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Commit | Line | Data |
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82d9eba6 NB |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4f589ad0 | 4 | * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de> |
82d9eba6 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 | |
22 | * Email: <neilb@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | */ | |
29 | ||
30 | #include "mdadm.h" | |
82d9eba6 NB |
31 | /* |
32 | * The version-1 superblock : | |
33 | * All numeric fields are little-endian. | |
34 | * | |
35 | * total size: 256 bytes plus 2 per device. | |
36 | * 1K allows 384 devices. | |
37 | */ | |
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 */ | |
44 | ||
45 | __u8 set_uuid[16]; /* user-space generated. */ | |
46 | char set_name[32]; /* set and interpreted by user-space */ | |
47 | ||
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 */ | |
52 | ||
53 | __u32 chunksize; /* in 512byte sectors */ | |
54 | __u32 raid_disks; | |
34163fc7 NB |
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. | |
58 | */ | |
b674b5b8 NB |
59 | |
60 | /* These are only valid with feature bit '4' */ | |
b674b5b8 | 61 | __u32 new_level; /* new level we are reshaping to */ |
ac957baa | 62 | __u64 reshape_position; /* next address in array-space for reshape */ |
b674b5b8 NB |
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 */ | |
82d9eba6 NB |
67 | |
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 */ | |
dfd4d8ee NB |
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 */ | |
82d9eba6 NB |
79 | |
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 */ | |
87 | ||
88 | /* device state information. Indexed by dev_number. | |
89 | * 2 bytes per device | |
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. | |
93 | */ | |
94 | __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ | |
95 | }; | |
96 | ||
bee8ec56 NB |
97 | struct misc_dev_info { |
98 | __u64 device_size; | |
99 | }; | |
100 | ||
d2cd3ffc NB |
101 | /* feature_map bits */ |
102 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
103 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
104 | * must be honoured | |
105 | */ | |
b674b5b8 | 106 | #define MD_FEATURE_RESHAPE_ACTIVE 4 |
d2cd3ffc | 107 | |
b674b5b8 | 108 | #define MD_FEATURE_ALL (1|2|4) |
d2cd3ffc | 109 | |
570c0542 | 110 | #ifndef offsetof |
067db4df | 111 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) |
570c0542 | 112 | #endif |
82d9eba6 NB |
113 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
114 | { | |
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; | |
119 | int i; | |
120 | ||
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"); | |
126 | } | |
127 | ||
128 | disk_csum = sb->sb_csum; | |
129 | sb->sb_csum = 0; | |
130 | newcsum = 0; | |
722966c6 PC |
131 | for (i=0; size>=4; size -= 4 ) { |
132 | newcsum += __le32_to_cpu(*isuper); | |
133 | isuper++; | |
134 | } | |
82d9eba6 NB |
135 | |
136 | if (size == 2) | |
137 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
138 | ||
139 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
140 | sb->sb_csum = disk_csum; | |
83205b64 | 141 | return __cpu_to_le32(csum); |
82d9eba6 NB |
142 | } |
143 | ||
c7654afc | 144 | #ifndef MDASSEMBLE |
3da92f27 | 145 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 146 | { |
3da92f27 | 147 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
148 | time_t atime; |
149 | int d; | |
6fbba4c9 | 150 | int faulty; |
82d9eba6 NB |
151 | int i; |
152 | char *c; | |
a1cbd7d0 | 153 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 154 | int layout; |
a17a3de3 | 155 | unsigned long long sb_offset; |
82d9eba6 NB |
156 | |
157 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
158 | printf(" Version : 1"); |
159 | sb_offset = __le64_to_cpu(sb->super_offset); | |
160 | if (sb_offset <= 4) | |
161 | printf(".1\n"); | |
162 | else if (sb_offset <= 8) | |
163 | printf(".2\n"); | |
164 | else | |
165 | printf(".0\n"); | |
91eedefc | 166 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
167 | printf(" Array UUID : "); |
168 | for (i=0; i<16; i++) { | |
82d9eba6 | 169 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 170 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
171 | } |
172 | printf("\n"); | |
a1cbd7d0 NB |
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); | |
178 | printf("\n"); | |
82d9eba6 NB |
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)); | |
184 | printf("\n"); | |
5cda0964 | 185 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
186 | (unsigned long long)__le64_to_cpu(sb->data_size), |
187 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
b674b5b8 NB |
188 | if (__le32_to_cpu(sb->level) >= 0) { |
189 | int ddsks=0; | |
190 | switch(__le32_to_cpu(sb->level)) { | |
191 | case 1: ddsks=1;break; | |
192 | case 4: | |
83205b64 NB |
193 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
194 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
195 | case 10: | |
196 | layout = __le32_to_cpu(sb->layout); | |
197 | ddsks = __le32_to_cpu(sb->raid_disks) | |
198 | / (layout&255) / ((layout>>8)&255); | |
b674b5b8 NB |
199 | } |
200 | if (ddsks) | |
83205b64 | 201 | printf(" Array Size : %llu%s\n", |
c1c05f7f | 202 | ddsks*(unsigned long long)__le64_to_cpu(sb->size), |
83205b64 | 203 | human_size(ddsks*__le64_to_cpu(sb->size)<<9)); |
b674b5b8 | 204 | if (sb->size != sb->data_size) |
5cda0964 | 205 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
206 | (unsigned long long)__le64_to_cpu(sb->size), |
207 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 208 | } |
82d9eba6 | 209 | if (sb->data_offset) |
199171a2 NB |
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)); | |
d2cd3ffc NB |
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)); | |
a3fd117c | 216 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
217 | printf(" Device UUID : "); |
218 | for (i=0; i<16; i++) { | |
82d9eba6 | 219 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 220 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
221 | } |
222 | printf("\n"); | |
b674b5b8 | 223 | printf("\n"); |
91eedefc NB |
224 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
225 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 226 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
8fac0577 | 227 | } |
b674b5b8 | 228 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 229 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
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)); | |
237 | else | |
238 | printf(" (%d->%d)\n", __le32_to_cpu(sb->raid_disks), | |
239 | __le32_to_cpu(sb->raid_disks)+__le32_to_cpu(sb->delta_disks)); | |
240 | } | |
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-"); | |
