Re: [Evms-devel] EVMS + XFS + NFS + Snapshot problem

[Kevin C. <kev...@us...>]

Hi Martin,

On Wed June 15 2005 10:25 am, Martin Schaff=F6ner wrote:
> On Wednesday 15 June 2005 12:13, Martin Schaff=F6ner wrote:
> > Well, I am giving up on this one. The SLES9 SP2 RC2 kernel does not fix
> > my problem, and with the mainline kernel on the server nfs-clients cann=
ot
> > lock files, so certain services which we rely on don't run.
>
> So, I did not give up. Locking is still not okay, but I found a workaround
> which _should_ not have any side effects. The kernel now is 2.6.11.12 and
> did not (yet) exhibit the failure. I cross my fingers.
>
> But again: Can anybody tell me what those two bugs in the SuSE kernel
> mentioned earlier are about?

Novell bug 75941 is about the lvextend command hanging while running on an =
XFS=20
volume under load, but it applies equally to snapshots. It involved a simpl=
e=20
fix to the VFS code that "freezes" filesystems when requested by the=20
block-layer. The patch was added during the SLES9-SP2 beta period.

Novell bug 62032 is about hangs caused by xfs_freeze, and involved the same=
=20
area of code as 75941.

Were you able to gather any information about the cause of the "sporadic"=20
hangs you still got with the SP2-RC2 kernel?

=2D-=20
Kevin Corry
kev...@us...
http://www.ibm.com/linux/
http://evms.sourceforge.net/