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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) | |
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; | |
82d9eba6 NB |
119 | |
120 | /* make sure I can count... */ | |
121 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
122 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
123 | sizeof(struct mdp_superblock_1) != 256) { | |
124 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
125 | } | |
126 | ||
127 | disk_csum = sb->sb_csum; | |
128 | sb->sb_csum = 0; | |
129 | newcsum = 0; | |
e4c72d1d | 130 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
131 | newcsum += __le32_to_cpu(*isuper); |
132 | isuper++; | |
133 | } | |
82d9eba6 NB |
134 | |
135 | if (size == 2) | |
136 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
137 | ||
138 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
139 | sb->sb_csum = disk_csum; | |
83205b64 | 140 | return __cpu_to_le32(csum); |
82d9eba6 NB |
141 | } |
142 | ||
5ea022a1 N |
143 | static char abuf[4096+4096]; |
144 | static int aread(int fd, void *buf, int len) | |
145 | { | |
146 | /* aligned read. | |
147 | * On devices with a 4K sector size, we need to read | |
148 | * the full sector and copy relevant bits into | |
149 | * the buffer | |
150 | */ | |
6ef89052 | 151 | int bsize, iosize; |
5ea022a1 N |
152 | char *b; |
153 | int n; | |
6ef89052 N |
154 | if (ioctl(fd, BLKSSZGET, &bsize) != 0) |
155 | bsize = 512; | |
156 | ||
157 | if (bsize > 4096 || len > 4096) | |
5ea022a1 N |
158 | return -1; |
159 | b = (char*)(((long)(abuf+4096))&~4095UL); | |
160 | ||
6ef89052 N |
161 | for (iosize = 0; iosize < len; iosize += bsize) |
162 | ; | |
163 | n = read(fd, b, iosize); | |
5ea022a1 N |
164 | if (n <= 0) |
165 | return n; | |
166 | lseek(fd, len - n, 1); | |
167 | if (n > len) | |
168 | n = len; | |
169 | memcpy(buf, b, n); | |
170 | return n; | |
171 | } | |
172 | ||
173 | static int awrite(int fd, void *buf, int len) | |
174 | { | |
175 | /* aligned write. | |
176 | * On devices with a 4K sector size, we need to write | |
177 | * the full sector. We pre-read if the sector is larger | |
178 | * than the write. | |
179 | * The address must be sector-aligned. | |
180 | */ | |
6ef89052 | 181 | int bsize, iosize; |
5ea022a1 N |
182 | char *b; |
183 | int n; | |
6ef89052 N |
184 | if (ioctl(fd, BLKSSZGET, &bsize) != 0) |
185 | bsize = 512; | |
186 | if (bsize > 4096 || len > 4096) | |
5ea022a1 N |
187 | return -1; |
188 | b = (char*)(((long)(abuf+4096))&~4095UL); | |
189 | ||
6ef89052 N |
190 | for (iosize = 0; iosize < len ; iosize += bsize) |
191 | ; | |
192 | ||
193 | if (len != iosize) { | |
194 | n = read(fd, b, iosize); | |
195 | if (n <= 0) | |
196 | return n; | |
197 | lseek(fd, -n, 1); | |
198 | } | |
199 | ||
5ea022a1 | 200 | memcpy(b, buf, len); |
6ef89052 | 201 | n = write(fd, b, iosize); |
5ea022a1 N |
202 | if (n <= 0) |
203 | return n; | |
204 | lseek(fd, len - n, 1); | |
205 | return len; | |
206 | } | |
207 | ||
c7654afc | 208 | #ifndef MDASSEMBLE |
3da92f27 | 209 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 210 | { |
3da92f27 | 211 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 212 | time_t atime; |
f21e18ca | 213 | unsigned int d; |
e8e1c176 | 214 | int role; |
4180aa4d | 215 | int delta_extra = 0; |
82d9eba6 NB |
216 | int i; |
217 | char *c; | |
a1cbd7d0 | 218 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 219 | int layout; |
a17a3de3 | 220 | unsigned long long sb_offset; |
82d9eba6 NB |
221 | |
222 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
223 | printf(" Version : 1"); |
224 | sb_offset = __le64_to_cpu(sb->super_offset); | |
225 | if (sb_offset <= 4) | |
226 | printf(".1\n"); | |
227 | else if (sb_offset <= 8) | |
228 | printf(".2\n"); | |
229 | else | |
230 | printf(".0\n"); | |
91eedefc | 231 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
232 | printf(" Array UUID : "); |
233 | for (i=0; i<16; i++) { | |
82d9eba6 | 234 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 235 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
236 | } |
237 | printf("\n"); | |
a1cbd7d0 NB |
238 | printf(" Name : %.32s", sb->set_name); |
239 | if (l > 0 && l < 32 && | |
240 | sb->set_name[l] == ':' && | |
241 | strncmp(sb->set_name, homehost, l) == 0) | |
242 | printf(" (local to host %s)", homehost); | |
243 | printf("\n"); | |
82d9eba6 NB |
244 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
245 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
246 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
247 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
248 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
249 | printf("\n"); | |
5cda0964 | 250 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
251 | (unsigned long long)__le64_to_cpu(sb->data_size), |
252 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 253 | if (__le32_to_cpu(sb->level) > 0) { |
b674b5b8 NB |
254 | int ddsks=0; |
255 | switch(__le32_to_cpu(sb->level)) { | |
256 | case 1: ddsks=1;break; | |
257 | case 4: | |
83205b64 NB |
258 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
259 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
260 | case 10: | |
261 | layout = __le32_to_cpu(sb->layout); | |
262 | ddsks = __le32_to_cpu(sb->raid_disks) | |
263 | / (layout&255) / ((layout>>8)&255); | |
b674b5b8 NB |
264 | } |
265 | if (ddsks) | |
83205b64 | 266 | printf(" Array Size : %llu%s\n", |
c1c05f7f | 267 | ddsks*(unsigned long long)__le64_to_cpu(sb->size), |
83205b64 | 268 | human_size(ddsks*__le64_to_cpu(sb->size)<<9)); |
b674b5b8 | 269 | if (sb->size != sb->data_size) |
5cda0964 | 270 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
271 | (unsigned long long)__le64_to_cpu(sb->size), |
272 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 273 | } |
82d9eba6 | 274 | if (sb->data_offset) |
199171a2 NB |
275 | printf(" Data Offset : %llu sectors\n", |
276 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
277 | printf(" Super Offset : %llu sectors\n", | |
278 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc NB |
279 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
280 | printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
a3fd117c | 281 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
282 | printf(" Device UUID : "); |
283 | for (i=0; i<16; i++) { | |
82d9eba6 | 284 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 285 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
286 | } |
287 | printf("\n"); | |
b674b5b8 | 288 | printf("\n"); |
91eedefc NB |
289 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
290 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 291 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
8fac0577 | 292 | } |
b674b5b8 | 293 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 294 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
295 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
296 | if (__le32_to_cpu(sb->delta_disks)) { | |
297 | printf(" Delta Devices : %d", __le32_to_cpu(sb->delta_disks)); | |
4180aa4d N |
298 | printf(" (%d->%d)\n", |
299 | __le32_to_cpu(sb->raid_disks)-__le32_to_cpu(sb->delta_disks), | |
300 | __le32_to_cpu(sb->raid_disks)); | |
301 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
302 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
303 | } |
304 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
305 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
306 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
307 | } | |
308 | if (__le32_to_cpu(sb->new_layout) != __le32_to_cpu(sb->layout)) { | |
309 | if (__le32_to_cpu(sb->level) == 5) { | |
310 | c = map_num(r5layout, __le32_to_cpu(sb->new_layout)); | |
311 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
312 | } | |
fe77a154 N |
313 | if (__le32_to_cpu(sb->level) == 6) { |
314 | c = map_num(r6layout, __le32_to_cpu(sb->new_layout)); | |
315 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
316 | } | |
b674b5b8 | 317 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
