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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 | |
2e0172b1 N |
33 | struct state { |
34 | char *devname; | |
4dd2df09 | 35 | char devnm[32]; /* to sync with mdstat info */ |
2e0172b1 N |
36 | long utime; |
37 | int err; | |
38 | char *spare_group; | |
39 | int active, working, failed, spare, raid; | |
f1661bd7 | 40 | int from_config; |
2e0172b1 | 41 | int expected_spares; |
b0599bda N |
42 | int devstate[MAX_DISKS]; |
43 | dev_t devid[MAX_DISKS]; | |
2e0172b1 | 44 | int percent; |
4dd2df09 N |
45 | char parent_devnm[32]; /* For subarray, devnm of parent. |
46 | * For others, "" | |
47 | */ | |
2e0172b1 | 48 | struct supertype *metadata; |
c3621c0a ML |
49 | struct state *subarray;/* for a container it is a link to first subarray |
50 | * for a subarray it is a link to next subarray | |
51 | * in the same container */ | |
52 | struct state *parent; /* for a subarray it is a link to its container | |
53 | */ | |
2e0172b1 N |
54 | struct state *next; |
55 | }; | |
56 | ||
e0bd6a96 N |
57 | struct alert_info { |
58 | char *mailaddr; | |
59 | char *mailfrom; | |
60 | char *alert_cmd; | |
61 | int dosyslog; | |
62 | }; | |
2e0172b1 N |
63 | static int make_daemon(char *pidfile); |
64 | static int check_one_sharer(int scan); | |
e0bd6a96 | 65 | static void alert(char *event, char *dev, char *disc, struct alert_info *info); |
a90e1050 | 66 | static int check_array(struct state *st, struct mdstat_ent *mdstat, |
e0bd6a96 | 67 | int test, struct alert_info *info, |
c2ecf5f6 | 68 | int increments, char *prefer); |
83f3bc5f | 69 | static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist, |
e0bd6a96 N |
70 | int test, struct alert_info *info); |
71 | static void try_spare_migration(struct state *statelist, struct alert_info *info); | |
c3621c0a | 72 | static void link_containers_with_subarrays(struct state *list); |
2e0172b1 | 73 | |
a655e550 | 74 | int Monitor(struct mddev_dev *devlist, |
52826846 | 75 | char *mailaddr, char *alert_cmd, |
95c50205 N |
76 | struct context *c, |
77 | int daemonise, int oneshot, | |
78 | int dosyslog, char *pidfile, int increments, | |
79 | int share) | |
52826846 NB |
80 | { |
81 | /* | |
82 | * Every few seconds, scan every md device looking for changes | |
83 | * When a change is found, log it, possibly run the alert command, | |
84 | * and possibly send Email | |
85 | * | |
86 | * For each array, we record: | |
87 | * Update time | |
88 | * active/working/failed/spare drives | |
89 | * State of each device. | |
e0d19036 | 90 | * %rebuilt if rebuilding |
52826846 NB |
91 | * |
92 | * If the update time changes, check out all the data again | |
93 | * It is possible that we cannot get the state of each device | |
94 | * due to bugs in the md kernel module. | |
e0d19036 NB |
95 | * We also read /proc/mdstat to get rebuild percent, |
96 | * and to get state on all active devices incase of kernel bug. | |
52826846 | 97 | * |
e0d19036 NB |
98 | * Events are: |
99 | * Fail | |
100 | * An active device had Faulty set or Active/Sync removed | |
101 | * FailSpare | |
102 | * A spare device had Faulty set | |
103 | * SpareActive | |
104 | * An active device had a reverse transition | |
105 | * RebuildStarted | |
106 | * percent went from -1 to +ve | |
9a36a9b7 ZB |
107 | * RebuildNN |
108 | * percent went from below to not-below NN% | |
e0d19036 NB |
109 | * DeviceDisappeared |
110 | * Couldn't access a device which was previously visible | |
52826846 NB |
111 | * |
112 | * if we detect an array with active<raid and spare==0 | |
113 | * we look at other arrays that have same spare-group | |
114 | * If we find one with active==raid and spare>0, | |
115 | * and if we can get_disk_info and find a name | |
116 | * Then we hot-remove and hot-add to the other array | |
117 | * | |
e0d19036 NB |
118 | * If devlist is NULL, then we can monitor everything because --scan |
119 | * was given. We get an initial list from config file and add anything | |
120 | * that appears in /proc/mdstat | |
52826846 NB |
121 | */ |
122 | ||
2e0172b1 | 123 | struct state *statelist = NULL; |
b657208c | 124 | struct state *st2; |
52826846 | 125 | int finished = 0; |
e0d19036 | 126 | struct mdstat_ent *mdstat = NULL; |
4948b8f7 | 127 | char *mailfrom = NULL; |
e0bd6a96 | 128 | struct alert_info info; |
e0d19036 | 129 | |
d013a55e | 130 | if (!mailaddr) { |
8aec876d | 131 | mailaddr = conf_get_mailaddr(); |
95c50205 | 132 | if (mailaddr && ! c->scan) |
e7b84f9d | 133 | pr_err("Monitor using email address \"%s\" from config file\n", |
d013a55e NB |
134 | mailaddr); |
135 | } | |
8aec876d | 136 | mailfrom = conf_get_mailfrom(); |
4948b8f7 | 137 | |
d013a55e | 138 | if (!alert_cmd) { |
8aec876d | 139 | alert_cmd = conf_get_program(); |
95c50205 | 140 | if (alert_cmd && ! c->scan) |
e7b84f9d | 141 | pr_err("Monitor using program \"%s\" from config file\n", |
