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Commit | Line | Data |
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82d9eba6 NB |
1 | /* |
2 | * mdadm - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
e736b623 | 4 | * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de> |
82d9eba6 NB |
5 | * |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
e736b623 | 22 | * Email: <neilb@suse.de> |
82d9eba6 NB |
23 | */ |
24 | ||
25 | #include "mdadm.h" | |
82d9eba6 NB |
26 | /* |
27 | * The version-1 superblock : | |
28 | * All numeric fields are little-endian. | |
29 | * | |
30 | * total size: 256 bytes plus 2 per device. | |
31 | * 1K allows 384 devices. | |
32 | */ | |
33 | struct mdp_superblock_1 { | |
34 | /* constant array information - 128 bytes */ | |
35 | __u32 magic; /* MD_SB_MAGIC: 0xa92b4efc - little endian */ | |
36 | __u32 major_version; /* 1 */ | |
37 | __u32 feature_map; /* 0 for now */ | |
38 | __u32 pad0; /* always set to 0 when writing */ | |
39 | ||
40 | __u8 set_uuid[16]; /* user-space generated. */ | |
41 | char set_name[32]; /* set and interpreted by user-space */ | |
42 | ||
43 | __u64 ctime; /* lo 40 bits are seconds, top 24 are microseconds or 0*/ | |
44 | __u32 level; /* -4 (multipath), -1 (linear), 0,1,4,5 */ | |
45 | __u32 layout; /* only for raid5 currently */ | |
46 | __u64 size; /* used size of component devices, in 512byte sectors */ | |
47 | ||
48 | __u32 chunksize; /* in 512byte sectors */ | |
49 | __u32 raid_disks; | |
34163fc7 NB |
50 | __u32 bitmap_offset; /* sectors after start of superblock that bitmap starts |
51 | * NOTE: signed, so bitmap can be before superblock | |
52 | * only meaningful of feature_map[0] is set. | |
53 | */ | |
b674b5b8 NB |
54 | |
55 | /* These are only valid with feature bit '4' */ | |
b674b5b8 | 56 | __u32 new_level; /* new level we are reshaping to */ |
ac957baa | 57 | __u64 reshape_position; /* next address in array-space for reshape */ |
b674b5b8 NB |
58 | __u32 delta_disks; /* change in number of raid_disks */ |
59 | __u32 new_layout; /* new layout */ | |
60 | __u32 new_chunk; /* new chunk size (bytes) */ | |
61 | __u8 pad1[128-124]; /* set to 0 when written */ | |
82d9eba6 NB |
62 | |
63 | /* constant this-device information - 64 bytes */ | |
64 | __u64 data_offset; /* sector start of data, often 0 */ | |
65 | __u64 data_size; /* sectors in this device that can be used for data */ | |
66 | __u64 super_offset; /* sector start of this superblock */ | |
67 | __u64 recovery_offset;/* sectors before this offset (from data_offset) have been recovered */ | |
68 | __u32 dev_number; /* permanent identifier of this device - not role in raid */ | |
69 | __u32 cnt_corrected_read; /* number of read errors that were corrected by re-writing */ | |
70 | __u8 device_uuid[16]; /* user-space setable, ignored by kernel */ | |
dfd4d8ee NB |
71 | __u8 devflags; /* per-device flags. Only one defined...*/ |
72 | #define WriteMostly1 1 /* mask for writemostly flag in above */ | |
73 | __u8 pad2[64-57]; /* set to 0 when writing */ | |
82d9eba6 NB |
74 | |
75 | /* array state information - 64 bytes */ | |
76 | __u64 utime; /* 40 bits second, 24 btes microseconds */ | |
77 | __u64 events; /* incremented when superblock updated */ | |
78 | __u64 resync_offset; /* data before this offset (from data_offset) known to be in sync */ | |
4180aa4d N |
79 | __u32 sb_csum; /* checksum upto dev_roles[max_dev] */ |
80 | __u32 max_dev; /* size of dev_roles[] array to consider */ | |
82d9eba6 NB |
81 | __u8 pad3[64-32]; /* set to 0 when writing */ |
82 | ||
83 | /* device state information. Indexed by dev_number. | |
84 | * 2 bytes per device | |
85 | * Note there are no per-device state flags. State information is rolled | |
86 | * into the 'roles' value. If a device is spare or faulty, then it doesn't | |
87 | * have a meaningful role. | |
88 | */ | |
89 | __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ | |
90 | }; | |
91 | ||
bee8ec56 NB |
92 | struct misc_dev_info { |
93 | __u64 device_size; | |
94 | }; | |
95 | ||
d2cd3ffc NB |
96 | /* feature_map bits */ |
97 | #define MD_FEATURE_BITMAP_OFFSET 1 | |
98 | #define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and | |
99 | * must be honoured | |
100 | */ | |
b674b5b8 | 101 | #define MD_FEATURE_RESHAPE_ACTIVE 4 |
d2cd3ffc | 102 | |
b674b5b8 | 103 | #define MD_FEATURE_ALL (1|2|4) |
d2cd3ffc | 104 | |
570c0542 | 105 | #ifndef offsetof |
067db4df | 106 | #define offsetof(t,f) ((size_t)&(((t*)0)->f)) |
570c0542 | 107 | #endif |
82d9eba6 NB |
108 | static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb) |
109 | { | |
110 | unsigned int disk_csum, csum; | |
111 | unsigned long long newcsum; | |
112 | int size = sizeof(*sb) + __le32_to_cpu(sb->max_dev)*2; | |
113 | unsigned int *isuper = (unsigned int*)sb; | |
82d9eba6 NB |
114 | |
115 | /* make sure I can count... */ | |
116 | if (offsetof(struct mdp_superblock_1,data_offset) != 128 || | |
117 | offsetof(struct mdp_superblock_1, utime) != 192 || | |
118 | sizeof(struct mdp_superblock_1) != 256) { | |
119 | fprintf(stderr, "WARNING - superblock isn't sized correctly\n"); | |
120 | } | |
121 | ||
122 | disk_csum = sb->sb_csum; | |
123 | sb->sb_csum = 0; | |
124 | newcsum = 0; | |
e4c72d1d | 125 | for (; size>=4; size -= 4 ) { |
722966c6 PC |
126 | newcsum += __le32_to_cpu(*isuper); |
127 | isuper++; | |
128 | } | |
82d9eba6 NB |
129 | |
130 | if (size == 2) | |
131 | newcsum += __le16_to_cpu(*(unsigned short*) isuper); | |
132 | ||
133 | csum = (newcsum & 0xffffffff) + (newcsum >> 32); | |
134 | sb->sb_csum = disk_csum; | |
83205b64 | 135 | return __cpu_to_le32(csum); |
82d9eba6 NB |
136 | } |
137 | ||
5ea022a1 N |
138 | static char abuf[4096+4096]; |
139 | static int aread(int fd, void *buf, int len) | |
140 | { | |
141 | /* aligned read. | |
142 | * On devices with a 4K sector size, we need to read | |
143 | * the full sector and copy relevant bits into | |
144 | * the buffer | |
145 | */ | |
146 | int bsize; | |
147 | char *b; | |
148 | int n; | |
149 | if (ioctl(fd, BLKSSZGET, &bsize) != 0 || | |
150 | bsize <= len) | |
151 | return read(fd, buf, len); | |
152 | if (bsize > 4096) | |
153 | return -1; | |
154 | b = (char*)(((long)(abuf+4096))&~4095UL); | |
155 | ||
156 | n = read(fd, b, bsize); | |
157 | if (n <= 0) | |
158 | return n; | |
159 | lseek(fd, len - n, 1); | |
160 | if (n > len) | |
161 | n = len; | |
162 | memcpy(buf, b, n); | |
163 | return n; | |
164 | } | |
165 | ||
166 | static int awrite(int fd, void *buf, int len) | |
167 | { | |
168 | /* aligned write. | |
169 | * On devices with a 4K sector size, we need to write | |
170 | * the full sector. We pre-read if the sector is larger | |
171 | * than the write. | |
172 | * The address must be sector-aligned. | |
173 | */ | |
174 | int bsize; | |
175 | char *b; | |
176 | int n; | |
177 | if (ioctl(fd, BLKSSZGET, &bsize) != 0 || | |
178 | bsize <= len) | |
179 | return write(fd, buf, len); | |
180 | if (bsize > 4096) | |
181 | return -1; | |
182 | b = (char*)(((long)(abuf+4096))&~4095UL); | |
183 | ||
184 | n = read(fd, b, bsize); | |
185 | if (n <= 0) | |
186 | return n; | |
187 | lseek(fd, -n, 1); | |
188 | memcpy(b, buf, len); | |
189 | n = write(fd, b, bsize); | |
190 | if (n <= 0) | |
191 | return n; | |
192 | lseek(fd, len - n, 1); | |
193 | return len; | |
194 | } | |
195 | ||
c7654afc | 196 | #ifndef MDASSEMBLE |
3da92f27 | 197 | static void examine_super1(struct supertype *st, char *homehost) |
82d9eba6 | 198 | { |
3da92f27 | 199 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 200 | time_t atime; |
f21e18ca | 201 | unsigned int d; |
e8e1c176 | 202 | int role; |
4180aa4d | 203 | int delta_extra = 0; |
82d9eba6 NB |
204 | int i; |
205 | char *c; | |
a1cbd7d0 | 206 | int l = homehost ? strlen(homehost) : 0; |
83205b64 | 207 | int layout; |
a17a3de3 | 208 | unsigned long long sb_offset; |
82d9eba6 NB |
209 | |
210 | printf(" Magic : %08x\n", __le32_to_cpu(sb->magic)); | |
a17a3de3 DL |
211 | printf(" Version : 1"); |
212 | sb_offset = __le64_to_cpu(sb->super_offset); | |
213 | if (sb_offset <= 4) | |
214 | printf(".1\n"); | |
215 | else if (sb_offset <= 8) | |
216 | printf(".2\n"); | |
217 | else | |
218 | printf(".0\n"); | |
91eedefc | 219 | printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map)); |
82d9eba6 NB |
220 | printf(" Array UUID : "); |
221 | for (i=0; i<16; i++) { | |
82d9eba6 | 222 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 223 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
224 | } |
225 | printf("\n"); | |