318 | printf(" New Layout :"); |
319 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
320 | printf("\n"); | |
b674b5b8 NB |
321 | } |
322 | } | |
323 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
324 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
325 | printf("\n"); | |
326 | } | |
dfd4d8ee | 327 | if (sb->devflags) { |
62184891 | 328 | printf(" Flags :"); |
34163fc7 | 329 | if (sb->devflags & WriteMostly1) |
dfd4d8ee NB |
330 | printf(" write-mostly"); |
331 | printf("\n"); | |
332 | } | |
82d9eba6 NB |
333 | |
334 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
335 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
336 | ||
337 | if (calc_sb_1_csum(sb) == sb->sb_csum) | |
338 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
339 | else | |
340 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
341 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 342 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
343 | printf("\n"); |
344 | if (__le32_to_cpu(sb->level) == 5) { | |
345 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
346 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
347 | } | |
fe77a154 N |
348 | if (__le32_to_cpu(sb->level) == 6) { |
349 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
350 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
351 | } | |
265e0f17 NB |
352 | if (__le32_to_cpu(sb->level) == 10) { |
353 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
354 | printf(" Layout :"); |
355 | print_r10_layout(lo); | |
356 | printf("\n"); | |
265e0f17 | 357 | } |
82d9eba6 NB |
358 | switch(__le32_to_cpu(sb->level)) { |
359 | case 0: | |
360 | case 4: | |
361 | case 5: | |
d2cd3ffc NB |
362 | case 6: |
363 | case 10: | |
b674b5b8 | 364 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
365 | break; |
366 | case -1: | |
b674b5b8 | 367 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
368 | break; |
369 | default: break; | |
370 | } | |
371 | printf("\n"); | |
e8e1c176 N |
372 | #if 0 |
373 | /* This turns out to just be confusing */ | |
c3684618 NB |
374 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
375 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
376 | if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff) | |
377 | break; | |
378 | for (d=0; d < i; d++) { | |
379 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
380 | if (d) printf(", "); | |
381 | if (role == 0xffff) printf("empty"); | |
382 | else if(role == 0xfffe) printf("failed"); | |
383 | else printf("%d", role); | |
384 | } | |
385 | printf(")\n"); | |
e8e1c176 N |
386 | #endif |
387 | printf(" Device Role : "); | |
388 | d = __le32_to_cpu(sb->dev_number); | |
4180aa4d | 389 | if (d < __le32_to_cpu(sb->max_dev)) |
e8e1c176 N |
390 | role = __le16_to_cpu(sb->dev_roles[d]); |
391 | else | |
392 | role = 0xFFFF; | |
393 | if (role >= 0xFFFE) | |
394 | printf("spare\n"); | |
395 | else | |
396 | printf("Active device %d\n", role); | |
397 | ||
82d9eba6 | 398 | printf(" Array State : "); |
4180aa4d | 399 | for (d=0; d<__le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 400 | int cnt = 0; |
f21e18ca | 401 | unsigned int i; |
82d9eba6 | 402 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 403 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 404 | if (role == d) |
82d9eba6 | 405 | cnt++; |
82d9eba6 NB |
406 | } |
407 | if (cnt > 1) printf("?"); | |
e8e1c176 N |
408 | else if (cnt == 1) printf("A"); |
409 | else printf ("."); | |
82d9eba6 | 410 | } |
e8e1c176 N |
411 | #if 0 |
412 | /* This is confusing too */ | |
6fbba4c9 | 413 | faulty = 0; |
82d9eba6 NB |
414 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
415 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
6fbba4c9 NB |
416 | if (role == 0xFFFE) |
417 | faulty++; | |
82d9eba6 | 418 | } |
82d9eba6 | 419 | if (faulty) printf(" %d failed", faulty); |
e8e1c176 N |
420 | #endif |
421 | printf(" ('A' == active, '.' == missing)"); | |
82d9eba6 NB |
422 | printf("\n"); |
423 | } | |
424 | ||
425 | ||
061f2c6a | 426 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 427 | { |
3da92f27 | 428 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 429 | int i; |
a17a3de3 | 430 | unsigned long long sb_offset; |
2998bc01 | 431 | char *nm; |
b015e6c2 | 432 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
433 | |
434 | nm = strchr(sb->set_name, ':'); | |
435 | if (nm) | |
436 | nm++; | |
437 | else if (sb->set_name[0]) | |
438 | nm = sb->set_name; | |
439 | else | |
cf8de691 | 440 | nm = NULL; |
82d9eba6 | 441 | |
061f2c6a N |
442 | printf("ARRAY%s%s", nm ? " /dev/md/":"", nm); |
443 | if (verbose && c) | |
444 | printf(" level=%s", c); | |
a17a3de3 DL |
445 | sb_offset = __le64_to_cpu(sb->super_offset); |
446 | if (sb_offset <= 4) | |
e9a0e728 | 447 | printf(" metadata=1.1 "); |
a17a3de3 | 448 | else if (sb_offset <= 8) |
e9a0e728 | 449 | printf(" metadata=1.2 "); |
a17a3de3 | 450 | else |
e9a0e728 | 451 | printf(" metadata=1.0 "); |
061f2c6a N |
452 | if (verbose) |
453 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
454 | printf("UUID="); | |
82d9eba6 | 455 | for (i=0; i<16; i++) { |
82d9eba6 | 456 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 457 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 458 | } |
947fd4dd NB |
459 | if (sb->set_name[0]) |
460 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
461 | printf("\n"); |
462 | } | |
463 | ||
0d726f17 KS |
464 | static void export_examine_super1(struct supertype *st) |
465 | { | |
466 | struct mdp_superblock_1 *sb = st->sb; | |
467 | int i; | |
468 | int len = 32; | |
469 | ||
470 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
471 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
472 | for (i=0; i<32; i++) | |
473 | if (sb->set_name[i] == '\n' || | |
474 | sb->set_name[i] == '\0') { | |
475 | len = i; | |
476 | break; | |
477 | } | |
478 | if (len) | |
479 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
480 | printf("MD_UUID="); | |
481 | for (i=0; i<16; i++) { | |
482 | if ((i&3)==0 && i != 0) printf(":"); | |
483 | printf("%02x", sb->set_uuid[i]); | |
484 | } | |
485 | printf("\n"); | |
486 | printf("MD_UPDATE_TIME=%llu\n", | |
487 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
488 | printf("MD_DEV_UUID="); | |
489 | for (i=0; i<16; i++) { | |
490 | if ((i&3)==0 && i != 0) printf(":"); | |
491 | printf("%02x", sb->device_uuid[i]); | |
492 | } | |
493 | printf("\n"); | |
494 | printf("MD_EVENTS=%llu\n", | |
495 | (unsigned long long)__le64_to_cpu(sb->events)); | |
496 | } | |
497 | ||
3da92f27 | 498 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 499 | { |
3da92f27 | 500 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 501 | int i; |
b6750aa8 | 502 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 503 | |
b6750aa8 NB |
504 | printf(" Name : %.32s", sb->set_name); |
505 | if (l > 0 && l < 32 && | |
506 | sb->set_name[l] == ':' && | |
507 | strncmp(sb->set_name, homehost, l) == 0) | |
508 | printf(" (local to host %s)", homehost); | |
509 | printf("\n UUID : "); | |
82d9eba6 | 510 | for (i=0; i<16; i++) { |
82d9eba6 | 511 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 512 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 513 | } |
570c0542 | 514 | printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
515 | } |
516 | ||
3da92f27 | 517 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 518 | { |
3da92f27 | 519 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
520 | int i; |
521 | ||
947fd4dd NB |
522 | if (sb->set_name[0]) |
523 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
524 | printf(" UUID="); |
525 | for (i=0; i<16; i++) { | |
82d9eba6 | 526 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 527 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
528 | } |
529 | } | |
530 | ||
0d726f17 | 531 | static void export_detail_super1(struct supertype *st) |
54bad364 | 532 | { |
3da92f27 | 533 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
534 | int i; |
