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Commit | Line | Data |
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64c4757e | 1 | /* |
9a9dab36 | 2 | * mdadm - manage Linux "md" devices aka RAID arrays. |
64c4757e | 3 | * |
ca3b6696 | 4 | * Copyright (C) 2001-2012 Neil Brown <neilb@suse.de> |
64c4757e 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> |
64c4757e NB |
23 | */ |
24 | ||
ca3b6696 | 25 | #include "mdadm.h" |
682c7051 NB |
26 | #include "md_u.h" |
27 | #include "md_p.h" | |
60248f74 | 28 | #include <ctype.h> |
64c4757e | 29 | |
a18a888e DW |
30 | static int default_layout(struct supertype *st, int level, int verbose) |
31 | { | |
32 | int layout = UnSet; | |
33 | ||
30f58b22 DW |
34 | if (st && st->ss->default_geometry) |
35 | st->ss->default_geometry(st, &level, &layout, NULL); | |
a18a888e DW |
36 | |
37 | if (layout == UnSet) | |
38 | switch(level) { | |
39 | default: /* no layout */ | |
40 | layout = 0; | |
41 | break; | |
42 | case 10: | |
43 | layout = 0x102; /* near=2, far=1 */ | |
44 | if (verbose > 0) | |
e7b84f9d | 45 | pr_err("layout defaults to n2\n"); |
a18a888e DW |
46 | break; |
47 | case 5: | |
48 | case 6: | |
49 | layout = map_name(r5layout, "default"); | |
50 | if (verbose > 0) | |
e7b84f9d | 51 | pr_err("layout defaults to %s\n", map_num(r5layout, layout)); |
a18a888e DW |
52 | break; |
53 | case LEVEL_FAULTY: | |
54 | layout = map_name(faultylayout, "default"); | |
55 | ||
56 | if (verbose > 0) | |
e7b84f9d | 57 | pr_err("layout defaults to %s\n", map_num(faultylayout, layout)); |
a18a888e DW |
58 | break; |
59 | } | |
60 | ||
61 | return layout; | |
62 | } | |
63 | ||
7f91af49 | 64 | int Create(struct supertype *st, char *mddev, |
171dccc8 | 65 | char *name, int *uuid, |
a655e550 | 66 | int subdevs, struct mddev_dev *devlist, |
99cc42f4 | 67 | struct shape *s, |
40c9a66a | 68 | struct context *c, unsigned long long data_offset) |
64c4757e | 69 | { |
682c7051 NB |
70 | /* |
71 | * Create a new raid array. | |
72 | * | |
73 | * First check that necessary details are available | |
74 | * (i.e. level, raid-disks) | |
75 | * | |
76 | * Then check each disk to see what might be on it | |
77 | * and report anything interesting. | |
78 | * | |
79 | * If anything looks odd, and runstop not set, | |
80 | * abort. | |
81 | * | |
82 | * SET_ARRAY_INFO and ADD_NEW_DISK, and | |
82d9eba6 | 83 | * if runstop==run, or raiddisks disks were used, |
682c7051 NB |
84 | * RUN_ARRAY |
85 | */ | |
7f91af49 | 86 | int mdfd; |
b5e64645 | 87 | unsigned long long minsize=0, maxsize=0; |
cd29a5c8 NB |
88 | char *mindisc = NULL; |
89 | char *maxdisc = NULL; | |
c913b90e | 90 | int dnum; |
a655e550 | 91 | struct mddev_dev *dv; |
682c7051 | 92 | int fail=0, warn=0; |
82b27616 | 93 | struct stat stb; |
82d9eba6 | 94 | int first_missing = subdevs * 2; |
6fb79233 | 95 | int second_missing = subdevs * 2; |
52826846 | 96 | int missing_disks = 0; |
82d9eba6 | 97 | int insert_point = subdevs * 2; /* where to insert a missing drive */ |
d2ca6449 | 98 | int total_slots; |
4b1ac34b | 99 | int pass; |
82d9eba6 NB |
100 | int vers; |
101 | int rv; | |
c82f047c | 102 | int bitmap_fd; |
5f8097be | 103 | int have_container = 0; |
0e600426 | 104 | int container_fd = -1; |
a931db9e | 105 | int need_mdmon = 0; |
f9c25f1d | 106 | unsigned long long bitmapsize; |
d2ca6449 | 107 | struct mdinfo info, *infos; |
b8ac1967 | 108 | int did_default = 0; |
a18a888e | 109 | int do_default_layout = 0; |
c21e737b | 110 | int do_default_chunk = 0; |
8ed3e5e1 | 111 | unsigned long safe_mode_delay = 0; |
a04d5763 | 112 | char chosen_name[1024]; |
ad5bc697 | 113 | struct map_ent *map = NULL; |
8592f29d | 114 | unsigned long long newsize; |
682c7051 | 115 | |
943eafef | 116 | int major_num = BITMAP_MAJOR_HI; |
dcec9ee5 | 117 | |
06c7f68e | 118 | memset(&info, 0, sizeof(info)); |
99cc42f4 N |
119 | if (s->level == UnSet && st && st->ss->default_geometry) |
120 | st->ss->default_geometry(st, &s->level, NULL, NULL); | |
121 | if (s->level == UnSet) { | |
e7b84f9d | 122 | pr_err("a RAID level is needed to create an array.\n"); |
682c7051 NB |
123 | return 1; |
124 | } | |
99cc42f4 | 125 | if (s->raiddisks < 4 && s->level == 6) { |
e7b84f9d | 126 | pr_err("at least 4 raid-devices needed for level 6\n"); |
98c6faba NB |
127 | return 1; |
128 | } | |
99cc42f4 | 129 | if (s->raiddisks > 256 && s->level == 6) { |
e7b84f9d | 130 | pr_err("no more than 256 raid-devices supported for level 6\n"); |
98c6faba NB |
131 | return 1; |
132 | } | |
99cc42f4 | 133 | if (s->raiddisks < 2 && s->level >= 4) { |
e7b84f9d | 134 | pr_err("at least 2 raid-devices needed for level 4 or 5\n"); |
52826846 NB |
135 | return 1; |
136 | } | |
99cc42f4 | 137 | if (s->level <= 0 && s->sparedisks) { |
e7b84f9d | 138 | pr_err("This level does not support spare devices\n"); |
570510ba NB |
139 | return 1; |
140 | } | |
5f8097be NB |
141 | |
142 | if (subdevs == 1 && strcmp(devlist->devname, "missing") != 0) { | |
143 | /* If given a single device, it might be a container, and we can | |
144 | * extract a device list from there | |
