add),
2412 * or some amount of space before.
2416 * We are creating array, so we *know* how much room has
2422 choose_bm_space(__le64_to_cpu(sb
->size
)) + bbl_size
;
2424 room
= __le64_to_cpu(sb
->super_offset
)
2425 - __le64_to_cpu(sb
->data_offset
)
2426 - __le64_to_cpu(sb
->data_size
);
2427 bbl_size
= __le16_to_cpu(sb
->bblog_size
);
2430 bbl_offset
= (__s32
)__le32_to_cpu(sb
->bblog_offset
);
2431 if (bbl_size
< -bbl_offset
)
2432 bbl_size
= -bbl_offset
;
2435 (room
< 3*2 && __le32_to_cpu(sb
->max_dev
) <= 384)) {
2440 offset
= 0; /* means movable offset */
2445 case 2: /* between superblock and data */
2450 choose_bm_space(__le64_to_cpu(sb
->size
)) + bbl_size
;
2452 room
= __le64_to_cpu(sb
->data_offset
)
2453 - __le64_to_cpu(sb
->super_offset
);
2454 bbl_size
= __le16_to_cpu(sb
->bblog_size
);
2457 __le32_to_cpu(sb
->bblog_offset
) + bbl_size
;
2462 room
-= 2; /* Leave 1K for superblock */
2466 room
-= 4*2; /* leave 4K for superblock */
2476 if (chunk
== UnSet
&& room
> 128*2)
2477 /* Limit to 128K of bitmap when chunk size not requested */
2481 /* No room for a bitmap */
2484 max_bits
= (room
* 512 - sizeof(bitmap_super_t
)) * 8;
2486 min_chunk
= 4096; /* sub-page chunks don't work yet.. */
2487 bits
= (size
*512)/min_chunk
+1;
2488 while (bits
> max_bits
) {
2492 if (chunk
== UnSet
) {
2493 /* For practical purpose, 64Meg is a good
2494 * default chunk size for internal bitmaps.
2497 if (chunk
< 64*1024*1024)
2498 chunk
= 64*1024*1024;
2499 } else if (chunk
< min_chunk
)
2500 return -EINVAL
; /* chunk size too small */
2501 if (chunk
== 0) /* rounding problem */
2505 /* start bitmap on a 4K boundary with enough space for
2508 bits
= (size
*512) / chunk
+ 1;
2509 room
= ((bits
+7)/8 + sizeof(bitmap_super_t
) +4095)/4096;
2510 room
*= 8; /* convert 4K blocks to sectors */
2511 offset
= -room
- bbl_size
;
2514 sb
->bitmap_offset
= (int32_t)__cpu_to_le32(offset
);
2516 sb
->feature_map
= __cpu_to_le32(__le32_to_cpu(sb
->feature_map
) |
2517 MD_FEATURE_BITMAP_OFFSET
);
2518 memset(bms
, 0, sizeof(*bms
));
2519 bms
->magic
= __cpu_to_le32(BITMAP_MAGIC
);
2520 bms
->version
= __cpu_to_le32(major
);
2521 uuid_from_super1(st
, uuid
);
2522 memcpy(bms
->uuid
, uuid
, 16);
2523 bms
->chunksize
= __cpu_to_le32(chunk
);
2524 bms
->daemon_sleep
= __cpu_to_le32(delay
);
2525 bms
->sync_size
= __cpu_to_le64(size
);
2526 bms
->write_behind
= __cpu_to_le32(write_behind
);
2527 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2529 sb
->feature_map
= __cpu_to_le32(__le32_to_cpu(sb
->feature_map
) |
2530 MD_FEATURE_BITMAP_VERSIONED
);
2531 if (st
->cluster_name
) {
2532 len
= sizeof(bms
->cluster_name
);
2533 strncpy((char *)bms
->cluster_name
, st
->cluster_name
, len
);
2534 bms
->cluster_name
[len
- 1] = '\0';
2541 static int locate_bitmap1(struct supertype
*st
, int fd
, int node_num
)
2543 unsigned long long offset
;
2544 struct mdp_superblock_1
*sb
;
2549 if (st
->ss
->load_super(st
, fd
, NULL
))
2550 return -1; /* no error I hope... */
2555 if ((__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_BITMAP_OFFSET
))
2559 offset
= __le64_to_cpu(sb
->super_offset
);
2560 offset
+= (int32_t) __le32_to_cpu(sb
->bitmap_offset
) * (node_num
+ 1);
2563 lseek64(fd
, offset
<<9, 0);
2567 static int write_bitmap1(struct supertype
*st
, int fd
, enum bitmap_update update
)
2569 struct mdp_superblock_1
*sb
= st
->sb
;
2570 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
)+MAX_SB_SIZE
);
2573 int towrite
, n
, len
;
2574 struct align_fd afd
;
2576 unsigned long long total_bm_space
, bm_space_per_node
;
2580 /* update cluster name */
