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1 | /* | |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4 | * Copyright (C) 2001-2016 Neil Brown <neilb@suse.com> | |
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 | |
22 | * Email: <neilb@suse.de> | |
23 | */ | |
24 | ||
25 | #include <stddef.h> | |
26 | #include "mdadm.h" | |
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; /* used for raid5, raid6, raid10, and raid0 */ | |
47 | __u64 size; /* used size of component devices, in 512byte sectors */ | |
48 | ||
49 | __u32 chunksize; /* in 512byte sectors */ | |
50 | __u32 raid_disks; | |
51 | union { | |
52 | __u32 bitmap_offset; /* sectors after start of superblock that bitmap starts | |
53 | * NOTE: signed, so bitmap can be before superblock | |
54 | * only meaningful of feature_map[0] is set. | |
55 | */ | |
56 | ||
57 | /* only meaningful when feature_map[MD_FEATURE_PPL] is set */ | |
58 | struct { | |
59 | __s16 offset; /* sectors from start of superblock that ppl starts */ | |
60 | __u16 size; /* ppl size in sectors */ | |
61 | } ppl; | |
62 | }; | |
63 | ||
64 | /* These are only valid with feature bit '4' */ | |
65 | __u32 new_level; /* new level we are reshaping to */ | |
66 | __u64 reshape_position; /* next address in array-space for reshape */ | |
67 | __u32 delta_disks; /* change in number of raid_disks */ | |
68 | __u32 new_layout; /* new layout */ | |
69 | __u32 new_chunk; /* new chunk size (sectors) */ | |
70 | __u32 new_offset; /* signed number to add to data_offset in new | |
71 | * layout. 0 == no-change. This can be | |
72 | * different on each device in the array. | |
73 | */ | |
74 | ||
75 | /* constant this-device information - 64 bytes */ | |
76 | __u64 data_offset; /* sector start of data, often 0 */ | |
77 | __u64 data_size; /* sectors in this device that can be used for data */ | |
78 | __u64 super_offset; /* sector start of this superblock */ | |
79 | union { | |
80 | __u64 recovery_offset;/* sectors before this offset (from data_offset) have been recovered */ | |
81 | __u64 journal_tail;/* journal tail of journal device (from data_offset) */ | |
82 | }; | |
83 | __u32 dev_number; /* permanent identifier of this device - not role in raid */ | |
84 | __u32 cnt_corrected_read; /* number of read errors that were corrected by re-writing */ | |
85 | __u8 device_uuid[16]; /* user-space setable, ignored by kernel */ | |
86 | __u8 devflags; /* per-device flags. Only one defined...*/ | |
87 | #define WriteMostly1 1 /* mask for writemostly flag in above */ | |
88 | #define FailFast1 2 /* Device should get FailFast requests */ | |
89 | /* bad block log. If there are any bad blocks the feature flag is set. | |
90 | * if offset and size are non-zero, that space is reserved and available. | |
91 | */ | |
92 | __u8 bblog_shift; /* shift from sectors to block size for badblock list */ | |
93 | __u16 bblog_size; /* number of sectors reserved for badblock list */ | |
94 | __u32 bblog_offset; /* sector offset from superblock to bblog, signed */ | |
95 | ||
96 | /* array state information - 64 bytes */ | |
97 | __u64 utime; /* 40 bits second, 24 bits microseconds */ | |
98 | __u64 events; /* incremented when superblock updated */ | |
99 | __u64 resync_offset; /* data before this offset (from data_offset) known to be in sync */ | |
100 | __u32 sb_csum; /* checksum upto dev_roles[max_dev] */ | |
101 | __u32 max_dev; /* size of dev_roles[] array to consider */ | |
102 | __u8 pad3[64-32]; /* set to 0 when writing */ | |
103 | ||
104 | /* device state information. Indexed by dev_number. | |
105 | * 2 bytes per device | |
106 | * Note there are no per-device state flags. State information is rolled | |
107 | * into the 'roles' value. If a device is spare or faulty, then it doesn't | |
108 | * have a meaningful role. | |
109 | */ | |
110 | __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ | |
111 | }; | |
112 | ||
113 | #define MAX_SB_SIZE 4096 | |
114 | /* bitmap super size is 256, but we round up to a sector for alignment */ | |
115 | #define BM_SUPER_SIZE 512 | |
116 | #define MAX_DEVS ((int)(MAX_SB_SIZE - sizeof(struct mdp_superblock_1)) / 2) | |
117 | #define SUPER1_SIZE (MAX_SB_SIZE + BM_SUPER_SIZE \ | |
118 | + sizeof(struct misc_dev_info)) | |
119 | ||
120 | struct misc_dev_info { | |
121 | __u64 device_size; | |
122 | }; | |
123 | ||
124 | #define MULTIPLE_PPL_AREA_SIZE_SUPER1 (1024 * 1024) /* Size of the whole | |
125 | * mutliple PPL area | |
126 | */ | |
127 | /* feature_map bits */ | |
128 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
129 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
130 | * must be honoured | |
131 | */ | |
132 | #define MD_FEATURE_RESHAPE_ACTIVE 4 | |
133 | #define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */ | |
134 | #define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an | |
135 | * active device with same 'role'. | |
136 | * 'recovery_offset' is also set. | |
137 | */ | |
138 | #define MD_FEATURE_RESHAPE_BACKWARDS 32 /* Reshape doesn't change number | |
139 | * of devices, but is going | |
140 | * backwards anyway. | |
141 | */ | |
142 | #define MD_FEATURE_NEW_OFFSET 64 /* new_offset must be honoured */ | |
143 | #define MD_FEATURE_BITMAP_VERSIONED 256 /* bitmap version number checked properly */ | |
144 | #define MD_FEATURE_JOURNAL 512 /* support write journal */ | |
145 | #define MD_FEATURE_PPL 1024 /* support PPL */ | |
146 | #define MD_FEATURE_MUTLIPLE_PPLS 2048 /* support for multiple PPLs */ | |
147 | #define MD_FEATURE_RAID0_LAYOUT 4096 /* layout is meaningful in RAID0 */ | |
148 | #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \ | |
149 | |MD_FEATURE_RECOVERY_OFFSET \ | |
150 | |MD_FEATURE_RESHAPE_ACTIVE \ | |
151 | |MD_FEATURE_BAD_BLOCKS \ | |
152 | |MD_FEATURE_REPLACEMENT \ | |
153 | |MD_FEATURE_RESHAPE_BACKWARDS \ | |
154 | |MD_FEATURE_NEW_OFFSET \ | |
155 | |MD_FEATURE_BITMAP_VERSIONED \ | |
156 | |MD_FEATURE_JOURNAL \ | |
157 | |MD_FEATURE_PPL \ | |
158 | |MD_FEATURE_MULTIPLE_PPLS \ | |
159 | |MD_FEATURE_RAID0_LAYOUT \ | |
160 | ) | |
161 | ||
162 | static int role_from_sb(struct mdp_superblock_1 *sb) | |
163 | { | |
164 | unsigned int d; | |
165 | int role; | |
166 | ||
167 | d = __le32_to_cpu(sb->dev_number); | |
168 | if (d < __le32_to_cpu(sb->max_dev)) | |
169 | role = __le16_to_cpu(sb->dev_roles[d]); | |
170 | else | |
171 | role = MD_DISK_ROLE_SPARE; | |
172 | return role; | |
173 | } | |
174 | ||
175 | /* return how many bytes are needed for bitmap, for cluster-md each node | |
176 | * should have it's own bitmap */ | |
177 | static unsigned int calc_bitmap_size(bitmap_super_t *bms, unsigned int boundary) | |
178 | { | |
179 | unsigned long long bits, bytes; | |
180 | ||
181 | bits = bitmap_bits(__le64_to_cpu(bms->sync_size), | |
182 | __le32_to_cpu(bms->chunksize)); | |
183 | bytes = (bits+7) >> 3; | |
184 | bytes += sizeof(bitmap_super_t); | |
185 | bytes = ROUND_UP(bytes, boundary); | |
186 | ||
187 | return bytes; | |
188 | } | |
189 | ||
190 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) | |
191 | { | |
192 | unsigned int disk_csum, csum; | |
193 | unsigned long long newcsum; | |
194 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
195 | unsigned int *isuper = (unsigned int *)sb; | |
196 | ||
197 | /* make sure I can count... */ | |
198 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
199 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
200 | sizeof(struct mdp_superblock_1) != 256) { | |
201 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
202 | } | |
203 | ||
204 | disk_csum = sb->sb_csum; | |
205 | sb->sb_csum = 0; | |
206 | newcsum = 0; | |
207 | for (; size >= 4; size -= 4) { | |
208 | newcsum += __le32_to_cpu(*isuper); | |
209 | isuper++; | |
210 | } | |
211 | ||
212 | if (size == 2) | |
213 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
214 | ||
215 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
216 | sb->sb_csum = disk_csum; | |
217 | return __cpu_to_le32(csum); | |
218 | } | |
219 | ||
220 | /* | |
221 | * Information related to file descriptor used for aligned reads/writes. | |
222 | * Cache the block size. | |
223 | */ | |
224 | struct align_fd { | |
225 | int fd; | |
226 | int blk_sz; | |
227 | }; | |
228 | ||
229 | static void init_afd(struct align_fd *afd, int fd) | |
230 | { | |
231 | afd->fd = fd; | |
232 | if (!get_dev_sector_size(afd->fd, NULL, (unsigned int *)&afd->blk_sz)) | |
233 | afd->blk_sz = 512; | |
234 | } | |
235 | ||
236 | static char abuf[4096+4096]; | |
237 | ||
238 | static int aread(struct align_fd *afd, void *buf, int len) | |
239 | { | |
240 | /* aligned read. | |
241 | * On devices with a 4K sector size, we need to read | |
242 | * the full sector and copy relevant bits into | |
243 | * the buffer | |
244 | */ | |
245 | int bsize, iosize; | |
246 | char *b; | |
247 | int n; | |
248 | ||
249 | bsize = afd->blk_sz; | |
250 | ||
251 | if (!bsize || bsize > 4096 || len > 4096) { | |
252 | if (!bsize) | |
253 | fprintf(stderr, "WARNING - aread() called with invalid block size\n"); | |
254 | return -1; | |
255 | } | |
256 | b = ROUND_UP_PTR((char *)abuf, 4096); | |
257 | ||
258 | for (iosize = 0; iosize < len; iosize += bsize) | |
259 | ; | |
260 | n = read(afd->fd, b, iosize); | |
261 | if (n <= 0) | |
262 | return n; | |
263 | lseek(afd->fd, len - n, 1); | |
264 | if (n > len) | |
265 | n = len; | |
266 | memcpy(buf, b, n); | |
267 | return n; | |
268 | } | |
269 | ||
270 | static int awrite(struct align_fd *afd, void *buf, int len) | |
271 | { | |
272 | /* aligned write. | |
273 | * On devices with a 4K sector size, we need to write | |
274 | * the full sector. We pre-read if the sector is larger | |
275 | * than the write. | |
276 | * The address must be sector-aligned. | |
277 | */ | |
278 | int bsize, iosize; | |
279 | char *b; | |
280 | int n; | |
281 | ||
282 | bsize = afd->blk_sz; | |
283 | if (!bsize || bsize > 4096 || len > 4096) { | |
284 | if (!bsize) | |
285 | fprintf(stderr, "WARNING - awrite() called with invalid block size\n"); | |
286 | return -1; | |
287 | } | |
288 | b = ROUND_UP_PTR((char *)abuf, 4096); | |
289 | ||
290 | for (iosize = 0; iosize < len ; iosize += bsize) | |
291 | ; | |
292 | ||
293 | if (len != iosize) { | |
294 | n = read(afd->fd, b, iosize); | |
295 | if (n <= 0) | |
296 | return n; | |
297 | lseek(afd->fd, -n, 1); | |
298 | } | |
299 | ||
300 | memcpy(b, buf, len); | |
301 | n = write(afd->fd, b, iosize); | |
302 | if (n <= 0) | |
303 | return n; | |
304 | lseek(afd->fd, len - n, 1); | |
305 | return len; | |
306 | } | |
307 | ||
308 | static inline unsigned int md_feature_any_ppl_on(__u32 feature_map) | |
309 | { | |
310 | return ((__cpu_to_le32(feature_map) & | |
311 | (MD_FEATURE_PPL | MD_FEATURE_MUTLIPLE_PPLS))); | |
312 | } | |
313 | ||
314 | static inline unsigned int choose_ppl_space(int chunk) | |
315 | { | |
316 | return (PPL_HEADER_SIZE >> 9) + (chunk > 128*2 ? chunk : 128*2); | |
317 | } | |
318 | ||
319 | static void examine_super1(struct supertype *st, char *homehost) | |
320 | { | |
321 | struct mdp_superblock_1 *sb = st->sb; | |
322 | bitmap_super_t *bms = (bitmap_super_t *)(((char *)sb) + MAX_SB_SIZE); | |
323 | time_t atime; | |
324 | unsigned int d; | |
325 | int role; | |
326 | int delta_extra = 0; | |
327 | int i; | |
328 | char *c; | |
329 | int l = homehost ? strlen(homehost) : 0; | |
330 | int layout; | |
331 | unsigned long long sb_offset; | |
332 | struct mdinfo info; | |
333 | int inconsistent = 0; | |
334 | ||
335 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
336 | printf(" Version : 1"); | |
337 | sb_offset = __le64_to_cpu(sb->super_offset); | |
338 | if (sb_offset <= 4) | |
339 | printf(".1\n"); | |
340 | else if (sb_offset <= 8) | |
341 | printf(".2\n"); | |
342 | else | |
343 | printf(".0\n"); | |
344 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); | |
345 | printf(" Array UUID : "); | |
346 | for (i = 0; i < 16; i++) { | |
347 | if ((i & 3) == 0 && i != 0) | |
348 | printf(":"); | |
349 | printf("%02x", sb->set_uuid[i]); | |
350 | } | |
351 | printf("\n"); | |
352 | printf(" Name : %.32s", sb->set_name); | |
353 | if (l > 0 && l < 32 && | |
354 | sb->set_name[l] == ':' && | |
355 | strncmp(sb->set_name, homehost, l) == 0) | |
356 | printf(" (local to host %s)", homehost); | |
357 | printf("\n"); | |
358 | if (bms->nodes > 0 && | |
359 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) | |
360 | printf(" Cluster Name : %-64s\n", bms->cluster_name); | |
361 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; | |
362 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
363 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
364 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
365 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
366 | printf("\n"); | |
367 | printf(" Avail Dev Size : %llu sectors%s\n", | |
368 | (unsigned long long)__le64_to_cpu(sb->data_size), | |
369 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
370 | if (__le32_to_cpu(sb->level) > 0) { | |
371 | int ddsks = 0, ddsks_denom = 1; | |
372 | switch(__le32_to_cpu(sb->level)) { | |
373 | case 1: ddsks=1;break; | |
374 | case 4: | |
375 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; | |
376 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
377 | case 10: | |
378 | layout = __le32_to_cpu(sb->layout); | |
379 | ddsks = __le32_to_cpu(sb->raid_disks); | |
