don't use compression

lxc-backup.sh

@@ -79,20 +79,20 @@ start_backup() {
   local vm=$1
   local backup_base="$2"
   local destination="${backup_base}/${vm}"
-  local backup_name="${vm}_$(date +"%Y-%m-%d_%H-%M-%S").tar.gz"
+  local backup_name="${vm}_$(date +"%Y-%m-%d_%H-%M-%S").tar"
 
   [[ -d "$backup_base" ]] || { echo "${backup_base} is not a directory"; exit 1; }
   [[ -d "$destination" ]] || mkdir "$destination"
   [[ -f "${destination}/${backup_name}" ]] && { echo "Backup already exists"; return 2; }
 
-  lxc export "$vm" --instance-only "${destination}/${backup_name}" || { echo "Error exporting $vm"; return 1; }
+  lxc export "$vm" --instance-only --compression none "${destination}/${backup_name}" || { echo "Error exporting $vm"; return 1; }
 
   [[ -n "$run_cleanup" ]] && prune_backups "$destination"
 }
 
 prune_backups() {
   local backup_directory="$1"
-  mapfile -t backup_files < <(find "$backup_directory" -maxdepth 1 -name "*.tar.gz" -printf '%T@ %p\n' | sort -n | head -n "-${files_to_keep}" | cut -d' ' -f2-)
+  mapfile -t backup_files < <(find "$backup_directory" -maxdepth 1 -name "*.tar" -printf '%T@ %p\n' | sort -n | head -n "-${files_to_keep}" | cut -d' ' -f2-)
   
   if [[ ${#backup_files[@]} -gt 0 ]]; then
     echo "Removing ${#qcow2_files[@]} old backup files for $vm (keeping last $total_files_to_keep files)"