d013a55e NB |
142 | alert_cmd); |
143 | } | |
95c50205 | 144 | if (c->scan && !mailaddr && !alert_cmd && !dosyslog) { |
e7b84f9d | 145 | pr_err("No mail address or alert command - not monitoring.\n"); |
d013a55e | 146 | return 1; |
56eedc1a | 147 | } |
e0bd6a96 N |
148 | info.alert_cmd = alert_cmd; |
149 | info.mailaddr = mailaddr; | |
150 | info.mailfrom = mailfrom; | |
151 | info.dosyslog = dosyslog; | |
d013a55e | 152 | |
44d337f0 AC |
153 | if (daemonise) { |
154 | int rv = make_daemon(pidfile); | |
155 | if (rv >= 0) | |
156 | return rv; | |
157 | } | |
e0d19036 | 158 | |
2e0172b1 | 159 | if (share) |
95c50205 | 160 | if (check_one_sharer(c->scan)) |
2e0172b1 | 161 | return 1; |
edde9560 | 162 | |
e0d19036 | 163 | if (devlist == NULL) { |
fa56eddb | 164 | struct mddev_ident *mdlist = conf_get_ident(NULL); |
e0d19036 | 165 | for (; mdlist; mdlist=mdlist->next) { |
fe056d1f N |
166 | struct state *st; |
167 | if (mdlist->devname == NULL) | |
168 | continue; | |
112cace6 N |
169 | if (strcasecmp(mdlist->devname, "<ignore>") == 0) |
170 | continue; | |
503975b9 | 171 | st = xcalloc(1, sizeof *st); |
db2d001c | 172 | if (mdlist->devname[0] == '/') |
503975b9 | 173 | st->devname = xstrdup(mdlist->devname); |
db2d001c | 174 | else { |
503975b9 | 175 | st->devname = xmalloc(8+strlen(mdlist->devname)+1); |
db2d001c N |
176 | strcpy(strcpy(st->devname, "/dev/md/"), |
177 | mdlist->devname); | |
178 | } | |
e0d19036 | 179 | st->next = statelist; |
4dd2df09 | 180 | st->devnm[0] = 0; |
9dad51d4 | 181 | st->percent = RESYNC_UNKNOWN; |
f1661bd7 | 182 | st->from_config = 1; |
feb716e9 | 183 | st->expected_spares = mdlist->spare_disks; |
e0d19036 | 184 | if (mdlist->spare_group) |
503975b9 | 185 | st->spare_group = xstrdup(mdlist->spare_group); |
e0d19036 NB |
186 | statelist = st; |
187 | } | |
188 | } else { | |
a655e550 | 189 | struct mddev_dev *dv; |
e0d19036 | 190 | for (dv=devlist ; dv; dv=dv->next) { |
fa56eddb | 191 | struct mddev_ident *mdlist = conf_get_ident(dv->devname); |
503975b9 N |
192 | struct state *st = xcalloc(1, sizeof *st); |
193 | st->devname = xstrdup(dv->devname); | |
e0d19036 | 194 | st->next = statelist; |
4dd2df09 | 195 | st->devnm[0] = 0; |
9dad51d4 | 196 | st->percent = RESYNC_UNKNOWN; |
feb716e9 | 197 | st->expected_spares = -1; |
e5329c37 NB |
198 | if (mdlist) { |
199 | st->expected_spares = mdlist->spare_disks; | |
200 | if (mdlist->spare_group) | |
503975b9 | 201 | st->spare_group = xstrdup(mdlist->spare_group); |
e5329c37 | 202 | } |
e0d19036 NB |
203 | statelist = st; |
204 | } | |
205 | } | |
206 | ||
207 | ||
208 | while (! finished) { | |
aa88f531 | 209 | int new_found = 0; |
e0d19036 | 210 | struct state *st; |
a90e1050 | 211 | int anydegraded = 0; |
e0d19036 NB |
212 | |
213 | if (mdstat) | |
214 | free_mdstat(mdstat); | |
22a88995 | 215 | mdstat = mdstat_read(oneshot?0:1, 0); |
e0d19036 | 216 | |
2e0172b1 | 217 | for (st=statelist; st; st=st->next) |
95c50205 N |
218 | if (check_array(st, mdstat, c->test, &info, |
219 | increments, c->prefer)) | |
a90e1050 | 220 | anydegraded = 1; |
2e0172b1 | 221 | |
e0d19036 | 222 | /* now check if there are any new devices found in mdstat */ |
95c50205 N |
223 | if (c->scan) |
224 | new_found = add_new_arrays(mdstat, &statelist, c->test, | |
e0bd6a96 | 225 | &info); |
2e0172b1 | 226 | |
e0d19036 NB |
227 | /* If an array has active < raid && spare == 0 && spare_group != NULL |
228 | * Look for another array with spare > 0 and active == raid and same spare_group | |
229 | * if found, choose a device and hotremove/hotadd | |
230 | */ | |
a90e1050 | 231 | if (share && anydegraded) |
e0bd6a96 | 232 | try_spare_migration(statelist, &info); |
aa88f531 NB |
233 | if (!new_found) { |
234 | if (oneshot) | |
235 | break; | |
236 | else | |
95c50205 | 237 | mdstat_wait(c->delay); |
aa88f531 | 238 | } |
95c50205 | 239 | c->test = 0; |
52826846 | 240 | } |
b657208c JS |
241 | for (st2 = statelist; st2; st2 = statelist) { |
242 | statelist = st2->next; | |
243 | free(st2); | |
244 | } | |
245 | ||
b5e64645 NB |
246 | if (pidfile) |
247 | unlink(pidfile); | |
52826846 NB |
248 | return 0; |
249 | } | |
250 | ||
2e0172b1 N |
251 | static int make_daemon(char *pidfile) |
252 | { | |
44d337f0 AC |
253 | /* Return: |
254 | * -1 in the forked daemon | |
255 | * 0 in the parent | |
256 | * 1 on error | |
257 | * so a none-negative becomes the exit code. | |
258 | */ | |
2e0172b1 N |
259 | int pid = fork(); |
260 | if (pid > 0) { | |
261 | if (!pidfile) | |
262 | printf("%d\n", pid); | |
263 | else { | |
264 | FILE *pid_file; | |
265 | pid_file=fopen(pidfile, "w"); | |
266 | if (!pid_file) | |
267 | perror("cannot create pid file"); | |
268 | else { | |
269 | fprintf(pid_file,"%d\n", pid); | |
270 | fclose(pid_file); | |
271 | } | |
272 | } | |
273 | return 0; | |
274 | } | |
275 | if (pid < 0) { | |
276 | perror("daemonise"); | |
277 | return 1; | |
278 | } | |
