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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) */ | |
8fe1c44f N |
61 | __u32 new_offset; /* signed number to add to data_offset in new |
62 | * layout. 0 == no-change. This can be | |
63 | * different on each device in the array. | |
64 | */ | |
82d9eba6 NB |
65 | |
66 | /* constant this-device information - 64 bytes */ | |
67 | __u64 data_offset; /* sector start of data, often 0 */ | |
68 | __u64 data_size; /* sectors in this device that can be used for data */ | |
69 | __u64 super_offset; /* sector start of this superblock */ | |
70 | __u64 recovery_offset;/* sectors before this offset (from data_offset) have been recovered */ | |
71 | __u32 dev_number; /* permanent identifier of this device - not role in raid */ | |
72 | __u32 cnt_corrected_read; /* number of read errors that were corrected by re-writing */ | |
73 | __u8 device_uuid[16]; /* user-space setable, ignored by kernel */ | |
5d500228 | 74 | __u8 devflags; /* per-device flags. Only one defined...*/ |
dfd4d8ee | 75 | #define WriteMostly1 1 /* mask for writemostly flag in above */ |
bf95d0f3 N |
76 | /* bad block log. If there are any bad blocks the feature flag is set. |
77 | * if offset and size are non-zero, that space is reserved and available. | |
78 | */ | |
79 | __u8 bblog_shift; /* shift from sectors to block size for badblocklist */ | |
80 | __u16 bblog_size; /* number of sectors reserved for badblocklist */ | |
81 | __u32 bblog_offset; /* sector offset from superblock to bblog, signed */ | |
82d9eba6 NB |
82 | |
83 | /* array state information - 64 bytes */ | |
84 | __u64 utime; /* 40 bits second, 24 btes microseconds */ | |
85 | __u64 events; /* incremented when superblock updated */ | |
86 | __u64 resync_offset; /* data before this offset (from data_offset) known to be in sync */ | |
4180aa4d N |
87 | __u32 sb_csum; /* checksum upto dev_roles[max_dev] */ |
88 | __u32 max_dev; /* size of dev_roles[] array to consider */ | |
82d9eba6 NB |
89 | __u8 pad3[64-32]; /* set to 0 when writing */ |
90 | ||
91 | /* device state information. Indexed by dev_number. | |
92 | * 2 bytes per device | |
93 | * Note there are no per-device state flags. State information is rolled | |
94 | * into the 'roles' value. If a device is spare or faulty, then it doesn't | |
95 | * have a meaningful role. | |
96 | */ | |
97 | __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ | |
98 | }; | |
99 | ||
911cead7 N |
100 | #define MAX_SB_SIZE 4096 |
101 | /* bitmap super size is 256, but we round up to a sector for alignment */ | |
102 | #define BM_SUPER_SIZE 512 | |
103 | #define MAX_DEVS ((int)(MAX_SB_SIZE - sizeof(struct mdp_superblock_1)) / 2) | |
41226756 JS |
104 | #define SUPER1_SIZE (MAX_SB_SIZE + BM_SUPER_SIZE \ |
105 | + sizeof(struct misc_dev_info)) | |
911cead7 | 106 | |
bee8ec56 NB |
107 | struct misc_dev_info { |
108 | __u64 device_size; | |
109 | }; | |
110 | ||
d2cd3ffc NB |
111 | /* feature_map bits */ |
112 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
113 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
114 | * must be honoured | |
115 | */ | |
b674b5b8 | 116 | #define MD_FEATURE_RESHAPE_ACTIVE 4 |
bf95d0f3 | 117 | #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */ |
8fe1c44f N |
118 | #define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an |
119 | * active device with same 'role'. | |
120 | * 'recovery_offset' is also set. | |
121 | */ | |
122 | #define MD_FEATURE_RESHAPE_BACKWARDS 32 /* Reshape doesn't change number | |
123 | * of devices, but is going | |
124 | * backwards anyway. | |
125 | */ | |
126 | #define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */ | |
127 | #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \ | |
128 | |MD_FEATURE_RECOVERY_OFFSET \ | |
129 | |MD_FEATURE_RESHAPE_ACTIVE \ | |
130 | |MD_FEATURE_BAD_BLOCKS \ | |
131 | |MD_FEATURE_REPLACEMENT \ | |
132 | |MD_FEATURE_RESHAPE_BACKWARDS \ | |
133 | |MD_FEATURE_NEW_OFFSET \ | |
134 | ) | |
d2cd3ffc | 135 | |
570c0542 | 136 | #ifndef offsetof |
067db4df | 137 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) |
570c0542 | 138 | #endif |
82d9eba6 NB |
139 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
140 | { | |
141 | unsigned int disk_csum, csum; | |
142 | unsigned long long newcsum; | |
143 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
144 | unsigned int *isuper = (unsigned int*)sb; | |
82d9eba6 NB |
145 | |
146 | /* make sure I can count... */ | |
147 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
148 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
149 | sizeof(struct mdp_superblock_1) != 256) { | |
150 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
151 | } | |
152 | ||
153 | disk_csum = sb->sb_csum; | |
154 | sb->sb_csum = 0; | |
155 | newcsum = 0; | |
e4c72d1d | 156 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
157 | newcsum += __le32_to_cpu(*isuper); |
158 | isuper++; | |
159 | } | |
82d9eba6 NB |
160 | |
161 | if (size == 2) | |
162 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
163 | ||
164 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
165 | sb->sb_csum = disk_csum; | |
83205b64 | 166 | return __cpu_to_le32(csum); |
82d9eba6 NB |
167 | } |
168 | ||
308340aa JS |
169 | /* |
170 | * Information related to file descriptor used for aligned reads/writes. | |
171 | * Cache the block size. | |
172 | */ | |
173 | struct align_fd { | |
174 | int fd; | |
175 | int blk_sz; | |
176 | }; | |
177 | ||
178 | static void init_afd(struct align_fd *afd, int fd) | |
179 | { | |
180 | afd->fd = fd; | |
181 | ||
182 | if (ioctl(afd->fd, BLKSSZGET, &afd->blk_sz) != 0) | |
183 | afd->blk_sz = 512; | |
184 | } | |
185 | ||
5ea022a1 | 186 | static char abuf[4096+4096]; |
308340aa | 187 | static int aread(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
188 | { |
189 | /* aligned read. | |
190 | * On devices with a 4K sector size, we need to read | |
191 | * the full sector and copy relevant bits into | |
192 | * the buffer | |
193 | */ | |
6ef89052 | 194 | int bsize, iosize; |
5ea022a1 N |
195 | char *b; |
196 | int n; | |
6ef89052 | 197 | |
308340aa JS |
198 | bsize = afd->blk_sz; |
199 | ||
200 | if (!bsize || bsize > 4096 || len > 4096) { | |
201 | if (!bsize) | |
202 | fprintf(stderr, "WARNING - aread() called with " | |
203 | "invalid block size\n"); | |
5ea022a1 | 204 | return -1; |
308340aa | 205 | } |
0a2f1894 | 206 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 207 | |
6ef89052 N |
208 | for (iosize = 0; iosize < len; iosize += bsize) |
209 | ; | |
308340aa | 210 | n = read(afd->fd, b, iosize); |
5ea022a1 N |
211 | if (n <= 0) |
212 | return n; | |
308340aa | 213 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
214 | if (n > len) |
215 | n = len; | |
216 | memcpy(buf, b, n); | |
217 | return n; | |
218 | } | |
219 | ||
308340aa | 220 | static int awrite(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
221 | { |
222 | /* aligned write. | |
223 | * On devices with a 4K sector size, we need to write | |
224 | * the full sector. We pre-read if the sector is larger | |
225 | * than the write. | |
226 | * The address must be sector-aligned. | |
227 | */ | |
6ef89052 | 228 | int bsize, iosize; |
5ea022a1 N |
229 | char *b; |
230 | int n; | |
308340aa JS |
231 | |
232 | bsize = afd->blk_sz; | |
233 | if (!bsize || bsize > 4096 || len > 4096) { | |
234 | if (!bsize) | |
235 | fprintf(stderr, "WARNING - awrite() called with " | |
236 | "invalid block size\n"); | |
5ea022a1 | 237 | return -1; |
308340aa | 238 | } |
0a2f1894 | 239 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 240 | |
6ef89052 N |
241 | for (iosize = 0; iosize < len ; iosize += bsize) |
242 | ; | |
243 | ||
244 | if (len != iosize) { | |
308340aa | 245 | n = read(afd->fd, b, iosize); |
6ef89052 N |
246 | if (n <= 0) |
247 | return n; | |
308340aa | 248 | lseek(afd->fd, -n, 1); |
6ef89052 N |
249 | } |
250 | ||
5ea022a1 | 251 | memcpy(b, buf, len); |
308340aa | 252 | n = write(afd->fd, b, iosize); |
5ea022a1 N |
253 | if (n <= 0) |
254 | return n; | |
308340aa | 255 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
256 | return len; |
257 | } | |
258 | ||
c7654afc | 259 | #ifndef MDASSEMBLE |
3da92f27 | 260 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 261 | { |
3da92f27 | 262 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 263 | time_t atime; |
f21e18ca | 264 | unsigned int d; |
e8e1c176 | 265 | int role; |
4180aa4d | 266 | int delta_extra = 0; |
82d9eba6 NB |
267 | int i; |
268 | char *c; | |
a1cbd7d0 | 269 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 270 | int layout; |
a17a3de3 | 271 | unsigned long long sb_offset; |
82d9eba6 NB |
272 | |
273 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
274 | printf(" Version : 1"); |
275 | sb_offset = __le64_to_cpu(sb->super_offset); | |
276 | if (sb_offset <= 4) | |
277 | printf(".1\n"); | |
278 | else if (sb_offset <= 8) | |
279 | printf(".2\n"); | |
280 | else | |
281 | printf(".0\n"); | |
91eedefc | 282 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
283 | printf(" Array UUID : "); |
284 | for (i=0; i<16; i++) { | |
82d9eba6 | 285 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 286 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
287 | } |
288 | printf("\n"); | |
a1cbd7d0 NB |
289 | printf(" Name : %.32s", sb->set_name); |
290 | if (l > 0 && l < 32 && | |
291 | sb->set_name[l] == ':' && | |
292 | strncmp(sb->set_name, homehost, l) == 0) | |
293 | printf(" (local to host %s)", homehost); | |
294 | printf("\n"); | |
82d9eba6 NB |
295 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
296 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
297 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
298 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
299 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
300 | printf("\n"); | |
5cda0964 | 301 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
302 | (unsigned long long)__le64_to_cpu(sb->data_size), |
303 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 304 | if (__le32_to_cpu(sb->level) > 0) { |
d4633e06 | 305 | int ddsks = 0, ddsks_denom = 1; |
