From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthias Schwarzott <zzam@gentoo.org>
Date: Sun, 29 Nov 2009 19:08:15 +0000
Subject: sticky permissions of block devices
Message-Id: <200911292008.15575.zzam@gentoo.org>
List-Id: <linux-hotplug.vger.kernel.org>
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To: linux-hotplug@vger.kernel.org

Hi there!

Newer udev has an ugly behaviour regarding block devices.
Chown a blockdevice to some user and open it once.
udev will trigger a change event and reset the permissions back to root:disk.

The fastest solution I can propose is to restrict permission setting to 
ACTION="add", but is that a good choice?

The use-case I had was to allow a user to access /dev/sda for running qemu.

Regards
Matthias