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RE: [Xen-users] tap:aio

To: "Grant McWilliams" <grantmasterflash@xxxxxxxxx>
Subject: RE: [Xen-users] tap:aio
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: 2008年12月31日 21:26:54 +1100
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Thread-topic: [Xen-users] tap:aio
> > Btw, it is better to use tap:aio or phy where the underlying device
> > is a LVM logical volume?
>
> Was that a question? :-)
Yes. s/it is/is it/ :)
> Use phy for LVM logical volumes and tap:aio if
> it's a file on ANY partition (LV or otherwise). I've done speed tests
with
> both LVs and diskfiles and the LVs are faster but they don't trounce
the
> tap:aio disk file like you'd think. In several tests the file was
equal to
> the LVM volume.
Thanks for the confirmation. I just tried doing the backup exec restore
using tap:aio instead of file, but the DomU hung almost immediately
(after about 500MB of restoring). Could be my GPLPV drivers...
James
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