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[Linux-cluster] NFS timeout once service has failover



I have a NFS clustered two nodes service using a VIP.
NFS clients are setup with following options: rw,timeo=10,retrans=3,retry=1,soft,intr

When NFS service triggers from one node to another, NFS clients can no longer acces NFS mount (sometimes it just comes back after a long period of time, much more than 90s NFS gracefull period, sometimes not).

NFS clients reports: xxxxx kernel: nfs: server xxxxxxxxx not responding, timed out

tcpdump shows that NFS server is responding (so there should not be any arp problem, ping comes back up as soon as NFS service has been started on new node)

Clients and servers are 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

Thanks for your help,


--
Antoine


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