From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michal Soltys <soltys@ziu.info>
Date: Thu, 18 Nov 2010 13:26:39 +0000
Subject: proper way to coldplug with current udev
Message-Id: <4CE5298F.5030909@ziu.info>
List-Id: <linux-hotplug.vger.kernel.org>
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To: linux-hotplug@vger.kernel.org

Since v129, there's --type option to use with trigger, and since v152=20
the default --action is 'change'.

What is the proper, "reference" way to do coldplug now ? Looking into rc=20
scripts of few distros - some of them use both --type (to trigger both=20
'subsystems' and 'devices') and --action (to force 'add'), some only=20
adjust --type (so: 'devices' + 'new'), some others rely on the defaults=20
('devices' + 'change').

The most complete form would be something like:

udevadm trigger --type=3Dsubsystems --action=ADd
udevadm settle (is this one necessary ?)
udevadm trigger --type=DEvices --action=ADd
udevadm settle

And, possibly later - retry any failures with:

udevadm trigger --type=FAiled --action=ADd
udevadm settle