Repetitive RBD disk definitions
Hi,
I'm using libvirt 5.0.0 on a Ceph cluster. The VM disks are all from
the same Ceph pool, so all my <disk> elements are basically the same:
<disk type="network" device="disk">
<driver name="qemu" type="raw" cache="none"/>
<source protocol="rbd" name="vmdisks/VOLNAME">
<host name="x.y.z.1" port="6789"/>
<host name="x.y.z.2" port="6789"/>
<host name="x.y.z.3" port="6789"/>
</source>
<auth username="libvirt">
<secret type="ceph" usage="libvirt_key"/>
</auth>
<target dev="vdX"/>
</disk>
... apart from the VOLNAME and vdX words. Is there a way to factor out
(at least part of) the common stuff? This repetition isn't totally
unmanageable, just not pretty. Creating a libvirt storage pool seemed
like a good solution at first, but I couldn't find a way to
"instantiate" volumes in the domain XML (and defining them cluster-wide
would mean duplicating what Ceph does, which I'd rather avoid).
--
I'd be grateful for any ideas,
Feri.