10:02 a.m.
Hi there,
I'm running KVM under Openstack .
When I give virsh list command, I see some VM in NON persistent state.
What does it mean? How can I move it to a persisten state ?
I found that I cannot make a snapshot, from Openstack , of a machine
which is in a NON PERSISTENT state.
Regards
Fiorenza
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11:49 a.m.
On 23.03.2015 16:02, Fiorenza Meini wrote:
Hi there,
I'm running KVM under Openstack .
When I give virsh list command, I see some VM in NON persistent state.
What does it mean? How can I move it to a persisten state ?
You can do that by running:
virsh dumpxml $dom > dom.xml && virsh define dom.xml
I found that I cannot make a snapshot, from Openstack , of a machine
which is in a NON PERSISTENT state.
However, I don't think it's a good idea to go behind OpenStack's back
and change things.
Michal
3:09 p.m.
On Mon, Mar 23, 2015 at 05:49:36PM +0100, Michal Privoznik wrote:
On 23.03.2015 16:02, Fiorenza Meini wrote:
> Hi there,
> I'm running KVM under Openstack .
>
> When I give virsh list command, I see some VM in NON persistent state.
> What does it mean? How can I move it to a persisten state ?
You can do that by running:
virsh dumpxml $dom > dom.xml && virsh define dom.xml
>
> I found that I cannot make a snapshot, from Openstack , of a machine
> which is in a NON PERSISTENT state.
However, I don't think it's a good idea to go behind OpenStack's back
and change things.
Michal is totally right, it gets really messy.
If you have a live or offline Nova instance, and you're running current
OpenStack stable release (e.g. 'Juno').
You can trivially make a snapshot:
$ nova image-create vm snap1-of-vm --poll
And, can boot instances off based on it:
$ nova boot --flavor 1 --key_name oskey1 --image snap1-of-vm newvm
--
/kashyap
4:54 p.m.
On 3/23/2015 12:49 PM, Michal Privoznik wrote:
On 23.03.2015 16:02, Fiorenza Meini wrote:
> Hi there,
> I'm running KVM under Openstack .
>
> When I give virsh list command, I see some VM in NON persistent state.
> What does it mean? How can I move it to a persisten state ?
You can do that by running:
virsh dumpxml $dom > dom.xml && virsh define dom.xml
You want `virsh
dumpxml --security-info $dom`, not just `virsh
dumpxml`. There is a *critical* difference in that the former will
preserve any passwords you have set (like say, VNC) whereas the latter
will not. This is sadly not very obvious.
9:28 a.m.
On 03/23/2015 03:54 PM, Brian Rak wrote:
On 3/23/2015 12:49 PM, Michal Privoznik wrote:
> On 23.03.2015 16:02, Fiorenza Meini wrote:
>> Hi there,
>> I'm running KVM under Openstack .
>>
>> When I give virsh list command, I see some VM in NON persistent state.
>> What does it mean? How can I move it to a persisten state ?
> You can do that by running:
>
> virsh dumpxml $dom > dom.xml && virsh define dom.xml
You want `virsh dumpxml --security-info $dom`, not just `virsh
dumpxml`. There is a *critical* difference in that the former will
preserve any passwords you have set (like say, VNC) whereas the latter
will not. This is sadly not very obvious.
VNC passwords are the ONLY thing protected by --security-info, and as it
is, they are not all that secure to begin with (8-byte maximum,
transferred in plaintext in the protocol). Spice security is much
better, and also not impacted by the limitation on preserving passwords.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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3513
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5 comments
6 participants
participants (6)
-
Brian Rak -
Eric Blake -
Fabrizio Soppelsa -
Fiorenza Meini -
Kashyap Chamarthy -
Michal Privoznik