[libvirt-users] Regarding persistence of VM's after live migration (virDomainMigrateToURI() problem)
Cole Robinson
crobinso at redhat.com
Wed May 2 14:12:17 UTC 2012
On 05/02/2012 04:52 AM, Coding Geek wrote:
>
>
> On Mon, Apr 30, 2012 at 9:07 PM, Cole Robinson <crobinso at redhat.com
> <mailto:crobinso at redhat.com>> wrote:
>
> On 04/25/2012 07:06 AM, Coding Geek wrote:
> >
> > Hello
> > I am working with 3 host machines each running xen with shared NFS
> storage. I
> > am working on automatic load balancing if one host is over utilized and
> > another is under utilized by measuring the utilization from xentop. I am
> > facing a problem after migration of VM. I am setting the flags ( 1| 8|
> 16) in
> > order to do live migration, persist VM on destination, undefine host from
> > source. After migration if I shut off the migrated VM on destination host it
> > does not persist. I am using the migrateToURI() API for migration.
> >
> > Please help how to make VM persist on destination.
> >
>
> There's a flag you can pass to the migration API, VIR_MIGRATE_PERSIST_DEST.
>
> - Cole
>
>
> Actually I am already using this flag VIR_MIGRATE_PERSIST_DEST but still VM is
> not persisting on Destination. Do I need to change something while creating
> the VM?
>
That flag might not be implemented to xen. But in that case it should
explicitly reject the flag. Please file a bug.
But if you need a working solution, you can just do a lookupByName on the
remote host after migration, then define that guest to make it persistent.
- Cole
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