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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 */ | |
46 | __u32 layout; /* only for raid5 currently */ | |
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 | */ | |
92 | __u8 bblog_shift; /* shift from sectors to block size for badblocklist */ | |
93 | __u16 bblog_size; /* number of sectors reserved for badblocklist */ | |
94 | __u32 bblog_offset; /* sector offset from superblock to bblog, signed */ | |
82d9eba6 NB |
95 | |
96 | /* array state information - 64 bytes */ | |
97 | __u64 utime; /* 40 bits second, 24 btes microseconds */ | |
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 | ||
d2cd3ffc NB |
124 | /* feature_map bits */ |
125 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
126 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
127 | * must be honoured | |
128 | */ | |
b674b5b8 | 129 | #define MD_FEATURE_RESHAPE_ACTIVE 4 |
bf95d0f3 | 130 | #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */ |
8fe1c44f N |
131 | #define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an |
132 | * active device with same 'role'. | |
133 | * 'recovery_offset' is also set. | |
134 | */ | |
135 | #define MD_FEATURE_RESHAPE_BACKWARDS 32 /* Reshape doesn't change number | |
136 | * of devices, but is going | |
137 | * backwards anyway. | |
138 | */ | |
139 | #define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */ | |
6d9c7c25 | 140 | #define MD_FEATURE_BITMAP_VERSIONED 256 /* bitmap version number checked properly */ |
ed94976d | 141 | #define MD_FEATURE_JOURNAL 512 /* support write journal */ |
e97a7cd0 | 142 | #define MD_FEATURE_PPL 1024 /* support PPL */ |
8fe1c44f N |
143 | #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \ |
144 | |MD_FEATURE_RECOVERY_OFFSET \ | |
145 | |MD_FEATURE_RESHAPE_ACTIVE \ | |
146 | |MD_FEATURE_BAD_BLOCKS \ | |
147 | |MD_FEATURE_REPLACEMENT \ | |
148 | |MD_FEATURE_RESHAPE_BACKWARDS \ | |
149 | |MD_FEATURE_NEW_OFFSET \ | |
6d9c7c25 | 150 | |MD_FEATURE_BITMAP_VERSIONED \ |
ed94976d | 151 | |MD_FEATURE_JOURNAL \ |
e97a7cd0 | 152 | |MD_FEATURE_PPL \ |
8fe1c44f | 153 | ) |
69a48116 SL |
154 | |
155 | static int role_from_sb(struct mdp_superblock_1 *sb) | |
156 | { | |
157 | unsigned int d; | |
158 | int role; | |
159 | ||
160 | d = __le32_to_cpu(sb->dev_number); | |
161 | if (d < __le32_to_cpu(sb->max_dev)) | |
162 | role = __le16_to_cpu(sb->dev_roles[d]); | |
163 | else | |
164 | role = MD_DISK_ROLE_SPARE; | |
165 | return role; | |
166 | } | |
d2cd3ffc | 167 | |
7e6e839a GJ |
168 | /* return how many bytes are needed for bitmap, for cluster-md each node |
169 | * should have it's own bitmap */ | |
170 | static unsigned int calc_bitmap_size(bitmap_super_t *bms, unsigned int boundary) | |
171 | { | |
172 | unsigned long long bits, bytes; | |
173 | ||
561ad559 AP |
174 | bits = bitmap_bits(__le64_to_cpu(bms->sync_size), |
175 | __le32_to_cpu(bms->chunksize)); | |
7e6e839a GJ |
176 | bytes = (bits+7) >> 3; |
177 | bytes += sizeof(bitmap_super_t); | |
178 | bytes = ROUND_UP(bytes, boundary); | |
179 | ||
180 | return bytes; | |
181 | } | |
182 | ||
82d9eba6 NB |
183 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
184 | { | |
185 | unsigned int disk_csum, csum; | |
186 | unsigned long long newcsum; | |
187 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
188 | unsigned int *isuper = (unsigned int*)sb; | |
82d9eba6 NB |
189 | |
190 | /* make sure I can count... */ | |
191 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
192 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
193 | sizeof(struct mdp_superblock_1) != 256) { | |
194 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
195 | } | |
196 | ||
197 | disk_csum = sb->sb_csum; | |
198 | sb->sb_csum = 0; | |
199 | newcsum = 0; | |
e4c72d1d | 200 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
201 | newcsum += __le32_to_cpu(*isuper); |
202 | isuper++; | |
203 | } | |
82d9eba6 NB |
204 | |
205 | if (size == 2) | |
206 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
207 | ||
208 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
209 | sb->sb_csum = disk_csum; | |
83205b64 | 210 | return __cpu_to_le32(csum); |
82d9eba6 NB |
211 | } |
212 | ||
308340aa JS |
213 | /* |
214 | * Information related to file descriptor used for aligned reads/writes. | |
215 | * Cache the block size. | |
216 | */ | |
217 | struct align_fd { | |
218 | int fd; | |
219 | int blk_sz; | |
220 | }; | |
221 | ||
222 | static void init_afd(struct align_fd *afd, int fd) | |
223 | { | |
224 | afd->fd = fd; | |
32971509 | 225 | if (!get_dev_sector_size(afd->fd, NULL, (unsigned int *)&afd->blk_sz)) |
308340aa JS |
226 | afd->blk_sz = 512; |
227 | } | |
228 | ||
5ea022a1 | 229 | static char abuf[4096+4096]; |
308340aa | 230 | static int aread(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
231 | { |
232 | /* aligned read. | |
233 | * On devices with a 4K sector size, we need to read | |
234 | * the full sector and copy relevant bits into | |
235 | * the buffer | |
236 | */ | |
6ef89052 | 237 | int bsize, iosize; |
5ea022a1 N |
238 | char *b; |
239 | int n; | |
6ef89052 | 240 | |
308340aa JS |
241 | bsize = afd->blk_sz; |
242 | ||
243 | if (!bsize || bsize > 4096 || len > 4096) { | |
244 | if (!bsize) | |
7a862a02 | 245 | fprintf(stderr, "WARNING - aread() called with invalid block size\n"); |
5ea022a1 | 246 | return -1; |
308340aa | 247 | } |
0a2f1894 | 248 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 249 | |
6ef89052 N |
250 | for (iosize = 0; iosize < len; iosize += bsize) |
251 | ; | |
308340aa | 252 | n = read(afd->fd, b, iosize); |
5ea022a1 N |
253 | if (n <= 0) |
254 | return n; | |
308340aa | 255 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
256 | if (n > len) |
257 | n = len; | |
258 | memcpy(buf, b, n); | |
259 | return n; | |
260 | } | |
261 | ||
308340aa | 262 | static int awrite(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
263 | { |
264 | /* aligned write. | |
265 | * On devices with a 4K sector size, we need to write | |
266 | * the full sector. We pre-read if the sector is larger | |
267 | * than the write. | |
268 | * The address must be sector-aligned. | |
269 | */ | |
6ef89052 | 270 | int bsize, iosize; |
5ea022a1 N |
271 | char *b; |
272 | int n; | |
308340aa JS |
273 | |
274 | bsize = afd->blk_sz; | |
275 | if (!bsize || bsize > 4096 || len > 4096) { | |
276 | if (!bsize) | |
7a862a02 | 277 | fprintf(stderr, "WARNING - awrite() called with invalid block size\n"); |
5ea022a1 | 278 | return -1; |
308340aa | 279 | } |
0a2f1894 | 280 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 281 | |
6ef89052 N |
282 | for (iosize = 0; iosize < len ; iosize += bsize) |
283 | ; | |
284 | ||
285 | if (len != iosize) { | |
308340aa | 286 | n = read(afd->fd, b, iosize); |
6ef89052 N |
287 | if (n <= 0) |
288 | return n; | |
308340aa | 289 | lseek(afd->fd, -n, 1); |
6ef89052 N |
290 | } |
291 | ||
5ea022a1 | 292 | memcpy(b, buf, len); |
308340aa | 293 | n = write(afd->fd, b, iosize); |
5ea022a1 N |
294 | if (n <= 0) |
295 | return n; | |
308340aa | 296 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
297 | return len; |
298 | } | |
299 | ||
e97a7cd0 AP |
300 | static inline unsigned int choose_ppl_space(int chunk) |
301 | { | |
302 | return (PPL_HEADER_SIZE >> 9) + (chunk > 128*2 ? chunk : 128*2); | |
303 | } | |
304 | ||
3da92f27 | 305 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 306 | { |
3da92f27 | 307 | struct mdp_superblock_1 *sb = st->sb; |
0aa2f15b | 308 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
82d9eba6 | 309 | time_t atime; |
f21e18ca | 310 | unsigned int d; |
e8e1c176 | 311 | int role; |
4180aa4d | 312 | int delta_extra = 0; |
82d9eba6 NB |
313 | int i; |
314 | char *c; | |
a1cbd7d0 | 315 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 316 | int layout; |
a17a3de3 | 317 | unsigned long long sb_offset; |
5e1863d4 | 318 | struct mdinfo info; |
82d9eba6 NB |
319 | |
320 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
321 | printf(" Version : 1"); |
322 | sb_offset = __le64_to_cpu(sb->super_offset); | |
323 | if (sb_offset <= 4) | |
324 | printf(".1\n"); | |
325 | else if (sb_offset <= 8) | |
326 | printf(".2\n"); | |
327 | else | |
328 | printf(".0\n"); | |
91eedefc | 329 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
330 | printf(" Array UUID : "); |
331 | for (i=0; i<16; i++) { | |
82d9eba6 | 332 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 333 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
334 | } |
335 | printf("\n"); | |
a1cbd7d0 NB |
336 | printf(" Name : %.32s", sb->set_name); |
337 | if (l > 0 && l < 32 && | |
338 | sb->set_name[l] == ':' && | |
339 | strncmp(sb->set_name, homehost, l) == 0) | |
340 | printf(" (local to host %s)", homehost); | |
341 | printf("\n"); | |
8b2202de | 342 | if (bms->nodes > 0 && (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) |
2cf42394 | 343 | printf(" Cluster Name : %-64s\n", bms->cluster_name); |
82d9eba6 NB |
344 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
345 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
346 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
347 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
348 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
349 | printf("\n"); | |
5cda0964 | 350 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
351 | (unsigned long long)__le64_to_cpu(sb->data_size), |
352 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 353 | if (__le32_to_cpu(sb->level) > 0) { |
d4633e06 | 354 | int ddsks = 0, ddsks_denom = 1; |
b674b5b8 NB |
355 | switch(__le32_to_cpu(sb->level)) { |
356 | case 1: ddsks=1;break; | |
357 | case 4: | |
83205b64 NB |
358 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
359 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
360 | case 10: | |
361 | layout = __le32_to_cpu(sb->layout); | |
d4633e06 N |
362 | ddsks = __le32_to_cpu(sb->raid_disks); |
363 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
b674b5b8 | 364 | } |
d4633e06 N |
365 | if (ddsks) { |
366 | long long asize = __le64_to_cpu(sb->size); | |
367 | asize = (asize << 9) * ddsks / ddsks_denom; | |
83205b64 | 368 | printf(" Array Size : %llu%s\n", |
d4633e06 N |
369 | asize >> 10, human_size(asize)); |
370 | } | |
b674b5b8 | 371 | if (sb->size != sb->data_size) |
5cda0964 | 372 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
373 | (unsigned long long)__le64_to_cpu(sb->size), |
374 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 375 | } |
82d9eba6 | 376 | if (sb->data_offset) |
199171a2 NB |
377 | printf(" Data Offset : %llu sectors\n", |
378 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
8772113a N |
379 | if (sb->new_offset && |
380 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) { | |
8fe1c44f N |
381 | unsigned long long offset = __le64_to_cpu(sb->data_offset); |
382 | offset += (signed)(int32_t)__le32_to_cpu(sb->new_offset); | |
383 | printf(" New Offset : %llu sectors\n", offset); | |
384 | } | |
199171a2 NB |
385 | printf(" Super Offset : %llu sectors\n", |
386 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc NB |
387 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
388 | printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
5e1863d4 N |
389 | |
390 | st->ss->getinfo_super(st, &info, NULL); | |
391 | if (info.space_after != 1 && | |
392 | !(__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) | |
393 | printf(" Unused Space : before=%llu sectors, after=%llu sectors\n", | |
394 | info.space_before, info.space_after); | |
395 | ||
a3fd117c | 396 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
397 | printf(" Device UUID : "); |
398 | for (i=0; i<16; i++) { | |
82d9eba6 | 399 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 400 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
401 | } |
402 | printf("\n"); | |
b674b5b8 | 403 | printf("\n"); |
91eedefc NB |
404 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
405 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 406 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
e97a7cd0 AP |
407 | } else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) { |
408 | printf(" PPL : %u sectors at offset %d sectors from superblock\n", | |
409 | __le16_to_cpu(sb->ppl.size), | |
410 | __le16_to_cpu(sb->ppl.offset)); | |
8fac0577 | 411 | } |
bf95d0f3 | 412 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 413 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
414 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
415 | if (__le32_to_cpu(sb->delta_disks)) { | |
416 | printf(" Delta Devices : %d", __le32_to_cpu(sb->delta_disks)); | |
4180aa4d N |
417 | printf(" (%d->%d)\n", |
418 | __le32_to_cpu(sb->raid_disks)-__le32_to_cpu(sb->delta_disks), | |
419 | __le32_to_cpu(sb->raid_disks)); | |
420 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
421 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
422 | } |
423 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
424 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
425 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
426 | } | |
427 | if (__le32_to_cpu(sb->new_layout) != __le32_to_cpu(sb->layout)) { | |
428 | if (__le32_to_cpu(sb->level) == 5) { | |
429 | c = map_num(r5layout, __le32_to_cpu(sb->new_layout)); | |
430 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
431 | } | |
fe77a154 N |
432 | if (__le32_to_cpu(sb->level) == 6) { |
433 | c = map_num(r6layout, __le32_to_cpu(sb->new_layout)); | |
