Record locking through NFS.

Enrique Bernal (ebv@a68.com)
Thu, 2 Sep 1999 11:08:05 +0200


Hello, all.

I have a program that uses record locking - fcntl(filedes, F_SETLK, ...) -
in a file from a NFS server. That worked well in SuSE Linux 6.1 (Kernel
2.2.5)

Recently I have installed SuSE Linux 6.2 (Kernel 2.2.10) in both boxes (NFS
server and NFS
client), and I think I have configured them correctly, but my program
doesnīt manage to lock records in the serverīs file, as did in 6.1.

I have included the clientīs IP in serverīs /etc/exports (rw), both
/etc/hosts files contain both IP addresses, I have put
USE_KERNEL_NFSD="yes"
in both /etc/rc.config, and ran SuSEconfig (and reboot). I mount the server
in the client with "mount 192.1.121.2:/home /mnt", and got no errors. Even
I included the option "-o lock" in mount but with the same results: when my
program tries to lock the serverīs file, it just get an error "file
ocked".

Have I to configure something more in order to lock files in the NFS
server?
Have somebody any ideas about this?

NOTE: rpcinfo -p in both sides don't shows "nlockmgr" as it did with kernel
2.2.5.

Thank you in advance,

Enrique

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