b674b5b8 NB |
306 | switch(__le32_to_cpu(sb->level)) { |
307 | case 1: ddsks=1;break; | |
308 | case 4: | |
83205b64 NB |
309 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
310 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
311 | case 10: | |
312 | layout = __le32_to_cpu(sb->layout); | |
d4633e06 N |
313 | ddsks = __le32_to_cpu(sb->raid_disks); |
314 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
b674b5b8 | 315 | } |
d4633e06 N |
316 | if (ddsks) { |
317 | long long asize = __le64_to_cpu(sb->size); | |
318 | asize = (asize << 9) * ddsks / ddsks_denom; | |
83205b64 | 319 | printf(" Array Size : %llu%s\n", |
d4633e06 N |
320 | asize >> 10, human_size(asize)); |
321 | } | |
b674b5b8 | 322 | if (sb->size != sb->data_size) |
5cda0964 | 323 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
324 | (unsigned long long)__le64_to_cpu(sb->size), |
325 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 326 | } |
82d9eba6 | 327 | if (sb->data_offset) |
199171a2 NB |
328 | printf(" Data Offset : %llu sectors\n", |
329 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
8fe1c44f N |
330 | if (sb->new_offset) { |
331 | unsigned long long offset = __le64_to_cpu(sb->data_offset); | |
332 | offset += (signed)(int32_t)__le32_to_cpu(sb->new_offset); | |
333 | printf(" New Offset : %llu sectors\n", offset); | |
334 | } | |
199171a2 NB |
335 | printf(" Super Offset : %llu sectors\n", |
336 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc NB |
337 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
338 | printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
a3fd117c | 339 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
340 | printf(" Device UUID : "); |
341 | for (i=0; i<16; i++) { | |
82d9eba6 | 342 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 343 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
344 | } |
345 | printf("\n"); | |
b674b5b8 | 346 | printf("\n"); |
91eedefc NB |
347 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
348 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 349 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
8fac0577 | 350 | } |
bf95d0f3 | 351 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 352 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
353 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
354 | if (__le32_to_cpu(sb->delta_disks)) { | |
355 | printf(" Delta Devices : %d", __le32_to_cpu(sb->delta_disks)); | |
4180aa4d N |
356 | printf(" (%d->%d)\n", |
357 | __le32_to_cpu(sb->raid_disks)-__le32_to_cpu(sb->delta_disks), | |
358 | __le32_to_cpu(sb->raid_disks)); | |
359 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
360 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
361 | } |
362 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
363 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
364 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
365 | } | |
366 | if (__le32_to_cpu(sb->new_layout) != __le32_to_cpu(sb->layout)) { | |
367 | if (__le32_to_cpu(sb->level) == 5) { | |
368 | c = map_num(r5layout, __le32_to_cpu(sb->new_layout)); | |
369 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
370 | } | |
fe77a154 N |
371 | if (__le32_to_cpu(sb->level) == 6) { |
372 | c = map_num(r6layout, __le32_to_cpu(sb->new_layout)); | |
373 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
374 | } | |
b674b5b8 | 375 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
376 | printf(" New Layout :"); |
377 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
378 | printf("\n"); | |
b674b5b8 NB |
379 | } |
380 | } | |
381 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
382 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
383 | printf("\n"); | |
384 | } | |
dfd4d8ee | 385 | if (sb->devflags) { |
62184891 | 386 | printf(" Flags :"); |
34163fc7 | 387 | if (sb->devflags & WriteMostly1) |
dfd4d8ee NB |
388 | printf(" write-mostly"); |
389 | printf("\n"); | |
390 | } | |
82d9eba6 NB |
391 | |
392 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
393 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
394 | ||
bf95d0f3 N |
395 | if (sb->bblog_size && sb->bblog_offset) { |
396 | printf(" Bad Block Log : %d entries available at offset %ld sectors", | |
397 | __le16_to_cpu(sb->bblog_size)*512/8, | |
398 | (long)__le32_to_cpu(sb->bblog_offset)); | |
399 | if (sb->feature_map & | |
400 | __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
401 | printf(" - bad blocks present."); | |
402 | printf("\n"); | |
403 | } | |
404 | ||
405 | ||
82d9eba6 NB |
406 | if (calc_sb_1_csum(sb) == sb->sb_csum) |
407 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
408 | else | |
409 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
410 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 411 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
412 | printf("\n"); |
413 | if (__le32_to_cpu(sb->level) == 5) { | |
414 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
415 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
416 | } | |
fe77a154 N |
417 | if (__le32_to_cpu(sb->level) == 6) { |
418 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
419 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
420 | } | |
265e0f17 NB |
421 | if (__le32_to_cpu(sb->level) == 10) { |
422 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
423 | printf(" Layout :"); |
424 | print_r10_layout(lo); | |
425 | printf("\n"); | |
265e0f17 | 426 | } |
82d9eba6 NB |
427 | switch(__le32_to_cpu(sb->level)) { |
428 | case 0: | |
429 | case 4: | |
430 | case 5: | |
d2cd3ffc NB |
431 | case 6: |
432 | case 10: | |
b674b5b8 | 433 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
434 | break; |
435 | case -1: | |
b674b5b8 | 436 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
437 | break; |
438 | default: break; | |
439 | } | |
440 | printf("\n"); | |
e8e1c176 N |
441 | #if 0 |
442 | /* This turns out to just be confusing */ | |
c3684618 NB |
443 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
444 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
445 | if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff) | |
446 | break; | |
447 | for (d=0; d < i; d++) { | |
448 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
449 | if (d) printf(", "); | |
450 | if (role == 0xffff) printf("empty"); | |
451 | else if(role == 0xfffe) printf("failed"); | |
452 | else printf("%d", role); | |
453 | } | |
454 | printf(")\n"); | |
e8e1c176 N |
455 | #endif |
456 | printf(" Device Role : "); | |
457 | d = __le32_to_cpu(sb->dev_number); | |
4180aa4d | 458 | if (d < __le32_to_cpu(sb->max_dev)) |
e8e1c176 N |
459 | role = __le16_to_cpu(sb->dev_roles[d]); |
460 | else | |
461 | role = 0xFFFF; | |
462 | if (role >= 0xFFFE) | |
463 | printf("spare\n"); | |
24c7bc84 N |
464 | else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_REPLACEMENT)) |
465 | printf("Replacement device %d\n", role); | |
e8e1c176 N |
466 | else |
467 | printf("Active device %d\n", role); | |
468 | ||
82d9eba6 | 469 | printf(" Array State : "); |
4180aa4d | 470 | for (d=0; d<__le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 471 | int cnt = 0; |
f21e18ca | 472 | unsigned int i; |
82d9eba6 | 473 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 474 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 475 | if (role == d) |
82d9eba6 | 476 | cnt++; |
82d9eba6 | 477 | } |
24c7bc84 N |
478 | if (cnt == 2) |
479 | printf("R"); | |
480 | else if (cnt == 1) | |
481 | printf("A"); | |
482 | else if (cnt == 0) | |
483 | printf("."); | |
484 | else | |
485 | printf("?"); | |
82d9eba6 | 486 | } |
e8e1c176 N |
487 | #if 0 |
488 | /* This is confusing too */ | |
6fbba4c9 | 489 | faulty = 0; |
82d9eba6 NB |
490 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
491 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
6fbba4c9 NB |
492 | if (role == 0xFFFE) |
493 | faulty++; | |
82d9eba6 | 494 | } |
82d9eba6 | 495 | if (faulty) printf(" %d failed", faulty); |
e8e1c176 | 496 | #endif |
24c7bc84 | 497 | printf(" ('A' == active, '.' == missing, 'R' == replacing)"); |
82d9eba6 NB |
498 | printf("\n"); |
499 | } | |
500 | ||
501 | ||
061f2c6a | 502 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 503 | { |
3da92f27 | 504 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 505 | int i; |
a17a3de3 | 506 | unsigned long long sb_offset; |
2998bc01 | 507 | char *nm; |
b015e6c2 | 508 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
509 | |
510 | nm = strchr(sb->set_name, ':'); | |
511 | if (nm) | |
512 | nm++; | |
513 | else if (sb->set_name[0]) | |
514 | nm = sb->set_name; | |
515 | else | |
cf8de691 | 516 | nm = NULL; |
82d9eba6 | 517 | |
7103b9b8 N |
518 | printf("ARRAY "); |
519 | if (nm) { | |
520 | printf("/dev/md/"); | |
521 | print_escape(nm); | |
522 | putchar(' '); | |
523 | } | |
061f2c6a N |
524 | if (verbose && c) |
525 | printf(" level=%s", c); | |
a17a3de3 DL |
526 | sb_offset = __le64_to_cpu(sb->super_offset); |
527 | if (sb_offset <= 4) | |
e9a0e728 | 528 | printf(" metadata=1.1 "); |
a17a3de3 | 529 | else if (sb_offset <= 8) |
e9a0e728 | 530 | printf(" metadata=1.2 "); |
a17a3de3 | 531 | else |
e9a0e728 | 532 | printf(" metadata=1.0 "); |
061f2c6a N |
533 | if (verbose) |
534 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
535 | printf("UUID="); | |
82d9eba6 | 536 | for (i=0; i<16; i++) { |
82d9eba6 | 537 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 538 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 539 | } |
7103b9b8 N |
540 | if (sb->set_name[0]) { |
541 | printf(" name="); | |
542 | print_quoted(sb->set_name); | |
543 | } | |
82d9eba6 NB |
544 | printf("\n"); |
545 | } | |
546 | ||
0d726f17 KS |
547 | static void export_examine_super1(struct supertype *st) |
548 | { | |
549 | struct mdp_superblock_1 *sb = st->sb; | |
550 | int i; | |
551 | int len = 32; | |
80730bae | 552 | int layout; |
0d726f17 KS |
553 | |
554 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
555 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
556 | for (i=0; i<32; i++) | |
557 | if (sb->set_name[i] == '\n' || | |
558 | sb->set_name[i] == '\0') { | |
559 | len = i; | |
560 | break; | |
561 | } | |