145 | */ | |
146 | mdu_array_info_t inf; | |
147 | int fd; | |
148 | ||
149 | memset(&inf, 0, sizeof(inf)); | |
37ea3936 | 150 | fd = open(devlist->devname, O_RDONLY); |
5f8097be NB |
151 | if (fd >= 0 && |
152 | ioctl(fd, GET_ARRAY_INFO, &inf) == 0 && | |
153 | inf.raid_disks == 0) { | |
154 | /* yep, looks like a container */ | |
155 | if (st) { | |
0fb69d1d N |
156 | rv = st->ss->load_container(st, fd, |
157 | devlist->devname); | |
5f8097be NB |
158 | if (rv == 0) |
159 | have_container = 1; | |
160 | } else { | |
0fb69d1d | 161 | st = super_by_fd(fd, NULL); |
5f8097be | 162 | if (st && !(rv = st->ss-> |
0fb69d1d N |
163 | load_container(st, fd, |
164 | devlist->devname))) | |
5f8097be NB |
165 | have_container = 1; |
166 | else | |
167 | st = NULL; | |
168 | } | |
18fde300 | 169 | if (have_container) { |
99cc42f4 | 170 | subdevs = s->raiddisks; |
18fde300 DW |
171 | first_missing = subdevs * 2; |
172 | second_missing = subdevs * 2; | |
173 | insert_point = subdevs * 2; | |
174 | } | |
5f8097be NB |
175 | } |
176 | if (fd >= 0) | |
177 | close(fd); | |
5f8097be | 178 | } |
99cc42f4 | 179 | if (st && st->ss->external && s->sparedisks) { |
e7b84f9d N |
180 | pr_err("This metadata type does not support " |
181 | "spare disks at create time\n"); | |
ffcfc735 N |
182 | return 1; |
183 | } | |
99cc42f4 N |
184 | if (subdevs > s->raiddisks+s->sparedisks) { |
185 | pr_err("You have listed more devices (%d) than are in the array(%d)!\n", subdevs, s->raiddisks+s->sparedisks); | |
52826846 | 186 | return 1; |
682c7051 | 187 | } |
99cc42f4 | 188 | if (!have_container && subdevs < s->raiddisks+s->sparedisks) { |
e7b84f9d | 189 | pr_err("You haven't given enough devices (real or missing) to create this array\n"); |
52826846 NB |
190 | return 1; |
191 | } | |
99cc42f4 | 192 | if (s->bitmap_file && s->level <= 0) { |
e7b84f9d | 193 | pr_err("bitmaps not meaningful with level %s\n", |
99cc42f4 | 194 | map_num(pers, s->level)?:"given"); |
5b28bd56 NB |
195 | return 1; |
196 | } | |
52826846 | 197 | |
682c7051 | 198 | /* now set some defaults */ |
b5e64645 | 199 | |
99cc42f4 | 200 | if (s->layout == UnSet) { |
a18a888e | 201 | do_default_layout = 1; |
99cc42f4 | 202 | s->layout = default_layout(st, s->level, c->verbose); |
a18a888e | 203 | } |
682c7051 | 204 | |
99cc42f4 | 205 | if (s->level == 10) |
e5329c37 | 206 | /* check layout fits in array*/ |
99cc42f4 | 207 | if ((s->layout&255) * ((s->layout>>8)&255) > s->raiddisks) { |
e7b84f9d | 208 | pr_err("that layout requires at least %d devices\n", |
99cc42f4 | 209 | (s->layout&255) * ((s->layout>>8)&255)); |
e5329c37 NB |
210 | return 1; |
211 | } | |
212 | ||
99cc42f4 | 213 | switch(s->level) { |
aa88f531 NB |
214 | case 4: |
215 | case 5: | |
e5329c37 | 216 | case 10: |
98c6faba | 217 | case 6: |
aa88f531 | 218 | case 0: |
99cc42f4 N |
219 | if (s->chunk == 0 || s->chunk == UnSet) { |
220 | s->chunk = UnSet; | |
c21e737b CA |
221 | do_default_chunk = 1; |
222 | /* chunk will be set later */ | |
bb7295f1 | 223 | } |
5f175898 N |
224 | break; |
225 | case LEVEL_LINEAR: | |
226 | /* a chunksize of zero 0s perfectly valid (and preferred) since 2.6.16 */ | |
99cc42f4 N |
227 | if (get_linux_version() < 2006016 && s->chunk == 0) { |
228 | s->chunk = 64; | |
171dccc8 | 229 | if (c->verbose > 0) |
e7b84f9d | 230 | pr_err("chunk size defaults to 64K\n"); |
aa88f531 NB |
231 | } |
232 | break; | |
570510ba | 233 | case 1: |
08e43379 | 234 | case LEVEL_FAULTY: |
570510ba | 235 | case LEVEL_MULTIPATH: |
17f25ca6 | 236 | case LEVEL_CONTAINER: |
99cc42f4 N |
237 | if (s->chunk) { |
238 | s->chunk = 0; | |
171dccc8 | 239 | if (c->verbose > 0) |
e7b84f9d | 240 | pr_err("chunk size ignored for this level\n"); |
aa88f531 NB |
241 | } |
242 | break; | |
570510ba | 243 | default: |
99cc42f4 | 244 | pr_err("unknown level %d\n", s->level); |
570510ba | 245 | return 1; |
682c7051 | 246 | } |
99cc42f4 | 247 | if (s->size == MAX_SIZE) |
d04f65f4 | 248 | /* use '0' to mean 'max' now... */ |
99cc42f4 N |
249 | s->size = 0; |
250 | if (s->size && s->chunk && s->chunk != UnSet) | |
251 | s->size &= ~(unsigned long long)(s->chunk - 1); | |
252 | newsize = s->size * 2; | |
253 | if (st && ! st->ss->validate_geometry(st, s->level, s->layout, s->raiddisks, | |
af4348dd | 254 | &s->chunk, s->size*2, |
40c9a66a | 255 | data_offset, NULL, |
af4348dd | 256 | &newsize, c->verbose>=0)) |
17f25ca6 | 257 | return 1; |
bb7295f1 | 258 | |
99cc42f4 N |
259 | if (s->chunk && s->chunk != UnSet) { |
260 | newsize &= ~(unsigned long long)(s->chunk*2 - 1); | |
64385908 CA |
261 | if (do_default_chunk) { |
262 | /* default chunk was just set */ | |
171dccc8 | 263 | if (c->verbose > 0) |
e7b84f9d | 264 | pr_err("chunk size " |
99cc42f4 N |
265 | "defaults to %dK\n", s->chunk); |
266 | s->size &= ~(unsigned long long)(s->chunk - 1); | |
64385908 CA |
267 | do_default_chunk = 0; |
268 | } | |
bb7295f1 | 269 | } |
64385908 | 270 | |
99cc42f4 N |
271 | if (s->size == 0) { |
272 | s->size = newsize / 2; | |
273 | if (s->level == 1) | |
ae6c05ad N |