244 | } | |
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-"); | |
249 | } | |
250 | if (__le32_to_cpu(sb->level) == 10) { | |
b578481c | 251 | printf(" New Layout : near=%d, %s=%d\n", |
b674b5b8 | 252 | __le32_to_cpu(sb->new_layout)&255, |
b578481c | 253 | (__le32_to_cpu(sb->new_layout)&0x10000)?"offset":"far", |
b674b5b8 NB |
254 | (__le32_to_cpu(sb->new_layout)>>8)&255); |
255 | } | |
256 | } | |
257 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
258 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
259 | printf("\n"); | |
260 | } | |
dfd4d8ee NB |
261 | if (sb->devflags) { |
262 | printf(" Flags :"); | |
34163fc7 | 263 | if (sb->devflags & WriteMostly1) |
dfd4d8ee NB |
264 | printf(" write-mostly"); |
265 | printf("\n"); | |
266 | } | |
82d9eba6 NB |
267 | |
268 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
269 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
270 | ||
271 | if (calc_sb_1_csum(sb) == sb->sb_csum) | |
272 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
273 | else | |
274 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
275 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 276 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
277 | printf("\n"); |
278 | if (__le32_to_cpu(sb->level) == 5) { | |
279 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
280 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
281 | } | |
265e0f17 NB |
282 | if (__le32_to_cpu(sb->level) == 10) { |
283 | int lo = __le32_to_cpu(sb->layout); | |
b578481c NB |
284 | printf(" Layout : near=%d, %s=%d\n", |
285 | lo&255, | |
286 | (lo&0x10000)?"offset":"far", | |
287 | (lo>>8)&255); | |
265e0f17 | 288 | } |
82d9eba6 NB |
289 | switch(__le32_to_cpu(sb->level)) { |
290 | case 0: | |
291 | case 4: | |
292 | case 5: | |
d2cd3ffc NB |
293 | case 6: |
294 | case 10: | |
b674b5b8 | 295 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
296 | break; |
297 | case -1: | |
b674b5b8 | 298 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
299 | break; |
300 | default: break; | |
301 | } | |
302 | printf("\n"); | |
c3684618 NB |
303 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
304 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
305 | if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff) | |
306 | break; | |
307 | for (d=0; d < i; d++) { | |
308 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
309 | if (d) printf(", "); | |
310 | if (role == 0xffff) printf("empty"); | |
311 | else if(role == 0xfffe) printf("failed"); | |
312 | else printf("%d", role); | |
313 | } | |
314 | printf(")\n"); | |
82d9eba6 NB |
315 | printf(" Array State : "); |
316 | for (d=0; d<__le32_to_cpu(sb->raid_disks); d++) { | |
317 | int cnt = 0; | |
318 | int me = 0; | |
319 | int i; | |
320 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { | |
321 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
322 | if (role == d) { | |
323 | if (i == __le32_to_cpu(sb->dev_number)) | |
324 | me = 1; | |
325 | cnt++; | |
326 | } | |
327 | } | |
328 | if (cnt > 1) printf("?"); | |
329 | else if (cnt == 1 && me) printf("U"); | |
330 | else if (cnt == 1) printf("u"); | |
331 | else printf ("_"); | |
332 | } | |
6fbba4c9 | 333 | faulty = 0; |
82d9eba6 NB |
334 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
335 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
6fbba4c9 NB |
336 | if (role == 0xFFFE) |
337 | faulty++; | |
82d9eba6 | 338 | } |
82d9eba6 NB |
339 | if (faulty) printf(" %d failed", faulty); |
340 | printf("\n"); | |
341 | } | |
342 | ||
343 | ||
3da92f27 | 344 | static void brief_examine_super1(struct supertype *st) |
82d9eba6 | 345 | { |
3da92f27 | 346 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 347 | int i; |
a17a3de3 | 348 | unsigned long long sb_offset; |
2998bc01 | 349 | char *nm; |
b015e6c2 | 350 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
351 | |
352 | nm = strchr(sb->set_name, ':'); | |
353 | if (nm) | |
354 | nm++; | |
355 | else if (sb->set_name[0]) | |
356 | nm = sb->set_name; | |
357 | else | |
358 | nm = "??"; | |
82d9eba6 | 359 | |
a17a3de3 DL |
360 | printf("ARRAY /dev/md/%s level=%s ", nm, c?c:"-unknown-"); |
361 | sb_offset = __le64_to_cpu(sb->super_offset); | |
362 | if (sb_offset <= 4) | |
363 | printf("metadata=1.1 "); | |
364 | else if (sb_offset <= 8) | |
365 | printf("metadata=1.2 "); | |
366 | else | |
367 | printf("metadata=1.0 "); | |
368 | printf("num-devices=%d UUID=", __le32_to_cpu(sb->raid_disks)); | |
82d9eba6 | 369 | for (i=0; i<16; i++) { |
82d9eba6 | 370 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 371 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 372 | } |
947fd4dd NB |
373 | if (sb->set_name[0]) |
374 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
375 | printf("\n"); |
376 | } | |
377 | ||
0d726f17 KS |
378 | static void export_examine_super1(struct supertype *st) |
379 | { | |
380 | struct mdp_superblock_1 *sb = st->sb; | |
381 | int i; | |
382 | int len = 32; | |
383 | ||
384 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
385 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
386 | for (i=0; i<32; i++) | |
387 | if (sb->set_name[i] == '\n' || | |
388 | sb->set_name[i] == '\0') { | |
389 | len = i; | |
390 | break; | |
391 | } | |
392 | if (len) | |
393 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
394 | printf("MD_UUID="); | |
395 | for (i=0; i<16; i++) { | |
396 | if ((i&3)==0 && i != 0) printf(":"); | |
397 | printf("%02x", sb->set_uuid[i]); | |
398 | } | |
399 | printf("\n"); | |
400 | printf("MD_UPDATE_TIME=%llu\n", | |
401 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
402 | printf("MD_DEV_UUID="); | |
403 | for (i=0; i<16; i++) { | |
404 | if ((i&3)==0 && i != 0) printf(":"); | |
405 | printf("%02x", sb->device_uuid[i]); | |
406 | } | |
407 | printf("\n"); | |
408 | printf("MD_EVENTS=%llu\n", | |
409 | (unsigned long long)__le64_to_cpu(sb->events)); | |
410 | } | |
411 | ||
3da92f27 | 412 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 413 | { |
3da92f27 | 414 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 415 | int i; |
b6750aa8 | 416 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 417 | |
b6750aa8 NB |
418 | printf(" Name : %.32s", sb->set_name); |
419 | if (l > 0 && l < 32 && | |
420 | sb->set_name[l] == ':' && | |
421 | strncmp(sb->set_name, homehost, l) == 0) | |
422 | printf(" (local to host %s)", homehost); | |
423 | printf("\n UUID : "); | |
82d9eba6 | 424 | for (i=0; i<16; i++) { |
82d9eba6 | 425 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 426 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 427 | } |
570c0542 | 428 | printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
429 | } |
430 | ||
3da92f27 | 431 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 432 | { |
