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docker-cleanup-volumes.sh
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docker-cleanup-volumes.sh
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#! /bin/bash
set -eou pipefail
#usage: sudo ./docker-cleanup-volumes.sh [--dry-run]
docker_bin="$(which docker.io 2> /dev/null || which docker 2> /dev/null)"
# Default dir
dockerdir=/var/lib/docker
# Look for an alternate docker directory with -g/--graph option
dockerpid=$(ps ax | grep "$docker_bin" | grep -v grep | awk '{print $1; exit}') || :
if [[ -n "$dockerpid" && $dockerpid -gt 0 ]]; then
next_arg_is_dockerdir=false
while read -d $'\0' arg
do
if [[ $arg =~ ^--graph=(.+) ]]; then
dockerdir=${BASH_REMATCH[1]}
break
elif [ $arg = '-g' ]; then
next_arg_is_dockerdir=true
elif [ $next_arg_is_dockerdir = true ]; then
dockerdir=$arg
break
fi
done < /proc/$dockerpid/cmdline
fi
dockerdir=$(readlink -f "$dockerdir")
volumesdir=${dockerdir}/volumes
vfsdir=${dockerdir}/vfs/dir
allvolumes=()
dryrun=false
verbose=false
function log_verbose() {
if [ "${verbose}" = true ]; then