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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 */ | |
bf95d0f3 N |
73 | /* bad block log. If there are any bad blocks the feature flag is set. |
74 | * if offset and size are non-zero, that space is reserved and available. | |
75 | */ | |
76 | __u8 bblog_shift; /* shift from sectors to block size for badblocklist */ | |
77 | __u16 bblog_size; /* number of sectors reserved for badblocklist */ | |
78 | __u32 bblog_offset; /* sector offset from superblock to bblog, signed */ | |
82d9eba6 NB |
79 | |
80 | /* array state information - 64 bytes */ | |
81 | __u64 utime; /* 40 bits second, 24 btes microseconds */ | |
82 | __u64 events; /* incremented when superblock updated */ | |
83 | __u64 resync_offset; /* data before this offset (from data_offset) known to be in sync */ | |
4180aa4d N |
84 | __u32 sb_csum; /* checksum upto dev_roles[max_dev] */ |
85 | __u32 max_dev; /* size of dev_roles[] array to consider */ | |
82d9eba6 NB |
86 | __u8 pad3[64-32]; /* set to 0 when writing */ |
87 | ||
88 | /* device state information. Indexed by dev_number. | |
89 | * 2 bytes per device | |
90 | * Note there are no per-device state flags. State information is rolled | |
91 | * into the 'roles' value. If a device is spare or faulty, then it doesn't | |
92 | * have a meaningful role. | |
93 | */ | |
94 | __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ | |
95 | }; | |
96 | ||
911cead7 N |
97 | #define MAX_SB_SIZE 4096 |
98 | /* bitmap super size is 256, but we round up to a sector for alignment */ | |
99 | #define BM_SUPER_SIZE 512 | |
100 | #define MAX_DEVS ((int)(MAX_SB_SIZE - sizeof(struct mdp_superblock_1)) / 2) | |
41226756 JS |
101 | #define SUPER1_SIZE (MAX_SB_SIZE + BM_SUPER_SIZE \ |
102 | + sizeof(struct misc_dev_info)) | |
911cead7 | 103 | |
bee8ec56 NB |
104 | struct misc_dev_info { |
105 | __u64 device_size; | |
106 | }; | |
107 | ||
d2cd3ffc NB |
108 | /* feature_map bits */ |
109 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
110 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
111 | * must be honoured | |
112 | */ | |
b674b5b8 | 113 | #define MD_FEATURE_RESHAPE_ACTIVE 4 |
bf95d0f3 | 114 | #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */ |
d2cd3ffc | 115 | |
bf95d0f3 | 116 | #define MD_FEATURE_ALL (1|2|4|8) |
d2cd3ffc | 117 | |
570c0542 | 118 | #ifndef offsetof |
067db4df | 119 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) |
570c0542 | 120 | #endif |
82d9eba6 NB |
121 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
122 | { | |
123 | unsigned int disk_csum, csum; | |
124 | unsigned long long newcsum; | |
125 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
126 | unsigned int *isuper = (unsigned int*)sb; | |
82d9eba6 NB |
127 | |
128 | /* make sure I can count... */ | |
129 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
130 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
131 | sizeof(struct mdp_superblock_1) != 256) { | |
132 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
133 | } | |
134 | ||
135 | disk_csum = sb->sb_csum; | |
136 | sb->sb_csum = 0; | |
137 | newcsum = 0; | |
e4c72d1d | 138 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
139 | newcsum += __le32_to_cpu(*isuper); |
140 | isuper++; | |
141 | } | |
82d9eba6 NB |
142 | |
143 | if (size == 2) | |
144 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
145 | ||
146 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
147 | sb->sb_csum = disk_csum; | |
83205b64 | 148 | return __cpu_to_le32(csum); |
82d9eba6 NB |
149 | } |
150 | ||
308340aa JS |
151 | /* |
152 | * Information related to file descriptor used for aligned reads/writes. | |
153 | * Cache the block size. | |
154 | */ | |
155 | struct align_fd { | |
156 | int fd; | |
157 | int blk_sz; | |
158 | }; | |
159 | ||
160 | static void init_afd(struct align_fd *afd, int fd) | |
161 | { | |
162 | afd->fd = fd; | |
163 | ||
164 | if (ioctl(afd->fd, BLKSSZGET, &afd->blk_sz) != 0) | |
165 | afd->blk_sz = 512; | |
166 | } | |
167 | ||
5ea022a1 | 168 | static char abuf[4096+4096]; |
308340aa | 169 | static int aread(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
170 | { |
171 | /* aligned read. | |
172 | * On devices with a 4K sector size, we need to read | |
173 | * the full sector and copy relevant bits into | |
174 | * the buffer | |
175 | */ | |
6ef89052 | 176 | int bsize, iosize; |
5ea022a1 N |
177 | char *b; |
178 | int n; | |
6ef89052 | 179 | |
308340aa JS |
180 | bsize = afd->blk_sz; |
181 | ||
182 | if (!bsize || bsize > 4096 || len > 4096) { | |
183 | if (!bsize) | |
184 | fprintf(stderr, "WARNING - aread() called with " | |
185 | "invalid block size\n"); | |
5ea022a1 | 186 | return -1; |
308340aa | 187 | } |
0a2f1894 | 188 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 189 | |
6ef89052 N |
190 | for (iosize = 0; iosize < len; iosize += bsize) |
191 | ; | |
308340aa | 192 | n = read(afd->fd, b, iosize); |
5ea022a1 N |
193 | if (n <= 0) |
194 | return n; | |
308340aa | 195 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
196 | if (n > len) |
197 | n = len; | |
198 | memcpy(buf, b, n); | |
199 | return n; | |
200 | } | |
201 | ||
308340aa | 202 | static int awrite(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
203 | { |
204 | /* aligned write. | |
205 | * On devices with a 4K sector size, we need to write | |
206 | * the full sector. We pre-read if the sector is larger | |
207 | * than the write. | |
208 | * The address must be sector-aligned. | |
209 | */ | |
6ef89052 | 210 | int bsize, iosize; |
5ea022a1 N |
211 | char *b; |
212 | int n; | |
308340aa JS |
213 | |
214 | bsize = afd->blk_sz; | |
215 | if (!bsize || bsize > 4096 || len > 4096) { | |
216 | if (!bsize) | |
217 | fprintf(stderr, "WARNING - awrite() called with " | |
218 | "invalid block size\n"); | |
5ea022a1 | 219 | return -1; |
308340aa | 220 | } |
0a2f1894 | 221 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 222 | |
6ef89052 N |
223 | for (iosize = 0; iosize < len ; iosize += bsize) |
224 | ; | |
225 | ||
226 | if (len != iosize) { | |
308340aa | 227 | n = read(afd->fd, b, iosize); |
6ef89052 N |
228 | if (n <= 0) |
229 | return n; | |
308340aa | 230 | lseek(afd->fd, -n, 1); |
6ef89052 N |
231 | } |
232 | ||
5ea022a1 | 233 | memcpy(b, buf, len); |
308340aa | 234 | n = write(afd->fd, b, iosize); |
5ea022a1 N |
235 | if (n <= 0) |
236 | return n; | |
308340aa | 237 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
238 | return len; |
239 | } | |
240 | ||
c7654afc | 241 | #ifndef MDASSEMBLE |
3da92f27 | 242 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 243 | { |
3da92f27 | 244 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 245 | time_t atime; |
f21e18ca | 246 | unsigned int d; |
e8e1c176 | 247 | int role; |
4180aa4d | 248 | int delta_extra = 0; |
82d9eba6 NB |
249 | int i; |
250 | char *c; | |
a1cbd7d0 | 251 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 252 | int layout; |
a17a3de3 | 253 | unsigned long long sb_offset; |
82d9eba6 NB |
254 | |
255 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
256 | printf(" Version : 1"); |
257 | sb_offset = __le64_to_cpu(sb->super_offset); | |
258 | if (sb_offset <= 4) | |
259 | printf(".1\n"); | |
260 | else if (sb_offset <= 8) | |
261 | printf(".2\n"); | |
262 | else | |
263 | printf(".0\n"); | |
91eedefc | 264 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
265 | printf(" Array UUID : "); |
266 | for (i=0; i<16; i++) { | |
82d9eba6 | 267 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 268 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
269 | } |
270 | printf("\n"); | |
a1cbd7d0 NB |
271 | printf(" Name : %.32s", sb->set_name); |
272 | if (l > 0 && l < 32 && | |
273 | sb->set_name[l] == ':' && | |
274 | strncmp(sb->set_name, homehost, l) == 0) | |
275 | printf(" (local to host %s)", homehost); | |
276 | printf("\n"); | |
82d9eba6 NB |
277 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
278 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
279 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
280 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
281 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
282 | printf("\n"); | |
5cda0964 | 283 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
284 | (unsigned long long)__le64_to_cpu(sb->data_size), |
285 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 286 | if (__le32_to_cpu(sb->level) > 0) { |
d4633e06 | 287 | int ddsks = 0, ddsks_denom = 1; |
b674b5b8 NB |
288 | switch(__le32_to_cpu(sb->level)) { |
289 | case 1: ddsks=1;break; | |
290 | case 4: | |
83205b64 NB |
291 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
292 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
293 | case 10: | |
294 | layout = __le32_to_cpu(sb->layout); | |
d4633e06 N |
295 | ddsks = __le32_to_cpu(sb->raid_disks); |
296 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
b674b5b8 | 297 | } |
d4633e06 N |
298 | if (ddsks) { |
299 | long long asize = __le64_to_cpu(sb->size); | |
300 | asize = (asize << 9) * ddsks / ddsks_denom; | |
83205b64 | 301 | printf(" Array Size : %llu%s\n", |
d4633e06 N |
