<div class="gmail_quote">On Wed, May 2, 2012 at 7:42 PM, Cole Robinson <<a href="mailto:crobinso@redhat.com" target="_blank">crobinso@redhat.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="im">On 05/02/2012 04:52 AM, Coding Geek wrote: > > > On Mon, Apr 30, 2012 at 9:07 PM, Cole Robinson <<a href="mailto:crobinso@redhat.com">crobinso@redhat.com</a> </div><div><div class="h5">> <mailto:<a href="mailto:crobinso@redhat.com">crobinso@redhat.com</a>>> 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? > </div></div>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 </blockquote></div> Ok. Before trying your solution one thing i want to ask. After migration I can do lookupByName which returns a domain pointer and then I can get the XML description of domain using getXMLDesc and then "can I still define the domain using defineXML because it returns a newly created domain's pointer?" and domain is already running in transient mode. I do not want to shut off the domain after migration. -- Tasvinder