Cleanup libvirt snapshots

clean_virsh_snapshots.sh

#!/bin/bash

set -e

DRYRUN=true

[ $# -lt 2 ] && echo "Usage: $0 <domain> <keep>" && exit 1

DOMAIN=$1
KEEP=$2

SNAPSHOTS=$(virsh snapshot-list ${DOMAIN} --name | grep -v '^$' | sort -n)
COUNT=$(echo "$SNAPSHOTS" | wc -l)

if [ "$COUNT" -gt $KEEP ]; then
	OLD=$(echo "$SNAPSHOTS" | tail +$((KEEP+1)))
	for s in $OLD; do
		echo "Removing ${DOMAIN} snapshot '$s'" | logger
		if [ "$DRYRUN" == false ]; then
			virsh snapshot-delete $DOMAIN $s
		fi
	done
fi