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82d9eba6 NB |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
7071320a | 4 | * Copyright (C) 2001-2016 Neil Brown <neilb@suse.com> |
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 | ||
04f903b2 | 25 | #include <stddef.h> |
82d9eba6 | 26 | #include "mdadm.h" |
82d9eba6 NB |
27 | /* |
28 | * The version-1 superblock : | |
29 | * All numeric fields are little-endian. | |
30 | * | |
31 | * total size: 256 bytes plus 2 per device. | |
32 | * 1K allows 384 devices. | |
33 | */ | |
34 | struct mdp_superblock_1 { | |
35 | /* constant array information - 128 bytes */ | |
36 | __u32 magic; /* MD_SB_MAGIC: 0xa92b4efc - little endian */ | |
37 | __u32 major_version; /* 1 */ | |
38 | __u32 feature_map; /* 0 for now */ | |
39 | __u32 pad0; /* always set to 0 when writing */ | |
40 | ||
41 | __u8 set_uuid[16]; /* user-space generated. */ | |
42 | char set_name[32]; /* set and interpreted by user-space */ | |
43 | ||
44 | __u64 ctime; /* lo 40 bits are seconds, top 24 are microseconds or 0*/ | |
45 | __u32 level; /* -4 (multipath), -1 (linear), 0,1,4,5 */ | |
329dfc28 | 46 | __u32 layout; /* used for raid5, raid6, raid10, and raid0 */ |
82d9eba6 NB |
47 | __u64 size; /* used size of component devices, in 512byte sectors */ |
48 | ||
49 | __u32 chunksize; /* in 512byte sectors */ | |
50 | __u32 raid_disks; | |
e97a7cd0 AP |
51 | union { |
52 | __u32 bitmap_offset; /* sectors after start of superblock that bitmap starts | |
53 | * NOTE: signed, so bitmap can be before superblock | |
54 | * only meaningful of feature_map[0] is set. | |
55 | */ | |
56 | ||
57 | /* only meaningful when feature_map[MD_FEATURE_PPL] is set */ | |
58 | struct { | |
59 | __s16 offset; /* sectors from start of superblock that ppl starts */ | |
60 | __u16 size; /* ppl size in sectors */ | |
61 | } ppl; | |
62 | }; | |
b674b5b8 NB |
63 | |
64 | /* These are only valid with feature bit '4' */ | |
b674b5b8 | 65 | __u32 new_level; /* new level we are reshaping to */ |
ac957baa | 66 | __u64 reshape_position; /* next address in array-space for reshape */ |
b674b5b8 NB |
67 | __u32 delta_disks; /* change in number of raid_disks */ |
68 | __u32 new_layout; /* new layout */ | |
a2836f12 | 69 | __u32 new_chunk; /* new chunk size (sectors) */ |
8fe1c44f N |
70 | __u32 new_offset; /* signed number to add to data_offset in new |
71 | * layout. 0 == no-change. This can be | |
72 | * different on each device in the array. | |
73 | */ | |
82d9eba6 NB |
74 | |
75 | /* constant this-device information - 64 bytes */ | |
76 | __u64 data_offset; /* sector start of data, often 0 */ | |
77 | __u64 data_size; /* sectors in this device that can be used for data */ | |
78 | __u64 super_offset; /* sector start of this superblock */ | |
cc1799c3 SL |
79 | union { |
80 | __u64 recovery_offset;/* sectors before this offset (from data_offset) have been recovered */ | |
81 | __u64 journal_tail;/* journal tail of journal device (from data_offset) */ | |
82 | }; | |
82d9eba6 NB |
83 | __u32 dev_number; /* permanent identifier of this device - not role in raid */ |
84 | __u32 cnt_corrected_read; /* number of read errors that were corrected by re-writing */ | |
85 | __u8 device_uuid[16]; /* user-space setable, ignored by kernel */ | |
5d500228 | 86 | __u8 devflags; /* per-device flags. Only one defined...*/ |
dfd4d8ee | 87 | #define WriteMostly1 1 /* mask for writemostly flag in above */ |
71574efb | 88 | #define FailFast1 2 /* Device should get FailFast requests */ |
bf95d0f3 N |
89 | /* bad block log. If there are any bad blocks the feature flag is set. |
90 | * if offset and size are non-zero, that space is reserved and available. | |
91 | */ | |
5c1dec3e ZL |
92 | __u8 bblog_shift; /* shift from sectors to block size for badblock list */ |
93 | __u16 bblog_size; /* number of sectors reserved for badblock list */ | |
bf95d0f3 | 94 | __u32 bblog_offset; /* sector offset from superblock to bblog, signed */ |
82d9eba6 NB |
95 | |
96 | /* array state information - 64 bytes */ | |
5c1dec3e | 97 | __u64 utime; /* 40 bits second, 24 bits microseconds */ |
82d9eba6 NB |
98 | __u64 events; /* incremented when superblock updated */ |
99 | __u64 resync_offset; /* data before this offset (from data_offset) known to be in sync */ | |
4180aa4d N |
100 | __u32 sb_csum; /* checksum upto dev_roles[max_dev] */ |
101 | __u32 max_dev; /* size of dev_roles[] array to consider */ | |
82d9eba6 NB |
102 | __u8 pad3[64-32]; /* set to 0 when writing */ |
103 | ||
104 | /* device state information. Indexed by dev_number. | |
105 | * 2 bytes per device | |
106 | * Note there are no per-device state flags. State information is rolled | |
107 | * into the 'roles' value. If a device is spare or faulty, then it doesn't | |
108 | * have a meaningful role. | |
109 | */ | |
110 | __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ | |
111 | }; | |
112 | ||
911cead7 N |
113 | #define MAX_SB_SIZE 4096 |
114 | /* bitmap super size is 256, but we round up to a sector for alignment */ | |
115 | #define BM_SUPER_SIZE 512 | |
116 | #define MAX_DEVS ((int)(MAX_SB_SIZE - sizeof(struct mdp_superblock_1)) / 2) | |
41226756 JS |
117 | #define SUPER1_SIZE (MAX_SB_SIZE + BM_SUPER_SIZE \ |
118 | + sizeof(struct misc_dev_info)) | |
911cead7 | 119 | |
bee8ec56 NB |
120 | struct misc_dev_info { |
121 | __u64 device_size; | |
122 | }; | |
123 | ||
fa601c2e PB |
124 | #define MULTIPLE_PPL_AREA_SIZE_SUPER1 (1024 * 1024) /* Size of the whole |
125 | * mutliple PPL area | |
126 | */ | |
d2cd3ffc NB |
127 | /* feature_map bits */ |
128 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
129 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
130 | * must be honoured | |
131 | */ | |
b674b5b8 | 132 | #define MD_FEATURE_RESHAPE_ACTIVE 4 |
bf95d0f3 | 133 | #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */ |
8fe1c44f N |
134 | #define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an |
135 | * active device with same 'role'. | |
136 | * 'recovery_offset' is also set. | |
137 | */ | |
138 | #define MD_FEATURE_RESHAPE_BACKWARDS 32 /* Reshape doesn't change number | |
139 | * of devices, but is going | |
140 | * backwards anyway. | |
141 | */ | |
142 | #define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */ | |
6d9c7c25 | 143 | #define MD_FEATURE_BITMAP_VERSIONED 256 /* bitmap version number checked properly */ |
ed94976d | 144 | #define MD_FEATURE_JOURNAL 512 /* support write journal */ |
e97a7cd0 | 145 | #define MD_FEATURE_PPL 1024 /* support PPL */ |
fa601c2e | 146 | #define MD_FEATURE_MUTLIPLE_PPLS 2048 /* support for multiple PPLs */ |
329dfc28 | 147 | #define MD_FEATURE_RAID0_LAYOUT 4096 /* layout is meaningful in RAID0 */ |
8fe1c44f N |
148 | #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \ |
149 | |MD_FEATURE_RECOVERY_OFFSET \ | |
150 | |MD_FEATURE_RESHAPE_ACTIVE \ | |
151 | |MD_FEATURE_BAD_BLOCKS \ | |
152 | |MD_FEATURE_REPLACEMENT \ | |
153 | |MD_FEATURE_RESHAPE_BACKWARDS \ | |
154 | |MD_FEATURE_NEW_OFFSET \ | |
6d9c7c25 | 155 | |MD_FEATURE_BITMAP_VERSIONED \ |
ed94976d | 156 | |MD_FEATURE_JOURNAL \ |
e97a7cd0 | 157 | |MD_FEATURE_PPL \ |
fa601c2e | 158 | |MD_FEATURE_MULTIPLE_PPLS \ |
329dfc28 | 159 | |MD_FEATURE_RAID0_LAYOUT \ |
8fe1c44f | 160 | ) |
69a48116 SL |
161 | |
162 | static int role_from_sb(struct mdp_superblock_1 *sb) | |
163 | { | |
164 | unsigned int d; | |
165 | int role; | |
166 | ||
167 | d = __le32_to_cpu(sb->dev_number); | |
168 | if (d < __le32_to_cpu(sb->max_dev)) | |
169 | role = __le16_to_cpu(sb->dev_roles[d]); | |
170 | else | |
171 | role = MD_DISK_ROLE_SPARE; | |
172 | return role; | |
173 | } | |
d2cd3ffc | 174 | |
7e6e839a GJ |
175 | /* return how many bytes are needed for bitmap, for cluster-md each node |
176 | * should have it's own bitmap */ | |
177 | static unsigned int calc_bitmap_size(bitmap_super_t *bms, unsigned int boundary) | |
178 | { | |
179 | unsigned long long bits, bytes; | |
180 | ||
561ad559 AP |
181 | bits = bitmap_bits(__le64_to_cpu(bms->sync_size), |
182 | __le32_to_cpu(bms->chunksize)); | |
7e6e839a GJ |
183 | bytes = (bits+7) >> 3; |
184 | bytes += sizeof(bitmap_super_t); | |
185 | bytes = ROUND_UP(bytes, boundary); | |
186 | ||
187 | return bytes; | |
188 | } | |
189 | ||
82d9eba6 NB |
190 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
191 | { | |
192 | unsigned int disk_csum, csum; | |
193 | unsigned long long newcsum; | |
194 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
195 | unsigned int *isuper = (unsigned int*)sb; | |
82d9eba6 NB |
196 | |
197 | /* make sure I can count... */ | |
198 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
199 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
200 | sizeof(struct mdp_superblock_1) != 256) { | |
201 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
202 | } | |
203 | ||
204 | disk_csum = sb->sb_csum; | |
205 | sb->sb_csum = 0; | |
206 | newcsum = 0; | |
e4c72d1d | 207 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
208 | newcsum += __le32_to_cpu(*isuper); |
209 | isuper++; | |
210 | } | |
82d9eba6 NB |
211 | |
212 | if (size == 2) | |
213 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
214 | ||
215 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
216 | sb->sb_csum = disk_csum; | |
83205b64 | 217 | return __cpu_to_le32(csum); |
82d9eba6 NB |
218 | } |
219 | ||
308340aa JS |
220 | /* |
221 | * Information related to file descriptor used for aligned reads/writes. | |
222 | * Cache the block size. | |
223 | */ | |
224 | struct align_fd { | |
225 | int fd; | |
226 | int blk_sz; | |
227 | }; | |
228 | ||
229 | static void init_afd(struct align_fd *afd, int fd) | |
230 | { | |
231 | afd->fd = fd; | |
32971509 | 232 | if (!get_dev_sector_size(afd->fd, NULL, (unsigned int *)&afd->blk_sz)) |
308340aa JS |
233 | afd->blk_sz = 512; |
234 | } | |
235 | ||
5ea022a1 | 236 | static char abuf[4096+4096]; |
46a533a9 | 237 | |
308340aa | 238 | static int aread(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
239 | { |
240 | /* aligned read. | |
241 | * On devices with a 4K sector size, we need to read | |
242 | * the full sector and copy relevant bits into | |
243 | * the buffer | |
244 | */ | |
6ef89052 | 245 | int bsize, iosize; |
5ea022a1 N |
246 | char *b; |
247 | int n; | |
6ef89052 | 248 | |
308340aa JS |
249 | bsize = afd->blk_sz; |
250 | ||
251 | if (!bsize || bsize > 4096 || len > 4096) { | |
252 | if (!bsize) | |
7a862a02 | 253 | fprintf(stderr, "WARNING - aread() called with invalid block size\n"); |
5ea022a1 | 254 | return -1; |
308340aa | 255 | } |
0a2f1894 | 256 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 257 | |
6ef89052 N |
258 | for (iosize = 0; iosize < len; iosize += bsize) |
259 | ; | |
308340aa | 260 | n = read(afd->fd, b, iosize); |
5ea022a1 N |
261 | if (n <= 0) |
262 | return n; | |
308340aa | 263 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
264 | if (n > len) |
265 | n = len; | |
266 | memcpy(buf, b, n); | |
267 | return n; | |
268 | } | |
269 | ||
308340aa | 270 | static int awrite(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
271 | { |
272 | /* aligned write. | |
273 | * On devices with a 4K sector size, we need to write | |
274 | * the full sector. We pre-read if the sector is larger | |
275 | * than the write. | |
276 | * The address must be sector-aligned. | |
277 | */ | |
6ef89052 | 278 | int bsize, iosize; |
5ea022a1 N |
279 | char *b; |
280 | int n; | |
308340aa JS |
281 | |
282 | bsize = afd->blk_sz; | |
283 | if (!bsize || bsize > 4096 || len > 4096) { | |
284 | if (!bsize) | |
7a862a02 | 285 | fprintf(stderr, "WARNING - awrite() called with invalid block size\n"); |
5ea022a1 | 286 | return -1; |
308340aa | 287 | } |
0a2f1894 | 288 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 289 | |
6ef89052 N |
290 | for (iosize = 0; iosize < len ; iosize += bsize) |
291 | ; | |
292 | ||
293 | if (len != iosize) { | |
308340aa | 294 | n = read(afd->fd, b, iosize); |
6ef89052 N |
295 | if (n <= 0) |
296 | return n; | |
308340aa | 297 | lseek(afd->fd, -n, 1); |
6ef89052 N |
298 | } |
299 | ||
5ea022a1 | 300 | memcpy(b, buf, len); |
308340aa | 301 | n = write(afd->fd, b, iosize); |
5ea022a1 N |
302 | if (n <= 0) |
303 | return n; | |
308340aa | 304 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
305 | return len; |
306 | } | |
307 | ||
fa601c2e PB |
308 | static inline unsigned int md_feature_any_ppl_on(__u32 feature_map) |
309 | { | |
310 | return ((__cpu_to_le32(feature_map) & | |
311 | (MD_FEATURE_PPL | MD_FEATURE_MUTLIPLE_PPLS))); | |
312 | } | |
313 | ||
e97a7cd0 AP |
314 | static inline unsigned int choose_ppl_space(int chunk) |
315 | { | |
316 | return (PPL_HEADER_SIZE >> 9) + (chunk > 128*2 ? chunk : 128*2); | |
317 | } | |
318 | ||
3da92f27 | 319 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 320 | { |
3da92f27 | 321 | struct mdp_superblock_1 *sb = st->sb; |
0aa2f15b | 322 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
82d9eba6 | 323 | time_t atime; |
f21e18ca | 324 | unsigned int d; |
e8e1c176 | 325 | int role; |
4180aa4d | 326 | int delta_extra = 0; |
82d9eba6 NB |
327 | int i; |
328 | char *c; | |
a1cbd7d0 | 329 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 330 | int layout; |
a17a3de3 | 331 | unsigned long long sb_offset; |
5e1863d4 | 332 | struct mdinfo info; |
82d9eba6 NB |
333 | |
334 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
335 | printf(" Version : 1"); |
336 | sb_offset = __le64_to_cpu(sb->super_offset); | |
337 | if (sb_offset <= 4) | |
338 | printf(".1\n"); | |
339 | else if (sb_offset <= 8) | |
340 | printf(".2\n"); | |
341 | else | |
342 | printf(".0\n"); | |
91eedefc | 343 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
344 | printf(" Array UUID : "); |
345 | for (i=0; i<16; i++) { | |
82d9eba6 | 346 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 347 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
348 | } |
349 | printf("\n"); | |
a1cbd7d0 NB |
350 | printf(" Name : %.32s", sb->set_name); |
351 | if (l > 0 && l < 32 && | |
352 | sb->set_name[l] == ':' && | |
353 | strncmp(sb->set_name, homehost, l) == 0) | |
354 | printf(" (local to host %s)", homehost); | |
355 | printf("\n"); | |
46a533a9 JS |
356 | if (bms->nodes > 0 && |
357 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) | |
2cf42394 | 358 | printf(" Cluster Name : %-64s\n", bms->cluster_name); |
82d9eba6 NB |
359 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
360 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
361 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
362 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
363 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
364 | printf("\n"); | |