a1cbd7d0 NB |
226 | printf(" Name : %.32s", sb->set_name); |
227 | if (l > 0 && l < 32 && | |
228 | sb->set_name[l] == ':' && | |
229 | strncmp(sb->set_name, homehost, l) == 0) | |
230 | printf(" (local to host %s)", homehost); | |
231 | printf("\n"); | |
82d9eba6 NB |
232 | atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL; |
233 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
234 | c=map_num(pers, __le32_to_cpu(sb->level)); | |
235 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
236 | printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks)); | |
237 | printf("\n"); | |
5cda0964 | 238 | printf(" Avail Dev Size : %llu%s\n", |
2fb749d1 NB |
239 | (unsigned long long)__le64_to_cpu(sb->data_size), |
240 | human_size(__le64_to_cpu(sb->data_size)<<9)); | |
c43f7d91 | 241 | if (__le32_to_cpu(sb->level) > 0) { |
b674b5b8 NB |
242 | int ddsks=0; |
243 | switch(__le32_to_cpu(sb->level)) { | |
244 | case 1: ddsks=1;break; | |
245 | case 4: | |
83205b64 NB |
246 | case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break; |
247 | case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break; | |
248 | case 10: | |
249 | layout = __le32_to_cpu(sb->layout); | |
250 | ddsks = __le32_to_cpu(sb->raid_disks) | |
251 | / (layout&255) / ((layout>>8)&255); | |
b674b5b8 NB |
252 | } |
253 | if (ddsks) | |
83205b64 | 254 | printf(" Array Size : %llu%s\n", |
c1c05f7f | 255 | ddsks*(unsigned long long)__le64_to_cpu(sb->size), |
83205b64 | 256 | human_size(ddsks*__le64_to_cpu(sb->size)<<9)); |
b674b5b8 | 257 | if (sb->size != sb->data_size) |
5cda0964 | 258 | printf(" Used Dev Size : %llu%s\n", |
83205b64 NB |
259 | (unsigned long long)__le64_to_cpu(sb->size), |
260 | human_size(__le64_to_cpu(sb->size)<<9)); | |
b674b5b8 | 261 | } |
82d9eba6 | 262 | if (sb->data_offset) |
199171a2 NB |
263 | printf(" Data Offset : %llu sectors\n", |
264 | (unsigned long long)__le64_to_cpu(sb->data_offset)); | |
265 | printf(" Super Offset : %llu sectors\n", | |
266 | (unsigned long long)__le64_to_cpu(sb->super_offset)); | |
d2cd3ffc NB |
267 | if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET) |
268 | printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset)); | |
a3fd117c | 269 | printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean"); |
82d9eba6 NB |
270 | printf(" Device UUID : "); |
271 | for (i=0; i<16; i++) { | |
82d9eba6 | 272 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 273 | printf("%02x", sb->device_uuid[i]); |
82d9eba6 NB |
274 | } |
275 | printf("\n"); | |
b674b5b8 | 276 | printf("\n"); |
91eedefc NB |
277 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
278 | printf("Internal Bitmap : %ld sectors from superblock\n", | |
68754bd1 | 279 | (long)(int32_t)__le32_to_cpu(sb->bitmap_offset)); |
8fac0577 | 280 | } |
b674b5b8 | 281 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
1e0d770c | 282 | printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2, |
b674b5b8 NB |
283 | human_size(__le64_to_cpu(sb->reshape_position)<<9)); |
284 | if (__le32_to_cpu(sb->delta_disks)) { | |
285 | printf(" Delta Devices : %d", __le32_to_cpu(sb->delta_disks)); | |
4180aa4d N |
286 | printf(" (%d->%d)\n", |
287 | __le32_to_cpu(sb->raid_disks)-__le32_to_cpu(sb->delta_disks), | |
288 | __le32_to_cpu(sb->raid_disks)); | |
289 | if ((int)__le32_to_cpu(sb->delta_disks) < 0) | |
290 | delta_extra = -__le32_to_cpu(sb->delta_disks); | |
b674b5b8 NB |
291 | } |
292 | if (__le32_to_cpu(sb->new_level) != __le32_to_cpu(sb->level)) { | |
293 | c = map_num(pers, __le32_to_cpu(sb->new_level)); | |
294 | printf(" New Level : %s\n", c?c:"-unknown-"); | |
295 | } | |
296 | if (__le32_to_cpu(sb->new_layout) != __le32_to_cpu(sb->layout)) { | |
297 | if (__le32_to_cpu(sb->level) == 5) { | |
298 | c = map_num(r5layout, __le32_to_cpu(sb->new_layout)); | |
299 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
300 | } | |
fe77a154 N |
301 | if (__le32_to_cpu(sb->level) == 6) { |
302 | c = map_num(r6layout, __le32_to_cpu(sb->new_layout)); | |
303 | printf(" New Layout : %s\n", c?c:"-unknown-"); | |
304 | } | |
b674b5b8 | 305 | if (__le32_to_cpu(sb->level) == 10) { |
e4965ef8 N |
306 | printf(" New Layout :"); |
307 | print_r10_layout(__le32_to_cpu(sb->new_layout)); | |
308 | printf("\n"); | |
b674b5b8 NB |
309 | } |
310 | } | |
311 | if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize)) | |
312 | printf(" New Chunksize : %dK\n", __le32_to_cpu(sb->new_chunk)/2); | |
313 | printf("\n"); | |
314 | } | |
dfd4d8ee NB |
315 | if (sb->devflags) { |
316 | printf(" Flags :"); | |
34163fc7 | 317 | if (sb->devflags & WriteMostly1) |
dfd4d8ee NB |
318 | printf(" write-mostly"); |
319 | printf("\n"); | |
320 | } | |
82d9eba6 NB |
321 | |
322 | atime = __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL; | |
323 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
324 | ||
325 | if (calc_sb_1_csum(sb) == sb->sb_csum) | |
326 | printf(" Checksum : %x - correct\n", __le32_to_cpu(sb->sb_csum)); | |
327 | else | |
328 | printf(" Checksum : %x - expected %x\n", __le32_to_cpu(sb->sb_csum), | |
329 | __le32_to_cpu(calc_sb_1_csum(sb))); | |
570c0542 | 330 | printf(" Events : %llu\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
331 | printf("\n"); |
332 | if (__le32_to_cpu(sb->level) == 5) { | |
333 | c = map_num(r5layout, __le32_to_cpu(sb->layout)); | |
334 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
335 | } | |
fe77a154 N |
336 | if (__le32_to_cpu(sb->level) == 6) { |
337 | c = map_num(r6layout, __le32_to_cpu(sb->layout)); | |
338 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
339 | } | |
265e0f17 NB |
340 | if (__le32_to_cpu(sb->level) == 10) { |
341 | int lo = __le32_to_cpu(sb->layout); | |
e4965ef8 N |
342 | printf(" Layout :"); |
343 | print_r10_layout(lo); | |
344 | printf("\n"); | |
265e0f17 | 345 | } |
82d9eba6 NB |
346 | switch(__le32_to_cpu(sb->level)) { |
347 | case 0: | |
348 | case 4: | |
349 | case 5: | |
d2cd3ffc NB |
350 | case 6: |
351 | case 10: | |
b674b5b8 | 352 | printf(" Chunk Size : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
353 | break; |
354 | case -1: | |
b674b5b8 | 355 | printf(" Rounding : %dK\n", __le32_to_cpu(sb->chunksize)/2); |
82d9eba6 NB |
356 | break; |
357 | default: break; | |
358 | } | |
359 | printf("\n"); | |
e8e1c176 N |
360 | #if 0 |
361 | /* This turns out to just be confusing */ | |
c3684618 NB |
362 | printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number)); |
363 | for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--) | |
364 | if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff) | |
365 | break; | |
366 | for (d=0; d < i; d++) { | |
367 | int role = __le16_to_cpu(sb->dev_roles[d]); | |
368 | if (d) printf(", "); | |
369 | if (role == 0xffff) printf("empty"); | |
370 | else if(role == 0xfffe) printf("failed"); | |
371 | else printf("%d", role); | |
372 | } | |
373 | printf(")\n"); | |
e8e1c176 N |
374 | #endif |
375 | printf(" Device Role : "); | |
376 | d = __le32_to_cpu(sb->dev_number); | |
4180aa4d | 377 | if (d < __le32_to_cpu(sb->max_dev)) |
e8e1c176 N |
378 | role = __le16_to_cpu(sb->dev_roles[d]); |
379 | else | |
380 | role = 0xFFFF; | |
381 | if (role >= 0xFFFE) | |
382 | printf("spare\n"); | |
383 | else | |
384 | printf("Active device %d\n", role); | |
385 | ||
82d9eba6 | 386 | printf(" Array State : "); |
4180aa4d | 387 | for (d=0; d<__le32_to_cpu(sb->raid_disks) + delta_extra; d++) { |
82d9eba6 | 388 | int cnt = 0; |
f21e18ca | 389 | unsigned int i; |
82d9eba6 | 390 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
f21e18ca | 391 | unsigned int role = __le16_to_cpu(sb->dev_roles[i]); |
e4c72d1d | 392 | if (role == d) |
82d9eba6 | 393 | cnt++; |
82d9eba6 NB |
394 | } |
395 | if (cnt > 1) printf("?"); | |
e8e1c176 N |
396 | else if (cnt == 1) printf("A"); |
397 | else printf ("."); | |
82d9eba6 | 398 | } |
e8e1c176 N |
399 | #if 0 |
400 | /* This is confusing too */ | |
6fbba4c9 | 401 | faulty = 0; |
82d9eba6 NB |
402 | for (i=0; i< __le32_to_cpu(sb->max_dev); i++) { |
403 | int role = __le16_to_cpu(sb->dev_roles[i]); | |
6fbba4c9 NB |
404 | if (role == 0xFFFE) |
405 | faulty++; | |
82d9eba6 | 406 | } |
82d9eba6 | 407 | if (faulty) printf(" %d failed", faulty); |
e8e1c176 N |
408 | #endif |
409 | printf(" ('A' == active, '.' == missing)"); | |
82d9eba6 NB |
410 | printf("\n"); |
411 | } | |
412 | ||
413 | ||
061f2c6a | 414 | static void brief_examine_super1(struct supertype *st, int verbose) |
82d9eba6 | 415 | { |
3da92f27 | 416 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 417 | int i; |
