#481 Issue `closed`: grub failed with wrong mdadm metadata version¶

Labels: bug

tbsky opened issue at 2014-10-17 15:39:¶

hi:
rhel6 use legacy grub and can not boot madam metadata 1.2 with software raid 1.but "rear recover" use mdadm default to create software raid1 (which is metadata 1.2). grub can not install under this situation.

patch below. sorry I will try to use pull requests next time. it seems a little overskilled for a small patch.

--- 21_raid_layout.sh.orig      2012-03-30 16:37:30.000000000 +0800
+++ 21_raid_layout.sh   2014-10-17 20:37:49.727538398 +0800
@@ -18,6 +18,7 @@
             mdadm --misc --detail $device > $TMP_DIR/mdraid

             # Gather information
+            metadata=$( grep "Version" $TMP_DIR/mdraid | tr -d " " | cut -d ":" -f "2")
             level=$( grep "Raid Level" $TMP_DIR/mdraid | tr -d " " | cut -d ":" -f "2")
             uuid=$( grep "UUID" $TMP_DIR/mdraid | tr -d " " | cut -d "(" -f "1" | cut -d ":" -f "2-")
             layout=$( grep "Layout" $TMP_DIR/mdraid | tr -d " " | cut -d ":" -f "2")
@@ -56,6 +57,7 @@
             done

             # prepare for output
+            metadata=" metadata=$metadata"
             level=" level=$level"
             ndevices=" raid-devices=$ndevices"
             uuid=" uuid=$uuid"
@@ -84,7 +86,7 @@
                 name=""
             fi

-            echo "raid ${device}${level}${ndevices}${uuid}${name}${sparedevices}${layout}${chunksize}${devices}"
+            echo "raid ${device}${metadata}${level}${ndevices}${uuid}${name}${sparedevices}${layout}${chunksize}${devices}"

             extract_partitions "$device"
         done < <(mdadm --detail --scan --config=partitions)