434 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
435 | } | |
b674b5b8 | 436 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
437 | printf(" New Layout :"); |
438 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
439 | printf("\n"); | |
b674b5b8 NB |
440 | } |
441 | } | |
442 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
443 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
444 | printf("\n"); | |
445 | } | |
dfd4d8ee | 446 | if (sb->devflags) { |
62184891 | 447 | printf(" Flags :"); |
34163fc7 | 448 | if (sb->devflags & WriteMostly1) |
dfd4d8ee | 449 | printf(" write-mostly"); |
71574efb N |
450 | if (sb->devflags & FailFast1) |
451 | printf(" failfast"); | |
dfd4d8ee NB |
452 | printf("\n"); |
453 | } | |
82d9eba6 NB |
454 | |
455 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
456 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
457 | ||
bf95d0f3 N |
458 | if (sb->bblog_size && sb->bblog_offset) { |
459 | printf(" Bad Block Log : %d entries available at offset %ld sectors", | |
460 | __le16_to_cpu(sb->bblog_size)*512/8, | |
d6e4b44f | 461 | (long)(int32_t)__le32_to_cpu(sb->bblog_offset)); |
bf95d0f3 N |
462 | if (sb->feature_map & |
463 | __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
464 | printf(" - bad blocks present."); | |
465 | printf("\n"); | |
466 | } | |
467 | ||
82d9eba6 NB |
468 | if (calc_sb_1_csum(sb) == sb->sb_csum) |
469 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
470 | else | |
471 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
472 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 473 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
474 | printf("\n"); |
475 | if (__le32_to_cpu(sb->level) == 5) { | |
476 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
477 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
478 | } | |
fe77a154 N |
479 | if (__le32_to_cpu(sb->level) == 6) { |
480 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
481 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
482 | } | |
265e0f17 NB |
483 | if (__le32_to_cpu(sb->level) == 10) { |
484 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
485 | printf(" Layout :"); |
486 | print_r10_layout(lo); | |
487 | printf("\n"); | |
265e0f17 | 488 | } |
82d9eba6 NB |
489 | switch(__le32_to_cpu(sb->level)) { |
490 | case 0: | |
491 | case 4: | |
492 | case 5: | |
d2cd3ffc NB |
493 | case 6: |
494 | case 10: | |
b674b5b8 | 495 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
496 | break; |
497 | case -1: | |
b674b5b8 | 498 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
499 | break; |
500 | default: break; | |
501 | } | |
502 | printf("\n"); | |
e8e1c176 N |
503 | #if 0 |
504 | /* This turns out to just be confusing */ | |
c3684618 NB |
505 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
506 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
fa7574f6 | 507 | if (__le16_to_cpu(sb->dev_roles[i-1]) != MD_DISK_ROLE_SPARE) |
c3684618 NB |
508 | break; |
509 | for (d=0; d < i; d++) { | |
510 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
511 | if (d) printf(", "); | |
fa7574f6 SL |
512 | if (role == MD_DISK_ROLE_SPARE) printf("empty"); |
513 | else if(role == MD_DISK_ROLE_FAULTY) printf("failed"); | |
c3684618 NB |
514 | else printf("%d", role); |
515 | } | |
516 | printf(")\n"); | |
e8e1c176 N |
517 | #endif |
518 | printf(" Device Role : "); | |
69a48116 | 519 | role = role_from_sb(sb); |
fa7574f6 | 520 | if (role >= MD_DISK_ROLE_FAULTY) |
e8e1c176 | 521 | printf("spare\n"); |
ed94976d SL |
522 | else if (role == MD_DISK_ROLE_JOURNAL) |
523 | printf("Journal\n"); | |
24c7bc84 N |
524 | else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_REPLACEMENT)) |
525 | printf("Replacement device %d\n", role); | |
e8e1c176 N |
526 | else |
527 | printf("Active device %d\n", role); | |
528 | ||
82d9eba6 | 529 | printf(" Array State : "); |
4180aa4d | 530 | for (d=0; d<__le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 531 | int cnt = 0; |
f21e18ca | 532 | unsigned int i; |
82d9eba6 | 533 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 534 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 535 | if (role == d) |
82d9eba6 | 536 | cnt++; |
82d9eba6 | 537 | } |
24c7bc84 N |
538 | if (cnt == 2) |
539 | printf("R"); | |
540 | else if (cnt == 1) | |
541 | printf("A"); | |
542 | else if (cnt == 0) | |
543 | printf("."); | |
544 | else | |
545 | printf("?"); | |
82d9eba6 | 546 | } |
e8e1c176 N |
547 | #if 0 |
548 | /* This is confusing too */ | |
6fbba4c9 | 549 | faulty = 0; |
82d9eba6 NB |
550 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
551 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
fa7574f6 | 552 | if (role == MD_DISK_ROLE_FAULTY) |
6fbba4c9 | 553 | faulty++; |
82d9eba6 | 554 | } |
82d9eba6 | 555 | if (faulty) printf(" %d failed", faulty); |
e8e1c176 | 556 | #endif |
24c7bc84 | 557 | printf(" ('A' == active, '.' == missing, 'R' == replacing)"); |
82d9eba6 NB |
558 | printf("\n"); |
559 | } | |
560 | ||
061f2c6a | 561 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 562 | { |
3da92f27 | 563 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 564 | int i; |
a17a3de3 | 565 | unsigned long long sb_offset; |
2998bc01 | 566 | char *nm; |
b015e6c2 | 567 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
568 | |
569 | nm = strchr(sb->set_name, ':'); | |
570 | if (nm) | |
571 | nm++; | |
572 | else if (sb->set_name[0]) | |
573 | nm = sb->set_name; | |
574 | else | |
cf8de691 | 575 | nm = NULL; |
82d9eba6 | 576 | |
7103b9b8 N |
577 | printf("ARRAY "); |
578 | if (nm) { | |
579 | printf("/dev/md/"); | |
580 | print_escape(nm); | |
581 | putchar(' '); | |
582 | } | |
061f2c6a N |
583 | if (verbose && c) |
584 | printf(" level=%s", c); | |
a17a3de3 DL |
585 | sb_offset = __le64_to_cpu(sb->super_offset); |
586 | if (sb_offset <= 4) | |
e9a0e728 | 587 | printf(" metadata=1.1 "); |
a17a3de3 | 588 | else if (sb_offset <= 8) |
e9a0e728 | 589 | printf(" metadata=1.2 "); |
a17a3de3 | 590 | else |
e9a0e728 | 591 | printf(" metadata=1.0 "); |
061f2c6a N |
592 | if (verbose) |
593 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
594 | printf("UUID="); | |
82d9eba6 | 595 | for (i=0; i<16; i++) { |
82d9eba6 | 596 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 597 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 598 | } |
7103b9b8 N |
599 | if (sb->set_name[0]) { |
600 | printf(" name="); | |
601 | print_quoted(sb->set_name); | |
602 | } | |
82d9eba6 NB |
603 | printf("\n"); |
604 | } | |
605 | ||
0d726f17 KS |
606 | static void export_examine_super1(struct supertype *st) |
607 | { | |
608 | struct mdp_superblock_1 *sb = st->sb; | |
609 | int i; | |
610 | int len = 32; | |
80730bae | 611 | int layout; |
0d726f17 KS |
612 | |
613 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
614 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
615 | for (i=0; i<32; i++) | |
616 | if (sb->set_name[i] == '\n' || | |
617 | sb->set_name[i] == '\0') { | |
618 | len = i; | |
619 | break; | |
620 | } | |
621 | if (len) | |
622 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
80730bae MN |
623 | if (__le32_to_cpu(sb->level) > 0) { |
624 | int ddsks = 0, ddsks_denom = 1; | |
625 | switch(__le32_to_cpu(sb->level)) { | |
626 | case 1: ddsks=1;break; | |
627 | case 4: | |
628 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; | |
629 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
630 | case 10: | |
631 | layout = __le32_to_cpu(sb->layout); | |
632 | ddsks = __le32_to_cpu(sb->raid_disks); | |
633 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
634 | } | |
635 | if (ddsks) { | |
636 | long long asize = __le64_to_cpu(sb->size); | |
637 | asize = (asize << 9) * ddsks / ddsks_denom; | |
638 | printf("MD_ARRAY_SIZE=%s\n",human_size_brief(asize,JEDEC)); | |
639 | } | |
640 | } | |
0d726f17 KS |
641 | printf("MD_UUID="); |
642 | for (i=0; i<16; i++) { | |
643 | if ((i&3)==0 && i != 0) printf(":"); | |
644 | printf("%02x", sb->set_uuid[i]); | |
645 | } | |
646 | printf("\n"); | |
647 | printf("MD_UPDATE_TIME=%llu\n", | |
648 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
649 | printf("MD_DEV_UUID="); | |
650 | for (i=0; i<16; i++) { | |
651 | if ((i&3)==0 && i != 0) printf(":"); | |
652 | printf("%02x", sb->device_uuid[i]); | |
653 | } | |
654 | printf("\n"); | |
655 | printf("MD_EVENTS=%llu\n", | |
656 | (unsigned long long)__le64_to_cpu(sb->events)); | |
657 | } | |
658 | ||
74db60b0 N |
659 | static int copy_metadata1(struct supertype *st, int from, int to) |
660 | { | |
661 | /* Read superblock. If it looks good, write it out. | |
662 | * Then if a bitmap is present, copy that. | |
663 | * And if a bad-block-list is present, copy that too. | |
664 | */ | |
665 | void *buf; | |
666 | unsigned long long dsize, sb_offset; | |
667 | const int bufsize = 4*1024; | |
668 | struct mdp_superblock_1 super, *sb; | |
669 | ||
670 | if (posix_memalign(&buf, 4096, bufsize) != 0) | |
671 | return 1; | |
672 | ||
673 | if (!get_dev_size(from, NULL, &dsize)) | |
674 | goto err; | |
675 | ||
676 | dsize >>= 9; | |
677 | if (dsize < 24) | |
678 | goto err; | |
679 | switch(st->minor_version) { | |
680 | case 0: | |
681 | sb_offset = dsize; | |
682 | sb_offset -= 8*2; | |
683 | sb_offset &= ~(4*2-1); | |
684 | break; | |
685 | case 1: | |
686 | sb_offset = 0; | |
687 | break; | |
688 | case 2: | |
689 | sb_offset = 4*2; | |
690 | break; | |
691 | default: | |
692 | goto err; | |
693 | } | |
694 | ||
695 | if (lseek64(from, sb_offset << 9, 0) < 0LL) | |
696 | goto err; | |
697 | if (read(from, buf, bufsize) != bufsize) | |
698 | goto err; | |
699 | ||
700 | sb = buf; | |
701 | super = *sb; // save most of sb for when we reuse buf | |
702 | ||
703 | if (__le32_to_cpu(super.magic) != MD_SB_MAGIC || | |
704 | __le32_to_cpu(super.major_version) != 1 || | |
705 | __le64_to_cpu(super.super_offset) != sb_offset || | |
706 | calc_sb_1_csum(sb) != super.sb_csum) | |
707 | goto err; | |
708 | ||
709 | if (lseek64(to, sb_offset << 9, 0) < 0LL) | |
710 | goto err; | |
711 | if (write(to, buf, bufsize) != bufsize) | |
712 | goto err; | |
713 | ||
714 | if (super.feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
715 | unsigned long long bitmap_offset = sb_offset; | |
716 | int bytes = 4096; // just an estimate. | |
717 | int written = 0; | |
718 | struct align_fd afrom, ato; | |
719 | ||
720 | init_afd(&afrom, from); | |
721 | init_afd(&ato, to); | |
722 | ||
723 | bitmap_offset += (int32_t)__le32_to_cpu(super.bitmap_offset); | |
724 | ||
725 | if (lseek64(from, bitmap_offset<<9, 0) < 0) | |
726 | goto err; | |
727 | if (lseek64(to, bitmap_offset<<9, 0) < 0) | |
728 | goto err; | |
729 | ||
730 | for (written = 0; written < bytes ; ) { | |
731 | int n = bytes - written; | |
732 | if (n > 4096) | |
733 | n = 4096; | |
734 | if (aread(&afrom, buf, n) != n) | |
735 | goto err; | |
736 | if (written == 0) { | |
737 | /* have the header, can calculate | |
738 | * correct bitmap bytes */ | |
739 | bitmap_super_t *bms; | |
74db60b0 | 740 | bms = (void*)buf; |
4a3d29ed | 741 | bytes = calc_bitmap_size(bms, 512); |
74db60b0 N |
742 | if (n > bytes) |
743 | n = bytes; | |
744 | } | |
745 | if (awrite(&ato, buf, n) != n) | |
746 | goto err; | |
747 | written += n; | |
748 | } | |
749 | } | |
750 | ||
751 | if (super.bblog_size != 0 && | |
27c7c87a | 752 | __le16_to_cpu(super.bblog_size) <= 100 && |
74db60b0 N |
753 | super.bblog_offset != 0 && |
754 | (super.feature_map & __le32_to_cpu(MD_FEATURE_BAD_BLOCKS))) { | |
755 | /* There is a bad block log */ | |
756 | unsigned long long bb_offset = sb_offset; | |
27c7c87a | 757 | int bytes = __le16_to_cpu(super.bblog_size) * 512; |
74db60b0 N |
758 | int written = 0; |
759 | struct align_fd afrom, ato; | |
760 | ||
761 | init_afd(&afrom, from); | |
762 | init_afd(&ato, to); | |
763 | ||
764 | bb_offset += (int32_t)__le32_to_cpu(super.bblog_offset); | |
765 | ||
766 | if (lseek64(from, bb_offset<<9, 0) < 0) | |
767 | goto err; | |
768 | if (lseek64(to, bb_offset<<9, 0) < 0) | |
769 | goto err; | |
770 | ||
771 | for (written = 0; written < bytes ; ) { | |
772 | int n = bytes - written; | |
773 | if (n > 4096) | |
774 | n = 4096; | |
775 | if (aread(&afrom, buf, n) != n) | |
776 | goto err; | |
777 | ||
778 | if (awrite(&ato, buf, n) != n) | |
779 | goto err; | |
780 | written += n; | |
781 | } | |
782 | } | |
783 | ||
784 | free(buf); | |
785 | return 0; | |
786 | ||
787 | err: | |
788 | free(buf); | |
789 | return 1; | |
790 | } | |
791 | ||
3da92f27 | 792 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 793 | { |
3da92f27 | 794 | struct mdp_superblock_1 *sb = st->sb; |
0aa2f15b | 795 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
82d9eba6 | 796 | int i; |
b6750aa8 | 797 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 798 | |
65884368 | 799 | printf(" Name : %.32s", sb->set_name); |
b6750aa8 NB |
800 | if (l > 0 && l < 32 && |
801 | sb->set_name[l] == ':' && | |
802 | strncmp(sb->set_name, homehost, l) == 0) | |
803 | printf(" (local to host %s)", homehost); | |
8b2202de | 804 | if (bms->nodes > 0 && (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) |
65884368 AP |
805 | printf("\n Cluster Name : %-64s", bms->cluster_name); |
806 | printf("\n UUID : "); | |
82d9eba6 | 807 | for (i=0; i<16; i++) { |
82d9eba6 | 808 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 809 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 810 | } |
65884368 AP |
811 | printf("\n Events : %llu\n\n", |
812 | (unsigned long long)__le64_to_cpu(sb->events)); | |
