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Commit | Line | Data |
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82d9eba6 NB |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
e736b623 | 4 | * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de> |
82d9eba6 NB |
5 | * |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
e736b623 | 22 | * Email: <neilb@suse.de> |
82d9eba6 NB |
23 | */ |
24 | ||
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; | |
34163fc7 NB |
51 | __u32 bitmap_offset; /* sectors after start of superblock that bitmap starts |
52 | * NOTE: signed, so bitmap can be before superblock | |
53 | * only meaningful of feature_map[0] is set. | |
54 | */ | |
b674b5b8 NB |
55 | |
56 | /* These are only valid with feature bit '4' */ | |
b674b5b8 | 57 | __u32 new_level; /* new level we are reshaping to */ |
ac957baa | 58 | __u64 reshape_position; /* next address in array-space for reshape */ |
b674b5b8 NB |
59 | __u32 delta_disks; /* change in number of raid_disks */ |
60 | __u32 new_layout; /* new layout */ | |
a2836f12 | 61 | __u32 new_chunk; /* new chunk size (sectors) */ |
8fe1c44f N |
62 | __u32 new_offset; /* signed number to add to data_offset in new |
63 | * layout. 0 == no-change. This can be | |
64 | * different on each device in the array. | |
65 | */ | |
82d9eba6 NB |
66 | |
67 | /* constant this-device information - 64 bytes */ | |
68 | __u64 data_offset; /* sector start of data, often 0 */ | |
69 | __u64 data_size; /* sectors in this device that can be used for data */ | |
70 | __u64 super_offset; /* sector start of this superblock */ | |
71 | __u64 recovery_offset;/* sectors before this offset (from data_offset) have been recovered */ | |
72 | __u32 dev_number; /* permanent identifier of this device - not role in raid */ | |
73 | __u32 cnt_corrected_read; /* number of read errors that were corrected by re-writing */ | |
74 | __u8 device_uuid[16]; /* user-space setable, ignored by kernel */ | |
5d500228 | 75 | __u8 devflags; /* per-device flags. Only one defined...*/ |
dfd4d8ee | 76 | #define WriteMostly1 1 /* mask for writemostly flag in above */ |
bf95d0f3 N |
77 | /* bad block log. If there are any bad blocks the feature flag is set. |
78 | * if offset and size are non-zero, that space is reserved and available. | |
79 | */ | |
80 | __u8 bblog_shift; /* shift from sectors to block size for badblocklist */ | |
81 | __u16 bblog_size; /* number of sectors reserved for badblocklist */ | |
82 | __u32 bblog_offset; /* sector offset from superblock to bblog, signed */ | |
82d9eba6 NB |
83 | |
84 | /* array state information - 64 bytes */ | |
85 | __u64 utime; /* 40 bits second, 24 btes microseconds */ | |
86 | __u64 events; /* incremented when superblock updated */ | |
87 | __u64 resync_offset; /* data before this offset (from data_offset) known to be in sync */ | |
4180aa4d N |
88 | __u32 sb_csum; /* checksum upto dev_roles[max_dev] */ |
89 | __u32 max_dev; /* size of dev_roles[] array to consider */ | |
82d9eba6 NB |
90 | __u8 pad3[64-32]; /* set to 0 when writing */ |
91 | ||
92 | /* device state information. Indexed by dev_number. | |
93 | * 2 bytes per device | |
94 | * Note there are no per-device state flags. State information is rolled | |
95 | * into the 'roles' value. If a device is spare or faulty, then it doesn't | |
96 | * have a meaningful role. | |
97 | */ | |
98 | __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ | |
99 | }; | |
100 | ||
911cead7 N |
101 | #define MAX_SB_SIZE 4096 |
102 | /* bitmap super size is 256, but we round up to a sector for alignment */ | |
103 | #define BM_SUPER_SIZE 512 | |
104 | #define MAX_DEVS ((int)(MAX_SB_SIZE - sizeof(struct mdp_superblock_1)) / 2) | |
41226756 JS |
105 | #define SUPER1_SIZE (MAX_SB_SIZE + BM_SUPER_SIZE \ |
106 | + sizeof(struct misc_dev_info)) | |
911cead7 | 107 | |
bee8ec56 NB |
108 | struct misc_dev_info { |
109 | __u64 device_size; | |
110 | }; | |
111 | ||
d2cd3ffc NB |
112 | /* feature_map bits */ |
113 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
114 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
115 | * must be honoured | |
116 | */ | |
b674b5b8 | 117 | #define MD_FEATURE_RESHAPE_ACTIVE 4 |
bf95d0f3 | 118 | #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */ |
8fe1c44f N |
119 | #define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an |
120 | * active device with same 'role'. | |
121 | * 'recovery_offset' is also set. | |
122 | */ | |
123 | #define MD_FEATURE_RESHAPE_BACKWARDS 32 /* Reshape doesn't change number | |
124 | * of devices, but is going | |
125 | * backwards anyway. | |
126 | */ | |
127 | #define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */ | |
6d9c7c25 | 128 | #define MD_FEATURE_BITMAP_VERSIONED 256 /* bitmap version number checked properly */ |
8fe1c44f N |
129 | #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \ |
130 | |MD_FEATURE_RECOVERY_OFFSET \ | |
131 | |MD_FEATURE_RESHAPE_ACTIVE \ | |
132 | |MD_FEATURE_BAD_BLOCKS \ | |
133 | |MD_FEATURE_REPLACEMENT \ | |
134 | |MD_FEATURE_RESHAPE_BACKWARDS \ | |
135 | |MD_FEATURE_NEW_OFFSET \ | |
6d9c7c25 | 136 | |MD_FEATURE_BITMAP_VERSIONED \ |
8fe1c44f | 137 | ) |
d2cd3ffc | 138 | |
7e6e839a GJ |
139 | /* return how many bytes are needed for bitmap, for cluster-md each node |
140 | * should have it's own bitmap */ | |
141 | static unsigned int calc_bitmap_size(bitmap_super_t *bms, unsigned int boundary) | |
142 | { | |
143 | unsigned long long bits, bytes; | |
144 | ||
145 | bits = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9); | |
146 | bytes = (bits+7) >> 3; | |
147 | bytes += sizeof(bitmap_super_t); | |
148 | bytes = ROUND_UP(bytes, boundary); | |
149 | ||
150 | return bytes; | |
151 | } | |
152 | ||
82d9eba6 NB |
153 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
154 | { | |
155 | unsigned int disk_csum, csum; | |
156 | unsigned long long newcsum; | |
157 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
158 | unsigned int *isuper = (unsigned int*)sb; | |
82d9eba6 NB |
159 | |
160 | /* make sure I can count... */ | |
161 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
162 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
163 | sizeof(struct mdp_superblock_1) != 256) { | |
164 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
165 | } | |
166 | ||
167 | disk_csum = sb->sb_csum; | |
168 | sb->sb_csum = 0; | |
169 | newcsum = 0; | |
e4c72d1d | 170 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
171 | newcsum += __le32_to_cpu(*isuper); |
172 | isuper++; | |
173 | } | |
82d9eba6 NB |
174 | |
175 | if (size == 2) | |
176 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
177 | ||
178 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
179 | sb->sb_csum = disk_csum; | |
83205b64 | 180 | return __cpu_to_le32(csum); |
82d9eba6 NB |
181 | } |
182 | ||
308340aa JS |
183 | /* |
184 | * Information related to file descriptor used for aligned reads/writes. | |
185 | * Cache the block size. | |
186 | */ | |
187 | struct align_fd { | |
188 | int fd; | |
189 | int blk_sz; | |
190 | }; | |
191 | ||
192 | static void init_afd(struct align_fd *afd, int fd) | |
193 | { | |
194 | afd->fd = fd; | |
195 | ||
196 | if (ioctl(afd->fd, BLKSSZGET, &afd->blk_sz) != 0) | |
197 | afd->blk_sz = 512; | |
198 | } | |
199 | ||
5ea022a1 | 200 | static char abuf[4096+4096]; |
308340aa | 201 | static int aread(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
202 | { |
203 | /* aligned read. | |
204 | * On devices with a 4K sector size, we need to read | |
205 | * the full sector and copy relevant bits into | |
206 | * the buffer | |
207 | */ | |
6ef89052 | 208 | int bsize, iosize; |
5ea022a1 N |
209 | char *b; |
210 | int n; | |
6ef89052 | 211 | |
308340aa JS |
212 | bsize = afd->blk_sz; |
213 | ||
214 | if (!bsize || bsize > 4096 || len > 4096) { | |
215 | if (!bsize) | |
7a862a02 | 216 | fprintf(stderr, "WARNING - aread() called with invalid block size\n"); |
5ea022a1 | 217 | return -1; |
308340aa | 218 | } |
0a2f1894 | 219 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 220 | |
6ef89052 N |
221 | for (iosize = 0; iosize < len; iosize += bsize) |
222 | ; | |
308340aa | 223 | n = read(afd->fd, b, iosize); |
5ea022a1 N |
224 | if (n <= 0) |
225 | return n; | |
308340aa | 226 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
227 | if (n > len) |
228 | n = len; | |
229 | memcpy(buf, b, n); | |
230 | return n; | |
231 | } | |
232 | ||
308340aa | 233 | static int awrite(struct align_fd *afd, void *buf, int len) |
5ea022a1 N |
234 | { |
235 | /* aligned write. | |
236 | * On devices with a 4K sector size, we need to write | |
237 | * the full sector. We pre-read if the sector is larger | |
238 | * than the write. | |
239 | * The address must be sector-aligned. | |
240 | */ | |
6ef89052 | 241 | int bsize, iosize; |
5ea022a1 N |
242 | char *b; |
243 | int n; | |
308340aa JS |
244 | |
245 | bsize = afd->blk_sz; | |
246 | if (!bsize || bsize > 4096 || len > 4096) { | |
247 | if (!bsize) | |
7a862a02 | 248 | fprintf(stderr, "WARNING - awrite() called with invalid block size\n"); |
5ea022a1 | 249 | return -1; |
308340aa | 250 | } |
0a2f1894 | 251 | b = ROUND_UP_PTR((char *)abuf, 4096); |
5ea022a1 | 252 | |
6ef89052 N |
253 | for (iosize = 0; iosize < len ; iosize += bsize) |
254 | ; | |
255 | ||
256 | if (len != iosize) { | |
308340aa | 257 | n = read(afd->fd, b, iosize); |
6ef89052 N |
258 | if (n <= 0) |
259 | return n; | |
308340aa | 260 | lseek(afd->fd, -n, 1); |
6ef89052 N |
261 | } |
262 | ||
5ea022a1 | 263 | memcpy(b, buf, len); |
308340aa | 264 | n = write(afd->fd, b, iosize); |
5ea022a1 N |
265 | if (n <= 0) |
266 | return n; | |
308340aa | 267 | lseek(afd->fd, len - n, 1); |
5ea022a1 N |
268 | return len; |
269 | } | |
270 | ||
c7654afc | 271 | #ifndef MDASSEMBLE |
3da92f27 | 272 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 273 | { |
3da92f27 | 274 | struct mdp_superblock_1 *sb = st->sb; |
0aa2f15b | 275 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
82d9eba6 | 276 | time_t atime; |
f21e18ca | 277 | unsigned int d; |
e8e1c176 | 278 | int role; |
4180aa4d | 279 | int delta_extra = 0; |
82d9eba6 NB |
280 | int i; |
281 | char *c; | |
a1cbd7d0 | 282 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 283 | int layout; |
a17a3de3 | 284 | unsigned long long sb_offset; |
5e1863d4 | 285 | struct mdinfo info; |
82d9eba6 NB |
286 | |
287 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
288 | printf(" Version : 1"); |
289 | sb_offset = __le64_to_cpu(sb->super_offset); | |
290 | if (sb_offset <= 4) | |
291 | printf(".1\n"); | |
292 | else if (sb_offset <= 8) | |
293 | printf(".2\n"); | |
294 | else | |
295 | printf(".0\n"); | |
91eedefc | 296 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
297 | printf(" Array UUID : "); |
298 | for (i=0; i<16; i++) { | |
82d9eba6 | 299 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 300 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
301 | } |
302 | printf("\n"); | |
a1cbd7d0 NB |
303 | printf(" Name : %.32s", sb->set_name); |
304 | if (l > 0 && l < 32 && | |
305 | sb->set_name[l] == ':' && | |
306 | strncmp(sb->set_name, homehost, l) == 0) | |
307 | printf(" (local to host %s)", homehost); | |
308 | printf("\n"); | |
0aa2f15b | 309 | if (bms->nodes > 0) |
2cf42394 | 310 | printf(" Cluster Name : %-64s\n", bms->cluster_name); |
82d9eba6 NB |
311 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
312 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
313 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
314 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
315 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
316 | printf("\n"); | |
5cda0964 | 317 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
318 | (unsigned long long)__le64_to_cpu(sb->data_size), |
319 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 320 | if (__le32_to_cpu(sb->level) > 0) { |
d4633e06 | 321 | int ddsks = 0, ddsks_denom = 1; |
b674b5b8 NB |
322 | switch(__le32_to_cpu(sb->level)) { |
323 | case 1: ddsks=1;break; | |
324 | case 4: | |
83205b64 NB |
325 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
