On Thu, Sep 27, 2012 at 11:08 AM, Ayal Baron <abaron@redhat.com> wrote:
This looks like an LVM issue. Have you tried deactivating the VG before pvresize?
I have not, but I don't think I'll bother playing with that any more since there is a more accepted way of growing that has no significant down side and leaves open the potential for more functionality. Good to know that I should not have to make the change.
I should mention that the host is running is a minimal install of CentOS 6.3, updated, and then tweaked by oVirt. Perhaps there is some other package that enables this functionality?
> However, as I read this email, it occurred that some other things
> might not be equal. Specifically, using multiple LUNs could provide
> a means of shrinking the storage domain in the future. LVM provides
> a simple means to remove a PV from a VG, but does the engine support
> this in the CLI or GUI? That is, if the a storage domain has
> multiple LUNs in it, can those be removed at a later date?
Does this mean it is in the works? If not, where could I put in such feature request?
Certainly, I have no pressing need of this, but it seems like a fairly simple thing to implement since I have done it so easily in the past with a just a couple of commands outside of an oVirt environment. I believe the primary purpose of the LVM functionality was to enable removal of dying PVs before they take out an entire VG. No reason it would not work just as well to remove a healthy PV. It can take a long time to move all the extents off the PV requested, but there is command to show the progress, so it would also be easy to wrap that in to the GUI.