302 | asize >> 10, human_size(asize)); |
303 | } | |
b674b5b8 | 304 | if (sb->size != sb->data_size) |
5cda0964 | 305 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
306 | (unsigned long long)__le64_to_cpu(sb->size), |
307 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 308 | } |
82d9eba6 | 309 | if (sb->data_offset) |
199171a2 NB |
310 | printf(" Data Offset : %llu sectors\n", |
311 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
312 | printf(" Super Offset : %llu sectors\n", | |
313 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc NB |
314 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
315 | printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
a3fd117c | 316 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
317 | printf(" Device UUID : "); |
318 | for (i=0; i<16; i++) { | |
82d9eba6 | 319 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 320 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
321 | } |
322 | printf("\n"); | |
b674b5b8 | 323 | printf("\n"); |
91eedefc NB |
324 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
325 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 326 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
8fac0577 | 327 | } |
bf95d0f3 | 328 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 329 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
330 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
331 | if (__le32_to_cpu(sb->delta_disks)) { | |
332 | printf(" Delta Devices : %d", __le32_to_cpu(sb->delta_disks)); | |
4180aa4d N |
333 | printf(" (%d->%d)\n", |
334 | __le32_to_cpu(sb->raid_disks)-__le32_to_cpu(sb->delta_disks), | |
335 | __le32_to_cpu(sb->raid_disks)); | |
336 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
337 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
338 | } |
339 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
340 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
341 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
342 | } | |
343 | if (__le32_to_cpu(sb->new_layout) != __le32_to_cpu(sb->layout)) { | |
344 | if (__le32_to_cpu(sb->level) == 5) { | |
345 | c = map_num(r5layout, __le32_to_cpu(sb->new_layout)); | |
346 | printf(" New 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->new_layout)); | |
350 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
351 | } | |
b674b5b8 | 352 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
353 | printf(" New Layout :"); |
354 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
355 | printf("\n"); | |
b674b5b8 NB |
356 | } |
357 | } | |
358 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
359 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
360 | printf("\n"); | |
361 | } | |
dfd4d8ee | 362 | if (sb->devflags) { |
62184891 | 363 | printf(" Flags :"); |
34163fc7 | 364 | if (sb->devflags & WriteMostly1) |
dfd4d8ee NB |
365 | printf(" write-mostly"); |
366 | printf("\n"); | |
367 | } | |
82d9eba6 NB |
368 | |
369 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
370 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
371 | ||
bf95d0f3 N |
372 | if (sb->bblog_size && sb->bblog_offset) { |
373 | printf(" Bad Block Log : %d entries available at offset %ld sectors", | |
374 | __le16_to_cpu(sb->bblog_size)*512/8, | |
375 | (long)__le32_to_cpu(sb->bblog_offset)); | |
376 | if (sb->feature_map & | |
377 | __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
378 | printf(" - bad blocks present."); | |
379 | printf("\n"); | |
380 | } | |
381 | ||
382 | ||
82d9eba6 NB |
383 | if (calc_sb_1_csum(sb) == sb->sb_csum) |
384 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
385 | else | |
386 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
387 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 388 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
389 | printf("\n"); |
390 | if (__le32_to_cpu(sb->level) == 5) { | |
391 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
392 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
393 | } | |
fe77a154 N |
394 | if (__le32_to_cpu(sb->level) == 6) { |
395 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
396 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
397 | } | |
265e0f17 NB |
398 | if (__le32_to_cpu(sb->level) == 10) { |
399 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
400 | printf(" Layout :"); |
401 | print_r10_layout(lo); | |
402 | printf("\n"); | |
265e0f17 | 403 | } |
82d9eba6 NB |
404 | switch(__le32_to_cpu(sb->level)) { |
405 | case 0: | |
406 | case 4: | |
407 | case 5: | |
d2cd3ffc NB |
408 | case 6: |
409 | case 10: | |
b674b5b8 | 410 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
411 | break; |
412 | case -1: | |
b674b5b8 | 413 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
414 | break; |
415 | default: break; | |
416 | } | |
417 | printf("\n"); | |
e8e1c176 N |
418 | #if 0 |
419 | /* This turns out to just be confusing */ | |
c3684618 NB |
420 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
421 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
422 | if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff) | |
423 | break; | |
424 | for (d=0; d < i; d++) { | |
425 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
426 | if (d) printf(", "); | |
427 | if (role == 0xffff) printf("empty"); | |
428 | else if(role == 0xfffe) printf("failed"); | |
429 | else printf("%d", role); | |
430 | } | |
431 | printf(")\n"); | |
e8e1c176 N |
432 | #endif |
433 | printf(" Device Role : "); | |
434 | d = __le32_to_cpu(sb->dev_number); | |
4180aa4d | 435 | if (d < __le32_to_cpu(sb->max_dev)) |
e8e1c176 N |
436 | role = __le16_to_cpu(sb->dev_roles[d]); |
437 | else | |
438 | role = 0xFFFF; | |
439 | if (role >= 0xFFFE) | |
440 | printf("spare\n"); | |
441 | else | |
442 | printf("Active device %d\n", role); | |
443 | ||
82d9eba6 | 444 | printf(" Array State : "); |
4180aa4d | 445 | for (d=0; d<__le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 446 | int cnt = 0; |
f21e18ca | 447 | unsigned int i; |
82d9eba6 | 448 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 449 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 450 | if (role == d) |
82d9eba6 | 451 | cnt++; |
82d9eba6 NB |
452 | } |
453 | if (cnt > 1) printf("?"); | |
e8e1c176 N |
454 | else if (cnt == 1) printf("A"); |
455 | else printf ("."); | |
82d9eba6 | 456 | } |
e8e1c176 N |
457 | #if 0 |
458 | /* This is confusing too */ | |
6fbba4c9 | 459 | faulty = 0; |
82d9eba6 NB |
460 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
461 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
6fbba4c9 NB |
462 | if (role == 0xFFFE) |
463 | faulty++; | |
82d9eba6 | 464 | } |
82d9eba6 | 465 | if (faulty) printf(" %d failed", faulty); |
e8e1c176 N |
466 | #endif |
467 | printf(" ('A' == active, '.' == missing)"); | |
82d9eba6 NB |
468 | printf("\n"); |
469 | } | |
470 | ||
471 | ||
061f2c6a | 472 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 473 | { |
3da92f27 | 474 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 475 | int i; |
a17a3de3 | 476 | unsigned long long sb_offset; |
2998bc01 | 477 | char *nm; |
b015e6c2 | 478 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
479 | |
480 | nm = strchr(sb->set_name, ':'); | |
481 | if (nm) | |
482 | nm++; | |
483 | else if (sb->set_name[0]) | |
484 | nm = sb->set_name; | |
485 | else | |
cf8de691 | 486 | nm = NULL; |
82d9eba6 | 487 | |
061f2c6a N |
488 | printf("ARRAY%s%s", nm ? " /dev/md/":"", nm); |
489 | if (verbose && c) | |
490 | printf(" level=%s", c); | |
a17a3de3 DL |
491 | sb_offset = __le64_to_cpu(sb->super_offset); |
492 | if (sb_offset <= 4) | |
e9a0e728 | 493 | printf(" metadata=1.1 "); |
a17a3de3 | 494 | else if (sb_offset <= 8) |
e9a0e728 | 495 | printf(" metadata=1.2 "); |
a17a3de3 | 496 | else |
e9a0e728 | 497 | printf(" metadata=1.0 "); |
061f2c6a N |
498 | if (verbose) |
499 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
500 | printf("UUID="); | |
82d9eba6 | 501 | for (i=0; i<16; i++) { |
82d9eba6 | 502 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 503 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 504 | } |
947fd4dd NB |
505 | if (sb->set_name[0]) |
506 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
507 | printf("\n"); |
508 | } | |
509 | ||
0d726f17 KS |
510 | static void export_examine_super1(struct supertype *st) |
511 | { | |
512 | struct mdp_superblock_1 *sb = st->sb; | |
513 | int i; | |
514 | int len = 32; | |
80730bae | 515 | int layout; |
0d726f17 KS |
516 | |
517 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
518 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
519 | for (i=0; i<32; i++) | |
520 | if (sb->set_name[i] == '\n' || | |
521 | sb->set_name[i] == '\0') { | |
522 | len = i; | |
523 | break; | |
524 | } | |
525 | if (len) | |
526 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
80730bae MN |
527 | if (__le32_to_cpu(sb->level) > 0) { |
528 | int ddsks = 0, ddsks_denom = 1; | |
529 | switch(__le32_to_cpu(sb->level)) { | |
530 | case 1: ddsks=1;break; | |
531 | case 4: | |
532 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; | |
533 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
