122 lines
3.1 KiB
Bash
122 lines
3.1 KiB
Bash
#!/bin/bash
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make_subvol() {
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local usesudo
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local uid
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local gid
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[[ $EUID -ne 0 ]] && usesudo=sudo
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uid=${2:-$USER}
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gid=${3:-$uid}
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echo $usesudo btrfs subvolume create $1
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$usesudo btrfs subvolume create $1
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echo $usesudo chown $uid:$gid $1
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$usesudo chown $uid:$gid $1
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}
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make_base_subvols() {
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svols="shell admin opt data docker images temp"
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BTRFSDATAROOT=${BTRFSDATAROOT:-/mnt/data}
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# cd $BTRFSDATAROOT || exit
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for svol in $svols; do
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make_subvol $BTRFSDATAROOT/$svol $@
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done
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}
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#ssudo mount -o subvol=opt /dev/sda4 /test
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alias btvl="sudo btrfs subvolume list"
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snapshot_restore () {
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local src=$1
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local dest=$2
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local name=${3:-$(echo $src| rev | cut -f 2- -d '.' | rev)}
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local usesudo
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echo copying $src at $PWD to $2 then renaming to $name
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# TODO check for snapshot, strip volume from source path, remove extra snapshot when done
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[[ $EUID -ne 0 ]] && usesudo=sudo
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$usesudo btrfs send $src | $usesudo btrfs -q receive $dest
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# cd $2 || return
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$usesudo btrfs subvolume snapshot $dest/$src $dest/$name
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# todo check for snapshot then delete transfered one
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}
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# ALL ALL = (root) NOPASSWD:/bin/btrfs
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subvolume_size () {
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local all;
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[[ $1 == "-a" ]] && all=true
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if [[ $all ]]; then
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sudo btrfs qgroup show "${2:-$PWD}" --kbytes | tail -n +3
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str=$(sudo btrfs qgroup show "${2:-$PWD}" --kbytes | tail -n +3);
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else
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sudo btrfs qgroup show "${2:-$PWD}" --kbytes | grep $1
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str=$(sudo btrfs qgroup show "${2:-$PWD}" --kbytes | grep $1)
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fi
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# echo $str
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subvolumeFolderSize=0;
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while read line; do
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FIELDS=( $line )
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thisLineKb="${FIELDS[2]/'.00KiB'/''}";
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# echo $thisLineKb
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subvolumeFolderSize=$((subvolumeFolderSize+thisLineKb));
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done <<< "$str"
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[[ $all ]] && echo "size of entire filesystem at ${2:-$PWD}" || echo size of subvolumes/snapshots $1 at "${2:-$PWD}"
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echo $subvolumeFolderSize KB
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echo "~ $((subvolumeFolderSize/1024)) MB"
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echo "~ $((subvolumeFolderSize/1024/1024)) GB"
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}
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find_subvolumes() {
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dir=${1:-.}
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dep=${2:-1}
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sudo /bin/find "$dir" -maxdepth $dep -type d -exec bash -c '
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for d do
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subv=$(basename $d)
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sudo btrfs subvolume show "$d" >/dev/null 2>&1 && printf "%s\n" "$subv"
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done' find-sh {} +
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}
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folder_snapshot() {
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for sv in $(find_subvolumes $1 1); do
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if [[ -d $2/$sv ]]; then
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echo snapshot $sv already exists in $2. You must manually delete target snapshots!
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else
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sudo btrfs sub snap $1/$sv $2
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fi
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done
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}
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# sudo find / -type d -exec sh -c '
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# for d do
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# btrfs subvolume show "$d" >/dev/null 2>&1 && printf "%s\n" "$d"
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# done' find-sh {} +
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# You may want to exclude paths that are beyond suspicion. The following code excludes /proc, /sys and /dev:
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# sudo find / -type d \( \
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# \( -path /proc -prune \) -o \
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# \( -path /sys -prune \) -o \
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# \( -path /dev -prune \) -o \
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# \( -exec sh -c '
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# for d do
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# btrfs subvolume show "$d" >/dev/null 2>&1 && printf "%s\n" "$d"
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# done
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# ' find-sh {} + \) \)
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mount_subvolume () {
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echo sudo mount $1 -o subvol=$2 $3
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if mountpoint $3; then
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echo $3 already a mountpoint, aborting subvolume mount
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else
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mkdir -p $3
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sudo mount $1 -o subvol=$2 $3
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fi
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} |