diff --git a/usr/share/rear/lib/layout-functions.sh b/usr/share/rear/lib/layout-functions.sh

index aa6fc938..4bc59131 100644

--- a/usr/share/rear/lib/layout-functions.sh

+++ b/usr/share/rear/lib/layout-functions.sh

@@ -478,6 +478,9 @@ get_sysfs_name() {

 ###     /dev/dm-3 -> /dev/mapper/system-tmp

 ###     /dev/dm-4 -> /dev/mapper/oralun

 ###     /dev/dm-5 -> /dev/mapper/oralunp1

+###     /dev/sda -> /dev/sda

+###

+### Returns 0 on success, 1 if device is not existing

 get_device_name() {

     ### strip common prefixes

     local name=${1#/dev/}

@@ -485,47 +488,39 @@ get_device_name() {

     contains_visible_char "$name" || BugError "Empty string passed to get_device_name"

-    ### Translate dm-8 -> mapper/test

-    local device dev_number mapper_number

-    if [[ -d /sys/block/$name ]] ; then

+    if [[ "$name" =~ ^mapper/ ]]; then

+        echo "/dev/$name"

+        return 0

+    fi

+

+    if [[ -L "/dev/$name" ]] ; then

+        # Map vg/lv into dm-X, which will then be resolved later

+        name="$( basename $(readlink -f /dev/$name) )"

+    fi

+

+    if [[ "$name" =~ ^dm- ]] ; then

+        local device

         if [[ -r /sys/block/$name/dm/name ]] ; then

             ### recent kernels have a dm subfolder

-            echo "/dev/mapper/$( < /sys/block/$name/dm/name)";

-            return 0

+            device="$( < /sys/block/$name/dm/name )"

         else

-            ### loop over all block devices

-            dev_number=$( < /sys/block/$name/dev)

-            for device in /dev/mapper/* ; do

-                mapper_number=$(dmsetup info -c --noheadings -o major,minor ${device#/dev/mapper/} 2>/dev/null )

-                if [ "$dev_number" = "$mapper_number" ] ; then

-                    echo "$device"

-                    return 0

-                fi

-            done

+            local dev_number=$( < /sys/block/$name/dev)

+            if [[ ! -r "$TMP_DIR/dmsetup_info.txt" ]] ; then

+                dmsetup info --noheadings -c -o name,major,minor > "$TMP_DIR/dmsetup_info.txt"

+            fi

+            device="$( awk -F ':' "/$dev_number\$/ { print \$1 }" < "$TMP_DIR/dmsetup_info.txt" )"

+            [[ -n "$device" ]] || BugError "No device returned for major/minor $dev_number"

         fi

-    fi

-

-    ### Translate device name to mapper name. ex: vg/lv -> mapper/vg-lv

-    if [[ "$name" =~ ^mapper/ ]]; then

-        echo "/dev/$name"

+        echo "/dev/mapper/$device"

         return 0

     fi

-    if my_dm=`readlink /dev/$name`; then

-       for mapper_dev in /dev/mapper/*; do

-           if mapper_dm=`readlink $mapper_dev`; then

-              if [ "$my_dm" = "$mapper_dm" ]; then

-                 echo $mapper_dev

-                 return 0

-              fi

-           fi

-       done

-    fi

     ### handle cciss sysfs naming

     name=${name//!//}

     ### just return the possibly nonexisting name

     echo "/dev/$name"

+    [[ -r "/dev/$name" ]] && return 0

     return 1

 }

diff --git a/usr/share/rear/rescue/GNU/Linux/270_fc_transport_info.sh b/usr/share/rear/rescue/GNU/Linux/270_fc_transport_info.sh

index 0de4f60b..64276dfe 100644

--- a/usr/share/rear/rescue/GNU/Linux/270_fc_transport_info.sh

+++ b/usr/share/rear/rescue/GNU/Linux/270_fc_transport_info.sh

@@ -1,3 +1,6 @@

+# don't collect this anymore, this can be very slow

+return 0

+

 # collect output from production SAN disks

 find /sys/class/fc_transport -follow -maxdepth 6 \( -name model -o -name vendor -o -name rev -name state -o -name model_name -o -name size -o -name node_name \) 2>/dev/null| egrep -v 'driver|rport|power|drivers|devices' | xargs grep '.' > $VAR_DIR/recovery/fc_transport.info  >&2