#!/bin/bash
# wait until nbd is ready
APP_DIR="$(dirname "$0")"
NBD_READY="$APP_DIR/nbd-ready"
INTERVAL=0.5

TIMEOUT=$1
SECONDS=0

until $NBD_READY; do
	if [ "$TIMEOUT" ] && (( SECONDS >= "$TIMEOUT" )); then
		echo "Timeout waiting for NBD" >&2
		exit 1
	fi
	
	sleep $INTERVAL
done