326 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
327 | case 10: | |
328 | layout = __le32_to_cpu(sb->layout); | |
d4633e06 N |
329 | ddsks = __le32_to_cpu(sb->raid_disks); |
330 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
b674b5b8 | 331 | } |
d4633e06 N |
332 | if (ddsks) { |
333 | long long asize = __le64_to_cpu(sb->size); | |
334 | asize = (asize << 9) * ddsks / ddsks_denom; | |
83205b64 | 335 | printf(" Array Size : %llu%s\n", |
d4633e06 N |
336 | asize >> 10, human_size(asize)); |
337 | } | |
b674b5b8 | 338 | if (sb->size != sb->data_size) |
5cda0964 | 339 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
340 | (unsigned long long)__le64_to_cpu(sb->size), |
341 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 342 | } |
82d9eba6 | 343 | if (sb->data_offset) |
199171a2 NB |
344 | printf(" Data Offset : %llu sectors\n", |
345 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
8772113a N |
346 | if (sb->new_offset && |
347 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) { | |
8fe1c44f N |
348 | unsigned long long offset = __le64_to_cpu(sb->data_offset); |
349 | offset += (signed)(int32_t)__le32_to_cpu(sb->new_offset); | |
350 | printf(" New Offset : %llu sectors\n", offset); | |
351 | } | |
199171a2 NB |
352 | printf(" Super Offset : %llu sectors\n", |
353 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc NB |
354 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
355 | printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
5e1863d4 N |
356 | |
357 | st->ss->getinfo_super(st, &info, NULL); | |
358 | if (info.space_after != 1 && | |
359 | !(__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) | |
360 | printf(" Unused Space : before=%llu sectors, after=%llu sectors\n", | |
361 | info.space_before, info.space_after); | |
362 | ||
a3fd117c | 363 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
364 | printf(" Device UUID : "); |
365 | for (i=0; i<16; i++) { | |
82d9eba6 | 366 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 367 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
368 | } |
369 | printf("\n"); | |
b674b5b8 | 370 | printf("\n"); |
91eedefc NB |
371 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
372 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 373 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
8fac0577 | 374 | } |
bf95d0f3 | 375 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 376 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
377 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
378 | if (__le32_to_cpu(sb->delta_disks)) { | |
379 | printf(" Delta Devices : %d", __le32_to_cpu(sb->delta_disks)); | |
4180aa4d N |
380 | printf(" (%d->%d)\n", |
381 | __le32_to_cpu(sb->raid_disks)-__le32_to_cpu(sb->delta_disks), | |
382 | __le32_to_cpu(sb->raid_disks)); | |
383 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
384 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
385 | } |
386 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
387 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
388 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
389 | } | |
390 | if (__le32_to_cpu(sb->new_layout) != __le32_to_cpu(sb->layout)) { | |
391 | if (__le32_to_cpu(sb->level) == 5) { | |
392 | c = map_num(r5layout, __le32_to_cpu(sb->new_layout)); | |
393 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
394 | } | |
fe77a154 N |
395 | if (__le32_to_cpu(sb->level) == 6) { |
396 | c = map_num(r6layout, __le32_to_cpu(sb->new_layout)); | |
397 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
398 | } | |
b674b5b8 | 399 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
400 | printf(" New Layout :"); |
401 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
402 | printf("\n"); | |
b674b5b8 NB |
403 | } |
404 | } | |
405 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
406 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
407 | printf("\n"); | |
408 | } | |
dfd4d8ee | 409 | if (sb->devflags) { |
62184891 | 410 | printf(" Flags :"); |
34163fc7 | 411 | if (sb->devflags & WriteMostly1) |
dfd4d8ee NB |
412 | printf(" write-mostly"); |
413 | printf("\n"); | |
414 | } | |
82d9eba6 NB |
415 | |
416 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
417 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
418 | ||
bf95d0f3 N |
419 | if (sb->bblog_size && sb->bblog_offset) { |
420 | printf(" Bad Block Log : %d entries available at offset %ld sectors", | |
421 | __le16_to_cpu(sb->bblog_size)*512/8, | |
d6e4b44f | 422 | (long)(int32_t)__le32_to_cpu(sb->bblog_offset)); |
bf95d0f3 N |
423 | if (sb->feature_map & |
424 | __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
425 | printf(" - bad blocks present."); | |
426 | printf("\n"); | |
427 | } | |
428 | ||
82d9eba6 NB |
429 | if (calc_sb_1_csum(sb) == sb->sb_csum) |
430 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
431 | else | |
432 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
433 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 434 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
435 | printf("\n"); |
436 | if (__le32_to_cpu(sb->level) == 5) { | |
437 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
438 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
439 | } | |
fe77a154 N |
440 | if (__le32_to_cpu(sb->level) == 6) { |
441 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
442 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
443 | } | |
265e0f17 NB |
444 | if (__le32_to_cpu(sb->level) == 10) { |
445 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
446 | printf(" Layout :"); |
447 | print_r10_layout(lo); | |
448 | printf("\n"); | |
265e0f17 | 449 | } |
82d9eba6 NB |
450 | switch(__le32_to_cpu(sb->level)) { |
451 | case 0: | |
452 | case 4: | |
453 | case 5: | |
d2cd3ffc NB |
454 | case 6: |
455 | case 10: | |
b674b5b8 | 456 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
457 | break; |
458 | case -1: | |
b674b5b8 | 459 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
460 | break; |
461 | default: break; | |
462 | } | |
463 | printf("\n"); | |
e8e1c176 N |
464 | #if 0 |
465 | /* This turns out to just be confusing */ | |
c3684618 NB |
466 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
467 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
468 | if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff) | |
469 | break; | |
470 | for (d=0; d < i; d++) { | |
471 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
472 | if (d) printf(", "); | |
473 | if (role == 0xffff) printf("empty"); | |
474 | else if(role == 0xfffe) printf("failed"); | |
475 | else printf("%d", role); | |
476 | } | |
477 | printf(")\n"); | |
e8e1c176 N |
478 | #endif |
479 | printf(" Device Role : "); | |
480 | d = __le32_to_cpu(sb->dev_number); | |
4180aa4d | 481 | if (d < __le32_to_cpu(sb->max_dev)) |
e8e1c176 N |
482 | role = __le16_to_cpu(sb->dev_roles[d]); |
483 | else | |
484 | role = 0xFFFF; | |
485 | if (role >= 0xFFFE) | |
486 | printf("spare\n"); | |
24c7bc84 N |
487 | else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_REPLACEMENT)) |
488 | printf("Replacement device %d\n", role); | |
e8e1c176 N |
489 | else |
490 | printf("Active device %d\n", role); | |
491 | ||
82d9eba6 | 492 | printf(" Array State : "); |
4180aa4d | 493 | for (d=0; d<__le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 494 | int cnt = 0; |
f21e18ca | 495 | unsigned int i; |
82d9eba6 | 496 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 497 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 498 | if (role == d) |
82d9eba6 | 499 | cnt++; |
82d9eba6 | 500 | } |
24c7bc84 N |
501 | if (cnt == 2) |
502 | printf("R"); | |
503 | else if (cnt == 1) | |
504 | printf("A"); | |
505 | else if (cnt == 0) | |
506 | printf("."); | |
507 | else | |
508 | printf("?"); | |
82d9eba6 | 509 | } |
e8e1c176 N |
510 | #if 0 |
511 | /* This is confusing too */ | |
6fbba4c9 | 512 | faulty = 0; |
82d9eba6 NB |
513 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
514 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
6fbba4c9 NB |
515 | if (role == 0xFFFE) |
516 | faulty++; | |
82d9eba6 | 517 | } |
82d9eba6 | 518 | if (faulty) printf(" %d failed", faulty); |
e8e1c176 | 519 | #endif |
24c7bc84 | 520 | printf(" ('A' == active, '.' == missing, 'R' == replacing)"); |
82d9eba6 NB |
521 | printf("\n"); |
522 | } | |
523 | ||
061f2c6a | 524 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 525 | { |
3da92f27 | 526 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 527 | int i; |
a17a3de3 | 528 | unsigned long long sb_offset; |
2998bc01 | 529 | char *nm; |
b015e6c2 | 530 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
531 | |
532 | nm = strchr(sb->set_name, ':'); | |
533 | if (nm) | |
534 | nm++; | |
535 | else if (sb->set_name[0]) | |
536 | nm = sb->set_name; | |
537 | else | |
cf8de691 | 538 | nm = NULL; |
82d9eba6 | 539 | |
7103b9b8 N |
540 | printf("ARRAY "); |
541 | if (nm) { | |
542 | printf("/dev/md/"); | |
543 | print_escape(nm); | |
544 | putchar(' '); | |
545 | } | |
061f2c6a N |
546 | if (verbose && c) |
547 | printf(" level=%s", c); | |
a17a3de3 DL |
548 | sb_offset = __le64_to_cpu(sb->super_offset); |
549 | if (sb_offset <= 4) | |
e9a0e728 | 550 | printf(" metadata=1.1 "); |
a17a3de3 | 551 | else if (sb_offset <= 8) |
e9a0e728 | 552 | printf(" metadata=1.2 "); |
a17a3de3 | 553 | else |
e9a0e728 | 554 | printf(" metadata=1.0 "); |
061f2c6a N |
555 | if (verbose) |
556 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
557 | printf("UUID="); | |
82d9eba6 | 558 | for (i=0; i<16; i++) { |
82d9eba6 | 559 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 560 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 561 | } |
7103b9b8 N |
562 | if (sb->set_name[0]) { |
563 | printf(" name="); | |
564 | print_quoted(sb->set_name); | |
565 | } | |
82d9eba6 NB |
566 | printf("\n"); |
567 | } | |
568 | ||
0d726f17 KS |
569 | static void export_examine_super1(struct supertype *st) |
570 | { | |
571 | struct mdp_superblock_1 *sb = st->sb; | |
572 | int i; | |
573 | int len = 32; | |
80730bae | 574 | int layout; |
0d726f17 KS |
575 | |
576 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
577 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
578 | for (i=0; i<32; i++) | |
579 | if (sb->set_name[i] == '\n' || | |
580 | sb->set_name[i] == '\0') { | |
581 | len = i; | |
582 | break; | |
583 | } | |
584 | if (len) | |
585 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
80730bae MN |
586 | if (__le32_to_cpu(sb->level) > 0) { |
587 | int ddsks = 0, ddsks_denom = 1; | |
588 | switch(__le32_to_cpu(sb->level)) { | |
589 | case 1: ddsks=1;break; | |
590 | case 4: | |
591 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; | |
592 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
593 | case 10: | |
594 | layout = __le32_to_cpu(sb->layout); | |
595 | ddsks = __le32_to_cpu(sb->raid_disks); | |
596 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
597 | } | |
598 | if (ddsks) { | |
599 | long long asize = __le64_to_cpu(sb->size); | |
600 | asize = (asize << 9) * ddsks / ddsks_denom; | |
601 | printf("MD_ARRAY_SIZE=%s\n",human_size_brief(asize,JEDEC)); | |
602 | } | |
603 | } | |
0d726f17 KS |
604 | printf("MD_UUID="); |
605 | for (i=0; i<16; i++) { | |
606 | if ((i&3)==0 && i != 0) printf(":"); | |
607 | printf("%02x", sb->set_uuid[i]); | |
608 | } | |
609 | printf("\n"); | |
610 | printf("MD_UPDATE_TIME=%llu\n", | |
611 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
612 | printf("MD_DEV_UUID="); | |
613 | for (i=0; i<16; i++) { | |
614 | if ((i&3)==0 && i != 0) printf(":"); | |
615 | printf("%02x", sb->device_uuid[i]); | |
616 | } | |
617 | printf("\n"); | |
618 | printf("MD_EVENTS=%llu\n", | |
619 | (unsigned long long)__le64_to_cpu(sb->events)); | |
620 | } | |
621 | ||
74db60b0 N |
622 | static int copy_metadata1(struct supertype *st, int from, int to) |
623 | { | |
624 | /* Read superblock. If it looks good, write it out. | |
625 | * Then if a bitmap is present, copy that. | |
626 | * And if a bad-block-list is present, copy that too. | |
627 | */ | |
628 | void *buf; | |
629 | unsigned long long dsize, sb_offset; | |
630 | const int bufsize = 4*1024; | |
