On Tue, 14 Mar 2006, Fajar Priyanto wrote:
On Tuesday 14 March 2006 11:32 am, Sudev Barar wrote:
IMHO on md1 component sdb2 of raid is failing. Try rebuild using mdadm. First remove the raid component sdb2 from md1 and then add it back again. Some times the raid parity fails due to improper shutdowns and when you re-build it is restored properly. If it does not it is likely your disk is developing errors. Be aware! Carefully man mdadm for details before you do anything.
I apologize. I guess the panic hit me :):)
Fortunately, after I remove the device: mdadm /dev/md1 -r /dev/sdb2
And then re-added it: mdadm /dev/md1 -a /dev/sdb2
It's rebuilding again. Pheew.. my first failed RAID event.
If this is a normal SCSI disk (ie. not SATA), I would use smartctl to check if this disk has errors.
smartctl -a /dev/sdb
And if you weren't already running smartd, now is a good time to check the smartd configuration and verify it has all disks configured as well :)
[dag@lxrh002 dag]# cat /etc/smartd.conf /dev/hda -H -m root@localhost.localdomain /dev/hdc -H -m root@localhost.localdomain
and then enable it:
chkconfig smart on service smart start
This will make sure you won't get any additional sudden surprises.
Kind regards, -- dag wieers, dag@wieers.com, http://dag.wieers.com/ -- [all I want is a warm bed and a kind word and unlimited power]