274 | /* If this is ever reshaped to RAID5, we will |
275 | * need a chunksize. So round it off a bit | |
276 | * now just to be safe | |
277 | */ | |
99cc42f4 | 278 | s->size &= ~(64ULL-1); |
ae6c05ad | 279 | |
99cc42f4 N |
280 | if (s->size && c->verbose > 0) |
281 | pr_err("setting size to %lluK\n", s->size); | |
8592f29d | 282 | } |
17f25ca6 | 283 | |
682c7051 | 284 | /* now look at the subdevs */ |
06c7f68e NB |
285 | info.array.active_disks = 0; |
286 | info.array.working_disks = 0; | |
c913b90e | 287 | dnum = 0; |
8592f29d | 288 | for (dv=devlist; dv && !have_container; dv=dv->next, dnum++) { |
cd29a5c8 | 289 | char *dname = dv->devname; |
17f25ca6 | 290 | unsigned long long freesize; |
e9b11fee | 291 | int dfd; |
72ca9bcf | 292 | char *doff; |
e9b11fee | 293 | |
cd29a5c8 | 294 | if (strcasecmp(dname, "missing")==0) { |
c913b90e NB |
295 | if (first_missing > dnum) |
296 | first_missing = dnum; | |
6fb79233 NB |
297 | if (second_missing > dnum && dnum > first_missing) |
298 | second_missing = dnum; | |
52826846 NB |
299 | missing_disks ++; |
300 | continue; | |
301 | } | |
72ca9bcf N |
302 | if (data_offset != VARIABLE_OFFSET) { |
303 | doff = strchr(dname, ':'); | |
304 | if (doff) { | |
305 | *doff++ = 0; | |
306 | dv->data_offset = parse_size(doff); | |
307 | } else | |
308 | dv->data_offset = INVALID_SECTORS; | |
309 | } else | |
310 | dv->data_offset = data_offset; | |
311 | ||
58b3c697 | 312 | dfd = open(dname, O_RDONLY); |
e9b11fee | 313 | if (dfd < 0) { |
e7b84f9d | 314 | pr_err("cannot open %s: %s\n", |
e9b11fee N |
315 | dname, strerror(errno)); |
316 | exit(2); | |
317 | } | |
318 | if (fstat(dfd, &stb) != 0 || | |
319 | (stb.st_mode & S_IFMT) != S_IFBLK) { | |
320 | close(dfd); | |
e7b84f9d | 321 | pr_err("%s is not a block device\n", |
e9b11fee N |
322 | dname); |
323 | exit(2); | |
324 | } | |
325 | close(dfd); | |
06c7f68e | 326 | info.array.working_disks++; |
99cc42f4 | 327 | if (dnum < s->raiddisks) |
06c7f68e | 328 | info.array.active_disks++; |
058574b1 | 329 | if (st == NULL) { |
8aec876d | 330 | struct createinfo *ci = conf_get_create_info(); |
058574b1 NB |
331 | if (ci) |
332 | st = ci->supertype; | |
333 | } | |
576d6d83 NB |
334 | if (st == NULL) { |
335 | /* Need to choose a default metadata, which is different | |
17f25ca6 | 336 | * depending on geometry of array. |
576d6d83 NB |
337 | */ |
338 | int i; | |
339 | char *name = "default"; | |
17f25ca6 | 340 | for(i=0; !st && superlist[i]; i++) { |
576d6d83 | 341 | st = superlist[i]->match_metadata_desc(name); |
ecbd9e81 N |
342 | if (!st) |
343 | continue; | |
a18a888e | 344 | if (do_default_layout) |
99cc42f4 | 345 | s->layout = default_layout(st, s->level, c->verbose); |
ecbd9e81 | 346 | switch (st->ss->validate_geometry( |
99cc42f4 | 347 | st, s->level, s->layout, s->raiddisks, |
af4348dd | 348 | &s->chunk, s->size*2, |
72ca9bcf | 349 | dv->data_offset, dname, |
af4348dd | 350 | &freesize, c->verbose > 0)) { |
ecbd9e81 N |
351 | case -1: /* Not valid, message printed, and not |
352 | * worth checking any further */ | |
353 | exit(2); | |
354 | break; | |
355 | case 0: /* Geometry not valid */ | |
55425f27 | 356 | free(st); |
17f25ca6 | 357 | st = NULL; |
99cc42f4 | 358 | s->chunk = do_default_chunk ? UnSet : s->chunk; |
ecbd9e81 N |
359 | break; |
360 | case 1: /* All happy */ | |
361 | break; | |
55425f27 | 362 | } |
17f25ca6 | 363 | } |
576d6d83 NB |
364 | |
365 | if (!st) { | |
58b3c697 N |
366 | int dfd = open(dname, O_RDONLY|O_EXCL); |
367 | if (dfd < 0) { | |
e7b84f9d | 368 | pr_err("cannot open %s: %s\n", |
58b3c697 N |
369 | dname, strerror(errno)); |
370 | exit(2); | |
371 | } | |
e7b84f9d | 372 | pr_err("device %s not suitable " |
17f25ca6 NB |
373 | "for any style of array\n", |
374 | dname); | |
576d6d83 NB |
375 | exit(2); |
376 | } | |
b8ac1967 | 377 | if (st->ss != &super0 || |
576d6d83 | 378 | st->minor_version != 90) |
b8ac1967 | 379 | did_default = 1; |
17f25ca6 | 380 | } else { |
a18a888e | 381 | if (do_default_layout) |
99cc42f4 N |
382 | s->layout = default_layout(st, s->level, 0); |
383 | if (!st->ss->validate_geometry(st, s->level, s->layout, | |
384 | s->raiddisks, | |
af4348dd | 385 | &s->chunk, s->size*2, |
72ca9bcf | 386 | dv->data_offset, |
af4348dd | 387 | dname, &freesize, |
171dccc8 | 388 | c->verbose >= 0)) { |
17f25ca6 | 389 | |
e7b84f9d N |
390 | pr_err("%s is not suitable for " |
391 | "this array.\n", | |
392 | dname); | |
17f25ca6 NB |
393 | fail = 1; |
394 | continue; | |
395 | } | |
682c7051 | 396 | } |
82d9eba6 NB |
397 | |
398 | freesize /= 2; /* convert to K */ | |
99cc42f4 | 399 | if (s->chunk && s->chunk != UnSet) { |
d2cd3ffc | 400 | /* round to chunk size */ |
99cc42f4 | 401 | freesize = freesize & ~(s->chunk-1); |
64385908 CA |
402 | if (do_default_chunk) { |
403 | /* default chunk was just set */ | |
171dccc8 | 404 | if (c->verbose > 0) |
e7b84f9d | 405 | pr_err("chunk size " |
99cc42f4 N |
406 | "defaults to %dK\n", s->chunk); |
407 | s->size &= ~(unsigned long long)(s->chunk - 1); | |
64385908 CA |
408 | do_default_chunk = 0; |
409 | } | |
