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Re: Console freezes when I try to access the NFS mounted directory under Debian and Ubuntu

On Wednesday 05 May 2010 8:52:45 am Octavian Rasnita wrote:
> I have a FreeBSD 7.2-RELEASE-p6 FreeBSD 7.2-RELEASE-p6 #0: Wed Jan  6
> 00:43:01 UTC 2010 that works as an NFS server, with the following line in
> /etc/exports:
> Both these servers mount the local /srv/data directory to the one exported
> by the server that uses FreeBSD using NFS I use the following line in
> /etc/fstab (where is the IP of the server that runs the NFS
> server):
> /srv/data nfs rw,sync 0 0
> Right after I reboot any of these 2 servers, the /srv/data directory is
> mounted correctly and I can access the files and directories under it, but
> after a certain period of time (that can be minutes, hours or even days),
> the console freezes if I use the command:
> $ cd /srv/data
> or
> $ ls -l /srv/data
> ...and I can't even break it with Ctrl+C.
> The single workaround (for a while) is to reboot the NFS client machine,
> which is not an acceptable solution.
> I have tried to add the "hard" and "intr" options in the line from
> /etc/fstab that mounts /srv/data, hoping that at least I will be able to
> break that frozen directory with Ctrl+C, but nothing changed.

I may be experiencing a similar issue. On the clients, does dmesg say things 

nfs: server <server> not responding, still trying
nfs: server <server> OK

I have been troubleshooting this for the better part of a week and have gotten 
nowhere. Changing all of the mounts to use nfs4 seems to fix the problem, but I 
have to use nfs3 for one of the mounts (otherwise I get into ID mapping hell).

There is an open bug in (I think) nfs-kernel-server that describes similar 
symptoms, but offers no solution.

Is anyone else experiencing this?


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