534 | case 10: | |
535 | layout = __le32_to_cpu(sb->layout); | |
536 | ddsks = __le32_to_cpu(sb->raid_disks); | |
537 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
538 | } | |
539 | if (ddsks) { | |
540 | long long asize = __le64_to_cpu(sb->size); | |
541 | asize = (asize << 9) * ddsks / ddsks_denom; | |
542 | printf("MD_ARRAY_SIZE=%s\n",human_size_brief(asize,JEDEC)); | |
543 | } | |
544 | } | |
0d726f17 KS |
545 | printf("MD_UUID="); |
546 | for (i=0; i<16; i++) { | |
547 | if ((i&3)==0 && i != 0) printf(":"); | |
548 | printf("%02x", sb->set_uuid[i]); | |
549 | } | |
550 | printf("\n"); | |
551 | printf("MD_UPDATE_TIME=%llu\n", | |
552 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
553 | printf("MD_DEV_UUID="); | |
554 | for (i=0; i<16; i++) { | |
555 | if ((i&3)==0 && i != 0) printf(":"); | |
556 | printf("%02x", sb->device_uuid[i]); | |
557 | } | |
558 | printf("\n"); | |
559 | printf("MD_EVENTS=%llu\n", | |
560 | (unsigned long long)__le64_to_cpu(sb->events)); | |
561 | } | |
562 | ||
3da92f27 | 563 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 564 | { |
3da92f27 | 565 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 566 | int i; |
b6750aa8 | 567 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 568 | |
b6750aa8 NB |
569 | printf(" Name : %.32s", sb->set_name); |
570 | if (l > 0 && l < 32 && | |
571 | sb->set_name[l] == ':' && | |
572 | strncmp(sb->set_name, homehost, l) == 0) | |
573 | printf(" (local to host %s)", homehost); | |
574 | printf("\n UUID : "); | |
82d9eba6 | 575 | for (i=0; i<16; i++) { |
82d9eba6 | 576 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 577 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 578 | } |
570c0542 | 579 | printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
580 | } |
581 | ||
3da92f27 | 582 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 583 | { |
3da92f27 | 584 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
585 | int i; |
586 | ||
947fd4dd NB |
587 | if (sb->set_name[0]) |
588 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
589 | printf(" UUID="); |
590 | for (i=0; i<16; i++) { | |
82d9eba6 | 591 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 592 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
593 | } |
594 | } | |
595 | ||
0d726f17 | 596 | static void export_detail_super1(struct supertype *st) |
54bad364 | 597 | { |
3da92f27 | 598 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
599 | int i; |
600 | int len = 32; | |
601 | ||
602 | for (i=0; i<32; i++) | |
603 | if (sb->set_name[i] == '\n' || | |
604 | sb->set_name[i] == '\0') { | |
605 | len = i; | |
606 | break; | |
607 | } | |
608 | if (len) | |
609 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
610 | } |
611 | ||
c7654afc NB |
612 | #endif |
613 | ||
3da92f27 | 614 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 615 | { |
3da92f27 | 616 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
617 | int l = homehost ? strlen(homehost) : 0; |
618 | ||
619 | return (l > 0 && l < 32 && | |
620 | sb->set_name[l] == ':' && | |
621 | strncmp(sb->set_name, homehost, l) == 0); | |
622 | } | |
623 | ||
3da92f27 | 624 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 625 | { |
3da92f27 | 626 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
627 | char *cuuid = (char*)uuid; |
628 | int i; | |
629 | for (i=0; i<16; i++) | |
630 | cuuid[i] = super->set_uuid[i]; | |
631 | } | |
632 | ||
a5d85af7 | 633 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 634 | { |
3da92f27 | 635 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 636 | int working = 0; |
f21e18ca | 637 | unsigned int i; |
a5d85af7 N |
638 | unsigned int role; |
639 | unsigned int map_disks = info->array.raid_disks; | |
82d9eba6 | 640 | |
95eeceeb | 641 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 642 | info->array.major_version = 1; |
b8ac1967 | 643 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
644 | info->array.patch_version = 0; |
645 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
646 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 647 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
648 | info->array.md_minor = -1; |
649 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 650 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 651 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c | 652 | info->array.state = |
d5977056 | 653 | (__le64_to_cpu(sb->resync_offset) == MaxSector) |
4855f95c | 654 | ? 1 : 0; |
353632d9 NB |
655 | |
656 | info->data_offset = __le64_to_cpu(sb->data_offset); | |
657 | info->component_size = __le64_to_cpu(sb->size); | |
c0c1acd6 | 658 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) |
34a13953 | 659 | info->bitmap_offset = (int32_t)__le32_to_cpu(sb->bitmap_offset); |
82d9eba6 NB |
660 | |
661 | info->disk.major = 0; | |
662 | info->disk.minor = 0; | |
fbf8a0b7 | 663 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 | 664 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
911cead7 | 665 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) |
82d9eba6 NB |
666 | role = 0xfffe; |
667 | else | |
668 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
669 | ||
670 | info->disk.raid_disk = -1; | |
671 | switch(role) { | |
672 | case 0xFFFF: | |
f22385f9 | 673 | info->disk.state = 0; /* spare: not active, not sync, not faulty */ |
82d9eba6 NB |
674 | break; |
675 | case 0xFFFE: | |
676 | info->disk.state = 1; /* faulty */ | |
677 | break; | |
678 | default: | |
679 | info->disk.state = 6; /* active and in sync */ | |
680 | info->disk.raid_disk = role; | |
681 | } | |
cb099724 N |
682 | if (sb->devflags & WriteMostly1) |
683 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
82d9eba6 | 684 | info->events = __le64_to_cpu(sb->events); |
1522c538 | 685 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 686 | info->safe_mode_delay = 200; |
82d9eba6 NB |
687 | |
688 | memcpy(info->uuid, sb->set_uuid, 16); | |
689 | ||
31317663 NB |
690 | strncpy(info->name, sb->set_name, 32); |
691 | info->name[32] = 0; | |
947fd4dd | 692 | |
921d9e16 N |
693 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
694 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
695 | else | |
696 | info->recovery_start = MaxSector; | |
697 | ||
353632d9 NB |
698 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
699 | info->reshape_active = 1; | |
700 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); | |
701 | info->new_level = __le32_to_cpu(sb->new_level); | |
702 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
703 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 704 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
705 | if (info->delta_disks < 0) |
706 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
707 | } else |
708 | info->reshape_active = 0; | |
709 | ||
6e75048b AK |
710 | info->recovery_blocked = info->reshape_active; |
711 | ||
a5d85af7 N |
712 | if (map) |
713 | for (i=0; i<map_disks; i++) | |
714 | map[i] = 0; | |
f21e18ca | 715 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 716 | role = __le16_to_cpu(sb->dev_roles[i]); |
a5d85af7 | 717 | if (/*role == 0xFFFF || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 718 | working++; |
a5d85af7 N |
719 | if (map && role < map_disks) |
720 | map[role] = 1; | |
721 | } | |
82d9eba6 NB |
722 | } |
723 | ||
724 | info->array.working_disks = working; | |
725 | } | |
726 | ||
00bbdbda N |
727 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
728 | { | |
729 | struct mdinfo *info; | |
730 | ||
731 | if (subarray) | |
732 | return NULL; | |
733 | ||
503975b9 | 734 | info = xmalloc(sizeof(*info)); |
00bbdbda N |
735 | getinfo_super1(st, info, NULL); |
736 | return info; | |
737 | } | |
738 | ||
68c7d6d7 | 739 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 740 | char *update, |
e5eac01f NB |
741 | char *devname, int verbose, |
742 | int uuid_set, char *homehost) | |
82d9eba6 | 743 | { |
5a31170d N |
744 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
745 | * if any change was made. For others, the return value is | |
746 | * ignored. | |
c4d831e1 | 747 | */ |
82d9eba6 | 748 | int rv = 0; |
3da92f27 | 749 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 750 | |
67a8c82d NB |
751 | if (strcmp(update, "force-one")==0) { |
752 | /* Not enough devices for a working array, | |
753 | * so bring this one up-to-date | |
754 | */ | |
c4d831e1 NB |
755 | if (sb->events != __cpu_to_le64(info->events)) |
756 | rv = 1; | |
6d3d5804 | 757 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 758 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
759 | /* Degraded array and 'force' requests to |
760 | * maybe need to mark it 'clean'. | |
761 | */ | |
82d9eba6 NB |
762 | switch(__le32_to_cpu(sb->level)) { |
763 | case 5: case 4: case 6: | |
764 | /* need to force clean */ | |
b7528a20 | 765 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 766 | rv = 1; |
b7528a20 | 767 | sb->resync_offset = MaxSector; |
82d9eba6 | 768 | } |
1e2b2765 | 769 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
770 | int d = info->disk.number; |
771 | int want; | |
772 | if (info->disk.state == 6) | |
