On Mon, Jun 13, 2016 at 07:10:56PM -0500, Malahal Naineni wrote: > J. Bruce Fields [bfields@xxxxxxxxxxxx] wrote: > > On Tue, Jun 07, 2016 at 10:02:19PM +0200, sebastien cabaniols wrote: > > > Hello linux-nfs mailing list. > > > > > > I would like to know if the linux nfs client included in current > > > versions of the kernel supports fail-over to a replica on another nfs > > > server, I am using (manually) synchronized read-only shares... > > > > > > I found very few information on Google about this topic and I suspect > > > this is not implemented. > > > > That's correct (unless I've missed something!). > > > > > I actually tried to setup this using SLES12SP1 (3.12.49 kernel) but I > > > failed so far. I am not attached to this distribution/version in > > > particular, just trying to see it working for real. > > > > > > ( I did some "rpcdebug -m nfs" session and it seems the fs_locations > > > is not getting properly populated on my setup ) > > > > > > Any confirmation this should work or not would actually help me. > > > > > > THX. > > > > > > > > > note from the exports man page: > > > > > > replicas=path@host[+host][:path@host[+host]] > > > If the client asks for alternative locations for the > > > export point, it will be given this list of alternatives. > > > (Note that actual replication of the filesystem must be > > > handled elsewhere.) > > > > Yes, the server side (assuming you've got the backend replication > > working) is pretty easy, and should work (though I don't know if it's > > gotten any testing). > > Bruce, we did test the server side couple years ago. I don't remember > any issues on the server side. We did some rudimentary support on the > client side (we were using rsync for replication and our exports were > read-only!). I remember "find" having an issue with inode number change > while it was running, but don't remember any other issues. The client > patches never made it to mainline though. Oh, thanks for the reminder. I wonder if the client's closer to ready for failover support now. I don't remember what the issues were. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
