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[Cluster-devel] Re: [PATCH 1/2] NLM failover unlock commands



Frank van Maarseveen wrote:
shell> echo 10.1.1.2 > /proc/fs/nfsd/unlock_ip
shell> echo /mnt/sfs1 > /proc/fs/nfsd/unlock_filesystem

The expected sequence of events can be:
1. Tear down the IP address

You might consider using iptables at this point for dropping outgoing
packets with that source IP address to catch any packet still in
flight. It fixed ESTALE problems for me IIRC (NFSv3, UDP).

ok, thanks ... Wendy
2. Unexport the path
3. Write IP to /proc/fs/nfsd/unlock_ip to unlock files
4. If unmount required, write path name to
   /proc/fs/nfsd/unlock_filesystem, then unmount.
5. Signal peer to begin take-over.




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