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Commit | Line | Data |
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52826846 | 1 | /* |
9a9dab36 | 2 | * mdadm - manage Linux "md" devices aka RAID arrays. |
52826846 | 3 | * |
e736b623 | 4 | * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de> |
52826846 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> |
52826846 NB |
23 | */ |
24 | ||
9a9dab36 | 25 | #include "mdadm.h" |
52826846 NB |
26 | #include "md_p.h" |
27 | #include "md_u.h" | |
e0d19036 | 28 | #include <sys/wait.h> |
98127a6d | 29 | #include <signal.h> |
4450e59f | 30 | #include <limits.h> |
773135f5 | 31 | #include <syslog.h> |
52826846 | 32 | |
4948b8f7 NB |
33 | static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mailfrom, |
34 | char *cmd, int dosyslog); | |
52826846 | 35 | |
e27d562b NB |
36 | /* The largest number of disks current arrays can manage is 384 |
37 | * This really should be dynamically, but that will have to wait | |
38 | * At least it isn't MD_SB_DISKS. | |
39 | */ | |
40 | #define MaxDisks 384 | |
a655e550 | 41 | int Monitor(struct mddev_dev *devlist, |
52826846 | 42 | char *mailaddr, char *alert_cmd, |
aa88f531 | 43 | int period, int daemonise, int scan, int oneshot, |
edde9560 AC |
44 | int dosyslog, int test, char *pidfile, int increments, |
45 | int share) | |
52826846 NB |
46 | { |
47 | /* | |
48 | * Every few seconds, scan every md device looking for changes | |
49 | * When a change is found, log it, possibly run the alert command, | |
50 | * and possibly send Email | |
51 | * | |
52 | * For each array, we record: | |
53 | * Update time | |
54 | * active/working/failed/spare drives | |
55 | * State of each device. | |
e0d19036 | 56 | * %rebuilt if rebuilding |
52826846 NB |
57 | * |
58 | * If the update time changes, check out all the data again | |
59 | * It is possible that we cannot get the state of each device | |
60 | * due to bugs in the md kernel module. | |
e0d19036 NB |
61 | * We also read /proc/mdstat to get rebuild percent, |
62 | * and to get state on all active devices incase of kernel bug. | |
52826846 | 63 | * |
e0d19036 NB |
64 | * Events are: |
65 | * Fail | |
66 | * An active device had Faulty set or Active/Sync removed | |
67 | * FailSpare | |
68 | * A spare device had Faulty set | |
69 | * SpareActive | |
70 | * An active device had a reverse transition | |
71 | * RebuildStarted | |
72 | * percent went from -1 to +ve | |
9a36a9b7 ZB |
73 | * RebuildNN |
74 | * percent went from below to not-below NN% | |
e0d19036 NB |
75 | * DeviceDisappeared |
76 | * Couldn't access a device which was previously visible | |
52826846 NB |
77 | * |
78 | * if we detect an array with active<raid and spare==0 | |
79 | * we look at other arrays that have same spare-group | |
80 | * If we find one with active==raid and spare>0, | |
81 | * and if we can get_disk_info and find a name | |
82 | * Then we hot-remove and hot-add to the other array | |
83 | * | |
e0d19036 NB |
84 | * If devlist is NULL, then we can monitor everything because --scan |
85 | * was given. We get an initial list from config file and add anything | |
86 | * that appears in /proc/mdstat | |
52826846 NB |
87 | */ |
88 | ||
89 | struct state { | |
90 | char *devname; | |
e0d19036 | 91 | int devnum; /* to sync with mdstat info */ |
52826846 NB |
92 | long utime; |
93 | int err; | |
e0d19036 NB |
