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64c4757e NB |
1 | /* |
2 | * mdctl - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4 | * Copyright (C) 2001 Neil Brown <neilb@cse.unsw.edu.au> | |
5 | * | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
22 | * Email: <neilb@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | */ | |
29 | ||
30 | #include "mdctl.h" | |
31 | #include "md_p.h" | |
32 | ||
52826846 | 33 | int open_mddev(char *dev) |
64c4757e | 34 | { |
52826846 NB |
35 | int mdfd = open(dev, O_RDWR, 0); |
36 | if (mdfd < 0) | |
37 | fprintf(stderr,Name ": error opening %s: %s\n", | |
38 | dev, strerror(errno)); | |
39 | else if (md_get_version(mdfd) <= 0) { | |
40 | fprintf(stderr, Name ": %s does not appear to be an md device\n", | |
41 | dev); | |
42 | close(mdfd); | |
43 | mdfd = -1; | |
64c4757e | 44 | } |
52826846 NB |
45 | return mdfd; |
46 | } | |
64c4757e | 47 | |
64c4757e | 48 | |
52826846 NB |
49 | |
50 | int main(int argc, char *argv[]) | |
51 | { | |
52 | char mode = '\0'; | |
53 | int opt; | |
54 | char *help_text; | |
55 | char *c; | |
56 | int rv; | |
57 | int i; | |
58 | ||
59 | int chunk = 0; | |
60 | int size = 0; | |
61 | int level = -10; | |
62 | int layout = -1; | |
63 | int raiddisks = 0; | |
64 | int sparedisks = 0; | |
65 | struct mddev_ident_s ident; | |
66 | char *configfile = NULL; | |
67 | int scan = 0; | |
68 | char devmode = 0; | |
69 | int runstop = 0; | |
70 | int readonly = 0; | |
71 | char *devs[MD_SB_DISKS+1]; | |
72 | int devmodes[MD_SB_DISKS+1]; | |
73 | int devs_found = 0; | |
74 | int verbose = 0; | |
75 | int force = 0; | |
76 | ||
77 | char *mailaddr = NULL; | |
78 | char *program = NULL; | |
79 | int delay = 0; | |
80 | ||
81 | int mdfd = -1; | |
82 | ||
83 | ident.uuid_set=0; | |
84 | ident.super_minor= -1; | |
85 | ident.devices=0; | |
86 | ||
87 | while ((opt=getopt_long(argc, argv, | |
88 | short_options, long_options, | |
89 | NULL)) != -1) { | |
90 | ||
91 | switch(opt) { | |
92 | case '@': /* just incase they say --manage */ | |
93 | case 'A': | |
94 | case 'B': | |
95 | case 'C': | |
96 | case 'D': | |
97 | case 'E': | |
98 | case 'F': | |
99 | /* setting mode - only once */ | |
100 | if (mode) { | |
101 | fprintf(stderr, Name ": --%s/-%c not allowed, mode already set to %s\n", | |
102 | long_options[opt-'A'+1].name, | |
103 | long_options[opt-'A'+1].val, | |
104 | long_options[mode-'A'+1].name); | |
105 | exit(2); | |
106 | } | |
107 | mode = opt; | |
108 | continue; | |
109 | ||
110 | case 'h': | |
111 | help_text = Help; | |
112 | switch (mode) { | |
113 | case 'C': help_text = Help_create; break; | |
114 | case 'B': help_text = Help_build; break; | |
115 | case 'A': help_text = Help_assemble; break; | |
116 | } | |
117 | fputs(help_text,stderr); | |
118 | exit(0); | |
119 | ||
120 | case 'V': | |
121 | fputs(Version, stderr); | |
122 | exit(0); | |
123 | ||
124 | case 'v': verbose = 1; | |
125 | continue; | |
126 | ||
127 | case 1: /* an undecorated option - must be a device name. | |
128 | * Depending on mode, it could be that: | |
129 | * All devices listed are "md" devices : --Detail, -As | |
130 | * No devices are "md" devices : --Examine | |
131 | * First device is "md", others are component: -A,-B,-C | |
132 | */ | |
133 | if (devs_found >= MD_SB_DISKS+1) { | |
134 | fprintf(stderr, Name ": too many devices at %s - current limit -s %d\n", | |
135 | optarg, MD_SB_DISKS+1); | |
136 | exit(2); | |
137 | } | |
138 | devs[devs_found] = optarg; | |
139 | devmodes[devs_found] = devmode; | |
140 | devs_found++; | |
141 | continue; | |
142 | ||
143 | case ':': | |
144 | case '?': | |
145 | fputs(Usage, stderr); | |
682c7051 | 146 | exit(2); |
52826846 NB |
147 | default: |
148 | /* force mode setting - @==manage if nothing else */ | |
