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Commit | Line | Data |
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82d9eba6 NB |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
e736b623 | 4 | * Copyright (C) 2001-2009 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 | |
e736b623 | 22 | * Email: <neilb@suse.de> |
82d9eba6 NB |
23 | */ |
24 | ||
25 | #include "mdadm.h" | |
82d9eba6 NB |
26 | /* |
27 | * The version-1 superblock : | |
28 | * All numeric fields are little-endian. | |
29 | * | |
30 | * total size: 256 bytes plus 2 per device. | |
31 | * 1K allows 384 devices. | |
32 | */ | |
33 | struct mdp_superblock_1 { | |
34 | /* constant array information - 128 bytes */ | |
35 | __u32 magic; /* MD_SB_MAGIC: 0xa92b4efc - little endian */ | |
36 | __u32 major_version; /* 1 */ | |
37 | __u32 feature_map; /* 0 for now */ | |
38 | __u32 pad0; /* always set to 0 when writing */ | |
39 | ||
40 | __u8 set_uuid[16]; /* user-space generated. */ | |
41 | char set_name[32]; /* set and interpreted by user-space */ | |
42 | ||
43 | __u64 ctime; /* lo 40 bits are seconds, top 24 are microseconds or 0*/ | |
44 | __u32 level; /* -4 (multipath), -1 (linear), 0,1,4,5 */ | |
45 | __u32 layout; /* only for raid5 currently */ | |
46 | __u64 size; /* used size of component devices, in 512byte sectors */ | |
47 | ||
48 | __u32 chunksize; /* in 512byte sectors */ | |
49 | __u32 raid_disks; | |
34163fc7 NB |
50 | __u32 bitmap_offset; /* sectors after start of superblock that bitmap starts |
51 | * NOTE: signed, so bitmap can be before superblock | |
52 | * only meaningful of feature_map[0] is set. | |
53 | */ | |
b674b5b8 NB |
54 | |
55 | /* These are only valid with feature bit '4' */ | |
b674b5b8 | 56 | __u32 new_level; /* new level we are reshaping to */ |
ac957baa | 57 | __u64 reshape_position; /* next address in array-space for reshape */ |
b674b5b8 NB |
58 | __u32 delta_disks; /* change in number of raid_disks */ |
59 | __u32 new_layout; /* new layout */ | |
60 | __u32 new_chunk; /* new chunk size (bytes) */ | |
61 | __u8 pad1[128-124]; /* set to 0 when written */ | |
82d9eba6 NB |
62 | |
63 | /* constant this-device information - 64 bytes */ | |
64 | __u64 data_offset; /* sector start of data, often 0 */ | |
65 | __u64 data_size; /* sectors in this device that can be used for data */ | |
66 | __u64 super_offset; /* sector start of this superblock */ | |
67 | __u64 recovery_offset;/* sectors before this offset (from data_offset) have been recovered */ | |
68 | __u32 dev_number; /* permanent identifier of this device - not role in raid */ | |
69 | __u32 cnt_corrected_read; /* number of read errors that were corrected by re-writing */ | |
70 | __u8 device_uuid[16]; /* user-space setable, ignored by kernel */ | |
dfd4d8ee NB |
71 | __u8 devflags; /* per-device flags. Only one defined...*/ |
72 | #define WriteMostly1 1 /* mask for writemostly flag in above */ | |
73 | __u8 pad2[64-57]; /* set to 0 when writing */ | |
82d9eba6 NB |
74 | |
75 | /* array state information - 64 bytes */ | |
76 | __u64 utime; /* 40 bits second, 24 btes microseconds */ | |
77 | __u64 events; /* incremented when superblock updated */ | |
78 | __u64 resync_offset; /* data before this offset (from data_offset) known to be in sync */ | |
4180aa4d N |
79 | __u32 sb_csum; /* checksum upto dev_roles[max_dev] */ |
80 | __u32 max_dev; /* size of dev_roles[] array to consider */ | |
82d9eba6 NB |
81 | __u8 pad3[64-32]; /* set to 0 when writing */ |
82 | ||
83 | /* device state information. Indexed by dev_number. | |
84 | * 2 bytes per device | |
85 | * Note there are no per-device state flags. State information is rolled | |
86 | * into the 'roles' value. If a device is spare or faulty, then it doesn't | |
87 | * have a meaningful role. | |
88 | */ | |
89 | __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ | |
90 | }; | |
91 | ||
911cead7 N |
92 | #define MAX_SB_SIZE 4096 |
93 | /* bitmap super size is 256, but we round up to a sector for alignment */ | |
94 | #define BM_SUPER_SIZE 512 | |
95 | #define MAX_DEVS ((int)(MAX_SB_SIZE - sizeof(struct mdp_superblock_1)) / 2) | |
41226756 JS |
96 | #define SUPER1_SIZE (MAX_SB_SIZE + BM_SUPER_SIZE \ |
97 | + sizeof(struct misc_dev_info)) | |
911cead7 | 98 | |
bee8ec56 NB |
99 | struct misc_dev_info { |
100 | __u64 device_size; | |
101 | }; | |
102 | ||
d2cd3ffc NB |
103 | /* feature_map bits */ |
104 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
105 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
106 | * must be honoured | |
107 | */ | |
b674b5b8 | 108 | #define MD_FEATURE_RESHAPE_ACTIVE 4 |
d2cd3ffc | 109 | |
b674b5b8 | 110 | #define MD_FEATURE_ALL (1|2|4) |
d2cd3ffc | 111 | |
570c0542 | 112 | #ifndef offsetof |
067db4df | 113 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) |
570c0542 | 114 | #endif |
82d9eba6 NB |
115 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
116 | { | |
117 | unsigned int disk_csum, csum; | |
118 | unsigned long long newcsum; | |
119 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
120 | unsigned int *isuper = (unsigned int*)sb; | |
82d9eba6 NB |
121 | |
122 | /* make sure I can count... */ | |
123 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
124 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
125 | sizeof(struct mdp_superblock_1) != 256) { | |
126 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
127 | } | |
128 | ||
129 | disk_csum = sb->sb_csum; | |
130 | sb->sb_csum = 0; | |
131 | newcsum = 0; | |
e4c72d1d | 132 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
133 | newcsum += __le32_to_cpu(*isuper); |
134 | isuper++; | |
135 | } | |
82d9eba6 NB |
136 | |
137 | if (size == 2) | |
138 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
139 | ||
140 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
141 | sb->sb_csum = disk_csum; | |
83205b64 | 142 | return __cpu_to_le32(csum); |
82d9eba6 NB |
143 | } |
144 | ||
308340aa JS |
145 | /* |
146 | * Information related to file descriptor used for aligned reads/writes. | |
147 | * Cache the block size. | |
148 | */ | |
149 | struct align_fd { | |
150 | int fd; | |
151 | int blk_sz; | |
152 | }; | |
153 | ||
154 | static void init_afd(struct align_fd *afd, int fd) | |
155 | { | |
156 | afd->fd = fd; | |
157 | ||
158 | if (ioctl(afd->fd, BLKSSZGET, &afd->blk_sz) != 0) | |
159 | afd->blk_sz = 512; | |
160 | } | |
161 | ||
5ea022a1 | 162 | static char abuf[4096+4096]; |
308340aa | 163 | static int aread(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
164 | { |
165 | /* aligned read. | |
166 | * On devices with a 4K sector size, we need to read | |
167 | * the full sector and copy relevant bits into | |
168 | * the buffer | |
169 | */ | |
6ef89052 | 170 | int bsize, iosize; |
5ea022a1 N |
171 | char *b; |
172 | int n; | |
6ef89052 | 173 | |
308340aa JS |
174 | bsize = afd->blk_sz; |
175 | ||
176 | if (!bsize || bsize > 4096 || len > 4096) { | |
177 | if (!bsize) | |
178 | fprintf(stderr, "WARNING - aread() called with " | |
179 | "invalid block size\n"); | |
5ea022a1 | 180 | return -1; |
308340aa | 181 | } |
0a2f1894 | 182 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 183 | |
6ef89052 N |
184 | for (iosize = 0; iosize < len; iosize += bsize) |
185 | ; | |
308340aa | 186 | n = read(afd->fd, b, iosize); |
5ea022a1 N |
187 | if (n <= 0) |
188 | return n; | |
308340aa | 189 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
190 | if (n > len) |
191 | n = len; | |
192 | memcpy(buf, b, n); | |
193 | return n; | |
194 | } | |
195 | ||
308340aa | 196 | static int awrite(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
197 | { |
198 | /* aligned write. | |
199 | * On devices with a 4K sector size, we need to write | |
200 | * the full sector. We pre-read if the sector is larger | |
201 | * than the write. | |
202 | * The address must be sector-aligned. | |
203 | */ | |
6ef89052 | 204 | int bsize, iosize; |
5ea022a1 N |
205 | char *b; |
206 | int n; | |
308340aa JS |
207 | |
208 | bsize = afd->blk_sz; | |
209 | if (!bsize || bsize > 4096 || len > 4096) { | |
210 | if (!bsize) | |
211 | fprintf(stderr, "WARNING - awrite() called with " | |
212 | "invalid block size\n"); | |
5ea022a1 | 213 | return -1; |
308340aa | 214 | } |
0a2f1894 | 215 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 216 | |
6ef89052 N |
217 | for (iosize = 0; iosize < len ; iosize += bsize) |
218 | ; | |
219 | ||
220 | if (len != iosize) { | |
308340aa | 221 | n = read(afd->fd, b, iosize); |
6ef89052 N |
222 | if (n <= 0) |
223 | return n; | |
308340aa | 224 | lseek(afd->fd, -n, 1); |
6ef89052 N |
225 | } |
226 | ||
5ea022a1 | 227 | memcpy(b, buf, len); |
308340aa | 228 | n = write(afd->fd, b, iosize); |
5ea022a1 N |
229 | if (n <= 0) |
230 | return n; | |