94 | char *spare_group; |
95 | int active, working, failed, spare, raid; | |
feb716e9 | 96 | int expected_spares; |
e27d562b | 97 | int devstate[MaxDisks]; |
f21e18ca | 98 | unsigned devid[MaxDisks]; |
e0d19036 | 99 | int percent; |
ca750d98 N |
100 | int parent_dev; /* For subarray, devnum of parent. |
101 | * For others, NoMdDev | |
102 | */ | |
103 | struct supertype *metadata; | |
52826846 NB |
104 | struct state *next; |
105 | } *statelist = NULL; | |
106 | int finished = 0; | |
e0d19036 | 107 | struct mdstat_ent *mdstat = NULL; |
4948b8f7 | 108 | char *mailfrom = NULL; |
e0d19036 | 109 | |
d013a55e | 110 | if (!mailaddr) { |
8aec876d | 111 | mailaddr = conf_get_mailaddr(); |
d013a55e | 112 | if (mailaddr && ! scan) |
56eedc1a | 113 | fprintf(stderr, Name ": Monitor using email address \"%s\" from config file\n", |
d013a55e NB |
114 | mailaddr); |
115 | } | |
8aec876d | 116 | mailfrom = conf_get_mailfrom(); |
4948b8f7 | 117 | |
d013a55e | 118 | if (!alert_cmd) { |
8aec876d | 119 | alert_cmd = conf_get_program(); |
d013a55e | 120 | if (alert_cmd && ! scan) |
56eedc1a | 121 | fprintf(stderr, Name ": Monitor using program \"%s\" from config file\n", |
d013a55e NB |
122 | alert_cmd); |
123 | } | |
56eedc1a NB |
124 | if (scan && !mailaddr && !alert_cmd) { |
125 | fprintf(stderr, Name ": No mail address or alert command - not monitoring.\n"); | |
d013a55e | 126 | return 1; |
56eedc1a | 127 | } |
d013a55e NB |
128 | |
129 | if (daemonise) { | |
130 | int pid = fork(); | |
131 | if (pid > 0) { | |
b5e64645 NB |
132 | if (!pidfile) |
133 | printf("%d\n", pid); | |
134 | else { | |
135 | FILE *pid_file; | |
136 | pid_file=fopen(pidfile, "w"); | |
137 | if (!pid_file) | |
138 | perror("cannot create pid file"); | |
139 | else { | |
140 | fprintf(pid_file,"%d\n", pid); | |
141 | fclose(pid_file); | |
142 | } | |
143 | } | |
d013a55e NB |
144 | return 0; |
145 | } | |
146 | if (pid < 0) { | |
147 | perror("daemonise"); | |
148 | return 1; | |
149 | } | |
150 | close(0); | |
fb97b4d6 | 151 | open("/dev/null", O_RDWR); |
d013a55e NB |
152 | dup2(0,1); |
153 | dup2(0,2); | |
154 | setsid(); | |
155 | } | |
e0d19036 | 156 | |
edde9560 AC |
157 | if (share) { |
158 | int pid, rv; | |
159 | FILE *fp; | |
160 | char dir[20]; | |
161 | struct stat buf; | |
162 | fp = fopen("/var/run/mdadm/autorebuild.pid", "r"); | |
163 | if (fp) { | |
164 | fscanf(fp, "%d", &pid); | |
165 | sprintf(dir, "/proc/%d", pid); | |
166 | rv = stat(dir, &buf); | |
167 | if (rv != -1) { | |
168 | if (scan) { | |
169 | fprintf(stderr, Name ": Only one " | |
170 | "autorebuild process allowed" | |
171 | " in scan mode, aborting\n"); | |
172 | fclose(fp); | |
173 | return 1; | |
174 | } else { | |
175 | fprintf(stderr, Name ": Warning: One" | |
176 | " autorebuild process already" | |
177 | " running."); | |
178 | } | |
179 | } | |
180 | fclose(fp); | |
181 | } | |
182 | if (scan) { | |
183 | fp = fopen("/var/run/mdadm/autorebuild.pid", "w"); | |
184 | if (!fp) | |
185 | fprintf(stderr, Name ": Cannot create" | |
186 | " autorebuild.pid " | |
187 | "file\n"); | |
188 | else { | |
189 | pid = getpid(); | |
190 | fprintf(fp, "%d\n", pid); | |
191 | fclose(fp); | |
192 | } | |
193 | } | |
194 | } | |
195 | ||
e0d19036 | 196 | if (devlist == NULL) { |
fa56eddb | 197 | struct mddev_ident *mdlist = conf_get_ident(NULL); |
e0d19036 | 198 | for (; mdlist; mdlist=mdlist->next) { |
fe056d1f N |