279 | close(0); | |
280 | open("/dev/null", O_RDWR); | |
281 | dup2(0,1); | |
282 | dup2(0,2); | |
283 | setsid(); | |
44d337f0 | 284 | return -1; |
2e0172b1 N |
285 | } |
286 | ||
287 | static int check_one_sharer(int scan) | |
288 | { | |
289 | int pid, rv; | |
290 | FILE *fp; | |
291 | char dir[20]; | |
0011874f | 292 | char path[100]; |
2e0172b1 | 293 | struct stat buf; |
0011874f JS |
294 | sprintf(path, "%s/autorebuild.pid", MDMON_DIR); |
295 | fp = fopen(path, "r"); | |
2e0172b1 | 296 | if (fp) { |
71204a50 N |
297 | if (fscanf(fp, "%d", &pid) != 1) |
298 | pid = -1; | |
2e0172b1 N |
299 | sprintf(dir, "/proc/%d", pid); |
300 | rv = stat(dir, &buf); | |
301 | if (rv != -1) { | |
302 | if (scan) { | |
e7b84f9d | 303 | pr_err("Only one " |
2e0172b1 N |
304 | "autorebuild process allowed" |
305 | " in scan mode, aborting\n"); | |
306 | fclose(fp); | |
307 | return 1; | |
308 | } else { | |
e7b84f9d | 309 | pr_err("Warning: One" |
2e0172b1 | 310 | " autorebuild process already" |
a1bb2065 | 311 | " running.\n"); |
2e0172b1 N |
312 | } |
313 | } | |
314 | fclose(fp); | |
315 | } | |
316 | if (scan) { | |
0011874f | 317 | if (mkdir(MDMON_DIR, S_IRWXU) < 0 && |
a1bb2065 | 318 | errno != EEXIST) { |
e7b84f9d | 319 | pr_err("Can't create " |
a1bb2065 AC |
320 | "autorebuild.pid file\n"); |
321 | } else { | |
0011874f | 322 | fp = fopen(path, "w"); |
a1bb2065 | 323 | if (!fp) |
e7b84f9d | 324 | pr_err("Cannot create" |
a1bb2065 AC |
325 | " autorebuild.pid" |
326 | "file\n"); | |
327 | else { | |
328 | pid = getpid(); | |
329 | fprintf(fp, "%d\n", pid); | |
330 | fclose(fp); | |
331 | } | |
2e0172b1 N |
332 | } |
333 | } | |
334 | return 0; | |
335 | } | |
52826846 | 336 | |
e0bd6a96 | 337 | static void alert(char *event, char *dev, char *disc, struct alert_info *info) |
52826846 | 338 | { |
773135f5 NB |
339 | int priority; |
340 | ||
b1bac75b | 341 | if (!info->alert_cmd && !info->mailaddr && !info->dosyslog) { |
cd29a5c8 | 342 | time_t now = time(0); |
aba69144 | 343 | |
e0d19036 | 344 | printf("%1.15s: %s on %s %s\n", ctime(&now)+4, event, dev, disc?disc:"unknown device"); |
cd29a5c8 | 345 | } |
e0bd6a96 | 346 | if (info->alert_cmd) { |
52826846 NB |
347 | int pid = fork(); |
348 | switch(pid) { | |
349 | default: | |
350 | waitpid(pid, NULL, 0); | |
351 | break; | |
352 | case -1: | |
353 | break; | |
354 | case 0: | |
e0bd6a96 N |
355 | execl(info->alert_cmd, info->alert_cmd, |
356 | event, dev, disc, NULL); | |
52826846 NB |
357 | exit(2); |
358 | } | |
359 | } | |
e0bd6a96 | 360 | if (info->mailaddr && |
aba69144 | 361 | (strncmp(event, "Fail", 4)==0 || |
98c6faba | 362 | strncmp(event, "Test", 4)==0 || |
d1732eeb | 363 | strncmp(event, "Spares", 6)==0 || |
aa88f531 | 364 | strncmp(event, "Degrade", 7)==0)) { |
52826846 NB |
365 | FILE *mp = popen(Sendmail, "w"); |
366 | if (mp) { | |
008e1100 | 367 | FILE *mdstat; |
52826846 NB |
368 | char hname[256]; |
369 | gethostname(hname, sizeof(hname)); | |
370 | signal(SIGPIPE, SIG_IGN); | |
e0bd6a96 N |
371 | if (info->mailfrom) |
372 | fprintf(mp, "From: %s\n", info->mailfrom); | |
4948b8f7 NB |
373 | else |
374 | fprintf(mp, "From: " Name " monitoring <root>\n"); | |
e0bd6a96 N |
375 | fprintf(mp, "To: %s\n", info->mailaddr); |
376 | fprintf(mp, "Subject: %s event on %s:%s\n\n", | |
377 | event, dev, hname); | |
52826846 | 378 | |
e0bd6a96 N |
379 | fprintf(mp, |
380 | "This is an automatically generated" | |
381 | " mail message from " Name "\n"); | |
52826846 NB |
382 | fprintf(mp, "running on %s\n\n", hname); |
383 | ||
e0bd6a96 N |
384 | fprintf(mp, |
385 | "A %s event had been detected on" | |
386 | " md device %s.\n\n", event, dev); | |
52826846 | 387 | |
37dfc3d6 | 388 | if (disc && disc[0] != ' ') |
e0bd6a96 N |
389 | fprintf(mp, |
390 | "It could be related to" | |
391 | " component device %s.\n\n", disc); | |
37dfc3d6 NB |
392 | if (disc && disc[0] == ' ') |
393 | fprintf(mp, "Extra information:%s.\n\n", disc); | |
52826846 NB |
394 | |
395 | fprintf(mp, "Faithfully yours, etc.\n"); | |
008e1100 NB |
396 | |
397 | mdstat = fopen("/proc/mdstat", "r"); | |
398 | if (mdstat) { | |
399 | char buf[8192]; | |
400 | int n; | |
e0bd6a96 N |
401 | fprintf(mp, |
402 | "\nP.S. The /proc/mdstat file" | |
403 | " currently contains the following:\n\n"); | |
008e1100 | 404 | while ( (n=fread(buf, 1, sizeof(buf), mdstat)) > 0) |
e0bd6a96 | 405 | n=fwrite(buf, 1, n, mp); |
008e1100 NB |
406 | fclose(mdstat); |
407 | } | |
6278fb3a | 408 | pclose(mp); |
52826846 | 409 | } |
52826846 | 410 | } |
773135f5 NB |
411 | |
412 | /* log the event to syslog maybe */ | |
e0bd6a96 | 413 | if (info->dosyslog) { |
773135f5 NB |
414 | /* Log at a different severity depending on the event. |
415 | * | |
416 | * These are the critical events: */ | |
417 | if (strncmp(event, "Fail", 4)==0 || | |
418 | strncmp(event, "Degrade", 7)==0 || | |
419 | strncmp(event, "DeviceDisappeared", 17)==0) | |