535 | int len = 32; | |
536 | ||
537 | for (i=0; i<32; i++) | |
538 | if (sb->set_name[i] == '\n' || | |
539 | sb->set_name[i] == '\0') { | |
540 | len = i; | |
541 | break; | |
542 | } | |
543 | if (len) | |
544 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
545 | } |
546 | ||
c7654afc NB |
547 | #endif |
548 | ||
3da92f27 | 549 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 550 | { |
3da92f27 | 551 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
552 | int l = homehost ? strlen(homehost) : 0; |
553 | ||
554 | return (l > 0 && l < 32 && | |
555 | sb->set_name[l] == ':' && | |
556 | strncmp(sb->set_name, homehost, l) == 0); | |
557 | } | |
558 | ||
3da92f27 | 559 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 560 | { |
3da92f27 | 561 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
562 | char *cuuid = (char*)uuid; |
563 | int i; | |
564 | for (i=0; i<16; i++) | |
565 | cuuid[i] = super->set_uuid[i]; | |
566 | } | |
567 | ||
a5d85af7 | 568 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 569 | { |
3da92f27 | 570 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 571 | int working = 0; |
f21e18ca | 572 | unsigned int i; |
a5d85af7 N |
573 | unsigned int role; |
574 | unsigned int map_disks = info->array.raid_disks; | |
82d9eba6 | 575 | |
95eeceeb | 576 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 577 | info->array.major_version = 1; |
b8ac1967 | 578 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
579 | info->array.patch_version = 0; |
580 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
581 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 582 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
583 | info->array.md_minor = -1; |
584 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 585 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 586 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c | 587 | info->array.state = |
d5977056 | 588 | (__le64_to_cpu(sb->resync_offset) == MaxSector) |
4855f95c | 589 | ? 1 : 0; |
353632d9 NB |
590 | |
591 | info->data_offset = __le64_to_cpu(sb->data_offset); | |
592 | info->component_size = __le64_to_cpu(sb->size); | |
c0c1acd6 N |
593 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) |
594 | info->bitmap_offset = __le32_to_cpu(sb->bitmap_offset); | |
82d9eba6 NB |
595 | |
596 | info->disk.major = 0; | |
597 | info->disk.minor = 0; | |
fbf8a0b7 | 598 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 | 599 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
911cead7 | 600 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) |
82d9eba6 NB |
601 | role = 0xfffe; |
602 | else | |
603 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
604 | ||
605 | info->disk.raid_disk = -1; | |
606 | switch(role) { | |
607 | case 0xFFFF: | |
f22385f9 | 608 | info->disk.state = 0; /* spare: not active, not sync, not faulty */ |
82d9eba6 NB |
609 | break; |
610 | case 0xFFFE: | |
611 | info->disk.state = 1; /* faulty */ | |
612 | break; | |
613 | default: | |
614 | info->disk.state = 6; /* active and in sync */ | |
615 | info->disk.raid_disk = role; | |
616 | } | |
cb099724 N |
617 | if (sb->devflags & WriteMostly1) |
618 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
82d9eba6 | 619 | info->events = __le64_to_cpu(sb->events); |
1522c538 | 620 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 621 | info->safe_mode_delay = 200; |
82d9eba6 NB |
622 | |
623 | memcpy(info->uuid, sb->set_uuid, 16); | |
624 | ||
31317663 NB |
625 | strncpy(info->name, sb->set_name, 32); |
626 | info->name[32] = 0; | |
947fd4dd | 627 | |
921d9e16 N |
628 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
629 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
630 | else | |
631 | info->recovery_start = MaxSector; | |
632 | ||
353632d9 NB |
633 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
634 | info->reshape_active = 1; | |
635 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); | |
636 | info->new_level = __le32_to_cpu(sb->new_level); | |
637 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
638 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 639 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
640 | if (info->delta_disks < 0) |
641 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
642 | } else |
643 | info->reshape_active = 0; | |
644 | ||
6e75048b AK |
645 | info->recovery_blocked = info->reshape_active; |
646 | ||
a5d85af7 N |
647 | if (map) |
648 | for (i=0; i<map_disks; i++) | |
649 | map[i] = 0; | |
f21e18ca | 650 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 651 | role = __le16_to_cpu(sb->dev_roles[i]); |
a5d85af7 | 652 | if (/*role == 0xFFFF || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 653 | working++; |
a5d85af7 N |
654 | if (map && role < map_disks) |
655 | map[role] = 1; | |
656 | } | |
82d9eba6 NB |
657 | } |
658 | ||
659 | info->array.working_disks = working; | |
660 | } | |
661 | ||
00bbdbda N |
662 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
663 | { | |
664 | struct mdinfo *info; | |
665 | ||
666 | if (subarray) | |
667 | return NULL; | |
668 | ||
669 | info = malloc(sizeof(*info)); | |
670 | getinfo_super1(st, info, NULL); | |
671 | return info; | |
672 | } | |
673 | ||
68c7d6d7 | 674 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 675 | char *update, |
e5eac01f NB |
676 | char *devname, int verbose, |
677 | int uuid_set, char *homehost) | |
82d9eba6 | 678 | { |
5a31170d N |
679 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
680 | * if any change was made. For others, the return value is | |
681 | * ignored. | |
c4d831e1 | 682 | */ |
82d9eba6 | 683 | int rv = 0; |
3da92f27 | 684 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 685 | |
67a8c82d NB |
686 | if (strcmp(update, "force-one")==0) { |
687 | /* Not enough devices for a working array, | |
688 | * so bring this one up-to-date | |
689 | */ | |
c4d831e1 NB |
690 | if (sb->events != __cpu_to_le64(info->events)) |
691 | rv = 1; | |
6d3d5804 | 692 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 693 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
694 | /* Degraded array and 'force' requests to |
695 | * maybe need to mark it 'clean'. | |
696 | */ | |
82d9eba6 NB |
697 | switch(__le32_to_cpu(sb->level)) { |
698 | case 5: case 4: case 6: | |
699 | /* need to force clean */ | |
b7528a20 | 700 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 701 | rv = 1; |
b7528a20 | 702 | sb->resync_offset = MaxSector; |
82d9eba6 | 703 | } |
1e2b2765 | 704 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
705 | int d = info->disk.number; |
706 | int want; | |
707 | if (info->disk.state == 6) | |
a2ce5a1a | 708 | want = info->disk.raid_disk; |
82d9eba6 NB |
709 | else |
710 | want = 0xFFFF; | |
a2ce5a1a N |
711 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
712 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
713 | rv = 1; |
714 | } | |
d43494fc N |
715 | if (info->reshape_active && |
716 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
717 | info->delta_disks >= 0 && | |
718 | info->reshape_progress < __le64_to_cpu(sb->reshape_position)) { | |
719 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
720 | rv = 1; | |
721 | } | |
722 | if (info->reshape_active && | |
723 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
724 | info->delta_disks < 0 && | |
725 | info->reshape_progress > __le64_to_cpu(sb->reshape_position)) { | |
726 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
727 | rv = 1; | |
728 | } | |
1e2b2765 | 729 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 730 | unsigned int i; |
1c6cb603 | 731 | int rfd, fd; |
f21e18ca | 732 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f NB |
733 | |
734 | for (i=0 ; i < max ; i++) | |
735 | if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe) | |
736 | break; | |
737 | sb->dev_number = __cpu_to_le32(i); | |
738 | info->disk.number = i; | |
739 | if (max >= __le32_to_cpu(sb->max_dev)) | |
740 | sb->max_dev = __cpu_to_le32(max+1); | |
741 | ||
