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From: mmcg@heraclitus.cs.monash.edu.au (Mike McGaughey)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Mount point going "west" [filesys becomes invisible]
Date: 24 Feb 1997 15:46:30 GMT
Organization: Monash University
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Message-ID: <5esd4m$hea$1@harbinger.cc.monash.edu.au>
References: <330FA49D.6E4C@OntheNet.com.au> <5eo8jn$pcu@flea.best.net>
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In article <5eo8jn$pcu@flea.best.net>,
dillon@flea.best.net (Matt Dillon) writes:
>:In article <330FA49D.6E4C@OntheNet.com.au>,
>:Tony Griffiths <tonyg@OntheNet.com.au> wrote:
>:>
>:>The 'mount' and 'df' commands show that some filesystems are mounted and
>:>so much space is being used. However, an 'ls' of the mount point shows
>:>an empty directory!
>
> I've seen simliar problems, mainly related with 'pwd' not working.
> Make sure that the *underlying* mount point directories are chmod'd 755
The other possibility (too obvious to mention?) is that an `ls' by
root in an NFS-mounted directory without -maproot will show an
empty directory if no other user has tried to access that directory
beforehand, and will give `permission denied' if someone else *has*
accessed it (funnily enough, on each of the contained dirs unless you
have cd'd to the directory before trying it):
mj.root/22: df
[...]
heraclitus:/U/sd0s1e/home/mmcg/Adacel 903405 101972 729161 12% Adacel
heraclitus:/U/sd0s1e/home/mmcg/Mud 903405 101972 729161 12% Mud
mj.root/23: ls H/Adacel
ls: Adacel: Permission denied
ls: Data: Permission denied
ls: Dev: Permission denied
ls: Gen: Permission denied
ls: README: Permission denied
ls: Src: Permission denied
mj.root/24: ls H/Mud
mj.root/25: ls H/Mud/
mj.root/26: cd H/Mud/
mj.root/27: ls
ls: .: Permission denied
mj.root/28:
H/Mud is non-empty for a non-root user. NFS/cache interaction?
Cheers,
Mike.
ps: in an amusing twist, on my 2.2-BETA machine, `df -t nfs' lists
the mounted MSDOS partitions :)