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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; |
73ff0732 | 41 | int from_auto; |
2e0172b1 | 42 | int expected_spares; |
b0599bda N |
43 | int devstate[MAX_DISKS]; |
44 | dev_t devid[MAX_DISKS]; | |
2e0172b1 | 45 | int percent; |
4dd2df09 N |
46 | char parent_devnm[32]; /* For subarray, devnm of parent. |
47 | * For others, "" | |
48 | */ | |
2e0172b1 | 49 | struct supertype *metadata; |
c3621c0a ML |
50 | struct state *subarray;/* for a container it is a link to first subarray |
51 | * for a subarray it is a link to next subarray | |
52 | * in the same container */ | |
53 | struct state *parent; /* for a subarray it is a link to its container | |
54 | */ | |
2e0172b1 N |
55 | struct state *next; |
56 | }; | |
57 | ||
e0bd6a96 N |
58 | struct alert_info { |
59 | char *mailaddr; | |
60 | char *mailfrom; | |
61 | char *alert_cmd; | |
62 | int dosyslog; | |
63 | }; | |
2e0172b1 N |
64 | static int make_daemon(char *pidfile); |
65 | static int check_one_sharer(int scan); | |
e0bd6a96 | 66 | static void alert(char *event, char *dev, char *disc, struct alert_info *info); |
a90e1050 | 67 | static int check_array(struct state *st, struct mdstat_ent *mdstat, |
e0bd6a96 | 68 | int test, struct alert_info *info, |
c2ecf5f6 | 69 | int increments, char *prefer); |
83f3bc5f | 70 | static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist, |
e0bd6a96 N |
71 | int test, struct alert_info *info); |
72 | static void try_spare_migration(struct state *statelist, struct alert_info *info); | |
c3621c0a | 73 | static void link_containers_with_subarrays(struct state *list); |
2e0172b1 | 74 | |
a655e550 | 75 | int Monitor(struct mddev_dev *devlist, |
52826846 | 76 | char *mailaddr, char *alert_cmd, |
95c50205 N |
77 | struct context *c, |
78 | int daemonise, int oneshot, | |
79 | int dosyslog, char *pidfile, int increments, | |
80 | int share) | |
52826846 NB |
81 | { |
82 | /* | |
83 | * Every few seconds, scan every md device looking for changes | |
84 | * When a change is found, log it, possibly run the alert command, | |
85 | * and possibly send Email | |
86 | * | |
87 | * For each array, we record: | |
88 | * Update time | |
89 | * active/working/failed/spare drives | |
90 | * State of each device. | |
e0d19036 | 91 | * %rebuilt if rebuilding |
52826846 NB |
92 | * |
93 | * If the update time changes, check out all the data again | |
94 | * It is possible that we cannot get the state of each device | |
95 | * due to bugs in the md kernel module. | |
e0d19036 NB |
96 | * We also read /proc/mdstat to get rebuild percent, |
97 | * and to get state on all active devices incase of kernel bug. | |
52826846 | 98 | * |
e0d19036 NB |
99 | * Events are: |
100 | * Fail | |
101 | * An active device had Faulty set or Active/Sync removed | |
102 | * FailSpare | |
103 | * A spare device had Faulty set | |
104 | * SpareActive | |
105 | * An active device had a reverse transition | |
106 | * RebuildStarted | |
107 | * percent went from -1 to +ve | |
9a36a9b7 ZB |
108 | * RebuildNN |
109 | * percent went from below to not-below NN% | |
e0d19036 NB |
110 | * DeviceDisappeared |
111 | * Couldn't access a device which was previously visible | |
52826846 NB |
112 | * |
113 | * if we detect an array with active<raid and spare==0 | |
114 | * we look at other arrays that have same spare-group | |
115 | * If we find one with active==raid and spare>0, | |
116 | * and if we can get_disk_info and find a name | |
117 | * Then we hot-remove and hot-add to the other array | |
118 | * | |
e0d19036 NB |
119 | * If devlist is NULL, then we can monitor everything because --scan |
120 | * was given. We get an initial list from config file and add anything | |
121 | * that appears in /proc/mdstat | |
52826846 NB |
122 | */ |
123 | ||
2e0172b1 | 124 | struct state *statelist = NULL; |
b657208c | 125 | struct state *st2; |
52826846 | 126 | int finished = 0; |
e0d19036 | 127 | struct mdstat_ent *mdstat = NULL; |
4948b8f7 | 128 | char *mailfrom = NULL; |
e0bd6a96 | 129 | struct alert_info info; |
e0d19036 | 130 | |
d013a55e | 131 | if (!mailaddr) { |
8aec876d | 132 | mailaddr = conf_get_mailaddr(); |
95c50205 | 133 | if (mailaddr && ! c->scan) |
e7b84f9d | 134 | pr_err("Monitor using email address \"%s\" from config file\n", |
d013a55e NB |
135 | mailaddr); |
136 | } | |
8aec876d | 137 | mailfrom = conf_get_mailfrom(); |
4948b8f7 | 138 | |
d013a55e | 139 | if (!alert_cmd) { |
8aec876d | 140 | alert_cmd = conf_get_program(); |
95c50205 | 141 | if (alert_cmd && ! c->scan) |
e7b84f9d | 142 | pr_err("Monitor using program \"%s\" from config file\n", |
d013a55e NB |
143 | alert_cmd); |
144 | } | |
95c50205 | 145 | if (c->scan && !mailaddr && !alert_cmd && !dosyslog) { |
e7b84f9d | 146 | pr_err("No mail address or alert command - not monitoring.\n"); |
d013a55e | 147 | return 1; |
56eedc1a | 148 | } |
e0bd6a96 N |
149 | info.alert_cmd = alert_cmd; |
150 | info.mailaddr = mailaddr; | |
