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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 | * |
4f589ad0 | 4 | * Copyright (C) 2001-2006 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 | |
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 | ||
9a9dab36 | 30 | #include "mdadm.h" |
52826846 NB |
31 | #include "md_p.h" |
32 | #include "md_u.h" | |
e0d19036 | 33 | #include <sys/wait.h> |
52826846 | 34 | #include <sys/signal.h> |
98c6faba | 35 | #include <values.h> |
773135f5 | 36 | #include <syslog.h> |
52826846 | 37 | |
4948b8f7 NB |
38 | static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mailfrom, |
39 | char *cmd, int dosyslog); | |
52826846 | 40 | |
e0d19036 NB |
41 | static char *percentalerts[] = { |
42 | "RebuildStarted", | |
43 | "Rebuild20", | |
44 | "Rebuild40", | |
45 | "Rebuild60", | |
46 | "Rebuild80", | |
47 | }; | |
48 | ||
e27d562b NB |
49 | /* The largest number of disks current arrays can manage is 384 |
50 | * This really should be dynamically, but that will have to wait | |
51 | * At least it isn't MD_SB_DISKS. | |
52 | */ | |
53 | #define MaxDisks 384 | |
cd29a5c8 | 54 | int Monitor(mddev_dev_t devlist, |
52826846 | 55 | char *mailaddr, char *alert_cmd, |
aa88f531 | 56 | int period, int daemonise, int scan, int oneshot, |
773135f5 | 57 | int dosyslog, char *config, int test, char* pidfile) |
52826846 NB |
58 | { |
59 | /* | |
60 | * Every few seconds, scan every md device looking for changes | |
61 | * When a change is found, log it, possibly run the alert command, | |
62 | * and possibly send Email | |
63 | * | |
64 | * For each array, we record: | |
65 | * Update time | |
66 | * active/working/failed/spare drives | |
67 | * State of each device. | |
e0d19036 | 68 | * %rebuilt if rebuilding |
52826846 NB |
69 | * |
70 | * If the update time changes, check out all the data again | |
71 | * It is possible that we cannot get the state of each device | |
72 | * due to bugs in the md kernel module. | |
e0d19036 NB |
73 | * We also read /proc/mdstat to get rebuild percent, |
74 | * and to get state on all active devices incase of kernel bug. | |
52826846 | 75 | * |
e0d19036 NB |
76 | * Events are: |
77 | * Fail | |
78 | * An active device had Faulty set or Active/Sync removed | |
79 | * FailSpare | |
80 | * A spare device had Faulty set | |
81 | * SpareActive | |
82 | * An active device had a reverse transition | |
83 | * RebuildStarted | |
84 | * percent went from -1 to +ve | |
85 | * Rebuild20 Rebuild40 Rebuild60 Rebuild80 | |
86 | * percent went from below to not-below that number | |
87 | * DeviceDisappeared | |
88 | * Couldn't access a device which was previously visible | |
52826846 NB |
89 | * |
90 | * if we detect an array with active<raid and spare==0 | |
91 | * we look at other arrays that have same spare-group | |
92 | * If we find one with active==raid and spare>0, | |
93 | * and if we can get_disk_info and find a name | |
94 | * Then we hot-remove and hot-add to the other array | |
95 | * | |
e0d19036 NB |
96 | * If devlist is NULL, then we can monitor everything because --scan |
97 | * was given. We get an initial list from config file and add anything | |
98 | * that appears in /proc/mdstat | |
52826846 NB |
99 | */ |
100 | ||
101 | struct state { | |
102 | char *devname; | |
e0d19036 | 103 | int devnum; /* to sync with mdstat info */ |
52826846 NB |
104 | long utime; |
105 | int err; | |
e0d19036 NB |
