2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Email: <neilb@cse.unsw.edu.au>
24 * School of Computer Science and Engineering
25 * The University of New South Wales
32 * The version-1 superblock :
33 * All numeric fields are little-endian.
35 * total size: 256 bytes plus 2 per device.
36 * 1K allows 384 devices.
38 struct mdp_superblock_1
{
39 /* constant array information - 128 bytes */
40 __u32 magic
; /* MD_SB_MAGIC: 0xa92b4efc - little endian */
41 __u32 major_version
; /* 1 */
42 __u32 feature_map
; /* 0 for now */
43 __u32 pad0
; /* always set to 0 when writing */
45 __u8 set_uuid
[16]; /* user-space generated. */
46 char set_name
[32]; /* set and interpreted by user-space */
48 __u64 ctime
; /* lo 40 bits are seconds, top 24 are microseconds or 0*/
49 __u32 level
; /* -4 (multipath), -1 (linear), 0,1,4,5 */
50 __u32 layout
; /* only for raid5 currently */
51 __u64 size
; /* used size of component devices, in 512byte sectors */
53 __u32 chunksize
; /* in 512byte sectors */
55 __u32 bitmap_offset
; /* sectors after start of superblock that bitmap starts
56 * NOTE: signed, so bitmap can be before superblock
57 * only meaningful of feature_map[0] is set.
60 /* These are only valid with feature bit '4' */
61 __u32 new_level
; /* new level we are reshaping to */
62 __u64 reshape_position
; /* next address in array-space for reshape */
63 __u32 delta_disks
; /* change in number of raid_disks */
64 __u32 new_layout
; /* new layout */
65 __u32 new_chunk
; /* new chunk size (bytes) */
66 __u8 pad1
[128-124]; /* set to 0 when written */
68 /* constant this-device information - 64 bytes */
69 __u64 data_offset
; /* sector start of data, often 0 */
70 __u64 data_size
; /* sectors in this device that can be used for data */
71 __u64 super_offset
; /* sector start of this superblock */
72 __u64 recovery_offset
;/* sectors before this offset (from data_offset) have been recovered */
73 __u32 dev_number
; /* permanent identifier of this device - not role in raid */
74 __u32 cnt_corrected_read
; /* number of read errors that were corrected by re-writing */
75 __u8 device_uuid
[16]; /* user-space setable, ignored by kernel */
76 __u8 devflags
; /* per-device flags. Only one defined...*/
77 #define WriteMostly1 1 /* mask for writemostly flag in above */
78 __u8 pad2
[64-57]; /* set to 0 when writing */
80 /* array state information - 64 bytes */
81 __u64 utime
; /* 40 bits second, 24 btes microseconds */
82 __u64 events
; /* incremented when superblock updated */
83 __u64 resync_offset
; /* data before this offset (from data_offset) known to be in sync */
84 __u32 sb_csum
; /* checksum upto devs[max_dev] */
85 __u32 max_dev
; /* size of devs[] array to consider */
86 __u8 pad3
[64-32]; /* set to 0 when writing */
88 /* device state information. Indexed by dev_number.
90 * Note there are no per-device state flags. State information is rolled
91 * into the 'roles' value. If a device is spare or faulty, then it doesn't
92 * have a meaningful role.
94 __u16 dev_roles
[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */
97 struct misc_dev_info
{
101 /* feature_map bits */
102 #define MD_FEATURE_BITMAP_OFFSET 1
103 #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and
106 #define MD_FEATURE_RESHAPE_ACTIVE 4
108 #define MD_FEATURE_ALL (1|2|4)
111 #define offsetof(t,f) ((size_t)&(((t*)0)->f))
113 static unsigned int calc_sb_1_csum(struct mdp_superblock_1
* sb
)
115 unsigned int disk_csum
, csum
;
116 unsigned long long newcsum
;
117 int size
= sizeof(*sb
) + __le32_to_cpu(sb
->max_dev
)*2;
118 unsigned int *isuper
= (unsigned int*)sb
;
121 /* make sure I can count... */
122 if (offsetof(struct mdp_superblock_1
,data_offset
) != 128 ||
123 offsetof(struct mdp_superblock_1
, utime
) != 192 ||
124 sizeof(struct mdp_superblock_1
) != 256) {
125 fprintf(stderr
, "WARNING - superblock isn't sized correctly\n");
128 disk_csum
= sb
->sb_csum
;
131 for (i
=0; size
>=4; size
-= 4 ) {
132 newcsum
+= __le32_to_cpu(*isuper
);
137 newcsum
+= __le16_to_cpu(*(unsigned short*) isuper
);
139 csum
= (newcsum
& 0xffffffff) + (newcsum
>> 32);
140 sb
->sb_csum
= disk_csum
;
141 return __cpu_to_le32(csum
);
145 static void examine_super1(struct supertype
*st
, char *homehost
)
147 struct mdp_superblock_1
*sb
= st
->sb
;
153 int l
= homehost
? strlen(homehost
) : 0;
155 unsigned long long sb_offset
;
157 printf(" Magic : %08x\n", __le32_to_cpu(sb
->magic
));
158 printf(" Version : 1");
159 sb_offset
= __le64_to_cpu(sb
->super_offset
);
162 else if (sb_offset
<= 8)
166 printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb
->feature_map
));
167 printf(" Array UUID : ");
168 for (i
=0; i
<16; i
++) {
169 if ((i
&3)==0 && i
!= 0) printf(":");
170 printf("%02x", sb
->set_uuid
[i
]);
173 printf(" Name : %.32s", sb
->set_name
);
174 if (l
> 0 && l
< 32 &&
175 sb
->set_name
[l
] == ':' &&
176 strncmp(sb
->set_name
, homehost
, l
) == 0)
177 printf(" (local to host %s)", homehost
);
179 atime
= __le64_to_cpu(sb
->ctime
) & 0xFFFFFFFFFFULL
;
180 printf(" Creation Time : %.24s\n", ctime(&atime
));
181 c
=map_num(pers
, __le32_to_cpu(sb
->level
));
182 printf(" Raid Level : %s\n", c
?c
:"-unknown-");
