added del_subvol and named_snapshot
David Kebler
parent
61e61ac249
commit
195c34e80a
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@ -1,4 +1,11 @@
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#!/bin/bash
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export BTRFS_BIN=$(which btrfs)
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module_load confirm
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module_load helpers
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# set this for sudo
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# ALL ALL = (root) NOPASSWD:/bin/btrfs
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make_subvol() {
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local usesudo
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local uid
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@ -6,26 +13,38 @@ make_subvol() {
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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 $BTRFS_BIN subvolume create $1
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$usesudo $BTRFS_BIN 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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del_subvol() {
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local usesudo; local delete
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[[ $1 == "-d" ]] && delete=true && shift
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[[ $EUID -ne 0 ]] && usesudo=sudo
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if $usesudo $BTRFS_BIN subvolume show "$1" &> /dev/null; then
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if [[ -v PS1 && ! $delete ]]; then
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confirm "DELETE the subvolume $(realpath "$1") (pass -d to avoid confirm)" || return 1
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fi
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$usesudo $BTRFS_BIN subvolume delete $1
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else
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echo "$1 not a btrfs subvolume, nothing to delete"
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fi
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}
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# make_base_subvols() {
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# svols="shell admin opt data docker images temp"
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# BTRFSDATAROOT=${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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@ -34,23 +53,23 @@ snapshot_restore () {
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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 $dest
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$usesudo $BTRFS_BIN send $src | $usesudo $BTRFS_BIN -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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$usesudo $BTRFS_BIN 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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sudo $BTRFS_BIN qgroup show "${2:-$PWD}" --kbytes | tail -n +3
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str=$(sudo $BTRFS_BIN qgroup show "${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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sudo $BTRFS_BIN qgroup show "${2:-$PWD}" --kbytes | grep $1
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str=$(sudo $BTRFS_BIN qgroup show "${2:-$PWD}" --kbytes | grep $1)
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fi
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# echo $str
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@ -76,7 +95,7 @@ find_subvolumes() {
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sudo /bin/find "$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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sudo $BTRFS_BIN subvolume show "$d" >/dev/null 2>&1 && printf "%s\n" "$subv"
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done' find-sh {} +
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}
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@ -86,12 +105,55 @@ folder_snapshot() {
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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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sudo $BTRFS_BIN sub snap $1/$sv $2
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fi
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done
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}
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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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}
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named_snapshot () {
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local usage; local subvol; local target; local run; local usesudo
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[[ $1 == "-r" ]] && run=true && shift
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[[ $EUID -ne 0 ]] && usesudo=sudo
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subvol=$(realpath "$1")
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usage="usage: named_snapshot <-r> <subvolume/snapshot> <new extension name> <optional target directory>"
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if sudo $BTRFS_BIN subvolume show "$1" &> /dev/null; then
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# if [[ -v PS1 && ! $delete ]]; then
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[[ ! $2 ]] && echo no extension name for named snapshot && echo $usage && return 1
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if [[ $3 ]]; then
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[[ ! -d $3 ]] && echo "target directory $3 does not exist, can not make snapshot" && echo $usage && return 2
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target=$(realpath "$3")/$(basename "$(rm_ext "$subvol")").$2
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else
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target="$(rm_ext "$subvol").$2"
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fi
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[[ -v PS1 && ! $run ]] && confirm "make snapshot of $subvol to $target (pass -r to avoid confirm )" || return 4
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$usesudo "$BTRFS_BIN" sub snap "$subvol" "$target"
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else
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echo "$subvol not a btrfs subvolume, can't make named snapshot"
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echo $usage
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return 3
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fi
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}
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# alias
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alias btvl="sudo $BTRFS_BIN subvolume list"
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alias btrfs="sudo $BTRFS_BIN"
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alias btsub="sudo $BTRFS_BIN subvolume"
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@ -110,13 +172,3 @@ folder_snapshot() {
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# btrfs subvolume show "$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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}
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