Re: [Moosefs-users] KVM Virtio issues?

[Elliot F. <efi...@gm...>]

We use MooseFS for KVM VMs. We use virtio for Linux guests and IDE for
FreeBSD.  Have to use cache=writethrough for both.

On Wed, Apr 25, 2012 at 2:31 AM, Deon Cui <deo...@gm...> wrote:
> Hi,
>
> I am a bit of a new moose user, currently using moose as a simple smb share
> for backup storage. It does this job well and I have no complaints. We're
> currently running SL6.2 master servers and freebsd 9 zfs pools for chunk
> servers. Performance is not an issue because bulk data and consistency is
> more important in this use case.
>
> However I am looking into creating a unified storage space for KVM virtual
> machines in a separate moosefs cluster. I've tried to do my research and one
> topic which has been mentioned but not elaborated on is the compatibility
> with the virtio driver?
> When using moose with kvm does the IDE driver provide better performance
> than virtio?
>
> Another issue I have seen is related to fuse and it not previously
> supporting directio, which prevented kvm guests using cache=none from
> starting. Are these two issues related?
>
> If they are related then I have found information that O_DIRECT support is
> coming to fuse soon, when it does will this issue be resolved?
>
> Thanks
> Deon
>
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