380 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
381 | } | |
382 | if (ddsks) { | |
383 | long long asize = __le64_to_cpu(sb->size); | |
384 | asize = (asize << 9) * ddsks / ddsks_denom; | |
385 | printf(" Array Size : %llu KiB%s\n", | |
386 | asize >> 10, human_size(asize)); | |
387 | } | |
388 | if (sb->size != sb->data_size) | |
389 | printf(" Used Dev Size : %llu sectors%s\n", | |
390 | (unsigned long long)__le64_to_cpu(sb->size), | |
391 | human_size(__le64_to_cpu(sb->size)<<9)); | |
392 | } | |
393 | if (sb->data_offset) | |
394 | printf(" Data Offset : %llu sectors\n", | |
395 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
396 | if (sb->new_offset && | |
397 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) { | |
398 | unsigned long long offset = __le64_to_cpu(sb->data_offset); | |
399 | offset += (signed)(int32_t)__le32_to_cpu(sb->new_offset); | |
400 | printf(" New Offset : %llu sectors\n", offset); | |
401 | } | |
402 | printf(" Super Offset : %llu sectors\n", | |
403 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
404 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) | |
405 | printf("Recovery Offset : %llu sectors\n", | |
406 | (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
407 | ||
408 | st->ss->getinfo_super(st, &info, NULL); | |
409 | if (info.space_after != 1 && | |
410 | !(__le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET)) { | |
411 | printf(" Unused Space : before=%llu sectors, ", | |
412 | info.space_before); | |
413 | if (info.space_after < INT64_MAX) | |
414 | printf("after=%llu sectors\n", info.space_after); | |
415 | else | |
416 | printf("after=-%llu sectors DEVICE TOO SMALL\n", | |
417 | UINT64_MAX - info.space_after); | |
418 | } | |
419 | printf(" State : %s%s\n", | |
420 | (__le64_to_cpu(sb->resync_offset) + 1) ? "active":"clean", | |
421 | (info.space_after > INT64_MAX) ? " TRUNCATED DEVICE" : ""); | |
422 | printf(" Device UUID : "); | |
423 | for (i = 0; i < 16; i++) { | |
424 | if ((i & 3)==0 && i != 0) | |
425 | printf(":"); | |
426 | printf("%02x", sb->device_uuid[i]); | |
427 | } | |
428 | printf("\n"); | |
429 | printf("\n"); | |
430 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
431 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
432 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); | |
433 | } else if (md_feature_any_ppl_on(sb->feature_map)) { | |
434 | printf(" PPL : %u sectors at offset %d sectors from superblock\n", | |
435 | __le16_to_cpu(sb->ppl.size), | |
436 | __le16_to_cpu(sb->ppl.offset)); | |
437 | } | |
438 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)) { | |
439 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long) | |
440 | __le64_to_cpu(sb->reshape_position)/2, | |
441 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); | |
442 | if (__le32_to_cpu(sb->delta_disks)) { | |
443 | printf(" Delta Devices : %d", | |
444 | __le32_to_cpu(sb->delta_disks)); | |
445 | printf(" (%d->%d)\n", | |
446 | __le32_to_cpu(sb->raid_disks) - | |
447 | __le32_to_cpu(sb->delta_disks), | |
448 | __le32_to_cpu(sb->raid_disks)); | |
449 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
450 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
451 | } | |
452 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
453 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
454 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
455 | } | |
456 | if (__le32_to_cpu(sb->new_layout) != | |
457 | __le32_to_cpu(sb->layout)) { | |
458 | if (__le32_to_cpu(sb->level) == 5) { | |
459 | c = map_num(r5layout, | |
460 | __le32_to_cpu(sb->new_layout)); | |
461 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
462 | } | |
463 | if (__le32_to_cpu(sb->level) == 6) { | |
464 | c = map_num(r6layout, | |
465 | __le32_to_cpu(sb->new_layout)); | |
466 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
467 | } | |
468 | if (__le32_to_cpu(sb->level) == 10) { | |
469 | printf(" New Layout :"); | |
470 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
471 | printf("\n"); | |
472 | } | |
473 | } | |
474 | if (__le32_to_cpu(sb->new_chunk) != | |
475 | __le32_to_cpu(sb->chunksize)) | |
476 | printf(" New Chunksize : %dK\n", | |
477 | __le32_to_cpu(sb->new_chunk)/2); | |
478 | printf("\n"); | |
479 | } | |
480 | if (sb->devflags) { | |
481 | printf(" Flags :"); | |
482 | if (sb->devflags & WriteMostly1) | |
483 | printf(" write-mostly"); | |
484 | if (sb->devflags & FailFast1) | |
485 | printf(" failfast"); | |
486 | printf("\n"); | |
487 | } | |
488 | ||
489 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
490 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
491 | ||
492 | if (sb->bblog_size && sb->bblog_offset) { | |
493 | printf(" Bad Block Log : %d entries available at offset %ld sectors", | |
494 | __le16_to_cpu(sb->bblog_size)*512/8, | |
495 | (long)(int32_t)__le32_to_cpu(sb->bblog_offset)); | |
496 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
497 | printf(" - bad blocks present."); | |
498 | printf("\n"); | |
499 | } | |
500 | ||
501 | if (calc_sb_1_csum(sb) == sb->sb_csum) | |
502 | printf(" Checksum : %x - correct\n", | |
503 | __le32_to_cpu(sb->sb_csum)); | |
504 | else | |
505 | printf(" Checksum : %x - expected %x\n", | |
506 | __le32_to_cpu(sb->sb_csum), | |
507 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
508 | printf(" Events : %llu\n", | |
509 | (unsigned long long)__le64_to_cpu(sb->events)); | |
510 | printf("\n"); | |
511 | if (__le32_to_cpu(sb->level) == 0 && | |
512 | (sb->feature_map & __cpu_to_le32(MD_FEATURE_RAID0_LAYOUT))) { | |
513 | c = map_num(r0layout, __le32_to_cpu(sb->layout)); | |
514 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
515 | } | |
516 | if (__le32_to_cpu(sb->level) == 5) { | |
517 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
518 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
519 | } | |
520 | if (__le32_to_cpu(sb->level) == 6) { | |
521 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
522 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
523 | } | |
524 | if (__le32_to_cpu(sb->level) == 10) { | |
525 | int lo = __le32_to_cpu(sb->layout); | |
526 | printf(" Layout :"); | |
527 | print_r10_layout(lo); | |
528 | printf("\n"); | |
529 | } | |
530 | switch(__le32_to_cpu(sb->level)) { | |
531 | case 0: | |
532 | case 4: | |
533 | case 5: | |
534 | case 6: | |
535 | case 10: | |
536 | printf(" Chunk Size : %dK\n", | |
537 | __le32_to_cpu(sb->chunksize)/2); | |
538 | break; | |
539 | case -1: | |
540 | printf(" Rounding : %dK\n", | |
541 | __le32_to_cpu(sb->chunksize)/2); | |
542 | break; | |
543 | default: | |
544 | break; | |
545 | } | |
546 | printf("\n"); | |
547 | printf(" Device Role : "); | |
548 | role = role_from_sb(sb); | |
549 | if (role >= MD_DISK_ROLE_FAULTY) | |
550 | printf("spare\n"); | |
551 | else if (role == MD_DISK_ROLE_JOURNAL) | |
552 | printf("Journal\n"); | |
553 | else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_REPLACEMENT)) | |
554 | printf("Replacement device %d\n", role); | |
555 | else | |
556 | printf("Active device %d\n", role); | |
557 | ||
558 | printf(" Array State : "); | |
559 | for (d = 0; d < __le32_to_cpu(sb->raid_disks) + delta_extra; d++) { | |
560 | int cnt = 0; | |
561 | unsigned int i; | |
562 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { | |
563 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); | |
564 | if (role == d) | |
565 | cnt++; | |
566 | } | |
567 | if (cnt == 2 && __le32_to_cpu(sb->level) > 0) | |
568 | printf("R"); | |
569 | else if (cnt == 1) | |
570 | printf("A"); | |
571 | else if (cnt == 0) | |
572 | printf("."); | |
573 | else { | |
574 | printf("?"); | |
575 | inconsistent = 1; | |
576 | } | |
577 | } | |
578 | printf(" ('A' == active, '.' == missing, 'R' == replacing)"); | |
579 | printf("\n"); | |
580 | for (d = 0; d < __le32_to_cpu(sb->max_dev); d++) { | |
581 | unsigned int r = __le16_to_cpu(sb->dev_roles[d]); | |
582 | if (r <= MD_DISK_ROLE_MAX && | |
583 | r > __le32_to_cpu(sb->raid_disks) + delta_extra) | |
584 | inconsistent = 1; | |
585 | } | |
586 | if (inconsistent) { | |
587 | printf("WARNING Array state is inconsistent - each number should appear only once\n"); | |
588 | for (d = 0; d < __le32_to_cpu(sb->max_dev); d++) | |
589 | if (__le16_to_cpu(sb->dev_roles[d]) >= | |
590 | MD_DISK_ROLE_FAULTY) | |
591 | printf(" %d:-", d); | |
592 | else | |
593 | printf(" %d:%d", d, | |
594 | __le16_to_cpu(sb->dev_roles[d])); | |
595 | printf("\n"); | |
596 | } | |
597 | } | |
598 | ||
599 | static void brief_examine_super1(struct supertype *st, int verbose) | |
600 | { | |
601 | struct mdp_superblock_1 *sb = st->sb; | |
602 | int i; | |
603 | unsigned long long sb_offset; | |
604 | char *nm; | |
605 | char *c = map_num(pers, __le32_to_cpu(sb->level)); | |
606 | ||
607 | nm = strchr(sb->set_name, ':'); | |
608 | if (nm) | |
609 | nm++; | |
610 | else if (sb->set_name[0]) | |
611 | nm = sb->set_name; | |
612 | else | |
613 | nm = NULL; | |
614 | ||
615 | printf("ARRAY "); | |
616 | if (nm) { | |
617 | printf(DEV_MD_DIR "%s", nm); | |
618 | putchar(' '); | |
619 | } | |
620 | if (verbose && c) | |
621 | printf(" level=%s", c); | |
622 | sb_offset = __le64_to_cpu(sb->super_offset); | |
623 | if (sb_offset <= 4) | |
624 | printf(" metadata=1.1 "); | |
625 | else if (sb_offset <= 8) | |
626 | printf(" metadata=1.2 "); | |
627 | else | |
628 | printf(" metadata=1.0 "); | |
629 | if (verbose) | |
630 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
631 | printf("UUID="); | |
632 | for (i = 0; i < 16; i++) { | |
633 | if ((i & 3)==0 && i != 0) | |
634 | printf(":"); | |
635 | printf("%02x", sb->set_uuid[i]); | |
636 | } | |
637 | printf("\n"); | |
638 | } | |
639 | ||
640 | static void export_examine_super1(struct supertype *st) | |
641 | { | |
642 | struct mdp_superblock_1 *sb = st->sb; | |
643 | int i; | |
644 | int len = 32; | |
645 | int layout; | |
646 | ||
647 | printf("MD_LEVEL=%s\n", map_num_s(pers, __le32_to_cpu(sb->level))); | |
648 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
649 | for (i = 0; i < 32; i++) | |
650 | if (sb->set_name[i] == '\n' || sb->set_name[i] == '\0') { | |
651 | len = i; | |
652 | break; | |
653 | } | |
654 | if (len) | |
655 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
656 | if (__le32_to_cpu(sb->level) > 0) { | |
657 | int ddsks = 0, ddsks_denom = 1; | |
658 | switch(__le32_to_cpu(sb->level)) { | |
659 | case 1: | |
660 | ddsks = 1; | |
661 | break; | |
662 | case 4: | |
663 | case 5: | |
664 | ddsks = __le32_to_cpu(sb->raid_disks)-1; | |
665 | break; | |
666 | case 6: | |
667 | ddsks = __le32_to_cpu(sb->raid_disks)-2; | |
668 | break; | |
669 | case 10: | |
670 | layout = __le32_to_cpu(sb->layout); | |
671 | ddsks = __le32_to_cpu(sb->raid_disks); | |
672 | ddsks_denom = (layout&255) * ((layout>>8)&255); | |
673 | } | |
674 | if (ddsks) { | |
675 | long long asize = __le64_to_cpu(sb->size); | |
676 | asize = (asize << 9) * ddsks / ddsks_denom; | |
677 | printf("MD_ARRAY_SIZE=%s\n", | |
678 | human_size_brief(asize, JEDEC)); | |
679 | } | |
680 | } | |
681 | printf("MD_UUID="); | |
682 | for (i = 0; i < 16; i++) { | |
683 | if ((i & 3) == 0 && i != 0) | |
684 | printf(":"); | |
685 | printf("%02x", sb->set_uuid[i]); | |
686 | } | |
687 | printf("\n"); | |
688 | printf("MD_UPDATE_TIME=%llu\n", | |
689 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
690 | printf("MD_DEV_UUID="); | |
691 | for (i = 0; i < 16; i++) { | |
692 | if ((i & 3) == 0 && i != 0) | |
693 | printf(":"); | |
694 | printf("%02x", sb->device_uuid[i]); | |
695 | } | |
696 | printf("\n"); | |
697 | printf("MD_EVENTS=%llu\n", | |
698 | (unsigned long long)__le64_to_cpu(sb->events)); | |
699 | } | |
700 | ||
701 | static int copy_metadata1(struct supertype *st, int from, int to) | |
702 | { | |
703 | /* Read superblock. If it looks good, write it out. | |
704 | * Then if a bitmap is present, copy that. | |
705 | * And if a bad-block-list is present, copy that too. | |
706 | */ | |
707 | void *buf; | |
708 | unsigned long long dsize, sb_offset; | |
709 | const int bufsize = 4*1024; | |
710 | struct mdp_superblock_1 super, *sb; | |
711 | ||
712 | if (posix_memalign(&buf, 4096, bufsize) != 0) | |
713 | return 1; | |
714 | ||
715 | if (!get_dev_size(from, NULL, &dsize)) | |
716 | goto err; | |
717 | ||
718 | dsize >>= 9; | |
719 | if (dsize < 24) | |
720 | goto err; | |
721 | switch(st->minor_version) { | |
722 | case 0: | |
723 | sb_offset = dsize; | |
724 | sb_offset -= 8*2; | |
725 | sb_offset &= ~(4*2-1); | |
726 | break; | |
727 | case 1: | |
728 | sb_offset = 0; | |
729 | break; | |
730 | case 2: | |
731 | sb_offset = 4*2; | |
732 | break; | |
733 | default: | |
734 | goto err; | |
735 | } | |
736 | ||
737 | if (lseek64(from, sb_offset << 9, 0) < 0LL) | |
738 | goto err; | |
739 | if (read(from, buf, bufsize) != bufsize) | |
740 | goto err; | |
741 | ||
742 | sb = buf; | |
743 | super = *sb; // save most of sb for when we reuse buf | |
744 | ||
745 | if (__le32_to_cpu(super.magic) != MD_SB_MAGIC || | |
746 | __le32_to_cpu(super.major_version) != 1 || | |
747 | __le64_to_cpu(super.super_offset) != sb_offset || | |
748 | calc_sb_1_csum(sb) != super.sb_csum) | |
749 | goto err; | |
750 | ||
751 | if (lseek64(to, sb_offset << 9, 0) < 0LL) | |
752 | goto err; | |
753 | if (write(to, buf, bufsize) != bufsize) | |
