shows which docker containers currently depend on a given docker volume

docker_volume_used_by.sh

#!/bin/bash

# shows which docker containers currently depend on a given docker volume

volume_name="${1}";

if [ -z "${volume_name}" ]; then
  echo "ERROR: require volume name as input parameter.";
  exit 1;
fi;

mountpoint="`docker volume inspect ${volume_name} 2>/dev/null | jq -r '.[].Mountpoint'`";

if [ -z "${mountpoint}" ]; then
  echo "ERROR: no volume found for name: ${volume_name}";
  exit 1;
fi;

docker ps -a --format "{{.ID}}\t{{.Names}}" | while read container_id container_name; do
  length="`docker inspect ${container_id} | jq '.[].Mounts | length'`";
  for (( c=0; c<${length}; c++ )); do
    source="`docker inspect ${container_id} | jq -r ".[].Mounts[${c}].Source"`";
    if [ "${source}" == "${mountpoint}" ]; then
      echo "${container_id} ${container_name}";
    fi;
  done;
done;