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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> |
4450e59f | 29 | #include <limits.h> |
773135f5 | 30 | #include <syslog.h> |
af3396da | 31 | #ifndef NO_LIBUDEV |
49b69533 | 32 | #include <libudev.h> |
af3396da | 33 | #endif |
52826846 | 34 | |
2e0172b1 | 35 | struct state { |
84d969be KT |
36 | char devname[MD_NAME_MAX + sizeof("/dev/md/")]; /* length of "/dev/md/" + device name + terminating byte*/ |
37 | char devnm[MD_NAME_MAX]; /* to sync with mdstat info */ | |
1d13b599 | 38 | unsigned int utime; |
2e0172b1 N |
39 | int err; |
40 | char *spare_group; | |
41 | int active, working, failed, spare, raid; | |
f1661bd7 | 42 | int from_config; |
73ff0732 | 43 | int from_auto; |
2e0172b1 | 44 | int expected_spares; |
b0599bda N |
45 | int devstate[MAX_DISKS]; |
46 | dev_t devid[MAX_DISKS]; | |
2e0172b1 | 47 | int percent; |
84d969be KT |
48 | char parent_devnm[MD_NAME_MAX]; /* For subarray, devnm of parent. |
49 | * For others, "" | |
50 | */ | |
2e0172b1 | 51 | struct supertype *metadata; |
c3621c0a ML |
52 | struct state *subarray;/* for a container it is a link to first subarray |
53 | * for a subarray it is a link to next subarray | |
54 | * in the same container */ | |
55 | struct state *parent; /* for a subarray it is a link to its container | |
56 | */ | |
2e0172b1 N |
57 | struct state *next; |
58 | }; | |
59 | ||
e0bd6a96 | 60 | struct alert_info { |
b3015166 | 61 | char hostname[HOST_NAME_MAX]; |
e0bd6a96 N |
62 | char *mailaddr; |
63 | char *mailfrom; | |
64 | char *alert_cmd; | |
65 | int dosyslog; | |
b3015166 MG |
66 | int test; |
67 | } info; | |
2e0172b1 N |
68 | static int make_daemon(char *pidfile); |
69 | static int check_one_sharer(int scan); | |
7f3b2d1d | 70 | static void write_autorebuild_pid(void); |
b3015166 MG |
71 | static void alert(const char *event, const char *dev, const char *disc); |
72 | static int check_array(struct state *st, struct mdstat_ent *mdstat, int increments, char *prefer); | |
73 | static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist); | |
74 | static void try_spare_migration(struct state *statelist); | |
c3621c0a | 75 | static void link_containers_with_subarrays(struct state *list); |
55c10e4d | 76 | static void free_statelist(struct state *statelist); |
af3396da | 77 | #ifndef NO_LIBUDEV |
49b69533 | 78 | static int check_udev_activity(void); |
af3396da | 79 | #endif |
2e0172b1 | 80 | |
a655e550 | 81 | int Monitor(struct mddev_dev *devlist, |
52826846 | 82 | char *mailaddr, char *alert_cmd, |
95c50205 N |
83 | struct context *c, |
84 | int daemonise, int oneshot, | |
85 | int dosyslog, char *pidfile, int increments, | |
86 | int share) | |
52826846 NB |
87 | { |
88 | /* | |
89 | * Every few seconds, scan every md device looking for changes | |
90 | * When a change is found, log it, possibly run the alert command, | |
91 | * and possibly send Email | |
92 | * | |
93 | * For each array, we record: | |
94 | * Update time | |
95 | * active/working/failed/spare drives | |
96 | * State of each device. | |
e0d19036 | 97 | * %rebuilt if rebuilding |
52826846 NB |
98 | * |
99 | * If the update time changes, check out all the data again | |
100 | * It is possible that we cannot get the state of each device | |
101 | * due to bugs in the md kernel module. | |
e0d19036 NB |
102 | * We also read /proc/mdstat to get rebuild percent, |
103 | * and to get state on all active devices incase of kernel bug. | |
52826846 | 104 | * |
e0d19036 NB |
105 | * Events are: |
106 | * Fail | |
107 | * An active device had Faulty set or Active/Sync removed | |
108 | * FailSpare | |
109 | * A spare device had Faulty set | |
110 | * SpareActive | |
111 | * An active device had a reverse transition | |
112 | * RebuildStarted | |
113 | * percent went from -1 to +ve | |
9a36a9b7 ZB |
114 | * RebuildNN |
115 | * percent went from below to not-below NN% | |
e0d19036 NB |
116 | * DeviceDisappeared |
117 | * Couldn't access a device which was previously visible | |
52826846 NB |
118 | * |
119 | * if we detect an array with active<raid and spare==0 | |
120 | * we look at other arrays that have same spare-group | |
121 | * If we find one with active==raid and spare>0, | |
122 | * and if we can get_disk_info and find a name | |
123 | * Then we hot-remove and hot-add to the other array | |
124 | * | |
f40ac0e7 | 125 | * If devlist is NULL, then we can monitor everything if --scan |
e0d19036 NB |
126 | * was given. We get an initial list from config file and add anything |
127 | * that appears in /proc/mdstat | |
52826846 NB |
128 | */ |
129 | ||
2e0172b1 | 130 | struct state *statelist = NULL; |
52826846 | 131 | int finished = 0; |
e0d19036 | 132 | struct mdstat_ent *mdstat = NULL; |
72362f18 | 133 | char *mailfrom; |
9f3dd454 | 134 | struct mddev_ident *mdlist; |
af3396da | 135 | int delay_for_event = c->delay; |
e0d19036 | 136 | |
f40ac0e7 BK |
137 | if (devlist && c->scan) { |
138 | pr_err("Devices list and --scan option cannot be combined - not monitoring.\n"); | |
139 | return 1; | |
140 | } | |
141 | ||
f5ff2988 | 142 | if (!mailaddr) |
8aec876d | 143 | mailaddr = conf_get_mailaddr(); |
4948b8f7 | 144 | |
f5ff2988 | 145 | if (!alert_cmd) |
8aec876d | 146 | alert_cmd = conf_get_program(); |
f5ff2988 KT |
147 | |
148 | mailfrom = conf_get_mailfrom(); | |
149 | ||
95c50205 | 150 | if (c->scan && !mailaddr && !alert_cmd && !dosyslog) { |
e7b84f9d | 151 | pr_err("No mail address or alert command - not monitoring.\n"); |
d013a55e | 152 | return 1; |
56eedc1a | 153 | } |
f5ff2988 KT |
154 | |
155 | if (c->verbose) { | |
156 | pr_err("Monitor is started with delay %ds\n", c->delay); | |
157 | if (mailaddr) | |
158 | pr_err("Monitor using email address %s\n", mailaddr); | |
159 | if (alert_cmd) | |
160 | pr_err("Monitor using program %s\n", alert_cmd); | |
161 | } | |
162 | ||
e0bd6a96 N |
163 | info.alert_cmd = alert_cmd; |
164 | info.mailaddr = mailaddr; | |
165 | info.mailfrom = mailfrom; | |
