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#!/bin/bash | |
[[ "$(id -u)" -eq 0 ]] || (echo "Got root?" ; exit 5) | |
command -v btrfs > /dev/null || (echo "Command not found: btrfs" ; exit 4) | |
for folder in $* ; do | |
mount | awk '{print $3}' | grep "$(pwd)/${folder}" && echo "${folder} has a submount?" && exit 1 | |
btrfs sub list . | grep "${PWD##*/}/${folder}" && echo "${folder} has a subvolume?" && exit 2 | |
[ -e ${folder}.temp ] && echo "${folder}.temp already exists?" && exit 3 || true | |
mv ${folder} ${folder}.temp | |
btrfs sub create ${folder} | |
USER=$(stat -c '%U' ${folder}.temp) | |
GROUP=$(stat -c '%G' ${folder}.temp) | |
chown ${USER}.${GROUP} ${folder} | |
cp -a --reflink=always ${folder}.temp/. ${folder}/ | |
echo "Delete ${folder}.temp/ if happy with ${folder}/" | |
done |
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