a2ce5a1a | 773 | want = info->disk.raid_disk; |
82d9eba6 NB |
774 | else |
775 | want = 0xFFFF; | |
a2ce5a1a N |
776 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
777 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
778 | rv = 1; |
779 | } | |
d43494fc N |
780 | if (info->reshape_active && |
781 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
782 | info->delta_disks >= 0 && | |
783 | info->reshape_progress < __le64_to_cpu(sb->reshape_position)) { | |
784 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
785 | rv = 1; | |
786 | } | |
787 | if (info->reshape_active && | |
788 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
789 | info->delta_disks < 0 && | |
790 | info->reshape_progress > __le64_to_cpu(sb->reshape_position)) { | |
791 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
792 | rv = 1; | |
793 | } | |
1e2b2765 | 794 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 795 | unsigned int i; |
1c6cb603 | 796 | int rfd, fd; |
f21e18ca | 797 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f NB |
798 | |
799 | for (i=0 ; i < max ; i++) | |
800 | if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe) | |
801 | break; | |
802 | sb->dev_number = __cpu_to_le32(i); | |
803 | info->disk.number = i; | |
804 | if (max >= __le32_to_cpu(sb->max_dev)) | |
805 | sb->max_dev = __cpu_to_le32(max+1); | |
806 | ||
807 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
808 | read(rfd, sb->device_uuid, 16) != 16) { | |
caa0f6c6 N |
809 | __u32 r[4] = {random(), random(), random(), random()}; |
810 | memcpy(sb->device_uuid, r, 16); | |
f752781f | 811 | } |
7cbeb80e N |
812 | if (rfd >= 0) |
813 | close(rfd); | |
f752781f NB |
814 | |
815 | sb->dev_roles[i] = | |
816 | __cpu_to_le16(info->disk.raid_disk); | |
1c6cb603 N |
817 | |
818 | fd = open(devname, O_RDONLY); | |
819 | if (fd >= 0) { | |
820 | unsigned long long ds; | |
821 | get_dev_size(fd, devname, &ds); | |
822 | close(fd); | |
823 | ds >>= 9; | |
824 | if (__le64_to_cpu(sb->super_offset) < | |
825 | __le64_to_cpu(sb->data_offset)) { | |
826 | sb->data_size = __cpu_to_le64( | |
827 | ds - __le64_to_cpu(sb->data_offset)); | |
828 | } else { | |
829 | ds -= 8*2; | |
830 | ds &= ~(unsigned long long)(4*2-1); | |
831 | sb->super_offset = __cpu_to_le64(ds); | |
832 | sb->data_size = __cpu_to_le64( | |
833 | ds - __le64_to_cpu(sb->data_offset)); | |
834 | } | |
835 | } | |
1e2b2765 | 836 | } else if (strcmp(update, "linear-grow-update") == 0) { |
82d9eba6 | 837 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
838 | sb->dev_roles[info->disk.number] = |
839 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 840 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 841 | /* make sure resync happens */ |
434b7755 | 842 | sb->resync_offset = 0ULL; |
1e2b2765 | 843 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 844 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 845 | |
14263cf1 NB |
846 | if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) { |
847 | struct bitmap_super_s *bm; | |
911cead7 | 848 | bm = (struct bitmap_super_s*)(st->sb+MAX_SB_SIZE); |
bf4fb153 | 849 | memcpy(bm->uuid, sb->set_uuid, 16); |
14263cf1 | 850 | } |
5a31170d N |
851 | } else if (strcmp(update, "no-bitmap") == 0) { |
852 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
688e99a7 N |
853 | } else if (strcmp(update, "bbl") == 0) { |
854 | /* only possible if there is room after the bitmap, or if | |
855 | * there is no bitmap | |
856 | */ | |
857 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
858 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
859 | long bitmap_offset = (long)__le64_to_cpu(sb->bitmap_offset); | |
860 | long bm_sectors = 0; | |
861 | long space; | |
862 | ||
863 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
864 | struct bitmap_super_s *bsb; | |
865 | bsb = (struct bitmap_super_s *)(((char*)sb)+MAX_SB_SIZE); | |
866 | bm_sectors = bitmap_sectors(bsb); | |
867 | } | |
868 | ||
869 | if (sb_offset < data_offset) { | |
870 | /* 1.1 or 1.2. Put bbl just before data | |
871 | */ | |
872 | long bb_offset; | |
873 | space = data_offset - sb_offset; | |
874 | bb_offset = space - 8; | |
875 | if (bm_sectors && bitmap_offset > 0) | |
876 | space -= (bitmap_offset + bm_sectors); | |
877 | else | |
878 | space -= 8; /* The superblock */ | |
879 | if (space >= 8) { | |
880 | sb->bblog_size = __cpu_to_le16(8); | |
881 | sb->bblog_offset = __cpu_to_le32(bb_offset); | |
882 | } | |
883 | } else { | |
884 | /* 1.0 - Put bbl just before super block */ | |
885 | if (bm_sectors && bitmap_offset < 0) | |
886 | space = -bitmap_offset - bm_sectors; | |
887 | else | |
888 | space = sb_offset - data_offset - | |
889 | __le64_to_cpu(sb->data_size); | |
890 | if (space >= 8) { | |
891 | sb->bblog_size = __cpu_to_le16(8); | |
892 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
893 | } | |
894 | } | |
895 | } else if (strcmp(update, "no-bbl") == 0) { | |
896 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
897 | pr_err("Cannot remove active bbl from %s\n",devname); | |
898 | else { | |
899 | sb->bblog_size = 0; | |
900 | sb->bblog_shift = 0; | |
901 | sb->bblog_offset = 0; | |
902 | } | |
1e2b2765 | 903 | } else if (strcmp(update, "homehost") == 0 && |
0f23aa88 | 904 | homehost) { |
0237e0ca NB |
905 | char *c; |
906 | update = "name"; | |
907 | c = strchr(sb->set_name, ':'); | |
908 | if (c) | |
909 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
910 | else | |
911 | strncpy(info->name, sb->set_name, 32); | |
26a0b8fd | 912 | info->name[32] = 0; |
1e2b2765 | 913 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
914 | if (info->name[0] == 0) |
915 | sprintf(info->name, "%d", info->array.md_minor); | |
916 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
917 | if (homehost && | |
918 | strchr(info->name, ':') == NULL && | |
919 | strlen(homehost)+1+strlen(info->name) < 32) { | |
920 | strcpy(sb->set_name, homehost); | |
921 | strcat(sb->set_name, ":"); | |
922 | strcat(sb->set_name, info->name); | |
923 | } else | |
924 | strcpy(sb->set_name, info->name); | |
1e2b2765 | 925 | } else if (strcmp(update, "devicesize") == 0 && |
bee8ec56 NB |
926 | __le64_to_cpu(sb->super_offset) < |
927 | __le64_to_cpu(sb->data_offset)) { | |
928 | /* set data_size to device size less data_offset */ | |
929 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
911cead7 | 930 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); |
eb9199fb NB |
931 | printf("Size was %llu\n", (unsigned long long) |
932 | __le64_to_cpu(sb->data_size)); | |
bee8ec56 NB |
933 | sb->data_size = __cpu_to_le64( |
934 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
eb9199fb NB |
935 | printf("Size is %llu\n", (unsigned long long) |
936 | __le64_to_cpu(sb->data_size)); | |
1e2b2765 | 937 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 938 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
16715c01 DL |
939 | else if (strcmp(update, "writemostly")==0) |
940 | sb->devflags |= WriteMostly1; | |
941 | else if (strcmp(update, "readwrite")==0) | |
942 | sb->devflags &= ~WriteMostly1; | |
1e2b2765 N |
943 | else |
944 | rv = -1; | |
82d9eba6 NB |
945 | |
946 | sb->sb_csum = calc_sb_1_csum(sb); | |
947 | return rv; | |
948 | } | |
949 | ||
3da92f27 | 950 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
3d3dd91e | 951 | unsigned long long size, char *name, char *homehost, int *uuid) |
82d9eba6 | 952 | { |
6416d527 | 953 | struct mdp_superblock_1 *sb; |
82d9eba6 | 954 | int spares; |
34163fc7 | 955 | int rfd; |
05697ec1 | 956 | char defname[10]; |
911cead7 | 957 | int sbsize; |
6416d527 | 958 | |
3c0bcd46 | 959 | if (posix_memalign((void**)&sb, 4096, SUPER1_SIZE) != 0) { |
e7b84f9d | 960 | pr_err("%s could not allocate superblock\n", __func__); |
3d2c4fc7 DW |
961 | return 0; |
962 | } | |
1afa9308 | 963 | memset(sb, 0, SUPER1_SIZE); |
82d9eba6 | 964 | |
64557c33 | 965 | st->sb = sb; |
ba7eb04f | 966 | if (info == NULL) { |
82d9eba6 NB |
967 | /* zeroing superblock */ |
968 | return 0; | |
05697ec1 | 969 | } |
82d9eba6 NB |
970 | |
971 | spares = info->working_disks - info->active_disks; | |
911cead7 | 972 | if (info->raid_disks + spares > MAX_DEVS) { |
e7b84f9d | 973 | pr_err("too many devices requested: %d+%d > %d\n", |
911cead7 | 974 | info->raid_disks , spares, MAX_DEVS); |
82d9eba6 NB |
975 | return 0; |
976 | } | |
977 | ||
82d9eba6 NB |
978 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
979 | sb->major_version = __cpu_to_le32(1); | |
980 | sb->feature_map = 0; | |
981 | sb->pad0 = 0; | |
34163fc7 | 982 | |
350f29f9 NB |
983 | if (uuid) |
984 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
985 | else { | |
3d3dd91e NB |
986 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
987 | read(rfd, sb->set_uuid, 16) != 16) { | |
caa0f6c6 N |
988 | __u32 r[4] = {random(), random(), random(), random()}; |
989 | memcpy(sb->set_uuid, r, 16); | |
3d3dd91e NB |
990 | } |
991 | if (rfd >= 0) close(rfd); | |
34163fc7 | 992 | } |
82d9eba6 | 993 | |
05697ec1 NB |
994 | if (name == NULL || *name == 0) { |
995 | sprintf(defname, "%d", info->md_minor); | |
996 | name = defname; | |
997 | } | |