166 | info.dosyslog = dosyslog; | |
b3015166 MG |
167 | info.test = c->test; |
168 | ||
169 | if (gethostname(info.hostname, sizeof(info.hostname)) != 0) { | |
170 | pr_err("Cannot get hostname.\n"); | |
171 | return 1; | |
172 | } | |
173 | info.hostname[sizeof(info.hostname) - 1] = '\0'; | |
d013a55e | 174 | |
7f3b2d1d BK |
175 | if (share){ |
176 | if (check_one_sharer(c->scan)) | |
177 | return 1; | |
178 | } | |
179 | ||
44d337f0 AC |
180 | if (daemonise) { |
181 | int rv = make_daemon(pidfile); | |
182 | if (rv >= 0) | |
183 | return rv; | |
184 | } | |
e0d19036 | 185 | |
1011e834 | 186 | if (share) |
7f3b2d1d | 187 | write_autorebuild_pid(); |
edde9560 | 188 | |
e0d19036 | 189 | if (devlist == NULL) { |
9f3dd454 | 190 | mdlist = conf_get_ident(NULL); |
f566ef45 | 191 | for (; mdlist; mdlist = mdlist->next) { |
fe056d1f | 192 | struct state *st; |
f566ef45 | 193 | |
fe056d1f N |
194 | if (mdlist->devname == NULL) |
195 | continue; | |
112cace6 N |
196 | if (strcasecmp(mdlist->devname, "<ignore>") == 0) |
197 | continue; | |
8b668d4a LF |
198 | if (!is_mddev(mdlist->devname)) |
199 | continue; | |
e702f392 | 200 | |
503975b9 | 201 | st = xcalloc(1, sizeof *st); |
84d969be KT |
202 | snprintf(st->devname, MD_NAME_MAX + sizeof("/dev/md/"), |
203 | "/dev/md/%s", basename(mdlist->devname)); | |
e0d19036 | 204 | st->next = statelist; |
4dd2df09 | 205 | st->devnm[0] = 0; |
9dad51d4 | 206 | st->percent = RESYNC_UNKNOWN; |
f1661bd7 | 207 | st->from_config = 1; |
feb716e9 | 208 | st->expected_spares = mdlist->spare_disks; |
e0d19036 | 209 | if (mdlist->spare_group) |
503975b9 | 210 | st->spare_group = xstrdup(mdlist->spare_group); |
e0d19036 NB |
211 | statelist = st; |
212 | } | |
213 | } else { | |
a655e550 | 214 | struct mddev_dev *dv; |
f566ef45 JS |
215 | |
216 | for (dv = devlist; dv; dv = dv->next) { | |
e702f392 KT |
217 | struct state *st; |
218 | ||
8b668d4a LF |
219 | if (!is_mddev(dv->devname)) |
220 | continue; | |
e702f392 KT |
221 | |
222 | st = xcalloc(1, sizeof *st); | |
9f3dd454 | 223 | mdlist = conf_get_ident(dv->devname); |
84d969be | 224 | snprintf(st->devname, MD_NAME_MAX + sizeof("/dev/md/"), "%s", dv->devname); |
e0d19036 | 225 | st->next = statelist; |
4dd2df09 | 226 | st->devnm[0] = 0; |
9dad51d4 | 227 | st->percent = RESYNC_UNKNOWN; |
feb716e9 | 228 | st->expected_spares = -1; |
e5329c37 NB |
229 | if (mdlist) { |
230 | st->expected_spares = mdlist->spare_disks; | |
231 | if (mdlist->spare_group) | |
503975b9 | 232 | st->spare_group = xstrdup(mdlist->spare_group); |
e5329c37 | 233 | } |
e0d19036 NB |
234 | statelist = st; |
235 | } | |
236 | } | |
237 | ||
f566ef45 | 238 | while (!finished) { |
aa88f531 | 239 | int new_found = 0; |
73ff0732 | 240 | struct state *st, **stp; |
a90e1050 | 241 | int anydegraded = 0; |
007087d0 | 242 | int anyredundant = 0; |
e0d19036 NB |
243 | |
244 | if (mdstat) | |
245 | free_mdstat(mdstat); | |
f566ef45 | 246 | mdstat = mdstat_read(oneshot ? 0 : 1, 0); |
e0d19036 | 247 | |
007087d0 | 248 | for (st = statelist; st; st = st->next) { |
b3015166 | 249 | if (check_array(st, mdstat, increments, c->prefer)) |
a90e1050 | 250 | anydegraded = 1; |
007087d0 MT |
251 | /* for external arrays, metadata is filled for |
252 | * containers only | |
253 | */ | |
254 | if (st->metadata && st->metadata->ss->external) | |
255 | continue; | |
256 | if (st->err == 0 && !anyredundant) | |
257 | anyredundant = 1; | |
258 | } | |
1011e834 | 259 | |
e0d19036 | 260 | /* now check if there are any new devices found in mdstat */ |
95c50205 | 261 | if (c->scan) |
b3015166 | 262 | new_found = add_new_arrays(mdstat, &statelist); |
2e0172b1 | 263 | |
e0d19036 NB |
264 | /* If an array has active < raid && spare == 0 && spare_group != NULL |
265 | * Look for another array with spare > 0 and active == raid and same spare_group | |
49b69533 | 266 | * if found, choose a device and hotremove/hotadd |
e0d19036 | 267 | */ |
a90e1050 | 268 | if (share && anydegraded) |
b3015166 | 269 | try_spare_migration(statelist); |
aa88f531 NB |
270 | if (!new_found) { |
271 | if (oneshot) | |
272 | break; | |
007087d0 | 273 | else if (!anyredundant) { |
8c80d305 | 274 | pr_err("No array with redundancy detected, stopping\n"); |
007087d0 MT |
275 | break; |
276 | } | |
e2308733 | 277 | else { |
af3396da | 278 | #ifndef NO_LIBUDEV |
cab9c67d | 279 | /* |
af3396da MT |
280 | * Wait for udevd to finish new devices |
281 | * processing. | |
cab9c67d | 282 | */ |
af3396da MT |
283 | if (mdstat_wait(delay_for_event) && |
284 | check_udev_activity()) | |
49b69533 | 285 | pr_err("Error while waiting for UDEV to complete new devices processing\n"); |
af3396da MT |
286 | #else |
287 | int wait_result = mdstat_wait(delay_for_event); | |
288 | /* | |
289 | * Give chance to process new device | |
290 | */ | |
291 | if (wait_result != 0) { | |
292 | if (c->delay > 5) | |
293 | delay_for_event = 5; | |
294 | } else | |
295 | delay_for_event = c->delay; | |
296 | #endif | |
e2308733 MT |
297 | mdstat_close(); |
298 | } | |
aa88f531 | 299 | } |
b3015166 | 300 | info.test = 0; |
73ff0732 N |
301 | |
302 | for (stp = &statelist; (st = *stp) != NULL; ) { | |
303 | if (st->from_auto && st->err > 5) { | |
304 | *stp = st->next; | |
55c10e4d PB |
305 | if (st->spare_group) |
306 | free(st->spare_group); | |
307 | ||
73ff0732 N |
308 | free(st); |
309 | } else | |
310 | stp = &st->next; | |
311 | } | |
52826846 | 312 | } |
55c10e4d PB |
313 | |
314 | free_statelist(statelist); | |
b657208c | 315 | |
b5e64645 NB |
316 | if (pidfile) |
317 | unlink(pidfile); | |
52826846 NB |
318 | return 0; |
319 | } | |
320 | ||
2e0172b1 N |
321 | static int make_daemon(char *pidfile) |
322 | { | |
44d337f0 AC |
323 | /* Return: |
324 | * -1 in the forked daemon | |
325 | * 0 in the parent | |
326 | * 1 on error | |
327 | * so a none-negative becomes the exit code. | |
328 | */ | |
2e0172b1 N |
329 | int pid = fork(); |
330 | if (pid > 0) { | |
331 | if (!pidfile) | |
