[ovirt-users] Live Storage Migration

[Markus Stockhausen]

> Von: Greg Padgett [gpadgett at redhat.com]
> Gesendet: Samstag, 19. September 2015 02:19
> An: Markus Stockhausen
> Cc: Users at ovirt.org
> Betreff: Re: [ovirt-users] Live Storage Migration
> 
> On 09/14/2015 05:20 AM, Markus Stockhausen wrote:
> > Hi,
> >
> > somehow I got lost about the possibility to do a live storage migration.
> > We are using OVirt 3.5.4 + FC20 Nodes (virt-preview - qemu 2.1.3)
> >
> >  From the WebUI I have the following possibilites:
> >
> > 1) disk without snapshot: VMs tab -> Disks -> Move: Button is active
> > but it does not allow to do a migration. No selectable storage domain
> > although we have 2 NFS systems. Gives warning hints about
> > "you are doing live migration, bla bla, ..."
> >
> > 2) disk with snapshot: VMs tab -> Disk -> Move: Button greyed out
> >
> > 3) BUT! Disks tab -> Move: Works! No hints about "live migration"
> > I do not dare to click go ...
> >
> > While 1/2 might be consistent they do not match to 3. Maybe someone
> > can give a hint what should work, what not and where me might have
> > an error.
> 
> Hi Markus,
> 
> Is this still relevant?  If so...
> 
> Live storage migration requires the following (from the code that
> determines if the "Move" buttons in 1/2 above are greyed or not):
> 
>   - cluster and dc version must be at least 3.2
>   - vm must be stateful and up or paused
>   - disk to migrate must be the active layer (ie not a snapshot)
>   - disk images must be 'OK'
> 
> Is it possible one of these changed for the VM(s) in question?

Hi Greg, 

thanks for your response. In between I was able to get into it. 
Situation is as follows:

- Move button is grayed out during VM start (3 green arrows up)
As I have a refresh interval of 60 secondes, it can stay gray for a
long time.

- Disks can be migrated with or without snapshots. 

- For the different dialogue behaviour I opened bug
https://bugzilla.redhat.com/show_bug.cgi?id=1264643

Markus

> Thanks,
> Greg
> 
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