On Wed, 2009-08-26 at 09:55 +0100, Mike Cardwell wrote: > On 25/08/2009 20:40, Mike Cardwell wrote: > > > 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. > > Well, it seems to cope quite well. The nfs mount "hangs" for a few > seconds whilst the IP moves from one server to another (unavoidable > obviously), but it then picks up from where it was. I suspect there will > be file corruption issues with files that are partially written when the > failover happens, but I guess that can't be avoided without a client > side solution. I don't think we've had reports of corruption in the past. When using TCP, the client can hang for a very long time before recovering; using UDP seems to resolve this. -- Lon -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
