[Libvir] Is it possible to add an interface to intercept the migration process?
Daniel P. Berrange
berrange at redhat.com
Thu Oct 18 15:28:11 UTC 2007
On Thu, Oct 18, 2007 at 05:29:53PM +0800, Jack Meng wrote:
> Thanks for your reply.
> Actually I'm thinking about how to recognize the same storage (probably
> external), not things on them. Sometimes storages are shared between
> hosts but have different paths to access, e.g., for fibre channel
> storages. So an update to the conf file is probably needed here to let
> the dest attach 'right' storages.
Frankly this is a a solved problem already. If you need persistent device
names, don't use /dev/sdN.
With SAN you can use device mapper multipath to make your devices appear
as /dev/mpath/<WWN> where WWN is the world world name for the LUN. Or
you can setup udev rules to give a similar persistent name. 'man scsi_id'
Re-writing config files in Xen or libvir is just the wrong place todo this.
Dan.
--
|=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=|
|=- Perl modules: http://search.cpan.org/~danberr/ -=|
|=- Projects: http://freshmeat.net/~danielpb/ -=|
|=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|
More information about the libvir-list
mailing list