562 | if (len) | |
563 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
80730bae MN |
564 | if (__le32_to_cpu(sb->level) > 0) { |
565 | int ddsks = 0, ddsks_denom = 1; | |
566 | switch(__le32_to_cpu(sb->level)) { | |
567 | case 1: ddsks=1;break; | |
568 | case 4: | |
569 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; | |
570 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
571 | case 10: | |
572 | layout = __le32_to_cpu(sb->layout); | |
573 | ddsks = __le32_to_cpu(sb->raid_disks); | |
574 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
575 | } | |
576 | if (ddsks) { | |
577 | long long asize = __le64_to_cpu(sb->size); | |
578 | asize = (asize << 9) * ddsks / ddsks_denom; | |
579 | printf("MD_ARRAY_SIZE=%s\n",human_size_brief(asize,JEDEC)); | |
580 | } | |
581 | } | |
0d726f17 KS |
582 | printf("MD_UUID="); |
583 | for (i=0; i<16; i++) { | |
584 | if ((i&3)==0 && i != 0) printf(":"); | |
585 | printf("%02x", sb->set_uuid[i]); | |
586 | } | |
587 | printf("\n"); | |
588 | printf("MD_UPDATE_TIME=%llu\n", | |
589 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
590 | printf("MD_DEV_UUID="); | |
591 | for (i=0; i<16; i++) { | |
592 | if ((i&3)==0 && i != 0) printf(":"); | |
593 | printf("%02x", sb->device_uuid[i]); | |
594 | } | |
595 | printf("\n"); | |
596 | printf("MD_EVENTS=%llu\n", | |
597 | (unsigned long long)__le64_to_cpu(sb->events)); | |
598 | } | |
599 | ||
3da92f27 | 600 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 601 | { |
3da92f27 | 602 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 603 | int i; |
b6750aa8 | 604 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 605 | |
b6750aa8 NB |
606 | printf(" Name : %.32s", sb->set_name); |
607 | if (l > 0 && l < 32 && | |
608 | sb->set_name[l] == ':' && | |
609 | strncmp(sb->set_name, homehost, l) == 0) | |
610 | printf(" (local to host %s)", homehost); | |
611 | printf("\n UUID : "); | |
82d9eba6 | 612 | for (i=0; i<16; i++) { |
82d9eba6 | 613 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 614 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 615 | } |
570c0542 | 616 | printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
617 | } |
618 | ||
3da92f27 | 619 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 620 | { |
3da92f27 | 621 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
622 | int i; |
623 | ||
7103b9b8 N |
624 | if (sb->set_name[0]) { |
625 | printf(" name="); | |
626 | print_quoted(sb->set_name); | |
627 | } | |
82d9eba6 NB |
628 | printf(" UUID="); |
629 | for (i=0; i<16; i++) { | |
82d9eba6 | 630 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 631 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
632 | } |
633 | } | |
634 | ||
0d726f17 | 635 | static void export_detail_super1(struct supertype *st) |
54bad364 | 636 | { |
3da92f27 | 637 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
638 | int i; |
639 | int len = 32; | |
640 | ||
641 | for (i=0; i<32; i++) | |
642 | if (sb->set_name[i] == '\n' || | |
643 | sb->set_name[i] == '\0') { | |
644 | len = i; | |
645 | break; | |
646 | } | |
647 | if (len) | |
648 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
649 | } |
650 | ||
6d388a88 N |
651 | static int examine_badblocks_super1(struct supertype *st, int fd, char *devname) |
652 | { | |
653 | struct mdp_superblock_1 *sb = st->sb; | |
654 | unsigned long long offset; | |
655 | int size; | |
656 | __u64 *bbl, *bbp; | |
657 | int i; | |
658 | ||
659 | if (!sb->bblog_size || __le32_to_cpu(sb->bblog_size) > 100 | |
660 | || !sb->bblog_offset){ | |
661 | printf("No bad-blocks list configured on %s\n", devname); | |
662 | return 0; | |
663 | } | |
664 | if ((sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
665 | == 0) { | |
666 | printf("Bad-blocks list is empty in %s\n", devname); | |
667 | return 0; | |
668 | } | |
669 | ||
670 | size = __le32_to_cpu(sb->bblog_size)* 512; | |
671 | posix_memalign((void**)&bbl, 4096, size); | |
672 | offset = __le64_to_cpu(sb->super_offset) + | |
673 | (int)__le32_to_cpu(sb->bblog_offset); | |
674 | offset <<= 9; | |
675 | if (lseek64(fd, offset, 0) < 0) { | |
676 | pr_err("Cannot seek to bad-blocks list\n"); | |
677 | return 1; | |
678 | } | |
679 | if (read(fd, bbl, size) != size) { | |
680 | pr_err("Cannot read bad-blocks list\n"); | |
681 | return 1; | |
682 | } | |
683 | /* 64bits per entry. 10 bits is block-count, 54 bits is block | |
684 | * offset. Blocks are sectors unless bblog->shift makes them bigger | |
685 | */ | |
686 | bbp = (__u64*)bbl; | |
687 | printf("Bad-blocks on %s:\n", devname); | |
688 | for (i = 0; i < size/8; i++, bbp++) { | |
689 | __u64 bb = __le64_to_cpu(*bbp); | |
690 | int count = bb & 0x3ff; | |
691 | unsigned long long sector = bb >> 10; | |
692 | ||
693 | if (bb + 1 == 0) | |
694 | break; | |
695 | ||
696 | sector <<= sb->bblog_shift; | |
697 | count <<= sb->bblog_shift; | |
698 | ||
699 | printf("%20llu for %d sectors\n", sector, count); | |
700 | } | |
701 | return 0; | |
702 | } | |
703 | ||
c7654afc NB |
704 | #endif |
705 | ||
3da92f27 | 706 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 707 | { |
3da92f27 | 708 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
709 | int l = homehost ? strlen(homehost) : 0; |
710 | ||
711 | return (l > 0 && l < 32 && | |
712 | sb->set_name[l] == ':' && | |
713 | strncmp(sb->set_name, homehost, l) == 0); | |
714 | } | |
715 | ||
3da92f27 | 716 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 717 | { |
3da92f27 | 718 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
719 | char *cuuid = (char*)uuid; |
720 | int i; | |
721 | for (i=0; i<16; i++) | |
722 | cuuid[i] = super->set_uuid[i]; | |
723 | } | |
724 | ||
a5d85af7 | 725 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 726 | { |
3da92f27 | 727 | struct mdp_superblock_1 *sb = st->sb; |
80bf9135 N |
728 | struct bitmap_super_s *bsb = (void*)(((char*)sb)+MAX_SB_SIZE); |
729 | struct misc_dev_info *misc = (void*)(((char*)sb)+MAX_SB_SIZE+BM_SUPER_SIZE); | |
82d9eba6 | 730 | int working = 0; |
f21e18ca | 731 | unsigned int i; |
a5d85af7 N |
732 | unsigned int role; |
733 | unsigned int map_disks = info->array.raid_disks; | |
80bf9135 N |
734 | unsigned long long super_offset; |
735 | unsigned long long data_size; | |
82d9eba6 | 736 | |
95eeceeb | 737 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 738 | info->array.major_version = 1; |
b8ac1967 | 739 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
740 | info->array.patch_version = 0; |
741 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
742 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 743 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
744 | info->array.md_minor = -1; |
745 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 746 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 747 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c | 748 | info->array.state = |
d5977056 | 749 | (__le64_to_cpu(sb->resync_offset) == MaxSector) |
4855f95c | 750 | ? 1 : 0; |
353632d9 NB |
751 | |
752 | info->data_offset = __le64_to_cpu(sb->data_offset); | |
753 | info->component_size = __le64_to_cpu(sb->size); | |
c0c1acd6 | 754 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) |
34a13953 | 755 | info->bitmap_offset = (int32_t)__le32_to_cpu(sb->bitmap_offset); |
82d9eba6 NB |
756 | |
757 | info->disk.major = 0; | |
758 | info->disk.minor = 0; | |
fbf8a0b7 | 759 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 | 760 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
911cead7 | 761 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) |
82d9eba6 NB |
762 | role = 0xfffe; |
763 | else | |
764 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
765 | ||
80bf9135 N |
766 | super_offset = __le64_to_cpu(sb->super_offset); |
767 | data_size = __le64_to_cpu(sb->size); | |
768 | if (info->data_offset < super_offset) { | |
769 | unsigned long long end; | |
770 | info->space_before = info->data_offset; | |
771 | end = super_offset; | |
772 | if (info->bitmap_offset < 0) | |
773 | end += info->bitmap_offset; | |
774 | if (info->data_offset + data_size < end) | |
775 | info->space_after = end - data_size - info->data_offset; | |
776 | else | |
777 | info->space_after = 0; | |
778 | } else { | |
779 | info->space_before = (info->data_offset - | |
780 | super_offset); | |
781 | if (info->bitmap_offset > 0) { | |
782 | unsigned long long bmend = info->bitmap_offset; | |
783 | unsigned long long size = __le64_to_cpu(bsb->sync_size); | |
784 | size /= __le32_to_cpu(bsb->chunksize) >> 9; | |
785 | size = (size + 7) >> 3; | |
786 | size += sizeof(bitmap_super_t); | |
787 | size = ROUND_UP(size, 4096); | |
788 | size /= 512; | |
789 | size += bmend; | |
790 | if (size < info->space_before) | |
791 | info->space_before -= size; | |
792 | else | |
793 | info->space_before = 0; | |
794 | } else | |
795 | info->space_before -= 8; /* superblock */ | |
796 | info->space_after = misc->device_size - data_size - info->data_offset; | |
797 | } | |
798 | ||
82d9eba6 NB |
799 | info->disk.raid_disk = -1; |
800 | switch(role) { | |
801 | case 0xFFFF: | |
f22385f9 | 802 | info->disk.state = 0; /* spare: not active, not sync, not faulty */ |
82d9eba6 NB |
803 | break; |
804 | case 0xFFFE: | |
805 | info->disk.state = 1; /* faulty */ | |
806 | break; | |
807 | default: | |
808 | info->disk.state = 6; /* active and in sync */ | |
809 | info->disk.raid_disk = role; | |
810 | } | |
cb099724 N |
811 | if (sb->devflags & WriteMostly1) |
812 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
82d9eba6 | 813 | info->events = __le64_to_cpu(sb->events); |
1522c538 | 814 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 815 | info->safe_mode_delay = 200; |
82d9eba6 NB |
816 | |
817 | memcpy(info->uuid, sb->set_uuid, 16); | |
818 | ||
31317663 NB |
819 | strncpy(info->name, sb->set_name, 32); |
820 | info->name[32] = 0; | |
947fd4dd | 821 | |
aacb2f81 | 822 | if ((__le32_to_cpu(sb->feature_map)&MD_FEATURE_REPLACEMENT)) { |
72e7fb13 | 823 | info->disk.state &= ~(1 << MD_DISK_SYNC); |
aacb2f81 N |
824 | info->disk.state |= 1 << MD_DISK_REPLACEMENT; |
825 | } | |
826 | ||
827 | ||
921d9e16 N |
