From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rashmi Agrawal <rashmi.agrawal@wipro.com>
Subject: Re: Information needed(NFS)
Date: Mon, 18 Nov 2002 20:57:53 +0530
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To: Trond Myklebust <trond.myklebust@fys.uio.no>
List-Id: linux-fsdevel.vger.kernel.org

Hi Trond,
Thanks  for the quick response.

>      > do we have any nfsv4 implementation which has matured to use for
> my
>      > needs where in I might like to have replication/ migration,
>      > high availibility etc.
>
> NFSv4 is still work in progress.

When you talk about NFSv4 implementation in progress, is it from
citigroup in MIchigan as I would like
to know the implemented features if it is something else.

I have another scenario wherein I have 4 node cluster and nfsv3 in all of
them.

First scenario:
1. Server running in one of the 2 nodes connected to shared storage and 2
other nodes are acting as clients.
2. If nfs server node crashes, I need to failover to another node wherein
I need to have access to the lock state of the previous
server which might not be in shared disk. Also,I need to tell the clients
that the IP address of the nfs server node has changed.
IS IT POSSIBLE or what can be done to implement it?

Another scenario is..
1. When one of the client crashes, it has to failover to another client,
in that case if client crashed with some locks held how the
newly come up client going to grab the lock again when it is not
released? Again the server might already be taking care
of it but I am not sure about it.

I hope I can use NFS for this kind of set up and if not what will it take
to have this kind of set up using NFS?

I have also posted this query in linux-kernel and I am sorry for the
inconvinience if you get it twice. Please   do copy
to me while replying.

Regards
Rashmi
Trond Myklebust wrote:

>  Cheers,

>   Trond