On Sun, May 14, 2017 at 7:59 PM Troels Arvin <troels@arvin.dk> wrote:
Hello,

Fred Rolland wrote:
> You cannot put a storage domain to maintenance if you have running VMs
> using disks located in this domain.

OK.

Am I right about the following: A storage domain needs to be in
maintenance mode before a LUN may be removed from it?

Yes.
 
- And if so: This means that ovirt does not support online removal of a
LUN from a storage domain, even if there's sufficient free space in other
LUNs in the storage domain?

Yes, removing a lun from a storage domain require moving the storage
domain to maintenance.

If there is no space to remove a lun, you will not be able to remove it even
if the domain is in maintenance.

Nir