742 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
743 | read(rfd, sb->device_uuid, 16) != 16) { | |
caa0f6c6 N |
744 | __u32 r[4] = {random(), random(), random(), random()}; |
745 | memcpy(sb->device_uuid, r, 16); | |
f752781f | 746 | } |
7cbeb80e N |
747 | if (rfd >= 0) |
748 | close(rfd); | |
f752781f NB |
749 | |
750 | sb->dev_roles[i] = | |
751 | __cpu_to_le16(info->disk.raid_disk); | |
1c6cb603 N |
752 | |
753 | fd = open(devname, O_RDONLY); | |
754 | if (fd >= 0) { | |
755 | unsigned long long ds; | |
756 | get_dev_size(fd, devname, &ds); | |
757 | close(fd); | |
758 | ds >>= 9; | |
759 | if (__le64_to_cpu(sb->super_offset) < | |
760 | __le64_to_cpu(sb->data_offset)) { | |
761 | sb->data_size = __cpu_to_le64( | |
762 | ds - __le64_to_cpu(sb->data_offset)); | |
763 | } else { | |
764 | ds -= 8*2; | |
765 | ds &= ~(unsigned long long)(4*2-1); | |
766 | sb->super_offset = __cpu_to_le64(ds); | |
767 | sb->data_size = __cpu_to_le64( | |
768 | ds - __le64_to_cpu(sb->data_offset)); | |
769 | } | |
770 | } | |
1e2b2765 | 771 | } else if (strcmp(update, "linear-grow-update") == 0) { |
82d9eba6 | 772 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
773 | sb->dev_roles[info->disk.number] = |
774 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 775 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 776 | /* make sure resync happens */ |
434b7755 | 777 | sb->resync_offset = 0ULL; |
1e2b2765 | 778 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 779 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 780 | |
14263cf1 NB |
781 | if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) { |
782 | struct bitmap_super_s *bm; | |
911cead7 | 783 | bm = (struct bitmap_super_s*)(st->sb+MAX_SB_SIZE); |
bf4fb153 | 784 | memcpy(bm->uuid, sb->set_uuid, 16); |
14263cf1 | 785 | } |
5a31170d N |
786 | } else if (strcmp(update, "no-bitmap") == 0) { |
787 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
1e2b2765 | 788 | } else if (strcmp(update, "homehost") == 0 && |
0f23aa88 | 789 | homehost) { |
0237e0ca NB |
790 | char *c; |
791 | update = "name"; | |
792 | c = strchr(sb->set_name, ':'); | |
793 | if (c) | |
794 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
795 | else | |
796 | strncpy(info->name, sb->set_name, 32); | |
26a0b8fd | 797 | info->name[32] = 0; |
1e2b2765 | 798 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
799 | if (info->name[0] == 0) |
800 | sprintf(info->name, "%d", info->array.md_minor); | |
801 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
802 | if (homehost && | |
803 | strchr(info->name, ':') == NULL && | |
804 | strlen(homehost)+1+strlen(info->name) < 32) { | |
805 | strcpy(sb->set_name, homehost); | |
806 | strcat(sb->set_name, ":"); | |
807 | strcat(sb->set_name, info->name); | |
808 | } else | |
809 | strcpy(sb->set_name, info->name); | |
1e2b2765 | 810 | } else if (strcmp(update, "devicesize") == 0 && |
bee8ec56 NB |
811 | __le64_to_cpu(sb->super_offset) < |
812 | __le64_to_cpu(sb->data_offset)) { | |
813 | /* set data_size to device size less data_offset */ | |
814 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
911cead7 | 815 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); |
eb9199fb NB |
816 | printf("Size was %llu\n", (unsigned long long) |
817 | __le64_to_cpu(sb->data_size)); | |
bee8ec56 NB |
818 | sb->data_size = __cpu_to_le64( |
819 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
eb9199fb NB |
820 | printf("Size is %llu\n", (unsigned long long) |
821 | __le64_to_cpu(sb->data_size)); | |
1e2b2765 | 822 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 823 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
16715c01 DL |
824 | else if (strcmp(update, "writemostly")==0) |
825 | sb->devflags |= WriteMostly1; | |
826 | else if (strcmp(update, "readwrite")==0) | |
827 | sb->devflags &= ~WriteMostly1; | |
1e2b2765 N |
828 | else |
829 | rv = -1; | |
82d9eba6 NB |
830 | |
831 | sb->sb_csum = calc_sb_1_csum(sb); | |
832 | return rv; | |
833 | } | |
834 | ||
3da92f27 | 835 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
3d3dd91e | 836 | unsigned long long size, char *name, char *homehost, int *uuid) |
82d9eba6 | 837 | { |
6416d527 | 838 | struct mdp_superblock_1 *sb; |
82d9eba6 | 839 | int spares; |
34163fc7 | 840 | int rfd; |
05697ec1 | 841 | char defname[10]; |
911cead7 | 842 | int sbsize; |
6416d527 | 843 | |
911cead7 | 844 | if (posix_memalign((void**)&sb, 512, (MAX_SB_SIZE + BM_SUPER_SIZE + |
3d2c4fc7 DW |
845 | sizeof(struct misc_dev_info))) != 0) { |
846 | fprintf(stderr, Name | |
847 | ": %s could not allocate superblock\n", __func__); | |
848 | return 0; | |
849 | } | |
911cead7 | 850 | memset(sb, 0, MAX_SB_SIZE); |
82d9eba6 | 851 | |
64557c33 | 852 | st->sb = sb; |
ba7eb04f | 853 | if (info == NULL) { |
82d9eba6 NB |
854 | /* zeroing superblock */ |
855 | return 0; | |
05697ec1 | 856 | } |
82d9eba6 NB |
857 | |
858 | spares = info->working_disks - info->active_disks; | |
911cead7 | 859 | if (info->raid_disks + spares > MAX_DEVS) { |
82d9eba6 | 860 | fprintf(stderr, Name ": too many devices requested: %d+%d > %d\n", |
911cead7 | 861 | info->raid_disks , spares, MAX_DEVS); |
82d9eba6 NB |
862 | return 0; |
863 | } | |
864 | ||
82d9eba6 NB |
865 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
866 | sb->major_version = __cpu_to_le32(1); | |
867 | sb->feature_map = 0; | |
868 | sb->pad0 = 0; | |
34163fc7 | 869 | |
350f29f9 NB |
870 | if (uuid) |
871 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
872 | else { | |
3d3dd91e NB |
873 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
874 | read(rfd, sb->set_uuid, 16) != 16) { | |
caa0f6c6 N |
875 | __u32 r[4] = {random(), random(), random(), random()}; |
876 | memcpy(sb->set_uuid, r, 16); | |
3d3dd91e NB |
877 | } |
878 | if (rfd >= 0) close(rfd); | |
34163fc7 | 879 | } |
82d9eba6 | 880 | |
05697ec1 NB |
881 | if (name == NULL || *name == 0) { |
882 | sprintf(defname, "%d", info->md_minor); | |
883 | name = defname; | |
884 | } | |
947fd4dd | 885 | memset(sb->set_name, 0, 32); |
05697ec1 NB |
886 | if (homehost && |
887 | strchr(name, ':')== NULL && | |
888 | strlen(homehost)+1+strlen(name) < 32) { | |
889 | strcpy(sb->set_name, homehost); | |
890 | strcat(sb->set_name, ":"); | |
891 | strcat(sb->set_name, name); | |
892 | } else | |
893 | strcpy(sb->set_name, name); | |
82d9eba6 NB |
894 | |
895 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
896 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 897 | sb->layout = __cpu_to_le32(info->layout); |
5dd497ee | 898 | sb->size = __cpu_to_le64(size*2ULL); |
82d9eba6 NB |
899 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
900 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
901 | ||
902 | sb->data_offset = __cpu_to_le64(0); | |
903 | sb->data_size = __cpu_to_le64(0); | |
904 | sb->super_offset = __cpu_to_le64(0); | |
905 | sb->recovery_offset = __cpu_to_le64(0); | |
906 | ||
907 | sb->utime = sb->ctime; | |
908 | sb->events = __cpu_to_le64(1); | |
34321279 | 909 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 910 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
911 | else |
912 | sb->resync_offset = 0; | |
911cead7 N |
913 | sbsize = sizeof(struct mdp_superblock_1) + 2 * (info->raid_disks + spares); |
914 | sbsize = ROUND_UP(sbsize, 512); | |
915 | sb->max_dev = __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
82d9eba6 | 916 | |
911cead7 | 917 | memset(sb->dev_roles, 0xff, MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); |
82d9eba6 | 918 | |
82d9eba6 NB |
919 | return 1; |
920 | } | |
921 | ||
111d01fc NB |
922 | struct devinfo { |
923 | int fd; | |
924 | char *devname; | |
925 | mdu_disk_info_t disk; | |
926 | struct devinfo *next; | |
927 | }; | |
0e600426 | 928 | #ifndef MDASSEMBLE |
82d9eba6 | 929 | /* Add a device to the superblock being created */ |
f20c3968 | 930 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
111d01fc | 931 | int fd, char *devname) |
82d9eba6 | 932 | { |