828 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
829 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
830 | else | |
831 | info->recovery_start = MaxSector; | |
832 | ||
353632d9 NB |
833 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
834 | info->reshape_active = 1; | |
5e88ab2e N |
835 | if (info->array.level == 10) |
836 | info->reshape_active |= RESHAPE_NO_BACKUP; | |
353632d9 NB |
837 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); |
838 | info->new_level = __le32_to_cpu(sb->new_level); | |
839 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
840 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 841 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
842 | if (info->delta_disks < 0) |
843 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
844 | } else |
845 | info->reshape_active = 0; | |
846 | ||
6e75048b AK |
847 | info->recovery_blocked = info->reshape_active; |
848 | ||
a5d85af7 N |
849 | if (map) |
850 | for (i=0; i<map_disks; i++) | |
851 | map[i] = 0; | |
f21e18ca | 852 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 853 | role = __le16_to_cpu(sb->dev_roles[i]); |
a5d85af7 | 854 | if (/*role == 0xFFFF || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 855 | working++; |
a5d85af7 N |
856 | if (map && role < map_disks) |
857 | map[role] = 1; | |
858 | } | |
82d9eba6 NB |
859 | } |
860 | ||
861 | info->array.working_disks = working; | |
862 | } | |
863 | ||
00bbdbda N |
864 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
865 | { | |
866 | struct mdinfo *info; | |
867 | ||
868 | if (subarray) | |
869 | return NULL; | |
870 | ||
503975b9 | 871 | info = xmalloc(sizeof(*info)); |
00bbdbda N |
872 | getinfo_super1(st, info, NULL); |
873 | return info; | |
874 | } | |
875 | ||
68c7d6d7 | 876 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 877 | char *update, |
e5eac01f NB |
878 | char *devname, int verbose, |
879 | int uuid_set, char *homehost) | |
82d9eba6 | 880 | { |
5a31170d N |
881 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
882 | * if any change was made. For others, the return value is | |
883 | * ignored. | |
c4d831e1 | 884 | */ |
82d9eba6 | 885 | int rv = 0; |
3da92f27 | 886 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 887 | |
def11332 N |
888 | if (strcmp(update, "homehost") == 0 && |
889 | homehost) { | |
890 | /* Note that 'homehost' is special as it is really | |
891 | * a "name" update. | |
892 | */ | |
893 | char *c; | |
894 | update = "name"; | |
895 | c = strchr(sb->set_name, ':'); | |
896 | if (c) | |
897 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
898 | else | |
899 | strncpy(info->name, sb->set_name, 32); | |
900 | info->name[32] = 0; | |
901 | } | |
902 | ||
67a8c82d NB |
903 | if (strcmp(update, "force-one")==0) { |
904 | /* Not enough devices for a working array, | |
905 | * so bring this one up-to-date | |
906 | */ | |
c4d831e1 NB |
907 | if (sb->events != __cpu_to_le64(info->events)) |
908 | rv = 1; | |
6d3d5804 | 909 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 910 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
911 | /* Degraded array and 'force' requests to |
912 | * maybe need to mark it 'clean'. | |
913 | */ | |
82d9eba6 NB |
914 | switch(__le32_to_cpu(sb->level)) { |
915 | case 5: case 4: case 6: | |
916 | /* need to force clean */ | |
b7528a20 | 917 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 918 | rv = 1; |
b7528a20 | 919 | sb->resync_offset = MaxSector; |
82d9eba6 | 920 | } |
1e2b2765 | 921 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
922 | int d = info->disk.number; |
923 | int want; | |
aacb2f81 | 924 | if (info->disk.state & (1<<MD_DISK_ACTIVE)) |
a2ce5a1a | 925 | want = info->disk.raid_disk; |
82d9eba6 NB |
926 | else |
927 | want = 0xFFFF; | |
a2ce5a1a N |
928 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
929 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
930 | rv = 1; |
931 | } | |
d43494fc N |
932 | if (info->reshape_active && |
933 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
934 | info->delta_disks >= 0 && | |
935 | info->reshape_progress < __le64_to_cpu(sb->reshape_position)) { | |
936 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
937 | rv = 1; | |
938 | } | |
939 | if (info->reshape_active && | |
940 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
941 | info->delta_disks < 0 && | |
942 | info->reshape_progress > __le64_to_cpu(sb->reshape_position)) { | |
943 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
944 | rv = 1; | |
945 | } | |
1e2b2765 | 946 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 947 | unsigned int i; |
1c6cb603 | 948 | int rfd, fd; |
f21e18ca | 949 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f NB |
950 | |
951 | for (i=0 ; i < max ; i++) | |
952 | if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe) | |
953 | break; | |
954 | sb->dev_number = __cpu_to_le32(i); | |
955 | info->disk.number = i; | |
956 | if (max >= __le32_to_cpu(sb->max_dev)) | |
957 | sb->max_dev = __cpu_to_le32(max+1); | |
958 | ||
959 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
960 | read(rfd, sb->device_uuid, 16) != 16) { | |
caa0f6c6 N |
961 | __u32 r[4] = {random(), random(), random(), random()}; |
962 | memcpy(sb->device_uuid, r, 16); | |
f752781f | 963 | } |
7cbeb80e N |
964 | if (rfd >= 0) |
965 | close(rfd); | |
f752781f NB |
966 | |
967 | sb->dev_roles[i] = | |
968 | __cpu_to_le16(info->disk.raid_disk); | |
1c6cb603 N |
969 | |
970 | fd = open(devname, O_RDONLY); | |
971 | if (fd >= 0) { | |
972 | unsigned long long ds; | |
973 | get_dev_size(fd, devname, &ds); | |
974 | close(fd); | |
975 | ds >>= 9; | |
976 | if (__le64_to_cpu(sb->super_offset) < | |
977 | __le64_to_cpu(sb->data_offset)) { | |
978 | sb->data_size = __cpu_to_le64( | |
979 | ds - __le64_to_cpu(sb->data_offset)); | |
980 | } else { | |
981 | ds -= 8*2; | |
982 | ds &= ~(unsigned long long)(4*2-1); | |
983 | sb->super_offset = __cpu_to_le64(ds); | |
984 | sb->data_size = __cpu_to_le64( | |
985 | ds - __le64_to_cpu(sb->data_offset)); | |
986 | } | |
987 | } | |
1e2b2765 | 988 | } else if (strcmp(update, "linear-grow-update") == 0) { |
82d9eba6 | 989 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
990 | sb->dev_roles[info->disk.number] = |
991 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 992 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 993 | /* make sure resync happens */ |
434b7755 | 994 | sb->resync_offset = 0ULL; |
1e2b2765 | 995 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 996 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 997 | |
14263cf1 NB |
998 | if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) { |
999 | struct bitmap_super_s *bm; | |
911cead7 | 1000 | bm = (struct bitmap_super_s*)(st->sb+MAX_SB_SIZE); |
bf4fb153 | 1001 | memcpy(bm->uuid, sb->set_uuid, 16); |
14263cf1 | 1002 | } |
5a31170d N |
1003 | } else if (strcmp(update, "no-bitmap") == 0) { |
1004 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
688e99a7 N |
1005 | } else if (strcmp(update, "bbl") == 0) { |
1006 | /* only possible if there is room after the bitmap, or if | |
1007 | * there is no bitmap | |
1008 | */ | |
1009 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1010 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
1011 | long bitmap_offset = (long)__le64_to_cpu(sb->bitmap_offset); | |
1012 | long bm_sectors = 0; | |
1013 | long space; | |
1014 | ||
1015 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1016 | struct bitmap_super_s *bsb; | |
1017 | bsb = (struct bitmap_super_s *)(((char*)sb)+MAX_SB_SIZE); | |
1018 | bm_sectors = bitmap_sectors(bsb); | |
1019 | } | |
1020 | ||
1021 | if (sb_offset < data_offset) { | |
1022 | /* 1.1 or 1.2. Put bbl just before data | |
1023 | */ | |
1024 | long bb_offset; | |
1025 | space = data_offset - sb_offset; | |
1026 | bb_offset = space - 8; | |
1027 | if (bm_sectors && bitmap_offset > 0) | |
1028 | space -= (bitmap_offset + bm_sectors); | |
1029 | else | |
1030 | space -= 8; /* The superblock */ | |
1031 | if (space >= 8) { | |
1032 | sb->bblog_size = __cpu_to_le16(8); | |
1033 | sb->bblog_offset = __cpu_to_le32(bb_offset); | |
1034 | } | |
1035 | } else { | |
1036 | /* 1.0 - Put bbl just before super block */ | |
1037 | if (bm_sectors && bitmap_offset < 0) | |
1038 | space = -bitmap_offset - bm_sectors; | |
1039 | else | |
1040 | space = sb_offset - data_offset - | |
1041 | __le64_to_cpu(sb->data_size); | |
1042 | if (space >= 8) { | |
1043 | sb->bblog_size = __cpu_to_le16(8); | |
1044 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1045 | } | |
1046 | } | |
1047 | } else if (strcmp(update, "no-bbl") == 0) { | |
1048 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
1049 | pr_err("Cannot remove active bbl from %s\n",devname); | |
1050 | else { | |
1051 | sb->bblog_size = 0; | |
1052 | sb->bblog_shift = 0; | |
1053 | sb->bblog_offset = 0; | |
1054 | } | |
1e2b2765 | 1055 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
1056 | if (info->name[0] == 0) |
1057 | sprintf(info->name, "%d", info->array.md_minor); | |
1058 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
1059 | if (homehost && | |
1060 | strchr(info->name, ':') == NULL && | |
1061 | strlen(homehost)+1+strlen(info->name) < 32) { | |
1062 | strcpy(sb->set_name, homehost); | |
1063 | strcat(sb->set_name, ":"); | |
1064 | strcat(sb->set_name, info->name); | |
1065 | } else | |
1066 | strcpy(sb->set_name, info->name); | |
1e2b2765 | 1067 | } else if (strcmp(update, "devicesize") == 0 && |
bee8ec56 NB |
1068 | __le64_to_cpu(sb->super_offset) < |
1069 | __le64_to_cpu(sb->data_offset)) { | |
1070 | /* set data_size to device size less data_offset */ | |
1071 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
911cead7 | 1072 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); |
eb9199fb NB |
1073 | printf("Size was %llu\n", (unsigned long long) |
1074 | __le64_to_cpu(sb->data_size)); | |
bee8ec56 NB |
1075 | sb->data_size = __cpu_to_le64( |
1076 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
eb9199fb NB |
1077 | printf("Size is %llu\n", (unsigned long long) |
1078 | __le64_to_cpu(sb->data_size)); | |