a17a3de3 | 418 | unsigned long long sb_offset; |
2998bc01 | 419 | char *nm; |
b015e6c2 | 420 | char *c=map_num(pers, __le32_to_cpu(sb->level)); |
2998bc01 NB |
421 | |
422 | nm = strchr(sb->set_name, ':'); | |
423 | if (nm) | |
424 | nm++; | |
425 | else if (sb->set_name[0]) | |
426 | nm = sb->set_name; | |
427 | else | |
cf8de691 | 428 | nm = NULL; |
82d9eba6 | 429 | |
061f2c6a N |
430 | printf("ARRAY%s%s", nm ? " /dev/md/":"", nm); |
431 | if (verbose && c) | |
432 | printf(" level=%s", c); | |
a17a3de3 DL |
433 | sb_offset = __le64_to_cpu(sb->super_offset); |
434 | if (sb_offset <= 4) | |
e9a0e728 | 435 | printf(" metadata=1.1 "); |
a17a3de3 | 436 | else if (sb_offset <= 8) |
e9a0e728 | 437 | printf(" metadata=1.2 "); |
a17a3de3 | 438 | else |
e9a0e728 | 439 | printf(" metadata=1.0 "); |
061f2c6a N |
440 | if (verbose) |
441 | printf("num-devices=%d ", __le32_to_cpu(sb->raid_disks)); | |
442 | printf("UUID="); | |
82d9eba6 | 443 | for (i=0; i<16; i++) { |
82d9eba6 | 444 | if ((i&3)==0 && i != 0) printf(":"); |
b7a708af | 445 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 446 | } |
947fd4dd NB |
447 | if (sb->set_name[0]) |
448 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
449 | printf("\n"); |
450 | } | |
451 | ||
0d726f17 KS |
452 | static void export_examine_super1(struct supertype *st) |
453 | { | |
454 | struct mdp_superblock_1 *sb = st->sb; | |
455 | int i; | |
456 | int len = 32; | |
457 | ||
458 | printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level))); | |
459 | printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks)); | |
460 | for (i=0; i<32; i++) | |
461 | if (sb->set_name[i] == '\n' || | |
462 | sb->set_name[i] == '\0') { | |
463 | len = i; | |
464 | break; | |
465 | } | |
466 | if (len) | |
467 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
468 | printf("MD_UUID="); | |
469 | for (i=0; i<16; i++) { | |
470 | if ((i&3)==0 && i != 0) printf(":"); | |
471 | printf("%02x", sb->set_uuid[i]); | |
472 | } | |
473 | printf("\n"); | |
474 | printf("MD_UPDATE_TIME=%llu\n", | |
475 | __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL); | |
476 | printf("MD_DEV_UUID="); | |
477 | for (i=0; i<16; i++) { | |
478 | if ((i&3)==0 && i != 0) printf(":"); | |
479 | printf("%02x", sb->device_uuid[i]); | |
480 | } | |
481 | printf("\n"); | |
482 | printf("MD_EVENTS=%llu\n", | |
483 | (unsigned long long)__le64_to_cpu(sb->events)); | |
484 | } | |
485 | ||
3da92f27 | 486 | static void detail_super1(struct supertype *st, char *homehost) |
82d9eba6 | 487 | { |
3da92f27 | 488 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 489 | int i; |
b6750aa8 | 490 | int l = homehost ? strlen(homehost) : 0; |
82d9eba6 | 491 | |
b6750aa8 NB |
492 | printf(" Name : %.32s", sb->set_name); |
493 | if (l > 0 && l < 32 && | |
494 | sb->set_name[l] == ':' && | |
495 | strncmp(sb->set_name, homehost, l) == 0) | |
496 | printf(" (local to host %s)", homehost); | |
497 | printf("\n UUID : "); | |
82d9eba6 | 498 | for (i=0; i<16; i++) { |
82d9eba6 | 499 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 500 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 | 501 | } |
570c0542 | 502 | printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb->events)); |
82d9eba6 NB |
503 | } |
504 | ||
3da92f27 | 505 | static void brief_detail_super1(struct supertype *st) |
82d9eba6 | 506 | { |
3da92f27 | 507 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 NB |
508 | int i; |
509 | ||
947fd4dd NB |
510 | if (sb->set_name[0]) |
511 | printf(" name=%.32s", sb->set_name); | |
82d9eba6 NB |
512 | printf(" UUID="); |
513 | for (i=0; i<16; i++) { | |
82d9eba6 | 514 | if ((i&3)==0 && i != 0) printf(":"); |
34163fc7 | 515 | printf("%02x", sb->set_uuid[i]); |
82d9eba6 NB |
516 | } |
517 | } | |
518 | ||
0d726f17 | 519 | static void export_detail_super1(struct supertype *st) |
54bad364 | 520 | { |
3da92f27 | 521 | struct mdp_superblock_1 *sb = st->sb; |
54bad364 KS |
522 | int i; |
523 | int len = 32; | |
524 | ||
525 | for (i=0; i<32; i++) | |
526 | if (sb->set_name[i] == '\n' || | |
527 | sb->set_name[i] == '\0') { | |
528 | len = i; | |
529 | break; | |
530 | } | |
531 | if (len) | |
532 | printf("MD_NAME=%.*s\n", len, sb->set_name); | |
54bad364 KS |
533 | } |
534 | ||
c7654afc NB |
535 | #endif |
536 | ||
3da92f27 | 537 | static int match_home1(struct supertype *st, char *homehost) |
83b6208e | 538 | { |
3da92f27 | 539 | struct mdp_superblock_1 *sb = st->sb; |
83b6208e NB |
540 | int l = homehost ? strlen(homehost) : 0; |
541 | ||
542 | return (l > 0 && l < 32 && | |
543 | sb->set_name[l] == ':' && | |
544 | strncmp(sb->set_name, homehost, l) == 0); | |
545 | } | |
546 | ||
3da92f27 | 547 | static void uuid_from_super1(struct supertype *st, int uuid[4]) |
82d9eba6 | 548 | { |
3da92f27 | 549 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
550 | char *cuuid = (char*)uuid; |
551 | int i; | |
552 | for (i=0; i<16; i++) | |
553 | cuuid[i] = super->set_uuid[i]; | |
554 | } | |
555 | ||
a5d85af7 | 556 | static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) |
82d9eba6 | 557 | { |
3da92f27 | 558 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 559 | int working = 0; |
f21e18ca | 560 | unsigned int i; |
a5d85af7 N |
561 | unsigned int role; |
562 | unsigned int map_disks = info->array.raid_disks; | |
82d9eba6 | 563 | |
95eeceeb | 564 | memset(info, 0, sizeof(*info)); |
82d9eba6 | 565 | info->array.major_version = 1; |
b8ac1967 | 566 | info->array.minor_version = st->minor_version; |
82d9eba6 NB |
567 | info->array.patch_version = 0; |
568 | info->array.raid_disks = __le32_to_cpu(sb->raid_disks); | |
569 | info->array.level = __le32_to_cpu(sb->level); | |
265e0f17 | 570 | info->array.layout = __le32_to_cpu(sb->layout); |
82d9eba6 NB |
571 | info->array.md_minor = -1; |
572 | info->array.ctime = __le64_to_cpu(sb->ctime); | |
353632d9 | 573 | info->array.utime = __le64_to_cpu(sb->utime); |
bed256c2 | 574 | info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512; |
4855f95c NB |
575 | info->array.state = |
576 | (__le64_to_cpu(sb->resync_offset) >= __le64_to_cpu(sb->size)) | |
577 | ? 1 : 0; | |
353632d9 NB |
578 | |
579 | info->data_offset = __le64_to_cpu(sb->data_offset); | |
580 | info->component_size = __le64_to_cpu(sb->size); | |
82d9eba6 NB |
581 | |
582 | info->disk.major = 0; | |
583 | info->disk.minor = 0; | |
fbf8a0b7 | 584 | info->disk.number = __le32_to_cpu(sb->dev_number); |
82d9eba6 NB |
585 | if (__le32_to_cpu(sb->dev_number) >= __le32_to_cpu(sb->max_dev) || |
586 | __le32_to_cpu(sb->max_dev) > 512) | |
587 | role = 0xfffe; | |
588 | else | |
589 | role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); | |
590 | ||
591 | info->disk.raid_disk = -1; | |
592 | switch(role) { | |
593 | case 0xFFFF: | |
f22385f9 | 594 | info->disk.state = 0; /* spare: not active, not sync, not faulty */ |
82d9eba6 NB |
595 | break; |
596 | case 0xFFFE: | |
597 | info->disk.state = 1; /* faulty */ | |
598 | break; | |
599 | default: | |
600 | info->disk.state = 6; /* active and in sync */ | |
601 | info->disk.raid_disk = role; | |
602 | } | |
603 | info->events = __le64_to_cpu(sb->events); | |
1522c538 | 604 | sprintf(info->text_version, "1.%d", st->minor_version); |
a67dd8cc | 605 | info->safe_mode_delay = 200; |
82d9eba6 NB |
606 | |
607 | memcpy(info->uuid, sb->set_uuid, 16); | |
608 | ||
31317663 NB |
609 | strncpy(info->name, sb->set_name, 32); |
610 | info->name[32] = 0; | |
947fd4dd | 611 | |
921d9e16 N |
612 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RECOVERY_OFFSET)) |
613 | info->recovery_start = __le32_to_cpu(sb->recovery_offset); | |
614 | else | |
615 | info->recovery_start = MaxSector; | |
616 | ||
353632d9 NB |
617 | if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) { |
618 | info->reshape_active = 1; | |
619 | info->reshape_progress = __le64_to_cpu(sb->reshape_position); | |
620 | info->new_level = __le32_to_cpu(sb->new_level); | |
621 | info->delta_disks = __le32_to_cpu(sb->delta_disks); | |
622 | info->new_layout = __le32_to_cpu(sb->new_layout); | |
bed256c2 | 623 | info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9; |
4180aa4d N |
624 | if (info->delta_disks < 0) |
625 | info->array.raid_disks -= info->delta_disks; | |
353632d9 NB |
626 | } else |
627 | info->reshape_active = 0; | |
628 | ||
a5d85af7 N |
629 | if (map) |
630 | for (i=0; i<map_disks; i++) | |
631 | map[i] = 0; | |
f21e18ca | 632 | for (i = 0; i < __le32_to_cpu(sb->max_dev); i++) { |
82d9eba6 | 633 | role = __le16_to_cpu(sb->dev_roles[i]); |