151 | info.mailfrom = mailfrom; | |
152 | info.dosyslog = dosyslog; | |
d013a55e | 153 | |
44d337f0 AC |
154 | if (daemonise) { |
155 | int rv = make_daemon(pidfile); | |
156 | if (rv >= 0) | |
157 | return rv; | |
158 | } | |
e0d19036 | 159 | |
1011e834 | 160 | if (share) |
95c50205 | 161 | if (check_one_sharer(c->scan)) |
2e0172b1 | 162 | return 1; |
edde9560 | 163 | |
e0d19036 | 164 | if (devlist == NULL) { |
fa56eddb | 165 | struct mddev_ident *mdlist = conf_get_ident(NULL); |
e0d19036 | 166 | for (; mdlist; mdlist=mdlist->next) { |
fe056d1f N |
167 | struct state *st; |
168 | if (mdlist->devname == NULL) | |
169 | continue; | |
112cace6 N |
170 | if (strcasecmp(mdlist->devname, "<ignore>") == 0) |
171 | continue; | |
503975b9 | 172 | st = xcalloc(1, sizeof *st); |
db2d001c | 173 | if (mdlist->devname[0] == '/') |
503975b9 | 174 | st->devname = xstrdup(mdlist->devname); |
db2d001c | 175 | else { |
503975b9 | 176 | st->devname = xmalloc(8+strlen(mdlist->devname)+1); |
db2d001c N |
177 | strcpy(strcpy(st->devname, "/dev/md/"), |
178 | mdlist->devname); | |
179 | } | |
e0d19036 | 180 | st->next = statelist; |
4dd2df09 | 181 | st->devnm[0] = 0; |
9dad51d4 | 182 | st->percent = RESYNC_UNKNOWN; |
f1661bd7 | 183 | st->from_config = 1; |
feb716e9 | 184 | st->expected_spares = mdlist->spare_disks; |
e0d19036 | 185 | if (mdlist->spare_group) |
503975b9 | 186 | st->spare_group = xstrdup(mdlist->spare_group); |
e0d19036 NB |
187 | statelist = st; |
188 | } | |
189 | } else { | |
a655e550 | 190 | struct mddev_dev *dv; |
e0d19036 | 191 | for (dv=devlist ; dv; dv=dv->next) { |
fa56eddb | 192 | struct mddev_ident *mdlist = conf_get_ident(dv->devname); |
503975b9 N |
193 | struct state *st = xcalloc(1, sizeof *st); |
194 | st->devname = xstrdup(dv->devname); | |
e0d19036 | 195 | st->next = statelist; |
4dd2df09 | 196 | st->devnm[0] = 0; |
9dad51d4 | 197 | st->percent = RESYNC_UNKNOWN; |
feb716e9 | 198 | st->expected_spares = -1; |
e5329c37 NB |
199 | if (mdlist) { |
200 | st->expected_spares = mdlist->spare_disks; | |
201 | if (mdlist->spare_group) | |
503975b9 | 202 | st->spare_group = xstrdup(mdlist->spare_group); |
e5329c37 | 203 | } |
e0d19036 NB |
204 | statelist = st; |
205 | } | |
206 | } | |
207 | ||
e0d19036 | 208 | while (! finished) { |
aa88f531 | 209 | int new_found = 0; |
73ff0732 | 210 | struct state *st, **stp; |
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; |
1011e834 | 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; |
73ff0732 N |
240 | |
241 | for (stp = &statelist; (st = *stp) != NULL; ) { | |
242 | if (st->from_auto && st->err > 5) { | |
243 | *stp = st->next; | |
244 | free(st->devname); | |
245 | free(st->spare_group); | |
246 | free(st); | |
247 | } else | |
248 | stp = &st->next; | |
249 | } | |
52826846 | 250 | } |
b657208c JS |
251 | for (st2 = statelist; st2; st2 = statelist) { |
252 | statelist = st2->next; | |
253 | free(st2); | |
254 | } | |
255 | ||
b5e64645 NB |
256 | if (pidfile) |
257 | unlink(pidfile); | |
52826846 NB |
258 | return 0; |
259 | } | |
260 | ||
2e0172b1 N |
261 | static int make_daemon(char *pidfile) |
262 | { | |
44d337f0 AC |
263 | /* Return: |
264 | * -1 in the forked daemon | |
265 | * 0 in the parent | |
266 | * 1 on error | |
267 | * so a none-negative becomes the exit code. | |
268 | */ | |
2e0172b1 N |
269 | int pid = fork(); |
270 | if (pid > 0) { | |
271 | if (!pidfile) | |
272 | printf("%d\n", pid); | |
273 | else { | |
274 | FILE *pid_file; | |
275 | pid_file=fopen(pidfile, "w"); | |
276 | if (!pid_file) | |
277 | perror("cannot create pid file"); | |
278 | else { | |
279 | fprintf(pid_file,"%d\n", pid); | |
280 | fclose(pid_file); | |
281 | } | |
282 | } | |
283 | return 0; | |
284 | } | |
285 | if (pid < 0) { | |
286 | perror("daemonise"); | |
287 | return 1; | |
288 | } | |
289 | close(0); | |
290 | open("/dev/null", O_RDWR); | |
291 | dup2(0,1); | |
292 | dup2(0,2); | |
293 | setsid(); | |
44d337f0 | 294 | return -1; |
2e0172b1 N |
295 | } |
296 | ||
297 | static int check_one_sharer(int scan) | |
298 | { | |
299 | int pid, rv; | |
300 | FILE *fp; | |
301 | char dir[20]; | |
0011874f | 302 | char path[100]; |
2e0172b1 | 303 | struct stat buf; |
0011874f JS |
304 | sprintf(path, "%s/autorebuild.pid", MDMON_DIR); |
305 | fp = fopen(path, "r"); | |
2e0172b1 | 306 | if (fp) { |
71204a50 N |
307 | if (fscanf(fp, "%d", &pid) != 1) |
308 | pid = -1; | |
2e0172b1 N |
309 | sprintf(dir, "/proc/%d", pid); |
310 | rv = stat(dir, &buf); | |
311 | if (rv != -1) { | |
312 | if (scan) { | |
7a862a02 | 313 | pr_err("Only one autorebuild process allowed in scan mode, aborting\n"); |
2e0172b1 N |
314 | fclose(fp); |
315 | return 1; | |
316 | } else { | |
7a862a02 | 317 | pr_err("Warning: One autorebuild process already running.\n"); |
2e0172b1 N |
318 | } |
319 | } | |
320 | fclose(fp); | |
321 | } | |
322 | if (scan) { | |
0011874f | 323 | if (mkdir(MDMON_DIR, S_IRWXU) < 0 && |
a1bb2065 | 324 | errno != EEXIST) { |