308340aa | 231 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
232 | return len; |
233 | } | |
234 | ||
c7654afc | 235 | #ifndef MDASSEMBLE |
3da92f27 | 236 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 237 | { |
3da92f27 | 238 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 239 | time_t atime; |
f21e18ca | 240 | unsigned int d; |
e8e1c176 | 241 | int role; |
4180aa4d | 242 | int delta_extra = 0; |
82d9eba6 NB |
243 | int i; |
244 | char *c; | |
a1cbd7d0 | 245 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 246 | int layout; |
a17a3de3 | 247 | unsigned long long sb_offset; |
82d9eba6 NB |
248 | |
249 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
250 | printf(" Version : 1"); |
251 | sb_offset = __le64_to_cpu(sb->super_offset); | |
252 | if (sb_offset <= 4) | |
253 | printf(".1\n"); | |
254 | else if (sb_offset <= 8) | |
255 | printf(".2\n"); | |
256 | else | |
257 | printf(".0\n"); | |
91eedefc | 258 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
259 | printf(" Array UUID : "); |
260 | for (i=0; i<16; i++) { | |
82d9eba6 | 261 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 262 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
263 | } |
264 | printf("\n"); | |
a1cbd7d0 NB |
265 | printf(" Name : %.32s", sb->set_name); |
266 | if (l > 0 && l < 32 && | |
267 | sb->set_name[l] == ':' && | |
268 | strncmp(sb->set_name, homehost, l) == 0) | |
269 | printf(" (local to host %s)", homehost); | |
270 | printf("\n"); | |
82d9eba6 NB |
271 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
272 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
273 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
274 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
275 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
276 | printf("\n"); | |
5cda0964 | 277 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
278 | (unsigned long long)__le64_to_cpu(sb->data_size), |
279 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 280 | if (__le32_to_cpu(sb->level) > 0) { |
b674b5b8 NB |
281 | int ddsks=0; |
282 | switch(__le32_to_cpu(sb->level)) { | |
283 | case 1: ddsks=1;break; | |
284 | case 4: | |
83205b64 NB |
285 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
286 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
287 | case 10: | |
288 | layout = __le32_to_cpu(sb->layout); | |
289 | ddsks = __le32_to_cpu(sb->raid_disks) | |
290 | / (layout&255) / ((layout>>8)&255); | |
b674b5b8 NB |
291 | } |
292 | if (ddsks) | |
83205b64 | 293 | printf(" Array Size : %llu%s\n", |
c1c05f7f | 294 | ddsks*(unsigned long long)__le64_to_cpu(sb->size), |
83205b64 | 295 | human_size(ddsks*__le64_to_cpu(sb->size)<<9)); |
b674b5b8 | 296 | if (sb->size != sb->data_size) |
5cda0964 | 297 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
298 | (unsigned long long)__le64_to_cpu(sb->size), |
299 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 300 | } |
82d9eba6 | 301 | if (sb->data_offset) |
199171a2 NB |
302 | printf(" Data Offset : %llu sectors\n", |
303 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
304 | printf(" Super Offset : %llu sectors\n", | |
305 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc NB |
306 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
307 | printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
a3fd117c | 308 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
309 | printf(" Device UUID : "); |
310 | for (i=0; i<16; i++) { | |
82d9eba6 | 311 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 312 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
313 | } |
314 | printf("\n"); | |
b674b5b8 | 315 | printf("\n"); |
91eedefc NB |
316 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
317 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 318 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
8fac0577 | 319 | } |
b674b5b8 | 320 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 321 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
322 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
323 | if (__le32_to_cpu(sb->delta_disks)) { | |
324 | printf(" Delta Devices : %d", __le32_to_cpu(sb->delta_disks)); | |
4180aa4d N |
325 | printf(" (%d->%d)\n", |
326 | __le32_to_cpu(sb->raid_disks)-__le32_to_cpu(sb->delta_disks), | |
327 | __le32_to_cpu(sb->raid_disks)); | |
328 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
329 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
330 | } |
331 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
332 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
333 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
334 | } | |
335 | if (__le32_to_cpu(sb->new_layout) != __le32_to_cpu(sb->layout)) { | |
336 | if (__le32_to_cpu(sb->level) == 5) { | |
337 | c = map_num(r5layout, __le32_to_cpu(sb->new_layout)); | |
338 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
339 | } | |
fe77a154 N |
340 | if (__le32_to_cpu(sb->level) == 6) { |
341 | c = map_num(r6layout, __le32_to_cpu(sb->new_layout)); | |
342 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
343 | } | |
b674b5b8 | 344 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
345 | printf(" New Layout :"); |
346 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
347 | printf("\n"); | |
b674b5b8 NB |
348 | } |
349 | } | |
350 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
351 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
352 | printf("\n"); | |
353 | } | |
dfd4d8ee | 354 | if (sb->devflags) { |
62184891 | 355 | printf(" Flags :"); |
34163fc7 | 356 | if (sb->devflags & WriteMostly1) |
dfd4d8ee NB |
357 | printf(" write-mostly"); |
358 | printf("\n"); | |
359 | } | |
82d9eba6 NB |
360 | |
361 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
362 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
363 | ||
364 | if (calc_sb_1_csum(sb) == sb->sb_csum) | |
365 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
366 | else | |
367 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
368 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 369 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
370 | printf("\n"); |
371 | if (__le32_to_cpu(sb->level) == 5) { | |
372 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
373 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
374 | } | |
fe77a154 N |
375 | if (__le32_to_cpu(sb->level) == 6) { |
376 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
377 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
378 | } | |
265e0f17 NB |
379 | if (__le32_to_cpu(sb->level) == 10) { |
380 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
381 | printf(" Layout :"); |
382 | print_r10_layout(lo); | |
383 | printf("\n"); | |
265e0f17 | 384 | } |
82d9eba6 NB |
385 | switch(__le32_to_cpu(sb->level)) { |
386 | case 0: | |
387 | case 4: | |
388 | case 5: | |
d2cd3ffc NB |
389 | case 6: |
390 | case 10: | |
b674b5b8 | 391 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
392 | break; |
393 | case -1: | |
b674b5b8 | 394 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
395 | break; |
396 | default: break; | |
397 | } | |
398 | printf("\n"); | |
e8e1c176 N |
399 | #if 0 |
400 | /* This turns out to just be confusing */ | |
c3684618 NB |
401 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
402 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
403 | if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff) | |
404 | break; | |
405 | for (d=0; d < i; d++) { | |
406 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
407 | if (d) printf(", "); | |
408 | if (role == 0xffff) printf("empty"); | |
409 | else if(role == 0xfffe) printf("failed"); | |
410 | else printf("%d", role); | |
411 | } | |
412 | printf(")\n"); | |
e8e1c176 N |
413 | #endif |
414 | printf(" Device Role : "); | |
415 | d = __le32_to_cpu(sb->dev_number); | |
4180aa4d | 416 | if (d < __le32_to_cpu(sb->max_dev)) |
e8e1c176 N |
417 | role = __le16_to_cpu(sb->dev_roles[d]); |
418 | else | |
419 | role = 0xFFFF; | |
420 | if (role >= 0xFFFE) | |
421 | printf("spare\n"); | |
422 | else | |
423 | printf("Active device %d\n", role); | |
424 | ||
82d9eba6 | 425 | printf(" Array State : "); |
4180aa4d | 426 | for (d=0; d<__le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 427 | int cnt = 0; |
f21e18ca | 428 | unsigned int i; |
82d9eba6 | 429 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 430 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 431 | if (role == d) |
82d9eba6 | 432 | cnt++; |
82d9eba6 NB |
433 | } |
434 | if (cnt > 1) printf("?"); | |
e8e1c176 N |
435 | else if (cnt == 1) printf("A"); |
436 | else printf ("."); | |
82d9eba6 | 437 | } |
e8e1c176 N |
438 | #if 0 |
439 | /* This is confusing too */ | |
6fbba4c9 | 440 | faulty = 0; |
