Re: Regarding persistence of VM's after live migration (virDomainMigrateToURI() problem)

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On Mon, Apr 30, 2012 at 11:37:04AM -0400, Cole Robinson 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.

For a longer description read this page which describes config file
handling in some details

  http://libvirt.org/migration.html

NB though not all hypervisors support all modes - libvirt will tell you
if you try to use an unsupported flag though

Daniel
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