7a862a02 | 325 | pr_err("Can't create autorebuild.pid file\n"); |
a1bb2065 | 326 | } else { |
0011874f | 327 | fp = fopen(path, "w"); |
a1bb2065 | 328 | if (!fp) |
7a862a02 | 329 | pr_err("Cannot create autorebuild.pidfile\n"); |
a1bb2065 AC |
330 | else { |
331 | pid = getpid(); | |
332 | fprintf(fp, "%d\n", pid); | |
333 | fclose(fp); | |
334 | } | |
2e0172b1 N |
335 | } |
336 | } | |
337 | return 0; | |
338 | } | |
52826846 | 339 | |
e0bd6a96 | 340 | static void alert(char *event, char *dev, char *disc, struct alert_info *info) |
52826846 | 341 | { |
773135f5 NB |
342 | int priority; |
343 | ||
b1bac75b | 344 | if (!info->alert_cmd && !info->mailaddr && !info->dosyslog) { |
cd29a5c8 | 345 | time_t now = time(0); |
aba69144 | 346 | |
e0d19036 | 347 | printf("%1.15s: %s on %s %s\n", ctime(&now)+4, event, dev, disc?disc:"unknown device"); |
cd29a5c8 | 348 | } |
e0bd6a96 | 349 | if (info->alert_cmd) { |
52826846 NB |
350 | int pid = fork(); |
351 | switch(pid) { | |
352 | default: | |
353 | waitpid(pid, NULL, 0); | |
354 | break; | |
355 | case -1: | |
356 | break; | |
357 | case 0: | |
e0bd6a96 N |
358 | execl(info->alert_cmd, info->alert_cmd, |
359 | event, dev, disc, NULL); | |
52826846 NB |
360 | exit(2); |
361 | } | |
362 | } | |
e0bd6a96 | 363 | if (info->mailaddr && |
aba69144 | 364 | (strncmp(event, "Fail", 4)==0 || |
98c6faba | 365 | strncmp(event, "Test", 4)==0 || |
d1732eeb | 366 | strncmp(event, "Spares", 6)==0 || |
aa88f531 | 367 | strncmp(event, "Degrade", 7)==0)) { |
52826846 NB |
368 | FILE *mp = popen(Sendmail, "w"); |
369 | if (mp) { | |
008e1100 | 370 | FILE *mdstat; |
52826846 NB |
371 | char hname[256]; |
372 | gethostname(hname, sizeof(hname)); | |
373 | signal(SIGPIPE, SIG_IGN); | |
e0bd6a96 N |
374 | if (info->mailfrom) |
375 | fprintf(mp, "From: %s\n", info->mailfrom); | |
4948b8f7 | 376 | else |
d56dd607 | 377 | fprintf(mp, "From: %s monitoring <root>\n", Name); |
e0bd6a96 N |
378 | fprintf(mp, "To: %s\n", info->mailaddr); |
379 | fprintf(mp, "Subject: %s event on %s:%s\n\n", | |
380 | event, dev, hname); | |
52826846 | 381 | |
e0bd6a96 | 382 | fprintf(mp, |
7a862a02 | 383 | "This is an automatically generated mail message from %s\n", Name); |
52826846 NB |
384 | fprintf(mp, "running on %s\n\n", hname); |
385 | ||
e0bd6a96 | 386 | fprintf(mp, |
7a862a02 | 387 | "A %s event had been detected on md device %s.\n\n", event, dev); |
52826846 | 388 | |
37dfc3d6 | 389 | if (disc && disc[0] != ' ') |
e0bd6a96 | 390 | fprintf(mp, |
7a862a02 | 391 | "It could be related to 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 | 401 | fprintf(mp, |
7a862a02 | 402 | "\nP.S. The /proc/mdstat file currently contains the following:\n\n"); |
008e1100 | 403 | while ( (n=fread(buf, 1, sizeof(buf), mdstat)) > 0) |
e0bd6a96 | 404 | n=fwrite(buf, 1, n, mp); |
008e1100 NB |
405 | fclose(mdstat); |
406 | } | |
6278fb3a | 407 | pclose(mp); |
52826846 | 408 | } |
52826846 | 409 | } |
773135f5 NB |
410 | |
411 | /* log the event to syslog maybe */ | |
e0bd6a96 | 412 | if (info->dosyslog) { |
773135f5 NB |
413 | /* Log at a different severity depending on the event. |
414 | * | |
415 | * These are the critical events: */ | |
416 | if (strncmp(event, "Fail", 4)==0 || | |
417 | strncmp(event, "Degrade", 7)==0 || | |
418 | strncmp(event, "DeviceDisappeared", 17)==0) | |
419 | priority = LOG_CRIT; | |
420 | /* Good to know about, but are not failures: */ | |
421 | else if (strncmp(event, "Rebuild", 7)==0 || | |
d1732eeb NB |
422 | strncmp(event, "MoveSpare", 9)==0 || |
423 | strncmp(event, "Spares", 6) != 0) | |
773135f5 NB |
424 | priority = LOG_WARNING; |
425 | /* Everything else: */ | |
426 | else | |
427 | priority = LOG_INFO; | |
428 | ||
b033913a | 429 | if (disc && disc[0] != ' ') |
e0bd6a96 | 430 | syslog(priority, |
7a862a02 | 431 | "%s event detected on md device %s, component device %s", event, dev, disc); |
b033913a N |
432 | else if (disc) |
433 | syslog(priority, | |
434 | "%s event detected on md device %s: %s", | |
435 | event, dev, disc); | |
773135f5 | 436 | else |
e0bd6a96 N |
437 | syslog(priority, |
438 | "%s event detected on md device %s", | |
439 | event, dev); | |
773135f5 | 440 | } |
52826846 | 441 | } |
b90c0e9a | 442 | |
a90e1050 | 443 | static int check_array(struct state *st, struct mdstat_ent *mdstat, |
e0bd6a96 | 444 | int test, struct alert_info *ainfo, |
c2ecf5f6 | 445 | int increments, char *prefer) |
2e0172b1 | 446 | { |
ff044d6b AC |
447 | /* Update the state 'st' to reflect any changes shown in mdstat, |
448 | * or found by directly examining the array, and return | |
449 | * '1' if the array is degraded, or '0' if it is optimal (or dead). | |
450 | */ | |
b0599bda | 451 | struct { int state, major, minor; } info[MAX_DISKS]; |
2e0172b1 N |
452 | mdu_array_info_t array; |
453 | struct mdstat_ent *mse = NULL, *mse2; | |
454 | char *dev = st->devname; | |
9a518d81 | 455 | int fd = -1; |
2e0172b1 | 456 | int i; |
9e6d9291 N |
457 | int remaining_disks; |