106 | char *spare_group; |
107 | int active, working, failed, spare, raid; | |
feb716e9 | 108 | int expected_spares; |
e27d562b NB |
109 | int devstate[MaxDisks]; |
110 | int devid[MaxDisks]; | |
e0d19036 | 111 | int percent; |
52826846 NB |
112 | struct state *next; |
113 | } *statelist = NULL; | |
114 | int finished = 0; | |
e0d19036 | 115 | struct mdstat_ent *mdstat = NULL; |
4948b8f7 | 116 | char *mailfrom = NULL; |
e0d19036 | 117 | |
d013a55e | 118 | if (!mailaddr) { |
e0d19036 | 119 | mailaddr = conf_get_mailaddr(config); |
d013a55e | 120 | if (mailaddr && ! scan) |
56eedc1a | 121 | fprintf(stderr, Name ": Monitor using email address \"%s\" from config file\n", |
d013a55e NB |
122 | mailaddr); |
123 | } | |
4948b8f7 NB |
124 | mailfrom = conf_get_mailfrom(config); |
125 | ||
d013a55e | 126 | if (!alert_cmd) { |
e0d19036 | 127 | alert_cmd = conf_get_program(config); |
d013a55e | 128 | if (alert_cmd && ! scan) |
56eedc1a | 129 | fprintf(stderr, Name ": Monitor using program \"%s\" from config file\n", |
d013a55e NB |
130 | alert_cmd); |
131 | } | |
56eedc1a NB |
132 | if (scan && !mailaddr && !alert_cmd) { |
133 | fprintf(stderr, Name ": No mail address or alert command - not monitoring.\n"); | |
d013a55e | 134 | return 1; |
56eedc1a | 135 | } |
d013a55e NB |
136 | |
137 | if (daemonise) { | |
138 | int pid = fork(); | |
139 | if (pid > 0) { | |
b5e64645 NB |
140 | if (!pidfile) |
141 | printf("%d\n", pid); | |
142 | else { | |
143 | FILE *pid_file; | |
144 | pid_file=fopen(pidfile, "w"); | |
145 | if (!pid_file) | |
146 | perror("cannot create pid file"); | |
147 | else { | |
148 | fprintf(pid_file,"%d\n", pid); | |
149 | fclose(pid_file); | |
150 | } | |
151 | } | |
d013a55e NB |
152 | return 0; |
153 | } | |
154 | if (pid < 0) { | |
155 | perror("daemonise"); | |
156 | return 1; | |
157 | } | |
158 | close(0); | |
159 | open("/dev/null", 3); | |
160 | dup2(0,1); | |
161 | dup2(0,2); | |
162 | setsid(); | |
163 | } | |
e0d19036 NB |
164 | |
165 | if (devlist == NULL) { | |
166 | mddev_ident_t mdlist = conf_get_ident(config, NULL); | |
167 | for (; mdlist; mdlist=mdlist->next) { | |
168 | struct state *st = malloc(sizeof *st); | |
169 | if (st == NULL) | |
170 | continue; | |
171 | st->devname = strdup(mdlist->devname); | |
172 | st->utime = 0; | |
173 | st->next = statelist; | |
d013a55e | 174 | st->err = 0; |
98c6faba | 175 | st->devnum = MAXINT; |
e0d19036 | 176 | st->percent = -2; |
feb716e9 | 177 | st->expected_spares = mdlist->spare_disks; |
e0d19036 NB |
178 | if (mdlist->spare_group) |
179 | st->spare_group = strdup(mdlist->spare_group); | |
180 | else | |
181 | st->spare_group = NULL; | |
182 | statelist = st; | |
183 | } | |
184 | } else { | |
cd29a5c8 | 185 | mddev_dev_t dv; |
e0d19036 | 186 | for (dv=devlist ; dv; dv=dv->next) { |
e5329c37 | 187 | mddev_ident_t mdlist = conf_get_ident(config, dv->devname); |
e0d19036 NB |
188 | struct state *st = malloc(sizeof *st); |
189 | if (st == NULL) | |
190 | continue; | |
191 | st->devname = strdup(dv->devname); | |
192 | st->utime = 0; | |
193 | st->next = statelist; | |
d013a55e | 194 | st->err = 0; |
98c6faba | 195 | st->devnum = MAXINT; |
e0d19036 | 196 | st->percent = -2; |
feb716e9 | 197 | st->expected_spares = -1; |
e0d19036 | 198 | st->spare_group = NULL; |
e5329c37 NB |
199 | if (mdlist) { |
200 | st->expected_spares = mdlist->spare_disks; | |
201 | if (mdlist->spare_group) | |
202 | st->spare_group = strdup(mdlist->spare_group); | |