82d9eba6 NB |
441 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
442 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
6fbba4c9 NB |
443 | if (role == 0xFFFE) |
444 | faulty++; | |
82d9eba6 | 445 | } |
82d9eba6 | 446 | if (faulty) printf(" %d failed", faulty); |
e8e1c176 N |
447 | #endif |
448 | printf(" ('A' == active, '.' == missing)"); | |
82d9eba6 NB |
449 | printf("\n"); |
450 | } | |
451 | ||
452 | ||
061f2c6a | 453 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 454 | { |
3da92f27 | 455 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 456 | int i; |
a17a3de3 | 457 | unsigned long long sb_offset; |
2998bc01 | 458 | char *nm; |
b015e6c2 | 459 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
460 | |
461 | nm = strchr(sb->set_name, ':'); | |
462 | if (nm) | |
463 | nm++; | |
464 | else if (sb->set_name[0]) | |
465 | nm = sb->set_name; | |
466 | else | |
cf8de691 | 467 | nm = NULL; |
82d9eba6 | 468 | |
061f2c6a N |
469 | printf("ARRAY%s%s", nm ? " /dev/md/":"", nm); |
470 | if (verbose && c) | |
471 | printf(" level=%s", c); | |
a17a3de3 DL |
472 | sb_offset = __le64_to_cpu(sb->super_offset); |
473 | if (sb_offset <= 4) | |
e9a0e728 | 474 | printf(" metadata=1.1 "); |
a17a3de3 | 475 | else if (sb_offset <= 8) |
e9a0e728 | 476 | printf(" metadata=1.2 "); |
a17a3de3 | 477 | else |
e9a0e728 | 478 | printf(" metadata=1.0 "); |
061f2c6a N |
479 | if (verbose) |
480 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
481 | printf("UUID="); | |
82d9eba6 | 482 | for (i=0; i<16; i++) { |
82d9eba6 | 483 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 484 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 485 | } |
947fd4dd NB |
486 | if (sb->set_name[0]) |
487 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
488 | printf("\n"); |
489 | } | |
490 | ||
0d726f17 KS |
491 | static void export_examine_super1(struct supertype *st) |
492 | { | |
493 | struct mdp_superblock_1 *sb = st->sb; | |
494 | int i; | |
495 | int len = 32; | |
496 | ||
497 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
498 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
499 | for (i=0; i<32; i++) | |
500 | if (sb->set_name[i] == '\n' || | |
501 | sb->set_name[i] == '\0') { | |
502 | len = i; | |
503 | break; | |
504 | } | |
505 | if (len) | |
506 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
507 | printf("MD_UUID="); | |
508 | for (i=0; i<16; i++) { | |
509 | if ((i&3)==0 && i != 0) printf(":"); | |
510 | printf("%02x", sb->set_uuid[i]); | |
511 | } | |
512 | printf("\n"); | |
513 | printf("MD_UPDATE_TIME=%llu\n", | |
514 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
515 | printf("MD_DEV_UUID="); | |
516 | for (i=0; i<16; i++) { | |
517 | if ((i&3)==0 && i != 0) printf(":"); | |
518 | printf("%02x", sb->device_uuid[i]); | |
519 | } | |
520 | printf("\n"); | |
521 | printf("MD_EVENTS=%llu\n", | |
522 | (unsigned long long)__le64_to_cpu(sb->events)); | |
523 | } | |
524 | ||
3da92f27 | 525 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 526 | { |
3da92f27 | 527 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 528 | int i; |
b6750aa8 | 529 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 530 | |
b6750aa8 NB |
531 | printf(" Name : %.32s", sb->set_name); |
532 | if (l > 0 && l < 32 && | |
533 | sb->set_name[l] == ':' && | |
534 | strncmp(sb->set_name, homehost, l) == 0) | |
535 | printf(" (local to host %s)", homehost); | |
536 | printf("\n UUID : "); | |
82d9eba6 | 537 | for (i=0; i<16; i++) { |
82d9eba6 | 538 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 539 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 540 | } |
570c0542 | 541 | printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
542 | } |
543 | ||
3da92f27 | 544 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 545 | { |
3da92f27 | 546 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
547 | int i; |
548 | ||
947fd4dd NB |
549 | if (sb->set_name[0]) |
550 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
551 | printf(" UUID="); |
552 | for (i=0; i<16; i++) { | |
82d9eba6 | 553 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 554 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
555 | } |
556 | } | |
557 | ||
0d726f17 | 558 | static void export_detail_super1(struct supertype *st) |
54bad364 | 559 | { |
3da92f27 | 560 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
561 | int i; |
562 | int len = 32; | |
563 | ||
564 | for (i=0; i<32; i++) | |
565 | if (sb->set_name[i] == '\n' || | |
566 | sb->set_name[i] == '\0') { | |
567 | len = i; | |
568 | break; | |
569 | } | |
570 | if (len) | |
571 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
572 | } |
573 | ||
c7654afc NB |
574 | #endif |
575 | ||
3da92f27 | 576 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 577 | { |
3da92f27 | 578 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
579 | int l = homehost ? strlen(homehost) : 0; |
580 | ||
581 | return (l > 0 && l < 32 && | |
582 | sb->set_name[l] == ':' && | |
583 | strncmp(sb->set_name, homehost, l) == 0); | |
584 | } | |
585 | ||
3da92f27 | 586 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 587 | { |
3da92f27 | 588 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
589 | char *cuuid = (char*)uuid; |
590 | int i; | |
591 | for (i=0; i<16; i++) | |
592 | cuuid[i] = super->set_uuid[i]; | |
593 | } | |
594 | ||
a5d85af7 | 595 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 596 | { |
3da92f27 | 597 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 598 | int working = 0; |
f21e18ca | 599 | unsigned int i; |
a5d85af7 N |
600 | unsigned int role; |
601 | unsigned int map_disks = info->array.raid_disks; | |
82d9eba6 | 602 | |
95eeceeb | 603 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 604 | info->array.major_version = 1; |
b8ac1967 | 605 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
606 | info->array.patch_version = 0; |
607 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
608 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 609 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
610 | info->array.md_minor = -1; |
611 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 612 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 613 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c | 614 | info->array.state = |
d5977056 | 615 | (__le64_to_cpu(sb->resync_offset) == MaxSector) |
4855f95c | 616 | ? 1 : 0; |
353632d9 NB |
617 | |
618 | info->data_offset = __le64_to_cpu(sb->data_offset); | |
619 | info->component_size = __le64_to_cpu(sb->size); | |
c0c1acd6 N |
620 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) |
621 | info->bitmap_offset = __le32_to_cpu(sb->bitmap_offset); | |
82d9eba6 NB |
622 | |
623 | info->disk.major = 0; | |
624 | info->disk.minor = 0; | |
fbf8a0b7 | 625 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 | 626 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
911cead7 | 627 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) |
82d9eba6 NB |
628 | role = 0xfffe; |
629 | else | |
630 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
631 | ||
632 | info->disk.raid_disk = -1; | |
633 | switch(role) { | |
634 | case 0xFFFF: | |
f22385f9 | 635 | info->disk.state = 0; /* spare: not active, not sync, not faulty */ |
82d9eba6 NB |
636 | break; |
637 | case 0xFFFE: | |
638 | info->disk.state = 1; /* faulty */ | |
639 | break; | |
640 | default: | |
641 | info->disk.state = 6; /* active and in sync */ | |
642 | info->disk.raid_disk = role; | |
643 | } | |
cb099724 N |
644 | if (sb->devflags & WriteMostly1) |
645 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
82d9eba6 | 646 | info->events = __le64_to_cpu(sb->events); |
1522c538 | 647 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 648 | info->safe_mode_delay = 200; |
82d9eba6 NB |
649 | |
650 | memcpy(info->uuid, sb->set_uuid, 16); | |
651 | ||
31317663 NB |
652 | strncpy(info->name, sb->set_name, 32); |
653 | info->name[32] = 0; | |
947fd4dd | 654 | |
921d9e16 N |
655 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
656 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
657 | else | |
658 | info->recovery_start = MaxSector; | |
659 | ||
353632d9 NB |
660 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
661 | info->reshape_active = 1; | |
662 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); | |
663 | info->new_level = __le32_to_cpu(sb->new_level); | |
664 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
665 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 666 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
667 | if (info->delta_disks < 0) |
668 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
669 | } else |
670 | info->reshape_active = 0; | |
671 | ||