227aeaa8 | 365 | printf(" Avail Dev Size : %llu sectors%s\n", |
2fb749d1 NB |
366 | (unsigned long long)__le64_to_cpu(sb->data_size), |
367 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 368 | if (__le32_to_cpu(sb->level) > 0) { |
d4633e06 | 369 | int ddsks = 0, ddsks_denom = 1; |
b674b5b8 NB |
370 | switch(__le32_to_cpu(sb->level)) { |
371 | case 1: ddsks=1;break; | |
372 | case 4: | |
83205b64 NB |
373 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
374 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
375 | case 10: | |
376 | layout = __le32_to_cpu(sb->layout); | |
d4633e06 N |
377 | ddsks = __le32_to_cpu(sb->raid_disks); |
378 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
b674b5b8 | 379 | } |
d4633e06 N |
380 | if (ddsks) { |
381 | long long asize = __le64_to_cpu(sb->size); | |
382 | asize = (asize << 9) * ddsks / ddsks_denom; | |
227aeaa8 | 383 | printf(" Array Size : %llu KiB%s\n", |
d4633e06 N |
384 | asize >> 10, human_size(asize)); |
385 | } | |
b674b5b8 | 386 | if (sb->size != sb->data_size) |
227aeaa8 | 387 | printf(" Used Dev Size : %llu sectors%s\n", |
83205b64 NB |
388 | (unsigned long long)__le64_to_cpu(sb->size), |
389 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 390 | } |
82d9eba6 | 391 | if (sb->data_offset) |
199171a2 NB |
392 | printf(" Data Offset : %llu sectors\n", |
393 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
8772113a N |
394 | if (sb->new_offset && |
395 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) { | |
8fe1c44f N |
396 | unsigned long long offset = __le64_to_cpu(sb->data_offset); |
397 | offset += (signed)(int32_t)__le32_to_cpu(sb->new_offset); | |
398 | printf(" New Offset : %llu sectors\n", offset); | |
399 | } | |
199171a2 NB |
400 | printf(" Super Offset : %llu sectors\n", |
401 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc | 402 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
46a533a9 JS |
403 | printf("Recovery Offset : %llu sectors\n", |
404 | (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
5e1863d4 N |
405 | |
406 | st->ss->getinfo_super(st, &info, NULL); | |
407 | if (info.space_after != 1 && | |
408 | !(__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) | |
409 | printf(" Unused Space : before=%llu sectors, after=%llu sectors\n", | |
410 | info.space_before, info.space_after); | |
411 | ||
46a533a9 JS |
412 | printf(" State : %s\n", |
413 | (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); | |
82d9eba6 NB |
414 | printf(" Device UUID : "); |
415 | for (i=0; i<16; i++) { | |
46a533a9 JS |
416 | if ((i&3)==0 && i != 0) |
417 | printf(":"); | |
34163fc7 | 418 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
419 | } |
420 | printf("\n"); | |
b674b5b8 | 421 | printf("\n"); |
91eedefc NB |
422 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
423 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 424 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
fa601c2e | 425 | } else if (md_feature_any_ppl_on(sb->feature_map)) { |
e97a7cd0 AP |
426 | printf(" PPL : %u sectors at offset %d sectors from superblock\n", |
427 | __le16_to_cpu(sb->ppl.size), | |
428 | __le16_to_cpu(sb->ppl.offset)); | |
8fac0577 | 429 | } |
bf95d0f3 | 430 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)) { |
46a533a9 JS |
431 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long) |
432 | __le64_to_cpu(sb->reshape_position)/2, | |
b674b5b8 NB |
433 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
434 | if (__le32_to_cpu(sb->delta_disks)) { | |
46a533a9 JS |
435 | printf(" Delta Devices : %d", |
436 | __le32_to_cpu(sb->delta_disks)); | |
4180aa4d | 437 | printf(" (%d->%d)\n", |
46a533a9 JS |
438 | __le32_to_cpu(sb->raid_disks) - |
439 | __le32_to_cpu(sb->delta_disks), | |
4180aa4d N |
440 | __le32_to_cpu(sb->raid_disks)); |
441 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
442 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
443 | } |
444 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
445 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
446 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
447 | } | |
46a533a9 JS |
448 | if (__le32_to_cpu(sb->new_layout) != |
449 | __le32_to_cpu(sb->layout)) { | |
b674b5b8 | 450 | if (__le32_to_cpu(sb->level) == 5) { |
46a533a9 JS |
451 | c = map_num(r5layout, |
452 | __le32_to_cpu(sb->new_layout)); | |
b674b5b8 NB |
453 | printf(" New Layout : %s\n", c?c:"-unknown-"); |
454 | } | |
fe77a154 | 455 | if (__le32_to_cpu(sb->level) == 6) { |
46a533a9 JS |
456 | c = map_num(r6layout, |
457 | __le32_to_cpu(sb->new_layout)); | |
fe77a154 N |
458 | printf(" New Layout : %s\n", c?c:"-unknown-"); |
459 | } | |
b674b5b8 | 460 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
461 | printf(" New Layout :"); |
462 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
463 | printf("\n"); | |
b674b5b8 NB |
464 | } |
465 | } | |
46a533a9 JS |
466 | if (__le32_to_cpu(sb->new_chunk) != |
467 | __le32_to_cpu(sb->chunksize)) | |
468 | printf(" New Chunksize : %dK\n", | |
469 | __le32_to_cpu(sb->new_chunk)/2); | |
b674b5b8 NB |
470 | printf("\n"); |
471 | } | |
dfd4d8ee | 472 | if (sb->devflags) { |
62184891 | 473 | printf(" Flags :"); |
34163fc7 | 474 | if (sb->devflags & WriteMostly1) |
dfd4d8ee | 475 | printf(" write-mostly"); |
71574efb N |
476 | if (sb->devflags & FailFast1) |
477 | printf(" failfast"); | |
dfd4d8ee NB |
478 | printf("\n"); |
479 | } | |
82d9eba6 NB |
480 | |
481 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
482 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
483 | ||
bf95d0f3 N |
484 | if (sb->bblog_size && sb->bblog_offset) { |
485 | printf(" Bad Block Log : %d entries available at offset %ld sectors", | |
486 | __le16_to_cpu(sb->bblog_size)*512/8, | |
d6e4b44f | 487 | (long)(int32_t)__le32_to_cpu(sb->bblog_offset)); |
46a533a9 | 488 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) |
bf95d0f3 N |
489 | printf(" - bad blocks present."); |
490 | printf("\n"); | |
491 | } | |
492 | ||
82d9eba6 | 493 | if (calc_sb_1_csum(sb) == sb->sb_csum) |
46a533a9 JS |
494 | printf(" Checksum : %x - correct\n", |
495 | __le32_to_cpu(sb->sb_csum)); | |
82d9eba6 | 496 | else |
46a533a9 JS |
497 | printf(" Checksum : %x - expected %x\n", |
498 | __le32_to_cpu(sb->sb_csum), | |
82d9eba6 | 499 | __le32_to_cpu(calc_sb_1_csum(sb))); |
46a533a9 JS |
500 | printf(" Events : %llu\n", |
501 | (unsigned long long)__le64_to_cpu(sb->events)); | |
82d9eba6 | 502 | printf("\n"); |
329dfc28 N |
503 | if (__le32_to_cpu(sb->level) == 0 && |
504 | (sb->feature_map & __cpu_to_le32(MD_FEATURE_RAID0_LAYOUT))) { | |
505 | c = map_num(r0layout, __le32_to_cpu(sb->layout)); | |
506 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
507 | } | |
82d9eba6 NB |
508 | if (__le32_to_cpu(sb->level) == 5) { |
509 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
510 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
511 | } | |
fe77a154 N |
512 | if (__le32_to_cpu(sb->level) == 6) { |
513 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
514 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
515 | } | |
265e0f17 NB |
516 | if (__le32_to_cpu(sb->level) == 10) { |
517 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
518 | printf(" Layout :"); |
519 | print_r10_layout(lo); | |
520 | printf("\n"); | |
265e0f17 | 521 | } |
82d9eba6 NB |
522 | switch(__le32_to_cpu(sb->level)) { |
523 | case 0: | |
524 | case 4: | |
525 | case 5: | |
d2cd3ffc NB |
526 | case 6: |
527 | case 10: | |
46a533a9 JS |
528 | printf(" Chunk Size : %dK\n", |
529 | __le32_to_cpu(sb->chunksize)/2); | |
82d9eba6 NB |
530 | break; |
531 | case -1: | |
46a533a9 JS |
532 | printf(" Rounding : %dK\n", |
533 | __le32_to_cpu(sb->chunksize)/2); | |
534 | break; | |
535 | default: | |
82d9eba6 | 536 | break; |
82d9eba6 NB |
537 | } |
538 | printf("\n"); | |
e8e1c176 N |
539 | #if 0 |
540 | /* This turns out to just be confusing */ | |
c3684618 | 541 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
46a533a9 | 542 | for (i = __le32_to_cpu(sb->max_dev); i> 0 ; i--) |
fa7574f6 | 543 | if (__le16_to_cpu(sb->dev_roles[i-1]) != MD_DISK_ROLE_SPARE) |
c3684618 | 544 | break; |
46a533a9 | 545 | for (d = 0; d < i; d++) { |
c3684618 | 546 | int role = __le16_to_cpu(sb->dev_roles[d]); |
46a533a9 JS |
547 | if (d) |
548 | printf(", "); | |
549 | if (role == MD_DISK_ROLE_SPARE) | |
550 | printf("empty"); | |
551 | else | |
552 | if(role == MD_DISK_ROLE_FAULTY) | |
553 | printf("failed"); | |
554 | else | |
555 | printf("%d", role); | |
c3684618 NB |
556 | } |
557 | printf(")\n"); | |
e8e1c176 N |
558 | #endif |
559 | printf(" Device Role : "); | |
69a48116 | 560 | role = role_from_sb(sb); |
fa7574f6 | 561 | if (role >= MD_DISK_ROLE_FAULTY) |
e8e1c176 | 562 | printf("spare\n"); |
ed94976d SL |
563 | else if (role == MD_DISK_ROLE_JOURNAL) |
564 | printf("Journal\n"); | |
24c7bc84 N |
565 | else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_REPLACEMENT)) |
566 | printf("Replacement device %d\n", role); | |
e8e1c176 N |
567 | else |
568 | printf("Active device %d\n", role); | |
569 | ||
82d9eba6 | 570 | printf(" Array State : "); |
46a533a9 | 571 | for (d = 0; d < __le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 572 | int cnt = 0; |
f21e18ca | 573 | unsigned int i; |
46a533a9 | 574 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 575 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 576 | if (role == d) |
82d9eba6 | 577 | cnt++; |
82d9eba6 | 578 | } |
24c7bc84 N |
579 | if (cnt == 2) |
580 | printf("R"); | |
581 | else if (cnt == 1) | |
582 | printf("A"); | |
583 | else if (cnt == 0) | |
584 | printf("."); | |
585 | else | |
586 | printf("?"); | |
82d9eba6 | 587 | } |
e8e1c176 N |
588 | #if 0 |
589 | /* This is confusing too */ | |
6fbba4c9 | 590 | faulty = 0; |
46a533a9 | 591 | for (i = 0; i< __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 592 | int role = __le16_to_cpu(sb->dev_roles[i]); |
fa7574f6 | 593 | if (role == MD_DISK_ROLE_FAULTY) |
6fbba4c9 | 594 | faulty++; |
82d9eba6 | 595 | } |
46a533a9 JS |
596 | if (faulty) |
597 | printf(" %d failed", faulty); | |
e8e1c176 | 598 | #endif |
24c7bc84 | 599 | printf(" ('A' == active, '.' == missing, 'R' == replacing)"); |
82d9eba6 NB |
600 | printf("\n"); |
601 | } | |
602 | ||
061f2c6a | 603 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 604 | { |
3da92f27 | 605 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 606 | int i; |
a17a3de3 | 607 | unsigned long long sb_offset; |
2998bc01 | 608 | char *nm; |
46a533a9 | 609 | char *c = map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
610 | |
611 | nm = strchr(sb->set_name, ':'); | |
612 | if (nm) | |
613 | nm++; | |
614 | else if (sb->set_name[0]) | |
615 | nm = sb->set_name; | |
616 | else | |
cf8de691 | 617 | nm = NULL; |
82d9eba6 | 618 | |
7103b9b8 N |
619 | printf("ARRAY "); |
620 | if (nm) { | |
621 | printf("/dev/md/"); | |
622 | print_escape(nm); | |
623 | putchar(' '); | |
624 | } | |
061f2c6a N |
625 | if (verbose && c) |
626 | printf(" level=%s", c); | |
a17a3de3 DL |
627 | sb_offset = __le64_to_cpu(sb->super_offset); |
628 | if (sb_offset <= 4) | |
e9a0e728 | 629 | printf(" metadata=1.1 "); |
a17a3de3 | 630 | else if (sb_offset <= 8) |
e9a0e728 | 631 | printf(" metadata=1.2 "); |
a17a3de3 | 632 | else |
e9a0e728 | 633 | printf(" metadata=1.0 "); |
061f2c6a N |
634 | if (verbose) |
635 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
636 | printf("UUID="); | |
46a533a9 JS |
637 | for (i = 0; i < 16; i++) { |
638 | if ((i&3)==0 && i != 0) | |
639 | printf(":"); | |
b7a708af | 640 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 641 | } |
7103b9b8 N |
642 | if (sb->set_name[0]) { |
643 | printf(" name="); | |
644 | print_quoted(sb->set_name); | |
645 | } | |
82d9eba6 NB |
646 | printf("\n"); |
647 | } | |
648 | ||
0d726f17 KS |
649 | static void export_examine_super1(struct supertype *st) |
650 | { | |
651 | struct mdp_superblock_1 *sb = st->sb; | |
652 | int i; | |
653 | int len = 32; | |
80730bae | 654 | int layout; |
0d726f17 KS |
655 | |
656 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
657 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
46a533a9 JS |
658 | for (i = 0; i < 32; i++) |
659 | if (sb->set_name[i] == '\n' || sb->set_name[i] == '\0') { | |
0d726f17 KS |
660 | len = i; |
661 | break; | |
662 | } | |
663 | if (len) | |
664 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
80730bae MN |
665 | if (__le32_to_cpu(sb->level) > 0) { |
666 | int ddsks = 0, ddsks_denom = 1; | |
667 | switch(__le32_to_cpu(sb->level)) { | |
46a533a9 JS |
668 | case 1: |
669 | ddsks = 1; | |
670 | break; | |
80730bae | 671 | case 4: |
46a533a9 JS |
672 | case 5: |
673 | ddsks = __le32_to_cpu(sb->raid_disks)-1; | |
674 | break; | |
675 | case 6: | |
676 | ddsks = __le32_to_cpu(sb->raid_disks)-2; | |
677 | break; | |
80730bae MN |
678 | case 10: |
679 | layout = __le32_to_cpu(sb->layout); | |
680 | ddsks = __le32_to_cpu(sb->raid_disks); | |
681 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
682 | } | |
683 | if (ddsks) { | |
684 | long long asize = __le64_to_cpu(sb->size); | |
685 | asize = (asize << 9) * ddsks / ddsks_denom; | |
46a533a9 JS |
686 | printf("MD_ARRAY_SIZE=%s\n", |
687 | human_size_brief(asize, JEDEC)); | |
80730bae MN |
688 | } |
689 | } | |
0d726f17 | 690 | printf("MD_UUID="); |
46a533a9 JS |
691 | for (i = 0; i < 16; i++) { |
692 | if ((i&3) == 0 && i != 0) | |
693 | printf(":"); | |
0d726f17 KS |
694 | printf("%02x", sb->set_uuid[i]); |
695 | } | |
696 | printf("\n"); | |
697 | printf("MD_UPDATE_TIME=%llu\n", | |
698 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
699 | printf("MD_DEV_UUID="); | |
46a533a9 JS |
700 | for (i = 0; i < 16; i++) { |
701 | if ((i&3) == 0 && i != 0) | |
702 | printf(":"); | |
0d726f17 KS |
703 | printf("%02x", sb->device_uuid[i]); |
704 | } | |
705 | printf("\n"); | |
706 | printf("MD_EVENTS=%llu\n", | |
707 | (unsigned long long)__le64_to_cpu(sb->events)); | |
708 | } | |
709 | ||
74db60b0 N |
710 | static int copy_metadata1(struct supertype *st, int from, int to) |
711 | { | |
712 | /* Read superblock. If it looks good, write it out. | |
713 | * Then if a bitmap is present, copy that. | |
714 | * And if a bad-block-list is present, copy that too. | |
715 | */ | |
716 | void *buf; | |
717 | unsigned long long dsize, sb_offset; | |
718 | const int bufsize = 4*1024; | |
719 | struct mdp_superblock_1 super, *sb; | |
720 | ||
721 | if (posix_memalign(&buf, 4096, bufsize) != 0) | |
722 | return 1; | |
723 | ||
724 | if (!get_dev_size(from, NULL, &dsize)) | |
725 | goto err; | |
726 | ||
727 | dsize >>= 9; | |
728 | if (dsize < 24) | |
729 | goto err; | |
730 | switch(st->minor_version) { | |