199 | struct state *st; |
200 | if (mdlist->devname == NULL) | |
201 | continue; | |
112cace6 N |
202 | if (strcasecmp(mdlist->devname, "<ignore>") == 0) |
203 | continue; | |
fe056d1f | 204 | st = malloc(sizeof *st); |
e0d19036 NB |
205 | if (st == NULL) |
206 | continue; | |
db2d001c N |
207 | if (mdlist->devname[0] == '/') |
208 | st->devname = strdup(mdlist->devname); | |
209 | else { | |
210 | st->devname = malloc(8+strlen(mdlist->devname)+1); | |
211 | strcpy(strcpy(st->devname, "/dev/md/"), | |
212 | mdlist->devname); | |
213 | } | |
e0d19036 NB |
214 | st->utime = 0; |
215 | st->next = statelist; | |
d013a55e | 216 | st->err = 0; |
4450e59f | 217 | st->devnum = INT_MAX; |
e0d19036 | 218 | st->percent = -2; |
feb716e9 | 219 | st->expected_spares = mdlist->spare_disks; |
e0d19036 NB |
220 | if (mdlist->spare_group) |
221 | st->spare_group = strdup(mdlist->spare_group); | |
222 | else | |
223 | st->spare_group = NULL; | |
224 | statelist = st; | |
225 | } | |
226 | } else { | |
a655e550 | 227 | struct mddev_dev *dv; |
e0d19036 | 228 | for (dv=devlist ; dv; dv=dv->next) { |
fa56eddb | 229 | struct mddev_ident *mdlist = conf_get_ident(dv->devname); |
e0d19036 NB |
230 | struct state *st = malloc(sizeof *st); |
231 | if (st == NULL) | |
232 | continue; | |
233 | st->devname = strdup(dv->devname); | |
234 | st->utime = 0; | |
235 | st->next = statelist; | |
d013a55e | 236 | st->err = 0; |
4450e59f | 237 | st->devnum = INT_MAX; |
e0d19036 | 238 | st->percent = -2; |
feb716e9 | 239 | st->expected_spares = -1; |
e0d19036 | 240 | st->spare_group = NULL; |
e5329c37 NB |
241 | if (mdlist) { |
242 | st->expected_spares = mdlist->spare_disks; | |
243 | if (mdlist->spare_group) | |
244 | st->spare_group = strdup(mdlist->spare_group); | |
245 | } | |
e0d19036 NB |
246 | statelist = st; |
247 | } | |
248 | } | |
249 | ||
250 | ||
251 | while (! finished) { | |
aa88f531 | 252 | int new_found = 0; |
e0d19036 NB |
253 | struct state *st; |
254 | ||
255 | if (mdstat) | |
256 | free_mdstat(mdstat); | |
22a88995 | 257 | mdstat = mdstat_read(oneshot?0:1, 0); |
e0d19036 NB |
258 | |
259 | for (st=statelist; st; st=st->next) { | |
ab5303d6 | 260 | struct { int state, major, minor; } info[MaxDisks]; |
52826846 | 261 | mdu_array_info_t array; |
dd0781e5 | 262 | struct mdstat_ent *mse = NULL, *mse2; |
e0d19036 | 263 | char *dev = st->devname; |
52826846 | 264 | int fd; |
f21e18ca | 265 | int i; |
e0d19036 | 266 | |
98c6faba | 267 | if (test) |
4948b8f7 | 268 | alert("TestMessage", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
52826846 NB |
269 | fd = open(dev, O_RDONLY); |
270 | if (fd < 0) { | |
271 | if (!st->err) | |
e0d19036 | 272 | alert("DeviceDisappeared", dev, NULL, |
4948b8f7 | 273 | mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 | 274 | /* fprintf(stderr, Name ": cannot open %s: %s\n", |
52826846 | 275 | dev, strerror(errno)); |
e0d19036 | 276 | */ st->err=1; |
52826846 NB |
277 | continue; |
278 | } | |
e4dc5106 | 279 | fcntl(fd, F_SETFD, FD_CLOEXEC); |
52826846 NB |
280 | if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { |
281 | if (!st->err) | |
e0d19036 | 282 | alert("DeviceDisappeared", dev, NULL, |
4948b8f7 | 283 | mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 | 284 | /* fprintf(stderr, Name ": cannot get array info for %s: %s\n", |
52826846 | 285 | dev, strerror(errno)); |
e0d19036 | 286 | */ st->err=1; |
