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Commit | Line | Data |
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4b1ac34b NB |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
e736b623 | 4 | * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de> |
4b1ac34b NB |
5 | * |
6 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
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 | |
20 | * | |
21 | * Author: Neil Brown | |
e736b623 | 22 | * Email: <neilb@suse.de> |
4b1ac34b NB |
23 | */ |
24 | ||
8268ed74 | 25 | #define HAVE_STDINT_H 1 |
4b1ac34b | 26 | #include "mdadm.h" |
8268ed74 | 27 | #include "sha1.h" |
4b1ac34b NB |
28 | /* |
29 | * All handling for the 0.90.0 version superblock is in | |
30 | * this file. | |
31 | * This includes: | |
32 | * - finding, loading, and writing the superblock. | |
33 | * - initialising a new superblock | |
34 | * - printing the superblock for --examine | |
35 | * - printing part of the superblock for --detail | |
aba69144 | 36 | * .. other stuff |
4b1ac34b NB |
37 | */ |
38 | ||
39 | ||
40 | static unsigned long calc_sb0_csum(mdp_super_t *super) | |
41 | { | |
42 | unsigned long csum = super->sb_csum; | |
43 | unsigned long newcsum; | |
44 | super->sb_csum= 0 ; | |
45 | newcsum = calc_csum(super, MD_SB_BYTES); | |
46 | super->sb_csum = csum; | |
47 | return newcsum; | |
48 | } | |
49 | ||
586ed405 | 50 | |
ec9688ca | 51 | static void super0_swap_endian(struct mdp_superblock_s *sb) |
586ed405 NB |
52 | { |
53 | /* as super0 superblocks are host-endian, it is sometimes | |
aba69144 | 54 | * useful to be able to swap the endianness |
586ed405 NB |
55 | * as (almost) everything is u32's we byte-swap every 4byte |
56 | * number. | |
57 | * We then also have to swap the events_hi and events_lo | |
58 | */ | |
59 | char *sbc = (char *)sb; | |
60 | __u32 t32; | |
61 | int i; | |
62 | ||
63 | for (i=0; i < MD_SB_BYTES ; i+=4) { | |
64 | char t = sbc[i]; | |
65 | sbc[i] = sbc[i+3]; | |
66 | sbc[i+3] = t; | |
67 | t=sbc[i+1]; | |
68 | sbc[i+1]=sbc[i+2]; | |
69 | sbc[i+2]=t; | |
70 | } | |
71 | t32 = sb->events_hi; | |
72 | sb->events_hi = sb->events_lo; | |
73 | sb->events_lo = t32; | |
74 | ||
75 | t32 = sb->cp_events_hi; | |
76 | sb->cp_events_hi = sb->cp_events_lo; | |
77 | sb->cp_events_lo = t32; | |
78 | ||
353632d9 | 79 | } |
586ed405 | 80 | |
c7654afc | 81 | #ifndef MDASSEMBLE |
586ed405 | 82 | |
3da92f27 | 83 | static void examine_super0(struct supertype *st, char *homehost) |
4b1ac34b | 84 | { |
3da92f27 | 85 | mdp_super_t *sb = st->sb; |
4b1ac34b NB |
86 | time_t atime; |
87 | int d; | |
4180aa4d | 88 | int delta_extra = 0; |
4b1ac34b NB |
89 | char *c; |
90 | ||
91 | printf(" Magic : %08x\n", sb->md_magic); | |
d7ee65c9 | 92 | printf(" Version : %d.%02d.%02d\n", sb->major_version, sb->minor_version, |
4b1ac34b | 93 | sb->patch_version); |
a1cbd7d0 NB |
94 | if (sb->minor_version >= 90) { |
95 | printf(" UUID : %08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1, | |
4b1ac34b | 96 | sb->set_uuid2, sb->set_uuid3); |
a1cbd7d0 | 97 | if (homehost) { |
8268ed74 NB |
98 | char buf[20]; |
99 | void *hash = sha1_buffer(homehost, | |
100 | strlen(homehost), | |
101 | buf); | |
a1cbd7d0 NB |
102 | if (memcmp(&sb->set_uuid2, hash, 8)==0) |
103 | printf(" (local to host %s)", homehost); | |
104 | } | |
105 | printf("\n"); | |
106 | } else | |
4b1ac34b NB |
107 | printf(" UUID : %08x\n", sb->set_uuid0); |
108 | ||
8382f19b NB |
109 | if (sb->not_persistent) |
110 | printf(" Eedk : not persistent\n"); | |
111 | ||
4b1ac34b NB |
112 | atime = sb->ctime; |
113 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
114 | c=map_num(pers, sb->level); | |
115 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
c43f7d91 | 116 | if ((int)sb->level > 0) { |
d4633e06 | 117 | int ddsks = 0, ddsks_denom = 1; |
e3362544 NB |
118 | printf(" Used Dev Size : %d%s\n", sb->size, |
119 | human_size((long long)sb->size<<10)); | |
b674b5b8 NB |
120 | switch(sb->level) { |
121 | case 1: ddsks=1;break; | |
122 | case 4: | |
123 | case 5: ddsks = sb->raid_disks-1; break; | |
124 | case 6: ddsks = sb->raid_disks-2; break; | |
d4633e06 N |
125 | case 10: ddsks = sb->raid_disks; |
126 | ddsks_denom = (sb->layout&255) * ((sb->layout>>8)&255); | |
127 | } | |
128 | if (ddsks) { | |
129 | long long asize = sb->size; | |
130 | asize = (asize << 10) * ddsks / ddsks_denom; | |
131 | printf(" Array Size : %llu%s\n", | |
132 | asize >> 10, human_size(asize)); | |
b674b5b8 | 133 | } |
b674b5b8 | 134 | } |
4b1ac34b NB |
135 | printf(" Raid Devices : %d\n", sb->raid_disks); |
136 | printf(" Total Devices : %d\n", sb->nr_disks); | |
137 | printf("Preferred Minor : %d\n", sb->md_minor); | |
138 | printf("\n"); | |
b674b5b8 | 139 | if (sb->minor_version > 90 && (sb->reshape_position+1) != 0) { |
1e0d770c | 140 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)sb->reshape_position/2, human_size((long long)sb->reshape_position<<9)); |
b674b5b8 NB |
141 | if (sb->delta_disks) { |
142 | printf(" Delta Devices : %d", sb->delta_disks); | |
4180aa4d N |
143 | printf(" (%d->%d)\n", sb->raid_disks-sb->delta_disks, sb->raid_disks); |
144 | if (((int)sb->delta_disks) < 0) | |
145 | delta_extra = - sb->delta_disks; | |
b674b5b8 NB |
146 | } |
147 | if (sb->new_level != sb->level) { | |
148 | c = map_num(pers, sb->new_level); | |
149 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
150 | } | |
151 | if (sb->new_layout != sb->layout) { | |
152 | if (sb->level == 5) { | |
153 | c = map_num(r5layout, sb->new_layout); | |
154 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
155 | } | |
fe77a154 N |
156 | if (sb->level == 6) { |
157 | c = map_num(r6layout, sb->new_layout); | |
158 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
159 | } | |
b674b5b8 | 160 | if (sb->level == 10) { |
b578481c NB |
161 | printf(" New Layout : near=%d, %s=%d\n", |
162 | sb->new_layout&255, | |
163 | (sb->new_layout&0x10000)?"offset":"far", | |