3da92f27 | 433 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
434 | int i; |
435 | ||
947fd4dd NB |
436 | if (sb->set_name[0]) |
437 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
438 | printf(" UUID="); |
439 | for (i=0; i<16; i++) { | |
82d9eba6 | 440 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 441 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
442 | } |
443 | } | |
444 | ||
0d726f17 | 445 | static void export_detail_super1(struct supertype *st) |
54bad364 | 446 | { |
3da92f27 | 447 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
448 | int i; |
449 | int len = 32; | |
450 | ||
451 | for (i=0; i<32; i++) | |
452 | if (sb->set_name[i] == '\n' || | |
453 | sb->set_name[i] == '\0') { | |
454 | len = i; | |
455 | break; | |
456 | } | |
457 | if (len) | |
458 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
459 | printf("MD_UUID="); | |
460 | for (i=0; i<16; i++) { | |
461 | if ((i&3)==0 && i != 0) printf(":"); | |
462 | printf("%02x", sb->set_uuid[i]); | |
463 | } | |
464 | printf("\n"); | |
465 | } | |
466 | ||
c7654afc NB |
467 | #endif |
468 | ||
3da92f27 | 469 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 470 | { |
3da92f27 | 471 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
472 | int l = homehost ? strlen(homehost) : 0; |
473 | ||
474 | return (l > 0 && l < 32 && | |
475 | sb->set_name[l] == ':' && | |
476 | strncmp(sb->set_name, homehost, l) == 0); | |
477 | } | |
478 | ||
3da92f27 | 479 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 480 | { |
3da92f27 | 481 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
482 | char *cuuid = (char*)uuid; |
483 | int i; | |
484 | for (i=0; i<16; i++) | |
485 | cuuid[i] = super->set_uuid[i]; | |
486 | } | |
487 | ||
3da92f27 | 488 | static void getinfo_super1(struct supertype *st, struct mdinfo *info) |
82d9eba6 | 489 | { |
3da92f27 | 490 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
491 | int working = 0; |
492 | int i; | |
493 | int role; | |
494 | ||
495 | info->array.major_version = 1; | |
b8ac1967 | 496 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
497 | info->array.patch_version = 0; |
498 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
499 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 500 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
501 | info->array.md_minor = -1; |
502 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 503 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 504 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c NB |
505 | info->array.state = |
506 | (__le64_to_cpu(sb->resync_offset) >= __le64_to_cpu(sb->size)) | |
507 | ? 1 : 0; | |
353632d9 NB |
508 | |
509 | info->data_offset = __le64_to_cpu(sb->data_offset); | |
510 | info->component_size = __le64_to_cpu(sb->size); | |
82d9eba6 NB |
511 | |
512 | info->disk.major = 0; | |
513 | info->disk.minor = 0; | |
fbf8a0b7 | 514 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 NB |
515 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
516 | __le32_to_cpu(sb->max_dev) > 512) | |
517 | role = 0xfffe; | |
518 | else | |
519 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
520 | ||
521 | info->disk.raid_disk = -1; | |
522 | switch(role) { | |
523 | case 0xFFFF: | |
524 | info->disk.state = 2; /* spare: ACTIVE, not sync, not faulty */ | |
525 | break; | |
526 | case 0xFFFE: | |
527 | info->disk.state = 1; /* faulty */ | |
528 | break; | |
529 | default: | |
530 | info->disk.state = 6; /* active and in sync */ | |
531 | info->disk.raid_disk = role; | |
532 | } | |
533 | info->events = __le64_to_cpu(sb->events); | |
1522c538 | 534 | sprintf(info->text_version, "1.%d", st->minor_version); |
82d9eba6 NB |
535 | |
536 | memcpy(info->uuid, sb->set_uuid, 16); | |
537 | ||
31317663 NB |
538 | strncpy(info->name, sb->set_name, 32); |
539 | info->name[32] = 0; | |
947fd4dd | 540 | |
353632d9 NB |
541 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
542 | info->reshape_active = 1; | |
543 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); | |
544 | info->new_level = __le32_to_cpu(sb->new_level); | |
545 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
546 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 547 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
353632d9 NB |
548 | } else |
549 | info->reshape_active = 0; | |
550 | ||
82d9eba6 NB |
551 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
552 | role = __le16_to_cpu(sb->dev_roles[i]); | |
fbf8a0b7 | 553 | if (/*role == 0xFFFF || */role < info->array.raid_disks) |
82d9eba6 NB |
554 | working++; |
555 | } | |
556 | ||
557 | info->array.working_disks = working; | |
558 | } | |
559 | ||
68c7d6d7 | 560 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 561 | char *update, |
e5eac01f NB |
562 | char *devname, int verbose, |
563 | int uuid_set, char *homehost) | |
82d9eba6 | 564 | { |
c4d831e1 NB |
565 | /* NOTE: for 'assemble' and 'force' we need to return non-zero if any change was made. |
566 | * For others, the return value is ignored. | |
567 | */ | |
82d9eba6 | 568 | int rv = 0; |
3da92f27 | 569 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 570 | |
67a8c82d NB |
571 | if (strcmp(update, "force-one")==0) { |
572 | /* Not enough devices for a working array, | |
573 | * so bring this one up-to-date | |
574 | */ | |
c4d831e1 NB |
575 | if (sb->events != __cpu_to_le64(info->events)) |
576 | rv = 1; | |
6d3d5804 | 577 | sb->events = __cpu_to_le64(info->events); |
67a8c82d NB |
578 | } |
579 | if (strcmp(update, "force-array")==0) { | |
580 | /* Degraded array and 'force' requests to | |
581 | * maybe need to mark it 'clean'. | |
582 | */ | |
82d9eba6 NB |
583 | switch(__le32_to_cpu(sb->level)) { |
584 | case 5: case 4: case 6: | |
585 | /* need to force clean */ | |
c4d831e1 NB |
586 | if (sb->resync_offset != ~0ULL) |
587 | rv = 1; | |
82d9eba6 NB |
588 | sb->resync_offset = ~0ULL; |
589 | } | |
590 | } | |
591 | if (strcmp(update, "assemble")==0) { | |
592 | int d = info->disk.number; | |
593 | int want; | |
594 | if (info->disk.state == 6) | |
595 | want = __cpu_to_le32(info->disk.raid_disk); | |
596 | else | |
597 | want = 0xFFFF; | |
598 | if (sb->dev_roles[d] != want) { | |
599 | sb->dev_roles[d] = want; | |
600 | rv = 1; | |
601 | } | |
602 | } | |
f752781f NB |
603 | if (strcmp(update, "linear-grow-new") == 0) { |
604 | int i; | |
605 | int rfd; | |
606 | int max = __le32_to_cpu(sb->max_dev); | |
607 | ||
608 | for (i=0 ; i < max ; i++) | |
609 | if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe) | |
610 | break; | |
611 | sb->dev_number = __cpu_to_le32(i); | |
612 | info->disk.number = i; | |
613 | if (max >= __le32_to_cpu(sb->max_dev)) | |
614 | sb->max_dev = __cpu_to_le32(max+1); | |
