Merge pull request #67 from oracle-quickstart/update-nvme-raid-script

Update oke-nvme-raid.sh

Author: arnaudfroidmont

files/oke-nvme-raid.sh

@@ -8,7 +8,6 @@ level="${1:-0}"
 pattern="${2:-/dev/nvme*n1}"
 mount_primary="${3:-/mnt/nvme}"
 mount_extra=(/var/lib/{containers,kubelet,logs/pods})
-md_device="/dev/md/0"
 
 # Enumerate NVMe devices, exit if absent
 devices=($pattern)
@@ -17,6 +16,23 @@ if [ ${#devices[@]} -eq 0 ]; then
   exit 0
 fi
 
+# Used for boot volume replacement - check if an array exists
+legacy_dev_paths=(/dev/md/0 /dev/md/0_0 /dev/md127)
+mdadm --assemble --scan --quiet || true
+
+md_device=""
+for cand in "${legacy_dev_paths[@]}"; do
+  if [[ -e $cand ]]; then
+    md_device="$cand"
+    break
+  fi
+done
+
+# If no device was found in the above loop, use default /dev/md/0
+if [[ -z "$md_device" ]]; then
+  md_device="/dev/md/0"
+fi
+
 # Determine config for detected device count and RAID level
 count=${#devices[@]}; bs=4; chunk=256
 stride=$((chunk/bs)) # chunk size / block size