Date: Mon, 02 Jan 2006 09:51:42 +0200 From: Danny Braniss <danny@cs.huji.ac.il> To: Dario Freni <saturnero@freesbie.org> Cc: freebsd-hackers@freebsd.org, freebsd-current@freebsd.org, daichi@freebsd.org Subject: Re: [unionfs][patch] improvements of the unionfs - Problem Report, kern/91010 Message-ID: <E1EtKTm-0002vl-Ku@cs1.cs.huji.ac.il> In-Reply-To: Your message of Thu, 29 Dec 2005 17:07:34 %2B0100 .
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> Masanori OZAWA wrote:
> [...]
>
> Nice work! This is just a "works for me". In only find some issues with
> permissions that were already present in the previous implementation of
> unionfs. Some of them are partially corrected in the "useful" copymode.
> I mailed the details to the author.
the following will hang the kernel:
root is mounted nfs,
/etc is unionfs'ed so:
from /etc/rc.initdiskless:
...
# Create a generic memory disk
#
mount_md() {
/sbin/mdmfs -i 4096 -s $1 -M md $2
}
kldload unionfs
mount_md 4096 /.etc
mount_unionfs /.etc /etc
...
and now:
cd /etc
mv some-file somefile
and now the system is stuck.
this behaviour is also present in the unpatched unionfs, but would be nice
if it can be fixed.
danny
ps: see http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/84107
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