NeilBrown: Update udev rules for hotplug support.

Martin F. Krafft madduck at
Sun Aug 29 11:54:56 UTC 2010

Module: mdadm
Branch: fixes/udev-blkid
Commit: 7efa6bc34ff0357a491e64495a9b3a7483971000

Author: NeilBrown <neilb at>
Date:   Wed Jun 30 16:55:17 2010 +1000

Update udev rules for hotplug support.

- split the rules for handling components of array to be clearly
  separate from rules for handling the arrays themselves.
- add call to "-If" when removing a device
- uncomment the --incremental call when adding a device.

Signed-off-by: NeilBrown <neilb at>


 udev-md-raid.rules |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/udev-md-raid.rules b/udev-md-raid.rules
index c9a4f0e..da52058 100644
--- a/udev-md-raid.rules
+++ b/udev-md-raid.rules
@@ -1,13 +1,13 @@
 # do not edit this file, it will be overwritten on update
 SUBSYSTEM!="block", GOTO="md_end"
-ACTION!="add|change", GOTO="md_end"
-ACTION=="change", GOTO="md_no_incr"
-# import data from a raid member and activate it
-#ENV{ID_FS_TYPE}=="linux_raid_member", IMPORT{program}="/sbin/mdadm --examine --export $tempnode", RUN+="/sbin/mdadm --incremental $env{DEVNAME}"
-# import data from a raid set
+# handle potential components of arrays
+ENV{ID_FS_TYPE}=="linux_raid_member", ACTION=="remove", RUN+="/sbin/mdadm -If $name"
+ENV{ID_FS_TYPE}=="linux_raid_member", ACTION=="add", RUN+="/sbin/mdadm --incremental $env{DEVNAME}"
+# handle md arrays
+ACTION!="add|change", GOTO="md_end"
 KERNEL!="md*", GOTO="md_end"
 # partitions have no md/{array_state,metadata_version}, but should not

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