docker_volume_get_info.sh

#!/bin/bash

echo "List of docker volumes:"
echo

#Loop through all the data volumes
# $(docker volume ls -q) print the list of all the volume IDs
for docker_volume_id in $(docker volume ls -q); do
	echo "volume name/id: ${docker_volume_id}"

	#Obtain the size of the data volume by starting a docker container
	#that uses this data volume and determines the size of this data volume
	docker_volume_size=$(docker run --rm -t -v ${docker_volume_id}:/volume_data busybox sh -c "du -hs /volume_data | cut -f1")

	echo "	Size: ${docker_volume_size}"

	#Determine the number of stopped and running containers that
	#have a connection to this data volume
	num_related_containers=$(docker ps -a --filter=volume=${docker_volume_id} -q | wc -l)

	#If the number is non-zero, we show the information about the container and the image
	#and otherwise we show the message that are no connected containers
	if (($num_related_containers > 0)); then
		echo "	Connected containers:"
		docker ps -a --filter=volume=${docker_volume_id} --format "{{.Names}} [{{.Image}}] ({{.Status}})" | while read containerDetails; do
			echo "		${containerDetails}"
		done
	else
		echo "	No connected containers"
	fi

	echo
done