754 | goto err; | |
755 | ||
756 | if (super.feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
757 | unsigned long long bitmap_offset = sb_offset; | |
758 | int bytes = 4096; // just an estimate. | |
759 | int written = 0; | |
760 | struct align_fd afrom, ato; | |
761 | ||
762 | init_afd(&afrom, from); | |
763 | init_afd(&ato, to); | |
764 | ||
765 | bitmap_offset += (int32_t)__le32_to_cpu(super.bitmap_offset); | |
766 | ||
767 | if (lseek64(from, bitmap_offset<<9, 0) < 0) | |
768 | goto err; | |
769 | if (lseek64(to, bitmap_offset<<9, 0) < 0) | |
770 | goto err; | |
771 | ||
772 | for (written = 0; written < bytes ; ) { | |
773 | int n = bytes - written; | |
774 | if (n > 4096) | |
775 | n = 4096; | |
776 | if (aread(&afrom, buf, n) != n) | |
777 | goto err; | |
778 | if (written == 0) { | |
779 | /* have the header, can calculate | |
780 | * correct bitmap bytes */ | |
781 | bitmap_super_t *bms; | |
782 | bms = (void *)buf; | |
783 | bytes = calc_bitmap_size(bms, 512); | |
784 | if (n > bytes) | |
785 | n = bytes; | |
786 | } | |
787 | if (awrite(&ato, buf, n) != n) | |
788 | goto err; | |
789 | written += n; | |
790 | } | |
791 | } | |
792 | ||
793 | if (super.bblog_size != 0 && | |
794 | __le16_to_cpu(super.bblog_size) <= 100 && | |
795 | super.bblog_offset != 0 && | |
796 | (super.feature_map & __le32_to_cpu(MD_FEATURE_BAD_BLOCKS))) { | |
797 | /* There is a bad block log */ | |
798 | unsigned long long bb_offset = sb_offset; | |
799 | int bytes = __le16_to_cpu(super.bblog_size) * 512; | |
800 | int written = 0; | |
801 | struct align_fd afrom, ato; | |
802 | ||
803 | init_afd(&afrom, from); | |
804 | init_afd(&ato, to); | |
805 | ||
806 | bb_offset += (int32_t)__le32_to_cpu(super.bblog_offset); | |
807 | ||
808 | if (lseek64(from, bb_offset<<9, 0) < 0) | |
809 | goto err; | |
810 | if (lseek64(to, bb_offset<<9, 0) < 0) | |
811 | goto err; | |
812 | ||
813 | for (written = 0; written < bytes ; ) { | |
814 | int n = bytes - written; | |
815 | if (n > 4096) | |
816 | n = 4096; | |
817 | if (aread(&afrom, buf, n) != n) | |
818 | goto err; | |
819 | ||
820 | if (awrite(&ato, buf, n) != n) | |
821 | goto err; | |
822 | written += n; | |
823 | } | |
824 | } | |
825 | ||
826 | free(buf); | |
827 | return 0; | |
828 | ||
829 | err: | |
830 | free(buf); | |
831 | return 1; | |
832 | } | |
833 | ||
834 | static void detail_super1(struct supertype *st, char *homehost, char *subarray) | |
835 | { | |
836 | struct mdp_superblock_1 *sb = st->sb; | |
837 | bitmap_super_t *bms = (bitmap_super_t *)(((char *)sb) + MAX_SB_SIZE); | |
838 | int i; | |
839 | int l = homehost ? strlen(homehost) : 0; | |
840 | ||
841 | printf(" Name : %.32s", sb->set_name); | |
842 | if (l > 0 && l < 32 && sb->set_name[l] == ':' && | |
843 | strncmp(sb->set_name, homehost, l) == 0) | |
844 | printf(" (local to host %s)", homehost); | |
845 | if (bms->nodes > 0 && | |
846 | (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) | |
847 | printf("\n Cluster Name : %-64s", bms->cluster_name); | |
848 | printf("\n UUID : "); | |
849 | for (i = 0; i < 16; i++) { | |
850 | if ((i & 3) == 0 && i != 0) | |
851 | printf(":"); | |
852 | printf("%02x", sb->set_uuid[i]); | |
853 | } | |
854 | printf("\n Events : %llu\n\n", | |
855 | (unsigned long long)__le64_to_cpu(sb->events)); | |
856 | } | |
857 | ||
858 | static void brief_detail_super1(struct supertype *st, char *subarray) | |
859 | { | |
860 | struct mdp_superblock_1 *sb = st->sb; | |
861 | int i; | |
862 | ||
863 | printf(" UUID="); | |
864 | for (i = 0; i < 16; i++) { | |
865 | if ((i & 3) == 0 && i != 0) | |
866 | printf(":"); | |
867 | printf("%02x", sb->set_uuid[i]); | |
868 | } | |
869 | } | |
870 | ||
871 | static void export_detail_super1(struct supertype *st) | |
872 | { | |
873 | struct mdp_superblock_1 *sb = st->sb; | |
874 | int i; | |
875 | int len = 32; | |
876 | ||
877 | for (i = 0; i < 32; i++) | |
878 | if (sb->set_name[i] == '\n' || sb->set_name[i] == '\0') { | |
879 | len = i; | |
880 | break; | |
881 | } | |
882 | if (len) | |
883 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
884 | } | |
885 | ||
886 | static int examine_badblocks_super1(struct supertype *st, int fd, char *devname) | |
887 | { | |
888 | struct mdp_superblock_1 *sb = st->sb; | |
889 | unsigned long long offset; | |
890 | int size; | |
891 | __u64 *bbl, *bbp; | |
892 | int i; | |
893 | ||
894 | if (!sb->bblog_size || __le16_to_cpu(sb->bblog_size) > 100 || | |
895 | !sb->bblog_offset){ | |
896 | printf("No bad-blocks list configured on %s\n", devname); | |
897 | return 0; | |
898 | } | |
899 | if ((sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) == 0) { | |
900 | printf("Bad-blocks list is empty in %s\n", devname); | |
901 | return 0; | |
902 | } | |
903 | ||
904 | size = __le16_to_cpu(sb->bblog_size)* 512; | |
905 | if (posix_memalign((void **)&bbl, 4096, size) != 0) { | |
906 | pr_err("could not allocate badblocks list\n"); | |
907 | return 0; | |
908 | } | |
909 | offset = __le64_to_cpu(sb->super_offset) + | |
910 | (int)__le32_to_cpu(sb->bblog_offset); | |
911 | offset <<= 9; | |
912 | if (lseek64(fd, offset, 0) < 0) { | |
913 | pr_err("Cannot seek to bad-blocks list\n"); | |
914 | return 1; | |
915 | } | |
916 | if (read(fd, bbl, size) != size) { | |
917 | pr_err("Cannot read bad-blocks list\n"); | |
918 | return 1; | |
919 | } | |
920 | /* 64bits per entry. 10 bits is block-count, 54 bits is block | |
921 | * offset. Blocks are sectors unless bblog->shift makes them bigger | |
922 | */ | |
923 | bbp = (__u64*)bbl; | |
924 | printf("Bad-blocks on %s:\n", devname); | |
925 | for (i = 0; i < size/8; i++, bbp++) { | |
926 | __u64 bb = __le64_to_cpu(*bbp); | |
927 | int count = bb & 0x3ff; | |
928 | unsigned long long sector = bb >> 10; | |
929 | ||
930 | if (bb + 1 == 0) | |
931 | break; | |
932 | ||
933 | sector <<= sb->bblog_shift; | |
934 | count <<= sb->bblog_shift; | |
935 | ||
936 | printf("%20llu for %d sectors\n", sector, count); | |
937 | } | |
938 | return 0; | |
939 | } | |
940 | ||
941 | static int match_home1(struct supertype *st, char *homehost) | |
942 | { | |
943 | struct mdp_superblock_1 *sb = st->sb; | |
944 | int l = homehost ? strlen(homehost) : 0; | |
945 | ||
946 | return (l > 0 && l < 32 && sb->set_name[l] == ':' && | |
947 | strncmp(sb->set_name, homehost, l) == 0); | |
948 | } | |
949 | ||
950 | static void uuid_from_super1(struct supertype *st, int uuid[4]) | |
951 | { | |
952 | struct mdp_superblock_1 *super = st->sb; | |
953 | char *cuuid = (char *)uuid; | |
954 | int i; | |
955 | for (i = 0; i < 16; i++) | |
956 | cuuid[i] = super->set_uuid[i]; | |
957 | } | |
958 | ||
959 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) | |
960 | { | |
961 | struct mdp_superblock_1 *sb = st->sb; | |
962 | struct bitmap_super_s *bsb = (void *)(((char *)sb) + MAX_SB_SIZE); | |
963 | struct misc_dev_info *misc = | |
964 | (void *)(((char *)sb) + MAX_SB_SIZE+BM_SUPER_SIZE); | |
965 | int working = 0; | |
966 | unsigned int i; | |
967 | unsigned int role; | |
968 | unsigned int map_disks = info->array.raid_disks; | |
969 | unsigned long long super_offset; | |
970 | unsigned long long data_size; | |
971 | ||
972 | memset(info, 0, sizeof(*info)); | |
973 | info->array.major_version = 1; | |
974 | info->array.minor_version = st->minor_version; | |
975 | info->array.patch_version = 0; | |
976 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
977 | info->array.level = __le32_to_cpu(sb->level); | |
978 | info->array.layout = __le32_to_cpu(sb->layout); | |
979 | info->array.md_minor = -1; | |
980 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
981 | info->array.utime = __le64_to_cpu(sb->utime); | |
982 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; | |
983 | info->array.state = | |
984 | (__le64_to_cpu(sb->resync_offset) == MaxSector) ? 1 : 0; | |
985 | ||
986 | super_offset = __le64_to_cpu(sb->super_offset); | |
987 | info->data_offset = __le64_to_cpu(sb->data_offset); | |
988 | info->component_size = __le64_to_cpu(sb->size); | |
989 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
990 | info->bitmap_offset = (int32_t)__le32_to_cpu(sb->bitmap_offset); | |
991 | if (__le32_to_cpu(bsb->nodes) > 1) | |
992 | info->array.state |= (1 << MD_SB_CLUSTERED); | |
993 | } else if (md_feature_any_ppl_on(sb->feature_map)) { | |
994 | info->ppl_offset = __le16_to_cpu(sb->ppl.offset); | |
995 | info->ppl_size = __le16_to_cpu(sb->ppl.size); | |
996 | info->ppl_sector = super_offset + info->ppl_offset; | |
997 | } | |
998 | ||
999 | info->disk.major = 0; | |
1000 | info->disk.minor = 0; | |
1001 | info->disk.number = __le32_to_cpu(sb->dev_number); | |
1002 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || | |
1003 | __le32_to_cpu(sb->dev_number) >= MAX_DEVS) | |
1004 | role = MD_DISK_ROLE_FAULTY; | |
1005 | else | |
1006 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
1007 | ||
1008 | if (info->array.level <= 0) | |
1009 | data_size = __le64_to_cpu(sb->data_size); | |
1010 | else | |
1011 | data_size = __le64_to_cpu(sb->size); | |
1012 | if (info->data_offset < super_offset) { | |
1013 | unsigned long long end; | |
1014 | info->space_before = info->data_offset; | |
1015 | end = super_offset; | |
1016 | ||
1017 | if (sb->bblog_offset && sb->bblog_size) { | |
1018 | unsigned long long bboffset = super_offset; | |
1019 | bboffset += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
1020 | if (bboffset < end) | |
1021 | end = bboffset; | |
1022 | } | |
1023 | ||
1024 | if (super_offset + info->bitmap_offset + info->ppl_offset < end) | |
1025 | end = super_offset + info->bitmap_offset + | |
1026 | info->ppl_offset; | |
1027 | ||
1028 | if (info->data_offset + data_size < end) | |
1029 | info->space_after = end - data_size - info->data_offset; | |
1030 | else | |
1031 | info->space_after = 0; | |
1032 | } else { | |
1033 | unsigned long long earliest; | |
1034 | earliest = super_offset + (32+4)*2; /* match kernel */ | |
1035 | if (info->bitmap_offset > 0) { | |
1036 | unsigned long long bmend = info->bitmap_offset; | |
1037 | unsigned long long size = calc_bitmap_size(bsb, 4096); | |
1038 | size /= 512; | |
1039 | bmend += size; | |
1040 | if (bmend > earliest) | |
1041 | earliest = bmend; | |
1042 | } else if (info->ppl_offset > 0) { | |
1043 | unsigned long long pplend; | |
1044 | ||
1045 | pplend = info->ppl_offset + info->ppl_size; | |
1046 | if (pplend > earliest) | |
1047 | earliest = pplend; | |
1048 | } | |
1049 | if (sb->bblog_offset && sb->bblog_size) { | |
1050 | unsigned long long bbend = super_offset; | |
1051 | bbend += (int32_t)__le32_to_cpu(sb->bblog_offset); | |
1052 | bbend += __le16_to_cpu(sb->bblog_size); | |
1053 | if (bbend > earliest) | |
1054 | earliest = bbend; | |
1055 | } | |
1056 | if (earliest < info->data_offset) | |
1057 | info->space_before = info->data_offset - earliest; | |
1058 | else | |
1059 | info->space_before = 0; | |
1060 | info->space_after = misc->device_size - data_size - | |
1061 | info->data_offset; | |
1062 | } | |
1063 | if (info->space_before == 0 && info->space_after == 0) { | |
1064 | /* It will look like we don't support data_offset changes, | |
1065 | * be we do - it's just that there is no room. | |
1066 | * A change that reduced the number of devices should | |
1067 | * still be allowed, so set the otherwise useless value of '1' | |
1068 | */ | |
1069 | info->space_after = 1; | |
1070 | } | |
1071 | ||
1072 | info->disk.raid_disk = -1; | |
1073 | switch(role) { | |
1074 | case MD_DISK_ROLE_SPARE: | |
1075 | /* spare: not active, not sync, not faulty */ | |
1076 | info->disk.state = 0; | |
1077 | break; | |
1078 | case MD_DISK_ROLE_FAULTY: | |
1079 | info->disk.state = (1 << MD_DISK_FAULTY); /* faulty */ | |
1080 | break; | |
1081 | case MD_DISK_ROLE_JOURNAL: | |
1082 | info->disk.state = (1 << MD_DISK_JOURNAL); | |
1083 | info->disk.raid_disk = role; | |
1084 | /* journal uses all 4kB blocks*/ | |
1085 | info->space_after = (misc->device_size - info->data_offset) % 8; | |
1086 | break; | |
1087 | default: | |
1088 | info->disk.state = 6; /* active and in sync */ | |
1089 | info->disk.raid_disk = role; | |
1090 | } | |
1091 | if (sb->devflags & WriteMostly1) | |
1092 | info->disk.state |= (1 << MD_DISK_WRITEMOSTLY); | |
1093 | if (sb->devflags & FailFast1) | |
1094 | info->disk.state |= (1 << MD_DISK_FAILFAST); | |
1095 | info->events = __le64_to_cpu(sb->events); | |
1096 | sprintf(info->text_version, "1.%d", st->minor_version); | |
1097 | info->safe_mode_delay = 200; | |
1098 | ||
1099 | memcpy(info->uuid, sb->set_uuid, 16); | |
1100 | ||
1101 | strncpy(info->name, sb->set_name, 32); | |
1102 | info->name[32] = 0; | |
1103 | ||
1104 | if ((__le32_to_cpu(sb->feature_map)&MD_FEATURE_REPLACEMENT)) { | |
1105 | info->disk.state &= ~(1 << MD_DISK_SYNC); | |
1106 | info->disk.state |= 1 << MD_DISK_REPLACEMENT; | |
1107 | } | |
1108 | ||
1109 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) | |
1110 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
1111 | else | |
1112 | info->recovery_start = MaxSector; | |
1113 | ||
1114 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { | |
1115 | info->reshape_active = 1; | |
1116 | if ((sb->feature_map & __le32_to_cpu(MD_FEATURE_NEW_OFFSET)) && | |
1117 | sb->new_offset != 0) | |
1118 | info->reshape_active |= RESHAPE_NO_BACKUP; | |
1119 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); | |
