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-rw-r--r--src/99-systemd.rules4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/99-systemd.rules b/src/99-systemd.rules
index 003796e590..f7d99157f2 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