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Commit | Line | Data |
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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 | 154 | |
7071320a | 155 | #ifndef MDASSEMBLE |
69a48116 SL |
156 | static int role_from_sb(struct mdp_superblock_1 *sb) |
157 | { | |
158 | unsigned int d; | |
159 | int role; | |
160 | ||
161 | d = __le32_to_cpu(sb->dev_number); | |
162 | if (d < __le32_to_cpu(sb->max_dev)) | |
163 | role = __le16_to_cpu(sb->dev_roles[d]); | |
164 | else | |
165 | role = MD_DISK_ROLE_SPARE; | |
166 | return role; | |
167 | } | |
7071320a | 168 | #endif |
d2cd3ffc | 169 | |
7e6e839a GJ |
170 | /* return how many bytes are needed for bitmap, for cluster-md each node |
171 | * should have it's own bitmap */ | |
172 | static unsigned int calc_bitmap_size(bitmap_super_t *bms, unsigned int boundary) | |
173 | { | |
174 | unsigned long long bits, bytes; | |
175 | ||
561ad559 AP |
176 | bits = bitmap_bits(__le64_to_cpu(bms->sync_size), |
177 | __le32_to_cpu(bms->chunksize)); | |
7e6e839a GJ |
178 | bytes = (bits+7) >> 3; |
179 | bytes += sizeof(bitmap_super_t); | |
180 | bytes = ROUND_UP(bytes, boundary); | |
181 | ||
182 | return bytes; | |
183 | } | |
184 | ||
82d9eba6 NB |
185 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
186 | { | |
187 | unsigned int disk_csum, csum; | |
188 | unsigned long long newcsum; | |
189 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
190 | unsigned int *isuper = (unsigned int*)sb; | |
82d9eba6 NB |
191 | |
192 | /* make sure I can count... */ | |
193 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
194 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
195 | sizeof(struct mdp_superblock_1) != 256) { | |
196 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
197 | } | |
198 | ||
199 | disk_csum = sb->sb_csum; | |
200 | sb->sb_csum = 0; | |
201 | newcsum = 0; | |
e4c72d1d | 202 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
203 | newcsum += __le32_to_cpu(*isuper); |
204 | isuper++; | |
205 | } | |
82d9eba6 NB |
206 | |
207 | if (size == 2) | |
208 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
209 | ||
210 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
211 | sb->sb_csum = disk_csum; | |
83205b64 | 212 | return __cpu_to_le32(csum); |
82d9eba6 NB |
213 | } |
214 | ||
308340aa JS |
215 | /* |
216 | * Information related to file descriptor used for aligned reads/writes. | |
217 | * Cache the block size. | |
218 | */ | |
219 | struct align_fd { | |
220 | int fd; | |
221 | int blk_sz; | |
222 | }; | |
223 | ||
224 | static void init_afd(struct align_fd *afd, int fd) | |
225 | { | |
226 | afd->fd = fd; | |
32971509 | 227 | if (!get_dev_sector_size(afd->fd, NULL, (unsigned int *)&afd->blk_sz)) |
308340aa JS |
228 | afd->blk_sz = 512; |
229 | } | |
230 | ||
5ea022a1 | 231 | static char abuf[4096+4096]; |
308340aa | 232 | static int aread(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
233 | { |
234 | /* aligned read. | |
235 | * On devices with a 4K sector size, we need to read | |
236 | * the full sector and copy relevant bits into | |
237 | * the buffer | |
238 | */ | |
6ef89052 | 239 | int bsize, iosize; |
5ea022a1 N |
240 | char *b; |
241 | int n; | |
6ef89052 | 242 | |
308340aa JS |
243 | bsize = afd->blk_sz; |
244 | ||
245 | if (!bsize || bsize > 4096 || len > 4096) { | |
246 | if (!bsize) | |
7a862a02 | 247 | fprintf(stderr, "WARNING - aread() called with invalid block size\n"); |
5ea022a1 | 248 | return -1; |
308340aa | 249 | } |
0a2f1894 | 250 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 251 | |
6ef89052 N |
252 | for (iosize = 0; iosize < len; iosize += bsize) |
253 | ; | |
308340aa | 254 | n = read(afd->fd, b, iosize); |
5ea022a1 N |
255 | if (n <= 0) |
256 | return n; | |
308340aa | 257 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
258 | if (n > len) |
259 | n = len; | |
260 | memcpy(buf, b, n); | |
261 | return n; | |
262 | } | |
263 | ||
308340aa | 264 | static int awrite(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
265 | { |
266 | /* aligned write. | |
267 | * On devices with a 4K sector size, we need to write | |
268 | * the full sector. We pre-read if the sector is larger | |
269 | * than the write. | |
270 | * The address must be sector-aligned. | |
271 | */ | |
6ef89052 | 272 | int bsize, iosize; |
5ea022a1 N |
273 | char *b; |
274 | int n; | |
308340aa JS |
275 | |
276 | bsize = afd->blk_sz; | |
277 | if (!bsize || bsize > 4096 || len > 4096) { | |
278 | if (!bsize) | |
7a862a02 | 279 | fprintf(stderr, "WARNING - awrite() called with invalid block size\n"); |
5ea022a1 | 280 | return -1; |
308340aa | 281 | } |
0a2f1894 | 282 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 283 | |
6ef89052 N |
284 | for (iosize = 0; iosize < len ; iosize += bsize) |
285 | ; | |
286 | ||
287 | if (len != iosize) { | |
308340aa | 288 | n = read(afd->fd, b, iosize); |
6ef89052 N |
289 | if (n <= 0) |
290 | return n; | |
308340aa | 291 | lseek(afd->fd, -n, 1); |
6ef89052 N |
292 | } |
293 | ||
5ea022a1 | 294 | memcpy(b, buf, len); |
308340aa | 295 | n = write(afd->fd, b, iosize); |
5ea022a1 N |
296 | if (n <= 0) |
297 | return n; | |
308340aa | 298 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
299 | return len; |
300 | } | |
301 | ||
e97a7cd0 AP |
302 | static inline unsigned int choose_ppl_space(int chunk) |
303 | { | |
304 | return (PPL_HEADER_SIZE >> 9) + (chunk > 128*2 ? chunk : 128*2); | |
305 | } | |
306 | ||
c7654afc | 307 | #ifndef MDASSEMBLE |
3da92f27 | 308 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 309 | { |
3da92f27 | 310 | struct mdp_superblock_1 *sb = st->sb; |
0aa2f15b | 311 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
82d9eba6 | 312 | time_t atime; |
f21e18ca | 313 | unsigned int d; |
e8e1c176 | 314 | int role; |
4180aa4d | 315 | int delta_extra = 0; |
82d9eba6 NB |
316 | int i; |
317 | char *c; | |
a1cbd7d0 | 318 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 319 | int layout; |
a17a3de3 | 320 | unsigned long long sb_offset; |
5e1863d4 | 321 | struct mdinfo info; |
82d9eba6 NB |
322 | |
323 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
324 | printf(" Version : 1"); |
325 | sb_offset = __le64_to_cpu(sb->super_offset); | |
326 | if (sb_offset <= 4) | |
327 | printf(".1\n"); | |
328 | else if (sb_offset <= 8) | |
329 | printf(".2\n"); | |
330 | else | |
331 | printf(".0\n"); | |
91eedefc | 332 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
333 | printf(" Array UUID : "); |
334 | for (i=0; i<16; i++) { | |
82d9eba6 | 335 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 336 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
337 | } |
338 | printf("\n"); | |
a1cbd7d0 NB |
339 | printf(" Name : %.32s", sb->set_name); |
340 | if (l > 0 && l < 32 && | |
341 | sb->set_name[l] == ':' && | |
342 | strncmp(sb->set_name, homehost, l) == 0) | |
343 | printf(" (local to host %s)", homehost); | |
344 | printf("\n"); | |
8b2202de | 345 | if (bms->nodes > 0 && (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) |
2cf42394 | 346 | printf(" Cluster Name : %-64s\n", bms->cluster_name); |
82d9eba6 NB |
347 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
348 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
349 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
350 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
351 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
352 | printf("\n"); | |
5cda0964 | 353 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
354 | (unsigned long long)__le64_to_cpu(sb->data_size), |
355 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 356 | if (__le32_to_cpu(sb->level) > 0) { |
d4633e06 | 357 | int ddsks = 0, ddsks_denom = 1; |
b674b5b8 NB |
358 | switch(__le32_to_cpu(sb->level)) { |
359 | case 1: ddsks=1;break; | |
360 | case 4: | |
83205b64 NB |
361 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
362 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
363 | case 10: | |
364 | layout = __le32_to_cpu(sb->layout); | |
d4633e06 N |
365 | ddsks = __le32_to_cpu(sb->raid_disks); |
366 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
b674b5b8 | 367 | } |
d4633e06 N |
368 | if (ddsks) { |
369 | long long asize = __le64_to_cpu(sb->size); | |
370 | asize = (asize << 9) * ddsks / ddsks_denom; | |
83205b64 | 371 | printf(" Array Size : %llu%s\n", |
d4633e06 N |
372 | asize >> 10, human_size(asize)); |
373 | } | |
b674b5b8 | 374 | if (sb->size != sb->data_size) |
5cda0964 | 375 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
376 | (unsigned long long)__le64_to_cpu(sb->size), |
377 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 378 | } |
82d9eba6 | 379 | if (sb->data_offset) |
199171a2 NB |
380 | printf(" Data Offset : %llu sectors\n", |
381 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
8772113a N |
382 | if (sb->new_offset && |
383 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) { | |
8fe1c44f N |
384 | unsigned long long offset = __le64_to_cpu(sb->data_offset); |
385 | offset += (signed)(int32_t)__le32_to_cpu(sb->new_offset); | |
386 | printf(" New Offset : %llu sectors\n", offset); | |
387 | } | |
199171a2 NB |
388 | printf(" Super Offset : %llu sectors\n", |
389 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc NB |
390 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
391 | printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
5e1863d4 N |
392 | |
393 | st->ss->getinfo_super(st, &info, NULL); | |
394 | if (info.space_after != 1 && | |
395 | !(__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) | |
396 | printf(" Unused Space : before=%llu sectors, after=%llu sectors\n", | |
397 | info.space_before, info.space_after); | |
398 | ||
a3fd117c | 399 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
400 | printf(" Device UUID : "); |
401 | for (i=0; i<16; i++) { | |
82d9eba6 | 402 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 403 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
404 | } |
405 | printf("\n"); | |
b674b5b8 | 406 | printf("\n"); |
91eedefc NB |
407 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
408 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 409 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
e97a7cd0 AP |
410 | } else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) { |
411 | printf(" PPL : %u sectors at offset %d sectors from superblock\n", | |
412 | __le16_to_cpu(sb->ppl.size), | |
413 | __le16_to_cpu(sb->ppl.offset)); | |
8fac0577 | 414 | } |
bf95d0f3 | 415 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 416 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
417 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
418 | if (__le32_to_cpu(sb->delta_disks)) { | |
419 | printf(" Delta Devices : %d", __le32_to_cpu(sb->delta_disks)); | |
4180aa4d N |
420 | printf(" (%d->%d)\n", |
421 | __le32_to_cpu(sb->raid_disks)-__le32_to_cpu(sb->delta_disks), | |
422 | __le32_to_cpu(sb->raid_disks)); | |
423 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
424 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
425 | } |
426 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
427 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
428 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
429 | } | |
430 | if (__le32_to_cpu(sb->new_layout) != __le32_to_cpu(sb->layout)) { | |
431 | if (__le32_to_cpu(sb->level) == 5) { | |
432 | c = map_num(r5layout, __le32_to_cpu(sb->new_layout)); | |
433 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
434 | } | |
fe77a154 N |
435 | if (__le32_to_cpu(sb->level) == 6) { |
436 | c = map_num(r6layout, __le32_to_cpu(sb->new_layout)); | |
437 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
438 | } | |
b674b5b8 | 439 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
440 | printf(" New Layout :"); |
441 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
442 | printf("\n"); | |
b674b5b8 NB |
443 | } |
444 | } | |
445 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
446 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
447 | printf("\n"); | |
448 | } | |
dfd4d8ee | 449 | if (sb->devflags) { |
62184891 | 450 | printf(" Flags :"); |
34163fc7 | 451 | if (sb->devflags & WriteMostly1) |
dfd4d8ee | 452 | printf(" write-mostly"); |
71574efb N |
453 | if (sb->devflags & FailFast1) |
454 | printf(" failfast"); | |
dfd4d8ee NB |
455 | printf("\n"); |
456 | } | |
82d9eba6 NB |
457 | |
458 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
459 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
460 | ||
bf95d0f3 N |
461 | if (sb->bblog_size && sb->bblog_offset) { |
462 | printf(" Bad Block Log : %d entries available at offset %ld sectors", | |
463 | __le16_to_cpu(sb->bblog_size)*512/8, | |
d6e4b44f | 464 | (long)(int32_t)__le32_to_cpu(sb->bblog_offset)); |
bf95d0f3 N |
465 | if (sb->feature_map & |
466 | __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
467 | printf(" - bad blocks present."); | |
468 | printf("\n"); | |
469 | } | |
470 | ||
82d9eba6 NB |
471 | if (calc_sb_1_csum(sb) == sb->sb_csum) |
472 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
473 | else | |
474 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
475 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 476 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
477 | printf("\n"); |
