On 2012-12-06 20:48, Ruben S. Montero wrote:
Hi
It seems that this behavior is problematic. Let me elaborate on Simon
comment. As pointed out by Simon there are two similar VM operations:
You make more confusion here, because in the past I saw similar problem
when developing my own LVM driver. We are talking, that in delete action
on VM opennebula executes tm/delete and vmm/cancel actions in parallel
what causes problems, because lvm volumes could not be destroyed when in
use by xen VM. As a workaround my LVM driver waits in background until
it can delete LVM volume.
* delete, this is equivalent to kill -9 It is a hard kill of the VM.
It does not check anything and trigger cancellation/delete actions to
free the associated resources. It is supposed to be used when a VM is
stuck in any state.
* cancel, it cancels the VM and cleans the resources but checks and
synchro is in place.
Note that this synchronization problem is only for VM's in running.
This seems to be confusing, we are thinking of moving the delete
operation to the ADMIN set (so you need admin permissions to delete)
and so force users to use the safer cancel operation... Any thoughts?
At least it should be configurable.
Regards, Rolandas Naujikas
Ruben
On Thu, Dec 6, 2012 at 2:44 PM, Simon Boulet <[email protected]> wrote:
Hi,
On Wed, Dec 5, 2012 at 11:39 PM, cmcc.dylan <[email protected]> wrote:
Hi, everyone!
I'm develpment lxc driver for opennebula and i complete the basic
functions now, but i meet a problem as follows.
from the log, we can see opennbula execute "cancel" fistrly and then
execute "tm_delete.sh", But the result is cancel: Executed "virsh --connect
lxc:/// destroy lxc-5". after "tm_delete.sh".
I can confirm this behaviour too when sending the delete action to a VM. It
seems the VMM cancel and the TM delete actions are executed simultaneously
by OpenNebula. When sending the cancel action OpenNebula seems to properly
wait for the VMM cancel action to complete before calling TM delete.
Simon
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