return 1
	fi

	for ((i = 0; i < 20; i++)); do
		test -f ${WORK_DIR}/$1/1/.minio.sys/format.json
		v1=$?
		nextInES=$(($1 + 1)) && [ $nextInES -gt 3 ] && nextInES=1
		foundFiles1=$(find ${WORK_DIR}/$1/1/ | grep -v .minio.sys | grep xl.meta | wc -l)
		foundFiles2=$(find ${WORK_DIR}/$nextInES/1/ | grep -v .minio.sys | grep xl.meta | wc -l)
		test $foundFiles1 -eq $foundFiles2
		v2=$?
		[ $v1 == 0 -a $v2 == 0 ] && return 0

	fi

	if [ -n "$MAX_OPEN_FILES" ]; then
		ulimit -n $MAX_OPEN_FILES
	fi

	if [ -n "$MAX_LOCKED_MEMORY" ]; then
		ulimit -l $MAX_LOCKED_MEMORY
	fi

	if [ -n "$MAX_MAP_COUNT" -a -f /proc/sys/vm/max_map_count ]; then
		sysctl -q -w vm.max_map_count=$MAX_MAP_COUNT
	fi

	# Start Daemon

	while [ "$u" != "0" ]; do
		sudo umount ${WORK_DIR}/mnt/disk4/
		u=$?
		sleep 1
	done

	# Wait until MinIO self heal kicks in
	sleep 60

	if [ -f ${WORK_DIR}/mnt/disk4/.minio.sys/format.json ]; then
		echo "A root disk is formatted unexpectedely"
		cat "${WORK_DIR}/server4.log"
		exit -1
	fi
}

function cleanup() {
	pkill minio
	sudo umount ${WORK_DIR}/mnt/disk{1..3}/

if [[ "$TFCI_WHL_IMPORT_TEST_ENABLE" == "1" ]]; then
  "$python" -c 'import tensorflow as tf; t1=tf.constant([1,2,3,4]); t2=tf.constant([5,6,7,8]); print(tf.add(t1,t2).shape)'
  "$python" -c 'import sys; import tensorflow as tf; sys.exit(0 if "keras" in tf.keras.__name__ else 1)'
fi
# VERY basic check to ensure the [and-cuda] package variant is installable.
# Checks TFCI_BAZEL_COMMON_ARGS for "gpu" or "cuda", implying that the test is