[Linux-cluster] NFS client failover
linux-cluster at lists.grepular.com
Tue Aug 25 19:40:33 UTC 2009
crypto grid wrote:
> I have a small cluster which shares a filesystem via GFS on a SAN,
> with iSCSI. There are a couple of hosts external to this cluster
> which I would like to have access to the GFS filesystem via NFS. I
> have exported the same mountpoint on each of the hosts that have the
> GFS mount.
> I can connect via NFS to one of these cluster hosts, but when it
> goes down, I have to unmount it, and then remount against another
> host. I suspect I could do something with a floating IP? but I was
> wondering if it would be possible to do this with client side logic
> so that the nfs mount automatically moves to a different working
> host if one stops responding?
> I don't see why you want to resolve this from the client side.
I figured that failover would happen more smoothly if the client was
aware of and in control of what was going on. If the IP suddenly moves
to another NFS server I don't know how the NFS client will cope with that.
> You must configure an ip address resource.
Yeah, that's what I was going to try if there wasn't a client side solution.
> Take a look at this document:
That document looks very useful. Thank you for pointing it out to me.
Mike Cardwell - IT Consultant and LAMP developer
Cardwell IT Ltd. (UK Reg'd Company #06920226) http://cardwellit.com/
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