a5d85af7 | 634 | if (/*role == 0xFFFF || */role < (unsigned) info->array.raid_disks) { |
82d9eba6 | 635 | working++; |
a5d85af7 N |
636 | if (map && role < map_disks) |
637 | map[role] = 1; | |
638 | } | |
82d9eba6 NB |
639 | } |
640 | ||
641 | info->array.working_disks = working; | |
642 | } | |
643 | ||
00bbdbda N |
644 | static struct mdinfo *container_content1(struct supertype *st, char *subarray) |
645 | { | |
646 | struct mdinfo *info; | |
647 | ||
648 | if (subarray) | |
649 | return NULL; | |
650 | ||
651 | info = malloc(sizeof(*info)); | |
652 | getinfo_super1(st, info, NULL); | |
653 | return info; | |
654 | } | |
655 | ||
68c7d6d7 | 656 | static int update_super1(struct supertype *st, struct mdinfo *info, |
3da92f27 | 657 | char *update, |
e5eac01f NB |
658 | char *devname, int verbose, |
659 | int uuid_set, char *homehost) | |
82d9eba6 | 660 | { |
5a31170d N |
661 | /* NOTE: for 'assemble' and 'force' we need to return non-zero |
662 | * if any change was made. For others, the return value is | |
663 | * ignored. | |
c4d831e1 | 664 | */ |
82d9eba6 | 665 | int rv = 0; |
3da92f27 | 666 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 667 | |
67a8c82d NB |
668 | if (strcmp(update, "force-one")==0) { |
669 | /* Not enough devices for a working array, | |
670 | * so bring this one up-to-date | |
671 | */ | |
c4d831e1 NB |
672 | if (sb->events != __cpu_to_le64(info->events)) |
673 | rv = 1; | |
6d3d5804 | 674 | sb->events = __cpu_to_le64(info->events); |
1e2b2765 | 675 | } else if (strcmp(update, "force-array")==0) { |
67a8c82d NB |
676 | /* Degraded array and 'force' requests to |
677 | * maybe need to mark it 'clean'. | |
678 | */ | |
82d9eba6 NB |
679 | switch(__le32_to_cpu(sb->level)) { |
680 | case 5: case 4: case 6: | |
681 | /* need to force clean */ | |
b7528a20 | 682 | if (sb->resync_offset != MaxSector) |
c4d831e1 | 683 | rv = 1; |
b7528a20 | 684 | sb->resync_offset = MaxSector; |
82d9eba6 | 685 | } |
1e2b2765 | 686 | } else if (strcmp(update, "assemble")==0) { |
82d9eba6 NB |
687 | int d = info->disk.number; |
688 | int want; | |
689 | if (info->disk.state == 6) | |
a2ce5a1a | 690 | want = info->disk.raid_disk; |
82d9eba6 NB |
691 | else |
692 | want = 0xFFFF; | |
a2ce5a1a N |
693 | if (sb->dev_roles[d] != __cpu_to_le16(want)) { |
694 | sb->dev_roles[d] = __cpu_to_le16(want); | |
82d9eba6 NB |
695 | rv = 1; |
696 | } | |
d43494fc N |
697 | if (info->reshape_active && |
698 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
699 | info->delta_disks >= 0 && | |
700 | info->reshape_progress < __le64_to_cpu(sb->reshape_position)) { | |
701 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
702 | rv = 1; | |
703 | } | |
704 | if (info->reshape_active && | |
705 | sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE) && | |
706 | info->delta_disks < 0 && | |
707 | info->reshape_progress > __le64_to_cpu(sb->reshape_position)) { | |
708 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); | |
709 | rv = 1; | |
710 | } | |
1e2b2765 | 711 | } else if (strcmp(update, "linear-grow-new") == 0) { |
f21e18ca | 712 | unsigned int i; |
1c6cb603 | 713 | int rfd, fd; |
f21e18ca | 714 | unsigned int max = __le32_to_cpu(sb->max_dev); |
f752781f NB |
715 | |
716 | for (i=0 ; i < max ; i++) | |
717 | if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe) | |
718 | break; | |
719 | sb->dev_number = __cpu_to_le32(i); | |
720 | info->disk.number = i; | |
721 | if (max >= __le32_to_cpu(sb->max_dev)) | |
722 | sb->max_dev = __cpu_to_le32(max+1); | |
723 | ||
724 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || | |
725 | read(rfd, sb->device_uuid, 16) != 16) { | |
caa0f6c6 N |
726 | __u32 r[4] = {random(), random(), random(), random()}; |
727 | memcpy(sb->device_uuid, r, 16); | |
f752781f | 728 | } |
7cbeb80e N |
729 | if (rfd >= 0) |
730 | close(rfd); | |
f752781f NB |
731 | |
732 | sb->dev_roles[i] = | |
733 | __cpu_to_le16(info->disk.raid_disk); | |
1c6cb603 N |
734 | |
735 | fd = open(devname, O_RDONLY); | |
736 | if (fd >= 0) { | |
737 | unsigned long long ds; | |
738 | get_dev_size(fd, devname, &ds); | |
739 | close(fd); | |
740 | ds >>= 9; | |
741 | if (__le64_to_cpu(sb->super_offset) < | |
742 | __le64_to_cpu(sb->data_offset)) { | |
743 | sb->data_size = __cpu_to_le64( | |
744 | ds - __le64_to_cpu(sb->data_offset)); | |
745 | } else { | |
746 | ds -= 8*2; | |
747 | ds &= ~(unsigned long long)(4*2-1); | |
748 | sb->super_offset = __cpu_to_le64(ds); | |
749 | sb->data_size = __cpu_to_le64( | |
750 | ds - __le64_to_cpu(sb->data_offset)); | |
751 | } | |
752 | } | |
1e2b2765 | 753 | } else if (strcmp(update, "linear-grow-update") == 0) { |
82d9eba6 | 754 | sb->raid_disks = __cpu_to_le32(info->array.raid_disks); |
f752781f NB |
755 | sb->dev_roles[info->disk.number] = |
756 | __cpu_to_le16(info->disk.raid_disk); | |
1e2b2765 | 757 | } else if (strcmp(update, "resync") == 0) { |
82d9eba6 | 758 | /* make sure resync happens */ |
434b7755 | 759 | sb->resync_offset = 0ULL; |
1e2b2765 | 760 | } else if (strcmp(update, "uuid") == 0) { |
350f29f9 | 761 | copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid); |
bf4fb153 | 762 | |
14263cf1 NB |
763 | if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) { |
764 | struct bitmap_super_s *bm; | |
3da92f27 | 765 | bm = (struct bitmap_super_s*)(st->sb+1024); |
bf4fb153 | 766 | memcpy(bm->uuid, sb->set_uuid, 16); |
14263cf1 | 767 | } |
5a31170d N |
768 | } else if (strcmp(update, "no-bitmap") == 0) { |
769 | sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); | |
1e2b2765 | 770 | } else if (strcmp(update, "homehost") == 0 && |
0f23aa88 | 771 | homehost) { |
0237e0ca NB |
772 | char *c; |
773 | update = "name"; | |
774 | c = strchr(sb->set_name, ':'); | |
775 | if (c) | |
776 | strncpy(info->name, c+1, 31 - (c-sb->set_name)); | |
777 | else | |
778 | strncpy(info->name, sb->set_name, 32); | |
26a0b8fd | 779 | info->name[32] = 0; |
1e2b2765 | 780 | } else if (strcmp(update, "name") == 0) { |
c4f12c13 NB |
781 | if (info->name[0] == 0) |
782 | sprintf(info->name, "%d", info->array.md_minor); | |
783 | memset(sb->set_name, 0, sizeof(sb->set_name)); | |
784 | if (homehost && | |
785 | strchr(info->name, ':') == NULL && | |
786 | strlen(homehost)+1+strlen(info->name) < 32) { | |
787 | strcpy(sb->set_name, homehost); | |
788 | strcat(sb->set_name, ":"); | |
789 | strcat(sb->set_name, info->name); | |
790 | } else | |
791 | strcpy(sb->set_name, info->name); | |
1e2b2765 | 792 | } else if (strcmp(update, "devicesize") == 0 && |
bee8ec56 NB |
793 | __le64_to_cpu(sb->super_offset) < |
794 | __le64_to_cpu(sb->data_offset)) { | |
795 | /* set data_size to device size less data_offset */ | |
796 | struct misc_dev_info *misc = (struct misc_dev_info*) | |
6416d527 | 797 | (st->sb + 1024 + 512); |
eb9199fb NB |
798 | printf("Size was %llu\n", (unsigned long long) |
799 | __le64_to_cpu(sb->data_size)); | |
bee8ec56 NB |
800 | sb->data_size = __cpu_to_le64( |
801 | misc->device_size - __le64_to_cpu(sb->data_offset)); | |
eb9199fb NB |
802 | printf("Size is %llu\n", (unsigned long long) |
803 | __le64_to_cpu(sb->data_size)); | |
1e2b2765 | 804 | } else if (strcmp(update, "_reshape_progress")==0) |
353632d9 | 805 | sb->reshape_position = __cpu_to_le64(info->reshape_progress); |
1e2b2765 N |
806 | else |
807 | rv = -1; | |
82d9eba6 NB |
808 | |
809 | sb->sb_csum = calc_sb_1_csum(sb); | |
810 | return rv; | |
811 | } | |
812 | ||
3da92f27 | 813 | static int init_super1(struct supertype *st, mdu_array_info_t *info, |
3d3dd91e | 814 | unsigned long long size, char *name, char *homehost, int *uuid) |
82d9eba6 | 815 | { |
6416d527 | 816 | struct mdp_superblock_1 *sb; |
82d9eba6 | 817 | int spares; |
34163fc7 | 818 | int rfd; |
05697ec1 | 819 | char defname[10]; |
6416d527 | 820 | |
3d2c4fc7 DW |
821 | if (posix_memalign((void**)&sb, 512, (1024 + 512 + |
822 | sizeof(struct misc_dev_info))) != 0) { | |
823 | fprintf(stderr, Name | |
824 | ": %s could not allocate superblock\n", __func__); | |
825 | return 0; | |
826 | } | |
82d9eba6 NB |
827 | memset(sb, 0, 1024); |
828 | ||
64557c33 | 829 | st->sb = sb; |
ba7eb04f | 830 | if (info == NULL) { |
82d9eba6 NB |
831 | /* zeroing superblock */ |
832 | return 0; | |
05697ec1 | 833 | } |
82d9eba6 NB |
834 | |
835 | spares = info->working_disks - info->active_disks; | |
836 | if (info->raid_disks + spares > 384) { | |
837 | fprintf(stderr, Name ": too many devices requested: %d+%d > %d\n", | |
838 | info->raid_disks , spares, 384); | |
839 | return 0; | |
840 | } | |
841 | ||
82d9eba6 NB |
