2026-03-12 20:51:59

2026-03-12 21:51:59 +01:00
parent 92a93d2634
commit 4c51d00919
35 changed files with 1925 additions and 0 deletions
--- a/bash/vmclone.sh
+++ b/bash/vmclone.sh
@@ -0,0 +1,111 @@
+#!/usr/bin/bash
+
+function usage {
+  echo "Usage: vmclone -s|--source <SOURCE_VM> -t|--target <TARGET_VM> -o|--scriptonly"
+  echo "  o| --scriptonly, only clone script is generated, the clone command will not be executed"
+}
+
+########
+# MAIN #
+########
+
+typeset SOURCE_VM
+typeset TARGET_VM
+typeset SCRIPTONLY
+typeset CLONESCRIPT="/tmp/kvmclone.sh"
+typeset -i DISK_COUNT_SOURCE
+typeset -i I
+typeset RC
+typeset REPLACE
+
+# parameter processing
+while [ "$1" != "" ]; do
+    case $1 in
+        -s | --source )         shift
+                                SOURCE_VM="$1"
+                                ;;
+        -t | --target )         shift
+                                TARGET_VM="$1"
+                                ;;
+        -o | --scriptonly )     SCRIPTONLY=true
+                                ;;                               
+        -r | --replace )        REPLACE=true
+                                ;;   
+        -h | --help )           usage
+                                exit
+                                ;;
+        * )                     usage
+                                exit 1
+    esac
+    shift
+done
+
+
+if [ -z "$SOURCE_VM" ] || [ -z "$TARGET_VM" ]; then
+  usage
+  exit
+fi
+
+# check if source VM exists
+I=$(virsh list --all | grep $SOURCE_VM | wc -l)
+if (( I == 0 )); then
+	echo "Source VM ($SOURCE_VM) does not exists"
+	exit 1
+fi
+
+# check if source VM is shut off
+RC=$(virsh domstate $SOURCE_VM)
+if [ "$RC" != "shut off" ]; then
+	echo "Source VM ($SOURCE_VM) is $RC, please shut it down first"
+	exit 1
+fi
+
+# check if target VM exists
+I=$(virsh list --all | grep $TARGET_VM | wc -l)
+if (( I > 0 )); then
+	# -r|--replace option was used
+	if [ "$REPLACE" == true ] ; then
+		# destroy the VM and the underlayng storage
+		echo "Shutdown VM $TARGET_VM"
+		virsh destroy $TARGET_VM > /dev/null 2>&1
+		echo "Remove VM $TARGET_VM"
+		virsh undefine $TARGET_VM --remove-all-storage > /dev/null 2>&1
+	else
+	  echo "Target VM ($TARGET_VM) already exists, use -r|--replace option to replace it"
+	  exit 1		
+	fi
+fi
+
+# generate KVM clone shell
+rm -rf $CLONESCRIPT
+echo -e "#!/usr/bin/bash"'\n' >> $CLONESCRIPT
+chmod +x $CLONESCRIPT
+
+echo "virt-clone \\" >> $CLONESCRIPT
+echo "  --original $SOURCE_VM \\" >> $CLONESCRIPT
+echo "  --name $TARGET_VM \\" >> $CLONESCRIPT
+
+DISK_COUNT_SOURCE=$(virsh domblklist ${SOURCE_VM} --details | grep -v cdrom | grep "file" | wc -l)
+
+I=0
+for DISK in $(virsh domblklist ${SOURCE_VM} --details | grep -v cdrom | grep "file" | awk -F " " '{ print $4}')
+do
+  I=$((I+1))
+  NEWDISK=${DISK/$SOURCE_VM/$TARGET_VM}
+  if (( I < DISK_COUNT_SOURCE )); then
+    echo "  --file $NEWDISK \\" >> $CLONESCRIPT
+  else
+    echo "  --file $NEWDISK" >> $CLONESCRIPT
+  fi
+done
+
+echo "KVM clone script [$SOURCE_VM -> $TARGET_VM] has been generated: $CLONESCRIPT"
+
+if [ "$SCRIPTONLY" != true ] ; then
+	# recreate VM storage directories
+	cat $CLONESCRIPT | grep '\-\-file' | xargs -I{} echo {} | sed "s/--file//g" |  sed 's/ //g' | xargs -I{} dirname {} | sort -u | xargs -I{} rm -rf {}
+	cat $CLONESCRIPT | grep '\-\-file' | xargs -I{} echo {} | sed "s/--file//g" |  sed 's/ //g' | xargs -I{} dirname {} | sort -u | xargs -I{} mkdir -p {}
+	# Run generated KVM clone shell
+	echo "Executing $CLONESCRIPT.."
+    $CLONESCRIPT
+fi