164 | (sb->new_layout>>8)&255); | |
b674b5b8 NB |
165 | } |
166 | } | |
167 | if (sb->new_chunk != sb->chunk_size) | |
168 | printf(" New Chunksize : %d\n", sb->new_chunk); | |
169 | printf("\n"); | |
170 | } | |
4b1ac34b NB |
171 | atime = sb->utime; |
172 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
173 | printf(" State : %s\n", | |
174 | (sb->state&(1<<MD_SB_CLEAN))?"clean":"active"); | |
55935d51 NB |
175 | if (sb->state & (1<<MD_SB_BITMAP_PRESENT)) |
176 | printf("Internal Bitmap : present\n"); | |
4b1ac34b NB |
177 | printf(" Active Devices : %d\n", sb->active_disks); |
178 | printf("Working Devices : %d\n", sb->working_disks); | |
179 | printf(" Failed Devices : %d\n", sb->failed_disks); | |
180 | printf(" Spare Devices : %d\n", sb->spare_disks); | |
181 | if (calc_sb0_csum(sb) == sb->sb_csum) | |
182 | printf(" Checksum : %x - correct\n", sb->sb_csum); | |
183 | else | |
184 | printf(" Checksum : %x - expected %lx\n", sb->sb_csum, calc_sb0_csum(sb)); | |
1486e43f NB |
185 | printf(" Events : %llu\n", |
186 | ((unsigned long long)sb->events_hi << 32) | |
187 | + sb->events_lo); | |
4b1ac34b NB |
188 | printf("\n"); |
189 | if (sb->level == 5) { | |
190 | c = map_num(r5layout, sb->layout); | |
191 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
192 | } | |
fe77a154 N |
193 | if (sb->level == 6) { |
194 | c = map_num(r6layout, sb->layout); | |
195 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
196 | } | |
265e0f17 | 197 | if (sb->level == 10) { |
e4965ef8 N |
198 | printf(" Layout :"); |
199 | print_r10_layout(sb->layout); | |
200 | printf("\n"); | |
265e0f17 | 201 | } |
4b1ac34b NB |
202 | switch(sb->level) { |
203 | case 0: | |
204 | case 4: | |
205 | case 5: | |
2c102711 NB |
206 | case 6: |
207 | case 10: | |
4b1ac34b NB |
208 | printf(" Chunk Size : %dK\n", sb->chunk_size/1024); |
209 | break; | |
210 | case -1: | |
211 | printf(" Rounding : %dK\n", sb->chunk_size/1024); | |
212 | break; | |
353632d9 | 213 | default: break; |
4b1ac34b NB |
214 | } |
215 | printf("\n"); | |
216 | printf(" Number Major Minor RaidDevice State\n"); | |
4180aa4d | 217 | for (d= -1; d<(signed int)(sb->raid_disks+delta_extra + sb->spare_disks); d++) { |
4b1ac34b NB |
218 | mdp_disk_t *dp; |
219 | char *dv; | |
220 | char nb[5]; | |
dfd4d8ee | 221 | int wonly; |
4b1ac34b NB |
222 | if (d>=0) dp = &sb->disks[d]; |
223 | else dp = &sb->this_disk; | |
8f23b0b3 | 224 | snprintf(nb, sizeof(nb), "%4d", d); |
4b1ac34b NB |
225 | printf("%4s %5d %5d %5d %5d ", d < 0 ? "this" : nb, |
226 | dp->number, dp->major, dp->minor, dp->raid_disk); | |
dfd4d8ee NB |
227 | wonly = dp->state & (1<<MD_DISK_WRITEMOSTLY); |
228 | dp->state &= ~(1<<MD_DISK_WRITEMOSTLY); | |
4b1ac34b NB |
229 | if (dp->state & (1<<MD_DISK_FAULTY)) printf(" faulty"); |
230 | if (dp->state & (1<<MD_DISK_ACTIVE)) printf(" active"); | |
231 | if (dp->state & (1<<MD_DISK_SYNC)) printf(" sync"); | |
232 | if (dp->state & (1<<MD_DISK_REMOVED)) printf(" removed"); | |
dfd4d8ee | 233 | if (wonly) printf(" write-mostly"); |
4b1ac34b | 234 | if (dp->state == 0) printf(" spare"); |
16c6fa80 | 235 | if ((dv=map_dev(dp->major, dp->minor, 0))) |
4b1ac34b NB |
236 | printf(" %s", dv); |
237 | printf("\n"); | |
238 | if (d == -1) printf("\n"); | |
239 | } | |
240 | } | |
241 | ||
061f2c6a | 242 | static void brief_examine_super0(struct supertype *st, int verbose) |
4b1ac34b | 243 | { |
3da92f27 | 244 | mdp_super_t *sb = st->sb; |
4b1ac34b | 245 | char *c=map_num(pers, sb->level); |
2998bc01 | 246 | char devname[20]; |
2998bc01 NB |
247 | |
248 | sprintf(devname, "/dev/md%d", sb->md_minor); | |
4b1ac34b | 249 | |
061f2c6a N |
250 | if (verbose) { |
251 | printf("ARRAY %s level=%s num-devices=%d", | |
252 | devname, | |
253 | c?c:"-unknown-", sb->raid_disks); | |
254 | } else | |
255 | printf("ARRAY %s", devname); | |
256 | ||
4b1ac34b | 257 | if (sb->minor_version >= 90) |
061f2c6a | 258 | printf(" UUID=%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1, |
4b1ac34b NB |
259 | sb->set_uuid2, sb->set_uuid3); |
260 | else | |
061f2c6a | 261 | printf(" UUID=%08x", sb->set_uuid0); |
4b1ac34b NB |
262 | printf("\n"); |
263 | } | |
264 | ||
0d726f17 KS |
265 | static void export_examine_super0(struct supertype *st) |
266 | { | |
267 | mdp_super_t *sb = st->sb; | |
268 | ||
269 | printf("MD_LEVEL=%s\n", map_num(pers, sb->level)); | |
270 | printf("MD_DEVICES=%d\n", sb->raid_disks); | |
271 | if (sb->minor_version >= 90) | |
272 | printf("MD_UUID=%08x:%08x:%08x:%08x\n", | |
273 | sb->set_uuid0, sb->set_uuid1, | |
274 | sb->set_uuid2, sb->set_uuid3); | |
275 | else | |
276 | printf("MD_UUID=%08x\n", sb->set_uuid0); | |
277 | printf("MD_UPDATE_TIME=%llu\n", | |
278 | __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL); | |
279 | printf("MD_EVENTS=%llu\n", | |
280 | ((unsigned long long)sb->events_hi << 32) | |
281 | + sb->events_lo); | |
282 | } | |
283 | ||
3da92f27 | 284 | static void detail_super0(struct supertype *st, char *homehost) |
4b1ac34b | 285 | { |
3da92f27 | 286 | mdp_super_t *sb = st->sb; |
4b1ac34b NB |
287 | printf(" UUID : "); |
288 | if (sb->minor_version >= 90) | |
289 | printf("%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1, | |
290 | sb->set_uuid2, sb->set_uuid3); | |
291 | else | |
292 | printf("%08x", sb->set_uuid0); | |
b6750aa8 | 293 | if (homehost) { |
8268ed74 NB |
294 | char buf[20]; |
295 | void *hash = sha1_buffer(homehost, | |
296 | strlen(homehost), | |
297 | buf); | |
b6750aa8 NB |
298 | if (memcmp(&sb->set_uuid2, hash, 8)==0) |
299 | printf(" (local to host %s)", homehost); | |
300 | } | |
4b1ac34b NB |
301 | printf("\n Events : %d.%d\n\n", sb->events_hi, sb->events_lo); |
302 | } | |
303 | ||
3da92f27 | 304 | static void brief_detail_super0(struct supertype *st) |
4b1ac34b | 305 | { |
3da92f27 | 306 | mdp_super_t *sb = st->sb; |
4b1ac34b NB |
307 | printf(" UUID="); |
308 | if (sb->minor_version >= 90) | |