05697ec1 NB |
998 | if (homehost && |
999 | strchr(name, ':')== NULL && | |
1000 | strlen(homehost)+1+strlen(name) < 32) { | |
1001 | strcpy(sb->set_name, homehost); | |
1002 | strcat(sb->set_name, ":"); | |
1003 | strcat(sb->set_name, name); | |
1004 | } else | |
1005 | strcpy(sb->set_name, name); | |
82d9eba6 NB |
1006 | |
1007 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
1008 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 1009 | sb->layout = __cpu_to_le32(info->layout); |
5dd497ee | 1010 | sb->size = __cpu_to_le64(size*2ULL); |
82d9eba6 NB |
1011 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
1012 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
1013 | ||
1014 | sb->data_offset = __cpu_to_le64(0); | |
1015 | sb->data_size = __cpu_to_le64(0); | |
1016 | sb->super_offset = __cpu_to_le64(0); | |
1017 | sb->recovery_offset = __cpu_to_le64(0); | |
1018 | ||
1019 | sb->utime = sb->ctime; | |
1020 | sb->events = __cpu_to_le64(1); | |
34321279 | 1021 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 1022 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
1023 | else |
1024 | sb->resync_offset = 0; | |
911cead7 N |
1025 | sbsize = sizeof(struct mdp_superblock_1) + 2 * (info->raid_disks + spares); |
1026 | sbsize = ROUND_UP(sbsize, 512); | |
1027 | sb->max_dev = __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
82d9eba6 | 1028 | |
911cead7 | 1029 | memset(sb->dev_roles, 0xff, MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); |
82d9eba6 | 1030 | |
82d9eba6 NB |
1031 | return 1; |
1032 | } | |
1033 | ||
111d01fc NB |
1034 | struct devinfo { |
1035 | int fd; | |
1036 | char *devname; | |
1037 | mdu_disk_info_t disk; | |
1038 | struct devinfo *next; | |
1039 | }; | |
0e600426 | 1040 | #ifndef MDASSEMBLE |
82d9eba6 | 1041 | /* Add a device to the superblock being created */ |
f20c3968 | 1042 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
111d01fc | 1043 | int fd, char *devname) |
82d9eba6 | 1044 | { |
3da92f27 | 1045 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 1046 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc NB |
1047 | struct devinfo *di, **dip; |
1048 | ||
dfd4d8ee | 1049 | if ((dk->state & 6) == 6) /* active, sync */ |
82d9eba6 | 1050 | *rp = __cpu_to_le16(dk->raid_disk); |
412ca2e5 | 1051 | else if ((dk->state & ~2) == 0) /* active or idle -> spare */ |
82d9eba6 | 1052 | *rp = 0xffff; |
34163fc7 | 1053 | else |
82d9eba6 | 1054 | *rp = 0xfffe; |
111d01fc | 1055 | |
f21e18ca | 1056 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
911cead7 | 1057 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) |
9df04a4f | 1058 | sb->max_dev = __cpu_to_le32(dk->number+1); |
8844e291 | 1059 | |
d2ca6449 | 1060 | sb->dev_number = __cpu_to_le32(dk->number); |
16715c01 | 1061 | sb->devflags = 0; /* don't copy another disks flags */ |
d2ca6449 NB |
1062 | sb->sb_csum = calc_sb_1_csum(sb); |
1063 | ||
111d01fc NB |
1064 | dip = (struct devinfo **)&st->info; |
1065 | while (*dip) | |
1066 | dip = &(*dip)->next; | |
503975b9 | 1067 | di = xmalloc(sizeof(struct devinfo)); |
111d01fc NB |
1068 | di->fd = fd; |
1069 | di->devname = devname; | |
1070 | di->disk = *dk; | |
1071 | di->next = NULL; | |
1072 | *dip = di; | |
f20c3968 DW |
1073 | |
1074 | return 0; | |
82d9eba6 | 1075 | } |
0e600426 | 1076 | #endif |
82d9eba6 | 1077 | |
3da92f27 | 1078 | static void locate_bitmap1(struct supertype *st, int fd); |
14263cf1 | 1079 | |
3da92f27 | 1080 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 1081 | { |
3da92f27 | 1082 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 1083 | unsigned long long sb_offset; |
308340aa | 1084 | struct align_fd afd; |
82d9eba6 | 1085 | int sbsize; |
5dd497ee | 1086 | unsigned long long dsize; |
96395475 | 1087 | |
beae1dfe NB |
1088 | if (!get_dev_size(fd, NULL, &dsize)) |
1089 | return 1; | |
1090 | ||
1091 | dsize >>= 9; | |
96395475 | 1092 | |
5dd497ee | 1093 | if (dsize < 24) |
96395475 NB |
1094 | return 2; |
1095 | ||
308340aa JS |
1096 | init_afd(&afd, fd); |
1097 | ||
96395475 NB |
1098 | /* |
1099 | * Calculate the position of the superblock. | |
1100 | * It is always aligned to a 4K boundary and | |
1101 | * depending on minor_version, it can be: | |
1102 | * 0: At least 8K, but less than 12K, from end of device | |
1103 | * 1: At start of device | |
1104 | * 2: 4K from start of device. | |
1105 | */ | |
1106 | switch(st->minor_version) { | |
1107 | case 0: | |
5dd497ee | 1108 | sb_offset = dsize; |
96395475 NB |
1109 | sb_offset -= 8*2; |
1110 | sb_offset &= ~(4*2-1); | |
1111 | break; | |
1112 | case 1: | |
6fbba4c9 | 1113 | sb_offset = 0; |
96395475 NB |
1114 | break; |
1115 | case 2: | |
1116 | sb_offset = 4*2; | |
1117 | break; | |
1118 | default: | |
1119 | return -EINVAL; | |
1120 | } | |
1121 | ||
82d9eba6 | 1122 | |
34163fc7 | 1123 | |
6fbba4c9 NB |
1124 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
1125 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 | 1126 | ) { |
e7b84f9d | 1127 | pr_err("internal error - sb_offset is wrong\n"); |
96395475 NB |
1128 | abort(); |
1129 | } | |
82d9eba6 | 1130 | |
6fbba4c9 | 1131 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
1132 | return 3; |
1133 | ||
0a2f1894 | 1134 | sbsize = ROUND_UP(sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev), 512); |
82d9eba6 | 1135 | |
308340aa | 1136 | if (awrite(&afd, sb, sbsize) != sbsize) |
82d9eba6 NB |
1137 | return 4; |
1138 | ||
14263cf1 NB |
1139 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1140 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
911cead7 | 1141 | (((char*)sb)+MAX_SB_SIZE); |
14263cf1 | 1142 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
3da92f27 | 1143 | locate_bitmap1(st, fd); |
308340aa JS |
1144 | if (awrite(&afd, bm, sizeof(*bm)) != sizeof(*bm)) |
1145 | return 5; | |
14263cf1 NB |
1146 | } |
1147 | } | |
570c0542 | 1148 | fsync(fd); |
82d9eba6 NB |
1149 | return 0; |
1150 | } | |
1151 | ||
3da92f27 | 1152 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1153 | |
2fb749d1 NB |
1154 | static unsigned long choose_bm_space(unsigned long devsize) |
1155 | { | |
1156 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1157 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1158 | * NOTE: result must be multiple of 4K else bad things happen |
1159 | * on 4K-sector devices. | |
2fb749d1 | 1160 | */ |
69646c14 | 1161 | if (devsize < 64*2) return 0; |
2fb749d1 NB |
1162 | if (devsize - 64*2 >= 200*1024*1024*2) |
1163 | return 128*2; | |
1164 | if (devsize - 4*2 > 8*1024*1024*2) | |
1165 | return 64*2; | |
1166 | return 4*2; | |
1167 | } | |
1168 | ||
e8090005 N |
1169 | static void free_super1(struct supertype *st); |
1170 | ||
111d01fc NB |
1171 | #ifndef MDASSEMBLE |
1172 | static int write_init_super1(struct supertype *st) | |
82d9eba6 | 1173 | { |
3da92f27 | 1174 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1175 | struct supertype *refst; |
dfe47e00 | 1176 | int rfd; |
111d01fc | 1177 | int rv = 0; |
f21e18ca | 1178 | unsigned long long bm_space; |
a380e275 | 1179 | unsigned long long reserved; |
111d01fc | 1180 | struct devinfo *di; |
8fac0577 | 1181 | unsigned long long dsize, array_size; |
508a7f16 | 1182 | unsigned long long sb_offset, headroom; |
82d9eba6 | 1183 | |
4687f160 | 1184 | for (di = st->info; di; di = di->next) { |
111d01fc NB |
1185 | if (di->disk.state == 1) |
1186 | continue; | |
a0c8a17f NB |
1187 | if (di->fd < 0) |
1188 | continue; | |
82d9eba6 | 1189 | |
ba728be7 | 1190 | while (Kill(di->devname, NULL, 0, -1, 1) == 0) |
9277cc77 | 1191 | ; |
82d9eba6 | 1192 | |
111d01fc NB |
1193 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1194 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
adbb382b | 1195 | sb->devflags |= WriteMostly1; |
9a88e7b6 | 1196 | else |
adbb382b | 1197 | sb->devflags &= ~WriteMostly1; |
892debc8 | 1198 | |
111d01fc NB |
1199 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
1200 | read(rfd, sb->device_uuid, 16) != 16) { | |
83208785 N |
1201 | __u32 r[4] = {random(), random(), random(), random()}; |
1202 | memcpy(sb->device_uuid, r, 16); | |
111d01fc | 1203 | } |
83208785 N |
1204 | if (rfd >= 0) |
1205 | close(rfd); | |
1206 | ||
111d01fc NB |
1207 | sb->events = 0; |
1208 | ||
e8090005 N |
1209 | refst = dup_super(st); |
1210 | if (load_super1(refst, di->fd, NULL)==0) { | |
1211 | struct mdp_superblock_1 *refsb = refst->sb; | |
111d01fc NB |
1212 | |
1213 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1214 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1215 | /* same array, so preserve events and | |
1216 | * dev_number */ | |
1217 | sb->events = refsb->events; | |
1218 | /* bugs in 2.6.17 and earlier mean the | |
1219 | * dev_number chosen in Manage must be preserved | |
1220 | */ | |
1221 | if (get_linux_version() >= 2006018) | |
1222 | sb->dev_number = refsb->dev_number; | |
1223 | } | |
e8090005 | 1224 | free_super1(refst); |
892debc8 | 1225 | } |
e8090005 | 1226 | free(refst); |
34163fc7 | 1227 | |
40114213 JS |
1228 | if (!get_dev_size(di->fd, NULL, &dsize)) { |
1229 | rv = 1; | |
1230 | goto error_out; | |
1231 | } | |
111d01fc | 1232 | dsize >>= 9; |