82d9eba6 NB |
813 | } |
814 | ||
3da92f27 | 815 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 816 | { |
3da92f27 | 817 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
818 | int i; |
819 | ||
7103b9b8 N |
820 | if (sb->set_name[0]) { |
821 | printf(" name="); | |
822 | print_quoted(sb->set_name); | |
823 | } | |
82d9eba6 NB |
824 | printf(" UUID="); |
825 | for (i=0; i<16; i++) { | |
82d9eba6 | 826 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 827 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
828 | } |
829 | } | |
830 | ||
0d726f17 | 831 | static void export_detail_super1(struct supertype *st) |
54bad364 | 832 | { |
3da92f27 | 833 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
834 | int i; |
835 | int len = 32; | |
836 | ||
837 | for (i=0; i<32; i++) | |
838 | if (sb->set_name[i] == '\n' || | |
839 | sb->set_name[i] == '\0') { | |
840 | len = i; | |
841 | break; | |
842 | } | |
843 | if (len) | |
844 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
845 | } |
846 | ||
6d388a88 N |
847 | static int examine_badblocks_super1(struct supertype *st, int fd, char *devname) |
848 | { | |
849 | struct mdp_superblock_1 *sb = st->sb; | |
850 | unsigned long long offset; | |
851 | int size; | |
852 | __u64 *bbl, *bbp; | |
853 | int i; | |
854 | ||
27c7c87a | 855 | if (!sb->bblog_size || __le16_to_cpu(sb->bblog_size) > 100 |
6d388a88 N |
856 | || !sb->bblog_offset){ |
857 | printf("No bad-blocks list configured on %s\n", devname); | |
858 | return 0; | |
859 | } | |
860 | if ((sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
861 | == 0) { | |
862 | printf("Bad-blocks list is empty in %s\n", devname); | |
863 | return 0; | |
864 | } | |
865 | ||
27c7c87a | 866 | size = __le16_to_cpu(sb->bblog_size)* 512; |
0cf83229 | 867 | if (posix_memalign((void**)&bbl, 4096, size) != 0) { |
1ade5cc1 | 868 | pr_err("could not allocate badblocks list\n"); |
0cf83229 N |
869 | return 0; |
870 | } | |
6d388a88 N |
871 | offset = __le64_to_cpu(sb->super_offset) + |
872 | (int)__le32_to_cpu(sb->bblog_offset); | |
873 | offset <<= 9; | |
874 | if (lseek64(fd, offset, 0) < 0) { | |
875 | pr_err("Cannot seek to bad-blocks list\n"); | |
876 | return 1; | |
877 | } | |
878 | if (read(fd, bbl, size) != size) { | |
879 | pr_err("Cannot read bad-blocks list\n"); | |
880 | return 1; | |
881 | } | |
882 | /* 64bits per entry. 10 bits is block-count, 54 bits is block | |
883 | * offset. Blocks are sectors unless bblog->shift makes them bigger | |
884 | */ | |
885 | bbp = (__u64*)bbl; | |
886 | printf("Bad-blocks on %s:\n", devname); | |
887 | for (i = 0; i < size/8; i++, bbp++) { | |
888 | __u64 bb = __le64_to_cpu(*bbp); | |
889 | int count = bb & 0x3ff; | |
890 | unsigned long long sector = bb >> 10; | |
891 | ||
892 | if (bb + 1 == 0) | |
893 | break; | |
894 | ||
895 | sector <<= sb->bblog_shift; | |
896 | count <<= sb->bblog_shift; | |
897 | ||
898 | printf("%20llu for %d sectors\n", sector, count); | |
899 | } | |
900 | return 0; | |
901 | } | |
902 | ||
3da92f27 | 903 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 904 | { |
3da92f27 | 905 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
906 | int l = homehost ? strlen(homehost) : 0; |
907 | ||
908 | return (l > 0 && l < 32 && | |
909 | sb->set_name[l] == ':' && | |
910 | strncmp(sb->set_name, homehost, l) == 0); | |
911 | } | |
912 | ||
3da92f27 | 913 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 914 | { |
3da92f27 | 915 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
916 | char *cuuid = (char*)uuid; |
917 | int i; | |
918 | for (i=0; i<16; i++) | |
919 | cuuid[i] = super->set_uuid[i]; | |
920 | } | |
921 | ||
a5d85af7 | 922 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 923 | { |
3da92f27 | 924 | struct mdp_superblock_1 *sb = st->sb; |
80bf9135 N |
925 | struct bitmap_super_s *bsb = (void*)(((char*)sb)+MAX_SB_SIZE); |
926 | struct misc_dev_info *misc = (void*)(((char*)sb)+MAX_SB_SIZE+BM_SUPER_SIZE); | |
82d9eba6 | 927 | int working = 0; |
f21e18ca | 928 | unsigned int i; |
a5d85af7 N |
929 | unsigned int role; |
930 | unsigned int map_disks = info->array.raid_disks; | |
80bf9135 N |
931 | unsigned long long super_offset; |
932 | unsigned long long data_size; | |
82d9eba6 | 933 | |
95eeceeb | 934 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 935 | info->array.major_version = 1; |
b8ac1967 | 936 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
937 | info->array.patch_version = 0; |
938 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
939 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 940 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
941 | info->array.md_minor = -1; |
942 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 943 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 944 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c | 945 | info->array.state = |
d5977056 | 946 | (__le64_to_cpu(sb->resync_offset) == MaxSector) |
4855f95c | 947 | ? 1 : 0; |
06bd6793 GJ |
948 | if (__le32_to_cpu(bsb->nodes) > 1) |
949 | info->array.state |= (1 << MD_SB_CLUSTERED); | |
353632d9 | 950 | |
e97a7cd0 | 951 | super_offset = __le64_to_cpu(sb->super_offset); |
353632d9 NB |
952 | info->data_offset = __le64_to_cpu(sb->data_offset); |
953 | info->component_size = __le64_to_cpu(sb->size); | |
e97a7cd0 | 954 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { |
34a13953 | 955 | info->bitmap_offset = (int32_t)__le32_to_cpu(sb->bitmap_offset); |
e97a7cd0 AP |
956 | } else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_PPL)) { |
957 | info->ppl_offset = __le16_to_cpu(sb->ppl.offset); | |
958 | info->ppl_size = __le16_to_cpu(sb->ppl.size); | |
959 | info->ppl_sector = super_offset + info->ppl_offset; | |
960 | } | |
82d9eba6 NB |
961 | |
962 | info->disk.major = 0; | |
963 | info->disk.minor = 0; | |
fbf8a0b7 | 964 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 | 965 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
911cead7 | 966 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) |
fa7574f6 | 967 | role = MD_DISK_ROLE_FAULTY; |
82d9eba6 NB |
968 | else |
969 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
970 | ||
0ddc35be N |
971 | if (info->array.level <= 0) |
972 | data_size = __le64_to_cpu(sb->data_size); | |
973 | else | |
974 | data_size = __le64_to_cpu(sb->size); | |
80bf9135 N |
975 | if (info->data_offset < super_offset) { |
976 | unsigned long long end; | |
977 | info->space_before = info->data_offset; | |
978 | end = super_offset; | |
cc3130a7 N |
979 | |
980 | if (sb->bblog_offset && sb->bblog_size) { | |
981 | unsigned long long bboffset = super_offset; | |
982 | bboffset += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
983 | if (bboffset < end) | |
984 | end = bboffset; | |
985 | } | |
986 | ||
e97a7cd0 AP |
987 | if (super_offset + info->bitmap_offset + info->ppl_offset < end) |
988 | end = super_offset + info->bitmap_offset + info->ppl_offset; | |
cc3130a7 | 989 | |
80bf9135 N |
990 | if (info->data_offset + data_size < end) |
991 | info->space_after = end - data_size - info->data_offset; | |
992 | else | |
993 | info->space_after = 0; | |
994 | } else { | |
cc3130a7 N |
995 | unsigned long long earliest; |
996 | earliest = super_offset + (32+4)*2; /* match kernel */ | |
80bf9135 N |
997 | if (info->bitmap_offset > 0) { |
998 | unsigned long long bmend = info->bitmap_offset; | |
561ad559 | 999 | unsigned long long size = calc_bitmap_size(bsb, 4096); |
80bf9135 | 1000 | size /= 512; |
cc3130a7 N |
1001 | bmend += size; |
1002 | if (bmend > earliest) | |
ac92b44a | 1003 | earliest = bmend; |
e97a7cd0 AP |
1004 | } else if (info->ppl_offset > 0) { |
1005 | unsigned long long pplend = info->ppl_offset + | |
1006 | info->ppl_size; | |
1007 | if (pplend > earliest) | |
1008 | earliest = pplend; | |
cc3130a7 N |
1009 | } |
1010 | if (sb->bblog_offset && sb->bblog_size) { | |
1011 | unsigned long long bbend = super_offset; | |
1012 | bbend += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
27c7c87a | 1013 | bbend += __le16_to_cpu(sb->bblog_size); |
cc3130a7 N |
1014 | if (bbend > earliest) |
1015 | earliest = bbend; | |
1016 | } | |
1017 | if (earliest < info->data_offset) | |
1018 | info->space_before = info->data_offset - earliest; | |
1019 | else | |
1020 | info->space_before = 0; | |
80bf9135 N |
1021 | info->space_after = misc->device_size - data_size - info->data_offset; |
1022 | } | |
c4b26c64 N |
1023 | if (info->space_before == 0 && info->space_after == 0) { |
1024 | /* It will look like we don't support data_offset changes, | |
1025 | * be we do - it's just that there is no room. | |
1026 | * A change that reduced the number of devices should | |
1027 | * still be allowed, so set the otherwise useless value of '1' | |
1028 | */ | |
1029 | info->space_after = 1; | |
1030 | } | |
80bf9135 | 1031 | |
82d9eba6 NB |
1032 | info->disk.raid_disk = -1; |
1033 | switch(role) { | |
fa7574f6 | 1034 | case MD_DISK_ROLE_SPARE: |
f22385f9 | 1035 | info->disk.state = 0; /* spare: not active, not sync, not faulty */ |
82d9eba6 | 1036 | break; |
fa7574f6 | 1037 | case MD_DISK_ROLE_FAULTY: |
aa313118 | 1038 | info->disk.state = (1 << MD_DISK_FAULTY); /* faulty */ |
82d9eba6 | 1039 | break; |
ed94976d SL |
1040 | case MD_DISK_ROLE_JOURNAL: |
1041 | info->disk.state = (1 << MD_DISK_JOURNAL); | |
1042 | info->disk.raid_disk = role; | |
1043 | info->space_after = (misc->device_size - info->data_offset) % 8; /* journal uses all 4kB blocks*/ | |
1044 | break; | |
82d9eba6 NB |
1045 | default: |
1046 | info->disk.state = 6; /* active and in sync */ | |
1047 | info->disk.raid_disk = role; | |
1048 | } | |
cb099724 N |
1049 | if (sb->devflags & WriteMostly1) |
1050 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
71574efb N |
1051 | if (sb->devflags & FailFast1) |
1052 | info->disk.state |= (1 << MD_DISK_FAILFAST); | |
82d9eba6 | 1053 | info->events = __le64_to_cpu(sb->events); |
1522c538 | 1054 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 1055 | info->safe_mode_delay = 200; |
82d9eba6 NB |
1056 | |
1057 | memcpy(info->uuid, sb->set_uuid, 16); | |
1058 | ||
31317663 NB |
1059 | strncpy(info->name, sb->set_name, 32); |
1060 | info->name[32] = 0; | |
947fd4dd | 1061 | |
aacb2f81 | 1062 | if ((__le32_to_cpu(sb->feature_map)&MD_FEATURE_REPLACEMENT)) { |
72e7fb13 | 1063 | info->disk.state &= ~(1 << MD_DISK_SYNC); |
aacb2f81 N |
1064 | info->disk.state |= 1 << MD_DISK_REPLACEMENT; |
1065 | } | |
1066 | ||
921d9e16 N |
1067 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
1068 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
1069 | else | |
1070 | info->recovery_start = MaxSector; | |
1071 | ||
353632d9 NB |
1072 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
1073 | info->reshape_active = 1; | |
26bf5587 N |
1074 | if ((sb->feature_map & __le32_to_cpu(MD_FEATURE_NEW_OFFSET)) && |
1075 | sb->new_offset != 0) | |
5e88ab2e | 1076 | info->reshape_active |= RESHAPE_NO_BACKUP; |
353632d9 NB |
1077 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); |
1078 | info->new_level = __le32_to_cpu(sb->new_level); | |
1079 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
1080 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 1081 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
1082 | if (info->delta_disks < 0) |
1083 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
1084 | } else |
1085 | info->reshape_active = 0; | |
1086 | ||
6e75048b AK |
1087 | info->recovery_blocked = info->reshape_active; |
1088 | ||
a5d85af7 N |
1089 | if (map) |
1090 | for (i=0; i<map_disks; i++) | |
1091 | map[i] = 0; | |
f21e18ca | 1092 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 1093 | role = __le16_to_cpu(sb->dev_roles[i]); |
fa7574f6 | 1094 | if (/*role == MD_DISK_ROLE_SPARE || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 1095 | working++; |
a5d85af7 N |
1096 | if (map && role < map_disks) |
1097 | map[role] = 1; | |
1098 | } | |
82d9eba6 NB |
1099 | } |
1100 | ||
1101 | info->array.working_disks = working; | |
e97a7cd0 AP |
1102 | |
1103 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_JOURNAL)) { | |
051f3265 | 1104 | info->journal_device_required = 1; |
e97a7cd0 AP |
1105 | info->consistency_policy = CONSISTENCY_POLICY_JOURNAL; |
1106 | } else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_PPL)) { | |
1107 | info->consistency_policy = CONSISTENCY_POLICY_PPL; | |
1108 | } else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
1109 | info->consistency_policy = CONSISTENCY_POLICY_BITMAP; | |
1110 | } else if (info->array.level <= 0) { | |
1111 | info->consistency_policy = CONSISTENCY_POLICY_NONE; | |
1112 | } else { | |
1113 | info->consistency_policy = CONSISTENCY_POLICY_RESYNC; | |
1114 | } | |
1115 | ||
051f3265 | 1116 | info->journal_clean = 0; |
82d9eba6 NB |
1117 | } |
1118 | ||
00bbdbda N |
1119 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
1120 | { | |
1121 | struct mdinfo *info; | |
1122 | ||
1123 | if (subarray) | |
1124 | return NULL; | |
1125 | ||
503975b9 | 1126 | info = xmalloc(sizeof(*info)); |
00bbdbda N |
1127 | getinfo_super1(st, info, NULL); |
1128 | return info; | |
1129 | } | |
1130 | ||
68c7d6d7 | 1131 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 1132 | char *update, |
e5eac01f NB |
1133 | char *devname, int verbose, |
1134 | int uuid_set, char *homehost) | |
82d9eba6 | 1135 | { |
5a31170d N |
1136 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
1137 | * if any change was made. For others, the return value is | |
