[K12OSN] RAID1 failure: need help
Timothy Legge
tlegge at rogers.com
Sat Oct 1 02:21:29 UTC 2005
Les Mikesell wrote:
> On Fri, 2005-09-30 at 21:03, Timothy Legge wrote:
>
>
>>>Assuming you can shut the machine down, swap in a good drive for
>>>sdb - preferably one with no linux filesystem labels or raid
>>>partitions that might confuse things on the initial boot.
>>
>>When I had this occur, it was a case of a power outage causing the disks
>>to break the raid set. I reviewed everything including running the
>>manufacturers tool to determine whether there was a drive issue. There
>>was not, and I have been running with raid for a month or more since I
>>re added the missing partitions and I have not had any further issue.
>
>
> That can happen, but the 'dmesg' log posted showed hardware errors
> reading sectors. I'd at least want to low-level it before trying
> again and it's pretty likely to be a bad drive.
> smartctl -a /dev/sdb might tell you how bad.
I do remember seeing raid1: Disk failure on sdb1, disabling device when
I had the issue and some other nasty stuff unfortunately, my old logs
are gone.
I knew my raid was out of sink for a week or more and I did a update of
grub anyway. Not a good idea :-( I had to physically switch the drives
in order to boot off the "good drive". That got me worried and I did
all the tests the hard drive manufactures tool allowed and as I said
things have been fine.
While I was pretty sure initially I had a bad drive I just could not
prove it and once the raid set rebuilt itself I was fine. If Robert is
lucky he may get similar results.
Tim
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