615 | ||
616 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
617 | read(rfd, sb->device_uuid, 16) != 16) { | |
618 | *(__u32*)(sb->device_uuid) = random(); | |
619 | *(__u32*)(sb->device_uuid+4) = random(); | |
620 | *(__u32*)(sb->device_uuid+8) = random(); | |
621 | *(__u32*)(sb->device_uuid+12) = random(); | |
622 | } | |
623 | ||
624 | sb->dev_roles[i] = | |
625 | __cpu_to_le16(info->disk.raid_disk); | |
626 | } | |
627 | if (strcmp(update, "linear-grow-update") == 0) { | |
82d9eba6 | 628 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
629 | sb->dev_roles[info->disk.number] = |
630 | __cpu_to_le16(info->disk.raid_disk); | |
82d9eba6 NB |
631 | } |
632 | if (strcmp(update, "resync") == 0) { | |
633 | /* make sure resync happens */ | |
434b7755 | 634 | sb->resync_offset = 0ULL; |
82d9eba6 | 635 | } |
14263cf1 | 636 | if (strcmp(update, "uuid") == 0) { |
350f29f9 | 637 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 638 | |
14263cf1 NB |
639 | if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) { |
640 | struct bitmap_super_s *bm; | |
3da92f27 | 641 | bm = (struct bitmap_super_s*)(st->sb+1024); |
bf4fb153 | 642 | memcpy(bm->uuid, sb->set_uuid, 16); |
14263cf1 NB |
643 | } |
644 | } | |
0237e0ca NB |
645 | if (strcmp(update, "homehost") == 0 && |
646 | homehost) { | |
647 | char *c; | |
648 | update = "name"; | |
649 | c = strchr(sb->set_name, ':'); | |
650 | if (c) | |
651 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
652 | else | |
653 | strncpy(info->name, sb->set_name, 32); | |
26a0b8fd | 654 | info->name[32] = 0; |
0237e0ca | 655 | } |
c4f12c13 NB |
656 | if (strcmp(update, "name") == 0) { |
657 | if (info->name[0] == 0) | |
658 | sprintf(info->name, "%d", info->array.md_minor); | |
659 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
660 | if (homehost && | |
661 | strchr(info->name, ':') == NULL && | |
662 | strlen(homehost)+1+strlen(info->name) < 32) { | |
663 | strcpy(sb->set_name, homehost); | |
664 | strcat(sb->set_name, ":"); | |
665 | strcat(sb->set_name, info->name); | |
666 | } else | |
667 | strcpy(sb->set_name, info->name); | |
668 | } | |
bee8ec56 NB |
669 | if (strcmp(update, "devicesize") == 0 && |
670 | __le64_to_cpu(sb->super_offset) < | |
671 | __le64_to_cpu(sb->data_offset)) { | |
672 | /* set data_size to device size less data_offset */ | |
673 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
6416d527 | 674 | (st->sb + 1024 + 512); |
eb9199fb NB |
675 | printf("Size was %llu\n", (unsigned long long) |
676 | __le64_to_cpu(sb->data_size)); | |
bee8ec56 NB |
677 | sb->data_size = __cpu_to_le64( |
678 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
eb9199fb NB |
679 | printf("Size is %llu\n", (unsigned long long) |
680 | __le64_to_cpu(sb->data_size)); | |
bee8ec56 | 681 | } |
353632d9 NB |
682 | if (strcmp(update, "_reshape_progress")==0) |
683 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
82d9eba6 NB |
684 | |
685 | sb->sb_csum = calc_sb_1_csum(sb); | |
686 | return rv; | |
687 | } | |
688 | ||
3da92f27 | 689 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
3d3dd91e | 690 | unsigned long long size, char *name, char *homehost, int *uuid) |
82d9eba6 | 691 | { |
6416d527 | 692 | struct mdp_superblock_1 *sb; |
82d9eba6 | 693 | int spares; |
34163fc7 | 694 | int rfd; |
05697ec1 | 695 | char defname[10]; |
6416d527 NB |
696 | |
697 | posix_memalign((void**)&sb, 512, (1024 + 512 + | |
698 | sizeof(struct misc_dev_info))); | |
82d9eba6 NB |
699 | memset(sb, 0, 1024); |
700 | ||
64557c33 | 701 | st->sb = sb; |
ba7eb04f | 702 | if (info == NULL) { |
82d9eba6 NB |
703 | /* zeroing superblock */ |
704 | return 0; | |
05697ec1 | 705 | } |
82d9eba6 NB |
706 | |
707 | spares = info->working_disks - info->active_disks; | |
708 | if (info->raid_disks + spares > 384) { | |
709 | fprintf(stderr, Name ": too many devices requested: %d+%d > %d\n", | |
710 | info->raid_disks , spares, 384); | |
711 | return 0; | |
712 | } | |
713 | ||
82d9eba6 NB |
714 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
715 | sb->major_version = __cpu_to_le32(1); | |
716 | sb->feature_map = 0; | |
717 | sb->pad0 = 0; | |
34163fc7 | 718 | |
350f29f9 NB |
719 | if (uuid) |
720 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
721 | else { | |
3d3dd91e NB |
722 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
723 | read(rfd, sb->set_uuid, 16) != 16) { | |
724 | *(__u32*)(sb->set_uuid) = random(); | |
725 | *(__u32*)(sb->set_uuid+4) = random(); | |
726 | *(__u32*)(sb->set_uuid+8) = random(); | |
727 | *(__u32*)(sb->set_uuid+12) = random(); | |
728 | } | |
729 | if (rfd >= 0) close(rfd); | |
34163fc7 | 730 | } |
82d9eba6 | 731 | |
05697ec1 NB |
732 | if (name == NULL || *name == 0) { |
733 | sprintf(defname, "%d", info->md_minor); | |
734 | name = defname; | |
735 | } | |
947fd4dd | 736 | memset(sb->set_name, 0, 32); |
05697ec1 NB |
737 | if (homehost && |
738 | strchr(name, ':')== NULL && | |
739 | strlen(homehost)+1+strlen(name) < 32) { | |
740 | strcpy(sb->set_name, homehost); | |
741 | strcat(sb->set_name, ":"); | |
742 | strcat(sb->set_name, name); | |
743 | } else | |
744 | strcpy(sb->set_name, name); | |
82d9eba6 NB |
745 | |
746 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
747 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 748 | sb->layout = __cpu_to_le32(info->layout); |
5dd497ee | 749 | sb->size = __cpu_to_le64(size*2ULL); |
82d9eba6 NB |
750 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
751 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
752 | ||
753 | sb->data_offset = __cpu_to_le64(0); | |
754 | sb->data_size = __cpu_to_le64(0); | |
755 | sb->super_offset = __cpu_to_le64(0); | |
756 | sb->recovery_offset = __cpu_to_le64(0); | |
757 | ||
758 | sb->utime = sb->ctime; | |
759 | sb->events = __cpu_to_le64(1); | |
34321279 | 760 | if (info->state & (1<<MD_SB_CLEAN)) |
82d9eba6 NB |
761 | sb->resync_offset = ~0ULL; |
762 | else | |
763 | sb->resync_offset = 0; | |
34163fc7 | 764 | sb->max_dev = __cpu_to_le32((1024- sizeof(struct mdp_superblock_1))/ |
82d9eba6 NB |
765 | sizeof(sb->dev_roles[0])); |
766 | memset(sb->pad3, 0, sizeof(sb->pad3)); | |
767 | ||
768 | memset(sb->dev_roles, 0xff, 1024 - sizeof(struct mdp_superblock_1)); | |
769 | ||
82d9eba6 NB |
770 | return 1; |
771 | } | |
772 | ||
111d01fc NB |
773 | struct devinfo { |
774 | int fd; | |
775 | char *devname; | |
776 | mdu_disk_info_t disk; | |
777 | struct devinfo *next; | |
778 | }; | |
82d9eba6 | 779 | /* Add a device to the superblock being created */ |
111d01fc NB |
780 | static void add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
781 | int fd, char *devname) | |
82d9eba6 | 782 | { |
3da92f27 | 783 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 784 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc NB |
