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Date: Tue, 25 May 2010 20:03:09 +0200
From: Leon =?iso-8859-15?Q?Me=DFner?= <l.messner@physik.tu-berlin.de>
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Subject: freeBSD nullfs together nfs and "silly rename"
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Hi,

when you try to do the following inside a nullfs mounted directory,
where the nullfs origin is itself mounted with nfs you get an error:

# foo=20
# tail -f foo&=20
# rm -f foo=20
tail: foo: Stale NFS file handle
# fg


This is really a problem when running services inside jails and using
NFS as storage. As of [2] it looks like this problem is known for a
while. On a normal NFS mount this does not happen as "silly renaming"
[1] works there.

As freeBSD is getting towards NFSv4 perhaps this would be a solution but
i actually would'nt want to use these in production.
Is there a fix or anything ?


[1] http://nfs.sourceforge.net/#faq_d2
[2] http://ftp.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/sys/nfsc=
lient/nfsnode.h,v rev:1.32.2.1

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