149 | if (!mode) mode = '@'; | |
682c7051 | 150 | } |
682c7051 | 151 | |
52826846 NB |
152 | /* We've got a mode, and opt is now something else which |
153 | * could depend on the mode */ | |
154 | #define O(a,b) ((a<<8)|b) | |
155 | switch (O(mode,opt)) { | |
156 | case O('C','c'): | |
157 | case O('B','c'): /* chunk or rounding */ | |
158 | if (chunk) { | |
159 | fprintf(stderr, Name ": chunk/rounding may only be specified once. " | |
160 | "Second value is %s.\n", optarg); | |
161 | exit(2); | |
162 | } | |
163 | chunk = strtol(optarg, &c, 10); | |
164 | if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) { | |
165 | fprintf(stderr, Name ": invalid chunk/rounding value: %s\n", | |
166 | optarg); | |
167 | exit(2); | |
168 | } | |
169 | continue; | |
64c4757e | 170 | |
52826846 NB |
171 | case O('C','z'): /* size */ |
172 | if (size) { | |
173 | fprintf(stderr, Name ": size may only be specified once. " | |
174 | "Second value is %s.\n", optarg); | |
175 | exit(2); | |
176 | } | |
177 | size = strtol(optarg, &c, 10); | |
178 | if (!optarg[0] || *c || size < 4) { | |
179 | fprintf(stderr, Name ": invalid size: %s\n", | |
180 | optarg); | |
181 | exit(2); | |
182 | } | |
183 | continue; | |
64c4757e | 184 | |
52826846 NB |
185 | case O('C','l'): |
186 | case O('B','l'): /* set raid level*/ | |
187 | if (level != -10) { | |
188 | fprintf(stderr, Name ": raid level may only be set once. " | |
189 | "Second value is %s.\n", optarg); | |
190 | exit(2); | |
191 | } | |
192 | level = map_name(pers, optarg); | |
193 | if (level == -10) { | |
194 | fprintf(stderr, Name ": invalid raid level: %s\n", | |
195 | optarg); | |
196 | exit(2); | |
197 | } | |
198 | if (level > 0 && mode == 'B') { | |
199 | fprintf(stderr, Name ": Raid level %s not permitted with --build.\n", | |
200 | optarg); | |
201 | exit(2); | |
202 | } | |
203 | if (sparedisks > 0 && level < 1) { | |
204 | fprintf(stderr, Name ": raid level %s is incompatible with spare-disks setting.\n", | |
205 | optarg); | |
206 | exit(2); | |
207 | } | |
208 | continue; | |
64c4757e | 209 | |
52826846 NB |
210 | case O('C','p'): /* raid5 layout */ |
211 | if (layout >= 0) { | |
212 | fprintf(stderr,Name ": layout may only be sent once. " | |
213 | "Second value was %s\n", optarg); | |
214 | exit(2); | |
215 | } | |
216 | switch(level) { | |
217 | default: | |
218 | fprintf(stderr, Name ": layout now meaningful for %s arrays.\n", | |
219 | map_num(pers, level)); | |
220 | exit(2); | |
221 | case -10: | |
222 | fprintf(stderr, Name ": raid level must be given before layout.\n"); | |
223 | exit(2); | |
224 | ||
225 | case 5: | |
226 | layout = map_name(r5layout, optarg); | |
227 | if (layout==-10) { | |
228 | fprintf(stderr, Name ": layout %s not understood for raid5.\n", | |
229 | optarg); | |
230 | exit(2); | |
231 | } | |
232 | break; | |
233 | } | |
234 | continue; | |
235 | ||
236 | case O('C','n'): | |
237 | case O('B','n'): /* number of raid disks */ | |
238 | if (raiddisks) { | |
239 | fprintf(stderr, Name ": raid-disks set twice: %d and %s\n", | |
240 | raiddisks, optarg); | |
241 | exit(2); | |
242 | } | |
243 | raiddisks = strtol(optarg, &c, 10); | |
244 | if (!optarg[0] || *c || raiddisks<=0 || raiddisks > MD_SB_DISKS) { | |
245 | fprintf(stderr, Name ": invalid number of raid disks: %s\n", | |
246 | optarg); | |
247 | exit(2); | |
248 | } | |
249 | continue; | |
250 | ||
251 | case O('C','x'): /* number of spare (eXtra) discs */ | |
252 | if (sparedisks) { | |
253 | fprintf(stderr,Name ": spare-disks set twice: %d and %s\n", | |
254 | sparedisks, optarg); | |
255 | exit(2); | |
256 | } | |
257 | if (level > -10 && level < 1) { | |
258 | fprintf(stderr, Name ": spare-disks setting is incompatible with raid level %d\n", | |
259 | level); | |
260 | exit(2); | |
261 | } | |