420 | priority = LOG_CRIT; | |
421 | /* Good to know about, but are not failures: */ | |
422 | else if (strncmp(event, "Rebuild", 7)==0 || | |
d1732eeb NB |
423 | strncmp(event, "MoveSpare", 9)==0 || |
424 | strncmp(event, "Spares", 6) != 0) | |
773135f5 NB |
425 | priority = LOG_WARNING; |
426 | /* Everything else: */ | |
427 | else | |
428 | priority = LOG_INFO; | |
429 | ||
430 | if (disc) | |
e0bd6a96 N |
431 | syslog(priority, |
432 | "%s event detected on md device %s," | |
433 | " component device %s", event, dev, disc); | |
773135f5 | 434 | else |
e0bd6a96 N |
435 | syslog(priority, |
436 | "%s event detected on md device %s", | |
437 | event, dev); | |
773135f5 | 438 | } |
52826846 | 439 | } |
b90c0e9a | 440 | |
a90e1050 | 441 | static int check_array(struct state *st, struct mdstat_ent *mdstat, |
e0bd6a96 | 442 | int test, struct alert_info *ainfo, |
c2ecf5f6 | 443 | int increments, char *prefer) |
2e0172b1 | 444 | { |
ff044d6b AC |
445 | /* Update the state 'st' to reflect any changes shown in mdstat, |
446 | * or found by directly examining the array, and return | |
447 | * '1' if the array is degraded, or '0' if it is optimal (or dead). | |
448 | */ | |
b0599bda | 449 | struct { int state, major, minor; } info[MAX_DISKS]; |
2e0172b1 N |
450 | mdu_array_info_t array; |
451 | struct mdstat_ent *mse = NULL, *mse2; | |
452 | char *dev = st->devname; | |
453 | int fd; | |
454 | int i; | |
9e6d9291 N |
455 | int remaining_disks; |
456 | int last_disk; | |
721b662b | 457 | int new_array = 0; |
2e0172b1 N |
458 | |
459 | if (test) | |
e0bd6a96 | 460 | alert("TestMessage", dev, NULL, ainfo); |
2e0172b1 N |
461 | fd = open(dev, O_RDONLY); |
462 | if (fd < 0) { | |
463 | if (!st->err) | |
e0bd6a96 N |
464 | alert("DeviceDisappeared", dev, NULL, ainfo); |
465 | st->err=1; | |
a90e1050 | 466 | return 0; |
2e0172b1 N |
467 | } |
468 | fcntl(fd, F_SETFD, FD_CLOEXEC); | |
469 | if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { | |
470 | if (!st->err) | |
e0bd6a96 N |
471 | alert("DeviceDisappeared", dev, NULL, ainfo); |
472 | st->err=1; | |
2e0172b1 | 473 | close(fd); |
a90e1050 | 474 | return 0; |
2e0172b1 N |
475 | } |
476 | /* It's much easier to list what array levels can't | |
477 | * have a device disappear than all of them that can | |
478 | */ | |
479 | if (array.level == 0 || array.level == -1) { | |
f1661bd7 | 480 | if (!st->err && !st->from_config) |
e0bd6a96 | 481 | alert("DeviceDisappeared", dev, "Wrong-Level", ainfo); |
2e0172b1 N |
482 | st->err = 1; |
483 | close(fd); | |
a90e1050 | 484 | return 0; |
2e0172b1 | 485 | } |
4dd2df09 N |
486 | if (st->devnm[0] == 0) |
487 | strcpy(st->devnm, fd2devnm(fd)); | |
2e0172b1 N |
488 | |
489 | for (mse2 = mdstat ; mse2 ; mse2=mse2->next) | |
4dd2df09 N |
490 | if (strcmp(mse2->devnm, st->devnm) == 0) { |
491 | mse2->devnm[0] = 0; /* flag it as "used" */ | |
2e0172b1 N |
492 | mse = mse2; |
493 | } | |
494 | ||
495 | if (!mse) { | |
496 | /* duplicated array in statelist | |
497 | * or re-created after reading mdstat*/ | |
498 | st->err = 1; | |
499 | close(fd); | |
a90e1050 | 500 | return 0; |
2e0172b1 N |
501 | } |
502 | /* this array is in /proc/mdstat */ | |
503 | if (array.utime == 0) | |
504 | /* external arrays don't update utime, so | |
505 | * just make sure it is always different. */ | |
506 | array.utime = st->utime + 1;; | |
507 | ||
0f760384 N |
508 | if (st->err) { |
509 | /* New array appeared where previously had and error */ | |
510 | st->err = 0; | |
511 | st->percent = RESYNC_NONE; | |
721b662b | 512 | new_array = 1; |
0f760384 N |
513 | alert("NewArray", st->devname, NULL, ainfo); |
514 | } | |
515 | ||
2e0172b1 N |
516 | if (st->utime == array.utime && |
517 | st->failed == array.failed_disks && | |
518 | st->working == array.working_disks && | |
519 | st->spare == array.spare_disks && | |
520 | (mse == NULL || ( | |
521 | mse->percent == st->percent | |
522 | ))) { | |
523 | close(fd); | |
ff044d6b AC |
524 | if ((st->active < st->raid) && st->spare == 0) |
525 | return 1; | |
526 | else | |
527 | return 0; | |
2e0172b1 N |
528 | } |
529 | if (st->utime == 0 && /* new array */ | |
530 | mse->pattern && strchr(mse->pattern, '_') /* degraded */ | |
531 | ) | |
e0bd6a96 | 532 | alert("DegradedArray", dev, NULL, ainfo); |
2e0172b1 N |
533 | |
534 | if (st->utime == 0 && /* new array */ | |
535 | st->expected_spares > 0 && | |
536 | array.spare_disks < st->expected_spares) | |
e0bd6a96 | 537 | alert("SparesMissing", dev, NULL, ainfo); |
9dad51d4 | 538 | if (st->percent < 0 && st->percent != RESYNC_UNKNOWN && |
2e0172b1 | 539 | mse->percent >= 0) |
e0bd6a96 | 540 | alert("RebuildStarted", dev, NULL, ainfo); |
2e0172b1 N |
541 | if (st->percent >= 0 && |
542 | mse->percent >= 0 && | |
543 | (mse->percent / increments) > (st->percent / increments)) { | |
544 | char percentalert[15]; // "RebuildNN" (10 chars) or "RebuildStarted" (15 chars) | |
