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From: Ruediger Meier <sweet_f_a@gmx.de>
To: util-linux@vger.kernel.org
Subject: BUG: umount --all-targets vs /etc/mtab
Date: Sun, 25 May 2014 02:16:47 +0200
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Hi,

umount --all-targets does not work if /etc/mtab is a regular file and not a 
link to /proc/mounts.

reproduce:
$ sudo mv /etc/mtab  /etc/mtab.orig 
$ sudo cp /proc/mounts /etc/mtab
$ sudo make check TS_OPTS="--parallel=1 mount" 

Test mount/umount-alltargets fails.
 
cu,
Rudi