[Moosefs-users] KVM Virtio issues?

[Deon C. <deo...@gm...>]

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