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 8330a1c..46f704e 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