[Users] oVirt 3.2.1 and clone from snapshot.... argh...!!!

[Gianluca Cecchi]

On Tue, Mar 19, 2013 at 5:52 PM,   wrote:
> I can create a snapshot, but how can I revert it. Need to has the VM off?

I confirm that also in my oVirt 3.2.1 when the VM is running the
"delete" is greyed out.
I successfully tested that if I shutdown it, then I can complete
snapshot deletion.
during deletion

iotop:
Total DISK READ:   31896.94 K/s | Total DISK WRITE:   30310.11 K/s
  PID  PRIO  USER     DISK READ DISK WRITE>  SWAPIN      IO    COMMAND
28654 idle vdsm     30555.40 K/s 30302.88 K/s  0.00 % 31.58 % qemu-img
convert -t none -f qco~88a-40db-a9fb-619a6655c858_MERGE
 2830 be/4 root        0.00 K/s   14.47 K/s  0.00 %  0.00 % libvirtd --listen
 3141 be/3 vdsm        0.00 K/s    1.32 K/s  0.00 %  0.00 % python
/usr/share/vdsm/vdsm
  875 be/3 root        0.00 K/s    0.00 K/s  0.00 %  0.27 % [jbd2/dm-12-8]
 2457 be/4 sanlock  1010.10 K/s    0.00 K/s  0.00 %  0.02 % sanlock
daemon -U sanlock -G sanlock

ps:
[root at f18ovn01 ~]# ps -ef| grep convert
vdsm     28654  3141  5 18:00 ?        00:00:06 /usr/bin/qemu-img
convert -t none -f qcow2
/rhev/data-center/5849b030-626e-47cb-ad90-3ce782d831b3/013bcc40-5f3d-4394-bd3b-971b14852654/images/43ca3bc4-fefc-43c5-8508-ad4d2599418b/77af271e-a88a-40db-a9fb-619a6655c858
-O raw /rhev/data-center/5849b030-626e-47cb-ad90-3ce782d831b3/013bcc40-5f3d-4394-bd3b-971b14852654/images/43ca3bc4-fefc-43c5-8508-ad4d2599418b/77af271e-a88a-40db-a9fb-619a6655c858_MERGE
root     29211 25304  0 18:02 pts/0    00:00:00 grep --color=auto convert

I don't know how oVirt 3.2.1 is positioned vs rhev 3.1 but I found this:

- rhevm 3.1 manual is wrong in my opinion at page 139 section 8.9.3
because in create VM from snapshot it says:
Ensure the status is Powered Down.
and I think this is not true
(possibly cut-n-paste from procedure 8.20 to 8.21 and forgetting to
leave off the power down thing...)

- rhevm 3.1 at page 141 section 8.9.4 procedure 8.22 is not clear
because it doesn't say if the VM has to be powered down for the
snapshot to be deleted or can be running....
any information for both RHEVM 3.1 and oVirt 3.2.1 and snapshot deletion?

Gianluca