309 | printf("%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1, | |
310 | sb->set_uuid2, sb->set_uuid3); | |
311 | else | |
312 | printf("%08x", sb->set_uuid0); | |
313 | } | |
c7654afc | 314 | #endif |
83b6208e | 315 | |
3da92f27 | 316 | static int match_home0(struct supertype *st, char *homehost) |
83b6208e | 317 | { |
3da92f27 | 318 | mdp_super_t *sb = st->sb; |
8268ed74 | 319 | char buf[20]; |
40d28f0d N |
320 | char *hash; |
321 | ||
322 | if (!homehost) | |
323 | return 0; | |
324 | hash = sha1_buffer(homehost, | |
325 | strlen(homehost), | |
326 | buf); | |
83b6208e NB |
327 | |
328 | return (memcmp(&sb->set_uuid2, hash, 8)==0); | |
329 | } | |
330 | ||
3da92f27 | 331 | static void uuid_from_super0(struct supertype *st, int uuid[4]) |
4b1ac34b | 332 | { |
3da92f27 | 333 | mdp_super_t *super = st->sb; |
4b1ac34b NB |
334 | uuid[0] = super->set_uuid0; |
335 | if (super->minor_version >= 90) { | |
336 | uuid[1] = super->set_uuid1; | |
337 | uuid[2] = super->set_uuid2; | |
338 | uuid[3] = super->set_uuid3; | |
339 | } else { | |
340 | uuid[1] = 0; | |
341 | uuid[2] = 0; | |
342 | uuid[3] = 0; | |
343 | } | |
344 | } | |
345 | ||
a5d85af7 | 346 | static void getinfo_super0(struct supertype *st, struct mdinfo *info, char *map) |
4b1ac34b | 347 | { |
3da92f27 | 348 | mdp_super_t *sb = st->sb; |
4b1ac34b NB |
349 | int working = 0; |
350 | int i; | |
a5d85af7 | 351 | int map_disks = info->array.raid_disks; |
4b1ac34b | 352 | |
95eeceeb | 353 | memset(info, 0, sizeof(*info)); |
4b1ac34b NB |
354 | info->array.major_version = sb->major_version; |
355 | info->array.minor_version = sb->minor_version; | |
356 | info->array.patch_version = sb->patch_version; | |
357 | info->array.raid_disks = sb->raid_disks; | |
358 | info->array.level = sb->level; | |
265e0f17 | 359 | info->array.layout = sb->layout; |
4b1ac34b NB |
360 | info->array.md_minor = sb->md_minor; |
361 | info->array.ctime = sb->ctime; | |
353632d9 NB |
362 | info->array.utime = sb->utime; |
363 | info->array.chunk_size = sb->chunk_size; | |
583315d9 | 364 | info->array.state = sb->state; |
353632d9 | 365 | info->component_size = sb->size*2; |
4b1ac34b | 366 | |
c0c1acd6 N |
367 | if (sb->state & (1<<MD_SB_BITMAP_PRESENT)) |
368 | info->bitmap_offset = 8; | |
369 | ||
4b1ac34b NB |
370 | info->disk.state = sb->this_disk.state; |
371 | info->disk.major = sb->this_disk.major; | |
372 | info->disk.minor = sb->this_disk.minor; | |
373 | info->disk.raid_disk = sb->this_disk.raid_disk; | |
fbf8a0b7 | 374 | info->disk.number = sb->this_disk.number; |
4b1ac34b NB |
375 | |
376 | info->events = md_event(sb); | |
353632d9 | 377 | info->data_offset = 0; |
4b1ac34b | 378 | |
1522c538 | 379 | sprintf(info->text_version, "0.%d", sb->minor_version); |
a67dd8cc | 380 | info->safe_mode_delay = 200; |
1522c538 | 381 | |
3da92f27 | 382 | uuid_from_super0(st, info->uuid); |
947fd4dd | 383 | |
921d9e16 | 384 | info->recovery_start = MaxSector; |
353632d9 NB |
385 | if (sb->minor_version > 90 && (sb->reshape_position+1) != 0) { |
386 | info->reshape_active = 1; | |
387 | info->reshape_progress = sb->reshape_position; | |
388 | info->new_level = sb->new_level; | |
389 | info->delta_disks = sb->delta_disks; | |
390 | info->new_layout = sb->new_layout; | |
391 | info->new_chunk = sb->new_chunk; | |
4180aa4d N |
392 | if (info->delta_disks < 0) |
393 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
394 | } else |
395 | info->reshape_active = 0; | |
396 | ||
6e75048b AK |
397 | info->recovery_blocked = info->reshape_active; |
398 | ||
8a46fe84 | 399 | sprintf(info->name, "%d", sb->md_minor); |
4b1ac34b NB |
400 | /* work_disks is calculated rather than read directly */ |
401 | for (i=0; i < MD_SB_DISKS; i++) | |
402 | if ((sb->disks[i].state & (1<<MD_DISK_SYNC)) && | |
f21e18ca | 403 | (sb->disks[i].raid_disk < (unsigned)info->array.raid_disks) && |
4b1ac34b | 404 | (sb->disks[i].state & (1<<MD_DISK_ACTIVE)) && |
a5d85af7 | 405 | !(sb->disks[i].state & (1<<MD_DISK_FAULTY))) { |
4b1ac34b | 406 | working ++; |
a5d85af7 N |
407 | if (map && i < map_disks) |
408 | map[i] = 1; | |
409 | } else if (map && i < map_disks) | |
410 | map[i] = 0; | |
4b1ac34b NB |
411 | info->array.working_disks = working; |
412 | } | |
413 | ||
00bbdbda N |
414 | static struct mdinfo *container_content0(struct supertype *st, char *subarray) |
415 | { | |
416 | struct mdinfo *info; | |
417 | ||
418 | if (subarray) | |
419 | return NULL; | |
420 | ||
503975b9 | 421 | info = xmalloc(sizeof(*info)); |
00bbdbda N |
422 | getinfo_super0(st, info, NULL); |
423 | return info; | |
424 | } | |
4b1ac34b | 425 | |
68c7d6d7 | 426 | static int update_super0(struct supertype *st, struct mdinfo *info, |
3da92f27 | 427 | char *update, |
e5eac01f NB |
428 | char *devname, int verbose, |
429 | int uuid_set, char *homehost) | |
4b1ac34b | 430 | { |
5a31170d N |
431 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
432 | * if any change was made. For others, the return value is | |
433 | * ignored. | |
c4d831e1 | 434 | */ |
4b1ac34b | 435 | int rv = 0; |
3b7e9d0c | 436 | int uuid[4]; |
3da92f27 | 437 | mdp_super_t *sb = st->sb; |
def11332 N |
438 | |
439 | if (strcmp(update, "homehost") == 0 && | |
440 | homehost) { | |
441 | /* note that 'homehost' is special as it is really | |
442 | * a "uuid" update. | |
443 | */ | |
444 | uuid_set = 0; | |
445 | update = "uuid"; | |
446 | info->uuid[0] = sb->set_uuid0; | |
447 | info->uuid[1] = sb->set_uuid1; | |
448 | } | |
449 | ||
4b1ac34b NB |
450 | if (strcmp(update, "sparc2.2")==0 ) { |
451 | /* 2.2 sparc put the events in the wrong place | |
452 | * So we copy the tail of the superblock | |
453 | * up 4 bytes before continuing | |
454 | */ | |
455 | __u32 *sb32 = (__u32*)sb; | |
456 | memcpy(sb32+MD_SB_GENERIC_CONSTANT_WORDS+7, | |
457 | sb32+MD_SB_GENERIC_CONSTANT_WORDS+7+1, | |
458 | (MD_SB_WORDS - (MD_SB_GENERIC_CONSTANT_WORDS+7+1))*4); | |
dab6685f | 459 | if (verbose >= 0) |