d2cd3ffc | 410 | } |
682c7051 | 411 | |
99cc42f4 | 412 | if (s->size && freesize < s->size) { |
e7b84f9d | 413 | pr_err("%s is smaller than given size." |
17f25ca6 | 414 | " %lluK < %lluK + metadata\n", |
99cc42f4 | 415 | dname, freesize, s->size); |
52826846 | 416 | fail = 1; |
52826846 | 417 | continue; |
682c7051 | 418 | } |
cd29a5c8 NB |
419 | if (maxdisc == NULL || (maxdisc && freesize > maxsize)) { |
420 | maxdisc = dname; | |
52826846 | 421 | maxsize = freesize; |
682c7051 | 422 | } |
cd29a5c8 NB |
423 | if (mindisc ==NULL || (mindisc && freesize < minsize)) { |
424 | mindisc = dname; | |
52826846 | 425 | minsize = freesize; |
682c7051 | 426 | } |
171dccc8 | 427 | if (c->runstop != 1 || c->verbose >= 0) { |
37ea3936 | 428 | int fd = open(dname, O_RDONLY); |
b6e63da4 | 429 | if (fd <0 ) { |
e7b84f9d | 430 | pr_err("Cannot open %s: %s\n", |
b6e63da4 NB |
431 | dname, strerror(errno)); |
432 | fail=1; | |
433 | continue; | |
434 | } | |
dab6685f NB |
435 | warn |= check_ext2(fd, dname); |
436 | warn |= check_reiser(fd, dname); | |
437 | warn |= check_raid(fd, dname); | |
034b203a TM |
438 | if (strcmp(st->ss->name, "1.x") == 0 && |
439 | st->minor_version >= 1) | |
440 | /* metadata at front */ | |
53ed6ac3 | 441 | warn |= check_partitions(fd, dname, 0, 0); |
99cc42f4 N |
442 | else if (s->level == 1 || s->level == LEVEL_CONTAINER |
443 | || (s->level == 0 && s->raiddisks == 1)) | |
034b203a | 444 | /* partitions could be meaningful */ |
99cc42f4 | 445 | warn |= check_partitions(fd, dname, freesize*2, s->size*2); |
034b203a TM |
446 | else |
447 | /* partitions cannot be meaningful */ | |
53ed6ac3 | 448 | warn |= check_partitions(fd, dname, 0, 0); |
034b203a | 449 | if (strcmp(st->ss->name, "1.x") == 0 && |
a0962fe9 N |
450 | st->minor_version >= 1 && |
451 | did_default && | |
99cc42f4 | 452 | s->level == 1 && |
034b203a TM |
453 | (warn & 1024) == 0) { |
454 | warn |= 1024; | |
e7b84f9d | 455 | pr_err("Note: this array has metadata at the start and\n" |
a0962fe9 | 456 | " may not be suitable as a boot device. If you plan to\n" |
cc86f89c | 457 | " store '/boot' on this device please ensure that\n" |
a0962fe9 | 458 | " your boot-loader understands md/v1.x metadata, or use\n" |
cc86f89c | 459 | " --metadata=0.90\n"); |
a0962fe9 | 460 | } |
b6e63da4 | 461 | close(fd); |
dab6685f | 462 | } |
682c7051 | 463 | } |
99cc42f4 | 464 | if (s->raiddisks + s->sparedisks > st->max_devs) { |
e7b84f9d | 465 | pr_err("Too many devices:" |
acab7bb1 N |
466 | " %s metadata only supports %d\n", |
467 | st->ss->name, st->max_devs); | |
468 | return 1; | |
469 | } | |
8592f29d | 470 | if (have_container) |
99cc42f4 | 471 | info.array.working_disks = s->raiddisks; |
682c7051 | 472 | if (fail) { |
e7b84f9d | 473 | pr_err("create aborted\n"); |
52826846 | 474 | return 1; |
682c7051 | 475 | } |
99cc42f4 | 476 | if (s->size == 0) { |
5f8097be | 477 | if (mindisc == NULL && !have_container) { |
e7b84f9d | 478 | pr_err("no size and no drives given - aborting create.\n"); |
52826846 NB |
479 | return 1; |
480 | } | |
99cc42f4 N |
481 | if (s->level > 0 || s->level == LEVEL_MULTIPATH |
482 | || s->level == LEVEL_FAULTY | |
b8ac1967 | 483 | || st->ss->external ) { |
b5e64645 | 484 | /* size is meaningful */ |
99cc42f4 N |
485 | if (!st->ss->validate_geometry(st, s->level, s->layout, |
486 | s->raiddisks, | |
487 | &s->chunk, minsize*2, | |
40c9a66a | 488 | data_offset, |
2c514b71 | 489 | NULL, NULL, 0)) { |
99cc42f4 | 490 | pr_err("devices too large for RAID level %d\n", s->level); |
b5e64645 NB |
491 | return 1; |
492 | } | |
99cc42f4 N |
493 | s->size = minsize; |
494 | if (s->level == 1) | |
ae6c05ad N |
495 | /* If this is ever reshaped to RAID5, we will |
496 | * need a chunksize. So round it off a bit | |
497 | * now just to be safe | |
498 | */ | |
99cc42f4 | 499 | s->size &= ~(64ULL-1); |
171dccc8 | 500 | if (c->verbose > 0) |
99cc42f4 | 501 | pr_err("size set to %lluK\n", s->size); |
b5e64645 | 502 | } |
682c7051 | 503 | } |
99cc42f4 | 504 | if (!have_container && s->level > 0 && ((maxsize-s->size)*100 > maxsize)) { |
171dccc8 | 505 | if (c->runstop != 1 || c->verbose >= 0) |
e7b84f9d | 506 | pr_err("largest drive (%s) exceeds size (%lluK) by more than 1%%\n", |
99cc42f4 | 507 | maxdisc, s->size); |
52826846 | 508 | warn = 1; |
682c7051 NB |
509 | } |
510 | ||
9eafa1de | 511 | if (st->ss->detail_platform && st->ss->detail_platform(0, 1, NULL) != 0) { |
171dccc8 | 512 | if (c->runstop != 1 || c->verbose >= 0) |
e7b84f9d | 513 | pr_err("%s unable to enumerate platform support\n" |
5615172f DW |
514 | " array may not be compatible with hardware/firmware\n", |
515 | st->ss->name); | |
516 | warn = 1; | |
517 | } | |
518 | ||
682c7051 | 519 | if (warn) { |
171dccc8 | 520 | if (c->runstop!= 1) { |
52826846 | 521 | if (!ask("Continue creating array? ")) { |
e7b84f9d | 522 | pr_err("create aborted.\n"); |
52826846 NB |
523 | return 1; |
524 | } | |
525 | } else { | |
171dccc8 | 526 | if (c->verbose > 0) |
e7b84f9d | 527 | pr_err("creation continuing despite oddities due to --run\n"); |