82d9eba6 | 1233 | |
111d01fc NB |
1234 | if (dsize < 24) { |
1235 | close(di->fd); | |
40114213 JS |
1236 | rv = 2; |
1237 | goto error_out; | |
111d01fc | 1238 | } |
82d9eba6 NB |
1239 | |
1240 | ||
111d01fc NB |
1241 | /* |
1242 | * Calculate the position of the superblock. | |
1243 | * It is always aligned to a 4K boundary and | |
1244 | * depending on minor_version, it can be: | |
1245 | * 0: At least 8K, but less than 12K, from end of device | |
1246 | * 1: At start of device | |
1247 | * 2: 4K from start of device. | |
1248 | * Depending on the array size, we might leave extra space | |
1249 | * for a bitmap. | |
bf95d0f3 | 1250 | * Also leave 4K for bad-block log. |
111d01fc NB |
1251 | */ |
1252 | array_size = __le64_to_cpu(sb->size); | |
bf95d0f3 N |
1253 | /* work out how much space we left for a bitmap, |
1254 | * Add 8 sectors for bad block log */ | |
1255 | bm_space = choose_bm_space(array_size) + 8; | |
111d01fc | 1256 | |
508a7f16 N |
1257 | /* We try to leave 0.1% at the start for reshape |
1258 | * operations, but limit this to 128Meg (0.1% of 10Gig) | |
1259 | * which is plenty for efficient reshapes | |
1260 | */ | |
1261 | headroom = 128 * 1024 * 2; | |
1262 | while (headroom << 10 > array_size) | |
1263 | headroom >>= 1; | |
1264 | ||
111d01fc NB |
1265 | switch(st->minor_version) { |
1266 | case 0: | |
1267 | sb_offset = dsize; | |
1268 | sb_offset -= 8*2; | |
1269 | sb_offset &= ~(4*2-1); | |
1270 | sb->super_offset = __cpu_to_le64(sb_offset); | |
1271 | sb->data_offset = __cpu_to_le64(0); | |
f21e18ca | 1272 | if (sb_offset < array_size + bm_space) |
a380e275 | 1273 | bm_space = sb_offset - array_size; |
111d01fc | 1274 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
bf95d0f3 N |
1275 | if (bm_space >= 8) { |
1276 | sb->bblog_size = __cpu_to_le16(8); | |
1277 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1278 | } | |
111d01fc NB |
1279 | break; |
1280 | case 1: | |
1281 | sb->super_offset = __cpu_to_le64(0); | |
a380e275 | 1282 | reserved = bm_space + 4*2; |
d9751e06 N |
1283 | if (reserved < headroom) |
1284 | reserved = headroom; | |
1285 | if (reserved + array_size > dsize) | |
1286 | reserved = dsize - array_size; | |
a380e275 N |
1287 | /* Try for multiple of 1Meg so it is nicely aligned */ |
1288 | #define ONE_MEG (2*1024) | |
d9751e06 N |
1289 | if (reserved > ONE_MEG) |
1290 | reserved = (reserved/ONE_MEG) * ONE_MEG; | |
1291 | ||
a380e275 N |
1292 | /* force 4K alignment */ |
1293 | reserved &= ~7ULL; | |
1294 | ||
1295 | sb->data_offset = __cpu_to_le64(reserved); | |
1296 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
bf95d0f3 N |
1297 | if (reserved >= 16) { |
1298 | sb->bblog_size = __cpu_to_le16(8); | |
1299 | sb->bblog_offset = __cpu_to_le32(reserved-8); | |
1300 | } | |
111d01fc NB |
1301 | break; |
1302 | case 2: | |
1303 | sb_offset = 4*2; | |
1304 | sb->super_offset = __cpu_to_le64(4*2); | |
d9751e06 | 1305 | if (4*2 + 4*2 + bm_space + array_size |
111d01fc | 1306 | > dsize) |
d9751e06 | 1307 | bm_space = dsize - array_size |
111d01fc | 1308 | - 4*2 - 4*2; |
a380e275 N |
1309 | |
1310 | reserved = bm_space + 4*2 + 4*2; | |
d9751e06 N |
1311 | if (reserved < headroom) |
1312 | reserved = headroom; | |
1313 | if (reserved + array_size > dsize) | |
1314 | reserved = dsize - array_size; | |
a380e275 N |
1315 | /* Try for multiple of 1Meg so it is nicely aligned */ |
1316 | #define ONE_MEG (2*1024) | |
d9751e06 N |
1317 | if (reserved > ONE_MEG) |
1318 | reserved = (reserved/ONE_MEG) * ONE_MEG; | |
1319 | ||
a380e275 N |
1320 | /* force 4K alignment */ |
1321 | reserved &= ~7ULL; | |
1322 | ||
1323 | sb->data_offset = __cpu_to_le64(reserved); | |
1324 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
bf95d0f3 N |
1325 | if (reserved >= 16+16) { |
1326 | sb->bblog_size = __cpu_to_le16(8); | |
1327 | /* '8' sectors for the bblog, and another '8' | |
1328 | * because we want offset from superblock, not | |
1329 | * start of device. | |
1330 | */ | |
1331 | sb->bblog_offset = __cpu_to_le32(reserved-8-8); | |
1332 | } | |
111d01fc NB |
1333 | break; |
1334 | default: | |
e7b84f9d N |
1335 | pr_err("Failed to write invalid " |
1336 | "metadata format 1.%i to %s\n", | |
1337 | st->minor_version, di->devname); | |
40114213 JS |
1338 | rv = -EINVAL; |
1339 | goto out; | |
111d01fc | 1340 | } |
82d9eba6 | 1341 | |
111d01fc NB |
1342 | sb->sb_csum = calc_sb_1_csum(sb); |
1343 | rv = store_super1(st, di->fd); | |
111d01fc NB |
1344 | if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1)) |
1345 | rv = st->ss->write_bitmap(st, di->fd); | |
1346 | close(di->fd); | |
1347 | di->fd = -1; | |
4687f160 | 1348 | if (rv) |
1349 | goto error_out; | |
111d01fc | 1350 | } |
40114213 JS |
1351 | error_out: |
1352 | if (rv) | |
e7b84f9d N |
1353 | pr_err("Failed to write metadata to %s\n", |
1354 | di->devname); | |
40114213 | 1355 | out: |
82d9eba6 NB |
1356 | return rv; |
1357 | } | |
111d01fc | 1358 | #endif |
82d9eba6 | 1359 | |
64557c33 | 1360 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
1361 | { |
1362 | /* | |
1363 | * return: | |
1364 | * 0 same, or first was empty, and second was copied | |
1365 | * 1 second had wrong number | |
1366 | * 2 wrong uuid | |
1367 | * 3 wrong other info | |
1368 | */ | |
64557c33 NB |
1369 | struct mdp_superblock_1 *first = st->sb; |
1370 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
1371 | |
1372 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
1373 | return 1; | |
1374 | if (second->major_version != __cpu_to_le32(1)) | |
1375 | return 1; | |
1376 | ||
1377 | if (!first) { | |
3c0bcd46 | 1378 | if (posix_memalign((void**)&first, 4096, SUPER1_SIZE) != 0) { |
e7b84f9d | 1379 | pr_err("%s could not allocate superblock\n", __func__); |
3d2c4fc7 DW |
1380 | return 1; |
1381 | } | |
41226756 | 1382 | memcpy(first, second, SUPER1_SIZE); |
64557c33 | 1383 | st->sb = first; |
82d9eba6 NB |
1384 | return 0; |
1385 | } | |
1386 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
1387 | return 2; | |
1388 | ||
1389 | if (first->ctime != second->ctime || | |
1390 | first->level != second->level || | |
1391 | first->layout != second->layout || | |
1392 | first->size != second->size || | |
1393 | first->chunksize != second->chunksize || | |
1394 | first->raid_disks != second->raid_disks) | |
1395 | return 3; | |
1396 | return 0; | |
1397 | } | |
1398 | ||
3da92f27 | 1399 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 1400 | { |
5dd497ee | 1401 | unsigned long long dsize; |
82d9eba6 NB |
1402 | unsigned long long sb_offset; |
1403 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
1404 | int uuid[4]; |
1405 | struct bitmap_super_s *bsb; | |
bee8ec56 | 1406 | struct misc_dev_info *misc; |
308340aa | 1407 | struct align_fd afd; |
82d9eba6 | 1408 | |
3da92f27 | 1409 | free_super1(st); |
82d9eba6 | 1410 | |
308340aa JS |
1411 | init_afd(&afd, fd); |
1412 | ||
a17a3de3 | 1413 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 1414 | int bestvers = -1; |
23dc1ae8 | 1415 | struct supertype tst; |
570c0542 NB |
1416 | __u64 bestctime = 0; |
1417 | /* guess... choose latest ctime */ | |
ef609477 | 1418 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
1419 | tst.ss = &super1; |
1420 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
1421 | switch(load_super1(&tst, fd, devname)) { |
1422 | case 0: super = tst.sb; | |
570c0542 NB |
1423 | if (bestvers == -1 || |
1424 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 1425 | bestvers = tst.minor_version; |
570c0542 NB |
1426 | bestctime = __le64_to_cpu(super->ctime); |
1427 | } | |
1428 | free(super); | |
3da92f27 | 1429 | tst.sb = NULL; |
570c0542 | 1430 | break; |
23dc1ae8 | 1431 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
1432 | case 2: break; /* bad, try next */ |
1433 | } | |
1434 | } | |
570c0542 NB |
1435 | if (bestvers != -1) { |
1436 | int rv; | |
23dc1ae8 NB |
1437 | tst.minor_version = bestvers; |
1438 | tst.ss = &super1; | |
911cead7 | 1439 | tst.max_devs = MAX_DEVS; |
3da92f27 | 1440 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
1441 | if (rv == 0) |
1442 | *st = tst; | |
570c0542 NB |
1443 | return rv; |
1444 | } | |
82d9eba6 NB |
1445 | return 2; |
1446 | } | |
beae1dfe NB |
1447 | if (!get_dev_size(fd, devname, &dsize)) |
1448 | return 1; | |
1449 | dsize >>= 9; | |
82d9eba6 | 1450 | |
5dd497ee | 1451 | if (dsize < 24) { |
82d9eba6 | 1452 | if (devname) |
e7b84f9d | 1453 | pr_err("%s is too small for md: size is %llu sectors.\n", |
5dd497ee | 1454 | devname, dsize); |
82d9eba6 NB |
1455 | return 1; |
1456 | } | |
1457 | ||
1458 | /* | |
1459 | * Calculate the position of the superblock. | |
1460 | * It is always aligned to a 4K boundary and | |
14263cf1 | 1461 | * depending on minor_version, it can be: |
82d9eba6 NB |
1462 | * 0: At least 8K, but less than 12K, from end of device |
1463 | * 1: At start of device | |
1464 | * 2: 4K from start of device. | |
1465 | */ | |
1466 | switch(st->minor_version) { | |
1467 | case 0: | |
5dd497ee | 1468 | sb_offset = dsize; |
82d9eba6 NB |
1469 | sb_offset -= 8*2; |
1470 | sb_offset &= ~(4*2-1); | |
1471 | break; | |
1472 | case 1: | |
1473 | sb_offset = 0; | |