842 | sb->magic = __cpu_to_le32(MD_SB_MAGIC); |
843 | sb->major_version = __cpu_to_le32(1); | |
844 | sb->feature_map = 0; | |
845 | sb->pad0 = 0; | |
34163fc7 | 846 | |
350f29f9 NB |
847 | if (uuid) |
848 | copy_uuid(sb->set_uuid, uuid, super1.swapuuid); | |
849 | else { | |
3d3dd91e NB |
850 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
851 | read(rfd, sb->set_uuid, 16) != 16) { | |
caa0f6c6 N |
852 | __u32 r[4] = {random(), random(), random(), random()}; |
853 | memcpy(sb->set_uuid, r, 16); | |
3d3dd91e NB |
854 | } |
855 | if (rfd >= 0) close(rfd); | |
34163fc7 | 856 | } |
82d9eba6 | 857 | |
05697ec1 NB |
858 | if (name == NULL || *name == 0) { |
859 | sprintf(defname, "%d", info->md_minor); | |
860 | name = defname; | |
861 | } | |
947fd4dd | 862 | memset(sb->set_name, 0, 32); |
05697ec1 NB |
863 | if (homehost && |
864 | strchr(name, ':')== NULL && | |
865 | strlen(homehost)+1+strlen(name) < 32) { | |
866 | strcpy(sb->set_name, homehost); | |
867 | strcat(sb->set_name, ":"); | |
868 | strcat(sb->set_name, name); | |
869 | } else | |
870 | strcpy(sb->set_name, name); | |
82d9eba6 NB |
871 | |
872 | sb->ctime = __cpu_to_le64((unsigned long long)time(0)); | |
873 | sb->level = __cpu_to_le32(info->level); | |
ea329559 | 874 | sb->layout = __cpu_to_le32(info->layout); |
5dd497ee | 875 | sb->size = __cpu_to_le64(size*2ULL); |
82d9eba6 NB |
876 | sb->chunksize = __cpu_to_le32(info->chunk_size>>9); |
877 | sb->raid_disks = __cpu_to_le32(info->raid_disks); | |
878 | ||
879 | sb->data_offset = __cpu_to_le64(0); | |
880 | sb->data_size = __cpu_to_le64(0); | |
881 | sb->super_offset = __cpu_to_le64(0); | |
882 | sb->recovery_offset = __cpu_to_le64(0); | |
883 | ||
884 | sb->utime = sb->ctime; | |
885 | sb->events = __cpu_to_le64(1); | |
34321279 | 886 | if (info->state & (1<<MD_SB_CLEAN)) |
b7528a20 | 887 | sb->resync_offset = MaxSector; |
82d9eba6 NB |
888 | else |
889 | sb->resync_offset = 0; | |
34163fc7 | 890 | sb->max_dev = __cpu_to_le32((1024- sizeof(struct mdp_superblock_1))/ |
82d9eba6 NB |
891 | sizeof(sb->dev_roles[0])); |
892 | memset(sb->pad3, 0, sizeof(sb->pad3)); | |
893 | ||
894 | memset(sb->dev_roles, 0xff, 1024 - sizeof(struct mdp_superblock_1)); | |
895 | ||
82d9eba6 NB |
896 | return 1; |
897 | } | |
898 | ||
111d01fc NB |
899 | struct devinfo { |
900 | int fd; | |
901 | char *devname; | |
902 | mdu_disk_info_t disk; | |
903 | struct devinfo *next; | |
904 | }; | |
0e600426 | 905 | #ifndef MDASSEMBLE |
82d9eba6 | 906 | /* Add a device to the superblock being created */ |
f20c3968 | 907 | static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk, |
111d01fc | 908 | int fd, char *devname) |
82d9eba6 | 909 | { |
3da92f27 | 910 | struct mdp_superblock_1 *sb = st->sb; |
82d9eba6 | 911 | __u16 *rp = sb->dev_roles + dk->number; |
111d01fc NB |
912 | struct devinfo *di, **dip; |
913 | ||
dfd4d8ee | 914 | if ((dk->state & 6) == 6) /* active, sync */ |
82d9eba6 | 915 | *rp = __cpu_to_le16(dk->raid_disk); |
412ca2e5 | 916 | else if ((dk->state & ~2) == 0) /* active or idle -> spare */ |
82d9eba6 | 917 | *rp = 0xffff; |
34163fc7 | 918 | else |
82d9eba6 | 919 | *rp = 0xfffe; |
111d01fc | 920 | |
f21e18ca | 921 | if (dk->number >= (int)__le32_to_cpu(sb->max_dev) && |
9df04a4f N |
922 | __le32_to_cpu(sb->max_dev) < 384) |
923 | sb->max_dev = __cpu_to_le32(dk->number+1); | |
8844e291 | 924 | |
d2ca6449 NB |
925 | sb->dev_number = __cpu_to_le32(dk->number); |
926 | sb->sb_csum = calc_sb_1_csum(sb); | |
927 | ||
111d01fc NB |
928 | dip = (struct devinfo **)&st->info; |
929 | while (*dip) | |
930 | dip = &(*dip)->next; | |
931 | di = malloc(sizeof(struct devinfo)); | |
932 | di->fd = fd; | |
933 | di->devname = devname; | |
934 | di->disk = *dk; | |
935 | di->next = NULL; | |
936 | *dip = di; | |
f20c3968 DW |
937 | |
938 | return 0; | |
82d9eba6 | 939 | } |
0e600426 | 940 | #endif |
82d9eba6 | 941 | |
3da92f27 | 942 | static void locate_bitmap1(struct supertype *st, int fd); |
14263cf1 | 943 | |
3da92f27 | 944 | static int store_super1(struct supertype *st, int fd) |
82d9eba6 | 945 | { |
3da92f27 | 946 | struct mdp_superblock_1 *sb = st->sb; |
6fbba4c9 | 947 | unsigned long long sb_offset; |
82d9eba6 | 948 | int sbsize; |
5dd497ee | 949 | unsigned long long dsize; |
96395475 | 950 | |
beae1dfe NB |
951 | if (!get_dev_size(fd, NULL, &dsize)) |
952 | return 1; | |
953 | ||
954 | dsize >>= 9; | |
96395475 | 955 | |
5dd497ee | 956 | if (dsize < 24) |
96395475 NB |
957 | return 2; |
958 | ||
959 | /* | |
960 | * Calculate the position of the superblock. | |
961 | * It is always aligned to a 4K boundary and | |
962 | * depending on minor_version, it can be: | |
963 | * 0: At least 8K, but less than 12K, from end of device | |
964 | * 1: At start of device | |
965 | * 2: 4K from start of device. | |
966 | */ | |
967 | switch(st->minor_version) { | |
968 | case 0: | |
5dd497ee | 969 | sb_offset = dsize; |
96395475 NB |
970 | sb_offset -= 8*2; |
971 | sb_offset &= ~(4*2-1); | |
972 | break; | |
973 | case 1: | |
6fbba4c9 | 974 | sb_offset = 0; |
96395475 NB |
975 | break; |
976 | case 2: | |
977 | sb_offset = 4*2; | |
978 | break; | |
979 | default: | |
980 | return -EINVAL; | |
981 | } | |
982 | ||
82d9eba6 | 983 | |
34163fc7 | 984 | |
6fbba4c9 NB |
985 | if (sb_offset != __le64_to_cpu(sb->super_offset) && |
986 | 0 != __le64_to_cpu(sb->super_offset) | |
96395475 NB |
987 | ) { |
988 | fprintf(stderr, Name ": internal error - sb_offset is wrong\n"); | |
989 | abort(); | |
990 | } | |
82d9eba6 | 991 | |
6fbba4c9 | 992 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) |
82d9eba6 NB |
993 | return 3; |
994 | ||
995 | sbsize = sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev); | |
6416d527 | 996 | sbsize = (sbsize+511)&(~511UL); |
82d9eba6 | 997 | |
5ea022a1 | 998 | if (awrite(fd, sb, sbsize) != sbsize) |
82d9eba6 NB |
999 | return 4; |
1000 | ||
14263cf1 NB |
1001 | if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) { |
1002 | struct bitmap_super_s *bm = (struct bitmap_super_s*) | |
41a3b72a | 1003 | (((char*)sb)+1024); |
14263cf1 | 1004 | if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) { |
3da92f27 | 1005 | locate_bitmap1(st, fd); |
5ea022a1 N |
1006 | if (awrite(fd, bm, sizeof(*bm)) != |
1007 | sizeof(*bm)) | |
9fca7d62 | 1008 | return 5; |
14263cf1 NB |
1009 | } |
1010 | } | |
570c0542 | 1011 | fsync(fd); |
82d9eba6 NB |
1012 | return 0; |
1013 | } | |
1014 | ||
3da92f27 | 1015 | static int load_super1(struct supertype *st, int fd, char *devname); |
892debc8 | 1016 | |
2fb749d1 NB |
1017 | static unsigned long choose_bm_space(unsigned long devsize) |
1018 | { | |
1019 | /* if the device is bigger than 8Gig, save 64k for bitmap usage, | |
1020 | * if bigger than 200Gig, save 128k | |
a380e275 N |
1021 | * NOTE: result must be multiple of 4K else bad things happen |
1022 | * on 4K-sector devices. | |
2fb749d1 | 1023 | */ |
69646c14 | 1024 | if (devsize < 64*2) return 0; |
2fb749d1 NB |
1025 | if (devsize - 64*2 >= 200*1024*1024*2) |
1026 | return 128*2; | |
1027 | if (devsize - 4*2 > 8*1024*1024*2) | |
1028 | return 64*2; | |
1029 | return 4*2; | |
1030 | } | |
1031 | ||
e8090005 N |
1032 | static void free_super1(struct supertype *st); |
1033 | ||
111d01fc NB |
1034 | #ifndef MDASSEMBLE |
1035 | static int write_init_super1(struct supertype *st) | |
82d9eba6 | 1036 | { |
3da92f27 | 1037 | struct mdp_superblock_1 *sb = st->sb; |
e8090005 | 1038 | struct supertype *refst; |
dfe47e00 | 1039 | int rfd; |
111d01fc | 1040 | int rv = 0; |
f21e18ca | 1041 | unsigned long long bm_space; |
a380e275 | 1042 | unsigned long long reserved; |
111d01fc | 1043 | struct devinfo *di; |
8fac0577 | 1044 | unsigned long long dsize, array_size; |
f21e18ca | 1045 | unsigned long long sb_offset; |
82d9eba6 | 1046 | |
111d01fc NB |
1047 | for (di = st->info; di && ! rv ; di = di->next) { |
1048 | if (di->disk.state == 1) | |
1049 | continue; | |
a0c8a17f NB |
1050 | if (di->fd < 0) |
1051 | continue; | |
82d9eba6 | 1052 | |
9277cc77 N |
1053 | while (Kill(di->devname, NULL, 0, 1, 1) == 0) |
1054 | ; | |
82d9eba6 | 1055 | |
111d01fc NB |
1056 | sb->dev_number = __cpu_to_le32(di->disk.number); |
1057 | if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY)) | |
1058 | sb->devflags |= __cpu_to_le32(WriteMostly1); | |
892debc8 | 1059 | |
111d01fc NB |
1060 | if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 || |
1061 | read(rfd, sb->device_uuid, 16) != 16) { | |
83208785 N |
1062 | __u32 r[4] = {random(), random(), random(), random()}; |
1063 | memcpy(sb->device_uuid, r, 16); | |