332 | printf("%d\n", pid); | |
333 | else { | |
ca4b156b MT |
334 | FILE *pid_file = NULL; |
335 | int fd = open(pidfile, O_WRONLY | O_CREAT | O_TRUNC, | |
336 | 0644); | |
337 | if (fd >= 0) | |
338 | pid_file = fdopen(fd, "w"); | |
2e0172b1 N |
339 | if (!pid_file) |
340 | perror("cannot create pid file"); | |
341 | else { | |
342 | fprintf(pid_file,"%d\n", pid); | |
343 | fclose(pid_file); | |
344 | } | |
345 | } | |
346 | return 0; | |
347 | } | |
348 | if (pid < 0) { | |
349 | perror("daemonise"); | |
350 | return 1; | |
351 | } | |
ff6bb131 | 352 | manage_fork_fds(0); |
2e0172b1 | 353 | setsid(); |
44d337f0 | 354 | return -1; |
2e0172b1 N |
355 | } |
356 | ||
357 | static int check_one_sharer(int scan) | |
358 | { | |
185ec439 CL |
359 | int pid; |
360 | FILE *comm_fp; | |
2e0172b1 | 361 | FILE *fp; |
7f3b2d1d BK |
362 | char comm_path[PATH_MAX]; |
363 | char path[PATH_MAX]; | |
185ec439 CL |
364 | char comm[20]; |
365 | ||
0011874f JS |
366 | sprintf(path, "%s/autorebuild.pid", MDMON_DIR); |
367 | fp = fopen(path, "r"); | |
2e0172b1 | 368 | if (fp) { |
71204a50 N |
369 | if (fscanf(fp, "%d", &pid) != 1) |
370 | pid = -1; | |
185ec439 CL |
371 | snprintf(comm_path, sizeof(comm_path), |
372 | "/proc/%d/comm", pid); | |
373 | comm_fp = fopen(comm_path, "r"); | |
374 | if (comm_fp) { | |
1c66260d | 375 | if (fscanf(comm_fp, "%19s", comm) && |
185ec439 CL |
376 | strncmp(basename(comm), Name, strlen(Name)) == 0) { |
377 | if (scan) { | |
378 | pr_err("Only one autorebuild process allowed in scan mode, aborting\n"); | |
379 | fclose(comm_fp); | |
380 | fclose(fp); | |
381 | return 1; | |
382 | } else { | |
383 | pr_err("Warning: One autorebuild process already running.\n"); | |
384 | } | |
2e0172b1 | 385 | } |
185ec439 | 386 | fclose(comm_fp); |
2e0172b1 N |
387 | } |
388 | fclose(fp); | |
389 | } | |
7f3b2d1d BK |
390 | return 0; |
391 | } | |
392 | ||
393 | static void write_autorebuild_pid() | |
394 | { | |
395 | char path[PATH_MAX]; | |
396 | int pid; | |
ca4b156b | 397 | FILE *fp = NULL; |
7f3b2d1d BK |
398 | sprintf(path, "%s/autorebuild.pid", MDMON_DIR); |
399 | ||
ca4b156b | 400 | if (mkdir(MDMON_DIR, 0700) < 0 && errno != EEXIST) { |
7f3b2d1d BK |
401 | pr_err("Can't create autorebuild.pid file\n"); |
402 | } else { | |
ca4b156b MT |
403 | int fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0700); |
404 | ||
405 | if (fd >= 0) | |
406 | fp = fdopen(fd, "w"); | |
407 | ||
7f3b2d1d | 408 | if (!fp) |
7a862a02 | 409 | pr_err("Can't create autorebuild.pid file\n"); |
7f3b2d1d BK |
410 | else { |
411 | pid = getpid(); | |
412 | fprintf(fp, "%d\n", pid); | |
413 | fclose(fp); | |
2e0172b1 N |
414 | } |
415 | } | |
2e0172b1 | 416 | } |
52826846 | 417 | |
b3015166 | 418 | static void execute_alert_cmd(const char *event, const char *dev, const char *disc) |
36988671 MG |
419 | { |
420 | int pid = fork(); | |
421 | ||
422 | switch (pid) { | |
423 | default: | |
424 | waitpid(pid, NULL, 0); | |
425 | break; | |
426 | case -1: | |
427 | pr_err("Cannot fork to execute alert command"); | |
428 | break; | |
429 | case 0: | |
b3015166 | 430 | execl(info.alert_cmd, info.alert_cmd, event, dev, disc, NULL); |
36988671 MG |
431 | exit(2); |
432 | } | |
433 | } | |
434 | ||
b3015166 | 435 | static void send_event_email(const char *event, const char *dev, const char *disc) |
36988671 MG |
436 | { |
437 | FILE *mp, *mdstat; | |
36988671 MG |
438 | char buf[BUFSIZ]; |
439 | int n; | |
440 | ||
441 | mp = popen(Sendmail, "w"); | |
442 | if (!mp) { | |
443 | pr_err("Cannot open pipe stream for sendmail.\n"); | |
444 | return; | |
445 | } | |
446 | ||
36988671 | 447 | signal(SIGPIPE, SIG_IGN); |
b3015166 MG |
448 | if (info.mailfrom) |
449 | fprintf(mp, "From: %s\n", info.mailfrom); | |
36988671 MG |
450 | else |
451 | fprintf(mp, "From: %s monitoring <root>\n", Name); | |
b3015166 MG |
452 | fprintf(mp, "To: %s\n", info.mailaddr); |
453 | fprintf(mp, "Subject: %s event on %s:%s\n\n", event, dev, info.hostname); | |
36988671 MG |
454 | fprintf(mp, "This is an automatically generated mail message. \n"); |
455 | fprintf(mp, "A %s event had been detected on md device %s.\n\n", event, dev); | |
456 | ||
457 | if (disc && disc[0] != ' ') | |
458 | fprintf(mp, | |
459 | "It could be related to component device %s.\n\n", disc); | |
460 | if (disc && disc[0] == ' ') | |
461 | fprintf(mp, "Extra information:%s.\n\n", disc); | |
462 | ||
463 | mdstat = fopen("/proc/mdstat", "r"); | |
464 | if (!mdstat) { | |
465 | pr_err("Cannot open /proc/mdstat\n"); | |
466 | pclose(mp); | |
467 | return; | |
468 | } | |
469 | ||
470 | fprintf(mp, "The /proc/mdstat file currently contains the following:\n\n"); | |
471 | while ((n = fread(buf, 1, sizeof(buf), mdstat)) > 0) | |
472 | n = fwrite(buf, 1, n, mp); | |
473 | fclose(mdstat); | |
474 | pclose(mp); | |
475 | } | |
476 | ||
477 | static void log_event_to_syslog(const char *event, const char *dev, const char *disc) | |
52826846 | 478 | { |
773135f5 | 479 | int priority; |
36988671 MG |
480 | /* Log at a different severity depending on the event. |
481 | * | |
482 | * These are the critical events: */ | |
483 | if (strncmp(event, "Fail", 4) == 0 || | |
484 | strncmp(event, "Degrade", 7) == 0 || | |
485 | strncmp(event, "DeviceDisappeared", 17) == 0) | |
486 | priority = LOG_CRIT; | |
487 | /* Good to know about, but are not failures: */ | |
488 | else if (strncmp(event, "Rebuild", 7) == 0 || | |
489 | strncmp(event, "MoveSpare", 9) == 0 || | |
490 | strncmp(event, "Spares", 6) != 0) | |
491 | priority = LOG_WARNING; | |
492 | /* Everything else: */ | |
493 | else | |
494 | priority = LOG_INFO; | |
495 | ||
496 | if (disc && disc[0] != ' ') | |
497 | syslog(priority, | |
498 | "%s event detected on md device %s, component device %s", event, dev, disc); | |
499 | else if (disc) | |
500 | syslog(priority, "%s event detected on md device %s: %s", event, dev, disc); | |
501 | else | |
502 | syslog(priority, "%s event detected on md device %s", event, dev); | |