dae45415 | 460 | pr_err("adjusting superblock of %s for 2.2/sparc compatibility.\n", |
e7b84f9d | 461 | devname); |
1e2b2765 | 462 | } else if (strcmp(update, "super-minor") ==0) { |
4b1ac34b | 463 | sb->md_minor = info->array.md_minor; |
dab6685f | 464 | if (verbose > 0) |
e7b84f9d | 465 | pr_err("updating superblock of %s with minor number %d\n", |
4b1ac34b | 466 | devname, info->array.md_minor); |
1e2b2765 | 467 | } else if (strcmp(update, "summaries") == 0) { |
f21e18ca | 468 | unsigned int i; |
4b1ac34b | 469 | /* set nr_disks, active_disks, working_disks, |
aba69144 | 470 | * failed_disks, spare_disks based on disks[] |
4b1ac34b NB |
471 | * array in superblock. |
472 | * Also make sure extra slots aren't 'failed' | |
473 | */ | |
474 | sb->nr_disks = sb->active_disks = | |
475 | sb->working_disks = sb->failed_disks = | |
476 | sb->spare_disks = 0; | |
aba69144 | 477 | for (i=0; i < MD_SB_DISKS ; i++) |
4b1ac34b NB |
478 | if (sb->disks[i].major || |
479 | sb->disks[i].minor) { | |
480 | int state = sb->disks[i].state; | |
481 | if (state & (1<<MD_DISK_REMOVED)) | |
482 | continue; | |
483 | sb->nr_disks++; | |
484 | if (state & (1<<MD_DISK_ACTIVE)) | |
485 | sb->active_disks++; | |
486 | if (state & (1<<MD_DISK_FAULTY)) | |
487 | sb->failed_disks++; | |
488 | else | |
489 | sb->working_disks++; | |
490 | if (state == 0) | |
491 | sb->spare_disks++; | |
492 | } else if (i >= sb->raid_disks && sb->disks[i].number == 0) | |
493 | sb->disks[i].state = 0; | |
1e2b2765 | 494 | } else if (strcmp(update, "force-one")==0) { |
67a8c82d NB |
495 | /* Not enough devices for a working array, so |
496 | * bring this one up-to-date. | |
497 | */ | |
c4d831e1 | 498 | __u32 ehi = sb->events_hi, elo = sb->events_lo; |
4b1ac34b NB |
499 | sb->events_hi = (info->events>>32) & 0xFFFFFFFF; |
500 | sb->events_lo = (info->events) & 0xFFFFFFFF; | |
c4d831e1 NB |
501 | if (sb->events_hi != ehi || |
502 | sb->events_lo != elo) | |
503 | rv = 1; | |
1e2b2765 | 504 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
505 | /* degraded array and 'force' requested, so |
506 | * maybe need to mark it 'clean' | |
507 | */ | |
c4d831e1 NB |
508 | if ((sb->level == 5 || sb->level == 4 || sb->level == 6) && |
509 | (sb->state & (1 << MD_SB_CLEAN)) == 0) { | |
4b1ac34b NB |
510 | /* need to force clean */ |
511 | sb->state |= (1 << MD_SB_CLEAN); | |
c4d831e1 NB |
512 | rv = 1; |
513 | } | |
1e2b2765 | 514 | } else if (strcmp(update, "assemble")==0) { |
4b1ac34b | 515 | int d = info->disk.number; |
dfd4d8ee | 516 | int wonly = sb->disks[d].state & (1<<MD_DISK_WRITEMOSTLY); |
672ca1b7 N |
517 | int mask = (1<<MD_DISK_WRITEMOSTLY); |
518 | int add = 0; | |
519 | if (sb->minor_version >= 91) | |
520 | /* During reshape we don't insist on everything | |
521 | * being marked 'sync' | |
522 | */ | |
523 | add = (1<<MD_DISK_SYNC); | |
524 | if (((sb->disks[d].state & ~mask) | add) | |
f21e18ca | 525 | != (unsigned)info->disk.state) { |
c4d831e1 | 526 | sb->disks[d].state = info->disk.state | wonly; |
4b1ac34b NB |
527 | rv = 1; |
528 | } | |
d43494fc N |
529 | if (info->reshape_active && |
530 | sb->minor_version > 90 && (sb->reshape_position+1) != 0 && | |
531 | info->delta_disks >= 0 && | |
532 | info->reshape_progress < sb->reshape_position) { | |
533 | sb->reshape_position = info->reshape_progress; | |
534 | rv = 1; | |
535 | } | |
536 | if (info->reshape_active && | |
537 | sb->minor_version > 90 && (sb->reshape_position+1) != 0 && | |
538 | info->delta_disks < 0 && | |
539 | info->reshape_progress > sb->reshape_position) { | |
540 | sb->reshape_position = info->reshape_progress; | |
541 | rv = 1; | |
542 | } | |
1e2b2765 | 543 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f752781f NB |
544 | memset(&sb->disks[info->disk.number], 0, sizeof(sb->disks[0])); |
545 | sb->disks[info->disk.number].number = info->disk.number; | |
546 | sb->disks[info->disk.number].major = info->disk.major; | |
547 | sb->disks[info->disk.number].minor = info->disk.minor; | |
548 | sb->disks[info->disk.number].raid_disk = info->disk.raid_disk; | |
549 | sb->disks[info->disk.number].state = info->disk.state; | |
550 | sb->this_disk = sb->disks[info->disk.number]; | |
1e2b2765 | 551 | } else if (strcmp(update, "linear-grow-update") == 0) { |
4b1ac34b NB |
552 | sb->raid_disks = info->array.raid_disks; |
553 | sb->nr_disks = info->array.nr_disks; | |
554 | sb->active_disks = info->array.active_disks; | |
555 | sb->working_disks = info->array.working_disks; | |
556 | memset(&sb->disks[info->disk.number], 0, sizeof(sb->disks[0])); | |
557 | sb->disks[info->disk.number].number = info->disk.number; | |
558 | sb->disks[info->disk.number].major = info->disk.major; | |
559 | sb->disks[info->disk.number].minor = info->disk.minor; | |
560 | sb->disks[info->disk.number].raid_disk = info->disk.raid_disk; | |
561 | sb->disks[info->disk.number].state = info->disk.state; | |
1e2b2765 | 562 | } else if (strcmp(update, "resync") == 0) { |
4b1ac34b NB |
563 | /* make sure resync happens */ |
564 | sb->state &= ~(1<<MD_SB_CLEAN); | |
565 | sb->recovery_cp = 0; | |
1e2b2765 | 566 | } else if (strcmp(update, "uuid") == 0) { |
e5eac01f | 567 | if (!uuid_set && homehost) { |
8268ed74 NB |
568 | char buf[20]; |
569 | char *hash = sha1_buffer(homehost, | |
570 | strlen(homehost), | |
571 | buf); | |
e5eac01f NB |
572 | memcpy(info->uuid+2, hash, 8); |
573 | } | |
7d99579f NB |
574 | sb->set_uuid0 = info->uuid[0]; |
575 | sb->set_uuid1 = info->uuid[1]; | |
576 | sb->set_uuid2 = info->uuid[2]; | |
577 | sb->set_uuid3 = info->uuid[3]; | |
14263cf1 NB |
578 | if (sb->state & (1<<MD_SB_BITMAP_PRESENT)) { |
579 | struct bitmap_super_s *bm; | |
580 | bm = (struct bitmap_super_s*)(sb+1); | |
3b7e9d0c LB |
581 | uuid_from_super0(st, uuid); |
582 | memcpy(bm->uuid, uuid, 16); | |
14263cf1 | 583 | } |
5a31170d N |
584 | } else if (strcmp(update, "no-bitmap") == 0) { |
585 | sb->state &= ~(1<<MD_SB_BITMAP_PRESENT); | |
