[ovirt-users] On 3.6.6, tried doing a live VM storage migration... didn't work

[Markus Stockhausen]

I know of at least one live Disk Migration issue with Multi Disk VMs.

https://bugzilla.redhat.com/show_bug.cgi?id=1319400

Might be totally different but I must admit that this feature had several ups and downs the last years.

Markus

Am 26.05.2016 3:50 vorm. schrieb Christopher Cox <ccox at endlessnow.com>:
In our old 3.4 ovirt, I know I've migrated storage on live VMs and everything
seemed to work.

However on 3.6.6, I tried this and I saw the warning about moving storage on a
live VM (it wasn't doing much of anything) and I went ahead and migrated the
storage from one storage domain to another.   But when it was through, even
though the VM was still alive, when I tried to write to a virtual disk that was
part of the move, it paused the VM saying there wasn't enough storage.

I could unpause the VM, but in a few seconds, with things writing to the virtual
disk, again it was paused with the same out of space message.  Vdsm logs showed
the enospc return code... so it made sense, it's just that the VM shows plenty
of storage there.  Once I rebooted the VM, everything went back to normal.

So is moving storage for a live VM not supported?  I guess we got lucky in our
3.4 system (?)

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