All:
For a while our strategy was to use NRPE2+a custom nagios check
(check_raid_fbsdgmirror -- ugly as hell Perl but which I can make
available to the public).
However, this morning a drive in a Dell PE1850 (one without a PERC4
controller) started erroring. It has just regular old (bad) mpt(4)
controller.
The problem is that gmirror(4) never marked the drive as failed.
I'd have to tear through the code to find where the logic is for
automatic demotion of a failed mirror.
Either way, the original thinking behind the Nagios pluging check, was
that gmirror(4) would have some threshold of failed attempts to write/read
from a provider disk should lead to flagging a provider as "DEGRADED"
Its entirely possible that we never had a chance to test it.
Now I have to go back and re-visit all of that.
~BAS
On Wed, 20 Sep 2006, Alex Zbyslaw wrote:
Robin Becker wrote:
After using Dru Lavigne's excellent article http://tinyurl.com/da66a about
Raid-1 I have a full Raid-1 mirror on a new rack server. I'm wondering if
anyone can tell me how best to monitor the hardware status to detect
imminent failure of one of the disks? Do I use something like smartctl in a
cron or what?
Assuming that the disks support SMART then just read the man page for smartd.
No need for cron. You can also schedule "short" and "long" tests to run in
off hours. smartmontools is easy to uninstall if it doesn't work for you.
However, this will tell you that a disk is failing (or failed) which is not
quite the same as array status. An array (theoretically) might be
sub-optimal for non-SMART reasons. Someone familiar with gmirror will have
to answer that bit... but gmirror status -s looks from the man page like it
might be interesting and *that* could be run from cron and parsed to weed out
"status OK results".
--Alex
_______________________________________________
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
l8*
-lava (Brian A. Seklecki - Pittsburgh, PA, USA)
http://www.spiritual-machines.org/
"...from back in the heady days when "helpdesk" meant nothing, "diskquota"
meant everything, and lives could be bought and sold for a couple of pages
of laser printout - and frequently were."
_______________________________________________
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