1e2b2765 | 586 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 587 | sb->reshape_position = info->reshape_progress; |
16715c01 DL |
588 | else if (strcmp(update, "writemostly")==0) |
589 | sb->state |= (1<<MD_DISK_WRITEMOSTLY); | |
590 | else if (strcmp(update, "readwrite")==0) | |
591 | sb->state &= ~(1<<MD_DISK_WRITEMOSTLY); | |
1e2b2765 N |
592 | else |
593 | rv = -1; | |
4b1ac34b NB |
594 | |
595 | sb->sb_csum = calc_sb0_csum(sb); | |
596 | return rv; | |
597 | } | |
598 | ||
05697ec1 NB |
599 | /* |
600 | * For verion-0 superblock, the homehost is 'stored' in the | |
601 | * uuid. 8 bytes for a hash of the host leaving 8 bytes | |
602 | * of random material. | |
603 | * We use the first 8 bytes (64bits) of the sha1 of the | |
604 | * host name | |
605 | */ | |
4b1ac34b NB |
606 | |
607 | ||
3da92f27 | 608 | static int init_super0(struct supertype *st, mdu_array_info_t *info, |
3d3dd91e | 609 | unsigned long long size, char *ignored_name, char *homehost, |
83cd1e97 | 610 | int *uuid, unsigned long long data_offset) |
4b1ac34b | 611 | { |
6416d527 | 612 | mdp_super_t *sb; |
82d9eba6 | 613 | int spares; |
6416d527 | 614 | |
83cd1e97 N |
615 | if (data_offset != INVALID_SECTORS) { |
616 | fprintf(stderr, Name ": data-offset not support for 0.90\n"); | |
617 | return 0; | |
618 | } | |
619 | ||
b550887f N |
620 | if (posix_memalign((void**)&sb, 4096, |
621 | MD_SB_BYTES + ROUND_UP(sizeof(bitmap_super_t), 4096)) != 0) { | |
e7b84f9d | 622 | pr_err("%s could not allocate superblock\n", __func__); |
3d2c4fc7 DW |
623 | return 0; |
624 | } | |
55935d51 | 625 | memset(sb, 0, MD_SB_BYTES + sizeof(bitmap_super_t)); |
4b1ac34b | 626 | |
64557c33 | 627 | st->sb = sb; |
ba7eb04f | 628 | if (info == NULL) { |
f9ce90ba | 629 | /* zeroing the superblock */ |
82d9eba6 NB |
630 | return 0; |
631 | } | |
632 | ||
633 | spares = info->working_disks - info->active_disks; | |
634 | if (info->raid_disks + spares > MD_SB_DISKS) { | |
e7b84f9d | 635 | pr_err("too many devices requested: %d+%d > %d\n", |
82d9eba6 NB |
636 | info->raid_disks , spares, MD_SB_DISKS); |
637 | return 0; | |
f9ce90ba NB |
638 | } |
639 | ||
4b1ac34b NB |
640 | sb->md_magic = MD_SB_MAGIC; |
641 | sb->major_version = 0; | |
642 | sb->minor_version = 90; | |
643 | sb->patch_version = 0; | |
644 | sb->gvalid_words = 0; /* ignored */ | |
4b1ac34b NB |
645 | sb->ctime = time(0); |
646 | sb->level = info->level; | |
63ebe78f N |
647 | sb->size = size; |
648 | if (size != (unsigned long long)sb->size) | |
5dd497ee | 649 | return 0; |
4b1ac34b NB |
650 | sb->nr_disks = info->nr_disks; |
651 | sb->raid_disks = info->raid_disks; | |
652 | sb->md_minor = info->md_minor; | |
653 | sb->not_persistent = 0; | |
3d3dd91e NB |
654 | if (uuid) { |
655 | sb->set_uuid0 = uuid[0]; | |
656 | sb->set_uuid1 = uuid[1]; | |
657 | sb->set_uuid2 = uuid[2]; | |
658 | sb->set_uuid3 = uuid[3]; | |
659 | } else { | |
660 | int rfd = open("/dev/urandom", O_RDONLY); | |
661 | if (rfd < 0 || read(rfd, &sb->set_uuid0, 4) != 4) | |
662 | sb->set_uuid0 = random(); | |
663 | if (rfd < 0 || read(rfd, &sb->set_uuid1, 12) != 12) { | |
664 | sb->set_uuid1 = random(); | |
665 | sb->set_uuid2 = random(); | |
666 | sb->set_uuid3 = random(); | |
667 | } | |
668 | if (rfd >= 0) | |
669 | close(rfd); | |
dfe47e00 | 670 | } |
30d48159 | 671 | if (homehost && !uuid) { |
8268ed74 NB |
672 | char buf[20]; |
673 | char *hash = sha1_buffer(homehost, | |
674 | strlen(homehost), | |
675 | buf); | |
05697ec1 NB |
676 | memcpy(&sb->set_uuid2, hash, 8); |
677 | } | |
4b1ac34b NB |
678 | |
679 | sb->utime = sb->ctime; | |
680 | sb->state = info->state; | |
681 | sb->active_disks = info->active_disks; | |
682 | sb->working_disks = info->working_disks; | |
683 | sb->failed_disks = info->failed_disks; | |
234a131a | 684 | sb->spare_disks = info->spare_disks; |
4b1ac34b NB |
685 | sb->events_hi = 0; |
686 | sb->events_lo = 1; | |
687 | ||
688 | sb->layout = info->layout; | |
689 | sb->chunk_size = info->chunk_size; | |
690 | ||
82d9eba6 | 691 | return 1; |
4b1ac34b NB |
692 | } |
693 | ||
111d01fc NB |
694 | struct devinfo { |
695 | int fd; | |
696 | char *devname; | |
697 | mdu_disk_info_t disk; | |
698 | struct devinfo *next; | |
699 | }; | |
0e600426 N |
700 | |
701 | #ifndef MDASSEMBLE | |
4b1ac34b | 702 | /* Add a device to the superblock being created */ |
f20c3968 | 703 | static int add_to_super0(struct supertype *st, mdu_disk_info_t *dinfo, |
72ca9bcf | 704 | int fd, char *devname, unsigned long long data_offset) |
4b1ac34b | 705 | { |
3da92f27 | 706 | mdp_super_t *sb = st->sb; |
4b1ac34b | 707 | mdp_disk_t *dk = &sb->disks[dinfo->number]; |
111d01fc | 708 | struct devinfo *di, **dip; |
353632d9 | 709 | |
4b1ac34b NB |
710 | dk->number = dinfo->number; |
711 | dk->major = dinfo->major; | |
712 | dk->minor = dinfo->minor; | |
713 | dk->raid_disk = dinfo->raid_disk; | |
714 | dk->state = dinfo->state; | |
16715c01 DL |
715 | /* In case our source disk was writemostly, don't copy that bit */ |
716 | dk->state &= ~(1<<MD_DISK_WRITEMOSTLY); | |
111d01fc | 717 | |
d2ca6449 NB |
718 | sb->this_disk = sb->disks[dinfo->number]; |
719 | sb->sb_csum = calc_sb0_csum(sb); | |
720 | ||
111d01fc NB |
721 | dip = (struct devinfo **)&st->info; |
722 | while (*dip) | |
723 | dip = &(*dip)->next; | |
503975b9 | 724 | di = xmalloc(sizeof(struct devinfo)); |
111d01fc NB |
725 | di->fd = fd; |
726 | di->devname = devname; | |
727 | di->disk = *dinfo; | |
728 | di->next = NULL; | |
729 | *dip = di; | |
f20c3968 DW |
730 | |
731 | return 0; | |
4b1ac34b | 732 | } |
0e600426 | 733 | #endif |
4b1ac34b | 734 | |
3da92f27 | 735 | static int store_super0(struct supertype *st, int fd) |
4b1ac34b | 736 | { |
4b1ac34b NB |
737 | unsigned long long dsize; |
738 | unsigned long long offset; | |
3da92f27 | 739 | mdp_super_t *super = st->sb; |
beae1dfe NB |
740 | |
741 | if (!get_dev_size(fd, NULL, &dsize)) | |
742 | return 1; | |
4b1ac34b | 743 | |