262 | sparedisks = strtol(optarg, &c, 10); | |
263 | if (!optarg[0] || *c || sparedisks < 0 || sparedisks > MD_SB_DISKS - raiddisks) { | |
264 | fprintf(stderr, Name ": invalid number of spare disks: %s\n", | |
265 | optarg); | |
266 | exit(2); | |
267 | } | |
268 | continue; | |
269 | case O('C','f'): /* force honouring of device list */ | |
270 | force=1; | |
271 | continue; | |
272 | ||
273 | /* now for the Assemble options */ | |
274 | case O('A','f'): /* force assembly */ | |
275 | force = 1; | |
276 | continue; | |
277 | case O('A','u'): /* uuid of array */ | |
278 | if (ident.uuid_set) { | |
279 | fprintf(stderr, Name ": uuid cannot bet set twice. " | |
280 | "Second value %s.\n", optarg); | |
281 | exit(2); | |
282 | } | |
283 | if (parse_uuid(optarg, ident.uuid)) | |
284 | ident.uuid_set = 1; | |
285 | else { | |
286 | fprintf(stderr,Name ": Bad uuid: %s\n", optarg); | |
287 | exit(2); | |
288 | } | |
289 | continue; | |
290 | ||
291 | case O('A','c'): /* config file */ | |
292 | case O('F','c'): | |
293 | if (configfile) { | |
294 | fprintf(stderr, Name ": configfile cannot be set twice. " | |
295 | "Second value is %s.\n", optarg); | |
296 | exit(2); | |
297 | } | |
298 | configfile = optarg; | |
299 | /* FIXME possibly check that config file exists. Even parse it */ | |
300 | continue; | |
301 | case O('A','s'): /* scan */ | |
302 | scan = 1; | |
303 | continue; | |
304 | ||
305 | case O('F','m'): /* mail address */ | |
306 | if (mailaddr) | |
307 | fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n", | |
308 | optarg); | |
309 | else | |
310 | mailaddr = optarg; | |
311 | continue; | |
312 | ||
313 | case O('F','p'): /* alert program */ | |
314 | if (program) | |
315 | fprintf(stderr, Name ": only specify one alter program. %s ignored.\n", | |
316 | optarg); | |
317 | else | |
318 | program = optarg; | |
319 | continue; | |
64c4757e | 320 | |
52826846 NB |
321 | case O('F','d'): /* delay in seconds */ |
322 | if (delay) | |
323 | fprintf(stderr, Name ": only specify delay once. %s ignored.\n", | |
324 | optarg); | |
325 | else { | |
326 | delay = strtol(optarg, &c, 10); | |
327 | if (!optarg[0] || *c || delay<1) { | |
328 | fprintf(stderr, Name ": invalid delay: %s\n", | |
329 | optarg); | |
330 | exit(2); | |
331 | } | |
332 | } | |
333 | continue; | |
334 | ||
335 | ||
336 | /* now the general management options. Some are applicable | |
337 | * to other modes. None have arguments. | |
338 | */ | |
339 | case O('@','a'): | |
340 | case O('C','a'): | |
341 | case O('B','a'): | |
342 | case O('A','a'): /* add a drive */ | |
343 | devmode = 'a'; | |
344 | continue; | |
345 | case O('@','r'): /* remove a drive */ | |
346 | devmode = 'r'; | |
347 | continue; | |
348 | case O('@','f'): /* set faulty */ | |
349 | devmode = 'f'; | |
350 | continue; | |
351 | case O('@','R'): | |
352 | case O('A','R'): | |
353 | case O('B','R'): | |
354 | case O('C','R'): /* Run the array */ | |
355 | if (runstop < 0) { | |
356 | fprintf(stderr, Name ": Cannot both Stop and Run an array\n"); | |
357 | exit(2); | |
358 | } | |
359 | runstop = 1; | |
360 | continue; | |
361 | case O('@','S'): | |
362 | if (runstop > 0) { | |
363 | fprintf(stderr, Name ": Cannot both Run and Stop an array\n"); | |
364 | exit(2); | |
365 | } | |
366 | runstop = -1; | |
367 | continue; | |
368 | ||
369 | case O('@','o'): | |
370 | if (readonly < 0) { | |
371 | fprintf(stderr, Name ": Cannot have both readonly and readwrite\n"); | |
372 | exit(2); | |
373 | } | |
374 | readonly = 1; | |
375 | continue; | |
376 | case O('@','w'): | |
377 | if (readonly > 0) { | |
378 | fprintf(stderr, "mkdctl: Cannot have both readwrite and readonly.\n"); | |
379 | exit(2); | |
380 | } | |
381 | readonly = -1; | |
382 | continue; | |
383 | } | |
384 | /* We have now processed all the valid options. Anything else is | |