682c7051 | 528 | } |
682c7051 NB |
529 | } |
530 | ||
66f8bbbe | 531 | /* If this is raid4/5, we want to configure the last active slot |
52826846 | 532 | * as missing, so that a reconstruct happens (faster than re-parity) |
98c6faba | 533 | * FIX: Can we do this for raid6 as well? |
52826846 | 534 | */ |
87b47257 | 535 | if (st->ss->external == 0 && |
99cc42f4 N |
536 | s->assume_clean==0 && c->force == 0 && first_missing >= s->raiddisks) { |
537 | switch ( s->level ) { | |
66f8bbbe | 538 | case 4: |
98c6faba | 539 | case 5: |
99cc42f4 N |
540 | insert_point = s->raiddisks-1; |
541 | s->sparedisks++; | |
06c7f68e | 542 | info.array.active_disks--; |
98c6faba NB |
543 | missing_disks++; |
544 | break; | |
545 | default: | |
546 | break; | |
547 | } | |
52826846 | 548 | } |
6fb79233 NB |
549 | /* For raid6, if creating with 1 missing drive, make a good drive |
550 | * into a spare, else the create will fail | |
551 | */ | |
99cc42f4 | 552 | if (s->assume_clean == 0 && c->force == 0 && first_missing < s->raiddisks && |
ffcfc735 | 553 | st->ss->external == 0 && |
99cc42f4 N |
554 | second_missing >= s->raiddisks && s->level == 6) { |
555 | insert_point = s->raiddisks - 1; | |
6fb79233 NB |
556 | if (insert_point == first_missing) |
557 | insert_point--; | |
99cc42f4 | 558 | s->sparedisks ++; |
6fb79233 NB |
559 | info.array.active_disks--; |
560 | missing_disks++; | |
561 | } | |
570510ba | 562 | |
99cc42f4 | 563 | if (s->level <= 0 && first_missing < subdevs * 2) { |
e7b84f9d | 564 | pr_err("This level does not support missing devices\n"); |
570510ba NB |
565 | return 1; |
566 | } | |
aba69144 | 567 | |
7f91af49 | 568 | /* We need to create the device */ |
ad5bc697 | 569 | map_lock(&map); |
171dccc8 | 570 | mdfd = create_mddev(mddev, name, c->autof, LOCAL, chosen_name); |
e06af9dd JS |
571 | if (mdfd < 0) { |
572 | map_unlock(&map); | |
7f91af49 | 573 | return 1; |
e06af9dd | 574 | } |
3e9df86a AK |
575 | /* verify if chosen_name is not in use, |
576 | * it could be in conflict with already existing device | |
577 | * e.g. container, array | |
578 | */ | |
579 | if (strncmp(chosen_name, "/dev/md/", 8) == 0 | |
580 | && map_by_name(&map, chosen_name+8) != NULL) { | |
e7b84f9d | 581 | pr_err("Array name %s is in use already.\n", |
3e9df86a AK |
582 | chosen_name); |
583 | close(mdfd); | |
584 | map_unlock(&map); | |
585 | return 1; | |
586 | } | |
f2be09f1 | 587 | mddev = chosen_name; |
7f91af49 N |
588 | |
589 | vers = md_get_version(mdfd); | |
590 | if (vers < 9000) { | |
e7b84f9d | 591 | pr_err("Create requires md driver version 0.90.0 or later\n"); |
e06af9dd | 592 | goto abort_locked; |
7f91af49 N |
593 | } else { |
594 | mdu_array_info_t inf; | |
595 | memset(&inf, 0, sizeof(inf)); | |
596 | ioctl(mdfd, GET_ARRAY_INFO, &inf); | |
597 | if (inf.working_disks != 0) { | |
e7b84f9d | 598 | pr_err("another array by this name" |
7f91af49 | 599 | " is already running.\n"); |
e06af9dd | 600 | goto abort_locked; |
7f91af49 N |
601 | } |
602 | } | |
a04d5763 | 603 | |
682c7051 NB |
604 | /* Ok, lets try some ioctls */ |
605 | ||
99cc42f4 N |
606 | info.array.level = s->level; |
607 | info.array.size = s->size; | |
608 | info.array.raid_disks = s->raiddisks; | |
82b27616 NB |
609 | /* The kernel should *know* what md_minor we are dealing |
610 | * with, but it chooses to trust me instead. Sigh | |
611 | */ | |
06c7f68e | 612 | info.array.md_minor = 0; |
82b27616 | 613 | if (fstat(mdfd, &stb)==0) |
06c7f68e NB |
614 | info.array.md_minor = minor(stb.st_rdev); |
615 | info.array.not_persistent = 0; | |
6fb79233 | 616 | |
99cc42f4 N |
617 | if ( ( (s->level == 4 || s->level == 5) && |
618 | (insert_point < s->raiddisks || first_missing < s->raiddisks) ) | |
b5e64645 | 619 | || |
99cc42f4 N |
620 | ( s->level == 6 && (insert_point < s->raiddisks |
621 | || second_missing < s->raiddisks)) | |
47d79ef8 | 622 | || |
99cc42f4 | 623 | ( s->level <= 0 ) |
d024b0a7 | 624 | || |
99cc42f4 | 625 | s->assume_clean |
103f2410 | 626 | ) { |
06c7f68e | 627 | info.array.state = 1; /* clean, but one+ drive will be missing*/ |
b7528a20 | 628 | info.resync_start = MaxSector; |
103f2410 | 629 | } else { |
06c7f68e | 630 | info.array.state = 0; /* not clean, but no errors */ |
103f2410 NB |
631 | info.resync_start = 0; |
632 | } | |
99cc42f4 | 633 | if (s->level == 10) { |
f9c25f1d NB |
634 | /* for raid10, the bitmap size is the capacity of the array, |
635 | * which is array.size * raid_disks / ncopies; | |
636 | * .. but convert to sectors. | |
637 | */ | |
99cc42f4 N |
638 | int ncopies = ((s->layout>>8) & 255) * (s->layout & 255); |
639 | bitmapsize = s->size * s->raiddisks / ncopies * 2; | |
640 | /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, s->size, s->raiddisks, ncopies);*/ | |
f9c25f1d | 641 | } else |
99cc42f4 | 642 | bitmapsize = s->size * 2; |
f9c25f1d | 643 | |
82b27616 NB |
644 | /* There is lots of redundancy in these disk counts, |
645 | * raid_disks is the most meaningful value | |
646 | * it describes the geometry of the array | |
647 | * it is constant | |
