----- Original Message -----
> From: "Shu Ming" <shum...@linux.vnet.ibm.com>
> To: "Federico Simoncelli" <fsimo...@redhat.com>
> Cc: "VDSM Project Development" <firstname.lastname@example.org>
> Sent: Tuesday, February 7, 2012 4:10:38 AM
> Subject: Re: [vdsm] Live Merge and Storage Live Migration
> I am just curious how HSM interact with SPM after HSM get merge
> request no matter if they are in the same host.
At the moment the engine is responsible to poll the merge status on
the HSM (and restart it if failed). When it's successfully completed
the deleteVolume command must be issued to the SPM.
In the future we might consider the mailbox as mean of communication
between the HSM and the SPM, even though it's now enabled only for
block storage domains (and if the irs.vol_extend_policy is ON).
Still the entry point would be the deleteVolume call on the SPM.
> On 2012-2-7 4:34, Federico Simoncelli wrote:
> > During my endless journey back from FOSDEM (24 hours stuck in
> > airports,
> > taxi and trains because of one of the largest blizzards in Italy
> > ever),
> > I've been briefly working on the design for both live merge and
> > storage
> > live migration:
> > http://www.ovirt.org/wiki/Features/Design/LiveMerge
> > http://www.ovirt.org/wiki/Features/Design/StorageLiveMigration
> > They're far for being complete but I'm not able to do anything
> > better
> > now.
> > Please review if you're interested, the general idea should be
> > correct
> > even though there are several unfinished parts.
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