Blame SOURCES/rear-bz1672938.patch

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diff --git a/usr/share/rear/lib/layout-functions.sh b/usr/share/rear/lib/layout-functions.sh
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index aa6fc938..4bc59131 100644
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--- a/usr/share/rear/lib/layout-functions.sh
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+++ b/usr/share/rear/lib/layout-functions.sh
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@@ -478,6 +478,9 @@ get_sysfs_name() {
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 ###     /dev/dm-3 -> /dev/mapper/system-tmp
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 ###     /dev/dm-4 -> /dev/mapper/oralun
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 ###     /dev/dm-5 -> /dev/mapper/oralunp1
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+###     /dev/sda -> /dev/sda
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+###
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+### Returns 0 on success, 1 if device is not existing
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 get_device_name() {
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     ### strip common prefixes
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     local name=${1#/dev/}
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@@ -485,47 +488,39 @@ get_device_name() {
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     contains_visible_char "$name" || BugError "Empty string passed to get_device_name"
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-    ### Translate dm-8 -> mapper/test
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-    local device dev_number mapper_number
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-    if [[ -d /sys/block/$name ]] ; then
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+    if [[ "$name" =~ ^mapper/ ]]; then
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+        echo "/dev/$name"
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+        return 0
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+    fi
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+
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+    if [[ -L "/dev/$name" ]] ; then
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+        # Map vg/lv into dm-X, which will then be resolved later
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+        name="$( basename $(readlink -f /dev/$name) )"
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+    fi
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+
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+    if [[ "$name" =~ ^dm- ]] ; then
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+        local device
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         if [[ -r /sys/block/$name/dm/name ]] ; then
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             ### recent kernels have a dm subfolder
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-            echo "/dev/mapper/$( < /sys/block/$name/dm/name)";
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-            return 0
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+            device="$( < /sys/block/$name/dm/name )"
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         else
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-            ### loop over all block devices
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-            dev_number=$( < /sys/block/$name/dev)
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-            for device in /dev/mapper/* ; do
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-                mapper_number=$(dmsetup info -c --noheadings -o major,minor ${device#/dev/mapper/} 2>/dev/null )
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-                if [ "$dev_number" = "$mapper_number" ] ; then
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-                    echo "$device"
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-                    return 0
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-                fi
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-            done
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+            local dev_number=$( < /sys/block/$name/dev)
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+            if [[ ! -r "$TMP_DIR/dmsetup_info.txt" ]] ; then
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+                dmsetup info --noheadings -c -o name,major,minor > "$TMP_DIR/dmsetup_info.txt"
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+            fi
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+            device="$( awk -F ':' "/$dev_number\$/ { print \$1 }" < "$TMP_DIR/dmsetup_info.txt" )"
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+            [[ -n "$device" ]] || BugError "No device returned for major/minor $dev_number"
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         fi
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-    fi
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-
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-    ### Translate device name to mapper name. ex: vg/lv -> mapper/vg-lv
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-    if [[ "$name" =~ ^mapper/ ]]; then
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-        echo "/dev/$name"
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+        echo "/dev/mapper/$device"
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         return 0
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     fi
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-    if my_dm=`readlink /dev/$name`; then
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-       for mapper_dev in /dev/mapper/*; do
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-           if mapper_dm=`readlink $mapper_dev`; then
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-              if [ "$my_dm" = "$mapper_dm" ]; then
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-                 echo $mapper_dev
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-                 return 0
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-              fi
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-           fi
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-       done
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-    fi
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     ### handle cciss sysfs naming
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     name=${name//!//}
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     ### just return the possibly nonexisting name
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     echo "/dev/$name"
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+    [[ -r "/dev/$name" ]] && return 0
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     return 1
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 }
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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
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index 0de4f60b..64276dfe 100644
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--- a/usr/share/rear/rescue/GNU/Linux/270_fc_transport_info.sh
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+++ b/usr/share/rear/rescue/GNU/Linux/270_fc_transport_info.sh
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@@ -1,3 +1,6 @@
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+# don't collect this anymore, this can be very slow
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+return 0
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+
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 # collect output from production SAN disks
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 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