503 | } | |
773135f5 | 504 | |
b3015166 | 505 | static void alert(const char *event, const char *dev, const char *disc) |
36988671 | 506 | { |
b3015166 | 507 | if (!info.alert_cmd && !info.mailaddr && !info.dosyslog) { |
cd29a5c8 | 508 | time_t now = time(0); |
aba69144 | 509 | |
f566ef45 JS |
510 | printf("%1.15s: %s on %s %s\n", ctime(&now) + 4, |
511 | event, dev, disc?disc:"unknown device"); | |
cd29a5c8 | 512 | } |
b3015166 MG |
513 | if (info.alert_cmd) |
514 | execute_alert_cmd(event, dev, disc); | |
36988671 | 515 | |
b3015166 | 516 | if (info.mailaddr && (strncmp(event, "Fail", 4) == 0 || |
f566ef45 JS |
517 | strncmp(event, "Test", 4) == 0 || |
518 | strncmp(event, "Spares", 6) == 0 || | |
519 | strncmp(event, "Degrade", 7) == 0)) { | |
b3015166 | 520 | send_event_email(event, dev, disc); |
52826846 | 521 | } |
773135f5 | 522 | |
b3015166 | 523 | if (info.dosyslog) |
36988671 | 524 | log_event_to_syslog(event, dev, disc); |
52826846 | 525 | } |
b90c0e9a | 526 | |
a90e1050 | 527 | static int check_array(struct state *st, struct mdstat_ent *mdstat, |
c2ecf5f6 | 528 | int increments, char *prefer) |
2e0172b1 | 529 | { |
ff044d6b AC |
530 | /* Update the state 'st' to reflect any changes shown in mdstat, |
531 | * or found by directly examining the array, and return | |
532 | * '1' if the array is degraded, or '0' if it is optimal (or dead). | |
533 | */ | |
b3015166 | 534 | struct { int state, major, minor; } disks_info[MAX_DISKS]; |
aed5f5c3 | 535 | struct mdinfo *sra = NULL; |
2e0172b1 N |
536 | mdu_array_info_t array; |
537 | struct mdstat_ent *mse = NULL, *mse2; | |
538 | char *dev = st->devname; | |
b9a0309c | 539 | int fd; |
2e0172b1 | 540 | int i; |
9e6d9291 N |
541 | int remaining_disks; |
542 | int last_disk; | |
721b662b | 543 | int new_array = 0; |
1830e74b | 544 | int retval; |
802961a2 | 545 | int is_container = 0; |
b3ab4e4d | 546 | unsigned long redundancy_only_flags = 0; |
2e0172b1 | 547 | |
b3015166 MG |
548 | if (info.test) |
549 | alert("TestMessage", dev, NULL); | |
b9a0309c | 550 | |
1830e74b JS |
551 | retval = 0; |
552 | ||
2e0172b1 | 553 | fd = open(dev, O_RDONLY); |
13e5d845 JS |
554 | if (fd < 0) |
555 | goto disappeared; | |
b9a0309c | 556 | |
802961a2 | 557 | if (st->devnm[0] == 0) |
84d969be | 558 | snprintf(st->devnm, MD_NAME_MAX, "%s", fd2devnm(fd)); |
802961a2 MT |
559 | |
560 | for (mse2 = mdstat; mse2; mse2 = mse2->next) | |
561 | if (strcmp(mse2->devnm, st->devnm) == 0) { | |
562 | mse2->devnm[0] = 0; /* flag it as "used" */ | |
563 | mse = mse2; | |
564 | } | |
565 | ||
566 | if (!mse) { | |
567 | /* duplicated array in statelist | |
568 | * or re-created after reading mdstat | |
569 | */ | |
570 | st->err++; | |
571 | goto out; | |
572 | } | |
573 | ||
574 | if (mse->level == NULL) | |
575 | is_container = 1; | |
576 | ||
2dab69c9 | 577 | if (!is_container && !md_array_active(fd)) |
13e5d845 | 578 | goto disappeared; |
b9a0309c | 579 | |
2e0172b1 | 580 | fcntl(fd, F_SETFD, FD_CLOEXEC); |
13e5d845 JS |
581 | if (md_get_array_info(fd, &array) < 0) |
582 | goto disappeared; | |
583 | ||
b3ab4e4d MT |
584 | if (!is_container && map_name(pers, mse->level) > 0) |
585 | redundancy_only_flags |= GET_MISMATCH; | |
802961a2 MT |
586 | |
587 | sra = sysfs_read(-1, st->devnm, GET_LEVEL | GET_DISKS | GET_DEVS | | |
b3ab4e4d | 588 | GET_STATE | redundancy_only_flags); |
aed5f5c3 | 589 | |
aed5f5c3 JS |
590 | if (!sra) |
591 | goto disappeared; | |
592 | ||
2e0172b1 N |
593 | /* It's much easier to list what array levels can't |
594 | * have a device disappear than all of them that can | |
595 | */ | |
48bc2ade | 596 | if (sra->array.level == 0 || sra->array.level == -1) { |
f1661bd7 | 597 | if (!st->err && !st->from_config) |
b3015166 | 598 | alert("DeviceDisappeared", dev, " Wrong-Level"); |
73ff0732 | 599 | st->err++; |
1830e74b | 600 | goto out; |
2e0172b1 | 601 | } |
2e0172b1 | 602 | |
2e0172b1 N |
603 | /* this array is in /proc/mdstat */ |
604 | if (array.utime == 0) | |
605 | /* external arrays don't update utime, so | |
606 | * just make sure it is always different. */ | |
607 | array.utime = st->utime + 1;; | |
608 | ||
0f760384 | 609 | if (st->err) { |
73ff0732 | 610 | /* New array appeared where previously had an error */ |
0f760384 N |
611 | st->err = 0; |
612 | st->percent = RESYNC_NONE; | |
721b662b | 613 | new_array = 1; |
007087d0 | 614 | if (!is_container) |
b3015166 | 615 | alert("NewArray", st->devname, NULL); |
0f760384 N |
616 | } |
617 | ||
b8e5713c | 618 | if (st->utime == array.utime && st->failed == sra->array.failed_disks && |
e5eb6857 | 619 | st->working == sra->array.working_disks && |
b98943a4 | 620 | st->spare == sra->array.spare_disks && |
d7be7d87 | 621 | (mse == NULL || (mse->percent == st->percent))) { |
ff044d6b | 622 | if ((st->active < st->raid) && st->spare == 0) |
1830e74b JS |
623 | retval = 1; |
624 | goto out; | |
2e0172b1 N |
625 | } |
626 | if (st->utime == 0 && /* new array */ | |
f27904a5 | 627 | mse->pattern && strchr(mse->pattern, '_') /* degraded */) |
b3015166 | 628 | alert("DegradedArray", dev, NULL); |
2e0172b1 | 629 | |
b98943a4 JS |
630 | if (st->utime == 0 && /* new array */ st->expected_spares > 0 && |
631 | sra->array.spare_disks < st->expected_spares) | |
b3015166 | 632 | alert("SparesMissing", dev, NULL); |
9dad51d4 | 633 | if (st->percent < 0 && st->percent != RESYNC_UNKNOWN && |
2e0172b1 | 634 | mse->percent >= 0) |
b3015166 | 635 | alert("RebuildStarted", dev, NULL); |
f27904a5 | 636 | if (st->percent >= 0 && mse->percent >= 0 && |
2e0172b1 | 637 | (mse->percent / increments) > (st->percent / increments)) { |
97589839 | 638 | char percentalert[18]; |
f27904a5 JS |
639 | /* |
640 | * "RebuildNN" (10 chars) or "RebuildStarted" (15 chars) | |
641 | */ | |
2e0172b1 N |
642 | |
643 | if((mse->percent / increments) == 0) | |
f27904a5 JS |
644 | snprintf(percentalert, sizeof(percentalert), |
645 | "RebuildStarted"); | |
2e0172b1 | 646 | else |
f27904a5 JS |