1474 | break; | |
1475 | case 2: | |
1476 | sb_offset = 4*2; | |
1477 | break; | |
1478 | default: | |
1479 | return -EINVAL; | |
1480 | } | |
1481 | ||
1482 | ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */ | |
1483 | ||
1484 | ||
1485 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { | |
1486 | if (devname) | |
e7b84f9d | 1487 | pr_err("Cannot seek to superblock on %s: %s\n", |
82d9eba6 NB |
1488 | devname, strerror(errno)); |
1489 | return 1; | |
1490 | } | |
1491 | ||
3c0bcd46 | 1492 | if (posix_memalign((void**)&super, 4096, SUPER1_SIZE) != 0) { |
e7b84f9d | 1493 | pr_err("%s could not allocate superblock\n", |
3d2c4fc7 DW |
1494 | __func__); |
1495 | return 1; | |
1496 | } | |
82d9eba6 | 1497 | |
308340aa | 1498 | if (aread(&afd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { |
82d9eba6 | 1499 | if (devname) |
e7b84f9d | 1500 | pr_err("Cannot read superblock on %s\n", |
82d9eba6 NB |
1501 | devname); |
1502 | free(super); | |
1503 | return 1; | |
1504 | } | |
1505 | ||
1506 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
1507 | if (devname) | |
e7b84f9d | 1508 | pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", |
82d9eba6 NB |
1509 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); |
1510 | free(super); | |
1511 | return 2; | |
1512 | } | |
1513 | ||
1514 | if (__le32_to_cpu(super->major_version) != 1) { | |
1515 | if (devname) | |
e7b84f9d | 1516 | pr_err("Cannot interpret superblock on %s - version is %d\n", |
82d9eba6 NB |
1517 | devname, __le32_to_cpu(super->major_version)); |
1518 | free(super); | |
1519 | return 2; | |
1520 | } | |
1521 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
1522 | if (devname) | |
e7b84f9d | 1523 | pr_err("No superblock found on %s (super_offset is wrong)\n", |
82d9eba6 NB |
1524 | devname); |
1525 | free(super); | |
1526 | return 2; | |
1527 | } | |
64557c33 | 1528 | st->sb = super; |
14263cf1 | 1529 | |
911cead7 | 1530 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
bee8ec56 | 1531 | |
911cead7 | 1532 | misc = (struct misc_dev_info*) (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE); |
bee8ec56 NB |
1533 | misc->device_size = dsize; |
1534 | ||
14263cf1 NB |
1535 | /* Now check on the bitmap superblock */ |
1536 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
1537 | return 0; | |
1538 | /* Read the bitmap superblock and make sure it looks | |
1539 | * valid. If it doesn't clear the bit. An --assemble --force | |
1540 | * should get that written out. | |
1541 | */ | |
3da92f27 | 1542 | locate_bitmap1(st, fd); |
308340aa | 1543 | if (aread(&afd, bsb, 512) != 512) |
14263cf1 NB |
1544 | goto no_bitmap; |
1545 | ||
3da92f27 | 1546 | uuid_from_super1(st, uuid); |
14263cf1 NB |
1547 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
1548 | memcmp(bsb->uuid, uuid, 16) != 0) | |
1549 | goto no_bitmap; | |
1550 | return 0; | |
1551 | ||
1552 | no_bitmap: | |
c0c1acd6 N |
1553 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) |
1554 | & ~MD_FEATURE_BITMAP_OFFSET); | |
82d9eba6 NB |
1555 | return 0; |
1556 | } | |
1557 | ||
1558 | ||
1559 | static struct supertype *match_metadata_desc1(char *arg) | |
1560 | { | |
503975b9 | 1561 | struct supertype *st = xcalloc(1, sizeof(*st)); |
82d9eba6 | 1562 | |
d1d599ea | 1563 | st->container_dev = NoMdDev; |
82d9eba6 | 1564 | st->ss = &super1; |
911cead7 | 1565 | st->max_devs = MAX_DEVS; |
64557c33 | 1566 | st->sb = NULL; |
9b2a22d3 N |
1567 | /* leading zeros can be safely ignored. --detail generates them. */ |
1568 | while (*arg == '0') | |
1569 | arg++; | |
1570 | if (strcmp(arg, "1.0") == 0 || | |
1571 | strcmp(arg, "1.00") == 0) { | |
82d9eba6 NB |
1572 | st->minor_version = 0; |
1573 | return st; | |
1574 | } | |
9b2a22d3 | 1575 | if (strcmp(arg, "1.1") == 0 || |
50827504 | 1576 | strcmp(arg, "1.01") == 0 |
7d5c3964 | 1577 | ) { |
82d9eba6 NB |
1578 | st->minor_version = 1; |
1579 | return st; | |
1580 | } | |
9b2a22d3 | 1581 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 1582 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 1583 | strcmp(arg, "default") == 0 || |
26f467a9 | 1584 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 1585 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
1586 | st->minor_version = 2; |
1587 | return st; | |
1588 | } | |
a17a3de3 | 1589 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 1590 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
1591 | st->minor_version = -1; |
1592 | return st; | |
1593 | } | |
82d9eba6 NB |
1594 | |
1595 | free(st); | |
1596 | return NULL; | |
1597 | } | |
1598 | ||
34163fc7 NB |
1599 | /* find available size on device with this devsize, using |
1600 | * superblock type st, and reserving 'reserve' sectors for | |
1601 | * a possible bitmap | |
1602 | */ | |
1bf4e2d9 | 1603 | static __u64 avail_size1(struct supertype *st, __u64 devsize) |
82d9eba6 | 1604 | { |
2a528478 | 1605 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
1606 | if (devsize < 24) |
1607 | return 0; | |
1608 | ||
2a528478 N |
1609 | if (super == NULL) |
1610 | /* creating: allow suitable space for bitmap */ | |
1611 | devsize -= choose_bm_space(devsize); | |
1612 | #ifndef MDASSEMBLE | |
1613 | else if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) { | |
1614 | /* hot-add. allow for actual size of bitmap */ | |
1615 | struct bitmap_super_s *bsb; | |
911cead7 | 1616 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
2a528478 N |
1617 | devsize -= bitmap_sectors(bsb); |
1618 | } | |
1619 | #endif | |
88af981f N |
1620 | /* Allow space for bad block log */ |
1621 | if (super && super->bblog_size) | |
1622 | devsize -= __le16_to_cpu(super->bblog_size); | |
1623 | else | |
1624 | devsize -= 8; | |
21e92547 | 1625 | |
a380e275 N |
1626 | if (st->minor_version < 0) |
1627 | /* not specified, so time to set default */ | |
1628 | st->minor_version = 2; | |
1629 | if (super == NULL && st->minor_version > 0) { | |
1630 | /* haven't committed to a size yet, so allow some | |
508a7f16 N |
1631 | * slack for space for reshape. |
1632 | * Limit slack to 128M, but aim for about 0.1% | |
a380e275 | 1633 | */ |
508a7f16 N |
1634 | unsigned long long headroom = 128*1024*2; |
1635 | while ((headroom << 10) > devsize) | |
1636 | headroom >>= 1; | |
1637 | devsize -= headroom; | |
a380e275 | 1638 | } |
34163fc7 NB |
1639 | switch(st->minor_version) { |
1640 | case 0: | |
1bf4e2d9 NB |
1641 | /* at end */ |
1642 | return ((devsize - 8*2 ) & ~(4*2-1)); | |
34163fc7 | 1643 | case 1: |
1bf4e2d9 NB |
1644 | /* at start, 4K for superblock and possible bitmap */ |
1645 | return devsize - 4*2; | |
34163fc7 | 1646 | case 2: |
1bf4e2d9 NB |
1647 | /* 4k from start, 4K for superblock and possible bitmap */ |
1648 | return devsize - (4+4)*2; | |
34163fc7 NB |
1649 | } |
1650 | return 0; | |
1651 | } | |
1652 | ||
1bf4e2d9 | 1653 | static int |
3da92f27 | 1654 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
1655 | int *chunkp, int delay, int write_behind, |
1656 | unsigned long long size, | |
21e92547 | 1657 | int may_change, int major) |
34163fc7 NB |
1658 | { |
1659 | /* | |
c0c1acd6 N |
1660 | * If not may_change, then this is a 'Grow' without sysfs support for |
1661 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
1662 | * If may_change, then this is create or a Grow with sysfs syupport, | |
1663 | * and we can put the bitmap wherever we like. | |
34163fc7 | 1664 | * |
f9c25f1d | 1665 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
1666 | */ |
1667 | ||
1bf4e2d9 | 1668 | unsigned long long bits; |
199171a2 | 1669 | unsigned long long max_bits; |
34163fc7 | 1670 | unsigned long long min_chunk; |
199171a2 | 1671 | long offset; |
88af981f | 1672 | long bbl_offset, bbl_size; |
f21e18ca | 1673 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 1674 | int room = 0; |
c0c1acd6 | 1675 | int creating = 0; |
3da92f27 | 1676 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 1677 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
3b7e9d0c | 1678 | int uuid[4]; |
34163fc7 | 1679 | |
88af981f | 1680 | |
c0c1acd6 N |
1681 | if (__le64_to_cpu(sb->data_size) == 0) |
1682 | /* Must be creating the array, else data_size would be non-zero */ | |
1683 | creating = 1; | |
199171a2 NB |
1684 | switch(st->minor_version) { |
1685 | case 0: | |
a31128d2 N |
1686 | /* either 3K after the superblock (when hot-add), |
1687 | * or some amount of space before. | |
199171a2 | 1688 | */ |
c0c1acd6 | 1689 | if (creating) { |
199171a2 NB |
1690 | /* We are creating array, so we *know* how much room has |
1691 | * been left. | |
1692 | */ | |
1693 | offset = 0; | |
2fb749d1 | 1694 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
88af981f | 1695 | bbl_size = 8; |
199171a2 NB |
1696 | } else { |
1697 | room = __le64_to_cpu(sb->super_offset) | |
1698 | - __le64_to_cpu(sb->data_offset) | |
1699 | - __le64_to_cpu(sb->data_size); | |
88af981f N |
1700 | bbl_size = __le16_to_cpu(sb->bblog_size); |
1701 | if (bbl_size < 8) | |
1702 | bbl_size = 8; | |
1703 | bbl_offset = (__s32)__le32_to_cpu(sb->bblog_offset); | |
1704 | if (bbl_size < -bbl_offset) | |
1705 | bbl_size = -bbl_offset; | |
c0c1acd6 N |
1706 | |