785 | struct devinfo *di, **dip; |
786 | ||
dfd4d8ee | 787 | if ((dk->state & 6) == 6) /* active, sync */ |
82d9eba6 | 788 | *rp = __cpu_to_le16(dk->raid_disk); |
412ca2e5 | 789 | else if ((dk->state & ~2) == 0) /* active or idle -> spare */ |
82d9eba6 | 790 | *rp = 0xffff; |
34163fc7 | 791 | else |
82d9eba6 | 792 | *rp = 0xfffe; |
111d01fc | 793 | |
d2ca6449 NB |
794 | sb->dev_number = __cpu_to_le32(dk->number); |
795 | sb->sb_csum = calc_sb_1_csum(sb); | |
796 | ||
111d01fc NB |
797 | dip = (struct devinfo **)&st->info; |
798 | while (*dip) | |
799 | dip = &(*dip)->next; | |
800 | di = malloc(sizeof(struct devinfo)); | |
801 | di->fd = fd; | |
802 | di->devname = devname; | |
803 | di->disk = *dk; | |
804 | di->next = NULL; | |
805 | *dip = di; | |
82d9eba6 NB |
806 | } |
807 | ||
3da92f27 | 808 | static void locate_bitmap1(struct supertype *st, int fd); |
14263cf1 | 809 | |
3da92f27 | 810 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 811 | { |
3da92f27 | 812 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 813 | unsigned long long sb_offset; |
82d9eba6 | 814 | int sbsize; |
5dd497ee | 815 | unsigned long long dsize; |
96395475 | 816 | |
beae1dfe NB |
817 | if (!get_dev_size(fd, NULL, &dsize)) |
818 | return 1; | |
819 | ||
820 | dsize >>= 9; | |
96395475 | 821 | |
5dd497ee | 822 | if (dsize < 24) |
96395475 NB |
823 | return 2; |
824 | ||
825 | /* | |
826 | * Calculate the position of the superblock. | |
827 | * It is always aligned to a 4K boundary and | |
828 | * depending on minor_version, it can be: | |
829 | * 0: At least 8K, but less than 12K, from end of device | |
830 | * 1: At start of device | |
831 | * 2: 4K from start of device. | |
832 | */ | |
833 | switch(st->minor_version) { | |
834 | case 0: | |
5dd497ee | 835 | sb_offset = dsize; |
96395475 NB |
836 | sb_offset -= 8*2; |
837 | sb_offset &= ~(4*2-1); | |
838 | break; | |
839 | case 1: | |
6fbba4c9 | 840 | sb_offset = 0; |
96395475 NB |
841 | break; |
842 | case 2: | |
843 | sb_offset = 4*2; | |
844 | break; | |
845 | default: | |
846 | return -EINVAL; | |
847 | } | |
848 | ||
82d9eba6 | 849 | |
34163fc7 | 850 | |
6fbba4c9 NB |
851 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
852 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 NB |
853 | ) { |
854 | fprintf(stderr, Name ": internal error - sb_offset is wrong\n"); | |
855 | abort(); | |
856 | } | |
82d9eba6 | 857 | |
6fbba4c9 | 858 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
859 | return 3; |
860 | ||
861 | sbsize = sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev); | |
6416d527 | 862 | sbsize = (sbsize+511)&(~511UL); |
82d9eba6 NB |
863 | |
864 | if (write(fd, sb, sbsize) != sbsize) | |
865 | return 4; | |
866 | ||
14263cf1 NB |
867 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
868 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
41a3b72a | 869 | (((char*)sb)+1024); |
14263cf1 | 870 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
3da92f27 | 871 | locate_bitmap1(st, fd); |
6416d527 NB |
872 | if (write(fd, bm, ROUND_UP(sizeof(*bm),512)) != |
873 | ROUND_UP(sizeof(*bm),512)) | |
9fca7d62 | 874 | return 5; |
14263cf1 NB |
875 | } |
876 | } | |
570c0542 | 877 | fsync(fd); |
82d9eba6 NB |
878 | return 0; |
879 | } | |
880 | ||
3da92f27 | 881 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 882 | |
2fb749d1 NB |
883 | static unsigned long choose_bm_space(unsigned long devsize) |
884 | { | |
885 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
886 | * if bigger than 200Gig, save 128k | |
887 | */ | |
69646c14 | 888 | if (devsize < 64*2) return 0; |
2fb749d1 NB |
889 | if (devsize - 64*2 >= 200*1024*1024*2) |
890 | return 128*2; | |
891 | if (devsize - 4*2 > 8*1024*1024*2) | |
892 | return 64*2; | |
893 | return 4*2; | |
894 | } | |
895 | ||
111d01fc NB |
896 | #ifndef MDASSEMBLE |
897 | static int write_init_super1(struct supertype *st) | |
82d9eba6 | 898 | { |
3da92f27 NB |
899 | struct mdp_superblock_1 *sb = st->sb; |
900 | struct supertype refst; | |
dfe47e00 | 901 | int rfd; |
111d01fc | 902 | int rv = 0; |
199171a2 | 903 | int bm_space; |
111d01fc | 904 | struct devinfo *di; |
8fac0577 | 905 | unsigned long long dsize, array_size; |
82d9eba6 NB |
906 | long long sb_offset; |
907 | ||
111d01fc NB |
908 | for (di = st->info; di && ! rv ; di = di->next) { |
909 | if (di->disk.state == 1) | |
910 | continue; | |
a0c8a17f NB |
911 | if (di->fd < 0) |
912 | continue; | |
82d9eba6 | 913 | |
111d01fc NB |
914 | Kill(di->devname, 0, 1, 1); |
915 | Kill(di->devname, 0, 1, 1); | |
82d9eba6 | 916 | |
111d01fc NB |
917 | sb->dev_number = __cpu_to_le32(di->disk.number); |
918 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
919 | sb->devflags |= __cpu_to_le32(WriteMostly1); | |
892debc8 | 920 | |
111d01fc NB |
921 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
922 | read(rfd, sb->device_uuid, 16) != 16) { | |
923 | *(__u32*)(sb->device_uuid) = random(); | |
924 | *(__u32*)(sb->device_uuid+4) = random(); | |
925 | *(__u32*)(sb->device_uuid+8) = random(); | |
926 | *(__u32*)(sb->device_uuid+12) = random(); | |
927 | } | |
928 | if (rfd >= 0) close(rfd); | |
929 | sb->events = 0; | |
930 | ||
931 | refst =*st; | |
932 | refst.sb = NULL; | |
933 | if (load_super1(&refst, di->fd, NULL)==0) { | |
934 | struct mdp_superblock_1 *refsb = refst.sb; | |
935 | ||
936 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
937 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
938 | /* same array, so preserve events and | |
939 | * dev_number */ | |
940 | sb->events = refsb->events; | |
941 | /* bugs in 2.6.17 and earlier mean the | |
942 | * dev_number chosen in Manage must be preserved | |
943 | */ | |
944 | if (get_linux_version() >= 2006018) | |
945 | sb->dev_number = refsb->dev_number; | |
946 | } | |
947 | free(refsb); | |
892debc8 | 948 | } |
34163fc7 | 949 | |
111d01fc NB |
950 | if (!get_dev_size(di->fd, NULL, &dsize)) |
951 | return 1; | |
952 | dsize >>= 9; | |
82d9eba6 | 953 | |
111d01fc NB |
954 | if (dsize < 24) { |
955 | close(di->fd); | |
956 | return 2; | |
957 | } | |
82d9eba6 NB |
958 | |
959 | ||
111d01fc NB |
960 | /* |
961 | * Calculate the position of the superblock. | |
962 | * It is always aligned to a 4K boundary and | |
963 | * depending on minor_version, it can be: | |
964 | * 0: At least 8K, but less than 12K, from end of device | |
965 | * 1: At start of device | |
966 | * 2: 4K from start of device. | |
967 | * Depending on the array size, we might leave extra space | |
968 | * for a bitmap. | |
969 | */ | |
970 | array_size = __le64_to_cpu(sb->size); | |
971 | /* work out how much space we left for a bitmap */ | |
972 | bm_space = choose_bm_space(array_size); | |
973 | ||