6e75048b AK |
672 | info->recovery_blocked = info->reshape_active; |
673 | ||
a5d85af7 N |
674 | if (map) |
675 | for (i=0; i<map_disks; i++) | |
676 | map[i] = 0; | |
f21e18ca | 677 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 678 | role = __le16_to_cpu(sb->dev_roles[i]); |
a5d85af7 | 679 | if (/*role == 0xFFFF || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 680 | working++; |
a5d85af7 N |
681 | if (map && role < map_disks) |
682 | map[role] = 1; | |
683 | } | |
82d9eba6 NB |
684 | } |
685 | ||
686 | info->array.working_disks = working; | |
687 | } | |
688 | ||
00bbdbda N |
689 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
690 | { | |
691 | struct mdinfo *info; | |
692 | ||
693 | if (subarray) | |
694 | return NULL; | |
695 | ||
696 | info = malloc(sizeof(*info)); | |
697 | getinfo_super1(st, info, NULL); | |
698 | return info; | |
699 | } | |
700 | ||
68c7d6d7 | 701 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 702 | char *update, |
e5eac01f NB |
703 | char *devname, int verbose, |
704 | int uuid_set, char *homehost) | |
82d9eba6 | 705 | { |
5a31170d N |
706 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
707 | * if any change was made. For others, the return value is | |
708 | * ignored. | |
c4d831e1 | 709 | */ |
82d9eba6 | 710 | int rv = 0; |
3da92f27 | 711 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 712 | |
67a8c82d NB |
713 | if (strcmp(update, "force-one")==0) { |
714 | /* Not enough devices for a working array, | |
715 | * so bring this one up-to-date | |
716 | */ | |
c4d831e1 NB |
717 | if (sb->events != __cpu_to_le64(info->events)) |
718 | rv = 1; | |
6d3d5804 | 719 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 720 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
721 | /* Degraded array and 'force' requests to |
722 | * maybe need to mark it 'clean'. | |
723 | */ | |
82d9eba6 NB |
724 | switch(__le32_to_cpu(sb->level)) { |
725 | case 5: case 4: case 6: | |
726 | /* need to force clean */ | |
b7528a20 | 727 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 728 | rv = 1; |
b7528a20 | 729 | sb->resync_offset = MaxSector; |
82d9eba6 | 730 | } |
1e2b2765 | 731 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
732 | int d = info->disk.number; |
733 | int want; | |
734 | if (info->disk.state == 6) | |
a2ce5a1a | 735 | want = info->disk.raid_disk; |
82d9eba6 NB |
736 | else |
737 | want = 0xFFFF; | |
a2ce5a1a N |
738 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
739 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
740 | rv = 1; |
741 | } | |
d43494fc N |
742 | if (info->reshape_active && |
743 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
744 | info->delta_disks >= 0 && | |
745 | info->reshape_progress < __le64_to_cpu(sb->reshape_position)) { | |
746 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
747 | rv = 1; | |
748 | } | |
749 | if (info->reshape_active && | |
750 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
751 | info->delta_disks < 0 && | |
752 | info->reshape_progress > __le64_to_cpu(sb->reshape_position)) { | |
753 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
754 | rv = 1; | |
755 | } | |
1e2b2765 | 756 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 757 | unsigned int i; |
1c6cb603 | 758 | int rfd, fd; |
f21e18ca | 759 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f NB |
760 | |
761 | for (i=0 ; i < max ; i++) | |
762 | if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe) | |
763 | break; | |
764 | sb->dev_number = __cpu_to_le32(i); | |
765 | info->disk.number = i; | |
766 | if (max >= __le32_to_cpu(sb->max_dev)) | |
767 | sb->max_dev = __cpu_to_le32(max+1); | |
768 | ||
769 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
770 | read(rfd, sb->device_uuid, 16) != 16) { | |
caa0f6c6 N |
771 | __u32 r[4] = {random(), random(), random(), random()}; |
772 | memcpy(sb->device_uuid, r, 16); | |
f752781f | 773 | } |
7cbeb80e N |
774 | if (rfd >= 0) |
775 | close(rfd); | |
f752781f NB |
776 | |
777 | sb->dev_roles[i] = | |
778 | __cpu_to_le16(info->disk.raid_disk); | |
1c6cb603 N |
779 | |
780 | fd = open(devname, O_RDONLY); | |
781 | if (fd >= 0) { | |
782 | unsigned long long ds; | |
783 | get_dev_size(fd, devname, &ds); | |
784 | close(fd); | |
785 | ds >>= 9; | |
786 | if (__le64_to_cpu(sb->super_offset) < | |
787 | __le64_to_cpu(sb->data_offset)) { | |
788 | sb->data_size = __cpu_to_le64( | |
789 | ds - __le64_to_cpu(sb->data_offset)); | |
790 | } else { | |
791 | ds -= 8*2; | |
792 | ds &= ~(unsigned long long)(4*2-1); | |
793 | sb->super_offset = __cpu_to_le64(ds); | |
794 | sb->data_size = __cpu_to_le64( | |
795 | ds - __le64_to_cpu(sb->data_offset)); | |
796 | } | |
797 | } | |
1e2b2765 | 798 | } else if (strcmp(update, "linear-grow-update") == 0) { |
82d9eba6 | 799 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
800 | sb->dev_roles[info->disk.number] = |
801 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 802 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 803 | /* make sure resync happens */ |
434b7755 | 804 | sb->resync_offset = 0ULL; |
1e2b2765 | 805 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 806 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 807 | |
14263cf1 NB |
808 | if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) { |
809 | struct bitmap_super_s *bm; | |
911cead7 | 810 | bm = (struct bitmap_super_s*)(st->sb+MAX_SB_SIZE); |
bf4fb153 | 811 | memcpy(bm->uuid, sb->set_uuid, 16); |
14263cf1 | 812 | } |
5a31170d N |
813 | } else if (strcmp(update, "no-bitmap") == 0) { |
814 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
1e2b2765 | 815 | } else if (strcmp(update, "homehost") == 0 && |
0f23aa88 | 816 | homehost) { |
0237e0ca NB |
817 | char *c; |
818 | update = "name"; | |
819 | c = strchr(sb->set_name, ':'); | |
820 | if (c) | |
821 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
822 | else | |
823 | strncpy(info->name, sb->set_name, 32); | |
26a0b8fd | 824 | info->name[32] = 0; |
1e2b2765 | 825 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
826 | if (info->name[0] == 0) |
827 | sprintf(info->name, "%d", info->array.md_minor); | |
828 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
829 | if (homehost && | |
830 | strchr(info->name, ':') == NULL && | |
831 | strlen(homehost)+1+strlen(info->name) < 32) { | |
832 | strcpy(sb->set_name, homehost); | |
833 | strcat(sb->set_name, ":"); | |
834 | strcat(sb->set_name, info->name); | |
835 | } else | |
836 | strcpy(sb->set_name, info->name); | |
1e2b2765 | 837 | } else if (strcmp(update, "devicesize") == 0 && |
bee8ec56 NB |
838 | __le64_to_cpu(sb->super_offset) < |
839 | __le64_to_cpu(sb->data_offset)) { | |
840 | /* set data_size to device size less data_offset */ | |
841 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
911cead7 | 842 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); |
eb9199fb NB |
843 | printf("Size was %llu\n", (unsigned long long) |
844 | __le64_to_cpu(sb->data_size)); | |
bee8ec56 NB |
845 | sb->data_size = __cpu_to_le64( |
846 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
eb9199fb NB |
847 | printf("Size is %llu\n", (unsigned long long) |
848 | __le64_to_cpu(sb->data_size)); | |
1e2b2765 | 849 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 850 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
16715c01 DL |
851 | else if (strcmp(update, "writemostly")==0) |
852 | sb->devflags |= WriteMostly1; | |
853 | else if (strcmp(update, "readwrite")==0) | |
854 | sb->devflags &= ~WriteMostly1; | |
1e2b2765 N |
855 | else |
856 | rv = -1; | |
82d9eba6 NB |
857 | |
858 | sb->sb_csum = calc_sb_1_csum(sb); | |
859 | return rv; | |
860 | } | |
861 | ||
3da92f27 | 862 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
3d3dd91e | 863 | unsigned long long size, char *name, char *homehost, int *uuid) |
82d9eba6 | 864 | { |
6416d527 | 865 | struct mdp_superblock_1 *sb; |
82d9eba6 | 866 | int spares; |
34163fc7 | 867 | int rfd; |
05697ec1 | 868 | char defname[10]; |
911cead7 | 869 | int sbsize; |
6416d527 | 870 | |
3c0bcd46 | 871 | if (posix_memalign((void**)&sb, 4096, SUPER1_SIZE) != 0) { |
3d2c4fc7 DW |
872 | fprintf(stderr, Name |
873 | ": %s could not allocate superblock\n", __func__); | |
874 | return 0; | |
875 | } | |
1afa9308 | 876 | memset(sb, 0, SUPER1_SIZE); |
82d9eba6 | 877 | |
64557c33 | 878 | st->sb = sb; |
ba7eb04f | 879 | if (info == NULL) { |
82d9eba6 NB |
880 | /* zeroing superblock */ |
881 | return 0; | |
05697ec1 | 882 | } |
82d9eba6 NB |
883 | |
884 | spares = info->working_disks - info->active_disks; | |
911cead7 | 885 | if (info->raid_disks + spares > MAX_DEVS) { |
82d9eba6 | 886 | fprintf(stderr, Name ": too many devices requested: %d+%d > %d\n", |