631 | struct mdp_superblock_1 super, *sb; | |
632 | ||
633 | if (posix_memalign(&buf, 4096, bufsize) != 0) | |
634 | return 1; | |
635 | ||
636 | if (!get_dev_size(from, NULL, &dsize)) | |
637 | goto err; | |
638 | ||
639 | dsize >>= 9; | |
640 | if (dsize < 24) | |
641 | goto err; | |
642 | switch(st->minor_version) { | |
643 | case 0: | |
644 | sb_offset = dsize; | |
645 | sb_offset -= 8*2; | |
646 | sb_offset &= ~(4*2-1); | |
647 | break; | |
648 | case 1: | |
649 | sb_offset = 0; | |
650 | break; | |
651 | case 2: | |
652 | sb_offset = 4*2; | |
653 | break; | |
654 | default: | |
655 | goto err; | |
656 | } | |
657 | ||
658 | if (lseek64(from, sb_offset << 9, 0) < 0LL) | |
659 | goto err; | |
660 | if (read(from, buf, bufsize) != bufsize) | |
661 | goto err; | |
662 | ||
663 | sb = buf; | |
664 | super = *sb; // save most of sb for when we reuse buf | |
665 | ||
666 | if (__le32_to_cpu(super.magic) != MD_SB_MAGIC || | |
667 | __le32_to_cpu(super.major_version) != 1 || | |
668 | __le64_to_cpu(super.super_offset) != sb_offset || | |
669 | calc_sb_1_csum(sb) != super.sb_csum) | |
670 | goto err; | |
671 | ||
672 | if (lseek64(to, sb_offset << 9, 0) < 0LL) | |
673 | goto err; | |
674 | if (write(to, buf, bufsize) != bufsize) | |
675 | goto err; | |
676 | ||
677 | if (super.feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
678 | unsigned long long bitmap_offset = sb_offset; | |
679 | int bytes = 4096; // just an estimate. | |
680 | int written = 0; | |
681 | struct align_fd afrom, ato; | |
682 | ||
683 | init_afd(&afrom, from); | |
684 | init_afd(&ato, to); | |
685 | ||
686 | bitmap_offset += (int32_t)__le32_to_cpu(super.bitmap_offset); | |
687 | ||
688 | if (lseek64(from, bitmap_offset<<9, 0) < 0) | |
689 | goto err; | |
690 | if (lseek64(to, bitmap_offset<<9, 0) < 0) | |
691 | goto err; | |
692 | ||
693 | for (written = 0; written < bytes ; ) { | |
694 | int n = bytes - written; | |
695 | if (n > 4096) | |
696 | n = 4096; | |
697 | if (aread(&afrom, buf, n) != n) | |
698 | goto err; | |
699 | if (written == 0) { | |
700 | /* have the header, can calculate | |
701 | * correct bitmap bytes */ | |
702 | bitmap_super_t *bms; | |
74db60b0 | 703 | bms = (void*)buf; |
4a3d29ed | 704 | bytes = calc_bitmap_size(bms, 512); |
74db60b0 N |
705 | if (n > bytes) |
706 | n = bytes; | |
707 | } | |
708 | if (awrite(&ato, buf, n) != n) | |
709 | goto err; | |
710 | written += n; | |
711 | } | |
712 | } | |
713 | ||
714 | if (super.bblog_size != 0 && | |
715 | __le32_to_cpu(super.bblog_size) <= 100 && | |
716 | super.bblog_offset != 0 && | |
717 | (super.feature_map & __le32_to_cpu(MD_FEATURE_BAD_BLOCKS))) { | |
718 | /* There is a bad block log */ | |
719 | unsigned long long bb_offset = sb_offset; | |
720 | int bytes = __le32_to_cpu(super.bblog_size) * 512; | |
721 | int written = 0; | |
722 | struct align_fd afrom, ato; | |
723 | ||
724 | init_afd(&afrom, from); | |
725 | init_afd(&ato, to); | |
726 | ||
727 | bb_offset += (int32_t)__le32_to_cpu(super.bblog_offset); | |
728 | ||
729 | if (lseek64(from, bb_offset<<9, 0) < 0) | |
730 | goto err; | |
731 | if (lseek64(to, bb_offset<<9, 0) < 0) | |
732 | goto err; | |
733 | ||
734 | for (written = 0; written < bytes ; ) { | |
735 | int n = bytes - written; | |
736 | if (n > 4096) | |
737 | n = 4096; | |
738 | if (aread(&afrom, buf, n) != n) | |
739 | goto err; | |
740 | ||
741 | if (awrite(&ato, buf, n) != n) | |
742 | goto err; | |
743 | written += n; | |
744 | } | |
745 | } | |
746 | ||
747 | free(buf); | |
748 | return 0; | |
749 | ||
750 | err: | |
751 | free(buf); | |
752 | return 1; | |
753 | } | |
754 | ||
3da92f27 | 755 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 756 | { |
3da92f27 | 757 | struct mdp_superblock_1 *sb = st->sb; |
0aa2f15b | 758 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
82d9eba6 | 759 | int i; |
b6750aa8 | 760 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 761 | |
b6750aa8 NB |
762 | printf(" Name : %.32s", sb->set_name); |
763 | if (l > 0 && l < 32 && | |
764 | sb->set_name[l] == ':' && | |
765 | strncmp(sb->set_name, homehost, l) == 0) | |
766 | printf(" (local to host %s)", homehost); | |
0aa2f15b | 767 | if (bms->nodes > 0) |
2cf42394 | 768 | printf("\n Cluster Name : %-64s", bms->cluster_name); |
b6750aa8 | 769 | printf("\n UUID : "); |
82d9eba6 | 770 | for (i=0; i<16; i++) { |
82d9eba6 | 771 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 772 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 773 | } |
570c0542 | 774 | printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
775 | } |
776 | ||
3da92f27 | 777 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 778 | { |
3da92f27 | 779 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
780 | int i; |
781 | ||
7103b9b8 N |
782 | if (sb->set_name[0]) { |
783 | printf(" name="); | |
784 | print_quoted(sb->set_name); | |
785 | } | |
82d9eba6 NB |
786 | printf(" UUID="); |
787 | for (i=0; i<16; i++) { | |
82d9eba6 | 788 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 789 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
790 | } |
791 | } | |
792 | ||
0d726f17 | 793 | static void export_detail_super1(struct supertype *st) |
54bad364 | 794 | { |
3da92f27 | 795 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
796 | int i; |
797 | int len = 32; | |
798 | ||
799 | for (i=0; i<32; i++) | |
800 | if (sb->set_name[i] == '\n' || | |
801 | sb->set_name[i] == '\0') { | |
802 | len = i; | |
803 | break; | |
804 | } | |
805 | if (len) | |
806 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
807 | } |
808 | ||
6d388a88 N |
809 | static int examine_badblocks_super1(struct supertype *st, int fd, char *devname) |
810 | { | |
811 | struct mdp_superblock_1 *sb = st->sb; | |
812 | unsigned long long offset; | |
813 | int size; | |
814 | __u64 *bbl, *bbp; | |
815 | int i; | |
816 | ||
817 | if (!sb->bblog_size || __le32_to_cpu(sb->bblog_size) > 100 | |
818 | || !sb->bblog_offset){ | |
819 | printf("No bad-blocks list configured on %s\n", devname); | |
820 | return 0; | |
821 | } | |
822 | if ((sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
823 | == 0) { | |
824 | printf("Bad-blocks list is empty in %s\n", devname); | |
825 | return 0; | |
826 | } | |
827 | ||
828 | size = __le32_to_cpu(sb->bblog_size)* 512; | |
0cf83229 | 829 | if (posix_memalign((void**)&bbl, 4096, size) != 0) { |
1ade5cc1 | 830 | pr_err("could not allocate badblocks list\n"); |
0cf83229 N |
831 | return 0; |
832 | } | |
6d388a88 N |
833 | offset = __le64_to_cpu(sb->super_offset) + |
834 | (int)__le32_to_cpu(sb->bblog_offset); | |
835 | offset <<= 9; | |
836 | if (lseek64(fd, offset, 0) < 0) { | |
837 | pr_err("Cannot seek to bad-blocks list\n"); | |
838 | return 1; | |
839 | } | |
840 | if (read(fd, bbl, size) != size) { | |
841 | pr_err("Cannot read bad-blocks list\n"); | |
842 | return 1; | |
843 | } | |
844 | /* 64bits per entry. 10 bits is block-count, 54 bits is block | |
845 | * offset. Blocks are sectors unless bblog->shift makes them bigger | |
846 | */ | |
847 | bbp = (__u64*)bbl; | |
848 | printf("Bad-blocks on %s:\n", devname); | |
849 | for (i = 0; i < size/8; i++, bbp++) { | |
850 | __u64 bb = __le64_to_cpu(*bbp); | |
851 | int count = bb & 0x3ff; | |
852 | unsigned long long sector = bb >> 10; | |
853 | ||
854 | if (bb + 1 == 0) | |
855 | break; | |
856 | ||
857 | sector <<= sb->bblog_shift; | |
858 | count <<= sb->bblog_shift; | |
859 | ||
860 | printf("%20llu for %d sectors\n", sector, count); | |
861 | } | |
862 | return 0; | |
863 | } | |
864 | ||
c7654afc NB |
865 | #endif |
866 | ||
3da92f27 | 867 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 868 | { |
3da92f27 | 869 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
870 | int l = homehost ? strlen(homehost) : 0; |
871 | ||
872 | return (l > 0 && l < 32 && | |
873 | sb->set_name[l] == ':' && | |
874 | strncmp(sb->set_name, homehost, l) == 0); | |
875 | } | |
876 | ||
3da92f27 | 877 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 878 | { |
3da92f27 | 879 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
880 | char *cuuid = (char*)uuid; |
881 | int i; | |
882 | for (i=0; i<16; i++) | |
883 | cuuid[i] = super->set_uuid[i]; | |
884 | } | |
885 | ||
a5d85af7 | 886 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 887 | { |
3da92f27 | 888 | struct mdp_superblock_1 *sb = st->sb; |
80bf9135 N |
889 | struct bitmap_super_s *bsb = (void*)(((char*)sb)+MAX_SB_SIZE); |
890 | struct misc_dev_info *misc = (void*)(((char*)sb)+MAX_SB_SIZE+BM_SUPER_SIZE); | |
82d9eba6 | 891 | int working = 0; |
f21e18ca | 892 | unsigned int i; |
a5d85af7 N |
893 | unsigned int role; |
894 | unsigned int map_disks = info->array.raid_disks; | |
80bf9135 N |
895 | unsigned long long super_offset; |
896 | unsigned long long data_size; | |
82d9eba6 | 897 | |
95eeceeb | 898 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 899 | info->array.major_version = 1; |
b8ac1967 | 900 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
901 | info->array.patch_version = 0; |
902 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
903 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 904 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
905 | info->array.md_minor = -1; |
906 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 907 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 908 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c | 909 | info->array.state = |
d5977056 | 910 | (__le64_to_cpu(sb->resync_offset) == MaxSector) |
4855f95c | 911 | ? 1 : 0; |
06bd6793 GJ |
912 | if (__le32_to_cpu(bsb->nodes) > 1) |
913 | info->array.state |= (1 << MD_SB_CLUSTERED); | |
353632d9 NB |
914 | |
915 | info->data_offset = __le64_to_cpu(sb->data_offset); | |
916 | info->component_size = __le64_to_cpu(sb->size); | |
c0c1acd6 | 917 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) |
34a13953 | 918 | info->bitmap_offset = (int32_t)__le32_to_cpu(sb->bitmap_offset); |
82d9eba6 NB |
919 | |
920 | info->disk.major = 0; | |
921 | info->disk.minor = 0; | |
fbf8a0b7 | 922 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 | 923 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
911cead7 | 924 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) |
82d9eba6 NB |
925 | role = 0xfffe; |
926 | else | |
927 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
928 | ||
80bf9135 | 929 | super_offset = __le64_to_cpu(sb->super_offset); |
0ddc35be N |
930 | if (info->array.level <= 0) |
931 | data_size = __le64_to_cpu(sb->data_size); | |
932 | else | |
933 | data_size = __le64_to_cpu(sb->size); | |
80bf9135 N |
934 | if (info->data_offset < super_offset) { |
935 | unsigned long long end; | |
936 | info->space_before = info->data_offset; | |
937 | end = super_offset; | |
cc3130a7 N |
938 | |
939 | if (sb->bblog_offset && sb->bblog_size) { | |
940 | unsigned long long bboffset = super_offset; | |
941 | bboffset += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
942 | if (bboffset < end) | |
943 | end = bboffset; | |
944 | } | |
945 | ||
946 | if (super_offset + info->bitmap_offset < end) | |
947 | end = super_offset + info->bitmap_offset; | |
948 | ||
80bf9135 N |
949 | if (info->data_offset + data_size < end) |
950 | info->space_after = end - data_size - info->data_offset; | |
951 | else | |
952 | info->space_after = 0; | |
953 | } else { | |
cc3130a7 N |
954 | unsigned long long earliest; |
955 | earliest = super_offset + (32+4)*2; /* match kernel */ | |
80bf9135 N |
956 | if (info->bitmap_offset > 0) { |
957 | unsigned long long bmend = info->bitmap_offset; | |
958 | unsigned long long size = __le64_to_cpu(bsb->sync_size); | |
959 | size /= __le32_to_cpu(bsb->chunksize) >> 9; | |
960 | size = (size + 7) >> 3; | |
961 | size += sizeof(bitmap_super_t); | |
962 | size = ROUND_UP(size, 4096); | |
963 | size /= 512; | |
cc3130a7 N |
964 | bmend += size; |
965 | if (bmend > earliest) | |
966 | bmend = earliest; | |
967 | } | |
968 | if (sb->bblog_offset && sb->bblog_size) { | |
969 | unsigned long long bbend = super_offset; | |
970 | bbend += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
971 | bbend += __le32_to_cpu(sb->bblog_size); | |