1138 | * ignored. | |
c4d831e1 | 1139 | */ |
82d9eba6 | 1140 | int rv = 0; |
d15a1f72 | 1141 | int lockid; |
3da92f27 | 1142 | struct mdp_superblock_1 *sb = st->sb; |
81a8a694 | 1143 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
82d9eba6 | 1144 | |
81a8a694 GJ |
1145 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) { |
1146 | rv = cluster_get_dlmlock(&lockid); | |
d15a1f72 GJ |
1147 | if (rv) { |
1148 | pr_err("Cannot get dlmlock in %s return %d\n", __func__, rv); | |
81a8a694 | 1149 | cluster_release_dlmlock(lockid); |
d15a1f72 GJ |
1150 | return rv; |
1151 | } | |
1152 | } | |
1153 | ||
def11332 N |
1154 | if (strcmp(update, "homehost") == 0 && |
1155 | homehost) { | |
1156 | /* Note that 'homehost' is special as it is really | |
1157 | * a "name" update. | |
1158 | */ | |
1159 | char *c; | |
1160 | update = "name"; | |
1161 | c = strchr(sb->set_name, ':'); | |
1162 | if (c) | |
1163 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
1164 | else | |
1165 | strncpy(info->name, sb->set_name, 32); | |
1166 | info->name[32] = 0; | |
1167 | } | |
1168 | ||
67a8c82d NB |
1169 | if (strcmp(update, "force-one")==0) { |
1170 | /* Not enough devices for a working array, | |
1171 | * so bring this one up-to-date | |
1172 | */ | |
c4d831e1 NB |
1173 | if (sb->events != __cpu_to_le64(info->events)) |
1174 | rv = 1; | |
6d3d5804 | 1175 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 1176 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
1177 | /* Degraded array and 'force' requests to |
1178 | * maybe need to mark it 'clean'. | |
1179 | */ | |
82d9eba6 NB |
1180 | switch(__le32_to_cpu(sb->level)) { |
1181 | case 5: case 4: case 6: | |
1182 | /* need to force clean */ | |
b7528a20 | 1183 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 1184 | rv = 1; |
b7528a20 | 1185 | sb->resync_offset = MaxSector; |
82d9eba6 | 1186 | } |
1e2b2765 | 1187 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
1188 | int d = info->disk.number; |
1189 | int want; | |
aacb2f81 | 1190 | if (info->disk.state & (1<<MD_DISK_ACTIVE)) |
a2ce5a1a | 1191 | want = info->disk.raid_disk; |
69a48116 SL |
1192 | else if (info->disk.state & (1<<MD_DISK_JOURNAL)) |
1193 | want = MD_DISK_ROLE_JOURNAL; | |
82d9eba6 | 1194 | else |
fa7574f6 | 1195 | want = MD_DISK_ROLE_SPARE; |
a2ce5a1a N |
1196 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
1197 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
1198 | rv = 1; |
1199 | } | |
d43494fc N |
1200 | if (info->reshape_active && |
1201 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
1202 | info->delta_disks >= 0 && | |
1203 | info->reshape_progress < __le64_to_cpu(sb->reshape_position)) { | |
1204 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
1205 | rv = 1; | |
1206 | } | |
1207 | if (info->reshape_active && | |
1208 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
1209 | info->delta_disks < 0 && | |
1210 | info->reshape_progress > __le64_to_cpu(sb->reshape_position)) { | |
1211 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
1212 | rv = 1; | |
1213 | } | |
1e2b2765 | 1214 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 1215 | unsigned int i; |
c5f71c24 | 1216 | int fd; |
f21e18ca | 1217 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f NB |
1218 | |
1219 | for (i=0 ; i < max ; i++) | |
fa7574f6 | 1220 | if (__le16_to_cpu(sb->dev_roles[i]) >= MD_DISK_ROLE_FAULTY) |
f752781f NB |
1221 | break; |
1222 | sb->dev_number = __cpu_to_le32(i); | |
1223 | info->disk.number = i; | |
1224 | if (max >= __le32_to_cpu(sb->max_dev)) | |
1225 | sb->max_dev = __cpu_to_le32(max+1); | |
1226 | ||
c5f71c24 | 1227 | random_uuid(sb->device_uuid); |
f752781f NB |
1228 | |
1229 | sb->dev_roles[i] = | |
1230 | __cpu_to_le16(info->disk.raid_disk); | |
1c6cb603 N |
1231 | |
1232 | fd = open(devname, O_RDONLY); | |
1233 | if (fd >= 0) { | |
1234 | unsigned long long ds; | |
1235 | get_dev_size(fd, devname, &ds); | |
1236 | close(fd); | |
1237 | ds >>= 9; | |
1238 | if (__le64_to_cpu(sb->super_offset) < | |
1239 | __le64_to_cpu(sb->data_offset)) { | |
1240 | sb->data_size = __cpu_to_le64( | |
1241 | ds - __le64_to_cpu(sb->data_offset)); | |
1242 | } else { | |
1243 | ds -= 8*2; | |
1244 | ds &= ~(unsigned long long)(4*2-1); | |
1245 | sb->super_offset = __cpu_to_le64(ds); | |
1246 | sb->data_size = __cpu_to_le64( | |
1247 | ds - __le64_to_cpu(sb->data_offset)); | |
1248 | } | |
1249 | } | |
1e2b2765 | 1250 | } else if (strcmp(update, "linear-grow-update") == 0) { |
82d9eba6 | 1251 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
1252 | sb->dev_roles[info->disk.number] = |
1253 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 1254 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 1255 | /* make sure resync happens */ |
434b7755 | 1256 | sb->resync_offset = 0ULL; |
1e2b2765 | 1257 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 1258 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 1259 | |
561ad559 AP |
1260 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET) |
1261 | memcpy(bms->uuid, sb->set_uuid, 16); | |
5a31170d N |
1262 | } else if (strcmp(update, "no-bitmap") == 0) { |
1263 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
688e99a7 N |
1264 | } else if (strcmp(update, "bbl") == 0) { |
1265 | /* only possible if there is room after the bitmap, or if | |
1266 | * there is no bitmap | |
1267 | */ | |
1268 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1269 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
561ad559 | 1270 | long bitmap_offset = 0; |
688e99a7 N |
1271 | long bm_sectors = 0; |
1272 | long space; | |
1273 | ||
1274 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
561ad559 AP |
1275 | bitmap_offset = (long)__le32_to_cpu(sb->bitmap_offset); |
1276 | bm_sectors = calc_bitmap_size(bms, 4096) >> 9; | |
e97a7cd0 AP |
1277 | } else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) { |
1278 | bitmap_offset = (long)__le16_to_cpu(sb->ppl.offset); | |
1279 | bm_sectors = (long)__le16_to_cpu(sb->ppl.size); | |
688e99a7 | 1280 | } |
32141c17 | 1281 | |
688e99a7 | 1282 | if (sb_offset < data_offset) { |
f79bbf4f | 1283 | /* 1.1 or 1.2. Put bbl after bitmap leaving at least 32K |
688e99a7 N |
1284 | */ |
1285 | long bb_offset; | |
f79bbf4f | 1286 | bb_offset = sb_offset + 8; |
688e99a7 | 1287 | if (bm_sectors && bitmap_offset > 0) |
f79bbf4f N |
1288 | bb_offset = bitmap_offset + bm_sectors; |
1289 | while (bb_offset < (long)sb_offset + 8 + 32*2 | |
1290 | && bb_offset + 8+8 <= (long)data_offset) | |
1291 | /* too close to bitmap, and room to grow */ | |
1292 | bb_offset += 8; | |
1293 | if (bb_offset + 8 <= (long)data_offset) { | |
688e99a7 N |
1294 | sb->bblog_size = __cpu_to_le16(8); |
1295 | sb->bblog_offset = __cpu_to_le32(bb_offset); | |
1296 | } | |
1297 | } else { | |
1298 | /* 1.0 - Put bbl just before super block */ | |
1299 | if (bm_sectors && bitmap_offset < 0) | |
1300 | space = -bitmap_offset - bm_sectors; | |
1301 | else | |
1302 | space = sb_offset - data_offset - | |
1303 | __le64_to_cpu(sb->data_size); | |
1304 | if (space >= 8) { | |
1305 | sb->bblog_size = __cpu_to_le16(8); | |
1306 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1307 | } | |
1308 | } | |
1309 | } else if (strcmp(update, "no-bbl") == 0) { | |
1310 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
1311 | pr_err("Cannot remove active bbl from %s\n",devname); | |
1312 | else { | |
1313 | sb->bblog_size = 0; | |
1314 | sb->bblog_shift = 0; | |
1315 | sb->bblog_offset = 0; | |
1316 | } | |
6dd16dac N |
1317 | } else if (strcmp(update, "force-no-bbl") == 0) { |
1318 | sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS); | |
1319 | sb->bblog_size = 0; | |
1320 | sb->bblog_shift = 0; | |
1321 | sb->bblog_offset = 0; | |
e6e9dd3f AP |
1322 | } else if (strcmp(update, "ppl") == 0) { |
1323 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1324 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
1325 | unsigned long long data_size = __le64_to_cpu(sb->data_size); | |
1326 | long bb_offset = __le32_to_cpu(sb->bblog_offset); | |
1327 | int space; | |
1328 | int optimal_space; | |
1329 | int offset; | |
1330 | ||
1331 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1332 | pr_err("Cannot add PPL to array with bitmap\n"); | |
1333 | return -2; | |
1334 | } | |
1335 | ||
1336 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_JOURNAL)) { | |
1337 | pr_err("Cannot add PPL to array with journal\n"); | |
1338 | return -2; | |
1339 | } | |
1340 | ||
1341 | if (sb_offset < data_offset) { | |
1342 | if (bb_offset) | |
1343 | space = bb_offset - 8; | |
1344 | else | |
1345 | space = data_offset - sb_offset - 8; | |
1346 | offset = 8; | |
1347 | } else { | |
1348 | offset = -(sb_offset - data_offset - data_size); | |
1349 | if (offset < INT16_MIN) | |
1350 | offset = INT16_MIN; | |
1351 | space = -(offset - bb_offset); | |
1352 | } | |
1353 | ||
1354 | if (space < (PPL_HEADER_SIZE >> 9) + 8) { | |
1355 | pr_err("Not enough space to add ppl\n"); | |
1356 | return -2; | |
1357 | } | |
1358 | ||
1359 | optimal_space = choose_ppl_space(__le32_to_cpu(sb->chunksize)); | |
1360 | ||
1361 | if (space > optimal_space) | |
1362 | space = optimal_space; | |
1363 | if (space > UINT16_MAX) | |
1364 | space = UINT16_MAX; | |
1365 | ||
1366 | sb->ppl.offset = __cpu_to_le16(offset); | |
1367 | sb->ppl.size = __cpu_to_le16(space); | |
1368 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL); | |
1369 | } else if (strcmp(update, "no-ppl") == 0) { | |
1370 | sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_PPL); | |
1e2b2765 | 1371 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
1372 | if (info->name[0] == 0) |
1373 | sprintf(info->name, "%d", info->array.md_minor); | |
1374 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
1375 | if (homehost && | |
1376 | strchr(info->name, ':') == NULL && | |
1377 | strlen(homehost)+1+strlen(info->name) < 32) { | |
1378 | strcpy(sb->set_name, homehost); | |
1379 | strcat(sb->set_name, ":"); | |
1380 | strcat(sb->set_name, info->name); | |
1381 | } else | |
47426701 | 1382 | strncpy(sb->set_name, info->name, sizeof(sb->set_name)); |
1e2b2765 | 1383 | } else if (strcmp(update, "devicesize") == 0 && |
bee8ec56 NB |
1384 | __le64_to_cpu(sb->super_offset) < |
1385 | __le64_to_cpu(sb->data_offset)) { | |
1386 | /* set data_size to device size less data_offset */ | |
1387 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
911cead7 | 1388 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); |
bee8ec56 NB |
1389 | sb->data_size = __cpu_to_le64( |
1390 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
d5ff855d | 1391 | } else if (strncmp(update, "revert-reshape", 14) == 0) { |
199f1a1f N |
1392 | rv = -2; |
1393 | if (!(sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE))) | |
1394 | pr_err("No active reshape to revert on %s\n", | |
1395 | devname); | |
1396 | else { | |
199f1a1f | 1397 | __u32 temp; |
a2836f12 N |
1398 | unsigned long long reshape_sectors; |
1399 | long reshape_chunk; | |
1400 | rv = 0; | |
d5ff855d N |
1401 | /* If the reshape hasn't started, just stop it. |
1402 | * It is conceivable that a stripe was modified but | |
1403 | * the metadata not updated. In that case the backup | |
1404 | * should have been used to get passed the critical stage. | |
1405 | * If that couldn't happen, the "-nobackup" version | |
1406 | * will be used. | |
1407 | */ | |
1408 | if (strcmp(update, "revert-reshape-nobackup") == 0 && | |
1409 | sb->reshape_position == 0 && | |
1410 | (__le32_to_cpu(sb->delta_disks) > 0 || | |
1411 | (__le32_to_cpu(sb->delta_disks) == 0 && | |
1412 | !(sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS))))) { | |
1413 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE); | |
1414 | sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
1415 | __le32_to_cpu(sb->delta_disks)); | |
1416 | sb->delta_disks = 0; | |
1417 | goto done; | |
1418 | } | |
a2836f12 N |
1419 | /* reshape_position is a little messy. |
1420 | * Its value must be a multiple of the larger | |
1421 | * chunk size, and of the "after" data disks. | |
1422 | * So when reverting we need to change it to | |
1423 | * be a multiple of the new "after" data disks, | |
1424 | * which is the old "before". | |
1425 | * If it isn't already a multiple of 'before', | |
1426 | * the only thing we could do would be | |
1427 | * copy some block around on the disks, which | |
1428 | * is easy to get wrong. | |
1429 | * So we reject a revert-reshape unless the | |
1430 | * alignment is good. | |
1431 | */ | |
efb3994e N |
1432 | if (__le32_to_cpu(sb->level) >= 4 && |
1433 | __le32_to_cpu(sb->level) <= 6) { | |
1434 | reshape_sectors = __le64_to_cpu(sb->reshape_position); | |
1435 | reshape_chunk = __le32_to_cpu(sb->new_chunk); | |
1436 | reshape_chunk *= __le32_to_cpu(sb->raid_disks) - __le32_to_cpu(sb->delta_disks) - | |
1437 | (__le32_to_cpu(sb->level)==6 ? 2 : 1); | |
1438 | if (reshape_sectors % reshape_chunk) { | |
1439 | pr_err("Reshape position is not suitably aligned.\n"); | |
2bf62891 | 1440 | pr_err("Try normal assembly and stop again\n"); |
efb3994e N |
1441 | return -2; |
1442 | } | |
a2836f12 N |
1443 | } |
1444 | sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
199f1a1f N |
1445 | __le32_to_cpu(sb->delta_disks)); |
1446 | if (sb->delta_disks == 0) | |
1447 | sb->feature_map ^= __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS); | |
1448 | else | |
1449 | sb->delta_disks = __cpu_to_le32(-__le32_to_cpu(sb->delta_disks)); | |
