[dm-devel] [PATCH 03/11] kpartx_id: Generate persistent symlinks for 'wwn'

[Hannes Reinecke]

Newer udev versions generate /dev/disk/by-id/wwn-* symlinks.
We should be adjusting those for multipathing, too.

Signed-off-by: Hannes Reinecke <hare at suse.de>
---
 kpartx/kpartx.rules |    4 ++++
 kpartx/kpartx_id    |    2 ++
 2 files changed, 6 insertions(+)

diff --git a/kpartx/kpartx.rules b/kpartx/kpartx.rules
index 8640094..b96ec89 100644
--- a/kpartx/kpartx.rules
+++ b/kpartx/kpartx.rules
@@ -20,12 +20,16 @@ ENV{DM_UUID}=="mpath-*", \
 	SYMLINK+="disk/by-id/$env{DM_TYPE}-$env{DM_NAME}"
 ENV{DM_MPATH}=="?*", ENV{DM_PART}!="?*", \
 	SYMLINK+="disk/by-id/$env{DM_TYPE}-$env{DM_MPATH}"
+ENV{DM_WWN}=="?*", ENV{DM_PART}!="?*", \
+	SYMLINK+="disk/by-id/wwn-$env{DM_WWN}"
 
 # Create persistent links for partitions
 ENV{DM_PART}=="?*", \
         SYMLINK+="disk/by-id/$env{DM_TYPE}-$env{DM_NAME}-part$env{DM_PART}"
 ENV{DM_MPATH}=="?*", ENV{DM_PART}=="?*", \
 	SYMLINK+="disk/by-id/$env{DM_TYPE}-$env{DM_MPATH}-part$env{DM_PART}"
+ENV{DM_WWN}=="?*", ENV{DM_PART}=="?*", \
+	SYMLINK+="disk/by-id/wwn-$env{DM_WWN}-part$env{DM_PART}"
 
 # Create dm tables for partitions
 ENV{DM_STATE}!="SUSPENDED", ENV{DM_UUID}=="mpath-*", \
diff --git a/kpartx/kpartx_id b/kpartx/kpartx_id
index afb589c..47fab1a 100644
--- a/kpartx/kpartx_id
+++ b/kpartx/kpartx_id
@@ -69,6 +69,7 @@ elif [ "$dmtbl" = "mpath" ] ; then
     if [ -n "$DM_NAME" -a "$DM_NAME" != "$dmuuid" ] ; then
 	echo "DM_MPATH=$dmuuid"
     fi
+    dmname="$dmuuid"
     # We need the dependencies of the table to figure out the type
     dmdeps=$($DMSETUP deps -u $UUID)
 elif [ "$dmtbl" = "dmraid" ] ; then
@@ -92,6 +93,7 @@ if [ -n "$dmdeps" ] ; then
 	    ;;
 	*)
             echo "DM_TYPE=scsi"
+	    echo "DM_WWN=0x${dmname#?}"
 	    ;;
     esac
 else
-- 
1.7.10.4