[Linux-cluster] ZEN with GFS

[Bernard Chew]

> -----Original Message-----
> From: linux-cluster-bounces at redhat.com [mailto:linux-cluster-
> bounces at redhat.com] On Behalf Of jr
> Sent: Wednesday, March 12, 2008 5:14 PM
> To: linux clustering
> Subject: RE: [Linux-cluster] ZEN with GFS
> 
> hi bernard,
> wow, 200MB for a bunch of domUs ;)
> but seriously, maybe it's a dm-multipath setting problem, i had kind
of
> the same (instead of having the guests filesystem images as files on a
> gfs volume i just have on lun per guest); during a failover some of
the
> guests would become instable or even lose control over their disks.
> my problem was that i forgot to set:
> 
> no_path_retry           queue
> 
> in the settings for my storage. since i did that the domUs survive
> multipath failovers nicely.
> regards,
> johannes
> 
> > Hi,
> >
> > Sorry for the confusion here. I was saying the failover of the MPIO
> > works nicely for the 1TB virtual disk (domU cluster) but not the
> 200MB
> > virtual disk (dom0 cluster) which contains all the virtual guests.
> >
> > As for the second part, I was saying such a setup allows the
failover
> of
> > the domU machines as they are stored in the central virtual disk.
The
> > failover here refers to using the RHEL cluster to control the
guests.
> >
> > But as the MPIO failover does not work nicely for the dom0 cluster,
I
> > may just keep the domU machines locally.
> >
> > Regards,
> > Bernard
> >
> >
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Oops.. some typo error there (its supposed to be 200G). 

Anyway not to hijack this thread, I shall try out the no_path_retry
setting in the multipath.conf and post the results in a separate thread
:)

Thanks for the tip!
Bernard