ecs_dm_resolver.bash

#!/bin/bash

DEV="/dev/$1"
# `dmsetup info` is an option too, but needs root and still `find`
# is more interesting
DEVMAP=$(find -L /dev/mapper/ -samefile $DEV | sed -e "s/^\/dev\/mapper\///")

for containerid in $(docker ps -q); do
dockerdev=$(docker inspect --format='{{.GraphDriver.Data.DeviceName}}' $containerid)

if [ "$dockerdev" = "$DEVMAP" ]; then
taskdfn=$(docker inspect --format="{{ index .Config.Labels \"com.amazonaws.ecs.task-definition-family\"}}" $containerid)
echo -e "Containerid: $containerid\nTask definition:$taskdfn"
break
fi

done