52826846 NB |
287 | close(fd); |
288 | continue; | |
289 | } | |
66f8bbbe DL |
290 | /* It's much easier to list what array levels can't |
291 | * have a device disappear than all of them that can | |
292 | */ | |
293 | if (array.level == 0 || array.level == -1) { | |
5787fa49 NB |
294 | if (!st->err) |
295 | alert("DeviceDisappeared", dev, "Wrong-Level", | |
4948b8f7 | 296 | mailaddr, mailfrom, alert_cmd, dosyslog); |
5787fa49 NB |
297 | st->err = 1; |
298 | close(fd); | |
299 | continue; | |
300 | } | |
4450e59f | 301 | if (st->devnum == INT_MAX) { |
e0d19036 NB |
302 | struct stat stb; |
303 | if (fstat(fd, &stb) == 0 && | |
98c6faba | 304 | (S_IFMT&stb.st_mode)==S_IFBLK) { |
0df46c2a NB |
305 | if (major(stb.st_rdev) == MD_MAJOR) |
306 | st->devnum = minor(stb.st_rdev); | |
98c6faba | 307 | else |
0df46c2a | 308 | st->devnum = -1- (minor(stb.st_rdev)>>6); |
98c6faba | 309 | } |
e0d19036 NB |
310 | } |
311 | ||
dd0781e5 NB |
312 | for (mse2 = mdstat ; mse2 ; mse2=mse2->next) |
313 | if (mse2->devnum == st->devnum) { | |
4450e59f | 314 | mse2->devnum = INT_MAX; /* flag it as "used" */ |
dd0781e5 NB |
315 | mse = mse2; |
316 | } | |
e0d19036 | 317 | |
0eac199a AC |
318 | if (!mse) { |
319 | /* duplicated array in statelist | |
320 | * or re-created after reading mdstat*/ | |
321 | st->err = 1; | |
322 | close(fd); | |
323 | continue; | |
324 | } | |
325 | /* this array is in /proc/mdstat */ | |
4736b5dc | 326 | if (array.utime == 0) |
b1717f0a N |
327 | /* external arrays don't update utime, so |
328 | * just make sure it is always different. */ | |
329 | array.utime = st->utime + 1;; | |
4736b5dc | 330 | |
52826846 | 331 | if (st->utime == array.utime && |
e0d19036 NB |
332 | st->failed == array.failed_disks && |
333 | st->working == array.working_disks && | |
334 | st->spare == array.spare_disks && | |
335 | (mse == NULL || ( | |
336 | mse->percent == st->percent | |
337 | ))) { | |
52826846 | 338 | close(fd); |
e0d19036 | 339 | st->err = 0; |
52826846 NB |
340 | continue; |
341 | } | |
aa88f531 | 342 | if (st->utime == 0 && /* new array */ |
aa88f531 NB |
343 | mse->pattern && strchr(mse->pattern, '_') /* degraded */ |
344 | ) | |
4948b8f7 | 345 | alert("DegradedArray", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
aa88f531 | 346 | |
feb716e9 | 347 | if (st->utime == 0 && /* new array */ |
aba69144 NB |
348 | st->expected_spares > 0 && |
349 | array.spare_disks < st->expected_spares) | |
4948b8f7 | 350 | alert("SparesMissing", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
0eac199a | 351 | if (st->percent == -1 && |
e0d19036 | 352 | mse->percent >= 0) |
4948b8f7 | 353 | alert("RebuildStarted", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
0eac199a | 354 | if (st->percent >= 0 && |
e0d19036 | 355 | mse->percent >= 0 && |
9a36a9b7 ZB |
356 | (mse->percent / increments) > (st->percent / increments)) { |
357 | char percentalert[15]; // "RebuildNN" (10 chars) or "RebuildStarted" (15 chars) | |
358 | ||
359 | if((mse->percent / increments) == 0) | |
360 | snprintf(percentalert, sizeof(percentalert), "RebuildStarted"); | |
361 | else | |
362 | snprintf(percentalert, sizeof(percentalert), "Rebuild%02d", mse->percent); | |
363 | ||
364 | alert(percentalert, | |
4948b8f7 | 365 | dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
9a36a9b7 | 366 | } |
e0d19036 | 367 | |
0eac199a | 368 | if (mse->percent == -1 && |