203 | } | |
e0d19036 NB |
204 | statelist = st; |
205 | } | |
206 | } | |
207 | ||
208 | ||
209 | while (! finished) { | |
aa88f531 | 210 | int new_found = 0; |
e0d19036 NB |
211 | struct state *st; |
212 | ||
213 | if (mdstat) | |
214 | free_mdstat(mdstat); | |
22a88995 | 215 | mdstat = mdstat_read(oneshot?0:1, 0); |
e0d19036 NB |
216 | |
217 | for (st=statelist; st; st=st->next) { | |
52826846 | 218 | mdu_array_info_t array; |
dd0781e5 | 219 | struct mdstat_ent *mse = NULL, *mse2; |
e0d19036 | 220 | char *dev = st->devname; |
52826846 | 221 | int fd; |
98c6faba | 222 | unsigned int i; |
e0d19036 | 223 | |
98c6faba | 224 | if (test) |
4948b8f7 | 225 | alert("TestMessage", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
52826846 NB |
226 | fd = open(dev, O_RDONLY); |
227 | if (fd < 0) { | |
228 | if (!st->err) | |
e0d19036 | 229 | alert("DeviceDisappeared", dev, NULL, |
4948b8f7 | 230 | mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 | 231 | /* fprintf(stderr, Name ": cannot open %s: %s\n", |
52826846 | 232 | dev, strerror(errno)); |
e0d19036 | 233 | */ st->err=1; |
52826846 NB |
234 | continue; |
235 | } | |
236 | if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { | |
237 | if (!st->err) | |
e0d19036 | 238 | alert("DeviceDisappeared", dev, NULL, |
4948b8f7 | 239 | mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 | 240 | /* fprintf(stderr, Name ": cannot get array info for %s: %s\n", |
52826846 | 241 | dev, strerror(errno)); |
e0d19036 | 242 | */ st->err=1; |
52826846 NB |
243 | close(fd); |
244 | continue; | |
245 | } | |
e5329c37 NB |
246 | if (array.level != 1 && array.level != 5 && array.level != -4 && |
247 | array.level != 6 && array.level != 10) { | |
5787fa49 NB |
248 | if (!st->err) |
249 | alert("DeviceDisappeared", dev, "Wrong-Level", | |
4948b8f7 | 250 | mailaddr, mailfrom, alert_cmd, dosyslog); |
5787fa49 NB |
251 | st->err = 1; |
252 | close(fd); | |
253 | continue; | |
254 | } | |
98c6faba | 255 | if (st->devnum == MAXINT) { |
e0d19036 NB |
256 | struct stat stb; |
257 | if (fstat(fd, &stb) == 0 && | |
98c6faba | 258 | (S_IFMT&stb.st_mode)==S_IFBLK) { |
0df46c2a NB |
259 | if (major(stb.st_rdev) == MD_MAJOR) |
260 | st->devnum = minor(stb.st_rdev); | |
98c6faba | 261 | else |
0df46c2a | 262 | st->devnum = -1- (minor(stb.st_rdev)>>6); |
98c6faba | 263 | } |
e0d19036 NB |
264 | } |
265 | ||
dd0781e5 NB |
266 | for (mse2 = mdstat ; mse2 ; mse2=mse2->next) |
267 | if (mse2->devnum == st->devnum) { | |
268 | mse2->devnum = MAXINT; /* flag it as "used" */ | |
269 | mse = mse2; | |
270 | } | |
e0d19036 | 271 | |
52826846 | 272 | if (st->utime == array.utime && |
e0d19036 NB |
273 | st->failed == array.failed_disks && |
274 | st->working == array.working_disks && | |
275 | st->spare == array.spare_disks && | |
276 | (mse == NULL || ( | |
277 | mse->percent == st->percent | |
278 | ))) { | |
52826846 | 279 | close(fd); |
e0d19036 | 280 | st->err = 0; |
52826846 NB |
281 | continue; |
282 | } | |
aa88f531 NB |
283 | if (st->utime == 0 && /* new array */ |
284 | mse && /* is in /proc/mdstat */ | |
285 | mse->pattern && strchr(mse->pattern, '_') /* degraded */ | |
286 | ) | |
4948b8f7 | 287 | alert("DegradedArray", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
aa88f531 | 288 | |
feb716e9 NB |
289 | if (st->utime == 0 && /* new array */ |
290 | st->expected_spares > 0 && | |
291 | array.spare_disks < st->expected_spares) | |