1120 | info->new_level = __le32_to_cpu(sb->new_level); | |
1121 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
1122 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
1123 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; | |
1124 | if (info->delta_disks < 0) | |
1125 | info->array.raid_disks -= info->delta_disks; | |
1126 | } else | |
1127 | info->reshape_active = 0; | |
1128 | ||
1129 | info->recovery_blocked = info->reshape_active; | |
1130 | ||
1131 | if (map) | |
1132 | for (i = 0; i < map_disks; i++) | |
1133 | map[i] = 0; | |
1134 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { | |
1135 | role = __le16_to_cpu(sb->dev_roles[i]); | |
1136 | if (/*role == MD_DISK_ROLE_SPARE || */role < (unsigned) info->array.raid_disks) { | |
1137 | working++; | |
1138 | if (map && role < map_disks) | |
1139 | map[role] = 1; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | info->array.working_disks = working; | |
1144 | ||
1145 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_JOURNAL)) { | |
1146 | info->journal_device_required = 1; | |
1147 | info->consistency_policy = CONSISTENCY_POLICY_JOURNAL; | |
1148 | } else if (md_feature_any_ppl_on(sb->feature_map)) { | |
1149 | info->consistency_policy = CONSISTENCY_POLICY_PPL; | |
1150 | } else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) { | |
1151 | info->consistency_policy = CONSISTENCY_POLICY_BITMAP; | |
1152 | } else if (info->array.level <= 0) { | |
1153 | info->consistency_policy = CONSISTENCY_POLICY_NONE; | |
1154 | } else { | |
1155 | info->consistency_policy = CONSISTENCY_POLICY_RESYNC; | |
1156 | } | |
1157 | ||
1158 | info->journal_clean = 0; | |
1159 | } | |
1160 | ||
1161 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) | |
1162 | { | |
1163 | struct mdinfo *info; | |
1164 | ||
1165 | if (subarray) | |
1166 | return NULL; | |
1167 | ||
1168 | info = xmalloc(sizeof(*info)); | |
1169 | getinfo_super1(st, info, NULL); | |
1170 | return info; | |
1171 | } | |
1172 | ||
1173 | static int update_super1(struct supertype *st, struct mdinfo *info, | |
1174 | enum update_opt update, char *devname, int verbose, | |
1175 | int uuid_set, char *homehost) | |
1176 | { | |
1177 | /* NOTE: for 'assemble' and 'force' we need to return non-zero | |
1178 | * if any change was made. For others, the return value is | |
1179 | * ignored. | |
1180 | */ | |
1181 | int rv = 0; | |
1182 | struct mdp_superblock_1 *sb = st->sb; | |
1183 | bitmap_super_t *bms = (bitmap_super_t *)(((char *)sb) + MAX_SB_SIZE); | |
1184 | ||
1185 | if (update == UOPT_HOMEHOST && homehost) { | |
1186 | /* | |
1187 | * Note that 'homehost' is special as it is really | |
1188 | * a "name" update. | |
1189 | */ | |
1190 | char *c; | |
1191 | update = UOPT_NAME; | |
1192 | c = strchr(sb->set_name, ':'); | |
1193 | if (c) | |
1194 | snprintf(info->name, sizeof(info->name), "%s", c + 1); | |
1195 | else | |
1196 | snprintf(info->name, sizeof(info->name), "%s", | |
1197 | sb->set_name); | |
1198 | } | |
1199 | ||
1200 | switch (update) { | |
1201 | case UOPT_NAME: { | |
1202 | int namelen; | |
1203 | ||
1204 | if (!info->name[0]) | |
1205 | snprintf(info->name, sizeof(info->name), "%d", info->array.md_minor); | |
1206 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
1207 | ||
1208 | namelen = strnlen(homehost, MD_NAME_MAX) + 1 + strnlen(info->name, MD_NAME_MAX); | |
1209 | if (homehost && | |
1210 | strchr(info->name, ':') == NULL && | |
1211 | namelen < MD_NAME_MAX) { | |
1212 | strcpy(sb->set_name, homehost); | |
1213 | strcat(sb->set_name, ":"); | |
1214 | strcat(sb->set_name, info->name); | |
1215 | } else { | |
1216 | namelen = min((int)strnlen(info->name, MD_NAME_MAX), | |
1217 | (int)sizeof(sb->set_name) - 1); | |
1218 | memcpy(sb->set_name, info->name, namelen); | |
1219 | memset(&sb->set_name[namelen], '\0', | |
1220 | sizeof(sb->set_name) - namelen); | |
1221 | } | |
1222 | break; | |
1223 | } | |
1224 | case UOPT_SPEC_FORCE_ONE: | |
1225 | /* Not enough devices for a working array, | |
1226 | * so bring this one up-to-date | |
1227 | */ | |
1228 | if (sb->events != __cpu_to_le64(info->events)) | |
1229 | rv = 1; | |
1230 | sb->events = __cpu_to_le64(info->events); | |
1231 | break; | |
1232 | case UOPT_SPEC_FORCE_ARRAY: | |
1233 | /* Degraded array and 'force' requests to | |
1234 | * maybe need to mark it 'clean'. | |
1235 | */ | |
1236 | switch(__le32_to_cpu(sb->level)) { | |
1237 | case 4: | |
1238 | case 5: | |
1239 | case 6: | |
1240 | /* need to force clean */ | |
1241 | if (sb->resync_offset != MaxSector) | |
1242 | rv = 1; | |
1243 | sb->resync_offset = MaxSector; | |
1244 | } | |
1245 | break; | |
1246 | case UOPT_SPEC_ASSEMBLE: { | |
1247 | int d = info->disk.number; | |
1248 | int want; | |
1249 | if (info->disk.state & (1<<MD_DISK_ACTIVE)) | |
1250 | want = info->disk.raid_disk; | |
1251 | else if (info->disk.state & (1<<MD_DISK_JOURNAL)) | |
1252 | want = MD_DISK_ROLE_JOURNAL; | |
1253 | else | |
1254 | want = MD_DISK_ROLE_SPARE; | |
1255 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { | |
1256 | sb->dev_roles[d] = __cpu_to_le16(want); | |
1257 | rv = 1; | |
1258 | } | |
1259 | if (info->reshape_active && | |
1260 | sb->feature_map & | |
1261 | __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
1262 | info->delta_disks >= 0 && | |
1263 | info->reshape_progress < | |
1264 | __le64_to_cpu(sb->reshape_position)) { | |
1265 | sb->reshape_position = | |
1266 | __cpu_to_le64(info->reshape_progress); | |
1267 | rv = 1; | |
1268 | } | |
1269 | if (info->reshape_active && | |
1270 | sb->feature_map & | |
1271 | __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
1272 | info->delta_disks < 0 && | |
1273 | info->reshape_progress > | |
1274 | __le64_to_cpu(sb->reshape_position)) { | |
1275 | sb->reshape_position = | |
1276 | __cpu_to_le64(info->reshape_progress); | |
1277 | rv = 1; | |
1278 | } | |
1279 | break; | |
1280 | } | |
1281 | case UOPT_SPEC_LINEAR_GROW_NEW: { | |
1282 | int i; | |
1283 | int fd; | |
1284 | int max = __le32_to_cpu(sb->max_dev); | |
1285 | ||
1286 | if (max > MAX_DEVS) | |
1287 | return -2; | |
1288 | ||
1289 | for (i = 0; i < max; i++) | |
1290 | if (__le16_to_cpu(sb->dev_roles[i]) >= | |
1291 | MD_DISK_ROLE_FAULTY) | |
1292 | break; | |
1293 | if (i != info->disk.number) | |
1294 | return -2; | |
1295 | sb->dev_number = __cpu_to_le32(i); | |
1296 | ||
1297 | if (i == max) | |
1298 | sb->max_dev = __cpu_to_le32(max + 1); | |
1299 | if (i > max) | |
1300 | return -2; | |
1301 | ||
1302 | random_uuid(sb->device_uuid); | |
1303 | ||
1304 | sb->dev_roles[i] = __cpu_to_le16(info->disk.raid_disk); | |
1305 | ||
1306 | fd = open(devname, O_RDONLY); | |
1307 | if (fd >= 0) { | |
1308 | unsigned long long ds; | |
1309 | get_dev_size(fd, devname, &ds); | |
1310 | close(fd); | |
1311 | ds >>= 9; | |
1312 | if (__le64_to_cpu(sb->super_offset) < | |
1313 | __le64_to_cpu(sb->data_offset)) { | |
1314 | sb->data_size = __cpu_to_le64( | |
1315 | ds - __le64_to_cpu(sb->data_offset)); | |
1316 | } else { | |
1317 | ds -= 8 * 2; | |
1318 | ds &= ~(unsigned long long)(4 * 2 - 1); | |
1319 | sb->super_offset = __cpu_to_le64(ds); | |
1320 | sb->data_size = __cpu_to_le64( | |
1321 | ds - __le64_to_cpu(sb->data_offset)); | |
1322 | } | |
1323 | } | |
1324 | break; | |
1325 | } | |
1326 | case UOPT_SPEC_LINEAR_GROW_UPDATE: { | |
1327 | int max = __le32_to_cpu(sb->max_dev); | |
1328 | int i = info->disk.number; | |
1329 | if (max > MAX_DEVS || i > MAX_DEVS) | |
1330 | return -2; | |
1331 | if (i > max) | |
1332 | return -2; | |
1333 | if (i == max) | |
1334 | sb->max_dev = __cpu_to_le32(max + 1); | |
1335 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); | |
1336 | sb->dev_roles[info->disk.number] = | |
1337 | __cpu_to_le16(info->disk.raid_disk); | |
1338 | break; | |
1339 | } | |
1340 | case UOPT_RESYNC: | |
1341 | /* make sure resync happens */ | |
1342 | sb->resync_offset = 0; | |
1343 | break; | |
1344 | case UOPT_UUID: | |
1345 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); | |
1346 | ||
1347 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET) | |
1348 | memcpy(bms->uuid, sb->set_uuid, 16); | |
1349 | break; | |
1350 | case UOPT_NO_BITMAP: | |
1351 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
1352 | if (bms->version == BITMAP_MAJOR_CLUSTERED && !IsBitmapDirty(devname)) | |
1353 | sb->resync_offset = MaxSector; | |
1354 | break; | |
1355 | case UOPT_BBL: { | |
1356 | /* only possible if there is room after the bitmap, or if | |
1357 | * there is no bitmap | |
1358 | */ | |
1359 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1360 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
1361 | long bitmap_offset = 0; | |
1362 | long bm_sectors = 0; | |
1363 | long space; | |
1364 | ||
1365 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1366 | bitmap_offset = (long)__le32_to_cpu(sb->bitmap_offset); | |
1367 | bm_sectors = calc_bitmap_size(bms, 4096) >> 9; | |
1368 | } else if (md_feature_any_ppl_on(sb->feature_map)) { | |
1369 | bitmap_offset = (long)__le16_to_cpu(sb->ppl.offset); | |
1370 | bm_sectors = (long)__le16_to_cpu(sb->ppl.size); | |
1371 | } | |
1372 | ||
1373 | if (sb_offset < data_offset) { | |
1374 | /* | |
1375 | * 1.1 or 1.2. Put bbl after bitmap leaving | |
1376 | * at least 32K | |
1377 | */ | |
1378 | long bb_offset; | |
1379 | bb_offset = sb_offset + 8; | |
1380 | if (bm_sectors && bitmap_offset > 0) | |
1381 | bb_offset = bitmap_offset + bm_sectors; | |
1382 | while (bb_offset < (long)sb_offset + 8 + 32*2 && | |
1383 | bb_offset + 8+8 <= (long)data_offset) | |
1384 | bb_offset += 8; | |
1385 | if (bb_offset + 8 <= (long)data_offset) { | |
1386 | sb->bblog_size = __cpu_to_le16(8); | |
1387 | sb->bblog_offset = __cpu_to_le32(bb_offset); | |
1388 | } | |
1389 | } else { | |
1390 | if (bm_sectors && bitmap_offset < 0) | |
1391 | space = -bitmap_offset - bm_sectors; | |
1392 | else | |
1393 | space = sb_offset - data_offset - | |
1394 | __le64_to_cpu(sb->data_size); | |
1395 | if (space >= 8) { | |
1396 | sb->bblog_size = __cpu_to_le16(8); | |
1397 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
1398 | } | |
1399 | } | |
1400 | break; | |
1401 | } | |
1402 | case UOPT_NO_BBL: | |
1403 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS)) | |
1404 | pr_err("Cannot remove active bbl from %s\n",devname); | |
1405 | else { | |
1406 | sb->bblog_size = 0; | |
1407 | sb->bblog_shift = 0; | |
1408 | sb->bblog_offset = 0; | |
1409 | } | |
1410 | break; | |
1411 | case UOPT_FORCE_NO_BBL: | |
1412 | sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS); | |
1413 | sb->bblog_size = 0; | |
1414 | sb->bblog_shift = 0; | |
1415 | sb->bblog_offset = 0; | |
1416 | break; | |
1417 | case UOPT_PPL: { | |
1418 | unsigned long long sb_offset = __le64_to_cpu(sb->super_offset); | |
1419 | unsigned long long data_offset = __le64_to_cpu(sb->data_offset); | |
1420 | unsigned long long data_size = __le64_to_cpu(sb->data_size); | |
1421 | long bb_offset = __le32_to_cpu(sb->bblog_offset); | |
1422 | int space; | |
1423 | int offset; | |
1424 | ||
1425 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1426 | pr_err("Cannot add PPL to array with bitmap\n"); | |
1427 | return -2; | |
1428 | } | |
1429 | ||
1430 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_JOURNAL)) { | |
1431 | pr_err("Cannot add PPL to array with journal\n"); | |
1432 | return -2; | |
1433 | } | |
1434 | ||
1435 | if (sb_offset < data_offset) { | |
1436 | if (bb_offset) | |
1437 | space = bb_offset - 8; | |
1438 | else | |
1439 | space = data_offset - sb_offset - 8; | |
1440 | offset = 8; | |
1441 | } else { | |
1442 | offset = -(sb_offset - data_offset - data_size); | |
1443 | if (offset < INT16_MIN) | |
1444 | offset = INT16_MIN; | |
1445 | space = -(offset - bb_offset); | |
1446 | } | |
1447 | ||
1448 | if (space < (PPL_HEADER_SIZE >> 9) + 8) { | |
1449 | pr_err("Not enough space to add ppl\n"); | |
1450 | return -2; | |
1451 | } | |
1452 | ||
1453 | if (space >= (MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9)) { | |
1454 | space = (MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9); | |
1455 | } else { | |
1456 | int optimal_space = choose_ppl_space( | |
1457 | __le32_to_cpu(sb->chunksize)); | |
1458 | if (space > optimal_space) | |
1459 | space = optimal_space; | |
1460 | if (space > UINT16_MAX) | |
1461 | space = UINT16_MAX; | |
1462 | } | |
1463 | ||
1464 | sb->ppl.offset = __cpu_to_le16(offset); | |
1465 | sb->ppl.size = __cpu_to_le16(space); | |
1466 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL); | |
1467 | break; | |
1468 | } | |
1469 | case UOPT_NO_PPL: | |
1470 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_PPL | | |
1471 | MD_FEATURE_MUTLIPLE_PPLS); | |
1472 | break; | |
1473 | case UOPT_DEVICESIZE: | |
1474 | if (__le64_to_cpu(sb->super_offset) >= | |
1475 | __le64_to_cpu(sb->data_offset)) | |
1476 | break; | |
1477 | /* | |
1478 | * set data_size to device size less data_offset | |
1479 | */ | |
1480 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
1481 | (st->sb + MAX_SB_SIZE + BM_SUPER_SIZE); | |
1482 | sb->data_size = __cpu_to_le64( | |
1483 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
1484 | break; | |
1485 | case UOPT_SPEC_REVERT_RESHAPE_NOBACKUP: | |
1486 | case UOPT_REVERT_RESHAPE: | |
1487 | rv = -2; | |
1488 | if (!(sb->feature_map & | |