3da92f27 | 933 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 934 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc NB |
935 | struct devinfo *di, **dip; |
936 | ||
dfd4d8ee | 937 | if ((dk->state & 6) == 6) /* active, sync */ |
82d9eba6 | 938 | *rp = __cpu_to_le16(dk->raid_disk); |
412ca2e5 | 939 | else if ((dk->state & ~2) == 0) /* active or idle -> spare */ |
82d9eba6 | 940 | *rp = 0xffff; |
34163fc7 | 941 | else |
82d9eba6 | 942 | *rp = 0xfffe; |
111d01fc | 943 | |
f21e18ca | 944 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
911cead7 | 945 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) |
9df04a4f | 946 | sb->max_dev = __cpu_to_le32(dk->number+1); |
8844e291 | 947 | |
d2ca6449 | 948 | sb->dev_number = __cpu_to_le32(dk->number); |
16715c01 | 949 | sb->devflags = 0; /* don't copy another disks flags */ |
d2ca6449 NB |
950 | sb->sb_csum = calc_sb_1_csum(sb); |
951 | ||
111d01fc NB |
952 | dip = (struct devinfo **)&st->info; |
953 | while (*dip) | |
954 | dip = &(*dip)->next; | |
955 | di = malloc(sizeof(struct devinfo)); | |
956 | di->fd = fd; | |
957 | di->devname = devname; | |
958 | di->disk = *dk; | |
959 | di->next = NULL; | |
960 | *dip = di; | |
f20c3968 DW |
961 | |
962 | return 0; | |
82d9eba6 | 963 | } |
0e600426 | 964 | #endif |
82d9eba6 | 965 | |
3da92f27 | 966 | static void locate_bitmap1(struct supertype *st, int fd); |
14263cf1 | 967 | |
3da92f27 | 968 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 969 | { |
3da92f27 | 970 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 971 | unsigned long long sb_offset; |
82d9eba6 | 972 | int sbsize; |
5dd497ee | 973 | unsigned long long dsize; |
96395475 | 974 | |
beae1dfe NB |
975 | if (!get_dev_size(fd, NULL, &dsize)) |
976 | return 1; | |
977 | ||
978 | dsize >>= 9; | |
96395475 | 979 | |
5dd497ee | 980 | if (dsize < 24) |
96395475 NB |
981 | return 2; |
982 | ||
983 | /* | |
984 | * Calculate the position of the superblock. | |
985 | * It is always aligned to a 4K boundary and | |
986 | * depending on minor_version, it can be: | |
987 | * 0: At least 8K, but less than 12K, from end of device | |
988 | * 1: At start of device | |
989 | * 2: 4K from start of device. | |
990 | */ | |
991 | switch(st->minor_version) { | |
992 | case 0: | |
5dd497ee | 993 | sb_offset = dsize; |
96395475 NB |
994 | sb_offset -= 8*2; |
995 | sb_offset &= ~(4*2-1); | |
996 | break; | |
997 | case 1: | |
6fbba4c9 | 998 | sb_offset = 0; |
96395475 NB |
999 | break; |
1000 | case 2: | |
1001 | sb_offset = 4*2; | |
1002 | break; | |
1003 | default: | |
1004 | return -EINVAL; | |
1005 | } | |
1006 | ||
82d9eba6 | 1007 | |
34163fc7 | 1008 | |
6fbba4c9 NB |
1009 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
1010 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 NB |
1011 | ) { |
1012 | fprintf(stderr, Name ": internal error - sb_offset is wrong\n"); | |
1013 | abort(); | |
1014 | } | |
82d9eba6 | 1015 | |
6fbba4c9 | 1016 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
1017 | return 3; |
1018 | ||
1019 | sbsize = sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev); | |
6416d527 | 1020 | sbsize = (sbsize+511)&(~511UL); |
82d9eba6 | 1021 | |
5ea022a1 | 1022 | if (awrite(fd, sb, sbsize) != sbsize) |
82d9eba6 NB |
1023 | return 4; |
1024 | ||
14263cf1 NB |
1025 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1026 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
911cead7 | 1027 | (((char*)sb)+MAX_SB_SIZE); |
14263cf1 | 1028 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
3da92f27 | 1029 | locate_bitmap1(st, fd); |
5ea022a1 N |
1030 | if (awrite(fd, bm, sizeof(*bm)) != |
1031 | sizeof(*bm)) | |
9fca7d62 | 1032 | return 5; |
14263cf1 NB |
1033 | } |
1034 | } | |
570c0542 | 1035 | fsync(fd); |
82d9eba6 NB |
1036 | return 0; |
1037 | } | |
1038 | ||
3da92f27 | 1039 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1040 | |
2fb749d1 NB |
1041 | static unsigned long choose_bm_space(unsigned long devsize) |
1042 | { | |
1043 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1044 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1045 | * NOTE: result must be multiple of 4K else bad things happen |
1046 | * on 4K-sector devices. | |
2fb749d1 | 1047 | */ |
69646c14 | 1048 | if (devsize < 64*2) return 0; |
2fb749d1 NB |
1049 | if (devsize - 64*2 >= 200*1024*1024*2) |
1050 | return 128*2; | |
1051 | if (devsize - 4*2 > 8*1024*1024*2) | |
1052 | return 64*2; | |
1053 | return 4*2; | |
1054 | } | |
1055 | ||
e8090005 N |
1056 | static void free_super1(struct supertype *st); |
1057 | ||
111d01fc NB |
1058 | #ifndef MDASSEMBLE |
1059 | static int write_init_super1(struct supertype *st) | |
82d9eba6 | 1060 | { |
3da92f27 | 1061 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1062 | struct supertype *refst; |
dfe47e00 | 1063 | int rfd; |
111d01fc | 1064 | int rv = 0; |
f21e18ca | 1065 | unsigned long long bm_space; |
a380e275 | 1066 | unsigned long long reserved; |
111d01fc | 1067 | struct devinfo *di; |
8fac0577 | 1068 | unsigned long long dsize, array_size; |
f21e18ca | 1069 | unsigned long long sb_offset; |
82d9eba6 | 1070 | |
111d01fc NB |
1071 | for (di = st->info; di && ! rv ; di = di->next) { |
1072 | if (di->disk.state == 1) | |
1073 | continue; | |
a0c8a17f NB |
1074 | if (di->fd < 0) |
1075 | continue; | |
82d9eba6 | 1076 | |
9277cc77 N |
1077 | while (Kill(di->devname, NULL, 0, 1, 1) == 0) |
1078 | ; | |
82d9eba6 | 1079 | |
111d01fc NB |
1080 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1081 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
adbb382b | 1082 | sb->devflags |= WriteMostly1; |
9a88e7b6 | 1083 | else |
adbb382b | 1084 | sb->devflags &= ~WriteMostly1; |
892debc8 | 1085 | |
111d01fc NB |
1086 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
1087 | read(rfd, sb->device_uuid, 16) != 16) { | |
83208785 N |
1088 | __u32 r[4] = {random(), random(), random(), random()}; |
1089 | memcpy(sb->device_uuid, r, 16); | |
111d01fc | 1090 | } |
83208785 N |
1091 | if (rfd >= 0) |
1092 | close(rfd); | |
1093 | ||
111d01fc NB |
1094 | sb->events = 0; |
1095 | ||
e8090005 N |
1096 | refst = dup_super(st); |
1097 | if (load_super1(refst, di->fd, NULL)==0) { | |
1098 | struct mdp_superblock_1 *refsb = refst->sb; | |
111d01fc NB |
1099 | |
1100 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1101 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1102 | /* same array, so preserve events and | |
1103 | * dev_number */ | |
1104 | sb->events = refsb->events; | |
1105 | /* bugs in 2.6.17 and earlier mean the | |
1106 | * dev_number chosen in Manage must be preserved | |
1107 | */ | |
1108 | if (get_linux_version() >= 2006018) | |
1109 | sb->dev_number = refsb->dev_number; | |
1110 | } | |
e8090005 | 1111 | free_super1(refst); |
892debc8 | 1112 | } |
e8090005 | 1113 | free(refst); |
34163fc7 | 1114 | |
40114213 JS |
1115 | if (!get_dev_size(di->fd, NULL, &dsize)) { |
1116 | rv = 1; | |
1117 | goto error_out; | |
1118 | } | |
111d01fc | 1119 | dsize >>= 9; |
82d9eba6 | 1120 | |
111d01fc NB |
1121 | if (dsize < 24) { |
1122 | close(di->fd); | |
40114213 JS |
1123 | rv = 2; |
1124 | goto error_out; | |
111d01fc | 1125 | } |
82d9eba6 NB |
1126 | |
1127 | ||
111d01fc NB |
1128 | /* |
1129 | * Calculate the position of the superblock. | |
1130 | * It is always aligned to a 4K boundary and | |
1131 | * depending on minor_version, it can be: | |
1132 | * 0: At least 8K, but less than 12K, from end of device | |
1133 | * 1: At start of device | |
1134 | * 2: 4K from start of device. | |
1135 | * Depending on the array size, we might leave extra space | |
1136 | * for a bitmap. | |
1137 | */ | |
1138 | array_size = __le64_to_cpu(sb->size); | |
1139 | /* work out how much space we left for a bitmap */ | |
1140 | bm_space = choose_bm_space(array_size); | |
1141 | ||
1142 | switch(st->minor_version) { | |
1143 | case 0: | |
1144 | sb_offset = dsize; | |
1145 | sb_offset -= 8*2; | |
1146 | sb_offset &= ~(4*2-1); | |
1147 | sb->super_offset = __cpu_to_le64(sb_offset); | |
1148 | sb->data_offset = __cpu_to_le64(0); | |