545 | ||
546 | if((mse->percent / increments) == 0) | |
547 | snprintf(percentalert, sizeof(percentalert), "RebuildStarted"); | |
548 | else | |
549 | snprintf(percentalert, sizeof(percentalert), "Rebuild%02d", mse->percent); | |
550 | ||
e0bd6a96 | 551 | alert(percentalert, dev, NULL, ainfo); |
2e0172b1 N |
552 | } |
553 | ||
9dad51d4 | 554 | if (mse->percent == RESYNC_NONE && |
2e0172b1 N |
555 | st->percent >= 0) { |
556 | /* Rebuild/sync/whatever just finished. | |
557 | * If there is a number in /mismatch_cnt, | |
558 | * we should report that. | |
559 | */ | |
560 | struct mdinfo *sra = | |
4dd2df09 | 561 | sysfs_read(-1, st->devnm, GET_MISMATCH); |
2e0172b1 | 562 | if (sra && sra->mismatch_cnt > 0) { |
8453f8d0 LD |
563 | char cnt[80]; |
564 | snprintf(cnt, sizeof(cnt), | |
565 | " mismatches found: %d (on raid level %d)", | |
d97a5e60 | 566 | sra->mismatch_cnt, array.level); |
e0bd6a96 | 567 | alert("RebuildFinished", dev, cnt, ainfo); |
2e0172b1 | 568 | } else |
e0bd6a96 | 569 | alert("RebuildFinished", dev, NULL, ainfo); |
2e0172b1 N |
570 | if (sra) |
571 | free(sra); | |
572 | } | |
573 | st->percent = mse->percent; | |
574 | ||
9e6d9291 | 575 | remaining_disks = array.nr_disks; |
b0599bda | 576 | for (i=0; i<MAX_DISKS && remaining_disks > 0; |
2e0172b1 N |
577 | i++) { |
578 | mdu_disk_info_t disc; | |
579 | disc.number = i; | |
580 | if (ioctl(fd, GET_DISK_INFO, &disc) >= 0) { | |
581 | info[i].state = disc.state; | |
582 | info[i].major = disc.major; | |
583 | info[i].minor = disc.minor; | |
9e6d9291 N |
584 | if (disc.major || disc.minor) |
585 | remaining_disks --; | |
2e0172b1 N |
586 | } else |
587 | info[i].major = info[i].minor = 0; | |
588 | } | |
9e6d9291 | 589 | last_disk = i; |
2e0172b1 | 590 | |
4019ad07 JL |
591 | if (mse->metadata_version && |
592 | strncmp(mse->metadata_version, "external:", 9) == 0 && | |
4dd2df09 N |
593 | is_subarray(mse->metadata_version+9)) { |
594 | char *sl; | |
595 | strcpy(st->parent_devnm, | |
596 | mse->metadata_version+10); | |
597 | sl = strchr(st->parent_devnm, '/'); | |
598 | if (sl) | |
599 | *sl = 0; | |
600 | } else | |
601 | st->parent_devnm[0] = 0; | |
2e0172b1 | 602 | if (st->metadata == NULL && |
4dd2df09 | 603 | st->parent_devnm[0] == 0) |
2e0172b1 N |
604 | st->metadata = super_by_fd(fd, NULL); |
605 | ||
606 | close(fd); | |
607 | ||
b0599bda | 608 | for (i=0; i<MAX_DISKS; i++) { |
2e0172b1 N |
609 | mdu_disk_info_t disc = {0,0,0,0,0}; |
610 | int newstate=0; | |
611 | int change; | |
612 | char *dv = NULL; | |
613 | disc.number = i; | |
721b662b N |
614 | if (i < last_disk && |
615 | (info[i].major || info[i].minor)) { | |
2e0172b1 | 616 | newstate = info[i].state; |
c2ecf5f6 N |
617 | dv = map_dev_preferred( |
618 | info[i].major, info[i].minor, 1, | |
619 | prefer); | |
2e0172b1 N |
620 | disc.state = newstate; |
621 | disc.major = info[i].major; | |
622 | disc.minor = info[i].minor; | |
721b662b N |
623 | } else |
624 | newstate = (1 << MD_DISK_REMOVED); | |
625 | ||
2e0172b1 | 626 | if (dv == NULL && st->devid[i]) |
c2ecf5f6 N |
627 | dv = map_dev_preferred( |
628 | major(st->devid[i]), | |
629 | minor(st->devid[i]), 1, prefer); | |
2e0172b1 | 630 | change = newstate ^ st->devstate[i]; |
721b662b N |
631 | if (st->utime && change && !st->err && !new_array) { |
632 | if ((st->devstate[i]&change)&(1<<MD_DISK_SYNC)) | |
e0bd6a96 | 633 | alert("Fail", dev, dv, ainfo); |
721b662b | 634 | else if ((newstate & (1<<MD_DISK_FAULTY)) && |
2e0172b1 | 635 | (disc.major || disc.minor) && |
721b662b | 636 | st->devid[i] == makedev(disc.major, disc.minor)) |
e0bd6a96 | 637 | alert("FailSpare", dev, dv, ainfo); |
721b662b | 638 | else if ((newstate&change)&(1<<MD_DISK_SYNC)) |
e0bd6a96 | 639 | alert("SpareActive", dev, dv, ainfo); |
2e0172b1 N |
640 | } |
641 | st->devstate[i] = newstate; | |
642 | st->devid[i] = makedev(disc.major, disc.minor); | |
643 | } | |
644 | st->active = array.active_disks; | |
645 | st->working = array.working_disks; | |
646 | st->spare = array.spare_disks; | |
647 | st->failed = array.failed_disks; | |
648 | st->utime = array.utime; | |
649 | st->raid = array.raid_disks; | |
650 | st->err = 0; | |
a90e1050 N |
651 | if ((st->active < st->raid) && st->spare == 0) |
652 | return 1; | |
653 | return 0; | |
2e0172b1 N |
654 | } |
655 | ||
83f3bc5f | 656 | static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist, |
e0bd6a96 | 657 | int test, struct alert_info *info) |
2e0172b1 N |
658 | { |
659 | struct mdstat_ent *mse; | |
660 | int new_found = 0; | |
661 | ||
662 | for (mse=mdstat; mse; mse=mse->next) | |
4dd2df09 | 663 | if (mse->devnm[0] && |
2e0172b1 N |
664 | (!mse->level || /* retrieve containers */ |
665 | (strcmp(mse->level, "raid0") != 0 && | |
666 | strcmp(mse->level, "linear") != 0)) | |
667 | ) { | |
503975b9 | 668 | struct state *st = xcalloc(1, sizeof *st); |
2e0172b1 N |