1489 | __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE))) | |
1490 | pr_err("No active reshape to revert on %s\n", | |
1491 | devname); | |
1492 | else { | |
1493 | __u32 temp; | |
1494 | unsigned long long reshape_sectors; | |
1495 | long reshape_chunk; | |
1496 | rv = 0; | |
1497 | /* If the reshape hasn't started, just stop it. | |
1498 | * It is conceivable that a stripe was modified but | |
1499 | * the metadata not updated. In that case the backup | |
1500 | * should have been used to get passed the critical stage. | |
1501 | * If that couldn't happen, the "-nobackup" version | |
1502 | * will be used. | |
1503 | */ | |
1504 | if (update == UOPT_SPEC_REVERT_RESHAPE_NOBACKUP && | |
1505 | sb->reshape_position == 0 && | |
1506 | (__le32_to_cpu(sb->delta_disks) > 0 || | |
1507 | (__le32_to_cpu(sb->delta_disks) == 0 && | |
1508 | !(sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS))))) { | |
1509 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE); | |
1510 | sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
1511 | __le32_to_cpu(sb->delta_disks)); | |
1512 | sb->delta_disks = 0; | |
1513 | goto done; | |
1514 | } | |
1515 | /* reshape_position is a little messy. | |
1516 | * Its value must be a multiple of the larger | |
1517 | * chunk size, and of the "after" data disks. | |
1518 | * So when reverting we need to change it to | |
1519 | * be a multiple of the new "after" data disks, | |
1520 | * which is the old "before". | |
1521 | * If it isn't already a multiple of 'before', | |
1522 | * the only thing we could do would be | |
1523 | * copy some block around on the disks, which | |
1524 | * is easy to get wrong. | |
1525 | * So we reject a revert-reshape unless the | |
1526 | * alignment is good. | |
1527 | */ | |
1528 | if (is_level456(__le32_to_cpu(sb->level))) { | |
1529 | reshape_sectors = | |
1530 | __le64_to_cpu(sb->reshape_position); | |
1531 | reshape_chunk = __le32_to_cpu(sb->new_chunk); | |
1532 | reshape_chunk *= __le32_to_cpu(sb->raid_disks) - | |
1533 | __le32_to_cpu(sb->delta_disks) - | |
1534 | (__le32_to_cpu(sb->level)==6 ? 2 : 1); | |
1535 | if (reshape_sectors % reshape_chunk) { | |
1536 | pr_err("Reshape position is not suitably aligned.\n"); | |
1537 | pr_err("Try normal assembly and stop again\n"); | |
1538 | return -2; | |
1539 | } | |
1540 | } | |
1541 | sb->raid_disks = | |
1542 | __cpu_to_le32(__le32_to_cpu(sb->raid_disks) - | |
1543 | __le32_to_cpu(sb->delta_disks)); | |
1544 | if (sb->delta_disks == 0) | |
1545 | sb->feature_map ^= __cpu_to_le32(MD_FEATURE_RESHAPE_BACKWARDS); | |
1546 | else | |
1547 | sb->delta_disks = __cpu_to_le32(-__le32_to_cpu(sb->delta_disks)); | |
1548 | ||
1549 | temp = sb->new_layout; | |
1550 | sb->new_layout = sb->layout; | |
1551 | sb->layout = temp; | |
1552 | ||
1553 | temp = sb->new_chunk; | |
1554 | sb->new_chunk = sb->chunksize; | |
1555 | sb->chunksize = temp; | |
1556 | ||
1557 | if (sb->feature_map & | |
1558 | __cpu_to_le32(MD_FEATURE_NEW_OFFSET)) { | |
1559 | long offset_delta = | |
1560 | (int32_t)__le32_to_cpu(sb->new_offset); | |
1561 | sb->data_offset = __cpu_to_le64(__le64_to_cpu(sb->data_offset) + offset_delta); | |
1562 | sb->new_offset = __cpu_to_le32(-offset_delta); | |
1563 | sb->data_size = __cpu_to_le64(__le64_to_cpu(sb->data_size) - offset_delta); | |
1564 | } | |
1565 | done:; | |
1566 | } | |
1567 | break; | |
1568 | case UOPT_SPEC__RESHAPE_PROGRESS: | |
1569 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
1570 | break; | |
1571 | case UOPT_SPEC_WRITEMOSTLY: | |
1572 | sb->devflags |= WriteMostly1; | |
1573 | break; | |
1574 | case UOPT_SPEC_READWRITE: | |
1575 | sb->devflags &= ~WriteMostly1; | |
1576 | break; | |
1577 | case UOPT_SPEC_FAILFAST: | |
1578 | sb->devflags |= FailFast1; | |
1579 | break; | |
1580 | case UOPT_SPEC_NOFAILFAST: | |
1581 | sb->devflags &= ~FailFast1; | |
1582 | break; | |
1583 | case UOPT_LAYOUT_ORIGINAL: | |
1584 | case UOPT_LAYOUT_ALTERNATE: | |
1585 | case UOPT_LAYOUT_UNSPECIFIED: | |
1586 | if (__le32_to_cpu(sb->level) != 0) { | |
1587 | pr_err("%s: %s only supported for RAID0\n", | |
1588 | devname ?: "", map_num(update_options, update)); | |
1589 | rv = -1; | |
1590 | } else if (update == UOPT_LAYOUT_UNSPECIFIED) { | |
1591 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_RAID0_LAYOUT); | |
1592 | sb->layout = 0; | |
1593 | } else { | |
1594 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_RAID0_LAYOUT); | |
1595 | sb->layout = __cpu_to_le32(update == UOPT_LAYOUT_ORIGINAL ? 1 : 2); | |
1596 | } | |
1597 | break; | |
1598 | default: | |
1599 | rv = -1; | |
1600 | } | |
1601 | ||
1602 | sb->sb_csum = calc_sb_1_csum(sb); | |
1603 | ||
1604 | return rv; | |
1605 | } | |
1606 | ||
1607 | static int init_super1(struct supertype *st, mdu_array_info_t *info, | |
1608 | struct shape *s, char *name, char *homehost, | |
1609 | int *uuid, unsigned long long data_offset) | |
1610 | { | |
1611 | struct mdp_superblock_1 *sb; | |
1612 | int spares; | |
1613 | char defname[10]; | |
1614 | int sbsize; | |
1615 | ||
1616 | if (posix_memalign((void **)&sb, 4096, SUPER1_SIZE) != 0) { | |
1617 | pr_err("could not allocate superblock\n"); | |
1618 | return 0; | |
1619 | } | |
1620 | memset(sb, 0, SUPER1_SIZE); | |
1621 | ||
1622 | st->sb = sb; | |
1623 | if (info == NULL) { | |
1624 | /* zeroing superblock */ | |
1625 | return 0; | |
1626 | } | |
1627 | ||
1628 | spares = info->working_disks - info->active_disks; | |
1629 | if (info->raid_disks + spares > MAX_DEVS) { | |
1630 | pr_err("too many devices requested: %d+%d > %d\n", | |
1631 | info->raid_disks , spares, MAX_DEVS); | |
1632 | return 0; | |
1633 | } | |
1634 | ||
1635 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); | |
1636 | sb->major_version = __cpu_to_le32(1); | |
1637 | sb->feature_map = 0; | |
1638 | sb->pad0 = 0; | |
1639 | ||
1640 | if (uuid) | |
1641 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
1642 | else | |
1643 | random_uuid(sb->set_uuid);; | |
1644 | ||
1645 | if (name == NULL || *name == 0) { | |
1646 | sprintf(defname, "%d", info->md_minor); | |
1647 | name = defname; | |
1648 | } | |
1649 | if (homehost && | |
1650 | strchr(name, ':') == NULL && | |
1651 | strlen(homehost) + 1 + strlen(name) < 32) { | |
1652 | strcpy(sb->set_name, homehost); | |
1653 | strcat(sb->set_name, ":"); | |
1654 | strcat(sb->set_name, name); | |
1655 | } else { | |
1656 | int namelen; | |
1657 | ||
1658 | namelen = min((int)strlen(name), | |
1659 | (int)sizeof(sb->set_name) - 1); | |
1660 | memcpy(sb->set_name, name, namelen); | |
1661 | memset(&sb->set_name[namelen], '\0', | |
1662 | sizeof(sb->set_name) - namelen); | |
1663 | } | |
1664 | ||
1665 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
1666 | sb->level = __cpu_to_le32(info->level); | |
1667 | sb->layout = __cpu_to_le32(info->layout); | |
1668 | sb->size = __cpu_to_le64(s->size*2ULL); | |
1669 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); | |
1670 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
1671 | ||
1672 | sb->data_offset = __cpu_to_le64(data_offset); | |
1673 | sb->data_size = __cpu_to_le64(0); | |
1674 | sb->super_offset = __cpu_to_le64(0); | |
1675 | sb->recovery_offset = __cpu_to_le64(0); | |
1676 | ||
1677 | sb->utime = sb->ctime; | |
1678 | sb->events = __cpu_to_le64(1); | |
1679 | if (info->state & (1<<MD_SB_CLEAN)) | |
1680 | sb->resync_offset = MaxSector; | |
1681 | else | |
1682 | sb->resync_offset = 0; | |
1683 | sbsize = sizeof(struct mdp_superblock_1) + | |
1684 | 2 * (info->raid_disks + spares); | |
1685 | sbsize = ROUND_UP(sbsize, 512); | |
1686 | sb->max_dev = | |
1687 | __cpu_to_le32((sbsize - sizeof(struct mdp_superblock_1)) / 2); | |
1688 | ||
1689 | memset(sb->dev_roles, 0xff, | |
1690 | MAX_SB_SIZE - sizeof(struct mdp_superblock_1)); | |
1691 | ||
1692 | if (s->consistency_policy == CONSISTENCY_POLICY_PPL) | |
1693 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL); | |
1694 | ||
1695 | return 1; | |
1696 | } | |
1697 | ||
1698 | struct devinfo { | |
1699 | int fd; | |
1700 | char *devname; | |
1701 | long long data_offset; | |
1702 | unsigned long long dev_size; | |
1703 | mdu_disk_info_t disk; | |
1704 | struct devinfo *next; | |
1705 | }; | |
1706 | ||
1707 | /* Add a device to the superblock being created */ | |
1708 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, | |
1709 | int fd, char *devname, unsigned long long data_offset) | |
1710 | { | |
1711 | struct mdp_superblock_1 *sb = st->sb; | |
1712 | __u16 *rp = sb->dev_roles + dk->number; | |
1713 | struct devinfo *di, **dip; | |
1714 | int dk_state; | |
1715 | ||
1716 | dk_state = dk->state & ~(1<<MD_DISK_FAILFAST); | |
1717 | if ((dk_state & (1<<MD_DISK_ACTIVE)) && | |
1718 | (dk_state & (1<<MD_DISK_SYNC)))/* active, sync */ | |
1719 | *rp = __cpu_to_le16(dk->raid_disk); | |
1720 | else if (dk_state & (1<<MD_DISK_JOURNAL)) | |
1721 | *rp = MD_DISK_ROLE_JOURNAL; | |
1722 | else if ((dk_state & ~(1<<MD_DISK_ACTIVE)) == 0) | |
1723 | /* active or idle -> spare */ | |
1724 | *rp = MD_DISK_ROLE_SPARE; | |
1725 | else | |
1726 | *rp = MD_DISK_ROLE_FAULTY; | |
1727 | ||
1728 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && | |
1729 | __le32_to_cpu(sb->max_dev) < MAX_DEVS) | |
1730 | sb->max_dev = __cpu_to_le32(dk->number + 1); | |
1731 | ||
1732 | sb->dev_number = __cpu_to_le32(dk->number); | |
1733 | sb->devflags = 0; /* don't copy another disks flags */ | |
1734 | sb->sb_csum = calc_sb_1_csum(sb); | |
1735 | ||
1736 | dip = (struct devinfo **)&st->info; | |
1737 | while (*dip) | |
1738 | dip = &(*dip)->next; | |
1739 | di = xmalloc(sizeof(struct devinfo)); | |
1740 | di->fd = fd; | |
1741 | di->devname = devname; | |
1742 | di->disk = *dk; | |
1743 | di->data_offset = data_offset; | |
1744 | ||
1745 | if (is_fd_valid(fd)) | |
1746 | get_dev_size(fd, NULL, &di->dev_size); | |
1747 | ||
1748 | di->next = NULL; | |
1749 | *dip = di; | |
1750 | ||
1751 | return 0; | |
1752 | } | |
1753 | ||
1754 | static int locate_bitmap1(struct supertype *st, int fd, int node_num); | |
1755 | ||
1756 | static int store_super1(struct supertype *st, int fd) | |
1757 | { | |
1758 | struct mdp_superblock_1 *sb = st->sb; | |
1759 | unsigned long long sb_offset; | |
1760 | struct align_fd afd; | |
1761 | int sbsize; | |
1762 | unsigned long long dsize; | |
1763 | ||
1764 | if (!get_dev_size(fd, NULL, &dsize)) | |
1765 | return 1; | |
1766 | ||
1767 | dsize >>= 9; | |
1768 | ||
1769 | if (dsize < 24) | |
1770 | return 2; | |
1771 | ||
1772 | init_afd(&afd, fd); | |
1773 | ||
1774 | /* | |
1775 | * Calculate the position of the superblock. | |
1776 | * It is always aligned to a 4K boundary and | |
1777 | * depending on minor_version, it can be: | |
1778 | * 0: At least 8K, but less than 12K, from end of device | |
1779 | * 1: At start of device | |
1780 | * 2: 4K from start of device. | |
1781 | */ | |
1782 | switch(st->minor_version) { | |
1783 | case 0: | |
1784 | sb_offset = dsize; | |
1785 | sb_offset -= 8*2; | |
1786 | sb_offset &= ~(4*2-1); | |
1787 | break; | |
1788 | case 1: | |
1789 | sb_offset = 0; | |
1790 | break; | |
1791 | case 2: | |
1792 | sb_offset = 4*2; | |
1793 | break; | |
1794 | default: | |
1795 | return -EINVAL; | |
1796 | } | |
1797 | ||
1798 | if (sb_offset != __le64_to_cpu(sb->super_offset) && | |
1799 | 0 != __le64_to_cpu(sb->super_offset) | |
1800 | ) { | |
1801 | pr_err("internal error - sb_offset is wrong\n"); | |
1802 | abort(); | |
1803 | } | |
1804 | ||
1805 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) | |
1806 | return 3; | |
1807 | ||
1808 | sbsize = ROUND_UP(sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev), 512); | |
1809 | ||
1810 | if (awrite(&afd, sb, sbsize) != sbsize) | |
1811 | return 4; | |
1812 | ||
1813 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
1814 | struct bitmap_super_s *bm; | |
1815 | bm = (struct bitmap_super_s *)(((char *)sb) + MAX_SB_SIZE); | |
1816 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { | |
1817 | locate_bitmap1(st, fd, 0); | |
1818 | if (awrite(&afd, bm, sizeof(*bm)) != sizeof(*bm)) | |
1819 | return 5; | |
1820 | } | |
1821 | } | |
1822 | fsync(fd); | |
1823 | ||
1824 | return 0; | |
1825 | } | |
1826 | ||
1827 | static int load_super1(struct supertype *st, int fd, char *devname); | |
1828 | ||
1829 | static unsigned long choose_bm_space(unsigned long devsize) | |
1830 | { | |
1831 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1832 | * if bigger than 200Gig, save 128k | |
1833 | * NOTE: result must be multiple of 4K else bad things happen | |
1834 | * on 4K-sector devices. | |
1835 | */ | |
1836 | if (devsize < 64*2) | |
1837 | return 0; | |
1838 | if (devsize - 64*2 >= 200*1024*1024*2) | |
1839 | return 128*2; | |
1840 | if (devsize - 4*2 > 8*1024*1024*2) | |
1841 | return 64*2; | |
1842 | return 4*2; | |
1843 | } | |
1844 | ||
1845 | static void free_super1(struct supertype *st); | |
1846 | ||
1847 | __u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len); | |
1848 | ||
1849 | static int write_init_ppl1(struct supertype *st, struct mdinfo *info, int fd) | |
1850 | { | |
1851 | struct mdp_superblock_1 *sb = st->sb; | |
1852 | void *buf; | |
1853 | struct ppl_header *ppl_hdr; | |
1854 | int ret; | |
1855 | ||
1856 | /* first clear entire ppl space */ | |
1857 | ret = zero_disk_range(fd, info->ppl_sector, info->ppl_size); | |
1858 | if (ret) | |
1859 | return ret; | |
1860 | ||