2581 if (st
->cluster_name
) {
2582 len
= sizeof(bms
->cluster_name
);
2583 memset((char *)bms
->cluster_name
, 0, len
);
2584 strncpy((char *)bms
->cluster_name
,
2585 st
->cluster_name
, len
);
2586 bms
->cluster_name
[len
- 1] = '\0';
2590 /* cluster md only supports superblock 1.2 now */
2591 if (st
->minor_version
!= 2 &&
2592 bms
->version
== BITMAP_MAJOR_CLUSTERED
) {
2593 pr_err("Warning: cluster md only works with superblock 1.2\n");
2597 if (bms
->version
== BITMAP_MAJOR_CLUSTERED
) {
2598 if (__cpu_to_le32(st
->nodes
) < bms
->nodes
) {
2600 * Since the nodes num is not increased, no
2601 * need to check the space enough or not,
2602 * just update bms->nodes
2604 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2609 * no need to change bms->nodes for other
2613 pr_err("Warning: --nodes option is only suitable for clustered bitmap\n");
2618 * Each node has an independent bitmap, it is necessary to
2619 * calculate the space is enough or not, first get how many
2620 * bytes for the total bitmap
2622 bm_space_per_node
= calc_bitmap_size(bms
, 4096);
2624 total_bm_space
= 512 * (__le64_to_cpu(sb
->data_offset
) -
2625 __le64_to_cpu(sb
->super_offset
));
2626 /* leave another 4k for superblock */
2627 total_bm_space
= total_bm_space
- 4096;
2629 if (bm_space_per_node
* st
->nodes
> total_bm_space
) {
2630 pr_err("Warning: The max num of nodes can't exceed %llu\n",
2631 total_bm_space
/ bm_space_per_node
);
2635 bms
->nodes
= __cpu_to_le32(st
->nodes
);
2644 locate_bitmap1(st
, fd
, 0);
2646 if (posix_memalign(&buf
, 4096, 4096))
2650 /* Only the bitmap[0] should resync
2651 * whole device on initial assembly
2654 memset(buf
, 0x00, 4096);
2656 memset(buf
, 0xff, 4096);
2657 memcpy(buf
, (char *)bms
, sizeof(bitmap_super_t
));
2660 * use 4096 boundary if bitmap_offset is aligned
2661 * with 8 sectors, then it should compatible with
2664 if (__le32_to_cpu(sb
->bitmap_offset
) & 7)
2665 towrite
= calc_bitmap_size(bms
, 512);
2667 towrite
= calc_bitmap_size(bms
, 4096);
2668 while (towrite
> 0) {
2672 n
= awrite(&afd
, buf
, n
);
2678 memset(buf
, 0x00, 4096);
2680 memset(buf
, 0xff, 4096);
2687 } while (++i
< __le32_to_cpu(bms
->nodes
));
2693 static void free_super1(struct supertype
*st
)
2699 struct devinfo
*di
= st
->info
;
2700 st
->info
= di
->next
;
2708 static int validate_geometry1(struct supertype
*st
, int level
,
2709 int layout
, int raiddisks
,
2710 int *chunk
, unsigned long long size
,
2711 unsigned long long data_offset
,
2712 char *subdev
, unsigned long long *freesize
,
2713 int consistency_policy
, int verbose
)
2715 unsigned long long ldsize
, devsize
;
2717 unsigned long long headroom
;
2720 if (level
== LEVEL_CONTAINER
) {
2722 pr_err("1.x metadata does not support containers\n");
2725 if (*chunk
== UnSet
)
2726 *chunk
= DEFAULT_CHUNK
;
2731 if (st
->minor_version
< 0)
2732 /* not specified, so time to set default */
2733 st
->minor_version
= 2;
2735 fd
= open(subdev
, O_RDONLY
|O_EXCL
, 0);
2738 pr_err("super1.x cannot open %s: %s\n",
2739 subdev
, strerror(errno
));
2743 if (!get_dev_size(fd
, subdev
, &ldsize
)) {
2749 devsize
= ldsize
>> 9;
2755 /* creating: allow suitable space for bitmap or PPL */
2756 if (consistency_policy
== CONSISTENCY_POLICY_PPL
)
2757 bmspace
= MULTIPLE_PPL_AREA_SIZE_SUPER1
>> 9;
2759 bmspace
= choose_bm_space(devsize
);
2761 if (data_offset
== INVALID_SECTORS
)
2762 data_offset
= st
->data_offset
;
2763 if (data_offset
== INVALID_SECTORS
)
2764 switch (st
->minor_version
) {
2770 /* Choose data offset appropriate for this device
2771 * and use as default for whole array.
