Open Stack

On Wed, Oct 24, 2012 at 08:56:26PM +0200, Daniel Vázquez wrote:
:Hi here!
:
:Can we create and use news logical volumes for own/custom use(out of
:openstack) on nova-volumes openstack LVM group, and use it beside
:openstack operational?
:IMO it's LVM and no problem, but it has openstack collateral consequences?

If you are talking about creating random logical volumes for
non-openstack use in the same volume group nova-volume or cinder is
using to create volumes (lv are in the same vg but don't otherwise
interact), yes you can do that without ocnfusing openstack or having
your volumes trampled.  For example only having one volume group and
using that for operating system partitions as well as volume-<foo>
volumes for cinder

I don't think it's a particularly good idea from an organizational
standpoint I'd rather have distinct vg's for each purpose so it is
clear which resources are operating system and which are data, but in
my environment (a private computing/research cloud with a small admin
group and 1k users in a few 10's of closely related tenents) it's
probably more an aesthetic than technical choice.  The larger and more
diverse your situation the stronger I'd argue for keeping them in
seperate VGs.

-Jon