* Send udev events for arrays assembled by the mdadm-raid init.d script.

  This does not close #394193 but it's a good addition anyway. I am not
  sending these events from the initramfs as well because it would be
  non-trivial to ensure that an event doesn't get sent twice for a given
  array.

2 files changed, 19 insertions, 5 deletions

diff --git a/debian/changelog b/debian/changelog
index 8070259f..2b152aa1 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -16,11 +16,11 @@ mdadm (2.5.5-1) unstable; urgency=low
   * Now recommends module-init-tools.
   * Hides ugly errors during configuration in the absense of module-init-tools
     or initramfs-tools.
-  * Send udev events for all arrays assembled by the time the mdadm-raid
-    init.d script runs. This does not close #394193 but it's a good addition
-    anyway. I am not sending these events from the initramfs as well because
-    it would be non-trivial to ensure that an event doesn't get sent twice for
-    a given array.
+  * Send udev events for arrays assembled by the mdadm-raid init.d script.
+    This does not close #394193 but it's a good addition anyway. I am not
+    sending these events from the initramfs as well because it would be
+    non-trivial to ensure that an event doesn't get sent twice for a given
+    array.
   * Added more RAID10 information to the FAQ.
   * Added filters to logcheck for regular events, even by the md driver; also
     promoted messages about non-fresh components to security events.
diff --git a/debian/mdadm-raid b/debian/mdadm-raid
index 385db66d..ca76fcdc 100644
--- a/debian/mdadm-raid
+++ b/debian/mdadm-raid
@@ -81,6 +81,14 @@ is_true()
   esac
 }
 
+STATEDIR=/dev
+for dir in /lib/init/rw /dev/shm; do
+  test -d $dir/.mdadm && STATEDIR=$dir && break
+  test -w $dir || continue
+  STATEDIR=$dir
+done
+mkdir $STATEDIR/.mdadm 2>/dev/null && STATEDIR=$STATEDIR/.mdadm || unset STATEDIR
+
 case "${1:-}" in
   start)
     PREFIX="Assembling MD array"
@@ -161,8 +169,11 @@ case "${1:-}" in
 
         log_action_begin_msg "Generating udev events for MD arrays"
         for uevent in /sys/block/md*/uevent; do
+          array=${uevent#/sys/block/}; array=${dev%/uevent}
+          test -e $STATEDIR/$array && continue
           test -w $uevent || continue
           echo add > $uevent
+          : > $STATEDIR/$array
         done
         log_action_end_msg 0
 
@@ -220,6 +231,9 @@ case "${1:-}" in
           *) :;;
         esac
       done || exit $?
+
+      rm -rf $STATEDIR
+
     else
       log_notice "disabled in $DEBIANCONFIG"
     fi