647 | snprintf(percentalert, sizeof(percentalert), |
648 | "Rebuild%02d", mse->percent); | |
2e0172b1 | 649 | |
b3015166 | 650 | alert(percentalert, dev, NULL); |
2e0172b1 N |
651 | } |
652 | ||
f27904a5 | 653 | if (mse->percent == RESYNC_NONE && st->percent >= 0) { |
2e0172b1 N |
654 | /* Rebuild/sync/whatever just finished. |
655 | * If there is a number in /mismatch_cnt, | |
656 | * we should report that. | |
657 | */ | |
2e0172b1 | 658 | if (sra && sra->mismatch_cnt > 0) { |
8453f8d0 LD |
659 | char cnt[80]; |
660 | snprintf(cnt, sizeof(cnt), | |
661 | " mismatches found: %d (on raid level %d)", | |
f566ef45 | 662 | sra->mismatch_cnt, sra->array.level); |
b3015166 | 663 | alert("RebuildFinished", dev, cnt); |
2e0172b1 | 664 | } else |
b3015166 | 665 | alert("RebuildFinished", dev, NULL); |
2e0172b1 N |
666 | } |
667 | st->percent = mse->percent; | |
668 | ||
b98943a4 | 669 | remaining_disks = sra->array.nr_disks; |
f27904a5 | 670 | for (i = 0; i < MAX_DISKS && remaining_disks > 0; i++) { |
2e0172b1 N |
671 | mdu_disk_info_t disc; |
672 | disc.number = i; | |
d97572f5 | 673 | if (md_get_disk_info(fd, &disc) >= 0) { |
b3015166 MG |
674 | disks_info[i].state = disc.state; |
675 | disks_info[i].major = disc.major; | |
676 | disks_info[i].minor = disc.minor; | |
9e6d9291 N |
677 | if (disc.major || disc.minor) |
678 | remaining_disks --; | |
2e0172b1 | 679 | } else |
b3015166 | 680 | disks_info[i].major = disks_info[i].minor = 0; |
2e0172b1 | 681 | } |
9e6d9291 | 682 | last_disk = i; |
2e0172b1 | 683 | |
4019ad07 JL |
684 | if (mse->metadata_version && |
685 | strncmp(mse->metadata_version, "external:", 9) == 0 && | |
4dd2df09 N |
686 | is_subarray(mse->metadata_version+9)) { |
687 | char *sl; | |
84d969be | 688 | snprintf(st->parent_devnm, MD_NAME_MAX, "%s", mse->metadata_version + 10); |
4dd2df09 N |
689 | sl = strchr(st->parent_devnm, '/'); |
690 | if (sl) | |
691 | *sl = 0; | |
692 | } else | |
693 | st->parent_devnm[0] = 0; | |
f27904a5 | 694 | if (st->metadata == NULL && st->parent_devnm[0] == 0) |
2e0172b1 N |
695 | st->metadata = super_by_fd(fd, NULL); |
696 | ||
f566ef45 JS |
697 | for (i = 0; i < MAX_DISKS; i++) { |
698 | mdu_disk_info_t disc = {0, 0, 0, 0, 0}; | |
699 | int newstate = 0; | |
2e0172b1 N |
700 | int change; |
701 | char *dv = NULL; | |
702 | disc.number = i; | |
b3015166 MG |
703 | if (i < last_disk && (disks_info[i].major || disks_info[i].minor)) { |
704 | newstate = disks_info[i].state; | |
705 | dv = map_dev_preferred(disks_info[i].major, disks_info[i].minor, 1, | |
f27904a5 | 706 | prefer); |
2e0172b1 | 707 | disc.state = newstate; |
b3015166 MG |
708 | disc.major = disks_info[i].major; |
709 | disc.minor = disks_info[i].minor; | |
721b662b N |
710 | } else |
711 | newstate = (1 << MD_DISK_REMOVED); | |
712 | ||
2e0172b1 | 713 | if (dv == NULL && st->devid[i]) |
f27904a5 JS |
714 | dv = map_dev_preferred(major(st->devid[i]), |
715 | minor(st->devid[i]), 1, prefer); | |
2e0172b1 | 716 | change = newstate ^ st->devstate[i]; |
721b662b | 717 | if (st->utime && change && !st->err && !new_array) { |
f27904a5 | 718 | if ((st->devstate[i]&change) & (1 << MD_DISK_SYNC)) |
b3015166 | 719 | alert("Fail", dev, dv); |
f27904a5 | 720 | else if ((newstate & (1 << MD_DISK_FAULTY)) && |
2e0172b1 | 721 | (disc.major || disc.minor) && |
f27904a5 JS |
722 | st->devid[i] == makedev(disc.major, |
723 | disc.minor)) | |
b3015166 | 724 | alert("FailSpare", dev, dv); |
f27904a5 | 725 | else if ((newstate&change) & (1 << MD_DISK_SYNC)) |
b3015166 | 726 | alert("SpareActive", dev, dv); |
2e0172b1 N |
727 | } |
728 | st->devstate[i] = newstate; | |
729 | st->devid[i] = makedev(disc.major, disc.minor); | |
730 | } | |
b98943a4 | 731 | st->active = sra->array.active_disks; |
e5eb6857 | 732 | st->working = sra->array.working_disks; |
b98943a4 | 733 | st->spare = sra->array.spare_disks; |
b8e5713c | 734 | st->failed = sra->array.failed_disks; |
2e0172b1 | 735 | st->utime = array.utime; |
12a9d21f | 736 | st->raid = sra->array.raid_disks; |
2e0172b1 | 737 | st->err = 0; |
a90e1050 | 738 | if ((st->active < st->raid) && st->spare == 0) |
1830e74b JS |
739 | retval = 1; |
740 | ||
741 | out: | |
aed5f5c3 JS |
742 | if (sra) |
743 | sysfs_free(sra); | |
802961a2 | 744 | if (fd >= 0) |
13e5d845 | 745 | close(fd); |
1830e74b | 746 | return retval; |
13e5d845 JS |
747 | |
748 | disappeared: | |
007087d0 | 749 | if (!st->err && !is_container) |
b3015166 | 750 | alert("DeviceDisappeared", dev, NULL); |
13e5d845 JS |
751 | st->err++; |
752 | goto out; | |
2e0172b1 N |
753 | } |
754 | ||
b3015166 | 755 | static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist) |
2e0172b1 N |
756 | { |
757 | struct mdstat_ent *mse; | |
758 | int new_found = 0; | |
1e08717f | 759 | char *name; |
2e0172b1 | 760 | |
f566ef45 | 761 | for (mse = mdstat; mse; mse = mse->next) |
d7be7d87 | 762 | if (mse->devnm[0] && (!mse->level || /* retrieve containers */ |
f566ef45 JS |
763 | (strcmp(mse->level, "raid0") != 0 && |
764 | strcmp(mse->level, "linear") != 0))) { | |
503975b9 | 765 | struct state *st = xcalloc(1, sizeof *st); |
2e0172b1 N |
766 | mdu_array_info_t array; |
767 | int fd; | |
1e08717f SV |
768 | |
769 | name = get_md_name(mse->devnm); | |
770 | if (!name) { | |
771 | free(st); | |
772 | continue; | |
773 | } | |
774 | ||
84d969be | 775 | snprintf(st->devname, MD_NAME_MAX + sizeof("/dev/md/"), "%s", name); |
2e0172b1 | 776 | if ((fd = open(st->devname, O_RDONLY)) < 0 || |
9cd39f01 | 777 | md_get_array_info(fd, &array) < 0) { |
2e0172b1 | 778 | /* no such array */ |
9cd39f01 JS |
779 | if (fd >= 0) |
780 | close(fd); | |
2e0172b1 | 781 | put_md_name(st->devname); |
2e0172b1 N |
782 | if (st->metadata) { |
783 | st->metadata->ss->free_super(st->metadata); | |
784 | free(st->metadata); | |
785 | } | |
786 | free(st); | |
787 | continue; | |
788 | } | |
789 | close(fd); | |
83f3bc5f | 790 | st->next = *statelist; |
2e0172b1 | 791 | st->err = 1; |
73ff0732 | 792 | st->from_auto = 1; |