911cead7 | 887 | info->raid_disks , spares, MAX_DEVS); |
82d9eba6 NB |
888 | return 0; |
889 | } | |
890 | ||
82d9eba6 NB |
891 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
892 | sb->major_version = __cpu_to_le32(1); | |
893 | sb->feature_map = 0; | |
894 | sb->pad0 = 0; | |
34163fc7 | 895 | |
350f29f9 NB |
896 | if (uuid) |
897 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
898 | else { | |
3d3dd91e NB |
899 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
900 | read(rfd, sb->set_uuid, 16) != 16) { | |
caa0f6c6 N |
901 | __u32 r[4] = {random(), random(), random(), random()}; |
902 | memcpy(sb->set_uuid, r, 16); | |
3d3dd91e NB |
903 | } |
904 | if (rfd >= 0) close(rfd); | |
34163fc7 | 905 | } |
82d9eba6 | 906 | |
05697ec1 NB |
907 | if (name == NULL || *name == 0) { |
908 | sprintf(defname, "%d", info->md_minor); | |
909 | name = defname; | |
910 | } | |
05697ec1 NB |
911 | if (homehost && |
912 | strchr(name, ':')== NULL && | |
913 | strlen(homehost)+1+strlen(name) < 32) { | |
914 | strcpy(sb->set_name, homehost); | |
915 | strcat(sb->set_name, ":"); | |
916 | strcat(sb->set_name, name); | |
917 | } else | |
918 | strcpy(sb->set_name, name); | |
82d9eba6 NB |
919 | |
920 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
921 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 922 | sb->layout = __cpu_to_le32(info->layout); |
5dd497ee | 923 | sb->size = __cpu_to_le64(size*2ULL); |
82d9eba6 NB |
924 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
925 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
926 | ||
927 | sb->data_offset = __cpu_to_le64(0); | |
928 | sb->data_size = __cpu_to_le64(0); | |
929 | sb->super_offset = __cpu_to_le64(0); | |
930 | sb->recovery_offset = __cpu_to_le64(0); | |
931 | ||
932 | sb->utime = sb->ctime; | |
933 | sb->events = __cpu_to_le64(1); | |
34321279 | 934 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 935 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
936 | else |
937 | sb->resync_offset = 0; | |
911cead7 N |
938 | sbsize = sizeof(struct mdp_superblock_1) + 2 * (info->raid_disks + spares); |
939 | sbsize = ROUND_UP(sbsize, 512); | |
940 | sb->max_dev = __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
82d9eba6 | 941 | |
911cead7 | 942 | memset(sb->dev_roles, 0xff, MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); |
82d9eba6 | 943 | |
82d9eba6 NB |
944 | return 1; |
945 | } | |
946 | ||
111d01fc NB |
947 | struct devinfo { |
948 | int fd; | |
949 | char *devname; | |
950 | mdu_disk_info_t disk; | |
951 | struct devinfo *next; | |
952 | }; | |
0e600426 | 953 | #ifndef MDASSEMBLE |
82d9eba6 | 954 | /* Add a device to the superblock being created */ |
f20c3968 | 955 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
111d01fc | 956 | int fd, char *devname) |
82d9eba6 | 957 | { |
3da92f27 | 958 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 959 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc NB |
960 | struct devinfo *di, **dip; |
961 | ||
dfd4d8ee | 962 | if ((dk->state & 6) == 6) /* active, sync */ |
82d9eba6 | 963 | *rp = __cpu_to_le16(dk->raid_disk); |
412ca2e5 | 964 | else if ((dk->state & ~2) == 0) /* active or idle -> spare */ |
82d9eba6 | 965 | *rp = 0xffff; |
34163fc7 | 966 | else |
82d9eba6 | 967 | *rp = 0xfffe; |
111d01fc | 968 | |
f21e18ca | 969 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
911cead7 | 970 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) |
9df04a4f | 971 | sb->max_dev = __cpu_to_le32(dk->number+1); |
8844e291 | 972 | |
d2ca6449 | 973 | sb->dev_number = __cpu_to_le32(dk->number); |
16715c01 | 974 | sb->devflags = 0; /* don't copy another disks flags */ |
d2ca6449 NB |
975 | sb->sb_csum = calc_sb_1_csum(sb); |
976 | ||
111d01fc NB |
977 | dip = (struct devinfo **)&st->info; |
978 | while (*dip) | |
979 | dip = &(*dip)->next; | |
980 | di = malloc(sizeof(struct devinfo)); | |
981 | di->fd = fd; | |
982 | di->devname = devname; | |
983 | di->disk = *dk; | |
984 | di->next = NULL; | |
985 | *dip = di; | |
f20c3968 DW |
986 | |
987 | return 0; | |
82d9eba6 | 988 | } |
0e600426 | 989 | #endif |
82d9eba6 | 990 | |
3da92f27 | 991 | static void locate_bitmap1(struct supertype *st, int fd); |
14263cf1 | 992 | |
3da92f27 | 993 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 994 | { |
3da92f27 | 995 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 996 | unsigned long long sb_offset; |
308340aa | 997 | struct align_fd afd; |
82d9eba6 | 998 | int sbsize; |
5dd497ee | 999 | unsigned long long dsize; |
96395475 | 1000 | |
beae1dfe NB |
1001 | if (!get_dev_size(fd, NULL, &dsize)) |
1002 | return 1; | |
1003 | ||
1004 | dsize >>= 9; | |
96395475 | 1005 | |
5dd497ee | 1006 | if (dsize < 24) |
96395475 NB |
1007 | return 2; |
1008 | ||
308340aa JS |
1009 | init_afd(&afd, fd); |
1010 | ||
96395475 NB |
1011 | /* |
1012 | * Calculate the position of the superblock. | |
1013 | * It is always aligned to a 4K boundary and | |
1014 | * depending on minor_version, it can be: | |
1015 | * 0: At least 8K, but less than 12K, from end of device | |
1016 | * 1: At start of device | |
1017 | * 2: 4K from start of device. | |
1018 | */ | |
1019 | switch(st->minor_version) { | |
1020 | case 0: | |
5dd497ee | 1021 | sb_offset = dsize; |
96395475 NB |
1022 | sb_offset -= 8*2; |
1023 | sb_offset &= ~(4*2-1); | |
1024 | break; | |
1025 | case 1: | |
6fbba4c9 | 1026 | sb_offset = 0; |
96395475 NB |
1027 | break; |
1028 | case 2: | |
1029 | sb_offset = 4*2; | |
1030 | break; | |
1031 | default: | |
1032 | return -EINVAL; | |
1033 | } | |
1034 | ||
82d9eba6 | 1035 | |
34163fc7 | 1036 | |
6fbba4c9 NB |
1037 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
1038 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 NB |
1039 | ) { |
1040 | fprintf(stderr, Name ": internal error - sb_offset is wrong\n"); | |
1041 | abort(); | |
1042 | } | |
82d9eba6 | 1043 | |
6fbba4c9 | 1044 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
1045 | return 3; |
1046 | ||
0a2f1894 | 1047 | sbsize = ROUND_UP(sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev), 512); |
82d9eba6 | 1048 | |
308340aa | 1049 | if (awrite(&afd, sb, sbsize) != sbsize) |
82d9eba6 NB |
1050 | return 4; |
1051 | ||
14263cf1 NB |
1052 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1053 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
911cead7 | 1054 | (((char*)sb)+MAX_SB_SIZE); |
14263cf1 | 1055 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
3da92f27 | 1056 | locate_bitmap1(st, fd); |
308340aa JS |
1057 | if (awrite(&afd, bm, sizeof(*bm)) != sizeof(*bm)) |
1058 | return 5; | |
14263cf1 NB |
1059 | } |
1060 | } | |
570c0542 | 1061 | fsync(fd); |
82d9eba6 NB |
1062 | return 0; |
1063 | } | |
1064 | ||
3da92f27 | 1065 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1066 | |
2fb749d1 NB |
1067 | static unsigned long choose_bm_space(unsigned long devsize) |
1068 | { | |
1069 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1070 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1071 | * NOTE: result must be multiple of 4K else bad things happen |
1072 | * on 4K-sector devices. | |
2fb749d1 | 1073 | */ |
69646c14 | 1074 | if (devsize < 64*2) return 0; |
2fb749d1 NB |
1075 | if (devsize - 64*2 >= 200*1024*1024*2) |
1076 | return 128*2; | |
1077 | if (devsize - 4*2 > 8*1024*1024*2) | |
1078 | return 64*2; | |
1079 | return 4*2; | |
1080 | } | |
1081 | ||
e8090005 N |
1082 | static void free_super1(struct supertype *st); |
1083 | ||
111d01fc NB |
1084 | #ifndef MDASSEMBLE |
1085 | static int write_init_super1(struct supertype *st) | |
82d9eba6 | 1086 | { |
3da92f27 | 1087 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1088 | struct supertype *refst; |
dfe47e00 | 1089 | int rfd; |
111d01fc | 1090 | int rv = 0; |
f21e18ca | 1091 | unsigned long long bm_space; |
a380e275 | 1092 | unsigned long long reserved; |
111d01fc | 1093 | struct devinfo *di; |
8fac0577 | 1094 | unsigned long long dsize, array_size; |
f21e18ca | 1095 | unsigned long long sb_offset; |
82d9eba6 | 1096 | |
111d01fc NB |
1097 | for (di = st->info; di && ! rv ; di = di->next) { |
1098 | if (di->disk.state == 1) | |
1099 | continue; | |
a0c8a17f NB |
1100 | if (di->fd < 0) |
1101 | continue; | |
82d9eba6 | 1102 | |
9277cc77 N |
1103 | while (Kill(di->devname, NULL, 0, 1, 1) == 0) |
1104 | ; | |
82d9eba6 | 1105 | |
111d01fc NB |
1106 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1107 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
adbb382b | 1108 | sb->devflags |= WriteMostly1; |
9a88e7b6 | 1109 | else |
adbb382b | 1110 | sb->devflags &= ~WriteMostly1; |
892debc8 | 1111 | |
111d01fc NB |
1112 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
1113 | read(rfd, sb->device_uuid, 16) != 16) { | |
83208785 N |