37dfc3d6 NB |
369 | st->percent >= 0) { |
370 | /* Rebuild/sync/whatever just finished. | |
371 | * If there is a number in /mismatch_cnt, | |
372 | * we should report that. | |
373 | */ | |
7e0f6979 | 374 | struct mdinfo *sra = |
37dfc3d6 NB |
375 | sysfs_read(-1, st->devnum, GET_MISMATCH); |
376 | if (sra && sra->mismatch_cnt > 0) { | |
377 | char cnt[40]; | |
378 | sprintf(cnt, " mismatches found: %d", sra->mismatch_cnt); | |
379 | alert("RebuildFinished", dev, cnt, mailaddr, mailfrom, alert_cmd, dosyslog); | |
380 | } else | |
381 | alert("RebuildFinished", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); | |
382 | if (sra) | |
383 | free(sra); | |
384 | } | |
0eac199a | 385 | st->percent = mse->percent; |
ab5303d6 NB |
386 | |
387 | for (i=0; i<MaxDisks && i <= array.raid_disks + array.nr_disks; | |
388 | i++) { | |
389 | mdu_disk_info_t disc; | |
01d9299c | 390 | disc.number = i; |
ab5303d6 NB |
391 | if (ioctl(fd, GET_DISK_INFO, &disc) >= 0) { |
392 | info[i].state = disc.state; | |
393 | info[i].major = disc.major; | |
394 | info[i].minor = disc.minor; | |
395 | } else | |
396 | info[i].major = info[i].minor = 0; | |
397 | } | |
ca750d98 N |
398 | |
399 | if (strncmp(mse->metadata_version, "external:", 9) == 0 && | |
400 | is_subarray(mse->metadata_version+9)) | |
401 | st->parent_dev = | |
402 | devname2devnum(mse->metadata_version+10); | |
403 | else | |
404 | st->parent_dev = NoMdDev; | |
405 | if (st->metadata == NULL && | |
406 | st->parent_dev == NoMdDev) | |
407 | st->metadata = super_by_fd(fd, NULL); | |
408 | ||
ab5303d6 NB |
409 | close(fd); |
410 | ||
e27d562b | 411 | for (i=0; i<MaxDisks; i++) { |
f21e18ca | 412 | mdu_disk_info_t disc = {0,0,0,0,0}; |
e0d19036 NB |
413 | int newstate=0; |
414 | int change; | |
415 | char *dv = NULL; | |
52826846 | 416 | disc.number = i; |
e27d562b NB |
417 | if (i > array.raid_disks + array.nr_disks) { |
418 | newstate = 0; | |
419 | disc.major = disc.minor = 0; | |
ab5303d6 NB |
420 | } else if (info[i].major || info[i].minor) { |
421 | newstate = info[i].state; | |
422 | dv = map_dev(info[i].major, info[i].minor, 1); | |
423 | disc.state = newstate; | |
424 | disc.major = info[i].major; | |
425 | disc.minor = info[i].minor; | |
f21e18ca | 426 | } else if (mse && mse->pattern && i < (int)strlen(mse->pattern)) { |
e0d19036 NB |
427 | switch(mse->pattern[i]) { |
428 | case 'U': newstate = 6 /* ACTIVE/SYNC */; break; | |
429 | case '_': newstate = 0; break; | |
52826846 | 430 | } |
e27d562b NB |
431 | disc.major = disc.minor = 0; |
432 | } | |
fe394e5e NB |
433 | if (dv == NULL && st->devid[i]) |
434 | dv = map_dev(major(st->devid[i]), | |
16c6fa80 | 435 | minor(st->devid[i]), 1); |
e0d19036 NB |
436 | change = newstate ^ st->devstate[i]; |
437 | if (st->utime && change && !st->err) { | |
f21e18ca | 438 | if (i < array.raid_disks && |
e0d19036 NB |
439 | (((newstate&change)&(1<<MD_DISK_FAULTY)) || |
440 | ((st->devstate[i]&change)&(1<<MD_DISK_ACTIVE)) || | |
441 | ((st->devstate[i]&change)&(1<<MD_DISK_SYNC))) | |
442 | ) | |
4948b8f7 | 443 | alert("Fail", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog); |
f21e18ca | 444 | else if (i >= array.raid_disks && |
e0d19036 | 445 | (disc.major || disc.minor) && |
0df46c2a | 446 | st->devid[i] == makedev(disc.major, disc.minor) && |
e0d19036 NB |
447 | ((newstate&change)&(1<<MD_DISK_FAULTY)) |
448 | ) | |
