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

[Maor Lipchuk]

Adding Timothy to the thread.

Remove live snapshot is not supported yet, but it's in the roadmap.
For now VM must be shut down before removing a snapshot.

On 03/19/2013 07:11 PM, Gianluca Cecchi wrote:
> 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?
Thanks for pointing that out,
Timothy, perhaps you know who can help with that issue?
> 
> Gianluca
>