On 19/12/12 12:13 PM, "Devdeep Singh" <devdeep.si...@citrix.com> wrote:
>> -----Original Message----- >> From: Chip Childers [mailto:chip.child...@sungard.com] >> Sent: Tuesday, December 18, 2012 9:07 PM >> To: cloudstack-dev@incubator.apache.org >> Subject: Re: [DISCUSS] Enabling storage xenmotion on xenserver 6.1 >> >> On Tue, Dec 18, 2012 at 3:39 AM, Devdeep Singh >> <devdeep.si...@citrix.com> wrote: >> > Hi, >> > >> > XenServer introduced support for Storage XenMotion in the latest >>version >> (6.1). Storage XenMotion allows VMs to be moved from one host to >>another, >> where the VMs are not located on storage shared between the two hosts. >>It >> provides the option to live migrate a VM's disks along with the VM >>itself. It is >> now possible to migrate a VM from one resource pool to another, or to >> migrate a VM whose disks are on local storage, or even to migrate a >>VM's disks >> from one storage repository to another, all while the VM is running. >>More >> information on Storage XenMotion can be found at [1]. >> > >> > I have filed a jira request [2] to track this feature. I plan to >>extend the >> migrate vm cloudstack api call to allow migration of instances across >>clusters. >> Do let me know your comments. >> > >> > [1] http://blogs.citrix.com/2012/08/24/storage_xenmotion/ >> > [2] https://issues.apache.org/jira/browse/CLOUDSTACK-659 >> > >> > Regards, >> > Devdeep >> > >> >> +1 to this feature. >> >> Do you have thoughts on how the API call respond when the underlying >> hypervisor doesn't support this feature? > >My thinking was to fail that operation with a message saying that it >requires >storage motion and the hypervisor doesn't support it. One way would be for >cloudstack to check if moving the instance/vm to a new host requires >moving >its storage. If so and the underlying hypervisor doesn't support it, >cloudstack >could fail the migration request. > >Regards, >Devdeep Instead of failing the migration request can't we warn the initiator that the VM will be stopped and migrated ? It will be known before hand as to what Hypervisor do not support live migration. -abhi >
