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From: dillon@flea.best.net (Matt Dillon)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Mount point going "west" [filesys becomes invisible]
Date: 22 Feb 1997 18:04:39 -0800
Organization: BEST Internet Communications, Inc.
Lines: 31
Message-ID: <5eo8jn$pcu@flea.best.net>
References: <330FA49D.6E4C@OntheNet.com.au>
NNTP-Posting-Host: flea.best.net
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:36015
:In article <330FA49D.6E4C@OntheNet.com.au>,
:Tony Griffiths <tonyg@OntheNet.com.au> wrote:
:>Has anyone seen the following error on FreeBSD 2.1.5-RELEASE (or any
:>release for that matter) -
:>
:>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!
:>
:>This has happened to be at least once before on a DEC Unix workstation
:>and the only recourse (as with the FreeBSD box) was a reboot. However,
:>I am curious as to how the filesystem becomes "detached" from it's mount
:>point but is still visible via mount/df !!!
:>
:>This happened to two filesystems on our Web proxy server (128MB P120),
:>but it was only the 4GB SCSI disks that went "west". The root and /usr
:>filesystems located on a 3GB IDE disk stayed home.
:>
:>Has this sort of problem happened to anyone else running FreeBSD as a
:>server? We also use FreeBSD on our news server also with 2 4GB SCSI
:>disks (same NCR810 controller) and I can't recall this problem happening
:>there even though it does one hell of a lot more I/O that the proxy!
:>
:>Tony
I've seen simliar problems, mainly related with 'pwd' not working.
Make sure that the *underlying* mount point directories are chmod'd 755
and see if that helps.
-Matt