[sclug] NFS exports and transient network

Darren Davison darren at davisononline.org
Tue Nov 1 12:12:03 UTC 2005


I constantly seem to have a really frustrating problem with NFS mounts.
Whenever a network link is severed (frequent with an iffy VPN I use for work)
then it becomes impossible to umount any mounted directories that were using
that connection.

Even attempting to ls the directory hangs the process.  kill -9 (even as root)
totally fails to kill the ls or the umount process that is hanging.  Worse
than that, any attempt to reboot fails because the hung process cannot be
killed!  I have to forcibly power off to get a cold boot.

I can't believe a protocol as old as NFS and an OS as net-savvy as Linux can
combine to produce this appalling level of behaviour - it *must* be something
I'm missing in the config.. no?  Not even windows (gasp) handles a transient
network connection this badly.

Darren Davison
Public Key: 0xDD356B0D
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