669 | mdu_array_info_t array; |
670 | int fd; | |
4dd2df09 | 671 | st->devname = xstrdup(get_md_name(mse->devnm)); |
2e0172b1 N |
672 | if ((fd = open(st->devname, O_RDONLY)) < 0 || |
673 | ioctl(fd, GET_ARRAY_INFO, &array)< 0) { | |
674 | /* no such array */ | |
675 | if (fd >=0) close(fd); | |
676 | put_md_name(st->devname); | |
677 | free(st->devname); | |
678 | if (st->metadata) { | |
679 | st->metadata->ss->free_super(st->metadata); | |
680 | free(st->metadata); | |
681 | } | |
682 | free(st); | |
683 | continue; | |
684 | } | |
685 | close(fd); | |
83f3bc5f | 686 | st->next = *statelist; |
2e0172b1 | 687 | st->err = 1; |
4dd2df09 | 688 | strcpy(st->devnm, mse->devnm); |
9dad51d4 | 689 | st->percent = RESYNC_UNKNOWN; |
2e0172b1 | 690 | st->expected_spares = -1; |
eb28e119 N |
691 | if (mse->metadata_version && |
692 | strncmp(mse->metadata_version, "external:", 9) == 0 && | |
4dd2df09 N |
693 | is_subarray(mse->metadata_version+9)) { |
694 | char *sl; | |
695 | strcpy(st->parent_devnm, | |
696 | mse->metadata_version+10); | |
697 | sl = strchr(st->parent_devnm, '/'); | |
698 | *sl = 0; | |
699 | } else | |
700 | st->parent_devnm[0] = 0; | |
83f3bc5f | 701 | *statelist = st; |
2e0172b1 | 702 | if (test) |
e0bd6a96 | 703 | alert("TestMessage", st->devname, NULL, info); |
2e0172b1 N |
704 | new_found = 1; |
705 | } | |
706 | return new_found; | |
707 | } | |
708 | ||
de697acc | 709 | static int get_min_spare_size_required(struct state *st, unsigned long long *sizep) |
80e7f8c3 AC |
710 | { |
711 | int fd; | |
80e7f8c3 AC |
712 | |
713 | if (!st->metadata || | |
300f5033 CA |
714 | !st->metadata->ss->min_acceptable_spare_size) { |
715 | *sizep = 0; | |
de697acc | 716 | return 0; |
300f5033 | 717 | } |
80e7f8c3 AC |
718 | |
719 | fd = open(st->devname, O_RDONLY); | |
720 | if (fd < 0) | |
de697acc AC |
721 | return 1; |
722 | if (st->metadata->ss->external) | |
723 | st->metadata->ss->load_container(st->metadata, fd, st->devname); | |
724 | else | |
725 | st->metadata->ss->load_super(st->metadata, fd, st->devname); | |
80e7f8c3 | 726 | close(fd); |
de697acc AC |
727 | if (!st->metadata->sb) |
728 | return 1; | |
729 | *sizep = st->metadata->ss->min_acceptable_spare_size(st->metadata); | |
80e7f8c3 AC |
730 | st->metadata->ss->free_super(st->metadata); |
731 | ||
de697acc | 732 | return 0; |
80e7f8c3 AC |
733 | } |
734 | ||
5ec0f373 | 735 | static int check_donor(struct state *from, struct state *to) |
2feb22ef | 736 | { |
66f5c4b6 N |
737 | struct state *sub; |
738 | ||
2feb22ef N |
739 | if (from == to) |
740 | return 0; | |
66f5c4b6 N |
741 | if (from->parent) |
742 | /* Cannot move from a member */ | |
2feb22ef | 743 | return 0; |
ff044d6b AC |
744 | if (from->err) |
745 | return 0; | |
66f5c4b6 N |
746 | for (sub = from->subarray; sub; sub = sub->subarray) |
747 | /* If source array has degraded subarrays, don't | |
748 | * remove anything | |
749 | */ | |
750 | if (sub->active < sub->raid) | |
751 | return 0; | |
752 | if (from->metadata->ss->external == 0) | |
753 | if (from->active < from->raid) | |
754 | return 0; | |
2feb22ef N |
755 | if (from->spare <= 0) |
756 | return 0; | |
e78dda3b | 757 | return 1; |
2feb22ef N |
758 | } |
759 | ||
0f0749ad | 760 | static dev_t choose_spare(struct state *from, struct state *to, |
f0b85306 | 761 | struct domainlist *domlist, unsigned long long min_size) |
0fa21e85 N |
762 | { |
763 | int d; | |
0f0749ad | 764 | dev_t dev = 0; |
0fa21e85 | 765 | |
b0599bda | 766 | for (d = from->raid; !dev && d < MAX_DISKS; d++) { |
0fa21e85 N |
767 | if (from->devid[d] > 0 && |
768 | from->devstate[d] == 0) { | |
769 | struct dev_policy *pol; | |
770 | unsigned long long dev_size; | |
771 | ||
bfd76b93 CA |
772 | if (to->metadata->ss->external && |
773 | test_partition_from_id(from->devid[d])) | |
774 | continue; | |
775 | ||
0fa21e85 N |
776 | if (min_size && |
777 | dev_size_from_id(from->devid[d], &dev_size) && | |
778 | dev_size < min_size) | |
779 | continue; | |
780 | ||
4dd2df09 | 781 | pol = devid_policy(from->devid[d]); |
0fa21e85 N |
782 | if (from->spare_group) |
783 | pol_add(&pol, pol_domain, | |
784 | from->spare_group, NULL); | |
e5508b36 | 785 | if (domain_test(domlist, pol, to->metadata->ss->name) == 1) |
0fa21e85 N |
786 | dev = from->devid[d]; |
787 | dev_policy_free(pol); | |
788 | } | |
789 | } | |
790 | return dev; | |
791 | } | |
792 | ||
0f0749ad | 793 | static dev_t container_choose_spare(struct state *from, struct state *to, |
f0b85306 | 794 | struct domainlist *domlist, |
a1e49d69 | 795 | unsigned long long min_size, int active) |
5739e0d0 N |
796 | { |
797 | /* This is similar to choose_spare, but we cannot trust devstate, | |
798 | * so we need to read the metadata instead | |
799 | */ | |
326727d9 | 800 | struct mdinfo *list; |
5739e0d0 | 801 | struct supertype *st = from->metadata; |
ff044d6b | 802 | int fd = open(from->devname, O_RDONLY); |