1861 | ret = posix_memalign(&buf, 4096, PPL_HEADER_SIZE); | |
1862 | if (ret) { | |
1863 | pr_err("Failed to allocate PPL header buffer\n"); | |
1864 | return ret; | |
1865 | } | |
1866 | ||
1867 | memset(buf, 0, PPL_HEADER_SIZE); | |
1868 | ppl_hdr = buf; | |
1869 | memset(ppl_hdr->reserved, 0xff, PPL_HDR_RESERVED); | |
1870 | ppl_hdr->signature = __cpu_to_le32(~crc32c_le(~0, sb->set_uuid, | |
1871 | sizeof(sb->set_uuid))); | |
1872 | ppl_hdr->checksum = __cpu_to_le32(~crc32c_le(~0, buf, PPL_HEADER_SIZE)); | |
1873 | ||
1874 | if (lseek64(fd, info->ppl_sector * 512, SEEK_SET) < 0) { | |
1875 | ret = errno; | |
1876 | perror("Failed to seek to PPL header location"); | |
1877 | } | |
1878 | ||
1879 | if (!ret && write(fd, buf, PPL_HEADER_SIZE) != PPL_HEADER_SIZE) { | |
1880 | ret = errno; | |
1881 | perror("Write PPL header failed"); | |
1882 | } | |
1883 | ||
1884 | if (!ret) | |
1885 | fsync(fd); | |
1886 | ||
1887 | free(buf); | |
1888 | return ret; | |
1889 | } | |
1890 | ||
1891 | #define META_BLOCK_SIZE 4096 | |
1892 | ||
1893 | static int write_empty_r5l_meta_block(struct supertype *st, int fd) | |
1894 | { | |
1895 | struct r5l_meta_block *mb; | |
1896 | struct mdp_superblock_1 *sb = st->sb; | |
1897 | struct align_fd afd; | |
1898 | __u32 crc; | |
1899 | ||
1900 | init_afd(&afd, fd); | |
1901 | ||
1902 | if (posix_memalign((void **)&mb, 4096, META_BLOCK_SIZE) != 0) { | |
1903 | pr_err("Could not allocate memory for the meta block.\n"); | |
1904 | return 1; | |
1905 | } | |
1906 | ||
1907 | memset(mb, 0, META_BLOCK_SIZE); | |
1908 | ||
1909 | mb->magic = __cpu_to_le32(R5LOG_MAGIC); | |
1910 | mb->version = R5LOG_VERSION; | |
1911 | mb->meta_size = __cpu_to_le32(sizeof(struct r5l_meta_block)); | |
1912 | mb->seq = __cpu_to_le64(random32()); | |
1913 | mb->position = __cpu_to_le64(0); | |
1914 | ||
1915 | crc = crc32c_le(0xffffffff, sb->set_uuid, sizeof(sb->set_uuid)); | |
1916 | crc = crc32c_le(crc, (void *)mb, META_BLOCK_SIZE); | |
1917 | mb->checksum = crc; | |
1918 | ||
1919 | if (lseek64(fd, __le64_to_cpu(sb->data_offset) * 512, 0) < 0LL) { | |
1920 | pr_err("cannot seek to offset of the meta block\n"); | |
1921 | goto fail_to_write; | |
1922 | } | |
1923 | ||
1924 | if (awrite(&afd, mb, META_BLOCK_SIZE) != META_BLOCK_SIZE) { | |
1925 | pr_err("failed to store write the meta block \n"); | |
1926 | goto fail_to_write; | |
1927 | } | |
1928 | fsync(fd); | |
1929 | ||
1930 | free(mb); | |
1931 | return 0; | |
1932 | ||
1933 | fail_to_write: | |
1934 | free(mb); | |
1935 | return 1; | |
1936 | } | |
1937 | ||
1938 | static bool has_raid0_layout(struct mdp_superblock_1 *sb) | |
1939 | { | |
1940 | if (sb->level == 0 && sb->layout != 0) | |
1941 | return true; | |
1942 | else | |
1943 | return false; | |
1944 | } | |
1945 | ||
1946 | static int write_init_super1(struct supertype *st) | |
1947 | { | |
1948 | struct mdp_superblock_1 *sb = st->sb; | |
1949 | struct supertype *refst; | |
1950 | int rv = 0; | |
1951 | unsigned long long bm_space; | |
1952 | struct devinfo *di; | |
1953 | unsigned long long dsize, array_size; | |
1954 | unsigned long long sb_offset; | |
1955 | unsigned long long data_offset; | |
1956 | long bm_offset; | |
1957 | bool raid0_need_layout = false; | |
1958 | ||
1959 | /* Since linux kernel v5.4, raid0 always has a layout */ | |
1960 | if (has_raid0_layout(sb) && get_linux_version() >= 5004000) | |
1961 | raid0_need_layout = true; | |
1962 | ||
1963 | for (di = st->info; di; di = di->next) { | |
1964 | if (di->disk.state & (1 << MD_DISK_JOURNAL)) | |
1965 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_JOURNAL); | |
1966 | if (has_raid0_layout(sb) && !raid0_need_layout) { | |
1967 | ||
1968 | struct devinfo *di2 = st->info; | |
1969 | unsigned long long s1, s2; | |
1970 | s1 = di->dev_size; | |
1971 | if (di->data_offset != INVALID_SECTORS) | |
1972 | s1 -= di->data_offset; | |
1973 | s1 /= __le32_to_cpu(sb->chunksize); | |
1974 | s2 = di2->dev_size; | |
1975 | if (di2->data_offset != INVALID_SECTORS) | |
1976 | s2 -= di2->data_offset; | |
1977 | s2 /= __le32_to_cpu(sb->chunksize); | |
1978 | if (s1 != s2) | |
1979 | raid0_need_layout = true; | |
1980 | } | |
1981 | } | |
1982 | ||
1983 | for (di = st->info; di; di = di->next) { | |
1984 | if (di->disk.state & (1 << MD_DISK_FAULTY)) | |
1985 | continue; | |
1986 | if (di->fd < 0) | |
1987 | continue; | |
1988 | ||
1989 | while (Kill(di->devname, NULL, 0, -1, 1) == 0) | |
1990 | ; | |
1991 | ||
1992 | sb->dev_number = __cpu_to_le32(di->disk.number); | |
1993 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
1994 | sb->devflags |= WriteMostly1; | |
1995 | else | |
1996 | sb->devflags &= ~WriteMostly1; | |
1997 | if (di->disk.state & (1<<MD_DISK_FAILFAST)) | |
1998 | sb->devflags |= FailFast1; | |
1999 | else | |
2000 | sb->devflags &= ~FailFast1; | |
2001 | ||
2002 | random_uuid(sb->device_uuid); | |
2003 | ||
2004 | if (!(di->disk.state & (1<<MD_DISK_JOURNAL))) | |
2005 | sb->events = 0; | |
2006 | ||
2007 | refst = dup_super(st); | |
2008 | if (load_super1(refst, di->fd, NULL)==0) { | |
2009 | struct mdp_superblock_1 *refsb = refst->sb; | |
2010 | ||
2011 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
2012 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
2013 | /* same array, so preserve events and | |
2014 | * dev_number */ | |
2015 | sb->events = refsb->events; | |
2016 | } | |
2017 | free_super1(refst); | |
2018 | } | |
2019 | free(refst); | |
2020 | ||
2021 | if (!get_dev_size(di->fd, NULL, &dsize)) { | |
2022 | rv = 1; | |
2023 | goto error_out; | |
2024 | } | |
2025 | dsize >>= 9; | |
2026 | ||
2027 | if (dsize < 24) { | |
2028 | close(di->fd); | |
2029 | rv = 2; | |
2030 | goto error_out; | |
2031 | } | |
2032 | ||
2033 | /* | |
2034 | * Calculate the position of the superblock. | |
2035 | * It is always aligned to a 4K boundary and | |
2036 | * depending on minor_version, it can be: | |
2037 | * 0: At least 8K, but less than 12K, from end of device | |
2038 | * 1: At start of device | |
2039 | * 2: 4K from start of device. | |
2040 | * data_offset has already been set. | |
2041 | */ | |
2042 | array_size = __le64_to_cpu(sb->size); | |
2043 | ||
2044 | /* work out how much space we left for a bitmap */ | |
2045 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { | |
2046 | bitmap_super_t *bms = (bitmap_super_t *) | |
2047 | (((char *)sb) + MAX_SB_SIZE); | |
2048 | bm_space = calc_bitmap_size(bms, 4096) >> 9; | |
2049 | bm_offset = (long)__le32_to_cpu(sb->bitmap_offset); | |
2050 | } else if (md_feature_any_ppl_on(sb->feature_map)) { | |
2051 | bm_space = MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9; | |
2052 | if (st->minor_version == 0) | |
2053 | bm_offset = -bm_space - 8; | |
2054 | else | |
2055 | bm_offset = 8; | |
2056 | sb->ppl.offset = __cpu_to_le16(bm_offset); | |
2057 | sb->ppl.size = __cpu_to_le16(bm_space); | |
2058 | } else { | |
2059 | bm_space = choose_bm_space(array_size); | |
2060 | bm_offset = 8; | |
2061 | } | |
2062 | ||
2063 | data_offset = di->data_offset; | |
2064 | if (data_offset == INVALID_SECTORS) | |
2065 | data_offset = st->data_offset; | |
2066 | switch(st->minor_version) { | |
2067 | case 0: | |
2068 | /* Add 8 sectors for bad block log */ | |
2069 | bm_space += 8; | |
2070 | if (data_offset == INVALID_SECTORS) | |
2071 | data_offset = 0; | |
2072 | sb_offset = dsize; | |
2073 | sb_offset -= 8*2; | |
2074 | sb_offset &= ~(4*2-1); | |
2075 | sb->data_offset = __cpu_to_le64(data_offset); | |
2076 | sb->super_offset = __cpu_to_le64(sb_offset); | |
2077 | if (sb_offset < array_size + bm_space) | |
2078 | bm_space = sb_offset - array_size; | |
2079 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); | |
2080 | if (bm_space >= 8) { | |
2081 | sb->bblog_size = __cpu_to_le16(8); | |
2082 | sb->bblog_offset = __cpu_to_le32((unsigned)-8); | |
2083 | } | |
2084 | break; | |
2085 | case 1: | |
2086 | case 2: | |
2087 | sb_offset = st->minor_version == 2 ? 8 : 0; | |
2088 | sb->super_offset = __cpu_to_le64(sb_offset); | |
2089 | if (data_offset == INVALID_SECTORS) | |
2090 | data_offset = sb_offset + 16; | |
2091 | ||
2092 | sb->data_offset = __cpu_to_le64(data_offset); | |
2093 | sb->data_size = __cpu_to_le64(dsize - data_offset); | |
2094 | if (data_offset >= sb_offset+bm_offset+bm_space+8) { | |
2095 | sb->bblog_size = __cpu_to_le16(8); | |
2096 | sb->bblog_offset = __cpu_to_le32(bm_offset + | |
2097 | bm_space); | |
2098 | } else if (data_offset >= sb_offset + 16) { | |
2099 | sb->bblog_size = __cpu_to_le16(8); | |
2100 | /* '8' sectors for the bblog, and 'sb_offset' | |
2101 | * because we want offset from superblock, not | |
2102 | * start of device. | |
2103 | */ | |
2104 | sb->bblog_offset = __cpu_to_le32(data_offset - | |
2105 | 8 - sb_offset); | |
2106 | } | |
2107 | break; | |
2108 | default: | |
2109 | pr_err("Failed to write invalid metadata format 1.%i to %s\n", | |
2110 | st->minor_version, di->devname); | |
2111 | rv = -EINVAL; | |
2112 | goto out; | |
2113 | } | |
2114 | /* | |
2115 | * Disable badblock log on clusters, or when | |
2116 | * explicitly requested | |
2117 | */ | |
2118 | if (st->nodes > 0 || conf_get_create_info()->bblist == 0) { | |
2119 | sb->bblog_size = 0; | |
2120 | sb->bblog_offset = 0; | |
2121 | } | |
2122 | ||
2123 | /* RAID0 needs a layout if devices aren't all the same size */ | |
2124 | if (raid0_need_layout) | |
2125 | sb->feature_map |= __cpu_to_le32(MD_FEATURE_RAID0_LAYOUT); | |
2126 | ||
2127 | sb->sb_csum = calc_sb_1_csum(sb); | |
2128 | rv = store_super1(st, di->fd); | |
2129 | ||
2130 | if (rv == 0 && (di->disk.state & (1 << MD_DISK_JOURNAL))) { | |
2131 | rv = write_empty_r5l_meta_block(st, di->fd); | |
2132 | if (rv) | |
2133 | goto error_out; | |
2134 | } | |
2135 | ||
2136 | if (rv == 0 && | |
2137 | (__le32_to_cpu(sb->feature_map) & | |
2138 | MD_FEATURE_BITMAP_OFFSET)) { | |
2139 | rv = st->ss->write_bitmap(st, di->fd, NodeNumUpdate); | |
2140 | } else if (rv == 0 && | |
2141 | md_feature_any_ppl_on(sb->feature_map)) { | |
2142 | struct mdinfo info; | |
2143 | ||
2144 | st->ss->getinfo_super(st, &info, NULL); | |
2145 | rv = st->ss->write_init_ppl(st, &info, di->fd); | |
2146 | } | |
2147 | ||
2148 | close(di->fd); | |
2149 | di->fd = -1; | |
2150 | if (rv) | |
2151 | goto error_out; | |
2152 | } | |
2153 | error_out: | |
2154 | if (rv) | |
2155 | pr_err("Failed to write metadata to %s\n", di->devname); | |
2156 | out: | |
2157 | return rv; | |
2158 | } | |
2159 | ||
2160 | static int compare_super1(struct supertype *st, struct supertype *tst, | |
2161 | int verbose) | |
2162 | { | |
2163 | /* | |
2164 | * return: | |
2165 | * 0 same, or first was empty, and second was copied | |
2166 | * 1 second had wrong number | |
2167 | * 2 wrong uuid | |
2168 | * 3 wrong other info | |
2169 | */ | |
2170 | struct mdp_superblock_1 *first = st->sb; | |
2171 | struct mdp_superblock_1 *second = tst->sb; | |
2172 | ||
2173 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
2174 | return 1; | |
2175 | if (second->major_version != __cpu_to_le32(1)) | |
2176 | return 1; | |
2177 | ||
2178 | if (!first) { | |
2179 | if (posix_memalign((void **)&first, 4096, SUPER1_SIZE) != 0) { | |
2180 | pr_err("could not allocate superblock\n"); | |
2181 | return 1; | |
2182 | } | |
2183 | memcpy(first, second, SUPER1_SIZE); | |
2184 | st->sb = first; | |
2185 | return 0; | |
2186 | } | |
2187 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
2188 | return 2; | |
2189 | ||
2190 | if (first->ctime != second->ctime || | |
2191 | first->level != second->level || | |
2192 | first->layout != second->layout || | |
2193 | first->size != second->size || | |
2194 | first->chunksize != second->chunksize || | |
2195 | first->raid_disks != second->raid_disks) | |
2196 | return 3; | |
2197 | return 0; | |
2198 | } | |
2199 | ||
2200 | static int load_super1(struct supertype *st, int fd, char *devname) | |
2201 | { | |
2202 | unsigned long long dsize; | |
2203 | unsigned long long sb_offset; | |
2204 | struct mdp_superblock_1 *super; | |
2205 | int uuid[4]; | |
2206 | struct bitmap_super_s *bsb; | |
2207 | struct misc_dev_info *misc; | |
2208 | struct align_fd afd; | |
2209 | ||
2210 | free_super1(st); | |
2211 | ||
2212 | init_afd(&afd, fd); | |
2213 | ||
2214 | if (st->ss == NULL || st->minor_version == -1) { | |
2215 | int bestvers = -1; | |
2216 | struct supertype tst; | |
2217 | __u64 bestctime = 0; | |
2218 | /* guess... choose latest ctime */ | |
2219 | memset(&tst, 0, sizeof(tst)); | |
2220 | tst.ss = &super1; | |
2221 | for (tst.minor_version = 0; tst.minor_version <= 2; | |
2222 | tst.minor_version++) { | |
2223 | tst.ignore_hw_compat = st->ignore_hw_compat; | |
2224 | switch(load_super1(&tst, fd, devname)) { | |
2225 | case 0: super = tst.sb; | |
2226 | if (bestvers == -1 || | |
2227 | bestctime < __le64_to_cpu(super->ctime)) { | |
2228 | bestvers = tst.minor_version; | |
2229 | bestctime = __le64_to_cpu(super->ctime); | |
2230 | } | |
2231 | free(super); | |
2232 | tst.sb = NULL; | |
2233 | break; | |
2234 | case 1: return 1; /*bad device */ | |
2235 | case 2: break; /* bad, try next */ | |
2236 | } | |
2237 | } | |
2238 | if (bestvers != -1) { | |
2239 | int rv; | |
2240 | tst.minor_version = bestvers; | |
2241 | tst.ss = &super1; | |
2242 | tst.max_devs = MAX_DEVS; | |
2243 | rv = load_super1(&tst, fd, devname); | |
2244 | if (rv == 0) | |
2245 | *st = tst; | |