4948b8f7 | 292 | alert("SparesMissing", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 NB |
293 | if (mse && |
294 | st->percent == -1 && | |
295 | mse->percent >= 0) | |
4948b8f7 | 296 | alert("RebuildStarted", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 NB |
297 | if (mse && |
298 | st->percent >= 0 && | |
299 | mse->percent >= 0 && | |
300 | (mse->percent / 20) > (st->percent / 20)) | |
301 | alert(percentalerts[mse->percent/20], | |
4948b8f7 | 302 | dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 | 303 | |
98c6faba NB |
304 | if (mse && |
305 | mse->percent == -1 && | |
306 | st->percent >= 0) | |
4948b8f7 | 307 | alert("RebuildFinished", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
98c6faba | 308 | |
e0d19036 NB |
309 | if (mse) |
310 | st->percent = mse->percent; | |
e27d562b NB |
311 | |
312 | for (i=0; i<MaxDisks; i++) { | |
52826846 | 313 | mdu_disk_info_t disc; |
e0d19036 NB |
314 | int newstate=0; |
315 | int change; | |
316 | char *dv = NULL; | |
52826846 | 317 | disc.number = i; |
e27d562b NB |
318 | if (i > array.raid_disks + array.nr_disks) { |
319 | newstate = 0; | |
320 | disc.major = disc.minor = 0; | |
321 | } else if (ioctl(fd, GET_DISK_INFO, &disc)>= 0) { | |
e0d19036 | 322 | newstate = disc.state; |
16c6fa80 | 323 | dv = map_dev(disc.major, disc.minor, 1); |
e27d562b | 324 | } else if (mse && mse->pattern && i < strlen(mse->pattern)) { |
e0d19036 NB |
325 | switch(mse->pattern[i]) { |
326 | case 'U': newstate = 6 /* ACTIVE/SYNC */; break; | |
327 | case '_': newstate = 0; break; | |
52826846 | 328 | } |
e27d562b NB |
329 | disc.major = disc.minor = 0; |
330 | } | |
fe394e5e NB |
331 | if (dv == NULL && st->devid[i]) |
332 | dv = map_dev(major(st->devid[i]), | |
16c6fa80 | 333 | minor(st->devid[i]), 1); |
e0d19036 NB |
334 | change = newstate ^ st->devstate[i]; |
335 | if (st->utime && change && !st->err) { | |
98c6faba | 336 | if (i < (unsigned)array.raid_disks && |
e0d19036 NB |
337 | (((newstate&change)&(1<<MD_DISK_FAULTY)) || |
338 | ((st->devstate[i]&change)&(1<<MD_DISK_ACTIVE)) || | |
339 | ((st->devstate[i]&change)&(1<<MD_DISK_SYNC))) | |
340 | ) | |
4948b8f7 | 341 | alert("Fail", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog); |
98c6faba | 342 | else if (i >= (unsigned)array.raid_disks && |
e0d19036 | 343 | (disc.major || disc.minor) && |
0df46c2a | 344 | st->devid[i] == makedev(disc.major, disc.minor) && |
e0d19036 NB |
345 | ((newstate&change)&(1<<MD_DISK_FAULTY)) |
346 | ) | |
4948b8f7 | 347 | alert("FailSpare", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog); |
98c6faba | 348 | else if (i < (unsigned)array.raid_disks && |
e0d19036 NB |
349 | (((st->devstate[i]&change)&(1<<MD_DISK_FAULTY)) || |
350 | ((newstate&change)&(1<<MD_DISK_ACTIVE)) || | |
351 | ((newstate&change)&(1<<MD_DISK_SYNC))) | |
352 | ) | |
4948b8f7 | 353 | alert("SpareActive", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog); |
52826846 | 354 | } |
e0d19036 | 355 | st->devstate[i] = disc.state; |
0df46c2a | 356 | st->devid[i] = makedev(disc.major, disc.minor); |
52826846 NB |
357 | } |
358 | close(fd); | |
359 | st->active = array.active_disks; | |
360 | st->working = array.working_disks; | |
361 | st->spare = array.spare_disks; | |
362 | st->failed = array.failed_disks; | |
363 | st->utime = array.utime; | |
e0d19036 NB |
364 | st->raid = array.raid_disks; |
365 | st->err = 0; | |
52826846 | 366 | } |
e0d19036 NB |
