openstack team mailing list archive

[<masumotok@xxxxxxxxxxxxx>]

Hi,

> When doing live migration, we could let KVM migrate the
> VM state and somehow tell gluster to migrate the disk image to the new
> host (to maintain locality between the virtual machine and its storage).
> Gluster already has the means to do live rebalancing, but I don't believe
> an API to specify "I'd like for this particular file to reside on this
> particular brick. Please make it so". That would *rock*.

In current openstack live migration feature, a flag --instances_path specifies the path which has to be on shared storage. Live re-balancing sounds like good idea, and I think at least, just "--instances_path is on the glusterFS" is good option to users. 
If you want any help, my colleague and me would love to do ^^;


> -----Original Message-----
> From: openstack-bounces+masumotok=nttdata.co.jp@xxxxxxxxxxxxxxxxxxx
> [mailto:openstack-bounces+masumotok=nttdata.co.jp@xxxxxxxxxxxxxxxxxx
> t] On Behalf Of Soren Hansen
> Sent: Monday, June 06, 2011 7:40 AM
> To: Shehjar Tikoo
> Cc: openstack@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Openstack] Integrating GlusterFS with OpenStack
> 
> 2011/6/3 Shehjar Tikoo <shehjart@xxxxxxxxxxx>:
> > We're aiming to integrate Gluster with Openstack in a way that allows
> > GlusterFS to be used as the storage for application volumes as well
> as VMs.
> > I am interested in hearing your ideas on how such an integration can
> > be performed. Being the openstack experts, could you please share some
> > issues I should be considering, the problems I may run into or
> > anything else you think I should know.
> 
> One thing I'd love to be able to do is store my virtual disks on a gluster
> filesystem that is shared across my compute nodes. The data would be
> stored on the host that is actually running the virtual machine (think
> NUFA scheduler). When doing live migration, we could let KVM migrate the
> VM state and somehow tell gluster to migrate the disk image to the new
> host (to maintain locality between the virtual machine and its storage).
> Gluster already has the means to do live rebalancing, but I don't believe
> an API to specify "I'd like for this particular file to reside on this
> particular brick. Please make it so". That would *rock*.
> 
> --
> Soren Hansen        | http://linux2go.dk/ Ubuntu Developer    |
> http://www.ubuntu.com/ OpenStack Developer | http://www.openstack.org/
> 
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