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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; | |
88 | char *c; | |
89 | ||
90 | printf(" Magic : %08x\n", sb->md_magic); | |
d7ee65c9 | 91 | printf(" Version : %d.%02d.%02d\n", sb->major_version, sb->minor_version, |
4b1ac34b | 92 | sb->patch_version); |
a1cbd7d0 NB |
93 | if (sb->minor_version >= 90) { |
94 | printf(" UUID : %08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1, | |
4b1ac34b | 95 | sb->set_uuid2, sb->set_uuid3); |
a1cbd7d0 | 96 | if (homehost) { |
8268ed74 NB |
97 | char buf[20]; |
98 | void *hash = sha1_buffer(homehost, | |
99 | strlen(homehost), | |
100 | buf); | |
a1cbd7d0 NB |
101 | if (memcmp(&sb->set_uuid2, hash, 8)==0) |
102 | printf(" (local to host %s)", homehost); | |
103 | } | |
104 | printf("\n"); | |
105 | } else | |
4b1ac34b NB |
106 | printf(" UUID : %08x\n", sb->set_uuid0); |
107 | ||
8382f19b NB |
108 | if (sb->not_persistent) |
109 | printf(" Eedk : not persistent\n"); | |
110 | ||
4b1ac34b NB |
111 | atime = sb->ctime; |
112 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
113 | c=map_num(pers, sb->level); | |
114 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
b674b5b8 NB |
115 | if ((int)sb->level >= 0) { |
116 | int ddsks=0; | |
e3362544 NB |
117 | printf(" Used Dev Size : %d%s\n", sb->size, |
118 | human_size((long long)sb->size<<10)); | |
b674b5b8 NB |
119 | switch(sb->level) { |
120 | case 1: ddsks=1;break; | |
121 | case 4: | |
122 | case 5: ddsks = sb->raid_disks-1; break; | |
123 | case 6: ddsks = sb->raid_disks-2; break; | |
124 | case 10: ddsks = sb->raid_disks / (sb->layout&255) / ((sb->layout>>8)&255); | |
125 | } | |
126 | if (ddsks) | |
127 | printf(" Array Size : %llu%s\n", (unsigned long long)ddsks * sb->size, | |
128 | human_size(ddsks*(long long)sb->size<<10)); | |
129 | } | |
4b1ac34b NB |
130 | printf(" Raid Devices : %d\n", sb->raid_disks); |
131 | printf(" Total Devices : %d\n", sb->nr_disks); | |
132 | printf("Preferred Minor : %d\n", sb->md_minor); | |
133 | printf("\n"); | |
b674b5b8 | 134 | if (sb->minor_version > 90 && (sb->reshape_position+1) != 0) { |
1e0d770c | 135 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)sb->reshape_position/2, human_size((long long)sb->reshape_position<<9)); |
b674b5b8 NB |
136 | if (sb->delta_disks) { |
137 | printf(" Delta Devices : %d", sb->delta_disks); | |
138 | if (sb->delta_disks) | |
139 | printf(" (%d->%d)\n", sb->raid_disks-sb->delta_disks, sb->raid_disks); | |
140 | else | |
141 | printf(" (%d->%d)\n", sb->raid_disks, sb->raid_disks+sb->delta_disks); | |
142 | } | |
143 | if (sb->new_level != sb->level) { | |
144 | c = map_num(pers, sb->new_level); | |
145 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
146 | } | |
147 | if (sb->new_layout != sb->layout) { | |
148 | if (sb->level == 5) { | |
149 | c = map_num(r5layout, sb->new_layout); | |
150 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
151 | } | |
152 | if (sb->level == 10) { | |
b578481c NB |
153 | printf(" New Layout : near=%d, %s=%d\n", |
154 | sb->new_layout&255, | |
155 | (sb->new_layout&0x10000)?"offset":"far", | |
156 | (sb->new_layout>>8)&255); | |
b674b5b8 NB |
157 | } |
158 | } | |
159 | if (sb->new_chunk != sb->chunk_size) | |
160 | printf(" New Chunksize : %d\n", sb->new_chunk); | |
161 | printf("\n"); | |
162 | } | |
4b1ac34b NB |
163 | atime = sb->utime; |
164 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
165 | printf(" State : %s\n", | |
166 | (sb->state&(1<<MD_SB_CLEAN))?"clean":"active"); | |
55935d51 NB |
167 | if (sb->state & (1<<MD_SB_BITMAP_PRESENT)) |
168 | printf("Internal Bitmap : present\n"); | |
4b1ac34b NB |
169 | printf(" Active Devices : %d\n", sb->active_disks); |
170 | printf("Working Devices : %d\n", sb->working_disks); | |
171 | printf(" Failed Devices : %d\n", sb->failed_disks); | |
172 | printf(" Spare Devices : %d\n", sb->spare_disks); | |
173 | if (calc_sb0_csum(sb) == sb->sb_csum) | |
174 | printf(" Checksum : %x - correct\n", sb->sb_csum); | |
175 | else | |
176 | printf(" Checksum : %x - expected %lx\n", sb->sb_csum, calc_sb0_csum(sb)); | |
1486e43f NB |
177 | printf(" Events : %llu\n", |
178 | ((unsigned long long)sb->events_hi << 32) | |
179 | + sb->events_lo); | |
4b1ac34b NB |
180 | printf("\n"); |
181 | if (sb->level == 5) { | |
182 | c = map_num(r5layout, sb->layout); | |
183 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
184 | } | |
265e0f17 | 185 | if (sb->level == 10) { |
e4965ef8 N |
186 | printf(" Layout :"); |
187 | print_r10_layout(sb->layout); | |
188 | printf("\n"); | |
265e0f17 | 189 | } |
4b1ac34b NB |
190 | switch(sb->level) { |
191 | case 0: | |
192 | case 4: | |
193 | case 5: | |
2c102711 NB |
194 | case 6: |
195 | case 10: | |
4b1ac34b NB |
196 | printf(" Chunk Size : %dK\n", sb->chunk_size/1024); |
197 | break; | |
198 | case -1: | |
199 | printf(" Rounding : %dK\n", sb->chunk_size/1024); | |
200 | break; | |
353632d9 | 201 | default: break; |
4b1ac34b NB |