972 | if (bbend > earliest) | |
973 | earliest = bbend; | |
974 | } | |
975 | if (earliest < info->data_offset) | |
976 | info->space_before = info->data_offset - earliest; | |
977 | else | |
978 | info->space_before = 0; | |
80bf9135 N |
979 | info->space_after = misc->device_size - data_size - info->data_offset; |
980 | } | |
c4b26c64 N |
981 | if (info->space_before == 0 && info->space_after == 0) { |
982 | /* It will look like we don't support data_offset changes, | |
983 | * be we do - it's just that there is no room. | |
984 | * A change that reduced the number of devices should | |
985 | * still be allowed, so set the otherwise useless value of '1' | |
986 | */ | |
987 | info->space_after = 1; | |
988 | } | |
80bf9135 | 989 | |
82d9eba6 NB |
990 | info->disk.raid_disk = -1; |
991 | switch(role) { | |
992 | case 0xFFFF: | |
f22385f9 | 993 | info->disk.state = 0; /* spare: not active, not sync, not faulty */ |
82d9eba6 NB |
994 | break; |
995 | case 0xFFFE: | |
996 | info->disk.state = 1; /* faulty */ | |
997 | break; | |
998 | default: | |
999 | info->disk.state = 6; /* active and in sync */ | |
1000 | info->disk.raid_disk = role; | |
1001 | } | |
cb099724 N |
1002 | if (sb->devflags & WriteMostly1) |
1003 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
82d9eba6 | 1004 | info->events = __le64_to_cpu(sb->events); |
1522c538 | 1005 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 1006 | info->safe_mode_delay = 200; |
82d9eba6 NB |
1007 | |
1008 | memcpy(info->uuid, sb->set_uuid, 16); | |
1009 | ||
31317663 NB |
1010 | strncpy(info->name, sb->set_name, 32); |
1011 | info->name[32] = 0; | |
947fd4dd | 1012 | |
aacb2f81 | 1013 | if ((__le32_to_cpu(sb->feature_map)&MD_FEATURE_REPLACEMENT)) { |
72e7fb13 | 1014 | info->disk.state &= ~(1 << MD_DISK_SYNC); |
aacb2f81 N |
1015 | info->disk.state |= 1 << MD_DISK_REPLACEMENT; |
1016 | } | |
1017 | ||
921d9e16 N |
1018 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
1019 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
1020 | else | |
1021 | info->recovery_start = MaxSector; | |
1022 | ||
353632d9 NB |
1023 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
1024 | info->reshape_active = 1; | |
26bf5587 N |
1025 | if ((sb->feature_map & __le32_to_cpu(MD_FEATURE_NEW_OFFSET)) && |
1026 | sb->new_offset != 0) | |
5e88ab2e | 1027 | info->reshape_active |= RESHAPE_NO_BACKUP; |
353632d9 NB |
1028 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); |
1029 | info->new_level = __le32_to_cpu(sb->new_level); | |
1030 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
1031 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 1032 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
1033 | if (info->delta_disks < 0) |
1034 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
1035 | } else |
1036 | info->reshape_active = 0; | |
1037 | ||
6e75048b AK |
1038 | info->recovery_blocked = info->reshape_active; |
1039 | ||
a5d85af7 N |
1040 | if (map) |
1041 | for (i=0; i<map_disks; i++) | |
1042 | map[i] = 0; | |
f21e18ca | 1043 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 1044 | role = __le16_to_cpu(sb->dev_roles[i]); |
a5d85af7 | 1045 | if (/*role == 0xFFFF || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 1046 | working++; |
a5d85af7 N |
1047 | if (map && role < map_disks) |
1048 | map[role] = 1; | |
1049 | } | |
82d9eba6 NB |
1050 | } |
1051 | ||
1052 | info->array.working_disks = working; | |
1053 | } | |
1054 | ||
00bbdbda N |
1055 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
1056 | { | |
1057 | struct mdinfo *info; | |
1058 | ||
1059 | if (subarray) | |
1060 | return NULL; | |
1061 | ||
503975b9 | 1062 | info = xmalloc(sizeof(*info)); |
00bbdbda N |
1063 | getinfo_super1(st, info, NULL); |
1064 | return info; | |
1065 | } | |
1066 | ||
68c7d6d7 | 1067 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 1068 | char *update, |
e5eac01f NB |
1069 | char *devname, int verbose, |
1070 | int uuid_set, char *homehost) | |
82d9eba6 | 1071 | { |
5a31170d N |
1072 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
1073 | * if any change was made. For others, the return value is | |
1074 | * ignored. | |
c4d831e1 | 1075 | */ |
82d9eba6 | 1076 | int rv = 0; |
3da92f27 | 1077 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 1078 | |
def11332 N |
1079 | if (strcmp(update, "homehost") == 0 && |
1080 | homehost) { | |
1081 | /* Note that 'homehost' is special as it is really | |
1082 | * a "name" update. | |
1083 | */ | |
1084 | char *c; | |
1085 | update = "name"; | |
1086 | c = strchr(sb->set_name, ':'); | |
1087 | if (c) | |
1088 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
1089 | else | |
1090 | strncpy(info->name, sb->set_name, 32); | |
1091 | info->name[32] = 0; | |
1092 | } | |
1093 | ||
67a8c82d NB |
1094 | if (strcmp(update, "force-one")==0) { |
1095 | /* Not enough devices for a working array, | |
1096 | * so bring this one up-to-date | |
1097 | */ | |
c4d831e1 NB |
1098 | if (sb->events != __cpu_to_le64(info->events)) |
1099 | rv = 1; | |
6d3d5804 | 1100 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 1101 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
1102 | /* Degraded array and 'force' requests to |
1103 | * maybe need to mark it 'clean'. | |
1104 | */ | |
82d9eba6 NB |
1105 | switch(__le32_to_cpu(sb->level)) { |
1106 | case 5: case 4: case 6: | |
1107 | /* need to force clean */ | |
b7528a20 | 1108 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 1109 | rv = 1; |
b7528a20 | 1110 | sb->resync_offset = MaxSector; |
82d9eba6 | 1111 | } |
1e2b2765 | 1112 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
1113 | int d = info->disk.number; |
1114 | int want; | |
aacb2f81 | 1115 | if (info->disk.state & (1<<MD_DISK_ACTIVE)) |
a2ce5a1a | 1116 | want = info->disk.raid_disk; |
82d9eba6 NB |
1117 | else |
1118 | want = 0xFFFF; | |
a2ce5a1a N |
1119 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
1120 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
1121 | rv = 1; |
1122 | } | |
d43494fc N |
1123 | if (info->reshape_active && |
1124 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
1125 | info->delta_disks >= 0 && | |
1126 | info->reshape_progress < __le64_to_cpu(sb->reshape_position)) { | |
1127 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
1128 | rv = 1; | |
1129 | } | |
1130 | if (info->reshape_active && | |
1131 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
1132 | info->delta_disks < 0 && | |
1133 | info->reshape_progress > __le64_to_cpu(sb->reshape_position)) { | |
1134 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
1135 | rv = 1; | |
1136 | } | |
1e2b2765 | 1137 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 1138 | unsigned int i; |
1c6cb603 | 1139 | int rfd, fd; |
f21e18ca | 1140 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f NB |
1141 | |
1142 | for (i=0 ; i < max ; i++) | |
1143 | if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe) | |
1144 | break; | |
1145 | sb->dev_number = __cpu_to_le32(i); | |
1146 | info->disk.number = i; | |
1147 | if (max >= __le32_to_cpu(sb->max_dev)) | |
1148 | sb->max_dev = __cpu_to_le32(max+1); | |
1149 | ||
1150 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
1151 | read(rfd, sb->device_uuid, 16) != 16) { | |
caa0f6c6 N |
1152 | __u32 r[4] = {random(), random(), random(), random()}; |
1153 | memcpy(sb->device_uuid, r, 16); | |
f752781f | 1154 | } |
7cbeb80e N |
1155 | if (rfd >= 0) |
1156 | close(rfd); | |
f752781f NB |
1157 | |
1158 | sb->dev_roles[i] = | |
1159 | __cpu_to_le16(info->disk.raid_disk); | |
1c6cb603 N |
1160 | |
1161 | fd = open(devname, O_RDONLY); | |
1162 | if (fd >= 0) { | |
1163 | unsigned long long ds; | |
1164 | get_dev_size(fd, devname, &ds); | |
1165 | close(fd); | |
1166 | ds >>= 9; | |
1167 | if (__le64_to_cpu(sb->super_offset) < | |
1168 | __le64_to_cpu(sb->data_offset)) { | |
1169 | sb->data_size = __cpu_to_le64( | |
1170 | ds - __le64_to_cpu(sb->data_offset)); | |
1171 | } else { | |
1172 | ds -= 8*2; | |
1173 | ds &= ~(unsigned long long)(4*2-1); | |
1174 | sb->super_offset = __cpu_to_le64(ds); | |
1175 | sb->data_size = __cpu_to_le64( | |
1176 | ds - __le64_to_cpu(sb->data_offset)); | |
1177 | } | |
1178 | } | |
1e2b2765 | 1179 | } else if (strcmp(update, "linear-grow-update") == 0) { |
82d9eba6 | 1180 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
1181 | sb->dev_roles[info->disk.number] = |
1182 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 1183 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 1184 | /* make sure resync happens */ |
434b7755 | 1185 | sb->resync_offset = 0ULL; |
1e2b2765 | 1186 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 1187 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 1188 | |
14263cf1 NB |
1189 | if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) { |
1190 | struct bitmap_super_s *bm; | |
911cead7 | 1191 | bm = (struct bitmap_super_s*)(st->sb+MAX_SB_SIZE); |
bf4fb153 | 1192 | memcpy(bm->uuid, sb->set_uuid, 16); |
14263cf1 | 1193 | } |
5a31170d N |
1194 | } else if (strcmp(update, "no-bitmap") == 0) { |
1195 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
688e99a7 N |
1196 | } else if (strcmp(update, "bbl") == 0) { |
1197 | /* only possible if there is room after the bitmap, or if | |
1198 | * there is no bitmap | |
1199 | */ | |
1200 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1201 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
d6e4b44f | 1202 | long bitmap_offset = (long)(int32_t)__le32_to_cpu(sb->bitmap_offset); |
688e99a7 N |
1203 | long bm_sectors = 0; |
1204 | long space; | |
1205 | ||
5a23a06e | 1206 | #ifndef MDASSEMBLE |
688e99a7 N |
1207 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1208 | struct bitmap_super_s *bsb; | |
1209 | bsb = (struct bitmap_super_s *)(((char*)sb)+MAX_SB_SIZE); | |
1210 | bm_sectors = bitmap_sectors(bsb); | |
1211 | } | |
5a23a06e | 1212 | #endif |
688e99a7 | 1213 | if (sb_offset < data_offset) { |
f79bbf4f | 1214 | /* 1.1 or 1.2. Put bbl after bitmap leaving at least 32K |
688e99a7 N |
1215 | */ |
1216 | long bb_offset; | |
f79bbf4f | 1217 | bb_offset = sb_offset + 8; |
688e99a7 | 1218 | if (bm_sectors && bitmap_offset > 0) |
f79bbf4f N |
1219 | bb_offset = bitmap_offset + bm_sectors; |
1220 | while (bb_offset < (long)sb_offset + 8 + 32*2 | |
1221 | && bb_offset + 8+8 <= (long)data_offset) | |
1222 | /* too close to bitmap, and room to grow */ | |
1223 | bb_offset += 8; | |
1224 | if (bb_offset + 8 <= (long)data_offset) { | |
688e99a7 N |
1225 | sb->bblog_size = __cpu_to_le16(8); |
1226 | sb->bblog_offset = __cpu_to_le32(bb_offset); | |
1227 | } | |
1228 | } else { | |
1229 | /* 1.0 - Put bbl just before super block */ | |
1230 | if (bm_sectors && bitmap_offset < 0) | |
1231 | space = -bitmap_offset - bm_sectors; | |
1232 | else | |
1233 | space = sb_offset - data_offset - | |
1234 | __le64_to_cpu(sb->data_size); | |
1235 | if (space >= 8) { | |
1236 | sb->bblog_size = __cpu_to_le16(8); | |
1237 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1238 | } | |
1239 | } | |
1240 | } else if (strcmp(update, "no-bbl") == 0) { | |
1241 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
1242 | pr_err("Cannot remove active bbl from %s\n",devname); | |
1243 | else { | |
1244 | sb->bblog_size = 0; | |
1245 | sb->bblog_shift = 0; | |
1246 | sb->bblog_offset = 0; | |
1247 | } | |
1e2b2765 | 1248 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
1249 | if (info->name[0] == 0) |
1250 | sprintf(info->name, "%d", info->array.md_minor); | |
1251 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
1252 | if (homehost && | |
1253 | strchr(info->name, ':') == NULL && | |
1254 | strlen(homehost)+1+strlen(info->name) < 32) { | |
1255 | strcpy(sb->set_name, homehost); | |
1256 | strcat(sb->set_name, ":"); | |
1257 | strcat(sb->set_name, info->name); | |
1258 | } else | |
1259 | strcpy(sb->set_name, info->name); | |
1e2b2765 | 1260 | } else if (strcmp(update, "devicesize") == 0 && |
bee8ec56 NB |
1261 | __le64_to_cpu(sb->super_offset) < |
1262 | __le64_to_cpu(sb->data_offset)) { | |
1263 | /* set data_size to device size less data_offset */ | |
1264 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
