NFSv4 Active-Active Cluster Queries

[J. Bruce Fields]

On Thu, Jul 20, 2006 at 12:11:26AM -0600, Rajat Upadhyaya wrote:
> I have been working on setting up NFSv4 in cluster scenario. But when
> it comes to an Active-Active setup, it seems there are a few problems. 

Yes.  Even active-passive failover is problematic right now, mainly
because the method we use for storing reboot recovery information
(analagous to the state recorded by statd) is still in flux.

We're aware of these problems and working on solving them.  There are
some rough (possibly out of date notes) here:

http://wiki.linux-nfs.org/index.php/Cluster_Coherent_NFS_design

but those are more of interest to someone working on design of a
solution than to someone trying to set up and use any of this (which we
don't recommend doing yet).

--b.