458 | int last_disk; | |
721b662b | 459 | int new_array = 0; |
2e0172b1 N |
460 | |
461 | if (test) | |
e0bd6a96 | 462 | alert("TestMessage", dev, NULL, ainfo); |
9a518d81 N |
463 | if (st->devnm[0]) |
464 | fd = open("/sys/block", O_RDONLY|O_DIRECTORY); | |
465 | if (fd >= 0) { | |
466 | /* Don't open the device unless it is present and | |
467 | * active in sysfs. | |
468 | */ | |
469 | char buf[10]; | |
470 | close(fd); | |
471 | fd = sysfs_open(st->devnm, NULL, "array_state"); | |
472 | if (fd < 0 || | |
473 | read(fd, buf, 10) < 5 || | |
474 | strncmp(buf,"clear",5) == 0 || | |
475 | strncmp(buf,"inact",5) == 0) { | |
476 | if (fd >= 0) | |
477 | close(fd); | |
19d3ea0f AP |
478 | fd = sysfs_open(st->devnm, NULL, "level"); |
479 | if (fd < 0 || read(fd, buf, 10) != 0) { | |
480 | if (fd >= 0) | |
481 | close(fd); | |
482 | if (!st->err) | |
483 | alert("DeviceDisappeared", dev, NULL, ainfo); | |
484 | st->err++; | |
485 | return 0; | |
486 | } | |
9a518d81 | 487 | } |
19d3ea0f | 488 | close(fd); |
9a518d81 | 489 | } |
2e0172b1 N |
490 | fd = open(dev, O_RDONLY); |
491 | if (fd < 0) { | |
492 | if (!st->err) | |
e0bd6a96 | 493 | alert("DeviceDisappeared", dev, NULL, ainfo); |
73ff0732 | 494 | st->err++; |
a90e1050 | 495 | return 0; |
2e0172b1 N |
496 | } |
497 | fcntl(fd, F_SETFD, FD_CLOEXEC); | |
498 | if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { | |
499 | if (!st->err) | |
e0bd6a96 | 500 | alert("DeviceDisappeared", dev, NULL, ainfo); |
73ff0732 | 501 | st->err++; |
2e0172b1 | 502 | close(fd); |
a90e1050 | 503 | return 0; |
2e0172b1 N |
504 | } |
505 | /* It's much easier to list what array levels can't | |
506 | * have a device disappear than all of them that can | |
507 | */ | |
508 | if (array.level == 0 || array.level == -1) { | |
f1661bd7 | 509 | if (!st->err && !st->from_config) |
04e27c20 | 510 | alert("DeviceDisappeared", dev, " Wrong-Level", ainfo); |
73ff0732 | 511 | st->err++; |
2e0172b1 | 512 | close(fd); |
a90e1050 | 513 | return 0; |
2e0172b1 | 514 | } |
4dd2df09 N |
515 | if (st->devnm[0] == 0) |
516 | strcpy(st->devnm, fd2devnm(fd)); | |
2e0172b1 N |
517 | |
518 | for (mse2 = mdstat ; mse2 ; mse2=mse2->next) | |
4dd2df09 N |
519 | if (strcmp(mse2->devnm, st->devnm) == 0) { |
520 | mse2->devnm[0] = 0; /* flag it as "used" */ | |
2e0172b1 N |
521 | mse = mse2; |
522 | } | |
523 | ||
524 | if (!mse) { | |
525 | /* duplicated array in statelist | |
526 | * or re-created after reading mdstat*/ | |
73ff0732 | 527 | st->err++; |
2e0172b1 | 528 | close(fd); |
a90e1050 | 529 | return 0; |
2e0172b1 N |
530 | } |
531 | /* this array is in /proc/mdstat */ | |
532 | if (array.utime == 0) | |
533 | /* external arrays don't update utime, so | |
534 | * just make sure it is always different. */ | |
535 | array.utime = st->utime + 1;; | |
536 | ||
0f760384 | 537 | if (st->err) { |
73ff0732 | 538 | /* New array appeared where previously had an error */ |
0f760384 N |
539 | st->err = 0; |
540 | st->percent = RESYNC_NONE; | |
721b662b | 541 | new_array = 1; |
0f760384 N |
542 | alert("NewArray", st->devname, NULL, ainfo); |
543 | } | |
544 | ||
2e0172b1 N |
545 | if (st->utime == array.utime && |
546 | st->failed == array.failed_disks && | |
547 | st->working == array.working_disks && | |
548 | st->spare == array.spare_disks && | |
549 | (mse == NULL || ( | |
550 | mse->percent == st->percent | |
551 | ))) { | |
552 | close(fd); | |
ff044d6b AC |
553 | if ((st->active < st->raid) && st->spare == 0) |
554 | return 1; | |
555 | else | |
556 | return 0; | |
2e0172b1 N |
557 | } |
558 | if (st->utime == 0 && /* new array */ | |
559 | mse->pattern && strchr(mse->pattern, '_') /* degraded */ | |
560 | ) | |
e0bd6a96 | 561 | alert("DegradedArray", dev, NULL, ainfo); |
2e0172b1 N |
562 | |
563 | if (st->utime == 0 && /* new array */ | |
564 | st->expected_spares > 0 && | |
565 | array.spare_disks < st->expected_spares) | |
e0bd6a96 | 566 | alert("SparesMissing", dev, NULL, ainfo); |
9dad51d4 | 567 | if (st->percent < 0 && st->percent != RESYNC_UNKNOWN && |
2e0172b1 | 568 | mse->percent >= 0) |
e0bd6a96 | 569 | alert("RebuildStarted", dev, NULL, ainfo); |
2e0172b1 N |
570 | if (st->percent >= 0 && |
571 | mse->percent >= 0 && | |
572 | (mse->percent / increments) > (st->percent / increments)) { | |
573 | char percentalert[15]; // "RebuildNN" (10 chars) or "RebuildStarted" (15 chars) | |
574 | ||
575 | if((mse->percent / increments) == 0) | |
576 | snprintf(percentalert, sizeof(percentalert), "RebuildStarted"); | |
577 | else | |
578 | snprintf(percentalert, sizeof(percentalert), "Rebuild%02d", mse->percent); | |
579 | ||
e0bd6a96 | 580 | alert(percentalert, dev, NULL, ainfo); |
2e0172b1 N |
581 | } |
582 | ||
9dad51d4 | 583 | if (mse->percent == RESYNC_NONE && |
2e0172b1 N |
584 | st->percent >= 0) { |
585 | /* Rebuild/sync/whatever just finished. | |
586 | * If there is a number in /mismatch_cnt, | |
587 | * we should report that. | |
588 | */ | |
589 | struct mdinfo *sra = | |