974 | switch(st->minor_version) { | |
975 | case 0: | |
976 | sb_offset = dsize; | |
977 | sb_offset -= 8*2; | |
978 | sb_offset &= ~(4*2-1); | |
979 | sb->super_offset = __cpu_to_le64(sb_offset); | |
980 | sb->data_offset = __cpu_to_le64(0); | |
519561f7 NB |
981 | if (sb_offset - bm_space < array_size) |
982 | bm_space = sb_offset - array_size; | |
111d01fc NB |
983 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
984 | break; | |
985 | case 1: | |
986 | sb->super_offset = __cpu_to_le64(0); | |
987 | if (4*2 + bm_space + __le64_to_cpu(sb->size) > dsize) | |
988 | bm_space = dsize - __le64_to_cpu(sb->size) -4*2; | |
989 | sb->data_offset = __cpu_to_le64(bm_space + 4*2); | |
990 | sb->data_size = __cpu_to_le64(dsize - bm_space - 4*2); | |
991 | break; | |
992 | case 2: | |
993 | sb_offset = 4*2; | |
994 | sb->super_offset = __cpu_to_le64(4*2); | |
995 | if (4*2 + 4*2 + bm_space + __le64_to_cpu(sb->size) | |
996 | > dsize) | |
997 | bm_space = dsize - __le64_to_cpu(sb->size) | |
998 | - 4*2 - 4*2; | |
999 | sb->data_offset = __cpu_to_le64(4*2 + 4*2 + bm_space); | |
1000 | sb->data_size = __cpu_to_le64(dsize - 4*2 - 4*2 | |
1001 | - bm_space ); | |
1002 | break; | |
1003 | default: | |
1004 | return -EINVAL; | |
1005 | } | |
82d9eba6 NB |
1006 | |
1007 | ||
111d01fc NB |
1008 | sb->sb_csum = calc_sb_1_csum(sb); |
1009 | rv = store_super1(st, di->fd); | |
1010 | if (rv) | |
1011 | fprintf(stderr, | |
1012 | Name ": failed to write superblock to %s\n", | |
1013 | di->devname); | |
34163fc7 | 1014 | |
111d01fc NB |
1015 | if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1)) |
1016 | rv = st->ss->write_bitmap(st, di->fd); | |
1017 | close(di->fd); | |
1018 | di->fd = -1; | |
1019 | } | |
82d9eba6 NB |
1020 | return rv; |
1021 | } | |
111d01fc | 1022 | #endif |
82d9eba6 | 1023 | |
64557c33 | 1024 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
1025 | { |
1026 | /* | |
1027 | * return: | |
1028 | * 0 same, or first was empty, and second was copied | |
1029 | * 1 second had wrong number | |
1030 | * 2 wrong uuid | |
1031 | * 3 wrong other info | |
1032 | */ | |
64557c33 NB |
1033 | struct mdp_superblock_1 *first = st->sb; |
1034 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
1035 | |
1036 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
1037 | return 1; | |
1038 | if (second->major_version != __cpu_to_le32(1)) | |
1039 | return 1; | |
1040 | ||
1041 | if (!first) { | |
6416d527 NB |
1042 | posix_memalign((void**)&first, 512, |
1043 | 1024 + 512 + | |
bee8ec56 | 1044 | sizeof(struct misc_dev_info)); |
6416d527 | 1045 | memcpy(first, second, 1024 + 512 + |
bee8ec56 | 1046 | sizeof(struct misc_dev_info)); |
64557c33 | 1047 | st->sb = first; |
82d9eba6 NB |
1048 | return 0; |
1049 | } | |
1050 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
1051 | return 2; | |
1052 | ||
1053 | if (first->ctime != second->ctime || | |
1054 | first->level != second->level || | |
1055 | first->layout != second->layout || | |
1056 | first->size != second->size || | |
1057 | first->chunksize != second->chunksize || | |
1058 | first->raid_disks != second->raid_disks) | |
1059 | return 3; | |
1060 | return 0; | |
1061 | } | |
1062 | ||
3da92f27 NB |
1063 | static void free_super1(struct supertype *st); |
1064 | ||
1065 | static int load_super1(struct supertype *st, int fd, char *devname) | |
82d9eba6 | 1066 | { |
5dd497ee | 1067 | unsigned long long dsize; |
82d9eba6 NB |
1068 | unsigned long long sb_offset; |
1069 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
1070 | int uuid[4]; |
1071 | struct bitmap_super_s *bsb; | |
bee8ec56 | 1072 | struct misc_dev_info *misc; |
82d9eba6 | 1073 | |
3da92f27 | 1074 | free_super1(st); |
82d9eba6 | 1075 | |
f7e7067b NB |
1076 | if (st->subarray[0]) |
1077 | return 1; | |
1078 | ||
a17a3de3 | 1079 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 1080 | int bestvers = -1; |
23dc1ae8 | 1081 | struct supertype tst; |
570c0542 NB |
1082 | __u64 bestctime = 0; |
1083 | /* guess... choose latest ctime */ | |
ef609477 | 1084 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
1085 | tst.ss = &super1; |
1086 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
1087 | switch(load_super1(&tst, fd, devname)) { |
1088 | case 0: super = tst.sb; | |
570c0542 NB |
1089 | if (bestvers == -1 || |
1090 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 1091 | bestvers = tst.minor_version; |
570c0542 NB |
1092 | bestctime = __le64_to_cpu(super->ctime); |
1093 | } | |
1094 | free(super); | |
3da92f27 | 1095 | tst.sb = NULL; |
570c0542 | 1096 | break; |
23dc1ae8 | 1097 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
1098 | case 2: break; /* bad, try next */ |
1099 | } | |
1100 | } | |
570c0542 NB |
1101 | if (bestvers != -1) { |
1102 | int rv; | |
23dc1ae8 NB |
1103 | tst.minor_version = bestvers; |
1104 | tst.ss = &super1; | |
1105 | tst.max_devs = 384; | |
3da92f27 | 1106 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
1107 | if (rv == 0) |
1108 | *st = tst; | |
570c0542 NB |
1109 | return rv; |
1110 | } | |
82d9eba6 NB |
1111 | return 2; |
1112 | } | |
beae1dfe NB |
1113 | if (!get_dev_size(fd, devname, &dsize)) |
1114 | return 1; | |
1115 | dsize >>= 9; | |
82d9eba6 | 1116 | |
5dd497ee | 1117 | if (dsize < 24) { |
82d9eba6 | 1118 | if (devname) |
5dd497ee NB |
1119 | fprintf(stderr, Name ": %s is too small for md: size is %llu sectors.\n", |
1120 | devname, dsize); | |
82d9eba6 NB |
1121 | return 1; |
1122 | } | |
1123 | ||
1124 | /* | |
1125 | * Calculate the position of the superblock. | |
1126 | * It is always aligned to a 4K boundary and | |
14263cf1 | 1127 | * depending on minor_version, it can be: |
82d9eba6 NB |
1128 | * 0: At least 8K, but less than 12K, from end of device |
1129 | * 1: At start of device | |
1130 | * 2: 4K from start of device. | |
1131 | */ | |
1132 | switch(st->minor_version) { | |
1133 | case 0: | |
5dd497ee | 1134 | sb_offset = dsize; |
82d9eba6 NB |
1135 | sb_offset -= 8*2; |
1136 | sb_offset &= ~(4*2-1); | |
1137 | break; | |
1138 | case 1: | |
1139 | sb_offset = 0; | |
1140 | break; | |
1141 | case 2: | |
1142 | sb_offset = 4*2; | |
1143 | break; | |
1144 | default: | |
1145 | return -EINVAL; | |
1146 | } | |
1147 | ||
1148 | ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */ | |
1149 | ||
1150 | ||
1151 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { | |
1152 | if (devname) | |
1153 | fprintf(stderr, Name ": Cannot seek to superblock on %s: %s\n", | |
1154 | devname, strerror(errno)); | |
1155 | return 1; | |
1156 | } | |
1157 | ||
6416d527 NB |
1158 | posix_memalign((void**)&super, 512, |
1159 | 1024 + 512 + | |
bee8ec56 | 1160 | sizeof(struct misc_dev_info)); |
82d9eba6 NB |
1161 | |
1162 | if (read(fd, super, 1024) != 1024) { | |
1163 | if (devname) | |
