On 09/04/2013 09:46 AM, Mike Dawson wrote:
There are currently a few metavariables available for use in ceph.conf: http://ceph.com/docs/master/rados/configuration/ceph-conf/#metavariables In addition to those listed in that document, $pid was added in Bobtail. That allows me to get RBD admin sockets for libvirt/qemu guests by specifying [client] admin socket = /var/run/ceph/rbd-$pid.asok in /etc/ceph/ceph.conf. That works well for VMs with a single volume, but it does not work for VMs with multiple volumes. With multiple volumes, the admin only lists data on the last volume specified, leaving me unable to monitor stats on any volumes other than the last. I imagine you could specify a unique admin socket for each volume on the command-line that libvirt uses to spawn qemu, but that seems like a pain. Is it possible instead to add a metavariable that would expand to the image name? This way, my ceph.conf would look like [client] admin socket = /var/run/ceph/$imagename.asok and I would end up with admin sockets like: /var/run/ceph/rbd-volume-0025b693-6230-443e-ad6a-3aa43efdd648.asok /var/run/ceph/rbd-volume-009228f3-b8d7-4f3c-8458-0cdbd4809dc6.asok # rbd -p volumes ls volume-0025b693-6230-443e-ad6a-3aa43efdd648 volume-009228f3-b8d7-4f3c-8458-0cdbd4809dc6 I'd be happy to provide a patch if someone could give me sufficient guidance on how/where to add this functionality.
Created a feature request in the tracker for this: http://tracker.ceph.com/issues/6228 Mark -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
