/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
#include <sys/wait.h>
#include <sys/signal.h>
#include <values.h>
+#include <syslog.h>
-static void alert(char *event, char *dev, char *disc, char *mailaddr, char *cmd);
+static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mailfrom,
+ char *cmd, int dosyslog);
static char *percentalerts[] = {
"RebuildStarted",
"Rebuild80",
};
+/* The largest number of disks current arrays can manage is 384
+ * This really should be dynamically, but that will have to wait
+ * At least it isn't MD_SB_DISKS.
+ */
+#define MaxDisks 384
int Monitor(mddev_dev_t devlist,
char *mailaddr, char *alert_cmd,
int period, int daemonise, int scan, int oneshot,
- char *config, int test)
+ int dosyslog, char *config, int test, char* pidfile)
{
/*
* Every few seconds, scan every md device looking for changes
char *spare_group;
int active, working, failed, spare, raid;
int expected_spares;
- int devstate[MD_SB_DISKS];
- int devid[MD_SB_DISKS];
+ int devstate[MaxDisks];
+ int devid[MaxDisks];
int percent;
struct state *next;
} *statelist = NULL;
int finished = 0;
struct mdstat_ent *mdstat = NULL;
+ char *mailfrom = NULL;
if (!mailaddr) {
mailaddr = conf_get_mailaddr(config);
fprintf(stderr, Name ": Monitor using email address \"%s\" from config file\n",
mailaddr);
}
+ mailfrom = conf_get_mailfrom(config);
+
if (!alert_cmd) {
alert_cmd = conf_get_program(config);
if (alert_cmd && ! scan)
if (daemonise) {
int pid = fork();
if (pid > 0) {
- printf("%d\n", pid);
+ if (!pidfile)
+ printf("%d\n", pid);
+ else {
+ FILE *pid_file;
+ pid_file=fopen(pidfile, "w");
+ if (!pid_file)
+ perror("cannot create pid file");
+ else {
+ fprintf(pid_file,"%d\n", pid);
+ fclose(pid_file);
+ }
+ }
return 0;
}
if (pid < 0) {
} else {
mddev_dev_t dv;
for (dv=devlist ; dv; dv=dv->next) {
+ mddev_ident_t mdlist = conf_get_ident(config, dv->devname);
struct state *st = malloc(sizeof *st);
if (st == NULL)
continue;
st->percent = -2;
st->expected_spares = -1;
st->spare_group = NULL;
+ if (mdlist) {
+ st->expected_spares = mdlist->spare_disks;
+ if (mdlist->spare_group)
+ st->spare_group = strdup(mdlist->spare_group);
+ }
statelist = st;
}
}
if (mdstat)
free_mdstat(mdstat);
- mdstat = mdstat_read();
+ mdstat = mdstat_read(oneshot?0:1, 0);
for (st=statelist; st; st=st->next) {
mdu_array_info_t array;
- struct mdstat_ent *mse;
+ struct mdstat_ent *mse = NULL, *mse2;
char *dev = st->devname;
int fd;
unsigned int i;
if (test)
- alert("TestMessage", dev, NULL, mailaddr, alert_cmd);
+ alert("TestMessage", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog);
fd = open(dev, O_RDONLY);
if (fd < 0) {
if (!st->err)
alert("DeviceDisappeared", dev, NULL,
- mailaddr, alert_cmd);
+ mailaddr, mailfrom, alert_cmd, dosyslog);
/* fprintf(stderr, Name ": cannot open %s: %s\n",
dev, strerror(errno));
*/ st->err=1;
if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
if (!st->err)
alert("DeviceDisappeared", dev, NULL,
- mailaddr, alert_cmd);
+ mailaddr, mailfrom, alert_cmd, dosyslog);
/* fprintf(stderr, Name ": cannot get array info for %s: %s\n",
dev, strerror(errno));
*/ st->err=1;
close(fd);
continue;
}
- if (array.level != 1 && array.level != 5 && array.level != -4) {
+ if (array.level != 1 && array.level != 5 && array.level != -4 &&
+ array.level != 6 && array.level != 10) {
if (!st->err)
alert("DeviceDisappeared", dev, "Wrong-Level",
- mailaddr, alert_cmd);