5739e0d0 | 803 | int err; |
0f0749ad | 804 | dev_t dev = 0; |
5739e0d0 N |
805 | |
806 | if (fd < 0) | |
807 | return 0; | |
326727d9 AC |
808 | if (!st->ss->getinfo_super_disks) { |
809 | close(fd); | |
5739e0d0 | 810 | return 0; |
326727d9 | 811 | } |
5739e0d0 N |
812 | |
813 | err = st->ss->load_container(st, fd, NULL); | |
814 | close(fd); | |
815 | if (err) | |
816 | return 0; | |
5739e0d0 | 817 | |
a1e49d69 CA |
818 | if (from == to) { |
819 | /* We must check if number of active disks has not increased | |
820 | * since ioctl in main loop. mdmon may have added spare | |
821 | * to subarray. If so we do not need to look for more spares | |
822 | * so return non zero value */ | |
823 | int active_cnt = 0; | |
824 | struct mdinfo *dp; | |
825 | list = st->ss->getinfo_super_disks(st); | |
826 | if (!list) { | |
827 | st->ss->free_super(st); | |
828 | return 1; | |
829 | } | |
830 | dp = list->devs; | |
831 | while (dp) { | |
832 | if (dp->disk.state & (1<<MD_DISK_SYNC) && | |
833 | !(dp->disk.state & (1<<MD_DISK_FAULTY))) | |
834 | active_cnt++; | |
835 | dp = dp->next; | |
836 | } | |
837 | sysfs_free(list); | |
838 | if (active < active_cnt) { | |
839 | /* Spare just activated.*/ | |
840 | st->ss->free_super(st); | |
841 | return 1; | |
842 | } | |
843 | } | |
844 | ||
326727d9 AC |
845 | /* We only need one spare so full list not needed */ |
846 | list = container_choose_spares(st, min_size, domlist, from->spare_group, | |
847 | to->metadata->ss->name, 1); | |
848 | if (list) { | |
849 | struct mdinfo *disks = list->devs; | |
850 | if (disks) | |
851 | dev = makedev(disks->disk.major, disks->disk.minor); | |
852 | sysfs_free(list); | |
5739e0d0 | 853 | } |
326727d9 | 854 | st->ss->free_super(st); |
5739e0d0 N |
855 | return dev; |
856 | } | |
857 | ||
858 | ||
e0bd6a96 | 859 | static void try_spare_migration(struct state *statelist, struct alert_info *info) |
2e0172b1 | 860 | { |
66f5c4b6 N |
861 | struct state *from; |
862 | struct state *st; | |
c3621c0a ML |
863 | |
864 | link_containers_with_subarrays(statelist); | |
66f5c4b6 N |
865 | for (st = statelist; st; st = st->next) |
866 | if (st->active < st->raid && | |
ef15641f | 867 | st->spare == 0 && !st->err) { |
e78dda3b N |
868 | struct domainlist *domlist = NULL; |
869 | int d; | |
66f5c4b6 | 870 | struct state *to = st; |
f0b85306 | 871 | unsigned long long min_size; |
66f5c4b6 | 872 | |
4dd2df09 | 873 | if (to->parent_devnm[0] && !to->parent) |
c0dc0ad5 CA |
874 | /* subarray monitored without parent container |
875 | * we can't move spares here */ | |
876 | continue; | |
877 | ||
66f5c4b6 N |
878 | if (to->parent) |
879 | /* member of a container */ | |
880 | to = to->parent; | |
e78dda3b | 881 | |
de697acc AC |
882 | if (get_min_spare_size_required(to, &min_size)) |
883 | continue; | |
e9a2ac02 AC |
884 | if (to->metadata->ss->external) { |
885 | /* We must make sure there is | |
886 | * no suitable spare in container already. | |
887 | * If there is we don't add more */ | |
888 | dev_t devid = container_choose_spare( | |
a1e49d69 | 889 | to, to, NULL, min_size, st->active); |
e9a2ac02 AC |
890 | if (devid > 0) |
891 | continue; | |
892 | } | |
b0599bda | 893 | for (d = 0; d < MAX_DISKS; d++) |
e78dda3b N |
894 | if (to->devid[d]) |
895 | domainlist_add_dev(&domlist, | |
896 | to->devid[d], | |
897 | to->metadata->ss->name); | |
898 | if (to->spare_group) | |
899 | domain_add(&domlist, to->spare_group); | |
5ec0f373 ML |
900 | /* |
901 | * No spare migration if the destination | |
902 | * has no domain. Skip this array. | |
903 | */ | |
904 | if (!domlist) | |
905 | continue; | |
0fa21e85 | 906 | for (from=statelist ; from ; from=from->next) { |
0f0749ad | 907 | dev_t devid; |
5ec0f373 | 908 | if (!check_donor(from, to)) |
0fa21e85 | 909 | continue; |
5739e0d0 N |
910 | if (from->metadata->ss->external) |
911 | devid = container_choose_spare( | |
a1e49d69 | 912 | from, to, domlist, min_size, 0); |
5739e0d0 | 913 | else |
f0b85306 AC |
914 | devid = choose_spare(from, to, domlist, |
915 | min_size); | |
0fa21e85 | 916 | if (devid > 0 |
d52bb542 AC |
917 | && move_spare(from->devname, to->devname, devid)) { |
918 | alert("MoveSpare", to->devname, from->devname, info); | |
919 | break; | |
920 | } | |
0fa21e85 | 921 | } |
e78dda3b | 922 | domain_free(domlist); |
2e0172b1 N |
923 | } |
924 | } | |
c3621c0a ML |
925 | |
926 | /* search the statelist to connect external | |
927 | * metadata subarrays with their containers | |
928 | * We always completely rebuild the tree from scratch as | |
929 | * that is safest considering the possibility of entries | |
930 | * disappearing or changing. | |
931 | */ | |
932 | static void link_containers_with_subarrays(struct state *list) | |
933 | { | |
934 | struct state *st; | |
935 | struct state *cont; | |
936 | for (st = list; st; st = st->next) { | |
937 | st->parent = NULL; | |
938 | st->subarray = NULL; | |
