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Re: XFS and XEN

To: xfs@xxxxxxxxxxx
Subject: Re: XFS and XEN
From: Michael Monnerie <michael.monnerie@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 17 Feb 2009 15:00:39 +0100
In-reply-to: <20090217091124.GA7118@xxxxxxxxxxxxx>
"Christoph Hellwig" <hch@xxxxxxxxxxxxx> schrieb:
> I'm not even sure the Xen driver implements barriers.  I haven't done
> much with Xen, but with the default kvm/qemu config I can completely
> wreck ext3 and XFS filesystems.  If using these virtualization solutions
> make sure you do not cache the virtual block device in the host
> pagecache, and that in doubt the write cache of the disk is turned off
> as barriers most likely won't work through the virtualization stack.

How can I do that?

mfg zmi


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