2246 | return rv; | |
2247 | } | |
2248 | return 2; | |
2249 | } | |
2250 | if (!get_dev_size(fd, devname, &dsize)) | |
2251 | return 1; | |
2252 | dsize >>= 9; | |
2253 | ||
2254 | if (dsize < 24) { | |
2255 | if (devname) | |
2256 | pr_err("%s is too small for md: size is %llu sectors.\n", | |
2257 | devname, dsize); | |
2258 | return 1; | |
2259 | } | |
2260 | ||
2261 | /* | |
2262 | * Calculate the position of the superblock. | |
2263 | * It is always aligned to a 4K boundary and | |
2264 | * depending on minor_version, it can be: | |
2265 | * 0: At least 8K, but less than 12K, from end of device | |
2266 | * 1: At start of device | |
2267 | * 2: 4K from start of device. | |
2268 | */ | |
2269 | switch(st->minor_version) { | |
2270 | case 0: | |
2271 | sb_offset = dsize; | |
2272 | sb_offset -= 8*2; | |
2273 | sb_offset &= ~(4*2-1); | |
2274 | break; | |
2275 | case 1: | |
2276 | sb_offset = 0; | |
2277 | break; | |
2278 | case 2: | |
2279 | sb_offset = 4*2; | |
2280 | break; | |
2281 | default: | |
2282 | return -EINVAL; | |
2283 | } | |
2284 | ||
2285 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { | |
2286 | if (devname) | |
2287 | pr_err("Cannot seek to superblock on %s: %s\n", | |
2288 | devname, strerror(errno)); | |
2289 | return 1; | |
2290 | } | |
2291 | ||
2292 | if (posix_memalign((void **)&super, 4096, SUPER1_SIZE) != 0) { | |
2293 | pr_err("could not allocate superblock\n"); | |
2294 | return 1; | |
2295 | } | |
2296 | ||
2297 | memset(super, 0, SUPER1_SIZE); | |
2298 | ||
2299 | if (aread(&afd, super, MAX_SB_SIZE) != MAX_SB_SIZE) { | |
2300 | if (devname) | |
2301 | pr_err("Cannot read superblock on %s\n", | |
2302 | devname); | |
2303 | free(super); | |
2304 | return 1; | |
2305 | } | |
2306 | ||
2307 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
2308 | if (devname) | |
2309 | pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", | |
2310 | devname, MD_SB_MAGIC, | |
2311 | __le32_to_cpu(super->magic)); | |
2312 | free(super); | |
2313 | return 2; | |
2314 | } | |
2315 | ||
2316 | if (__le32_to_cpu(super->major_version) != 1) { | |
2317 | if (devname) | |
2318 | pr_err("Cannot interpret superblock on %s - version is %d\n", | |
2319 | devname, __le32_to_cpu(super->major_version)); | |
2320 | free(super); | |
2321 | return 2; | |
2322 | } | |
2323 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
2324 | if (devname) | |
2325 | pr_err("No superblock found on %s (super_offset is wrong)\n", | |
2326 | devname); | |
2327 | free(super); | |
2328 | return 2; | |
2329 | } | |
2330 | ||
2331 | bsb = (struct bitmap_super_s *)(((char *)super) + MAX_SB_SIZE); | |
2332 | ||
2333 | misc = (struct misc_dev_info*) | |
2334 | (((char *)super) + MAX_SB_SIZE+BM_SUPER_SIZE); | |
2335 | misc->device_size = dsize; | |
2336 | if (st->data_offset == INVALID_SECTORS) | |
2337 | st->data_offset = __le64_to_cpu(super->data_offset); | |
2338 | ||
2339 | if (st->minor_version >= 1 && | |
2340 | st->ignore_hw_compat == 0 && | |
2341 | ((role_from_sb(super) != MD_DISK_ROLE_JOURNAL && | |
2342 | dsize < (__le64_to_cpu(super->data_offset) + | |
2343 | __le64_to_cpu(super->size))) || | |
2344 | dsize < (__le64_to_cpu(super->data_offset) + | |
2345 | __le64_to_cpu(super->data_size)))) { | |
2346 | if (devname) | |
2347 | pr_err("Device %s is not large enough for data described in superblock\n", | |
2348 | devname); | |
2349 | free(super); | |
2350 | return 2; | |
2351 | } | |
2352 | st->sb = super; | |
2353 | ||
2354 | /* Now check on the bitmap superblock */ | |
2355 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
2356 | return 0; | |
2357 | /* Read the bitmap superblock and make sure it looks | |
2358 | * valid. If it doesn't clear the bit. An --assemble --force | |
2359 | * should get that written out. | |
2360 | */ | |
2361 | locate_bitmap1(st, fd, 0); | |
2362 | if (aread(&afd, bsb, 512) != 512) | |
2363 | goto no_bitmap; | |
2364 | ||
2365 | uuid_from_super1(st, uuid); | |
2366 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || | |
2367 | memcmp(bsb->uuid, uuid, 16) != 0) | |
2368 | goto no_bitmap; | |
2369 | return 0; | |
2370 | ||
2371 | no_bitmap: | |
2372 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) & | |
2373 | ~MD_FEATURE_BITMAP_OFFSET); | |
2374 | return 0; | |
2375 | } | |
2376 | ||
2377 | static struct supertype *match_metadata_desc1(char *arg) | |
2378 | { | |
2379 | struct supertype *st = xcalloc(1, sizeof(*st)); | |
2380 | ||
2381 | st->container_devnm[0] = 0; | |
2382 | st->ss = &super1; | |
2383 | st->max_devs = MAX_DEVS; | |
2384 | st->sb = NULL; | |
2385 | st->data_offset = INVALID_SECTORS; | |
2386 | /* leading zeros can be safely ignored. --detail generates them. */ | |
2387 | while (*arg == '0') | |
2388 | arg++; | |
2389 | if (strcmp(arg, "1.0") == 0 || strcmp(arg, "1.00") == 0) { | |
2390 | st->minor_version = 0; | |
2391 | return st; | |
2392 | } | |
2393 | if (strcmp(arg, "1.1") == 0 || strcmp(arg, "1.01") == 0 | |
2394 | ) { | |
2395 | st->minor_version = 1; | |
2396 | return st; | |
2397 | } | |
2398 | if (strcmp(arg, "1.2") == 0 || | |
2399 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ | |
2400 | strcmp(arg, "default") == 0 || | |
2401 | #endif /* DEFAULT_OLD_METADATA */ | |
2402 | strcmp(arg, "1.02") == 0) { | |
2403 | st->minor_version = 2; | |
2404 | return st; | |
2405 | } | |
2406 | if (strcmp(arg, "1") == 0 || strcmp(arg, "default") == 0) { | |
2407 | st->minor_version = -1; | |
2408 | return st; | |
2409 | } | |
2410 | ||
2411 | free(st); | |
2412 | return NULL; | |
2413 | } | |
2414 | ||
2415 | /* find available size on device with this devsize, using | |
2416 | * superblock type st, and reserving 'reserve' sectors for | |
2417 | * a possible bitmap | |
2418 | */ | |
2419 | static __u64 avail_size1(struct supertype *st, __u64 devsize, | |
2420 | unsigned long long data_offset) | |
2421 | { | |
2422 | struct mdp_superblock_1 *super = st->sb; | |
2423 | int bmspace = 0; | |
2424 | int bbspace = 0; | |
2425 | if (devsize < 24) | |
2426 | return 0; | |
2427 | ||
2428 | if (__le32_to_cpu(super->feature_map) & MD_FEATURE_BITMAP_OFFSET) { | |
2429 | /* hot-add. allow for actual size of bitmap */ | |
2430 | struct bitmap_super_s *bsb; | |
2431 | bsb = (struct bitmap_super_s *)(((char *)super) + MAX_SB_SIZE); | |
2432 | bmspace = calc_bitmap_size(bsb, 4096) >> 9; | |
2433 | } else if (md_feature_any_ppl_on(super->feature_map)) { | |
2434 | bmspace = __le16_to_cpu(super->ppl.size); | |
2435 | } | |
2436 | ||
2437 | /* Allow space for bad block log */ | |
2438 | if (super->bblog_size) | |
2439 | bbspace = __le16_to_cpu(super->bblog_size); | |
2440 | ||
2441 | if (st->minor_version < 0) | |
2442 | /* not specified, so time to set default */ | |
2443 | st->minor_version = 2; | |
2444 | ||
2445 | if (data_offset == INVALID_SECTORS) | |
2446 | data_offset = st->data_offset; | |
2447 | ||
2448 | if (data_offset != INVALID_SECTORS) | |
2449 | switch(st->minor_version) { | |
2450 | case 0: | |
2451 | return devsize - data_offset - 8*2 - bbspace; | |
2452 | case 1: | |
2453 | case 2: | |
2454 | return devsize - data_offset; | |
2455 | default: | |
2456 | return 0; | |
2457 | } | |
2458 | ||
2459 | devsize -= bmspace; | |
2460 | ||
2461 | switch(st->minor_version) { | |
2462 | case 0: | |
2463 | /* at end */ | |
2464 | return ((devsize - 8*2 - bbspace ) & ~(4*2-1)); | |
2465 | case 1: | |
2466 | /* at start, 4K for superblock and possible bitmap */ | |
2467 | return devsize - 4*2 - bbspace; | |
2468 | case 2: | |
2469 | /* 4k from start, 4K for superblock and possible bitmap */ | |
2470 | return devsize - (4+4)*2 - bbspace; | |
2471 | } | |
2472 | return 0; | |
2473 | } | |
2474 | ||
2475 | static int | |
2476 | add_internal_bitmap1(struct supertype *st, | |
2477 | int *chunkp, int delay, int write_behind, | |
2478 | unsigned long long size, | |
2479 | int may_change, int major) | |
2480 | { | |
2481 | /* | |
2482 | * If not may_change, then this is a 'Grow' without sysfs support for | |
2483 | * bitmaps, and the bitmap must fit after the superblock at 1K offset. | |
2484 | * If may_change, then this is create or a Grow with sysfs support, | |
2485 | * and we can put the bitmap wherever we like. | |
2486 | * | |
2487 | * size is in sectors, chunk is in bytes !!! | |
2488 | */ | |
2489 | ||
2490 | unsigned long long bits; | |
2491 | unsigned long long max_bits; | |
2492 | unsigned long long min_chunk; | |
2493 | long offset; | |
2494 | long bbl_offset, bbl_size; | |
2495 | unsigned long long chunk = *chunkp; | |
2496 | int room = 0; | |
2497 | int creating = 0; | |
2498 | int len; | |
2499 | struct mdp_superblock_1 *sb = st->sb; | |
2500 | bitmap_super_t *bms = (bitmap_super_t *)(((char *)sb) + MAX_SB_SIZE); | |
2501 | int uuid[4]; | |
2502 | ||
2503 | if (__le64_to_cpu(sb->data_size) == 0) | |
2504 | /* | |
2505 | * Must be creating the array, else data_size | |
2506 | * would be non-zero | |
2507 | */ | |
2508 | creating = 1; | |
2509 | switch(st->minor_version) { | |
2510 | case 0: | |
2511 | /* | |
2512 | * either 3K after the superblock (when hot-add), | |
2513 | * or some amount of space before. | |
2514 | */ | |
2515 | if (creating) { | |
2516 | /* | |
2517 | * We are creating array, so we *know* how much room has | |
2518 | * been left. | |
2519 | */ | |
2520 | offset = 0; | |
2521 | bbl_size = 8; | |
2522 | room = | |
2523 | choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; | |
2524 | } else { | |
2525 | room = __le64_to_cpu(sb->super_offset) | |
2526 | - __le64_to_cpu(sb->data_offset) | |
2527 | - __le64_to_cpu(sb->data_size); | |
2528 | bbl_size = __le16_to_cpu(sb->bblog_size); | |
2529 | if (bbl_size < 8) | |
2530 | bbl_size = 8; | |
2531 | bbl_offset = (__s32)__le32_to_cpu(sb->bblog_offset); | |
2532 | if (bbl_size < -bbl_offset) | |
2533 | bbl_size = -bbl_offset; | |
2534 | ||
2535 | if (!may_change || | |
2536 | (room < 3*2 && __le32_to_cpu(sb->max_dev) <= 384)) { | |
2537 | room = 3*2; | |
2538 | offset = 1*2; | |
2539 | bbl_size = 0; | |
2540 | } else { | |
2541 | offset = 0; /* means movable offset */ | |
2542 | } | |
2543 | } | |
2544 | break; | |
2545 | case 1: | |
2546 | case 2: /* between superblock and data */ | |
2547 | if (creating) { | |
2548 | offset = 4*2; | |
2549 | bbl_size = 8; | |
2550 | room = | |
2551 | choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size; | |
2552 | } else { | |
2553 | room = __le64_to_cpu(sb->data_offset) | |
2554 | - __le64_to_cpu(sb->super_offset); | |
2555 | bbl_size = __le16_to_cpu(sb->bblog_size); | |
2556 | if (bbl_size) | |
2557 | room = | |
2558 | __le32_to_cpu(sb->bblog_offset) + bbl_size; | |
2559 | else | |
2560 | bbl_size = 8; | |
2561 | ||
2562 | if (!may_change) { | |
2563 | room -= 2; /* Leave 1K for superblock */ | |
2564 | offset = 2; | |
2565 | bbl_size = 0; | |
2566 | } else { | |
2567 | room -= 4*2; /* leave 4K for superblock */ | |
2568 | offset = 4*2; | |
2569 | } | |
2570 | } | |
2571 | break; | |
2572 | default: | |
2573 | return -ENOSPC; | |
2574 | } | |
2575 | ||
2576 | room -= bbl_size; | |
2577 | if (chunk == UnSet && room > 128*2) | |
2578 | /* Limit to 128K of bitmap when chunk size not requested */ | |
2579 | room = 128*2; | |
2580 | ||
2581 | if (room <= 1) | |
2582 | /* No room for a bitmap */ | |
2583 | return -ENOSPC; | |
2584 | ||
2585 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; | |
2586 | ||
2587 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
2588 | bits = (size * 512) / min_chunk + 1; | |
2589 | while (bits > max_bits) { | |
2590 | min_chunk *= 2; | |
2591 | bits = (bits + 1) / 2; | |
2592 | } | |
2593 | if (chunk == UnSet) { | |
2594 | /* For practical purpose, 64Meg is a good | |
2595 | * default chunk size for internal bitmaps. | |
2596 | */ | |
2597 | chunk = min_chunk; | |
2598 | if (chunk < 64*1024*1024) | |
2599 | chunk = 64*1024*1024; | |
2600 | } else if (chunk < min_chunk) | |
2601 | return -EINVAL; /* chunk size too small */ | |
2602 | if (chunk == 0) /* rounding problem */ | |
2603 | return -EINVAL; | |
2604 | ||
2605 | if (offset == 0) { | |
2606 | /* start bitmap on a 4K boundary with enough space for | |
2607 | * the bitmap | |
2608 | */ | |
2609 | bits = (size * 512) / chunk + 1; | |
2610 | room = ((bits + 7) / 8 + sizeof(bitmap_super_t) + 4095) / 4096; | |
2611 | room *= 8; /* convert 4K blocks to sectors */ | |
2612 | offset = -room - bbl_size; | |
2613 | } | |
2614 | ||
2615 | sb->bitmap_offset = (int32_t)__cpu_to_le32(offset); | |
2616 | ||
2617 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | | |
2618 | MD_FEATURE_BITMAP_OFFSET); | |
2619 | memset(bms, 0, sizeof(*bms)); | |
2620 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); | |
2621 | bms->version = __cpu_to_le32(major); | |
2622 | uuid_from_super1(st, uuid); | |
2623 | memcpy(bms->uuid, uuid, 16); | |
2624 | bms->chunksize = __cpu_to_le32(chunk); | |
2625 | bms->daemon_sleep = __cpu_to_le32(delay); | |
2626 | bms->sync_size = __cpu_to_le64(size); | |
2627 | bms->write_behind = __cpu_to_le32(write_behind); | |
2628 | bms->nodes = __cpu_to_le32(st->nodes); | |
2629 | if (st->nodes) | |
2630 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | | |
2631 | MD_FEATURE_BITMAP_VERSIONED); | |
2632 | if (st->cluster_name) { | |
2633 | len = sizeof(bms->cluster_name); | |
2634 | strncpy((char *)bms->cluster_name, st->cluster_name, len); | |