f21e18ca | 1149 | if (sb_offset < array_size + bm_space) |
a380e275 | 1150 | bm_space = sb_offset - array_size; |
111d01fc NB |
1151 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
1152 | break; | |
1153 | case 1: | |
1154 | sb->super_offset = __cpu_to_le64(0); | |
a380e275 N |
1155 | reserved = bm_space + 4*2; |
1156 | /* Try for multiple of 1Meg so it is nicely aligned */ | |
1157 | #define ONE_MEG (2*1024) | |
1158 | reserved = ((reserved + ONE_MEG-1)/ONE_MEG) * ONE_MEG; | |
1159 | if (reserved + __le64_to_cpu(sb->size) > dsize) | |
1160 | reserved = dsize - __le64_to_cpu(sb->size); | |
1161 | /* force 4K alignment */ | |
1162 | reserved &= ~7ULL; | |
1163 | ||
1164 | sb->data_offset = __cpu_to_le64(reserved); | |
1165 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
111d01fc NB |
1166 | break; |
1167 | case 2: | |
1168 | sb_offset = 4*2; | |
1169 | sb->super_offset = __cpu_to_le64(4*2); | |
1170 | if (4*2 + 4*2 + bm_space + __le64_to_cpu(sb->size) | |
1171 | > dsize) | |
1172 | bm_space = dsize - __le64_to_cpu(sb->size) | |
1173 | - 4*2 - 4*2; | |
a380e275 N |
1174 | |
1175 | reserved = bm_space + 4*2 + 4*2; | |
1176 | /* Try for multiple of 1Meg so it is nicely aligned */ | |
1177 | #define ONE_MEG (2*1024) | |
1178 | reserved = ((reserved + ONE_MEG-1)/ONE_MEG) * ONE_MEG; | |
1179 | if (reserved + __le64_to_cpu(sb->size) > dsize) | |
1180 | reserved = dsize - __le64_to_cpu(sb->size); | |
1181 | /* force 4K alignment */ | |
1182 | reserved &= ~7ULL; | |
1183 | ||
1184 | sb->data_offset = __cpu_to_le64(reserved); | |
1185 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
111d01fc NB |
1186 | break; |
1187 | default: | |
40114213 JS |
1188 | fprintf(stderr, Name ": Failed to write invalid " |
1189 | "metadata format 1.%i to %s\n", | |
1190 | st->minor_version, di->devname); | |
1191 | rv = -EINVAL; | |
1192 | goto out; | |
111d01fc | 1193 | } |
82d9eba6 NB |
1194 | |
1195 | ||
111d01fc NB |
1196 | sb->sb_csum = calc_sb_1_csum(sb); |
1197 | rv = store_super1(st, di->fd); | |
111d01fc NB |
1198 | if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1)) |
1199 | rv = st->ss->write_bitmap(st, di->fd); | |
1200 | close(di->fd); | |
1201 | di->fd = -1; | |
1202 | } | |
40114213 JS |
1203 | error_out: |
1204 | if (rv) | |
1205 | fprintf(stderr, Name ": Failed to write metadata to %s\n", | |
1206 | di->devname); | |
1207 | out: | |
82d9eba6 NB |
1208 | return rv; |
1209 | } | |
111d01fc | 1210 | #endif |
82d9eba6 | 1211 | |
64557c33 | 1212 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
1213 | { |
1214 | /* | |
1215 | * return: | |
1216 | * 0 same, or first was empty, and second was copied | |
1217 | * 1 second had wrong number | |
1218 | * 2 wrong uuid | |
1219 | * 3 wrong other info | |
1220 | */ | |
64557c33 NB |
1221 | struct mdp_superblock_1 *first = st->sb; |
1222 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
1223 | |
1224 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
1225 | return 1; | |
1226 | if (second->major_version != __cpu_to_le32(1)) | |
1227 | return 1; | |
1228 | ||
1229 | if (!first) { | |
3d2c4fc7 | 1230 | if (posix_memalign((void**)&first, 512, |
911cead7 | 1231 | MAX_SB_SIZE + BM_SUPER_SIZE + |
3d2c4fc7 DW |
1232 | sizeof(struct misc_dev_info)) != 0) { |
1233 | fprintf(stderr, Name | |
1234 | ": %s could not allocate superblock\n", __func__); | |
1235 | return 1; | |
1236 | } | |
911cead7 | 1237 | memcpy(first, second, MAX_SB_SIZE + BM_SUPER_SIZE + |
bee8ec56 | 1238 | sizeof(struct misc_dev_info)); |
64557c33 | 1239 | st->sb = first; |
82d9eba6 NB |
1240 | return 0; |
1241 | } | |
1242 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
1243 | return 2; | |
1244 | ||
1245 | if (first->ctime != second->ctime || | |
1246 | first->level != second->level || | |
1247 | first->layout != second->layout || | |
1248 | first->size != second->size || | |
1249 | first->chunksize != second->chunksize || | |
1250 | first->raid_disks != second->raid_disks) | |
1251 | return 3; | |
1252 | return 0; | |
1253 | } | |
1254 | ||
3da92f27 | 1255 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 1256 | { |
5dd497ee | 1257 | unsigned long long dsize; |
82d9eba6 NB |
1258 | unsigned long long sb_offset; |
1259 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
1260 | int uuid[4]; |
1261 | struct bitmap_super_s *bsb; | |
bee8ec56 | 1262 | struct misc_dev_info *misc; |
82d9eba6 | 1263 | |
3da92f27 | 1264 | free_super1(st); |
82d9eba6 | 1265 | |
a17a3de3 | 1266 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 1267 | int bestvers = -1; |
23dc1ae8 | 1268 | struct supertype tst; |
570c0542 NB |
1269 | __u64 bestctime = 0; |
1270 | /* guess... choose latest ctime */ | |
ef609477 | 1271 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
1272 | tst.ss = &super1; |
1273 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
1274 | switch(load_super1(&tst, fd, devname)) { |
1275 | case 0: super = tst.sb; | |
570c0542 NB |
1276 | if (bestvers == -1 || |
1277 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 1278 | bestvers = tst.minor_version; |
570c0542 NB |
1279 | bestctime = __le64_to_cpu(super->ctime); |
1280 | } | |
1281 | free(super); | |
3da92f27 | 1282 | tst.sb = NULL; |
570c0542 | 1283 | break; |
23dc1ae8 | 1284 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
1285 | case 2: break; /* bad, try next */ |
1286 | } | |
1287 | } | |
570c0542 NB |
1288 | if (bestvers != -1) { |
1289 | int rv; | |
23dc1ae8 NB |
1290 | tst.minor_version = bestvers; |
1291 | tst.ss = &super1; | |
911cead7 | 1292 | tst.max_devs = MAX_DEVS; |
3da92f27 | 1293 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
1294 | if (rv == 0) |
1295 | *st = tst; | |
570c0542 NB |
1296 | return rv; |
1297 | } | |
82d9eba6 NB |
1298 | return 2; |
1299 | } | |
beae1dfe NB |
1300 | if (!get_dev_size(fd, devname, &dsize)) |
1301 | return 1; | |
1302 | dsize >>= 9; | |
82d9eba6 | 1303 | |
5dd497ee | 1304 | if (dsize < 24) { |
82d9eba6 | 1305 | if (devname) |
5dd497ee NB |
1306 | fprintf(stderr, Name ": %s is too small for md: size is %llu sectors.\n", |
1307 | devname, dsize); | |
82d9eba6 NB |
1308 | return 1; |
1309 | } | |
1310 | ||
1311 | /* | |
1312 | * Calculate the position of the superblock. | |
1313 | * It is always aligned to a 4K boundary and | |
14263cf1 | 1314 | * depending on minor_version, it can be: |
82d9eba6 NB |
1315 | * 0: At least 8K, but less than 12K, from end of device |
1316 | * 1: At start of device | |
1317 | * 2: 4K from start of device. | |
1318 | */ | |
1319 | switch(st->minor_version) { | |
1320 | case 0: | |
5dd497ee | 1321 | sb_offset = dsize; |
82d9eba6 NB |
1322 | sb_offset -= 8*2; |
1323 | sb_offset &= ~(4*2-1); | |
1324 | break; | |
1325 | case 1: | |
1326 | sb_offset = 0; | |
1327 | break; | |
1328 | case 2: | |
1329 | sb_offset = 4*2; | |
1330 | break; | |
1331 | default: | |
1332 | return -EINVAL; | |
1333 | } | |
1334 | ||
1335 | ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */ | |
1336 | ||
1337 | ||
1338 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { | |
1339 | if (devname) | |
1340 | fprintf(stderr, Name ": Cannot seek to superblock on %s: %s\n", | |
1341 | devname, strerror(errno)); | |
1342 | return 1; | |
1343 | } | |
1344 | ||
3d2c4fc7 | 1345 | if (posix_memalign((void**)&super, 512, |
911cead7 N |
1346 | MAX_SB_SIZE + BM_SUPER_SIZE + |
1347 | sizeof(struct misc_dev_info)) != 0) { | |
3d2c4fc7 DW |
1348 | fprintf(stderr, Name ": %s could not allocate superblock\n", |
1349 | __func__); | |
1350 | return 1; | |
1351 | } | |
82d9eba6 | 1352 | |
911cead7 | 1353 | if (aread(fd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { |
82d9eba6 NB |
1354 | if (devname) |
1355 | fprintf(stderr, Name ": Cannot read superblock on %s\n", | |
1356 | devname); | |
1357 | free(super); | |
1358 | return 1; | |
1359 | } | |
1360 | ||
1361 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
1362 | if (devname) | |
1363 | fprintf(stderr, Name ": No super block found on %s (Expected magic %08x, got %08x)\n", | |