1450 | ||
1451 | temp = sb->new_layout; | |
1452 | sb->new_layout = sb->layout; | |
1453 | sb->layout = temp; | |
1454 | ||
1455 | temp = sb->new_chunk; | |
1456 | sb->new_chunk = sb->chunksize; | |
1457 | sb->chunksize = temp; | |
1458 | ||
1459 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_NEW_OFFSET)) { | |
419e0182 N |
1460 | long offset_delta = (int32_t)__le32_to_cpu(sb->new_offset); |
1461 | sb->data_offset = __cpu_to_le64(__le64_to_cpu(sb->data_offset) + offset_delta); | |
1462 | sb->new_offset = __cpu_to_le32(-offset_delta); | |
1463 | sb->data_size = __cpu_to_le64(__le64_to_cpu(sb->data_size) - offset_delta); | |
199f1a1f | 1464 | } |
d5ff855d | 1465 | done:; |
199f1a1f | 1466 | } |
1e2b2765 | 1467 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 1468 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
16715c01 DL |
1469 | else if (strcmp(update, "writemostly")==0) |
1470 | sb->devflags |= WriteMostly1; | |
1471 | else if (strcmp(update, "readwrite")==0) | |
1472 | sb->devflags &= ~WriteMostly1; | |
71574efb N |
1473 | else if (strcmp(update, "failfast") == 0) |
1474 | sb->devflags |= FailFast1; | |
1475 | else if (strcmp(update, "nofailfast") == 0) | |
1476 | sb->devflags &= ~FailFast1; | |
1e2b2765 N |
1477 | else |
1478 | rv = -1; | |
82d9eba6 NB |
1479 | |
1480 | sb->sb_csum = calc_sb_1_csum(sb); | |
81a8a694 GJ |
1481 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) |
1482 | cluster_release_dlmlock(lockid); | |
d15a1f72 | 1483 | |
82d9eba6 NB |
1484 | return rv; |
1485 | } | |
1486 | ||
3da92f27 | 1487 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
5308f117 | 1488 | struct shape *s, char *name, char *homehost, |
83cd1e97 | 1489 | int *uuid, unsigned long long data_offset) |
82d9eba6 | 1490 | { |
6416d527 | 1491 | struct mdp_superblock_1 *sb; |
82d9eba6 | 1492 | int spares; |
05697ec1 | 1493 | char defname[10]; |
911cead7 | 1494 | int sbsize; |
6416d527 | 1495 | |
3c0bcd46 | 1496 | if (posix_memalign((void**)&sb, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 1497 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
1498 | return 0; |
1499 | } | |
1afa9308 | 1500 | memset(sb, 0, SUPER1_SIZE); |
82d9eba6 | 1501 | |
64557c33 | 1502 | st->sb = sb; |
ba7eb04f | 1503 | if (info == NULL) { |
82d9eba6 NB |
1504 | /* zeroing superblock */ |
1505 | return 0; | |
05697ec1 | 1506 | } |
82d9eba6 NB |
1507 | |
1508 | spares = info->working_disks - info->active_disks; | |
911cead7 | 1509 | if (info->raid_disks + spares > MAX_DEVS) { |
e7b84f9d | 1510 | pr_err("too many devices requested: %d+%d > %d\n", |
911cead7 | 1511 | info->raid_disks , spares, MAX_DEVS); |
82d9eba6 NB |
1512 | return 0; |
1513 | } | |
1514 | ||
82d9eba6 NB |
1515 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
1516 | sb->major_version = __cpu_to_le32(1); | |
1517 | sb->feature_map = 0; | |
1518 | sb->pad0 = 0; | |
34163fc7 | 1519 | |
350f29f9 NB |
1520 | if (uuid) |
1521 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
c5f71c24 JS |
1522 | else |
1523 | random_uuid(sb->set_uuid);; | |
82d9eba6 | 1524 | |
05697ec1 NB |
1525 | if (name == NULL || *name == 0) { |
1526 | sprintf(defname, "%d", info->md_minor); | |
1527 | name = defname; | |
1528 | } | |
05697ec1 NB |
1529 | if (homehost && |
1530 | strchr(name, ':')== NULL && | |
1531 | strlen(homehost)+1+strlen(name) < 32) { | |
1532 | strcpy(sb->set_name, homehost); | |
1533 | strcat(sb->set_name, ":"); | |
1534 | strcat(sb->set_name, name); | |
1535 | } else | |
47426701 | 1536 | strncpy(sb->set_name, name, sizeof(sb->set_name)); |
82d9eba6 NB |
1537 | |
1538 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
1539 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 1540 | sb->layout = __cpu_to_le32(info->layout); |
5308f117 | 1541 | sb->size = __cpu_to_le64(s->size*2ULL); |
82d9eba6 NB |
1542 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
1543 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
1544 | ||
83cd1e97 | 1545 | sb->data_offset = __cpu_to_le64(data_offset); |
82d9eba6 NB |
1546 | sb->data_size = __cpu_to_le64(0); |
1547 | sb->super_offset = __cpu_to_le64(0); | |
1548 | sb->recovery_offset = __cpu_to_le64(0); | |
1549 | ||
1550 | sb->utime = sb->ctime; | |
1551 | sb->events = __cpu_to_le64(1); | |
34321279 | 1552 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 1553 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
1554 | else |
1555 | sb->resync_offset = 0; | |
911cead7 N |
1556 | sbsize = sizeof(struct mdp_superblock_1) + 2 * (info->raid_disks + spares); |
1557 | sbsize = ROUND_UP(sbsize, 512); | |
1558 | sb->max_dev = __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
82d9eba6 | 1559 | |
911cead7 | 1560 | memset(sb->dev_roles, 0xff, MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); |
82d9eba6 | 1561 | |
e97a7cd0 AP |
1562 | if (s->consistency_policy == CONSISTENCY_POLICY_PPL) |
1563 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL); | |
1564 | ||
82d9eba6 NB |
1565 | return 1; |
1566 | } | |
1567 | ||
111d01fc NB |
1568 | struct devinfo { |
1569 | int fd; | |
1570 | char *devname; | |
72ca9bcf | 1571 | long long data_offset; |
111d01fc NB |
1572 | mdu_disk_info_t disk; |
1573 | struct devinfo *next; | |
1574 | }; | |
32141c17 | 1575 | |
82d9eba6 | 1576 | /* Add a device to the superblock being created */ |
f20c3968 | 1577 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
72ca9bcf | 1578 | int fd, char *devname, unsigned long long data_offset) |
82d9eba6 | 1579 | { |
3da92f27 | 1580 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 1581 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc | 1582 | struct devinfo *di, **dip; |
81a8a694 | 1583 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
d15a1f72 | 1584 | int rv, lockid; |
e23c2663 | 1585 | int dk_state; |
d15a1f72 | 1586 | |
81a8a694 GJ |
1587 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) { |
1588 | rv = cluster_get_dlmlock(&lockid); | |
d15a1f72 GJ |
1589 | if (rv) { |
1590 | pr_err("Cannot get dlmlock in %s return %d\n", __func__, rv); | |
81a8a694 | 1591 | cluster_release_dlmlock(lockid); |
d15a1f72 GJ |
1592 | return rv; |
1593 | } | |
1594 | } | |
111d01fc | 1595 | |
e23c2663 | 1596 | dk_state = dk->state & ~(1<<MD_DISK_FAILFAST); |
aa313118 GK |
1597 | if ((dk_state & (1<<MD_DISK_ACTIVE)) && |
1598 | (dk_state & (1<<MD_DISK_SYNC)))/* active, sync */ | |
82d9eba6 | 1599 | *rp = __cpu_to_le16(dk->raid_disk); |
e23c2663 | 1600 | else if (dk_state & (1<<MD_DISK_JOURNAL)) |
cc1799c3 | 1601 | *rp = MD_DISK_ROLE_JOURNAL; |
aa313118 | 1602 | else if ((dk_state & ~(1<<MD_DISK_ACTIVE)) == 0) /* active or idle -> spare */ |
fa7574f6 | 1603 | *rp = MD_DISK_ROLE_SPARE; |
34163fc7 | 1604 | else |
fa7574f6 | 1605 | *rp = MD_DISK_ROLE_FAULTY; |
111d01fc | 1606 | |
f21e18ca | 1607 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
911cead7 | 1608 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) |
9df04a4f | 1609 | sb->max_dev = __cpu_to_le32(dk->number+1); |
8844e291 | 1610 | |
d2ca6449 | 1611 | sb->dev_number = __cpu_to_le32(dk->number); |
16715c01 | 1612 | sb->devflags = 0; /* don't copy another disks flags */ |
d2ca6449 NB |
1613 | sb->sb_csum = calc_sb_1_csum(sb); |
1614 | ||
111d01fc NB |
1615 | dip = (struct devinfo **)&st->info; |
1616 | while (*dip) | |
1617 | dip = &(*dip)->next; | |
503975b9 | 1618 | di = xmalloc(sizeof(struct devinfo)); |
111d01fc NB |
1619 | di->fd = fd; |
1620 | di->devname = devname; | |
1621 | di->disk = *dk; | |
72ca9bcf | 1622 | di->data_offset = data_offset; |
111d01fc NB |
1623 | di->next = NULL; |
1624 | *dip = di; | |
f20c3968 | 1625 | |
81a8a694 GJ |
1626 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) |
1627 | cluster_release_dlmlock(lockid); | |
d15a1f72 | 1628 | |
f20c3968 | 1629 | return 0; |
82d9eba6 NB |
1630 | } |
1631 | ||
b138214f | 1632 | static int locate_bitmap1(struct supertype *st, int fd, int node_num); |
14263cf1 | 1633 | |
3da92f27 | 1634 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 1635 | { |
3da92f27 | 1636 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 1637 | unsigned long long sb_offset; |
308340aa | 1638 | struct align_fd afd; |
82d9eba6 | 1639 | int sbsize; |
5dd497ee | 1640 | unsigned long long dsize; |
81a8a694 | 1641 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
d15a1f72 GJ |
1642 | int rv, lockid; |
1643 | ||
81a8a694 GJ |
1644 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) { |
1645 | rv = cluster_get_dlmlock(&lockid); | |
d15a1f72 GJ |
1646 | if (rv) { |
1647 | pr_err("Cannot get dlmlock in %s return %d\n", __func__, rv); | |
81a8a694 | 1648 | cluster_release_dlmlock(lockid); |
d15a1f72 GJ |
1649 | return rv; |
1650 | } | |
1651 | } | |
96395475 | 1652 | |
beae1dfe NB |
1653 | if (!get_dev_size(fd, NULL, &dsize)) |
1654 | return 1; | |
1655 | ||
1656 | dsize >>= 9; | |
96395475 | 1657 | |
5dd497ee | 1658 | if (dsize < 24) |
96395475 NB |
1659 | return 2; |
1660 | ||
308340aa JS |
1661 | init_afd(&afd, fd); |
1662 | ||
96395475 NB |
1663 | /* |
1664 | * Calculate the position of the superblock. | |
1665 | * It is always aligned to a 4K boundary and | |
1666 | * depending on minor_version, it can be: | |
1667 | * 0: At least 8K, but less than 12K, from end of device | |
1668 | * 1: At start of device | |
1669 | * 2: 4K from start of device. | |
1670 | */ | |
1671 | switch(st->minor_version) { | |
1672 | case 0: | |
5dd497ee | 1673 | sb_offset = dsize; |
96395475 NB |
1674 | sb_offset -= 8*2; |
1675 | sb_offset &= ~(4*2-1); | |
1676 | break; | |
1677 | case 1: | |
6fbba4c9 | 1678 | sb_offset = 0; |
96395475 NB |
1679 | break; |
1680 | case 2: | |
1681 | sb_offset = 4*2; | |
1682 | break; | |
1683 | default: | |
1684 | return -EINVAL; | |
1685 | } | |
1686 | ||
6fbba4c9 NB |
1687 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
1688 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 | 1689 | ) { |
e7b84f9d | 1690 | pr_err("internal error - sb_offset is wrong\n"); |
96395475 NB |
1691 | abort(); |
1692 | } | |
82d9eba6 | 1693 | |
6fbba4c9 | 1694 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
1695 | return 3; |
1696 | ||
0a2f1894 | 1697 | sbsize = ROUND_UP(sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev), 512); |
82d9eba6 | 1698 | |
308340aa | 1699 | if (awrite(&afd, sb, sbsize) != sbsize) |
82d9eba6 NB |
1700 | return 4; |
1701 | ||
14263cf1 NB |
1702 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1703 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
911cead7 | 1704 | (((char*)sb)+MAX_SB_SIZE); |
14263cf1 | 1705 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
b138214f | 1706 | locate_bitmap1(st, fd, 0); |
308340aa JS |
1707 | if (awrite(&afd, bm, sizeof(*bm)) != sizeof(*bm)) |
1708 | return 5; | |
14263cf1 NB |
1709 | } |
1710 | } | |
570c0542 | 1711 | fsync(fd); |
81a8a694 GJ |
1712 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) |
1713 | cluster_release_dlmlock(lockid); | |
d15a1f72 | 1714 | |
82d9eba6 NB |
1715 | return 0; |
1716 | } | |
1717 | ||
3da92f27 | 1718 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1719 | |
2fb749d1 NB |
1720 | static unsigned long choose_bm_space(unsigned long devsize) |
1721 | { | |
1722 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1723 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1724 | * NOTE: result must be multiple of 4K else bad things happen |
1725 | * on 4K-sector devices. | |
2fb749d1 | 1726 | */ |
7eef9be2 JS |
1727 | if (devsize < 64*2) |
1728 | return 0; | |
2fb749d1 NB |
1729 | if (devsize - 64*2 >= 200*1024*1024*2) |
1730 | return 128*2; | |
1731 | if (devsize - 4*2 > 8*1024*1024*2) | |
1732 | return 64*2; | |
1733 | return 4*2; | |
1734 | } | |
1735 | ||
e8090005 N |
1736 | static void free_super1(struct supertype *st); |
1737 | ||
198d5478 | 1738 | __u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len); |
cc1799c3 | 1739 | |
e97a7cd0 AP |
1740 | static int write_init_ppl1(struct supertype *st, struct mdinfo *info, int fd) |
1741 | { | |
1742 | struct mdp_superblock_1 *sb = st->sb; | |
1743 | void *buf; | |
1744 | struct ppl_header *ppl_hdr; | |
1745 | int ret; | |
1746 | ||
1747 | ret = posix_memalign(&buf, 4096, PPL_HEADER_SIZE); | |
1748 | if (ret) { | |
1749 | pr_err("Failed to allocate PPL header buffer\n"); | |
1750 | return ret; | |
1751 | } | |
1752 | ||
1753 | memset(buf, 0, PPL_HEADER_SIZE); | |
1754 | ppl_hdr = buf; | |
1755 | memset(ppl_hdr->reserved, 0xff, PPL_HDR_RESERVED); | |
1756 | ppl_hdr->signature = __cpu_to_le32(~crc32c_le(~0, sb->set_uuid, | |
1757 | sizeof(sb->set_uuid))); | |
1758 | ppl_hdr->checksum = __cpu_to_le32(~crc32c_le(~0, buf, PPL_HEADER_SIZE)); | |
1759 | ||
1760 | if (lseek64(fd, info->ppl_sector * 512, SEEK_SET) < 0) { | |
1761 | ret = errno; | |
1762 | perror("Failed to seek to PPL header location"); | |
1763 | } | |
1764 | ||
1765 | if (!ret && write(fd, buf, PPL_HEADER_SIZE) != PPL_HEADER_SIZE) { | |
1766 | ret = errno; | |
1767 | perror("Write PPL header failed"); | |
1768 | } | |
1769 | ||
1770 | if (!ret) | |
1771 | fsync(fd); | |
1772 | ||
1773 | free(buf); | |
1774 | return ret; | |
1775 | } | |
1776 | ||
1777 | #define META_BLOCK_SIZE 4096 | |
1778 | ||
cc1799c3 SL |
1779 | static int write_empty_r5l_meta_block(struct supertype *st, int fd) |
1780 | { | |
1781 | struct r5l_meta_block *mb; | |
1782 | struct mdp_superblock_1 *sb = st->sb; | |
1783 | struct align_fd afd; | |
1784 | __u32 crc; | |
1785 | ||
1786 | init_afd(&afd, fd); | |
1787 | ||
1788 | if (posix_memalign((void**)&mb, 4096, META_BLOCK_SIZE) != 0) { | |
