Re: [CentOS] question on software raid

On 04/01/2011 05:32 PM, Jerry Geis wrote:

dmesg is not reporting any issues.

The /proc/mdstat looks fine. md0 : active raid1 sdb1[1] sda1[0] X blocks [2/2] [UU]

however /var/log/messages says:

smartd[3392] Device /dev/sda 20 offline uncorrectable sectors

The machine is running fine.. raid array looks good - what is up with smartd?

THanks,

Jerry

This means that you will be in trouble sooner or later.

Is there only sda1 on sda? If so, try

mdadm /dev/md0 --fail /dev/sda1 mdadm /dev/md0 --remove /dev/sda1 mdadm /dev/md0 --add /dev/sda1

which will end up overwriting the offline uncorrectable sectors. In most cases this fixes the disk. But you will have to monitor it carefully from now on.

HTH,

Kay