478 | if (__le32_to_cpu(sb->level) == 5) { | |
479 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
480 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
481 | } | |
fe77a154 N |
482 | if (__le32_to_cpu(sb->level) == 6) { |
483 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
484 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
485 | } | |
265e0f17 NB |
486 | if (__le32_to_cpu(sb->level) == 10) { |
487 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
488 | printf(" Layout :"); |
489 | print_r10_layout(lo); | |
490 | printf("\n"); | |
265e0f17 | 491 | } |
82d9eba6 NB |
492 | switch(__le32_to_cpu(sb->level)) { |
493 | case 0: | |
494 | case 4: | |
495 | case 5: | |
d2cd3ffc NB |
496 | case 6: |
497 | case 10: | |
b674b5b8 | 498 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
499 | break; |
500 | case -1: | |
b674b5b8 | 501 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
502 | break; |
503 | default: break; | |
504 | } | |
505 | printf("\n"); | |
e8e1c176 N |
506 | #if 0 |
507 | /* This turns out to just be confusing */ | |
c3684618 NB |
508 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
509 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
fa7574f6 | 510 | if (__le16_to_cpu(sb->dev_roles[i-1]) != MD_DISK_ROLE_SPARE) |
c3684618 NB |
511 | break; |
512 | for (d=0; d < i; d++) { | |
513 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
514 | if (d) printf(", "); | |
fa7574f6 SL |
515 | if (role == MD_DISK_ROLE_SPARE) printf("empty"); |
516 | else if(role == MD_DISK_ROLE_FAULTY) printf("failed"); | |
c3684618 NB |
517 | else printf("%d", role); |
518 | } | |
519 | printf(")\n"); | |
e8e1c176 N |
520 | #endif |
521 | printf(" Device Role : "); | |
69a48116 | 522 | role = role_from_sb(sb); |
fa7574f6 | 523 | if (role >= MD_DISK_ROLE_FAULTY) |
e8e1c176 | 524 | printf("spare\n"); |
ed94976d SL |
525 | else if (role == MD_DISK_ROLE_JOURNAL) |
526 | printf("Journal\n"); | |
24c7bc84 N |
527 | else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_REPLACEMENT)) |
528 | printf("Replacement device %d\n", role); | |
e8e1c176 N |
529 | else |
530 | printf("Active device %d\n", role); | |
531 | ||
82d9eba6 | 532 | printf(" Array State : "); |
4180aa4d | 533 | for (d=0; d<__le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 534 | int cnt = 0; |
f21e18ca | 535 | unsigned int i; |
82d9eba6 | 536 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 537 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 538 | if (role == d) |
82d9eba6 | 539 | cnt++; |
82d9eba6 | 540 | } |
24c7bc84 N |
541 | if (cnt == 2) |
542 | printf("R"); | |
543 | else if (cnt == 1) | |
544 | printf("A"); | |
545 | else if (cnt == 0) | |
546 | printf("."); | |
547 | else | |
548 | printf("?"); | |
82d9eba6 | 549 | } |
e8e1c176 N |
550 | #if 0 |
551 | /* This is confusing too */ | |
6fbba4c9 | 552 | faulty = 0; |
82d9eba6 NB |
553 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
554 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
fa7574f6 | 555 | if (role == MD_DISK_ROLE_FAULTY) |
6fbba4c9 | 556 | faulty++; |
82d9eba6 | 557 | } |
82d9eba6 | 558 | if (faulty) printf(" %d failed", faulty); |
e8e1c176 | 559 | #endif |
24c7bc84 | 560 | printf(" ('A' == active, '.' == missing, 'R' == replacing)"); |
82d9eba6 NB |
561 | printf("\n"); |
562 | } | |
563 | ||
061f2c6a | 564 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 565 | { |
3da92f27 | 566 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 567 | int i; |
a17a3de3 | 568 | unsigned long long sb_offset; |
2998bc01 | 569 | char *nm; |
b015e6c2 | 570 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
571 | |
572 | nm = strchr(sb->set_name, ':'); | |
573 | if (nm) | |
574 | nm++; | |
575 | else if (sb->set_name[0]) | |
576 | nm = sb->set_name; | |
577 | else | |
cf8de691 | 578 | nm = NULL; |
82d9eba6 | 579 | |
7103b9b8 N |
580 | printf("ARRAY "); |
581 | if (nm) { | |
582 | printf("/dev/md/"); | |
583 | print_escape(nm); | |
584 | putchar(' '); | |
585 | } | |
061f2c6a N |
586 | if (verbose && c) |
587 | printf(" level=%s", c); | |
a17a3de3 DL |
588 | sb_offset = __le64_to_cpu(sb->super_offset); |
589 | if (sb_offset <= 4) | |
e9a0e728 | 590 | printf(" metadata=1.1 "); |
a17a3de3 | 591 | else if (sb_offset <= 8) |
e9a0e728 | 592 | printf(" metadata=1.2 "); |
a17a3de3 | 593 | else |
e9a0e728 | 594 | printf(" metadata=1.0 "); |
061f2c6a N |
595 | if (verbose) |
596 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
597 | printf("UUID="); | |
82d9eba6 | 598 | for (i=0; i<16; i++) { |
82d9eba6 | 599 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 600 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 601 | } |
7103b9b8 N |
602 | if (sb->set_name[0]) { |
603 | printf(" name="); | |
604 | print_quoted(sb->set_name); | |
605 | } | |
82d9eba6 NB |
606 | printf("\n"); |
607 | } | |
608 | ||
0d726f17 KS |
609 | static void export_examine_super1(struct supertype *st) |
610 | { | |
611 | struct mdp_superblock_1 *sb = st->sb; | |
612 | int i; | |
613 | int len = 32; | |
80730bae | 614 | int layout; |
0d726f17 KS |
615 | |
616 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
617 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
618 | for (i=0; i<32; i++) | |
619 | if (sb->set_name[i] == '\n' || | |
620 | sb->set_name[i] == '\0') { | |
621 | len = i; | |
622 | break; | |
623 | } | |
624 | if (len) | |
625 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
80730bae MN |
626 | if (__le32_to_cpu(sb->level) > 0) { |
627 | int ddsks = 0, ddsks_denom = 1; | |
628 | switch(__le32_to_cpu(sb->level)) { | |
629 | case 1: ddsks=1;break; | |
630 | case 4: | |
631 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; | |
632 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
633 | case 10: | |
634 | layout = __le32_to_cpu(sb->layout); | |
635 | ddsks = __le32_to_cpu(sb->raid_disks); | |
636 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
637 | } | |
638 | if (ddsks) { | |
639 | long long asize = __le64_to_cpu(sb->size); | |
640 | asize = (asize << 9) * ddsks / ddsks_denom; | |
641 | printf("MD_ARRAY_SIZE=%s\n",human_size_brief(asize,JEDEC)); | |
642 | } | |
643 | } | |
0d726f17 KS |
644 | printf("MD_UUID="); |
645 | for (i=0; i<16; i++) { | |
646 | if ((i&3)==0 && i != 0) printf(":"); | |
647 | printf("%02x", sb->set_uuid[i]); | |
648 | } | |
649 | printf("\n"); | |
650 | printf("MD_UPDATE_TIME=%llu\n", | |
651 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
652 | printf("MD_DEV_UUID="); | |
653 | for (i=0; i<16; i++) { | |
654 | if ((i&3)==0 && i != 0) printf(":"); | |
655 | printf("%02x", sb->device_uuid[i]); | |
656 | } | |
657 | printf("\n"); | |
658 | printf("MD_EVENTS=%llu\n", | |
659 | (unsigned long long)__le64_to_cpu(sb->events)); | |
660 | } | |
661 | ||
74db60b0 N |
662 | static int copy_metadata1(struct supertype *st, int from, int to) |
663 | { | |
664 | /* Read superblock. If it looks good, write it out. | |
665 | * Then if a bitmap is present, copy that. | |
666 | * And if a bad-block-list is present, copy that too. | |
667 | */ | |
668 | void *buf; | |
669 | unsigned long long dsize, sb_offset; | |
670 | const int bufsize = 4*1024; | |
671 | struct mdp_superblock_1 super, *sb; | |
672 | ||
673 | if (posix_memalign(&buf, 4096, bufsize) != 0) | |
674 | return 1; | |
675 | ||
676 | if (!get_dev_size(from, NULL, &dsize)) | |
677 | goto err; | |
678 | ||
679 | dsize >>= 9; | |
680 | if (dsize < 24) | |
681 | goto err; | |
682 | switch(st->minor_version) { | |
683 | case 0: | |
684 | sb_offset = dsize; | |
685 | sb_offset -= 8*2; | |
686 | sb_offset &= ~(4*2-1); | |
687 | break; | |
688 | case 1: | |
689 | sb_offset = 0; | |
690 | break; | |
691 | case 2: | |
692 | sb_offset = 4*2; | |
693 | break; | |
694 | default: | |
695 | goto err; | |
696 | } | |
697 | ||
698 | if (lseek64(from, sb_offset << 9, 0) < 0LL) | |
699 | goto err; | |
700 | if (read(from, buf, bufsize) != bufsize) | |
701 | goto err; | |
702 | ||
703 | sb = buf; | |
704 | super = *sb; // save most of sb for when we reuse buf | |
705 | ||
706 | if (__le32_to_cpu(super.magic) != MD_SB_MAGIC || | |
707 | __le32_to_cpu(super.major_version) != 1 || | |
708 | __le64_to_cpu(super.super_offset) != sb_offset || | |
709 | calc_sb_1_csum(sb) != super.sb_csum) | |
710 | goto err; | |
711 | ||
712 | if (lseek64(to, sb_offset << 9, 0) < 0LL) | |
713 | goto err; | |
714 | if (write(to, buf, bufsize) != bufsize) | |
715 | goto err; | |
716 | ||
717 | if (super.feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
718 | unsigned long long bitmap_offset = sb_offset; | |
719 | int bytes = 4096; // just an estimate. | |
720 | int written = 0; | |
721 | struct align_fd afrom, ato; | |
722 | ||
723 | init_afd(&afrom, from); | |
724 | init_afd(&ato, to); | |
725 | ||
726 | bitmap_offset += (int32_t)__le32_to_cpu(super.bitmap_offset); | |
727 | ||
728 | if (lseek64(from, bitmap_offset<<9, 0) < 0) | |
729 | goto err; | |
730 | if (lseek64(to, bitmap_offset<<9, 0) < 0) | |
731 | goto err; | |
732 | ||
733 | for (written = 0; written < bytes ; ) { | |
734 | int n = bytes - written; | |
735 | if (n > 4096) | |
736 | n = 4096; | |
737 | if (aread(&afrom, buf, n) != n) | |
738 | goto err; | |
739 | if (written == 0) { | |
740 | /* have the header, can calculate | |
741 | * correct bitmap bytes */ | |
742 | bitmap_super_t *bms; | |
74db60b0 | 743 | bms = (void*)buf; |
4a3d29ed | 744 | bytes = calc_bitmap_size(bms, 512); |
74db60b0 N |
745 | if (n > bytes) |
746 | n = bytes; | |
747 | } | |
748 | if (awrite(&ato, buf, n) != n) | |
749 | goto err; | |
750 | written += n; | |
751 | } | |
752 | } | |
753 | ||
754 | if (super.bblog_size != 0 && | |
27c7c87a | 755 | __le16_to_cpu(super.bblog_size) <= 100 && |
74db60b0 N |
756 | super.bblog_offset != 0 && |
757 | (super.feature_map & __le32_to_cpu(MD_FEATURE_BAD_BLOCKS))) { | |
758 | /* There is a bad block log */ | |
759 | unsigned long long bb_offset = sb_offset; | |
27c7c87a | 760 | int bytes = __le16_to_cpu(super.bblog_size) * 512; |
74db60b0 N |
761 | int written = 0; |
762 | struct align_fd afrom, ato; | |
763 | ||
764 | init_afd(&afrom, from); | |
765 | init_afd(&ato, to); | |
766 | ||
767 | bb_offset += (int32_t)__le32_to_cpu(super.bblog_offset); | |
768 | ||
769 | if (lseek64(from, bb_offset<<9, 0) < 0) | |
770 | goto err; | |
771 | if (lseek64(to, bb_offset<<9, 0) < 0) | |
772 | goto err; | |
773 | ||
774 | for (written = 0; written < bytes ; ) { | |
775 | int n = bytes - written; | |
776 | if (n > 4096) | |
777 | n = 4096; | |
778 | if (aread(&afrom, buf, n) != n) | |
779 | goto err; | |
780 | ||
781 | if (awrite(&ato, buf, n) != n) | |
782 | goto err; | |
783 | written += n; | |
784 | } | |
785 | } | |
786 | ||
787 | free(buf); | |
788 | return 0; | |
789 | ||
790 | err: | |
791 | free(buf); | |
792 | return 1; | |
793 | } | |
794 | ||
3da92f27 | 795 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 796 | { |
3da92f27 | 797 | struct mdp_superblock_1 *sb = st->sb; |
0aa2f15b | 798 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
82d9eba6 | 799 | int i; |
b6750aa8 | 800 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 801 | |
65884368 | 802 | printf(" Name : %.32s", sb->set_name); |
b6750aa8 NB |
803 | if (l > 0 && l < 32 && |
804 | sb->set_name[l] == ':' && | |
805 | strncmp(sb->set_name, homehost, l) == 0) | |
806 | printf(" (local to host %s)", homehost); | |
8b2202de | 807 | if (bms->nodes > 0 && (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) |
65884368 AP |
808 | printf("\n Cluster Name : %-64s", bms->cluster_name); |
809 | printf("\n UUID : "); | |
82d9eba6 | 810 | for (i=0; i<16; i++) { |
82d9eba6 | 811 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 812 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 813 | } |
65884368 AP |
814 | printf("\n Events : %llu\n\n", |
815 | (unsigned long long)__le64_to_cpu(sb->events)); | |
82d9eba6 NB |
816 | } |
817 | ||
3da92f27 | 818 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 819 | { |
3da92f27 | 820 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
821 | int i; |
822 | ||
7103b9b8 N |
823 | if (sb->set_name[0]) { |
824 | printf(" name="); | |
825 | print_quoted(sb->set_name); | |
826 | } | |
82d9eba6 NB |
827 | printf(" UUID="); |
828 | for (i=0; i<16; i++) { | |
82d9eba6 | 829 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 830 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
831 | } |
832 | } | |
833 | ||
0d726f17 | 834 | static void export_detail_super1(struct supertype *st) |
54bad364 | 835 | { |
3da92f27 | 836 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
837 | int i; |
838 | int len = 32; | |
839 | ||
840 | for (i=0; i<32; i++) | |
841 | if (sb->set_name[i] == '\n' || | |
842 | sb->set_name[i] == '\0') { | |
843 | len = i; | |
844 | break; | |
845 | } | |
846 | if (len) | |
847 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
848 | } |
849 | ||
6d388a88 N |
850 | static int examine_badblocks_super1(struct supertype *st, int fd, char *devname) |
851 | { | |
852 | struct mdp_superblock_1 *sb = st->sb; | |
853 | unsigned long long offset; | |
854 | int size; | |
855 | __u64 *bbl, *bbp; | |
856 | int i; | |
857 | ||
27c7c87a | 858 | if (!sb->bblog_size || __le16_to_cpu(sb->bblog_size) > 100 |
6d388a88 N |
859 | || !sb->bblog_offset){ |
860 | printf("No bad-blocks list configured on %s\n", devname); | |
