[Lustre-discuss] Interoperability beween lustre 1.4.11client and lustre 1.6.server

[David Dillow]

On Thu, 2008-04-24 at 13:18 -0700, Herb Wartens wrote:
> Actually we have a patch here at the lab that augments lctl to copy logs.
> We can do this on a running filesystem.  If the administrator uses this
> command, it is possible to have a freshly formatted 1.6 Lustre filesystem
> that can mount 1.4.x clients.  This seems to work just fine on our test
> systems.  There are some log records that 1.4 clients do not understand, but there
> seem to just be harmless markers.  We also plan on using this if we ever add any new
> osts to the filesystems that we upgraded from 1.4 to 1.6...
> I will open a bug and post the patch over there if people might find it useful.

Please do, this could prove useful for our upcoming deployment as well.
-- 
Dave Dillow
National Center for Computational Science
Oak Ridge National Laboratory
(865) 241-6602 office