202 | } |
203 | printf("\n"); | |
204 | printf(" Number Major Minor RaidDevice State\n"); | |
205 | for (d= -1; d<(signed int)(sb->raid_disks+sb->spare_disks); d++) { | |
206 | mdp_disk_t *dp; | |
207 | char *dv; | |
208 | char nb[5]; | |
dfd4d8ee | 209 | int wonly; |
4b1ac34b NB |
210 | if (d>=0) dp = &sb->disks[d]; |
211 | else dp = &sb->this_disk; | |
8f23b0b3 | 212 | snprintf(nb, sizeof(nb), "%4d", d); |
4b1ac34b NB |
213 | printf("%4s %5d %5d %5d %5d ", d < 0 ? "this" : nb, |
214 | dp->number, dp->major, dp->minor, dp->raid_disk); | |
dfd4d8ee NB |
215 | wonly = dp->state & (1<<MD_DISK_WRITEMOSTLY); |
216 | dp->state &= ~(1<<MD_DISK_WRITEMOSTLY); | |
4b1ac34b NB |
217 | if (dp->state & (1<<MD_DISK_FAULTY)) printf(" faulty"); |
218 | if (dp->state & (1<<MD_DISK_ACTIVE)) printf(" active"); | |
219 | if (dp->state & (1<<MD_DISK_SYNC)) printf(" sync"); | |
220 | if (dp->state & (1<<MD_DISK_REMOVED)) printf(" removed"); | |
dfd4d8ee | 221 | if (wonly) printf(" write-mostly"); |
4b1ac34b | 222 | if (dp->state == 0) printf(" spare"); |
16c6fa80 | 223 | if ((dv=map_dev(dp->major, dp->minor, 0))) |
4b1ac34b NB |
224 | printf(" %s", dv); |
225 | printf("\n"); | |
226 | if (d == -1) printf("\n"); | |
227 | } | |
228 | } | |
229 | ||
061f2c6a | 230 | static void brief_examine_super0(struct supertype *st, int verbose) |
4b1ac34b | 231 | { |
3da92f27 | 232 | mdp_super_t *sb = st->sb; |
4b1ac34b | 233 | char *c=map_num(pers, sb->level); |
2998bc01 | 234 | char devname[20]; |
2998bc01 NB |
235 | |
236 | sprintf(devname, "/dev/md%d", sb->md_minor); | |
4b1ac34b | 237 | |
061f2c6a N |
238 | if (verbose) { |
239 | printf("ARRAY %s level=%s num-devices=%d", | |
240 | devname, | |
241 | c?c:"-unknown-", sb->raid_disks); | |
242 | } else | |
243 | printf("ARRAY %s", devname); | |
244 | ||
4b1ac34b | 245 | if (sb->minor_version >= 90) |
061f2c6a | 246 | printf(" UUID=%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1, |
4b1ac34b NB |
247 | sb->set_uuid2, sb->set_uuid3); |
248 | else | |
061f2c6a | 249 | printf(" UUID=%08x", sb->set_uuid0); |
4b1ac34b NB |
250 | printf("\n"); |
251 | } | |
252 | ||
0d726f17 KS |
253 | static void export_examine_super0(struct supertype *st) |
254 | { | |
255 | mdp_super_t *sb = st->sb; | |
256 | ||
257 | printf("MD_LEVEL=%s\n", map_num(pers, sb->level)); | |
258 | printf("MD_DEVICES=%d\n", sb->raid_disks); | |
259 | if (sb->minor_version >= 90) | |
260 | printf("MD_UUID=%08x:%08x:%08x:%08x\n", | |
261 | sb->set_uuid0, sb->set_uuid1, | |
262 | sb->set_uuid2, sb->set_uuid3); | |
263 | else | |
264 | printf("MD_UUID=%08x\n", sb->set_uuid0); | |
265 | printf("MD_UPDATE_TIME=%llu\n", | |
266 | __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL); | |
267 | printf("MD_EVENTS=%llu\n", | |
268 | ((unsigned long long)sb->events_hi << 32) | |
269 | + sb->events_lo); | |
270 | } | |
271 | ||
3da92f27 | 272 | static void detail_super0(struct supertype *st, char *homehost) |
4b1ac34b | 273 | { |
3da92f27 | 274 | mdp_super_t *sb = st->sb; |
4b1ac34b NB |
275 | printf(" UUID : "); |
276 | if (sb->minor_version >= 90) | |
277 | printf("%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1, | |
278 | sb->set_uuid2, sb->set_uuid3); | |
279 | else | |
280 | printf("%08x", sb->set_uuid0); | |
b6750aa8 | 281 | if (homehost) { |
8268ed74 NB |
282 | char buf[20]; |
283 | void *hash = sha1_buffer(homehost, | |
284 | strlen(homehost), | |
285 | buf); | |
b6750aa8 NB |
286 | if (memcmp(&sb->set_uuid2, hash, 8)==0) |
287 | printf(" (local to host %s)", homehost); | |
288 | } | |
4b1ac34b NB |
289 | printf("\n Events : %d.%d\n\n", sb->events_hi, sb->events_lo); |
290 | } | |
291 | ||
3da92f27 | 292 | static void brief_detail_super0(struct supertype *st) |
4b1ac34b | 293 | { |
3da92f27 | 294 | mdp_super_t *sb = st->sb; |
4b1ac34b NB |
295 | printf(" UUID="); |
296 | if (sb->minor_version >= 90) | |
297 | printf("%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1, | |
298 | sb->set_uuid2, sb->set_uuid3); | |
299 | else | |
300 | printf("%08x", sb->set_uuid0); | |
301 | } | |
c7654afc | 302 | #endif |
83b6208e | 303 | |
3da92f27 | 304 | static int match_home0(struct supertype *st, char *homehost) |
83b6208e | 305 | { |
3da92f27 | 306 | mdp_super_t *sb = st->sb; |
8268ed74 NB |
307 | char buf[20]; |
308 | char *hash = sha1_buffer(homehost, | |
309 | strlen(homehost), | |
310 | buf); | |
83b6208e NB |
311 | |
312 | return (memcmp(&sb->set_uuid2, hash, 8)==0); | |
313 | } | |
314 | ||
3da92f27 | 315 | static void uuid_from_super0(struct supertype *st, int uuid[4]) |
4b1ac34b | 316 | { |
3da92f27 | 317 | mdp_super_t *super = st->sb; |
4b1ac34b NB |
318 | uuid[0] = super->set_uuid0; |
319 | if (super->minor_version >= 90) { | |
320 | uuid[1] = super->set_uuid1; | |
321 | uuid[2] = super->set_uuid2; | |
322 | uuid[3] = super->set_uuid3; | |
323 | } else { | |
324 | uuid[1] = 0; | |
325 | uuid[2] = 0; | |
326 | uuid[3] = 0; | |
327 | } | |
328 | } | |
329 | ||