1164 | fprintf(stderr, Name ": Cannot read superblock on %s\n", | |
1165 | devname); | |
1166 | free(super); | |
1167 | return 1; | |
1168 | } | |
1169 | ||
1170 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
1171 | if (devname) | |
1172 | fprintf(stderr, Name ": No super block found on %s (Expected magic %08x, got %08x)\n", | |
1173 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); | |
1174 | free(super); | |
1175 | return 2; | |
1176 | } | |
1177 | ||
1178 | if (__le32_to_cpu(super->major_version) != 1) { | |
1179 | if (devname) | |
1180 | fprintf(stderr, Name ": Cannot interpret superblock on %s - version is %d\n", | |
1181 | devname, __le32_to_cpu(super->major_version)); | |
1182 | free(super); | |
1183 | return 2; | |
1184 | } | |
1185 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
1186 | if (devname) | |
1187 | fprintf(stderr, Name ": No superblock found on %s (super_offset is wrong)\n", | |
1188 | devname); | |
1189 | free(super); | |
1190 | return 2; | |
1191 | } | |
64557c33 | 1192 | st->sb = super; |
14263cf1 | 1193 | |
bee8ec56 NB |
1194 | bsb = (struct bitmap_super_s *)(((char*)super)+1024); |
1195 | ||
6416d527 | 1196 | misc = (struct misc_dev_info*) (((char*)super)+1024+512); |
bee8ec56 NB |
1197 | misc->device_size = dsize; |
1198 | ||
14263cf1 NB |
1199 | /* Now check on the bitmap superblock */ |
1200 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
1201 | return 0; | |
1202 | /* Read the bitmap superblock and make sure it looks | |
1203 | * valid. If it doesn't clear the bit. An --assemble --force | |
1204 | * should get that written out. | |
1205 | */ | |
3da92f27 | 1206 | locate_bitmap1(st, fd); |
6416d527 NB |
1207 | if (read(fd, ((char*)super)+1024, 512) |
1208 | != 512) | |
14263cf1 NB |
1209 | goto no_bitmap; |
1210 | ||
3da92f27 | 1211 | uuid_from_super1(st, uuid); |
14263cf1 NB |
1212 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
1213 | memcmp(bsb->uuid, uuid, 16) != 0) | |
1214 | goto no_bitmap; | |
1215 | return 0; | |
1216 | ||
1217 | no_bitmap: | |
1218 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) & ~1); | |
82d9eba6 NB |
1219 | return 0; |
1220 | } | |
1221 | ||
1222 | ||
1223 | static struct supertype *match_metadata_desc1(char *arg) | |
1224 | { | |
1225 | struct supertype *st = malloc(sizeof(*st)); | |
1226 | if (!st) return st; | |
1227 | ||
ef609477 | 1228 | memset(st, 0, sizeof(*st)); |
82d9eba6 | 1229 | st->ss = &super1; |
ea329559 | 1230 | st->max_devs = 384; |
64557c33 | 1231 | st->sb = NULL; |
a17a3de3 | 1232 | if (strcmp(arg, "1.0") == 0) { |
82d9eba6 NB |
1233 | st->minor_version = 0; |
1234 | return st; | |
1235 | } | |
1236 | if (strcmp(arg, "1.1") == 0) { | |
1237 | st->minor_version = 1; | |
1238 | return st; | |
1239 | } | |
1240 | if (strcmp(arg, "1.2") == 0) { | |
1241 | st->minor_version = 2; | |
1242 | return st; | |
1243 | } | |
a17a3de3 | 1244 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 1245 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
1246 | st->minor_version = -1; |
1247 | return st; | |
1248 | } | |
82d9eba6 NB |
1249 | |
1250 | free(st); | |
1251 | return NULL; | |
1252 | } | |
1253 | ||
34163fc7 NB |
1254 | /* find available size on device with this devsize, using |
1255 | * superblock type st, and reserving 'reserve' sectors for | |
1256 | * a possible bitmap | |
1257 | */ | |
1bf4e2d9 | 1258 | static __u64 avail_size1(struct supertype *st, __u64 devsize) |
82d9eba6 NB |
1259 | { |
1260 | if (devsize < 24) | |
1261 | return 0; | |
1262 | ||
2fb749d1 | 1263 | devsize -= choose_bm_space(devsize); |
21e92547 | 1264 | |
34163fc7 | 1265 | switch(st->minor_version) { |
a17a3de3 DL |
1266 | case -1: /* no specified. Now time to set default */ |
1267 | st->minor_version = 0; | |
1268 | /* FALL THROUGH */ | |
34163fc7 | 1269 | case 0: |
1bf4e2d9 NB |
1270 | /* at end */ |
1271 | return ((devsize - 8*2 ) & ~(4*2-1)); | |
34163fc7 | 1272 | case 1: |
1bf4e2d9 NB |
1273 | /* at start, 4K for superblock and possible bitmap */ |
1274 | return devsize - 4*2; | |
34163fc7 | 1275 | case 2: |
1bf4e2d9 NB |
1276 | /* 4k from start, 4K for superblock and possible bitmap */ |
1277 | return devsize - (4+4)*2; | |
34163fc7 NB |
1278 | } |
1279 | return 0; | |
1280 | } | |
1281 | ||
1bf4e2d9 | 1282 | static int |
3da92f27 | 1283 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
1284 | int *chunkp, int delay, int write_behind, |
1285 | unsigned long long size, | |
21e92547 | 1286 | int may_change, int major) |
34163fc7 NB |
1287 | { |
1288 | /* | |
1bf4e2d9 NB |
1289 | * If not may_change, then this is a 'Grow', and the bitmap |
1290 | * must fit after the superblock. | |
1291 | * If may_change, then this is create, and we can put the bitmap | |
1292 | * before the superblock if we like, or may move the start. | |
199171a2 NB |
1293 | * If !may_change, the bitmap MUST live at offset of 1K, until |
1294 | * we get a sysfs interface. | |
34163fc7 | 1295 | * |
f9c25f1d | 1296 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
1297 | */ |
1298 | ||
1bf4e2d9 | 1299 | unsigned long long bits; |
199171a2 | 1300 | unsigned long long max_bits; |
34163fc7 | 1301 | unsigned long long min_chunk; |
199171a2 NB |
1302 | long offset; |
1303 | int chunk = *chunkp; | |
37dfc3d6 | 1304 | int room = 0; |
3da92f27 | 1305 | struct mdp_superblock_1 *sb = st->sb; |
34163fc7 NB |
1306 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + 1024); |
1307 | ||
199171a2 NB |
1308 | switch(st->minor_version) { |
1309 | case 0: | |
1310 | /* either 3K after the superblock, or some amount of space | |
1311 | * before. | |
1312 | */ | |
1313 | if (may_change) { | |
1314 | /* We are creating array, so we *know* how much room has | |
1315 | * been left. | |
1316 | */ | |
1317 | offset = 0; | |
2fb749d1 NB |
1318 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
1319 | if (room == 4*2) { | |
1320 | /* make it 3K after the superblock */ | |
199171a2 NB |
1321 | room = 3*2; |
1322 | offset = 2; | |
1323 | } | |
1324 | } else { | |
1325 | room = __le64_to_cpu(sb->super_offset) | |
1326 | - __le64_to_cpu(sb->data_offset) | |
1327 | - __le64_to_cpu(sb->data_size); | |
1328 | /* remove '1 ||' when we can set offset via sysfs */ | |
1329 | if (1 || (room < 3*2 && | |
1330 | __le32_to_cpu(sb->max_dev) <= 384)) { | |
1331 | room = 3*2; | |
1332 | offset = 1*2; | |
1333 | } else { | |
1334 | offset = 0; /* means movable offset */ | |
1335 | } | |
1336 | } | |
1337 | break; | |
1338 | case 1: | |
1339 | case 2: /* between superblock and data */ | |
1340 | if (may_change) { | |
1341 | offset = 4*2; | |
2fb749d1 | 1342 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
199171a2 NB |
1343 | } else { |
1344 | room = __le64_to_cpu(sb->data_offset) | |
1345 | - __le64_to_cpu(sb->super_offset); | |