1789 | pr_err("Could not allocate memory for the meta block.\n"); | |
1790 | return 1; | |
1791 | } | |
1792 | ||
1793 | memset(mb, 0, META_BLOCK_SIZE); | |
1794 | ||
1795 | mb->magic = __cpu_to_le32(R5LOG_MAGIC); | |
1796 | mb->version = R5LOG_VERSION; | |
1797 | mb->meta_size = __cpu_to_le32(sizeof(struct r5l_meta_block)); | |
1798 | mb->seq = __cpu_to_le64(random32()); | |
1799 | mb->position = __cpu_to_le64(0); | |
1800 | ||
198d5478 SL |
1801 | crc = crc32c_le(0xffffffff, sb->set_uuid, sizeof(sb->set_uuid)); |
1802 | crc = crc32c_le(crc, (void *)mb, META_BLOCK_SIZE); | |
1803 | mb->checksum = crc; | |
cc1799c3 | 1804 | |
e97a7cd0 | 1805 | if (lseek64(fd, __le64_to_cpu(sb->data_offset) * 512, 0) < 0LL) { |
cc1799c3 SL |
1806 | pr_err("cannot seek to offset of the meta block\n"); |
1807 | goto fail_to_write; | |
1808 | } | |
1809 | ||
1810 | if (awrite(&afd, mb, META_BLOCK_SIZE) != META_BLOCK_SIZE) { | |
1811 | pr_err("failed to store write the meta block \n"); | |
1812 | goto fail_to_write; | |
1813 | } | |
1814 | fsync(fd); | |
1815 | ||
1816 | free(mb); | |
1817 | return 0; | |
1818 | ||
1819 | fail_to_write: | |
1820 | free(mb); | |
1821 | return 1; | |
1822 | } | |
1823 | ||
111d01fc | 1824 | static int write_init_super1(struct supertype *st) |
82d9eba6 | 1825 | { |
3da92f27 | 1826 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1827 | struct supertype *refst; |
111d01fc | 1828 | int rv = 0; |
f21e18ca | 1829 | unsigned long long bm_space; |
111d01fc | 1830 | struct devinfo *di; |
8fac0577 | 1831 | unsigned long long dsize, array_size; |
23bf42cc | 1832 | unsigned long long sb_offset; |
83cd1e97 | 1833 | unsigned long long data_offset; |
1b7eb672 | 1834 | long bm_offset; |
82d9eba6 | 1835 | |
cc1799c3 SL |
1836 | for (di = st->info; di; di = di->next) { |
1837 | if (di->disk.state & (1 << MD_DISK_JOURNAL)) | |
e97a7cd0 | 1838 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_JOURNAL); |
cc1799c3 SL |
1839 | } |
1840 | ||
4687f160 | 1841 | for (di = st->info; di; di = di->next) { |
f4dc5e9b | 1842 | if (di->disk.state & (1 << MD_DISK_FAULTY)) |
111d01fc | 1843 | continue; |
a0c8a17f NB |
1844 | if (di->fd < 0) |
1845 | continue; | |
82d9eba6 | 1846 | |
ba728be7 | 1847 | while (Kill(di->devname, NULL, 0, -1, 1) == 0) |
9277cc77 | 1848 | ; |
82d9eba6 | 1849 | |
111d01fc NB |
1850 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1851 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
adbb382b | 1852 | sb->devflags |= WriteMostly1; |
9a88e7b6 | 1853 | else |
adbb382b | 1854 | sb->devflags &= ~WriteMostly1; |
71574efb N |
1855 | if (di->disk.state & (1<<MD_DISK_FAILFAST)) |
1856 | sb->devflags |= FailFast1; | |
1857 | else | |
1858 | sb->devflags &= ~FailFast1; | |
892debc8 | 1859 | |
c5f71c24 | 1860 | random_uuid(sb->device_uuid); |
83208785 | 1861 | |
01290056 SL |
1862 | if (!(di->disk.state & (1<<MD_DISK_JOURNAL))) |
1863 | sb->events = 0; | |
111d01fc | 1864 | |
e8090005 | 1865 | refst = dup_super(st); |
1011e834 | 1866 | if (load_super1(refst, di->fd, NULL)==0) { |
e8090005 | 1867 | struct mdp_superblock_1 *refsb = refst->sb; |
111d01fc NB |
1868 | |
1869 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1870 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1871 | /* same array, so preserve events and | |
1872 | * dev_number */ | |
1873 | sb->events = refsb->events; | |
1874 | /* bugs in 2.6.17 and earlier mean the | |
1875 | * dev_number chosen in Manage must be preserved | |
1876 | */ | |
1877 | if (get_linux_version() >= 2006018) | |
1878 | sb->dev_number = refsb->dev_number; | |
1879 | } | |
e8090005 | 1880 | free_super1(refst); |
892debc8 | 1881 | } |
e8090005 | 1882 | free(refst); |
34163fc7 | 1883 | |
40114213 JS |
1884 | if (!get_dev_size(di->fd, NULL, &dsize)) { |
1885 | rv = 1; | |
1886 | goto error_out; | |
1887 | } | |
111d01fc | 1888 | dsize >>= 9; |
82d9eba6 | 1889 | |
111d01fc NB |
1890 | if (dsize < 24) { |
1891 | close(di->fd); | |
40114213 JS |
1892 | rv = 2; |
1893 | goto error_out; | |
111d01fc | 1894 | } |
82d9eba6 | 1895 | |
111d01fc NB |
1896 | /* |
1897 | * Calculate the position of the superblock. | |
1898 | * It is always aligned to a 4K boundary and | |
1899 | * depending on minor_version, it can be: | |
1900 | * 0: At least 8K, but less than 12K, from end of device | |
1901 | * 1: At start of device | |
1902 | * 2: 4K from start of device. | |
23bf42cc | 1903 | * data_offset has already been set. |
111d01fc NB |
1904 | */ |
1905 | array_size = __le64_to_cpu(sb->size); | |
1b7eb672 AP |
1906 | |
1907 | /* work out how much space we left for a bitmap */ | |
1908 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1909 | bitmap_super_t *bms = (bitmap_super_t *) | |
1910 | (((char *)sb) + MAX_SB_SIZE); | |
1911 | bm_space = calc_bitmap_size(bms, 4096) >> 9; | |
1912 | bm_offset = (long)__le32_to_cpu(sb->bitmap_offset); | |
e97a7cd0 AP |
1913 | } else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) { |
1914 | bm_space = choose_ppl_space(__le32_to_cpu(sb->chunksize)); | |
1915 | if (bm_space > UINT16_MAX) | |
1916 | bm_space = UINT16_MAX; | |
1917 | if (st->minor_version == 0) { | |
1918 | bm_offset = -bm_space - 8; | |
1919 | if (bm_offset < INT16_MIN) { | |
1920 | bm_offset = INT16_MIN; | |
1921 | bm_space = -bm_offset - 8; | |
1922 | } | |
1923 | } else { | |
1924 | bm_offset = 8; | |
1925 | } | |
1926 | sb->ppl.offset = __cpu_to_le16(bm_offset); | |
1927 | sb->ppl.size = __cpu_to_le16(bm_space); | |
1b7eb672 AP |
1928 | } else { |
1929 | bm_space = choose_bm_space(array_size); | |
1930 | bm_offset = 8; | |
1931 | } | |
111d01fc | 1932 | |
72ca9bcf | 1933 | data_offset = di->data_offset; |
23bf42cc N |
1934 | if (data_offset == INVALID_SECTORS) |
1935 | data_offset = st->data_offset; | |
111d01fc NB |
1936 | switch(st->minor_version) { |
1937 | case 0: | |
1b7eb672 AP |
1938 | /* Add 8 sectors for bad block log */ |
1939 | bm_space += 8; | |
23bf42cc N |
1940 | if (data_offset == INVALID_SECTORS) |
1941 | data_offset = 0; | |
111d01fc NB |
1942 | sb_offset = dsize; |
1943 | sb_offset -= 8*2; | |
1944 | sb_offset &= ~(4*2-1); | |
4c0ea7b0 | 1945 | sb->data_offset = __cpu_to_le64(data_offset); |
111d01fc | 1946 | sb->super_offset = __cpu_to_le64(sb_offset); |
f21e18ca | 1947 | if (sb_offset < array_size + bm_space) |
a380e275 | 1948 | bm_space = sb_offset - array_size; |
111d01fc | 1949 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
bf95d0f3 N |
1950 | if (bm_space >= 8) { |
1951 | sb->bblog_size = __cpu_to_le16(8); | |
1952 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1953 | } | |
111d01fc NB |
1954 | break; |
1955 | case 1: | |
111d01fc | 1956 | case 2: |
1b7eb672 | 1957 | sb_offset = st->minor_version == 2 ? 8 : 0; |
23bf42cc N |
1958 | sb->super_offset = __cpu_to_le64(sb_offset); |
1959 | if (data_offset == INVALID_SECTORS) | |
1b7eb672 | 1960 | data_offset = sb_offset + 16; |
23bf42cc N |
1961 | |
1962 | sb->data_offset = __cpu_to_le64(data_offset); | |
1963 | sb->data_size = __cpu_to_le64(dsize - data_offset); | |
1b7eb672 | 1964 | if (data_offset >= sb_offset+bm_offset+bm_space+8) { |
f79bbf4f | 1965 | sb->bblog_size = __cpu_to_le16(8); |
1b7eb672 AP |
1966 | sb->bblog_offset = __cpu_to_le32(bm_offset + |
1967 | bm_space); | |
1968 | } else if (data_offset >= sb_offset + 16) { | |
bf95d0f3 | 1969 | sb->bblog_size = __cpu_to_le16(8); |
1b7eb672 | 1970 | /* '8' sectors for the bblog, and 'sb_offset' |
bf95d0f3 N |
1971 | * because we want offset from superblock, not |
1972 | * start of device. | |
1973 | */ | |
1b7eb672 AP |
1974 | sb->bblog_offset = __cpu_to_le32(data_offset - |
1975 | 8 - sb_offset); | |
bf95d0f3 | 1976 | } |
111d01fc NB |
1977 | break; |
1978 | default: | |
7a862a02 | 1979 | pr_err("Failed to write invalid metadata format 1.%i to %s\n", |
e7b84f9d | 1980 | st->minor_version, di->devname); |
40114213 JS |
1981 | rv = -EINVAL; |
1982 | goto out; | |
111d01fc | 1983 | } |
86a406c2 N |
1984 | /* Disable badblock log on clusters, or when explicitly requested */ |
1985 | if (st->nodes > 0 || conf_get_create_info()->bblist == 0) { | |
e2efe9e7 N |
1986 | sb->bblog_size = 0; |
1987 | sb->bblog_offset = 0; | |
1988 | } | |
82d9eba6 | 1989 | |
111d01fc NB |
1990 | sb->sb_csum = calc_sb_1_csum(sb); |
1991 | rv = store_super1(st, di->fd); | |
cc1799c3 SL |
1992 | |
1993 | if (rv == 0 && (di->disk.state & (1 << MD_DISK_JOURNAL))) { | |
1994 | rv = write_empty_r5l_meta_block(st, di->fd); | |
1995 | if (rv) | |
1996 | goto error_out; | |
1997 | } | |
1998 | ||
e97a7cd0 AP |
1999 | if (rv == 0 && |
2000 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) { | |
81306e02 | 2001 | rv = st->ss->write_bitmap(st, di->fd, NodeNumUpdate); |
e97a7cd0 AP |
2002 | } else if (rv == 0 && |
2003 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_PPL)) { | |
2004 | struct mdinfo info; | |
2005 | ||
2006 | st->ss->getinfo_super(st, &info, NULL); | |
2007 | rv = st->ss->write_init_ppl(st, &info, di->fd); | |
2008 | } | |
2009 | ||
111d01fc NB |
2010 | close(di->fd); |
2011 | di->fd = -1; | |
4687f160 | 2012 | if (rv) |
2013 | goto error_out; | |
111d01fc | 2014 | } |
40114213 JS |
2015 | error_out: |
2016 | if (rv) | |
e7b84f9d N |
2017 | pr_err("Failed to write metadata to %s\n", |
2018 | di->devname); | |
40114213 | 2019 | out: |
82d9eba6 NB |
2020 | return rv; |
2021 | } | |
2022 | ||
64557c33 | 2023 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
2024 | { |
2025 | /* | |
2026 | * return: | |
2027 | * 0 same, or first was empty, and second was copied | |
2028 | * 1 second had wrong number | |
2029 | * 2 wrong uuid | |
2030 | * 3 wrong other info | |
2031 | */ | |
64557c33 NB |
2032 | struct mdp_superblock_1 *first = st->sb; |
2033 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
2034 | |
2035 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
2036 | return 1; | |
2037 | if (second->major_version != __cpu_to_le32(1)) | |
2038 | return 1; | |
2039 | ||
2040 | if (!first) { | |
3c0bcd46 | 2041 | if (posix_memalign((void**)&first, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 2042 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
2043 | return 1; |
2044 | } | |
41226756 | 2045 | memcpy(first, second, SUPER1_SIZE); |
64557c33 | 2046 | st->sb = first; |
82d9eba6 NB |
2047 | return 0; |
2048 | } | |
2049 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
2050 | return 2; | |
2051 | ||
2052 | if (first->ctime != second->ctime || | |
2053 | first->level != second->level || | |
2054 | first->layout != second->layout || | |
2055 | first->size != second->size || | |
2056 | first->chunksize != second->chunksize || | |
2057 | first->raid_disks != second->raid_disks) | |
2058 | return 3; | |
2059 | return 0; | |
2060 | } | |
2061 | ||
3da92f27 | 2062 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 2063 | { |
5dd497ee | 2064 | unsigned long long dsize; |
82d9eba6 NB |
2065 | unsigned long long sb_offset; |
2066 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
2067 | int uuid[4]; |
2068 | struct bitmap_super_s *bsb; | |
bee8ec56 | 2069 | struct misc_dev_info *misc; |
308340aa | 2070 | struct align_fd afd; |
82d9eba6 | 2071 | |
3da92f27 | 2072 | free_super1(st); |
82d9eba6 | 2073 | |
308340aa JS |
2074 | init_afd(&afd, fd); |
2075 | ||
a17a3de3 | 2076 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 2077 | int bestvers = -1; |
23dc1ae8 | 2078 | struct supertype tst; |
570c0542 NB |
2079 | __u64 bestctime = 0; |
2080 | /* guess... choose latest ctime */ | |
ef609477 | 2081 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
2082 | tst.ss = &super1; |
2083 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
2084 | switch(load_super1(&tst, fd, devname)) { |
2085 | case 0: super = tst.sb; | |
570c0542 NB |
2086 | if (bestvers == -1 || |
2087 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 2088 | bestvers = tst.minor_version; |
570c0542 NB |
2089 | bestctime = __le64_to_cpu(super->ctime); |
2090 | } | |
2091 | free(super); | |
3da92f27 | 2092 | tst.sb = NULL; |
570c0542 | 2093 | break; |
23dc1ae8 | 2094 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
2095 | case 2: break; /* bad, try next */ |
2096 | } | |
2097 | } | |
570c0542 NB |
2098 | if (bestvers != -1) { |
2099 | int rv; | |
23dc1ae8 NB |
2100 | tst.minor_version = bestvers; |
2101 | tst.ss = &super1; | |
911cead7 | 2102 | tst.max_devs = MAX_DEVS; |
3da92f27 | 2103 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
2104 | if (rv == 0) |
2105 | *st = tst; | |
570c0542 NB |
2106 | return rv; |
2107 | } | |
82d9eba6 NB |
2108 | return 2; |
2109 | } | |
beae1dfe NB |
2110 | if (!get_dev_size(fd, devname, &dsize)) |
2111 | return 1; | |
2112 | dsize >>= 9; | |
82d9eba6 | 2113 | |
5dd497ee | 2114 | if (dsize < 24) { |
82d9eba6 | 2115 | if (devname) |
e7b84f9d | 2116 | pr_err("%s is too small for md: size is %llu sectors.\n", |
5dd497ee | 2117 | devname, dsize); |
82d9eba6 NB |
2118 | return 1; |
2119 | } | |
2120 | ||
2121 | /* | |
2122 | * Calculate the position of the superblock. | |
2123 | * It is always aligned to a 4K boundary and | |
14263cf1 | 2124 | * depending on minor_version, it can be: |
82d9eba6 NB |
2125 | * 0: At least 8K, but less than 12K, from end of device |
2126 | * 1: At start of device | |
2127 | * 2: 4K from start of device. | |
2128 | */ | |
2129 | switch(st->minor_version) { | |
2130 | case 0: | |
5dd497ee | 2131 | sb_offset = dsize; |
82d9eba6 NB |
2132 | sb_offset -= 8*2; |
2133 | sb_offset &= ~(4*2-1); | |
2134 | break; | |
2135 | case 1: | |