731 | case 0: | |
732 | sb_offset = dsize; | |
733 | sb_offset -= 8*2; | |
734 | sb_offset &= ~(4*2-1); | |
735 | break; | |
736 | case 1: | |
737 | sb_offset = 0; | |
738 | break; | |
739 | case 2: | |
740 | sb_offset = 4*2; | |
741 | break; | |
742 | default: | |
743 | goto err; | |
744 | } | |
745 | ||
746 | if (lseek64(from, sb_offset << 9, 0) < 0LL) | |
747 | goto err; | |
748 | if (read(from, buf, bufsize) != bufsize) | |
749 | goto err; | |
750 | ||
751 | sb = buf; | |
752 | super = *sb; // save most of sb for when we reuse buf | |
753 | ||
754 | if (__le32_to_cpu(super.magic) != MD_SB_MAGIC || | |
755 | __le32_to_cpu(super.major_version) != 1 || | |
756 | __le64_to_cpu(super.super_offset) != sb_offset || | |
757 | calc_sb_1_csum(sb) != super.sb_csum) | |
758 | goto err; | |
759 | ||
760 | if (lseek64(to, sb_offset << 9, 0) < 0LL) | |
761 | goto err; | |
762 | if (write(to, buf, bufsize) != bufsize) | |
763 | goto err; | |
764 | ||
765 | if (super.feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
766 | unsigned long long bitmap_offset = sb_offset; | |
767 | int bytes = 4096; // just an estimate. | |
768 | int written = 0; | |
769 | struct align_fd afrom, ato; | |
770 | ||
771 | init_afd(&afrom, from); | |
772 | init_afd(&ato, to); | |
773 | ||
774 | bitmap_offset += (int32_t)__le32_to_cpu(super.bitmap_offset); | |
775 | ||
776 | if (lseek64(from, bitmap_offset<<9, 0) < 0) | |
777 | goto err; | |
778 | if (lseek64(to, bitmap_offset<<9, 0) < 0) | |
779 | goto err; | |
780 | ||
781 | for (written = 0; written < bytes ; ) { | |
782 | int n = bytes - written; | |
783 | if (n > 4096) | |
784 | n = 4096; | |
785 | if (aread(&afrom, buf, n) != n) | |
786 | goto err; | |
787 | if (written == 0) { | |
788 | /* have the header, can calculate | |
789 | * correct bitmap bytes */ | |
790 | bitmap_super_t *bms; | |
74db60b0 | 791 | bms = (void*)buf; |
4a3d29ed | 792 | bytes = calc_bitmap_size(bms, 512); |
74db60b0 N |
793 | if (n > bytes) |
794 | n = bytes; | |
795 | } | |
796 | if (awrite(&ato, buf, n) != n) | |
797 | goto err; | |
798 | written += n; | |
799 | } | |
800 | } | |
801 | ||
802 | if (super.bblog_size != 0 && | |
27c7c87a | 803 | __le16_to_cpu(super.bblog_size) <= 100 && |
74db60b0 N |
804 | super.bblog_offset != 0 && |
805 | (super.feature_map & __le32_to_cpu(MD_FEATURE_BAD_BLOCKS))) { | |
806 | /* There is a bad block log */ | |
807 | unsigned long long bb_offset = sb_offset; | |
27c7c87a | 808 | int bytes = __le16_to_cpu(super.bblog_size) * 512; |
74db60b0 N |
809 | int written = 0; |
810 | struct align_fd afrom, ato; | |
811 | ||
812 | init_afd(&afrom, from); | |
813 | init_afd(&ato, to); | |
814 | ||
815 | bb_offset += (int32_t)__le32_to_cpu(super.bblog_offset); | |
816 | ||
817 | if (lseek64(from, bb_offset<<9, 0) < 0) | |
818 | goto err; | |
819 | if (lseek64(to, bb_offset<<9, 0) < 0) | |
820 | goto err; | |
821 | ||
822 | for (written = 0; written < bytes ; ) { | |
823 | int n = bytes - written; | |
824 | if (n > 4096) | |
825 | n = 4096; | |
826 | if (aread(&afrom, buf, n) != n) | |
827 | goto err; | |
828 | ||
829 | if (awrite(&ato, buf, n) != n) | |
830 | goto err; | |
831 | written += n; | |
832 | } | |
833 | } | |
834 | ||
835 | free(buf); | |
836 | return 0; | |
837 | ||
838 | err: | |
839 | free(buf); | |
840 | return 1; | |
841 | } | |
842 | ||
b771faef | 843 | static void detail_super1(struct supertype *st, char *homehost, char *subarray) |
82d9eba6 | 844 | { |
3da92f27 | 845 | struct mdp_superblock_1 *sb = st->sb; |
0aa2f15b | 846 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
82d9eba6 | 847 | int i; |
b6750aa8 | 848 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 849 | |
65884368 | 850 | printf(" Name : %.32s", sb->set_name); |
46a533a9 | 851 | if (l > 0 && l < 32 && sb->set_name[l] == ':' && |
b6750aa8 NB |
852 | strncmp(sb->set_name, homehost, l) == 0) |
853 | printf(" (local to host %s)", homehost); | |
46a533a9 JS |
854 | if (bms->nodes > 0 && |
855 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) | |
856 | printf("\n Cluster Name : %-64s", bms->cluster_name); | |
65884368 | 857 | printf("\n UUID : "); |
46a533a9 JS |
858 | for (i = 0; i < 16; i++) { |
859 | if ((i&3) == 0 && i != 0) | |
860 | printf(":"); | |
34163fc7 | 861 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 862 | } |
65884368 AP |
863 | printf("\n Events : %llu\n\n", |
864 | (unsigned long long)__le64_to_cpu(sb->events)); | |
82d9eba6 NB |
865 | } |
866 | ||
b771faef | 867 | static void brief_detail_super1(struct supertype *st, char *subarray) |
82d9eba6 | 868 | { |
3da92f27 | 869 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
870 | int i; |
871 | ||
7103b9b8 N |
872 | if (sb->set_name[0]) { |
873 | printf(" name="); | |
874 | print_quoted(sb->set_name); | |
875 | } | |
82d9eba6 | 876 | printf(" UUID="); |
46a533a9 JS |
877 | for (i = 0; i < 16; i++) { |
878 | if ((i & 3) == 0 && i != 0) | |
879 | printf(":"); | |
34163fc7 | 880 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
881 | } |
882 | } | |
883 | ||
0d726f17 | 884 | static void export_detail_super1(struct supertype *st) |
54bad364 | 885 | { |
3da92f27 | 886 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
887 | int i; |
888 | int len = 32; | |
889 | ||
46a533a9 JS |
890 | for (i = 0; i < 32; i++) |
891 | if (sb->set_name[i] == '\n' || sb->set_name[i] == '\0') { | |
54bad364 KS |
892 | len = i; |
893 | break; | |
894 | } | |
895 | if (len) | |
896 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
897 | } |
898 | ||
6d388a88 N |
899 | static int examine_badblocks_super1(struct supertype *st, int fd, char *devname) |
900 | { | |
901 | struct mdp_superblock_1 *sb = st->sb; | |
902 | unsigned long long offset; | |
903 | int size; | |
904 | __u64 *bbl, *bbp; | |
905 | int i; | |
906 | ||
46a533a9 JS |
907 | if (!sb->bblog_size || __le16_to_cpu(sb->bblog_size) > 100 || |
908 | !sb->bblog_offset){ | |
6d388a88 N |
909 | printf("No bad-blocks list configured on %s\n", devname); |
910 | return 0; | |
911 | } | |
46a533a9 | 912 | if ((sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) == 0) { |
6d388a88 N |
913 | printf("Bad-blocks list is empty in %s\n", devname); |
914 | return 0; | |
915 | } | |
916 | ||
27c7c87a | 917 | size = __le16_to_cpu(sb->bblog_size)* 512; |
0cf83229 | 918 | if (posix_memalign((void**)&bbl, 4096, size) != 0) { |
1ade5cc1 | 919 | pr_err("could not allocate badblocks list\n"); |
0cf83229 N |
920 | return 0; |
921 | } | |
6d388a88 N |
922 | offset = __le64_to_cpu(sb->super_offset) + |
923 | (int)__le32_to_cpu(sb->bblog_offset); | |
924 | offset <<= 9; | |
925 | if (lseek64(fd, offset, 0) < 0) { | |
926 | pr_err("Cannot seek to bad-blocks list\n"); | |
927 | return 1; | |
928 | } | |
929 | if (read(fd, bbl, size) != size) { | |
930 | pr_err("Cannot read bad-blocks list\n"); | |
931 | return 1; | |
932 | } | |
933 | /* 64bits per entry. 10 bits is block-count, 54 bits is block | |
934 | * offset. Blocks are sectors unless bblog->shift makes them bigger | |
935 | */ | |
936 | bbp = (__u64*)bbl; | |
937 | printf("Bad-blocks on %s:\n", devname); | |
938 | for (i = 0; i < size/8; i++, bbp++) { | |
939 | __u64 bb = __le64_to_cpu(*bbp); | |
940 | int count = bb & 0x3ff; | |
941 | unsigned long long sector = bb >> 10; | |
942 | ||
943 | if (bb + 1 == 0) | |
944 | break; | |
945 | ||
946 | sector <<= sb->bblog_shift; | |
947 | count <<= sb->bblog_shift; | |
948 | ||
949 | printf("%20llu for %d sectors\n", sector, count); | |
950 | } | |
951 | return 0; | |
952 | } | |
953 | ||
3da92f27 | 954 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 955 | { |
3da92f27 | 956 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
957 | int l = homehost ? strlen(homehost) : 0; |
958 | ||
46a533a9 | 959 | return (l > 0 && l < 32 && sb->set_name[l] == ':' && |
83b6208e NB |
960 | strncmp(sb->set_name, homehost, l) == 0); |
961 | } | |
962 | ||
3da92f27 | 963 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 964 | { |
3da92f27 | 965 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
966 | char *cuuid = (char*)uuid; |
967 | int i; | |
46a533a9 | 968 | for (i = 0; i < 16; i++) |
82d9eba6 NB |
969 | cuuid[i] = super->set_uuid[i]; |
970 | } | |
971 | ||
a5d85af7 | 972 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 973 | { |
3da92f27 | 974 | struct mdp_superblock_1 *sb = st->sb; |
80bf9135 | 975 | struct bitmap_super_s *bsb = (void*)(((char*)sb)+MAX_SB_SIZE); |
46a533a9 JS |
976 | struct misc_dev_info *misc = |
977 | (void*)(((char*)sb)+MAX_SB_SIZE+BM_SUPER_SIZE); | |
82d9eba6 | 978 | int working = 0; |
f21e18ca | 979 | unsigned int i; |
a5d85af7 N |
980 | unsigned int role; |
981 | unsigned int map_disks = info->array.raid_disks; | |
80bf9135 N |
982 | unsigned long long super_offset; |
983 | unsigned long long data_size; | |
82d9eba6 | 984 | |
95eeceeb | 985 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 986 | info->array.major_version = 1; |
b8ac1967 | 987 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
988 | info->array.patch_version = 0; |
989 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
990 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 991 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
992 | info->array.md_minor = -1; |
993 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 994 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 995 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c | 996 | info->array.state = |
46a533a9 | 997 | (__le64_to_cpu(sb->resync_offset) == MaxSector) ? 1 : 0; |
353632d9 | 998 | |
e97a7cd0 | 999 | super_offset = __le64_to_cpu(sb->super_offset); |
353632d9 NB |
1000 | info->data_offset = __le64_to_cpu(sb->data_offset); |
1001 | info->component_size = __le64_to_cpu(sb->size); | |
e97a7cd0 | 1002 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { |
34a13953 | 1003 | info->bitmap_offset = (int32_t)__le32_to_cpu(sb->bitmap_offset); |
6438c249 N |
1004 | if (__le32_to_cpu(bsb->nodes) > 1) |
1005 | info->array.state |= (1 << MD_SB_CLUSTERED); | |
fa601c2e | 1006 | } else if (md_feature_any_ppl_on(sb->feature_map)) { |
e97a7cd0 AP |
1007 | info->ppl_offset = __le16_to_cpu(sb->ppl.offset); |
1008 | info->ppl_size = __le16_to_cpu(sb->ppl.size); | |
1009 | info->ppl_sector = super_offset + info->ppl_offset; | |
1010 | } | |
82d9eba6 NB |
1011 | |
1012 | info->disk.major = 0; | |
1013 | info->disk.minor = 0; | |
fbf8a0b7 | 1014 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 | 1015 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
911cead7 | 1016 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) |
fa7574f6 | 1017 | role = MD_DISK_ROLE_FAULTY; |
82d9eba6 NB |
1018 | else |
1019 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
1020 | ||
0ddc35be N |
1021 | if (info->array.level <= 0) |
1022 | data_size = __le64_to_cpu(sb->data_size); | |
1023 | else | |
1024 | data_size = __le64_to_cpu(sb->size); | |
80bf9135 N |
1025 | if (info->data_offset < super_offset) { |
1026 | unsigned long long end; | |
1027 | info->space_before = info->data_offset; | |
1028 | end = super_offset; | |
cc3130a7 N |
1029 | |
1030 | if (sb->bblog_offset && sb->bblog_size) { | |
1031 | unsigned long long bboffset = super_offset; | |
1032 | bboffset += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
1033 | if (bboffset < end) | |
1034 | end = bboffset; | |
1035 | } | |
1036 | ||
e97a7cd0 | 1037 | if (super_offset + info->bitmap_offset + info->ppl_offset < end) |
46a533a9 JS |
1038 | end = super_offset + info->bitmap_offset + |
1039 | info->ppl_offset; | |
cc3130a7 | 1040 | |
80bf9135 N |
1041 | if (info->data_offset + data_size < end) |
1042 | info->space_after = end - data_size - info->data_offset; | |
1043 | else | |
1044 | info->space_after = 0; | |
1045 | } else { | |
cc3130a7 N |
1046 | unsigned long long earliest; |
1047 | earliest = super_offset + (32+4)*2; /* match kernel */ | |
80bf9135 N |
1048 | if (info->bitmap_offset > 0) { |
1049 | unsigned long long bmend = info->bitmap_offset; | |
561ad559 | 1050 | unsigned long long size = calc_bitmap_size(bsb, 4096); |
80bf9135 | 1051 | size /= 512; |
cc3130a7 N |
1052 | bmend += size; |
1053 | if (bmend > earliest) | |
ac92b44a | 1054 | earliest = bmend; |
e97a7cd0 | 1055 | } else if (info->ppl_offset > 0) { |
46a533a9 JS |
1056 | unsigned long long pplend; |
1057 | ||
1058 | pplend = info->ppl_offset + info->ppl_size; | |
e97a7cd0 AP |
1059 | if (pplend > earliest) |
1060 | earliest = pplend; | |
cc3130a7 N |
1061 | } |
1062 | if (sb->bblog_offset && sb->bblog_size) { | |
1063 | unsigned long long bbend = super_offset; | |
1064 | bbend += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
27c7c87a | 1065 | bbend += __le16_to_cpu(sb->bblog_size); |
cc3130a7 N |
1066 | if (bbend > earliest) |
1067 | earliest = bbend; | |
1068 | } | |
1069 | if (earliest < info->data_offset) | |
1070 | info->space_before = info->data_offset - earliest; | |
1071 | else | |
1072 | info->space_before = 0; | |
46a533a9 JS |
1073 | info->space_after = misc->device_size - data_size - |
1074 | info->data_offset; | |
80bf9135 | 1075 | } |
c4b26c64 N |
1076 | if (info->space_before == 0 && info->space_after == 0) { |
1077 | /* It will look like we don't support data_offset changes, | |
1078 | * be we do - it's just that there is no room. | |
1079 | * A change that reduced the number of devices should | |
1080 | * still be allowed, so set the otherwise useless value of '1' | |
1081 | */ | |
1082 | info->space_after = 1; | |
1083 | } | |
80bf9135 | 1084 | |
82d9eba6 NB |
1085 | info->disk.raid_disk = -1; |
1086 | switch(role) { | |
fa7574f6 | 1087 | case MD_DISK_ROLE_SPARE: |
46a533a9 JS |
1088 | /* spare: not active, not sync, not faulty */ |
1089 | info->disk.state = 0; | |
82d9eba6 | 1090 | break; |
fa7574f6 | 1091 | case MD_DISK_ROLE_FAULTY: |
aa313118 | 1092 | info->disk.state = (1 << MD_DISK_FAULTY); /* faulty */ |
82d9eba6 | 1093 | break; |
ed94976d SL |
1094 | case MD_DISK_ROLE_JOURNAL: |
1095 | info->disk.state = (1 << MD_DISK_JOURNAL); | |
1096 | info->disk.raid_disk = role; | |
46a533a9 JS |
1097 | /* journal uses all 4kB blocks*/ |
1098 | info->space_after = (misc->device_size - info->data_offset) % 8; | |
ed94976d | 1099 | break; |
82d9eba6 NB |
1100 | default: |
1101 | info->disk.state = 6; /* active and in sync */ | |
1102 | info->disk.raid_disk = role; | |
1103 | } | |
cb099724 N |
1104 | if (sb->devflags & WriteMostly1) |
1105 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
71574efb N |
1106 | if (sb->devflags & FailFast1) |
1107 | info->disk.state |= (1 << MD_DISK_FAILFAST); | |
82d9eba6 | 1108 | info->events = __le64_to_cpu(sb->events); |