2635 | bms->cluster_name[len - 1] = '\0'; | |
2636 | } | |
2637 | ||
2638 | *chunkp = chunk; | |
2639 | return 0; | |
2640 | } | |
2641 | ||
2642 | static int locate_bitmap1(struct supertype *st, int fd, int node_num) | |
2643 | { | |
2644 | unsigned long long offset, bm_sectors_per_node; | |
2645 | struct mdp_superblock_1 *sb; | |
2646 | bitmap_super_t *bms; | |
2647 | int mustfree = 0; | |
2648 | int ret; | |
2649 | ||
2650 | if (!st->sb) { | |
2651 | if (st->ss->load_super(st, fd, NULL)) | |
2652 | return -1; /* no error I hope... */ | |
2653 | mustfree = 1; | |
2654 | } | |
2655 | sb = st->sb; | |
2656 | ||
2657 | if ((__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)) | |
2658 | ret = 0; | |
2659 | else | |
2660 | ret = -1; | |
2661 | ||
2662 | offset = __le64_to_cpu(sb->super_offset) + (int32_t)__le32_to_cpu(sb->bitmap_offset); | |
2663 | if (node_num) { | |
2664 | bms = (bitmap_super_t *)(((char *)sb) + MAX_SB_SIZE); | |
2665 | bm_sectors_per_node = calc_bitmap_size(bms, 4096) >> 9; | |
2666 | offset += bm_sectors_per_node * node_num; | |
2667 | } | |
2668 | if (mustfree) | |
2669 | free(sb); | |
2670 | lseek64(fd, offset<<9, 0); | |
2671 | return ret; | |
2672 | } | |
2673 | ||
2674 | static int write_bitmap1(struct supertype *st, int fd, enum bitmap_update update) | |
2675 | { | |
2676 | struct mdp_superblock_1 *sb = st->sb; | |
2677 | bitmap_super_t *bms = (bitmap_super_t *)(((char *)sb) + MAX_SB_SIZE); | |
2678 | int rv = 0; | |
2679 | void *buf; | |
2680 | int towrite, n, len; | |
2681 | struct align_fd afd; | |
2682 | unsigned int i = 0; | |
2683 | unsigned long long total_bm_space, bm_space_per_node; | |
2684 | ||
2685 | switch (update) { | |
2686 | case NameUpdate: | |
2687 | /* update cluster name */ | |
2688 | if (st->cluster_name) { | |
2689 | len = sizeof(bms->cluster_name); | |
2690 | memset((char *)bms->cluster_name, 0, len); | |
2691 | strncpy((char *)bms->cluster_name, | |
2692 | st->cluster_name, len); | |
2693 | bms->cluster_name[len - 1] = '\0'; | |
2694 | } | |
2695 | break; | |
2696 | case NodeNumUpdate: | |
2697 | /* cluster md only supports superblock 1.2 now */ | |
2698 | if (st->minor_version != 2 && | |
2699 | bms->version == BITMAP_MAJOR_CLUSTERED) { | |
2700 | pr_err("Warning: cluster md only works with superblock 1.2\n"); | |
2701 | return -EINVAL; | |
2702 | } | |
2703 | ||
2704 | if (bms->version == BITMAP_MAJOR_CLUSTERED) { | |
2705 | if (st->nodes == 1) { | |
2706 | /* the parameter for nodes is not valid */ | |
2707 | pr_err("Warning: cluster-md at least needs two nodes\n"); | |
2708 | return -EINVAL; | |
2709 | } else if (st->nodes == 0) { | |
2710 | /* | |
2711 | * parameter "--nodes" is not specified, (eg, add a disk to | |
2712 | * clustered raid) | |
2713 | */ | |
2714 | break; | |
2715 | } else if (__cpu_to_le32(st->nodes) < bms->nodes) { | |
2716 | /* | |
2717 | * Since the nodes num is not increased, no | |
2718 | * need to check the space enough or not, | |
2719 | * just update bms->nodes | |
2720 | */ | |
2721 | bms->nodes = __cpu_to_le32(st->nodes); | |
2722 | break; | |
2723 | } | |
2724 | } else { | |
2725 | /* | |
2726 | * no need to change bms->nodes for other | |
2727 | * bitmap types | |
2728 | */ | |
2729 | if (st->nodes) | |
2730 | pr_err("Warning: --nodes option is only suitable for clustered bitmap\n"); | |
2731 | break; | |
2732 | } | |
2733 | ||
2734 | /* | |
2735 | * Each node has an independent bitmap, it is necessary to | |
2736 | * calculate the space is enough or not, first get how many | |
2737 | * bytes for the total bitmap | |
2738 | */ | |
2739 | bm_space_per_node = calc_bitmap_size(bms, 4096); | |
2740 | ||
2741 | total_bm_space = 512 * (__le64_to_cpu(sb->data_offset) - | |
2742 | __le64_to_cpu(sb->super_offset)); | |
2743 | /* leave another 4k for superblock */ | |
2744 | total_bm_space = total_bm_space - 4096; | |
2745 | ||
2746 | if (bm_space_per_node * st->nodes > total_bm_space) { | |
2747 | pr_err("Warning: The max num of nodes can't exceed %llu\n", | |
2748 | total_bm_space / bm_space_per_node); | |
2749 | return -ENOMEM; | |
2750 | } | |
2751 | ||
2752 | bms->nodes = __cpu_to_le32(st->nodes); | |
2753 | break; | |
2754 | case NoUpdate: | |
2755 | default: | |
2756 | break; | |
2757 | } | |
2758 | ||
2759 | init_afd(&afd, fd); | |
2760 | ||
2761 | if (locate_bitmap1(st, fd, 0) < 0) { | |
2762 | pr_err("Error: Invalid bitmap\n"); | |
2763 | return -EINVAL; | |
2764 | } | |
2765 | ||
2766 | if (posix_memalign(&buf, 4096, 4096)) | |
2767 | return -ENOMEM; | |
2768 | ||
2769 | do { | |
2770 | /* Only the bitmap[0] should resync | |
2771 | * whole device on initial assembly | |
2772 | */ | |
2773 | if (i) | |
2774 | memset(buf, 0x00, 4096); | |
2775 | else | |
2776 | memset(buf, 0xff, 4096); | |
2777 | memcpy(buf, (char *)bms, sizeof(bitmap_super_t)); | |
2778 | ||
2779 | /* | |
2780 | * use 4096 boundary if bitmap_offset is aligned | |
2781 | * with 8 sectors, then it should compatible with | |
2782 | * older mdadm. | |
2783 | */ | |
2784 | if (__le32_to_cpu(sb->bitmap_offset) & 7) | |
2785 | towrite = calc_bitmap_size(bms, 512); | |
2786 | else | |
2787 | towrite = calc_bitmap_size(bms, 4096); | |
2788 | while (towrite > 0) { | |
2789 | n = towrite; | |
2790 | if (n > 4096) | |
2791 | n = 4096; | |
2792 | n = awrite(&afd, buf, n); | |
2793 | if (n > 0) | |
2794 | towrite -= n; | |
2795 | else | |
2796 | break; | |
2797 | if (i) | |
2798 | memset(buf, 0x00, 4096); | |
2799 | else | |
2800 | memset(buf, 0xff, 4096); | |
2801 | } | |
2802 | fsync(fd); | |
2803 | if (towrite) { | |
2804 | rv = -2; | |
2805 | break; | |
2806 | } | |
2807 | } while (++i < __le32_to_cpu(bms->nodes)); | |
2808 | ||
2809 | free(buf); | |
2810 | return rv; | |
2811 | } | |
2812 | ||
2813 | static void free_super1(struct supertype *st) | |
2814 | { | |
2815 | ||
2816 | if (st->sb) | |
2817 | free(st->sb); | |
2818 | while (st->info) { | |
2819 | struct devinfo *di = st->info; | |
2820 | st->info = di->next; | |
2821 | if (di->fd >= 0) | |
2822 | close(di->fd); | |
2823 | free(di); | |
2824 | } | |
2825 | st->sb = NULL; | |
2826 | } | |
2827 | ||
2828 | static int validate_geometry1(struct supertype *st, int level, | |
2829 | int layout, int raiddisks, | |
2830 | int *chunk, unsigned long long size, | |
2831 | unsigned long long data_offset, | |
2832 | char *subdev, unsigned long long *freesize, | |
2833 | int consistency_policy, int verbose) | |
2834 | { | |
2835 | unsigned long long ldsize, devsize; | |
2836 | int bmspace; | |
2837 | unsigned long long headroom; | |
2838 | unsigned long long overhead; | |
2839 | int fd; | |
2840 | ||
2841 | if (is_container(level)) { | |
2842 | if (verbose) | |
2843 | pr_err("1.x metadata does not support containers\n"); | |
2844 | return 0; | |
2845 | } | |
2846 | if (*chunk == UnSet) | |
2847 | *chunk = DEFAULT_CHUNK; | |
2848 | ||
2849 | if (!subdev) | |
2850 | return 1; | |
2851 | ||
2852 | if (st->minor_version < 0) | |
2853 | /* not specified, so time to set default */ | |
2854 | st->minor_version = 2; | |
2855 | ||
2856 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
2857 | if (fd < 0) { | |
2858 | if (verbose) | |
2859 | pr_err("super1.x cannot open %s: %s\n", | |
2860 | subdev, strerror(errno)); | |
2861 | return 0; | |
2862 | } | |
2863 | ||
2864 | if (!get_dev_size(fd, subdev, &ldsize)) { | |
2865 | close(fd); | |
2866 | return 0; | |
2867 | } | |
2868 | close(fd); | |
2869 | ||
2870 | devsize = ldsize >> 9; | |
2871 | ||
2872 | /* creating: allow suitable space for bitmap or PPL */ | |
2873 | if (consistency_policy == CONSISTENCY_POLICY_PPL) | |
2874 | bmspace = MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9; | |
2875 | else | |
2876 | bmspace = choose_bm_space(devsize); | |
2877 | ||
2878 | if (data_offset == INVALID_SECTORS) | |
2879 | data_offset = st->data_offset; | |
2880 | if (data_offset == INVALID_SECTORS) | |
2881 | switch (st->minor_version) { | |
2882 | case 0: | |
2883 | data_offset = 0; | |
2884 | break; | |
2885 | case 1: | |
2886 | case 2: | |
2887 | /* Choose data offset appropriate for this device | |
2888 | * and use as default for whole array. | |
2889 | * The data_offset must allow for bitmap space | |
2890 | * and base metadata, should allow for some headroom | |
2891 | * for reshape, and should be rounded to multiple | |
2892 | * of 1M. | |
2893 | * Headroom is limited to 128M, but aim for about 0.1% | |
2894 | */ | |
2895 | headroom = 128*1024*2; | |
2896 | while ((headroom << 10) > devsize && | |
2897 | (*chunk == 0 || | |
2898 | headroom / 2 >= ((unsigned)(*chunk)*2)*2)) | |
2899 | headroom >>= 1; | |
2900 | data_offset = 12*2 + bmspace + headroom; | |
2901 | #define ONE_MEG (2*1024) | |
2902 | data_offset = ROUND_UP(data_offset, ONE_MEG); | |
2903 | break; | |
2904 | } | |
2905 | if (st->data_offset == INVALID_SECTORS) | |
2906 | st->data_offset = data_offset; | |
2907 | switch(st->minor_version) { | |
2908 | case 0: /* metadata at end. Round down and subtract space to reserve */ | |
2909 | devsize = (devsize & ~(4ULL*2-1)); | |
2910 | /* space for metadata, bblog, bitmap/ppl */ | |
2911 | overhead = 8*2 + 8 + bmspace; | |
2912 | if (devsize < overhead) /* detect underflow */ | |
2913 | goto dev_too_small_err; | |
2914 | devsize -= overhead; | |
2915 | break; | |
2916 | case 1: | |
2917 | case 2: | |
2918 | if (devsize < data_offset) /* detect underflow */ | |
2919 | goto dev_too_small_err; | |
2920 | devsize -= data_offset; | |
2921 | break; | |
2922 | } | |
2923 | *freesize = devsize; | |
2924 | return 1; | |
2925 | ||
2926 | /* Error condition, device cannot even hold the overhead. */ | |
2927 | dev_too_small_err: | |
2928 | fprintf(stderr, "device %s is too small (%lluK) for " | |
2929 | "required metadata!\n", subdev, devsize>>1); | |
2930 | *freesize = 0; | |
2931 | return 0; | |
2932 | } | |
2933 | ||
2934 | void *super1_make_v0(struct supertype *st, struct mdinfo *info, mdp_super_t *sb0) | |
2935 | { | |
2936 | /* Create a v1.0 superblock based on 'info'*/ | |
2937 | void *ret; | |
2938 | struct mdp_superblock_1 *sb; | |
2939 | int i; | |
2940 | unsigned long long offset; | |
2941 | ||
2942 | if (posix_memalign(&ret, 4096, 1024) != 0) | |
2943 | return NULL; | |
2944 | sb = ret; | |
2945 | memset(ret, 0, 1024); | |
2946 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); | |
2947 | sb->major_version = __cpu_to_le32(1); | |
2948 | ||
2949 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); | |
2950 | sprintf(sb->set_name, "%d", sb0->md_minor); | |
2951 | sb->ctime = __cpu_to_le32(info->array.ctime + 1); | |
2952 | sb->level = __cpu_to_le32(info->array.level); | |
2953 | sb->layout = __cpu_to_le32(info->array.layout); | |
2954 | sb->size = __cpu_to_le64(info->component_size); | |
2955 | sb->chunksize = __cpu_to_le32(info->array.chunk_size / 512); | |
2956 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); | |
2957 | if (info->array.level > 0) | |
2958 | sb->data_size = sb->size; | |
2959 | else | |
2960 | sb->data_size = st->ss->avail_size(st, st->devsize / 512, 0); | |
2961 | sb->resync_offset = MaxSector; | |
2962 | sb->max_dev = __cpu_to_le32(MD_SB_DISKS); | |
2963 | sb->dev_number = __cpu_to_le32(info->disk.number); | |
2964 | sb->utime = __cpu_to_le64(info->array.utime); | |
2965 | ||
2966 | offset = st->devsize/512 - 8*2; | |
2967 | offset &= ~(4*2-1); | |
2968 | sb->super_offset = __cpu_to_le64(offset); | |
2969 | //*(__u64*)(st->other + 128 + 8 + 8) = __cpu_to_le64(offset); | |
2970 | ||
2971 | random_uuid(sb->device_uuid); | |
2972 | ||
2973 | for (i = 0; i < MD_SB_DISKS; i++) { | |
2974 | int state = sb0->disks[i].state; | |
2975 | sb->dev_roles[i] = MD_DISK_ROLE_SPARE; | |
2976 | if ((state & (1<<MD_DISK_SYNC)) && | |
2977 | !(state & (1<<MD_DISK_FAULTY))) | |
2978 | sb->dev_roles[i] = __cpu_to_le16(sb0->disks[i].raid_disk); | |
2979 | } | |
2980 | sb->sb_csum = calc_sb_1_csum(sb); | |
2981 | return ret; | |
2982 | } | |
2983 | ||
2984 | struct superswitch super1 = { | |
2985 | .examine_super = examine_super1, | |
2986 | .brief_examine_super = brief_examine_super1, | |
2987 | .export_examine_super = export_examine_super1, | |
2988 | .detail_super = detail_super1, | |
2989 | .brief_detail_super = brief_detail_super1, | |
2990 | .export_detail_super = export_detail_super1, | |
2991 | .write_init_super = write_init_super1, | |
2992 | .validate_geometry = validate_geometry1, | |
2993 | .add_to_super = add_to_super1, | |
2994 | .examine_badblocks = examine_badblocks_super1, | |
2995 | .copy_metadata = copy_metadata1, | |
2996 | .write_init_ppl = write_init_ppl1, | |
2997 | .match_home = match_home1, | |
2998 | .uuid_from_super = uuid_from_super1, | |
2999 | .getinfo_super = getinfo_super1, | |
3000 | .container_content = container_content1, | |
3001 | .update_super = update_super1, | |
3002 | .init_super = init_super1, | |
3003 | .store_super = store_super1, | |
3004 | .compare_super = compare_super1, | |
3005 | .load_super = load_super1, | |
3006 | .match_metadata_desc = match_metadata_desc1, | |
3007 | .avail_size = avail_size1, | |
3008 | .add_internal_bitmap = add_internal_bitmap1, | |
3009 | .locate_bitmap = locate_bitmap1, | |
3010 | .write_bitmap = write_bitmap1, | |
3011 | .free_super = free_super1, | |
3012 | #if __BYTE_ORDER == BIG_ENDIAN | |
3013 | .swapuuid = 0, | |
3014 | #else | |
3015 | .swapuuid = 1, | |
3016 | #endif | |
3017 | .name = "1.x", | |
3018 | }; |