183 printf(" Raid Devices : %d\n", __le32_to_cpu(sb
->raid_disks
));
185 printf(" Avail Dev Size : %llu%s\n",
186 (unsigned long long)__le64_to_cpu(sb
->data_size
),
187 human_size(__le64_to_cpu(sb
->data_size
)<<9));
188 if (__le32_to_cpu(sb
->level
) >= 0) {
190 switch(__le32_to_cpu(sb
->level
)) {
191 case 1: ddsks
=1;break;
193 case 5: ddsks
= __le32_to_cpu(sb
->raid_disks
)-1; break;
194 case 6: ddsks
= __le32_to_cpu(sb
->raid_disks
)-2; break;
196 layout
= __le32_to_cpu(sb
->layout
);
197 ddsks
= __le32_to_cpu(sb
->raid_disks
)
198 / (layout
&255) / ((layout
>>8)&255);
201 printf(" Array Size : %llu%s\n",
202 ddsks
*(unsigned long long)__le64_to_cpu(sb
->size
),
203 human_size(ddsks
*__le64_to_cpu(sb
->size
)<<9));
204 if (sb
->size
!= sb
->data_size
)
205 printf(" Used Dev Size : %llu%s\n",
206 (unsigned long long)__le64_to_cpu(sb
->size
),
207 human_size(__le64_to_cpu(sb
->size
)<<9));
210 printf(" Data Offset : %llu sectors\n",
211 (unsigned long long)__le64_to_cpu(sb
->data_offset
));
212 printf(" Super Offset : %llu sectors\n",
213 (unsigned long long)__le64_to_cpu(sb
->super_offset
));
214 if (__le32_to_cpu(sb
->feature_map
) & MD_FEATURE_RECOVERY_OFFSET
)
215 printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb
->recovery_offset
));
216 printf(" State : %s\n", (__le64_to_cpu(sb
->resync_offset
)+1)? "active":"clean");
217 printf(" Device UUID : ");
218 for (i
=0; i
<16; i
++) {
219 if ((i
&3)==0 && i
!= 0) printf(":");
220 printf("%02x", sb
->device_uuid
[i
]);
224 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
225 printf("Internal Bitmap : %ld sectors from superblock\n",
226 (long)(int32_t)__le32_to_cpu(sb
->bitmap_offset
));
228 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
)) {
229 printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb
->reshape_position
)/2,
230 human_size(__le64_to_cpu(sb
->reshape_position
)<<9));
231 if (__le32_to_cpu(sb
->delta_disks
)) {
232 printf(" Delta Devices : %d", __le32_to_cpu(sb
->delta_disks
));
233 if (__le32_to_cpu(sb
->delta_disks
))
234 printf(" (%d->%d)\n",
235 __le32_to_cpu(sb
->raid_disks
)-__le32_to_cpu(sb
->delta_disks
),
236 __le32_to_cpu(sb
->raid_disks
));
238 printf(" (%d->%d)\n", __le32_to_cpu(sb
->raid_disks
),
239 __le32_to_cpu(sb
->raid_disks
)+__le32_to_cpu(sb
->delta_disks
));
241 if (__le32_to_cpu(sb
->new_level
) != __le32_to_cpu(sb
->level
)) {
242 c
= map_num(pers
, __le32_to_cpu(sb
->new_level
));
243 printf(" New Level : %s\n", c
?c
:"-unknown-");
245 if (__le32_to_cpu(sb
->new_layout
) != __le32_to_cpu(sb
->layout
)) {
246 if (__le32_to_cpu(sb
->level
) == 5) {
247 c
= map_num(r5layout
, __le32_to_cpu(sb
->new_layout
));
248 printf(" New Layout : %s\n", c
?c
:"-unknown-");
250 if (__le32_to_cpu(sb
->level
) == 10) {
251 printf(" New Layout :");
252 print_r10_layout(__le32_to_cpu(sb
->new_layout
));
256 if (__le32_to_cpu(sb
->new_chunk
) != __le32_to_cpu(sb
->chunksize
))
257 printf(" New Chunksize : %dK\n", __le32_to_cpu(sb
->new_chunk
)/2);
262 if (sb
->devflags
& WriteMostly1
)
263 printf(" write-mostly");
267 atime
= __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
;
268 printf(" Update Time : %.24s\n", ctime(&atime
));
270 if (calc_sb_1_csum(sb
) == sb
->sb_csum
)
271 printf(" Checksum : %x - correct\n", __le32_to_cpu(sb
->sb_csum
));
273 printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb
->sb_csum
),
274 __le32_to_cpu(calc_sb_1_csum(sb
)));
275 printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb
->events
));
277 if (__le32_to_cpu(sb
->level
) == 5) {
278 c
= map_num(r5layout
, __le32_to_cpu(sb
->layout
));
279 printf(" Layout : %s\n", c
?c
:"-unknown-");
281 if (__le32_to_cpu(sb
->level
) == 10) {
282 int lo
= __le32_to_cpu(sb
->layout
);
284 print_r10_layout(lo
);
287 switch(__le32_to_cpu(sb
->level
)) {
293 printf(" Chunk Size : %dK\n", __le32_to_cpu(sb
->chunksize
)/2);
296 printf(" Rounding : %dK\n", __le32_to_cpu(sb
->chunksize
)/2);
301 printf(" Array Slot : %d (", __le32_to_cpu(sb
->dev_number
));
302 for (i
= __le32_to_cpu(sb
->max_dev
); i
> 0 ; i
--)
303 if (__le16_to_cpu(sb
->dev_roles
[i
-1]) != 0xffff)
305 for (d
=0; d
< i
; d
++) {
306 int role
= __le16_to_cpu(sb
->dev_roles
[d
]);
308 if (role
== 0xffff) printf("empty");
309 else if(role
== 0xfffe) printf("failed");
310 else printf("%d", role
);
313 printf(" Array State : ");
314 for (d
=0; d
<__le32_to_cpu(sb
->raid_disks
); d
++) {
318 for (i
=0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
319 int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
321 if (i
== __le32_to_cpu(sb
->dev_number
))
326 if (cnt
> 1) printf("?");
327 else if (cnt
== 1 && me
) printf("U");
328 else if (cnt
== 1) printf("u");
332 for (i
=0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
333 int role
= __le16_to_cpu(sb
->dev_roles
[i
]);
337 if (faulty
) printf(" %d failed", faulty
);
342 static void brief_examine_super1(struct supertype
*st
)
344 struct mdp_superblock_1
*sb
= st
->sb
;
346 unsigned long long sb_offset
;
348 char *c
=map_num(pers
, __le32_to_cpu(sb
->level
));
350 nm
= strchr(sb
->set_name
, ':');
353 else if (sb
->set_name
[0])
358 printf("ARRAY /dev/md/%s level=%s ", nm
, c
?c
:"-unknown-");
359 sb_offset