3da92f27 | 330 | static void getinfo_super0(struct supertype *st, struct mdinfo *info) |
4b1ac34b | 331 | { |
3da92f27 | 332 | mdp_super_t *sb = st->sb; |
4b1ac34b NB |
333 | int working = 0; |
334 | int i; | |
335 | ||
336 | info->array.major_version = sb->major_version; | |
337 | info->array.minor_version = sb->minor_version; | |
338 | info->array.patch_version = sb->patch_version; | |
339 | info->array.raid_disks = sb->raid_disks; | |
340 | info->array.level = sb->level; | |
265e0f17 | 341 | info->array.layout = sb->layout; |
4b1ac34b NB |
342 | info->array.md_minor = sb->md_minor; |
343 | info->array.ctime = sb->ctime; | |
353632d9 NB |
344 | info->array.utime = sb->utime; |
345 | info->array.chunk_size = sb->chunk_size; | |
583315d9 | 346 | info->array.state = sb->state; |
353632d9 | 347 | info->component_size = sb->size*2; |
4b1ac34b NB |
348 | |
349 | info->disk.state = sb->this_disk.state; | |
350 | info->disk.major = sb->this_disk.major; | |
351 | info->disk.minor = sb->this_disk.minor; | |
352 | info->disk.raid_disk = sb->this_disk.raid_disk; | |
fbf8a0b7 | 353 | info->disk.number = sb->this_disk.number; |
4b1ac34b NB |
354 | |
355 | info->events = md_event(sb); | |
353632d9 | 356 | info->data_offset = 0; |
4b1ac34b | 357 | |
1522c538 | 358 | sprintf(info->text_version, "0.%d", sb->minor_version); |
a67dd8cc | 359 | info->safe_mode_delay = 200; |
1522c538 | 360 | |
3da92f27 | 361 | uuid_from_super0(st, info->uuid); |
947fd4dd | 362 | |
353632d9 NB |
363 | if (sb->minor_version > 90 && (sb->reshape_position+1) != 0) { |
364 | info->reshape_active = 1; | |
365 | info->reshape_progress = sb->reshape_position; | |
366 | info->new_level = sb->new_level; | |
367 | info->delta_disks = sb->delta_disks; | |
368 | info->new_layout = sb->new_layout; | |
369 | info->new_chunk = sb->new_chunk; | |
370 | } else | |
371 | info->reshape_active = 0; | |
372 | ||
8a46fe84 | 373 | sprintf(info->name, "%d", sb->md_minor); |
4b1ac34b NB |
374 | /* work_disks is calculated rather than read directly */ |
375 | for (i=0; i < MD_SB_DISKS; i++) | |
376 | if ((sb->disks[i].state & (1<<MD_DISK_SYNC)) && | |
08110d41 | 377 | (sb->disks[i].raid_disk < info->array.raid_disks) && |
4b1ac34b NB |
378 | (sb->disks[i].state & (1<<MD_DISK_ACTIVE)) && |
379 | !(sb->disks[i].state & (1<<MD_DISK_FAULTY))) | |
380 | working ++; | |
381 | info->array.working_disks = working; | |
382 | } | |
383 | ||
384 | ||
68c7d6d7 | 385 | static int update_super0(struct supertype *st, struct mdinfo *info, |
3da92f27 | 386 | char *update, |
e5eac01f NB |
387 | char *devname, int verbose, |
388 | int uuid_set, char *homehost) | |
4b1ac34b | 389 | { |
c4d831e1 NB |
390 | /* NOTE: for 'assemble' and 'force' we need to return non-zero if any change was made. |
391 | * For others, the return value is ignored. | |
392 | */ | |
4b1ac34b | 393 | int rv = 0; |
3da92f27 | 394 | mdp_super_t *sb = st->sb; |
4b1ac34b NB |
395 | if (strcmp(update, "sparc2.2")==0 ) { |
396 | /* 2.2 sparc put the events in the wrong place | |
397 | * So we copy the tail of the superblock | |
398 | * up 4 bytes before continuing | |
399 | */ | |
400 | __u32 *sb32 = (__u32*)sb; | |
401 | memcpy(sb32+MD_SB_GENERIC_CONSTANT_WORDS+7, | |
402 | sb32+MD_SB_GENERIC_CONSTANT_WORDS+7+1, | |
403 | (MD_SB_WORDS - (MD_SB_GENERIC_CONSTANT_WORDS+7+1))*4); | |
dab6685f NB |
404 | if (verbose >= 0) |
405 | fprintf (stderr, Name ": adjusting superblock of %s for 2.2/sparc compatability.\n", | |
406 | devname); | |
4b1ac34b NB |
407 | } |
408 | if (strcmp(update, "super-minor") ==0) { | |
409 | sb->md_minor = info->array.md_minor; | |
dab6685f | 410 | if (verbose > 0) |
4b1ac34b NB |
411 | fprintf(stderr, Name ": updating superblock of %s with minor number %d\n", |
412 | devname, info->array.md_minor); | |
413 | } | |
414 | if (strcmp(update, "summaries") == 0) { | |
415 | int i; | |
416 | /* set nr_disks, active_disks, working_disks, | |
aba69144 | 417 | * failed_disks, spare_disks based on disks[] |
4b1ac34b NB |
418 | * array in superblock. |
419 | * Also make sure extra slots aren't 'failed' | |
420 | */ | |
421 | sb->nr_disks = sb->active_disks = | |
422 | sb->working_disks = sb->failed_disks = | |
423 | sb->spare_disks = 0; | |
aba69144 | 424 | for (i=0; i < MD_SB_DISKS ; i++) |
4b1ac34b NB |
425 | if (sb->disks[i].major || |
426 | sb->disks[i].minor) { | |
427 | int state = sb->disks[i].state; | |
428 | if (state & (1<<MD_DISK_REMOVED)) | |
429 | continue; | |
430 | sb->nr_disks++; | |
431 | if (state & (1<<MD_DISK_ACTIVE)) | |
432 | sb->active_disks++; | |
433 | if (state & (1<<MD_DISK_FAULTY)) | |
434 | sb->failed_disks++; | |
435 | else | |
436 | sb->working_disks++; | |
437 | if (state == 0) | |
438 | sb->spare_disks++; | |
439 | } else if (i >= sb->raid_disks && sb->disks[i].number == 0) | |
440 | sb->disks[i].state = 0; | |
441 | } | |
67a8c82d NB |
442 | if (strcmp(update, "force-one")==0) { |
443 | /* Not enough devices for a working array, so | |
444 | * bring this one up-to-date. | |
445 | */ | |
