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#!/bin/bash
# Please read the README.md distributed along this script
#set -x
ALL_VOLS=`docker volume ls --format '{{.Name}}'`
TEMP_VOLS=
SKIP_VOLS=
VOLS=
if [ "$#" -eq 0 ]; then
echo ""
echo "-----------------------------------------"
echo "Usage: $0"
echo "--single-vol [VOLUME] You can explicitly include a volume (can occur multiple times)"
echo "--exclude-vol [VOLUME] You can explicitly exclude a volume (can occur multiple times)"
echo "--all-vol This will backup all volumes (as reported by 'docker volume ls')"
echo "-----------------------------------------"
echo ""
exit
fi
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
--all-vol)
TEMP_VOLS+=$ALL_VOLS
shift
;;
--single-vol)
TEMP_VOLS+=" $2"
shift
shift
;;
--exclude-vol)
SKIP_VOLS+=" $2"
shift
shift
;;
esac
done
#TODO: fix this inefficient shit!
for v in $TEMP_VOLS; do
SKIP="0"
for t in $VOLS; do
#echo "test $v agains $t"
if [ "$t" == $v ]; then
# echo "skip"
SKIP=1
fi
done
for t in $SKIP_VOLS; do
#echo "test $v agains $t"
if [ "$t" == $v ]; then
# echo "skip"
SKIP=1
fi
done
if [ "$SKIP" == "0" ]; then
# echo "add $v"
VOLS+=" $v"
fi
done
for v in $VOLS; do
TIMESTAMP=`date +"%Y%m%d_%H%M%S"`
FILENAME=${TIMESTAMP}_volume_$v.tar.gz
echo " +--> backing up volume: $v to file: $FILENAME"
docker run --rm -it -v $v:/IN:ro -v `pwd`:/OUT bash tar -C /IN -czf /OUT/$FILENAME .
done
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