1707 | if (!may_change || (room < 3*2 && | |
199171a2 NB |
1708 | __le32_to_cpu(sb->max_dev) <= 384)) { |
1709 | room = 3*2; | |
1710 | offset = 1*2; | |
88af981f | 1711 | bbl_size = 0; |
199171a2 NB |
1712 | } else { |
1713 | offset = 0; /* means movable offset */ | |
1714 | } | |
1715 | } | |
1716 | break; | |
1717 | case 1: | |
1718 | case 2: /* between superblock and data */ | |
c0c1acd6 | 1719 | if (creating) { |
199171a2 | 1720 | offset = 4*2; |
2fb749d1 | 1721 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
88af981f | 1722 | bbl_size = 8; |
199171a2 NB |
1723 | } else { |
1724 | room = __le64_to_cpu(sb->data_offset) | |
1725 | - __le64_to_cpu(sb->super_offset); | |
88af981f N |
1726 | bbl_size = __le16_to_cpu(sb->bblog_size); |
1727 | if (bbl_size) | |
1728 | room = __le32_to_cpu(sb->bblog_offset) + bbl_size; | |
1729 | else | |
1730 | bbl_size = 8; | |
1731 | ||
c0c1acd6 N |
1732 | if (!may_change) { |
1733 | room -= 2; /* Leave 1K for superblock */ | |
199171a2 | 1734 | offset = 2; |
88af981f | 1735 | bbl_size = 0; |
199171a2 | 1736 | } else { |
c0c1acd6 | 1737 | room -= 4*2; /* leave 4K for superblock */ |
199171a2 NB |
1738 | offset = 4*2; |
1739 | } | |
1740 | } | |
1741 | break; | |
ae491d1e NB |
1742 | default: |
1743 | return 0; | |
199171a2 | 1744 | } |
1bf4e2d9 | 1745 | |
88af981f | 1746 | room -= bbl_size; |
199171a2 NB |
1747 | if (chunk == UnSet && room > 128*2) |
1748 | /* Limit to 128K of bitmap when chunk size not requested */ | |
1749 | room = 128*2; | |
1bf4e2d9 | 1750 | |
199171a2 | 1751 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
1752 | |
1753 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 1754 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
1755 | while (bits > max_bits) { |
1756 | min_chunk *= 2; | |
1757 | bits = (bits+1)/2; | |
1758 | } | |
b8ab2a50 N |
1759 | if (chunk == UnSet) { |
1760 | /* For practical purpose, 64Meg is a good | |
1761 | * default chunk size for internal bitmaps. | |
1762 | */ | |
34163fc7 | 1763 | chunk = min_chunk; |
b8ab2a50 N |
1764 | if (chunk < 64*1024*1024) |
1765 | chunk = 64*1024*1024; | |
1766 | } else if (chunk < min_chunk) | |
34163fc7 | 1767 | return 0; /* chunk size too small */ |
21e92547 NB |
1768 | if (chunk == 0) /* rounding problem */ |
1769 | return 0; | |
34163fc7 | 1770 | |
199171a2 | 1771 | if (offset == 0) { |
a31128d2 N |
1772 | /* start bitmap on a 4K boundary with enough space for |
1773 | * the bitmap | |
1774 | */ | |
199171a2 | 1775 | bits = (size*512) / chunk + 1; |
a31128d2 N |
1776 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
1777 | room *= 8; /* convert 4K blocks to sectors */ | |
88af981f | 1778 | offset = -room - bbl_size; |
199171a2 NB |
1779 | } |
1780 | ||
34a13953 | 1781 | sb->bitmap_offset = (int32_t)__cpu_to_le32(offset); |
34163fc7 | 1782 | |
c0c1acd6 N |
1783 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) |
1784 | | MD_FEATURE_BITMAP_OFFSET); | |
29e766a5 | 1785 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 1786 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 1787 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
1788 | uuid_from_super1(st, uuid); |
1789 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
1790 | bms->chunksize = __cpu_to_le32(chunk); |
1791 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 1792 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 NB |
1793 | bms->write_behind = __cpu_to_le32(write_behind); |
1794 | ||
199171a2 | 1795 | *chunkp = chunk; |
34163fc7 NB |
1796 | return 1; |
1797 | } | |
1798 | ||
3da92f27 | 1799 | static void locate_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1800 | { |
34163fc7 | 1801 | unsigned long long offset; |
1e0d770c NB |
1802 | struct mdp_superblock_1 *sb; |
1803 | int mustfree = 0; | |
34163fc7 | 1804 | |
3da92f27 NB |
1805 | if (!st->sb) { |
1806 | if (st->ss->load_super(st, fd, NULL)) | |
f6d75de8 | 1807 | return; /* no error I hope... */ |
1e0d770c NB |
1808 | mustfree = 1; |
1809 | } | |
3da92f27 | 1810 | sb = st->sb; |
e478dc86 | 1811 | |
1bf4e2d9 | 1812 | offset = __le64_to_cpu(sb->super_offset); |
68754bd1 | 1813 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset); |
1e0d770c | 1814 | if (mustfree) |
f6d75de8 | 1815 | free(sb); |
1bf4e2d9 | 1816 | lseek64(fd, offset<<9, 0); |
34163fc7 NB |
1817 | } |
1818 | ||
3da92f27 | 1819 | static int write_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1820 | { |
3da92f27 | 1821 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 1822 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
34163fc7 | 1823 | int rv = 0; |
d669228f | 1824 | void *buf; |
34163fc7 | 1825 | int towrite, n; |
308340aa JS |
1826 | struct align_fd afd; |
1827 | ||
1828 | init_afd(&afd, fd); | |
34163fc7 | 1829 | |
3da92f27 | 1830 | locate_bitmap1(st, fd); |
34163fc7 | 1831 | |
d669228f JS |
1832 | if (posix_memalign(&buf, 4096, 4096)) |
1833 | return -ENOMEM; | |
1834 | ||
6416d527 | 1835 | memset(buf, 0xff, 4096); |
b2bfdfa0 | 1836 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); |
6416d527 | 1837 | |
1bf4e2d9 NB |
1838 | towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9); |
1839 | towrite = (towrite+7) >> 3; /* bits to bytes */ | |
6416d527 NB |
1840 | towrite += sizeof(bitmap_super_t); |
1841 | towrite = ROUND_UP(towrite, 512); | |
34163fc7 NB |
1842 | while (towrite > 0) { |
1843 | n = towrite; | |
6416d527 NB |
1844 | if (n > 4096) |
1845 | n = 4096; | |
308340aa | 1846 | n = awrite(&afd, buf, n); |
34163fc7 NB |
1847 | if (n > 0) |
1848 | towrite -= n; | |
1849 | else | |
1850 | break; | |
6416d527 | 1851 | memset(buf, 0xff, 4096); |
34163fc7 NB |
1852 | } |
1853 | fsync(fd); | |
1854 | if (towrite) | |
1855 | rv = -2; | |
1856 | ||
d669228f | 1857 | free(buf); |
34163fc7 | 1858 | return rv; |
82d9eba6 NB |
1859 | } |
1860 | ||
3da92f27 | 1861 | static void free_super1(struct supertype *st) |
df37ffc0 | 1862 | { |
3da92f27 NB |
1863 | if (st->sb) |
1864 | free(st->sb); | |
1cc7f4fe N |
1865 | while (st->info) { |
1866 | struct devinfo *di = st->info; | |
1867 | st->info = di->next; | |
1868 | if (di->fd >= 0) | |
1869 | close(di->fd); | |
1870 | free(di); | |
1871 | } | |
3da92f27 | 1872 | st->sb = NULL; |
df37ffc0 NB |
1873 | } |
1874 | ||
0e600426 | 1875 | #ifndef MDASSEMBLE |
17f25ca6 NB |
1876 | static int validate_geometry1(struct supertype *st, int level, |
1877 | int layout, int raiddisks, | |
c21e737b | 1878 | int *chunk, unsigned long long size, |
2c514b71 NB |
1879 | char *subdev, unsigned long long *freesize, |
1880 | int verbose) | |
17f25ca6 NB |
1881 | { |
1882 | unsigned long long ldsize; | |
1883 | int fd; | |
1884 | ||
b42f577a N |
1885 | if (level == LEVEL_CONTAINER) { |
1886 | if (verbose) | |
e7b84f9d | 1887 | pr_err("1.x metadata does not support containers\n"); |
17f25ca6 | 1888 | return 0; |
b42f577a | 1889 | } |
bb7295f1 N |
1890 | if (chunk && *chunk == UnSet) |
1891 | *chunk = DEFAULT_CHUNK; | |
1892 | ||
17f25ca6 NB |
1893 | if (!subdev) |
1894 | return 1; | |
1895 | ||
1896 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
1897 | if (fd < 0) { | |
2c514b71 | 1898 | if (verbose) |
e7b84f9d | 1899 | pr_err("super1.x cannot open %s: %s\n", |
2c514b71 | 1900 | subdev, strerror(errno)); |
17f25ca6 NB |
1901 | return 0; |
1902 | } | |
2c514b71 | 1903 | |
17f25ca6 NB |
1904 | if (!get_dev_size(fd, subdev, &ldsize)) { |
1905 | close(fd); | |
1906 | return 0; | |
1907 | } | |
1908 | close(fd); | |
1909 | ||
1910 | *freesize = avail_size1(st, ldsize >> 9); | |
1911 | return 1; | |
1912 | } | |
0e600426 | 1913 | #endif /* MDASSEMBLE */ |
17f25ca6 | 1914 | |
82d9eba6 | 1915 | struct superswitch super1 = { |
c7654afc | 1916 | #ifndef MDASSEMBLE |
82d9eba6 NB |
1917 | .examine_super = examine_super1, |
1918 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 1919 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
1920 | .detail_super = detail_super1, |
1921 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 1922 | .export_detail_super = export_detail_super1, |
111d01fc | 1923 | .write_init_super = write_init_super1, |
0e600426 N |
1924 | .validate_geometry = validate_geometry1, |
1925 | .add_to_super = add_to_super1, | |
c7654afc | 1926 | #endif |
83b6208e | 1927 | .match_home = match_home1, |
82d9eba6 NB |
1928 | .uuid_from_super = uuid_from_super1, |
1929 | .getinfo_super = getinfo_super1, | |
00bbdbda | 1930 | .container_content = container_content1, |
82d9eba6 | 1931 | .update_super = update_super1, |
82d9eba6 | 1932 | .init_super = init_super1, |
82d9eba6 | 1933 | .store_super = store_super1, |
82d9eba6 NB |
1934 | .compare_super = compare_super1, |
1935 | .load_super = load_super1, | |
1936 | .match_metadata_desc = match_metadata_desc1, | |
1937 | .avail_size = avail_size1, | |
34163fc7 NB |
1938 | .add_internal_bitmap = add_internal_bitmap1, |
1939 | .locate_bitmap = locate_bitmap1, | |
1940 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 1941 | .free_super = free_super1, |
f277ce36 NB |
1942 | #if __BYTE_ORDER == BIG_ENDIAN |
1943 | .swapuuid = 0, | |
1944 | #else | |
1945 | .swapuuid = 1, | |
1946 | #endif | |
31015d57 | 1947 | .name = "1.x", |
82d9eba6 | 1948 | }; |