Generate empty /lib/udev/rules.d/69-lvm-metad.rules instead of removing the file

Since lvm2 2.02.176-4 initramfs generation fails if
neither /etc/udev/rules.d/69-lvm-metad.rules nor
/lib/udev/rules.d/69-lvm-metad.rules exists.
So instead of removing the file just create an empty one.

See http://bugs.debian.org/881916

diff --git a/etc/grml/fai/config/scripts/GRMLBASE/50-lvm b/etc/grml/fai/config/scripts/GRMLBASE/50-lvm
index e94fc58..4cecce4 100755 (executable)
--- a/etc/grml/fai/config/scripts/GRMLBASE/50-lvm
+++ b/etc/grml/fai/config/scripts/GRMLBASE/50-lvm
@@ -14,8 +14,8 @@ if ! [ -r "${target}/lib/udev/rules.d/69-lvm-metad.rules" ] ; then
   exit 0
 fi
 
-echo "Removing /lib/udev/rules.d/69-lvm-metad.rules to avoid automatic LVM scanning"
-rm -f "${target}/lib/udev/rules.d/69-lvm-metad.rules"
+echo "Clearing /lib/udev/rules.d/69-lvm-metad.rules to avoid automatic LVM scanning"
+echo '# this file was generated by grml-live script GRMLBASE/50-lvm' > "${target}/lib/udev/rules.d/69-lvm-metad.rules"
 
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