= __le64_to_cpu(sb
->super_offset
);
361 printf("metadata=1.1 ");
362 else if (sb_offset
<= 8)
363 printf("metadata=1.2 ");
365 printf("metadata=1.0 ");
366 printf("num-devices=%d UUID=", __le32_to_cpu(sb
->raid_disks
));
367 for (i
=0; i
<16; i
++) {
368 if ((i
&3)==0 && i
!= 0) printf(":");
369 printf("%02x", sb
->set_uuid
[i
]);
372 printf(" name=%.32s", sb
->set_name
);
376 static void export_examine_super1(struct supertype
*st
)
378 struct mdp_superblock_1
*sb
= st
->sb
;
382 printf("MD_LEVEL=%s\n", map_num(pers
, __le32_to_cpu(sb
->level
)));
383 printf("MD_DEVICES=%d\n", __le32_to_cpu(sb
->raid_disks
));
385 if (sb
->set_name
[i
] == '\n' ||
386 sb
->set_name
[i
] == '\0') {
391 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
393 for (i
=0; i
<16; i
++) {
394 if ((i
&3)==0 && i
!= 0) printf(":");
395 printf("%02x", sb
->set_uuid
[i
]);
398 printf("MD_UPDATE_TIME=%llu\n",
399 __le64_to_cpu(sb
->utime
) & 0xFFFFFFFFFFULL
);
400 printf("MD_DEV_UUID=");
401 for (i
=0; i
<16; i
++) {
402 if ((i
&3)==0 && i
!= 0) printf(":");
403 printf("%02x", sb
->device_uuid
[i
]);
406 printf("MD_EVENTS=%llu\n",
407 (unsigned long long)__le64_to_cpu(sb
->events
));
410 static void detail_super1(struct supertype
*st
, char *homehost
)
412 struct mdp_superblock_1
*sb
= st
->sb
;
414 int l
= homehost
? strlen(homehost
) : 0;
416 printf(" Name : %.32s", sb
->set_name
);
417 if (l
> 0 && l
< 32 &&
418 sb
->set_name
[l
] == ':' &&
419 strncmp(sb
->set_name
, homehost
, l
) == 0)
420 printf(" (local to host %s)", homehost
);
421 printf("\n UUID : ");
422 for (i
=0; i
<16; i
++) {
423 if ((i
&3)==0 && i
!= 0) printf(":");
424 printf("%02x", sb
->set_uuid
[i
]);
426 printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb
->events
));
429 static void brief_detail_super1(struct supertype
*st
)
431 struct mdp_superblock_1
*sb
= st
->sb
;
435 printf(" name=%.32s", sb
->set_name
);
437 for (i
=0; i
<16; i
++) {
438 if ((i
&3)==0 && i
!= 0) printf(":");
439 printf("%02x", sb
->set_uuid
[i
]);
443 static void export_detail_super1(struct supertype
*st
)
445 struct mdp_superblock_1
*sb
= st
->sb
;
450 if (sb
->set_name
[i
] == '\n' ||
451 sb
->set_name
[i
] == '\0') {
456 printf("MD_NAME=%.*s\n", len
, sb
->set_name
);
461 static int match_home1(struct supertype
*st
, char *homehost
)
463 struct mdp_superblock_1
*sb
= st
->sb
;
464 int l
= homehost
? strlen(homehost
) : 0;
466 return (l
> 0 && l
< 32 &&
467 sb
->set_name
[l
] == ':' &&
468 strncmp(sb
->set_name
, homehost
, l
) == 0);
471 static void uuid_from_super1(struct supertype
*st
, int uuid
[4])
473 struct mdp_superblock_1
*super
= st
->sb
;
474 char *cuuid
= (char*)uuid
;
477 cuuid
[i
] = super
->set_uuid
[i
];
480 static void getinfo_super1(struct supertype
*st
, struct mdinfo
*info
)
482 struct mdp_superblock_1
*sb
= st
->sb
;
487 info
->array
.major_version
= 1;
488 info
->array
.minor_version
= st
->minor_version
;
489 info
->array
.patch_version
= 0;
490 info
->array
.raid_disks
= __le32_to_cpu(sb
->raid_disks
);
491 info
->array
.level
= __le32_to_cpu(sb
->level
);
492 info
->array
.layout
= __le32_to_cpu(sb
->layout
);
493 info
->array
.md_minor
= -1;
494 info
->array
.ctime
= __le64_to_cpu(sb
->ctime
);
495 info
->array
.utime
= __le64_to_cpu(sb
->utime
);
496 info
->array
.chunk_size
= __le32_to_cpu(sb
->chunksize
)*512;
498 (__le64_to_cpu(sb
->resync_offset
) >= __le64_to_cpu(sb
->size
))
501 info
->data_offset
= __le64_to_cpu(sb
->data_offset
);
502 info
->component_size
= __le64_to_cpu(sb
->size
);
504 info
->disk
.major
= 0;
505 info
->disk
.minor
= 0;
506 info
->disk
.number
= __le32_to_cpu(sb
->dev_number
);
507 if (__le32_to_cpu(sb
->dev_number
) >= __le32_to_cpu(sb
->max_dev
) ||
508 __le32_to_cpu(sb
->max_dev
) > 512)
511 role
= __le16_to_cpu(sb
->dev_roles
[__le32_to_cpu(sb
->dev_number
)]);
513 info
->disk
.raid_disk
= -1;
516 info
->disk
.state
= 2; /* spare: ACTIVE, not sync, not faulty */
519 info
->disk
.state
= 1; /* faulty */
522 info
->disk
.state
= 6; /* active and in sync */
523 info
->disk
.raid_disk
= role
;
525 info
->events
= __le64_to_cpu(sb
->events
);
526 sprintf(info
->text_version
, "1.%d", st
->minor_version
);
527 info
->safe_mode_delay
= 200;
529 memcpy(info
->uuid
, sb
->set_uuid
, 16);
531 strncpy(info
->name
, sb
->set_name
, 32);
534 if (sb
->feature_map
& __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE
)) {
535 info
->reshape_active
= 1;
536 info
->reshape_progress
= __le64_to_cpu(sb
->reshape_position
);
537 info
->new_level
= __le32_to_cpu(sb
->new_level
);
538 info
->delta_disks
= __le32_to_cpu(sb
->delta_disks
);
539 info
->new_layout
= __le32_to_cpu(sb
->new_layout
);
540 info
->new_chunk
= __le32_to_cpu(sb
->new_chunk
)<<9;
542 info
->reshape_active
= 0;
544 for (i
=0; i
< __le32_to_cpu(sb
->max_dev
); i
++) {
545 role
= __le16_to_cpu(sb
->dev_roles
[i
]);
546 if (/*role == 0xFFFF || */role
< info
->array
.raid_disks
)
550 info
->array
.working_disks
= working
;
553 static int update_super1(struct supertype
*st
, struct mdinfo
*info
,
555 char *devname
, int verbose
,
556 int uuid_set
, char *homehost
)
558 /* NOTE: for 'assemble' and 'force' we need to return non-zero if any change was made.