4dd2df09 | 590 | sysfs_read(-1, st->devnm, GET_MISMATCH); |
2e0172b1 | 591 | if (sra && sra->mismatch_cnt > 0) { |
8453f8d0 LD |
592 | char cnt[80]; |
593 | snprintf(cnt, sizeof(cnt), | |
594 | " mismatches found: %d (on raid level %d)", | |
d97a5e60 | 595 | sra->mismatch_cnt, array.level); |
e0bd6a96 | 596 | alert("RebuildFinished", dev, cnt, ainfo); |
2e0172b1 | 597 | } else |
e0bd6a96 | 598 | alert("RebuildFinished", dev, NULL, ainfo); |
2e0172b1 N |
599 | if (sra) |
600 | free(sra); | |
601 | } | |
602 | st->percent = mse->percent; | |
603 | ||
9e6d9291 | 604 | remaining_disks = array.nr_disks; |
b0599bda | 605 | for (i=0; i<MAX_DISKS && remaining_disks > 0; |
2e0172b1 N |
606 | i++) { |
607 | mdu_disk_info_t disc; | |
608 | disc.number = i; | |
609 | if (ioctl(fd, GET_DISK_INFO, &disc) >= 0) { | |
610 | info[i].state = disc.state; | |
611 | info[i].major = disc.major; | |
612 | info[i].minor = disc.minor; | |
9e6d9291 N |
613 | if (disc.major || disc.minor) |
614 | remaining_disks --; | |
2e0172b1 N |
615 | } else |
616 | info[i].major = info[i].minor = 0; | |
617 | } | |
9e6d9291 | 618 | last_disk = i; |
2e0172b1 | 619 | |
4019ad07 JL |
620 | if (mse->metadata_version && |
621 | strncmp(mse->metadata_version, "external:", 9) == 0 && | |
4dd2df09 N |
622 | is_subarray(mse->metadata_version+9)) { |
623 | char *sl; | |
624 | strcpy(st->parent_devnm, | |
625 | mse->metadata_version+10); | |
626 | sl = strchr(st->parent_devnm, '/'); | |
627 | if (sl) | |
628 | *sl = 0; | |
629 | } else | |
630 | st->parent_devnm[0] = 0; | |
2e0172b1 | 631 | if (st->metadata == NULL && |
4dd2df09 | 632 | st->parent_devnm[0] == 0) |
2e0172b1 N |
633 | st->metadata = super_by_fd(fd, NULL); |
634 | ||
635 | close(fd); | |
636 | ||
b0599bda | 637 | for (i=0; i<MAX_DISKS; i++) { |
2e0172b1 N |
638 | mdu_disk_info_t disc = {0,0,0,0,0}; |
639 | int newstate=0; | |
640 | int change; | |
641 | char *dv = NULL; | |
642 | disc.number = i; | |
721b662b N |
643 | if (i < last_disk && |
644 | (info[i].major || info[i].minor)) { | |
2e0172b1 | 645 | newstate = info[i].state; |
c2ecf5f6 N |
646 | dv = map_dev_preferred( |
647 | info[i].major, info[i].minor, 1, | |
648 | prefer); | |
2e0172b1 N |
649 | disc.state = newstate; |
650 | disc.major = info[i].major; | |
651 | disc.minor = info[i].minor; | |
721b662b N |
652 | } else |
653 | newstate = (1 << MD_DISK_REMOVED); | |
654 | ||
2e0172b1 | 655 | if (dv == NULL && st->devid[i]) |
c2ecf5f6 N |
656 | dv = map_dev_preferred( |
657 | major(st->devid[i]), | |
658 | minor(st->devid[i]), 1, prefer); | |
2e0172b1 | 659 | change = newstate ^ st->devstate[i]; |
721b662b N |
660 | if (st->utime && change && !st->err && !new_array) { |
661 | if ((st->devstate[i]&change)&(1<<MD_DISK_SYNC)) | |
e0bd6a96 | 662 | alert("Fail", dev, dv, ainfo); |
721b662b | 663 | else if ((newstate & (1<<MD_DISK_FAULTY)) && |
2e0172b1 | 664 | (disc.major || disc.minor) && |
721b662b | 665 | st->devid[i] == makedev(disc.major, disc.minor)) |
e0bd6a96 | 666 | alert("FailSpare", dev, dv, ainfo); |
721b662b | 667 | else if ((newstate&change)&(1<<MD_DISK_SYNC)) |
e0bd6a96 | 668 | alert("SpareActive", dev, dv, ainfo); |
2e0172b1 N |
669 | } |
670 | st->devstate[i] = newstate; | |
671 | st->devid[i] = makedev(disc.major, disc.minor); | |
672 | } | |
673 | st->active = array.active_disks; | |
674 | st->working = array.working_disks; | |
675 | st->spare = array.spare_disks; | |
676 | st->failed = array.failed_disks; | |
677 | st->utime = array.utime; | |
678 | st->raid = array.raid_disks; | |
679 | st->err = 0; | |
a90e1050 N |
680 | if ((st->active < st->raid) && st->spare == 0) |
681 | return 1; | |
682 | return 0; | |
2e0172b1 N |
683 | } |
684 | ||
83f3bc5f | 685 | static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist, |
e0bd6a96 | 686 | int test, struct alert_info *info) |
2e0172b1 N |
687 | { |
688 | struct mdstat_ent *mse; | |
689 | int new_found = 0; | |
1e08717f | 690 | char *name; |
2e0172b1 N |
691 | |
692 | for (mse=mdstat; mse; mse=mse->next) | |
4dd2df09 | 693 | if (mse->devnm[0] && |
2e0172b1 N |
694 | (!mse->level || /* retrieve containers */ |
695 | (strcmp(mse->level, "raid0") != 0 && | |
696 | strcmp(mse->level, "linear") != 0)) | |
697 | ) { | |
503975b9 | 698 | struct state *st = xcalloc(1, sizeof *st); |
2e0172b1 N |
699 | mdu_array_info_t array; |
700 | int fd; | |
1e08717f SV |
701 | |
702 | name = get_md_name(mse->devnm); | |
703 | if (!name) { | |
704 | free(st); | |
705 | continue; | |
706 | } | |
707 | ||
708 | st->devname = xstrdup(name); | |
2e0172b1 N |
709 | if ((fd = open(st->devname, O_RDONLY)) < 0 || |
710 | ioctl(fd, GET_ARRAY_INFO, &array)< 0) { | |
711 | /* no such array */ | |
712 | if (fd >=0) close(fd); | |
713 | put_md_name(st->devname); | |
714 | free(st->devname); | |
715 | if (st->metadata) { | |
716 | st->metadata->ss->free_super(st->metadata); | |
717 | free(st->metadata); | |
718 | } | |
719 | free(st); | |
720 | continue; | |
721 | } | |
