Arien,
On Wed, May 03, 2006 at 09:34:31AM +0200, Ari?n Huisken wrote:
> Hi list,
>
> On all servers I have sw raid running (mostly mirror on TSL 2.2)
> without any problems, but on two servers a partition is marked als F
> and kicked out of the raidset.
>
> Normally this would mean the disk is bad and should be replaced. But...
> in this two occasions, a badblock and speed test shows nothing wrong
> with the disk, also no warnings in the logs.
>
> I remove the partition out of the set, the add it again, it resyncs the
> set and all runs well for several months, then the same partition is
> kicked out of the set again.
>
> The problem is, if I replace the disk and sent it to my supplier for
> warranty replacement, he claims the disk is good ;(
>
> Is the disk really bad, or could this be something different?
Something must show up in syslog and/or kernel messages ('dmesg').
AFAIK a partition can only be marked bad if there has been some kind
of I/O error. Is this IDE or SCSI? I've had that kind of situation
with a noisy SCSI bus, probably improperly terminated. This would
cause very transient SCSI errors and the disk was being kicked out of
the RAID set. However I could find the corresponding SCSI errors
in 'dmesg' output.
I use software RAID on TSL 2.2 on quite a few boxes here and I've
never seen it flagging a partition as faulty without a good reason.
Greets,
_Alain_
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