1e2b2765 | 1079 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 1080 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
16715c01 DL |
1081 | else if (strcmp(update, "writemostly")==0) |
1082 | sb->devflags |= WriteMostly1; | |
1083 | else if (strcmp(update, "readwrite")==0) | |
1084 | sb->devflags &= ~WriteMostly1; | |
1e2b2765 N |
1085 | else |
1086 | rv = -1; | |
82d9eba6 NB |
1087 | |
1088 | sb->sb_csum = calc_sb_1_csum(sb); | |
1089 | return rv; | |
1090 | } | |
1091 | ||
3da92f27 | 1092 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
83cd1e97 N |
1093 | unsigned long long size, char *name, char *homehost, |
1094 | int *uuid, unsigned long long data_offset) | |
82d9eba6 | 1095 | { |
6416d527 | 1096 | struct mdp_superblock_1 *sb; |
82d9eba6 | 1097 | int spares; |
34163fc7 | 1098 | int rfd; |
05697ec1 | 1099 | char defname[10]; |
911cead7 | 1100 | int sbsize; |
6416d527 | 1101 | |
3c0bcd46 | 1102 | if (posix_memalign((void**)&sb, 4096, SUPER1_SIZE) != 0) { |
e7b84f9d | 1103 | pr_err("%s could not allocate superblock\n", __func__); |
3d2c4fc7 DW |
1104 | return 0; |
1105 | } | |
1afa9308 | 1106 | memset(sb, 0, SUPER1_SIZE); |
82d9eba6 | 1107 | |
64557c33 | 1108 | st->sb = sb; |
ba7eb04f | 1109 | if (info == NULL) { |
82d9eba6 NB |
1110 | /* zeroing superblock */ |
1111 | return 0; | |
05697ec1 | 1112 | } |
82d9eba6 NB |
1113 | |
1114 | spares = info->working_disks - info->active_disks; | |
911cead7 | 1115 | if (info->raid_disks + spares > MAX_DEVS) { |
e7b84f9d | 1116 | pr_err("too many devices requested: %d+%d > %d\n", |
911cead7 | 1117 | info->raid_disks , spares, MAX_DEVS); |
82d9eba6 NB |
1118 | return 0; |
1119 | } | |
1120 | ||
82d9eba6 NB |
1121 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
1122 | sb->major_version = __cpu_to_le32(1); | |
1123 | sb->feature_map = 0; | |
1124 | sb->pad0 = 0; | |
34163fc7 | 1125 | |
350f29f9 NB |
1126 | if (uuid) |
1127 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
1128 | else { | |
3d3dd91e NB |
1129 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
1130 | read(rfd, sb->set_uuid, 16) != 16) { | |
caa0f6c6 N |
1131 | __u32 r[4] = {random(), random(), random(), random()}; |
1132 | memcpy(sb->set_uuid, r, 16); | |
3d3dd91e NB |
1133 | } |
1134 | if (rfd >= 0) close(rfd); | |
34163fc7 | 1135 | } |
82d9eba6 | 1136 | |
05697ec1 NB |
1137 | if (name == NULL || *name == 0) { |
1138 | sprintf(defname, "%d", info->md_minor); | |
1139 | name = defname; | |
1140 | } | |
05697ec1 NB |
1141 | if (homehost && |
1142 | strchr(name, ':')== NULL && | |
1143 | strlen(homehost)+1+strlen(name) < 32) { | |
1144 | strcpy(sb->set_name, homehost); | |
1145 | strcat(sb->set_name, ":"); | |
1146 | strcat(sb->set_name, name); | |
1147 | } else | |
1148 | strcpy(sb->set_name, name); | |
82d9eba6 NB |
1149 | |
1150 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
1151 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 1152 | sb->layout = __cpu_to_le32(info->layout); |
5dd497ee | 1153 | sb->size = __cpu_to_le64(size*2ULL); |
82d9eba6 NB |
1154 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
1155 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
1156 | ||
83cd1e97 | 1157 | sb->data_offset = __cpu_to_le64(data_offset); |
82d9eba6 NB |
1158 | sb->data_size = __cpu_to_le64(0); |
1159 | sb->super_offset = __cpu_to_le64(0); | |
1160 | sb->recovery_offset = __cpu_to_le64(0); | |
1161 | ||
1162 | sb->utime = sb->ctime; | |
1163 | sb->events = __cpu_to_le64(1); | |
34321279 | 1164 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 1165 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
1166 | else |
1167 | sb->resync_offset = 0; | |
911cead7 N |
1168 | sbsize = sizeof(struct mdp_superblock_1) + 2 * (info->raid_disks + spares); |
1169 | sbsize = ROUND_UP(sbsize, 512); | |
1170 | sb->max_dev = __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
82d9eba6 | 1171 | |
911cead7 | 1172 | memset(sb->dev_roles, 0xff, MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); |
82d9eba6 | 1173 | |
82d9eba6 NB |
1174 | return 1; |
1175 | } | |
1176 | ||
111d01fc NB |
1177 | struct devinfo { |
1178 | int fd; | |
1179 | char *devname; | |
72ca9bcf | 1180 | long long data_offset; |
111d01fc NB |
1181 | mdu_disk_info_t disk; |
1182 | struct devinfo *next; | |
1183 | }; | |
0e600426 | 1184 | #ifndef MDASSEMBLE |
82d9eba6 | 1185 | /* Add a device to the superblock being created */ |
f20c3968 | 1186 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
72ca9bcf | 1187 | int fd, char *devname, unsigned long long data_offset) |
82d9eba6 | 1188 | { |
3da92f27 | 1189 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 1190 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc NB |
1191 | struct devinfo *di, **dip; |
1192 | ||
dfd4d8ee | 1193 | if ((dk->state & 6) == 6) /* active, sync */ |
82d9eba6 | 1194 | *rp = __cpu_to_le16(dk->raid_disk); |
412ca2e5 | 1195 | else if ((dk->state & ~2) == 0) /* active or idle -> spare */ |
82d9eba6 | 1196 | *rp = 0xffff; |
34163fc7 | 1197 | else |
82d9eba6 | 1198 | *rp = 0xfffe; |
111d01fc | 1199 | |
f21e18ca | 1200 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
911cead7 | 1201 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) |
9df04a4f | 1202 | sb->max_dev = __cpu_to_le32(dk->number+1); |
8844e291 | 1203 | |
d2ca6449 | 1204 | sb->dev_number = __cpu_to_le32(dk->number); |
16715c01 | 1205 | sb->devflags = 0; /* don't copy another disks flags */ |
d2ca6449 NB |
1206 | sb->sb_csum = calc_sb_1_csum(sb); |
1207 | ||
111d01fc NB |
1208 | dip = (struct devinfo **)&st->info; |
1209 | while (*dip) | |
1210 | dip = &(*dip)->next; | |
503975b9 | 1211 | di = xmalloc(sizeof(struct devinfo)); |
111d01fc NB |
1212 | di->fd = fd; |
1213 | di->devname = devname; | |
1214 | di->disk = *dk; | |
72ca9bcf | 1215 | di->data_offset = data_offset; |
111d01fc NB |
1216 | di->next = NULL; |
1217 | *dip = di; | |
f20c3968 DW |
1218 | |
1219 | return 0; | |
82d9eba6 | 1220 | } |
0e600426 | 1221 | #endif |
82d9eba6 | 1222 | |
3da92f27 | 1223 | static void locate_bitmap1(struct supertype *st, int fd); |
14263cf1 | 1224 | |
3da92f27 | 1225 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 1226 | { |
3da92f27 | 1227 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 1228 | unsigned long long sb_offset; |
308340aa | 1229 | struct align_fd afd; |
82d9eba6 | 1230 | int sbsize; |
5dd497ee | 1231 | unsigned long long dsize; |
96395475 | 1232 | |
beae1dfe NB |
1233 | if (!get_dev_size(fd, NULL, &dsize)) |
1234 | return 1; | |
1235 | ||
1236 | dsize >>= 9; | |
96395475 | 1237 | |
5dd497ee | 1238 | if (dsize < 24) |
96395475 NB |
1239 | return 2; |
1240 | ||
308340aa JS |
1241 | init_afd(&afd, fd); |
1242 | ||
96395475 NB |
1243 | /* |
1244 | * Calculate the position of the superblock. | |
1245 | * It is always aligned to a 4K boundary and | |
1246 | * depending on minor_version, it can be: | |
1247 | * 0: At least 8K, but less than 12K, from end of device | |
1248 | * 1: At start of device | |
1249 | * 2: 4K from start of device. | |
1250 | */ | |
1251 | switch(st->minor_version) { | |
1252 | case 0: | |
5dd497ee | 1253 | sb_offset = dsize; |
96395475 NB |
1254 | sb_offset -= 8*2; |
1255 | sb_offset &= ~(4*2-1); | |
1256 | break; | |
1257 | case 1: | |
6fbba4c9 | 1258 | sb_offset = 0; |
96395475 NB |
1259 | break; |
1260 | case 2: | |
1261 | sb_offset = 4*2; | |
1262 | break; | |
1263 | default: | |
1264 | return -EINVAL; | |
1265 | } | |
1266 | ||
82d9eba6 | 1267 | |
34163fc7 | 1268 | |
6fbba4c9 NB |
1269 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
1270 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 | 1271 | ) { |
e7b84f9d | 1272 | pr_err("internal error - sb_offset is wrong\n"); |
96395475 NB |
1273 | abort(); |
1274 | } | |
82d9eba6 | 1275 | |
6fbba4c9 | 1276 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
1277 | return 3; |
1278 | ||
0a2f1894 | 1279 | sbsize = ROUND_UP(sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev), 512); |
82d9eba6 | 1280 | |
308340aa | 1281 | if (awrite(&afd, sb, sbsize) != sbsize) |
82d9eba6 NB |
1282 | return 4; |
1283 | ||
14263cf1 NB |
1284 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1285 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
911cead7 | 1286 | (((char*)sb)+MAX_SB_SIZE); |
14263cf1 | 1287 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
3da92f27 | 1288 | locate_bitmap1(st, fd); |
308340aa JS |
1289 | if (awrite(&afd, bm, sizeof(*bm)) != sizeof(*bm)) |
1290 | return 5; | |
14263cf1 NB |
1291 | } |
1292 | } | |
570c0542 | 1293 | fsync(fd); |
82d9eba6 NB |
1294 | return 0; |
1295 | } | |
1296 | ||
3da92f27 | 1297 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1298 | |
2fb749d1 NB |
1299 | static unsigned long choose_bm_space(unsigned long devsize) |
1300 | { | |
1301 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1302 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1303 | * NOTE: result must be multiple of 4K else bad things happen |
1304 | * on 4K-sector devices. | |
2fb749d1 | 1305 | */ |
69646c14 | 1306 | if (devsize < 64*2) return 0; |
2fb749d1 NB |
1307 | if (devsize - 64*2 >= 200*1024*1024*2) |
1308 | return 128*2; | |
1309 | if (devsize - 4*2 > 8*1024*1024*2) | |
1310 | return 64*2; | |
1311 | return 4*2; | |
1312 | } | |
1313 | ||
e8090005 N |
1314 | static void free_super1(struct supertype *st); |
1315 | ||
111d01fc NB |
1316 | #ifndef MDASSEMBLE |
1317 | static int write_init_super1(struct supertype *st) | |
82d9eba6 | 1318 | { |
3da92f27 | 1319 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1320 | struct supertype *refst; |
dfe47e00 | 1321 | int rfd; |
111d01fc | 1322 | int rv = 0; |
f21e18ca | 1323 | unsigned long long bm_space; |
a380e275 | 1324 | unsigned long long reserved; |
111d01fc | 1325 | struct devinfo *di; |
8fac0577 | 1326 | unsigned long long dsize, array_size; |
508a7f16 | 1327 | unsigned long long sb_offset, headroom; |
83cd1e97 | 1328 | unsigned long long data_offset; |
82d9eba6 | 1329 | |
4687f160 | 1330 | for (di = st->info; di; di = di->next) { |
111d01fc NB |
1331 | if (di->disk.state == 1) |
1332 | continue; | |
a0c8a17f NB |
1333 | if (di->fd < 0) |
1334 | continue; | |
82d9eba6 | 1335 | |