1346 | if (1 || __le32_to_cpu(sb->max_dev) <= 384) { | |
1347 | room -= 2; | |
1348 | offset = 2; | |
1349 | } else { | |
1350 | room -= 4*2; | |
1351 | offset = 4*2; | |
1352 | } | |
1353 | } | |
1354 | break; | |
ae491d1e NB |
1355 | default: |
1356 | return 0; | |
199171a2 | 1357 | } |
1bf4e2d9 | 1358 | |
199171a2 NB |
1359 | if (chunk == UnSet && room > 128*2) |
1360 | /* Limit to 128K of bitmap when chunk size not requested */ | |
1361 | room = 128*2; | |
1bf4e2d9 | 1362 | |
199171a2 | 1363 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
1364 | |
1365 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 1366 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
1367 | while (bits > max_bits) { |
1368 | min_chunk *= 2; | |
1369 | bits = (bits+1)/2; | |
1370 | } | |
1371 | if (chunk == UnSet) | |
1372 | chunk = min_chunk; | |
1373 | else if (chunk < min_chunk) | |
1374 | return 0; /* chunk size too small */ | |
21e92547 NB |
1375 | if (chunk == 0) /* rounding problem */ |
1376 | return 0; | |
34163fc7 | 1377 | |
199171a2 NB |
1378 | if (offset == 0) { |
1379 | bits = (size*512) / chunk + 1; | |
1380 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +511)/512; | |
1381 | offset = -room; | |
1382 | } | |
1383 | ||
1384 | sb->bitmap_offset = __cpu_to_le32(offset); | |
34163fc7 NB |
1385 | |
1386 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | 1); | |
29e766a5 | 1387 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 1388 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 1389 | bms->version = __cpu_to_le32(major); |
3da92f27 | 1390 | uuid_from_super1(st, (int*)bms->uuid); |
34163fc7 NB |
1391 | bms->chunksize = __cpu_to_le32(chunk); |
1392 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 1393 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 NB |
1394 | bms->write_behind = __cpu_to_le32(write_behind); |
1395 | ||
199171a2 | 1396 | *chunkp = chunk; |
34163fc7 NB |
1397 | return 1; |
1398 | } | |
1399 | ||
1400 | ||
3da92f27 | 1401 | static void locate_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1402 | { |
34163fc7 | 1403 | unsigned long long offset; |
1e0d770c NB |
1404 | struct mdp_superblock_1 *sb; |
1405 | int mustfree = 0; | |
34163fc7 | 1406 | |
3da92f27 NB |
1407 | if (!st->sb) { |
1408 | if (st->ss->load_super(st, fd, NULL)) | |
f6d75de8 | 1409 | return; /* no error I hope... */ |
1e0d770c NB |
1410 | mustfree = 1; |
1411 | } | |
3da92f27 | 1412 | sb = st->sb; |
e478dc86 | 1413 | |
1bf4e2d9 | 1414 | offset = __le64_to_cpu(sb->super_offset); |
68754bd1 | 1415 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset); |
1e0d770c | 1416 | if (mustfree) |
f6d75de8 | 1417 | free(sb); |
1bf4e2d9 | 1418 | lseek64(fd, offset<<9, 0); |
34163fc7 NB |
1419 | } |
1420 | ||
3da92f27 | 1421 | static int write_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1422 | { |
3da92f27 | 1423 | struct mdp_superblock_1 *sb = st->sb; |
1bf4e2d9 | 1424 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+1024); |
34163fc7 NB |
1425 | int rv = 0; |
1426 | ||
1427 | int towrite, n; | |
6416d527 NB |
1428 | char abuf[4096+512]; |
1429 | char *buf = (char*)(((long)(abuf+512))&~511UL); | |
34163fc7 | 1430 | |
3da92f27 | 1431 | locate_bitmap1(st, fd); |
34163fc7 | 1432 | |
6416d527 NB |
1433 | memset(buf, 0xff, 4096); |
1434 | memcpy(buf, ((char*)sb)+1024, sizeof(bitmap_super_t)); | |
1435 | ||
1bf4e2d9 NB |
1436 | towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9); |
1437 | towrite = (towrite+7) >> 3; /* bits to bytes */ | |
6416d527 NB |
1438 | towrite += sizeof(bitmap_super_t); |
1439 | towrite = ROUND_UP(towrite, 512); | |
34163fc7 NB |
1440 | while (towrite > 0) { |
1441 | n = towrite; | |
6416d527 NB |
1442 | if (n > 4096) |
1443 | n = 4096; | |
34163fc7 NB |
1444 | n = write(fd, buf, n); |
1445 | if (n > 0) | |
1446 | towrite -= n; | |
1447 | else | |
1448 | break; | |
6416d527 | 1449 | memset(buf, 0xff, 4096); |
34163fc7 NB |
1450 | } |
1451 | fsync(fd); | |
1452 | if (towrite) | |
1453 | rv = -2; | |
1454 | ||
1455 | return rv; | |
82d9eba6 NB |
1456 | } |
1457 | ||
3da92f27 | 1458 | static void free_super1(struct supertype *st) |
df37ffc0 | 1459 | { |
3da92f27 NB |
1460 | if (st->sb) |
1461 | free(st->sb); | |
1462 | st->sb = NULL; | |
df37ffc0 NB |
1463 | } |
1464 | ||
17f25ca6 NB |
1465 | static int validate_geometry1(struct supertype *st, int level, |
1466 | int layout, int raiddisks, | |
1467 | int chunk, unsigned long long size, | |
2c514b71 NB |
1468 | char *subdev, unsigned long long *freesize, |
1469 | int verbose) | |
17f25ca6 NB |
1470 | { |
1471 | unsigned long long ldsize; | |
1472 | int fd; | |
1473 | ||
1474 | if (level == LEVEL_CONTAINER) | |
1475 | return 0; | |
1476 | if (!subdev) | |
1477 | return 1; | |
1478 | ||
1479 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
1480 | if (fd < 0) { | |
2c514b71 NB |
1481 | if (verbose) |
1482 | fprintf(stderr, Name ": super1.x cannot open %s: %s\n", | |
1483 | subdev, strerror(errno)); | |
17f25ca6 NB |
1484 | return 0; |
1485 | } | |
2c514b71 | 1486 | |
17f25ca6 NB |
1487 | if (!get_dev_size(fd, subdev, &ldsize)) { |
1488 | close(fd); | |
1489 | return 0; | |
1490 | } | |
1491 | close(fd); | |
1492 | ||
1493 | *freesize = avail_size1(st, ldsize >> 9); | |
1494 | return 1; | |
1495 | } | |
1496 | ||
82d9eba6 | 1497 | struct superswitch super1 = { |
c7654afc | 1498 | #ifndef MDASSEMBLE |
82d9eba6 NB |
1499 | .examine_super = examine_super1, |
1500 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 1501 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
1502 | .detail_super = detail_super1, |
1503 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 1504 | .export_detail_super = export_detail_super1, |
111d01fc | 1505 | .write_init_super = write_init_super1, |
c7654afc | 1506 | #endif |
83b6208e | 1507 | .match_home = match_home1, |
82d9eba6 NB |
1508 | .uuid_from_super = uuid_from_super1, |
1509 | .getinfo_super = getinfo_super1, | |
1510 | .update_super = update_super1, | |
82d9eba6 NB |
1511 | .init_super = init_super1, |
1512 | .add_to_super = add_to_super1, | |
1513 | .store_super = store_super1, | |
82d9eba6 NB |
1514 | .compare_super = compare_super1, |
1515 | .load_super = load_super1, | |
1516 | .match_metadata_desc = match_metadata_desc1, | |
1517 | .avail_size = avail_size1, | |
34163fc7 NB |
1518 | .add_internal_bitmap = add_internal_bitmap1, |
1519 | .locate_bitmap = locate_bitmap1, | |
1520 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 1521 | .free_super = free_super1, |
17f25ca6 | 1522 | .validate_geometry = validate_geometry1, |
f277ce36 NB |
1523 | #if __BYTE_ORDER == BIG_ENDIAN |
1524 | .swapuuid = 0, | |
1525 | #else | |
1526 | .swapuuid = 1, | |
1527 | #endif | |
82d9eba6 | 1528 | }; |