722 | close(fd); | |
83f3bc5f | 723 | st->next = *statelist; |
2e0172b1 | 724 | st->err = 1; |
73ff0732 | 725 | st->from_auto = 1; |
4dd2df09 | 726 | strcpy(st->devnm, mse->devnm); |
9dad51d4 | 727 | st->percent = RESYNC_UNKNOWN; |
2e0172b1 | 728 | st->expected_spares = -1; |
eb28e119 N |
729 | if (mse->metadata_version && |
730 | strncmp(mse->metadata_version, "external:", 9) == 0 && | |
4dd2df09 N |
731 | is_subarray(mse->metadata_version+9)) { |
732 | char *sl; | |
733 | strcpy(st->parent_devnm, | |
734 | mse->metadata_version+10); | |
735 | sl = strchr(st->parent_devnm, '/'); | |
736 | *sl = 0; | |
737 | } else | |
738 | st->parent_devnm[0] = 0; | |
83f3bc5f | 739 | *statelist = st; |
2e0172b1 | 740 | if (test) |
e0bd6a96 | 741 | alert("TestMessage", st->devname, NULL, info); |
2e0172b1 N |
742 | new_found = 1; |
743 | } | |
744 | return new_found; | |
745 | } | |
746 | ||
de697acc | 747 | static int get_min_spare_size_required(struct state *st, unsigned long long *sizep) |
80e7f8c3 AC |
748 | { |
749 | int fd; | |
80e7f8c3 AC |
750 | |
751 | if (!st->metadata || | |
300f5033 CA |
752 | !st->metadata->ss->min_acceptable_spare_size) { |
753 | *sizep = 0; | |
de697acc | 754 | return 0; |
300f5033 | 755 | } |
80e7f8c3 AC |
756 | |
757 | fd = open(st->devname, O_RDONLY); | |
758 | if (fd < 0) | |
de697acc AC |
759 | return 1; |
760 | if (st->metadata->ss->external) | |
761 | st->metadata->ss->load_container(st->metadata, fd, st->devname); | |
762 | else | |
763 | st->metadata->ss->load_super(st->metadata, fd, st->devname); | |
80e7f8c3 | 764 | close(fd); |
de697acc AC |
765 | if (!st->metadata->sb) |
766 | return 1; | |
767 | *sizep = st->metadata->ss->min_acceptable_spare_size(st->metadata); | |
80e7f8c3 AC |
768 | st->metadata->ss->free_super(st->metadata); |
769 | ||
de697acc | 770 | return 0; |
80e7f8c3 AC |
771 | } |
772 | ||
5ec0f373 | 773 | static int check_donor(struct state *from, struct state *to) |
2feb22ef | 774 | { |
66f5c4b6 N |
775 | struct state *sub; |
776 | ||
2feb22ef N |
777 | if (from == to) |
778 | return 0; | |
66f5c4b6 N |
779 | if (from->parent) |
780 | /* Cannot move from a member */ | |
2feb22ef | 781 | return 0; |
ff044d6b AC |
782 | if (from->err) |
783 | return 0; | |
66f5c4b6 N |
784 | for (sub = from->subarray; sub; sub = sub->subarray) |
785 | /* If source array has degraded subarrays, don't | |
786 | * remove anything | |
787 | */ | |
788 | if (sub->active < sub->raid) | |
789 | return 0; | |
790 | if (from->metadata->ss->external == 0) | |
791 | if (from->active < from->raid) | |
792 | return 0; | |
2feb22ef N |
793 | if (from->spare <= 0) |
794 | return 0; | |
e78dda3b | 795 | return 1; |
2feb22ef N |
796 | } |
797 | ||
0f0749ad | 798 | static dev_t choose_spare(struct state *from, struct state *to, |
f0b85306 | 799 | struct domainlist *domlist, unsigned long long min_size) |
0fa21e85 N |
800 | { |
801 | int d; | |
0f0749ad | 802 | dev_t dev = 0; |
0fa21e85 | 803 | |
b0599bda | 804 | for (d = from->raid; !dev && d < MAX_DISKS; d++) { |
0fa21e85 N |
805 | if (from->devid[d] > 0 && |
806 | from->devstate[d] == 0) { | |
807 | struct dev_policy *pol; | |
808 | unsigned long long dev_size; | |
809 | ||
bfd76b93 CA |
810 | if (to->metadata->ss->external && |
811 | test_partition_from_id(from->devid[d])) | |
812 | continue; | |
813 | ||
0fa21e85 N |
814 | if (min_size && |
815 | dev_size_from_id(from->devid[d], &dev_size) && | |
816 | dev_size < min_size) | |
817 | continue; | |
818 | ||
4dd2df09 | 819 | pol = devid_policy(from->devid[d]); |
0fa21e85 N |
820 | if (from->spare_group) |
821 | pol_add(&pol, pol_domain, | |
822 | from->spare_group, NULL); | |
e5508b36 | 823 | if (domain_test(domlist, pol, to->metadata->ss->name) == 1) |
0fa21e85 N |
824 | dev = from->devid[d]; |
825 | dev_policy_free(pol); | |
826 | } | |
827 | } | |
828 | return dev; | |
829 | } | |
830 | ||
0f0749ad | 831 | static dev_t container_choose_spare(struct state *from, struct state *to, |
f0b85306 | 832 | struct domainlist *domlist, |
a1e49d69 | 833 | unsigned long long min_size, int active) |
5739e0d0 N |
834 | { |
835 | /* This is similar to choose_spare, but we cannot trust devstate, | |
836 | * so we need to read the metadata instead | |
837 | */ | |
326727d9 | 838 | struct mdinfo *list; |
5739e0d0 | 839 | struct supertype *st = from->metadata; |
ff044d6b | 840 | int fd = open(from->devname, O_RDONLY); |
5739e0d0 | 841 | int err; |
0f0749ad | 842 | dev_t dev = 0; |
5739e0d0 N |
843 | |
844 | if (fd < 0) | |
845 | return 0; | |
326727d9 AC |
846 | if (!st->ss->getinfo_super_disks) { |
847 | close(fd); | |
5739e0d0 | 848 | return 0; |
326727d9 | 849 | } |
1011e834 | 850 | |
5739e0d0 N |
851 | err = st->ss->load_container(st, fd, NULL); |
852 | close(fd); | |
853 | if (err) | |
854 | return 0; | |
1011e834 | 855 | |
a1e49d69 CA |
856 | if (from == to) { |
857 | /* We must check if number of active disks has not increased | |
858 | * since ioctl in main loop. mdmon may have added spare | |
