What is meaning of Error: state recovery failed on NFSv4 server xx.xx.xx.xx with error 2

[Neil Brown]

On Thursday July 27, trond.myklebust at fys.uio.no wrote:
> On Fri, 2006-07-21 at 10:30 +1000, Neil Brown wrote:
> > Hi,
> >  I'm after some help interpreting this error message:
> > 
> >  Error: state recovery failed on NFSv4 server xx.xx.xx.xx with error 2
> > 
> > '2' is ENOENT, so it looks like the nfs4_get_setclientid_cred call in 
> > reclaimer (in fs/nfs/nfs4state.c) returned NULL.
> > This implies that clp->cl_state_owners is empty.
> > 
> > Is this really a problem that is worthy of an 'Error:' message, or
> > does it simply signify that no state has been established yet??
> 
> It really implies that we have a bug: if the state owner list is empty,
> but we're trying to recover/set up state, then something is screwed up.
> Do you have any idea what sequence of operations might have triggered
> this?

It was a testing run - connectathon running on 40 clients aiming at a
2-node cluster.  The target IP for the server is moved from one host
in the cluster to the other to see what happens.  Apparently this is
what happens...

Does that give you a clue?

NeilBrown