861 | return 0; | |
862 | } | |
863 | if ((sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
864 | == 0) { | |
865 | printf("Bad-blocks list is empty in %s\n", devname); | |
866 | return 0; | |
867 | } | |
868 | ||
27c7c87a | 869 | size = __le16_to_cpu(sb->bblog_size)* 512; |
0cf83229 | 870 | if (posix_memalign((void**)&bbl, 4096, size) != 0) { |
1ade5cc1 | 871 | pr_err("could not allocate badblocks list\n"); |
0cf83229 N |
872 | return 0; |
873 | } | |
6d388a88 N |
874 | offset = __le64_to_cpu(sb->super_offset) + |
875 | (int)__le32_to_cpu(sb->bblog_offset); | |
876 | offset <<= 9; | |
877 | if (lseek64(fd, offset, 0) < 0) { | |
878 | pr_err("Cannot seek to bad-blocks list\n"); | |
879 | return 1; | |
880 | } | |
881 | if (read(fd, bbl, size) != size) { | |
882 | pr_err("Cannot read bad-blocks list\n"); | |
883 | return 1; | |
884 | } | |
885 | /* 64bits per entry. 10 bits is block-count, 54 bits is block | |
886 | * offset. Blocks are sectors unless bblog->shift makes them bigger | |
887 | */ | |
888 | bbp = (__u64*)bbl; | |
889 | printf("Bad-blocks on %s:\n", devname); | |
890 | for (i = 0; i < size/8; i++, bbp++) { | |
891 | __u64 bb = __le64_to_cpu(*bbp); | |
892 | int count = bb & 0x3ff; | |
893 | unsigned long long sector = bb >> 10; | |
894 | ||
895 | if (bb + 1 == 0) | |
896 | break; | |
897 | ||
898 | sector <<= sb->bblog_shift; | |
899 | count <<= sb->bblog_shift; | |
900 | ||
901 | printf("%20llu for %d sectors\n", sector, count); | |
902 | } | |
903 | return 0; | |
904 | } | |
905 | ||
c7654afc NB |
906 | #endif |
907 | ||
3da92f27 | 908 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 909 | { |
3da92f27 | 910 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
911 | int l = homehost ? strlen(homehost) : 0; |
912 | ||
913 | return (l > 0 && l < 32 && | |
914 | sb->set_name[l] == ':' && | |
915 | strncmp(sb->set_name, homehost, l) == 0); | |
916 | } | |
917 | ||
3da92f27 | 918 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 919 | { |
3da92f27 | 920 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
921 | char *cuuid = (char*)uuid; |
922 | int i; | |
923 | for (i=0; i<16; i++) | |
924 | cuuid[i] = super->set_uuid[i]; | |
925 | } | |
926 | ||
a5d85af7 | 927 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 928 | { |
3da92f27 | 929 | struct mdp_superblock_1 *sb = st->sb; |
80bf9135 N |
930 | struct bitmap_super_s *bsb = (void*)(((char*)sb)+MAX_SB_SIZE); |
931 | struct misc_dev_info *misc = (void*)(((char*)sb)+MAX_SB_SIZE+BM_SUPER_SIZE); | |
82d9eba6 | 932 | int working = 0; |
f21e18ca | 933 | unsigned int i; |
a5d85af7 N |
934 | unsigned int role; |
935 | unsigned int map_disks = info->array.raid_disks; | |
80bf9135 N |
936 | unsigned long long super_offset; |
937 | unsigned long long data_size; | |
82d9eba6 | 938 | |
95eeceeb | 939 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 940 | info->array.major_version = 1; |
b8ac1967 | 941 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
942 | info->array.patch_version = 0; |
943 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
944 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 945 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
946 | info->array.md_minor = -1; |
947 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 948 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 949 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c | 950 | info->array.state = |
d5977056 | 951 | (__le64_to_cpu(sb->resync_offset) == MaxSector) |
4855f95c | 952 | ? 1 : 0; |
06bd6793 GJ |
953 | if (__le32_to_cpu(bsb->nodes) > 1) |
954 | info->array.state |= (1 << MD_SB_CLUSTERED); | |
353632d9 | 955 | |
e97a7cd0 | 956 | super_offset = __le64_to_cpu(sb->super_offset); |
353632d9 NB |
957 | info->data_offset = __le64_to_cpu(sb->data_offset); |
958 | info->component_size = __le64_to_cpu(sb->size); | |
e97a7cd0 | 959 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { |
34a13953 | 960 | info->bitmap_offset = (int32_t)__le32_to_cpu(sb->bitmap_offset); |
e97a7cd0 AP |
961 | } else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_PPL)) { |
962 | info->ppl_offset = __le16_to_cpu(sb->ppl.offset); | |
963 | info->ppl_size = __le16_to_cpu(sb->ppl.size); | |
964 | info->ppl_sector = super_offset + info->ppl_offset; | |
965 | } | |
82d9eba6 NB |
966 | |
967 | info->disk.major = 0; | |
968 | info->disk.minor = 0; | |
fbf8a0b7 | 969 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 | 970 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
911cead7 | 971 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) |
fa7574f6 | 972 | role = MD_DISK_ROLE_FAULTY; |
82d9eba6 NB |
973 | else |
974 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
975 | ||
0ddc35be N |
976 | if (info->array.level <= 0) |
977 | data_size = __le64_to_cpu(sb->data_size); | |
978 | else | |
979 | data_size = __le64_to_cpu(sb->size); | |
80bf9135 N |
980 | if (info->data_offset < super_offset) { |
981 | unsigned long long end; | |
982 | info->space_before = info->data_offset; | |
983 | end = super_offset; | |
cc3130a7 N |
984 | |
985 | if (sb->bblog_offset && sb->bblog_size) { | |
986 | unsigned long long bboffset = super_offset; | |
987 | bboffset += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
988 | if (bboffset < end) | |
989 | end = bboffset; | |
990 | } | |
991 | ||
e97a7cd0 AP |
992 | if (super_offset + info->bitmap_offset + info->ppl_offset < end) |
993 | end = super_offset + info->bitmap_offset + info->ppl_offset; | |
cc3130a7 | 994 | |
80bf9135 N |
995 | if (info->data_offset + data_size < end) |
996 | info->space_after = end - data_size - info->data_offset; | |
997 | else | |
998 | info->space_after = 0; | |
999 | } else { | |
cc3130a7 N |
1000 | unsigned long long earliest; |
1001 | earliest = super_offset + (32+4)*2; /* match kernel */ | |
80bf9135 N |
1002 | if (info->bitmap_offset > 0) { |
1003 | unsigned long long bmend = info->bitmap_offset; | |
561ad559 | 1004 | unsigned long long size = calc_bitmap_size(bsb, 4096); |
80bf9135 | 1005 | size /= 512; |
cc3130a7 N |
1006 | bmend += size; |
1007 | if (bmend > earliest) | |
ac92b44a | 1008 | earliest = bmend; |
e97a7cd0 AP |
1009 | } else if (info->ppl_offset > 0) { |
1010 | unsigned long long pplend = info->ppl_offset + | |
1011 | info->ppl_size; | |
1012 | if (pplend > earliest) | |
1013 | earliest = pplend; | |
cc3130a7 N |
1014 | } |
1015 | if (sb->bblog_offset && sb->bblog_size) { | |
1016 | unsigned long long bbend = super_offset; | |
1017 | bbend += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
27c7c87a | 1018 | bbend += __le16_to_cpu(sb->bblog_size); |
cc3130a7 N |
1019 | if (bbend > earliest) |
1020 | earliest = bbend; | |
1021 | } | |
1022 | if (earliest < info->data_offset) | |
1023 | info->space_before = info->data_offset - earliest; | |
1024 | else | |
1025 | info->space_before = 0; | |
80bf9135 N |
1026 | info->space_after = misc->device_size - data_size - info->data_offset; |
1027 | } | |
c4b26c64 N |
1028 | if (info->space_before == 0 && info->space_after == 0) { |
1029 | /* It will look like we don't support data_offset changes, | |
1030 | * be we do - it's just that there is no room. | |
1031 | * A change that reduced the number of devices should | |
1032 | * still be allowed, so set the otherwise useless value of '1' | |
1033 | */ | |
1034 | info->space_after = 1; | |
1035 | } | |
80bf9135 | 1036 | |
82d9eba6 NB |
1037 | info->disk.raid_disk = -1; |
1038 | switch(role) { | |
fa7574f6 | 1039 | case MD_DISK_ROLE_SPARE: |
f22385f9 | 1040 | info->disk.state = 0; /* spare: not active, not sync, not faulty */ |
82d9eba6 | 1041 | break; |
fa7574f6 | 1042 | case MD_DISK_ROLE_FAULTY: |
aa313118 | 1043 | info->disk.state = (1 << MD_DISK_FAULTY); /* faulty */ |
82d9eba6 | 1044 | break; |
ed94976d SL |
1045 | case MD_DISK_ROLE_JOURNAL: |
1046 | info->disk.state = (1 << MD_DISK_JOURNAL); | |
1047 | info->disk.raid_disk = role; | |
1048 | info->space_after = (misc->device_size - info->data_offset) % 8; /* journal uses all 4kB blocks*/ | |
1049 | break; | |
82d9eba6 NB |
1050 | default: |
1051 | info->disk.state = 6; /* active and in sync */ | |
1052 | info->disk.raid_disk = role; | |
1053 | } | |
cb099724 N |
1054 | if (sb->devflags & WriteMostly1) |
1055 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
71574efb N |
1056 | if (sb->devflags & FailFast1) |
1057 | info->disk.state |= (1 << MD_DISK_FAILFAST); | |
82d9eba6 | 1058 | info->events = __le64_to_cpu(sb->events); |
1522c538 | 1059 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 1060 | info->safe_mode_delay = 200; |
82d9eba6 NB |
1061 | |
1062 | memcpy(info->uuid, sb->set_uuid, 16); | |
1063 | ||
31317663 NB |
1064 | strncpy(info->name, sb->set_name, 32); |
1065 | info->name[32] = 0; | |
947fd4dd | 1066 | |
aacb2f81 | 1067 | if ((__le32_to_cpu(sb->feature_map)&MD_FEATURE_REPLACEMENT)) { |
72e7fb13 | 1068 | info->disk.state &= ~(1 << MD_DISK_SYNC); |
aacb2f81 N |
1069 | info->disk.state |= 1 << MD_DISK_REPLACEMENT; |
1070 | } | |
1071 | ||
921d9e16 N |
1072 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
1073 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
1074 | else | |
1075 | info->recovery_start = MaxSector; | |
1076 | ||
353632d9 NB |
1077 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
1078 | info->reshape_active = 1; | |
26bf5587 N |
1079 | if ((sb->feature_map & __le32_to_cpu(MD_FEATURE_NEW_OFFSET)) && |
1080 | sb->new_offset != 0) | |
5e88ab2e | 1081 | info->reshape_active |= RESHAPE_NO_BACKUP; |
353632d9 NB |
1082 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); |
1083 | info->new_level = __le32_to_cpu(sb->new_level); | |
1084 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
1085 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 1086 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
1087 | if (info->delta_disks < 0) |
1088 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
1089 | } else |
1090 | info->reshape_active = 0; | |
1091 | ||
6e75048b AK |
1092 | info->recovery_blocked = info->reshape_active; |
1093 | ||
a5d85af7 N |
1094 | if (map) |
1095 | for (i=0; i<map_disks; i++) | |
1096 | map[i] = 0; | |
f21e18ca | 1097 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 1098 | role = __le16_to_cpu(sb->dev_roles[i]); |
fa7574f6 | 1099 | if (/*role == MD_DISK_ROLE_SPARE || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 1100 | working++; |
a5d85af7 N |
1101 | if (map && role < map_disks) |
1102 | map[role] = 1; | |
1103 | } | |
82d9eba6 NB |
1104 | } |
1105 | ||
1106 | info->array.working_disks = working; | |
e97a7cd0 AP |
1107 | |
1108 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_JOURNAL)) { | |
051f3265 | 1109 | info->journal_device_required = 1; |
e97a7cd0 AP |
1110 | info->consistency_policy = CONSISTENCY_POLICY_JOURNAL; |
1111 | } else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_PPL)) { | |
1112 | info->consistency_policy = CONSISTENCY_POLICY_PPL; | |
1113 | } else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
1114 | info->consistency_policy = CONSISTENCY_POLICY_BITMAP; | |
1115 | } else if (info->array.level <= 0) { | |
1116 | info->consistency_policy = CONSISTENCY_POLICY_NONE; | |
1117 | } else { | |
1118 | info->consistency_policy = CONSISTENCY_POLICY_RESYNC; | |
1119 | } | |
1120 | ||
051f3265 | 1121 | info->journal_clean = 0; |
82d9eba6 NB |
1122 | } |
1123 | ||
00bbdbda N |
1124 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
1125 | { | |
1126 | struct mdinfo *info; | |
1127 | ||
1128 | if (subarray) | |
1129 | return NULL; | |
1130 | ||
503975b9 | 1131 | info = xmalloc(sizeof(*info)); |
00bbdbda N |
1132 | getinfo_super1(st, info, NULL); |
1133 | return info; | |
1134 | } | |
1135 | ||
68c7d6d7 | 1136 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 1137 | char *update, |
e5eac01f NB |
1138 | char *devname, int verbose, |
1139 | int uuid_set, char *homehost) | |
82d9eba6 | 1140 | { |
5a31170d N |
1141 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
1142 | * if any change was made. For others, the return value is | |
1143 | * ignored. | |
c4d831e1 | 1144 | */ |
82d9eba6 | 1145 | int rv = 0; |
d15a1f72 | 1146 | int lockid; |
3da92f27 | 1147 | struct mdp_superblock_1 *sb = st->sb; |
81a8a694 | 1148 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
82d9eba6 | 1149 | |
81a8a694 GJ |
1150 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) { |
1151 | rv = cluster_get_dlmlock(&lockid); | |
d15a1f72 GJ |
1152 | if (rv) { |
1153 | pr_err("Cannot get dlmlock in %s return %d\n", __func__, rv); | |
81a8a694 | 1154 | cluster_release_dlmlock(lockid); |
d15a1f72 GJ |
1155 | return rv; |
1156 | } | |
1157 | } | |
1158 | ||
def11332 N |
1159 | if (strcmp(update, "homehost") == 0 && |
1160 | homehost) { | |
1161 | /* Note that 'homehost' is special as it is really | |
1162 | * a "name" update. | |
1163 | */ | |
1164 | char *c; | |
1165 | update = "name"; | |
1166 | c = strchr(sb->set_name, ':'); | |
1167 | if (c) | |
1168 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
1169 | else | |
1170 | strncpy(info->name, sb->set_name, 32); | |
1171 | info->name[32] = 0; | |
1172 | } | |
1173 | ||
67a8c82d NB |
1174 | if (strcmp(update, "force-one")==0) { |
1175 | /* Not enough devices for a working array, | |
1176 | * so bring this one up-to-date | |
1177 | */ | |
c4d831e1 NB |