ba728be7 | 1336 | while (Kill(di->devname, NULL, 0, -1, 1) == 0) |
9277cc77 | 1337 | ; |
82d9eba6 | 1338 | |
111d01fc NB |
1339 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1340 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
adbb382b | 1341 | sb->devflags |= WriteMostly1; |
9a88e7b6 | 1342 | else |
adbb382b | 1343 | sb->devflags &= ~WriteMostly1; |
892debc8 | 1344 | |
111d01fc NB |
1345 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
1346 | read(rfd, sb->device_uuid, 16) != 16) { | |
83208785 N |
1347 | __u32 r[4] = {random(), random(), random(), random()}; |
1348 | memcpy(sb->device_uuid, r, 16); | |
111d01fc | 1349 | } |
83208785 N |
1350 | if (rfd >= 0) |
1351 | close(rfd); | |
1352 | ||
111d01fc NB |
1353 | sb->events = 0; |
1354 | ||
e8090005 N |
1355 | refst = dup_super(st); |
1356 | if (load_super1(refst, di->fd, NULL)==0) { | |
1357 | struct mdp_superblock_1 *refsb = refst->sb; | |
111d01fc NB |
1358 | |
1359 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1360 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1361 | /* same array, so preserve events and | |
1362 | * dev_number */ | |
1363 | sb->events = refsb->events; | |
1364 | /* bugs in 2.6.17 and earlier mean the | |
1365 | * dev_number chosen in Manage must be preserved | |
1366 | */ | |
1367 | if (get_linux_version() >= 2006018) | |
1368 | sb->dev_number = refsb->dev_number; | |
1369 | } | |
e8090005 | 1370 | free_super1(refst); |
892debc8 | 1371 | } |
e8090005 | 1372 | free(refst); |
34163fc7 | 1373 | |
40114213 JS |
1374 | if (!get_dev_size(di->fd, NULL, &dsize)) { |
1375 | rv = 1; | |
1376 | goto error_out; | |
1377 | } | |
111d01fc | 1378 | dsize >>= 9; |
82d9eba6 | 1379 | |
111d01fc NB |
1380 | if (dsize < 24) { |
1381 | close(di->fd); | |
40114213 JS |
1382 | rv = 2; |
1383 | goto error_out; | |
111d01fc | 1384 | } |
82d9eba6 NB |
1385 | |
1386 | ||
111d01fc NB |
1387 | /* |
1388 | * Calculate the position of the superblock. | |
1389 | * It is always aligned to a 4K boundary and | |
1390 | * depending on minor_version, it can be: | |
1391 | * 0: At least 8K, but less than 12K, from end of device | |
1392 | * 1: At start of device | |
1393 | * 2: 4K from start of device. | |
1394 | * Depending on the array size, we might leave extra space | |
1395 | * for a bitmap. | |
bf95d0f3 | 1396 | * Also leave 4K for bad-block log. |
111d01fc NB |
1397 | */ |
1398 | array_size = __le64_to_cpu(sb->size); | |
bf95d0f3 N |
1399 | /* work out how much space we left for a bitmap, |
1400 | * Add 8 sectors for bad block log */ | |
1401 | bm_space = choose_bm_space(array_size) + 8; | |
111d01fc | 1402 | |
508a7f16 N |
1403 | /* We try to leave 0.1% at the start for reshape |
1404 | * operations, but limit this to 128Meg (0.1% of 10Gig) | |
1405 | * which is plenty for efficient reshapes | |
cb19a251 N |
1406 | * However we make it at least 2 chunks as one chunk |
1407 | * is minimum needed for reshape. | |
508a7f16 N |
1408 | */ |
1409 | headroom = 128 * 1024 * 2; | |
cb19a251 N |
1410 | while (headroom << 10 > array_size && |
1411 | headroom/2 >= __le32_to_cpu(sb->chunksize) * 2) | |
508a7f16 N |
1412 | headroom >>= 1; |
1413 | ||
72ca9bcf | 1414 | data_offset = di->data_offset; |
111d01fc NB |
1415 | switch(st->minor_version) { |
1416 | case 0: | |
1417 | sb_offset = dsize; | |
1418 | sb_offset -= 8*2; | |
1419 | sb_offset &= ~(4*2-1); | |
1420 | sb->super_offset = __cpu_to_le64(sb_offset); | |
83cd1e97 N |
1421 | if (data_offset == INVALID_SECTORS) |
1422 | sb->data_offset = 0; | |
f21e18ca | 1423 | if (sb_offset < array_size + bm_space) |
a380e275 | 1424 | bm_space = sb_offset - array_size; |
111d01fc | 1425 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
bf95d0f3 N |
1426 | if (bm_space >= 8) { |
1427 | sb->bblog_size = __cpu_to_le16(8); | |
1428 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1429 | } | |
111d01fc NB |
1430 | break; |
1431 | case 1: | |
1432 | sb->super_offset = __cpu_to_le64(0); | |
83cd1e97 N |
1433 | if (data_offset == INVALID_SECTORS) { |
1434 | reserved = bm_space + 4*2; | |
1435 | if (reserved < headroom) | |
1436 | reserved = headroom; | |
1437 | if (reserved + array_size > dsize) | |
1438 | reserved = dsize - array_size; | |
1439 | /* Try for multiple of 1Meg so it is nicely aligned */ | |
1440 | #define ONE_MEG (2*1024) | |
1441 | if (reserved > ONE_MEG) | |
1442 | reserved = (reserved/ONE_MEG) * ONE_MEG; | |
1443 | ||
1444 | /* force 4K alignment */ | |
1445 | reserved &= ~7ULL; | |
1446 | ||
1447 | } else | |
1448 | reserved = data_offset; | |
a380e275 N |
1449 | |
1450 | sb->data_offset = __cpu_to_le64(reserved); | |
1451 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
bf95d0f3 N |
1452 | if (reserved >= 16) { |
1453 | sb->bblog_size = __cpu_to_le16(8); | |
1454 | sb->bblog_offset = __cpu_to_le32(reserved-8); | |
1455 | } | |
111d01fc NB |
1456 | break; |
1457 | case 2: | |
1458 | sb_offset = 4*2; | |
1459 | sb->super_offset = __cpu_to_le64(4*2); | |
83cd1e97 N |
1460 | if (data_offset == INVALID_SECTORS) { |
1461 | if (4*2 + 4*2 + bm_space + array_size | |
1462 | > dsize) | |
1463 | bm_space = dsize - array_size | |
1464 | - 4*2 - 4*2; | |
1465 | ||
1466 | reserved = bm_space + 4*2 + 4*2; | |
1467 | if (reserved < headroom) | |
1468 | reserved = headroom; | |
1469 | if (reserved + array_size > dsize) | |
1470 | reserved = dsize - array_size; | |
1471 | /* Try for multiple of 1Meg so it is nicely aligned */ | |
1472 | #define ONE_MEG (2*1024) | |
1473 | if (reserved > ONE_MEG) | |
1474 | reserved = (reserved/ONE_MEG) * ONE_MEG; | |
1475 | ||
1476 | /* force 4K alignment */ | |
1477 | reserved &= ~7ULL; | |
1478 | ||
1479 | } else | |
1480 | reserved = data_offset; | |
a380e275 N |
1481 | |
1482 | sb->data_offset = __cpu_to_le64(reserved); | |
1483 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
bf95d0f3 N |
1484 | if (reserved >= 16+16) { |
1485 | sb->bblog_size = __cpu_to_le16(8); | |
1486 | /* '8' sectors for the bblog, and another '8' | |
1487 | * because we want offset from superblock, not | |
1488 | * start of device. | |
1489 | */ | |
1490 | sb->bblog_offset = __cpu_to_le32(reserved-8-8); | |
1491 | } | |
111d01fc NB |
1492 | break; |
1493 | default: | |
e7b84f9d N |
1494 | pr_err("Failed to write invalid " |
1495 | "metadata format 1.%i to %s\n", | |
1496 | st->minor_version, di->devname); | |
40114213 JS |
1497 | rv = -EINVAL; |
1498 | goto out; | |
111d01fc | 1499 | } |
82d9eba6 | 1500 | |
111d01fc NB |
1501 | sb->sb_csum = calc_sb_1_csum(sb); |
1502 | rv = store_super1(st, di->fd); | |
111d01fc NB |
1503 | if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1)) |
1504 | rv = st->ss->write_bitmap(st, di->fd); | |
1505 | close(di->fd); | |
1506 | di->fd = -1; | |
4687f160 | 1507 | if (rv) |
1508 | goto error_out; | |
111d01fc | 1509 | } |
40114213 JS |
1510 | error_out: |
1511 | if (rv) | |
e7b84f9d N |
1512 | pr_err("Failed to write metadata to %s\n", |
1513 | di->devname); | |
40114213 | 1514 | out: |
82d9eba6 NB |
1515 | return rv; |
1516 | } | |
111d01fc | 1517 | #endif |
82d9eba6 | 1518 | |
64557c33 | 1519 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
1520 | { |
1521 | /* | |
1522 | * return: | |
1523 | * 0 same, or first was empty, and second was copied | |
1524 | * 1 second had wrong number | |
1525 | * 2 wrong uuid | |
1526 | * 3 wrong other info | |
1527 | */ | |
64557c33 NB |
1528 | struct mdp_superblock_1 *first = st->sb; |
1529 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
1530 | |
1531 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
1532 | return 1; | |
1533 | if (second->major_version != __cpu_to_le32(1)) | |
1534 | return 1; | |
1535 | ||
1536 | if (!first) { | |
3c0bcd46 | 1537 | if (posix_memalign((void**)&first, 4096, SUPER1_SIZE) != 0) { |
e7b84f9d | 1538 | pr_err("%s could not allocate superblock\n", __func__); |
3d2c4fc7 DW |
1539 | return 1; |
1540 | } | |
41226756 | 1541 | memcpy(first, second, SUPER1_SIZE); |
64557c33 | 1542 | st->sb = first; |
82d9eba6 NB |
1543 | return 0; |
1544 | } | |
1545 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
1546 | return 2; | |
1547 | ||
1548 | if (first->ctime != second->ctime || | |
1549 | first->level != second->level || | |
1550 | first->layout != second->layout || | |
1551 | first->size != second->size || | |
1552 | first->chunksize != second->chunksize || | |
1553 | first->raid_disks != second->raid_disks) | |
1554 | return 3; | |
1555 | return 0; | |
1556 | } | |
1557 | ||
3da92f27 | 1558 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 1559 | { |
5dd497ee | 1560 | unsigned long long dsize; |
82d9eba6 NB |
1561 | unsigned long long sb_offset; |
1562 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
1563 | int uuid[4]; |
1564 | struct bitmap_super_s *bsb; | |
bee8ec56 | 1565 | struct misc_dev_info *misc; |
308340aa | 1566 | struct align_fd afd; |
82d9eba6 | 1567 | |
3da92f27 | 1568 | free_super1(st); |
82d9eba6 | 1569 | |
308340aa JS |
1570 | init_afd(&afd, fd); |
1571 | ||
a17a3de3 | 1572 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 1573 | int bestvers = -1; |
23dc1ae8 | 1574 | struct supertype tst; |
570c0542 NB |
1575 | __u64 bestctime = 0; |
1576 | /* guess... choose latest ctime */ | |
ef609477 | 1577 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
1578 | tst.ss = &super1; |
1579 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
1580 | switch(load_super1(&tst, fd, devname)) { |
1581 | case 0: super = tst.sb; | |
570c0542 NB |
1582 | if (bestvers == -1 || |
1583 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 1584 | bestvers = tst.minor_version; |
570c0542 NB |
1585 | bestctime = __le64_to_cpu(super->ctime); |
1586 | } | |
1587 | free(super); | |
3da92f27 | 1588 | tst.sb = NULL; |
570c0542 | 1589 | break; |
23dc1ae8 | 1590 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
1591 | case 2: break; /* bad, try next */ |
1592 | } | |
1593 | } | |
570c0542 NB |
1594 | if (bestvers != -1) { |
1595 | int rv; | |
23dc1ae8 NB |
1596 | tst.minor_version = bestvers; |
1597 | tst.ss = &super1; | |
911cead7 | 1598 | tst.max_devs = MAX_DEVS; |
3da92f27 | 1599 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
