[Openstack-operators] Running cinder with two Ceph backends (not possible)?

Robert van Leeuwen Robert.vanLeeuwen at spilgames.com
Wed Oct 2 08:09:16 UTC 2013


Hi,

We would like to run 2 separate Ceph clusters for our cloud. (Due to HA and performance reasons)
It is possible to set this up?
I'm trying in our dev environment (currently just one ceph cluster but with 2 volumes)

With just one backend it works fine but with 2 backends I get the following error:
ERROR [cinder.scheduler.filters.capacity_filter] Free capacity not set: volume node info collection broken
ERROR [cinder.scheduler.manager] Failed to schedule_create_volume: No valid host was found. 


Cinder config:
enabled_backends=ceph1,ceph2
[ceph1]
volume_driver=cinder.volume.drivers.rbd.RBDDriver
rbd_pool=volumes
rbd_user=volumes
rbd_secret_uuid=xxxxxxxxxxxxxxxx

[ceph2]
volume_driver=cinder.volume.drivers.rbd.RBDDriver
rbd_pool=volumes2
rbd_user=volumes2
rbd_secret_uuid=yyyyyyyyyyyyyyyy


Running it all on SL6.4.
Openstack Grizzly (RDO)
Ceph Dumpling (ceph repo)

Thx,
Robert van Leeuwen


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