1178 | if (sb->events != __cpu_to_le64(info->events)) |
1179 | rv = 1; | |
6d3d5804 | 1180 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 1181 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
1182 | /* Degraded array and 'force' requests to |
1183 | * maybe need to mark it 'clean'. | |
1184 | */ | |
82d9eba6 NB |
1185 | switch(__le32_to_cpu(sb->level)) { |
1186 | case 5: case 4: case 6: | |
1187 | /* need to force clean */ | |
b7528a20 | 1188 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 1189 | rv = 1; |
b7528a20 | 1190 | sb->resync_offset = MaxSector; |
82d9eba6 | 1191 | } |
1e2b2765 | 1192 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
1193 | int d = info->disk.number; |
1194 | int want; | |
aacb2f81 | 1195 | if (info->disk.state & (1<<MD_DISK_ACTIVE)) |
a2ce5a1a | 1196 | want = info->disk.raid_disk; |
69a48116 SL |
1197 | else if (info->disk.state & (1<<MD_DISK_JOURNAL)) |
1198 | want = MD_DISK_ROLE_JOURNAL; | |
82d9eba6 | 1199 | else |
fa7574f6 | 1200 | want = MD_DISK_ROLE_SPARE; |
a2ce5a1a N |
1201 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
1202 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
1203 | rv = 1; |
1204 | } | |
d43494fc N |
1205 | if (info->reshape_active && |
1206 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
1207 | info->delta_disks >= 0 && | |
1208 | info->reshape_progress < __le64_to_cpu(sb->reshape_position)) { | |
1209 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
1210 | rv = 1; | |
1211 | } | |
1212 | if (info->reshape_active && | |
1213 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
1214 | info->delta_disks < 0 && | |
1215 | info->reshape_progress > __le64_to_cpu(sb->reshape_position)) { | |
1216 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
1217 | rv = 1; | |
1218 | } | |
1e2b2765 | 1219 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 1220 | unsigned int i; |
c5f71c24 | 1221 | int fd; |
f21e18ca | 1222 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f NB |
1223 | |
1224 | for (i=0 ; i < max ; i++) | |
fa7574f6 | 1225 | if (__le16_to_cpu(sb->dev_roles[i]) >= MD_DISK_ROLE_FAULTY) |
f752781f NB |
1226 | break; |
1227 | sb->dev_number = __cpu_to_le32(i); | |
1228 | info->disk.number = i; | |
1229 | if (max >= __le32_to_cpu(sb->max_dev)) | |
1230 | sb->max_dev = __cpu_to_le32(max+1); | |
1231 | ||
c5f71c24 | 1232 | random_uuid(sb->device_uuid); |
f752781f NB |
1233 | |
1234 | sb->dev_roles[i] = | |
1235 | __cpu_to_le16(info->disk.raid_disk); | |
1c6cb603 N |
1236 | |
1237 | fd = open(devname, O_RDONLY); | |
1238 | if (fd >= 0) { | |
1239 | unsigned long long ds; | |
1240 | get_dev_size(fd, devname, &ds); | |
1241 | close(fd); | |
1242 | ds >>= 9; | |
1243 | if (__le64_to_cpu(sb->super_offset) < | |
1244 | __le64_to_cpu(sb->data_offset)) { | |
1245 | sb->data_size = __cpu_to_le64( | |
1246 | ds - __le64_to_cpu(sb->data_offset)); | |
1247 | } else { | |
1248 | ds -= 8*2; | |
1249 | ds &= ~(unsigned long long)(4*2-1); | |
1250 | sb->super_offset = __cpu_to_le64(ds); | |
1251 | sb->data_size = __cpu_to_le64( | |
1252 | ds - __le64_to_cpu(sb->data_offset)); | |
1253 | } | |
1254 | } | |
1e2b2765 | 1255 | } else if (strcmp(update, "linear-grow-update") == 0) { |
82d9eba6 | 1256 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
1257 | sb->dev_roles[info->disk.number] = |
1258 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 1259 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 1260 | /* make sure resync happens */ |
434b7755 | 1261 | sb->resync_offset = 0ULL; |
1e2b2765 | 1262 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 1263 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 1264 | |
561ad559 AP |
1265 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET) |
1266 | memcpy(bms->uuid, sb->set_uuid, 16); | |
5a31170d N |
1267 | } else if (strcmp(update, "no-bitmap") == 0) { |
1268 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
688e99a7 N |
1269 | } else if (strcmp(update, "bbl") == 0) { |
1270 | /* only possible if there is room after the bitmap, or if | |
1271 | * there is no bitmap | |
1272 | */ | |
1273 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1274 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
561ad559 | 1275 | long bitmap_offset = 0; |
688e99a7 N |
1276 | long bm_sectors = 0; |
1277 | long space; | |
1278 | ||
5a23a06e | 1279 | #ifndef MDASSEMBLE |
688e99a7 | 1280 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
561ad559 AP |
1281 | bitmap_offset = (long)__le32_to_cpu(sb->bitmap_offset); |
1282 | bm_sectors = calc_bitmap_size(bms, 4096) >> 9; | |
e97a7cd0 AP |
1283 | } else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) { |
1284 | bitmap_offset = (long)__le16_to_cpu(sb->ppl.offset); | |
1285 | bm_sectors = (long)__le16_to_cpu(sb->ppl.size); | |
688e99a7 | 1286 | } |
5a23a06e | 1287 | #endif |
688e99a7 | 1288 | if (sb_offset < data_offset) { |
f79bbf4f | 1289 | /* 1.1 or 1.2. Put bbl after bitmap leaving at least 32K |
688e99a7 N |
1290 | */ |
1291 | long bb_offset; | |
f79bbf4f | 1292 | bb_offset = sb_offset + 8; |
688e99a7 | 1293 | if (bm_sectors && bitmap_offset > 0) |
f79bbf4f N |
1294 | bb_offset = bitmap_offset + bm_sectors; |
1295 | while (bb_offset < (long)sb_offset + 8 + 32*2 | |
1296 | && bb_offset + 8+8 <= (long)data_offset) | |
1297 | /* too close to bitmap, and room to grow */ | |
1298 | bb_offset += 8; | |
1299 | if (bb_offset + 8 <= (long)data_offset) { | |
688e99a7 N |
1300 | sb->bblog_size = __cpu_to_le16(8); |
1301 | sb->bblog_offset = __cpu_to_le32(bb_offset); | |
1302 | } | |
1303 | } else { | |
1304 | /* 1.0 - Put bbl just before super block */ | |
1305 | if (bm_sectors && bitmap_offset < 0) | |
1306 | space = -bitmap_offset - bm_sectors; | |
1307 | else | |
1308 | space = sb_offset - data_offset - | |
1309 | __le64_to_cpu(sb->data_size); | |
1310 | if (space >= 8) { | |
1311 | sb->bblog_size = __cpu_to_le16(8); | |
1312 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1313 | } | |
1314 | } | |
1315 | } else if (strcmp(update, "no-bbl") == 0) { | |
1316 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
1317 | pr_err("Cannot remove active bbl from %s\n",devname); | |
1318 | else { | |
1319 | sb->bblog_size = 0; | |
1320 | sb->bblog_shift = 0; | |
1321 | sb->bblog_offset = 0; | |
1322 | } | |
6dd16dac N |
1323 | } else if (strcmp(update, "force-no-bbl") == 0) { |
1324 | sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS); | |
1325 | sb->bblog_size = 0; | |
1326 | sb->bblog_shift = 0; | |
1327 | sb->bblog_offset = 0; | |
e6e9dd3f AP |
1328 | } else if (strcmp(update, "ppl") == 0) { |
1329 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1330 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
1331 | unsigned long long data_size = __le64_to_cpu(sb->data_size); | |
1332 | long bb_offset = __le32_to_cpu(sb->bblog_offset); | |
1333 | int space; | |
1334 | int optimal_space; | |
1335 | int offset; | |
1336 | ||
1337 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1338 | pr_err("Cannot add PPL to array with bitmap\n"); | |
1339 | return -2; | |
1340 | } | |
1341 | ||
1342 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_JOURNAL)) { | |
1343 | pr_err("Cannot add PPL to array with journal\n"); | |
1344 | return -2; | |
1345 | } | |
1346 | ||
1347 | if (sb_offset < data_offset) { | |
1348 | if (bb_offset) | |
1349 | space = bb_offset - 8; | |
1350 | else | |
1351 | space = data_offset - sb_offset - 8; | |
1352 | offset = 8; | |
1353 | } else { | |
1354 | offset = -(sb_offset - data_offset - data_size); | |
1355 | if (offset < INT16_MIN) | |
1356 | offset = INT16_MIN; | |
1357 | space = -(offset - bb_offset); | |
1358 | } | |
1359 | ||
1360 | if (space < (PPL_HEADER_SIZE >> 9) + 8) { | |
1361 | pr_err("Not enough space to add ppl\n"); | |
1362 | return -2; | |
1363 | } | |
1364 | ||
1365 | optimal_space = choose_ppl_space(__le32_to_cpu(sb->chunksize)); | |
1366 | ||
1367 | if (space > optimal_space) | |
1368 | space = optimal_space; | |
1369 | if (space > UINT16_MAX) | |
1370 | space = UINT16_MAX; | |
1371 | ||
1372 | sb->ppl.offset = __cpu_to_le16(offset); | |
1373 | sb->ppl.size = __cpu_to_le16(space); | |
1374 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL); | |
1375 | } else if (strcmp(update, "no-ppl") == 0) { | |
1376 | sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_PPL); | |
1e2b2765 | 1377 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
1378 | if (info->name[0] == 0) |
1379 | sprintf(info->name, "%d", info->array.md_minor); | |
1380 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
1381 | if (homehost && | |
1382 | strchr(info->name, ':') == NULL && | |
1383 | strlen(homehost)+1+strlen(info->name) < 32) { | |
1384 | strcpy(sb->set_name, homehost); | |
1385 | strcat(sb->set_name, ":"); | |
1386 | strcat(sb->set_name, info->name); | |
1387 | } else | |
47426701 | 1388 | strncpy(sb->set_name, info->name, sizeof(sb->set_name)); |
1e2b2765 | 1389 | } else if (strcmp(update, "devicesize") == 0 && |
bee8ec56 NB |
1390 | __le64_to_cpu(sb->super_offset) < |
1391 | __le64_to_cpu(sb->data_offset)) { | |
1392 | /* set data_size to device size less data_offset */ | |
1393 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
911cead7 | 1394 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); |
bee8ec56 NB |
1395 | sb->data_size = __cpu_to_le64( |
1396 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
d5ff855d | 1397 | } else if (strncmp(update, "revert-reshape", 14) == 0) { |
199f1a1f N |
1398 | rv = -2; |
1399 | if (!(sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE))) | |
1400 | pr_err("No active reshape to revert on %s\n", | |
1401 | devname); | |
1402 | else { | |
199f1a1f | 1403 | __u32 temp; |
a2836f12 N |
1404 | unsigned long long reshape_sectors; |
1405 | long reshape_chunk; | |
1406 | rv = 0; | |
d5ff855d N |
1407 | /* If the reshape hasn't started, just stop it. |
1408 | * It is conceivable that a stripe was modified but | |
1409 | * the metadata not updated. In that case the backup | |
1410 | * should have been used to get passed the critical stage. | |
1411 | * If that couldn't happen, the "-nobackup" version | |
1412 | * will be used. | |
1413 | */ | |
1414 | if (strcmp(update, "revert-reshape-nobackup") == 0 && | |
1415 | sb->reshape_position == 0 && | |
1416 | (__le32_to_cpu(sb->delta_disks) > 0 || | |
1417 | (__le32_to_cpu(sb->delta_disks) == 0 && | |
1418 | !(sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS))))) { | |
1419 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE); | |
1420 | sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
1421 | __le32_to_cpu(sb->delta_disks)); | |
1422 | sb->delta_disks = 0; | |
1423 | goto done; | |
1424 | } | |
a2836f12 N |
1425 | /* reshape_position is a little messy. |
1426 | * Its value must be a multiple of the larger | |
1427 | * chunk size, and of the "after" data disks. | |
1428 | * So when reverting we need to change it to | |
1429 | * be a multiple of the new "after" data disks, | |
1430 | * which is the old "before". | |
1431 | * If it isn't already a multiple of 'before', | |
1432 | * the only thing we could do would be | |
1433 | * copy some block around on the disks, which | |
1434 | * is easy to get wrong. | |
1435 | * So we reject a revert-reshape unless the | |
1436 | * alignment is good. | |
1437 | */ | |
efb3994e N |
1438 | if (__le32_to_cpu(sb->level) >= 4 && |
1439 | __le32_to_cpu(sb->level) <= 6) { | |
1440 | reshape_sectors = __le64_to_cpu(sb->reshape_position); | |
1441 | reshape_chunk = __le32_to_cpu(sb->new_chunk); | |
1442 | reshape_chunk *= __le32_to_cpu(sb->raid_disks) - __le32_to_cpu(sb->delta_disks) - | |
1443 | (__le32_to_cpu(sb->level)==6 ? 2 : 1); | |
1444 | if (reshape_sectors % reshape_chunk) { | |
1445 | pr_err("Reshape position is not suitably aligned.\n"); | |
2bf62891 | 1446 | pr_err("Try normal assembly and stop again\n"); |
efb3994e N |
1447 | return -2; |
1448 | } | |
a2836f12 N |
1449 | } |
1450 | sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
199f1a1f N |
1451 | __le32_to_cpu(sb->delta_disks)); |
1452 | if (sb->delta_disks == 0) | |
1453 | sb->feature_map ^= __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS); | |
1454 | else | |
1455 | sb->delta_disks = __cpu_to_le32(-__le32_to_cpu(sb->delta_disks)); | |
1456 | ||
1457 | temp = sb->new_layout; | |
1458 | sb->new_layout = sb->layout; | |
1459 | sb->layout = temp; | |
1460 | ||
1461 | temp = sb->new_chunk; | |
1462 | sb->new_chunk = sb->chunksize; | |
1463 | sb->chunksize = temp; | |
1464 | ||
1465 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_NEW_OFFSET)) { | |
419e0182 N |
1466 | long offset_delta = (int32_t)__le32_to_cpu(sb->new_offset); |
1467 | sb->data_offset = __cpu_to_le64(__le64_to_cpu(sb->data_offset) + offset_delta); | |
1468 | sb->new_offset = __cpu_to_le32(-offset_delta); | |
1469 | sb->data_size = __cpu_to_le64(__le64_to_cpu(sb->data_size) - offset_delta); | |
199f1a1f | 1470 | } |
d5ff855d | 1471 | done:; |
199f1a1f | 1472 | } |
1e2b2765 | 1473 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 1474 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
16715c01 DL |
1475 | else if (strcmp(update, "writemostly")==0) |
1476 | sb->devflags |= WriteMostly1; | |
1477 | else if (strcmp(update, "readwrite")==0) | |
1478 | sb->devflags &= ~WriteMostly1; | |