eb6dae98 | 744 | if (dsize < MD_RESERVED_SECTORS*512) |
4b1ac34b | 745 | return 2; |
353632d9 | 746 | |
4b1ac34b NB |
747 | offset = MD_NEW_SIZE_SECTORS(dsize>>9); |
748 | ||
749 | offset *= 512; | |
750 | ||
751 | if (lseek64(fd, offset, 0)< 0LL) | |
752 | return 3; | |
753 | ||
754 | if (write(fd, super, sizeof(*super)) != sizeof(*super)) | |
755 | return 4; | |
756 | ||
14263cf1 NB |
757 | if (super->state & (1<<MD_SB_BITMAP_PRESENT)) { |
758 | struct bitmap_super_s * bm = (struct bitmap_super_s*)(super+1); | |
759 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) | |
b550887f N |
760 | if (write(fd, bm, ROUND_UP(sizeof(*bm),4096)) != |
761 | ROUND_UP(sizeof(*bm),4096)) | |
9fca7d62 | 762 | return 5; |
14263cf1 NB |
763 | } |
764 | ||
570c0542 | 765 | fsync(fd); |
4b1ac34b NB |
766 | return 0; |
767 | } | |
768 | ||
111d01fc NB |
769 | #ifndef MDASSEMBLE |
770 | static int write_init_super0(struct supertype *st) | |
4b1ac34b | 771 | { |
3da92f27 | 772 | mdp_super_t *sb = st->sb; |
111d01fc NB |
773 | int rv = 0; |
774 | struct devinfo *di; | |
4b1ac34b | 775 | |
111d01fc | 776 | for (di = st->info ; di && ! rv ; di = di->next) { |
4b1ac34b | 777 | |
111d01fc NB |
778 | if (di->disk.state == 1) |
779 | continue; | |
a0c8a17f NB |
780 | if (di->fd == -1) |
781 | continue; | |
ba728be7 | 782 | while (Kill(di->devname, NULL, 0, -1, 1) == 0) |
9277cc77 | 783 | ; |
8d75b7fc | 784 | |
111d01fc | 785 | sb->disks[di->disk.number].state &= ~(1<<MD_DISK_FAULTY); |
55935d51 | 786 | |
111d01fc NB |
787 | sb->this_disk = sb->disks[di->disk.number]; |
788 | sb->sb_csum = calc_sb0_csum(sb); | |
789 | rv = store_super0(st, di->fd); | |
55935d51 | 790 | |
111d01fc NB |
791 | if (rv == 0 && (sb->state & (1<<MD_SB_BITMAP_PRESENT))) |
792 | rv = st->ss->write_bitmap(st, di->fd); | |
793 | ||
794 | if (rv) | |
e7b84f9d N |
795 | pr_err("failed to write superblock to %s\n", |
796 | di->devname); | |
111d01fc | 797 | } |
4b1ac34b NB |
798 | return rv; |
799 | } | |
111d01fc | 800 | #endif |
4b1ac34b | 801 | |
64557c33 | 802 | static int compare_super0(struct supertype *st, struct supertype *tst) |
4b1ac34b NB |
803 | { |
804 | /* | |
805 | * return: | |
806 | * 0 same, or first was empty, and second was copied | |
807 | * 1 second had wrong number | |
808 | * 2 wrong uuid | |
809 | * 3 wrong other info | |
810 | */ | |
64557c33 NB |
811 | mdp_super_t *first = st->sb; |
812 | mdp_super_t *second = tst->sb; | |
4b1ac34b | 813 | int uuid1[4], uuid2[4]; |
64557c33 | 814 | |
4b1ac34b NB |
815 | if (second->md_magic != MD_SB_MAGIC) |
816 | return 1; | |
817 | if (!first) { | |
b550887f N |
818 | if (posix_memalign((void**)&first, 4096, |
819 | MD_SB_BYTES + | |
820 | ROUND_UP(sizeof(struct bitmap_super_s), 4096)) != 0) { | |
e7b84f9d | 821 | pr_err("%s could not allocate superblock\n", __func__); |
3d2c4fc7 DW |
822 | return 1; |
823 | } | |
14263cf1 | 824 | memcpy(first, second, MD_SB_BYTES + sizeof(struct bitmap_super_s)); |
64557c33 | 825 | st->sb = first; |
4b1ac34b NB |
826 | return 0; |
827 | } | |
828 | ||
3da92f27 NB |
829 | uuid_from_super0(st, uuid1); |
830 | uuid_from_super0(tst, uuid2); | |
f277ce36 | 831 | if (!same_uuid(uuid1, uuid2, 0)) |
4b1ac34b NB |
832 | return 2; |
833 | if (first->major_version != second->major_version || | |
834 | first->minor_version != second->minor_version || | |
835 | first->patch_version != second->patch_version || | |
836 | first->gvalid_words != second->gvalid_words || | |
837 | first->ctime != second->ctime || | |
838 | first->level != second->level || | |
839 | first->size != second->size || | |
840 | first->raid_disks != second->raid_disks ) | |
841 | return 3; | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
846 | ||
3da92f27 NB |
847 | static void free_super0(struct supertype *st); |
848 | ||
849 | static int load_super0(struct supertype *st, int fd, char *devname) | |
4b1ac34b NB |
850 | { |
851 | /* try to read in the superblock | |
852 | * Return: | |
853 | * 0 on success | |
854 | * 1 on cannot get superblock | |
855 | * 2 on superblock meaningless | |
856 | */ | |
4b1ac34b NB |
857 | unsigned long long dsize; |
858 | unsigned long long offset; | |
859 | mdp_super_t *super; | |
14263cf1 NB |
860 | int uuid[4]; |
861 | struct bitmap_super_s *bsb; | |
aba69144 | 862 | |
3da92f27 NB |
863 | free_super0(st); |
864 | ||
beae1dfe NB |
865 | if (!get_dev_size(fd, devname, &dsize)) |
866 | return 1; | |
4b1ac34b | 867 | |
eb6dae98 | 868 | if (dsize < MD_RESERVED_SECTORS*512) { |
4b1ac34b | 869 | if (devname) |
e7b84f9d N |
870 | pr_err("%s is too small for md: size is %llu sectors.\n", |
871 | devname, dsize); | |
4b1ac34b NB |
872 | return 1; |
873 | } | |
353632d9 | 874 | |
4b1ac34b NB |
875 | offset = MD_NEW_SIZE_SECTORS(dsize>>9); |
876 | ||
877 | offset *= 512; | |
878 | ||
4b1ac34b NB |
879 | if (lseek64(fd, offset, 0)< 0LL) { |
880 | if (devname) | |
e7b84f9d | 881 | pr_err("Cannot seek to superblock on %s: %s\n", |
4b1ac34b NB |
882 | devname, strerror(errno)); |
883 | return 1; | |
884 | } | |
885 | ||
b550887f N |
886 | if (posix_memalign((void**)&super, 4096, |
887 | MD_SB_BYTES + | |
888 | ROUND_UP(sizeof(bitmap_super_t), 4096)) != 0) { | |
e7b84f9d | 889 | pr_err("%s could not allocate superblock\n", __func__); |
3d2c4fc7 DW |
890 | return 1; |
891 | } | |
4b1ac34b NB |
892 | |
893 | if (read(fd, super, sizeof(*super)) != MD_SB_BYTES) { | |
894 | if (devname) | |
e7b84f9d | 895 | pr_err("Cannot read superblock on %s\n", |
4b1ac34b NB |
896 | devname); |
897 | free(super); | |
898 | return 1; | |
899 | } | |
900 | ||
586ed405 NB |
901 | if (st->ss && st->minor_version == 9) |
902 | super0_swap_endian(super); | |
903 | ||
4b1ac34b NB |
904 | if (super->md_magic != MD_SB_MAGIC) { |
905 | if (devname) | |
e7b84f9d | 906 | pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", |
4b1ac34b NB |
907 | devname, MD_SB_MAGIC, super->md_magic); |
908 | free(super); | |
909 | return 2; | |
910 | } | |
911 | ||