559 * For others, the return value is ignored.
562 struct mdp_superblock_1
*sb
= st
->sb
;
564 if (strcmp(update
, "force-one")==0) {
565 /* Not enough devices for a working array,
566 * so bring this one up-to-date
568 if (sb
->events
!= __cpu_to_le64(info
->events
))
570 sb
->events
= __cpu_to_le64(info
->events
);
572 if (strcmp(update
, "force-array")==0) {
573 /* Degraded array and 'force' requests to
574 * maybe need to mark it 'clean'.
576 switch(__le32_to_cpu(sb
->level
)) {
577 case 5: case 4: case 6:
578 /* need to force clean */
579 if (sb
->resync_offset
!= ~0ULL)
581 sb
->resync_offset
= ~0ULL;
584 if (strcmp(update
, "assemble")==0) {
585 int d
= info
->disk
.number
;
587 if (info
->disk
.state
== 6)
588 want
= __cpu_to_le32(info
->disk
.raid_disk
);
591 if (sb
->dev_roles
[d
] != want
) {
592 sb
->dev_roles
[d
] = want
;
596 if (strcmp(update
, "linear-grow-new") == 0) {
599 int max
= __le32_to_cpu(sb
->max_dev
);
601 for (i
=0 ; i
< max
; i
++)
602 if (__le16_to_cpu(sb
->dev_roles
[i
]) >= 0xfffe)
604 sb
->dev_number
= __cpu_to_le32(i
);
605 info
->disk
.number
= i
;
606 if (max
>= __le32_to_cpu(sb
->max_dev
))
607 sb
->max_dev
= __cpu_to_le32(max
+1);
609 if ((rfd
= open("/dev/urandom", O_RDONLY
)) < 0 ||
610 read(rfd
, sb
->device_uuid
, 16) != 16) {
611 *(__u32
*)(sb
->device_uuid
) = random();
612 *(__u32
*)(sb
->device_uuid
+4) = random();
613 *(__u32
*)(sb
->device_uuid
+8) = random();
614 *(__u32
*)(sb
->device_uuid
+12) = random();
618 __cpu_to_le16(info
->disk
.raid_disk
);
620 fd
= open(devname
, O_RDONLY
);
622 unsigned long long ds
;
623 get_dev_size(fd
, devname
, &ds
);
626 if (__le64_to_cpu(sb
->super_offset
) <
627 __le64_to_cpu(sb
->data_offset
)) {
628 sb
->data_size
= __cpu_to_le64(
629 ds
- __le64_to_cpu(sb
->data_offset
));
632 ds
&= ~(unsigned long long)(4*2-1);
633 sb
->super_offset
= __cpu_to_le64(ds
);
634 sb
->data_size
= __cpu_to_le64(
635 ds
- __le64_to_cpu(sb
->data_offset
));
639 if (strcmp(update
, "linear-grow-update") == 0) {
640 sb
->raid_disks
= __cpu_to_le32(info
->array
.raid_disks
);
641 sb
->dev_roles
[info
->disk
.number
] =
642 __cpu_to_le16(info
->disk
.raid_disk
);
644 if (strcmp(update
, "resync") == 0) {
645 /* make sure resync happens */
646 sb
->resync_offset
= 0ULL;
648 if (strcmp(update
, "uuid") == 0) {
649 copy_uuid(sb
->set_uuid
, info
->uuid
, super1
.swapuuid
);
651 if (__le32_to_cpu(sb
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) {
652 struct bitmap_super_s
*bm
;
653 bm
= (struct bitmap_super_s
*)(st
->sb
+1024);
654 memcpy(bm
->uuid
, sb
->set_uuid
, 16);
657 if (strcmp(update
, "homehost") == 0 &&
661 c
= strchr(sb
->set_name
, ':');
663 strncpy(info
->name
, c
+1, 31 - (c
-sb
->set_name
));
665 strncpy(info
->name
, sb
->set_name
, 32);
668 if (strcmp(update
, "name") == 0) {
669 if (info
->name
[0] == 0)
670 sprintf(info
->name
, "%d", info
->array
.md_minor
);
671 memset(sb
->set_name
, 0, sizeof(sb
->set_name
));
673 strchr(info
->name
, ':') == NULL
&&
674 strlen(homehost
)+1+strlen(info
->name
) < 32) {
675 strcpy(sb
->set_name
, homehost
);
676 strcat(sb
->set_name
, ":");
677 strcat(sb
->set_name
, info
->name
);
679 strcpy(sb
->set_name
, info
->name
);
681 if (strcmp(update
, "devicesize") == 0 &&
682 __le64_to_cpu(sb
->super_offset
) <
683 __le64_to_cpu(sb
->data_offset
)) {
684 /* set data_size to device size less data_offset */
685 struct misc_dev_info
*misc
= (struct misc_dev_info
*)
686 (st
->sb
+ 1024 + 512);
687 printf("Size was %llu\n", (unsigned long long)
688 __le64_to_cpu(sb
->data_size
));
689 sb
->data_size
= __cpu_to_le64(
690 misc
->device_size
- __le64_to_cpu(sb
->data_offset
));
691 printf("Size is %llu\n", (unsigned long long)