939 | } | |
940 | for (st = list; st; st = st->next) | |
4dd2df09 | 941 | if (st->parent_devnm[0]) |
c3621c0a ML |
942 | for (cont = list; cont; cont = cont->next) |
943 | if (!cont->err && | |
4dd2df09 N |
944 | cont->parent_devnm[0] == 0 && |
945 | strcmp(cont->devnm, st->parent_devnm) == 0) { | |
c3621c0a ML |
946 | st->parent = cont; |
947 | st->subarray = cont->subarray; | |
948 | cont->subarray = st; | |
949 | break; | |
950 | } | |
951 | } | |
952 | ||
b90c0e9a NB |
953 | /* Not really Monitor but ... */ |
954 | int Wait(char *dev) | |
955 | { | |
956 | struct stat stb; | |
4dd2df09 | 957 | char devnm[32]; |
b90c0e9a NB |
958 | int rv = 1; |
959 | ||
960 | if (stat(dev, &stb) != 0) { | |
e7b84f9d | 961 | pr_err("Cannot find %s: %s\n", dev, |
b90c0e9a NB |
962 | strerror(errno)); |
963 | return 2; | |
964 | } | |
4dd2df09 | 965 | strcpy(devnm, stat2devnm(&stb)); |
b90c0e9a NB |
966 | |
967 | while(1) { | |
968 | struct mdstat_ent *ms = mdstat_read(1, 0); | |
969 | struct mdstat_ent *e; | |
970 | ||
971 | for (e=ms ; e; e=e->next) | |
4dd2df09 | 972 | if (strcmp(e->devnm, devnm) == 0) |
b90c0e9a NB |
973 | break; |
974 | ||
639c3c10 | 975 | if (!e || e->percent == RESYNC_NONE) { |
e7783ee6 | 976 | if (e && e->metadata_version && |
c94709e8 DW |
977 | strncmp(e->metadata_version, "external:", 9) == 0) { |
978 | if (is_subarray(&e->metadata_version[9])) | |
979 | ping_monitor(&e->metadata_version[9]); | |
980 | else | |
4dd2df09 | 981 | ping_monitor(devnm); |
c94709e8 | 982 | } |
b90c0e9a NB |
983 | free_mdstat(ms); |
984 | return rv; | |
985 | } | |
89a10d84 | 986 | free_mdstat(ms); |
b90c0e9a NB |
987 | rv = 0; |
988 | mdstat_wait(5); | |
989 | } | |
990 | } | |
679eb882 N |
991 | |
992 | #ifndef MDASSEMBLE | |
993 | ||
994 | static char *clean_states[] = { | |
995 | "clear", "inactive", "readonly", "read-auto", "clean", NULL }; | |
996 | ||
997 | int WaitClean(char *dev, int sock, int verbose) | |
998 | { | |
999 | int fd; | |
1000 | struct mdinfo *mdi; | |
1001 | int rv = 1; | |
4dd2df09 | 1002 | char devnm[32]; |
679eb882 N |
1003 | |
1004 | fd = open(dev, O_RDONLY); | |
1005 | if (fd < 0) { | |
1006 | if (verbose) | |
e7b84f9d | 1007 | pr_err("Couldn't open %s: %s\n", dev, strerror(errno)); |
679eb882 N |
1008 | return 1; |
1009 | } | |
1010 | ||
4dd2df09 N |
1011 | strcpy(devnm, fd2devnm(fd)); |
1012 | mdi = sysfs_read(fd, devnm, GET_VERSION|GET_LEVEL|GET_SAFEMODE); | |
679eb882 N |
1013 | if (!mdi) { |
1014 | if (verbose) | |
e7b84f9d N |
1015 | pr_err("Failed to read sysfs attributes for " |
1016 | "%s\n", dev); | |
679eb882 N |
1017 | close(fd); |
1018 | return 0; | |
1019 | } | |
1020 | ||
1021 | switch(mdi->array.level) { | |
1022 | case LEVEL_LINEAR: | |
1023 | case LEVEL_MULTIPATH: | |
1024 | case 0: | |
1025 | /* safemode delay is irrelevant for these levels */ | |
1026 | rv = 0; | |
1027 | } | |
1028 | ||
1029 | /* for internal metadata the kernel handles the final clean | |
1030 | * transition, containers can never be dirty | |
1031 | */ | |
1032 | if (!is_subarray(mdi->text_version)) | |
1033 | rv = 0; | |
1034 | ||
1035 | /* safemode disabled ? */ | |
1036 | if (mdi->safe_mode_delay == 0) | |
1037 | rv = 0; | |
1038 | ||
1039 | if (rv) { | |
4dd2df09 | 1040 | int state_fd = sysfs_open(fd2devnm(fd), NULL, "array_state"); |
679eb882 N |
1041 | char buf[20]; |
1042 | fd_set fds; | |
1043 | struct timeval tm; | |
1044 | ||
1045 | /* minimize the safe_mode_delay and prepare to wait up to 5s | |
1046 | * for writes to quiesce | |
1047 | */ | |
1048 | sysfs_set_safemode(mdi, 1); | |
1049 | tm.tv_sec = 5; | |
1050 | tm.tv_usec = 0; | |
1051 | ||
1052 | FD_ZERO(&fds); | |
1053 | ||
1054 | /* wait for array_state to be clean */ | |
1055 | while (1) { | |
1056 | rv = read(state_fd, buf, sizeof(buf)); | |
1057 | if (rv < 0) | |
1058 | break; | |
1059 | if (sysfs_match_word(buf, clean_states) <= 4) | |
1060 | break; | |
1061 | FD_SET(state_fd, &fds); | |
1062 | rv = select(state_fd + 1, NULL, NULL, &fds, &tm); | |
1063 | if (rv < 0 && errno != EINTR) | |
1064 | break; | |
1065 | lseek(state_fd, 0, SEEK_SET); | |
1066 | } | |
1067 | if (rv < 0) | |
1068 | rv = 1; | |
1069 | else if (fping_monitor(sock) == 0 || | |
1070 | ping_monitor(mdi->text_version) == 0) { | |
1071 | /* we need to ping to close the window between array | |
1072 | * state transitioning to clean and the metadata being | |
1073 | * marked clean | |
1074 | */ | |
1075 | rv = 0; | |
1076 | } else | |
1077 | rv = 1; | |
1078 | if (rv && verbose) | |
e7b84f9d | 1079 | pr_err("Error waiting for %s to be clean\n", |
679eb882 N |
1080 | dev); |
1081 | ||
1082 | /* restore the original safe_mode_delay */ | |
1083 | sysfs_set_safemode(mdi, mdi->safe_mode_delay); | |
1084 | close(state_fd); | |
1085 | } | |
1086 | ||
1087 | sysfs_free(mdi); | |
1088 | close(fd); | |
1089 | ||
1090 | return rv; | |
1091 | } | |
1092 | #endif /* MDASSEMBLE */ |