[rhelv6-list] Best filesystem to store virtual machine disks on RHEL6
Phil Meyer
pmeyer at themeyerfarm.com
Thu Nov 18 18:15:17 UTC 2010
On 11/18/2010 09:55 AM, carlopmart wrote:
> Hi all,
>
> I have installed RHEL6 Server on my laptop to run several virtual
> machines. Which filesystem is best to store virtual machine disks in
> terms of performance: xfs, gfs2 or ext4?
>
> I prefer to use qemu img disks instead lvm volumes to simplify backup
> procedures.
>
> Thanks.
>
Are you storing your KVM guest file systems local to your laptop? The
mention of GFS2 threw me.
I can tell you from very extensive testing, that the very best network
based disk performance is from iscsi, vs GFS2 or NFS.
On my desktop I use btrfs for my home directory, and ext4 for everything
else. There is negligible difference in performance from a VM with its
disk image on ext4 or on btrfs.
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