Re: [Xen-users] Xen VMs on GFS volumes

[Nate Carlson <natecars@xxxxxxxxxxxxxxx>]

On Fri, 9 Dec 2005, Anders Bruun Olsen wrote:
> Since the root partitions for my virtual machines doesn't need to be 
> mounted in more than one place at a time, I guess I don't really need a 
> clustering filesystem on them. Am I correct? How about live migration, 
> is it okay to just have the blockdevice available on both machines at 
> the same time, or does that require a clustering filesystem?
> Again, my setup is with an iscsi storage box (an IBM DS300) which both 
> machines has access to. If I don't run a clustering filesystem and mount 
> the same device on both machines, I run into trouble (obviously). But I 
> am not sure if a partition containing a VM actually needs to be mounted 
> two places at the same time, or if it just really quickly unmounts on 
> the first dom0 and mounts it on the second?
What I'm doing is using CLVM on the Xen dom0's, and creating LV's 
(formatted as XFS) for each of the domU's. I then have a few GFS file 
systems (also LV's) that get shared between some of the domU's, but only 
ones that need access to them.
Works quite well.

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| nate carlson | natecars@xxxxxxxxxxxxxxx | http://www.natecarlson.com |
|       depriving some poor village of its idiot since 1981            |
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