911cead7 | 1265 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); |
bee8ec56 NB |
1266 | sb->data_size = __cpu_to_le64( |
1267 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
199f1a1f N |
1268 | } else if (strcmp(update, "revert-reshape") == 0) { |
1269 | rv = -2; | |
1270 | if (!(sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE))) | |
1271 | pr_err("No active reshape to revert on %s\n", | |
1272 | devname); | |
1273 | else { | |
199f1a1f | 1274 | __u32 temp; |
a2836f12 N |
1275 | unsigned long long reshape_sectors; |
1276 | long reshape_chunk; | |
1277 | rv = 0; | |
1278 | /* reshape_position is a little messy. | |
1279 | * Its value must be a multiple of the larger | |
1280 | * chunk size, and of the "after" data disks. | |
1281 | * So when reverting we need to change it to | |
1282 | * be a multiple of the new "after" data disks, | |
1283 | * which is the old "before". | |
1284 | * If it isn't already a multiple of 'before', | |
1285 | * the only thing we could do would be | |
1286 | * copy some block around on the disks, which | |
1287 | * is easy to get wrong. | |
1288 | * So we reject a revert-reshape unless the | |
1289 | * alignment is good. | |
1290 | */ | |
efb3994e N |
1291 | if (__le32_to_cpu(sb->level) >= 4 && |
1292 | __le32_to_cpu(sb->level) <= 6) { | |
1293 | reshape_sectors = __le64_to_cpu(sb->reshape_position); | |
1294 | reshape_chunk = __le32_to_cpu(sb->new_chunk); | |
1295 | reshape_chunk *= __le32_to_cpu(sb->raid_disks) - __le32_to_cpu(sb->delta_disks) - | |
1296 | (__le32_to_cpu(sb->level)==6 ? 2 : 1); | |
1297 | if (reshape_sectors % reshape_chunk) { | |
1298 | pr_err("Reshape position is not suitably aligned.\n"); | |
2bf62891 | 1299 | pr_err("Try normal assembly and stop again\n"); |
efb3994e N |
1300 | return -2; |
1301 | } | |
a2836f12 N |
1302 | } |
1303 | sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
199f1a1f N |
1304 | __le32_to_cpu(sb->delta_disks)); |
1305 | if (sb->delta_disks == 0) | |
1306 | sb->feature_map ^= __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS); | |
1307 | else | |
1308 | sb->delta_disks = __cpu_to_le32(-__le32_to_cpu(sb->delta_disks)); | |
1309 | ||
1310 | temp = sb->new_layout; | |
1311 | sb->new_layout = sb->layout; | |
1312 | sb->layout = temp; | |
1313 | ||
1314 | temp = sb->new_chunk; | |
1315 | sb->new_chunk = sb->chunksize; | |
1316 | sb->chunksize = temp; | |
1317 | ||
1318 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_NEW_OFFSET)) { | |
419e0182 N |
1319 | long offset_delta = (int32_t)__le32_to_cpu(sb->new_offset); |
1320 | sb->data_offset = __cpu_to_le64(__le64_to_cpu(sb->data_offset) + offset_delta); | |
1321 | sb->new_offset = __cpu_to_le32(-offset_delta); | |
1322 | sb->data_size = __cpu_to_le64(__le64_to_cpu(sb->data_size) - offset_delta); | |
199f1a1f N |
1323 | } |
1324 | } | |
1e2b2765 | 1325 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 1326 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
16715c01 DL |
1327 | else if (strcmp(update, "writemostly")==0) |
1328 | sb->devflags |= WriteMostly1; | |
1329 | else if (strcmp(update, "readwrite")==0) | |
1330 | sb->devflags &= ~WriteMostly1; | |
1e2b2765 N |
1331 | else |
1332 | rv = -1; | |
82d9eba6 NB |
1333 | |
1334 | sb->sb_csum = calc_sb_1_csum(sb); | |
1335 | return rv; | |
1336 | } | |
1337 | ||
3da92f27 | 1338 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
83cd1e97 N |
1339 | unsigned long long size, char *name, char *homehost, |
1340 | int *uuid, unsigned long long data_offset) | |
82d9eba6 | 1341 | { |
6416d527 | 1342 | struct mdp_superblock_1 *sb; |
82d9eba6 | 1343 | int spares; |
34163fc7 | 1344 | int rfd; |
05697ec1 | 1345 | char defname[10]; |
911cead7 | 1346 | int sbsize; |
6416d527 | 1347 | |
3c0bcd46 | 1348 | if (posix_memalign((void**)&sb, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 1349 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
1350 | return 0; |
1351 | } | |
1afa9308 | 1352 | memset(sb, 0, SUPER1_SIZE); |
82d9eba6 | 1353 | |
64557c33 | 1354 | st->sb = sb; |
ba7eb04f | 1355 | if (info == NULL) { |
82d9eba6 NB |
1356 | /* zeroing superblock */ |
1357 | return 0; | |
05697ec1 | 1358 | } |
82d9eba6 NB |
1359 | |
1360 | spares = info->working_disks - info->active_disks; | |
911cead7 | 1361 | if (info->raid_disks + spares > MAX_DEVS) { |
e7b84f9d | 1362 | pr_err("too many devices requested: %d+%d > %d\n", |
911cead7 | 1363 | info->raid_disks , spares, MAX_DEVS); |
82d9eba6 NB |
1364 | return 0; |
1365 | } | |
1366 | ||
82d9eba6 NB |
1367 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
1368 | sb->major_version = __cpu_to_le32(1); | |
1369 | sb->feature_map = 0; | |
1370 | sb->pad0 = 0; | |
34163fc7 | 1371 | |
350f29f9 NB |
1372 | if (uuid) |
1373 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
1374 | else { | |
3d3dd91e NB |
1375 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
1376 | read(rfd, sb->set_uuid, 16) != 16) { | |
caa0f6c6 N |
1377 | __u32 r[4] = {random(), random(), random(), random()}; |
1378 | memcpy(sb->set_uuid, r, 16); | |
3d3dd91e NB |
1379 | } |
1380 | if (rfd >= 0) close(rfd); | |
34163fc7 | 1381 | } |
82d9eba6 | 1382 | |
05697ec1 NB |
1383 | if (name == NULL || *name == 0) { |
1384 | sprintf(defname, "%d", info->md_minor); | |
1385 | name = defname; | |
1386 | } | |
05697ec1 NB |
1387 | if (homehost && |
1388 | strchr(name, ':')== NULL && | |
1389 | strlen(homehost)+1+strlen(name) < 32) { | |
1390 | strcpy(sb->set_name, homehost); | |
1391 | strcat(sb->set_name, ":"); | |
1392 | strcat(sb->set_name, name); | |
1393 | } else | |
1394 | strcpy(sb->set_name, name); | |
82d9eba6 NB |
1395 | |
1396 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
1397 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 1398 | sb->layout = __cpu_to_le32(info->layout); |
5dd497ee | 1399 | sb->size = __cpu_to_le64(size*2ULL); |
82d9eba6 NB |
1400 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
1401 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
1402 | ||
83cd1e97 | 1403 | sb->data_offset = __cpu_to_le64(data_offset); |
82d9eba6 NB |
1404 | sb->data_size = __cpu_to_le64(0); |
1405 | sb->super_offset = __cpu_to_le64(0); | |
1406 | sb->recovery_offset = __cpu_to_le64(0); | |
1407 | ||
1408 | sb->utime = sb->ctime; | |
1409 | sb->events = __cpu_to_le64(1); | |
34321279 | 1410 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 1411 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
1412 | else |
1413 | sb->resync_offset = 0; | |
911cead7 N |
1414 | sbsize = sizeof(struct mdp_superblock_1) + 2 * (info->raid_disks + spares); |
1415 | sbsize = ROUND_UP(sbsize, 512); | |
1416 | sb->max_dev = __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
82d9eba6 | 1417 | |
911cead7 | 1418 | memset(sb->dev_roles, 0xff, MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); |
82d9eba6 | 1419 | |
82d9eba6 NB |
1420 | return 1; |
1421 | } | |
1422 | ||
111d01fc NB |
1423 | struct devinfo { |
1424 | int fd; | |
1425 | char *devname; | |
72ca9bcf | 1426 | long long data_offset; |
111d01fc NB |
1427 | mdu_disk_info_t disk; |
1428 | struct devinfo *next; | |
1429 | }; | |
0e600426 | 1430 | #ifndef MDASSEMBLE |
82d9eba6 | 1431 | /* Add a device to the superblock being created */ |
f20c3968 | 1432 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
72ca9bcf | 1433 | int fd, char *devname, unsigned long long data_offset) |
82d9eba6 | 1434 | { |
3da92f27 | 1435 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 1436 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc NB |
1437 | struct devinfo *di, **dip; |
1438 | ||
dfd4d8ee | 1439 | if ((dk->state & 6) == 6) /* active, sync */ |
82d9eba6 | 1440 | *rp = __cpu_to_le16(dk->raid_disk); |
412ca2e5 | 1441 | else if ((dk->state & ~2) == 0) /* active or idle -> spare */ |
82d9eba6 | 1442 | *rp = 0xffff; |
34163fc7 | 1443 | else |
82d9eba6 | 1444 | *rp = 0xfffe; |
111d01fc | 1445 | |
f21e18ca | 1446 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
911cead7 | 1447 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) |
9df04a4f | 1448 | sb->max_dev = __cpu_to_le32(dk->number+1); |
8844e291 | 1449 | |
d2ca6449 | 1450 | sb->dev_number = __cpu_to_le32(dk->number); |
16715c01 | 1451 | sb->devflags = 0; /* don't copy another disks flags */ |
d2ca6449 NB |
1452 | sb->sb_csum = calc_sb_1_csum(sb); |
1453 | ||
111d01fc NB |
1454 | dip = (struct devinfo **)&st->info; |
1455 | while (*dip) | |
1456 | dip = &(*dip)->next; | |
503975b9 | 1457 | di = xmalloc(sizeof(struct devinfo)); |
111d01fc NB |
1458 | di->fd = fd; |
1459 | di->devname = devname; | |
1460 | di->disk = *dk; | |
72ca9bcf | 1461 | di->data_offset = data_offset; |
111d01fc NB |
1462 | di->next = NULL; |
1463 | *dip = di; | |
f20c3968 DW |
1464 | |
1465 | return 0; | |
82d9eba6 | 1466 | } |
0e600426 | 1467 | #endif |
82d9eba6 | 1468 | |
3da92f27 | 1469 | static void locate_bitmap1(struct supertype *st, int fd); |
14263cf1 | 1470 | |
3da92f27 | 1471 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 1472 | { |
3da92f27 | 1473 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 1474 | unsigned long long sb_offset; |
308340aa | 1475 | struct align_fd afd; |
82d9eba6 | 1476 | int sbsize; |
5dd497ee | 1477 | unsigned long long dsize; |
96395475 | 1478 | |
beae1dfe NB |
1479 | if (!get_dev_size(fd, NULL, &dsize)) |
1480 | return 1; | |
1481 | ||
1482 | dsize >>= 9; | |
96395475 | 1483 | |
5dd497ee | 1484 | if (dsize < 24) |
96395475 NB |
1485 | return 2; |
1486 | ||
308340aa JS |
1487 | init_afd(&afd, fd); |
1488 | ||
96395475 NB |
1489 | /* |
1490 | * Calculate the position of the superblock. | |
1491 | * It is always aligned to a 4K boundary and | |
1492 | * depending on minor_version, it can be: | |
1493 | * 0: At least 8K, but less than 12K, from end of device | |
1494 | * 1: At start of device | |
1495 | * 2: 4K from start of device. | |
1496 | */ | |
1497 | switch(st->minor_version) { | |
1498 | case 0: | |
5dd497ee | 1499 | sb_offset = dsize; |
96395475 NB |
1500 | sb_offset -= 8*2; |
1501 | sb_offset &= ~(4*2-1); | |
1502 | break; | |
1503 | case 1: | |
6fbba4c9 | 1504 | sb_offset = 0; |
96395475 NB |
1505 | break; |
1506 | case 2: | |
1507 | sb_offset = 4*2; | |
1508 | break; | |
1509 | default: | |
1510 | return -EINVAL; | |
1511 | } | |
1512 | ||
6fbba4c9 NB |
1513 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
1514 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 | 1515 | ) { |
e7b84f9d | 1516 | pr_err("internal error - sb_offset is wrong\n"); |
96395475 NB |
1517 | abort(); |
1518 | } | |
82d9eba6 | 1519 | |
6fbba4c9 | 1520 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
1521 | return 3; |
1522 | ||
0a2f1894 | 1523 | sbsize = ROUND_UP(sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev), 512); |
82d9eba6 | 1524 | |
308340aa | 1525 | if (awrite(&afd, sb, sbsize) != sbsize) |
82d9eba6 NB |
1526 | return 4; |
1527 | ||
14263cf1 NB |
1528 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1529 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
911cead7 | 1530 | (((char*)sb)+MAX_SB_SIZE); |
14263cf1 | 1531 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
3da92f27 | 1532 | locate_bitmap1(st, fd); |
308340aa JS |
1533 | if (awrite(&afd, bm, sizeof(*bm)) != sizeof(*bm)) |
1534 | return 5; | |
14263cf1 NB |
1535 | } |
1536 | } | |
570c0542 | 1537 | fsync(fd); |
82d9eba6 NB |
1538 | return 0; |
1539 | } | |
1540 | ||
3da92f27 | 1541 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1542 | |
2fb749d1 NB |
1543 | static unsigned long choose_bm_space(unsigned long devsize) |
1544 | { | |
1545 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1546 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1547 | * NOTE: result must be multiple of 4K else bad things happen |
1548 | * on 4K-sector devices. | |
2fb749d1 | 1549 | */ |
69646c14 | 1550 | if (devsize < 64*2) return 0; |
2fb749d1 NB |
1551 | if (devsize - 64*2 >= 200*1024*1024*2) |
1552 | return 128*2; | |
1553 | if (devsize - 4*2 > 8*1024*1024*2) | |
1554 | return 64*2; | |
1555 | return 4*2; | |
1556 | } | |
1557 | ||
e8090005 N |
1558 | static void free_super1(struct supertype *st); |