2772 * The data_offset must allow for bitmap space
2773 * and base metadata, should allow for some headroom
2774 * for reshape, and should be rounded to multiple
2776 * Headroom is limited to 128M, but aim for about 0.1%
2778 headroom
= 128*1024*2;
2779 while ((headroom
<< 10) > devsize
&&
2781 headroom
/ 2 >= ((unsigned)(*chunk
)*2)*2))
2783 data_offset
= 12*2 + bmspace
+ headroom
;
2784 #define ONE_MEG (2*1024)
2785 data_offset
= ROUND_UP(data_offset
, ONE_MEG
);
2788 if (st
->data_offset
== INVALID_SECTORS
)
2789 st
->data_offset
= data_offset
;
2790 switch(st
->minor_version
) {
2791 case 0: /* metadata at end. Round down and subtract space to reserve */
2792 devsize
= (devsize
& ~(4ULL*2-1));
2793 /* space for metadata, bblog, bitmap/ppl */
2794 devsize
-= 8*2 + 8 + bmspace
;
2798 devsize
-= data_offset
;
2801 *freesize
= devsize
;
2805 void *super1_make_v0(struct supertype
*st
, struct mdinfo
*info
, mdp_super_t
*sb0
)
2807 /* Create a v1.0 superblock based on 'info'*/
2809 struct mdp_superblock_1
*sb
;
2811 unsigned long long offset
;
2813 if (posix_memalign(&ret
, 4096, 1024) != 0)
2816 memset(ret
, 0, 1024);
2817 sb
->magic
= __cpu_to_le32(MD_SB_MAGIC
);
2818 sb
->major_version
= __cpu_to_le32(1);
2820 copy_uuid(sb
->set_uuid
, info
->uuid
, super1
.swapuuid
);
2821 sprintf(sb
->set_name
, "%d", sb0
->md_minor
);
2822 sb
->ctime
= __cpu_to_le32(info
->array
.ctime
+1);
2823 sb
->level
= __cpu_to_le32(info
->array
.level
);
2824 sb
->layout
= __cpu_to_le32(info
->array
.layout
);
2825 sb
->size
= __cpu_to_le64(info
->component_size
);
2826 sb
->chunksize
= __cpu_to_le32(info
->array
.chunk_size
/512);
2827 sb
->raid_disks
= __cpu_to_le32(info
->array
.raid_disks
);
2828 if (info
->array
.level
> 0)
2829 sb
->data_size
= sb
->size
;
2831 sb
->data_size
= st
->ss
->avail_size(st
, st
->devsize
/512, 0);
2832 sb
->resync_offset
= MaxSector
;
2833 sb
->max_dev
= __cpu_to_le32(MD_SB_DISKS
);
2834 sb
->dev_number
= __cpu_to_le32(info
->disk
.number
);
2835 sb
->utime
= __cpu_to_le64(info
->array
.utime
);
2837 offset
= st
->devsize
/512 - 8*2;
2839 sb
->super_offset
= __cpu_to_le64(offset
);
2840 //*(__u64*)(st->other + 128 + 8 + 8) = __cpu_to_le64(offset);
2842 random_uuid(sb
->device_uuid
);
2844 for (i
= 0; i
< MD_SB_DISKS
; i
++) {
2845 int state
= sb0
->disks
[i
].state
;
2846 sb
->dev_roles
[i
] = MD_DISK_ROLE_SPARE
;
2847 if ((state
& (1<<MD_DISK_SYNC
)) &&
2848 !(state
& (1<<MD_DISK_FAULTY
)))
2849 sb
->dev_roles
[i
] = __cpu_to_le16(sb0
->disks
[i
].raid_disk
);
2851 sb
->sb_csum
= calc_sb_1_csum(sb
);
2855 struct superswitch super1
= {
2856 .examine_super
= examine_super1
,
2857 .brief_examine_super
= brief_examine_super1
,
2858 .export_examine_super
= export_examine_super1
,
2859 .detail_super
= detail_super1
,
2860 .brief_detail_super
= brief_detail_super1
,
2861 .export_detail_super
= export_detail_super1
,
2862 .write_init_super
= write_init_super1
,
2863 .validate_geometry
= validate_geometry1
,
2864 .add_to_super
= add_to_super1
,
2865 .examine_badblocks
= examine_badblocks_super1
,
2866 .copy_metadata
= copy_metadata1
,
2867 .write_init_ppl
= write_init_ppl1
,
2868 .match_home
= match_home1
,
2869 .uuid_from_super
= uuid_from_super1
,
2870 .getinfo_super
= getinfo_super1
,
2871 .container_content
= container_content1
,
2872 .update_super
= update_super1
,
2873 .init_super
= init_super1
,
2874 .store_super
= store_super1
,
2875 .compare_super
= compare_super1
,
2876 .load_super
= load_super1
,
2877 .match_metadata_desc
= match_metadata_desc1
,
2878 .avail_size
= avail_size1
,
2879 .add_internal_bitmap
= add_internal_bitmap1
,
2880 .locate_bitmap
= locate_bitmap1
,
2881 .write_bitmap
= write_bitmap1
,
2882 .free_super
= free_super1
,
2883 #if __BYTE_ORDER == BIG_ENDIAN