4948b8f7 | 449 | alert("FailSpare", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog); |
f21e18ca | 450 | else if (i < array.raid_disks && |
4460f8f7 | 451 | ! (newstate & (1<<MD_DISK_REMOVED)) && |
e0d19036 NB |
452 | (((st->devstate[i]&change)&(1<<MD_DISK_FAULTY)) || |
453 | ((newstate&change)&(1<<MD_DISK_ACTIVE)) || | |
454 | ((newstate&change)&(1<<MD_DISK_SYNC))) | |
455 | ) | |
4948b8f7 | 456 | alert("SpareActive", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog); |
52826846 | 457 | } |
3e6944b2 | 458 | st->devstate[i] = newstate; |
0df46c2a | 459 | st->devid[i] = makedev(disc.major, disc.minor); |
52826846 | 460 | } |
52826846 NB |
461 | st->active = array.active_disks; |
462 | st->working = array.working_disks; | |
463 | st->spare = array.spare_disks; | |
464 | st->failed = array.failed_disks; | |
465 | st->utime = array.utime; | |
e0d19036 NB |
466 | st->raid = array.raid_disks; |
467 | st->err = 0; | |
52826846 | 468 | } |
e0d19036 NB |
469 | /* now check if there are any new devices found in mdstat */ |
470 | if (scan) { | |
471 | struct mdstat_ent *mse; | |
aba69144 | 472 | for (mse=mdstat; mse; mse=mse->next) |
4450e59f | 473 | if (mse->devnum != INT_MAX && |
5d19bb23 AC |
474 | (!mse->level || /* retrieve containers */ |
475 | (strcmp(mse->level, "raid0") != 0 && | |
476 | strcmp(mse->level, "linear") != 0)) | |
5787fa49 | 477 | ) { |
e0d19036 | 478 | struct state *st = malloc(sizeof *st); |
98c6faba NB |
479 | mdu_array_info_t array; |
480 | int fd; | |
e0d19036 NB |
481 | if (st == NULL) |
482 | continue; | |
483 | st->devname = strdup(get_md_name(mse->devnum)); | |
98c6faba NB |
484 | if ((fd = open(st->devname, O_RDONLY)) < 0 || |
485 | ioctl(fd, GET_ARRAY_INFO, &array)< 0) { | |
486 | /* no such array */ | |
487 | if (fd >=0) close(fd); | |
8bd2e0c3 | 488 | put_md_name(st->devname); |
98c6faba | 489 | free(st->devname); |
ca750d98 N |
490 | if (st->metadata) { |
491 | st->metadata->ss->free_super(st->metadata); | |
492 | free(st->metadata); | |
493 | } | |
98c6faba NB |
494 | free(st); |
495 | continue; | |
496 | } | |
dd0781e5 | 497 | close(fd); |
e0d19036 NB |
498 | st->utime = 0; |
499 | st->next = statelist; | |
500 | st->err = 1; | |
501 | st->devnum = mse->devnum; | |
502 | st->percent = -2; | |
503 | st->spare_group = NULL; | |
98c6faba | 504 | st->expected_spares = -1; |
ca750d98 N |
505 | if (strncmp(mse->metadata_version, "external:", 9) == 0 && |
506 | is_subarray(mse->metadata_version+9)) | |
507 | st->parent_dev = | |
508 | devname2devnum(mse->metadata_version+10); | |
509 | else | |
510 | st->parent_dev = NoMdDev; | |
511 | st->metadata = NULL; | |
e0d19036 | 512 | statelist = st; |
bc854448 N |
513 | if (test) |
514 | alert("TestMessage", st->devname, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); | |
4948b8f7 | 515 | alert("NewArray", st->devname, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
aa88f531 | 516 | new_found = 1; |
e0d19036 NB |
517 | } |
518 | } | |
519 | /* If an array has active < raid && spare == 0 && spare_group != NULL | |
520 | * Look for another array with spare > 0 and active == raid and same spare_group | |
521 | * if found, choose a device and hotremove/hotadd | |
522 | */ | |
edde9560 | 523 | if (share) for (st = statelist; st; st=st->next) |
e0d19036 NB |
524 | if (st->active < st->raid && |
525 | st->spare == 0 && | |
526 | st->spare_group != NULL) { | |
527 | struct state *st2; | |