692 __le64_to_cpu(sb
->data_size
));
694 if (strcmp(update
, "_reshape_progress")==0)
695 sb
->reshape_position
= __cpu_to_le64(info
->reshape_progress
);
697 sb
->sb_csum
= calc_sb_1_csum(sb
);
701 static int init_super1(struct supertype
*st
, mdu_array_info_t
*info
,
702 unsigned long long size
, char *name
, char *homehost
, int *uuid
)
704 struct mdp_superblock_1
*sb
;
709 if (posix_memalign((void**)&sb
, 512, (1024 + 512 +
710 sizeof(struct misc_dev_info
))) != 0) {
712 ": %s could not allocate superblock\n", __func__
);
719 /* zeroing superblock */
723 spares
= info
->working_disks
- info
->active_disks
;
724 if (info
->raid_disks
+ spares
> 384) {
725 fprintf(stderr
, Name
": too many devices requested: %d+%d > %d\n",
726 info
->raid_disks
, spares
, 384);
730 sb
->magic
= __cpu_to_le32(MD_SB_MAGIC
);
731 sb
->major_version
= __cpu_to_le32(1);
736 copy_uuid(sb
->set_uuid
, uuid
, super1
.swapuuid
);
738 if ((rfd
= open("/dev/urandom", O_RDONLY
)) < 0 ||
739 read(rfd
, sb
->set_uuid
, 16) != 16) {
740 *(__u32
*)(sb
->set_uuid
) = random();
741 *(__u32
*)(sb
->set_uuid
+4) = random();
742 *(__u32
*)(sb
->set_uuid
+8) = random();
743 *(__u32
*)(sb
->set_uuid
+12) = random();
745 if (rfd
>= 0) close(rfd
);
748 if (name
== NULL
|| *name
== 0) {
749 sprintf(defname
, "%d", info
->md_minor
);
752 memset(sb
->set_name
, 0, 32);
754 strchr(name
, ':')== NULL
&&
755 strlen(homehost
)+1+strlen(name
) < 32) {
756 strcpy(sb
->set_name
, homehost
);
757 strcat(sb
->set_name
, ":");
758 strcat(sb
->set_name
, name
);
760 strcpy(sb
->set_name
, name
);
762 sb
->ctime
= __cpu_to_le64((unsigned long long)time(0));
763 sb
->level
= __cpu_to_le32(info
->level
);
764 sb
->layout
= __cpu_to_le32(info
->layout
);
765 sb
->size
= __cpu_to_le64(size
*2ULL);
766 sb
->chunksize
= __cpu_to_le32(info
->chunk_size
>>9);
767 sb
->raid_disks
= __cpu_to_le32(info
->raid_disks
);
769 sb
->data_offset
= __cpu_to_le64(0);
770 sb
->data_size
= __cpu_to_le64(0);
771 sb
->super_offset
= __cpu_to_le64(0);
772 sb
->recovery_offset
= __cpu_to_le64(0);
774 sb
->utime
= sb
->ctime
;
775 sb
->events
= __cpu_to_le64(1);
776 if (info
->state
& (1<<MD_SB_CLEAN
))
777 sb
->resync_offset
= ~0ULL;
779 sb
->resync_offset
= 0;
780 sb
->max_dev
= __cpu_to_le32((1024- sizeof(struct mdp_superblock_1
))/
781 sizeof(sb
->dev_roles
[0]));
782 memset(sb
->pad3
, 0, sizeof(sb
->pad3
));
784 memset(sb
->dev_roles
, 0xff, 1024 - sizeof(struct mdp_superblock_1
));
792 mdu_disk_info_t disk
;
793 struct devinfo
*next
;
796 /* Add a device to the superblock being created */
797 static void add_to_super1(struct supertype
*st
, mdu_disk_info_t
*dk
,
798 int fd
, char *devname
)
800 struct mdp_superblock_1
*sb
= st
->sb
;
801 __u16
*rp
= sb
->dev_roles
+ dk
->number
;
802 struct devinfo
*di
, **dip
;
804 if ((dk
->state
& 6) == 6) /* active, sync */
805 *rp
= __cpu_to_le16(dk
->raid_disk
);
806 else if ((dk
->state
& ~2) == 0) /* active or idle -> spare */
811 sb
->dev_number
= __cpu_to_le32(dk
->number
);
812 sb
->sb_csum
= calc_sb_1_csum(sb
);
814 dip
= (struct devinfo
**)&st
->info
;
817 di
= malloc(sizeof(struct devinfo
));
819 di
->devname
= devname
;
826 static void locate_bitmap1(struct supertype
*st
, int fd
);
828 static int store_super1(struct supertype
*st
, int fd
)
830 struct mdp_superblock_1
*sb
= st
->sb
;
831 unsigned long long sb_offset
;
833 unsigned long long dsize
;
835 if (!get_dev_size(fd
, NULL
, &dsize
))
844 * Calculate the position of the superblock.
845 * It is always aligned to a 4K boundary and
846 * depending on minor_version, it can be:
847 * 0: At least 8K, but less than 12K, from end of device
848 * 1: At start of device
849 * 2: 4K from start of device.
