Synnefo » Ganeti Instance Image

  # if something fails here, it souldn't call cleanup again...

  trap - EXIT

        # If something fails here, it's better to retry it for a few times

        # before we give up with an error. This is needed for kpartx when

        # dealing with ntfs partitions mounted through fuse. umount is not

        # synchronous and may return while the partition is still busy. A

        # premature attempt to delete partition mappings through kpartx on a

        # device that hosts previously mounted ntfs partition may fail with an 

        # `device-mapper: remove ioctl failed: Device or resource busy'

        # error. A sensible workaround for this is to wait for a while and then

        # try again.

        local cmd=${CLEANUP[$i]}

        $cmd || for interval in 0.25 0.5 1 2 4; do

            echo "Command $cmd failed!"

            echo "I'll wait for $interval secs and will retry..."

            sleep $interval

            $cmd && break

        done

        test $? -eq 1 && { echo "Giving Up..."; exit 1; }

  echo "Clean UP executed"