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