1522c538 | 1109 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 1110 | info->safe_mode_delay = 200; |
82d9eba6 NB |
1111 | |
1112 | memcpy(info->uuid, sb->set_uuid, 16); | |
1113 | ||
31317663 NB |
1114 | strncpy(info->name, sb->set_name, 32); |
1115 | info->name[32] = 0; | |
947fd4dd | 1116 | |
aacb2f81 | 1117 | if ((__le32_to_cpu(sb->feature_map)&MD_FEATURE_REPLACEMENT)) { |
72e7fb13 | 1118 | info->disk.state &= ~(1 << MD_DISK_SYNC); |
aacb2f81 N |
1119 | info->disk.state |= 1 << MD_DISK_REPLACEMENT; |
1120 | } | |
1121 | ||
921d9e16 N |
1122 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
1123 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
1124 | else | |
1125 | info->recovery_start = MaxSector; | |
1126 | ||
353632d9 NB |
1127 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
1128 | info->reshape_active = 1; | |
26bf5587 N |
1129 | if ((sb->feature_map & __le32_to_cpu(MD_FEATURE_NEW_OFFSET)) && |
1130 | sb->new_offset != 0) | |
5e88ab2e | 1131 | info->reshape_active |= RESHAPE_NO_BACKUP; |
353632d9 NB |
1132 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); |
1133 | info->new_level = __le32_to_cpu(sb->new_level); | |
1134 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
1135 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 1136 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
1137 | if (info->delta_disks < 0) |
1138 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
1139 | } else |
1140 | info->reshape_active = 0; | |
1141 | ||
6e75048b AK |
1142 | info->recovery_blocked = info->reshape_active; |
1143 | ||
a5d85af7 N |
1144 | if (map) |
1145 | for (i=0; i<map_disks; i++) | |
1146 | map[i] = 0; | |
f21e18ca | 1147 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 1148 | role = __le16_to_cpu(sb->dev_roles[i]); |
fa7574f6 | 1149 | if (/*role == MD_DISK_ROLE_SPARE || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 1150 | working++; |
a5d85af7 N |
1151 | if (map && role < map_disks) |
1152 | map[role] = 1; | |
1153 | } | |
82d9eba6 NB |
1154 | } |
1155 | ||
1156 | info->array.working_disks = working; | |
e97a7cd0 AP |
1157 | |
1158 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_JOURNAL)) { | |
051f3265 | 1159 | info->journal_device_required = 1; |
e97a7cd0 | 1160 | info->consistency_policy = CONSISTENCY_POLICY_JOURNAL; |
fa601c2e | 1161 | } else if (md_feature_any_ppl_on(sb->feature_map)) { |
e97a7cd0 AP |
1162 | info->consistency_policy = CONSISTENCY_POLICY_PPL; |
1163 | } else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
1164 | info->consistency_policy = CONSISTENCY_POLICY_BITMAP; | |
1165 | } else if (info->array.level <= 0) { | |
1166 | info->consistency_policy = CONSISTENCY_POLICY_NONE; | |
1167 | } else { | |
1168 | info->consistency_policy = CONSISTENCY_POLICY_RESYNC; | |
1169 | } | |
1170 | ||
051f3265 | 1171 | info->journal_clean = 0; |
82d9eba6 NB |
1172 | } |
1173 | ||
00bbdbda N |
1174 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
1175 | { | |
1176 | struct mdinfo *info; | |
1177 | ||
1178 | if (subarray) | |
1179 | return NULL; | |
1180 | ||
503975b9 | 1181 | info = xmalloc(sizeof(*info)); |
00bbdbda N |
1182 | getinfo_super1(st, info, NULL); |
1183 | return info; | |
1184 | } | |
1185 | ||
68c7d6d7 | 1186 | static int update_super1(struct supertype *st, struct mdinfo *info, |
46a533a9 | 1187 | char *update, char *devname, int verbose, |
e5eac01f | 1188 | int uuid_set, char *homehost) |
82d9eba6 | 1189 | { |
5a31170d N |
1190 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
1191 | * if any change was made. For others, the return value is | |
1192 | * ignored. | |
c4d831e1 | 1193 | */ |
82d9eba6 | 1194 | int rv = 0; |
3da92f27 | 1195 | struct mdp_superblock_1 *sb = st->sb; |
81a8a694 | 1196 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
82d9eba6 | 1197 | |
def11332 N |
1198 | if (strcmp(update, "homehost") == 0 && |
1199 | homehost) { | |
1200 | /* Note that 'homehost' is special as it is really | |
1201 | * a "name" update. | |
1202 | */ | |
1203 | char *c; | |
1204 | update = "name"; | |
1205 | c = strchr(sb->set_name, ':'); | |
1206 | if (c) | |
1207 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
1208 | else | |
1209 | strncpy(info->name, sb->set_name, 32); | |
1210 | info->name[32] = 0; | |
1211 | } | |
1212 | ||
67a8c82d NB |
1213 | if (strcmp(update, "force-one")==0) { |
1214 | /* Not enough devices for a working array, | |
1215 | * so bring this one up-to-date | |
1216 | */ | |
c4d831e1 NB |
1217 | if (sb->events != __cpu_to_le64(info->events)) |
1218 | rv = 1; | |
6d3d5804 | 1219 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 1220 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
1221 | /* Degraded array and 'force' requests to |
1222 | * maybe need to mark it 'clean'. | |
1223 | */ | |
82d9eba6 | 1224 | switch(__le32_to_cpu(sb->level)) { |
46a533a9 JS |
1225 | case 4: |
1226 | case 5: | |
1227 | case 6: | |
82d9eba6 | 1228 | /* need to force clean */ |
b7528a20 | 1229 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 1230 | rv = 1; |
b7528a20 | 1231 | sb->resync_offset = MaxSector; |
82d9eba6 | 1232 | } |
1e2b2765 | 1233 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
1234 | int d = info->disk.number; |
1235 | int want; | |
aacb2f81 | 1236 | if (info->disk.state & (1<<MD_DISK_ACTIVE)) |
a2ce5a1a | 1237 | want = info->disk.raid_disk; |
69a48116 SL |
1238 | else if (info->disk.state & (1<<MD_DISK_JOURNAL)) |
1239 | want = MD_DISK_ROLE_JOURNAL; | |
82d9eba6 | 1240 | else |
fa7574f6 | 1241 | want = MD_DISK_ROLE_SPARE; |
a2ce5a1a N |
1242 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
1243 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
1244 | rv = 1; |
1245 | } | |
d43494fc | 1246 | if (info->reshape_active && |
46a533a9 JS |
1247 | sb->feature_map & |
1248 | __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
d43494fc | 1249 | info->delta_disks >= 0 && |
46a533a9 JS |
1250 | info->reshape_progress < |
1251 | __le64_to_cpu(sb->reshape_position)) { | |
1252 | sb->reshape_position = | |
1253 | __cpu_to_le64(info->reshape_progress); | |
d43494fc N |
1254 | rv = 1; |
1255 | } | |
1256 | if (info->reshape_active && | |
46a533a9 JS |
1257 | sb->feature_map & |
1258 | __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
d43494fc | 1259 | info->delta_disks < 0 && |
46a533a9 JS |
1260 | info->reshape_progress > |
1261 | __le64_to_cpu(sb->reshape_position)) { | |
1262 | sb->reshape_position = | |
1263 | __cpu_to_le64(info->reshape_progress); | |
d43494fc N |
1264 | rv = 1; |
1265 | } | |
1e2b2765 | 1266 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 1267 | unsigned int i; |
c5f71c24 | 1268 | int fd; |
f21e18ca | 1269 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f | 1270 | |
46a533a9 JS |
1271 | for (i = 0; i < max; i++) |
1272 | if (__le16_to_cpu(sb->dev_roles[i]) >= | |
1273 | MD_DISK_ROLE_FAULTY) | |
f752781f NB |
1274 | break; |
1275 | sb->dev_number = __cpu_to_le32(i); | |
1276 | info->disk.number = i; | |
68fee4af | 1277 | if (i >= max) { |
f752781f | 1278 | sb->max_dev = __cpu_to_le32(max+1); |
68fee4af | 1279 | } |
f752781f | 1280 | |
c5f71c24 | 1281 | random_uuid(sb->device_uuid); |
f752781f | 1282 | |
46a533a9 | 1283 | sb->dev_roles[i] = __cpu_to_le16(info->disk.raid_disk); |
1c6cb603 N |
1284 | |
1285 | fd = open(devname, O_RDONLY); | |
1286 | if (fd >= 0) { | |
1287 | unsigned long long ds; | |
1288 | get_dev_size(fd, devname, &ds); | |
1289 | close(fd); | |
1290 | ds >>= 9; | |
1291 | if (__le64_to_cpu(sb->super_offset) < | |
1292 | __le64_to_cpu(sb->data_offset)) { | |
1293 | sb->data_size = __cpu_to_le64( | |
1294 | ds - __le64_to_cpu(sb->data_offset)); | |
1295 | } else { | |
1296 | ds -= 8*2; | |
1297 | ds &= ~(unsigned long long)(4*2-1); | |
1298 | sb->super_offset = __cpu_to_le64(ds); | |
1299 | sb->data_size = __cpu_to_le64( | |
1300 | ds - __le64_to_cpu(sb->data_offset)); | |
1301 | } | |
1302 | } | |
1e2b2765 | 1303 | } else if (strcmp(update, "linear-grow-update") == 0) { |
68fee4af | 1304 | int max = __le32_to_cpu(sb->max_dev); |
82d9eba6 | 1305 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
68fee4af LZ |
1306 | if (info->array.raid_disks > max) { |
1307 | sb->max_dev = __cpu_to_le32(max+1); | |
1308 | } | |
f752781f NB |
1309 | sb->dev_roles[info->disk.number] = |
1310 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 1311 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 1312 | /* make sure resync happens */ |
434b7755 | 1313 | sb->resync_offset = 0ULL; |
1e2b2765 | 1314 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 1315 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 1316 | |
561ad559 AP |
1317 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET) |
1318 | memcpy(bms->uuid, sb->set_uuid, 16); | |
5a31170d N |
1319 | } else if (strcmp(update, "no-bitmap") == 0) { |
1320 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
688e99a7 N |
1321 | } else if (strcmp(update, "bbl") == 0) { |
1322 | /* only possible if there is room after the bitmap, or if | |
1323 | * there is no bitmap | |
1324 | */ | |
1325 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1326 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
561ad559 | 1327 | long bitmap_offset = 0; |
688e99a7 N |
1328 | long bm_sectors = 0; |
1329 | long space; | |
1330 | ||
1331 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
561ad559 AP |
1332 | bitmap_offset = (long)__le32_to_cpu(sb->bitmap_offset); |
1333 | bm_sectors = calc_bitmap_size(bms, 4096) >> 9; | |
fa601c2e | 1334 | } else if (md_feature_any_ppl_on(sb->feature_map)) { |
e97a7cd0 AP |
1335 | bitmap_offset = (long)__le16_to_cpu(sb->ppl.offset); |
1336 | bm_sectors = (long)__le16_to_cpu(sb->ppl.size); | |
688e99a7 | 1337 | } |
32141c17 | 1338 | |
688e99a7 | 1339 | if (sb_offset < data_offset) { |
46a533a9 JS |
1340 | /* |
1341 | * 1.1 or 1.2. Put bbl after bitmap leaving | |
1342 | * at least 32K | |
688e99a7 N |
1343 | */ |
1344 | long bb_offset; | |
f79bbf4f | 1345 | bb_offset = sb_offset + 8; |
688e99a7 | 1346 | if (bm_sectors && bitmap_offset > 0) |
f79bbf4f | 1347 | bb_offset = bitmap_offset + bm_sectors; |
46a533a9 JS |
1348 | while (bb_offset < (long)sb_offset + 8 + 32*2 && |
1349 | bb_offset + 8+8 <= (long)data_offset) | |
f79bbf4f N |
1350 | /* too close to bitmap, and room to grow */ |
1351 | bb_offset += 8; | |
1352 | if (bb_offset + 8 <= (long)data_offset) { | |
688e99a7 N |
1353 | sb->bblog_size = __cpu_to_le16(8); |
1354 | sb->bblog_offset = __cpu_to_le32(bb_offset); | |
1355 | } | |
1356 | } else { | |
1357 | /* 1.0 - Put bbl just before super block */ | |
1358 | if (bm_sectors && bitmap_offset < 0) | |
1359 | space = -bitmap_offset - bm_sectors; | |
1360 | else | |
1361 | space = sb_offset - data_offset - | |
1362 | __le64_to_cpu(sb->data_size); | |
1363 | if (space >= 8) { | |
1364 | sb->bblog_size = __cpu_to_le16(8); | |
1365 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1366 | } | |
1367 | } | |
1368 | } else if (strcmp(update, "no-bbl") == 0) { | |
1369 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
1370 | pr_err("Cannot remove active bbl from %s\n",devname); | |
1371 | else { | |
1372 | sb->bblog_size = 0; | |
1373 | sb->bblog_shift = 0; | |
1374 | sb->bblog_offset = 0; | |
1375 | } | |
6dd16dac N |
1376 | } else if (strcmp(update, "force-no-bbl") == 0) { |
1377 | sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS); | |
1378 | sb->bblog_size = 0; | |
1379 | sb->bblog_shift = 0; | |
1380 | sb->bblog_offset = 0; | |
e6e9dd3f AP |
1381 | } else if (strcmp(update, "ppl") == 0) { |
1382 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1383 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
1384 | unsigned long long data_size = __le64_to_cpu(sb->data_size); | |
1385 | long bb_offset = __le32_to_cpu(sb->bblog_offset); | |
1386 | int space; | |
e6e9dd3f AP |
1387 | int offset; |
1388 | ||
1389 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1390 | pr_err("Cannot add PPL to array with bitmap\n"); | |
1391 | return -2; | |
1392 | } | |
1393 | ||
1394 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_JOURNAL)) { | |
1395 | pr_err("Cannot add PPL to array with journal\n"); | |
1396 | return -2; | |
1397 | } | |
1398 | ||
1399 | if (sb_offset < data_offset) { | |
1400 | if (bb_offset) | |
1401 | space = bb_offset - 8; | |
1402 | else | |
1403 | space = data_offset - sb_offset - 8; | |
1404 | offset = 8; | |
1405 | } else { | |
1406 | offset = -(sb_offset - data_offset - data_size); | |
1407 | if (offset < INT16_MIN) | |
1408 | offset = INT16_MIN; | |
1409 | space = -(offset - bb_offset); | |
1410 | } | |
1411 | ||
1412 | if (space < (PPL_HEADER_SIZE >> 9) + 8) { | |
1413 | pr_err("Not enough space to add ppl\n"); | |
1414 | return -2; | |
1415 | } | |
1416 | ||
fa601c2e PB |
1417 | if (space >= (MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9)) { |
1418 | space = (MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9); | |
1419 | } else { | |
1420 | int optimal_space = choose_ppl_space( | |
1421 | __le32_to_cpu(sb->chunksize)); | |
1422 | if (space > optimal_space) | |
1423 | space = optimal_space; | |
1424 | if (space > UINT16_MAX) | |
1425 | space = UINT16_MAX; | |
1426 | } | |
e6e9dd3f AP |
1427 | |
1428 | sb->ppl.offset = __cpu_to_le16(offset); | |
1429 | sb->ppl.size = __cpu_to_le16(space); | |
1430 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL); | |
1431 | } else if (strcmp(update, "no-ppl") == 0) { | |
fa601c2e PB |
1432 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_PPL | |
1433 | MD_FEATURE_MUTLIPLE_PPLS); | |
1e2b2765 | 1434 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
1435 | if (info->name[0] == 0) |
1436 | sprintf(info->name, "%d", info->array.md_minor); | |
1437 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
1438 | if (homehost && | |
1439 | strchr(info->name, ':') == NULL && | |
1440 | strlen(homehost)+1+strlen(info->name) < 32) { | |
1441 | strcpy(sb->set_name, homehost); | |
1442 | strcat(sb->set_name, ":"); | |
1443 | strcat(sb->set_name, info->name); | |
4d061b02 JS |
1444 | } else { |
1445 | int namelen; | |
1446 | ||
1447 | namelen = min((int)strlen(info->name), | |
1448 | (int)sizeof(sb->set_name) - 1); | |
1449 | memcpy(sb->set_name, info->name, namelen); | |
1450 | memset(&sb->set_name[namelen], '\0', | |
1451 | sizeof(sb->set_name) - namelen); | |
1452 | } | |
1e2b2765 | 1453 | } else if (strcmp(update, "devicesize") == 0 && |
46a533a9 JS |
1454 | __le64_to_cpu(sb->super_offset) < |
1455 | __le64_to_cpu(sb->data_offset)) { | |
bee8ec56 NB |
1456 | /* set data_size to device size less data_offset */ |
1457 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
911cead7 | 1458 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); |