859 | * to subarray. If so we do not need to look for more spares | |
860 | * so return non zero value */ | |
861 | int active_cnt = 0; | |
862 | struct mdinfo *dp; | |
863 | list = st->ss->getinfo_super_disks(st); | |
864 | if (!list) { | |
865 | st->ss->free_super(st); | |
866 | return 1; | |
867 | } | |
868 | dp = list->devs; | |
869 | while (dp) { | |
870 | if (dp->disk.state & (1<<MD_DISK_SYNC) && | |
871 | !(dp->disk.state & (1<<MD_DISK_FAULTY))) | |
872 | active_cnt++; | |
873 | dp = dp->next; | |
874 | } | |
875 | sysfs_free(list); | |
876 | if (active < active_cnt) { | |
877 | /* Spare just activated.*/ | |
878 | st->ss->free_super(st); | |
879 | return 1; | |
880 | } | |
881 | } | |
882 | ||
326727d9 AC |
883 | /* We only need one spare so full list not needed */ |
884 | list = container_choose_spares(st, min_size, domlist, from->spare_group, | |
885 | to->metadata->ss->name, 1); | |
886 | if (list) { | |
887 | struct mdinfo *disks = list->devs; | |
888 | if (disks) | |
889 | dev = makedev(disks->disk.major, disks->disk.minor); | |
890 | sysfs_free(list); | |
5739e0d0 | 891 | } |
326727d9 | 892 | st->ss->free_super(st); |
5739e0d0 N |
893 | return dev; |
894 | } | |
895 | ||
e0bd6a96 | 896 | static void try_spare_migration(struct state *statelist, struct alert_info *info) |
2e0172b1 | 897 | { |
66f5c4b6 N |
898 | struct state *from; |
899 | struct state *st; | |
c3621c0a ML |
900 | |
901 | link_containers_with_subarrays(statelist); | |
66f5c4b6 N |
902 | for (st = statelist; st; st = st->next) |
903 | if (st->active < st->raid && | |
ef15641f | 904 | st->spare == 0 && !st->err) { |
e78dda3b N |
905 | struct domainlist *domlist = NULL; |
906 | int d; | |
66f5c4b6 | 907 | struct state *to = st; |
f0b85306 | 908 | unsigned long long min_size; |
66f5c4b6 | 909 | |
4dd2df09 | 910 | if (to->parent_devnm[0] && !to->parent) |
c0dc0ad5 CA |
911 | /* subarray monitored without parent container |
912 | * we can't move spares here */ | |
913 | continue; | |
1011e834 | 914 | |
66f5c4b6 N |
915 | if (to->parent) |
916 | /* member of a container */ | |
917 | to = to->parent; | |
e78dda3b | 918 | |
de697acc AC |
919 | if (get_min_spare_size_required(to, &min_size)) |
920 | continue; | |
e9a2ac02 AC |
921 | if (to->metadata->ss->external) { |
922 | /* We must make sure there is | |
923 | * no suitable spare in container already. | |
924 | * If there is we don't add more */ | |
925 | dev_t devid = container_choose_spare( | |
a1e49d69 | 926 | to, to, NULL, min_size, st->active); |
e9a2ac02 AC |
927 | if (devid > 0) |
928 | continue; | |
929 | } | |
b0599bda | 930 | for (d = 0; d < MAX_DISKS; d++) |
e78dda3b N |
931 | if (to->devid[d]) |
932 | domainlist_add_dev(&domlist, | |
933 | to->devid[d], | |
934 | to->metadata->ss->name); | |
935 | if (to->spare_group) | |
936 | domain_add(&domlist, to->spare_group); | |
5ec0f373 ML |
937 | /* |
938 | * No spare migration if the destination | |
939 | * has no domain. Skip this array. | |
940 | */ | |
941 | if (!domlist) | |
942 | continue; | |
0fa21e85 | 943 | for (from=statelist ; from ; from=from->next) { |
0f0749ad | 944 | dev_t devid; |
5ec0f373 | 945 | if (!check_donor(from, to)) |
0fa21e85 | 946 | continue; |
5739e0d0 N |
947 | if (from->metadata->ss->external) |
948 | devid = container_choose_spare( | |
a1e49d69 | 949 | from, to, domlist, min_size, 0); |
5739e0d0 | 950 | else |
f0b85306 AC |
951 | devid = choose_spare(from, to, domlist, |
952 | min_size); | |
0fa21e85 | 953 | if (devid > 0 |
d52bb542 AC |
954 | && move_spare(from->devname, to->devname, devid)) { |
955 | alert("MoveSpare", to->devname, from->devname, info); | |
956 | break; | |
957 | } | |
0fa21e85 | 958 | } |
e78dda3b | 959 | domain_free(domlist); |
2e0172b1 N |
960 | } |
961 | } | |
c3621c0a ML |
962 | |
963 | /* search the statelist to connect external | |
964 | * metadata subarrays with their containers | |
965 | * We always completely rebuild the tree from scratch as | |
966 | * that is safest considering the possibility of entries | |
967 | * disappearing or changing. | |
968 | */ | |
969 | static void link_containers_with_subarrays(struct state *list) | |
970 | { | |
971 | struct state *st; | |
972 | struct state *cont; | |
973 | for (st = list; st; st = st->next) { | |
974 | st->parent = NULL; | |
975 | st->subarray = NULL; | |
976 | } | |
977 | for (st = list; st; st = st->next) | |
4dd2df09 | 978 | if (st->parent_devnm[0]) |
c3621c0a ML |
979 | for (cont = list; cont; cont = cont->next) |
980 | if (!cont->err && | |
4dd2df09 N |
981 | cont->parent_devnm[0] == 0 && |
982 | strcmp(cont->devnm, st->parent_devnm) == 0) { | |
c3621c0a ML |
983 | st->parent = cont; |
984 | st->subarray = cont->subarray; | |
985 | cont->subarray = st; | |
986 | break; | |
987 | } | |
988 | } | |
989 | ||
b90c0e9a NB |
990 | /* Not really Monitor but ... */ |
991 | int Wait(char *dev) | |
992 | { | |
993 | struct stat stb; | |
4dd2df09 | 994 | char devnm[32]; |
