Hi
Actually we use libvirt VM with ceph rbd pool for storage.
By default we want to have "disk cache=writeback" for all disks in libvirt.
In /etc/ceph/ceph.conf, we have "rbd cache = true" and for each VMs XML
we set "cache=writeback" for all disks in VMs configuration.
We want to use one ocfs2 volume on our rbd pool. For this volume we want
set cache=none. When we set cache=none in libvirt template for this
hosts, it doesn't work.
The only way that's work is when we set "rbd cache = false" in
/etc/ceph/ceph.conf.
How can I set cache=none just for one volume specifically without
modifing default settings in ceph.conf?
Regards,
Arnaud
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