Re: [Libvir] Is it possible to add an interface to intercept the migration process?
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.
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