851 switch(st
->minor_version
) {
855 sb_offset
&= ~(4*2-1);
869 if (sb_offset
!= __le64_to_cpu(sb
->super_offset
) &&
870 0 != __le64_to_cpu(sb
->super_offset
)
872 fprintf(stderr
, Name
": internal error - sb_offset is wrong\n");
876 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL)
879 sbsize
= sizeof(*sb
) + 2 * __le32_to_cpu(sb
->max_dev
);
880 sbsize
= (sbsize
+511)&(~511UL);
882 if (write(fd
, sb
, sbsize
) != sbsize
)
885 if (sb
->feature_map
& __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET
)) {
886 struct bitmap_super_s
*bm
= (struct bitmap_super_s
*)
888 if (__le32_to_cpu(bm
->magic
) == BITMAP_MAGIC
) {
889 locate_bitmap1(st
, fd
);
890 if (write(fd
, bm
, ROUND_UP(sizeof(*bm
),512)) !=
891 ROUND_UP(sizeof(*bm
),512))
899 static int load_super1(struct supertype
*st
, int fd
, char *devname
);
901 static unsigned long choose_bm_space(unsigned long devsize
)
903 /* if the device is bigger than 8Gig, save 64k for bitmap usage,
904 * if bigger than 200Gig, save 128k
906 if (devsize
< 64*2) return 0;
907 if (devsize
- 64*2 >= 200*1024*1024*2)
909 if (devsize
- 4*2 > 8*1024*1024*2)
915 static int write_init_super1(struct supertype
*st
)
917 struct mdp_superblock_1
*sb
= st
->sb
;
918 struct supertype refst
;
923 unsigned long long dsize
, array_size
;
926 for (di
= st
->info
; di
&& ! rv
; di
= di
->next
) {
927 if (di
->disk
.state
== 1)
932 Kill(di
->devname
, 0, 1, 1);
933 Kill(di
->devname
, 0, 1, 1);
935 sb
->dev_number
= __cpu_to_le32(di
->disk
.number
);
936 if (di
->disk
.state
& (1<<MD_DISK_WRITEMOSTLY
))
937 sb
->devflags
|= __cpu_to_le32(WriteMostly1
);
939 if ((rfd
= open("/dev/urandom", O_RDONLY
)) < 0 ||
940 read(rfd
, sb
->device_uuid
, 16) != 16) {
941 *(__u32
*)(sb
->device_uuid
) = random();
942 *(__u32
*)(sb
->device_uuid
+4) = random();
943 *(__u32
*)(sb
->device_uuid
+8) = random();
944 *(__u32
*)(sb
->device_uuid
+12) = random();
946 if (rfd
>= 0) close(rfd
);
951 if (load_super1(&refst
, di
->fd
, NULL
)==0) {
952 struct mdp_superblock_1
*refsb
= refst
.sb
;
954 memcpy(sb
->device_uuid
, refsb
->device_uuid
, 16);
955 if (memcmp(sb
->set_uuid
, refsb
->set_uuid
, 16)==0) {
956 /* same array, so preserve events and
958 sb
->events
= refsb
->events
;
959 /* bugs in 2.6.17 and earlier mean the
960 * dev_number chosen in Manage must be preserved
962 if (get_linux_version() >= 2006018)
963 sb
->dev_number
= refsb
->dev_number
;
968 if (!get_dev_size(di
->fd
, NULL
, &dsize
))
979 * Calculate the position of the superblock.
980 * It is always aligned to a 4K boundary and
981 * depending on minor_version, it can be:
982 * 0: At least 8K, but less than 12K, from end of device
983 * 1: At start of device
984 * 2: 4K from start of device.
985 * Depending on the array size, we might leave extra space
988 array_size
= __le64_to_cpu(sb
->size
);
989 /* work out how much space we left for a bitmap */
990 bm_space
= choose_bm_space(array_size
);
992 switch(st
->minor_version
) {
996 sb_offset
&= ~(4*2-1);
997 sb
->super_offset
= __cpu_to_le64(sb_offset
);
998 sb
->data_offset
= __cpu_to_le64(0);
999 if (sb_offset
- bm_space
< array_size
)
1000 bm_space
= sb_offset
- array_size
;
1001 sb
->data_size
= __cpu_to_le64(sb_offset
- bm_space
);
1004 sb
->super_offset
= __cpu_to_le64(0);
1005 if (4*2 + bm_space
+ __le64_to_cpu(sb
->size
) > dsize
)
1006 bm_space
= dsize
- __le64_to_cpu(sb
->size
) -4*2;
1007 sb
->data_offset
= __cpu_to_le64(bm_space
+ 4*2);
1008 sb
->data_size
= __cpu_to_le64(dsize
- bm_space
- 4*2);
1012 sb
->super_offset
= __cpu_to_le64(4*2);
1013 if (4*2 + 4*2 + bm_space
+ __le64_to_cpu(sb
->size
)
1015 bm_space
= dsize
- __le64_to_cpu(sb
->size
)
1017 sb
->data_offset
= __cpu_to_le64(4*2 + 4*2 + bm_space
);
1018 sb
->data_size
= __cpu_to_le64(dsize
- 4*2 - 4*2
1026 sb
->sb_csum
= calc_sb_1_csum(sb
);
1027 rv
= store_super1(st
, di
->fd
);
1030 Name
": failed to write superblock to %s\n",
1033 if (rv
== 0 && (__le32_to_cpu(sb
->feature_map
) & 1))
1034 rv
= st
->ss
->write_bitmap(st
, di
->fd
);
1042 static int compare_super1(struct supertype
*st
, struct supertype
*tst
)
1046 * 0 same, or first was empty, and second was copied
1047 * 1 second had wrong number
1049 * 3 wrong other info
1051 struct mdp_superblock_1
*first
= st
->sb
;
1052 struct mdp_superblock_1
*second
= tst
->sb
;
1054 if (second
->magic
!= __cpu_to_le32(MD_SB_MAGIC
))
1056 if (second
->major_version
!= __cpu_to_le32(1))
1060 if (posix_memalign((void**)&first
, 512,
1062 sizeof(struct misc_dev_info
)) != 0) {
1063 fprintf(stderr
, Name
1064 ": %s could not allocate superblock\n", __func__
);
1067 memcpy(first
, second
, 1024 + 512 +
1068 sizeof(struct misc_dev_info
));
1072 if (memcmp(first
->set_uuid
, second
->set_uuid
, 16)!= 0)
1075 if (first
->ctime
!= second
->ctime
||
1076 first
->level
!= second
->level
||
1077 first
->layout
!= second
->layout
||
1078 first
->size
!= second
->size
||
1079 first
->chunksize
!= second
->chunksize
||
1080 first
->raid_disks
!= second
->raid_disks
)
1085 static void free_super1(struct supertype
*st
);
1087 static int load_super1(struct supertype
*st
, int fd
, char *devname
)
1089 unsigned long long dsize
;
1090 unsigned long long sb_offset
;
1091 struct mdp_superblock_1
*super
;
1093 struct bitmap_super_s
*bsb
;
1094 struct misc_dev_info
*misc
;
1098 if (st
->subarray
[0])
1101 if (st
->ss
== NULL
|| st
->minor_version
== -1) {
1103 struct supertype tst
;
1104 __u64 bestctime
= 0;
1105 /* guess... choose latest ctime */
1106 memset(&tst
, 0, sizeof(tst
));
1108 for (tst
.minor_version
= 0; tst
.minor_version
<= 2 ; tst
.minor_version
++) {
1109 switch(load_super1(&tst
, fd
, devname
)) {
1110 case 0: super
= tst
.sb
;
1111 if (bestvers
== -1 ||
1112 bestctime
< __le64_to_cpu(super
->ctime
)) {
1113 bestvers
= tst
.minor_version
;
1114 bestctime
= __le64_to_cpu(super
->ctime
);
1119 case 1: return 1; /*bad device */
1120 case 2: break; /* bad, try next */
1123 if (bestvers
!= -1) {
1125 tst
.minor_version
= bestvers
;
1128 rv
= load_super1(&tst
, fd
, devname
);
1135 if (!get_dev_size(fd
, devname
, &dsize
))
1141 fprintf(stderr
, Name
": %s is too small for md: size is %llu sectors.\n",
1147 * Calculate the position of the superblock.