1559 | ||
111d01fc NB |
1560 | #ifndef MDASSEMBLE |
1561 | static int write_init_super1(struct supertype *st) | |
82d9eba6 | 1562 | { |
3da92f27 | 1563 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1564 | struct supertype *refst; |
dfe47e00 | 1565 | int rfd; |
111d01fc | 1566 | int rv = 0; |
f21e18ca | 1567 | unsigned long long bm_space; |
111d01fc | 1568 | struct devinfo *di; |
8fac0577 | 1569 | unsigned long long dsize, array_size; |
23bf42cc | 1570 | unsigned long long sb_offset; |
83cd1e97 | 1571 | unsigned long long data_offset; |
82d9eba6 | 1572 | |
4687f160 | 1573 | for (di = st->info; di; di = di->next) { |
f4dc5e9b | 1574 | if (di->disk.state & (1 << MD_DISK_FAULTY)) |
111d01fc | 1575 | continue; |
a0c8a17f NB |
1576 | if (di->fd < 0) |
1577 | continue; | |
82d9eba6 | 1578 | |
ba728be7 | 1579 | while (Kill(di->devname, NULL, 0, -1, 1) == 0) |
9277cc77 | 1580 | ; |
82d9eba6 | 1581 | |
111d01fc NB |
1582 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1583 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
adbb382b | 1584 | sb->devflags |= WriteMostly1; |
9a88e7b6 | 1585 | else |
adbb382b | 1586 | sb->devflags &= ~WriteMostly1; |
892debc8 | 1587 | |
111d01fc NB |
1588 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
1589 | read(rfd, sb->device_uuid, 16) != 16) { | |
83208785 N |
1590 | __u32 r[4] = {random(), random(), random(), random()}; |
1591 | memcpy(sb->device_uuid, r, 16); | |
111d01fc | 1592 | } |
83208785 N |
1593 | if (rfd >= 0) |
1594 | close(rfd); | |
1595 | ||
111d01fc NB |
1596 | sb->events = 0; |
1597 | ||
e8090005 | 1598 | refst = dup_super(st); |
1011e834 | 1599 | if (load_super1(refst, di->fd, NULL)==0) { |
e8090005 | 1600 | struct mdp_superblock_1 *refsb = refst->sb; |
111d01fc NB |
1601 | |
1602 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1603 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1604 | /* same array, so preserve events and | |
1605 | * dev_number */ | |
1606 | sb->events = refsb->events; | |
1607 | /* bugs in 2.6.17 and earlier mean the | |
1608 | * dev_number chosen in Manage must be preserved | |
1609 | */ | |
1610 | if (get_linux_version() >= 2006018) | |
1611 | sb->dev_number = refsb->dev_number; | |
1612 | } | |
e8090005 | 1613 | free_super1(refst); |
892debc8 | 1614 | } |
e8090005 | 1615 | free(refst); |
34163fc7 | 1616 | |
40114213 JS |
1617 | if (!get_dev_size(di->fd, NULL, &dsize)) { |
1618 | rv = 1; | |
1619 | goto error_out; | |
1620 | } | |
111d01fc | 1621 | dsize >>= 9; |
82d9eba6 | 1622 | |
111d01fc NB |
1623 | if (dsize < 24) { |
1624 | close(di->fd); | |
40114213 JS |
1625 | rv = 2; |
1626 | goto error_out; | |
111d01fc | 1627 | } |
82d9eba6 | 1628 | |
111d01fc NB |
1629 | /* |
1630 | * Calculate the position of the superblock. | |
1631 | * It is always aligned to a 4K boundary and | |
1632 | * depending on minor_version, it can be: | |
1633 | * 0: At least 8K, but less than 12K, from end of device | |
1634 | * 1: At start of device | |
1635 | * 2: 4K from start of device. | |
23bf42cc | 1636 | * data_offset has already been set. |
111d01fc NB |
1637 | */ |
1638 | array_size = __le64_to_cpu(sb->size); | |
bf95d0f3 N |
1639 | /* work out how much space we left for a bitmap, |
1640 | * Add 8 sectors for bad block log */ | |
1641 | bm_space = choose_bm_space(array_size) + 8; | |
111d01fc | 1642 | |
72ca9bcf | 1643 | data_offset = di->data_offset; |
23bf42cc N |
1644 | if (data_offset == INVALID_SECTORS) |
1645 | data_offset = st->data_offset; | |
111d01fc NB |
1646 | switch(st->minor_version) { |
1647 | case 0: | |
23bf42cc N |
1648 | if (data_offset == INVALID_SECTORS) |
1649 | data_offset = 0; | |
111d01fc NB |
1650 | sb_offset = dsize; |
1651 | sb_offset -= 8*2; | |
1652 | sb_offset &= ~(4*2-1); | |
4c0ea7b0 | 1653 | sb->data_offset = __cpu_to_le64(data_offset); |
111d01fc | 1654 | sb->super_offset = __cpu_to_le64(sb_offset); |
f21e18ca | 1655 | if (sb_offset < array_size + bm_space) |
a380e275 | 1656 | bm_space = sb_offset - array_size; |
111d01fc | 1657 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
bf95d0f3 N |
1658 | if (bm_space >= 8) { |
1659 | sb->bblog_size = __cpu_to_le16(8); | |
1660 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1661 | } | |
111d01fc NB |
1662 | break; |
1663 | case 1: | |
1664 | sb->super_offset = __cpu_to_le64(0); | |
23bf42cc N |
1665 | if (data_offset == INVALID_SECTORS) |
1666 | data_offset = 16; | |
1667 | ||
1668 | sb->data_offset = __cpu_to_le64(data_offset); | |
1669 | sb->data_size = __cpu_to_le64(dsize - data_offset); | |
1670 | if (data_offset >= 8 + 32*2 + 8) { | |
f79bbf4f N |
1671 | sb->bblog_size = __cpu_to_le16(8); |
1672 | sb->bblog_offset = __cpu_to_le32(8 + 32*2); | |
23bf42cc | 1673 | } else if (data_offset >= 16) { |
bf95d0f3 | 1674 | sb->bblog_size = __cpu_to_le16(8); |
23bf42cc | 1675 | sb->bblog_offset = __cpu_to_le32(data_offset-8); |
bf95d0f3 | 1676 | } |
111d01fc NB |
1677 | break; |
1678 | case 2: | |
1679 | sb_offset = 4*2; | |
23bf42cc N |
1680 | sb->super_offset = __cpu_to_le64(sb_offset); |
1681 | if (data_offset == INVALID_SECTORS) | |
1682 | data_offset = 24; | |
1683 | ||
1684 | sb->data_offset = __cpu_to_le64(data_offset); | |
1685 | sb->data_size = __cpu_to_le64(dsize - data_offset); | |
1686 | if (data_offset >= 16 + 32*2 + 8) { | |
f79bbf4f N |
1687 | sb->bblog_size = __cpu_to_le16(8); |
1688 | sb->bblog_offset = __cpu_to_le32(8 + 32*2); | |
23bf42cc | 1689 | } else if (data_offset >= 16+16) { |
bf95d0f3 N |
1690 | sb->bblog_size = __cpu_to_le16(8); |
1691 | /* '8' sectors for the bblog, and another '8' | |
1692 | * because we want offset from superblock, not | |
1693 | * start of device. | |
1694 | */ | |
23bf42cc | 1695 | sb->bblog_offset = __cpu_to_le32(data_offset-8-8); |
bf95d0f3 | 1696 | } |
111d01fc NB |
1697 | break; |
1698 | default: | |
7a862a02 | 1699 | pr_err("Failed to write invalid metadata format 1.%i to %s\n", |
e7b84f9d | 1700 | st->minor_version, di->devname); |
40114213 JS |
1701 | rv = -EINVAL; |
1702 | goto out; | |
111d01fc | 1703 | } |
e2efe9e7 N |
1704 | if (conf_get_create_info()->bblist == 0) { |
1705 | sb->bblog_size = 0; | |
1706 | sb->bblog_offset = 0; | |
1707 | } | |
82d9eba6 | 1708 | |
111d01fc NB |
1709 | sb->sb_csum = calc_sb_1_csum(sb); |
1710 | rv = store_super1(st, di->fd); | |
111d01fc | 1711 | if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1)) |
0aa2f15b | 1712 | rv = st->ss->write_bitmap(st, di->fd, NoUpdate); |
111d01fc NB |
1713 | close(di->fd); |
1714 | di->fd = -1; | |
4687f160 | 1715 | if (rv) |
1716 | goto error_out; | |
111d01fc | 1717 | } |
40114213 JS |
1718 | error_out: |
1719 | if (rv) | |
e7b84f9d N |
1720 | pr_err("Failed to write metadata to %s\n", |
1721 | di->devname); | |
40114213 | 1722 | out: |
82d9eba6 NB |
1723 | return rv; |
1724 | } | |
111d01fc | 1725 | #endif |
82d9eba6 | 1726 | |
64557c33 | 1727 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
1728 | { |
1729 | /* | |
1730 | * return: | |
1731 | * 0 same, or first was empty, and second was copied | |
1732 | * 1 second had wrong number | |
1733 | * 2 wrong uuid | |
1734 | * 3 wrong other info | |
1735 | */ | |
64557c33 NB |
1736 | struct mdp_superblock_1 *first = st->sb; |
1737 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
1738 | |
1739 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
1740 | return 1; | |
1741 | if (second->major_version != __cpu_to_le32(1)) | |
1742 | return 1; | |
1743 | ||
1744 | if (!first) { | |
3c0bcd46 | 1745 | if (posix_memalign((void**)&first, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 1746 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
1747 | return 1; |
1748 | } | |
41226756 | 1749 | memcpy(first, second, SUPER1_SIZE); |
64557c33 | 1750 | st->sb = first; |
82d9eba6 NB |
1751 | return 0; |
1752 | } | |
1753 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
1754 | return 2; | |
1755 | ||
1756 | if (first->ctime != second->ctime || | |
1757 | first->level != second->level || | |
1758 | first->layout != second->layout || | |
1759 | first->size != second->size || | |
1760 | first->chunksize != second->chunksize || | |
1761 | first->raid_disks != second->raid_disks) | |
1762 | return 3; | |
1763 | return 0; | |
1764 | } | |
1765 | ||
3da92f27 | 1766 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 1767 | { |
5dd497ee | 1768 | unsigned long long dsize; |
82d9eba6 NB |
1769 | unsigned long long sb_offset; |
1770 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
1771 | int uuid[4]; |
1772 | struct bitmap_super_s *bsb; | |
bee8ec56 | 1773 | struct misc_dev_info *misc; |
308340aa | 1774 | struct align_fd afd; |
82d9eba6 | 1775 | |
3da92f27 | 1776 | free_super1(st); |
82d9eba6 | 1777 | |
308340aa JS |
1778 | init_afd(&afd, fd); |
1779 | ||
a17a3de3 | 1780 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 1781 | int bestvers = -1; |
23dc1ae8 | 1782 | struct supertype tst; |
570c0542 NB |
1783 | __u64 bestctime = 0; |
1784 | /* guess... choose latest ctime */ | |
ef609477 | 1785 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
1786 | tst.ss = &super1; |
1787 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
1788 | switch(load_super1(&tst, fd, devname)) { |
1789 | case 0: super = tst.sb; | |
570c0542 NB |
1790 | if (bestvers == -1 || |
1791 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 1792 | bestvers = tst.minor_version; |
570c0542 NB |
1793 | bestctime = __le64_to_cpu(super->ctime); |
1794 | } | |
1795 | free(super); | |
3da92f27 | 1796 | tst.sb = NULL; |
570c0542 | 1797 | break; |
23dc1ae8 | 1798 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
1799 | case 2: break; /* bad, try next */ |
1800 | } | |
1801 | } | |
570c0542 NB |
1802 | if (bestvers != -1) { |
1803 | int rv; | |
23dc1ae8 NB |
1804 | tst.minor_version = bestvers; |
1805 | tst.ss = &super1; | |
911cead7 | 1806 | tst.max_devs = MAX_DEVS; |
3da92f27 | 1807 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
1808 | if (rv == 0) |
1809 | *st = tst; | |
570c0542 NB |
1810 | return rv; |
1811 | } | |
82d9eba6 NB |
1812 | return 2; |
1813 | } | |
beae1dfe NB |
1814 | if (!get_dev_size(fd, devname, &dsize)) |
1815 | return 1; | |
1816 | dsize >>= 9; | |
82d9eba6 | 1817 | |
5dd497ee | 1818 | if (dsize < 24) { |
82d9eba6 | 1819 | if (devname) |
e7b84f9d | 1820 | pr_err("%s is too small for md: size is %llu sectors.\n", |
5dd497ee | 1821 | devname, dsize); |
82d9eba6 NB |
1822 | return 1; |
1823 | } | |
1824 | ||
1825 | /* | |
1826 | * Calculate the position of the superblock. | |
1827 | * It is always aligned to a 4K boundary and | |
14263cf1 | 1828 | * depending on minor_version, it can be: |
82d9eba6 NB |
1829 | * 0: At least 8K, but less than 12K, from end of device |
1830 | * 1: At start of device | |
1831 | * 2: 4K from start of device. | |
1832 | */ | |
1833 | switch(st->minor_version) { | |
1834 | case 0: | |
5dd497ee | 1835 | sb_offset = dsize; |
82d9eba6 NB |
1836 | sb_offset -= 8*2; |
1837 | sb_offset &= ~(4*2-1); | |
1838 | break; | |
1839 | case 1: | |
1840 | sb_offset = 0; | |
1841 | break; | |
1842 | case 2: | |
1843 | sb_offset = 4*2; | |
1844 | break; | |
1845 | default: | |
1846 | return -EINVAL; | |
1847 | } | |
1848 | ||
82d9eba6 NB |
1849 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { |
1850 | if (devname) | |
e7b84f9d | 1851 | pr_err("Cannot seek to superblock on %s: %s\n", |
82d9eba6 NB |
1852 | devname, strerror(errno)); |
1853 | return 1; | |
1854 | } | |
1855 | ||
3c0bcd46 | 1856 | if (posix_memalign((void**)&super, 4096, SUPER1_SIZE) != 0) { |
1ade5cc1 | 1857 | pr_err("could not allocate superblock\n"); |
3d2c4fc7 DW |
1858 | return 1; |
1859 | } | |
82d9eba6 | 1860 | |
308340aa | 1861 | if (aread(&afd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { |
82d9eba6 | 1862 | if (devname) |
e7b84f9d | 1863 | pr_err("Cannot read superblock on %s\n", |
82d9eba6 NB |
1864 | devname); |
1865 | free(super); | |
1866 | return 1; | |
1867 | } | |
1868 | ||
1869 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
1870 | if (devname) | |
e7b84f9d | 1871 | pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", |
82d9eba6 NB |
1872 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); |