912 | if (super->major_version != 0) { | |
913 | if (devname) | |
e7b84f9d | 914 | pr_err("Cannot interpret superblock on %s - version is %d\n", |
4b1ac34b NB |
915 | devname, super->major_version); |
916 | free(super); | |
917 | return 2; | |
918 | } | |
64557c33 | 919 | st->sb = super; |
3da92f27 | 920 | |
82d9eba6 NB |
921 | if (st->ss == NULL) { |
922 | st->ss = &super0; | |
5f98d3cb | 923 | st->minor_version = super->minor_version; |
ea329559 | 924 | st->max_devs = MD_SB_DISKS; |
111d01fc | 925 | st->info = NULL; |
82d9eba6 NB |
926 | } |
927 | ||
14263cf1 NB |
928 | /* Now check on the bitmap superblock */ |
929 | if ((super->state & (1<<MD_SB_BITMAP_PRESENT)) == 0) | |
930 | return 0; | |
931 | /* Read the bitmap superblock and make sure it looks | |
932 | * valid. If it doesn't clear the bit. An --assemble --force | |
933 | * should get that written out. | |
934 | */ | |
b550887f N |
935 | if (read(fd, super+1, ROUND_UP(sizeof(struct bitmap_super_s),4096)) |
936 | != ROUND_UP(sizeof(struct bitmap_super_s),4096)) | |
14263cf1 NB |
937 | goto no_bitmap; |
938 | ||
3da92f27 | 939 | uuid_from_super0(st, uuid); |
14263cf1 NB |
940 | bsb = (struct bitmap_super_s *)(super+1); |
941 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || | |
942 | memcmp(bsb->uuid, uuid, 16) != 0) | |
943 | goto no_bitmap; | |
944 | return 0; | |
945 | ||
946 | no_bitmap: | |
947 | super->state &= ~(1<<MD_SB_BITMAP_PRESENT); | |
948 | ||
4b1ac34b NB |
949 | return 0; |
950 | } | |
f9ce90ba | 951 | |
82d9eba6 | 952 | static struct supertype *match_metadata_desc0(char *arg) |
f9ce90ba | 953 | { |
503975b9 | 954 | struct supertype *st = xcalloc(1, sizeof(*st)); |
82d9eba6 | 955 | |
4dd2df09 | 956 | st->container_devnm[0] = 0; |
82d9eba6 | 957 | st->ss = &super0; |
111d01fc | 958 | st->info = NULL; |
82d9eba6 | 959 | st->minor_version = 90; |
ea329559 | 960 | st->max_devs = MD_SB_DISKS; |
64557c33 | 961 | st->sb = NULL; |
9b2a22d3 N |
962 | /* we sometimes get 00.90 */ |
963 | while (arg[0] == '0' && arg[1] == '0') | |
964 | arg++; | |
f9ce90ba | 965 | if (strcmp(arg, "0") == 0 || |
26f467a9 | 966 | #ifdef DEFAULT_OLD_METADATA /* ifndef in super1.c */ |
967 | strcmp(arg, "default") == 0 || | |
968 | #endif /* DEFAULT_OLD_METADATA */ | |
50827504 N |
969 | strcmp(arg, "0.90") == 0 || |
970 | strcmp(arg, "") == 0 /* no metadata - i.e. non_persistent */ | |
f9ce90ba | 971 | ) |
82d9eba6 NB |
972 | return st; |
973 | ||
56f8add2 NB |
974 | st->minor_version = 91; /* reshape in progress */ |
975 | if (strcmp(arg, "0.91") == 0) /* For dup_super support */ | |
976 | return st; | |
977 | ||
586ed405 | 978 | st->minor_version = 9; /* flag for 'byte-swapped' */ |
ff1f6545 NB |
979 | if (strcmp(arg, "0.swap")==0 || |
980 | strcmp(arg, "0.9") == 0) /* For dup_super support */ | |
586ed405 NB |
981 | return st; |
982 | ||
82d9eba6 NB |
983 | free(st); |
984 | return NULL; | |
985 | } | |
986 | ||
387fcd59 N |
987 | static __u64 avail_size0(struct supertype *st, __u64 devsize, |
988 | unsigned long long data_offset) | |
82d9eba6 | 989 | { |
387fcd59 N |
990 | if (data_offset != 0 && data_offset != INVALID_SECTORS) |
991 | return 0ULL; | |
eb6dae98 | 992 | if (devsize < MD_RESERVED_SECTORS) |
82d9eba6 NB |
993 | return 0ULL; |
994 | return MD_NEW_SIZE_SECTORS(devsize); | |
f9ce90ba NB |
995 | } |
996 | ||
3da92f27 | 997 | static int add_internal_bitmap0(struct supertype *st, int *chunkp, |
199171a2 NB |
998 | int delay, int write_behind, |
999 | unsigned long long size, int may_change, | |
1000 | int major) | |
55935d51 NB |
1001 | { |
1002 | /* | |
1003 | * The bitmap comes immediately after the superblock and must be 60K in size | |
1004 | * at most. The default size is between 30K and 60K | |
1005 | * | |
8686f3ed | 1006 | * size is in sectors, chunk is in bytes !!! |
55935d51 | 1007 | */ |
1bf4e2d9 | 1008 | unsigned long long bits; |
50526e90 | 1009 | unsigned long long max_bits = (60*1024 - sizeof(bitmap_super_t))*8; |
55935d51 | 1010 | unsigned long long min_chunk; |
199171a2 | 1011 | int chunk = *chunkp; |
3da92f27 | 1012 | mdp_super_t *sb = st->sb; |
55935d51 | 1013 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MD_SB_BYTES); |
3b7e9d0c | 1014 | int uuid[4]; |
55935d51 | 1015 | |
353632d9 | 1016 | |
f277ce36 | 1017 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ |
8686f3ed | 1018 | bits = (size * 512) / min_chunk + 1; |
55935d51 NB |
1019 | while (bits > max_bits) { |
1020 | min_chunk *= 2; | |
1021 | bits = (bits+1)/2; | |
1022 | } | |
b8ab2a50 N |
1023 | if (chunk == UnSet) { |
1024 | /* A chunk size less than a few Megabytes gives poor | |
1025 | * performance without increasing resync noticeably | |
1026 | */ | |
55935d51 | 1027 | chunk = min_chunk; |
b8ab2a50 N |
1028 | if (chunk < 64*1024*1024) |
1029 | chunk = 64*1024*1024; | |
f21e18ca | 1030 | } else if ((unsigned long long)chunk < min_chunk) |
55935d51 NB |
1031 | return 0; /* chunk size too small */ |
1032 | ||
1033 | sb->state |= (1<<MD_SB_BITMAP_PRESENT); | |
1034 | ||
29e766a5 | 1035 | memset(bms, 0, sizeof(*bms)); |
dfd4d8ee | 1036 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 1037 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
1038 | uuid_from_super0(st, uuid); |
1039 | memcpy(bms->uuid, uuid, 16); | |
dfd4d8ee NB |
1040 | bms->chunksize = __cpu_to_le32(chunk); |
1041 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 1042 | bms->sync_size = __cpu_to_le64(size); |
dfd4d8ee | 1043 | bms->write_behind = __cpu_to_le32(write_behind); |
199171a2 | 1044 | *chunkp = chunk; |
55935d51 NB |
1045 | return 1; |
1046 | } | |
353632d9 | 1047 | |
55935d51 | 1048 | |
ec9688ca | 1049 | static void locate_bitmap0(struct supertype *st, int fd) |
55935d51 NB |
1050 | { |
1051 | unsigned long long dsize; | |
55935d51 | 1052 | unsigned long long offset; |
55935d51 | 1053 | |
beae1dfe NB |
1054 | if (!get_dev_size(fd, NULL, &dsize)) |
1055 | return; | |
1056 | ||