1114 | __u32 r[4] = {random(), random(), random(), random()}; |
1115 | memcpy(sb->device_uuid, r, 16); | |
111d01fc | 1116 | } |
83208785 N |
1117 | if (rfd >= 0) |
1118 | close(rfd); | |
1119 | ||
111d01fc NB |
1120 | sb->events = 0; |
1121 | ||
e8090005 N |
1122 | refst = dup_super(st); |
1123 | if (load_super1(refst, di->fd, NULL)==0) { | |
1124 | struct mdp_superblock_1 *refsb = refst->sb; | |
111d01fc NB |
1125 | |
1126 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1127 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1128 | /* same array, so preserve events and | |
1129 | * dev_number */ | |
1130 | sb->events = refsb->events; | |
1131 | /* bugs in 2.6.17 and earlier mean the | |
1132 | * dev_number chosen in Manage must be preserved | |
1133 | */ | |
1134 | if (get_linux_version() >= 2006018) | |
1135 | sb->dev_number = refsb->dev_number; | |
1136 | } | |
e8090005 | 1137 | free_super1(refst); |
892debc8 | 1138 | } |
e8090005 | 1139 | free(refst); |
34163fc7 | 1140 | |
40114213 JS |
1141 | if (!get_dev_size(di->fd, NULL, &dsize)) { |
1142 | rv = 1; | |
1143 | goto error_out; | |
1144 | } | |
111d01fc | 1145 | dsize >>= 9; |
82d9eba6 | 1146 | |
111d01fc NB |
1147 | if (dsize < 24) { |
1148 | close(di->fd); | |
40114213 JS |
1149 | rv = 2; |
1150 | goto error_out; | |
111d01fc | 1151 | } |
82d9eba6 NB |
1152 | |
1153 | ||
111d01fc NB |
1154 | /* |
1155 | * Calculate the position of the superblock. | |
1156 | * It is always aligned to a 4K boundary and | |
1157 | * depending on minor_version, it can be: | |
1158 | * 0: At least 8K, but less than 12K, from end of device | |
1159 | * 1: At start of device | |
1160 | * 2: 4K from start of device. | |
1161 | * Depending on the array size, we might leave extra space | |
1162 | * for a bitmap. | |
1163 | */ | |
1164 | array_size = __le64_to_cpu(sb->size); | |
1165 | /* work out how much space we left for a bitmap */ | |
1166 | bm_space = choose_bm_space(array_size); | |
1167 | ||
1168 | switch(st->minor_version) { | |
1169 | case 0: | |
1170 | sb_offset = dsize; | |
1171 | sb_offset -= 8*2; | |
1172 | sb_offset &= ~(4*2-1); | |
1173 | sb->super_offset = __cpu_to_le64(sb_offset); | |
1174 | sb->data_offset = __cpu_to_le64(0); | |
f21e18ca | 1175 | if (sb_offset < array_size + bm_space) |
a380e275 | 1176 | bm_space = sb_offset - array_size; |
111d01fc NB |
1177 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
1178 | break; | |
1179 | case 1: | |
1180 | sb->super_offset = __cpu_to_le64(0); | |
a380e275 N |
1181 | reserved = bm_space + 4*2; |
1182 | /* Try for multiple of 1Meg so it is nicely aligned */ | |
1183 | #define ONE_MEG (2*1024) | |
1184 | reserved = ((reserved + ONE_MEG-1)/ONE_MEG) * ONE_MEG; | |
1185 | if (reserved + __le64_to_cpu(sb->size) > dsize) | |
1186 | reserved = dsize - __le64_to_cpu(sb->size); | |
1187 | /* force 4K alignment */ | |
1188 | reserved &= ~7ULL; | |
1189 | ||
1190 | sb->data_offset = __cpu_to_le64(reserved); | |
1191 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
111d01fc NB |
1192 | break; |
1193 | case 2: | |
1194 | sb_offset = 4*2; | |
1195 | sb->super_offset = __cpu_to_le64(4*2); | |
1196 | if (4*2 + 4*2 + bm_space + __le64_to_cpu(sb->size) | |
1197 | > dsize) | |
1198 | bm_space = dsize - __le64_to_cpu(sb->size) | |
1199 | - 4*2 - 4*2; | |
a380e275 N |
1200 | |
1201 | reserved = bm_space + 4*2 + 4*2; | |
1202 | /* Try for multiple of 1Meg so it is nicely aligned */ | |
1203 | #define ONE_MEG (2*1024) | |
1204 | reserved = ((reserved + ONE_MEG-1)/ONE_MEG) * ONE_MEG; | |
1205 | if (reserved + __le64_to_cpu(sb->size) > dsize) | |
1206 | reserved = dsize - __le64_to_cpu(sb->size); | |
1207 | /* force 4K alignment */ | |
1208 | reserved &= ~7ULL; | |
1209 | ||
1210 | sb->data_offset = __cpu_to_le64(reserved); | |
1211 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
111d01fc NB |
1212 | break; |
1213 | default: | |
40114213 JS |
1214 | fprintf(stderr, Name ": Failed to write invalid " |
1215 | "metadata format 1.%i to %s\n", | |
1216 | st->minor_version, di->devname); | |
1217 | rv = -EINVAL; | |
1218 | goto out; | |
111d01fc | 1219 | } |
82d9eba6 NB |
1220 | |
1221 | ||
111d01fc NB |
1222 | sb->sb_csum = calc_sb_1_csum(sb); |
1223 | rv = store_super1(st, di->fd); | |
111d01fc NB |
1224 | if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1)) |
1225 | rv = st->ss->write_bitmap(st, di->fd); | |
1226 | close(di->fd); | |
1227 | di->fd = -1; | |
1228 | } | |
40114213 JS |
1229 | error_out: |
1230 | if (rv) | |
1231 | fprintf(stderr, Name ": Failed to write metadata to %s\n", | |
1232 | di->devname); | |
1233 | out: | |
82d9eba6 NB |
1234 | return rv; |
1235 | } | |
111d01fc | 1236 | #endif |
82d9eba6 | 1237 | |
64557c33 | 1238 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
1239 | { |
1240 | /* | |
1241 | * return: | |
1242 | * 0 same, or first was empty, and second was copied | |
1243 | * 1 second had wrong number | |
1244 | * 2 wrong uuid | |
1245 | * 3 wrong other info | |
1246 | */ | |
64557c33 NB |
1247 | struct mdp_superblock_1 *first = st->sb; |
1248 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
1249 | |
1250 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
1251 | return 1; | |
1252 | if (second->major_version != __cpu_to_le32(1)) | |
1253 | return 1; | |
1254 | ||
1255 | if (!first) { | |
3c0bcd46 | 1256 | if (posix_memalign((void**)&first, 4096, SUPER1_SIZE) != 0) { |
3d2c4fc7 DW |
1257 | fprintf(stderr, Name |
1258 | ": %s could not allocate superblock\n", __func__); | |
1259 | return 1; | |
1260 | } | |
41226756 | 1261 | memcpy(first, second, SUPER1_SIZE); |
64557c33 | 1262 | st->sb = first; |
82d9eba6 NB |
1263 | return 0; |
1264 | } | |
1265 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
1266 | return 2; | |
1267 | ||
1268 | if (first->ctime != second->ctime || | |
1269 | first->level != second->level || | |
1270 | first->layout != second->layout || | |
1271 | first->size != second->size || | |
1272 | first->chunksize != second->chunksize || | |
1273 | first->raid_disks != second->raid_disks) | |
1274 | return 3; | |
1275 | return 0; | |
1276 | } | |
1277 | ||
3da92f27 | 1278 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 1279 | { |
5dd497ee | 1280 | unsigned long long dsize; |
82d9eba6 NB |
1281 | unsigned long long sb_offset; |
1282 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
1283 | int uuid[4]; |
1284 | struct bitmap_super_s *bsb; | |
bee8ec56 | 1285 | struct misc_dev_info *misc; |
308340aa | 1286 | struct align_fd afd; |
82d9eba6 | 1287 | |
3da92f27 | 1288 | free_super1(st); |
82d9eba6 | 1289 | |
308340aa JS |
1290 | init_afd(&afd, fd); |
1291 | ||
a17a3de3 | 1292 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 1293 | int bestvers = -1; |
23dc1ae8 | 1294 | struct supertype tst; |
570c0542 NB |
1295 | __u64 bestctime = 0; |
1296 | /* guess... choose latest ctime */ | |
ef609477 | 1297 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
1298 | tst.ss = &super1; |
1299 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
1300 | switch(load_super1(&tst, fd, devname)) { |
1301 | case 0: super = tst.sb; | |
570c0542 NB |
1302 | if (bestvers == -1 || |
1303 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 1304 | bestvers = tst.minor_version; |
570c0542 NB |
1305 | bestctime = __le64_to_cpu(super->ctime); |
1306 | } | |
1307 | free(super); | |
3da92f27 | 1308 | tst.sb = NULL; |
570c0542 | 1309 | break; |
23dc1ae8 | 1310 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
1311 | case 2: break; /* bad, try next */ |
1312 | } | |
1313 | } | |
570c0542 NB |
1314 | if (bestvers != -1) { |
1315 | int rv; | |
23dc1ae8 NB |
1316 | tst.minor_version = bestvers; |
1317 | tst.ss = &super1; | |
911cead7 | 1318 | tst.max_devs = MAX_DEVS; |
3da92f27 | 1319 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
1320 | if (rv == 0) |
1321 | *st = tst; | |
570c0542 NB |
1322 | return rv; |
1323 | } | |
82d9eba6 NB |
1324 | return 2; |
1325 | } | |
beae1dfe NB |
1326 | if (!get_dev_size(fd, devname, &dsize)) |
1327 | return 1; | |
1328 | dsize >>= 9; | |
82d9eba6 | 1329 | |
5dd497ee | 1330 | if (dsize < 24) { |
82d9eba6 | 1331 | if (devname) |
5dd497ee NB |
1332 | fprintf(stderr, Name ": %s is too small for md: size is %llu sectors.\n", |
1333 | devname, dsize); | |
82d9eba6 NB |
1334 | return 1; |
1335 | } | |
1336 | ||
1337 | /* | |
1338 | * Calculate the position of the superblock. | |
1339 | * It is always aligned to a 4K boundary and | |
14263cf1 | 1340 | * depending on minor_version, it can be: |
82d9eba6 NB |
1341 | * 0: At least 8K, but less than 12K, from end of device |
1342 | * 1: At start of device | |
1343 | * 2: 4K from start of device. | |
1344 | */ | |
1345 | switch(st->minor_version) { | |
1346 | case 0: | |