c4d831e1 | 446 | __u32 ehi = sb->events_hi, elo = sb->events_lo; |
4b1ac34b NB |
447 | sb->events_hi = (info->events>>32) & 0xFFFFFFFF; |
448 | sb->events_lo = (info->events) & 0xFFFFFFFF; | |
c4d831e1 NB |
449 | if (sb->events_hi != ehi || |
450 | sb->events_lo != elo) | |
451 | rv = 1; | |
67a8c82d NB |
452 | } |
453 | if (strcmp(update, "force-array")==0) { | |
454 | /* degraded array and 'force' requested, so | |
455 | * maybe need to mark it 'clean' | |
456 | */ | |
c4d831e1 NB |
457 | if ((sb->level == 5 || sb->level == 4 || sb->level == 6) && |
458 | (sb->state & (1 << MD_SB_CLEAN)) == 0) { | |
4b1ac34b NB |
459 | /* need to force clean */ |
460 | sb->state |= (1 << MD_SB_CLEAN); | |
c4d831e1 NB |
461 | rv = 1; |
462 | } | |
4b1ac34b NB |
463 | } |
464 | if (strcmp(update, "assemble")==0) { | |
465 | int d = info->disk.number; | |
dfd4d8ee | 466 | int wonly = sb->disks[d].state & (1<<MD_DISK_WRITEMOSTLY); |
c4d831e1 NB |
467 | if ((sb->disks[d].state & ~(1<<MD_DISK_WRITEMOSTLY)) |
468 | != info->disk.state) { | |
469 | sb->disks[d].state = info->disk.state | wonly; | |
4b1ac34b NB |
470 | rv = 1; |
471 | } | |
472 | } | |
f752781f NB |
473 | if (strcmp(update, "linear-grow-new") == 0) { |
474 | memset(&sb->disks[info->disk.number], 0, sizeof(sb->disks[0])); | |
475 | sb->disks[info->disk.number].number = info->disk.number; | |
476 | sb->disks[info->disk.number].major = info->disk.major; | |
477 | sb->disks[info->disk.number].minor = info->disk.minor; | |
478 | sb->disks[info->disk.number].raid_disk = info->disk.raid_disk; | |
479 | sb->disks[info->disk.number].state = info->disk.state; | |
480 | sb->this_disk = sb->disks[info->disk.number]; | |
481 | } | |
482 | if (strcmp(update, "linear-grow-update") == 0) { | |
4b1ac34b NB |
483 | sb->raid_disks = info->array.raid_disks; |
484 | sb->nr_disks = info->array.nr_disks; | |
485 | sb->active_disks = info->array.active_disks; | |
486 | sb->working_disks = info->array.working_disks; | |
487 | memset(&sb->disks[info->disk.number], 0, sizeof(sb->disks[0])); | |
488 | sb->disks[info->disk.number].number = info->disk.number; | |
489 | sb->disks[info->disk.number].major = info->disk.major; | |
490 | sb->disks[info->disk.number].minor = info->disk.minor; | |
491 | sb->disks[info->disk.number].raid_disk = info->disk.raid_disk; | |
492 | sb->disks[info->disk.number].state = info->disk.state; | |
4b1ac34b NB |
493 | } |
494 | if (strcmp(update, "resync") == 0) { | |
495 | /* make sure resync happens */ | |
496 | sb->state &= ~(1<<MD_SB_CLEAN); | |
497 | sb->recovery_cp = 0; | |
498 | } | |
0237e0ca NB |
499 | if (strcmp(update, "homehost") == 0 && |
500 | homehost) { | |
501 | uuid_set = 0; | |
502 | update = "uuid"; | |
503 | info->uuid[0] = sb->set_uuid0; | |
504 | info->uuid[1] = sb->set_uuid1; | |
505 | } | |
7d99579f | 506 | if (strcmp(update, "uuid") == 0) { |
e5eac01f | 507 | if (!uuid_set && homehost) { |
8268ed74 NB |
508 | char buf[20]; |
509 | char *hash = sha1_buffer(homehost, | |
510 | strlen(homehost), | |
511 | buf); | |
e5eac01f NB |
512 | memcpy(info->uuid+2, hash, 8); |
513 | } | |
7d99579f NB |
514 | sb->set_uuid0 = info->uuid[0]; |
515 | sb->set_uuid1 = info->uuid[1]; | |
516 | sb->set_uuid2 = info->uuid[2]; | |
517 | sb->set_uuid3 = info->uuid[3]; | |
14263cf1 NB |
518 | if (sb->state & (1<<MD_SB_BITMAP_PRESENT)) { |
519 | struct bitmap_super_s *bm; | |
520 | bm = (struct bitmap_super_s*)(sb+1); | |
3da92f27 | 521 | uuid_from_super0(st, (int*)bm->uuid); |
14263cf1 | 522 | } |
7d99579f | 523 | } |
353632d9 NB |
524 | if (strcmp(update, "_reshape_progress")==0) |
525 | sb->reshape_position = info->reshape_progress; | |
4b1ac34b NB |
526 | |
527 | sb->sb_csum = calc_sb0_csum(sb); | |
528 | return rv; | |
529 | } | |
530 | ||
05697ec1 NB |
531 | /* |
532 | * For verion-0 superblock, the homehost is 'stored' in the | |
533 | * uuid. 8 bytes for a hash of the host leaving 8 bytes | |
534 | * of random material. | |
535 | * We use the first 8 bytes (64bits) of the sha1 of the | |
536 | * host name | |
537 | */ | |
4b1ac34b NB |
538 | |
539 | ||
3da92f27 | 540 | static int init_super0(struct supertype *st, mdu_array_info_t *info, |
3d3dd91e NB |
541 | unsigned long long size, char *ignored_name, char *homehost, |
542 | int *uuid) | |
4b1ac34b | 543 | { |
6416d527 | 544 | mdp_super_t *sb; |
82d9eba6 | 545 | int spares; |
6416d527 | 546 | |
b550887f N |
547 | if (posix_memalign((void**)&sb, 4096, |
548 | MD_SB_BYTES + ROUND_UP(sizeof(bitmap_super_t), 4096)) != 0) { | |
3d2c4fc7 DW |
549 | fprintf(stderr, Name ": %s could not allocate superblock\n", __func__); |
550 | return 0; | |
551 | } | |
55935d51 | 552 | memset(sb, 0, MD_SB_BYTES + sizeof(bitmap_super_t)); |
4b1ac34b | 553 | |
64557c33 | 554 | st->sb = sb; |
ba7eb04f | 555 | if (info == NULL) { |
f9ce90ba | 556 | /* zeroing the superblock */ |
82d9eba6 NB |
557 | return 0; |
558 | } | |
559 | ||
560 | spares = info->working_disks - info->active_disks; | |
