Re: Stopping NFS, ip address take over, zero-copy NFS for 2.4.21, and misc

[rnews@tasking.nl]

Chris Worley <cworley@lnxi.com> wrote:
| 2) IP address takeover between NFS servers.
| 
| With NFS stateless, and not running lock servers, I thought a simple IP
| address takeover scheme (when an I/O server goes down, another just adds
| the failed server's IP address as a virtual interface) would allow
| clients to immediately renegotiate with the same IP address pointing to
| another NFS server (serving the same partitions).  The take-over is
| successful: the clients can communicate with the new I/O server, but I
| get "permission denied" (as root or otherwise) on the NFS mounted
| partitions most of the time (sometimes it works).
| 
| What am I missing?

You should migrate the appropriate entries from /var/lib/nfs/rmtab to
the new server. Also, when the new server uses a different device
number, you need to use the "fsid" option in /etc/exports, to avoid
changes in the NFS file handles.

-- 
Dick Streefland                      ////                      Altium BV
dick.streefland@altium.nl           (@ @)          http://www.altium.com
--------------------------------oOO--(_)--OOo---------------------------



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