1600 | if (rv == 0) |
1601 | *st = tst; | |
570c0542 NB |
1602 | return rv; |
1603 | } | |
82d9eba6 NB |
1604 | return 2; |
1605 | } | |
beae1dfe NB |
1606 | if (!get_dev_size(fd, devname, &dsize)) |
1607 | return 1; | |
1608 | dsize >>= 9; | |
82d9eba6 | 1609 | |
5dd497ee | 1610 | if (dsize < 24) { |
82d9eba6 | 1611 | if (devname) |
e7b84f9d | 1612 | pr_err("%s is too small for md: size is %llu sectors.\n", |
5dd497ee | 1613 | devname, dsize); |
82d9eba6 NB |
1614 | return 1; |
1615 | } | |
1616 | ||
1617 | /* | |
1618 | * Calculate the position of the superblock. | |
1619 | * It is always aligned to a 4K boundary and | |
14263cf1 | 1620 | * depending on minor_version, it can be: |
82d9eba6 NB |
1621 | * 0: At least 8K, but less than 12K, from end of device |
1622 | * 1: At start of device | |
1623 | * 2: 4K from start of device. | |
1624 | */ | |
1625 | switch(st->minor_version) { | |
1626 | case 0: | |
5dd497ee | 1627 | sb_offset = dsize; |
82d9eba6 NB |
1628 | sb_offset -= 8*2; |
1629 | sb_offset &= ~(4*2-1); | |
1630 | break; | |
1631 | case 1: | |
1632 | sb_offset = 0; | |
1633 | break; | |
1634 | case 2: | |
1635 | sb_offset = 4*2; | |
1636 | break; | |
1637 | default: | |
1638 | return -EINVAL; | |
1639 | } | |
1640 | ||
82d9eba6 NB |
1641 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { |
1642 | if (devname) | |
e7b84f9d | 1643 | pr_err("Cannot seek to superblock on %s: %s\n", |
82d9eba6 NB |
1644 | devname, strerror(errno)); |
1645 | return 1; | |
1646 | } | |
1647 | ||
3c0bcd46 | 1648 | if (posix_memalign((void**)&super, 4096, SUPER1_SIZE) != 0) { |
e7b84f9d | 1649 | pr_err("%s could not allocate superblock\n", |
3d2c4fc7 DW |
1650 | __func__); |
1651 | return 1; | |
1652 | } | |
82d9eba6 | 1653 | |
308340aa | 1654 | if (aread(&afd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { |
82d9eba6 | 1655 | if (devname) |
e7b84f9d | 1656 | pr_err("Cannot read superblock on %s\n", |
82d9eba6 NB |
1657 | devname); |
1658 | free(super); | |
1659 | return 1; | |
1660 | } | |
1661 | ||
1662 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
1663 | if (devname) | |
e7b84f9d | 1664 | pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", |
82d9eba6 NB |
1665 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); |
1666 | free(super); | |
1667 | return 2; | |
1668 | } | |
1669 | ||
1670 | if (__le32_to_cpu(super->major_version) != 1) { | |
1671 | if (devname) | |
e7b84f9d | 1672 | pr_err("Cannot interpret superblock on %s - version is %d\n", |
82d9eba6 NB |
1673 | devname, __le32_to_cpu(super->major_version)); |
1674 | free(super); | |
1675 | return 2; | |
1676 | } | |
1677 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
1678 | if (devname) | |
e7b84f9d | 1679 | pr_err("No superblock found on %s (super_offset is wrong)\n", |
82d9eba6 NB |
1680 | devname); |
1681 | free(super); | |
1682 | return 2; | |
1683 | } | |
64557c33 | 1684 | st->sb = super; |
14263cf1 | 1685 | |
911cead7 | 1686 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
bee8ec56 | 1687 | |
911cead7 | 1688 | misc = (struct misc_dev_info*) (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE); |
bee8ec56 NB |
1689 | misc->device_size = dsize; |
1690 | ||
14263cf1 NB |
1691 | /* Now check on the bitmap superblock */ |
1692 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
1693 | return 0; | |
1694 | /* Read the bitmap superblock and make sure it looks | |
1695 | * valid. If it doesn't clear the bit. An --assemble --force | |
1696 | * should get that written out. | |
1697 | */ | |
3da92f27 | 1698 | locate_bitmap1(st, fd); |
308340aa | 1699 | if (aread(&afd, bsb, 512) != 512) |
14263cf1 NB |
1700 | goto no_bitmap; |
1701 | ||
3da92f27 | 1702 | uuid_from_super1(st, uuid); |
14263cf1 NB |
1703 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
1704 | memcmp(bsb->uuid, uuid, 16) != 0) | |
1705 | goto no_bitmap; | |
1706 | return 0; | |
1707 | ||
1708 | no_bitmap: | |
c0c1acd6 N |
1709 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) |
1710 | & ~MD_FEATURE_BITMAP_OFFSET); | |
82d9eba6 NB |
1711 | return 0; |
1712 | } | |
1713 | ||
1714 | ||
1715 | static struct supertype *match_metadata_desc1(char *arg) | |
1716 | { | |
503975b9 | 1717 | struct supertype *st = xcalloc(1, sizeof(*st)); |
82d9eba6 | 1718 | |
4dd2df09 | 1719 | st->container_devnm[0] = 0; |
82d9eba6 | 1720 | st->ss = &super1; |
911cead7 | 1721 | st->max_devs = MAX_DEVS; |
64557c33 | 1722 | st->sb = NULL; |
9b2a22d3 N |
1723 | /* leading zeros can be safely ignored. --detail generates them. */ |
1724 | while (*arg == '0') | |
1725 | arg++; | |
1726 | if (strcmp(arg, "1.0") == 0 || | |
1727 | strcmp(arg, "1.00") == 0) { | |
82d9eba6 NB |
1728 | st->minor_version = 0; |
1729 | return st; | |
1730 | } | |
9b2a22d3 | 1731 | if (strcmp(arg, "1.1") == 0 || |
50827504 | 1732 | strcmp(arg, "1.01") == 0 |
7d5c3964 | 1733 | ) { |
82d9eba6 NB |
1734 | st->minor_version = 1; |
1735 | return st; | |
1736 | } | |
9b2a22d3 | 1737 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 1738 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 1739 | strcmp(arg, "default") == 0 || |
26f467a9 | 1740 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 1741 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
1742 | st->minor_version = 2; |
1743 | return st; | |
1744 | } | |
a17a3de3 | 1745 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 1746 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
1747 | st->minor_version = -1; |
1748 | return st; | |
1749 | } | |
82d9eba6 NB |
1750 | |
1751 | free(st); | |
1752 | return NULL; | |
1753 | } | |
1754 | ||
34163fc7 NB |
1755 | /* find available size on device with this devsize, using |
1756 | * superblock type st, and reserving 'reserve' sectors for | |
1757 | * a possible bitmap | |
1758 | */ | |
cb19a251 N |
1759 | static __u64 _avail_size1(struct supertype *st, __u64 devsize, |
1760 | unsigned long long data_offset, int chunksize) | |
82d9eba6 | 1761 | { |
2a528478 | 1762 | struct mdp_superblock_1 *super = st->sb; |
387fcd59 | 1763 | int bmspace = 0; |
82d9eba6 NB |
1764 | if (devsize < 24) |
1765 | return 0; | |
1766 | ||
2a528478 N |
1767 | if (super == NULL) |
1768 | /* creating: allow suitable space for bitmap */ | |
387fcd59 | 1769 | bmspace = choose_bm_space(devsize); |
2a528478 N |
1770 | #ifndef MDASSEMBLE |
1771 | else if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) { | |
1772 | /* hot-add. allow for actual size of bitmap */ | |
1773 | struct bitmap_super_s *bsb; | |
911cead7 | 1774 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
387fcd59 | 1775 | bmspace = bitmap_sectors(bsb); |
2a528478 N |
1776 | } |
1777 | #endif | |
88af981f N |
1778 | /* Allow space for bad block log */ |
1779 | if (super && super->bblog_size) | |
1780 | devsize -= __le16_to_cpu(super->bblog_size); | |
1781 | else | |
1782 | devsize -= 8; | |
21e92547 | 1783 | |
387fcd59 | 1784 | |
a380e275 N |
1785 | if (st->minor_version < 0) |
1786 | /* not specified, so time to set default */ | |
1787 | st->minor_version = 2; | |
387fcd59 N |
1788 | |
1789 | if (data_offset != INVALID_SECTORS) | |
1790 | switch(st->minor_version) { | |
1791 | case 0: | |
1792 | return devsize - data_offset - 8*2; | |
1793 | case 1: | |
1794 | case 2: | |
1795 | return devsize - data_offset; | |
1796 | default: | |
1797 | return 0; | |
1798 | } | |
1799 | ||
1800 | devsize -= bmspace; | |
1801 | ||
a380e275 N |
1802 | if (super == NULL && st->minor_version > 0) { |
1803 | /* haven't committed to a size yet, so allow some | |
508a7f16 N |
1804 | * slack for space for reshape. |
1805 | * Limit slack to 128M, but aim for about 0.1% | |
a380e275 | 1806 | */ |
508a7f16 | 1807 | unsigned long long headroom = 128*1024*2; |
cb19a251 N |
1808 | while ((headroom << 10) > devsize && |
1809 | (chunksize == 0 || | |
1810 | headroom / 2 >= ((unsigned)chunksize*2)*2)) | |
508a7f16 N |
1811 | headroom >>= 1; |
1812 | devsize -= headroom; | |
a380e275 | 1813 | } |
34163fc7 NB |
1814 | switch(st->minor_version) { |
1815 | case 0: | |
1bf4e2d9 NB |
1816 | /* at end */ |
1817 | return ((devsize - 8*2 ) & ~(4*2-1)); | |
34163fc7 | 1818 | case 1: |
1bf4e2d9 NB |
1819 | /* at start, 4K for superblock and possible bitmap */ |
1820 | return devsize - 4*2; | |
34163fc7 | 1821 | case 2: |
1bf4e2d9 NB |
1822 | /* 4k from start, 4K for superblock and possible bitmap */ |
1823 | return devsize - (4+4)*2; | |
34163fc7 NB |
1824 | } |
1825 | return 0; | |
1826 | } | |
cb19a251 N |
1827 | static __u64 avail_size1(struct supertype *st, __u64 devsize, |
1828 | unsigned long long data_offset) | |
1829 | { | |
1830 | return _avail_size1(st, devsize, data_offset, 0); | |
1831 | } | |
34163fc7 | 1832 | |
1bf4e2d9 | 1833 | static int |
3da92f27 | 1834 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
1835 | int *chunkp, int delay, int write_behind, |
1836 | unsigned long long size, | |
21e92547 | 1837 | int may_change, int major) |
34163fc7 NB |
1838 | { |
1839 | /* | |
c0c1acd6 N |
1840 | * If not may_change, then this is a 'Grow' without sysfs support for |
1841 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
1842 | * If may_change, then this is create or a Grow with sysfs syupport, | |
1843 | * and we can put the bitmap wherever we like. | |
34163fc7 | 1844 | * |
f9c25f1d | 1845 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
1846 | */ |
1847 | ||
1bf4e2d9 | 1848 | unsigned long long bits; |
199171a2 | 1849 | unsigned long long max_bits; |
34163fc7 | 1850 | unsigned long long min_chunk; |
199171a2 | 1851 | long offset; |
88af981f | 1852 | long bbl_offset, bbl_size; |
f21e18ca | 1853 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 1854 | int room = 0; |
c0c1acd6 | 1855 | int creating = 0; |
3da92f27 | 1856 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 1857 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
3b7e9d0c | 1858 | int uuid[4]; |
34163fc7 | 1859 | |
88af981f | 1860 | |
c0c1acd6 N |
1861 | if (__le64_to_cpu(sb->data_size) == 0) |
1862 | /* Must be creating the array, else data_size would be non-zero */ | |
1863 | creating = 1; | |
199171a2 NB |
1864 | switch(st->minor_version) { |
1865 | case 0: | |
a31128d2 N |