648 | * nr_disks is total number of used slots. | |
649 | * it should be raid_disks+spare_disks | |
650 | * spare_disks is the number of extra disks present | |
651 | * see above | |
652 | * active_disks is the number of working disks in | |
653 | * active slots. (With raid_disks) | |
654 | * working_disks is the total number of working disks, | |
655 | * including spares | |
656 | * failed_disks is the number of disks marked failed | |
657 | * | |
5d500228 | 658 | * Ideally, the kernel would keep these (except raid_disks) |
82b27616 NB |
659 | * up-to-date as we ADD_NEW_DISK, but it doesn't (yet). |
660 | * So for now, we assume that all raid and spare | |
661 | * devices will be given. | |
662 | */ | |
99cc42f4 | 663 | info.array.spare_disks=s->sparedisks; |
06c7f68e NB |
664 | info.array.failed_disks=missing_disks; |
665 | info.array.nr_disks = info.array.working_disks | |
666 | + info.array.failed_disks; | |
99cc42f4 N |
667 | info.array.layout = s->layout; |
668 | info.array.chunk_size = s->chunk*1024; | |
82d9eba6 | 669 | |
b3b33eb5 NB |
670 | if (name == NULL || *name == 0) { |
671 | /* base name on mddev */ | |
d1e80164 NB |
672 | /* /dev/md0 -> 0 |
673 | * /dev/md_d0 -> d0 | |
674 | * /dev/md/1 -> 1 | |
675 | * /dev/md/d1 -> d1 | |
676 | * /dev/md/home -> home | |
677 | * /dev/mdhome -> home | |
678 | */ | |
69207ff6 | 679 | /* FIXME compare this with rules in create_mddev */ |
b3b33eb5 NB |
680 | name = strrchr(mddev, '/'); |
681 | if (name) { | |
682 | name++; | |
60248f74 NB |
683 | if (strncmp(name, "md_d", 4)==0 && |
684 | strlen(name) > 4 && | |
685 | isdigit(name[4]) && | |
b3b33eb5 | 686 | (name-mddev) == 5 /* /dev/ */) |
d1e80164 | 687 | name += 3; |
60248f74 NB |
688 | else if (strncmp(name, "md", 2)==0 && |
689 | strlen(name) > 2 && | |
690 | isdigit(name[2]) && | |
691 | (name-mddev) == 5 /* /dev/ */) | |
b3b33eb5 NB |
692 | name += 2; |
693 | } | |
694 | } | |
83cd1e97 | 695 | if (!st->ss->init_super(st, &info.array, s->size, name, c->homehost, uuid, |
40c9a66a | 696 | data_offset)) |
e06af9dd | 697 | goto abort_locked; |
682c7051 | 698 | |
d2ca6449 | 699 | total_slots = info.array.nr_disks; |
a5d85af7 | 700 | st->ss->getinfo_super(st, &info, NULL); |
95eeceeb | 701 | sysfs_init(&info, mdfd, 0); |
159c3a1a | 702 | |
171dccc8 | 703 | if (did_default && c->verbose >= 0) { |
3c558363 | 704 | if (is_subarray(info.text_version)) { |
f7f1b6a1 NB |
705 | int dnum = devname2devnum(info.text_version+1); |
706 | char *path; | |
707 | int mdp = get_mdp_major(); | |
708 | struct mdinfo *mdi; | |
709 | if (dnum > 0) | |
710 | path = map_dev(MD_MAJOR, dnum, 1); | |
711 | else | |
712 | path = map_dev(mdp, (-1-dnum)<< 6, 1); | |
713 | ||
714 | mdi = sysfs_read(-1, dnum, GET_VERSION); | |
715 | ||
e7b84f9d | 716 | pr_err("Creating array inside " |
ca3b6696 | 717 | "%s container %s\n", |
f7f1b6a1 NB |
718 | mdi?mdi->text_version:"managed", path); |
719 | sysfs_free(mdi); | |
720 | } else | |
e7b84f9d | 721 | pr_err("Defaulting to version" |
f7f1b6a1 NB |
722 | " %s metadata\n", info.text_version); |
723 | } | |
b8ac1967 | 724 | |
ad5bc697 | 725 | map_update(&map, fd2devnum(mdfd), info.text_version, |
a04d5763 | 726 | info.uuid, chosen_name); |
ad5bc697 | 727 | map_unlock(&map); |
a04d5763 | 728 | |
99cc42f4 | 729 | if (s->bitmap_file && vers < 9003) { |
943eafef | 730 | major_num = BITMAP_MAJOR_HOSTENDIAN; |
dcec9ee5 | 731 | #ifdef __BIG_ENDIAN |
e7b84f9d | 732 | pr_err("Warning - bitmaps created on this kernel are not portable\n" |
dcec9ee5 NB |
733 | " between different architectured. Consider upgrading the Linux kernel.\n"); |
734 | #endif | |
735 | } | |
736 | ||
99cc42f4 | 737 | if (s->bitmap_file && strcmp(s->bitmap_file, "internal")==0) { |
55935d51 | 738 | if ((vers%100) < 2) { |
e7b84f9d | 739 | pr_err("internal bitmaps not supported by this kernel.\n"); |
7f91af49 | 740 | goto abort; |
55935d51 | 741 | } |
ebeb3663 | 742 | if (!st->ss->add_internal_bitmap) { |
e7b84f9d | 743 | pr_err("internal bitmaps not supported with %s metadata\n", |
ebeb3663 N |
744 | st->ss->name); |
745 | goto abort; | |
746 | } | |
99cc42f4 N |
747 | if (!st->ss->add_internal_bitmap(st, &s->bitmap_chunk, |
748 | c->delay, s->write_behind, | |
943eafef | 749 | bitmapsize, 1, major_num)) { |
e7b84f9d | 750 | pr_err("Given bitmap chunk size not supported.\n"); |
7f91af49 | 751 | goto abort; |
55935d51 | 752 | } |
99cc42f4 | 753 | s->bitmap_file = NULL; |
55935d51 NB |
754 | } |
755 | ||
f35f2525 | 756 | sysfs_init(&info, mdfd, 0); |
55935d51 | 757 | |
d1d599ea | 758 | if (st->ss->external && st->container_dev != NoMdDev) { |
f35f2525 N |
759 | /* member */ |
760 | ||
761 | /* When creating a member, we need to be careful | |
762 | * to negotiate with mdmon properly. | |
763 | * If it is already running, we cannot write to | |
764 | * the devices and must ask it to do that part. | |
765 | * If it isn't running, we write to the devices, | |
766 | * and then start it. | |
767 | * We hold an exclusive open on the container | |
768 | * device to make sure mdmon doesn't exit after | |