84d969be | 793 | snprintf(st->devnm, MD_NAME_MAX, "%s", mse->devnm); |
9dad51d4 | 794 | st->percent = RESYNC_UNKNOWN; |
2e0172b1 | 795 | st->expected_spares = -1; |
eb28e119 | 796 | if (mse->metadata_version && |
f566ef45 JS |
797 | strncmp(mse->metadata_version, |
798 | "external:", 9) == 0 && | |
4dd2df09 N |
799 | is_subarray(mse->metadata_version+9)) { |
800 | char *sl; | |
84d969be KT |
801 | snprintf(st->parent_devnm, MD_NAME_MAX, |
802 | "%s", mse->metadata_version + 10); | |
4dd2df09 N |
803 | sl = strchr(st->parent_devnm, '/'); |
804 | *sl = 0; | |
805 | } else | |
806 | st->parent_devnm[0] = 0; | |
83f3bc5f | 807 | *statelist = st; |
b3015166 MG |
808 | if (info.test) |
809 | alert("TestMessage", st->devname, NULL); | |
2e0172b1 N |
810 | new_found = 1; |
811 | } | |
812 | return new_found; | |
813 | } | |
814 | ||
fbfdcb06 AO |
815 | static int get_required_spare_criteria(struct state *st, |
816 | struct spare_criteria *sc) | |
80e7f8c3 AC |
817 | { |
818 | int fd; | |
80e7f8c3 | 819 | |
f566ef45 | 820 | if (!st->metadata || !st->metadata->ss->get_spare_criteria) { |
fbfdcb06 | 821 | sc->min_size = 0; |
4b57ecf6 | 822 | sc->sector_size = 0; |
de697acc | 823 | return 0; |
300f5033 | 824 | } |
80e7f8c3 AC |
825 | |
826 | fd = open(st->devname, O_RDONLY); | |
827 | if (fd < 0) | |
de697acc AC |
828 | return 1; |
829 | if (st->metadata->ss->external) | |
830 | st->metadata->ss->load_container(st->metadata, fd, st->devname); | |
831 | else | |
832 | st->metadata->ss->load_super(st->metadata, fd, st->devname); | |
80e7f8c3 | 833 | close(fd); |
de697acc AC |
834 | if (!st->metadata->sb) |
835 | return 1; | |
fbfdcb06 AO |
836 | |
837 | st->metadata->ss->get_spare_criteria(st->metadata, sc); | |
80e7f8c3 AC |
838 | st->metadata->ss->free_super(st->metadata); |
839 | ||
de697acc | 840 | return 0; |
80e7f8c3 AC |
841 | } |
842 | ||
5ec0f373 | 843 | static int check_donor(struct state *from, struct state *to) |
2feb22ef | 844 | { |
66f5c4b6 N |
845 | struct state *sub; |
846 | ||
2feb22ef N |
847 | if (from == to) |
848 | return 0; | |
66f5c4b6 N |
849 | if (from->parent) |
850 | /* Cannot move from a member */ | |
2feb22ef | 851 | return 0; |
ff044d6b AC |
852 | if (from->err) |
853 | return 0; | |
66f5c4b6 N |
854 | for (sub = from->subarray; sub; sub = sub->subarray) |
855 | /* If source array has degraded subarrays, don't | |
856 | * remove anything | |
857 | */ | |
858 | if (sub->active < sub->raid) | |
859 | return 0; | |
860 | if (from->metadata->ss->external == 0) | |
861 | if (from->active < from->raid) | |
862 | return 0; | |
2feb22ef N |
863 | if (from->spare <= 0) |
864 | return 0; | |
e78dda3b | 865 | return 1; |
2feb22ef N |
866 | } |
867 | ||
0f0749ad | 868 | static dev_t choose_spare(struct state *from, struct state *to, |
f566ef45 | 869 | struct domainlist *domlist, struct spare_criteria *sc) |
0fa21e85 N |
870 | { |
871 | int d; | |
0f0749ad | 872 | dev_t dev = 0; |
0fa21e85 | 873 | |
b0599bda | 874 | for (d = from->raid; !dev && d < MAX_DISKS; d++) { |
f566ef45 | 875 | if (from->devid[d] > 0 && from->devstate[d] == 0) { |
0fa21e85 N |
876 | struct dev_policy *pol; |
877 | unsigned long long dev_size; | |
4b57ecf6 | 878 | unsigned int dev_sector_size; |
0fa21e85 | 879 | |
bfd76b93 CA |
880 | if (to->metadata->ss->external && |
881 | test_partition_from_id(from->devid[d])) | |
882 | continue; | |
883 | ||
fbfdcb06 | 884 | if (sc->min_size && |
0fa21e85 | 885 | dev_size_from_id(from->devid[d], &dev_size) && |
fbfdcb06 | 886 | dev_size < sc->min_size) |
0fa21e85 N |
887 | continue; |
888 | ||
4b57ecf6 AO |
889 | if (sc->sector_size && |
890 | dev_sector_size_from_id(from->devid[d], | |
891 | &dev_sector_size) && | |
892 | sc->sector_size != dev_sector_size) | |
893 | continue; | |
894 | ||
4dd2df09 | 895 | pol = devid_policy(from->devid[d]); |
0fa21e85 N |
896 | if (from->spare_group) |
897 | pol_add(&pol, pol_domain, | |
898 | from->spare_group, NULL); | |
f566ef45 JS |
899 | if (domain_test(domlist, pol, |
900 | to->metadata->ss->name) == 1) | |
0fa21e85 N |
901 | dev = from->devid[d]; |
902 | dev_policy_free(pol); | |
903 | } | |
904 | } | |
905 | return dev; | |
906 | } | |
907 | ||
0f0749ad | 908 | static dev_t container_choose_spare(struct state *from, struct state *to, |
f0b85306 | 909 | struct domainlist *domlist, |
fbfdcb06 | 910 | struct spare_criteria *sc, int active) |
5739e0d0 N |
911 | { |
912 | /* This is similar to choose_spare, but we cannot trust devstate, | |
913 | * so we need to read the metadata instead | |
914 | */ | |
326727d9 | 915 | struct mdinfo *list; |
5739e0d0 | 916 | struct supertype *st = from->metadata; |
ff044d6b | 917 | int fd = open(from->devname, O_RDONLY); |
5739e0d0 | 918 | int err; |
0f0749ad | 919 | dev_t dev = 0; |
5739e0d0 N |
920 | |
921 | if (fd < 0) | |
922 | return 0; | |
326727d9 AC |
923 | if (!st->ss->getinfo_super_disks) { |
924 | close(fd); | |
5739e0d0 | 925 | return 0; |
326727d9 | 926 | } |
1011e834 | 927 | |
5739e0d0 N |
928 | err = st->ss->load_container(st, fd, NULL); |
929 | close(fd); | |
930 | if (err) | |
931 | return 0; | |
1011e834 | 932 | |
a1e49d69 CA |
933 | if (from == to) { |
934 | /* We must check if number of active disks has not increased | |
935 | * since ioctl in main loop. mdmon may have added spare | |
936 | * to subarray. If so we do not need to look for more spares | |
937 | * so return non zero value */ | |
938 | int active_cnt = 0; | |
939 | struct mdinfo *dp; | |
940 | list = st->ss->getinfo_super_disks(st); | |
941 | if (!list) { | |
942 | st->ss->free_super(st); | |
943 | return 1; | |
944 | } | |
945 | dp = list->devs; | |
946 | while (dp) { | |
f566ef45 JS |
947 | if (dp->disk.state & (1 << MD_DISK_SYNC) && |
948 | !(dp->disk.state & (1 << MD_DISK_FAULTY))) | |
a1e49d69 CA |
949 | active_cnt++; |
950 | dp = dp->next; | |
951 | } | |
952 | sysfs_free(list); | |
953 | if (active < active_cnt) { | |
954 | /* Spare just activated.*/ | |
955 | st->ss->free_super(st); | |
