ext3 filesystem corruption - more info (in text)

[Andreas Dilger]

On Apr 13, 2006  16:40 -0400, Sev Binello wrote:
>Andreas Dilger wrote:
>>Do you run with write cache enabled on your device?  That can potentially
>>cause filesystem corruption even in the face of ext3 journaling, because
>>the journal atomicity guarantees are lost when the device reports a write
>>is complete on disk when it really isn't.
>> 
>>
>The raid system does run with write back cache enabled.
>I don't believe the actual drives have this enabled,  but I'd have to 
>check.
>
>But we didn't actually lose power on the raid or hosts
>just the connecting switches, so we lost all communication.
>Presumably, in this situation  the controller cache should have been 
>emptied Is my reasoning correct here ?

Correct.  If your RAID has w/b cache enabled, but is battery backed, you
should be OK.

Beyond this, I'm not sure what else you can look at.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.