528 | for (st2=statelist ; st2 ; st2=st2->next) | |
529 | if (st2 != st && | |
530 | st2->spare > 0 && | |
531 | st2->active == st2->raid && | |
532 | st2->spare_group != NULL && | |
533 | strcmp(st->spare_group, st2->spare_group) == 0) { | |
534 | /* try to remove and add */ | |
535 | int fd1 = open(st->devname, O_RDONLY); | |
536 | int fd2 = open(st2->devname, O_RDONLY); | |
537 | int dev = -1; | |
538 | int d; | |
539 | if (fd1 < 0 || fd2 < 0) { | |
540 | if (fd1>=0) close(fd1); | |
541 | if (fd2>=0) close(fd2); | |
542 | continue; | |
543 | } | |
e27d562b | 544 | for (d=st2->raid; d < MaxDisks; d++) { |
e0d19036 NB |
545 | if (st2->devid[d] > 0 && |
546 | st2->devstate[d] == 0) { | |
547 | dev = st2->devid[d]; | |
548 | break; | |
549 | } | |
550 | } | |
551 | if (dev > 0) { | |
a655e550 | 552 | struct mddev_dev devlist; |
c7b47447 N |
553 | char devname[20]; |
554 | devlist.next = NULL; | |
555 | devlist.used = 0; | |
556 | devlist.re_add = 0; | |
557 | devlist.writemostly = 0; | |
558 | devlist.devname = devname; | |
559 | sprintf(devname, "%d:%d", major(dev), minor(dev)); | |
560 | ||
561 | devlist.disposition = 'r'; | |
7d2e6486 | 562 | if (Manage_subdevs(st2->devname, fd2, &devlist, -1, 0) == 0) { |
c7b47447 | 563 | devlist.disposition = 'a'; |
7d2e6486 | 564 | if (Manage_subdevs(st->devname, fd1, &devlist, -1, 0) == 0) { |
4948b8f7 | 565 | alert("MoveSpare", st->devname, st2->devname, mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 NB |
566 | close(fd1); |
567 | close(fd2); | |
568 | break; | |
569 | } | |
7d2e6486 | 570 | else Manage_subdevs(st2->devname, fd2, &devlist, -1, 0); |
e0d19036 NB |
571 | } |
572 | } | |
573 | close(fd1); | |
574 | close(fd2); | |
575 | } | |
576 | } | |
aa88f531 NB |
577 | if (!new_found) { |
578 | if (oneshot) | |
579 | break; | |
580 | else | |
dd0781e5 | 581 | mdstat_wait(period); |
aa88f531 | 582 | } |
98c6faba | 583 | test = 0; |
52826846 | 584 | } |
b5e64645 NB |
585 | if (pidfile) |
586 | unlink(pidfile); | |
52826846 NB |
587 | return 0; |
588 | } | |
589 | ||
590 | ||
4948b8f7 | 591 | static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mailfrom, char *cmd, |
773135f5 | 592 | int dosyslog) |
52826846 | 593 | { |
773135f5 NB |
594 | int priority; |
595 | ||
cd29a5c8 NB |
596 | if (!cmd && !mailaddr) { |
597 | time_t now = time(0); | |
aba69144 | 598 | |
e0d19036 | 599 | printf("%1.15s: %s on %s %s\n", ctime(&now)+4, event, dev, disc?disc:"unknown device"); |
cd29a5c8 | 600 | } |
52826846 NB |
601 | if (cmd) { |
602 | int pid = fork(); | |
603 | switch(pid) { | |
604 | default: | |
605 | waitpid(pid, NULL, 0); | |
606 | break; | |
607 | case -1: | |
608 | break; | |
609 | case 0: | |
610 | execl(cmd, cmd, event, dev, disc, NULL); | |
611 | exit(2); | |
612 | } | |
613 | } | |
aba69144 NB |
614 | if (mailaddr && |
615 | (strncmp(event, "Fail", 4)==0 || | |
98c6faba | 616 | strncmp(event, "Test", 4)==0 || |
d1732eeb | 617 | strncmp(event, "Spares", 6)==0 || |
aa88f531 | 618 | strncmp(event, "Degrade", 7)==0)) { |
52826846 NB |
619 | FILE *mp = popen(Sendmail, "w"); |
620 | if (mp) { | |
008e1100 | 621 | FILE *mdstat; |
52826846 NB |
622 | char hname[256]; |
623 | gethostname(hname, sizeof(hname)); | |
624 | signal(SIGPIPE, SIG_IGN); | |
4948b8f7 NB |
625 | if (mailfrom) |
626 | fprintf(mp, "From: %s\n", mailfrom); | |
627 | else | |
628 | fprintf(mp, "From: " Name " monitoring <root>\n"); | |