1148 * It is always aligned to a 4K boundary and
1149 * depending on minor_version, it can be:
1150 * 0: At least 8K, but less than 12K, from end of device
1151 * 1: At start of device
1152 * 2: 4K from start of device.
1154 switch(st
->minor_version
) {
1158 sb_offset
&= ~(4*2-1);
1170 ioctl(fd
, BLKFLSBUF
, 0); /* make sure we read current data */
1173 if (lseek64(fd
, sb_offset
<< 9, 0)< 0LL) {
1175 fprintf(stderr
, Name
": Cannot seek to superblock on %s: %s\n",
1176 devname
, strerror(errno
));
1180 if (posix_memalign((void**)&super
, 512,
1182 sizeof(struct misc_dev_info
)) != 0) {
1183 fprintf(stderr
, Name
": %s could not allocate superblock\n",
1188 if (read(fd
, super
, 1024) != 1024) {
1190 fprintf(stderr
, Name
": Cannot read superblock on %s\n",
1196 if (__le32_to_cpu(super
->magic
) != MD_SB_MAGIC
) {
1198 fprintf(stderr
, Name
": No super block found on %s (Expected magic %08x, got %08x)\n",
1199 devname
, MD_SB_MAGIC
, __le32_to_cpu(super
->magic
));
1204 if (__le32_to_cpu(super
->major_version
) != 1) {
1206 fprintf(stderr
, Name
": Cannot interpret superblock on %s - version is %d\n",
1207 devname
, __le32_to_cpu(super
->major_version
));
1211 if (__le64_to_cpu(super
->super_offset
) != sb_offset
) {
1213 fprintf(stderr
, Name
": No superblock found on %s (super_offset is wrong)\n",
1220 bsb
= (struct bitmap_super_s
*)(((char*)super
)+1024);
1222 misc
= (struct misc_dev_info
*) (((char*)super
)+1024+512);
1223 misc
->device_size
= dsize
;
1225 /* Now check on the bitmap superblock */
1226 if ((__le32_to_cpu(super
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) == 0)
1228 /* Read the bitmap superblock and make sure it looks
1229 * valid. If it doesn't clear the bit. An --assemble --force
1230 * should get that written out.
1232 locate_bitmap1(st
, fd
);
1233 if (read(fd
, ((char*)super
)+1024, 512)
1237 uuid_from_super1(st
, uuid
);
1238 if (__le32_to_cpu(bsb
->magic
) != BITMAP_MAGIC
||
1239 memcmp(bsb
->uuid
, uuid
, 16) != 0)
1244 super
->feature_map
= __cpu_to_le32(__le32_to_cpu(super
->feature_map
) & ~1);
1249 static struct supertype
*match_metadata_desc1(char *arg
)
1251 struct supertype
*st
= malloc(sizeof(*st
));
1254 memset(st
, 0, sizeof(*st
));
1258 /* leading zeros can be safely ignored. --detail generates them. */
1261 if (strcmp(arg
, "1.0") == 0 ||
1262 strcmp(arg
, "1.00") == 0) {
1263 st
->minor_version
= 0;
1266 if (strcmp(arg
, "1.1") == 0 ||
1267 strcmp(arg
, "1.01") == 0) {
1268 st
->minor_version
= 1;
1271 if (strcmp(arg
, "1.2") == 0 ||
1272 strcmp(arg
, "1.02") == 0) {
1273 st
->minor_version
= 2;
1276 if (strcmp(arg
, "1") == 0 ||
1277 strcmp(arg
, "default") == 0) {
1278 st
->minor_version
= -1;
1286 /* find available size on device with this devsize, using
1287 * superblock type st, and reserving 'reserve' sectors for
1290 static __u64
avail_size1(struct supertype
*st
, __u64 devsize
)
1292 struct mdp_superblock_1
*super
= st
->sb
;
1297 /* creating: allow suitable space for bitmap */
1298 devsize
-= choose_bm_space(devsize
);
1300 else if (__le32_to_cpu(super
->feature_map
)&MD_FEATURE_BITMAP_OFFSET
) {
1301 /* hot-add. allow for actual size of bitmap */
1302 struct bitmap_super_s
*bsb
;
1303 bsb
= (struct bitmap_super_s
*)(((char*)super
)+1024);
1304 devsize
-= bitmap_sectors(bsb
);
1308 switch(st
->minor_version
) {
1309 case -1: /* no specified. Now time to set default */
1310 st
->minor_version
= 0;
1314 return ((devsize
- 8*2 ) & ~(4*2-1));
1316 /* at start, 4K for superblock and possible bitmap */
1317 return devsize
- 4*2;
1319 /* 4k from start, 4K for superblock and possible bitmap */
1320 return devsize
- (4+4)*2;
1326 add_internal_bitmap1(struct supertype
*st
,
1327 int *chunkp
, int delay
, int write_behind
,
1328 unsigned long long size
,
1329 int may_change
, int major
)
1332 * If not may_change, then this is a 'Grow', and the bitmap
1333 * must fit after the superblock.
1334 * If may_change, then this is create, and we can put the bitmap
1335 * before the superblock if we like, or may move the start.
1336 * If !may_change, the bitmap MUST live at offset of 1K, until
1337 * we get a sysfs interface.
1339 * size is in sectors, chunk is in bytes !!!