bee8ec56 NB |
1459 | sb->data_size = __cpu_to_le64( |
1460 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
d5ff855d | 1461 | } else if (strncmp(update, "revert-reshape", 14) == 0) { |
199f1a1f | 1462 | rv = -2; |
46a533a9 JS |
1463 | if (!(sb->feature_map & |
1464 | __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE))) | |
199f1a1f N |
1465 | pr_err("No active reshape to revert on %s\n", |
1466 | devname); | |
1467 | else { | |
199f1a1f | 1468 | __u32 temp; |
a2836f12 N |
1469 | unsigned long long reshape_sectors; |
1470 | long reshape_chunk; | |
1471 | rv = 0; | |
d5ff855d N |
1472 | /* If the reshape hasn't started, just stop it. |
1473 | * It is conceivable that a stripe was modified but | |
1474 | * the metadata not updated. In that case the backup | |
1475 | * should have been used to get passed the critical stage. | |
1476 | * If that couldn't happen, the "-nobackup" version | |
1477 | * will be used. | |
1478 | */ | |
1479 | if (strcmp(update, "revert-reshape-nobackup") == 0 && | |
1480 | sb->reshape_position == 0 && | |
1481 | (__le32_to_cpu(sb->delta_disks) > 0 || | |
1482 | (__le32_to_cpu(sb->delta_disks) == 0 && | |
1483 | !(sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS))))) { | |
1484 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE); | |
1485 | sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
1486 | __le32_to_cpu(sb->delta_disks)); | |
1487 | sb->delta_disks = 0; | |
1488 | goto done; | |
1489 | } | |
a2836f12 N |
1490 | /* reshape_position is a little messy. |
1491 | * Its value must be a multiple of the larger | |
1492 | * chunk size, and of the "after" data disks. | |
1493 | * So when reverting we need to change it to | |
1494 | * be a multiple of the new "after" data disks, | |
1495 | * which is the old "before". | |
1496 | * If it isn't already a multiple of 'before', | |
1497 | * the only thing we could do would be | |
1498 | * copy some block around on the disks, which | |
1499 | * is easy to get wrong. | |
1500 | * So we reject a revert-reshape unless the | |
1501 | * alignment is good. | |
1502 | */ | |
efb3994e N |
1503 | if (__le32_to_cpu(sb->level) >= 4 && |
1504 | __le32_to_cpu(sb->level) <= 6) { | |
46a533a9 JS |
1505 | reshape_sectors = |
1506 | __le64_to_cpu(sb->reshape_position); | |
efb3994e | 1507 | reshape_chunk = __le32_to_cpu(sb->new_chunk); |
46a533a9 JS |
1508 | reshape_chunk *= __le32_to_cpu(sb->raid_disks) - |
1509 | __le32_to_cpu(sb->delta_disks) - | |
efb3994e N |
1510 | (__le32_to_cpu(sb->level)==6 ? 2 : 1); |
1511 | if (reshape_sectors % reshape_chunk) { | |
1512 | pr_err("Reshape position is not suitably aligned.\n"); | |
2bf62891 | 1513 | pr_err("Try normal assembly and stop again\n"); |
efb3994e N |
1514 | return -2; |
1515 | } | |
a2836f12 | 1516 | } |
46a533a9 JS |
1517 | sb->raid_disks = |
1518 | __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
1519 | __le32_to_cpu(sb->delta_disks)); | |
199f1a1f N |
1520 | if (sb->delta_disks == 0) |
1521 | sb->feature_map ^= __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS); | |
1522 | else | |
1523 | sb->delta_disks = __cpu_to_le32(-__le32_to_cpu(sb->delta_disks)); | |
1524 | ||
1525 | temp = sb->new_layout; | |
1526 | sb->new_layout = sb->layout; | |
1527 | sb->layout = temp; | |
1528 | ||
1529 | temp = sb->new_chunk; | |
1530 | sb->new_chunk = sb->chunksize; | |
1531 | sb->chunksize = temp; | |
1532 | ||
46a533a9 JS |
1533 | if (sb->feature_map & |
1534 | __cpu_to_le32(MD_FEATURE_NEW_OFFSET)) { | |
1535 | long offset_delta = | |
1536 | (int32_t)__le32_to_cpu(sb->new_offset); | |
419e0182 N |
1537 | sb->data_offset = __cpu_to_le64(__le64_to_cpu(sb->data_offset) + offset_delta); |
1538 | sb->new_offset = __cpu_to_le32(-offset_delta); | |
1539 | sb->data_size = __cpu_to_le64(__le64_to_cpu(sb->data_size) - offset_delta); | |
199f1a1f | 1540 | } |
d5ff855d | 1541 | done:; |
199f1a1f | 1542 | } |
46a533a9 | 1543 | } else if (strcmp(update, "_reshape_progress") == 0) |
353632d9 | 1544 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
46a533a9 | 1545 | else if (strcmp(update, "writemostly") == 0) |
16715c01 | 1546 | sb->devflags |= WriteMostly1; |
46a533a9 | 1547 | else if (strcmp(update, "readwrite") == 0) |
16715c01 | 1548 | sb->devflags &= ~WriteMostly1; |
71574efb N |
1549 | else if (strcmp(update, "failfast") == 0) |
1550 | sb->devflags |= FailFast1; | |
1551 | else if (strcmp(update, "nofailfast") == 0) | |
1552 | sb->devflags &= ~FailFast1; | |
027c099f N |
1553 | else if (strcmp(update, "layout-original") == 0 || |
1554 | strcmp(update, "layout-alternate") == 0) { | |
1555 | if (__le32_to_cpu(sb->level) != 0) { | |
1556 | pr_err("%s: %s only supported for RAID0\n", | |
1557 | devname?:"", update); | |
1558 | rv = -1; | |
1559 | } else { | |
1560 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_RAID0_LAYOUT); | |
1561 | sb->layout = __cpu_to_le32(update[7] == 'o' ? 1 : 2); | |
1562 | } | |
1563 | } else | |
1e2b2765 | 1564 | rv = -1; |
82d9eba6 NB |
1565 | |
1566 | sb->sb_csum = calc_sb_1_csum(sb); | |
d15a1f72 | 1567 | |
82d9eba6 NB |
1568 | return rv; |
1569 | } | |
1570 | ||
3da92f27 | 1571 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
5308f117 | 1572 | struct shape *s, char *name, char *homehost, |
83cd1e97 | 1573 | int *uuid, unsigned long long data_offset) |
82d9eba6 | 1574 | { |
6416d527 | 1575 | struct mdp_superblock_1 *sb; |
82d9eba6 | 1576 | int spares; |
05697ec1 | 1577 | char defname[10]; |
911cead7 | 1578 | int sbsize; |
6416d527 | 1579 | |
3c0bcd46 | 1580 | if (posix_memalign((void**)&sb, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 1581 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
1582 | return 0; |
1583 | } | |
1afa9308 | 1584 | memset(sb, 0, SUPER1_SIZE); |
82d9eba6 | 1585 | |
64557c33 | 1586 | st->sb = sb; |
ba7eb04f | 1587 | if (info == NULL) { |
82d9eba6 NB |
1588 | /* zeroing superblock */ |
1589 | return 0; | |
05697ec1 | 1590 | } |
82d9eba6 NB |
1591 | |
1592 | spares = info->working_disks - info->active_disks; | |
911cead7 | 1593 | if (info->raid_disks + spares > MAX_DEVS) { |
e7b84f9d | 1594 | pr_err("too many devices requested: %d+%d > %d\n", |
911cead7 | 1595 | info->raid_disks , spares, MAX_DEVS); |
82d9eba6 NB |
1596 | return 0; |
1597 | } | |
1598 | ||
82d9eba6 NB |
1599 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
1600 | sb->major_version = __cpu_to_le32(1); | |
1601 | sb->feature_map = 0; | |
1602 | sb->pad0 = 0; | |
34163fc7 | 1603 | |
350f29f9 NB |
1604 | if (uuid) |
1605 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
c5f71c24 JS |
1606 | else |
1607 | random_uuid(sb->set_uuid);; | |
82d9eba6 | 1608 | |
05697ec1 NB |
1609 | if (name == NULL || *name == 0) { |
1610 | sprintf(defname, "%d", info->md_minor); | |
1611 | name = defname; | |
1612 | } | |
05697ec1 NB |
1613 | if (homehost && |
1614 | strchr(name, ':')== NULL && | |
1615 | strlen(homehost)+1+strlen(name) < 32) { | |
1616 | strcpy(sb->set_name, homehost); | |
1617 | strcat(sb->set_name, ":"); | |
1618 | strcat(sb->set_name, name); | |
4d061b02 JS |
1619 | } else { |
1620 | int namelen; | |
1621 | ||
1622 | namelen = min((int)strlen(name), | |
1623 | (int)sizeof(sb->set_name) - 1); | |
1624 | memcpy(sb->set_name, name, namelen); | |
1625 | memset(&sb->set_name[namelen], '\0', | |
1626 | sizeof(sb->set_name) - namelen); | |
1627 | } | |
82d9eba6 NB |
1628 | |
1629 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
1630 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 1631 | sb->layout = __cpu_to_le32(info->layout); |
5308f117 | 1632 | sb->size = __cpu_to_le64(s->size*2ULL); |
82d9eba6 NB |
1633 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
1634 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
1635 | ||
83cd1e97 | 1636 | sb->data_offset = __cpu_to_le64(data_offset); |
82d9eba6 NB |
1637 | sb->data_size = __cpu_to_le64(0); |
1638 | sb->super_offset = __cpu_to_le64(0); | |
1639 | sb->recovery_offset = __cpu_to_le64(0); | |
1640 | ||
1641 | sb->utime = sb->ctime; | |
1642 | sb->events = __cpu_to_le64(1); | |
34321279 | 1643 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 1644 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
1645 | else |
1646 | sb->resync_offset = 0; | |
46a533a9 JS |
1647 | sbsize = sizeof(struct mdp_superblock_1) + |
1648 | 2 * (info->raid_disks + spares); | |
911cead7 | 1649 | sbsize = ROUND_UP(sbsize, 512); |
46a533a9 JS |
1650 | sb->max_dev = |
1651 | __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
82d9eba6 | 1652 | |
46a533a9 JS |
1653 | memset(sb->dev_roles, 0xff, |
1654 | MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); | |
82d9eba6 | 1655 | |
e97a7cd0 AP |
1656 | if (s->consistency_policy == CONSISTENCY_POLICY_PPL) |
1657 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL); | |
1658 | ||
82d9eba6 NB |
1659 | return 1; |
1660 | } | |
1661 | ||
111d01fc NB |
1662 | struct devinfo { |
1663 | int fd; | |
1664 | char *devname; | |
72ca9bcf | 1665 | long long data_offset; |
329dfc28 | 1666 | unsigned long long dev_size; |
111d01fc NB |
1667 | mdu_disk_info_t disk; |
1668 | struct devinfo *next; | |
1669 | }; | |
32141c17 | 1670 | |
82d9eba6 | 1671 | /* Add a device to the superblock being created */ |
f20c3968 | 1672 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
72ca9bcf | 1673 | int fd, char *devname, unsigned long long data_offset) |
82d9eba6 | 1674 | { |
3da92f27 | 1675 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 1676 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc | 1677 | struct devinfo *di, **dip; |
e23c2663 | 1678 | int dk_state; |
d15a1f72 | 1679 | |
e23c2663 | 1680 | dk_state = dk->state & ~(1<<MD_DISK_FAILFAST); |
aa313118 GK |
1681 | if ((dk_state & (1<<MD_DISK_ACTIVE)) && |
1682 | (dk_state & (1<<MD_DISK_SYNC)))/* active, sync */ | |
82d9eba6 | 1683 | *rp = __cpu_to_le16(dk->raid_disk); |
e23c2663 | 1684 | else if (dk_state & (1<<MD_DISK_JOURNAL)) |
cc1799c3 | 1685 | *rp = MD_DISK_ROLE_JOURNAL; |
46a533a9 JS |
1686 | else if ((dk_state & ~(1<<MD_DISK_ACTIVE)) == 0) |
1687 | /* active or idle -> spare */ | |
fa7574f6 | 1688 | *rp = MD_DISK_ROLE_SPARE; |
34163fc7 | 1689 | else |
fa7574f6 | 1690 | *rp = MD_DISK_ROLE_FAULTY; |
111d01fc | 1691 | |
f21e18ca | 1692 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
911cead7 | 1693 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) |
9df04a4f | 1694 | sb->max_dev = __cpu_to_le32(dk->number+1); |
8844e291 | 1695 | |
d2ca6449 | 1696 | sb->dev_number = __cpu_to_le32(dk->number); |
16715c01 | 1697 | sb->devflags = 0; /* don't copy another disks flags */ |
d2ca6449 NB |
1698 | sb->sb_csum = calc_sb_1_csum(sb); |
1699 | ||
111d01fc NB |
1700 | dip = (struct devinfo **)&st->info; |
1701 | while (*dip) | |
1702 | dip = &(*dip)->next; | |
503975b9 | 1703 | di = xmalloc(sizeof(struct devinfo)); |
111d01fc NB |
1704 | di->fd = fd; |
1705 | di->devname = devname; | |
1706 | di->disk = *dk; | |
72ca9bcf | 1707 | di->data_offset = data_offset; |
329dfc28 | 1708 | get_dev_size(fd, NULL, &di->dev_size); |
111d01fc NB |
1709 | di->next = NULL; |
1710 | *dip = di; | |
f20c3968 DW |
1711 | |
1712 | return 0; | |
82d9eba6 NB |
1713 | } |
1714 | ||
b138214f | 1715 | static int locate_bitmap1(struct supertype *st, int fd, int node_num); |
14263cf1 | 1716 | |
3da92f27 | 1717 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 1718 | { |
3da92f27 | 1719 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 1720 | unsigned long long sb_offset; |
308340aa | 1721 | struct align_fd afd; |
82d9eba6 | 1722 | int sbsize; |
5dd497ee | 1723 | unsigned long long dsize; |
96395475 | 1724 | |
beae1dfe NB |
1725 | if (!get_dev_size(fd, NULL, &dsize)) |
1726 | return 1; | |
1727 | ||
1728 | dsize >>= 9; | |
96395475 | 1729 | |
5dd497ee | 1730 | if (dsize < 24) |
96395475 NB |
1731 | return 2; |
1732 | ||
308340aa JS |
1733 | init_afd(&afd, fd); |
1734 | ||
96395475 NB |
1735 | /* |
1736 | * Calculate the position of the superblock. | |
1737 | * It is always aligned to a 4K boundary and | |
1738 | * depending on minor_version, it can be: | |
1739 | * 0: At least 8K, but less than 12K, from end of device | |
1740 | * 1: At start of device | |
1741 | * 2: 4K from start of device. | |
1742 | */ | |
1743 | switch(st->minor_version) { | |
1744 | case 0: | |
5dd497ee | 1745 | sb_offset = dsize; |
96395475 NB |
1746 | sb_offset -= 8*2; |
1747 | sb_offset &= ~(4*2-1); | |
1748 | break; | |
1749 | case 1: | |
6fbba4c9 | 1750 | sb_offset = 0; |
96395475 NB |
1751 | break; |
1752 | case 2: | |
1753 | sb_offset = 4*2; | |
1754 | break; | |
1755 | default: | |
1756 | return -EINVAL; | |
1757 | } | |
1758 | ||
6fbba4c9 NB |
1759 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
1760 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 | 1761 | ) { |
e7b84f9d | 1762 | pr_err("internal error - sb_offset is wrong\n"); |
96395475 NB |
1763 | abort(); |
1764 | } | |
82d9eba6 | 1765 | |
6fbba4c9 | 1766 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
1767 | return 3; |
1768 | ||
0a2f1894 | 1769 | sbsize = ROUND_UP(sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev), 512); |
82d9eba6 | 1770 | |
308340aa | 1771 | if (awrite(&afd, sb, sbsize) != sbsize) |
82d9eba6 NB |
1772 | return 4; |
1773 | ||
14263cf1 NB |
1774 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1775 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
911cead7 | 1776 | (((char*)sb)+MAX_SB_SIZE); |
14263cf1 | 1777 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
b138214f | 1778 | locate_bitmap1(st, fd, 0); |
308340aa JS |
1779 | if (awrite(&afd, bm, sizeof(*bm)) != sizeof(*bm)) |
1780 | return 5; | |
14263cf1 NB |
1781 | } |
1782 | } | |
570c0542 | 1783 | fsync(fd); |
d15a1f72 | 1784 | |
82d9eba6 NB |
1785 | return 0; |
1786 | } | |
1787 | ||
3da92f27 | 1788 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1789 | |
2fb749d1 NB |
1790 | static unsigned long choose_bm_space(unsigned long devsize) |
1791 | { | |
1792 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1793 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1794 | * NOTE: result must be multiple of 4K else bad things happen |
1795 | * on 4K-sector devices. | |
2fb749d1 | 1796 | */ |
7eef9be2 JS |
1797 | if (devsize < 64*2) |
1798 | return 0; | |
2fb749d1 NB |
1799 | if (devsize - 64*2 >= 200*1024*1024*2) |
1800 | return 128*2; | |
1801 | if (devsize - 4*2 > 8*1024*1024*2) | |
1802 | return 64*2; | |
1803 | return 4*2; | |
1804 | } | |
1805 | ||
e8090005 N |
1806 | static void free_super1(struct supertype *st); |
1807 | ||
198d5478 | 1808 | __u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len); |
cc1799c3 | 1809 | |
e97a7cd0 AP |