71574efb N |
1479 | else if (strcmp(update, "failfast") == 0) |
1480 | sb->devflags |= FailFast1; | |
1481 | else if (strcmp(update, "nofailfast") == 0) | |
1482 | sb->devflags &= ~FailFast1; | |
1e2b2765 N |
1483 | else |
1484 | rv = -1; | |
82d9eba6 NB |
1485 | |
1486 | sb->sb_csum = calc_sb_1_csum(sb); | |
81a8a694 GJ |
1487 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) |
1488 | cluster_release_dlmlock(lockid); | |
d15a1f72 | 1489 | |
82d9eba6 NB |
1490 | return rv; |
1491 | } | |
1492 | ||
3da92f27 | 1493 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
5308f117 | 1494 | struct shape *s, char *name, char *homehost, |
83cd1e97 | 1495 | int *uuid, unsigned long long data_offset) |
82d9eba6 | 1496 | { |
6416d527 | 1497 | struct mdp_superblock_1 *sb; |
82d9eba6 | 1498 | int spares; |
05697ec1 | 1499 | char defname[10]; |
911cead7 | 1500 | int sbsize; |
6416d527 | 1501 | |
3c0bcd46 | 1502 | if (posix_memalign((void**)&sb, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 1503 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
1504 | return 0; |
1505 | } | |
1afa9308 | 1506 | memset(sb, 0, SUPER1_SIZE); |
82d9eba6 | 1507 | |
64557c33 | 1508 | st->sb = sb; |
ba7eb04f | 1509 | if (info == NULL) { |
82d9eba6 NB |
1510 | /* zeroing superblock */ |
1511 | return 0; | |
05697ec1 | 1512 | } |
82d9eba6 NB |
1513 | |
1514 | spares = info->working_disks - info->active_disks; | |
911cead7 | 1515 | if (info->raid_disks + spares > MAX_DEVS) { |
e7b84f9d | 1516 | pr_err("too many devices requested: %d+%d > %d\n", |
911cead7 | 1517 | info->raid_disks , spares, MAX_DEVS); |
82d9eba6 NB |
1518 | return 0; |
1519 | } | |
1520 | ||
82d9eba6 NB |
1521 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
1522 | sb->major_version = __cpu_to_le32(1); | |
1523 | sb->feature_map = 0; | |
1524 | sb->pad0 = 0; | |
34163fc7 | 1525 | |
350f29f9 NB |
1526 | if (uuid) |
1527 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
c5f71c24 JS |
1528 | else |
1529 | random_uuid(sb->set_uuid);; | |
82d9eba6 | 1530 | |
05697ec1 NB |
1531 | if (name == NULL || *name == 0) { |
1532 | sprintf(defname, "%d", info->md_minor); | |
1533 | name = defname; | |
1534 | } | |
05697ec1 NB |
1535 | if (homehost && |
1536 | strchr(name, ':')== NULL && | |
1537 | strlen(homehost)+1+strlen(name) < 32) { | |
1538 | strcpy(sb->set_name, homehost); | |
1539 | strcat(sb->set_name, ":"); | |
1540 | strcat(sb->set_name, name); | |
1541 | } else | |
47426701 | 1542 | strncpy(sb->set_name, name, sizeof(sb->set_name)); |
82d9eba6 NB |
1543 | |
1544 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
1545 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 1546 | sb->layout = __cpu_to_le32(info->layout); |
5308f117 | 1547 | sb->size = __cpu_to_le64(s->size*2ULL); |
82d9eba6 NB |
1548 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
1549 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
1550 | ||
83cd1e97 | 1551 | sb->data_offset = __cpu_to_le64(data_offset); |
82d9eba6 NB |
1552 | sb->data_size = __cpu_to_le64(0); |
1553 | sb->super_offset = __cpu_to_le64(0); | |
1554 | sb->recovery_offset = __cpu_to_le64(0); | |
1555 | ||
1556 | sb->utime = sb->ctime; | |
1557 | sb->events = __cpu_to_le64(1); | |
34321279 | 1558 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 1559 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
1560 | else |
1561 | sb->resync_offset = 0; | |
911cead7 N |
1562 | sbsize = sizeof(struct mdp_superblock_1) + 2 * (info->raid_disks + spares); |
1563 | sbsize = ROUND_UP(sbsize, 512); | |
1564 | sb->max_dev = __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
82d9eba6 | 1565 | |
911cead7 | 1566 | memset(sb->dev_roles, 0xff, MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); |
82d9eba6 | 1567 | |
e97a7cd0 AP |
1568 | if (s->consistency_policy == CONSISTENCY_POLICY_PPL) |
1569 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL); | |
1570 | ||
82d9eba6 NB |
1571 | return 1; |
1572 | } | |
1573 | ||
111d01fc NB |
1574 | struct devinfo { |
1575 | int fd; | |
1576 | char *devname; | |
72ca9bcf | 1577 | long long data_offset; |
111d01fc NB |
1578 | mdu_disk_info_t disk; |
1579 | struct devinfo *next; | |
1580 | }; | |
0e600426 | 1581 | #ifndef MDASSEMBLE |
82d9eba6 | 1582 | /* Add a device to the superblock being created */ |
f20c3968 | 1583 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
72ca9bcf | 1584 | int fd, char *devname, unsigned long long data_offset) |
82d9eba6 | 1585 | { |
3da92f27 | 1586 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 1587 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc | 1588 | struct devinfo *di, **dip; |
81a8a694 | 1589 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
d15a1f72 | 1590 | int rv, lockid; |
e23c2663 | 1591 | int dk_state; |
d15a1f72 | 1592 | |
81a8a694 GJ |
1593 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) { |
1594 | rv = cluster_get_dlmlock(&lockid); | |
d15a1f72 GJ |
1595 | if (rv) { |
1596 | pr_err("Cannot get dlmlock in %s return %d\n", __func__, rv); | |
81a8a694 | 1597 | cluster_release_dlmlock(lockid); |
d15a1f72 GJ |
1598 | return rv; |
1599 | } | |
1600 | } | |
111d01fc | 1601 | |
e23c2663 | 1602 | dk_state = dk->state & ~(1<<MD_DISK_FAILFAST); |
aa313118 GK |
1603 | if ((dk_state & (1<<MD_DISK_ACTIVE)) && |
1604 | (dk_state & (1<<MD_DISK_SYNC)))/* active, sync */ | |
82d9eba6 | 1605 | *rp = __cpu_to_le16(dk->raid_disk); |
e23c2663 | 1606 | else if (dk_state & (1<<MD_DISK_JOURNAL)) |
cc1799c3 | 1607 | *rp = MD_DISK_ROLE_JOURNAL; |
aa313118 | 1608 | else if ((dk_state & ~(1<<MD_DISK_ACTIVE)) == 0) /* active or idle -> spare */ |
fa7574f6 | 1609 | *rp = MD_DISK_ROLE_SPARE; |
34163fc7 | 1610 | else |
fa7574f6 | 1611 | *rp = MD_DISK_ROLE_FAULTY; |
111d01fc | 1612 | |
f21e18ca | 1613 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
911cead7 | 1614 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) |
9df04a4f | 1615 | sb->max_dev = __cpu_to_le32(dk->number+1); |
8844e291 | 1616 | |
d2ca6449 | 1617 | sb->dev_number = __cpu_to_le32(dk->number); |
16715c01 | 1618 | sb->devflags = 0; /* don't copy another disks flags */ |
d2ca6449 NB |
1619 | sb->sb_csum = calc_sb_1_csum(sb); |
1620 | ||
111d01fc NB |
1621 | dip = (struct devinfo **)&st->info; |
1622 | while (*dip) | |
1623 | dip = &(*dip)->next; | |
503975b9 | 1624 | di = xmalloc(sizeof(struct devinfo)); |
111d01fc NB |
1625 | di->fd = fd; |
1626 | di->devname = devname; | |
1627 | di->disk = *dk; | |
72ca9bcf | 1628 | di->data_offset = data_offset; |
111d01fc NB |
1629 | di->next = NULL; |
1630 | *dip = di; | |
f20c3968 | 1631 | |
81a8a694 GJ |
1632 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) |
1633 | cluster_release_dlmlock(lockid); | |
d15a1f72 | 1634 | |
f20c3968 | 1635 | return 0; |
82d9eba6 | 1636 | } |
0e600426 | 1637 | #endif |
82d9eba6 | 1638 | |
b138214f | 1639 | static int locate_bitmap1(struct supertype *st, int fd, int node_num); |
14263cf1 | 1640 | |
3da92f27 | 1641 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 1642 | { |
3da92f27 | 1643 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 1644 | unsigned long long sb_offset; |
308340aa | 1645 | struct align_fd afd; |
82d9eba6 | 1646 | int sbsize; |
5dd497ee | 1647 | unsigned long long dsize; |
81a8a694 | 1648 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
d15a1f72 GJ |
1649 | int rv, lockid; |
1650 | ||
81a8a694 GJ |
1651 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) { |
1652 | rv = cluster_get_dlmlock(&lockid); | |
d15a1f72 GJ |
1653 | if (rv) { |
1654 | pr_err("Cannot get dlmlock in %s return %d\n", __func__, rv); | |
81a8a694 | 1655 | cluster_release_dlmlock(lockid); |
d15a1f72 GJ |
1656 | return rv; |
1657 | } | |
1658 | } | |
96395475 | 1659 | |
beae1dfe NB |
1660 | if (!get_dev_size(fd, NULL, &dsize)) |
1661 | return 1; | |
1662 | ||
1663 | dsize >>= 9; | |
96395475 | 1664 | |
5dd497ee | 1665 | if (dsize < 24) |
96395475 NB |
1666 | return 2; |
1667 | ||
308340aa JS |
1668 | init_afd(&afd, fd); |
1669 | ||
96395475 NB |
1670 | /* |
1671 | * Calculate the position of the superblock. | |
1672 | * It is always aligned to a 4K boundary and | |
1673 | * depending on minor_version, it can be: | |
1674 | * 0: At least 8K, but less than 12K, from end of device | |
1675 | * 1: At start of device | |
1676 | * 2: 4K from start of device. | |
1677 | */ | |
1678 | switch(st->minor_version) { | |
1679 | case 0: | |
5dd497ee | 1680 | sb_offset = dsize; |
96395475 NB |
1681 | sb_offset -= 8*2; |
1682 | sb_offset &= ~(4*2-1); | |
1683 | break; | |
1684 | case 1: | |
6fbba4c9 | 1685 | sb_offset = 0; |
96395475 NB |
1686 | break; |
1687 | case 2: | |
1688 | sb_offset = 4*2; | |
1689 | break; | |
1690 | default: | |
1691 | return -EINVAL; | |
1692 | } | |
1693 | ||
6fbba4c9 NB |
1694 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
1695 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 | 1696 | ) { |
e7b84f9d | 1697 | pr_err("internal error - sb_offset is wrong\n"); |
96395475 NB |
1698 | abort(); |
1699 | } | |
82d9eba6 | 1700 | |
6fbba4c9 | 1701 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
1702 | return 3; |
1703 | ||
0a2f1894 | 1704 | sbsize = ROUND_UP(sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev), 512); |
82d9eba6 | 1705 | |
308340aa | 1706 | if (awrite(&afd, sb, sbsize) != sbsize) |
82d9eba6 NB |
1707 | return 4; |
1708 | ||
14263cf1 NB |
1709 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1710 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
911cead7 | 1711 | (((char*)sb)+MAX_SB_SIZE); |
14263cf1 | 1712 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
b138214f | 1713 | locate_bitmap1(st, fd, 0); |
308340aa JS |
1714 | if (awrite(&afd, bm, sizeof(*bm)) != sizeof(*bm)) |
1715 | return 5; | |
14263cf1 NB |
1716 | } |
1717 | } | |
570c0542 | 1718 | fsync(fd); |
81a8a694 GJ |
1719 | if (bms->version == BITMAP_MAJOR_CLUSTERED && dlm_funs_ready()) |
1720 | cluster_release_dlmlock(lockid); | |
d15a1f72 | 1721 | |
82d9eba6 NB |
1722 | return 0; |
1723 | } | |
1724 | ||
3da92f27 | 1725 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1726 | |
2fb749d1 NB |
1727 | static unsigned long choose_bm_space(unsigned long devsize) |
1728 | { | |
1729 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1730 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1731 | * NOTE: result must be multiple of 4K else bad things happen |
1732 | * on 4K-sector devices. | |
2fb749d1 | 1733 | */ |
7eef9be2 JS |
1734 | if (devsize < 64*2) |
1735 | return 0; | |
2fb749d1 NB |
1736 | if (devsize - 64*2 >= 200*1024*1024*2) |
1737 | return 128*2; | |
1738 | if (devsize - 4*2 > 8*1024*1024*2) | |
1739 | return 64*2; | |
1740 | return 4*2; | |
1741 | } | |
1742 | ||
e8090005 N |
1743 | static void free_super1(struct supertype *st); |
1744 | ||
e97a7cd0 AP |
1745 | #ifndef MDASSEMBLE |
1746 | ||
198d5478 | 1747 | __u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len); |
cc1799c3 | 1748 | |
e97a7cd0 AP |
1749 | static int write_init_ppl1(struct supertype *st, struct mdinfo *info, int fd) |
1750 | { | |
1751 | struct mdp_superblock_1 *sb = st->sb; | |
1752 | void *buf; | |
1753 | struct ppl_header *ppl_hdr; | |
1754 | int ret; | |
1755 | ||
1756 | ret = posix_memalign(&buf, 4096, PPL_HEADER_SIZE); | |
1757 | if (ret) { | |
1758 | pr_err("Failed to allocate PPL header buffer\n"); | |
1759 | return ret; | |
1760 | } | |
1761 | ||
1762 | memset(buf, 0, PPL_HEADER_SIZE); | |
1763 | ppl_hdr = buf; | |
1764 | memset(ppl_hdr->reserved, 0xff, PPL_HDR_RESERVED); | |
1765 | ppl_hdr->signature = __cpu_to_le32(~crc32c_le(~0, sb->set_uuid, | |
1766 | sizeof(sb->set_uuid))); | |
1767 | ppl_hdr->checksum = __cpu_to_le32(~crc32c_le(~0, buf, PPL_HEADER_SIZE)); | |
1768 | ||
1769 | if (lseek64(fd, info->ppl_sector * 512, SEEK_SET) < 0) { | |
1770 | ret = errno; | |
1771 | perror("Failed to seek to PPL header location"); | |
1772 | } | |
1773 | ||
1774 | if (!ret && write(fd, buf, PPL_HEADER_SIZE) != PPL_HEADER_SIZE) { | |
1775 | ret = errno; | |
1776 | perror("Write PPL header failed"); | |
1777 | } | |
1778 | ||
1779 | if (!ret) | |
1780 | fsync(fd); | |
1781 | ||
1782 | free(buf); | |
1783 | return ret; | |
1784 | } | |
1785 | ||
1786 | #define META_BLOCK_SIZE 4096 | |
1787 | ||
cc1799c3 SL |
1788 | static int write_empty_r5l_meta_block(struct supertype *st, int fd) |
1789 | { | |
1790 | struct r5l_meta_block *mb; | |
1791 | struct mdp_superblock_1 *sb = st->sb; | |
1792 | struct align_fd afd; | |
1793 | __u32 crc; | |
1794 | ||
1795 | init_afd(&afd, fd); | |
1796 | ||
1797 | if (posix_memalign((void**)&mb, 4096, META_BLOCK_SIZE) != 0) { | |
1798 | pr_err("Could not allocate memory for the meta block.\n"); | |
1799 | return 1; | |
1800 | } | |
1801 | ||
1802 | memset(mb, 0, META_BLOCK_SIZE); | |
1803 | ||
1804 | mb->magic = __cpu_to_le32(R5LOG_MAGIC); | |
1805 | mb->version = R5LOG_VERSION; | |
1806 | mb->meta_size = __cpu_to_le32(sizeof(struct r5l_meta_block)); | |
1807 | mb->seq = __cpu_to_le64(random32()); | |
1808 | mb->position = __cpu_to_le64(0); | |
1809 | ||
198d5478 SL |
1810 | crc = crc32c_le(0xffffffff, sb->set_uuid, sizeof(sb->set_uuid)); |
1811 | crc = crc32c_le(crc, (void *)mb, META_BLOCK_SIZE); | |
1812 | mb->checksum = crc; | |
cc1799c3 | 1813 | |
e97a7cd0 | 1814 | if (lseek64(fd, __le64_to_cpu(sb->data_offset) * 512, 0) < 0LL) { |
cc1799c3 SL |