eb6dae98 | 1057 | if (dsize < MD_RESERVED_SECTORS*512) |
55935d51 | 1058 | return; |
353632d9 | 1059 | |
55935d51 NB |
1060 | offset = MD_NEW_SIZE_SECTORS(dsize>>9); |
1061 | ||
1062 | offset *= 512; | |
1063 | ||
1064 | offset += MD_SB_BYTES; | |
1065 | ||
1066 | lseek64(fd, offset, 0); | |
1067 | } | |
1068 | ||
ec9688ca | 1069 | static int write_bitmap0(struct supertype *st, int fd) |
8d75b7fc | 1070 | { |
8d75b7fc NB |
1071 | unsigned long long dsize; |
1072 | unsigned long long offset; | |
3da92f27 | 1073 | mdp_super_t *sb = st->sb; |
aba69144 | 1074 | |
8d75b7fc NB |
1075 | int rv = 0; |
1076 | ||
1077 | int towrite, n; | |
d669228f | 1078 | void *buf; |
8d75b7fc | 1079 | |
beae1dfe NB |
1080 | if (!get_dev_size(fd, NULL, &dsize)) |
1081 | return 1; | |
1082 | ||
eb6dae98 NB |
1083 | if (dsize < MD_RESERVED_SECTORS*512) |
1084 | return -1; | |
353632d9 | 1085 | |
8d75b7fc NB |
1086 | offset = MD_NEW_SIZE_SECTORS(dsize>>9); |
1087 | ||
1088 | offset *= 512; | |
1089 | ||
1090 | if (lseek64(fd, offset + 4096, 0)< 0LL) | |
1091 | return 3; | |
1092 | ||
d669228f JS |
1093 | if (posix_memalign(&buf, 4096, 4096)) |
1094 | return -ENOMEM; | |
1095 | ||
6416d527 NB |
1096 | memset(buf, 0xff, 4096); |
1097 | memcpy(buf, ((char*)sb)+MD_SB_BYTES, sizeof(bitmap_super_t)); | |
50526e90 | 1098 | towrite = 60*1024; |
8d75b7fc NB |
1099 | while (towrite > 0) { |
1100 | n = towrite; | |
6416d527 NB |
1101 | if (n > 4096) |
1102 | n = 4096; | |
8d75b7fc NB |
1103 | n = write(fd, buf, n); |
1104 | if (n > 0) | |
1105 | towrite -= n; | |
1106 | else | |
1107 | break; | |
6416d527 | 1108 | memset(buf, 0xff, 4096); |
8d75b7fc | 1109 | } |
dfd4d8ee | 1110 | fsync(fd); |
8d75b7fc NB |
1111 | if (towrite) |
1112 | rv = -2; | |
1113 | ||
d669228f | 1114 | free(buf); |
8d75b7fc NB |
1115 | return rv; |
1116 | } | |
55935d51 | 1117 | |
3da92f27 | 1118 | static void free_super0(struct supertype *st) |
df37ffc0 | 1119 | { |
3da92f27 NB |
1120 | if (st->sb) |
1121 | free(st->sb); | |
1cc7f4fe N |
1122 | while (st->info) { |
1123 | struct devinfo *di = st->info; | |
1124 | st->info = di->next; | |
1125 | if (di->fd >= 0) | |
1126 | close(di->fd); | |
1127 | free(di); | |
1128 | } | |
3da92f27 | 1129 | st->sb = NULL; |
df37ffc0 NB |
1130 | } |
1131 | ||
0e600426 | 1132 | #ifndef MDASSEMBLE |
17f25ca6 NB |
1133 | static int validate_geometry0(struct supertype *st, int level, |
1134 | int layout, int raiddisks, | |
c21e737b | 1135 | int *chunk, unsigned long long size, |
af4348dd | 1136 | unsigned long long data_offset, |
2c514b71 NB |
1137 | char *subdev, unsigned long long *freesize, |
1138 | int verbose) | |
17f25ca6 NB |
1139 | { |
1140 | unsigned long long ldsize; | |
1141 | int fd; | |
01619b48 N |
1142 | unsigned int tbmax = 4; |
1143 | ||
1144 | /* prior to linux 3.1, a but limits usable device size to 2TB. | |
1145 | * It was introduced in 2.6.29, but we won't worry about that detail | |
1146 | */ | |
1147 | if (get_linux_version() < 3001000) | |
1148 | tbmax = 2; | |
17f25ca6 | 1149 | |
b42f577a N |
1150 | if (level == LEVEL_CONTAINER) { |
1151 | if (verbose) | |
e7b84f9d | 1152 | pr_err("0.90 metadata does not support containers\n"); |
17f25ca6 | 1153 | return 0; |
b42f577a N |
1154 | } |
1155 | if (raiddisks > MD_SB_DISKS) { | |
1156 | if (verbose) | |
e7b84f9d | 1157 | pr_err("0.90 metadata supports at most %d devices per array\n", |
b42f577a | 1158 | MD_SB_DISKS); |
17f25ca6 | 1159 | return 0; |
b42f577a | 1160 | } |
9c8c1218 | 1161 | if (size >= tbmax * 2ULL*1024*1024*1024) { |
b42f577a | 1162 | if (verbose) |
e7b84f9d N |
1163 | pr_err("0.90 metadata supports at most " |
1164 | "%d terabytes per device\n", tbmax); | |
17f25ca6 | 1165 | return 0; |
b42f577a | 1166 | } |
bb7295f1 N |
1167 | if (chunk && *chunk == UnSet) |
1168 | *chunk = DEFAULT_CHUNK; | |
1169 | ||
17f25ca6 NB |
1170 | if (!subdev) |
1171 | return 1; | |
1172 | ||
1173 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
1174 | if (fd < 0) { | |
2c514b71 | 1175 | if (verbose) |
e7b84f9d | 1176 | pr_err("super0.90 cannot open %s: %s\n", |
2c514b71 | 1177 | subdev, strerror(errno)); |
17f25ca6 NB |
1178 | return 0; |
1179 | } | |
2c514b71 | 1180 | |
17f25ca6 NB |
1181 | if (!get_dev_size(fd, subdev, &ldsize)) { |
1182 | close(fd); | |
1183 | return 0; | |
1184 | } | |
1185 | close(fd); | |
1186 | ||
1187 | if (ldsize < MD_RESERVED_SECTORS * 512) | |
1188 | return 0; | |
17f25ca6 NB |
1189 | *freesize = MD_NEW_SIZE_SECTORS(ldsize >> 9); |
1190 | return 1; | |
1191 | } | |
0e600426 | 1192 | #endif /* MDASSEMBLE */ |
17f25ca6 | 1193 | |
f9ce90ba | 1194 | struct superswitch super0 = { |
c7654afc | 1195 | #ifndef MDASSEMBLE |
f9ce90ba NB |
1196 | .examine_super = examine_super0, |
1197 | .brief_examine_super = brief_examine_super0, | |
0d726f17 | 1198 | .export_examine_super = export_examine_super0, |
f9ce90ba NB |
1199 | .detail_super = detail_super0, |
1200 | .brief_detail_super = brief_detail_super0, | |
111d01fc | 1201 | .write_init_super = write_init_super0, |
0e600426 N |
1202 | .validate_geometry = validate_geometry0, |
1203 | .add_to_super = add_to_super0, | |
c7654afc | 1204 | #endif |
83b6208e | 1205 | .match_home = match_home0, |
f9ce90ba NB |
1206 | .uuid_from_super = uuid_from_super0, |
1207 | .getinfo_super = getinfo_super0, | |
00bbdbda | 1208 | .container_content = container_content0, |
f9ce90ba | 1209 | .update_super = update_super0, |
f9ce90ba | 1210 | .init_super = init_super0, |
f9ce90ba | 1211 | .store_super = store_super0, |
f9ce90ba NB |
1212 | .compare_super = compare_super0, |
1213 | .load_super = load_super0, | |
1214 | .match_metadata_desc = match_metadata_desc0, | |
82d9eba6 | 1215 | .avail_size = avail_size0, |
55935d51 NB |
1216 | .add_internal_bitmap = add_internal_bitmap0, |
1217 | .locate_bitmap = locate_bitmap0, | |
8d75b7fc | 1218 | .write_bitmap = write_bitmap0, |
df37ffc0 | 1219 | .free_super = free_super0, |
4cce4069 | 1220 | .name = "0.90", |
f9ce90ba | 1221 | }; |