On Sat, Jul 15, 2006 at 12:48:56PM +0200, Martin Steigerwald wrote:
> What are those intermittent IO errors? I googled but did not find a
> discussion of this change.
write barriers are enabled by default now, they have been for some
months (since the end of March)
> Does anyone have any hint as to why this may have been the case?
> Thing is that the system went down, the kernel crashed while it was
> in use.
usually in the case of a kernel crash the disks are able to ti flush
(unlike with power loss) so i wouldn't expect barriers or the lack of
them to affect things here
> I am suspecting that the kernel went down due to other instabilities
> and then XFS got corrupted by out of order writes.
yes, if writes are misordered and some are lost, then it's possible to
have a corrupt filesystem when you come back up