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Date:      Tue, 15 Mar 2005 15:30:46 -0800
From:      "Artem Koltsov" <Artem.Koltsov@wfinet.com>
To:        <freebsd-questions@freebsd.org>
Subject:   unionfs double mount reboots the system on 5.3-STABLE
Message-ID:  <1EA23548B834AB4E85CFCBB2C8EBA8880D0C91@SD-MAIL4.wfinet.com>

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I tried to build jails on top of one distribution and found the following=
=20problem.

How to repeat:

!!!!!WARNING: IT MAY REBOOT YOUR SYSTEM!!!!!

mkdir test
cd test
mkdir a
mkdir a-ro
mkdir a-ro-rw
echo "aaaa" >> a/file1
mount -v -t unionfs -o ro ~/test/a ~/test/a-ro
mount -v -t unionfs -o -b ~/test/a-ro ~/test/a-ro-rw
vi a-ro-rw/file1   ##### <<<<<<< will reboot here

mount before reboot:
<above>:/root/test/a on /root/test/a-ro (unionfs, local, read-only, noclu=
sterw)
<below>:/root/test/a-ro on /root/test/a-ro-rw (unionfs, noclusterw)

uname -a
FreeBSD local.local.internal 5.3-STABLE FreeBSD 5.3-STABLE #14: Sat Feb 2=
6 19:09:37 EST 2005     root@local.local.internal:/usr/obj/usr/src/sys/CU=
STOM  i386

Can anyone repeat it and let me know if you have the same result? Any sug=
gestions what it could be?

Thanks!

Artem Koltsov
Resource Management
Wireless Facilities, Inc.

=A0
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