111d01fc | 1064 | } |
83208785 N |
1065 | if (rfd >= 0) |
1066 | close(rfd); | |
1067 | ||
111d01fc NB |
1068 | sb->events = 0; |
1069 | ||
e8090005 N |
1070 | refst = dup_super(st); |
1071 | if (load_super1(refst, di->fd, NULL)==0) { | |
1072 | struct mdp_superblock_1 *refsb = refst->sb; | |
111d01fc NB |
1073 | |
1074 | memcpy(sb->device_uuid, refsb->device_uuid, 16); | |
1075 | if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) { | |
1076 | /* same array, so preserve events and | |
1077 | * dev_number */ | |
1078 | sb->events = refsb->events; | |
1079 | /* bugs in 2.6.17 and earlier mean the | |
1080 | * dev_number chosen in Manage must be preserved | |
1081 | */ | |
1082 | if (get_linux_version() >= 2006018) | |
1083 | sb->dev_number = refsb->dev_number; | |
1084 | } | |
e8090005 | 1085 | free_super1(refst); |
892debc8 | 1086 | } |
e8090005 | 1087 | free(refst); |
34163fc7 | 1088 | |
111d01fc NB |
1089 | if (!get_dev_size(di->fd, NULL, &dsize)) |
1090 | return 1; | |
1091 | dsize >>= 9; | |
82d9eba6 | 1092 | |
111d01fc NB |
1093 | if (dsize < 24) { |
1094 | close(di->fd); | |
1095 | return 2; | |
1096 | } | |
82d9eba6 NB |
1097 | |
1098 | ||
111d01fc NB |
1099 | /* |
1100 | * Calculate the position of the superblock. | |
1101 | * It is always aligned to a 4K boundary and | |
1102 | * depending on minor_version, it can be: | |
1103 | * 0: At least 8K, but less than 12K, from end of device | |
1104 | * 1: At start of device | |
1105 | * 2: 4K from start of device. | |
1106 | * Depending on the array size, we might leave extra space | |
1107 | * for a bitmap. | |
1108 | */ | |
1109 | array_size = __le64_to_cpu(sb->size); | |
1110 | /* work out how much space we left for a bitmap */ | |
1111 | bm_space = choose_bm_space(array_size); | |
1112 | ||
1113 | switch(st->minor_version) { | |
1114 | case 0: | |
1115 | sb_offset = dsize; | |
1116 | sb_offset -= 8*2; | |
1117 | sb_offset &= ~(4*2-1); | |
1118 | sb->super_offset = __cpu_to_le64(sb_offset); | |
1119 | sb->data_offset = __cpu_to_le64(0); | |
f21e18ca | 1120 | if (sb_offset < array_size + bm_space) |
a380e275 | 1121 | bm_space = sb_offset - array_size; |
111d01fc NB |
1122 | sb->data_size = __cpu_to_le64(sb_offset - bm_space); |
1123 | break; | |
1124 | case 1: | |
1125 | sb->super_offset = __cpu_to_le64(0); | |
a380e275 N |
1126 | reserved = bm_space + 4*2; |
1127 | /* Try for multiple of 1Meg so it is nicely aligned */ | |
1128 | #define ONE_MEG (2*1024) | |
1129 | reserved = ((reserved + ONE_MEG-1)/ONE_MEG) * ONE_MEG; | |
1130 | if (reserved + __le64_to_cpu(sb->size) > dsize) | |
1131 | reserved = dsize - __le64_to_cpu(sb->size); | |
1132 | /* force 4K alignment */ | |
1133 | reserved &= ~7ULL; | |
1134 | ||
1135 | sb->data_offset = __cpu_to_le64(reserved); | |
1136 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
111d01fc NB |
1137 | break; |
1138 | case 2: | |
1139 | sb_offset = 4*2; | |
1140 | sb->super_offset = __cpu_to_le64(4*2); | |
1141 | if (4*2 + 4*2 + bm_space + __le64_to_cpu(sb->size) | |
1142 | > dsize) | |
1143 | bm_space = dsize - __le64_to_cpu(sb->size) | |
1144 | - 4*2 - 4*2; | |
a380e275 N |
1145 | |
1146 | reserved = bm_space + 4*2 + 4*2; | |
1147 | /* Try for multiple of 1Meg so it is nicely aligned */ | |
1148 | #define ONE_MEG (2*1024) | |
1149 | reserved = ((reserved + ONE_MEG-1)/ONE_MEG) * ONE_MEG; | |
1150 | if (reserved + __le64_to_cpu(sb->size) > dsize) | |
1151 | reserved = dsize - __le64_to_cpu(sb->size); | |
1152 | /* force 4K alignment */ | |
1153 | reserved &= ~7ULL; | |
1154 | ||
1155 | sb->data_offset = __cpu_to_le64(reserved); | |
1156 | sb->data_size = __cpu_to_le64(dsize - reserved); | |
111d01fc NB |
1157 | break; |
1158 | default: | |
1159 | return -EINVAL; | |
1160 | } | |
82d9eba6 NB |
1161 | |
1162 | ||
111d01fc NB |
1163 | sb->sb_csum = calc_sb_1_csum(sb); |
1164 | rv = store_super1(st, di->fd); | |
1165 | if (rv) | |
1166 | fprintf(stderr, | |
1167 | Name ": failed to write superblock to %s\n", | |
1168 | di->devname); | |
34163fc7 | 1169 | |
111d01fc NB |
1170 | if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1)) |
1171 | rv = st->ss->write_bitmap(st, di->fd); | |
1172 | close(di->fd); | |
1173 | di->fd = -1; | |
1174 | } | |
82d9eba6 NB |
1175 | return rv; |
1176 | } | |
111d01fc | 1177 | #endif |
82d9eba6 | 1178 | |
64557c33 | 1179 | static int compare_super1(struct supertype *st, struct supertype *tst) |
82d9eba6 NB |
1180 | { |
1181 | /* | |
1182 | * return: | |
1183 | * 0 same, or first was empty, and second was copied | |
1184 | * 1 second had wrong number | |
1185 | * 2 wrong uuid | |
1186 | * 3 wrong other info | |
1187 | */ | |
64557c33 NB |
1188 | struct mdp_superblock_1 *first = st->sb; |
1189 | struct mdp_superblock_1 *second = tst->sb; | |
82d9eba6 NB |
1190 | |
1191 | if (second->magic != __cpu_to_le32(MD_SB_MAGIC)) | |
1192 | return 1; | |
1193 | if (second->major_version != __cpu_to_le32(1)) | |
1194 | return 1; | |
1195 | ||
1196 | if (!first) { | |
3d2c4fc7 | 1197 | if (posix_memalign((void**)&first, 512, |
6416d527 | 1198 | 1024 + 512 + |
3d2c4fc7 DW |
1199 | sizeof(struct misc_dev_info)) != 0) { |
1200 | fprintf(stderr, Name | |
1201 | ": %s could not allocate superblock\n", __func__); | |
1202 | return 1; | |
1203 | } | |
6416d527 | 1204 | memcpy(first, second, 1024 + 512 + |
bee8ec56 | 1205 | sizeof(struct misc_dev_info)); |
64557c33 | 1206 | st->sb = first; |
82d9eba6 NB |
1207 | return 0; |
1208 | } | |
1209 | if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0) | |
1210 | return 2; | |
1211 | ||
1212 | if (first->ctime != second->ctime || | |
1213 | first->level != second->level || | |
1214 | first->layout != second->layout || | |
1215 | first->size != second->size || | |
1216 | first->chunksize != second->chunksize || | |
1217 | first->raid_disks != second->raid_disks) | |
1218 | return 3; | |
1219 | return 0; | |
1220 | } | |
1221 | ||
3da92f27 | 1222 | static int load_super1(struct supertype *st, int fd, char *devname) |
82d9eba6 | 1223 | { |
5dd497ee | 1224 | unsigned long long dsize; |
82d9eba6 NB |
1225 | unsigned long long sb_offset; |
1226 | struct mdp_superblock_1 *super; | |
14263cf1 NB |
1227 | int uuid[4]; |
1228 | struct bitmap_super_s *bsb; | |
bee8ec56 | 1229 | struct misc_dev_info *misc; |
82d9eba6 | 1230 | |
3da92f27 | 1231 | free_super1(st); |
82d9eba6 | 1232 | |
a17a3de3 | 1233 | if (st->ss == NULL || st->minor_version == -1) { |
570c0542 | 1234 | int bestvers = -1; |
23dc1ae8 | 1235 | struct supertype tst; |
570c0542 NB |
1236 | __u64 bestctime = 0; |
1237 | /* guess... choose latest ctime */ | |
ef609477 | 1238 | memset(&tst, 0, sizeof(tst)); |
23dc1ae8 NB |
1239 | tst.ss = &super1; |
1240 | for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) { | |
3da92f27 NB |
1241 | switch(load_super1(&tst, fd, devname)) { |
1242 | case 0: super = tst.sb; | |
570c0542 NB |
1243 | if (bestvers == -1 || |
1244 | bestctime < __le64_to_cpu(super->ctime)) { | |
23dc1ae8 | 1245 | bestvers = tst.minor_version; |
570c0542 NB |
1246 | bestctime = __le64_to_cpu(super->ctime); |
1247 | } | |
1248 | free(super); | |
3da92f27 | 1249 | tst.sb = NULL; |
570c0542 | 1250 | break; |
23dc1ae8 | 1251 | case 1: return 1; /*bad device */ |
82d9eba6 NB |
1252 | case 2: break; /* bad, try next */ |
1253 | } | |
1254 | } | |
570c0542 NB |
1255 | if (bestvers != -1) { |
1256 | int rv; | |
23dc1ae8 NB |
1257 | tst.minor_version = bestvers; |
1258 | tst.ss = &super1; | |
1259 | tst.max_devs = 384; | |
3da92f27 | 1260 | rv = load_super1(&tst, fd, devname); |
23dc1ae8 NB |
1261 | if (rv == 0) |
1262 | *st = tst; | |
570c0542 NB |
1263 | return rv; |
1264 | } | |
82d9eba6 NB |
1265 | return 2; |
1266 | } | |
beae1dfe NB |
1267 | if (!get_dev_size(fd, devname, &dsize)) |
1268 | return 1; | |
1269 | dsize >>= 9; | |
82d9eba6 | 1270 | |
5dd497ee | 1271 | if (dsize < 24) { |
82d9eba6 | 1272 | if (devname) |
5dd497ee NB |
1273 | fprintf(stderr, Name ": %s is too small for md: size is %llu sectors.\n", |
1274 | devname, dsize); | |
82d9eba6 NB |
1275 | return 1; |
1276 | } | |
1277 | ||
1278 | /* | |
1279 | * Calculate the position of the superblock. | |
1280 | * It is always aligned to a 4K boundary and | |
14263cf1 | 1281 | * depending on minor_version, it can be: |
82d9eba6 NB |
1282 | * 0: At least 8K, but less than 12K, from end of device |
1283 | * 1: At start of device | |
1284 | * 2: 4K from start of device. | |
1285 | */ | |
1286 | switch(st->minor_version) { | |
1287 | case 0: | |
5dd497ee | 1288 | sb_offset = dsize; |
82d9eba6 NB |
1289 | sb_offset -= 8*2; |
