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Date: Mon, 19 Oct 1998 01:05:23 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199810181505.BAA30746@godzilla.zeta.org.au>
To: bde@zeta.org.au, dag-erli@ifi.uio.no
Subject: mount -u -o ro bug (was: cvs commit ...)
Cc: cvs-all@FreeBSD.ORG, cvs-committers@FreeBSD.ORG, des@FreeBSD.ORG
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>> > > > > >  Warn about "mount -u" bug.
>> > > > > FUD.
>...
># mount -u -o rw /usr
># make installworld
># mount -u -o ro /usr

There is a problem with unlinked open files.  Switching to ro leaves their
inode unreferenced, and it can't be removed if the file is closed while
the file system is mounted ro.  `make installworld' normally creates many
such files by unlinking the inodes for daemons and shared libraries.

Bruce

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