+ mailaddr, mailfrom, alert_cmd, dosyslog);
st->err = 1;
close(fd);
continue;
struct stat stb;
if (fstat(fd, &stb) == 0 &&
(S_IFMT&stb.st_mode)==S_IFBLK) {
- if (MINOR(stb.st_rdev) == 9)
- st->devnum = MINOR(stb.st_rdev);
+ if (major(stb.st_rdev) == MD_MAJOR)
+ st->devnum = minor(stb.st_rdev);
else
- st->devnum = -1- (MINOR(stb.st_rdev)>>6);
+ st->devnum = -1- (minor(stb.st_rdev)>>6);
}
}
- for (mse = mdstat ; mse ; mse=mse->next)
- if (mse->devnum == st->devnum)
- mse->devnum = MAXINT; /* flag it as "used" */
+ for (mse2 = mdstat ; mse2 ; mse2=mse2->next)
+ if (mse2->devnum == st->devnum) {
+ mse2->devnum = MAXINT; /* flag it as "used" */
+ mse = mse2;
+ }
if (st->utime == array.utime &&
st->failed == array.failed_disks &&
mse && /* is in /proc/mdstat */
mse->pattern && strchr(mse->pattern, '_') /* degraded */
)
- alert("DegradedArray", dev, NULL, mailaddr, alert_cmd);
+ alert("DegradedArray", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog);
if (st->utime == 0 && /* new array */
st->expected_spares > 0 &&
array.spare_disks < st->expected_spares)
- alert("SparesMissing", dev, NULL, mailaddr, alert_cmd);
+ alert("SparesMissing", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog);
if (mse &&
st->percent == -1 &&
mse->percent >= 0)
- alert("RebuildStarted", dev, NULL, mailaddr, alert_cmd);
+ alert("RebuildStarted", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog);
if (mse &&
st->percent >= 0 &&
mse->percent >= 0 &&
(mse->percent / 20) > (st->percent / 20))
alert(percentalerts[mse->percent/20],
- dev, NULL, mailaddr, alert_cmd);
+ dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog);
if (mse &&
mse->percent == -1 &&
st->percent >= 0)
- alert("RebuildFinished", dev, NULL, mailaddr, alert_cmd);
+ alert("RebuildFinished", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog);
if (mse)
st->percent = mse->percent;
-
- for (i=0; i<MD_SB_DISKS; i++) {
+
+ for (i=0; i<MaxDisks; i++) {
mdu_disk_info_t disc;
int newstate=0;
int change;
char *dv = NULL;
disc.number = i;
- if (ioctl(fd, GET_DISK_INFO, &disc)>= 0) {
+ if (i > array.raid_disks + array.nr_disks) {
+ newstate = 0;
+ disc.major = disc.minor = 0;
+ } else if (ioctl(fd, GET_DISK_INFO, &disc)>= 0) {
newstate = disc.state;
- dv = map_dev(disc.major, disc.minor);
- } else if (mse && mse->pattern && i < strlen(mse->pattern))
+ dv = map_dev(disc.major, disc.minor, 1);
+ } else if (mse && mse->pattern && i < strlen(mse->pattern)) {
switch(mse->pattern[i]) {
case 'U': newstate = 6 /* ACTIVE/SYNC */; break;
case '_': newstate = 0; break;
}
+ disc.major = disc.minor = 0;
+ }
+ if (dv == NULL && st->devid[i])
+ dv = map_dev(major(st->devid[i]),
+ minor(st->devid[i]), 1);
change = newstate ^ st->devstate[i];
if (st->utime && change && !st->err) {
if (i < (unsigned)array.raid_disks &&
((st->devstate[i]&change)&(1<<MD_DISK_ACTIVE)) ||
((st->devstate[i]&change)&(1<<MD_DISK_SYNC)))
)
- alert("Fail", dev, dv, mailaddr, alert_cmd);
+ alert("Fail", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog);
else if (i >= (unsigned)array.raid_disks &&
(disc.major || disc.minor) &&
- st->devid[i] == MKDEV(disc.major, disc.minor) &&
+ st->devid[i] == makedev(disc.major, disc.minor) &&
((newstate&change)&(1<<MD_DISK_FAULTY))
)
- alert("FailSpare", dev, dv, mailaddr, alert_cmd);
+ alert("FailSpare", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog);
else if (i < (unsigned)array.raid_disks &&