385 | * an error | |
386 | */ | |
387 | fprintf(stderr, Name ": option %c not valid in mode %c\n", | |
388 | opt, mode); | |
64c4757e | 389 | exit(2); |
52826846 NB |
390 | |
391 | } | |
392 | ||
393 | if (!mode) { | |
394 | fputs(Usage, stderr); | |
64c4757e | 395 | exit(2); |
64c4757e | 396 | } |
52826846 NB |
397 | /* Ok, got the option parsing out of the way |
398 | * hopefully it's mostly right but there might be some stuff | |
399 | * missing | |
400 | * | |
401 | * That is mosty checked in ther per-mode stuff but... | |
402 | * | |
403 | * For @,B,C and A without -s, the first device listed must be an md device | |
404 | * we check that here and open it. | |
64c4757e | 405 | */ |
52826846 NB |
406 | |
407 | if (mode=='@' || mode == 'B' || mode == 'C' || (mode == 'A' && ! scan)) { | |
408 | if (devs_found < 1) { | |
409 | fprintf(stderr, Name ": an md device must be given in this mode\n"); | |
410 | exit(2); | |
411 | } | |
412 | mdfd = open_mddev(devs[0]); | |
413 | if (mdfd < 0) | |
414 | exit(1); | |
64c4757e | 415 | } |
52826846 NB |
416 | |
417 | ||
418 | rv = 0; | |
419 | switch(mode) { | |
420 | case '@':/* Management */ | |
421 | /* readonly, add/remove, readwrite, runstop */ | |
422 | if (readonly>0) | |
423 | rv = Manage_ro(devs[0], mdfd, readonly); | |
424 | if (!rv && devs_found>1) | |
425 | rv = Manage_subdevs(devs[0], mdfd, | |
426 | devs_found-1, devs+1, devmodes+1); | |
427 | if (!rv && readonly < 0) | |
428 | rv = Manage_ro(devs[0], mdfd, readonly); | |
429 | if (!rv && runstop) | |
430 | rv = Manage_runstop(devs[0], mdfd, runstop); | |
431 | break; | |
432 | case 'A': /* Assemble */ | |
433 | if (!scan) | |
434 | rv = Assemble(devs[0], mdfd, &ident, configfile, | |
435 | devs_found-1, devs+1, | |
436 | readonly, runstop, verbose, force); | |
437 | else if (devs_found>0) | |
438 | for (i=0; i<devs_found; i++) { | |
439 | mddev_ident_t array_ident = conf_get_ident(configfile, devs[i]); | |
440 | mdfd = open_mddev(devs[i]); | |
441 | if (mdfd < 0) { | |
442 | rv |= 1; | |
443 | continue; | |
444 | } | |
445 | if (array_ident == NULL) { | |
446 | fprintf(stderr, Name ": %s not identified in config file.\n", | |
447 | devs[i]); | |
448 | rv |= 1; | |
449 | continue; | |
450 | } | |
451 | rv |= Assemble(devs[i], mdfd, array_ident, configfile, | |
452 | 0, NULL, | |
453 | readonly, runstop, verbose, force); | |
454 | } | |
455 | else { | |
456 | mddev_ident_t array_list = conf_get_ident(configfile, NULL); | |
457 | if (!array_list) { | |
458 | fprintf(stderr, Name ": No arrays found in config file\n"); | |
459 | rv = 1; | |
460 | } else | |
461 | for (; array_list; array_list = array_list->next) { | |
462 | mdfd = open_mddev(array_list->devname); | |
463 | if (mdfd < 0) { | |
464 | rv |= 1; | |
465 | continue; | |
466 | } | |
467 | rv |= Assemble(array_list->devname, mdfd, | |
468 | array_list, configfile, | |
469 | 0, NULL, | |
470 | readonly, runstop, verbose, force); | |
471 | } | |
472 | } | |
473 | break; | |
474 | case 'B': /* Build */ | |
475 | rv = Build(devs[0], mdfd, chunk, level, raiddisks, devs_found-1,devs+1); | |
476 | break; | |
477 | case 'C': /* Create */ | |
478 | rv = Create(devs[0], mdfd, chunk, level, layout, size, | |
479 | raiddisks, sparedisks, | |
480 | devs_found-1,devs+1, runstop, verbose, force); | |
481 | break; | |
482 | case 'D': /* Detail */ | |
483 | for (i=0; i<devs_found; i++) | |
484 | rv |= Detail(devs[i]); | |
485 | break; | |
486 | case 'E': /* Examine */ | |
487 | for (i=0; i<devs_found; i++) | |
488 | rv |= Examine(devs[i]); | |
489 | break; | |
490 | case 'F': /* Follow */ | |
491 | rv= Monitor(devs_found, devs, mailaddr, program, | |
492 | delay?delay:60, configfile); | |
64c4757e | 493 | } |
52826846 | 494 | exit(rv); |
64c4757e | 495 | } |