Using blade servers with attached storage for compute nodes
My question is similar to question 49 on this site, but not the same.
Background: We want to deploy Openstack on blade servers and use attached storage for ephemeral disks on the compute node. We also want to also deploy Cinder (volume storage) on a blade server in the same way, using attached storage also for persistent volumes.
I'm aware that you can specify LVM as the ephemeral disk (or image type) and specify the LVM group to be used (according to the Openstack documentation on nova.conf).
Question: Would we mount the attached storage as an LVM volume (in an LVM group) on the compute node host OS and then just specify that LVM volume using libvirt_images_volume_group=GROUPNAME in nova.conf?
Are you interested in live migration also ? This may change the approach you want to take.