2136 | sb_offset = 0; | |
2137 | break; | |
2138 | case 2: | |
2139 | sb_offset = 4*2; | |
2140 | break; | |
2141 | default: | |
2142 | return -EINVAL; | |
2143 | } | |
2144 | ||
82d9eba6 NB |
2145 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { |
2146 | if (devname) | |
e7b84f9d | 2147 | pr_err("Cannot seek to superblock on %s: %s\n", |
82d9eba6 NB |
2148 | devname, strerror(errno)); |
2149 | return 1; | |
2150 | } | |
2151 | ||
3c0bcd46 | 2152 | if (posix_memalign((void**)&super, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 2153 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
2154 | return 1; |
2155 | } | |
82d9eba6 | 2156 | |
1dcee1c9 JS |
2157 | memset(super, 0, SUPER1_SIZE); |
2158 | ||
308340aa | 2159 | if (aread(&afd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { |
82d9eba6 | 2160 | if (devname) |
e7b84f9d | 2161 | pr_err("Cannot read superblock on %s\n", |
82d9eba6 NB |
2162 | devname); |
2163 | free(super); | |
2164 | return 1; | |
2165 | } | |
2166 | ||
2167 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
2168 | if (devname) | |
e7b84f9d | 2169 | pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", |
82d9eba6 NB |
2170 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); |
2171 | free(super); | |
2172 | return 2; | |
2173 | } | |
2174 | ||
2175 | if (__le32_to_cpu(super->major_version) != 1) { | |
2176 | if (devname) | |
e7b84f9d | 2177 | pr_err("Cannot interpret superblock on %s - version is %d\n", |
82d9eba6 NB |
2178 | devname, __le32_to_cpu(super->major_version)); |
2179 | free(super); | |
2180 | return 2; | |
2181 | } | |
2182 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
2183 | if (devname) | |
e7b84f9d | 2184 | pr_err("No superblock found on %s (super_offset is wrong)\n", |
82d9eba6 NB |
2185 | devname); |
2186 | free(super); | |
2187 | return 2; | |
2188 | } | |
64557c33 | 2189 | st->sb = super; |
14263cf1 | 2190 | |
911cead7 | 2191 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
bee8ec56 | 2192 | |
911cead7 | 2193 | misc = (struct misc_dev_info*) (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE); |
bee8ec56 | 2194 | misc->device_size = dsize; |
23bf42cc N |
2195 | if (st->data_offset == INVALID_SECTORS) |
2196 | st->data_offset = __le64_to_cpu(super->data_offset); | |
bee8ec56 | 2197 | |
14263cf1 NB |
2198 | /* Now check on the bitmap superblock */ |
2199 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
2200 | return 0; | |
2201 | /* Read the bitmap superblock and make sure it looks | |
2202 | * valid. If it doesn't clear the bit. An --assemble --force | |
2203 | * should get that written out. | |
2204 | */ | |
b138214f | 2205 | locate_bitmap1(st, fd, 0); |
308340aa | 2206 | if (aread(&afd, bsb, 512) != 512) |
14263cf1 NB |
2207 | goto no_bitmap; |
2208 | ||
3da92f27 | 2209 | uuid_from_super1(st, uuid); |
14263cf1 NB |
2210 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
2211 | memcmp(bsb->uuid, uuid, 16) != 0) | |
2212 | goto no_bitmap; | |
2213 | return 0; | |
2214 | ||
2215 | no_bitmap: | |
c0c1acd6 N |
2216 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) |
2217 | & ~MD_FEATURE_BITMAP_OFFSET); | |
82d9eba6 NB |
2218 | return 0; |
2219 | } | |
2220 | ||
82d9eba6 NB |
2221 | static struct supertype *match_metadata_desc1(char *arg) |
2222 | { | |
503975b9 | 2223 | struct supertype *st = xcalloc(1, sizeof(*st)); |
82d9eba6 | 2224 | |
4dd2df09 | 2225 | st->container_devnm[0] = 0; |
82d9eba6 | 2226 | st->ss = &super1; |
911cead7 | 2227 | st->max_devs = MAX_DEVS; |
64557c33 | 2228 | st->sb = NULL; |
23bf42cc | 2229 | st->data_offset = INVALID_SECTORS; |
9b2a22d3 N |
2230 | /* leading zeros can be safely ignored. --detail generates them. */ |
2231 | while (*arg == '0') | |
2232 | arg++; | |
2233 | if (strcmp(arg, "1.0") == 0 || | |
2234 | strcmp(arg, "1.00") == 0) { | |
82d9eba6 NB |
2235 | st->minor_version = 0; |
2236 | return st; | |
2237 | } | |
9b2a22d3 | 2238 | if (strcmp(arg, "1.1") == 0 || |
50827504 | 2239 | strcmp(arg, "1.01") == 0 |
7d5c3964 | 2240 | ) { |
82d9eba6 NB |
2241 | st->minor_version = 1; |
2242 | return st; | |
2243 | } | |
9b2a22d3 | 2244 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 2245 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 2246 | strcmp(arg, "default") == 0 || |
26f467a9 | 2247 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 2248 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
2249 | st->minor_version = 2; |
2250 | return st; | |
2251 | } | |
a17a3de3 | 2252 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 2253 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
2254 | st->minor_version = -1; |
2255 | return st; | |
2256 | } | |
82d9eba6 NB |
2257 | |
2258 | free(st); | |
2259 | return NULL; | |
2260 | } | |
2261 | ||
34163fc7 NB |
2262 | /* find available size on device with this devsize, using |
2263 | * superblock type st, and reserving 'reserve' sectors for | |
2264 | * a possible bitmap | |
2265 | */ | |
641da745 N |
2266 | static __u64 avail_size1(struct supertype *st, __u64 devsize, |
2267 | unsigned long long data_offset) | |
82d9eba6 | 2268 | { |
2a528478 | 2269 | struct mdp_superblock_1 *super = st->sb; |
387fcd59 | 2270 | int bmspace = 0; |
23bf42cc | 2271 | int bbspace = 0; |
82d9eba6 NB |
2272 | if (devsize < 24) |
2273 | return 0; | |
2274 | ||
e97a7cd0 | 2275 | if (__le32_to_cpu(super->feature_map) & MD_FEATURE_BITMAP_OFFSET) { |
2a528478 N |
2276 | /* hot-add. allow for actual size of bitmap */ |
2277 | struct bitmap_super_s *bsb; | |
911cead7 | 2278 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
561ad559 | 2279 | bmspace = calc_bitmap_size(bsb, 4096) >> 9; |
e97a7cd0 AP |
2280 | } else if (__le32_to_cpu(super->feature_map) & MD_FEATURE_PPL) { |
2281 | bmspace = __le16_to_cpu(super->ppl.size); | |
2a528478 | 2282 | } |
32141c17 | 2283 | |
88af981f | 2284 | /* Allow space for bad block log */ |
641da745 | 2285 | if (super->bblog_size) |
23bf42cc | 2286 | bbspace = __le16_to_cpu(super->bblog_size); |
21e92547 | 2287 | |
a380e275 N |
2288 | if (st->minor_version < 0) |
2289 | /* not specified, so time to set default */ | |
2290 | st->minor_version = 2; | |
387fcd59 | 2291 | |
23bf42cc N |
2292 | if (data_offset == INVALID_SECTORS) |
2293 | data_offset = st->data_offset; | |
2294 | ||
387fcd59 N |
2295 | if (data_offset != INVALID_SECTORS) |
2296 | switch(st->minor_version) { | |
2297 | case 0: | |
23bf42cc | 2298 | return devsize - data_offset - 8*2 - bbspace; |
387fcd59 N |
2299 | case 1: |
2300 | case 2: | |
2301 | return devsize - data_offset; | |
2302 | default: | |
2303 | return 0; | |
2304 | } | |
2305 | ||
2306 | devsize -= bmspace; | |
2307 | ||
34163fc7 NB |
2308 | switch(st->minor_version) { |
2309 | case 0: | |
1bf4e2d9 | 2310 | /* at end */ |
23bf42cc | 2311 | return ((devsize - 8*2 - bbspace ) & ~(4*2-1)); |
34163fc7 | 2312 | case 1: |
1bf4e2d9 | 2313 | /* at start, 4K for superblock and possible bitmap */ |
23bf42cc | 2314 | return devsize - 4*2 - bbspace; |
34163fc7 | 2315 | case 2: |
1bf4e2d9 | 2316 | /* 4k from start, 4K for superblock and possible bitmap */ |
23bf42cc | 2317 | return devsize - (4+4)*2 - bbspace; |
34163fc7 NB |
2318 | } |
2319 | return 0; | |
2320 | } | |
2321 | ||
1bf4e2d9 | 2322 | static int |
3da92f27 | 2323 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
2324 | int *chunkp, int delay, int write_behind, |
2325 | unsigned long long size, | |
21e92547 | 2326 | int may_change, int major) |
34163fc7 NB |
2327 | { |
2328 | /* | |
c0c1acd6 N |
2329 | * If not may_change, then this is a 'Grow' without sysfs support for |
2330 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
2331 | * If may_change, then this is create or a Grow with sysfs syupport, | |
2332 | * and we can put the bitmap wherever we like. | |
34163fc7 | 2333 | * |
f9c25f1d | 2334 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
2335 | */ |
2336 | ||
1bf4e2d9 | 2337 | unsigned long long bits; |
199171a2 | 2338 | unsigned long long max_bits; |
34163fc7 | 2339 | unsigned long long min_chunk; |
199171a2 | 2340 | long offset; |
88af981f | 2341 | long bbl_offset, bbl_size; |
f21e18ca | 2342 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 2343 | int room = 0; |
c0c1acd6 | 2344 | int creating = 0; |
4b3eb4d2 | 2345 | int len; |
3da92f27 | 2346 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2347 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
3b7e9d0c | 2348 | int uuid[4]; |
34163fc7 | 2349 | |
c0c1acd6 N |
2350 | if (__le64_to_cpu(sb->data_size) == 0) |
2351 | /* Must be creating the array, else data_size would be non-zero */ | |
2352 | creating = 1; | |
199171a2 NB |
2353 | switch(st->minor_version) { |
2354 | case 0: | |
a31128d2 N |
2355 | /* either 3K after the superblock (when hot-add), |
2356 | * or some amount of space before. | |
199171a2 | 2357 | */ |
c0c1acd6 | 2358 | if (creating) { |
199171a2 NB |
2359 | /* We are creating array, so we *know* how much room has |
2360 | * been left. | |
2361 | */ | |
2362 | offset = 0; | |
88af981f | 2363 | bbl_size = 8; |
6ac17e73 | 2364 | room = choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; |
199171a2 NB |
2365 | } else { |
2366 | room = __le64_to_cpu(sb->super_offset) | |
2367 | - __le64_to_cpu(sb->data_offset) | |
2368 | - __le64_to_cpu(sb->data_size); | |
88af981f N |
2369 | bbl_size = __le16_to_cpu(sb->bblog_size); |
2370 | if (bbl_size < 8) | |
2371 | bbl_size = 8; | |
2372 | bbl_offset = (__s32)__le32_to_cpu(sb->bblog_offset); | |
2373 | if (bbl_size < -bbl_offset) | |
2374 | bbl_size = -bbl_offset; | |
c0c1acd6 N |
2375 | |
2376 | if (!may_change || (room < 3*2 && | |
7716570e | 2377 | __le32_to_cpu(sb->max_dev) <= 384)) { |
199171a2 NB |
2378 | room = 3*2; |
2379 | offset = 1*2; | |
88af981f | 2380 | bbl_size = 0; |
199171a2 NB |
2381 | } else { |
2382 | offset = 0; /* means movable offset */ | |
2383 | } | |
2384 | } | |
2385 | break; | |
2386 | case 1: | |
2387 | case 2: /* between superblock and data */ | |
c0c1acd6 | 2388 | if (creating) { |
199171a2 | 2389 | offset = 4*2; |
88af981f | 2390 | bbl_size = 8; |
6ac17e73 | 2391 | room = choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; |
199171a2 NB |
2392 | } else { |
2393 | room = __le64_to_cpu(sb->data_offset) | |
2394 | - __le64_to_cpu(sb->super_offset); | |
88af981f N |
2395 | bbl_size = __le16_to_cpu(sb->bblog_size); |
2396 | if (bbl_size) | |
2397 | room = __le32_to_cpu(sb->bblog_offset) + bbl_size; | |
2398 | else | |
2399 | bbl_size = 8; | |
2400 | ||
c0c1acd6 N |
2401 | if (!may_change) { |
2402 | room -= 2; /* Leave 1K for superblock */ | |
199171a2 | 2403 | offset = 2; |
88af981f | 2404 | bbl_size = 0; |
199171a2 | 2405 | } else { |
c0c1acd6 | 2406 | room -= 4*2; /* leave 4K for superblock */ |
199171a2 NB |
2407 | offset = 4*2; |
2408 | } | |
2409 | } | |
2410 | break; | |
ae491d1e | 2411 | default: |
2ec2b7e9 | 2412 | return -ENOSPC; |
199171a2 | 2413 | } |
1bf4e2d9 | 2414 | |
88af981f | 2415 | room -= bbl_size; |
199171a2 NB |
2416 | if (chunk == UnSet && room > 128*2) |
2417 | /* Limit to 128K of bitmap when chunk size not requested */ | |
2418 | room = 128*2; | |
1bf4e2d9 | 2419 | |
268cccac N |
2420 | if (room <= 1) |
2421 | /* No room for a bitmap */ | |
2ec2b7e9 | 2422 | return -ENOSPC; |
268cccac | 2423 | |
199171a2 | 2424 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
2425 | |
2426 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 2427 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
2428 | while (bits > max_bits) { |
2429 | min_chunk *= 2; | |
2430 | bits = (bits+1)/2; | |
2431 | } | |
b8ab2a50 N |
2432 | if (chunk == UnSet) { |
2433 | /* For practical purpose, 64Meg is a good | |
2434 | * default chunk size for internal bitmaps. | |
2435 | */ | |
34163fc7 | 2436 | chunk = min_chunk; |
b8ab2a50 N |
2437 | if (chunk < 64*1024*1024) |
2438 | chunk = 64*1024*1024; | |
2439 | } else if (chunk < min_chunk) | |
2ec2b7e9 | 2440 | return -EINVAL; /* chunk size too small */ |
21e92547 | 2441 | if (chunk == 0) /* rounding problem */ |
2ec2b7e9 | 2442 | return -EINVAL; |
34163fc7 | 2443 | |
199171a2 | 2444 | if (offset == 0) { |
a31128d2 N |
2445 | /* start bitmap on a 4K boundary with enough space for |
2446 | * the bitmap | |
2447 | */ | |
199171a2 | 2448 | bits = (size*512) / chunk + 1; |
a31128d2 N |
2449 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
2450 | room *= 8; /* convert 4K blocks to sectors */ | |
88af981f | 2451 | offset = -room - bbl_size; |
199171a2 NB |
2452 | } |
2453 | ||
34a13953 | 2454 | sb->bitmap_offset = (int32_t)__cpu_to_le32(offset); |
34163fc7 | 2455 | |
c0c1acd6 N |
2456 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) |
2457 | | MD_FEATURE_BITMAP_OFFSET); | |
29e766a5 | 2458 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 2459 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 2460 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
2461 | uuid_from_super1(st, uuid); |
2462 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
2463 | bms->chunksize = __cpu_to_le32(chunk); |
2464 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 2465 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 | 2466 | bms->write_behind = __cpu_to_le32(write_behind); |
529e2aa5 | 2467 | bms->nodes = __cpu_to_le32(st->nodes); |
6d9c7c25 GR |
2468 | if (st->nodes) |
2469 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | |
2470 | | MD_FEATURE_BITMAP_VERSIONED); | |
4b3eb4d2 JS |
2471 | if (st->cluster_name) { |
2472 | len = sizeof(bms->cluster_name); | |
