NFS issue: Irix server, Linux client - inode number mismatch

NFS issue: Irix server, Linux client - inode number mismatch

[Alan Hagge]

We have an SGI Irix 6.5-based server running NFS3 with Linux 2.4.7
clients attaching.  Whenever the server crashes, the Linux clients have
problems with their NFS mounts. Typically, they're unusable until after
reboot.

The /var/log/messages file on the Linux client side has the following
messages: 

        Oct  8 16:01:27 lrender2 automount[22485]: expired
/usr/local/sgi/wbfa 
        Oct  8 16:01:27 lrender2 kernel: nfs_refresh_inode: inode number
mismatch 
        Oct  8 16:01:27 lrender2 kernel: expected (0x3000007/0x6467c36),
got (0x3000005/0x6467c36) 
        Oct  8 16:06:27 lrender2 automount[22486]: expired
/usr/local/sgi/wbfa 
        Oct  8 16:06:27 lrender2 kernel: nfs_refresh_inode: inode number
mismatch 
        Oct  8 16:06:27 lrender2 kernel: expected (0x3000007/0x6467c36),
got (0x3000005/0x6467c36) 
        Oct  8 16:11:27 lrender2 automount[22487]: expired
/usr/local/sgi/wbfa 
        Oct  8 16:11:27 lrender2 kernel: nfs_refresh_inode: inode number
mismatch 
        Oct  8 16:11:27 lrender2 kernel: expected (0x3000007/0x6467c36),
got (0x3000005/0x6467c36) 

Can anyone tell me if this is expected behavior, and if not, if the
problem is in the Irix NFS server implementation or the 
Linux client implementation?  I don't have the NFS expertise to be able
to discern...

BTW, other clients (SGI Irix and Mac OS X workstations) connected to the
same mount points do NOT exhibit this 
behaviour after a server crash.

I checked the changelog at
http://www.fys.uio.no/~trondmy/src/ChangeLog.NFSv3 but didn't see
anything relevant.

Thanks,

Alan Hagge

Replies via cc:, please...

Re: NFS issue: Irix server, Linux client - inode number mismatch

[Trond Myklebust]

>>>>> " " == Alan Hagge <ahagge@wbfa.com> writes:

     > /usr/local/sgi/wbfa
     >         Oct 8 16:01:27 lrender2 kernel: nfs_refresh_inode:
     >         inode number
     > mismatch
     >         Oct 8 16:01:27 lrender2 kernel: expected
     >         (0x3000007/0x6467c36),
     > got (0x3000005/0x6467c36)

That means that the device number or 'fsid' suddenly has changed on
your server. That's a server bug.

Cheers,
   Trond