b90c0e9a | 995 | int rv = 1; |
d3f6cf4f | 996 | int frozen_remaining = 3; |
b90c0e9a NB |
997 | |
998 | if (stat(dev, &stb) != 0) { | |
e7b84f9d | 999 | pr_err("Cannot find %s: %s\n", dev, |
b90c0e9a NB |
1000 | strerror(errno)); |
1001 | return 2; | |
1002 | } | |
4dd2df09 | 1003 | strcpy(devnm, stat2devnm(&stb)); |
b90c0e9a NB |
1004 | |
1005 | while(1) { | |
1006 | struct mdstat_ent *ms = mdstat_read(1, 0); | |
1007 | struct mdstat_ent *e; | |
1008 | ||
1009 | for (e=ms ; e; e=e->next) | |
4dd2df09 | 1010 | if (strcmp(e->devnm, devnm) == 0) |
b90c0e9a NB |
1011 | break; |
1012 | ||
d3f6cf4f | 1013 | if (e && e->percent == RESYNC_NONE) { |
276be514 N |
1014 | /* We could be in the brief pause before something |
1015 | * starts. /proc/mdstat doesn't show that, but | |
1016 | * sync_action does. | |
1017 | */ | |
1018 | struct mdinfo mdi; | |
1019 | char buf[21]; | |
1020 | sysfs_init(&mdi, -1, devnm); | |
1021 | if (sysfs_get_str(&mdi, NULL, "sync_action", | |
1022 | buf, 20) > 0 && | |
d3f6cf4f | 1023 | strcmp(buf,"idle\n") != 0) { |
276be514 | 1024 | e->percent = RESYNC_UNKNOWN; |
d3f6cf4f N |
1025 | if (strcmp(buf, "frozen\n") == 0) { |
1026 | if (frozen_remaining == 0) | |
1027 | e->percent = RESYNC_NONE; | |
1028 | else | |
1029 | frozen_remaining -= 1; | |
1030 | } | |
1031 | } | |
276be514 | 1032 | } |
639c3c10 | 1033 | if (!e || e->percent == RESYNC_NONE) { |
e7783ee6 | 1034 | if (e && e->metadata_version && |
c94709e8 DW |
1035 | strncmp(e->metadata_version, "external:", 9) == 0) { |
1036 | if (is_subarray(&e->metadata_version[9])) | |
1037 | ping_monitor(&e->metadata_version[9]); | |
1038 | else | |
4dd2df09 | 1039 | ping_monitor(devnm); |
c94709e8 | 1040 | } |
b90c0e9a NB |
1041 | free_mdstat(ms); |
1042 | return rv; | |
1043 | } | |
89a10d84 | 1044 | free_mdstat(ms); |
b90c0e9a NB |
1045 | rv = 0; |
1046 | mdstat_wait(5); | |
1047 | } | |
1048 | } | |
679eb882 N |
1049 | |
1050 | #ifndef MDASSEMBLE | |
1051 | ||
1052 | static char *clean_states[] = { | |
1053 | "clear", "inactive", "readonly", "read-auto", "clean", NULL }; | |
1054 | ||
1055 | int WaitClean(char *dev, int sock, int verbose) | |
1056 | { | |
1057 | int fd; | |
1058 | struct mdinfo *mdi; | |
1059 | int rv = 1; | |
4dd2df09 | 1060 | char devnm[32]; |
679eb882 N |
1061 | |
1062 | fd = open(dev, O_RDONLY); | |
1063 | if (fd < 0) { | |
1064 | if (verbose) | |
e7b84f9d | 1065 | pr_err("Couldn't open %s: %s\n", dev, strerror(errno)); |
679eb882 N |
1066 | return 1; |
1067 | } | |
1068 | ||
4dd2df09 N |
1069 | strcpy(devnm, fd2devnm(fd)); |
1070 | mdi = sysfs_read(fd, devnm, GET_VERSION|GET_LEVEL|GET_SAFEMODE); | |
679eb882 N |
1071 | if (!mdi) { |
1072 | if (verbose) | |
7a862a02 | 1073 | pr_err("Failed to read sysfs attributes for %s\n", dev); |
679eb882 N |
1074 | close(fd); |
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | switch(mdi->array.level) { | |
1079 | case LEVEL_LINEAR: | |
1080 | case LEVEL_MULTIPATH: | |
1081 | case 0: | |
1082 | /* safemode delay is irrelevant for these levels */ | |
1083 | rv = 0; | |
1084 | } | |
1085 | ||
1086 | /* for internal metadata the kernel handles the final clean | |
1087 | * transition, containers can never be dirty | |
1088 | */ | |
1089 | if (!is_subarray(mdi->text_version)) | |
1090 | rv = 0; | |
1091 | ||
1092 | /* safemode disabled ? */ | |
1093 | if (mdi->safe_mode_delay == 0) | |
1094 | rv = 0; | |
1095 | ||
1096 | if (rv) { | |
4dd2df09 | 1097 | int state_fd = sysfs_open(fd2devnm(fd), NULL, "array_state"); |
679eb882 | 1098 | char buf[20]; |
efc67e8e | 1099 | int delay = 5000; |
679eb882 N |
1100 | |
1101 | /* minimize the safe_mode_delay and prepare to wait up to 5s | |
1102 | * for writes to quiesce | |
1103 | */ | |
1104 | sysfs_set_safemode(mdi, 1); | |
679eb882 N |
1105 | |
1106 | /* wait for array_state to be clean */ | |
1107 | while (1) { | |
1108 | rv = read(state_fd, buf, sizeof(buf)); | |
1109 | if (rv < 0) | |
1110 | break; | |
1111 | if (sysfs_match_word(buf, clean_states) <= 4) | |
1112 | break; | |
efc67e8e | 1113 | rv = sysfs_wait(state_fd, &delay); |
679eb882 N |
1114 | if (rv < 0 && errno != EINTR) |
1115 | break; | |
1116 | lseek(state_fd, 0, SEEK_SET); | |
1117 | } | |
1118 | if (rv < 0) | |
1119 | rv = 1; | |
1120 | else if (fping_monitor(sock) == 0 || | |
1121 | ping_monitor(mdi->text_version) == 0) { | |
1122 | /* we need to ping to close the window between array | |
1123 | * state transitioning to clean and the metadata being | |
1124 | * marked clean | |
1125 | */ | |
1126 | rv = 0; | |
1127 | } else | |
1128 | rv = 1; | |
1129 | if (rv && verbose) | |
e7b84f9d | 1130 | pr_err("Error waiting for %s to be clean\n", |
679eb882 N |
1131 | dev); |
1132 | ||
1133 | /* restore the original safe_mode_delay */ | |
1134 | sysfs_set_safemode(mdi, mdi->safe_mode_delay); | |
1135 | close(state_fd); | |
1136 | } | |
1137 | ||
1138 | sysfs_free(mdi); | |
1139 | close(fd); | |
1140 | ||
1141 | return rv; | |
1142 | } | |
1143 | #endif /* MDASSEMBLE */ |