52826846 NB |
629 | fprintf(mp, "To: %s\n", mailaddr); |
630 | fprintf(mp, "Subject: %s event on %s:%s\n\n", event, dev, hname); | |
631 | ||
632 | fprintf(mp, "This is an automatically generated mail message from " Name "\n"); | |
633 | fprintf(mp, "running on %s\n\n", hname); | |
634 | ||
635 | fprintf(mp, "A %s event had been detected on md device %s.\n\n", event, dev); | |
636 | ||
37dfc3d6 | 637 | if (disc && disc[0] != ' ') |
56eedc1a | 638 | fprintf(mp, "It could be related to component device %s.\n\n", disc); |
37dfc3d6 NB |
639 | if (disc && disc[0] == ' ') |
640 | fprintf(mp, "Extra information:%s.\n\n", disc); | |
52826846 NB |
641 | |
642 | fprintf(mp, "Faithfully yours, etc.\n"); | |
008e1100 NB |
643 | |
644 | mdstat = fopen("/proc/mdstat", "r"); | |
645 | if (mdstat) { | |
646 | char buf[8192]; | |
647 | int n; | |
a524a7ee | 648 | fprintf(mp, "\nP.S. The /proc/mdstat file currently contains the following:\n\n"); |
008e1100 | 649 | while ( (n=fread(buf, 1, sizeof(buf), mdstat)) > 0) |
9fca7d62 | 650 | n=fwrite(buf, 1, n, mp); /* yes, i don't care about the result */ |
008e1100 NB |
651 | fclose(mdstat); |
652 | } | |
6278fb3a | 653 | pclose(mp); |
52826846 NB |
654 | } |
655 | ||
656 | } | |
773135f5 NB |
657 | |
658 | /* log the event to syslog maybe */ | |
659 | if (dosyslog) { | |
660 | /* Log at a different severity depending on the event. | |
661 | * | |
662 | * These are the critical events: */ | |
663 | if (strncmp(event, "Fail", 4)==0 || | |
664 | strncmp(event, "Degrade", 7)==0 || | |
665 | strncmp(event, "DeviceDisappeared", 17)==0) | |
666 | priority = LOG_CRIT; | |
667 | /* Good to know about, but are not failures: */ | |
668 | else if (strncmp(event, "Rebuild", 7)==0 || | |
d1732eeb NB |
669 | strncmp(event, "MoveSpare", 9)==0 || |
670 | strncmp(event, "Spares", 6) != 0) | |
773135f5 NB |
671 | priority = LOG_WARNING; |
672 | /* Everything else: */ | |
673 | else | |
674 | priority = LOG_INFO; | |
675 | ||
676 | if (disc) | |
677 | syslog(priority, "%s event detected on md device %s, component device %s", event, dev, disc); | |
678 | else | |
679 | syslog(priority, "%s event detected on md device %s", event, dev); | |
680 | } | |
52826846 | 681 | } |
b90c0e9a NB |
682 | |
683 | /* Not really Monitor but ... */ | |
684 | int Wait(char *dev) | |
685 | { | |
686 | struct stat stb; | |
687 | int devnum; | |
688 | int rv = 1; | |
689 | ||
690 | if (stat(dev, &stb) != 0) { | |
691 | fprintf(stderr, Name ": Cannot find %s: %s\n", dev, | |
692 | strerror(errno)); | |
693 | return 2; | |
694 | } | |
c94709e8 | 695 | devnum = stat2devnum(&stb); |
b90c0e9a NB |
696 | |
697 | while(1) { | |
698 | struct mdstat_ent *ms = mdstat_read(1, 0); | |
699 | struct mdstat_ent *e; | |
700 | ||
701 | for (e=ms ; e; e=e->next) | |
702 | if (e->devnum == devnum) | |
703 | break; | |
704 | ||
705 | if (!e || e->percent < 0) { | |
e7783ee6 | 706 | if (e && e->metadata_version && |
c94709e8 DW |
707 | strncmp(e->metadata_version, "external:", 9) == 0) { |
708 | if (is_subarray(&e->metadata_version[9])) | |
709 | ping_monitor(&e->metadata_version[9]); | |
710 | else | |
711 | ping_monitor(devnum2devname(devnum)); | |
712 | } | |
b90c0e9a NB |
713 | free_mdstat(ms); |
714 | return rv; | |
715 | } | |
89a10d84 | 716 | free_mdstat(ms); |
b90c0e9a NB |
717 | rv = 0; |
718 | mdstat_wait(5); | |
719 | } | |
720 | } |