1364 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); | |
1365 | free(super); | |
1366 | return 2; | |
1367 | } | |
1368 | ||
1369 | if (__le32_to_cpu(super->major_version) != 1) { | |
1370 | if (devname) | |
1371 | fprintf(stderr, Name ": Cannot interpret superblock on %s - version is %d\n", | |
1372 | devname, __le32_to_cpu(super->major_version)); | |
1373 | free(super); | |
1374 | return 2; | |
1375 | } | |
1376 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
1377 | if (devname) | |
1378 | fprintf(stderr, Name ": No superblock found on %s (super_offset is wrong)\n", | |
1379 | devname); | |
1380 | free(super); | |
1381 | return 2; | |
1382 | } | |
64557c33 | 1383 | st->sb = super; |
14263cf1 | 1384 | |
911cead7 | 1385 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
bee8ec56 | 1386 | |
911cead7 | 1387 | misc = (struct misc_dev_info*) (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE); |
bee8ec56 NB |
1388 | misc->device_size = dsize; |
1389 | ||
14263cf1 NB |
1390 | /* Now check on the bitmap superblock */ |
1391 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
1392 | return 0; | |
1393 | /* Read the bitmap superblock and make sure it looks | |
1394 | * valid. If it doesn't clear the bit. An --assemble --force | |
1395 | * should get that written out. | |
1396 | */ | |
3da92f27 | 1397 | locate_bitmap1(st, fd); |
b2bfdfa0 | 1398 | if (aread(fd, bsb, 512) != 512) |
14263cf1 NB |
1399 | goto no_bitmap; |
1400 | ||
3da92f27 | 1401 | uuid_from_super1(st, uuid); |
14263cf1 NB |
1402 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
1403 | memcmp(bsb->uuid, uuid, 16) != 0) | |
1404 | goto no_bitmap; | |
1405 | return 0; | |
1406 | ||
1407 | no_bitmap: | |
c0c1acd6 N |
1408 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) |
1409 | & ~MD_FEATURE_BITMAP_OFFSET); | |
82d9eba6 NB |
1410 | return 0; |
1411 | } | |
1412 | ||
1413 | ||
1414 | static struct supertype *match_metadata_desc1(char *arg) | |
1415 | { | |
1416 | struct supertype *st = malloc(sizeof(*st)); | |
1417 | if (!st) return st; | |
1418 | ||
ef609477 | 1419 | memset(st, 0, sizeof(*st)); |
d1d599ea | 1420 | st->container_dev = NoMdDev; |
82d9eba6 | 1421 | st->ss = &super1; |
911cead7 | 1422 | st->max_devs = MAX_DEVS; |
64557c33 | 1423 | st->sb = NULL; |
9b2a22d3 N |
1424 | /* leading zeros can be safely ignored. --detail generates them. */ |
1425 | while (*arg == '0') | |
1426 | arg++; | |
1427 | if (strcmp(arg, "1.0") == 0 || | |
1428 | strcmp(arg, "1.00") == 0) { | |
82d9eba6 NB |
1429 | st->minor_version = 0; |
1430 | return st; | |
1431 | } | |
9b2a22d3 | 1432 | if (strcmp(arg, "1.1") == 0 || |
50827504 | 1433 | strcmp(arg, "1.01") == 0 |
7d5c3964 | 1434 | ) { |
82d9eba6 NB |
1435 | st->minor_version = 1; |
1436 | return st; | |
1437 | } | |
9b2a22d3 | 1438 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 1439 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 1440 | strcmp(arg, "default") == 0 || |
26f467a9 | 1441 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 1442 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
1443 | st->minor_version = 2; |
1444 | return st; | |
1445 | } | |
a17a3de3 | 1446 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 1447 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
1448 | st->minor_version = -1; |
1449 | return st; | |
1450 | } | |
82d9eba6 NB |
1451 | |
1452 | free(st); | |
1453 | return NULL; | |
1454 | } | |
1455 | ||
34163fc7 NB |
1456 | /* find available size on device with this devsize, using |
1457 | * superblock type st, and reserving 'reserve' sectors for | |
1458 | * a possible bitmap | |
1459 | */ | |
1bf4e2d9 | 1460 | static __u64 avail_size1(struct supertype *st, __u64 devsize) |
82d9eba6 | 1461 | { |
2a528478 | 1462 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
1463 | if (devsize < 24) |
1464 | return 0; | |
1465 | ||
2a528478 N |
1466 | if (super == NULL) |
1467 | /* creating: allow suitable space for bitmap */ | |
1468 | devsize -= choose_bm_space(devsize); | |
1469 | #ifndef MDASSEMBLE | |
1470 | else if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) { | |
1471 | /* hot-add. allow for actual size of bitmap */ | |
1472 | struct bitmap_super_s *bsb; | |
911cead7 | 1473 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
2a528478 N |
1474 | devsize -= bitmap_sectors(bsb); |
1475 | } | |
1476 | #endif | |
21e92547 | 1477 | |
a380e275 N |
1478 | if (st->minor_version < 0) |
1479 | /* not specified, so time to set default */ | |
1480 | st->minor_version = 2; | |
1481 | if (super == NULL && st->minor_version > 0) { | |
1482 | /* haven't committed to a size yet, so allow some | |
1483 | * slack for alignment of data_offset. | |
1484 | * We haven't access to device details so allow | |
1485 | * 1 Meg if bigger than 1Gig | |
1486 | */ | |
1487 | if (devsize > 1024*1024*2) | |
1488 | devsize -= 1024*2; | |
1489 | } | |
34163fc7 NB |
1490 | switch(st->minor_version) { |
1491 | case 0: | |
1bf4e2d9 NB |
1492 | /* at end */ |
1493 | return ((devsize - 8*2 ) & ~(4*2-1)); | |
34163fc7 | 1494 | case 1: |
1bf4e2d9 NB |
1495 | /* at start, 4K for superblock and possible bitmap */ |
1496 | return devsize - 4*2; | |
34163fc7 | 1497 | case 2: |
1bf4e2d9 NB |
1498 | /* 4k from start, 4K for superblock and possible bitmap */ |
1499 | return devsize - (4+4)*2; | |
34163fc7 NB |
1500 | } |
1501 | return 0; | |
1502 | } | |
1503 | ||
1bf4e2d9 | 1504 | static int |
3da92f27 | 1505 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
1506 | int *chunkp, int delay, int write_behind, |
1507 | unsigned long long size, | |
21e92547 | 1508 | int may_change, int major) |
34163fc7 NB |
1509 | { |
1510 | /* | |
c0c1acd6 N |
1511 | * If not may_change, then this is a 'Grow' without sysfs support for |
1512 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
1513 | * If may_change, then this is create or a Grow with sysfs syupport, | |
1514 | * and we can put the bitmap wherever we like. | |
34163fc7 | 1515 | * |
f9c25f1d | 1516 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
1517 | */ |
1518 | ||
1bf4e2d9 | 1519 | unsigned long long bits; |
199171a2 | 1520 | unsigned long long max_bits; |
34163fc7 | 1521 | unsigned long long min_chunk; |
199171a2 | 1522 | long offset; |
f21e18ca | 1523 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 1524 | int room = 0; |
c0c1acd6 | 1525 | int creating = 0; |
3da92f27 | 1526 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 1527 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
3b7e9d0c | 1528 | int uuid[4]; |
34163fc7 | 1529 | |
c0c1acd6 N |
1530 | if (__le64_to_cpu(sb->data_size) == 0) |
1531 | /* Must be creating the array, else data_size would be non-zero */ | |
1532 | creating = 1; | |
199171a2 NB |
1533 | switch(st->minor_version) { |
1534 | case 0: | |
a31128d2 N |
1535 | /* either 3K after the superblock (when hot-add), |
1536 | * or some amount of space before. | |
199171a2 | 1537 | */ |
c0c1acd6 | 1538 | if (creating) { |
199171a2 NB |
1539 | /* We are creating array, so we *know* how much room has |
1540 | * been left. | |
1541 | */ | |
1542 | offset = 0; | |
2fb749d1 | 1543 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
199171a2 NB |
1544 | } else { |
1545 | room = __le64_to_cpu(sb->super_offset) | |
1546 | - __le64_to_cpu(sb->data_offset) | |
1547 | - __le64_to_cpu(sb->data_size); | |
c0c1acd6 N |
1548 | |
1549 | if (!may_change || (room < 3*2 && | |
199171a2 NB |
1550 | __le32_to_cpu(sb->max_dev) <= 384)) { |
1551 | room = 3*2; | |
1552 | offset = 1*2; | |
1553 | } else { | |
1554 | offset = 0; /* means movable offset */ | |
1555 | } | |
1556 | } | |
1557 | break; | |
1558 | case 1: | |
1559 | case 2: /* between superblock and data */ | |
c0c1acd6 | 1560 | if (creating) { |
199171a2 | 1561 | offset = 4*2; |
2fb749d1 | 1562 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
199171a2 NB |
1563 | } else { |
1564 | room = __le64_to_cpu(sb->data_offset) | |
1565 | - __le64_to_cpu(sb->super_offset); | |
c0c1acd6 N |
1566 | if (!may_change) { |
