shutdown: add hack workaround for broken dm/kernel

This is already fixed elsewhere, and eventually this hack needs to be
removed. However, for now, it seems that some kernels (3.4 and 3.0) will
hang on shutdown with the combination of systemd and lvm/crypt. Removing
evidence of udev being alive in /run seems to fix this.

Fixes FS#30995.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/shutdown b/shutdown
index fd88105..a9ac8c6 100644
--- a/shutdown
+++ b/shutdown
@@ -55,6 +55,10 @@ disassemble() {
     done
 }
 
+# XXX: Discourage libdevmapper from thinking that udev
+# might be in a useful state. FS#30995.
+rm -rf /run/udev
+
 printf '%s\n' 'Detaching loop devices.'
 
 for loop in loop*/loop; do