1810 | static int write_init_ppl1(struct supertype *st, struct mdinfo *info, int fd) |
1811 | { | |
1812 | struct mdp_superblock_1 *sb = st->sb; | |
1813 | void *buf; | |
1814 | struct ppl_header *ppl_hdr; | |
1815 | int ret; | |
1816 | ||
b2514242 PB |
1817 | /* first clear entire ppl space */ |
1818 | ret = zero_disk_range(fd, info->ppl_sector, info->ppl_size); | |
1819 | if (ret) | |
1820 | return ret; | |
1821 | ||
e97a7cd0 AP |
1822 | ret = posix_memalign(&buf, 4096, PPL_HEADER_SIZE); |
1823 | if (ret) { | |
1824 | pr_err("Failed to allocate PPL header buffer\n"); | |
1825 | return ret; | |
1826 | } | |
1827 | ||
1828 | memset(buf, 0, PPL_HEADER_SIZE); | |
1829 | ppl_hdr = buf; | |
1830 | memset(ppl_hdr->reserved, 0xff, PPL_HDR_RESERVED); | |
1831 | ppl_hdr->signature = __cpu_to_le32(~crc32c_le(~0, sb->set_uuid, | |
1832 | sizeof(sb->set_uuid))); | |
1833 | ppl_hdr->checksum = __cpu_to_le32(~crc32c_le(~0, buf, PPL_HEADER_SIZE)); | |
1834 | ||
1835 | if (lseek64(fd, info->ppl_sector * 512, SEEK_SET) < 0) { | |
1836 | ret = errno; | |
1837 | perror("Failed to seek to PPL header location"); | |
1838 | } | |
1839 | ||
1840 | if (!ret && write(fd, buf, PPL_HEADER_SIZE) != PPL_HEADER_SIZE) { | |
1841 | ret = errno; | |
1842 | perror("Write PPL header failed"); | |
1843 | } | |
1844 | ||
1845 | if (!ret) | |
1846 | fsync(fd); | |
1847 | ||
1848 | free(buf); | |
1849 | return ret; | |
1850 | } | |
1851 | ||
1852 | #define META_BLOCK_SIZE 4096 | |
1853 | ||
cc1799c3 SL |
1854 | static int write_empty_r5l_meta_block(struct supertype *st, int fd) |
1855 | { | |
1856 | struct r5l_meta_block *mb; | |
1857 | struct mdp_superblock_1 *sb = st->sb; | |
1858 | struct align_fd afd; | |
1859 | __u32 crc; | |
1860 | ||
1861 | init_afd(&afd, fd); | |
1862 | ||
1863 | if (posix_memalign((void**)&mb, 4096, META_BLOCK_SIZE) != 0) { | |
1864 | pr_err("Could not allocate memory for the meta block.\n"); | |
1865 | return 1; | |
1866 | } | |
1867 | ||
1868 | memset(mb, 0, META_BLOCK_SIZE); | |
1869 | ||
1870 | mb->magic = __cpu_to_le32(R5LOG_MAGIC); | |
1871 | mb->version = R5LOG_VERSION; | |
1872 | mb->meta_size = __cpu_to_le32(sizeof(struct r5l_meta_block)); | |
1873 | mb->seq = __cpu_to_le64(random32()); | |
1874 | mb->position = __cpu_to_le64(0); | |
1875 | ||
198d5478 SL |
1876 | crc = crc32c_le(0xffffffff, sb->set_uuid, sizeof(sb->set_uuid)); |
1877 | crc = crc32c_le(crc, (void *)mb, META_BLOCK_SIZE); | |
1878 | mb->checksum = crc; | |
cc1799c3 | 1879 | |
e97a7cd0 | 1880 | if (lseek64(fd, __le64_to_cpu(sb->data_offset) * 512, 0) < 0LL) { |
cc1799c3 SL |
1881 | pr_err("cannot seek to offset of the meta block\n"); |
1882 | goto fail_to_write; | |
1883 | } | |
1884 | ||
1885 | if (awrite(&afd, mb, META_BLOCK_SIZE) != META_BLOCK_SIZE) { | |
1886 | pr_err("failed to store write the meta block \n"); | |
1887 | goto fail_to_write; | |
1888 | } | |
1889 | fsync(fd); | |
1890 | ||
1891 | free(mb); | |
1892 | return 0; | |
1893 | ||
1894 | fail_to_write: | |
1895 | free(mb); | |
1896 | return 1; | |
1897 | } | |
1898 | ||
111d01fc | 1899 | static int write_init_super1(struct supertype *st) |
82d9eba6 | 1900 | { |
3da92f27 | 1901 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1902 | struct supertype *refst; |
111d01fc | 1903 | int rv = 0; |
f21e18ca | 1904 | unsigned long long bm_space; |
111d01fc | 1905 | struct devinfo *di; |
8fac0577 | 1906 | unsigned long long dsize, array_size; |
23bf42cc | 1907 | unsigned long long sb_offset; |
83cd1e97 | 1908 | unsigned long long data_offset; |
1b7eb672 | 1909 | long bm_offset; |
329dfc28 | 1910 | int raid0_need_layout = 0; |
82d9eba6 | 1911 | |
cc1799c3 SL |
1912 | for (di = st->info; di; di = di->next) { |
1913 | if (di->disk.state & (1 << MD_DISK_JOURNAL)) | |
e97a7cd0 | 1914 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_JOURNAL); |
329dfc28 N |
1915 | if (sb->level == 0 && sb->layout != 0) { |
1916 | struct devinfo *di2 = st->info; | |
1917 | unsigned long long s1, s2; | |
1918 | s1 = di->dev_size; | |
1919 | if (di->data_offset != INVALID_SECTORS) | |
1920 | s1 -= di->data_offset; | |
1921 | s1 /= __le32_to_cpu(sb->chunksize); | |
1922 | s2 = di2->dev_size; | |
1923 | if (di2->data_offset != INVALID_SECTORS) | |
1924 | s2 -= di2->data_offset; | |
1925 | s2 /= __le32_to_cpu(sb->chunksize); | |
1926 | if (s1 != s2) | |
1927 | raid0_need_layout = 1; | |
1928 | } | |
cc1799c3 SL |
1929 | } |
1930 | ||
4687f160 | 1931 | for (di = st->info; di; di = di->next) { |
f4dc5e9b | 1932 | if (di->disk.state & (1 << MD_DISK_FAULTY)) |
111d01fc | 1933 | continue; |
a0c8a17f NB |
1934 | if (di->fd < 0) |
1935 | continue; | |
82d9eba6 | 1936 | |
ba728be7 | 1937 | while (Kill(di->devname, NULL, 0, -1, 1) == 0) |
9277cc77 | 1938 | ; |
82d9eba6 | 1939 | |
111d01fc NB |
1940 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1941 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
adbb382b | 1942 | sb->devflags |= WriteMostly1; |
9a88e7b6 | 1943 | else |
adbb382b | 1944 | sb->devflags &= ~WriteMostly1; |
71574efb N |
1945 | if (di->disk.state & (1<<MD_DISK_FAILFAST)) |
1946 | sb->devflags |= FailFast1; | |
1947 | else | |
1948 | sb->devflags &= ~FailFast1; | |
892debc8 | 1949 | |
c5f71c24 | 1950 | random_uuid(sb->device_uuid); |
83208785 | 1951 | |
01290056 SL |
1952 | if (!(di->disk.state & (1<<MD_DISK_JOURNAL))) |
1953 | sb->events = 0; | |
111d01fc | 1954 | |
e8090005 | 1955 | refst = dup_super(st); |
1011e834 | 1956 | if (load_super1(refst, di->fd, NULL)==0) { |
e8090005 | 1957 | struct mdp_superblock_1 *refsb = refst->sb; |
111d01fc NB |
1958 | |
1959 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1960 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1961 | /* same array, so preserve events and | |
1962 | * dev_number */ | |
1963 | sb->events = refsb->events; | |
1964 | /* bugs in 2.6.17 and earlier mean the | |
1965 | * dev_number chosen in Manage must be preserved | |
1966 | */ | |
1967 | if (get_linux_version() >= 2006018) | |
1968 | sb->dev_number = refsb->dev_number; | |
1969 | } | |
e8090005 | 1970 | free_super1(refst); |
892debc8 | 1971 | } |
e8090005 | 1972 | free(refst); |
34163fc7 | 1973 | |
40114213 JS |
1974 | if (!get_dev_size(di->fd, NULL, &dsize)) { |
1975 | rv = 1; | |
1976 | goto error_out; | |
1977 | } | |
111d01fc | 1978 | dsize >>= 9; |
82d9eba6 | 1979 | |
111d01fc NB |
1980 | if (dsize < 24) { |
1981 | close(di->fd); | |
40114213 JS |
1982 | rv = 2; |
1983 | goto error_out; | |
111d01fc | 1984 | } |
82d9eba6 | 1985 | |
111d01fc NB |
1986 | /* |
1987 | * Calculate the position of the superblock. | |
1988 | * It is always aligned to a 4K boundary and | |
1989 | * depending on minor_version, it can be: | |
1990 | * 0: At least 8K, but less than 12K, from end of device | |
1991 | * 1: At start of device | |
1992 | * 2: 4K from start of device. | |
23bf42cc | 1993 | * data_offset has already been set. |
111d01fc NB |
1994 | */ |
1995 | array_size = __le64_to_cpu(sb->size); | |
1b7eb672 AP |
1996 | |
1997 | /* work out how much space we left for a bitmap */ | |
1998 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1999 | bitmap_super_t *bms = (bitmap_super_t *) | |
2000 | (((char *)sb) + MAX_SB_SIZE); | |
2001 | bm_space = calc_bitmap_size(bms, 4096) >> 9; | |
2002 | bm_offset = (long)__le32_to_cpu(sb->bitmap_offset); | |
fa601c2e PB |
2003 | } else if (md_feature_any_ppl_on(sb->feature_map)) { |
2004 | bm_space = MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9; | |
2005 | if (st->minor_version == 0) | |
e97a7cd0 | 2006 | bm_offset = -bm_space - 8; |
fa601c2e | 2007 | else |
e97a7cd0 | 2008 | bm_offset = 8; |
e97a7cd0 AP |
2009 | sb->ppl.offset = __cpu_to_le16(bm_offset); |
2010 | sb->ppl.size = __cpu_to_le16(bm_space); | |
1b7eb672 AP |
2011 | } else { |
2012 | bm_space = choose_bm_space(array_size); | |
2013 | bm_offset = 8; | |
2014 | } | |
111d01fc | 2015 | |
72ca9bcf | 2016 | data_offset = di->data_offset; |
23bf42cc N |
2017 | if (data_offset == INVALID_SECTORS) |
2018 | data_offset = st->data_offset; | |
111d01fc NB |
2019 | switch(st->minor_version) { |
2020 | case 0: | |
1b7eb672 AP |
2021 | /* Add 8 sectors for bad block log */ |
2022 | bm_space += 8; | |
23bf42cc N |
2023 | if (data_offset == INVALID_SECTORS) |
2024 | data_offset = 0; | |
111d01fc NB |
2025 | sb_offset = dsize; |
2026 | sb_offset -= 8*2; | |
2027 | sb_offset &= ~(4*2-1); | |
4c0ea7b0 | 2028 | sb->data_offset = __cpu_to_le64(data_offset); |
111d01fc | 2029 | sb->super_offset = __cpu_to_le64(sb_offset); |
f21e18ca | 2030 | if (sb_offset < array_size + bm_space) |
a380e275 | 2031 | bm_space = sb_offset - array_size; |
111d01fc | 2032 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
bf95d0f3 N |
2033 | if (bm_space >= 8) { |
2034 | sb->bblog_size = __cpu_to_le16(8); | |
2035 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
2036 | } | |
111d01fc NB |
2037 | break; |
2038 | case 1: | |
111d01fc | 2039 | case 2: |
1b7eb672 | 2040 | sb_offset = st->minor_version == 2 ? 8 : 0; |
23bf42cc N |
2041 | sb->super_offset = __cpu_to_le64(sb_offset); |
2042 | if (data_offset == INVALID_SECTORS) | |
1b7eb672 | 2043 | data_offset = sb_offset + 16; |
23bf42cc N |
2044 | |
2045 | sb->data_offset = __cpu_to_le64(data_offset); | |
2046 | sb->data_size = __cpu_to_le64(dsize - data_offset); | |
1b7eb672 | 2047 | if (data_offset >= sb_offset+bm_offset+bm_space+8) { |
f79bbf4f | 2048 | sb->bblog_size = __cpu_to_le16(8); |
1b7eb672 AP |
2049 | sb->bblog_offset = __cpu_to_le32(bm_offset + |
2050 | bm_space); | |
2051 | } else if (data_offset >= sb_offset + 16) { | |
bf95d0f3 | 2052 | sb->bblog_size = __cpu_to_le16(8); |
1b7eb672 | 2053 | /* '8' sectors for the bblog, and 'sb_offset' |
bf95d0f3 N |
2054 | * because we want offset from superblock, not |
2055 | * start of device. | |
2056 | */ | |
1b7eb672 AP |
2057 | sb->bblog_offset = __cpu_to_le32(data_offset - |
2058 | 8 - sb_offset); | |
bf95d0f3 | 2059 | } |
111d01fc NB |
2060 | break; |
2061 | default: | |
7a862a02 | 2062 | pr_err("Failed to write invalid metadata format 1.%i to %s\n", |
e7b84f9d | 2063 | st->minor_version, di->devname); |
40114213 JS |
2064 | rv = -EINVAL; |
2065 | goto out; | |
111d01fc | 2066 | } |
46a533a9 JS |
2067 | /* |
2068 | * Disable badblock log on clusters, or when | |
2069 | * explicitly requested | |
2070 | */ | |
86a406c2 | 2071 | if (st->nodes > 0 || conf_get_create_info()->bblist == 0) { |
e2efe9e7 N |
2072 | sb->bblog_size = 0; |
2073 | sb->bblog_offset = 0; | |
2074 | } | |
82d9eba6 | 2075 | |
329dfc28 N |
2076 | /* RAID0 needs a layout if devices aren't all the same size */ |
2077 | if (raid0_need_layout) | |
2078 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_RAID0_LAYOUT); | |
2079 | ||
111d01fc NB |
2080 | sb->sb_csum = calc_sb_1_csum(sb); |
2081 | rv = store_super1(st, di->fd); | |
cc1799c3 SL |
2082 | |
2083 | if (rv == 0 && (di->disk.state & (1 << MD_DISK_JOURNAL))) { | |
2084 | rv = write_empty_r5l_meta_block(st, di->fd); | |
2085 | if (rv) | |
2086 | goto error_out; | |
2087 | } | |
2088 | ||
e97a7cd0 | 2089 | if (rv == 0 && |
46a533a9 JS |
2090 | (__le32_to_cpu(sb->feature_map) & |
2091 | MD_FEATURE_BITMAP_OFFSET)) { | |
81306e02 | 2092 | rv = st->ss->write_bitmap(st, di->fd, NodeNumUpdate); |
e97a7cd0 | 2093 | } else if (rv == 0 && |
fa601c2e | 2094 | md_feature_any_ppl_on(sb->feature_map)) { |
e97a7cd0 AP |
2095 | struct mdinfo info; |
2096 | ||
2097 | st->ss->getinfo_super(st, &info, NULL); | |
2098 | rv = st->ss->write_init_ppl(st, &info, di->fd); | |
2099 | } | |
2100 | ||
111d01fc NB |
2101 | close(di->fd); |
2102 | di->fd = -1; | |
4687f160 | 2103 | if (rv) |
2104 | goto error_out; | |
111d01fc | 2105 | } |
40114213 JS |
2106 | error_out: |
2107 | if (rv) | |
46a533a9 | 2108 | pr_err("Failed to write metadata to %s\n", di->devname); |
40114213 | 2109 | out: |
82d9eba6 NB |
2110 | return rv; |
2111 | } | |
2112 | ||
64557c33 | 2113 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
2114 | { |
2115 | /* | |
2116 | * return: | |
2117 | * 0 same, or first was empty, and second was copied | |
2118 | * 1 second had wrong number | |
2119 | * 2 wrong uuid | |
2120 | * 3 wrong other info | |
2121 | */ | |
64557c33 NB |
2122 | struct mdp_superblock_1 *first = st->sb; |
2123 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
2124 | |
2125 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
2126 | return 1; | |
2127 | if (second->major_version != __cpu_to_le32(1)) | |
2128 | return 1; | |
2129 | ||
2130 | if (!first) { | |
3c0bcd46 | 2131 | if (posix_memalign((void**)&first, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 2132 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
2133 | return 1; |
2134 | } | |
41226756 | 2135 | memcpy(first, second, SUPER1_SIZE); |
64557c33 | 2136 | st->sb = first; |
82d9eba6 NB |
2137 | return 0; |
2138 | } | |
2139 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
2140 | return 2; | |
2141 | ||
2142 | if (first->ctime != second->ctime || | |
2143 | first->level != second->level || | |
2144 | first->layout != second->layout || | |
2145 | first->size != second->size || | |
2146 | first->chunksize != second->chunksize || | |
2147 | first->raid_disks != second->raid_disks) | |
2148 | return 3; | |
2149 | return 0; | |
2150 | } | |
2151 | ||
3da92f27 | 2152 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 2153 | { |
5dd497ee | 2154 | unsigned long long dsize; |
82d9eba6 NB |
2155 | unsigned long long sb_offset; |
2156 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
2157 | int uuid[4]; |
2158 | struct bitmap_super_s *bsb; | |
bee8ec56 | 2159 | struct misc_dev_info *misc; |
308340aa | 2160 | struct align_fd afd; |
82d9eba6 | 2161 | |
3da92f27 | 2162 | free_super1(st); |
82d9eba6 | 2163 | |
308340aa JS |
2164 | init_afd(&afd, fd); |
2165 | ||
a17a3de3 | 2166 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 2167 | int bestvers = -1; |
23dc1ae8 | 2168 | struct supertype tst; |
570c0542 NB |
2169 | __u64 bestctime = 0; |
2170 | /* guess... choose latest ctime */ | |
ef609477 | 2171 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 | 2172 | tst.ss = &super1; |
46a533a9 JS |
2173 | for (tst.minor_version = 0; tst.minor_version <= 2; |
2174 | tst.minor_version++) { | |
3da92f27 NB |
2175 | switch(load_super1(&tst, fd, devname)) { |
2176 | case 0: super = tst.sb; | |
570c0542 NB |
2177 | if (bestvers == -1 || |
2178 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 2179 | bestvers = tst.minor_version; |
570c0542 NB |
2180 | bestctime = __le64_to_cpu(super->ctime); |
2181 | } | |
2182 | free(super); | |
3da92f27 | 2183 | tst.sb = NULL; |
570c0542 | 2184 | break; |
23dc1ae8 | 2185 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