1873 | free(super); | |
1874 | return 2; | |
1875 | } | |
1876 | ||
1877 | if (__le32_to_cpu(super->major_version) != 1) { | |
1878 | if (devname) | |
e7b84f9d | 1879 | pr_err("Cannot interpret superblock on %s - version is %d\n", |
82d9eba6 NB |
1880 | devname, __le32_to_cpu(super->major_version)); |
1881 | free(super); | |
1882 | return 2; | |
1883 | } | |
1884 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
1885 | if (devname) | |
e7b84f9d | 1886 | pr_err("No superblock found on %s (super_offset is wrong)\n", |
82d9eba6 NB |
1887 | devname); |
1888 | free(super); | |
1889 | return 2; | |
1890 | } | |
64557c33 | 1891 | st->sb = super; |
14263cf1 | 1892 | |
911cead7 | 1893 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
bee8ec56 | 1894 | |
911cead7 | 1895 | misc = (struct misc_dev_info*) (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE); |
bee8ec56 | 1896 | misc->device_size = dsize; |
23bf42cc N |
1897 | if (st->data_offset == INVALID_SECTORS) |
1898 | st->data_offset = __le64_to_cpu(super->data_offset); | |
bee8ec56 | 1899 | |
14263cf1 NB |
1900 | /* Now check on the bitmap superblock */ |
1901 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
1902 | return 0; | |
1903 | /* Read the bitmap superblock and make sure it looks | |
1904 | * valid. If it doesn't clear the bit. An --assemble --force | |
1905 | * should get that written out. | |
1906 | */ | |
3da92f27 | 1907 | locate_bitmap1(st, fd); |
308340aa | 1908 | if (aread(&afd, bsb, 512) != 512) |
14263cf1 NB |
1909 | goto no_bitmap; |
1910 | ||
3da92f27 | 1911 | uuid_from_super1(st, uuid); |
14263cf1 NB |
1912 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
1913 | memcmp(bsb->uuid, uuid, 16) != 0) | |
1914 | goto no_bitmap; | |
1915 | return 0; | |
1916 | ||
1917 | no_bitmap: | |
c0c1acd6 N |
1918 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) |
1919 | & ~MD_FEATURE_BITMAP_OFFSET); | |
82d9eba6 NB |
1920 | return 0; |
1921 | } | |
1922 | ||
82d9eba6 NB |
1923 | static struct supertype *match_metadata_desc1(char *arg) |
1924 | { | |
503975b9 | 1925 | struct supertype *st = xcalloc(1, sizeof(*st)); |
82d9eba6 | 1926 | |
4dd2df09 | 1927 | st->container_devnm[0] = 0; |
82d9eba6 | 1928 | st->ss = &super1; |
911cead7 | 1929 | st->max_devs = MAX_DEVS; |
64557c33 | 1930 | st->sb = NULL; |
23bf42cc | 1931 | st->data_offset = INVALID_SECTORS; |
9b2a22d3 N |
1932 | /* leading zeros can be safely ignored. --detail generates them. */ |
1933 | while (*arg == '0') | |
1934 | arg++; | |
1935 | if (strcmp(arg, "1.0") == 0 || | |
1936 | strcmp(arg, "1.00") == 0) { | |
82d9eba6 NB |
1937 | st->minor_version = 0; |
1938 | return st; | |
1939 | } | |
9b2a22d3 | 1940 | if (strcmp(arg, "1.1") == 0 || |
50827504 | 1941 | strcmp(arg, "1.01") == 0 |
7d5c3964 | 1942 | ) { |
82d9eba6 NB |
1943 | st->minor_version = 1; |
1944 | return st; | |
1945 | } | |
9b2a22d3 | 1946 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 1947 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 1948 | strcmp(arg, "default") == 0 || |
26f467a9 | 1949 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 1950 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
1951 | st->minor_version = 2; |
1952 | return st; | |
1953 | } | |
a17a3de3 | 1954 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 1955 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
1956 | st->minor_version = -1; |
1957 | return st; | |
1958 | } | |
82d9eba6 NB |
1959 | |
1960 | free(st); | |
1961 | return NULL; | |
1962 | } | |
1963 | ||
34163fc7 NB |
1964 | /* find available size on device with this devsize, using |
1965 | * superblock type st, and reserving 'reserve' sectors for | |
1966 | * a possible bitmap | |
1967 | */ | |
641da745 N |
1968 | static __u64 avail_size1(struct supertype *st, __u64 devsize, |
1969 | unsigned long long data_offset) | |
82d9eba6 | 1970 | { |
2a528478 | 1971 | struct mdp_superblock_1 *super = st->sb; |
387fcd59 | 1972 | int bmspace = 0; |
23bf42cc | 1973 | int bbspace = 0; |
82d9eba6 NB |
1974 | if (devsize < 24) |
1975 | return 0; | |
1976 | ||
2a528478 | 1977 | #ifndef MDASSEMBLE |
641da745 | 1978 | if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) { |
2a528478 N |
1979 | /* hot-add. allow for actual size of bitmap */ |
1980 | struct bitmap_super_s *bsb; | |
911cead7 | 1981 | bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE); |
387fcd59 | 1982 | bmspace = bitmap_sectors(bsb); |
2a528478 N |
1983 | } |
1984 | #endif | |
88af981f | 1985 | /* Allow space for bad block log */ |
641da745 | 1986 | if (super->bblog_size) |
23bf42cc | 1987 | bbspace = __le16_to_cpu(super->bblog_size); |
21e92547 | 1988 | |
a380e275 N |
1989 | if (st->minor_version < 0) |
1990 | /* not specified, so time to set default */ | |
1991 | st->minor_version = 2; | |
387fcd59 | 1992 | |
23bf42cc N |
1993 | if (data_offset == INVALID_SECTORS) |
1994 | data_offset = st->data_offset; | |
1995 | ||
387fcd59 N |
1996 | if (data_offset != INVALID_SECTORS) |
1997 | switch(st->minor_version) { | |
1998 | case 0: | |
23bf42cc | 1999 | return devsize - data_offset - 8*2 - bbspace; |
387fcd59 N |
2000 | case 1: |
2001 | case 2: | |
2002 | return devsize - data_offset; | |
2003 | default: | |
2004 | return 0; | |
2005 | } | |
2006 | ||
2007 | devsize -= bmspace; | |
2008 | ||
34163fc7 NB |
2009 | switch(st->minor_version) { |
2010 | case 0: | |
1bf4e2d9 | 2011 | /* at end */ |
23bf42cc | 2012 | return ((devsize - 8*2 - bbspace ) & ~(4*2-1)); |
34163fc7 | 2013 | case 1: |
1bf4e2d9 | 2014 | /* at start, 4K for superblock and possible bitmap */ |
23bf42cc | 2015 | return devsize - 4*2 - bbspace; |
34163fc7 | 2016 | case 2: |
1bf4e2d9 | 2017 | /* 4k from start, 4K for superblock and possible bitmap */ |
23bf42cc | 2018 | return devsize - (4+4)*2 - bbspace; |
34163fc7 NB |
2019 | } |
2020 | return 0; | |
2021 | } | |
2022 | ||
1bf4e2d9 | 2023 | static int |
3da92f27 | 2024 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
2025 | int *chunkp, int delay, int write_behind, |
2026 | unsigned long long size, | |
21e92547 | 2027 | int may_change, int major) |
34163fc7 NB |
2028 | { |
2029 | /* | |
c0c1acd6 N |
2030 | * If not may_change, then this is a 'Grow' without sysfs support for |
2031 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
2032 | * If may_change, then this is create or a Grow with sysfs syupport, | |
2033 | * and we can put the bitmap wherever we like. | |
34163fc7 | 2034 | * |
f9c25f1d | 2035 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
2036 | */ |
2037 | ||
1bf4e2d9 | 2038 | unsigned long long bits; |
199171a2 | 2039 | unsigned long long max_bits; |
34163fc7 | 2040 | unsigned long long min_chunk; |
199171a2 | 2041 | long offset; |
88af981f | 2042 | long bbl_offset, bbl_size; |
f21e18ca | 2043 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 2044 | int room = 0; |
c0c1acd6 | 2045 | int creating = 0; |
3da92f27 | 2046 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2047 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE); |
3b7e9d0c | 2048 | int uuid[4]; |
34163fc7 | 2049 | |
c0c1acd6 N |
2050 | if (__le64_to_cpu(sb->data_size) == 0) |
2051 | /* Must be creating the array, else data_size would be non-zero */ | |
2052 | creating = 1; | |
199171a2 NB |
2053 | switch(st->minor_version) { |
2054 | case 0: | |
a31128d2 N |
2055 | /* either 3K after the superblock (when hot-add), |
2056 | * or some amount of space before. | |
199171a2 | 2057 | */ |
c0c1acd6 | 2058 | if (creating) { |
199171a2 NB |
2059 | /* We are creating array, so we *know* how much room has |
2060 | * been left. | |
2061 | */ | |
2062 | offset = 0; | |
88af981f | 2063 | bbl_size = 8; |
6ac17e73 | 2064 | room = choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; |
199171a2 NB |
2065 | } else { |
2066 | room = __le64_to_cpu(sb->super_offset) | |
2067 | - __le64_to_cpu(sb->data_offset) | |
2068 | - __le64_to_cpu(sb->data_size); | |
88af981f N |
2069 | bbl_size = __le16_to_cpu(sb->bblog_size); |
2070 | if (bbl_size < 8) | |
2071 | bbl_size = 8; | |
2072 | bbl_offset = (__s32)__le32_to_cpu(sb->bblog_offset); | |
2073 | if (bbl_size < -bbl_offset) | |
2074 | bbl_size = -bbl_offset; | |
c0c1acd6 N |
2075 | |
2076 | if (!may_change || (room < 3*2 && | |
7716570e | 2077 | __le32_to_cpu(sb->max_dev) <= 384)) { |
199171a2 NB |
2078 | room = 3*2; |
2079 | offset = 1*2; | |
88af981f | 2080 | bbl_size = 0; |
199171a2 NB |
2081 | } else { |
2082 | offset = 0; /* means movable offset */ | |
2083 | } | |
2084 | } | |
2085 | break; | |
2086 | case 1: | |
2087 | case 2: /* between superblock and data */ | |
c0c1acd6 | 2088 | if (creating) { |
199171a2 | 2089 | offset = 4*2; |
88af981f | 2090 | bbl_size = 8; |
6ac17e73 | 2091 | room = choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; |
199171a2 NB |
2092 | } else { |
2093 | room = __le64_to_cpu(sb->data_offset) | |
2094 | - __le64_to_cpu(sb->super_offset); | |
88af981f N |
2095 | bbl_size = __le16_to_cpu(sb->bblog_size); |
2096 | if (bbl_size) | |
2097 | room = __le32_to_cpu(sb->bblog_offset) + bbl_size; | |
2098 | else | |
2099 | bbl_size = 8; | |
2100 | ||
c0c1acd6 N |
2101 | if (!may_change) { |
2102 | room -= 2; /* Leave 1K for superblock */ | |
199171a2 | 2103 | offset = 2; |
88af981f | 2104 | bbl_size = 0; |
199171a2 | 2105 | } else { |
c0c1acd6 | 2106 | room -= 4*2; /* leave 4K for superblock */ |
199171a2 NB |
2107 | offset = 4*2; |
2108 | } | |
2109 | } | |
2110 | break; | |
ae491d1e NB |
2111 | default: |
2112 | return 0; | |
199171a2 | 2113 | } |
1bf4e2d9 | 2114 | |
88af981f | 2115 | room -= bbl_size; |
199171a2 NB |
2116 | if (chunk == UnSet && room > 128*2) |
2117 | /* Limit to 128K of bitmap when chunk size not requested */ | |
2118 | room = 128*2; | |
1bf4e2d9 | 2119 | |
268cccac N |
2120 | if (room <= 1) |
2121 | /* No room for a bitmap */ | |
2122 | return 0; | |
2123 | ||
199171a2 | 2124 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
2125 | |
2126 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 2127 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
2128 | while (bits > max_bits) { |
2129 | min_chunk *= 2; | |
2130 | bits = (bits+1)/2; | |
2131 | } | |
b8ab2a50 N |
2132 | if (chunk == UnSet) { |
2133 | /* For practical purpose, 64Meg is a good | |
2134 | * default chunk size for internal bitmaps. | |
2135 | */ | |
34163fc7 | 2136 | chunk = min_chunk; |
b8ab2a50 N |
2137 | if (chunk < 64*1024*1024) |
2138 | chunk = 64*1024*1024; | |
2139 | } else if (chunk < min_chunk) | |
34163fc7 | 2140 | return 0; /* chunk size too small */ |
21e92547 NB |
2141 | if (chunk == 0) /* rounding problem */ |
2142 | return 0; | |
34163fc7 | 2143 | |
199171a2 | 2144 | if (offset == 0) { |
a31128d2 N |
2145 | /* start bitmap on a 4K boundary with enough space for |
2146 | * the bitmap | |
2147 | */ | |
199171a2 | 2148 | bits = (size*512) / chunk + 1; |
a31128d2 N |
2149 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
2150 | room *= 8; /* convert 4K blocks to sectors */ | |
88af981f | 2151 | offset = -room - bbl_size; |
199171a2 NB |
2152 | } |
2153 | ||
34a13953 | 2154 | sb->bitmap_offset = (int32_t)__cpu_to_le32(offset); |
34163fc7 | 2155 | |
c0c1acd6 N |
2156 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) |
2157 | | MD_FEATURE_BITMAP_OFFSET); | |
29e766a5 | 2158 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 2159 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 2160 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
2161 | uuid_from_super1(st, uuid); |
2162 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
2163 | bms->chunksize = __cpu_to_le32(chunk); |
2164 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 2165 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 | 2166 | bms->write_behind = __cpu_to_le32(write_behind); |
529e2aa5 | 2167 | bms->nodes = __cpu_to_le32(st->nodes); |
6d9c7c25 GR |
2168 | if (st->nodes) |
2169 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | |
2170 | | MD_FEATURE_BITMAP_VERSIONED); | |
7716570e GJ |
2171 | if (st->cluster_name) |
2172 | strncpy((char *)bms->cluster_name, | |
2173 | st->cluster_name, strlen(st->cluster_name)); | |
34163fc7 | 2174 | |
199171a2 | 2175 | *chunkp = chunk; |