1290 | sb_offset &= ~(4*2-1); | |
1291 | break; | |
1292 | case 1: | |
1293 | sb_offset = 0; | |
1294 | break; | |
1295 | case 2: | |
1296 | sb_offset = 4*2; | |
1297 | break; | |
1298 | default: | |
1299 | return -EINVAL; | |
1300 | } | |
1301 | ||
1302 | ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */ | |
1303 | ||
1304 | ||
1305 | if (lseek64(fd, sb_offset << 9, 0)< 0LL) { | |
1306 | if (devname) | |
1307 | fprintf(stderr, Name ": Cannot seek to superblock on %s: %s\n", | |
1308 | devname, strerror(errno)); | |
1309 | return 1; | |
1310 | } | |
1311 | ||
3d2c4fc7 | 1312 | if (posix_memalign((void**)&super, 512, |
6416d527 | 1313 | 1024 + 512 + |
3d2c4fc7 DW |
1314 | sizeof(struct misc_dev_info)) != 0) { |
1315 | fprintf(stderr, Name ": %s could not allocate superblock\n", | |
1316 | __func__); | |
1317 | return 1; | |
1318 | } | |
82d9eba6 | 1319 | |
5ea022a1 | 1320 | if (aread(fd, super, 1024) != 1024) { |
82d9eba6 NB |
1321 | if (devname) |
1322 | fprintf(stderr, Name ": Cannot read superblock on %s\n", | |
1323 | devname); | |
1324 | free(super); | |
1325 | return 1; | |
1326 | } | |
1327 | ||
1328 | if (__le32_to_cpu(super->magic) != MD_SB_MAGIC) { | |
1329 | if (devname) | |
1330 | fprintf(stderr, Name ": No super block found on %s (Expected magic %08x, got %08x)\n", | |
1331 | devname, MD_SB_MAGIC, __le32_to_cpu(super->magic)); | |
1332 | free(super); | |
1333 | return 2; | |
1334 | } | |
1335 | ||
1336 | if (__le32_to_cpu(super->major_version) != 1) { | |
1337 | if (devname) | |
1338 | fprintf(stderr, Name ": Cannot interpret superblock on %s - version is %d\n", | |
1339 | devname, __le32_to_cpu(super->major_version)); | |
1340 | free(super); | |
1341 | return 2; | |
1342 | } | |
1343 | if (__le64_to_cpu(super->super_offset) != sb_offset) { | |
1344 | if (devname) | |
1345 | fprintf(stderr, Name ": No superblock found on %s (super_offset is wrong)\n", | |
1346 | devname); | |
1347 | free(super); | |
1348 | return 2; | |
1349 | } | |
64557c33 | 1350 | st->sb = super; |
14263cf1 | 1351 | |
bee8ec56 NB |
1352 | bsb = (struct bitmap_super_s *)(((char*)super)+1024); |
1353 | ||
6416d527 | 1354 | misc = (struct misc_dev_info*) (((char*)super)+1024+512); |
bee8ec56 NB |
1355 | misc->device_size = dsize; |
1356 | ||
14263cf1 NB |
1357 | /* Now check on the bitmap superblock */ |
1358 | if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0) | |
1359 | return 0; | |
1360 | /* Read the bitmap superblock and make sure it looks | |
1361 | * valid. If it doesn't clear the bit. An --assemble --force | |
1362 | * should get that written out. | |
1363 | */ | |
3da92f27 | 1364 | locate_bitmap1(st, fd); |
5ea022a1 | 1365 | if (aread(fd, ((char*)super)+1024, 512) |
6416d527 | 1366 | != 512) |
14263cf1 NB |
1367 | goto no_bitmap; |
1368 | ||
3da92f27 | 1369 | uuid_from_super1(st, uuid); |
14263cf1 NB |
1370 | if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC || |
1371 | memcmp(bsb->uuid, uuid, 16) != 0) | |
1372 | goto no_bitmap; | |
1373 | return 0; | |
1374 | ||
1375 | no_bitmap: | |
1376 | super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) & ~1); | |
82d9eba6 NB |
1377 | return 0; |
1378 | } | |
1379 | ||
1380 | ||
1381 | static struct supertype *match_metadata_desc1(char *arg) | |
1382 | { | |
1383 | struct supertype *st = malloc(sizeof(*st)); | |
1384 | if (!st) return st; | |
1385 | ||
ef609477 | 1386 | memset(st, 0, sizeof(*st)); |
d1d599ea | 1387 | st->container_dev = NoMdDev; |
82d9eba6 | 1388 | st->ss = &super1; |
ea329559 | 1389 | st->max_devs = 384; |
64557c33 | 1390 | st->sb = NULL; |
9b2a22d3 N |
1391 | /* leading zeros can be safely ignored. --detail generates them. */ |
1392 | while (*arg == '0') | |
1393 | arg++; | |
1394 | if (strcmp(arg, "1.0") == 0 || | |
1395 | strcmp(arg, "1.00") == 0) { | |
82d9eba6 NB |
1396 | st->minor_version = 0; |
1397 | return st; | |
1398 | } | |
9b2a22d3 | 1399 | if (strcmp(arg, "1.1") == 0 || |
50827504 | 1400 | strcmp(arg, "1.01") == 0 |
7d5c3964 | 1401 | ) { |
82d9eba6 NB |
1402 | st->minor_version = 1; |
1403 | return st; | |
1404 | } | |
9b2a22d3 | 1405 | if (strcmp(arg, "1.2") == 0 || |
26f467a9 | 1406 | #ifndef DEFAULT_OLD_METADATA /* ifdef in super0.c */ |
ad90adb6 | 1407 | strcmp(arg, "default") == 0 || |
26f467a9 | 1408 | #endif /* DEFAULT_OLD_METADATA */ |
9b2a22d3 | 1409 | strcmp(arg, "1.02") == 0) { |
82d9eba6 NB |
1410 | st->minor_version = 2; |
1411 | return st; | |
1412 | } | |
a17a3de3 | 1413 | if (strcmp(arg, "1") == 0 || |
17f25ca6 | 1414 | strcmp(arg, "default") == 0) { |
a17a3de3 DL |
1415 | st->minor_version = -1; |
1416 | return st; | |
1417 | } | |
82d9eba6 NB |
1418 | |
1419 | free(st); | |
1420 | return NULL; | |
1421 | } | |
1422 | ||
34163fc7 NB |
1423 | /* find available size on device with this devsize, using |
1424 | * superblock type st, and reserving 'reserve' sectors for | |
1425 | * a possible bitmap | |
1426 | */ | |
1bf4e2d9 | 1427 | static __u64 avail_size1(struct supertype *st, __u64 devsize) |
82d9eba6 | 1428 | { |
2a528478 | 1429 | struct mdp_superblock_1 *super = st->sb; |
82d9eba6 NB |
1430 | if (devsize < 24) |
1431 | return 0; | |
1432 | ||
2a528478 N |
1433 | if (super == NULL) |
1434 | /* creating: allow suitable space for bitmap */ | |
1435 | devsize -= choose_bm_space(devsize); | |
1436 | #ifndef MDASSEMBLE | |
1437 | else if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) { | |
1438 | /* hot-add. allow for actual size of bitmap */ | |
1439 | struct bitmap_super_s *bsb; | |
1440 | bsb = (struct bitmap_super_s *)(((char*)super)+1024); | |
1441 | devsize -= bitmap_sectors(bsb); | |
1442 | } | |
1443 | #endif | |
21e92547 | 1444 | |
a380e275 N |
1445 | if (st->minor_version < 0) |
1446 | /* not specified, so time to set default */ | |
1447 | st->minor_version = 2; | |
1448 | if (super == NULL && st->minor_version > 0) { | |
1449 | /* haven't committed to a size yet, so allow some | |
1450 | * slack for alignment of data_offset. | |
1451 | * We haven't access to device details so allow | |
1452 | * 1 Meg if bigger than 1Gig | |
1453 | */ | |
1454 | if (devsize > 1024*1024*2) | |
1455 | devsize -= 1024*2; | |
1456 | } | |
34163fc7 NB |
1457 | switch(st->minor_version) { |
1458 | case 0: | |
1bf4e2d9 NB |
1459 | /* at end */ |
1460 | return ((devsize - 8*2 ) & ~(4*2-1)); | |
34163fc7 | 1461 | case 1: |
1bf4e2d9 NB |
1462 | /* at start, 4K for superblock and possible bitmap */ |
1463 | return devsize - 4*2; | |
34163fc7 | 1464 | case 2: |
1bf4e2d9 NB |
1465 | /* 4k from start, 4K for superblock and possible bitmap */ |
1466 | return devsize - (4+4)*2; | |
34163fc7 NB |
1467 | } |
1468 | return 0; | |
1469 | } | |
1470 | ||
1bf4e2d9 | 1471 | static int |
3da92f27 | 1472 | add_internal_bitmap1(struct supertype *st, |
199171a2 NB |
1473 | int *chunkp, int delay, int write_behind, |
1474 | unsigned long long size, | |
21e92547 | 1475 | int may_change, int major) |
34163fc7 NB |
1476 | { |
1477 | /* | |
1bf4e2d9 NB |
1478 | * If not may_change, then this is a 'Grow', and the bitmap |
1479 | * must fit after the superblock. | |
1480 | * If may_change, then this is create, and we can put the bitmap | |
1481 | * before the superblock if we like, or may move the start. | |
199171a2 NB |
1482 | * If !may_change, the bitmap MUST live at offset of 1K, until |
1483 | * we get a sysfs interface. | |
34163fc7 | 1484 | * |
f9c25f1d | 1485 | * size is in sectors, chunk is in bytes !!! |
34163fc7 NB |
1486 | */ |
1487 | ||
1bf4e2d9 | 1488 | unsigned long long bits; |
199171a2 | 1489 | unsigned long long max_bits; |
34163fc7 | 1490 | unsigned long long min_chunk; |
199171a2 | 1491 | long offset; |
f21e18ca | 1492 | unsigned long long chunk = *chunkp; |
37dfc3d6 | 1493 | int room = 0; |
3da92f27 | 1494 | struct mdp_superblock_1 *sb = st->sb; |
34163fc7 | 1495 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + 1024); |
3b7e9d0c | 1496 | int uuid[4]; |
34163fc7 | 1497 | |
199171a2 NB |
1498 | switch(st->minor_version) { |
1499 | case 0: | |
a31128d2 N |
1500 | /* either 3K after the superblock (when hot-add), |
1501 | * or some amount of space before. | |
199171a2 NB |
1502 | */ |
1503 | if (may_change) { | |
1504 | /* We are creating array, so we *know* how much room has | |
1505 | * been left. | |
1506 | */ | |
1507 | offset = 0; | |
2fb749d1 | 1508 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
199171a2 NB |
1509 | } else { |
1510 | room = __le64_to_cpu(sb->super_offset) | |
1511 | - __le64_to_cpu(sb->data_offset) | |
1512 | - __le64_to_cpu(sb->data_size); | |