1567 | room -= 2; /* Leave 1K for superblock */ | |
199171a2 NB |
1568 | offset = 2; |
1569 | } else { | |
c0c1acd6 | 1570 | room -= 4*2; /* leave 4K for superblock */ |
199171a2 NB |
1571 | offset = 4*2; |
1572 | } | |
1573 | } | |
1574 | break; | |
ae491d1e NB |
1575 | default: |
1576 | return 0; | |
199171a2 | 1577 | } |
1bf4e2d9 | 1578 | |
199171a2 NB |
1579 | if (chunk == UnSet && room > 128*2) |
1580 | /* Limit to 128K of bitmap when chunk size not requested */ | |
1581 | room = 128*2; | |
1bf4e2d9 | 1582 | |
199171a2 | 1583 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
1584 | |
1585 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 1586 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
1587 | while (bits > max_bits) { |
1588 | min_chunk *= 2; | |
1589 | bits = (bits+1)/2; | |
1590 | } | |
b8ab2a50 N |
1591 | if (chunk == UnSet) { |
1592 | /* For practical purpose, 64Meg is a good | |
1593 | * default chunk size for internal bitmaps. | |
1594 | */ | |
34163fc7 | 1595 | chunk = min_chunk; |
b8ab2a50 N |
1596 | if (chunk < 64*1024*1024) |
1597 | chunk = 64*1024*1024; | |
1598 | } else if (chunk < min_chunk) | |
34163fc7 | 1599 | return 0; /* chunk size too small */ |
21e92547 NB |
1600 | if (chunk == 0) /* rounding problem */ |
1601 | return 0; | |
34163fc7 | 1602 | |
199171a2 | 1603 | if (offset == 0) { |
a31128d2 N |
1604 | /* start bitmap on a 4K boundary with enough space for |
1605 | * the bitmap | |
1606 | */ | |
199171a2 | 1607 | bits = (size*512) / chunk + 1; |
a31128d2 N |
1608 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
1609 | room *= 8; /* convert 4K blocks to sectors */ | |
199171a2 NB |
1610 | offset = -room; |
1611 | } | |
1612 | ||
1613 | sb->bitmap_offset = __cpu_to_le32(offset); | |
34163fc7 | 1614 | |
c0c1acd6 N |
1615 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) |
1616 | | MD_FEATURE_BITMAP_OFFSET); | |
29e766a5 | 1617 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 1618 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 1619 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
1620 | uuid_from_super1(st, uuid); |
1621 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
1622 | bms->chunksize = __cpu_to_le32(chunk); |
1623 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 1624 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 NB |
1625 | bms->write_behind = __cpu_to_le32(write_behind); |
1626 | ||
199171a2 | 1627 | *chunkp = chunk; |
34163fc7 NB |
1628 | return 1; |
1629 | } | |
1630 | ||
3da92f27 | 1631 | static void locate_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1632 | { |
34163fc7 | 1633 | unsigned long long offset; |
1e0d770c NB |
1634 | struct mdp_superblock_1 *sb; |
1635 | int mustfree = 0; | |
34163fc7 | 1636 | |
3da92f27 NB |
1637 | if (!st->sb) { |
1638 | if (st->ss->load_super(st, fd, NULL)) | |
f6d75de8 | 1639 | return; /* no error I hope... */ |
1e0d770c NB |
1640 | mustfree = 1; |
1641 | } | |
3da92f27 | 1642 | sb = st->sb; |
e478dc86 | 1643 | |
1bf4e2d9 | 1644 | offset = __le64_to_cpu(sb->super_offset); |
68754bd1 | 1645 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset); |
1e0d770c | 1646 | if (mustfree) |
f6d75de8 | 1647 | free(sb); |
1bf4e2d9 | 1648 | lseek64(fd, offset<<9, 0); |
34163fc7 NB |
1649 | } |
1650 | ||
3da92f27 | 1651 | static int write_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1652 | { |
3da92f27 | 1653 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 1654 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
34163fc7 | 1655 | int rv = 0; |
d669228f | 1656 | void *buf; |
34163fc7 | 1657 | int towrite, n; |
34163fc7 | 1658 | |
3da92f27 | 1659 | locate_bitmap1(st, fd); |
34163fc7 | 1660 | |
d669228f JS |
1661 | if (posix_memalign(&buf, 4096, 4096)) |
1662 | return -ENOMEM; | |
1663 | ||
6416d527 | 1664 | memset(buf, 0xff, 4096); |
b2bfdfa0 | 1665 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); |
6416d527 | 1666 | |
1bf4e2d9 NB |
1667 | towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9); |
1668 | towrite = (towrite+7) >> 3; /* bits to bytes */ | |
6416d527 NB |
1669 | towrite += sizeof(bitmap_super_t); |
1670 | towrite = ROUND_UP(towrite, 512); | |
34163fc7 NB |
1671 | while (towrite > 0) { |
1672 | n = towrite; | |
6416d527 NB |
1673 | if (n > 4096) |
1674 | n = 4096; | |
b6db6fab | 1675 | n = awrite(fd, buf, n); |
34163fc7 NB |
1676 | if (n > 0) |
1677 | towrite -= n; | |
1678 | else | |
1679 | break; | |
6416d527 | 1680 | memset(buf, 0xff, 4096); |
34163fc7 NB |
1681 | } |
1682 | fsync(fd); | |
1683 | if (towrite) | |
1684 | rv = -2; | |
1685 | ||
d669228f | 1686 | free(buf); |
34163fc7 | 1687 | return rv; |
82d9eba6 NB |
1688 | } |
1689 | ||
3da92f27 | 1690 | static void free_super1(struct supertype *st) |
df37ffc0 | 1691 | { |
3da92f27 NB |
1692 | if (st->sb) |
1693 | free(st->sb); | |
1cc7f4fe N |
1694 | while (st->info) { |
1695 | struct devinfo *di = st->info; | |
1696 | st->info = di->next; | |
1697 | if (di->fd >= 0) | |
1698 | close(di->fd); | |
1699 | free(di); | |
1700 | } | |
3da92f27 | 1701 | st->sb = NULL; |
df37ffc0 NB |
1702 | } |
1703 | ||
0e600426 | 1704 | #ifndef MDASSEMBLE |
17f25ca6 NB |
1705 | static int validate_geometry1(struct supertype *st, int level, |
1706 | int layout, int raiddisks, | |
c21e737b | 1707 | int *chunk, unsigned long long size, |
2c514b71 NB |
1708 | char *subdev, unsigned long long *freesize, |
1709 | int verbose) | |
17f25ca6 NB |
1710 | { |
1711 | unsigned long long ldsize; | |
1712 | int fd; | |
1713 | ||
b42f577a N |
1714 | if (level == LEVEL_CONTAINER) { |
1715 | if (verbose) | |
1716 | fprintf(stderr, Name ": 1.x metadata does not support containers\n"); | |
17f25ca6 | 1717 | return 0; |
b42f577a | 1718 | } |
bb7295f1 N |
1719 | if (chunk && *chunk == UnSet) |
1720 | *chunk = DEFAULT_CHUNK; | |
1721 | ||
17f25ca6 NB |
1722 | if (!subdev) |
1723 | return 1; | |
1724 | ||
1725 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
1726 | if (fd < 0) { | |
2c514b71 NB |
1727 | if (verbose) |
1728 | fprintf(stderr, Name ": super1.x cannot open %s: %s\n", | |
1729 | subdev, strerror(errno)); | |
17f25ca6 NB |
1730 | return 0; |
1731 | } | |
2c514b71 | 1732 | |
17f25ca6 NB |
1733 | if (!get_dev_size(fd, subdev, &ldsize)) { |
1734 | close(fd); | |
1735 | return 0; | |
1736 | } | |
1737 | close(fd); | |
1738 | ||
1739 | *freesize = avail_size1(st, ldsize >> 9); | |
1740 | return 1; | |
1741 | } | |
0e600426 | 1742 | #endif /* MDASSEMBLE */ |
17f25ca6 | 1743 | |
82d9eba6 | 1744 | struct superswitch super1 = { |
c7654afc | 1745 | #ifndef MDASSEMBLE |
82d9eba6 NB |
1746 | .examine_super = examine_super1, |
1747 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 1748 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
1749 | .detail_super = detail_super1, |
1750 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 1751 | .export_detail_super = export_detail_super1, |
111d01fc | 1752 | .write_init_super = write_init_super1, |
0e600426 N |
1753 | .validate_geometry = validate_geometry1, |
1754 | .add_to_super = add_to_super1, | |
c7654afc | 1755 | #endif |
83b6208e | 1756 | .match_home = match_home1, |
82d9eba6 NB |
1757 | .uuid_from_super = uuid_from_super1, |
1758 | .getinfo_super = getinfo_super1, | |
00bbdbda | 1759 | .container_content = container_content1, |
82d9eba6 | 1760 | .update_super = update_super1, |
82d9eba6 | 1761 | .init_super = init_super1, |
82d9eba6 | 1762 | .store_super = store_super1, |
82d9eba6 NB |
1763 | .compare_super = compare_super1, |
1764 | .load_super = load_super1, | |
1765 | .match_metadata_desc = match_metadata_desc1, | |
1766 | .avail_size = avail_size1, | |
34163fc7 NB |
1767 | .add_internal_bitmap = add_internal_bitmap1, |
1768 | .locate_bitmap = locate_bitmap1, | |
1769 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 1770 | .free_super = free_super1, |
f277ce36 NB |
1771 | #if __BYTE_ORDER == BIG_ENDIAN |
1772 | .swapuuid = 0, | |
1773 | #else | |
1774 | .swapuuid = 1, | |
1775 | #endif | |
31015d57 | 1776 | .name = "1.x", |
82d9eba6 | 1777 | }; |