Django ImageField upload to nfs. (No locks available)

Question

I want to upload with a Django ImageField to a nfs storage but I get this error:

[Errno 37] No locks available

This is in /etc/fstab/:

173.203.221.112:/home/user/project/media/uploads/ /home/user/project/media/uploads nfs rw,bg,hard,lock,intr,tcp,vers=3,wsize=8192,rsize=8192 0 0

I also tried to patch django to use flock() instead of lockf() but still not working.

http://code.djangoproject.com/ticket/9400

Any idea whats wrong?

Answer 1

You could check if nfslock is running on both the nfs server and client machines. It is responsible for managing the locks.

Answer 2

I have this messy issue once, and after losing a lot of time looking for an answer I found this solution: rpc.statd

I have to execute that command in both sides of the NFS folders, in my case was my Computer and a Virtual Machine

Some information about this command can be found here:

• Linux command: rpc.statd - NSM status monitor

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In case that is not enough, some times I faced this issue I have to execute the statd service manually because it wasn't running. This other way to fix the problem is execute in both sides of the NFS the command:

service statd start

After executing the command in both sides the locking problem should dissappear.

Some more information on NFS software can be found here:

• Archlinux wiki: NFS