34163fc7 NB |
2176 | return 1; |
2177 | } | |
2178 | ||
3da92f27 | 2179 | static void locate_bitmap1(struct supertype *st, int fd) |
34163fc7 | 2180 | { |
34163fc7 | 2181 | unsigned long long offset; |
1e0d770c NB |
2182 | struct mdp_superblock_1 *sb; |
2183 | int mustfree = 0; | |
34163fc7 | 2184 | |
3da92f27 NB |
2185 | if (!st->sb) { |
2186 | if (st->ss->load_super(st, fd, NULL)) | |
f6d75de8 | 2187 | return; /* no error I hope... */ |
1e0d770c NB |
2188 | mustfree = 1; |
2189 | } | |
3da92f27 | 2190 | sb = st->sb; |
e478dc86 | 2191 | |
1bf4e2d9 | 2192 | offset = __le64_to_cpu(sb->super_offset); |
68754bd1 | 2193 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset); |
1e0d770c | 2194 | if (mustfree) |
f6d75de8 | 2195 | free(sb); |
1bf4e2d9 | 2196 | lseek64(fd, offset<<9, 0); |
34163fc7 NB |
2197 | } |
2198 | ||
0aa2f15b | 2199 | static int write_bitmap1(struct supertype *st, int fd, enum bitmap_update update) |
34163fc7 | 2200 | { |
3da92f27 | 2201 | struct mdp_superblock_1 *sb = st->sb; |
911cead7 | 2202 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); |
34163fc7 | 2203 | int rv = 0; |
d669228f | 2204 | void *buf; |
34163fc7 | 2205 | int towrite, n; |
308340aa | 2206 | struct align_fd afd; |
95a05b37 | 2207 | unsigned int i = 0; |
7e6e839a | 2208 | unsigned long long total_bm_space, bm_space_per_node; |
308340aa | 2209 | |
0aa2f15b GJ |
2210 | switch (update) { |
2211 | case NameUpdate: | |
2212 | /* update cluster name */ | |
2213 | if (st->cluster_name) { | |
2214 | memset((char *)bms->cluster_name, 0, sizeof(bms->cluster_name)); | |
2215 | strncpy((char *)bms->cluster_name, st->cluster_name, 64); | |
2216 | } | |
2217 | break; | |
7e6e839a GJ |
2218 | case NodeNumUpdate: |
2219 | /* cluster md only supports superblock 1.2 now */ | |
2220 | if (st->minor_version != 2) { | |
2221 | pr_err("Warning: cluster md only works with superblock 1.2\n"); | |
2222 | return -EINVAL; | |
2223 | } | |
2224 | ||
2225 | /* Each node has an independent bitmap, it is necessary to calculate the | |
2226 | * space is enough or not, first get how many bytes for the total bitmap */ | |
2227 | bm_space_per_node = calc_bitmap_size(bms, 4096); | |
2228 | ||
2229 | total_bm_space = 512 * (__le64_to_cpu(sb->data_offset) - __le64_to_cpu(sb->super_offset)); | |
2230 | total_bm_space = total_bm_space - 4096; /* leave another 4k for superblock */ | |
2231 | ||
2232 | if (bm_space_per_node * st->nodes > total_bm_space) { | |
2233 | pr_err("Warning: The max num of nodes can't exceed %llu\n", | |
2234 | total_bm_space / bm_space_per_node); | |
2235 | return -ENOMEM; | |
2236 | } | |
2237 | ||
2238 | bms->nodes = __cpu_to_le32(st->nodes); | |
2239 | break; | |
0aa2f15b GJ |
2240 | case NoUpdate: |
2241 | default: | |
2242 | break; | |
2243 | } | |
2244 | ||
308340aa | 2245 | init_afd(&afd, fd); |
34163fc7 | 2246 | |
3da92f27 | 2247 | locate_bitmap1(st, fd); |
34163fc7 | 2248 | |
d669228f JS |
2249 | if (posix_memalign(&buf, 4096, 4096)) |
2250 | return -ENOMEM; | |
2251 | ||
95a05b37 GJ |
2252 | do { |
2253 | /* Only the bitmap[0] should resync | |
2254 | * whole device on initial assembly | |
2255 | */ | |
2256 | if (i) | |
2257 | memset(buf, 0x00, 4096); | |
34163fc7 | 2258 | else |
95a05b37 GJ |
2259 | memset(buf, 0xff, 4096); |
2260 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); | |
2261 | ||
4a3d29ed | 2262 | towrite = calc_bitmap_size(bms, 4096); |
95a05b37 GJ |
2263 | while (towrite > 0) { |
2264 | n = towrite; | |
2265 | if (n > 4096) | |
2266 | n = 4096; | |
2267 | n = awrite(&afd, buf, n); | |
2268 | if (n > 0) | |
2269 | towrite -= n; | |
2270 | else | |
2271 | break; | |
2272 | if (i) | |
2273 | memset(buf, 0x00, 4096); | |
2274 | else | |
2275 | memset(buf, 0xff, 4096); | |
2276 | } | |
2277 | fsync(fd); | |
2278 | if (towrite) { | |
2279 | rv = -2; | |
34163fc7 | 2280 | break; |
95a05b37 GJ |
2281 | } |
2282 | } while (++i < __le32_to_cpu(bms->nodes)); | |
34163fc7 | 2283 | |
d669228f | 2284 | free(buf); |
34163fc7 | 2285 | return rv; |
82d9eba6 NB |
2286 | } |
2287 | ||
3da92f27 | 2288 | static void free_super1(struct supertype *st) |
df37ffc0 | 2289 | { |
3da92f27 NB |
2290 | if (st->sb) |
2291 | free(st->sb); | |
1cc7f4fe N |
2292 | while (st->info) { |
2293 | struct devinfo *di = st->info; | |
2294 | st->info = di->next; | |
2295 | if (di->fd >= 0) | |
2296 | close(di->fd); | |
2297 | free(di); | |
2298 | } | |
3da92f27 | 2299 | st->sb = NULL; |
df37ffc0 NB |
2300 | } |
2301 | ||
0e600426 | 2302 | #ifndef MDASSEMBLE |
17f25ca6 NB |
2303 | static int validate_geometry1(struct supertype *st, int level, |
2304 | int layout, int raiddisks, | |
c21e737b | 2305 | int *chunk, unsigned long long size, |
af4348dd | 2306 | unsigned long long data_offset, |
2c514b71 NB |
2307 | char *subdev, unsigned long long *freesize, |
2308 | int verbose) | |
17f25ca6 | 2309 | { |
641da745 N |
2310 | unsigned long long ldsize, devsize; |
2311 | int bmspace; | |
23bf42cc | 2312 | unsigned long long headroom; |
17f25ca6 NB |
2313 | int fd; |
2314 | ||
b42f577a N |
2315 | if (level == LEVEL_CONTAINER) { |
2316 | if (verbose) | |
e7b84f9d | 2317 | pr_err("1.x metadata does not support containers\n"); |
17f25ca6 | 2318 | return 0; |
b42f577a | 2319 | } |
7ccc4cc4 | 2320 | if (*chunk == UnSet) |
bb7295f1 N |
2321 | *chunk = DEFAULT_CHUNK; |
2322 | ||
17f25ca6 NB |
2323 | if (!subdev) |
2324 | return 1; | |
2325 | ||
23bf42cc N |
2326 | if (st->minor_version < 0) |
2327 | /* not specified, so time to set default */ | |
2328 | st->minor_version = 2; | |
2329 | ||
17f25ca6 NB |
2330 | fd = open(subdev, O_RDONLY|O_EXCL, 0); |
2331 | if (fd < 0) { | |
2c514b71 | 2332 | if (verbose) |
e7b84f9d | 2333 | pr_err("super1.x cannot open %s: %s\n", |
2c514b71 | 2334 | subdev, strerror(errno)); |
17f25ca6 NB |
2335 | return 0; |
2336 | } | |
2c514b71 | 2337 | |
17f25ca6 NB |
2338 | if (!get_dev_size(fd, subdev, &ldsize)) { |
2339 | close(fd); | |
2340 | return 0; | |
2341 | } | |
2342 | close(fd); | |
2343 | ||
641da745 N |
2344 | devsize = ldsize >> 9; |
2345 | if (devsize < 24) { | |
2346 | *freesize = 0; | |
2347 | return 0; | |
2348 | } | |
2349 | ||
2350 | /* creating: allow suitable space for bitmap */ | |
2351 | bmspace = choose_bm_space(devsize); | |
641da745 | 2352 | |
23bf42cc N |
2353 | if (data_offset == INVALID_SECTORS) |
2354 | data_offset = st->data_offset; | |
2355 | if (data_offset == INVALID_SECTORS) | |
2356 | switch (st->minor_version) { | |
641da745 | 2357 | case 0: |
23bf42cc N |
2358 | data_offset = 0; |
2359 | break; | |
641da745 N |
2360 | case 1: |
2361 | case 2: | |
23bf42cc N |
2362 | /* Choose data offset appropriate for this device |
2363 | * and use as default for whole array. | |
2364 | * The data_offset must allow for bitmap space | |
2365 | * and base metadata, should allow for some headroom | |
2366 | * for reshape, and should be rounded to multiple | |
2367 | * of 1M. | |
2368 | * Headroom is limited to 128M, but aim for about 0.1% | |
641da745 | 2369 | */ |
23bf42cc | 2370 | headroom = 128*1024*2; |
641da745 N |
2371 | while ((headroom << 10) > devsize && |
2372 | (*chunk == 0 || | |
2373 | headroom / 2 >= ((unsigned)(*chunk)*2)*2)) | |
2374 | headroom >>= 1; | |
23bf42cc N |
2375 | data_offset = 12*2 + bmspace + headroom; |
2376 | #define ONE_MEG (2*1024) | |
2377 | if (data_offset > ONE_MEG) | |
2378 | data_offset = (data_offset / ONE_MEG) * ONE_MEG; | |
641da745 N |
2379 | break; |
2380 | } | |
23bf42cc N |
2381 | if (st->data_offset == INVALID_SECTORS) |
2382 | st->data_offset = data_offset; | |
2383 | switch(st->minor_version) { | |
2384 | case 0: /* metadata at end. Round down and subtract space to reserve */ | |
2385 | devsize = (devsize & ~(4ULL*2-1)); | |
2386 | /* space for metadata, bblog, bitmap */ | |
4c0ea7b0 | 2387 | devsize -= 8*2 + 8 + bmspace; |
23bf42cc N |
2388 | break; |
2389 | case 1: | |
2390 | case 2: | |
2391 | devsize -= data_offset; | |
2392 | break; | |
641da745 | 2393 | } |
23bf42cc | 2394 | *freesize = devsize; |
17f25ca6 NB |
2395 | return 1; |
2396 | } | |
0e600426 | 2397 | #endif /* MDASSEMBLE */ |
17f25ca6 | 2398 | |
afa368f4 N |
2399 | void *super1_make_v0(struct supertype *st, struct mdinfo *info, mdp_super_t *sb0) |
2400 | { | |
2401 | /* Create a v1.0 superblock based on 'info'*/ | |
2402 | void *ret; | |
2403 | struct mdp_superblock_1 *sb; | |
2404 | int i; | |
2405 | int rfd; | |
2406 | unsigned long long offset; | |
2407 | ||
2408 | if (posix_memalign(&ret, 4096, 1024) != 0) | |
2409 | return NULL; | |
2410 | sb = ret; | |
2411 | memset(ret, 0, 1024); | |
2412 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); | |
2413 | sb->major_version = __cpu_to_le32(1); | |
2414 | ||
2415 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); | |
2416 | sprintf(sb->set_name, "%d", sb0->md_minor); | |
2417 | sb->ctime = __cpu_to_le32(info->array.ctime+1); | |
2418 | sb->level = __cpu_to_le32(info->array.level); | |
2419 | sb->layout = __cpu_to_le32(info->array.layout); | |
2420 | sb->size = __cpu_to_le64(info->component_size); | |
2421 | sb->chunksize = __cpu_to_le32(info->array.chunk_size/512); | |
2422 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); | |
ccec2685 N |
2423 | if (info->array.level > 0) |
2424 | sb->data_size = sb->size; | |
2425 | else | |
2426 | sb->data_size = st->ss->avail_size(st, st->devsize/512, 0); | |
afa368f4 N |
2427 | sb->resync_offset = MaxSector; |
2428 | sb->max_dev = __cpu_to_le32(MD_SB_DISKS); | |
2429 | sb->dev_number = __cpu_to_le32(info->disk.number); | |
2430 | sb->utime = __cpu_to_le64(info->array.utime); | |
2431 | ||
2432 | offset = st->devsize/512 - 8*2; | |
2433 | offset &= ~(4*2-1); | |
2434 | sb->super_offset = __cpu_to_le64(offset); | |
2435 | //*(__u64*)(st->other + 128 + 8 + 8) = __cpu_to_le64(offset); | |
2436 | ||
2437 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
2438 | read(rfd, sb->device_uuid, 16) != 16) { | |
2439 | __u32 r[4] = {random(), random(), random(), random()}; | |
2440 | memcpy(sb->device_uuid, r, 16); | |
2441 | } | |
2442 | if (rfd >= 0) | |
2443 | close(rfd); | |
2444 | ||
2445 | for (i = 0; i < MD_SB_DISKS; i++) { | |
2446 | int state = sb0->disks[i].state; | |
2447 | sb->dev_roles[i] = 0xFFFF; | |
2448 | if ((state & (1<<MD_DISK_SYNC)) && | |
2449 | !(state & (1<<MD_DISK_FAULTY))) | |
2450 | sb->dev_roles[i] = __cpu_to_le16(sb0->disks[i].raid_disk); | |
2451 | } | |
2452 | sb->sb_csum = calc_sb_1_csum(sb); | |
2453 | return ret; | |
2454 | } | |
2455 | ||
82d9eba6 | 2456 | struct superswitch super1 = { |
c7654afc | 2457 | #ifndef MDASSEMBLE |
82d9eba6 NB |
2458 | .examine_super = examine_super1, |
2459 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 2460 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
2461 | .detail_super = detail_super1, |
2462 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 2463 | .export_detail_super = export_detail_super1, |
111d01fc | 2464 | .write_init_super = write_init_super1, |
0e600426 N |
2465 | .validate_geometry = validate_geometry1, |
2466 | .add_to_super = add_to_super1, | |
6d388a88 | 2467 | .examine_badblocks = examine_badblocks_super1, |
74db60b0 | 2468 | .copy_metadata = copy_metadata1, |
c7654afc | 2469 | #endif |
83b6208e | 2470 | .match_home = match_home1, |
82d9eba6 NB |
2471 | .uuid_from_super = uuid_from_super1, |
2472 | .getinfo_super = getinfo_super1, | |
00bbdbda | 2473 | .container_content = container_content1, |
82d9eba6 | 2474 | .update_super = update_super1, |
82d9eba6 | 2475 | .init_super = init_super1, |
82d9eba6 | 2476 | .store_super = store_super1, |
82d9eba6 NB |
2477 | .compare_super = compare_super1, |
2478 | .load_super = load_super1, | |
2479 | .match_metadata_desc = match_metadata_desc1, | |
2480 | .avail_size = avail_size1, | |
34163fc7 NB |
2481 | .add_internal_bitmap = add_internal_bitmap1, |
2482 | .locate_bitmap = locate_bitmap1, | |
2483 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 2484 | .free_super = free_super1, |
f277ce36 NB |
2485 | #if __BYTE_ORDER == BIG_ENDIAN |
2486 | .swapuuid = 0, | |
2487 | #else | |
2488 | .swapuuid = 1, | |
2489 | #endif | |
31015d57 | 2490 | .name = "1.x", |
82d9eba6 | 2491 | }; |