Comment 0 for bug 181996

Running NFS server on Ubuntu Server 7.10 on x86 machine (Pentium-3, 1G RAM).
- linux-image-2.6.22-14-server (2.6.22-14.47)
- nfs-kernel-server (1:1.1.1~git-20070709-3ubuntu1)
- nfs-common (1:1.1.1~git-20070709-3ubuntu1)

NFS clients (ubuntu, gentoo, fedora core) mount home directories from the server.
Works fine for a while after reboot, but at some moment (30 minutes to several days after last reboot) client applications (firefox, thunderbird, openoffice, ...) would freeze at start and the following error message can be seen in the syslog:

Jan 11 14:08:33 jig kernel: [ 5527.793749] lockd: server tango not responding, still trying
Jan 11 14:08:34 jig kernel: [ 5529.029039] lockd: server tango not responding, still trying
Jan 11 14:08:45 jig kernel: [ 5540.246812] lockd: server tango not responding, still trying

The nfsd, rpc.statd, rpc.mountd processes keep running on server. No relevant errors can be found in server syslog neither.

Restarting the nfs-kernel-server (on server) and nfs-common (on both server and client) would not help - the problem persists.

Have also tried nfs-user-server instead of nfs-kernel-server - no luck.

The only way to make it work is to reboot the server.