5dd497ee | 1347 | sb_offset = dsize; |
82d9eba6 NB |
1348 | sb_offset -= 8*2; |
1349 | sb_offset &= ~(4*2-1); | |
1350 | break; | |
1351 | case 1: | |
1352 | sb_offset = 0; | |
1353 | break; | |
1354 | case 2: | |
1355 | sb_offset = 4*2; | |
1356 | break; | |
1357 | default: | |
1358 | return -EINVAL; | |
1359 | } | |
1360 | ||
1361 | ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */ | |
1362 | ||
1363 | ||
1364 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { | |
1365 | if (devname) | |
1366 | fprintf(stderr, Name ": Cannot seek to superblock on %s: %s\n", | |
1367 | devname, strerror(errno)); | |
1368 | return 1; | |
1369 | } | |
1370 | ||
3c0bcd46 | 1371 | if (posix_memalign((void**)&super, 4096, SUPER1_SIZE) != 0) { |
3d2c4fc7 DW |
1372 | fprintf(stderr, Name ": %s could not allocate superblock\n", |
1373 | __func__); | |
1374 | return 1; | |
1375 | } | |
82d9eba6 | 1376 | |
308340aa | 1377 | if (aread(&afd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { |
82d9eba6 NB |
1378 | if (devname) |
1379 | fprintf(stderr, Name ": Cannot read superblock on %s\n", | |
1380 | devname); | |
1381 | free(super); | |
1382 | return 1; | |
1383 | } | |
1384 | ||
1385 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
1386 | if (devname) | |
1387 | fprintf(stderr, Name ": No super block found on %s (Expected magic %08x, got %08x)\n", | |
1388 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); | |
1389 | free(super); | |
1390 | return 2; | |
1391 | } | |
1392 | ||
1393 | if (__le32_to_cpu(super->major_version) != 1) { | |
1394 | if (devname) | |
1395 | fprintf(stderr, Name ": Cannot interpret superblock on %s - version is %d\n", | |
1396 | devname, __le32_to_cpu(super->major_version)); | |
1397 | free(super); | |
1398 | return 2; | |
1399 | } | |
1400 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
1401 | if (devname) | |
1402 | fprintf(stderr, Name ": No superblock found on %s (super_offset is wrong)\n", | |
1403 | devname); | |
1404 | free(super); | |
1405 | return 2; | |
1406 | } | |
64557c33 | 1407 | st->sb = super; |
14263cf1 | 1408 | |
911cead7 | 1409 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
bee8ec56 | 1410 | |
911cead7 | 1411 | misc = (struct misc_dev_info*) (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE); |
bee8ec56 NB |
1412 | misc->device_size = dsize; |
1413 | ||
14263cf1 NB |
1414 | /* Now check on the bitmap superblock */ |
1415 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
1416 | return 0; | |
1417 | /* Read the bitmap superblock and make sure it looks | |
1418 | * valid. If it doesn't clear the bit. An --assemble --force | |
1419 | * should get that written out. | |
1420 | */ | |
3da92f27 | 1421 | locate_bitmap1(st, fd); |
308340aa | 1422 | if (aread(&afd, bsb, 512) != 512) |
14263cf1 NB |
1423 | goto no_bitmap; |
1424 | ||
3da92f27 | 1425 | uuid_from_super1(st, uuid); |
14263cf1 NB |
1426 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
1427 | memcmp(bsb->uuid, uuid, 16) != 0) | |
1428 | goto no_bitmap; | |
1429 | return 0; | |
1430 | ||
1431 | no_bitmap: | |
c0c1acd6 N |
1432 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) |
1433 | & ~MD_FEATURE_BITMAP_OFFSET); | |
82d9eba6 NB |
1434 | return 0; |
1435 | } | |
1436 | ||
1437 | ||
1438 | static struct supertype *match_metadata_desc1(char *arg) | |
1439 | { | |
2de0b8a2 JS |
1440 | struct supertype *st = calloc(1, sizeof(*st)); |
1441 | if (!st) | |
1442 | return st; | |
82d9eba6 | 1443 | |
d1d599ea | 1444 | st->container_dev = NoMdDev; |
82d9eba6 | 1445 | st->ss = &super1; |
911cead7 | 1446 | st->max_devs = MAX_DEVS; |
64557c33 | 1447 | st->sb = NULL; |
9b2a22d3 N |
1448 | /* leading zeros can be safely ignored. --detail generates them. */ |
1449 | while (*arg == '0') | |
1450 | arg++; | |
1451 | if (strcmp(arg, "1.0") == 0 || | |
1452 | strcmp(arg, "1.00") == 0) { | |
82d9eba6 NB |
1453 | st->minor_version = 0; |
1454 | return st; | |
1455 | } | |
9b2a22d3 | 1456 | if (strcmp(arg, "1.1") == 0 || |
50827504 | 1457 | strcmp(arg, "1.01") == 0 |
7d5c3964 | 1458 | ) { |
82d9eba6 NB |
1459 | st->minor_version = 1; |
1460 | return st; | |
1461 | } | |
9b2a22d3 | 1462 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 1463 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 1464 | strcmp(arg, "default") == 0 || |
26f467a9 | 1465 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 1466 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
1467 | st->minor_version = 2; |
1468 | return st; | |
1469 | } | |
a17a3de3 | 1470 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 1471 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
1472 | st->minor_version = -1; |
1473 | return st; | |
1474 | } | |
82d9eba6 NB |
1475 | |
1476 | free(st); | |
1477 | return NULL; | |
1478 | } | |
1479 | ||
34163fc7 NB |
1480 | /* find available size on device with this devsize, using |
1481 | * superblock type st, and reserving 'reserve' sectors for | |
1482 | * a possible bitmap | |
1483 | */ | |
1bf4e2d9 | 1484 | static __u64 avail_size1(struct supertype *st, __u64 devsize) |
82d9eba6 | 1485 | { |
2a528478 | 1486 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
1487 | if (devsize < 24) |
1488 | return 0; | |
1489 | ||
2a528478 N |
1490 | if (super == NULL) |
1491 | /* creating: allow suitable space for bitmap */ | |
1492 | devsize -= choose_bm_space(devsize); | |
1493 | #ifndef MDASSEMBLE | |
1494 | else if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) { | |
1495 | /* hot-add. allow for actual size of bitmap */ | |
1496 | struct bitmap_super_s *bsb; | |
911cead7 | 1497 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
2a528478 N |
1498 | devsize -= bitmap_sectors(bsb); |
1499 | } | |
1500 | #endif | |
21e92547 | 1501 | |
a380e275 N |
1502 | if (st->minor_version < 0) |
1503 | /* not specified, so time to set default */ | |
1504 | st->minor_version = 2; | |
1505 | if (super == NULL && st->minor_version > 0) { | |
1506 | /* haven't committed to a size yet, so allow some | |
1507 | * slack for alignment of data_offset. | |
1508 | * We haven't access to device details so allow | |
1509 | * 1 Meg if bigger than 1Gig | |
1510 | */ | |
1511 | if (devsize > 1024*1024*2) | |
1512 | devsize -= 1024*2; | |
1513 | } | |
34163fc7 NB |
1514 | switch(st->minor_version) { |
1515 | case 0: | |
1bf4e2d9 NB |
1516 | /* at end */ |
1517 | return ((devsize - 8*2 ) & ~(4*2-1)); | |
34163fc7 | 1518 | case 1: |
1bf4e2d9 NB |
1519 | /* at start, 4K for superblock and possible bitmap */ |
1520 | return devsize - 4*2; | |
34163fc7 | 1521 | case 2: |
1bf4e2d9 NB |
1522 | /* 4k from start, 4K for superblock and possible bitmap */ |
1523 | return devsize - (4+4)*2; | |
34163fc7 NB |
1524 | } |
1525 | return 0; | |
1526 | } | |
1527 | ||
1bf4e2d9 | 1528 | static int |
3da92f27 | 1529 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
1530 | int *chunkp, int delay, int write_behind, |
1531 | unsigned long long size, | |
21e92547 | 1532 | int may_change, int major) |
34163fc7 NB |
1533 | { |
1534 | /* | |
c0c1acd6 N |
1535 | * If not may_change, then this is a 'Grow' without sysfs support for |
1536 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
1537 | * If may_change, then this is create or a Grow with sysfs syupport, | |
1538 | * and we can put the bitmap wherever we like. | |
34163fc7 | 1539 | * |
f9c25f1d | 1540 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
1541 | */ |
1542 | ||
1bf4e2d9 | 1543 | unsigned long long bits; |
199171a2 | 1544 | unsigned long long max_bits; |
34163fc7 | 1545 | unsigned long long min_chunk; |
199171a2 | 1546 | long offset; |
f21e18ca | 1547 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 1548 | int room = 0; |
c0c1acd6 | 1549 | int creating = 0; |
3da92f27 | 1550 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 1551 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
3b7e9d0c | 1552 | int uuid[4]; |
34163fc7 | 1553 | |
c0c1acd6 N |
1554 | if (__le64_to_cpu(sb->data_size) == 0) |
1555 | /* Must be creating the array, else data_size would be non-zero */ | |
1556 | creating = 1; | |
199171a2 NB |
1557 | switch(st->minor_version) { |
1558 | case 0: | |
a31128d2 N |
1559 | /* either 3K after the superblock (when hot-add), |
1560 | * or some amount of space before. | |
199171a2 | 1561 | */ |
c0c1acd6 | 1562 | if (creating) { |
199171a2 NB |
1563 | /* We are creating array, so we *know* how much room has |
1564 | * been left. | |
1565 | */ | |
1566 | offset = 0; | |
2fb749d1 | 1567 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
199171a2 NB |
1568 | } else { |
1569 | room = __le64_to_cpu(sb->super_offset) | |
1570 | - __le64_to_cpu(sb->data_offset) | |
1571 | - __le64_to_cpu(sb->data_size); | |
c0c1acd6 N |
1572 | |
1573 | if (!may_change || (room < 3*2 && | |