1342 unsigned long long bits
;
1343 unsigned long long max_bits
;
1344 unsigned long long min_chunk
;
1346 int chunk
= *chunkp
;
1348 struct mdp_superblock_1
*sb
= st
->sb
;
1349 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
) + 1024);
1351 switch(st
->minor_version
) {
1353 /* either 3K after the superblock, or some amount of space
1357 /* We are creating array, so we *know* how much room has
1361 room
= choose_bm_space(__le64_to_cpu(sb
->size
));
1363 /* make it 3K after the superblock */
1368 room
= __le64_to_cpu(sb
->super_offset
)
1369 - __le64_to_cpu(sb
->data_offset
)
1370 - __le64_to_cpu(sb
->data_size
);
1371 /* remove '1 ||' when we can set offset via sysfs */
1372 if (1 || (room
< 3*2 &&
1373 __le32_to_cpu(sb
->max_dev
) <= 384)) {
1377 offset
= 0; /* means movable offset */
1382 case 2: /* between superblock and data */
1385 room
= choose_bm_space(__le64_to_cpu(sb
->size
));
1387 room
= __le64_to_cpu(sb
->data_offset
)
1388 - __le64_to_cpu(sb
->super_offset
);
1389 if (1 || __le32_to_cpu(sb
->max_dev
) <= 384) {
1402 if (chunk
== UnSet
&& room
> 128*2)
1403 /* Limit to 128K of bitmap when chunk size not requested */
1406 max_bits
= (room
* 512 - sizeof(bitmap_super_t
)) * 8;
1408 min_chunk
= 4096; /* sub-page chunks don't work yet.. */
1409 bits
= (size
*512)/min_chunk
+1;
1410 while (bits
> max_bits
) {
1416 else if (chunk
< min_chunk
)
1417 return 0; /* chunk size too small */
1418 if (chunk
== 0) /* rounding problem */
1422 bits
= (size
*512) / chunk
+ 1;
1423 room
= ((bits
+7)/8 + sizeof(bitmap_super_t
) +511)/512;
1427 sb
->bitmap_offset
= __cpu_to_le32(offset
);
1429 sb
->feature_map
= __cpu_to_le32(__le32_to_cpu(sb
->feature_map
) | 1);
1430 memset(bms
, 0, sizeof(*bms
));
1431 bms
->magic
= __cpu_to_le32(BITMAP_MAGIC
);
1432 bms
->version
= __cpu_to_le32(major
);
1433 uuid_from_super1(st
, (int*)bms
->uuid
);
1434 bms
->chunksize
= __cpu_to_le32(chunk
);
1435 bms
->daemon_sleep
= __cpu_to_le32(delay
);
1436 bms
->sync_size
= __cpu_to_le64(size
);
1437 bms
->write_behind
= __cpu_to_le32(write_behind
);
1444 static void locate_bitmap1(struct supertype
*st
, int fd
)
1446 unsigned long long offset
;
1447 struct mdp_superblock_1
*sb
;
1451 if (st
->ss
->load_super(st
, fd
, NULL
))
1452 return; /* no error I hope... */
1457 offset
= __le64_to_cpu(sb
->super_offset
);
1458 offset
+= (int32_t) __le32_to_cpu(sb
->bitmap_offset
);
1461 lseek64(fd
, offset
<<9, 0);
1464 static int write_bitmap1(struct supertype
*st
, int fd
)
1466 struct mdp_superblock_1
*sb
= st
->sb
;
1467 bitmap_super_t
*bms
= (bitmap_super_t
*)(((char*)sb
)+1024);
1471 char abuf
[4096+512];
1472 char *buf
= (char*)(((long)(abuf
+512))&~511UL);
1474 locate_bitmap1(st
, fd
);
1476 memset(buf
, 0xff, 4096);
1477 memcpy(buf
, ((char*)sb
)+1024, sizeof(bitmap_super_t
));
1479 towrite
= __le64_to_cpu(bms
->sync_size
) / (__le32_to_cpu(bms
->chunksize
)>>9);
1480 towrite
= (towrite
+7) >> 3; /* bits to bytes */
1481 towrite
+= sizeof(bitmap_super_t
);
1482 towrite
= ROUND_UP(towrite
, 512);
1483 while (towrite
> 0) {
1487 n
= write(fd
, buf
, n
);
1492 memset(buf
, 0xff, 4096);
1501 static void free_super1(struct supertype
*st
)
1509 static int validate_geometry1(struct supertype
*st
, int level
,
1510 int layout
, int raiddisks
,
1511 int chunk
, unsigned long long size
,
1512 char *subdev
, unsigned long long *freesize
,
1515 unsigned long long ldsize
;
1518 if (level
== LEVEL_CONTAINER
)
1523 fd
= open(subdev
, O_RDONLY
|O_EXCL
, 0);
1526 fprintf(stderr
, Name
": super1.x cannot open %s: %s\n",
1527 subdev
, strerror(errno
));
1531 if (!get_dev_size(fd
, subdev
, &ldsize
)) {
1537 *freesize
= avail_size1(st
, ldsize
>> 9);
1540 #endif /* MDASSEMBLE */
1542 struct superswitch super1
= {
1544 .examine_super
= examine_super1
,
1545 .brief_examine_super
= brief_examine_super1
,
1546 .export_examine_super
= export_examine_super1
,
1547 .detail_super
= detail_super1
,
1548 .brief_detail_super
= brief_detail_super1
,
1549 .export_detail_super
= export_detail_super1
,
1550 .write_init_super
= write_init_super1
,
1551 .validate_geometry
= validate_geometry1
,
1552 .add_to_super
= add_to_super1
,
1554 .match_home
= match_home1
,
1555 .uuid_from_super
= uuid_from_super1
,
1556 .getinfo_super
= getinfo_super1
,
1557 .update_super
= update_super1
,
1558 .init_super
= init_super1
,
1559 .store_super
= store_super1
,
1560 .compare_super
= compare_super1
,
1561 .load_super
= load_super1
,
1562 .match_metadata_desc
= match_metadata_desc1
,
1563 .avail_size
= avail_size1
,
1564 .add_internal_bitmap
= add_internal_bitmap1
,
1565 .locate_bitmap
= locate_bitmap1
,
1566 .write_bitmap
= write_bitmap1
,
1567 .free_super
= free_super1
,
1568 #if __BYTE_ORDER == BIG_ENDIAN