From: devzero@web.de
Subject: nfs exports & bind mounts
Date: Sat, 10 Nov 2007 22:36:45 +0100
Message-ID: <2077779951@web.de>
Mime-Version: 1.0
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To: NFS@lists.sourceforge.net
Sender: nfs-bounces@lists.sourceforge.net
Errors-To: nfs-bounces@lists.sourceforge.net

Hi !

i think everybody knows bind mounts.

i can do:

touch /otherpath/dummyfile
mount -bind /path/file /otherpath/dummyfile

so /path/file becomes accessible via /otherpath/dummyfile - dummyfile has the same size as file after successful bind-mount

i can loopback-mount /otherpath/dummyfile to /otherpath/mnt if file/dummyfile contains a filesystem

when i export /otherpath via nfs (crossmnt), from the client side i can access the contents of the filesystem inside file/dummyfile via /otherpath/mnt  - but i cannot access the contents of dummyfile itself, i.e. the bind-mount seems to get lost on export.

can someone tell if this is expected behaviour or if this is a bug ?

regards
roland
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