From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 13 Jul 2010 00:17:06 +0000 (+0200)
Subject: units: dm is an awful piece of work
X-Git-Tag: v3~17
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c9c5d0eb1af19804c583fffdb95ca38049b204c;p=systemd

units: dm is an awful piece of work
---

diff --git a/src/99-systemd.rules b/src/99-systemd.rules
index 003796e5..f7d99157 100644
--- a/src/99-systemd.rules
+++ b/src/99-systemd.rules
@@ -12,6 +12,10 @@ KERNEL=="ttyS*", TAG="systemd"
 
 SUBSYSTEM=="block", TAG="systemd"
 
+# DM finds it funny to create additional device nodes, we need to
+merge them here, so that we recognize identical devices.
+SUBSYSTEM=="block", ENV{DM_NAME}!="", ENV{SYSTEMD_ALIAS}="/dev/mapper/$env{DM_NAME}"
+
 # We need a hardware independent way to identify network devices. We
 # use the /sys/subsystem path for this. Current vanilla kernels don't
 # actually support that hierarchy right now, however upcoming kernels