1513 | /* remove '1 ||' when we can set offset via sysfs */ | |
1514 | if (1 || (room < 3*2 && | |
1515 | __le32_to_cpu(sb->max_dev) <= 384)) { | |
1516 | room = 3*2; | |
1517 | offset = 1*2; | |
1518 | } else { | |
1519 | offset = 0; /* means movable offset */ | |
1520 | } | |
1521 | } | |
1522 | break; | |
1523 | case 1: | |
1524 | case 2: /* between superblock and data */ | |
1525 | if (may_change) { | |
1526 | offset = 4*2; | |
2fb749d1 | 1527 | room = choose_bm_space(__le64_to_cpu(sb->size)); |
199171a2 NB |
1528 | } else { |
1529 | room = __le64_to_cpu(sb->data_offset) | |
1530 | - __le64_to_cpu(sb->super_offset); | |
1531 | if (1 || __le32_to_cpu(sb->max_dev) <= 384) { | |
1532 | room -= 2; | |
1533 | offset = 2; | |
1534 | } else { | |
1535 | room -= 4*2; | |
1536 | offset = 4*2; | |
1537 | } | |
1538 | } | |
1539 | break; | |
ae491d1e NB |
1540 | default: |
1541 | return 0; | |
199171a2 | 1542 | } |
1bf4e2d9 | 1543 | |
199171a2 NB |
1544 | if (chunk == UnSet && room > 128*2) |
1545 | /* Limit to 128K of bitmap when chunk size not requested */ | |
1546 | room = 128*2; | |
1bf4e2d9 | 1547 | |
199171a2 | 1548 | max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8; |
34163fc7 NB |
1549 | |
1550 | min_chunk = 4096; /* sub-page chunks don't work yet.. */ | |
f9c25f1d | 1551 | bits = (size*512)/min_chunk +1; |
34163fc7 NB |
1552 | while (bits > max_bits) { |
1553 | min_chunk *= 2; | |
1554 | bits = (bits+1)/2; | |
1555 | } | |
b8ab2a50 N |
1556 | if (chunk == UnSet) { |
1557 | /* For practical purpose, 64Meg is a good | |
1558 | * default chunk size for internal bitmaps. | |
1559 | */ | |
34163fc7 | 1560 | chunk = min_chunk; |
b8ab2a50 N |
1561 | if (chunk < 64*1024*1024) |
1562 | chunk = 64*1024*1024; | |
1563 | } else if (chunk < min_chunk) | |
34163fc7 | 1564 | return 0; /* chunk size too small */ |
21e92547 NB |
1565 | if (chunk == 0) /* rounding problem */ |
1566 | return 0; | |
34163fc7 | 1567 | |
199171a2 | 1568 | if (offset == 0) { |
a31128d2 N |
1569 | /* start bitmap on a 4K boundary with enough space for |
1570 | * the bitmap | |
1571 | */ | |
199171a2 | 1572 | bits = (size*512) / chunk + 1; |
a31128d2 N |
1573 | room = ((bits+7)/8 + sizeof(bitmap_super_t) +4095)/4096; |
1574 | room *= 8; /* convert 4K blocks to sectors */ | |
199171a2 NB |
1575 | offset = -room; |
1576 | } | |
1577 | ||
1578 | sb->bitmap_offset = __cpu_to_le32(offset); | |
34163fc7 NB |
1579 | |
1580 | sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | 1); | |
29e766a5 | 1581 | memset(bms, 0, sizeof(*bms)); |
34163fc7 | 1582 | bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
dcec9ee5 | 1583 | bms->version = __cpu_to_le32(major); |
3b7e9d0c LB |
1584 | uuid_from_super1(st, uuid); |
1585 | memcpy(bms->uuid, uuid, 16); | |
34163fc7 NB |
1586 | bms->chunksize = __cpu_to_le32(chunk); |
1587 | bms->daemon_sleep = __cpu_to_le32(delay); | |
f9c25f1d | 1588 | bms->sync_size = __cpu_to_le64(size); |
34163fc7 NB |
1589 | bms->write_behind = __cpu_to_le32(write_behind); |
1590 | ||
199171a2 | 1591 | *chunkp = chunk; |
34163fc7 NB |
1592 | return 1; |
1593 | } | |
1594 | ||
1595 | ||
3da92f27 | 1596 | static void locate_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1597 | { |
34163fc7 | 1598 | unsigned long long offset; |
1e0d770c NB |
1599 | struct mdp_superblock_1 *sb; |
1600 | int mustfree = 0; | |
34163fc7 | 1601 | |
3da92f27 NB |
1602 | if (!st->sb) { |
1603 | if (st->ss->load_super(st, fd, NULL)) | |
f6d75de8 | 1604 | return; /* no error I hope... */ |
1e0d770c NB |
1605 | mustfree = 1; |
1606 | } | |
3da92f27 | 1607 | sb = st->sb; |
e478dc86 | 1608 | |
1bf4e2d9 | 1609 | offset = __le64_to_cpu(sb->super_offset); |
68754bd1 | 1610 | offset += (int32_t) __le32_to_cpu(sb->bitmap_offset); |
1e0d770c | 1611 | if (mustfree) |
f6d75de8 | 1612 | free(sb); |
1bf4e2d9 | 1613 | lseek64(fd, offset<<9, 0); |
34163fc7 NB |
1614 | } |
1615 | ||
3da92f27 | 1616 | static int write_bitmap1(struct supertype *st, int fd) |
34163fc7 | 1617 | { |
3da92f27 | 1618 | struct mdp_superblock_1 *sb = st->sb; |
1bf4e2d9 | 1619 | bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+1024); |
34163fc7 NB |
1620 | int rv = 0; |
1621 | ||
1622 | int towrite, n; | |
5ea022a1 | 1623 | char *buf = (char*)(((long)(abuf+4096))&~4095UL); |
34163fc7 | 1624 | |
3da92f27 | 1625 | locate_bitmap1(st, fd); |
34163fc7 | 1626 | |
6416d527 NB |
1627 | memset(buf, 0xff, 4096); |
1628 | memcpy(buf, ((char*)sb)+1024, sizeof(bitmap_super_t)); | |
1629 | ||
1bf4e2d9 NB |
1630 | towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9); |
1631 | towrite = (towrite+7) >> 3; /* bits to bytes */ | |
6416d527 NB |
1632 | towrite += sizeof(bitmap_super_t); |
1633 | towrite = ROUND_UP(towrite, 512); | |
34163fc7 NB |
1634 | while (towrite > 0) { |
1635 | n = towrite; | |
6416d527 NB |
1636 | if (n > 4096) |
1637 | n = 4096; | |
34163fc7 NB |
1638 | n = write(fd, buf, n); |
1639 | if (n > 0) | |
1640 | towrite -= n; | |
1641 | else | |
1642 | break; | |
6416d527 | 1643 | memset(buf, 0xff, 4096); |
34163fc7 NB |
1644 | } |
1645 | fsync(fd); | |
1646 | if (towrite) | |
1647 | rv = -2; | |
1648 | ||
1649 | return rv; | |
82d9eba6 NB |
1650 | } |
1651 | ||
3da92f27 | 1652 | static void free_super1(struct supertype *st) |
df37ffc0 | 1653 | { |
3da92f27 NB |
1654 | if (st->sb) |
1655 | free(st->sb); | |
1cc7f4fe N |
1656 | while (st->info) { |
1657 | struct devinfo *di = st->info; | |
1658 | st->info = di->next; | |
1659 | if (di->fd >= 0) | |
1660 | close(di->fd); | |
1661 | free(di); | |
1662 | } | |
3da92f27 | 1663 | st->sb = NULL; |
df37ffc0 NB |
1664 | } |
1665 | ||
0e600426 | 1666 | #ifndef MDASSEMBLE |
17f25ca6 NB |
1667 | static int validate_geometry1(struct supertype *st, int level, |
1668 | int layout, int raiddisks, | |
c21e737b | 1669 | int *chunk, unsigned long long size, |
2c514b71 NB |
1670 | char *subdev, unsigned long long *freesize, |
1671 | int verbose) | |
17f25ca6 NB |
1672 | { |
1673 | unsigned long long ldsize; | |
1674 | int fd; | |
1675 | ||
b42f577a N |
1676 | if (level == LEVEL_CONTAINER) { |
1677 | if (verbose) | |
1678 | fprintf(stderr, Name ": 1.x metadata does not support containers\n"); | |
17f25ca6 | 1679 | return 0; |
b42f577a | 1680 | } |
bb7295f1 N |
1681 | if (chunk && *chunk == UnSet) |
1682 | *chunk = DEFAULT_CHUNK; | |
1683 | ||
17f25ca6 NB |
1684 | if (!subdev) |
1685 | return 1; | |
1686 | ||
1687 | fd = open(subdev, O_RDONLY|O_EXCL, 0); | |
1688 | if (fd < 0) { | |
2c514b71 NB |
1689 | if (verbose) |
1690 | fprintf(stderr, Name ": super1.x cannot open %s: %s\n", | |
1691 | subdev, strerror(errno)); | |
17f25ca6 NB |
1692 | return 0; |
1693 | } | |
2c514b71 | 1694 | |
17f25ca6 NB |
1695 | if (!get_dev_size(fd, subdev, &ldsize)) { |
1696 | close(fd); | |
1697 | return 0; | |
1698 | } | |
1699 | close(fd); | |
1700 | ||
1701 | *freesize = avail_size1(st, ldsize >> 9); | |
1702 | return 1; | |
1703 | } | |
0e600426 | 1704 | #endif /* MDASSEMBLE */ |
17f25ca6 | 1705 | |
82d9eba6 | 1706 | struct superswitch super1 = { |
c7654afc | 1707 | #ifndef MDASSEMBLE |
82d9eba6 NB |
1708 | .examine_super = examine_super1, |
1709 | .brief_examine_super = brief_examine_super1, | |
0d726f17 | 1710 | .export_examine_super = export_examine_super1, |
82d9eba6 NB |
1711 | .detail_super = detail_super1, |
1712 | .brief_detail_super = brief_detail_super1, | |
0d726f17 | 1713 | .export_detail_super = export_detail_super1, |
111d01fc | 1714 | .write_init_super = write_init_super1, |
0e600426 N |
1715 | .validate_geometry = validate_geometry1, |
1716 | .add_to_super = add_to_super1, | |
c7654afc | 1717 | #endif |
83b6208e | 1718 | .match_home = match_home1, |
82d9eba6 NB |
1719 | .uuid_from_super = uuid_from_super1, |
1720 | .getinfo_super = getinfo_super1, | |
00bbdbda | 1721 | .container_content = container_content1, |
82d9eba6 | 1722 | .update_super = update_super1, |
82d9eba6 | 1723 | .init_super = init_super1, |
82d9eba6 | 1724 | .store_super = store_super1, |
82d9eba6 NB |
1725 | .compare_super = compare_super1, |
1726 | .load_super = load_super1, | |
1727 | .match_metadata_desc = match_metadata_desc1, | |
1728 | .avail_size = avail_size1, | |
34163fc7 NB |
1729 | .add_internal_bitmap = add_internal_bitmap1, |
1730 | .locate_bitmap = locate_bitmap1, | |
1731 | .write_bitmap = write_bitmap1, | |
df37ffc0 | 1732 | .free_super = free_super1, |
f277ce36 NB |
1733 | #if __BYTE_ORDER == BIG_ENDIAN |
1734 | .swapuuid = 0, | |
1735 | #else | |
1736 | .swapuuid = 1, | |
1737 | #endif | |
31015d57 | 1738 | .name = "1.x", |
82d9eba6 | 1739 | }; |