Re: Nfs Failover

[Jordi Prats <jprats@cesca.es>]

To avoid the stale state on your clients you should add a tag to your 
exported filesystems. For example:

/usr 10.0.0.1(rw,sync,no_root_squash,nohide,fsid=1)
/usr 10.0.0.2(rw,sync,no_root_squash,nohide,fsid=1)

/var 10.0.0.1(rw,sync,no_root_squash,nohide,fsid=2)
/var 10.0.0.2(rw,sync,no_root_squash,nohide,fsid=2)

regards,
Jordi

J. Bruce Fields wrote:
> On Tue, Oct 09, 2007 at 03:40:22PM -0400, Saurabh Sehgal wrote:
>> Hi all,
>>
>> I am trying to do an nfs failover from one server to another in a 4 node
>> cluster . During this failover, I have a link from /var/lib/nfs directory to
>> a mount that resides on a shared disk. When i want to move the "resources"
>> from one node to the other ... this is how I go about initiating the move :
>>
>> 1) /etc/init.d/nfsserver stop
>> 2) mount /var/lib/nfs on the failover node
>> 3) move IP address to failover node
>> 3) /etc/init.d/nfsserver start
>> 4) /sbin/sm-notify -v <failover ip address>
>>
>> Are these the correct steps ? What I end up getting is a Stale NFS File
>> handle on all client nodes, until I unmount and remount them again. For the
>> purpose of my application this mount/unmount of clients is undesirable .
>> What should I do ? Any help would be appreciated.
> 
> What filesystem are you exporting?
> 
> --b.
> 
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