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From f77d58374ccd2e3d9c886e59020f1b32e97f2bdc Mon Sep 17 00:00:00 2001
From: Michal Sekletar <msekletar@users.noreply.github.com>
Date: Mon, 29 Aug 2016 14:49:20 +0200
Subject: [PATCH] units: remove udev control socket when systemd stops the
socket unit (#49)
Mere presence of the socket in the filesystem makes
udev_queue_get_udev_is_active() return that udev is running. Note that,
udev on exit doesn't unlink control socket nor does systemd. Thus socket
stays around even when both daemon and socket are stopped. This causes
problems for cryptsetup because when it detects running udev it launches
synchronous operations that *really* require udev. This in turn may
cause blocking and subsequent timeout in systemd-cryptsetup on reboot
while machine is in a state that udev and its control socket units are
stopped, e.g. emergency mode.
Fixes #2477
Cherry-picked from: a2de10775194edec51b1e88d20a380724a3dc716
Resolves: #1370133
---
units/systemd-udevd-control.socket | 1 +
1 file changed, 1 insertion(+)
diff --git a/units/systemd-udevd-control.socket b/units/systemd-udevd-control.socket
index 8330a1c035..46f704ed79 100644
--- a/units/systemd-udevd-control.socket
+++ b/units/systemd-udevd-control.socket
@@ -17,3 +17,4 @@ Service=systemd-udevd.service
ListenSequentialPacket=/run/udev/control
SocketMode=0600
PassCredentials=yes
+RemoveOnStop=yes