561 | if (info->raid_disks + spares > MD_SB_DISKS) { | |
562 | fprintf(stderr, Name ": too many devices requested: %d+%d > %d\n", | |
563 | info->raid_disks , spares, MD_SB_DISKS); | |
564 | return 0; | |
f9ce90ba NB |
565 | } |
566 | ||
4b1ac34b NB |
567 | sb->md_magic = MD_SB_MAGIC; |
568 | sb->major_version = 0; | |
569 | sb->minor_version = 90; | |
570 | sb->patch_version = 0; | |
571 | sb->gvalid_words = 0; /* ignored */ | |
4b1ac34b NB |
572 | sb->ctime = time(0); |
573 | sb->level = info->level; | |
5dd497ee NB |
574 | if (size != info->size) |
575 | return 0; | |
4b1ac34b NB |
576 | sb->size = info->size; |
577 | sb->nr_disks = info->nr_disks; | |
578 | sb->raid_disks = info->raid_disks; | |
579 | sb->md_minor = info->md_minor; | |
580 | sb->not_persistent = 0; | |
3d3dd91e NB |
581 | if (uuid) { |
582 | sb->set_uuid0 = uuid[0]; | |
583 | sb->set_uuid1 = uuid[1]; | |
584 | sb->set_uuid2 = uuid[2]; | |
585 | sb->set_uuid3 = uuid[3]; | |
586 | } else { | |
587 | int rfd = open("/dev/urandom", O_RDONLY); | |
588 | if (rfd < 0 || read(rfd, &sb->set_uuid0, 4) != 4) | |
589 | sb->set_uuid0 = random(); | |
590 | if (rfd < 0 || read(rfd, &sb->set_uuid1, 12) != 12) { | |
591 | sb->set_uuid1 = random(); | |
592 | sb->set_uuid2 = random(); | |
593 | sb->set_uuid3 = random(); | |
594 | } | |
595 | if (rfd >= 0) | |
596 | close(rfd); | |
dfe47e00 | 597 | } |
05697ec1 | 598 | if (homehost) { |
8268ed74 NB |
599 | char buf[20]; |
600 | char *hash = sha1_buffer(homehost, | |
601 | strlen(homehost), | |
602 | buf); | |
05697ec1 NB |
603 | memcpy(&sb->set_uuid2, hash, 8); |
604 | } | |
4b1ac34b NB |
605 | |
606 | sb->utime = sb->ctime; | |
607 | sb->state = info->state; | |
608 | sb->active_disks = info->active_disks; | |
609 | sb->working_disks = info->working_disks; | |
610 | sb->failed_disks = info->failed_disks; | |
234a131a | 611 | sb->spare_disks = info->spare_disks; |
4b1ac34b NB |
612 | sb->events_hi = 0; |
613 | sb->events_lo = 1; | |
614 | ||
615 | sb->layout = info->layout; | |
616 | sb->chunk_size = info->chunk_size; | |
617 | ||
82d9eba6 | 618 | return 1; |
4b1ac34b NB |
619 | } |
620 | ||
111d01fc NB |
621 | struct devinfo { |
622 | int fd; | |
623 | char *devname; | |
624 | mdu_disk_info_t disk; | |
625 | struct devinfo *next; | |
626 | }; | |
0e600426 N |
627 | |
628 | #ifndef MDASSEMBLE | |
4b1ac34b | 629 | /* Add a device to the superblock being created */ |
f20c3968 | 630 | static int add_to_super0(struct supertype *st, mdu_disk_info_t *dinfo, |
111d01fc | 631 | int fd, char *devname) |
4b1ac34b | 632 | { |
3da92f27 | 633 | mdp_super_t *sb = st->sb; |
4b1ac34b | 634 | mdp_disk_t *dk = &sb->disks[dinfo->number]; |
111d01fc | 635 | struct devinfo *di, **dip; |
353632d9 | 636 | |
4b1ac34b NB |
637 | dk->number = dinfo->number; |
638 | dk->major = dinfo->major; | |
639 | dk->minor = dinfo->minor; | |
640 | dk->raid_disk = dinfo->raid_disk; | |
641 | dk->state = dinfo->state; | |
111d01fc | 642 | |
d2ca6449 NB |
643 | sb->this_disk = sb->disks[dinfo->number]; |
644 | sb->sb_csum = calc_sb0_csum(sb); | |
645 | ||
111d01fc NB |
646 | dip = (struct devinfo **)&st->info; |
647 | while (*dip) | |
648 | dip = &(*dip)->next; | |
649 | di = malloc(sizeof(struct devinfo)); | |
650 | di->fd = fd; | |
651 | di->devname = devname; | |
652 | di->disk = *dinfo; | |
653 | di->next = NULL; | |
654 | *dip = di; | |
f20c3968 DW |
655 | |
656 | return 0; | |
4b1ac34b | 657 | } |
0e600426 | 658 | #endif |
4b1ac34b | 659 | |
3da92f27 | 660 | static int store_super0(struct supertype *st, int fd) |
4b1ac34b | 661 | { |
4b1ac34b NB |
662 | unsigned long long dsize; |
663 | unsigned long long offset; | |
3da92f27 | 664 | mdp_super_t *super = st->sb; |
beae1dfe NB |
665 | |
666 | if (!get_dev_size(fd, NULL, &dsize)) | |
667 | return 1; | |
4b1ac34b | 668 | |
eb6dae98 | 669 | if (dsize < MD_RESERVED_SECTORS*512) |
4b1ac34b | 670 | return 2; |
353632d9 | 671 | |
4b1ac34b NB |
672 | offset = MD_NEW_SIZE_SECTORS(dsize>>9); |
673 | ||
674 | offset *= 512; | |
675 | ||
676 | if (lseek64(fd, offset, 0)< 0LL) | |
677 | return 3; | |
678 | ||
679 | if (write(fd, super, sizeof(*super)) != sizeof(*super)) | |
680 | return 4; | |
681 | ||
14263cf1 NB |
682 | if (super->state & (1<<MD_SB_BITMAP_PRESENT)) { |
683 | struct bitmap_super_s * bm = (struct bitmap_super_s*)(super+1); | |
684 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) | |
b550887f N |
685 | if (write(fd, bm, ROUND_UP(sizeof(*bm),4096)) != |
686 | ROUND_UP(sizeof(*bm),4096)) | |
9fca7d62 | 687 | return 5; |
14263cf1 NB |
688 | } |
689 | ||
570c0542 | 690 | fsync(fd); |
4b1ac34b NB |
691 | return 0; |
692 | } | |
693 | ||
111d01fc NB |
694 | #ifndef MDASSEMBLE |
695 | static int write_init_super0(struct supertype *st) | |
4b1ac34b | 696 | { |
3da92f27 | 697 | mdp_super_t *sb = st->sb; |
111d01fc NB |
698 | int rv = 0; |
699 | struct devinfo *di; | |
4b1ac34b | 700 | |
111d01fc | 701 | for (di = st->info ; di && ! rv ; di = di->next) { |
4b1ac34b | 702 | |
111d01fc NB |
