Is NFS Locking Reliable?
kheuer2 at gwdg.de
Tue Mar 10 01:30:57 PDT 2009
I'd like to ask for your experiences with NFS locking in larger
Our experiences are not so satisfying. Our NFS servers for user home
directories are on FreeBSD (6.4), MacOSX (10.5), Linux (still 2.4 kernel)
and Tru64-UNIX boxes; NFS clients are mostly Linux (2.6 kernel) and
FreeBSD (6.4, 7.0, but w/o kernel lockd) systems.
There are periods of several days without problems, but from time to time,
on one, two, or several (but not all) clients application processes which
use locking suddenly hang in kernel mode - namely firefox, opera, pine.
It seems to be no specific operating system problem - all combinations of
clients and servers are involved.
There are some suspicious facts that out network may cause problems
although not all ip subnets are protected by cisco firewall modules. But
there may be other circumstances which could lead to sporadic packet
losses or whatever else ...
So, if anyone has similar or other experiences with NFS locking, I'm very
interested in reading about!
Thank you very much in advance!
GWDG, Am Fassberg, 37077 Goettingen, Germany, kheuer2 at gwdg.de
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