1866 | /* either 3K after the superblock (when hot-add), |
1867 | * or some amount of space before. | |
199171a2 | 1868 | */ |
c0c1acd6 | 1869 | if (creating) { |
199171a2 NB |
1870 | /* We are creating array, so we *know* how much room has |
1871 | * been left. | |
1872 | */ | |
1873 | offset = 0; | |
2fb749d1 | 1874 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
88af981f | 1875 | bbl_size = 8; |
199171a2 NB |
1876 | } else { |
1877 | room = __le64_to_cpu(sb->super_offset) | |
1878 | - __le64_to_cpu(sb->data_offset) | |
1879 | - __le64_to_cpu(sb->data_size); | |
88af981f N |
1880 | bbl_size = __le16_to_cpu(sb->bblog_size); |
1881 | if (bbl_size < 8) | |
1882 | bbl_size = 8; | |
1883 | bbl_offset = (__s32)__le32_to_cpu(sb->bblog_offset); | |
1884 | if (bbl_size < -bbl_offset) | |
1885 | bbl_size = -bbl_offset; | |
c0c1acd6 N |
1886 | |
1887 | if (!may_change || (room < 3*2 && | |
199171a2 NB |
1888 | __le32_to_cpu(sb->max_dev) <= 384)) { |
1889 | room = 3*2; | |
1890 | offset = 1*2; | |
88af981f | 1891 | bbl_size = 0; |
199171a2 NB |
1892 | } else { |
1893 | offset = 0; /* means movable offset */ | |
1894 | } | |
1895 | } | |
1896 | break; | |
1897 | case 1: | |
1898 | case 2: /* between superblock and data */ | |
c0c1acd6 | 1899 | if (creating) { |
199171a2 | 1900 | offset = 4*2; |
2fb749d1 | 1901 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
88af981f | 1902 | bbl_size = 8; |
199171a2 NB |
1903 | } else { |
1904 | room = __le64_to_cpu(sb->data_offset) | |
1905 | - __le64_to_cpu(sb->super_offset); | |
88af981f N |
1906 | bbl_size = __le16_to_cpu(sb->bblog_size); |
1907 | if (bbl_size) | |
1908 | room = __le32_to_cpu(sb->bblog_offset) + bbl_size; | |
1909 | else | |
1910 | bbl_size = 8; | |
1911 | ||
c0c1acd6 N |
1912 | if (!may_change) { |
1913 | room -= 2; /* Leave 1K for superblock */ | |
199171a2 | 1914 | offset = 2; |
88af981f | 1915 | bbl_size = 0; |
199171a2 | 1916 | } else { |
c0c1acd6 | 1917 | room -= 4*2; /* leave 4K for superblock */ |
199171a2 NB |
1918 | offset = 4*2; |
1919 | } | |
1920 | } | |
1921 | break; | |
ae491d1e NB |
1922 | default: |
1923 | return 0; | |
199171a2 | 1924 | } |
1bf4e2d9 | 1925 | |
88af981f | 1926 | room -= bbl_size; |
199171a2 NB |
1927 | if (chunk == UnSet && room > 128*2) |
1928 | /* Limit to 128K of bitmap when chunk size not requested */ | |
1929 | room = 128*2; | |
1bf4e2d9 | 1930 | |
199171a2 | 1931 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
1932 | |
1933 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 1934 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
1935 | while (bits > max_bits) { |
1936 | min_chunk *= 2; | |
1937 | bits = (bits+1)/2; | |
1938 | } | |
b8ab2a50 N |
1939 | if (chunk == UnSet) { |
1940 | /* For practical purpose, 64Meg is a good | |
1941 | * default chunk size for internal bitmaps. | |
1942 | */ | |
34163fc7 | 1943 | chunk = min_chunk; |
b8ab2a50 N |
1944 | if (chunk < 64*1024*1024) |
1945 | chunk = 64*1024*1024; | |
1946 | } else if (chunk < min_chunk) | |
34163fc7 | 1947 | return 0; /* chunk size too small */ |
21e92547 NB |
1948 | if (chunk == 0) /* rounding problem */ |
1949 | return 0; | |
34163fc7 | 1950 | |
199171a2 | 1951 | if (offset == 0) { |
a31128d2 N |
1952 | /* start bitmap on a 4K boundary with enough space for |
1953 | * the bitmap | |
1954 | */ | |
199171a2 | 1955 | bits = (size*512) / chunk + 1; |
a31128d2 N |
1956 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
1957 | room *= 8; /* convert 4K blocks to sectors */ | |
88af981f | 1958 | offset = -room - bbl_size; |
199171a2 NB |
1959 | } |
1960 | ||
34a13953 | 1961 | sb->bitmap_offset = (int32_t)__cpu_to_le32(offset); |
34163fc7 | 1962 | |
c0c1acd6 N |
1963 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) |
1964 | | MD_FEATURE_BITMAP_OFFSET); | |
29e766a5 | 1965 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 1966 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 1967 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
1968 | uuid_from_super1(st, uuid); |
1969 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
1970 | bms->chunksize = __cpu_to_le32(chunk); |
1971 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 1972 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 NB |
1973 | bms->write_behind = __cpu_to_le32(write_behind); |
1974 | ||
199171a2 | 1975 | *chunkp = chunk; |
34163fc7 NB |
1976 | return 1; |
1977 | } | |
1978 | ||
3da92f27 | 1979 | static void locate_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1980 | { |
34163fc7 | 1981 | unsigned long long offset; |
1e0d770c NB |
1982 | struct mdp_superblock_1 *sb; |
1983 | int mustfree = 0; | |
34163fc7 | 1984 | |
3da92f27 NB |
1985 | if (!st->sb) { |
1986 | if (st->ss->load_super(st, fd, NULL)) | |
f6d75de8 | 1987 | return; /* no error I hope... */ |
1e0d770c NB |
1988 | mustfree = 1; |
1989 | } | |
3da92f27 | 1990 | sb = st->sb; |
e478dc86 | 1991 | |
1bf4e2d9 | 1992 | offset = __le64_to_cpu(sb->super_offset); |
68754bd1 | 1993 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset); |
1e0d770c | 1994 | if (mustfree) |
f6d75de8 | 1995 | free(sb); |
1bf4e2d9 | 1996 | lseek64(fd, offset<<9, 0); |
34163fc7 NB |
1997 | } |
1998 | ||
3da92f27 | 1999 | static int write_bitmap1(struct supertype *st, int fd) |
34163fc7 | 2000 | { |
3da92f27 | 2001 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2002 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
34163fc7 | 2003 | int rv = 0; |
d669228f | 2004 | void *buf; |
34163fc7 | 2005 | int towrite, n; |
308340aa JS |
2006 | struct align_fd afd; |
2007 | ||
2008 | init_afd(&afd, fd); | |
34163fc7 | 2009 | |
3da92f27 | 2010 | locate_bitmap1(st, fd); |
34163fc7 | 2011 | |
d669228f JS |
2012 | if (posix_memalign(&buf, 4096, 4096)) |
2013 | return -ENOMEM; | |
2014 | ||
6416d527 | 2015 | memset(buf, 0xff, 4096); |
b2bfdfa0 | 2016 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); |
6416d527 | 2017 | |
1bf4e2d9 NB |
2018 | towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9); |
2019 | towrite = (towrite+7) >> 3; /* bits to bytes */ | |
6416d527 NB |
2020 | towrite += sizeof(bitmap_super_t); |
2021 | towrite = ROUND_UP(towrite, 512); | |
34163fc7 NB |
2022 | while (towrite > 0) { |
2023 | n = towrite; | |
6416d527 NB |
2024 | if (n > 4096) |
2025 | n = 4096; | |
308340aa | 2026 | n = awrite(&afd, buf, n); |
34163fc7 NB |
2027 | if (n > 0) |
2028 | towrite -= n; | |
2029 | else | |
2030 | break; | |
6416d527 | 2031 | memset(buf, 0xff, 4096); |
34163fc7 NB |
2032 | } |
2033 | fsync(fd); | |
2034 | if (towrite) | |
2035 | rv = -2; | |
2036 | ||
d669228f | 2037 | free(buf); |
34163fc7 | 2038 | return rv; |
82d9eba6 NB |
2039 | } |
2040 | ||
3da92f27 | 2041 | static void free_super1(struct supertype *st) |
df37ffc0 | 2042 | { |
3da92f27 NB |
2043 | if (st->sb) |
2044 | free(st->sb); | |
1cc7f4fe N |
2045 | while (st->info) { |
2046 | struct devinfo *di = st->info; | |
2047 | st->info = di->next; | |
2048 | if (di->fd >= 0) | |
2049 | close(di->fd); | |
2050 | free(di); | |
2051 | } | |
3da92f27 | 2052 | st->sb = NULL; |
df37ffc0 NB |
2053 | } |
2054 | ||
0e600426 | 2055 | #ifndef MDASSEMBLE |
17f25ca6 NB |
2056 | static int validate_geometry1(struct supertype *st, int level, |
2057 | int layout, int raiddisks, | |
c21e737b | 2058 | int *chunk, unsigned long long size, |
af4348dd | 2059 | unsigned long long data_offset, |
2c514b71 NB |
2060 | char *subdev, unsigned long long *freesize, |
2061 | int verbose) | |
17f25ca6 NB |
2062 | { |
2063 | unsigned long long ldsize; | |
2064 | int fd; | |
2065 | ||
b42f577a N |
2066 | if (level == LEVEL_CONTAINER) { |
2067 | if (verbose) | |
e7b84f9d | 2068 | pr_err("1.x metadata does not support containers\n"); |
17f25ca6 | 2069 | return 0; |
b42f577a | 2070 | } |
bb7295f1 N |
2071 | if (chunk && *chunk == UnSet) |
2072 | *chunk = DEFAULT_CHUNK; | |
2073 | ||
17f25ca6 NB |
2074 | if (!subdev) |
2075 | return 1; | |
2076 | ||
2077 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
2078 | if (fd < 0) { | |
2c514b71 | 2079 | if (verbose) |
e7b84f9d | 2080 | pr_err("super1.x cannot open %s: %s\n", |
2c514b71 | 2081 | subdev, strerror(errno)); |
17f25ca6 NB |
2082 | return 0; |
2083 | } | |
2c514b71 | 2084 | |
17f25ca6 NB |
2085 | if (!get_dev_size(fd, subdev, &ldsize)) { |
2086 | close(fd); | |
2087 | return 0; | |
2088 | } | |
2089 | close(fd); | |
2090 | ||
cb19a251 | 2091 | *freesize = _avail_size1(st, ldsize >> 9, data_offset, *chunk); |
17f25ca6 NB |
2092 | return 1; |
2093 | } | |
0e600426 | 2094 | #endif /* MDASSEMBLE */ |
17f25ca6 | 2095 | |
82d9eba6 | 2096 | struct superswitch super1 = { |
c7654afc | 2097 | #ifndef MDASSEMBLE |
82d9eba6 NB |
2098 | .examine_super = examine_super1, |
2099 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 2100 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
2101 | .detail_super = detail_super1, |
2102 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 2103 | .export_detail_super = export_detail_super1, |
111d01fc | 2104 | .write_init_super = write_init_super1, |
0e600426 N |
2105 | .validate_geometry = validate_geometry1, |
2106 | .add_to_super = add_to_super1, | |
6d388a88 | 2107 | .examine_badblocks = examine_badblocks_super1, |
c7654afc | 2108 | #endif |
83b6208e | 2109 | .match_home = match_home1, |
82d9eba6 NB |
2110 | .uuid_from_super = uuid_from_super1, |
2111 | .getinfo_super = getinfo_super1, | |
00bbdbda | 2112 | .container_content = container_content1, |
82d9eba6 | 2113 | .update_super = update_super1, |
82d9eba6 | 2114 | .init_super = init_super1, |
82d9eba6 | 2115 | .store_super = store_super1, |
82d9eba6 NB |
2116 | .compare_super = compare_super1, |
2117 | .load_super = load_super1, | |
2118 | .match_metadata_desc = match_metadata_desc1, | |
2119 | .avail_size = avail_size1, | |
34163fc7 NB |
2120 | .add_internal_bitmap = add_internal_bitmap1, |
2121 | .locate_bitmap = locate_bitmap1, | |
2122 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 2123 | .free_super = free_super1, |
f277ce36 NB |
2124 | #if __BYTE_ORDER == BIG_ENDIAN |
2125 | .swapuuid = 0, | |
2126 | #else | |
2127 | .swapuuid = 1, | |
2128 | #endif | |
31015d57 | 2129 | .name = "1.x", |
82d9eba6 | 2130 | }; |