Hi Neil,
I recently setup mdadm to monitor my md RAIDs and text message my
cellphone in the event of a device failure. I found that the reports
were too verbose to easily read on my phone.
--textmsg, -T makes the emails mdadm generates shorter to be read on
mobile devices.
--
Ross Vandegrift
ross@xxxxxxxxxxxx
"The good Christian should beware of mathematicians, and all those who
make empty prophecies. The danger already exists that the mathematicians
have made a covenant with the devil to darken the spirit and to confine
man in the bonds of Hell."
--St. Augustine, De Genesi ad Litteram, Book II, xviii, 37
diff -ur mdadm-2.0/Monitor.c mdadm-2.0-ross/Monitor.c
--- mdadm-2.0/Monitor.c 2005-07-06 19:19:53.000000000 -0400
+++ mdadm-2.0-ross/Monitor.c 2005-11-12 17:49:53.000000000 -0500
@@ -34,7 +34,8 @@
#include <sys/signal.h>
#include <values.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 *cmd,
+ int textmsg);
static char *percentalerts[] = {
"RebuildStarted",
@@ -46,7 +47,7 @@
int Monitor(mddev_dev_t devlist,
char *mailaddr, char *alert_cmd,
- int period, int daemonise, int scan, int oneshot,
+ int period, int daemonise, int scan, int oneshot, int textmsg,
char *config, int test, char* pidfile)
{
/*
@@ -212,12 +213,13 @@
unsigned int i;
if (test)
- alert("TestMessage", dev, NULL, mailaddr, alert_cmd);
+ alert("TestMessage", dev, NULL, mailaddr,
+ alert_cmd, textmsg);
fd = open(dev, O_RDONLY);
if (fd < 0) {
if (!st->err)
alert("DeviceDisappeared", dev, NULL,
- mailaddr, alert_cmd);
+ mailaddr, alert_cmd, textmsg);
/* fprintf(stderr, Name ": cannot open %s: %s\n",
dev, strerror(errno));
*/ st->err=1;
@@ -226,7 +228,7 @@
if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
if (!st->err)
alert("DeviceDisappeared", dev, NULL,
- mailaddr, alert_cmd);
+ mailaddr, alert_cmd, textmsg);
/* fprintf(stderr, Name ": cannot get array info for %s: %s\n",
dev, strerror(errno));
*/ st->err=1;
@@ -237,7 +239,7 @@
array.level != 6 && array.level != 10) {
if (!st->err)
alert("DeviceDisappeared", dev, "Wrong-Level",
- mailaddr, alert_cmd);
+ mailaddr, alert_cmd, textmsg);
st->err = 1;
close(fd);
continue;
@@ -274,27 +276,31 @@
mse && /* is in /proc/mdstat */
mse->pattern && strchr(mse->pattern, '_') /* degraded */
)
- alert("DegradedArray", dev, NULL, mailaddr, alert_cmd);
+ alert("DegradedArray", dev, NULL, mailaddr,
+ alert_cmd, textmsg);
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,
+ alert_cmd, textmsg);
if (mse &&
st->percent == -1 &&
mse->percent >= 0)
- alert("RebuildStarted", dev, NULL, mailaddr, alert_cmd);
+ alert("RebuildStarted", dev, NULL, mailaddr,
+ alert_cmd, textmsg);
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, alert_cmd, textmsg);
if (mse &&
mse->percent == -1 &&
st->percent >= 0)
- alert("RebuildFinished", dev, NULL, mailaddr, alert_cmd);
+ alert("RebuildFinished", dev, NULL, mailaddr,
+ alert_cmd, textmsg);
if (mse)
st->percent = mse->percent;
@@ -320,19 +326,19 @@
((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, alert_cmd, textmsg);
else if (i >= (unsigned)array.raid_disks &&
(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, alert_cmd, textmsg);
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, alert_cmd, textmsg);
}
st->devstate[i] = disc.state;
st->devid[i] = makedev(disc.major, disc.minor);
@@ -378,7 +384,8 @@
st->spare_group = NULL;
st->expected_spares = -1;
statelist = st;
- alert("NewArray", st->devname, NULL, mailaddr, alert_cmd);
+ alert("NewArray", st->devname, NULL,
+ mailaddr, alert_cmd, textmsg);
new_found = 1;
}
}