2473 | strncpy((char *)bms->cluster_name, st->cluster_name, len); | |
2474 | bms->cluster_name[len - 1] = '\0'; | |
2475 | } | |
34163fc7 | 2476 | |
199171a2 | 2477 | *chunkp = chunk; |
2ec2b7e9 | 2478 | return 0; |
34163fc7 NB |
2479 | } |
2480 | ||
b138214f | 2481 | static int locate_bitmap1(struct supertype *st, int fd, int node_num) |
34163fc7 | 2482 | { |
34163fc7 | 2483 | unsigned long long offset; |
1e0d770c NB |
2484 | struct mdp_superblock_1 *sb; |
2485 | int mustfree = 0; | |
53e76b1d | 2486 | int ret; |
34163fc7 | 2487 | |
3da92f27 NB |
2488 | if (!st->sb) { |
2489 | if (st->ss->load_super(st, fd, NULL)) | |
53e76b1d | 2490 | return -1; /* no error I hope... */ |
1e0d770c NB |
2491 | mustfree = 1; |
2492 | } | |
3da92f27 | 2493 | sb = st->sb; |
e478dc86 | 2494 | |
53e76b1d GJ |
2495 | if ((__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) |
2496 | ret = 0; | |
2497 | else | |
2498 | ret = -1; | |
1bf4e2d9 | 2499 | offset = __le64_to_cpu(sb->super_offset); |
b138214f | 2500 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset) * (node_num + 1); |
1e0d770c | 2501 | if (mustfree) |
f6d75de8 | 2502 | free(sb); |
1bf4e2d9 | 2503 | lseek64(fd, offset<<9, 0); |
53e76b1d | 2504 | return ret; |
34163fc7 NB |
2505 | } |
2506 | ||
0aa2f15b | 2507 | static int write_bitmap1(struct supertype *st, int fd, enum bitmap_update update) |
34163fc7 | 2508 | { |
3da92f27 | 2509 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2510 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
34163fc7 | 2511 | int rv = 0; |
d669228f | 2512 | void *buf; |
4b3eb4d2 | 2513 | int towrite, n, len; |
308340aa | 2514 | struct align_fd afd; |
95a05b37 | 2515 | unsigned int i = 0; |
7e6e839a | 2516 | unsigned long long total_bm_space, bm_space_per_node; |
308340aa | 2517 | |
0aa2f15b GJ |
2518 | switch (update) { |
2519 | case NameUpdate: | |
2520 | /* update cluster name */ | |
2521 | if (st->cluster_name) { | |
4b3eb4d2 JS |
2522 | len = sizeof(bms->cluster_name); |
2523 | memset((char *)bms->cluster_name, 0, len); | |
2524 | strncpy((char *)bms->cluster_name, | |
2525 | st->cluster_name, len); | |
2526 | bms->cluster_name[len - 1] = '\0'; | |
0aa2f15b GJ |
2527 | } |
2528 | break; | |
7e6e839a GJ |
2529 | case NodeNumUpdate: |
2530 | /* cluster md only supports superblock 1.2 now */ | |
bbc24bb3 | 2531 | if (st->minor_version != 2 && bms->version == BITMAP_MAJOR_CLUSTERED) { |
7e6e839a GJ |
2532 | pr_err("Warning: cluster md only works with superblock 1.2\n"); |
2533 | return -EINVAL; | |
2534 | } | |
2535 | ||
45a87c2f | 2536 | if (bms->version == BITMAP_MAJOR_CLUSTERED) { |
9d67f649 | 2537 | if (__cpu_to_le32(st->nodes) < bms->nodes) { |
45a87c2f GJ |
2538 | /* Since the nodes num is not increased, no need to check the space |
2539 | * is enough or not, just update bms->nodes */ | |
2540 | bms->nodes = __cpu_to_le32(st->nodes); | |
2541 | break; | |
2542 | } | |
2543 | } else { | |
2544 | /* no need to change bms->nodes for other bitmap types */ | |
2545 | if (st->nodes) | |
2546 | pr_err("Warning: --nodes option is only suitable for clustered bitmap\n"); | |
2547 | break; | |
261b57fe GJ |
2548 | } |
2549 | ||
7e6e839a GJ |
2550 | /* Each node has an independent bitmap, it is necessary to calculate the |
2551 | * space is enough or not, first get how many bytes for the total bitmap */ | |
2552 | bm_space_per_node = calc_bitmap_size(bms, 4096); | |
2553 | ||
2554 | total_bm_space = 512 * (__le64_to_cpu(sb->data_offset) - __le64_to_cpu(sb->super_offset)); | |
2555 | total_bm_space = total_bm_space - 4096; /* leave another 4k for superblock */ | |
2556 | ||
2557 | if (bm_space_per_node * st->nodes > total_bm_space) { | |
2558 | pr_err("Warning: The max num of nodes can't exceed %llu\n", | |
2559 | total_bm_space / bm_space_per_node); | |
2560 | return -ENOMEM; | |
2561 | } | |
2562 | ||
2563 | bms->nodes = __cpu_to_le32(st->nodes); | |
2564 | break; | |
0aa2f15b GJ |
2565 | case NoUpdate: |
2566 | default: | |
2567 | break; | |
2568 | } | |
2569 | ||
308340aa | 2570 | init_afd(&afd, fd); |
34163fc7 | 2571 | |
b138214f | 2572 | locate_bitmap1(st, fd, 0); |
34163fc7 | 2573 | |
d669228f JS |
2574 | if (posix_memalign(&buf, 4096, 4096)) |
2575 | return -ENOMEM; | |
2576 | ||
95a05b37 GJ |
2577 | do { |
2578 | /* Only the bitmap[0] should resync | |
2579 | * whole device on initial assembly | |
2580 | */ | |
2581 | if (i) | |
2582 | memset(buf, 0x00, 4096); | |
34163fc7 | 2583 | else |
95a05b37 GJ |
2584 | memset(buf, 0xff, 4096); |
2585 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); | |
2586 | ||
119b66a4 GJ |
2587 | /* |
2588 | * use 4096 boundary if bitmap_offset is aligned | |
2589 | * with 8 sectors, then it should compatible with | |
2590 | * older mdadm. | |
2591 | */ | |
2592 | if (__le32_to_cpu(sb->bitmap_offset) & 7) | |
2593 | towrite = calc_bitmap_size(bms, 512); | |
2594 | else | |
2595 | towrite = calc_bitmap_size(bms, 4096); | |
95a05b37 GJ |
2596 | while (towrite > 0) { |
2597 | n = towrite; | |
2598 | if (n > 4096) | |
2599 | n = 4096; | |
2600 | n = awrite(&afd, buf, n); | |
2601 | if (n > 0) | |
2602 | towrite -= n; | |
2603 | else | |
2604 | break; | |
2605 | if (i) | |
2606 | memset(buf, 0x00, 4096); | |
2607 | else | |
2608 | memset(buf, 0xff, 4096); | |
2609 | } | |
2610 | fsync(fd); | |
2611 | if (towrite) { | |
2612 | rv = -2; | |
34163fc7 | 2613 | break; |
95a05b37 GJ |
2614 | } |
2615 | } while (++i < __le32_to_cpu(bms->nodes)); | |
34163fc7 | 2616 | |
d669228f | 2617 | free(buf); |
34163fc7 | 2618 | return rv; |
82d9eba6 NB |
2619 | } |
2620 | ||
3da92f27 | 2621 | static void free_super1(struct supertype *st) |
df37ffc0 | 2622 | { |
d15a1f72 | 2623 | |
3da92f27 NB |
2624 | if (st->sb) |
2625 | free(st->sb); | |
1cc7f4fe N |
2626 | while (st->info) { |
2627 | struct devinfo *di = st->info; | |
2628 | st->info = di->next; | |
2629 | if (di->fd >= 0) | |
2630 | close(di->fd); | |
2631 | free(di); | |
2632 | } | |
3da92f27 | 2633 | st->sb = NULL; |
df37ffc0 NB |
2634 | } |
2635 | ||
17f25ca6 NB |
2636 | static int validate_geometry1(struct supertype *st, int level, |
2637 | int layout, int raiddisks, | |
c21e737b | 2638 | int *chunk, unsigned long long size, |
af4348dd | 2639 | unsigned long long data_offset, |
2c514b71 | 2640 | char *subdev, unsigned long long *freesize, |
5308f117 | 2641 | int consistency_policy, int verbose) |
17f25ca6 | 2642 | { |
641da745 N |
2643 | unsigned long long ldsize, devsize; |
2644 | int bmspace; | |
23bf42cc | 2645 | unsigned long long headroom; |
17f25ca6 NB |
2646 | int fd; |
2647 | ||
b42f577a N |
2648 | if (level == LEVEL_CONTAINER) { |
2649 | if (verbose) | |
e7b84f9d | 2650 | pr_err("1.x metadata does not support containers\n"); |
17f25ca6 | 2651 | return 0; |
b42f577a | 2652 | } |
7ccc4cc4 | 2653 | if (*chunk == UnSet) |
bb7295f1 N |
2654 | *chunk = DEFAULT_CHUNK; |
2655 | ||
17f25ca6 NB |
2656 | if (!subdev) |
2657 | return 1; | |
2658 | ||
23bf42cc N |
2659 | if (st->minor_version < 0) |
2660 | /* not specified, so time to set default */ | |
2661 | st->minor_version = 2; | |
2662 | ||
17f25ca6 NB |
2663 | fd = open(subdev, O_RDONLY|O_EXCL, 0); |
2664 | if (fd < 0) { | |
2c514b71 | 2665 | if (verbose) |
e7b84f9d | 2666 | pr_err("super1.x cannot open %s: %s\n", |
2c514b71 | 2667 | subdev, strerror(errno)); |
17f25ca6 NB |
2668 | return 0; |
2669 | } | |
2c514b71 | 2670 | |
17f25ca6 NB |
2671 | if (!get_dev_size(fd, subdev, &ldsize)) { |
2672 | close(fd); | |
2673 | return 0; | |
2674 | } | |
2675 | close(fd); | |
2676 | ||
641da745 N |
2677 | devsize = ldsize >> 9; |
2678 | if (devsize < 24) { | |
2679 | *freesize = 0; | |
2680 | return 0; | |
2681 | } | |
2682 | ||
e97a7cd0 AP |
2683 | /* creating: allow suitable space for bitmap or PPL */ |
2684 | bmspace = consistency_policy == CONSISTENCY_POLICY_PPL ? | |
2685 | choose_ppl_space((*chunk)*2) : choose_bm_space(devsize); | |
641da745 | 2686 | |
23bf42cc N |
2687 | if (data_offset == INVALID_SECTORS) |
2688 | data_offset = st->data_offset; | |
2689 | if (data_offset == INVALID_SECTORS) | |
2690 | switch (st->minor_version) { | |
641da745 | 2691 | case 0: |
23bf42cc N |
2692 | data_offset = 0; |
2693 | break; | |
641da745 N |
2694 | case 1: |
2695 | case 2: | |
23bf42cc N |
2696 | /* Choose data offset appropriate for this device |
2697 | * and use as default for whole array. | |
2698 | * The data_offset must allow for bitmap space | |
2699 | * and base metadata, should allow for some headroom | |
2700 | * for reshape, and should be rounded to multiple | |
2701 | * of 1M. | |
2702 | * Headroom is limited to 128M, but aim for about 0.1% | |
641da745 | 2703 | */ |
23bf42cc | 2704 | headroom = 128*1024*2; |
641da745 N |
2705 | while ((headroom << 10) > devsize && |
2706 | (*chunk == 0 || | |
2707 | headroom / 2 >= ((unsigned)(*chunk)*2)*2)) | |
2708 | headroom >>= 1; | |
23bf42cc N |
2709 | data_offset = 12*2 + bmspace + headroom; |
2710 | #define ONE_MEG (2*1024) | |
2711 | if (data_offset > ONE_MEG) | |
2712 | data_offset = (data_offset / ONE_MEG) * ONE_MEG; | |
641da745 N |
2713 | break; |
2714 | } | |
23bf42cc N |
2715 | if (st->data_offset == INVALID_SECTORS) |
2716 | st->data_offset = data_offset; | |
2717 | switch(st->minor_version) { | |
2718 | case 0: /* metadata at end. Round down and subtract space to reserve */ | |
2719 | devsize = (devsize & ~(4ULL*2-1)); | |
e97a7cd0 | 2720 | /* space for metadata, bblog, bitmap/ppl */ |
4c0ea7b0 | 2721 | devsize -= 8*2 + 8 + bmspace; |
23bf42cc N |
2722 | break; |
2723 | case 1: | |
2724 | case 2: | |
2725 | devsize -= data_offset; | |
2726 | break; | |
641da745 | 2727 | } |
23bf42cc | 2728 | *freesize = devsize; |
17f25ca6 NB |
2729 | return 1; |
2730 | } | |
2731 | ||
afa368f4 N |
2732 | void *super1_make_v0(struct supertype *st, struct mdinfo *info, mdp_super_t *sb0) |
2733 | { | |
2734 | /* Create a v1.0 superblock based on 'info'*/ | |
2735 | void *ret; | |
2736 | struct mdp_superblock_1 *sb; | |
2737 | int i; | |
afa368f4 N |
2738 | unsigned long long offset; |
2739 | ||
2740 | if (posix_memalign(&ret, 4096, 1024) != 0) | |
2741 | return NULL; | |
2742 | sb = ret; | |
2743 | memset(ret, 0, 1024); | |
2744 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); | |
2745 | sb->major_version = __cpu_to_le32(1); | |
2746 | ||
2747 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); | |
2748 | sprintf(sb->set_name, "%d", sb0->md_minor); | |
2749 | sb->ctime = __cpu_to_le32(info->array.ctime+1); | |
2750 | sb->level = __cpu_to_le32(info->array.level); | |
2751 | sb->layout = __cpu_to_le32(info->array.layout); | |
2752 | sb->size = __cpu_to_le64(info->component_size); | |
2753 | sb->chunksize = __cpu_to_le32(info->array.chunk_size/512); | |
2754 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); | |
ccec2685 N |
2755 | if (info->array.level > 0) |
2756 | sb->data_size = sb->size; | |
2757 | else | |
2758 | sb->data_size = st->ss->avail_size(st, st->devsize/512, 0); | |
afa368f4 N |
2759 | sb->resync_offset = MaxSector; |
2760 | sb->max_dev = __cpu_to_le32(MD_SB_DISKS); | |
2761 | sb->dev_number = __cpu_to_le32(info->disk.number); | |
2762 | sb->utime = __cpu_to_le64(info->array.utime); | |
2763 | ||
2764 | offset = st->devsize/512 - 8*2; | |
2765 | offset &= ~(4*2-1); | |
2766 | sb->super_offset = __cpu_to_le64(offset); | |
2767 | //*(__u64*)(st->other + 128 + 8 + 8) = __cpu_to_le64(offset); | |
2768 | ||
c5f71c24 | 2769 | random_uuid(sb->device_uuid); |
afa368f4 N |
2770 | |
2771 | for (i = 0; i < MD_SB_DISKS; i++) { | |
2772 | int state = sb0->disks[i].state; | |
fa7574f6 | 2773 | sb->dev_roles[i] = MD_DISK_ROLE_SPARE; |
afa368f4 N |
2774 | if ((state & (1<<MD_DISK_SYNC)) && |
2775 | !(state & (1<<MD_DISK_FAULTY))) | |
2776 | sb->dev_roles[i] = __cpu_to_le16(sb0->disks[i].raid_disk); | |
2777 | } | |
2778 | sb->sb_csum = calc_sb_1_csum(sb); | |
2779 | return ret; | |
2780 | } | |
2781 | ||
82d9eba6 NB |
2782 | struct superswitch super1 = { |
2783 | .examine_super = examine_super1, | |
2784 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 2785 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
2786 | .detail_super = detail_super1, |
2787 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 2788 | .export_detail_super = export_detail_super1, |
111d01fc | 2789 | .write_init_super = write_init_super1, |
0e600426 N |
2790 | .validate_geometry = validate_geometry1, |
2791 | .add_to_super = add_to_super1, | |
6d388a88 | 2792 | .examine_badblocks = examine_badblocks_super1, |
74db60b0 | 2793 | .copy_metadata = copy_metadata1, |
e97a7cd0 | 2794 | .write_init_ppl = write_init_ppl1, |
83b6208e | 2795 | .match_home = match_home1, |
82d9eba6 NB |
2796 | .uuid_from_super = uuid_from_super1, |
2797 | .getinfo_super = getinfo_super1, | |
00bbdbda | 2798 | .container_content = container_content1, |
82d9eba6 | 2799 | .update_super = update_super1, |
82d9eba6 | 2800 | .init_super = init_super1, |
82d9eba6 | 2801 | .store_super = store_super1, |
82d9eba6 NB |
2802 | .compare_super = compare_super1, |
2803 | .load_super = load_super1, | |
2804 | .match_metadata_desc = match_metadata_desc1, | |
2805 | .avail_size = avail_size1, | |
34163fc7 NB |
2806 | .add_internal_bitmap = add_internal_bitmap1, |
2807 | .locate_bitmap = locate_bitmap1, | |
2808 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 2809 | .free_super = free_super1, |
f277ce36 NB |
2810 | #if __BYTE_ORDER == BIG_ENDIAN |
2811 | .swapuuid = 0, | |
2812 | #else | |
2813 | .swapuuid = 1, | |
2814 | #endif | |
31015d57 | 2815 | .name = "1.x", |
82d9eba6 | 2816 | }; |