956 | return 1; | |
957 | } | |
958 | } | |
959 | ||
326727d9 | 960 | /* We only need one spare so full list not needed */ |
fbfdcb06 | 961 | list = container_choose_spares(st, sc, domlist, from->spare_group, |
326727d9 AC |
962 | to->metadata->ss->name, 1); |
963 | if (list) { | |
964 | struct mdinfo *disks = list->devs; | |
965 | if (disks) | |
966 | dev = makedev(disks->disk.major, disks->disk.minor); | |
967 | sysfs_free(list); | |
5739e0d0 | 968 | } |
326727d9 | 969 | st->ss->free_super(st); |
5739e0d0 N |
970 | return dev; |
971 | } | |
972 | ||
b3015166 | 973 | static void try_spare_migration(struct state *statelist) |
2e0172b1 | 974 | { |
66f5c4b6 N |
975 | struct state *from; |
976 | struct state *st; | |
fbfdcb06 | 977 | struct spare_criteria sc; |
c3621c0a ML |
978 | |
979 | link_containers_with_subarrays(statelist); | |
66f5c4b6 | 980 | for (st = statelist; st; st = st->next) |
f566ef45 | 981 | if (st->active < st->raid && st->spare == 0 && !st->err) { |
e78dda3b N |
982 | struct domainlist *domlist = NULL; |
983 | int d; | |
66f5c4b6 N |
984 | struct state *to = st; |
985 | ||
4dd2df09 | 986 | if (to->parent_devnm[0] && !to->parent) |
c0dc0ad5 CA |
987 | /* subarray monitored without parent container |
988 | * we can't move spares here */ | |
989 | continue; | |
1011e834 | 990 | |
66f5c4b6 N |
991 | if (to->parent) |
992 | /* member of a container */ | |
993 | to = to->parent; | |
e78dda3b | 994 | |
fbfdcb06 | 995 | if (get_required_spare_criteria(to, &sc)) |
de697acc | 996 | continue; |
e9a2ac02 AC |
997 | if (to->metadata->ss->external) { |
998 | /* We must make sure there is | |
999 | * no suitable spare in container already. | |
1000 | * If there is we don't add more */ | |
1001 | dev_t devid = container_choose_spare( | |
fbfdcb06 | 1002 | to, to, NULL, &sc, st->active); |
e9a2ac02 AC |
1003 | if (devid > 0) |
1004 | continue; | |
1005 | } | |
b0599bda | 1006 | for (d = 0; d < MAX_DISKS; d++) |
e78dda3b N |
1007 | if (to->devid[d]) |
1008 | domainlist_add_dev(&domlist, | |
1009 | to->devid[d], | |
1010 | to->metadata->ss->name); | |
1011 | if (to->spare_group) | |
1012 | domain_add(&domlist, to->spare_group); | |
5ec0f373 ML |
1013 | /* |
1014 | * No spare migration if the destination | |
1015 | * has no domain. Skip this array. | |
1016 | */ | |
1017 | if (!domlist) | |
1018 | continue; | |
0fa21e85 | 1019 | for (from=statelist ; from ; from=from->next) { |
0f0749ad | 1020 | dev_t devid; |
5ec0f373 | 1021 | if (!check_donor(from, to)) |
0fa21e85 | 1022 | continue; |
5739e0d0 N |
1023 | if (from->metadata->ss->external) |
1024 | devid = container_choose_spare( | |
fbfdcb06 | 1025 | from, to, domlist, &sc, 0); |
5739e0d0 | 1026 | else |
f0b85306 | 1027 | devid = choose_spare(from, to, domlist, |
fbfdcb06 | 1028 | &sc); |
f566ef45 JS |
1029 | if (devid > 0 && |
1030 | move_spare(from->devname, to->devname, | |
1031 | devid)) { | |
b3015166 | 1032 | alert("MoveSpare", to->devname, from->devname); |
d52bb542 AC |
1033 | break; |
1034 | } | |
0fa21e85 | 1035 | } |
e78dda3b | 1036 | domain_free(domlist); |
2e0172b1 N |
1037 | } |
1038 | } | |
c3621c0a ML |
1039 | |
1040 | /* search the statelist to connect external | |
1041 | * metadata subarrays with their containers | |
1042 | * We always completely rebuild the tree from scratch as | |
1043 | * that is safest considering the possibility of entries | |
1044 | * disappearing or changing. | |
1045 | */ | |
1046 | static void link_containers_with_subarrays(struct state *list) | |
1047 | { | |
1048 | struct state *st; | |
1049 | struct state *cont; | |
1050 | for (st = list; st; st = st->next) { | |
1051 | st->parent = NULL; | |
1052 | st->subarray = NULL; | |
1053 | } | |
1054 | for (st = list; st; st = st->next) | |
4dd2df09 | 1055 | if (st->parent_devnm[0]) |
c3621c0a | 1056 | for (cont = list; cont; cont = cont->next) |
f566ef45 | 1057 | if (!cont->err && cont->parent_devnm[0] == 0 && |
4dd2df09 | 1058 | strcmp(cont->devnm, st->parent_devnm) == 0) { |
c3621c0a ML |
1059 | st->parent = cont; |
1060 | st->subarray = cont->subarray; | |
1061 | cont->subarray = st; | |
1062 | break; | |
1063 | } | |
1064 | } | |
1065 | ||
55c10e4d PB |
1066 | /** |
1067 | * free_statelist() - Frees statelist. | |
1068 | * @statelist: statelist to free | |
1069 | */ | |
1070 | static void free_statelist(struct state *statelist) | |
1071 | { | |
1072 | struct state *tmp = NULL; | |
1073 | ||
1074 | while (statelist) { | |
1075 | if (statelist->spare_group) | |
1076 | free(statelist->spare_group); | |
1077 | ||
1078 | tmp = statelist; | |
1079 | statelist = statelist->next; | |
1080 | free(tmp); | |
1081 | } | |
1082 | } | |
1083 | ||
af3396da | 1084 | #ifndef NO_LIBUDEV |
49b69533 OS |
1085 | /* function: check_udev_activity |
1086 | * Description: Function waits for udev to finish | |
1087 | * events processing. | |
1088 | * Returns: | |
1089 | * 1 - detected error while opening udev | |
1090 | * 2 - timeout | |
1091 | * 0 - successfull completion | |
1092 | */ | |
1093 | static int check_udev_activity(void) | |
1094 | { | |
1095 | struct udev *udev = NULL; | |
1096 | struct udev_queue *udev_queue = NULL; | |
1097 | int timeout_cnt = 30; | |
1098 | int rc = 0; | |
1099 | ||
1100 | /* | |
1101 | * In rare cases systemd may not have udevm, | |
1102 | * in such cases just exit with rc 0 | |
1103 | */ | |
1104 | if (!use_udev()) | |
1105 | goto out; | |
1106 | ||
1107 | udev = udev_new(); | |
1108 | if (!udev) { | |
1109 | rc = 1; | |
1110 | goto out; | |
1111 | } | |
1112 | ||
1113 | udev_queue = udev_queue_new(udev); | |
1114 | if (!udev_queue) { | |
1115 | rc = 1; | |
1116 | goto out; | |
1117 | } | |
1118 | ||
1119 | if (udev_queue_get_queue_is_empty(udev_queue)) | |
1120 | goto out; | |
1121 | ||
1122 | while (!udev_queue_get_queue_is_empty(udev_queue)) { | |
1123 | sleep(1); | |
1124 | ||
1125 | if (timeout_cnt) | |
1126 | timeout_cnt--; | |
1127 | else { | |
1128 | rc = 2; | |