199171a2 NB |
1574 | __le32_to_cpu(sb->max_dev) <= 384)) { |
1575 | room = 3*2; | |
1576 | offset = 1*2; | |
1577 | } else { | |
1578 | offset = 0; /* means movable offset */ | |
1579 | } | |
1580 | } | |
1581 | break; | |
1582 | case 1: | |
1583 | case 2: /* between superblock and data */ | |
c0c1acd6 | 1584 | if (creating) { |
199171a2 | 1585 | offset = 4*2; |
2fb749d1 | 1586 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
199171a2 NB |
1587 | } else { |
1588 | room = __le64_to_cpu(sb->data_offset) | |
1589 | - __le64_to_cpu(sb->super_offset); | |
c0c1acd6 N |
1590 | if (!may_change) { |
1591 | room -= 2; /* Leave 1K for superblock */ | |
199171a2 NB |
1592 | offset = 2; |
1593 | } else { | |
c0c1acd6 | 1594 | room -= 4*2; /* leave 4K for superblock */ |
199171a2 NB |
1595 | offset = 4*2; |
1596 | } | |
1597 | } | |
1598 | break; | |
ae491d1e NB |
1599 | default: |
1600 | return 0; | |
199171a2 | 1601 | } |
1bf4e2d9 | 1602 | |
199171a2 NB |
1603 | if (chunk == UnSet && room > 128*2) |
1604 | /* Limit to 128K of bitmap when chunk size not requested */ | |
1605 | room = 128*2; | |
1bf4e2d9 | 1606 | |
199171a2 | 1607 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
1608 | |
1609 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 1610 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
1611 | while (bits > max_bits) { |
1612 | min_chunk *= 2; | |
1613 | bits = (bits+1)/2; | |
1614 | } | |
b8ab2a50 N |
1615 | if (chunk == UnSet) { |
1616 | /* For practical purpose, 64Meg is a good | |
1617 | * default chunk size for internal bitmaps. | |
1618 | */ | |
34163fc7 | 1619 | chunk = min_chunk; |
b8ab2a50 N |
1620 | if (chunk < 64*1024*1024) |
1621 | chunk = 64*1024*1024; | |
1622 | } else if (chunk < min_chunk) | |
34163fc7 | 1623 | return 0; /* chunk size too small */ |
21e92547 NB |
1624 | if (chunk == 0) /* rounding problem */ |
1625 | return 0; | |
34163fc7 | 1626 | |
199171a2 | 1627 | if (offset == 0) { |
a31128d2 N |
1628 | /* start bitmap on a 4K boundary with enough space for |
1629 | * the bitmap | |
1630 | */ | |
199171a2 | 1631 | bits = (size*512) / chunk + 1; |
a31128d2 N |
1632 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
1633 | room *= 8; /* convert 4K blocks to sectors */ | |
199171a2 NB |
1634 | offset = -room; |
1635 | } | |
1636 | ||
1637 | sb->bitmap_offset = __cpu_to_le32(offset); | |
34163fc7 | 1638 | |
c0c1acd6 N |
1639 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) |
1640 | | MD_FEATURE_BITMAP_OFFSET); | |
29e766a5 | 1641 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 1642 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 1643 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
1644 | uuid_from_super1(st, uuid); |
1645 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
1646 | bms->chunksize = __cpu_to_le32(chunk); |
1647 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 1648 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 NB |
1649 | bms->write_behind = __cpu_to_le32(write_behind); |
1650 | ||
199171a2 | 1651 | *chunkp = chunk; |
34163fc7 NB |
1652 | return 1; |
1653 | } | |
1654 | ||
3da92f27 | 1655 | static void locate_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1656 | { |
34163fc7 | 1657 | unsigned long long offset; |
1e0d770c NB |
1658 | struct mdp_superblock_1 *sb; |
1659 | int mustfree = 0; | |
34163fc7 | 1660 | |
3da92f27 NB |
1661 | if (!st->sb) { |
1662 | if (st->ss->load_super(st, fd, NULL)) | |
f6d75de8 | 1663 | return; /* no error I hope... */ |
1e0d770c NB |
1664 | mustfree = 1; |
1665 | } | |
3da92f27 | 1666 | sb = st->sb; |
e478dc86 | 1667 | |
1bf4e2d9 | 1668 | offset = __le64_to_cpu(sb->super_offset); |
68754bd1 | 1669 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset); |
1e0d770c | 1670 | if (mustfree) |
f6d75de8 | 1671 | free(sb); |
1bf4e2d9 | 1672 | lseek64(fd, offset<<9, 0); |
34163fc7 NB |
1673 | } |
1674 | ||
3da92f27 | 1675 | static int write_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1676 | { |
3da92f27 | 1677 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 1678 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
34163fc7 | 1679 | int rv = 0; |
d669228f | 1680 | void *buf; |
34163fc7 | 1681 | int towrite, n; |
308340aa JS |
1682 | struct align_fd afd; |
1683 | ||
1684 | init_afd(&afd, fd); | |
34163fc7 | 1685 | |
3da92f27 | 1686 | locate_bitmap1(st, fd); |
34163fc7 | 1687 | |
d669228f JS |
1688 | if (posix_memalign(&buf, 4096, 4096)) |
1689 | return -ENOMEM; | |
1690 | ||
6416d527 | 1691 | memset(buf, 0xff, 4096); |
b2bfdfa0 | 1692 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); |
6416d527 | 1693 | |
1bf4e2d9 NB |
1694 | towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9); |
1695 | towrite = (towrite+7) >> 3; /* bits to bytes */ | |
6416d527 NB |
1696 | towrite += sizeof(bitmap_super_t); |
1697 | towrite = ROUND_UP(towrite, 512); | |
34163fc7 NB |
1698 | while (towrite > 0) { |
1699 | n = towrite; | |
6416d527 NB |
1700 | if (n > 4096) |
1701 | n = 4096; | |
308340aa | 1702 | n = awrite(&afd, buf, n); |
34163fc7 NB |
1703 | if (n > 0) |
1704 | towrite -= n; | |
1705 | else | |
1706 | break; | |
6416d527 | 1707 | memset(buf, 0xff, 4096); |
34163fc7 NB |
1708 | } |
1709 | fsync(fd); | |
1710 | if (towrite) | |
1711 | rv = -2; | |
1712 | ||
d669228f | 1713 | free(buf); |
34163fc7 | 1714 | return rv; |
82d9eba6 NB |
1715 | } |
1716 | ||
3da92f27 | 1717 | static void free_super1(struct supertype *st) |
df37ffc0 | 1718 | { |
3da92f27 NB |
1719 | if (st->sb) |
1720 | free(st->sb); | |
1cc7f4fe N |
1721 | while (st->info) { |
1722 | struct devinfo *di = st->info; | |
1723 | st->info = di->next; | |
1724 | if (di->fd >= 0) | |
1725 | close(di->fd); | |
1726 | free(di); | |
1727 | } | |
3da92f27 | 1728 | st->sb = NULL; |
df37ffc0 NB |
1729 | } |
1730 | ||
0e600426 | 1731 | #ifndef MDASSEMBLE |
17f25ca6 NB |
1732 | static int validate_geometry1(struct supertype *st, int level, |
1733 | int layout, int raiddisks, | |
c21e737b | 1734 | int *chunk, unsigned long long size, |
2c514b71 NB |
1735 | char *subdev, unsigned long long *freesize, |
1736 | int verbose) | |
17f25ca6 NB |
1737 | { |
1738 | unsigned long long ldsize; | |
1739 | int fd; | |
1740 | ||
b42f577a N |
1741 | if (level == LEVEL_CONTAINER) { |
1742 | if (verbose) | |
1743 | fprintf(stderr, Name ": 1.x metadata does not support containers\n"); | |
17f25ca6 | 1744 | return 0; |
b42f577a | 1745 | } |
bb7295f1 N |
1746 | if (chunk && *chunk == UnSet) |
1747 | *chunk = DEFAULT_CHUNK; | |
1748 | ||
17f25ca6 NB |
1749 | if (!subdev) |
1750 | return 1; | |
1751 | ||
1752 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
1753 | if (fd < 0) { | |
2c514b71 NB |
1754 | if (verbose) |
1755 | fprintf(stderr, Name ": super1.x cannot open %s: %s\n", | |
1756 | subdev, strerror(errno)); | |
17f25ca6 NB |
1757 | return 0; |
1758 | } | |
2c514b71 | 1759 | |
17f25ca6 NB |
1760 | if (!get_dev_size(fd, subdev, &ldsize)) { |
1761 | close(fd); | |
1762 | return 0; | |
1763 | } | |
1764 | close(fd); | |
1765 | ||
1766 | *freesize = avail_size1(st, ldsize >> 9); | |
1767 | return 1; | |
1768 | } | |
0e600426 | 1769 | #endif /* MDASSEMBLE */ |
17f25ca6 | 1770 | |
82d9eba6 | 1771 | struct superswitch super1 = { |
c7654afc | 1772 | #ifndef MDASSEMBLE |
82d9eba6 NB |
1773 | .examine_super = examine_super1, |
1774 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 1775 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
1776 | .detail_super = detail_super1, |
1777 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 1778 | .export_detail_super = export_detail_super1, |
111d01fc | 1779 | .write_init_super = write_init_super1, |
0e600426 N |
1780 | .validate_geometry = validate_geometry1, |
1781 | .add_to_super = add_to_super1, | |
c7654afc | 1782 | #endif |
83b6208e | 1783 | .match_home = match_home1, |
82d9eba6 NB |
1784 | .uuid_from_super = uuid_from_super1, |
1785 | .getinfo_super = getinfo_super1, | |
00bbdbda | 1786 | .container_content = container_content1, |
82d9eba6 | 1787 | .update_super = update_super1, |
82d9eba6 | 1788 | .init_super = init_super1, |
82d9eba6 | 1789 | .store_super = store_super1, |
82d9eba6 NB |
1790 | .compare_super = compare_super1, |
1791 | .load_super = load_super1, | |
1792 | .match_metadata_desc = match_metadata_desc1, | |
1793 | .avail_size = avail_size1, | |
34163fc7 NB |
1794 | .add_internal_bitmap = add_internal_bitmap1, |
1795 | .locate_bitmap = locate_bitmap1, | |
1796 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 1797 | .free_super = free_super1, |
f277ce36 NB |
1798 | #if __BYTE_ORDER == BIG_ENDIAN |
1799 | .swapuuid = 0, | |
1800 | #else | |
1801 | .swapuuid = 1, | |
1802 | #endif | |
31015d57 | 1803 | .name = "1.x", |
82d9eba6 | 1804 | }; |