367 | /* now check if there are any new devices found in mdstat */ |
368 | if (scan) { | |
369 | struct mdstat_ent *mse; | |
370 | for (mse=mdstat; mse; mse=mse->next) | |
98c6faba | 371 | if (mse->devnum != MAXINT && |
5787fa49 NB |
372 | (strcmp(mse->level, "raid1")==0 || |
373 | strcmp(mse->level, "raid5")==0 || | |
374 | strcmp(mse->level, "multipath")==0) | |
375 | ) { | |
e0d19036 | 376 | struct state *st = malloc(sizeof *st); |
98c6faba NB |
377 | mdu_array_info_t array; |
378 | int fd; | |
e0d19036 NB |
379 | if (st == NULL) |
380 | continue; | |
381 | st->devname = strdup(get_md_name(mse->devnum)); | |
98c6faba NB |
382 | if ((fd = open(st->devname, O_RDONLY)) < 0 || |
383 | ioctl(fd, GET_ARRAY_INFO, &array)< 0) { | |
384 | /* no such array */ | |
385 | if (fd >=0) close(fd); | |
386 | free(st->devname); | |
387 | free(st); | |
e7bb5d23 | 388 | put_md_name(st->devname); |
98c6faba NB |
389 | continue; |
390 | } | |
dd0781e5 | 391 | close(fd); |
e0d19036 NB |
392 | st->utime = 0; |
393 | st->next = statelist; | |
394 | st->err = 1; | |
395 | st->devnum = mse->devnum; | |
396 | st->percent = -2; | |
397 | st->spare_group = NULL; | |
98c6faba | 398 | st->expected_spares = -1; |
e0d19036 | 399 | statelist = st; |
4948b8f7 | 400 | alert("NewArray", st->devname, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); |
aa88f531 | 401 | new_found = 1; |
e0d19036 NB |
402 | } |
403 | } | |
404 | /* If an array has active < raid && spare == 0 && spare_group != NULL | |
405 | * Look for another array with spare > 0 and active == raid and same spare_group | |
406 | * if found, choose a device and hotremove/hotadd | |
407 | */ | |
408 | for (st = statelist; st; st=st->next) | |
409 | if (st->active < st->raid && | |
410 | st->spare == 0 && | |
411 | st->spare_group != NULL) { | |
412 | struct state *st2; | |
413 | for (st2=statelist ; st2 ; st2=st2->next) | |
414 | if (st2 != st && | |
415 | st2->spare > 0 && | |
416 | st2->active == st2->raid && | |
417 | st2->spare_group != NULL && | |
418 | strcmp(st->spare_group, st2->spare_group) == 0) { | |
419 | /* try to remove and add */ | |
420 | int fd1 = open(st->devname, O_RDONLY); | |
421 | int fd2 = open(st2->devname, O_RDONLY); | |
422 | int dev = -1; | |
423 | int d; | |
424 | if (fd1 < 0 || fd2 < 0) { | |
425 | if (fd1>=0) close(fd1); | |
426 | if (fd2>=0) close(fd2); | |
427 | continue; | |
428 | } | |
e27d562b | 429 | for (d=st2->raid; d < MaxDisks; d++) { |
e0d19036 NB |
430 | if (st2->devid[d] > 0 && |
431 | st2->devstate[d] == 0) { | |
432 | dev = st2->devid[d]; | |
433 | break; | |
434 | } | |
435 | } | |
436 | if (dev > 0) { | |
437 | if (ioctl(fd2, HOT_REMOVE_DISK, | |
438 | (unsigned long)dev) == 0) { | |
439 | if (ioctl(fd1, HOT_ADD_DISK, | |
440 | (unsigned long)dev) == 0) { | |
4948b8f7 | 441 | alert("MoveSpare", st->devname, st2->devname, mailaddr, mailfrom, alert_cmd, dosyslog); |
e0d19036 NB |
442 | close(fd1); |
443 | close(fd2); | |
444 | break; | |
445 | } | |
446 | else ioctl(fd2, HOT_ADD_DISK, (unsigned long) dev); | |
447 | } | |
448 | } | |
449 | close(fd1); | |
450 | close(fd2); | |
451 | } | |
452 | } | |
aa88f531 NB |
453 | if (!new_found) { |
454 | if (oneshot) | |
455 | break; | |
456 | else | |
dd0781e5 | 457 | mdstat_wait(period); |
aa88f531 | 458 | } |
98c6faba | 459 | test = 0; |
52826846 | 460 | } |
b5e64645 NB |
461 | if (pidfile) |
462 | unlink(pidfile); | |
52826846 NB |
463 | return 0; |
464 | } | |
