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From Devdeep Singh <devdeep.si...@citrix.com>
Subject RE: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
Date Wed, 19 Dec 2012 09:03:34 GMT
Hi Alex,

I was planning to cover the following scenarios:
1. Live migrate a VM with disks from Host A to Host B within the same cluster. This currently
works with shared storage. I was thinking of extending it to support local storage too.
2. Live migrate a VM from Host A to Host B across cluster. VM's disks also move from one storage
repository to another.
3. Live migrate a VM's disks from one storage repository to another, but VM stays in the same
host. I didn't make it clear in my earlier mail, sorry about that. Should it be a separate
jira ticket?

For each of them the disk offerings for each disk should be honored. That is, if a disk is
using shared storage it should be moved to a shared SR. Same applies to disks using local
storage too.

Regards,
Devdeep

> -----Original Message-----
> From: Alex Huang [mailto:Alex.Huang@citrix.com]
> Sent: Wednesday, December 19, 2012 4:56 AM
> To: cloudstack-dev@incubator.apache.org
> Subject: RE: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> 
> Devdeep,
> 
> It sounds like from this that all you're doing is the ability to live migrate vms
> from one cluster to another cluster.
> 
> Is there anything on storage migration itself?
> 
> --Alex
> 
> > -----Original Message-----
> > From: Devdeep Singh [mailto:devdeep.singh@citrix.com]
> > Sent: Tuesday, December 18, 2012 12:40 AM
> > To: cloudstack-dev@incubator.apache.org
> > Subject: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> >
> > 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

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