769 | * we checked that it is running. | |
770 | * | |
771 | * For now, fail if it is already running. | |
772 | */ | |
773 | container_fd = open_dev_excl(st->container_dev); | |
774 | if (container_fd < 0) { | |
e7b84f9d | 775 | pr_err("Cannot get exclusive " |
f35f2525 | 776 | "open on container - weird.\n"); |
7f91af49 | 777 | goto abort; |
d03373f1 | 778 | } |
f35f2525 | 779 | if (mdmon_running(st->container_dev)) { |
171dccc8 | 780 | if (c->verbose) |
e7b84f9d | 781 | pr_err("reusing mdmon " |
f35f2525 N |
782 | "for %s.\n", |
783 | devnum2devname(st->container_dev)); | |
784 | st->update_tail = &st->updates; | |
785 | } else | |
786 | need_mdmon = 1; | |
787 | } | |
788 | rv = set_array_info(mdfd, st, &info); | |
82d9eba6 | 789 | if (rv) { |
e7b84f9d | 790 | pr_err("failed to set array info for %s: %s\n", |
52826846 | 791 | mddev, strerror(errno)); |
7f91af49 | 792 | goto abort; |
682c7051 | 793 | } |
52826846 | 794 | |
99cc42f4 | 795 | if (s->bitmap_file) { |
c82f047c | 796 | int uuid[4]; |
55935d51 | 797 | |
3da92f27 | 798 | st->ss->uuid_from_super(st, uuid); |
99cc42f4 N |
799 | if (CreateBitmap(s->bitmap_file, c->force, (char*)uuid, s->bitmap_chunk, |
800 | c->delay, s->write_behind, | |
f9c25f1d | 801 | bitmapsize, |
943eafef | 802 | major_num)) { |
7f91af49 | 803 | goto abort; |
c82f047c | 804 | } |
99cc42f4 | 805 | bitmap_fd = open(s->bitmap_file, O_RDWR); |
c82f047c | 806 | if (bitmap_fd < 0) { |
e7b84f9d | 807 | pr_err("weird: %s cannot be openned\n", |
99cc42f4 | 808 | s->bitmap_file); |
7f91af49 | 809 | goto abort; |
c82f047c NB |
810 | } |
811 | if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) { | |
e7b84f9d | 812 | pr_err("Cannot set bitmap file for %s: %s\n", |
c82f047c | 813 | mddev, strerror(errno)); |
7f91af49 | 814 | goto abort; |
c82f047c NB |
815 | } |
816 | } | |
817 | ||
503975b9 | 818 | infos = xmalloc(sizeof(*infos) * total_slots); |
4b1ac34b | 819 | |
4b1ac34b | 820 | for (pass=1; pass <=2 ; pass++) { |
a655e550 | 821 | struct mddev_dev *moved_disk = NULL; /* the disk that was moved out of the insert point */ |
4b1ac34b NB |
822 | |
823 | for (dnum=0, dv = devlist ; dv ; | |
824 | dv=(dv->next)?(dv->next):moved_disk, dnum++) { | |
825 | int fd; | |
826 | struct stat stb; | |
d2ca6449 | 827 | struct mdinfo *inf = &infos[dnum]; |
4b1ac34b | 828 | |
d2ca6449 NB |
829 | if (dnum >= total_slots) |
830 | abort(); | |
4b1ac34b NB |
831 | if (dnum == insert_point) { |
832 | moved_disk = dv; | |
8592f29d | 833 | continue; |
52826846 | 834 | } |
8592f29d | 835 | if (strcasecmp(dv->devname, "missing")==0) |
111d01fc | 836 | continue; |
8592f29d N |
837 | if (have_container) |
838 | moved_disk = NULL; | |
839 | if (have_container && dnum < info.array.raid_disks - 1) | |
840 | /* repeatedly use the container */ | |
841 | moved_disk = dv; | |
111d01fc | 842 | |
d2ca6449 NB |
843 | switch(pass) { |
844 | case 1: | |
845 | *inf = info; | |
5f8097be | 846 | |
d2ca6449 NB |
847 | inf->disk.number = dnum; |
848 | inf->disk.raid_disk = dnum; | |
99cc42f4 | 849 | if (inf->disk.raid_disk < s->raiddisks) |
d2ca6449 NB |
850 | inf->disk.state = (1<<MD_DISK_ACTIVE) | |
851 | (1<<MD_DISK_SYNC); | |
852 | else | |
853 | inf->disk.state = 0; | |
854 | ||
b01b06bd | 855 | if (dv->writemostly == 1) |
d2ca6449 NB |
856 | inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY); |
857 | ||
8592f29d N |
858 | if (have_container) |
859 | fd = -1; | |
860 | else { | |
d1d599ea N |
861 | if (st->ss->external && |
862 | st->container_dev != NoMdDev) | |
8592f29d N |
863 | fd = open(dv->devname, O_RDWR); |
864 | else | |
865 | fd = open(dv->devname, O_RDWR|O_EXCL); | |
866 | ||
867 | if (fd < 0) { | |
e7b84f9d | 868 | pr_err("failed to open %s " |
8592f29d N |
869 | "after earlier success - aborting\n", |
870 | dv->devname); | |
871 | goto abort; | |
872 | } | |
873 | fstat(fd, &stb); | |
874 | inf->disk.major = major(stb.st_rdev); | |
875 | inf->disk.minor = minor(stb.st_rdev); | |
d2ca6449 | 876 | } |
8592f29d N |
877 | if (fd >= 0) |
878 | remove_partitions(fd); | |
f20c3968 | 879 | if (st->ss->add_to_super(st, &inf->disk, |
72ca9bcf N |
880 | fd, dv->devname, |
881 | dv->data_offset)) { | |
4eb26970 | 882 | ioctl(mdfd, STOP_ARRAY, NULL); |
f20c3968 | 883 | goto abort; |
4eb26970 | 884 | } |
a5d85af7 | 885 | st->ss->getinfo_super(st, inf, NULL); |
8ed3e5e1 | 886 | safe_mode_delay = inf->safe_mode_delay; |
d2ca6449 | 887 | |
171dccc8 | 888 | if (have_container && c->verbose > 0) |
e7b84f9d | 889 | pr_err("Using %s for device %d\n", |
8592f29d N |
890 | map_dev(inf->disk.major, |
891 | inf->disk.minor, | |
892 | 0), dnum); | |
893 | ||
894 | if (!have_container) { | |
895 | /* getinfo_super might have lost these ... */ | |
896 | inf->disk.major = major(stb.st_rdev); | |
897 | inf->disk.minor = minor(stb.st_rdev); | |
898 | } | |
4b1ac34b NB |
899 | break; |
900 | case 2: | |
d2ca6449 | 901 | inf->errors = 0; |
4b1ac34b | 902 | |
f35f2525 | 903 | rv = add_disk(mdfd, st, &info, inf); |
d2ca6449 | 904 | |
2503d23b | 905 | if (rv) { |
e7b84f9d N |