@@ -419,7 +426,7 @@
(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, alert_cmd, textmsg);
close(fd1);
close(fd2);
break;
@@ -445,7 +452,8 @@
}
-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 *cmd,
+ int textmsg)
{
if (!cmd && !mailaddr) {
time_t now = time(0);
@@ -478,16 +486,24 @@
fprintf(mp, "To: %s\n", mailaddr);
fprintf(mp, "Subject: %s event on %s:%s\n\n", event, dev, hname);
- fprintf(mp, "This is an automatically generated mail message from " Name "\n");
- fprintf(mp, "running on %s\n\n", hname);
+ if (!textmsg) {
+ fprintf(mp, "This is an automatically generated mail message from " Name "\n");
+ fprintf(mp, "running on %s\n\n", hname);
- fprintf(mp, "A %s event had been detected on md device %s.\n\n", event, dev);
+ fprintf(mp, "A %s event had been detected on md device %s.\n\n", event, dev);
- if (disc)
- fprintf(mp, "It could be related to component device %s.\n\n", disc);
+ if (disc)
+ fprintf(mp, "It could be related to component device %s.\n\n", disc);
- fprintf(mp, "Faithfully yours, etc.\n");
- fclose(mp);
+ fprintf(mp, "Faithfully yours, etc.\n");
+ fclose(mp);
+ }
+ else {
+ fprintf(mp, "%s event from %s", event, dev);
+ if (disc)
+ fprintf(mp, " on %s", disc);
+ fprintf(mp, ".\n\n");
+ }
}
}
diff -ur mdadm-2.0/ReadMe.c mdadm-2.0-ross/ReadMe.c
--- mdadm-2.0/ReadMe.c 2005-08-25 03:17:08.000000000 -0400
+++ mdadm-2.0-ross/ReadMe.c 2005-11-12 17:51:49.000000000 -0500
@@ -91,7 +91,7 @@
* At the time if writing, there is only minimal support.
*/
-char short_options[]="-ABCDEFGQhVXvqb::c:i:l:p:m:n:x:u:c:d:z:U:sa::rfRSow1te:";
+char short_options[]="-ABCDEFGQhVXvqb::c:i:l:p:m:n:x:u:c:d:z:U:sa::rfRSow1tTe:";
struct option long_options[] = {
{"manage", 0, 0, '@'},
{"misc", 0, 0, '#'},
@@ -169,6 +169,7 @@
{"daemonize", 0, 0, 'f'},
{"oneshot", 0, 0, '1'},
{"pid-file", 1, 0, 'i'},
+ {"textmsg", 0, 0, 'T'},
{0, 0, 0, 0}
};
@@ -453,6 +454,7 @@
" --pid-file= -i : In daemon mode write pid to specified file instead of stdout\n"
" --oneshot -1 : Check for degraded arrays, then exit\n"
" --test -t : Generate a TestMessage event against each array at startup\n"
+" --textmsg -T : Keep emails terse, for text messaging mobile devices\n"
;
char Help_grow[] =
diff -ur mdadm-2.0/mdadm.c mdadm-2.0-ross/mdadm.c
--- mdadm-2.0/mdadm.c 2005-08-16 01:42:21.000000000 -0400
+++ mdadm-2.0-ross/mdadm.c 2005-11-12 17:31:42.000000000 -0500
@@ -93,6 +93,7 @@
struct supertype *ss = NULL;
int writemostly = 0;
int re_add = 0;
+ int textmsg = 0;
int copies;
@@ -664,6 +665,9 @@
case O(MONITOR,'t'): /* test */
test = 1;
continue;
+ case O(MONITOR,'T'): /* text message mode for mobile devices */
+ textmsg = 1;
+ continue;
/* now the general management options. Some are applicable
* to other modes. None have arguments.
@@ -1104,7 +1108,8 @@
break;
}
rv= Monitor(devlist, mailaddr, program,
- delay?delay:60, daemonise, scan, oneshot, configfile, test, pidfile);
+ delay?delay:60, daemonise, scan, oneshot, textmsg,
+ configfile, test, pidfile);
break;
case GROW:
diff -ur mdadm-2.0/mdadm.h mdadm-2.0-ross/mdadm.h
--- mdadm-2.0/mdadm.h 2005-08-26 00:49:24.000000000 -0400
+++ mdadm-2.0-ross/mdadm.h 2005-11-12 17:31:25.000000000 -0500
@@ -257,7 +257,7 @@
struct supertype *forcest);
extern int Monitor(mddev_dev_t devlist,
char *mailaddr, char *alert_cmd,
- int period, int daemonise, int scan, int oneshot,
+ int period, int daemonise, int scan, int oneshot, int textmsg,
char *config, int test, char *pidfile);
extern int Kill(char *dev, int force);
-
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