[ovirt-users] Re: is disk reduce command while VM is active after snapshot deletion save?
On Wed, Nov 3, 2021 at 2:51 PM <christian.peater(a)gmx.de> wrote:
When creating a snapshot, the volume gets two lv extents (2GB) . But after deleting the
snapshot, the extents are kept and with every Snapshot creation the volume size
increases.
This is really annoying, especially when using snapshot for nightly backup. we are using
oVirt 4.3.10 and we can't upgrade to 4.4
I have read that to shrink the volume the disk reduce command is what helps here, but the
rest api documentation says, that this is only applicable while vm is not running. crazy
as i am, i have called the reduce command while the vm was running, and it seemed to work.
the volume has shrunk and the vm didn't crash.
it's actually blocked only
for the active volume of a running VM, I
suppose you did not run it on the active volume?
but it seems like the documentation needs to be fixed
But is it save to do so? and why isn't the reduce command is
called after deletion of a snapshot?
It actually is called, except when the active
layer participates in
the live merge (or the SD isn't block SD)