1815 | pr_err("cannot seek to offset of the meta block\n"); |
1816 | goto fail_to_write; | |
1817 | } | |
1818 | ||
1819 | if (awrite(&afd, mb, META_BLOCK_SIZE) != META_BLOCK_SIZE) { | |
1820 | pr_err("failed to store write the meta block \n"); | |
1821 | goto fail_to_write; | |
1822 | } | |
1823 | fsync(fd); | |
1824 | ||
1825 | free(mb); | |
1826 | return 0; | |
1827 | ||
1828 | fail_to_write: | |
1829 | free(mb); | |
1830 | return 1; | |
1831 | } | |
1832 | ||
111d01fc | 1833 | static int write_init_super1(struct supertype *st) |
82d9eba6 | 1834 | { |
3da92f27 | 1835 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1836 | struct supertype *refst; |
111d01fc | 1837 | int rv = 0; |
f21e18ca | 1838 | unsigned long long bm_space; |
111d01fc | 1839 | struct devinfo *di; |
8fac0577 | 1840 | unsigned long long dsize, array_size; |
23bf42cc | 1841 | unsigned long long sb_offset; |
83cd1e97 | 1842 | unsigned long long data_offset; |
1b7eb672 | 1843 | long bm_offset; |
82d9eba6 | 1844 | |
cc1799c3 SL |
1845 | for (di = st->info; di; di = di->next) { |
1846 | if (di->disk.state & (1 << MD_DISK_JOURNAL)) | |
e97a7cd0 | 1847 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_JOURNAL); |
cc1799c3 SL |
1848 | } |
1849 | ||
4687f160 | 1850 | for (di = st->info; di; di = di->next) { |
f4dc5e9b | 1851 | if (di->disk.state & (1 << MD_DISK_FAULTY)) |
111d01fc | 1852 | continue; |
a0c8a17f NB |
1853 | if (di->fd < 0) |
1854 | continue; | |
82d9eba6 | 1855 | |
ba728be7 | 1856 | while (Kill(di->devname, NULL, 0, -1, 1) == 0) |
9277cc77 | 1857 | ; |
82d9eba6 | 1858 | |
111d01fc NB |
1859 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1860 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
adbb382b | 1861 | sb->devflags |= WriteMostly1; |
9a88e7b6 | 1862 | else |
adbb382b | 1863 | sb->devflags &= ~WriteMostly1; |
71574efb N |
1864 | if (di->disk.state & (1<<MD_DISK_FAILFAST)) |
1865 | sb->devflags |= FailFast1; | |
1866 | else | |
1867 | sb->devflags &= ~FailFast1; | |
892debc8 | 1868 | |
c5f71c24 | 1869 | random_uuid(sb->device_uuid); |
83208785 | 1870 | |
01290056 SL |
1871 | if (!(di->disk.state & (1<<MD_DISK_JOURNAL))) |
1872 | sb->events = 0; | |
111d01fc | 1873 | |
e8090005 | 1874 | refst = dup_super(st); |
1011e834 | 1875 | if (load_super1(refst, di->fd, NULL)==0) { |
e8090005 | 1876 | struct mdp_superblock_1 *refsb = refst->sb; |
111d01fc NB |
1877 | |
1878 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1879 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1880 | /* same array, so preserve events and | |
1881 | * dev_number */ | |
1882 | sb->events = refsb->events; | |
1883 | /* bugs in 2.6.17 and earlier mean the | |
1884 | * dev_number chosen in Manage must be preserved | |
1885 | */ | |
1886 | if (get_linux_version() >= 2006018) | |
1887 | sb->dev_number = refsb->dev_number; | |
1888 | } | |
e8090005 | 1889 | free_super1(refst); |
892debc8 | 1890 | } |
e8090005 | 1891 | free(refst); |
34163fc7 | 1892 | |
40114213 JS |
1893 | if (!get_dev_size(di->fd, NULL, &dsize)) { |
1894 | rv = 1; | |
1895 | goto error_out; | |
1896 | } | |
111d01fc | 1897 | dsize >>= 9; |
82d9eba6 | 1898 | |
111d01fc NB |
1899 | if (dsize < 24) { |
1900 | close(di->fd); | |
40114213 JS |
1901 | rv = 2; |
1902 | goto error_out; | |
111d01fc | 1903 | } |
82d9eba6 | 1904 | |
111d01fc NB |
1905 | /* |
1906 | * Calculate the position of the superblock. | |
1907 | * It is always aligned to a 4K boundary and | |
1908 | * depending on minor_version, it can be: | |
1909 | * 0: At least 8K, but less than 12K, from end of device | |
1910 | * 1: At start of device | |
1911 | * 2: 4K from start of device. | |
23bf42cc | 1912 | * data_offset has already been set. |
111d01fc NB |
1913 | */ |
1914 | array_size = __le64_to_cpu(sb->size); | |
1b7eb672 AP |
1915 | |
1916 | /* work out how much space we left for a bitmap */ | |
1917 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1918 | bitmap_super_t *bms = (bitmap_super_t *) | |
1919 | (((char *)sb) + MAX_SB_SIZE); | |
1920 | bm_space = calc_bitmap_size(bms, 4096) >> 9; | |
1921 | bm_offset = (long)__le32_to_cpu(sb->bitmap_offset); | |
e97a7cd0 AP |
1922 | } else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) { |
1923 | bm_space = choose_ppl_space(__le32_to_cpu(sb->chunksize)); | |
1924 | if (bm_space > UINT16_MAX) | |
1925 | bm_space = UINT16_MAX; | |
1926 | if (st->minor_version == 0) { | |
1927 | bm_offset = -bm_space - 8; | |
1928 | if (bm_offset < INT16_MIN) { | |
1929 | bm_offset = INT16_MIN; | |
1930 | bm_space = -bm_offset - 8; | |
1931 | } | |
1932 | } else { | |
1933 | bm_offset = 8; | |
1934 | } | |
1935 | sb->ppl.offset = __cpu_to_le16(bm_offset); | |
1936 | sb->ppl.size = __cpu_to_le16(bm_space); | |
1b7eb672 AP |
1937 | } else { |
1938 | bm_space = choose_bm_space(array_size); | |
1939 | bm_offset = 8; | |
1940 | } | |
111d01fc | 1941 | |
72ca9bcf | 1942 | data_offset = di->data_offset; |
23bf42cc N |
1943 | if (data_offset == INVALID_SECTORS) |
1944 | data_offset = st->data_offset; | |
111d01fc NB |
1945 | switch(st->minor_version) { |
1946 | case 0: | |
1b7eb672 AP |
1947 | /* Add 8 sectors for bad block log */ |
1948 | bm_space += 8; | |
23bf42cc N |
1949 | if (data_offset == INVALID_SECTORS) |
1950 | data_offset = 0; | |
111d01fc NB |
1951 | sb_offset = dsize; |
1952 | sb_offset -= 8*2; | |
1953 | sb_offset &= ~(4*2-1); | |
4c0ea7b0 | 1954 | sb->data_offset = __cpu_to_le64(data_offset); |
111d01fc | 1955 | sb->super_offset = __cpu_to_le64(sb_offset); |
f21e18ca | 1956 | if (sb_offset < array_size + bm_space) |
a380e275 | 1957 | bm_space = sb_offset - array_size; |
111d01fc | 1958 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
bf95d0f3 N |
1959 | if (bm_space >= 8) { |
1960 | sb->bblog_size = __cpu_to_le16(8); | |
1961 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1962 | } | |
111d01fc NB |
1963 | break; |
1964 | case 1: | |
111d01fc | 1965 | case 2: |
1b7eb672 | 1966 | sb_offset = st->minor_version == 2 ? 8 : 0; |
23bf42cc N |
1967 | sb->super_offset = __cpu_to_le64(sb_offset); |
1968 | if (data_offset == INVALID_SECTORS) | |
1b7eb672 | 1969 | data_offset = sb_offset + 16; |
23bf42cc N |
1970 | |
1971 | sb->data_offset = __cpu_to_le64(data_offset); | |
1972 | sb->data_size = __cpu_to_le64(dsize - data_offset); | |
1b7eb672 | 1973 | if (data_offset >= sb_offset+bm_offset+bm_space+8) { |
f79bbf4f | 1974 | sb->bblog_size = __cpu_to_le16(8); |
1b7eb672 AP |
1975 | sb->bblog_offset = __cpu_to_le32(bm_offset + |
1976 | bm_space); | |
1977 | } else if (data_offset >= sb_offset + 16) { | |
bf95d0f3 | 1978 | sb->bblog_size = __cpu_to_le16(8); |
1b7eb672 | 1979 | /* '8' sectors for the bblog, and 'sb_offset' |
bf95d0f3 N |
1980 | * because we want offset from superblock, not |
1981 | * start of device. | |
1982 | */ | |
1b7eb672 AP |
1983 | sb->bblog_offset = __cpu_to_le32(data_offset - |
1984 | 8 - sb_offset); | |
bf95d0f3 | 1985 | } |
111d01fc NB |
1986 | break; |
1987 | default: | |
7a862a02 | 1988 | pr_err("Failed to write invalid metadata format 1.%i to %s\n", |
e7b84f9d | 1989 | st->minor_version, di->devname); |
40114213 JS |
1990 | rv = -EINVAL; |
1991 | goto out; | |
111d01fc | 1992 | } |
86a406c2 N |
1993 | /* Disable badblock log on clusters, or when explicitly requested */ |
1994 | if (st->nodes > 0 || conf_get_create_info()->bblist == 0) { | |
e2efe9e7 N |
1995 | sb->bblog_size = 0; |
1996 | sb->bblog_offset = 0; | |
1997 | } | |
82d9eba6 | 1998 | |
111d01fc NB |
1999 | sb->sb_csum = calc_sb_1_csum(sb); |
2000 | rv = store_super1(st, di->fd); | |
cc1799c3 SL |
2001 | |
2002 | if (rv == 0 && (di->disk.state & (1 << MD_DISK_JOURNAL))) { | |
2003 | rv = write_empty_r5l_meta_block(st, di->fd); | |
2004 | if (rv) | |
2005 | goto error_out; | |
2006 | } | |
2007 | ||
e97a7cd0 AP |
2008 | if (rv == 0 && |
2009 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) { | |
81306e02 | 2010 | rv = st->ss->write_bitmap(st, di->fd, NodeNumUpdate); |
e97a7cd0 AP |
2011 | } else if (rv == 0 && |
2012 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_PPL)) { | |
2013 | struct mdinfo info; | |
2014 | ||
2015 | st->ss->getinfo_super(st, &info, NULL); | |
2016 | rv = st->ss->write_init_ppl(st, &info, di->fd); | |
2017 | } | |
2018 | ||
111d01fc NB |
2019 | close(di->fd); |
2020 | di->fd = -1; | |
4687f160 | 2021 | if (rv) |
2022 | goto error_out; | |
111d01fc | 2023 | } |
40114213 JS |
2024 | error_out: |
2025 | if (rv) | |
e7b84f9d N |
2026 | pr_err("Failed to write metadata to %s\n", |
2027 | di->devname); | |
40114213 | 2028 | out: |
82d9eba6 NB |
2029 | return rv; |
2030 | } | |
111d01fc | 2031 | #endif |
82d9eba6 | 2032 | |
64557c33 | 2033 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
2034 | { |
2035 | /* | |
2036 | * return: | |
2037 | * 0 same, or first was empty, and second was copied | |
2038 | * 1 second had wrong number | |
2039 | * 2 wrong uuid | |
2040 | * 3 wrong other info | |
2041 | */ | |
64557c33 NB |
2042 | struct mdp_superblock_1 *first = st->sb; |
2043 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
2044 | |
2045 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
2046 | return 1; | |
2047 | if (second->major_version != __cpu_to_le32(1)) | |
2048 | return 1; | |
2049 | ||
2050 | if (!first) { | |
3c0bcd46 | 2051 | if (posix_memalign((void**)&first, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 2052 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
2053 | return 1; |
2054 | } | |
41226756 | 2055 | memcpy(first, second, SUPER1_SIZE); |
64557c33 | 2056 | st->sb = first; |
82d9eba6 NB |
2057 | return 0; |
2058 | } | |
2059 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
2060 | return 2; | |
2061 | ||
2062 | if (first->ctime != second->ctime || | |
2063 | first->level != second->level || | |
2064 | first->layout != second->layout || | |
2065 | first->size != second->size || | |
2066 | first->chunksize != second->chunksize || | |
2067 | first->raid_disks != second->raid_disks) | |
2068 | return 3; | |
2069 | return 0; | |
2070 | } | |
2071 | ||
3da92f27 | 2072 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 2073 | { |
5dd497ee | 2074 | unsigned long long dsize; |
82d9eba6 NB |
2075 | unsigned long long sb_offset; |
2076 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
2077 | int uuid[4]; |
2078 | struct bitmap_super_s *bsb; | |
bee8ec56 | 2079 | struct misc_dev_info *misc; |
308340aa | 2080 | struct align_fd afd; |
82d9eba6 | 2081 | |
3da92f27 | 2082 | free_super1(st); |
82d9eba6 | 2083 | |
308340aa JS |
2084 | init_afd(&afd, fd); |
2085 | ||
a17a3de3 | 2086 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 2087 | int bestvers = -1; |
23dc1ae8 | 2088 | struct supertype tst; |
570c0542 NB |
2089 | __u64 bestctime = 0; |
2090 | /* guess... choose latest ctime */ | |
ef609477 | 2091 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
2092 | tst.ss = &super1; |
2093 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
2094 | switch(load_super1(&tst, fd, devname)) { |
2095 | case 0: super = tst.sb; | |
570c0542 NB |
2096 | if (bestvers == -1 || |
2097 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 2098 | bestvers = tst.minor_version; |
570c0542 NB |
2099 | bestctime = __le64_to_cpu(super->ctime); |
2100 | } | |
2101 | free(super); | |
3da92f27 | 2102 | tst.sb = NULL; |
570c0542 | 2103 | break; |
23dc1ae8 | 2104 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
2105 | case 2: break; /* bad, try next */ |
2106 | } | |
2107 | } | |
570c0542 NB |
2108 | if (bestvers != -1) { |
2109 | int rv; | |
23dc1ae8 NB |
2110 | tst.minor_version = bestvers; |
2111 | tst.ss = &super1; | |
911cead7 | 2112 | tst.max_devs = MAX_DEVS; |
3da92f27 | 2113 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
2114 | if (rv == 0) |
2115 | *st = tst; | |
570c0542 NB |
2116 | return rv; |
2117 | } | |
82d9eba6 NB |
2118 | return 2; |
2119 | } | |
beae1dfe NB |
2120 | if (!get_dev_size(fd, devname, &dsize)) |
2121 | return 1; | |
2122 | dsize >>= 9; | |
82d9eba6 | 2123 | |
5dd497ee | 2124 | if (dsize < 24) { |
82d9eba6 | 2125 | if (devname) |
e7b84f9d | 2126 | pr_err("%s is too small for md: size is %llu sectors.\n", |
5dd497ee | 2127 | devname, dsize); |
82d9eba6 NB |
2128 | return 1; |
2129 | } | |
2130 | ||
2131 | /* | |
2132 | * Calculate the position of the superblock. | |
2133 | * It is always aligned to a 4K boundary and | |
14263cf1 | 2134 | * depending on minor_version, it can be: |
82d9eba6 NB |
2135 | * 0: At least 8K, but less than 12K, from end of device |
2136 | * 1: At start of device | |
2137 | * 2: 4K from start of device. | |
2138 | */ | |
2139 | switch(st->minor_version) { | |
2140 | case 0: | |
5dd497ee | 2141 | sb_offset = dsize; |
82d9eba6 NB |
2142 | sb_offset -= 8*2; |
2143 | sb_offset &= ~(4*2-1); | |
2144 | break; | |
2145 | case 1: | |
2146 | sb_offset = 0; | |
2147 | break; | |
2148 | case 2: | |
2149 | sb_offset = 4*2; | |
2150 | break; | |
2151 | default: | |
2152 | return -EINVAL; | |
2153 | } | |
2154 | ||
82d9eba6 NB |
2155 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { |
2156 | if (devname) | |
e7b84f9d | 2157 | pr_err("Cannot seek to superblock on %s: %s\n", |
82d9eba6 NB |
2158 | devname, strerror(errno)); |
2159 | return 1; | |
2160 | } | |
2161 | ||
3c0bcd46 | 2162 | if (posix_memalign((void**)&super, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 2163 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