703 | if (di->disk.state == 1) |
704 | continue; | |
a0c8a17f NB |
705 | if (di->fd == -1) |
706 | continue; | |
111d01fc NB |
707 | Kill(di->devname, 0, 1, 1); |
708 | Kill(di->devname, 0, 1, 1); | |
8d75b7fc | 709 | |
111d01fc | 710 | sb->disks[di->disk.number].state &= ~(1<<MD_DISK_FAULTY); |
55935d51 | 711 | |
111d01fc NB |
712 | sb->this_disk = sb->disks[di->disk.number]; |
713 | sb->sb_csum = calc_sb0_csum(sb); | |
714 | rv = store_super0(st, di->fd); | |
55935d51 | 715 | |
111d01fc NB |
716 | if (rv == 0 && (sb->state & (1<<MD_SB_BITMAP_PRESENT))) |
717 | rv = st->ss->write_bitmap(st, di->fd); | |
718 | ||
719 | if (rv) | |
720 | fprintf(stderr, | |
721 | Name ": failed to write superblock to %s\n", | |
722 | di->devname); | |
723 | close(di->fd); | |
724 | di->fd = -1; | |
725 | } | |
4b1ac34b NB |
726 | return rv; |
727 | } | |
111d01fc | 728 | #endif |
4b1ac34b | 729 | |
64557c33 | 730 | static int compare_super0(struct supertype *st, struct supertype *tst) |
4b1ac34b NB |
731 | { |
732 | /* | |
733 | * return: | |
734 | * 0 same, or first was empty, and second was copied | |
735 | * 1 second had wrong number | |
736 | * 2 wrong uuid | |
737 | * 3 wrong other info | |
738 | */ | |
64557c33 NB |
739 | mdp_super_t *first = st->sb; |
740 | mdp_super_t *second = tst->sb; | |
4b1ac34b | 741 | int uuid1[4], uuid2[4]; |
64557c33 | 742 | |
4b1ac34b NB |
743 | if (second->md_magic != MD_SB_MAGIC) |
744 | return 1; | |
745 | if (!first) { | |
b550887f N |
746 | if (posix_memalign((void**)&first, 4096, |
747 | MD_SB_BYTES + | |
748 | ROUND_UP(sizeof(struct bitmap_super_s), 4096)) != 0) { | |
3d2c4fc7 DW |
749 | fprintf(stderr, Name |
750 | ": %s could not allocate superblock\n", __func__); | |
751 | return 1; | |
752 | } | |
14263cf1 | 753 | memcpy(first, second, MD_SB_BYTES + sizeof(struct bitmap_super_s)); |
64557c33 | 754 | st->sb = first; |
4b1ac34b NB |
755 | return 0; |
756 | } | |
757 | ||
3da92f27 NB |
758 | uuid_from_super0(st, uuid1); |
759 | uuid_from_super0(tst, uuid2); | |
f277ce36 | 760 | if (!same_uuid(uuid1, uuid2, 0)) |
4b1ac34b NB |
761 | return 2; |
762 | if (first->major_version != second->major_version || | |
763 | first->minor_version != second->minor_version || | |
764 | first->patch_version != second->patch_version || | |
765 | first->gvalid_words != second->gvalid_words || | |
766 | first->ctime != second->ctime || | |
767 | first->level != second->level || | |
768 | first->size != second->size || | |
769 | first->raid_disks != second->raid_disks ) | |
770 | return 3; | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
775 | ||
3da92f27 NB |
776 | static void free_super0(struct supertype *st); |
777 | ||
778 | static int load_super0(struct supertype *st, int fd, char *devname) | |
4b1ac34b NB |
779 | { |
780 | /* try to read in the superblock | |
781 | * Return: | |
782 | * 0 on success | |
783 | * 1 on cannot get superblock | |
784 | * 2 on superblock meaningless | |
785 | */ | |
4b1ac34b NB |
786 | unsigned long long dsize; |
787 | unsigned long long offset; | |
788 | mdp_super_t *super; | |
14263cf1 NB |
789 | int uuid[4]; |
790 | struct bitmap_super_s *bsb; | |
aba69144 | 791 | |
3da92f27 NB |
792 | free_super0(st); |
793 | ||
f7e7067b NB |
794 | if (st->subarray[0]) |
795 | return 1; | |
796 | ||
beae1dfe NB |
797 | if (!get_dev_size(fd, devname, &dsize)) |
798 | return 1; | |
4b1ac34b | 799 | |
eb6dae98 | 800 | if (dsize < MD_RESERVED_SECTORS*512) { |
4b1ac34b | 801 | if (devname) |
f8409e54 NB |
802 | fprintf(stderr, Name |
803 | ": %s is too small for md: size is %llu sectors.\n", | |
804 | devname, dsize); | |
4b1ac34b NB |
805 | return 1; |
806 | } | |
353632d9 | 807 | |
4b1ac34b NB |
808 | offset = MD_NEW_SIZE_SECTORS(dsize>>9); |
809 | ||
810 | offset *= 512; | |
811 | ||
812 | ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */ | |
813 | ||
814 | if (lseek64(fd, offset, 0)< 0LL) { | |
815 | if (devname) | |
816 | fprintf(stderr, Name ": Cannot seek to superblock on %s: %s\n", | |
817 | devname, strerror(errno)); | |
818 | return 1; | |
819 | } | |
820 | ||
b550887f N |
821 | if (posix_memalign((void**)&super, 4096, |
822 | MD_SB_BYTES + | |
823 | ROUND_UP(sizeof(bitmap_super_t), 4096)) != 0) { | |
3d2c4fc7 DW |
824 | fprintf(stderr, Name |
825 | ": %s could not allocate superblock\n", __func__); | |
826 | return 1; | |
827 | } | |
4b1ac34b NB |
828 | |
829 | if (read(fd, super, sizeof(*super)) != MD_SB_BYTES) { | |
830 | if (devname) | |
831 | fprintf(stderr, Name ": Cannot read superblock on %s\n", | |
832 | devname); | |
833 | free(super); | |
834 | return 1; | |
835 | } | |
836 | ||
586ed405 NB |
837 | if (st->ss && st->minor_version == 9) |
838 | super0_swap_endian(super); | |
839 | ||
4b1ac34b NB |
840 | if (super->md_magic != MD_SB_MAGIC) { |
841 | if (devname) | |
842 | fprintf(stderr, Name ": No super block found on %s (Expected magic %08x, got %08x)\n", | |
843 | devname, MD_SB_MAGIC, super->md_magic); | |
844 | free(super); | |
845 | return 2; | |