906 | pr_err("ADD_NEW_DISK for %s " |
907 | "failed: %s\n", | |
908 | dv->devname, strerror(errno)); | |
7f91af49 | 909 | goto abort; |
4b1ac34b | 910 | } |
4b1ac34b NB |
911 | break; |
912 | } | |
8592f29d N |
913 | if (!have_container && |
914 | dv == moved_disk && dnum != insert_point) break; | |
52826846 | 915 | } |
edd8d13c | 916 | if (pass == 1) { |
9b1fb677 DW |
917 | struct mdinfo info_new; |
918 | struct map_ent *me = NULL; | |
919 | ||
920 | /* check to see if the uuid has changed due to these | |
921 | * metadata changes, and if so update the member array | |
922 | * and container uuid. Note ->write_init_super clears | |
923 | * the subarray cursor such that ->getinfo_super once | |
924 | * again returns container info. | |
925 | */ | |
926 | map_lock(&map); | |
a5d85af7 | 927 | st->ss->getinfo_super(st, &info_new, NULL); |
99cc42f4 | 928 | if (st->ss->external && s->level != LEVEL_CONTAINER && |
9b1fb677 DW |
929 | !same_uuid(info_new.uuid, info.uuid, 0)) { |
930 | map_update(&map, fd2devnum(mdfd), | |
931 | info_new.text_version, | |
932 | info_new.uuid, chosen_name); | |
933 | me = map_by_devnum(&map, st->container_dev); | |
934 | } | |
935 | ||
ab80e597 | 936 | if (st->ss->write_init_super(st)) { |
ab80e597 | 937 | st->ss->free_super(st); |
e06af9dd | 938 | goto abort_locked; |
ab80e597 | 939 | } |
9b1fb677 DW |
940 | |
941 | /* update parent container uuid */ | |
942 | if (me) { | |
503975b9 | 943 | char *path = xstrdup(me->path); |
9b1fb677 | 944 | |
a5d85af7 | 945 | st->ss->getinfo_super(st, &info_new, NULL); |
9b1fb677 DW |
946 | map_update(&map, st->container_dev, |
947 | info_new.text_version, | |
948 | info_new.uuid, path); | |
949 | free(path); | |
950 | } | |
951 | map_unlock(&map); | |
952 | ||
edd8d13c | 953 | flush_metadata_updates(st); |
6946681d | 954 | st->ss->free_super(st); |
edd8d13c | 955 | } |
5e52ae9e | 956 | } |
d2ca6449 | 957 | free(infos); |
5e52ae9e | 958 | |
99cc42f4 | 959 | if (s->level == LEVEL_CONTAINER) { |
97590376 N |
960 | /* No need to start. But we should signal udev to |
961 | * create links */ | |
962 | sysfs_uevent(&info, "change"); | |
171dccc8 | 963 | if (c->verbose >= 0) |
e7b84f9d | 964 | pr_err("container %s prepared.\n", mddev); |
a7c6e3fb | 965 | wait_for(chosen_name, mdfd); |
99cc42f4 | 966 | } else if (c->runstop == 1 || subdevs >= s->raiddisks) { |
598f0d58 | 967 | if (st->ss->external) { |
4c821454 | 968 | int err; |
99cc42f4 | 969 | switch(s->level) { |
598f0d58 NB |
970 | case LEVEL_LINEAR: |
971 | case LEVEL_MULTIPATH: | |
972 | case 0: | |
4c821454 | 973 | err = sysfs_set_str(&info, NULL, "array_state", |
171dccc8 | 974 | c->readonly |
72d566f6 N |
975 | ? "readonly" |
976 | : "active"); | |
a931db9e | 977 | need_mdmon = 0; |
598f0d58 NB |
978 | break; |
979 | default: | |
4c821454 N |
980 | err = sysfs_set_str(&info, NULL, "array_state", |
981 | "readonly"); | |
598f0d58 NB |
982 | break; |
983 | } | |
f35f2525 | 984 | sysfs_set_safemode(&info, safe_mode_delay); |
4c821454 | 985 | if (err) { |
e7b84f9d N |
986 | pr_err("failed to" |
987 | " activate array.\n"); | |
4c821454 N |
988 | ioctl(mdfd, STOP_ARRAY, NULL); |
989 | goto abort; | |
990 | } | |
171dccc8 | 991 | } else if (c->readonly && |
72d566f6 N |
992 | sysfs_attribute_available( |
993 | &info, NULL, "array_state")) { | |
994 | if (sysfs_set_str(&info, NULL, | |
995 | "array_state", "readonly") < 0) { | |
996 | pr_err("Failed to start array: %s\n", | |
997 | strerror(errno)); | |
998 | ioctl(mdfd, STOP_ARRAY, NULL); | |
999 | goto abort; | |
1000 | } | |
598f0d58 | 1001 | } else { |
97590376 | 1002 | /* param is not actually used */ |
598f0d58 NB |
1003 | mdu_param_t param; |
1004 | if (ioctl(mdfd, RUN_ARRAY, ¶m)) { | |
e7b84f9d | 1005 | pr_err("RUN_ARRAY failed: %s\n", |
72d566f6 | 1006 | strerror(errno)); |
a252c078 | 1007 | if (info.array.chunk_size & (info.array.chunk_size-1)) { |
e7b84f9d N |
1008 | cont_err("Problem may be that " |
1009 | "chunk size is not a power of 2\n"); | |
a252c078 | 1010 | } |
4eb26970 | 1011 | ioctl(mdfd, STOP_ARRAY, NULL); |
7f91af49 | 1012 | goto abort; |
598f0d58 | 1013 | } |
682c7051 | 1014 | } |
171dccc8 | 1015 | if (c->verbose >= 0) |
e7b84f9d | 1016 | pr_err("array %s started.\n", mddev); |
d1d599ea | 1017 | if (st->ss->external && st->container_dev != NoMdDev) { |
8850ee3e N |
1018 | if (need_mdmon) |
1019 | start_mdmon(st->container_dev); | |
1020 | ||
983fff45 | 1021 | ping_monitor_by_id(st->container_dev); |
a931db9e NB |
1022 | close(container_fd); |
1023 | } | |
a7c6e3fb | 1024 | wait_for(chosen_name, mdfd); |
682c7051 | 1025 | } else { |
e7b84f9d | 1026 | pr_err("not starting array - not enough devices.\n"); |
682c7051 | 1027 | } |
7f91af49 | 1028 | close(mdfd); |
682c7051 | 1029 | return 0; |
7f91af49 N |
1030 | |
1031 | abort: | |
4eb26970 | 1032 | map_lock(&map); |
e06af9dd | 1033 | abort_locked: |
4eb26970 DW |
1034 | map_remove(&map, fd2devnum(mdfd)); |
1035 | map_unlock(&map); | |
1036 | ||
7f91af49 N |
1037 | if (mdfd >= 0) |
1038 | close(mdfd); | |
1039 | return 1; | |
64c4757e | 1040 | } |