import files

2021-02-09 17:05:00 +01:00
parent f5c4576411
commit 44a6d37ba5
425 changed files with 23195 additions and 0 deletions
@@ -0,0 +1,144 @@
+#! /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
+        echo "$1"
+    fi;
+}
+
+function delete_volumes() {
+  local targetdir=$1
+  echo
+  if [[ ! -d "${targetdir}" || ! "$(ls -A "${targetdir}")" ]]; then
+        echo "Directory ${targetdir} does not exist or is empty, skipping."
+        return
+  fi
+  echo "Delete unused volume directories from $targetdir"
+  local dir
+  while read -d $'\0' dir
+  do
+        dir=$(basename "$dir")
+        if [[ -d "${targetdir}/${dir}/_data" || "${dir}" =~ [0-9a-f]{64} ]]; then
+                if [ ${#allvolumes[@]} -gt 0 ] && [[ ${allvolumes[@]} =~ "${dir}" ]]; then
+                        echo "In use ${dir}"
+                else
+                        if [ "${dryrun}" = false ]; then
+                                echo "Deleting ${dir}"
+                                rm -rf "${targetdir}/${dir}"
+                        else
+                                echo "Would have deleted ${dir}"
+                        fi
+                fi
+        else
+                echo "Not a volume ${dir}"
+        fi
+  done < <(find "${targetdir}" -mindepth 1 -maxdepth 1 -type d -print0 2>/dev/null)
+}
+
+if [ $UID != 0 ]; then
+    echo "You need to be root to use this script."
+    exit 1
+fi
+
+if [ -z "$docker_bin" ] ; then
+    echo "Please install docker. You can install docker by running \"wget -qO- https://get.docker.io/ | sh\"."
+    exit 1
+fi
+
+while [[ $# > 0 ]]
+do
+    key="$1"
+
+    case $key in
+        -n|--dry-run)
+            dryrun=true
+        ;;
+        -v|--verbose)
+            verbose=true
+        ;;
+        *)
+            echo "Cleanup docker volumes: remove unused volumes."
+            echo "Usage: ${0##*/} [--dry-run] [--verbose]"
+            echo "   -n, --dry-run: dry run: display what would get removed."
+            echo "   -v, --verbose: verbose output."
+            exit 1
+        ;;
+    esac
+    shift
+done
+
+# Make sure that we can talk to docker daemon. If we cannot, we fail here.
+${docker_bin} version >/dev/null
+
+container_ids=$(${docker_bin} ps -a -q --no-trunc)
+
+#All volumes from all containers
+SAVEIFS=$IFS
+IFS=$(echo -en "\n\b")
+for container in $container_ids; do
+        #add container id to list of volumes, don't think these
+        #ever exists in the volumesdir but just to be safe
+        allvolumes+=${container}
+        #add all volumes from this container to the list of volumes
+        log_verbose "Inspecting container ${container}"
+        for volpath in $(
+                ${docker_bin} inspect --format='{{range $key, $val := .}}{{if eq $key "Volumes"}}{{range $vol, $path := .}}{{$path}}{{"\n"}}{{end}}{{end}}{{if eq $key "Mounts"}}{{range $mount := $val}}{{$mount.Source}}{{"\n"}}{{end}}{{end}}{{end}}' ${container} \
+        ); do
+                log_verbose "Processing volumepath ${volpath}"
+                #try to get volume id from the volume path
+                vid=$(echo "${volpath}" | sed 's|.*/\(.*\)/_data$|\1|;s|.*/\([0-9a-f]\{64\}\)$|\1|')
+                # check for either a 64 character vid or then end of a volumepath containing _data:
+                if [[ "${vid}" =~ ^[0-9a-f]{64}$ || (${volpath} =~ .*/_data$ && ! "${vid}" =~ "/") ]]; then
+                        log_verbose "Found volume ${vid}"
+                        allvolumes+=("${vid}")
+                else
+                        #check if it's a bindmount, these have a config.json file in the ${volumesdir} but no files in ${vfsdir} (docker 1.6.2 and below)
+                        for bmv in $(find "${volumesdir}" -name config.json -print | xargs grep -l "\"IsBindMount\":true" | xargs grep -l "\"Path\":\"${volpath}\""); do
+                                bmv="$(basename "$(dirname "${bmv}")")"
+                                log_verbose "Found bindmount ${bmv}"
+                                allvolumes+=("${bmv}")
+                                #there should be only one config for the bindmount, delete any duplicate for the same bindmount.
+                                break
+                        done
+                fi
+        done
+done
+IFS=$SAVEIFS
+
+delete_volumes "${volumesdir}"
+delete_volumes "${vfsdir}"