RE: [Xen-users] Xen and GFS

["Sylvain Coutant" <sco@xxxxxxxxxx>]

> For migration, you'd be doing somewhat the same thing, only you'd need a
> separate SAN LUN (still use LVM inside dom0) for each VBD.

Just use the same shared LVM (see clvm).


> so all you have to
> do
> is make that LUN available to the other Xen instance and you should be
> set.

And be sure that old node won't have data in memory cache not still written to 
disk. Will Xen take care of this ?

Use clvm to sync metadata and hack Xen VBD scripts to lvchange -aly/lvchange 
-aln on start/stop of a VM. That will keep everyone synced automagically and 
flush pending writes on shutdown.


BR,

--
Sylvain COUTANT

ADVISEO
http://www.adviseo.fr/
http://www.open-sp.fr/



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