2164 | return 1; |
2165 | } | |
82d9eba6 | 2166 | |
1dcee1c9 JS |
2167 | memset(super, 0, SUPER1_SIZE); |
2168 | ||
308340aa | 2169 | if (aread(&afd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { |
82d9eba6 | 2170 | if (devname) |
e7b84f9d | 2171 | pr_err("Cannot read superblock on %s\n", |
82d9eba6 NB |
2172 | devname); |
2173 | free(super); | |
2174 | return 1; | |
2175 | } | |
2176 | ||
2177 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
2178 | if (devname) | |
e7b84f9d | 2179 | pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", |
82d9eba6 NB |
2180 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); |
2181 | free(super); | |
2182 | return 2; | |
2183 | } | |
2184 | ||
2185 | if (__le32_to_cpu(super->major_version) != 1) { | |
2186 | if (devname) | |
e7b84f9d | 2187 | pr_err("Cannot interpret superblock on %s - version is %d\n", |
82d9eba6 NB |
2188 | devname, __le32_to_cpu(super->major_version)); |
2189 | free(super); | |
2190 | return 2; | |
2191 | } | |
2192 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
2193 | if (devname) | |
e7b84f9d | 2194 | pr_err("No superblock found on %s (super_offset is wrong)\n", |
82d9eba6 NB |
2195 | devname); |
2196 | free(super); | |
2197 | return 2; | |
2198 | } | |
64557c33 | 2199 | st->sb = super; |
14263cf1 | 2200 | |
911cead7 | 2201 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
bee8ec56 | 2202 | |
911cead7 | 2203 | misc = (struct misc_dev_info*) (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE); |
bee8ec56 | 2204 | misc->device_size = dsize; |
23bf42cc N |
2205 | if (st->data_offset == INVALID_SECTORS) |
2206 | st->data_offset = __le64_to_cpu(super->data_offset); | |
bee8ec56 | 2207 | |
14263cf1 NB |
2208 | /* Now check on the bitmap superblock */ |
2209 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
2210 | return 0; | |
2211 | /* Read the bitmap superblock and make sure it looks | |
2212 | * valid. If it doesn't clear the bit. An --assemble --force | |
2213 | * should get that written out. | |
2214 | */ | |
b138214f | 2215 | locate_bitmap1(st, fd, 0); |
308340aa | 2216 | if (aread(&afd, bsb, 512) != 512) |
14263cf1 NB |
2217 | goto no_bitmap; |
2218 | ||
3da92f27 | 2219 | uuid_from_super1(st, uuid); |
14263cf1 NB |
2220 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
2221 | memcmp(bsb->uuid, uuid, 16) != 0) | |
2222 | goto no_bitmap; | |
2223 | return 0; | |
2224 | ||
2225 | no_bitmap: | |
c0c1acd6 N |
2226 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) |
2227 | & ~MD_FEATURE_BITMAP_OFFSET); | |
82d9eba6 NB |
2228 | return 0; |
2229 | } | |
2230 | ||
82d9eba6 NB |
2231 | static struct supertype *match_metadata_desc1(char *arg) |
2232 | { | |
503975b9 | 2233 | struct supertype *st = xcalloc(1, sizeof(*st)); |
82d9eba6 | 2234 | |
4dd2df09 | 2235 | st->container_devnm[0] = 0; |
82d9eba6 | 2236 | st->ss = &super1; |
911cead7 | 2237 | st->max_devs = MAX_DEVS; |
64557c33 | 2238 | st->sb = NULL; |
23bf42cc | 2239 | st->data_offset = INVALID_SECTORS; |
9b2a22d3 N |
2240 | /* leading zeros can be safely ignored. --detail generates them. */ |
2241 | while (*arg == '0') | |
2242 | arg++; | |
2243 | if (strcmp(arg, "1.0") == 0 || | |
2244 | strcmp(arg, "1.00") == 0) { | |
82d9eba6 NB |
2245 | st->minor_version = 0; |
2246 | return st; | |
2247 | } | |
9b2a22d3 | 2248 | if (strcmp(arg, "1.1") == 0 || |
50827504 | 2249 | strcmp(arg, "1.01") == 0 |
7d5c3964 | 2250 | ) { |
82d9eba6 NB |
2251 | st->minor_version = 1; |
2252 | return st; | |
2253 | } | |
9b2a22d3 | 2254 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 2255 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 2256 | strcmp(arg, "default") == 0 || |
26f467a9 | 2257 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 2258 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
2259 | st->minor_version = 2; |
2260 | return st; | |
2261 | } | |
a17a3de3 | 2262 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 2263 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
2264 | st->minor_version = -1; |
2265 | return st; | |
2266 | } | |
82d9eba6 NB |
2267 | |
2268 | free(st); | |
2269 | return NULL; | |
2270 | } | |
2271 | ||
34163fc7 NB |
2272 | /* find available size on device with this devsize, using |
2273 | * superblock type st, and reserving 'reserve' sectors for | |
2274 | * a possible bitmap | |
2275 | */ | |
641da745 N |
2276 | static __u64 avail_size1(struct supertype *st, __u64 devsize, |
2277 | unsigned long long data_offset) | |
82d9eba6 | 2278 | { |
2a528478 | 2279 | struct mdp_superblock_1 *super = st->sb; |
387fcd59 | 2280 | int bmspace = 0; |
23bf42cc | 2281 | int bbspace = 0; |
82d9eba6 NB |
2282 | if (devsize < 24) |
2283 | return 0; | |
2284 | ||
2a528478 | 2285 | #ifndef MDASSEMBLE |
e97a7cd0 | 2286 | if (__le32_to_cpu(super->feature_map) & MD_FEATURE_BITMAP_OFFSET) { |
2a528478 N |
2287 | /* hot-add. allow for actual size of bitmap */ |
2288 | struct bitmap_super_s *bsb; | |
911cead7 | 2289 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
561ad559 | 2290 | bmspace = calc_bitmap_size(bsb, 4096) >> 9; |
e97a7cd0 AP |
2291 | } else if (__le32_to_cpu(super->feature_map) & MD_FEATURE_PPL) { |
2292 | bmspace = __le16_to_cpu(super->ppl.size); | |
2a528478 N |
2293 | } |
2294 | #endif | |
88af981f | 2295 | /* Allow space for bad block log */ |
641da745 | 2296 | if (super->bblog_size) |
23bf42cc | 2297 | bbspace = __le16_to_cpu(super->bblog_size); |
21e92547 | 2298 | |
a380e275 N |
2299 | if (st->minor_version < 0) |
2300 | /* not specified, so time to set default */ | |
2301 | st->minor_version = 2; | |
387fcd59 | 2302 | |
23bf42cc N |
2303 | if (data_offset == INVALID_SECTORS) |
2304 | data_offset = st->data_offset; | |
2305 | ||
387fcd59 N |
2306 | if (data_offset != INVALID_SECTORS) |
2307 | switch(st->minor_version) { | |
2308 | case 0: | |
23bf42cc | 2309 | return devsize - data_offset - 8*2 - bbspace; |
387fcd59 N |
2310 | case 1: |
2311 | case 2: | |
2312 | return devsize - data_offset; | |
2313 | default: | |
2314 | return 0; | |
2315 | } | |
2316 | ||
2317 | devsize -= bmspace; | |
2318 | ||
34163fc7 NB |
2319 | switch(st->minor_version) { |
2320 | case 0: | |
1bf4e2d9 | 2321 | /* at end */ |
23bf42cc | 2322 | return ((devsize - 8*2 - bbspace ) & ~(4*2-1)); |
34163fc7 | 2323 | case 1: |
1bf4e2d9 | 2324 | /* at start, 4K for superblock and possible bitmap */ |
23bf42cc | 2325 | return devsize - 4*2 - bbspace; |
34163fc7 | 2326 | case 2: |
1bf4e2d9 | 2327 | /* 4k from start, 4K for superblock and possible bitmap */ |
23bf42cc | 2328 | return devsize - (4+4)*2 - bbspace; |
34163fc7 NB |
2329 | } |
2330 | return 0; | |
2331 | } | |
2332 | ||
1bf4e2d9 | 2333 | static int |
3da92f27 | 2334 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
2335 | int *chunkp, int delay, int write_behind, |
2336 | unsigned long long size, | |
21e92547 | 2337 | int may_change, int major) |
34163fc7 NB |
2338 | { |
2339 | /* | |
c0c1acd6 N |
2340 | * If not may_change, then this is a 'Grow' without sysfs support for |
2341 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
2342 | * If may_change, then this is create or a Grow with sysfs syupport, | |
2343 | * and we can put the bitmap wherever we like. | |
34163fc7 | 2344 | * |
f9c25f1d | 2345 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
2346 | */ |
2347 | ||
1bf4e2d9 | 2348 | unsigned long long bits; |
199171a2 | 2349 | unsigned long long max_bits; |
34163fc7 | 2350 | unsigned long long min_chunk; |
199171a2 | 2351 | long offset; |
88af981f | 2352 | long bbl_offset, bbl_size; |
f21e18ca | 2353 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 2354 | int room = 0; |
c0c1acd6 | 2355 | int creating = 0; |
4b3eb4d2 | 2356 | int len; |
3da92f27 | 2357 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2358 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
3b7e9d0c | 2359 | int uuid[4]; |
34163fc7 | 2360 | |
c0c1acd6 N |
2361 | if (__le64_to_cpu(sb->data_size) == 0) |
2362 | /* Must be creating the array, else data_size would be non-zero */ | |
2363 | creating = 1; | |
199171a2 NB |
2364 | switch(st->minor_version) { |
2365 | case 0: | |
a31128d2 N |
2366 | /* either 3K after the superblock (when hot-add), |
2367 | * or some amount of space before. | |
199171a2 | 2368 | */ |
c0c1acd6 | 2369 | if (creating) { |
199171a2 NB |
2370 | /* We are creating array, so we *know* how much room has |
2371 | * been left. | |
2372 | */ | |
2373 | offset = 0; | |
88af981f | 2374 | bbl_size = 8; |
6ac17e73 | 2375 | room = choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; |
199171a2 NB |
2376 | } else { |
2377 | room = __le64_to_cpu(sb->super_offset) | |
2378 | - __le64_to_cpu(sb->data_offset) | |
2379 | - __le64_to_cpu(sb->data_size); | |
88af981f N |
2380 | bbl_size = __le16_to_cpu(sb->bblog_size); |
2381 | if (bbl_size < 8) | |
2382 | bbl_size = 8; | |
2383 | bbl_offset = (__s32)__le32_to_cpu(sb->bblog_offset); | |
2384 | if (bbl_size < -bbl_offset) | |
2385 | bbl_size = -bbl_offset; | |
c0c1acd6 N |
2386 | |
2387 | if (!may_change || (room < 3*2 && | |
7716570e | 2388 | __le32_to_cpu(sb->max_dev) <= 384)) { |
199171a2 NB |
2389 | room = 3*2; |
2390 | offset = 1*2; | |
88af981f | 2391 | bbl_size = 0; |
199171a2 NB |
2392 | } else { |
2393 | offset = 0; /* means movable offset */ | |
2394 | } | |
2395 | } | |
2396 | break; | |
2397 | case 1: | |
2398 | case 2: /* between superblock and data */ | |
c0c1acd6 | 2399 | if (creating) { |
199171a2 | 2400 | offset = 4*2; |
88af981f | 2401 | bbl_size = 8; |
6ac17e73 | 2402 | room = choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; |
199171a2 NB |
2403 | } else { |
2404 | room = __le64_to_cpu(sb->data_offset) | |
2405 | - __le64_to_cpu(sb->super_offset); | |
88af981f N |
2406 | bbl_size = __le16_to_cpu(sb->bblog_size); |
2407 | if (bbl_size) | |
2408 | room = __le32_to_cpu(sb->bblog_offset) + bbl_size; | |
2409 | else | |
2410 | bbl_size = 8; | |
2411 | ||
c0c1acd6 N |
2412 | if (!may_change) { |
2413 | room -= 2; /* Leave 1K for superblock */ | |
199171a2 | 2414 | offset = 2; |
88af981f | 2415 | bbl_size = 0; |
199171a2 | 2416 | } else { |
c0c1acd6 | 2417 | room -= 4*2; /* leave 4K for superblock */ |
199171a2 NB |
2418 | offset = 4*2; |
2419 | } | |
2420 | } | |
2421 | break; | |
ae491d1e | 2422 | default: |
2ec2b7e9 | 2423 | return -ENOSPC; |
199171a2 | 2424 | } |
1bf4e2d9 | 2425 | |
88af981f | 2426 | room -= bbl_size; |
199171a2 NB |
2427 | if (chunk == UnSet && room > 128*2) |
2428 | /* Limit to 128K of bitmap when chunk size not requested */ | |
2429 | room = 128*2; | |
1bf4e2d9 | 2430 | |
268cccac N |
2431 | if (room <= 1) |
2432 | /* No room for a bitmap */ | |
2ec2b7e9 | 2433 | return -ENOSPC; |
268cccac | 2434 | |
199171a2 | 2435 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
2436 | |
2437 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 2438 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
2439 | while (bits > max_bits) { |
2440 | min_chunk *= 2; | |
2441 | bits = (bits+1)/2; | |
2442 | } | |
b8ab2a50 N |
2443 | if (chunk == UnSet) { |
2444 | /* For practical purpose, 64Meg is a good | |
2445 | * default chunk size for internal bitmaps. | |
2446 | */ | |
34163fc7 | 2447 | chunk = min_chunk; |
b8ab2a50 N |
2448 | if (chunk < 64*1024*1024) |
2449 | chunk = 64*1024*1024; | |
2450 | } else if (chunk < min_chunk) | |
2ec2b7e9 | 2451 | return -EINVAL; /* chunk size too small */ |
21e92547 | 2452 | if (chunk == 0) /* rounding problem */ |
2ec2b7e9 | 2453 | return -EINVAL; |
34163fc7 | 2454 | |
199171a2 | 2455 | if (offset == 0) { |
a31128d2 N |
2456 | /* start bitmap on a 4K boundary with enough space for |
2457 | * the bitmap | |
2458 | */ | |
199171a2 | 2459 | bits = (size*512) / chunk + 1; |
a31128d2 N |
2460 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
2461 | room *= 8; /* convert 4K blocks to sectors */ | |
88af981f | 2462 | offset = -room - bbl_size; |
199171a2 NB |
2463 | } |
2464 | ||
34a13953 | 2465 | sb->bitmap_offset = (int32_t)__cpu_to_le32(offset); |
34163fc7 | 2466 | |
c0c1acd6 N |
2467 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) |
2468 | | MD_FEATURE_BITMAP_OFFSET); | |
29e766a5 | 2469 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 2470 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 2471 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
2472 | uuid_from_super1(st, uuid); |
2473 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
2474 | bms->chunksize = __cpu_to_le32(chunk); |
2475 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 2476 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 | 2477 | bms->write_behind = __cpu_to_le32(write_behind); |
529e2aa5 | 2478 | bms->nodes = __cpu_to_le32(st->nodes); |
6d9c7c25 GR |
2479 | if (st->nodes) |
2480 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | |
2481 | | MD_FEATURE_BITMAP_VERSIONED); | |
4b3eb4d2 JS |
2482 | if (st->cluster_name) { |
2483 | len = sizeof(bms->cluster_name); | |
2484 | strncpy((char *)bms->cluster_name, st->cluster_name, len); | |
2485 | bms->cluster_name[len - 1] = '\0'; | |
2486 | } | |
34163fc7 | 2487 | |
199171a2 | 2488 | *chunkp = chunk; |
2ec2b7e9 | 2489 | return 0; |
34163fc7 NB |
2490 | } |
2491 | ||
b138214f | 2492 | static int locate_bitmap1(struct supertype *st, int fd, int node_num) |
34163fc7 | 2493 | { |