(((st->devstate[i]&change)&(1<<MD_DISK_FAULTY)) ||
((newstate&change)&(1<<MD_DISK_ACTIVE)) ||
((newstate&change)&(1<<MD_DISK_SYNC)))
)
- alert("SpareActive", dev, dv, mailaddr, alert_cmd);
+ alert("SpareActive", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog);
}
st->devstate[i] = disc.state;
- st->devid[i] = MKDEV(disc.major, disc.minor);
+ st->devid[i] = makedev(disc.major, disc.minor);
}
close(fd);
st->active = array.active_disks;
free(st);
continue;
}
+ close(fd);
st->utime = 0;
st->next = statelist;
st->err = 1;
st->spare_group = NULL;
st->expected_spares = -1;
statelist = st;
- alert("NewArray", st->devname, NULL, mailaddr, alert_cmd);
+ alert("NewArray", st->devname, NULL, mailaddr, mailfrom, alert_cmd, dosyslog);
new_found = 1;
}
}
if (fd2>=0) close(fd2);
continue;
}
- for (d=st2->raid; d<MD_SB_DISKS; d++) {
+ for (d=st2->raid; d < MaxDisks; d++) {
if (st2->devid[d] > 0 &&
st2->devstate[d] == 0) {
dev = st2->devid[d];
(unsigned long)dev) == 0) {
if (ioctl(fd1, HOT_ADD_DISK,
(unsigned long)dev) == 0) {
- alert("MoveSpare", st->devname, st2->devname, mailaddr, alert_cmd);
+ alert("MoveSpare", st->devname, st2->devname, mailaddr, mailfrom, alert_cmd, dosyslog);
close(fd1);
close(fd2);
break;
if (oneshot)
break;
else
- sleep(period);
+ mdstat_wait(period);
}
test = 0;
}
+ if (pidfile)
+ unlink(pidfile);
return 0;
}
-static void alert(char *event, char *dev, char *disc, char *mailaddr, char *cmd)
+static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mailfrom, char *cmd,
+ int dosyslog)
{
+ int priority;
+
if (!cmd && !mailaddr) {
time_t now = time(0);
if (mailaddr &&
(strncmp(event, "Fail", 4)==0 ||
strncmp(event, "Test", 4)==0 ||
+ strncmp(event, "Spares", 6)==0 ||
strncmp(event, "Degrade", 7)==0)) {
FILE *mp = popen(Sendmail, "w");
if (mp) {
+ FILE *mdstat;
char hname[256];
gethostname(hname, sizeof(hname));
signal(SIGPIPE, SIG_IGN);
- fprintf(mp, "From: " Name " monitoring <root>\n");
+ if (mailfrom)
+ fprintf(mp, "From: %s\n", mailfrom);
+ else
+ fprintf(mp, "From: " Name " monitoring <root>\n");
fprintf(mp, "To: %s\n", mailaddr);
fprintf(mp, "Subject: %s event on %s:%s\n\n", event, dev, hname);
fprintf(mp, "It could be related to component device %s.\n\n", disc);
fprintf(mp, "Faithfully yours, etc.\n");
+
+ mdstat = fopen("/proc/mdstat", "r");
+ if (mdstat) {
+ char buf[8192];
+ int n;
+ fprintf(mp, "\nP.S. The /proc/mdstat file current contains the following:\n\n");
+ while ( (n=fread(buf, 1, sizeof(buf), mdstat)) > 0)
+ fwrite(buf, 1, n, mp);
+ fclose(mdstat);
+ }
fclose(mp);
}
}
- /* FIXME log the event to syslog maybe */
+
+ /* log the event to syslog maybe */
+ if (dosyslog) {
+ /* Log at a different severity depending on the event.
+ *
+ * These are the critical events: */
+ if (strncmp(event, "Fail", 4)==0 ||
+ strncmp(event, "Degrade", 7)==0 ||
+ strncmp(event, "DeviceDisappeared", 17)==0)
+ priority = LOG_CRIT;
+ /* Good to know about, but are not failures: */
+ else if (strncmp(event, "Rebuild", 7)==0 ||
+ strncmp(event, "MoveSpare", 9)==0 ||
+ strncmp(event, "Spares", 6) != 0)
+ priority = LOG_WARNING;
+ /* Everything else: */
+ else
+ priority = LOG_INFO;
+
+ if (disc)
+ syslog(priority, "%s event detected on md device %s, component device %s", event, dev, disc);
+ else
+ syslog(priority, "%s event detected on md device %s", event, dev);
+ }
}
projects / thirdparty / mdadm.git / blobdiff