465 | ||
466 | ||
4948b8f7 | 467 | static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mailfrom, char *cmd, |
773135f5 | 468 | int dosyslog) |
52826846 | 469 | { |
773135f5 NB |
470 | int priority; |
471 | ||
cd29a5c8 NB |
472 | if (!cmd && !mailaddr) { |
473 | time_t now = time(0); | |
474 | ||
e0d19036 | 475 | printf("%1.15s: %s on %s %s\n", ctime(&now)+4, event, dev, disc?disc:"unknown device"); |
cd29a5c8 | 476 | } |
52826846 NB |
477 | if (cmd) { |
478 | int pid = fork(); | |
479 | switch(pid) { | |
480 | default: | |
481 | waitpid(pid, NULL, 0); | |
482 | break; | |
483 | case -1: | |
484 | break; | |
485 | case 0: | |
486 | execl(cmd, cmd, event, dev, disc, NULL); | |
487 | exit(2); | |
488 | } | |
489 | } | |
aa88f531 NB |
490 | if (mailaddr && |
491 | (strncmp(event, "Fail", 4)==0 || | |
98c6faba | 492 | strncmp(event, "Test", 4)==0 || |
d1732eeb | 493 | strncmp(event, "Spares", 6)==0 || |
aa88f531 | 494 | strncmp(event, "Degrade", 7)==0)) { |
52826846 NB |
495 | FILE *mp = popen(Sendmail, "w"); |
496 | if (mp) { | |
008e1100 | 497 | FILE *mdstat; |
52826846 NB |
498 | char hname[256]; |
499 | gethostname(hname, sizeof(hname)); | |
500 | signal(SIGPIPE, SIG_IGN); | |
4948b8f7 NB |
501 | if (mailfrom) |
502 | fprintf(mp, "From: %s\n", mailfrom); | |
503 | else | |
504 | fprintf(mp, "From: " Name " monitoring <root>\n"); | |
52826846 NB |
505 | fprintf(mp, "To: %s\n", mailaddr); |
506 | fprintf(mp, "Subject: %s event on %s:%s\n\n", event, dev, hname); | |
507 | ||
508 | fprintf(mp, "This is an automatically generated mail message from " Name "\n"); | |
509 | fprintf(mp, "running on %s\n\n", hname); | |
510 | ||
511 | fprintf(mp, "A %s event had been detected on md device %s.\n\n", event, dev); | |
512 | ||
513 | if (disc) | |
56eedc1a | 514 | fprintf(mp, "It could be related to component device %s.\n\n", disc); |
52826846 NB |
515 | |
516 | fprintf(mp, "Faithfully yours, etc.\n"); | |
008e1100 NB |
517 | |
518 | mdstat = fopen("/proc/mdstat", "r"); | |
519 | if (mdstat) { | |
520 | char buf[8192]; | |
521 | int n; | |
a524a7ee | 522 | fprintf(mp, "\nP.S. The /proc/mdstat file currently contains the following:\n\n"); |
008e1100 | 523 | while ( (n=fread(buf, 1, sizeof(buf), mdstat)) > 0) |
9fca7d62 | 524 | n=fwrite(buf, 1, n, mp); /* yes, i don't care about the result */ |
008e1100 NB |
525 | fclose(mdstat); |
526 | } | |
52826846 NB |
527 | fclose(mp); |
528 | } | |
529 | ||
530 | } | |
773135f5 NB |
531 | |
532 | /* log the event to syslog maybe */ | |
533 | if (dosyslog) { | |
534 | /* Log at a different severity depending on the event. | |
535 | * | |
536 | * These are the critical events: */ | |
537 | if (strncmp(event, "Fail", 4)==0 || | |
538 | strncmp(event, "Degrade", 7)==0 || | |
539 | strncmp(event, "DeviceDisappeared", 17)==0) | |
540 | priority = LOG_CRIT; | |
541 | /* Good to know about, but are not failures: */ | |
542 | else if (strncmp(event, "Rebuild", 7)==0 || | |
d1732eeb NB |
543 | strncmp(event, "MoveSpare", 9)==0 || |
544 | strncmp(event, "Spares", 6) != 0) | |
773135f5 NB |
545 | priority = LOG_WARNING; |
546 | /* Everything else: */ | |
547 | else | |
548 | priority = LOG_INFO; | |
549 | ||
550 | if (disc) | |
551 | syslog(priority, "%s event detected on md device %s, component device %s", event, dev, disc); | |
552 | else | |
553 | syslog(priority, "%s event detected on md device %s", event, dev); | |
554 | } | |
52826846 | 555 | } |