2186 | case 2: break; /* bad, try next */ |
2187 | } | |
2188 | } | |
570c0542 NB |
2189 | if (bestvers != -1) { |
2190 | int rv; | |
23dc1ae8 NB |
2191 | tst.minor_version = bestvers; |
2192 | tst.ss = &super1; | |
911cead7 | 2193 | tst.max_devs = MAX_DEVS; |
3da92f27 | 2194 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
2195 | if (rv == 0) |
2196 | *st = tst; | |
570c0542 NB |
2197 | return rv; |
2198 | } | |
82d9eba6 NB |
2199 | return 2; |
2200 | } | |
beae1dfe NB |
2201 | if (!get_dev_size(fd, devname, &dsize)) |
2202 | return 1; | |
2203 | dsize >>= 9; | |
82d9eba6 | 2204 | |
5dd497ee | 2205 | if (dsize < 24) { |
82d9eba6 | 2206 | if (devname) |
e7b84f9d | 2207 | pr_err("%s is too small for md: size is %llu sectors.\n", |
5dd497ee | 2208 | devname, dsize); |
82d9eba6 NB |
2209 | return 1; |
2210 | } | |
2211 | ||
2212 | /* | |
2213 | * Calculate the position of the superblock. | |
2214 | * It is always aligned to a 4K boundary and | |
14263cf1 | 2215 | * depending on minor_version, it can be: |
82d9eba6 NB |
2216 | * 0: At least 8K, but less than 12K, from end of device |
2217 | * 1: At start of device | |
2218 | * 2: 4K from start of device. | |
2219 | */ | |
2220 | switch(st->minor_version) { | |
2221 | case 0: | |
5dd497ee | 2222 | sb_offset = dsize; |
82d9eba6 NB |
2223 | sb_offset -= 8*2; |
2224 | sb_offset &= ~(4*2-1); | |
2225 | break; | |
2226 | case 1: | |
2227 | sb_offset = 0; | |
2228 | break; | |
2229 | case 2: | |
2230 | sb_offset = 4*2; | |
2231 | break; | |
2232 | default: | |
2233 | return -EINVAL; | |
2234 | } | |
2235 | ||
82d9eba6 NB |
2236 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { |
2237 | if (devname) | |
e7b84f9d | 2238 | pr_err("Cannot seek to superblock on %s: %s\n", |
82d9eba6 NB |
2239 | devname, strerror(errno)); |
2240 | return 1; | |
2241 | } | |
2242 | ||
3c0bcd46 | 2243 | if (posix_memalign((void**)&super, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 2244 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
2245 | return 1; |
2246 | } | |
82d9eba6 | 2247 | |
1dcee1c9 JS |
2248 | memset(super, 0, SUPER1_SIZE); |
2249 | ||
308340aa | 2250 | if (aread(&afd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { |
82d9eba6 | 2251 | if (devname) |
e7b84f9d | 2252 | pr_err("Cannot read superblock on %s\n", |
82d9eba6 NB |
2253 | devname); |
2254 | free(super); | |
2255 | return 1; | |
2256 | } | |
2257 | ||
2258 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
2259 | if (devname) | |
e7b84f9d | 2260 | pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", |
46a533a9 JS |
2261 | devname, MD_SB_MAGIC, |
2262 | __le32_to_cpu(super->magic)); | |
82d9eba6 NB |
2263 | free(super); |
2264 | return 2; | |
2265 | } | |
2266 | ||
2267 | if (__le32_to_cpu(super->major_version) != 1) { | |
2268 | if (devname) | |
e7b84f9d | 2269 | pr_err("Cannot interpret superblock on %s - version is %d\n", |
82d9eba6 NB |
2270 | devname, __le32_to_cpu(super->major_version)); |
2271 | free(super); | |
2272 | return 2; | |
2273 | } | |
2274 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
2275 | if (devname) | |
e7b84f9d | 2276 | pr_err("No superblock found on %s (super_offset is wrong)\n", |
82d9eba6 NB |
2277 | devname); |
2278 | free(super); | |
2279 | return 2; | |
2280 | } | |
64557c33 | 2281 | st->sb = super; |
14263cf1 | 2282 | |
911cead7 | 2283 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
bee8ec56 | 2284 | |
46a533a9 JS |
2285 | misc = (struct misc_dev_info*) |
2286 | (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE); | |
bee8ec56 | 2287 | misc->device_size = dsize; |
23bf42cc N |
2288 | if (st->data_offset == INVALID_SECTORS) |
2289 | st->data_offset = __le64_to_cpu(super->data_offset); | |
bee8ec56 | 2290 | |
14263cf1 NB |
2291 | /* Now check on the bitmap superblock */ |
2292 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
2293 | return 0; | |
2294 | /* Read the bitmap superblock and make sure it looks | |
2295 | * valid. If it doesn't clear the bit. An --assemble --force | |
2296 | * should get that written out. | |
2297 | */ | |
b138214f | 2298 | locate_bitmap1(st, fd, 0); |
308340aa | 2299 | if (aread(&afd, bsb, 512) != 512) |
14263cf1 NB |
2300 | goto no_bitmap; |
2301 | ||
3da92f27 | 2302 | uuid_from_super1(st, uuid); |
14263cf1 NB |
2303 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
2304 | memcmp(bsb->uuid, uuid, 16) != 0) | |
2305 | goto no_bitmap; | |
2306 | return 0; | |
2307 | ||
2308 | no_bitmap: | |
c0c1acd6 N |
2309 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) |
2310 | & ~MD_FEATURE_BITMAP_OFFSET); | |
82d9eba6 NB |
2311 | return 0; |
2312 | } | |
2313 | ||
82d9eba6 NB |
2314 | static struct supertype *match_metadata_desc1(char *arg) |
2315 | { | |
503975b9 | 2316 | struct supertype *st = xcalloc(1, sizeof(*st)); |
82d9eba6 | 2317 | |
4dd2df09 | 2318 | st->container_devnm[0] = 0; |
82d9eba6 | 2319 | st->ss = &super1; |
911cead7 | 2320 | st->max_devs = MAX_DEVS; |
64557c33 | 2321 | st->sb = NULL; |
23bf42cc | 2322 | st->data_offset = INVALID_SECTORS; |
9b2a22d3 N |
2323 | /* leading zeros can be safely ignored. --detail generates them. */ |
2324 | while (*arg == '0') | |
2325 | arg++; | |
46a533a9 | 2326 | if (strcmp(arg, "1.0") == 0 || strcmp(arg, "1.00") == 0) { |
82d9eba6 NB |
2327 | st->minor_version = 0; |
2328 | return st; | |
2329 | } | |
46a533a9 | 2330 | if (strcmp(arg, "1.1") == 0 || strcmp(arg, "1.01") == 0 |
7d5c3964 | 2331 | ) { |
82d9eba6 NB |
2332 | st->minor_version = 1; |
2333 | return st; | |
2334 | } | |
9b2a22d3 | 2335 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 2336 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 2337 | strcmp(arg, "default") == 0 || |
26f467a9 | 2338 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 2339 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
2340 | st->minor_version = 2; |
2341 | return st; | |
2342 | } | |
46a533a9 | 2343 | if (strcmp(arg, "1") == 0 || strcmp(arg, "default") == 0) { |
a17a3de3 DL |
2344 | st->minor_version = -1; |
2345 | return st; | |
2346 | } | |
82d9eba6 NB |
2347 | |
2348 | free(st); | |
2349 | return NULL; | |
2350 | } | |
2351 | ||
34163fc7 NB |
2352 | /* find available size on device with this devsize, using |
2353 | * superblock type st, and reserving 'reserve' sectors for | |
2354 | * a possible bitmap | |
2355 | */ | |
641da745 N |
2356 | static __u64 avail_size1(struct supertype *st, __u64 devsize, |
2357 | unsigned long long data_offset) | |
82d9eba6 | 2358 | { |
2a528478 | 2359 | struct mdp_superblock_1 *super = st->sb; |
387fcd59 | 2360 | int bmspace = 0; |
23bf42cc | 2361 | int bbspace = 0; |
82d9eba6 NB |
2362 | if (devsize < 24) |
2363 | return 0; | |
2364 | ||
e97a7cd0 | 2365 | if (__le32_to_cpu(super->feature_map) & MD_FEATURE_BITMAP_OFFSET) { |
2a528478 N |
2366 | /* hot-add. allow for actual size of bitmap */ |
2367 | struct bitmap_super_s *bsb; | |
911cead7 | 2368 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
561ad559 | 2369 | bmspace = calc_bitmap_size(bsb, 4096) >> 9; |
fa601c2e | 2370 | } else if (md_feature_any_ppl_on(super->feature_map)) { |
e97a7cd0 | 2371 | bmspace = __le16_to_cpu(super->ppl.size); |
2a528478 | 2372 | } |
32141c17 | 2373 | |
88af981f | 2374 | /* Allow space for bad block log */ |
641da745 | 2375 | if (super->bblog_size) |
23bf42cc | 2376 | bbspace = __le16_to_cpu(super->bblog_size); |
21e92547 | 2377 | |
a380e275 N |
2378 | if (st->minor_version < 0) |
2379 | /* not specified, so time to set default */ | |
2380 | st->minor_version = 2; | |
387fcd59 | 2381 | |
23bf42cc N |
2382 | if (data_offset == INVALID_SECTORS) |
2383 | data_offset = st->data_offset; | |
2384 | ||
387fcd59 N |
2385 | if (data_offset != INVALID_SECTORS) |
2386 | switch(st->minor_version) { | |
2387 | case 0: | |
23bf42cc | 2388 | return devsize - data_offset - 8*2 - bbspace; |
387fcd59 N |
2389 | case 1: |
2390 | case 2: | |
2391 | return devsize - data_offset; | |
2392 | default: | |
2393 | return 0; | |
2394 | } | |
2395 | ||
2396 | devsize -= bmspace; | |
2397 | ||
34163fc7 NB |
2398 | switch(st->minor_version) { |
2399 | case 0: | |
1bf4e2d9 | 2400 | /* at end */ |
23bf42cc | 2401 | return ((devsize - 8*2 - bbspace ) & ~(4*2-1)); |
34163fc7 | 2402 | case 1: |
1bf4e2d9 | 2403 | /* at start, 4K for superblock and possible bitmap */ |
23bf42cc | 2404 | return devsize - 4*2 - bbspace; |
34163fc7 | 2405 | case 2: |
1bf4e2d9 | 2406 | /* 4k from start, 4K for superblock and possible bitmap */ |
23bf42cc | 2407 | return devsize - (4+4)*2 - bbspace; |
34163fc7 NB |
2408 | } |
2409 | return 0; | |
2410 | } | |
2411 | ||
1bf4e2d9 | 2412 | static int |
3da92f27 | 2413 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
2414 | int *chunkp, int delay, int write_behind, |
2415 | unsigned long long size, | |
21e92547 | 2416 | int may_change, int major) |
34163fc7 NB |
2417 | { |
2418 | /* | |
c0c1acd6 N |
2419 | * If not may_change, then this is a 'Grow' without sysfs support for |
2420 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
5c1dec3e | 2421 | * If may_change, then this is create or a Grow with sysfs support, |
c0c1acd6 | 2422 | * and we can put the bitmap wherever we like. |
34163fc7 | 2423 | * |
f9c25f1d | 2424 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
2425 | */ |
2426 | ||
1bf4e2d9 | 2427 | unsigned long long bits; |
199171a2 | 2428 | unsigned long long max_bits; |
34163fc7 | 2429 | unsigned long long min_chunk; |
199171a2 | 2430 | long offset; |
88af981f | 2431 | long bbl_offset, bbl_size; |
f21e18ca | 2432 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 2433 | int room = 0; |
c0c1acd6 | 2434 | int creating = 0; |
4b3eb4d2 | 2435 | int len; |
3da92f27 | 2436 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2437 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
3b7e9d0c | 2438 | int uuid[4]; |
34163fc7 | 2439 | |
c0c1acd6 | 2440 | if (__le64_to_cpu(sb->data_size) == 0) |
46a533a9 JS |
2441 | /* |
2442 | * Must be creating the array, else data_size | |
2443 | * would be non-zero | |
2444 | */ | |
c0c1acd6 | 2445 | creating = 1; |
199171a2 NB |
2446 | switch(st->minor_version) { |
2447 | case 0: | |
46a533a9 JS |
2448 | /* |
2449 | * either 3K after the superblock (when hot-add), | |
a31128d2 | 2450 | * or some amount of space before. |
199171a2 | 2451 | */ |
c0c1acd6 | 2452 | if (creating) { |
46a533a9 JS |
2453 | /* |
2454 | * We are creating array, so we *know* how much room has | |
199171a2 NB |
2455 | * been left. |
2456 | */ | |
2457 | offset = 0; | |
88af981f | 2458 | bbl_size = 8; |
46a533a9 JS |
2459 | room = |
2460 | choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; | |
199171a2 NB |
2461 | } else { |
2462 | room = __le64_to_cpu(sb->super_offset) | |
2463 | - __le64_to_cpu(sb->data_offset) | |
2464 | - __le64_to_cpu(sb->data_size); | |
88af981f N |
2465 | bbl_size = __le16_to_cpu(sb->bblog_size); |
2466 | if (bbl_size < 8) | |
2467 | bbl_size = 8; | |
2468 | bbl_offset = (__s32)__le32_to_cpu(sb->bblog_offset); | |
2469 | if (bbl_size < -bbl_offset) | |
2470 | bbl_size = -bbl_offset; | |
c0c1acd6 | 2471 | |
46a533a9 JS |
2472 | if (!may_change || |
2473 | (room < 3*2 && __le32_to_cpu(sb->max_dev) <= 384)) { | |
199171a2 NB |
2474 | room = 3*2; |
2475 | offset = 1*2; | |
88af981f | 2476 | bbl_size = 0; |
199171a2 NB |
2477 | } else { |
2478 | offset = 0; /* means movable offset */ | |
2479 | } | |
2480 | } | |
2481 | break; | |
2482 | case 1: | |
2483 | case 2: /* between superblock and data */ | |
c0c1acd6 | 2484 | if (creating) { |
199171a2 | 2485 | offset = 4*2; |
88af981f | 2486 | bbl_size = 8; |
46a533a9 JS |
2487 | room = |
2488 | choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; | |
199171a2 NB |
2489 | } else { |
2490 | room = __le64_to_cpu(sb->data_offset) | |
2491 | - __le64_to_cpu(sb->super_offset); | |
88af981f N |
2492 | bbl_size = __le16_to_cpu(sb->bblog_size); |
2493 | if (bbl_size) | |
46a533a9 JS |
2494 | room = |
2495 | __le32_to_cpu(sb->bblog_offset) + bbl_size; | |
88af981f N |
2496 | else |
2497 | bbl_size = 8; | |
2498 | ||
c0c1acd6 N |
2499 | if (!may_change) { |
2500 | room -= 2; /* Leave 1K for superblock */ | |
199171a2 | 2501 | offset = 2; |
88af981f | 2502 | bbl_size = 0; |
199171a2 | 2503 | } else { |
c0c1acd6 | 2504 | room -= 4*2; /* leave 4K for superblock */ |
199171a2 NB |
2505 | offset = 4*2; |
2506 | } | |
2507 | } | |
2508 | break; | |
ae491d1e | 2509 | default: |
2ec2b7e9 | 2510 | return -ENOSPC; |
199171a2 | 2511 | } |
1bf4e2d9 | 2512 | |
88af981f | 2513 | room -= bbl_size; |
199171a2 NB |
2514 | if (chunk == UnSet && room > 128*2) |
2515 | /* Limit to 128K of bitmap when chunk size not requested */ | |
2516 | room = 128*2; | |
1bf4e2d9 | 2517 | |
268cccac N |
2518 | if (room <= 1) |
2519 | /* No room for a bitmap */ | |
2ec2b7e9 | 2520 | return -ENOSPC; |
268cccac | 2521 | |
199171a2 | 2522 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
2523 | |
2524 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 2525 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
2526 | while (bits > max_bits) { |
2527 | min_chunk *= 2; | |
2528 | bits = (bits+1)/2; | |
2529 | } | |
b8ab2a50 N |
2530 | if (chunk == UnSet) { |
2531 | /* For practical purpose, 64Meg is a good | |
2532 | * default chunk size for internal bitmaps. | |
2533 | */ | |
34163fc7 | 2534 | chunk = min_chunk; |
b8ab2a50 N |
2535 | if (chunk < 64*1024*1024) |
2536 | chunk = 64*1024*1024; | |
2537 | } else if (chunk < min_chunk) | |
2ec2b7e9 | 2538 | return -EINVAL; /* chunk size too small */ |
21e92547 | 2539 | if (chunk == 0) /* rounding problem */ |
2ec2b7e9 | 2540 | return -EINVAL; |
34163fc7 | 2541 | |
199171a2 | 2542 | if (offset == 0) { |
a31128d2 N |
2543 | /* start bitmap on a 4K boundary with enough space for |
2544 | * the bitmap | |
2545 | */ | |
199171a2 | 2546 | bits = (size*512) / chunk + 1; |
a31128d2 N |
2547 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
2548 | room *= 8; /* convert 4K blocks to sectors */ | |
88af981f | 2549 | offset = -room - bbl_size; |
199171a2 NB |
2550 | } |
2551 | ||
34a13953 | 2552 | sb->bitmap_offset = (int32_t)__cpu_to_le32(offset); |
34163fc7 | 2553 | |
46a533a9 JS |
2554 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | |
2555 | MD_FEATURE_BITMAP_OFFSET); | |
29e766a5 | 2556 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 2557 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 2558 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
2559 | uuid_from_super1(st, uuid); |
2560 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
2561 | bms->chunksize = __cpu_to_le32(chunk); |
2562 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 2563 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 | 2564 | bms->write_behind = __cpu_to_le32(write_behind); |