34163fc7 | 2494 | unsigned long long offset; |
1e0d770c NB |
2495 | struct mdp_superblock_1 *sb; |
2496 | int mustfree = 0; | |
53e76b1d | 2497 | int ret; |
34163fc7 | 2498 | |
3da92f27 NB |
2499 | if (!st->sb) { |
2500 | if (st->ss->load_super(st, fd, NULL)) | |
53e76b1d | 2501 | return -1; /* no error I hope... */ |
1e0d770c NB |
2502 | mustfree = 1; |
2503 | } | |
3da92f27 | 2504 | sb = st->sb; |
e478dc86 | 2505 | |
53e76b1d GJ |
2506 | if ((__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) |
2507 | ret = 0; | |
2508 | else | |
2509 | ret = -1; | |
1bf4e2d9 | 2510 | offset = __le64_to_cpu(sb->super_offset); |
b138214f | 2511 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset) * (node_num + 1); |
1e0d770c | 2512 | if (mustfree) |
f6d75de8 | 2513 | free(sb); |
1bf4e2d9 | 2514 | lseek64(fd, offset<<9, 0); |
53e76b1d | 2515 | return ret; |
34163fc7 NB |
2516 | } |
2517 | ||
0aa2f15b | 2518 | static int write_bitmap1(struct supertype *st, int fd, enum bitmap_update update) |
34163fc7 | 2519 | { |
3da92f27 | 2520 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2521 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
34163fc7 | 2522 | int rv = 0; |
d669228f | 2523 | void *buf; |
4b3eb4d2 | 2524 | int towrite, n, len; |
308340aa | 2525 | struct align_fd afd; |
95a05b37 | 2526 | unsigned int i = 0; |
7e6e839a | 2527 | unsigned long long total_bm_space, bm_space_per_node; |
308340aa | 2528 | |
0aa2f15b GJ |
2529 | switch (update) { |
2530 | case NameUpdate: | |
2531 | /* update cluster name */ | |
2532 | if (st->cluster_name) { | |
4b3eb4d2 JS |
2533 | len = sizeof(bms->cluster_name); |
2534 | memset((char *)bms->cluster_name, 0, len); | |
2535 | strncpy((char *)bms->cluster_name, | |
2536 | st->cluster_name, len); | |
2537 | bms->cluster_name[len - 1] = '\0'; | |
0aa2f15b GJ |
2538 | } |
2539 | break; | |
7e6e839a GJ |
2540 | case NodeNumUpdate: |
2541 | /* cluster md only supports superblock 1.2 now */ | |
bbc24bb3 | 2542 | if (st->minor_version != 2 && bms->version == BITMAP_MAJOR_CLUSTERED) { |
7e6e839a GJ |
2543 | pr_err("Warning: cluster md only works with superblock 1.2\n"); |
2544 | return -EINVAL; | |
2545 | } | |
2546 | ||
45a87c2f | 2547 | if (bms->version == BITMAP_MAJOR_CLUSTERED) { |
9d67f649 | 2548 | if (__cpu_to_le32(st->nodes) < bms->nodes) { |
45a87c2f GJ |
2549 | /* Since the nodes num is not increased, no need to check the space |
2550 | * is enough or not, just update bms->nodes */ | |
2551 | bms->nodes = __cpu_to_le32(st->nodes); | |
2552 | break; | |
2553 | } | |
2554 | } else { | |
2555 | /* no need to change bms->nodes for other bitmap types */ | |
2556 | if (st->nodes) | |
2557 | pr_err("Warning: --nodes option is only suitable for clustered bitmap\n"); | |
2558 | break; | |
261b57fe GJ |
2559 | } |
2560 | ||
7e6e839a GJ |
2561 | /* Each node has an independent bitmap, it is necessary to calculate the |
2562 | * space is enough or not, first get how many bytes for the total bitmap */ | |
2563 | bm_space_per_node = calc_bitmap_size(bms, 4096); | |
2564 | ||
2565 | total_bm_space = 512 * (__le64_to_cpu(sb->data_offset) - __le64_to_cpu(sb->super_offset)); | |
2566 | total_bm_space = total_bm_space - 4096; /* leave another 4k for superblock */ | |
2567 | ||
2568 | if (bm_space_per_node * st->nodes > total_bm_space) { | |
2569 | pr_err("Warning: The max num of nodes can't exceed %llu\n", | |
2570 | total_bm_space / bm_space_per_node); | |
2571 | return -ENOMEM; | |
2572 | } | |
2573 | ||
2574 | bms->nodes = __cpu_to_le32(st->nodes); | |
2575 | break; | |
0aa2f15b GJ |
2576 | case NoUpdate: |
2577 | default: | |
2578 | break; | |
2579 | } | |
2580 | ||
308340aa | 2581 | init_afd(&afd, fd); |
34163fc7 | 2582 | |
b138214f | 2583 | locate_bitmap1(st, fd, 0); |
34163fc7 | 2584 | |
d669228f JS |
2585 | if (posix_memalign(&buf, 4096, 4096)) |
2586 | return -ENOMEM; | |
2587 | ||
95a05b37 GJ |
2588 | do { |
2589 | /* Only the bitmap[0] should resync | |
2590 | * whole device on initial assembly | |
2591 | */ | |
2592 | if (i) | |
2593 | memset(buf, 0x00, 4096); | |
34163fc7 | 2594 | else |
95a05b37 GJ |
2595 | memset(buf, 0xff, 4096); |
2596 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); | |
2597 | ||
119b66a4 GJ |
2598 | /* |
2599 | * use 4096 boundary if bitmap_offset is aligned | |
2600 | * with 8 sectors, then it should compatible with | |
2601 | * older mdadm. | |
2602 | */ | |
2603 | if (__le32_to_cpu(sb->bitmap_offset) & 7) | |
2604 | towrite = calc_bitmap_size(bms, 512); | |
2605 | else | |
2606 | towrite = calc_bitmap_size(bms, 4096); | |
95a05b37 GJ |
2607 | while (towrite > 0) { |
2608 | n = towrite; | |
2609 | if (n > 4096) | |
2610 | n = 4096; | |
2611 | n = awrite(&afd, buf, n); | |
2612 | if (n > 0) | |
2613 | towrite -= n; | |
2614 | else | |
2615 | break; | |
2616 | if (i) | |
2617 | memset(buf, 0x00, 4096); | |
2618 | else | |
2619 | memset(buf, 0xff, 4096); | |
2620 | } | |
2621 | fsync(fd); | |
2622 | if (towrite) { | |
2623 | rv = -2; | |
34163fc7 | 2624 | break; |
95a05b37 GJ |
2625 | } |
2626 | } while (++i < __le32_to_cpu(bms->nodes)); | |
34163fc7 | 2627 | |
d669228f | 2628 | free(buf); |
34163fc7 | 2629 | return rv; |
82d9eba6 NB |
2630 | } |
2631 | ||
3da92f27 | 2632 | static void free_super1(struct supertype *st) |
df37ffc0 | 2633 | { |
d15a1f72 | 2634 | |
3da92f27 NB |
2635 | if (st->sb) |
2636 | free(st->sb); | |
1cc7f4fe N |
2637 | while (st->info) { |
2638 | struct devinfo *di = st->info; | |
2639 | st->info = di->next; | |
2640 | if (di->fd >= 0) | |
2641 | close(di->fd); | |
2642 | free(di); | |
2643 | } | |
3da92f27 | 2644 | st->sb = NULL; |
df37ffc0 NB |
2645 | } |
2646 | ||
0e600426 | 2647 | #ifndef MDASSEMBLE |
17f25ca6 NB |
2648 | static int validate_geometry1(struct supertype *st, int level, |
2649 | int layout, int raiddisks, | |
c21e737b | 2650 | int *chunk, unsigned long long size, |
af4348dd | 2651 | unsigned long long data_offset, |
2c514b71 | 2652 | char *subdev, unsigned long long *freesize, |
5308f117 | 2653 | int consistency_policy, int verbose) |
17f25ca6 | 2654 | { |
641da745 N |
2655 | unsigned long long ldsize, devsize; |
2656 | int bmspace; | |
23bf42cc | 2657 | unsigned long long headroom; |
17f25ca6 NB |
2658 | int fd; |
2659 | ||
b42f577a N |
2660 | if (level == LEVEL_CONTAINER) { |
2661 | if (verbose) | |
e7b84f9d | 2662 | pr_err("1.x metadata does not support containers\n"); |
17f25ca6 | 2663 | return 0; |
b42f577a | 2664 | } |
7ccc4cc4 | 2665 | if (*chunk == UnSet) |
bb7295f1 N |
2666 | *chunk = DEFAULT_CHUNK; |
2667 | ||
17f25ca6 NB |
2668 | if (!subdev) |
2669 | return 1; | |
2670 | ||
23bf42cc N |
2671 | if (st->minor_version < 0) |
2672 | /* not specified, so time to set default */ | |
2673 | st->minor_version = 2; | |
2674 | ||
17f25ca6 NB |
2675 | fd = open(subdev, O_RDONLY|O_EXCL, 0); |
2676 | if (fd < 0) { | |
2c514b71 | 2677 | if (verbose) |
e7b84f9d | 2678 | pr_err("super1.x cannot open %s: %s\n", |
2c514b71 | 2679 | subdev, strerror(errno)); |
17f25ca6 NB |
2680 | return 0; |
2681 | } | |
2c514b71 | 2682 | |
17f25ca6 NB |
2683 | if (!get_dev_size(fd, subdev, &ldsize)) { |
2684 | close(fd); | |
2685 | return 0; | |
2686 | } | |
2687 | close(fd); | |
2688 | ||
641da745 N |
2689 | devsize = ldsize >> 9; |
2690 | if (devsize < 24) { | |
2691 | *freesize = 0; | |
2692 | return 0; | |
2693 | } | |
2694 | ||
e97a7cd0 AP |
2695 | /* creating: allow suitable space for bitmap or PPL */ |
2696 | bmspace = consistency_policy == CONSISTENCY_POLICY_PPL ? | |
2697 | choose_ppl_space((*chunk)*2) : choose_bm_space(devsize); | |
641da745 | 2698 | |
23bf42cc N |
2699 | if (data_offset == INVALID_SECTORS) |
2700 | data_offset = st->data_offset; | |
2701 | if (data_offset == INVALID_SECTORS) | |
2702 | switch (st->minor_version) { | |
641da745 | 2703 | case 0: |
23bf42cc N |
2704 | data_offset = 0; |
2705 | break; | |
641da745 N |
2706 | case 1: |
2707 | case 2: | |
23bf42cc N |
2708 | /* Choose data offset appropriate for this device |
2709 | * and use as default for whole array. | |
2710 | * The data_offset must allow for bitmap space | |
2711 | * and base metadata, should allow for some headroom | |
2712 | * for reshape, and should be rounded to multiple | |
2713 | * of 1M. | |
2714 | * Headroom is limited to 128M, but aim for about 0.1% | |
641da745 | 2715 | */ |
23bf42cc | 2716 | headroom = 128*1024*2; |
641da745 N |
2717 | while ((headroom << 10) > devsize && |
2718 | (*chunk == 0 || | |
2719 | headroom / 2 >= ((unsigned)(*chunk)*2)*2)) | |
2720 | headroom >>= 1; | |
23bf42cc N |
2721 | data_offset = 12*2 + bmspace + headroom; |
2722 | #define ONE_MEG (2*1024) | |
2723 | if (data_offset > ONE_MEG) | |
2724 | data_offset = (data_offset / ONE_MEG) * ONE_MEG; | |
641da745 N |
2725 | break; |
2726 | } | |
23bf42cc N |
2727 | if (st->data_offset == INVALID_SECTORS) |
2728 | st->data_offset = data_offset; | |
2729 | switch(st->minor_version) { | |
2730 | case 0: /* metadata at end. Round down and subtract space to reserve */ | |
2731 | devsize = (devsize & ~(4ULL*2-1)); | |
e97a7cd0 | 2732 | /* space for metadata, bblog, bitmap/ppl */ |
4c0ea7b0 | 2733 | devsize -= 8*2 + 8 + bmspace; |
23bf42cc N |
2734 | break; |
2735 | case 1: | |
2736 | case 2: | |
2737 | devsize -= data_offset; | |
2738 | break; | |
641da745 | 2739 | } |
23bf42cc | 2740 | *freesize = devsize; |
17f25ca6 NB |
2741 | return 1; |
2742 | } | |
0e600426 | 2743 | #endif /* MDASSEMBLE */ |
17f25ca6 | 2744 | |
afa368f4 N |
2745 | void *super1_make_v0(struct supertype *st, struct mdinfo *info, mdp_super_t *sb0) |
2746 | { | |
2747 | /* Create a v1.0 superblock based on 'info'*/ | |
2748 | void *ret; | |
2749 | struct mdp_superblock_1 *sb; | |
2750 | int i; | |
afa368f4 N |
2751 | unsigned long long offset; |
2752 | ||
2753 | if (posix_memalign(&ret, 4096, 1024) != 0) | |
2754 | return NULL; | |
2755 | sb = ret; | |
2756 | memset(ret, 0, 1024); | |
2757 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); | |
2758 | sb->major_version = __cpu_to_le32(1); | |
2759 | ||
2760 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); | |
2761 | sprintf(sb->set_name, "%d", sb0->md_minor); | |
2762 | sb->ctime = __cpu_to_le32(info->array.ctime+1); | |
2763 | sb->level = __cpu_to_le32(info->array.level); | |
2764 | sb->layout = __cpu_to_le32(info->array.layout); | |
2765 | sb->size = __cpu_to_le64(info->component_size); | |
2766 | sb->chunksize = __cpu_to_le32(info->array.chunk_size/512); | |
2767 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); | |
ccec2685 N |
2768 | if (info->array.level > 0) |
2769 | sb->data_size = sb->size; | |
2770 | else | |
2771 | sb->data_size = st->ss->avail_size(st, st->devsize/512, 0); | |
afa368f4 N |
2772 | sb->resync_offset = MaxSector; |
2773 | sb->max_dev = __cpu_to_le32(MD_SB_DISKS); | |
2774 | sb->dev_number = __cpu_to_le32(info->disk.number); | |
2775 | sb->utime = __cpu_to_le64(info->array.utime); | |
2776 | ||
2777 | offset = st->devsize/512 - 8*2; | |
2778 | offset &= ~(4*2-1); | |
2779 | sb->super_offset = __cpu_to_le64(offset); | |
2780 | //*(__u64*)(st->other + 128 + 8 + 8) = __cpu_to_le64(offset); | |
2781 | ||
c5f71c24 | 2782 | random_uuid(sb->device_uuid); |
afa368f4 N |
2783 | |
2784 | for (i = 0; i < MD_SB_DISKS; i++) { | |
2785 | int state = sb0->disks[i].state; | |
fa7574f6 | 2786 | sb->dev_roles[i] = MD_DISK_ROLE_SPARE; |
afa368f4 N |
2787 | if ((state & (1<<MD_DISK_SYNC)) && |
2788 | !(state & (1<<MD_DISK_FAULTY))) | |
2789 | sb->dev_roles[i] = __cpu_to_le16(sb0->disks[i].raid_disk); | |
2790 | } | |
2791 | sb->sb_csum = calc_sb_1_csum(sb); | |
2792 | return ret; | |
2793 | } | |
2794 | ||
82d9eba6 | 2795 | struct superswitch super1 = { |
c7654afc | 2796 | #ifndef MDASSEMBLE |
82d9eba6 NB |
2797 | .examine_super = examine_super1, |
2798 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 2799 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
2800 | .detail_super = detail_super1, |
2801 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 2802 | .export_detail_super = export_detail_super1, |
111d01fc | 2803 | .write_init_super = write_init_super1, |
0e600426 N |
2804 | .validate_geometry = validate_geometry1, |
2805 | .add_to_super = add_to_super1, | |
6d388a88 | 2806 | .examine_badblocks = examine_badblocks_super1, |
74db60b0 | 2807 | .copy_metadata = copy_metadata1, |
e97a7cd0 | 2808 | .write_init_ppl = write_init_ppl1, |
c7654afc | 2809 | #endif |
83b6208e | 2810 | .match_home = match_home1, |
82d9eba6 NB |
2811 | .uuid_from_super = uuid_from_super1, |
2812 | .getinfo_super = getinfo_super1, | |
00bbdbda | 2813 | .container_content = container_content1, |
82d9eba6 | 2814 | .update_super = update_super1, |
82d9eba6 | 2815 | .init_super = init_super1, |
82d9eba6 | 2816 | .store_super = store_super1, |
82d9eba6 NB |
2817 | .compare_super = compare_super1, |
2818 | .load_super = load_super1, | |
2819 | .match_metadata_desc = match_metadata_desc1, | |
2820 | .avail_size = avail_size1, | |
34163fc7 NB |
2821 | .add_internal_bitmap = add_internal_bitmap1, |
2822 | .locate_bitmap = locate_bitmap1, | |
2823 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 2824 | .free_super = free_super1, |
f277ce36 NB |
2825 | #if __BYTE_ORDER == BIG_ENDIAN |
2826 | .swapuuid = 0, | |
2827 | #else | |
2828 | .swapuuid = 1, | |
2829 | #endif | |
31015d57 | 2830 | .name = "1.x", |
82d9eba6 | 2831 | }; |