1129 | goto out; | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | out: | |
1134 | if (udev_queue) | |
1135 | udev_queue_unref(udev_queue); | |
1136 | if (udev) | |
1137 | udev_unref(udev); | |
1138 | return rc; | |
1139 | } | |
af3396da | 1140 | #endif |
49b69533 | 1141 | |
b90c0e9a NB |
1142 | /* Not really Monitor but ... */ |
1143 | int Wait(char *dev) | |
1144 | { | |
4dd2df09 | 1145 | char devnm[32]; |
cb91230c TM |
1146 | dev_t rdev; |
1147 | char *tmp; | |
b90c0e9a | 1148 | int rv = 1; |
d3f6cf4f | 1149 | int frozen_remaining = 3; |
b90c0e9a | 1150 | |
cb91230c | 1151 | if (!stat_is_blkdev(dev, &rdev)) |
b90c0e9a | 1152 | return 2; |
cb91230c TM |
1153 | |
1154 | tmp = devid2devnm(rdev); | |
1155 | if (!tmp) { | |
1156 | pr_err("Cannot get md device name.\n"); | |
1157 | return 2; | |
1158 | } | |
1159 | ||
1160 | strcpy(devnm, tmp); | |
b90c0e9a NB |
1161 | |
1162 | while(1) { | |
1163 | struct mdstat_ent *ms = mdstat_read(1, 0); | |
1164 | struct mdstat_ent *e; | |
1165 | ||
f566ef45 | 1166 | for (e = ms; e; e = e->next) |
4dd2df09 | 1167 | if (strcmp(e->devnm, devnm) == 0) |
b90c0e9a NB |
1168 | break; |
1169 | ||
d3f6cf4f | 1170 | if (e && e->percent == RESYNC_NONE) { |
276be514 N |
1171 | /* We could be in the brief pause before something |
1172 | * starts. /proc/mdstat doesn't show that, but | |
1173 | * sync_action does. | |
1174 | */ | |
1175 | struct mdinfo mdi; | |
1176 | char buf[21]; | |
dae13137 JS |
1177 | |
1178 | if (sysfs_init(&mdi, -1, devnm)) | |
1179 | return 2; | |
276be514 N |
1180 | if (sysfs_get_str(&mdi, NULL, "sync_action", |
1181 | buf, 20) > 0 && | |
d3f6cf4f | 1182 | strcmp(buf,"idle\n") != 0) { |
276be514 | 1183 | e->percent = RESYNC_UNKNOWN; |
d3f6cf4f N |
1184 | if (strcmp(buf, "frozen\n") == 0) { |
1185 | if (frozen_remaining == 0) | |
1186 | e->percent = RESYNC_NONE; | |
1187 | else | |
1188 | frozen_remaining -= 1; | |
1189 | } | |
1190 | } | |
276be514 | 1191 | } |
639c3c10 | 1192 | if (!e || e->percent == RESYNC_NONE) { |
e7783ee6 | 1193 | if (e && e->metadata_version && |
c94709e8 DW |
1194 | strncmp(e->metadata_version, "external:", 9) == 0) { |
1195 | if (is_subarray(&e->metadata_version[9])) | |
1196 | ping_monitor(&e->metadata_version[9]); | |
1197 | else | |
4dd2df09 | 1198 | ping_monitor(devnm); |
c94709e8 | 1199 | } |
b90c0e9a NB |
1200 | free_mdstat(ms); |
1201 | return rv; | |
1202 | } | |
89a10d84 | 1203 | free_mdstat(ms); |
b90c0e9a NB |
1204 | rv = 0; |
1205 | mdstat_wait(5); | |
1206 | } | |
1207 | } | |
679eb882 | 1208 | |
43ebc910 GP |
1209 | /* The state "broken" is used only for RAID0/LINEAR - it's the same as |
1210 | * "clean", but used in case the array has one or more members missing. | |
1211 | */ | |
679eb882 | 1212 | static char *clean_states[] = { |
43ebc910 | 1213 | "clear", "inactive", "readonly", "read-auto", "clean", "broken", NULL }; |
679eb882 | 1214 | |
1ea04629 | 1215 | int WaitClean(char *dev, int verbose) |
679eb882 N |
1216 | { |
1217 | int fd; | |
1218 | struct mdinfo *mdi; | |
1219 | int rv = 1; | |
4dd2df09 | 1220 | char devnm[32]; |
679eb882 | 1221 | |
9e04ac1c ZL |
1222 | if (!stat_is_blkdev(dev, NULL)) |
1223 | return 2; | |
679eb882 N |
1224 | fd = open(dev, O_RDONLY); |
1225 | if (fd < 0) { | |
1226 | if (verbose) | |
e7b84f9d | 1227 | pr_err("Couldn't open %s: %s\n", dev, strerror(errno)); |
679eb882 N |
1228 | return 1; |
1229 | } | |
1230 | ||
4dd2df09 N |
1231 | strcpy(devnm, fd2devnm(fd)); |
1232 | mdi = sysfs_read(fd, devnm, GET_VERSION|GET_LEVEL|GET_SAFEMODE); | |
679eb882 N |
1233 | if (!mdi) { |
1234 | if (verbose) | |
7a862a02 | 1235 | pr_err("Failed to read sysfs attributes for %s\n", dev); |
679eb882 N |
1236 | close(fd); |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | switch(mdi->array.level) { | |
1241 | case LEVEL_LINEAR: | |
1242 | case LEVEL_MULTIPATH: | |
1243 | case 0: | |
1244 | /* safemode delay is irrelevant for these levels */ | |
1245 | rv = 0; | |
1246 | } | |
1247 | ||
1248 | /* for internal metadata the kernel handles the final clean | |
1249 | * transition, containers can never be dirty | |
1250 | */ | |
1251 | if (!is_subarray(mdi->text_version)) | |
1252 | rv = 0; | |
1253 | ||
1254 | /* safemode disabled ? */ | |
1255 | if (mdi->safe_mode_delay == 0) | |
1256 | rv = 0; | |
1257 | ||
1258 | if (rv) { | |
4dd2df09 | 1259 | int state_fd = sysfs_open(fd2devnm(fd), NULL, "array_state"); |
679eb882 | 1260 | char buf[20]; |
efc67e8e | 1261 | int delay = 5000; |
679eb882 N |
1262 | |
1263 | /* minimize the safe_mode_delay and prepare to wait up to 5s | |
1264 | * for writes to quiesce | |
1265 | */ | |
1266 | sysfs_set_safemode(mdi, 1); | |
679eb882 N |
1267 | |
1268 | /* wait for array_state to be clean */ | |
1269 | while (1) { | |
1270 | rv = read(state_fd, buf, sizeof(buf)); | |
1271 | if (rv < 0) | |
1272 | break; | |
43ebc910 GP |
1273 | if (sysfs_match_word(buf, clean_states) < |
1274 | (int)ARRAY_SIZE(clean_states) - 1) | |
679eb882 | 1275 | break; |
efc67e8e | 1276 | rv = sysfs_wait(state_fd, &delay); |
679eb882 N |
1277 | if (rv < 0 && errno != EINTR) |
1278 | break; | |
1279 | lseek(state_fd, 0, SEEK_SET); | |
1280 | } | |
1281 | if (rv < 0) | |
1282 | rv = 1; | |
1ea04629 | 1283 | else if (ping_monitor(mdi->text_version) == 0) { |
679eb882 N |
1284 | /* we need to ping to close the window between array |
1285 | * state transitioning to clean and the metadata being | |
1286 | * marked clean | |
1287 | */ | |
1288 | rv = 0; | |
1ea04629 | 1289 | } else { |
679eb882 | 1290 | rv = 1; |
1ea04629 MT |
1291 | pr_err("Error connecting monitor with %s\n", dev); |
1292 | } | |
679eb882 | 1293 | if (rv && verbose) |
f566ef45 | 1294 | pr_err("Error waiting for %s to be clean\n", dev); |
679eb882 N |
1295 | |
1296 | /* restore the original safe_mode_delay */ | |
1297 | sysfs_set_safemode(mdi, mdi->safe_mode_delay); | |
1298 | close(state_fd); | |
1299 | } | |
1300 | ||
1301 | sysfs_free(mdi); | |
1302 | close(fd); | |
1303 | ||
1304 | return rv; | |
1305 | } |