529e2aa5 | 2565 | bms->nodes = __cpu_to_le32(st->nodes); |
6d9c7c25 | 2566 | if (st->nodes) |
46a533a9 JS |
2567 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | |
2568 | MD_FEATURE_BITMAP_VERSIONED); | |
4b3eb4d2 JS |
2569 | if (st->cluster_name) { |
2570 | len = sizeof(bms->cluster_name); | |
2571 | strncpy((char *)bms->cluster_name, st->cluster_name, len); | |
2572 | bms->cluster_name[len - 1] = '\0'; | |
2573 | } | |
34163fc7 | 2574 | |
199171a2 | 2575 | *chunkp = chunk; |
2ec2b7e9 | 2576 | return 0; |
34163fc7 NB |
2577 | } |
2578 | ||
b138214f | 2579 | static int locate_bitmap1(struct supertype *st, int fd, int node_num) |
34163fc7 | 2580 | { |
34163fc7 | 2581 | unsigned long long offset; |
1e0d770c NB |
2582 | struct mdp_superblock_1 *sb; |
2583 | int mustfree = 0; | |
53e76b1d | 2584 | int ret; |
34163fc7 | 2585 | |
3da92f27 NB |
2586 | if (!st->sb) { |
2587 | if (st->ss->load_super(st, fd, NULL)) | |
53e76b1d | 2588 | return -1; /* no error I hope... */ |
1e0d770c NB |
2589 | mustfree = 1; |
2590 | } | |
3da92f27 | 2591 | sb = st->sb; |
e478dc86 | 2592 | |
53e76b1d GJ |
2593 | if ((__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) |
2594 | ret = 0; | |
2595 | else | |
2596 | ret = -1; | |
1bf4e2d9 | 2597 | offset = __le64_to_cpu(sb->super_offset); |
b138214f | 2598 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset) * (node_num + 1); |
1e0d770c | 2599 | if (mustfree) |
f6d75de8 | 2600 | free(sb); |
1bf4e2d9 | 2601 | lseek64(fd, offset<<9, 0); |
53e76b1d | 2602 | return ret; |
34163fc7 NB |
2603 | } |
2604 | ||
0aa2f15b | 2605 | static int write_bitmap1(struct supertype *st, int fd, enum bitmap_update update) |
34163fc7 | 2606 | { |
3da92f27 | 2607 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2608 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
34163fc7 | 2609 | int rv = 0; |
d669228f | 2610 | void *buf; |
4b3eb4d2 | 2611 | int towrite, n, len; |
308340aa | 2612 | struct align_fd afd; |
95a05b37 | 2613 | unsigned int i = 0; |
7e6e839a | 2614 | unsigned long long total_bm_space, bm_space_per_node; |
308340aa | 2615 | |
0aa2f15b GJ |
2616 | switch (update) { |
2617 | case NameUpdate: | |
2618 | /* update cluster name */ | |
2619 | if (st->cluster_name) { | |
4b3eb4d2 JS |
2620 | len = sizeof(bms->cluster_name); |
2621 | memset((char *)bms->cluster_name, 0, len); | |
2622 | strncpy((char *)bms->cluster_name, | |
2623 | st->cluster_name, len); | |
2624 | bms->cluster_name[len - 1] = '\0'; | |
0aa2f15b GJ |
2625 | } |
2626 | break; | |
7e6e839a GJ |
2627 | case NodeNumUpdate: |
2628 | /* cluster md only supports superblock 1.2 now */ | |
46a533a9 JS |
2629 | if (st->minor_version != 2 && |
2630 | bms->version == BITMAP_MAJOR_CLUSTERED) { | |
7e6e839a GJ |
2631 | pr_err("Warning: cluster md only works with superblock 1.2\n"); |
2632 | return -EINVAL; | |
2633 | } | |
2634 | ||
45a87c2f | 2635 | if (bms->version == BITMAP_MAJOR_CLUSTERED) { |
9d67f649 | 2636 | if (__cpu_to_le32(st->nodes) < bms->nodes) { |
46a533a9 JS |
2637 | /* |
2638 | * Since the nodes num is not increased, no | |
2639 | * need to check the space enough or not, | |
2640 | * just update bms->nodes | |
2641 | */ | |
45a87c2f GJ |
2642 | bms->nodes = __cpu_to_le32(st->nodes); |
2643 | break; | |
2644 | } | |
2645 | } else { | |
46a533a9 JS |
2646 | /* |
2647 | * no need to change bms->nodes for other | |
2648 | * bitmap types | |
2649 | */ | |
45a87c2f GJ |
2650 | if (st->nodes) |
2651 | pr_err("Warning: --nodes option is only suitable for clustered bitmap\n"); | |
2652 | break; | |
261b57fe GJ |
2653 | } |
2654 | ||
46a533a9 JS |
2655 | /* |
2656 | * Each node has an independent bitmap, it is necessary to | |
2657 | * calculate the space is enough or not, first get how many | |
2658 | * bytes for the total bitmap | |
2659 | */ | |
7e6e839a GJ |
2660 | bm_space_per_node = calc_bitmap_size(bms, 4096); |
2661 | ||
46a533a9 JS |
2662 | total_bm_space = 512 * (__le64_to_cpu(sb->data_offset) - |
2663 | __le64_to_cpu(sb->super_offset)); | |
2664 | /* leave another 4k for superblock */ | |
2665 | total_bm_space = total_bm_space - 4096; | |
7e6e839a GJ |
2666 | |
2667 | if (bm_space_per_node * st->nodes > total_bm_space) { | |
2668 | pr_err("Warning: The max num of nodes can't exceed %llu\n", | |
2669 | total_bm_space / bm_space_per_node); | |
2670 | return -ENOMEM; | |
2671 | } | |
2672 | ||
2673 | bms->nodes = __cpu_to_le32(st->nodes); | |
2674 | break; | |
0aa2f15b GJ |
2675 | case NoUpdate: |
2676 | default: | |
2677 | break; | |
2678 | } | |
2679 | ||
308340aa | 2680 | init_afd(&afd, fd); |
34163fc7 | 2681 | |
b138214f | 2682 | locate_bitmap1(st, fd, 0); |
34163fc7 | 2683 | |
d669228f JS |
2684 | if (posix_memalign(&buf, 4096, 4096)) |
2685 | return -ENOMEM; | |
2686 | ||
95a05b37 GJ |
2687 | do { |
2688 | /* Only the bitmap[0] should resync | |
2689 | * whole device on initial assembly | |
2690 | */ | |
2691 | if (i) | |
2692 | memset(buf, 0x00, 4096); | |
34163fc7 | 2693 | else |
95a05b37 GJ |
2694 | memset(buf, 0xff, 4096); |
2695 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); | |
2696 | ||
119b66a4 GJ |
2697 | /* |
2698 | * use 4096 boundary if bitmap_offset is aligned | |
2699 | * with 8 sectors, then it should compatible with | |
2700 | * older mdadm. | |
2701 | */ | |
2702 | if (__le32_to_cpu(sb->bitmap_offset) & 7) | |
2703 | towrite = calc_bitmap_size(bms, 512); | |
2704 | else | |
2705 | towrite = calc_bitmap_size(bms, 4096); | |
95a05b37 GJ |
2706 | while (towrite > 0) { |
2707 | n = towrite; | |
2708 | if (n > 4096) | |
2709 | n = 4096; | |
2710 | n = awrite(&afd, buf, n); | |
2711 | if (n > 0) | |
2712 | towrite -= n; | |
2713 | else | |
2714 | break; | |
2715 | if (i) | |
2716 | memset(buf, 0x00, 4096); | |
2717 | else | |
2718 | memset(buf, 0xff, 4096); | |
2719 | } | |
2720 | fsync(fd); | |
2721 | if (towrite) { | |
2722 | rv = -2; | |
34163fc7 | 2723 | break; |
95a05b37 GJ |
2724 | } |
2725 | } while (++i < __le32_to_cpu(bms->nodes)); | |
34163fc7 | 2726 | |
d669228f | 2727 | free(buf); |
34163fc7 | 2728 | return rv; |
82d9eba6 NB |
2729 | } |
2730 | ||
3da92f27 | 2731 | static void free_super1(struct supertype *st) |
df37ffc0 | 2732 | { |
d15a1f72 | 2733 | |
3da92f27 NB |
2734 | if (st->sb) |
2735 | free(st->sb); | |
1cc7f4fe N |
2736 | while (st->info) { |
2737 | struct devinfo *di = st->info; | |
2738 | st->info = di->next; | |
2739 | if (di->fd >= 0) | |
2740 | close(di->fd); | |
2741 | free(di); | |
2742 | } | |
3da92f27 | 2743 | st->sb = NULL; |
df37ffc0 NB |
2744 | } |
2745 | ||
17f25ca6 NB |
2746 | static int validate_geometry1(struct supertype *st, int level, |
2747 | int layout, int raiddisks, | |
c21e737b | 2748 | int *chunk, unsigned long long size, |
af4348dd | 2749 | unsigned long long data_offset, |
2c514b71 | 2750 | char *subdev, unsigned long long *freesize, |
5308f117 | 2751 | int consistency_policy, int verbose) |
17f25ca6 | 2752 | { |
641da745 N |
2753 | unsigned long long ldsize, devsize; |
2754 | int bmspace; | |
23bf42cc | 2755 | unsigned long long headroom; |
2cf04330 | 2756 | unsigned long long overhead; |
17f25ca6 NB |
2757 | int fd; |
2758 | ||
b42f577a N |
2759 | if (level == LEVEL_CONTAINER) { |
2760 | if (verbose) | |
e7b84f9d | 2761 | pr_err("1.x metadata does not support containers\n"); |
17f25ca6 | 2762 | return 0; |
b42f577a | 2763 | } |
7ccc4cc4 | 2764 | if (*chunk == UnSet) |
bb7295f1 N |
2765 | *chunk = DEFAULT_CHUNK; |
2766 | ||
17f25ca6 NB |
2767 | if (!subdev) |
2768 | return 1; | |
2769 | ||
23bf42cc N |
2770 | if (st->minor_version < 0) |
2771 | /* not specified, so time to set default */ | |
2772 | st->minor_version = 2; | |
2773 | ||
17f25ca6 NB |
2774 | fd = open(subdev, O_RDONLY|O_EXCL, 0); |
2775 | if (fd < 0) { | |
2c514b71 | 2776 | if (verbose) |
e7b84f9d | 2777 | pr_err("super1.x cannot open %s: %s\n", |
2c514b71 | 2778 | subdev, strerror(errno)); |
17f25ca6 NB |
2779 | return 0; |
2780 | } | |
2c514b71 | 2781 | |
17f25ca6 NB |
2782 | if (!get_dev_size(fd, subdev, &ldsize)) { |
2783 | close(fd); | |
2784 | return 0; | |
2785 | } | |
2786 | close(fd); | |
2787 | ||
641da745 | 2788 | devsize = ldsize >> 9; |
641da745 | 2789 | |
e97a7cd0 | 2790 | /* creating: allow suitable space for bitmap or PPL */ |
fa601c2e PB |
2791 | if (consistency_policy == CONSISTENCY_POLICY_PPL) |
2792 | bmspace = MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9; | |
2793 | else | |
2794 | bmspace = choose_bm_space(devsize); | |
641da745 | 2795 | |
23bf42cc N |
2796 | if (data_offset == INVALID_SECTORS) |
2797 | data_offset = st->data_offset; | |
2798 | if (data_offset == INVALID_SECTORS) | |
2799 | switch (st->minor_version) { | |
641da745 | 2800 | case 0: |
23bf42cc N |
2801 | data_offset = 0; |
2802 | break; | |
641da745 N |
2803 | case 1: |
2804 | case 2: | |
23bf42cc N |
2805 | /* Choose data offset appropriate for this device |
2806 | * and use as default for whole array. | |
2807 | * The data_offset must allow for bitmap space | |
2808 | * and base metadata, should allow for some headroom | |
2809 | * for reshape, and should be rounded to multiple | |
2810 | * of 1M. | |
2811 | * Headroom is limited to 128M, but aim for about 0.1% | |
641da745 | 2812 | */ |
23bf42cc | 2813 | headroom = 128*1024*2; |
641da745 N |
2814 | while ((headroom << 10) > devsize && |
2815 | (*chunk == 0 || | |
2816 | headroom / 2 >= ((unsigned)(*chunk)*2)*2)) | |
2817 | headroom >>= 1; | |
23bf42cc N |
2818 | data_offset = 12*2 + bmspace + headroom; |
2819 | #define ONE_MEG (2*1024) | |
795bd44e | 2820 | data_offset = ROUND_UP(data_offset, ONE_MEG); |
641da745 N |
2821 | break; |
2822 | } | |
23bf42cc N |
2823 | if (st->data_offset == INVALID_SECTORS) |
2824 | st->data_offset = data_offset; | |
2825 | switch(st->minor_version) { | |
2826 | case 0: /* metadata at end. Round down and subtract space to reserve */ | |
2827 | devsize = (devsize & ~(4ULL*2-1)); | |
e97a7cd0 | 2828 | /* space for metadata, bblog, bitmap/ppl */ |
2cf04330 DF |
2829 | overhead = 8*2 + 8 + bmspace; |
2830 | if (devsize < overhead) /* detect underflow */ | |
2831 | goto dev_too_small_err; | |
2832 | devsize -= overhead; | |
23bf42cc N |
2833 | break; |
2834 | case 1: | |
2835 | case 2: | |
2cf04330 DF |
2836 | if (devsize < data_offset) /* detect underflow */ |
2837 | goto dev_too_small_err; | |
23bf42cc N |
2838 | devsize -= data_offset; |
2839 | break; | |
641da745 | 2840 | } |
23bf42cc | 2841 | *freesize = devsize; |
17f25ca6 | 2842 | return 1; |
2cf04330 DF |
2843 | |
2844 | /* Error condition, device cannot even hold the overhead. */ | |
2845 | dev_too_small_err: | |
2846 | fprintf(stderr, "device %s is too small (%lluK) for " | |
2847 | "required metadata!\n", subdev, devsize>>1); | |
2848 | *freesize = 0; | |
2849 | return 0; | |
17f25ca6 NB |
2850 | } |
2851 | ||
afa368f4 N |
2852 | void *super1_make_v0(struct supertype *st, struct mdinfo *info, mdp_super_t *sb0) |
2853 | { | |
2854 | /* Create a v1.0 superblock based on 'info'*/ | |
2855 | void *ret; | |
2856 | struct mdp_superblock_1 *sb; | |
2857 | int i; | |
afa368f4 N |
2858 | unsigned long long offset; |
2859 | ||
2860 | if (posix_memalign(&ret, 4096, 1024) != 0) | |
2861 | return NULL; | |
2862 | sb = ret; | |
2863 | memset(ret, 0, 1024); | |
2864 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); | |
2865 | sb->major_version = __cpu_to_le32(1); | |
2866 | ||
2867 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); | |
2868 | sprintf(sb->set_name, "%d", sb0->md_minor); | |
2869 | sb->ctime = __cpu_to_le32(info->array.ctime+1); | |
2870 | sb->level = __cpu_to_le32(info->array.level); | |
2871 | sb->layout = __cpu_to_le32(info->array.layout); | |
2872 | sb->size = __cpu_to_le64(info->component_size); | |
2873 | sb->chunksize = __cpu_to_le32(info->array.chunk_size/512); | |
2874 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); | |
ccec2685 N |
2875 | if (info->array.level > 0) |
2876 | sb->data_size = sb->size; | |
2877 | else | |
2878 | sb->data_size = st->ss->avail_size(st, st->devsize/512, 0); | |
afa368f4 N |
2879 | sb->resync_offset = MaxSector; |
2880 | sb->max_dev = __cpu_to_le32(MD_SB_DISKS); | |
2881 | sb->dev_number = __cpu_to_le32(info->disk.number); | |
2882 | sb->utime = __cpu_to_le64(info->array.utime); | |
2883 | ||
2884 | offset = st->devsize/512 - 8*2; | |
2885 | offset &= ~(4*2-1); | |
2886 | sb->super_offset = __cpu_to_le64(offset); | |
2887 | //*(__u64*)(st->other + 128 + 8 + 8) = __cpu_to_le64(offset); | |
2888 | ||
c5f71c24 | 2889 | random_uuid(sb->device_uuid); |
afa368f4 N |
2890 | |
2891 | for (i = 0; i < MD_SB_DISKS; i++) { | |
2892 | int state = sb0->disks[i].state; | |
fa7574f6 | 2893 | sb->dev_roles[i] = MD_DISK_ROLE_SPARE; |
afa368f4 N |
2894 | if ((state & (1<<MD_DISK_SYNC)) && |
2895 | !(state & (1<<MD_DISK_FAULTY))) | |
2896 | sb->dev_roles[i] = __cpu_to_le16(sb0->disks[i].raid_disk); | |
2897 | } | |
2898 | sb->sb_csum = calc_sb_1_csum(sb); | |
2899 | return ret; | |
2900 | } | |
2901 | ||
82d9eba6 NB |
2902 | struct superswitch super1 = { |
2903 | .examine_super = examine_super1, | |
2904 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 2905 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
2906 | .detail_super = detail_super1, |
2907 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 2908 | .export_detail_super = export_detail_super1, |
111d01fc | 2909 | .write_init_super = write_init_super1, |
0e600426 N |
2910 | .validate_geometry = validate_geometry1, |
2911 | .add_to_super = add_to_super1, | |
6d388a88 | 2912 | .examine_badblocks = examine_badblocks_super1, |
74db60b0 | 2913 | .copy_metadata = copy_metadata1, |
e97a7cd0 | 2914 | .write_init_ppl = write_init_ppl1, |
83b6208e | 2915 | .match_home = match_home1, |
82d9eba6 NB |
2916 | .uuid_from_super = uuid_from_super1, |
2917 | .getinfo_super = getinfo_super1, | |
00bbdbda | 2918 | .container_content = container_content1, |
82d9eba6 | 2919 | .update_super = update_super1, |
82d9eba6 | 2920 | .init_super = init_super1, |
82d9eba6 | 2921 | .store_super = store_super1, |
82d9eba6 NB |
2922 | .compare_super = compare_super1, |
2923 | .load_super = load_super1, | |
2924 | .match_metadata_desc = match_metadata_desc1, | |
2925 | .avail_size = avail_size1, | |
34163fc7 NB |
2926 | .add_internal_bitmap = add_internal_bitmap1, |
2927 | .locate_bitmap = locate_bitmap1, | |
2928 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 2929 | .free_super = free_super1, |
f277ce36 NB |
2930 | #if __BYTE_ORDER == BIG_ENDIAN |
2931 | .swapuuid = 0, | |
2932 | #else | |
2933 | .swapuuid = 1, | |
2934 | #endif | |
31015d57 | 2935 | .name = "1.x", |
82d9eba6 | 2936 | }; |