846 | } | |
847 | ||
848 | if (super->major_version != 0) { | |
849 | if (devname) | |
850 | fprintf(stderr, Name ": Cannot interpret superblock on %s - version is %d\n", | |
851 | devname, super->major_version); | |
852 | free(super); | |
853 | return 2; | |
854 | } | |
64557c33 | 855 | st->sb = super; |
3da92f27 | 856 | |
82d9eba6 NB |
857 | if (st->ss == NULL) { |
858 | st->ss = &super0; | |
5f98d3cb | 859 | st->minor_version = super->minor_version; |
ea329559 | 860 | st->max_devs = MD_SB_DISKS; |
111d01fc | 861 | st->info = NULL; |
82d9eba6 NB |
862 | } |
863 | ||
14263cf1 NB |
864 | /* Now check on the bitmap superblock */ |
865 | if ((super->state & (1<<MD_SB_BITMAP_PRESENT)) == 0) | |
866 | return 0; | |
867 | /* Read the bitmap superblock and make sure it looks | |
868 | * valid. If it doesn't clear the bit. An --assemble --force | |
869 | * should get that written out. | |
870 | */ | |
b550887f N |
871 | if (read(fd, super+1, ROUND_UP(sizeof(struct bitmap_super_s),4096)) |
872 | != ROUND_UP(sizeof(struct bitmap_super_s),4096)) | |
14263cf1 NB |
873 | goto no_bitmap; |
874 | ||
3da92f27 | 875 | uuid_from_super0(st, uuid); |
14263cf1 NB |
876 | bsb = (struct bitmap_super_s *)(super+1); |
877 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || | |
878 | memcmp(bsb->uuid, uuid, 16) != 0) | |
879 | goto no_bitmap; | |
880 | return 0; | |
881 | ||
882 | no_bitmap: | |
883 | super->state &= ~(1<<MD_SB_BITMAP_PRESENT); | |
884 | ||
4b1ac34b NB |
885 | return 0; |
886 | } | |
f9ce90ba | 887 | |
82d9eba6 | 888 | static struct supertype *match_metadata_desc0(char *arg) |
f9ce90ba | 889 | { |
82d9eba6 NB |
890 | struct supertype *st = malloc(sizeof(*st)); |
891 | if (!st) return st; | |
892 | ||
ef609477 | 893 | memset(st, 0, sizeof(*st)); |
82d9eba6 | 894 | st->ss = &super0; |
111d01fc | 895 | st->info = NULL; |
82d9eba6 | 896 | st->minor_version = 90; |
ea329559 | 897 | st->max_devs = MD_SB_DISKS; |
64557c33 | 898 | st->sb = NULL; |
9b2a22d3 N |
899 | /* we sometimes get 00.90 */ |
900 | while (arg[0] == '0' && arg[1] == '0') | |
901 | arg++; | |
f9ce90ba NB |
902 | if (strcmp(arg, "0") == 0 || |
903 | strcmp(arg, "0.90") == 0 || | |
294d6f45 NB |
904 | strcmp(arg, "default") == 0 || |
905 | strcmp(arg, "") == 0 /* no metadata */ | |
f9ce90ba | 906 | ) |
82d9eba6 NB |
907 | return st; |
908 | ||
56f8add2 NB |
909 | st->minor_version = 91; /* reshape in progress */ |
910 | if (strcmp(arg, "0.91") == 0) /* For dup_super support */ | |
911 | return st; | |
912 | ||
586ed405 | 913 | st->minor_version = 9; /* flag for 'byte-swapped' */ |
ff1f6545 NB |
914 | if (strcmp(arg, "0.swap")==0 || |
915 | strcmp(arg, "0.9") == 0) /* For dup_super support */ | |
586ed405 NB |
916 | return st; |
917 | ||
82d9eba6 NB |
918 | free(st); |
919 | return NULL; | |
920 | } | |
921 | ||
1bf4e2d9 | 922 | static __u64 avail_size0(struct supertype *st, __u64 devsize) |
82d9eba6 | 923 | { |
eb6dae98 | 924 | if (devsize < MD_RESERVED_SECTORS) |
82d9eba6 NB |
925 | return 0ULL; |
926 | return MD_NEW_SIZE_SECTORS(devsize); | |
f9ce90ba NB |
927 | } |
928 | ||
3da92f27 | 929 | static int add_internal_bitmap0(struct supertype *st, int *chunkp, |
199171a2 NB |
930 | int delay, int write_behind, |
931 | unsigned long long size, int may_change, | |
932 | int major) | |
55935d51 NB |
933 | { |
934 | /* | |
935 | * The bitmap comes immediately after the superblock and must be 60K in size | |
936 | * at most. The default size is between 30K and 60K | |
937 | * | |
8686f3ed | 938 | * size is in sectors, chunk is in bytes !!! |
55935d51 | 939 | */ |
1bf4e2d9 | 940 | unsigned long long bits; |
55935d51 NB |
941 | unsigned long long max_bits = 60*1024*8; |
942 | unsigned long long min_chunk; | |
199171a2 | 943 | int chunk = *chunkp; |
3da92f27 | 944 | mdp_super_t *sb = st->sb; |
55935d51 NB |
945 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MD_SB_BYTES); |
946 | ||
353632d9 | 947 | |
f277ce36 | 948 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ |
8686f3ed | 949 | bits = (size * 512) / min_chunk + 1; |
55935d51 NB |
950 | while (bits > max_bits) { |
951 | min_chunk *= 2; | |
952 | bits = (bits+1)/2; | |
953 | } | |
954 | if (chunk == UnSet) | |
955 | chunk = min_chunk; | |
956 | else if (chunk < min_chunk) | |
957 | return 0; /* chunk size too small */ | |
958 | ||
959 | sb->state |= (1<<MD_SB_BITMAP_PRESENT); | |
960 | ||
29e766a5 | 961 | memset(bms, 0, sizeof(*bms)); |
dfd4d8ee | 962 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 963 | bms->version = __cpu_to_le32(major); |
3da92f27 | 964 | uuid_from_super0(st, (int*)bms->uuid); |
dfd4d8ee NB |
965 | bms->chunksize = __cpu_to_le32(chunk); |
966 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 967 | bms->sync_size = __cpu_to_le64(size); |
dfd4d8ee | 968 | bms->write_behind = __cpu_to_le32(write_behind); |
199171a2 | 969 | *chunkp = chunk; |
55935d51 NB |
970 | return 1; |
971 | } | |
353632d9 | 972 | |
55935d51 | 973 | |
ec9688ca | 974 | static void locate_bitmap0(struct supertype *st, int fd) |
55935d51 NB |
975 | { |
976 | unsigned long long dsize; | |
55935d51 | 977 | unsigned long long offset; |
55935d51 | 978 | |
beae1dfe NB |
979 | if (!get_dev_size(fd, NULL, &dsize)) |
980 | return; | |
981 | ||
eb6dae98 | 982 | if (dsize < MD_RESERVED_SECTORS*512) |
55935d51 | 983 | return; |
353632d9 | 984 | |
55935d51 NB |
985 | offset = MD_NEW_SIZE_SECTORS(dsize>>9); |
986 | ||
987 | offset *= 512; | |
988 | ||
989 | offset += MD_SB_BYTES; | |
990 | ||
991 | lseek64(fd, offset, 0); | |
992 | } | |
993 | ||
ec9688ca | 994 | static int write_bitmap0(struct supertype *st, int fd) |
8d75b7fc | 995 | { |
8d75b7fc NB |
996 | unsigned long long dsize; |
997 | unsigned long long offset; | |
3da92f27 | 998 | mdp_super_t *sb = st->sb; |
aba69144 | 999 | |
8d75b7fc NB |
1000 | int rv = 0; |
1001 | ||
1002 | int towrite, n; | |
b550887f N |
1003 | char abuf[4096+4096]; |
1004 | char *buf = (char*)(((long)(abuf+4096))&~4095L); | |
8d75b7fc | 1005 | |
beae1dfe NB |
1006 | if (!get_dev_size(fd, NULL, &dsize)) |
1007 | return 1; | |
1008 | ||
8d75b7fc | 1009 | |
eb6dae98 NB |
1010 | if (dsize < MD_RESERVED_SECTORS*512) |
1011 | return -1; | |
353632d9 | 1012 | |
8d75b7fc NB |
1013 | offset = MD_NEW_SIZE_SECTORS(dsize>>9); |
1014 | ||
1015 | offset *= 512; | |
1016 | ||
1017 | if (lseek64(fd, offset + 4096, 0)< 0LL) | |
1018 | return 3; | |
1019 | ||
6416d527 NB |
1020 | memset(buf, 0xff, 4096); |
1021 | memcpy(buf, ((char*)sb)+MD_SB_BYTES, sizeof(bitmap_super_t)); | |
1022 | towrite = 64*1024; | |
8d75b7fc NB |
1023 | while (towrite > 0) { |
1024 | n = towrite; | |
6416d527 NB |
1025 | if (n > 4096) |
1026 | n = 4096; | |
8d75b7fc NB |
1027 | n = write(fd, buf, n); |
1028 | if (n > 0) | |
1029 | towrite -= n; | |
1030 | else | |
1031 | break; | |
6416d527 | 1032 | memset(buf, 0xff, 4096); |
8d75b7fc | 1033 | } |
dfd4d8ee | 1034 | fsync(fd); |
8d75b7fc NB |
1035 | if (towrite) |
1036 | rv = -2; | |
1037 | ||
1038 | return rv; | |
1039 | } | |
55935d51 | 1040 | |
3da92f27 | 1041 | static void free_super0(struct supertype *st) |
df37ffc0 | 1042 | { |
3da92f27 NB |
1043 | if (st->sb) |
1044 | free(st->sb); | |
1045 | st->sb = NULL; | |
df37ffc0 NB |
1046 | } |
1047 | ||
0e600426 | 1048 | #ifndef MDASSEMBLE |
17f25ca6 NB |
1049 | static int validate_geometry0(struct supertype *st, int level, |
1050 | int layout, int raiddisks, | |
1051 | int chunk, unsigned long long size, | |
2c514b71 NB |
1052 | char *subdev, unsigned long long *freesize, |
1053 | int verbose) | |
17f25ca6 NB |
1054 | { |
1055 | unsigned long long ldsize; | |
1056 | int fd; | |
1057 | ||
1058 | if (level == LEVEL_CONTAINER) | |
1059 | return 0; | |
1060 | if (raiddisks > MD_SB_DISKS) | |
1061 | return 0; | |
e46273eb | 1062 | if (size > (0x7fffffffULL<<9)) |
17f25ca6 NB |
1063 | return 0; |
1064 | if (!subdev) | |
1065 | return 1; | |
1066 | ||
1067 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
1068 | if (fd < 0) { | |
2c514b71 NB |
1069 | if (verbose) |
1070 | fprintf(stderr, Name ": super0.90 cannot open %s: %s\n", | |
1071 | subdev, strerror(errno)); | |
17f25ca6 NB |
1072 | return 0; |
1073 | } | |
2c514b71 | 1074 | |
17f25ca6 NB |
1075 | if (!get_dev_size(fd, subdev, &ldsize)) { |
1076 | close(fd); | |
1077 | return 0; | |
1078 | } | |
1079 | close(fd); | |
1080 | ||
1081 | if (ldsize < MD_RESERVED_SECTORS * 512) | |
1082 | return 0; | |
e46273eb | 1083 | if (size > (0x7fffffffULL<<9)) |
17f25ca6 NB |
1084 | return 0; |
1085 | *freesize = MD_NEW_SIZE_SECTORS(ldsize >> 9); | |
1086 | return 1; | |
1087 | } | |
0e600426 | 1088 | #endif /* MDASSEMBLE */ |
17f25ca6 | 1089 | |
f9ce90ba | 1090 | struct superswitch super0 = { |
c7654afc | 1091 | #ifndef MDASSEMBLE |
f9ce90ba NB |
1092 | .examine_super = examine_super0, |
1093 | .brief_examine_super = brief_examine_super0, | |
0d726f17 | 1094 | .export_examine_super = export_examine_super0, |
f9ce90ba NB |
1095 | .detail_super = detail_super0, |
1096 | .brief_detail_super = brief_detail_super0, | |
111d01fc | 1097 | .write_init_super = write_init_super0, |
0e600426 N |
1098 | .validate_geometry = validate_geometry0, |
1099 | .add_to_super = add_to_super0, | |
c7654afc | 1100 | #endif |
83b6208e | 1101 | .match_home = match_home0, |
f9ce90ba NB |
1102 | .uuid_from_super = uuid_from_super0, |
1103 | .getinfo_super = getinfo_super0, | |
1104 | .update_super = update_super0, | |
f9ce90ba | 1105 | .init_super = init_super0, |
f9ce90ba | 1106 | .store_super = store_super0, |
f9ce90ba NB |
1107 | .compare_super = compare_super0, |
1108 | .load_super = load_super0, | |
1109 | .match_metadata_desc = match_metadata_desc0, | |
82d9eba6 | 1110 | .avail_size = avail_size0, |
55935d51 NB |
1111 | .add_internal_bitmap = add_internal_bitmap0, |
1112 | .locate_bitmap = locate_bitmap0, | |
8d75b7fc | 1113 | .write_bitmap = write_bitmap0, |
df37ffc0 | 1114 | .free_super = free_super0, |
4cce4069 | 1115 | .name = "0.90", |
f9ce90ba | 1116 | }; |