213 lines
6.6 KiB
Bash
213 lines
6.6 KiB
Bash
#!/bin/bash
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# dry run by default
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# >btrbk_run <conf name> <btrbk run options>
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# with -e exectue
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# >btrbk_run -e <conf name> <btrbk run options>
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# to only create the links
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# >btrbk_run -e <conf name> -n
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# sudo -E bash -c 'source $BASH_SHELL_BASE/module.base; module_load btrbk; btrbk_run toot'
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btrbk_scripts_dir="$(dirname $(realpath "${BASH_SOURCE:-$0}"))"
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module_load helpers
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# will try to find a conf file with out without .conf extension in a few places
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btrbk_conf () {
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local file=${1:-btrbk.conf}
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[[ -f $file ]] && echo $file && return
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[[ -f $file.conf ]] && echo $file.conf && return
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BTRBK_CONF_DIR=${BTRBK_CONF_DIR:-/snapshots/conf}
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# echo $btrbk_scripts_dir
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# echo $BTRBK_CONF_DIR
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[[ -f $BTRBK_CONF_DIR/$file ]] && echo $BTRBK_CONF_DIR/$file && return
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[[ -f $BTRBK_CONF_DIR/$file.conf ]] && echo $BTRBK_CONF_DIR/$file.conf && return
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[[ -f /etc/btrbk/$file ]] && echo /etc/btrbk/$file && return
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[[ -f /etc/btrbk/$file.conf ]] && echo /etc/btrbk/$file.conf && return
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[[ -f /etc/btrbk.conf ]] && echo /etc/btrbk.conf && return
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return 1
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}
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btrbk_clean () {
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local file=$(btrbk_conf $1)
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[[ ! $file ]] && return 1
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sudo btrbk -c $file clean $2
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}
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btrbk_src () {
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local file=$(btrbk_conf $1)
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[[ ! $file ]] && return 1
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sudo btrbk -c $file list config --format col:h:source_subvolume
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}
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btrbk_dests () {
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local file=$(btrbk_conf $1)
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[[ ! $file ]] && return 1
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local dests=$(sudo btrbk -c $file list config --format col:h:snapshot_path | tail -1)
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dests+=" $(sudo btrbk -c $file list target --format col:h:target_path)"
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echo $dests
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}
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btrbk_latest_links () {
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local dry_run="echo"
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[[ $1 == "-e" ]] && dry_run="" && shift
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local file=$(btrbk_conf $1)
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[[ ! $file ]] && echo unable to find conf file for ${1:-btrbk.conf} && return 1
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shift
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local latest=$(sudo btrbk -c $file list latest --format col:h:snapshot_subvolume | xargs -I % sh -c 'basename %' | sed '$!N; /^\(.*\)\n\1$/!P; D')
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[[ ( ! $latest ) || $latest == "-" ]] && echo "no latest snapshots so can't make .latest links" && return 3
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local dests=$(btrbk_dests $file)
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if [[ $dry_run ]]; then
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echo dry run for making latest links for following destinations, NOTE: use -e to actually make them
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echo $dests
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echo "-------------------"
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fi
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echo making .latest symlinks in each destination
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for dest in $dests; do
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for snap in $latest; do
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# [[ -e $dest/${snap%%.*}.latest ]] && $dry_run_echo sudo rm $dest/${snap%%.*}.latest
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local cmd="sudo ln -srfn $dest/$snap $dest/${snap%%.*}.latest"
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echo $cmd
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[[ ! $dry_run ]] && $cmd
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done
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done
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}
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btrbk_run () {
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local dry_run="-n"
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[[ $1 == "-e" ]] && dry_run="" && shift
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local file=$(btrbk_conf $1)
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[[ ! $file ]] && echo unable to find conf file for ${1:-btrbk.conf} && return 1
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shift
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local src=$(btrbk_src $file)
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local snaps=$(sudo btrbk -c $file list source --format col:h:snapshot_name)
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local dests=$(sudo btrbk -c $file list config --format col:h:snapshot_path | tail -1)
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local dests+=" $(btrbk -c $file list target --format col:h:target_path)"
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# todo distinguish local from remote destinations and deal with differently for latest link
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# any pre snap tasks
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# for dest in $dests; do
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# if [[ ! -d $dest ]]; then
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# if confirm directory $dest does not exist, create; then
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# sudo mkdir -p $dest
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# else
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# echo destination $dest directory MUST exist aborting brtbk run
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# return 2
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# fi
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# fi
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# done
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echo using configuration file: $file
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echo creating snapshots: $snaps
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echo from $src
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echo at these destinations $dests
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echo additional passed arguments: $@
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# do snaps and backups
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[[ $dry_run ]] && echo backup dry run || echo Taking snapshost and making backups now...
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sudo btrbk -c $file run $dry_run --progress $@
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# post snap/backup
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btrbk_latest_links $([[ $dry_run ]] || printf "%s" -e) $file
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}
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(return 0 2>/dev/null) || btrbk_run $@
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btrbk_named () {
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# btrfs subvolume list -o . -r --sort path,gen
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# todo
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# rw vs ro -r
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# -f folder with extensions removed vs appended extension
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# figure out latest instead of depending on .latest
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# find unique names, then list and grep on those and use
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# btrfs subvolume list -o . -r --sort path+gen
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module_load confirm
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local name; local names
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local snapname=".latest"
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[[ $1 == "-s" ]] && snapname="$2" && shift 2
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local src=$(realpath $1)
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local dest=$(realpath $2)
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if [[ ! -d $dest ]]; then
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if confirm "destination directory $dest does not exist, create it"; then
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sudo mkdir -p $dest
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else
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return 1
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fi
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fi
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echo looking for snapshots in $src with extension matching $snapname
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local snaps=$(ls $src | grep "\..*$snapname" | sed 's/.\{1\}$//' | xargs -I % realpath $src/%)
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# while read test; do
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# echo $test
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# done <<< "$( btrfs subvolume list -o . -r --sort path+gen | get just path | get only fname)"
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[[ ! $snaps ]] && echo no snapshots with extension $snapname in $src && ls -la $src && return 1
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echo creating snapshots for
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for snap in $snaps; do
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name=$(get_only_fname $snap)
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[[ $names == *"$name"* ]] && echo whoops! snapshots found for $(rm_ext $snap) using filter $snapname not unique, aborting && ls -la | grep $ && return 3
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names+=" $name"
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echo $snap
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done
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if confirm in $dest; then
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local destsnap
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for snap in $snaps; do
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destsnap="$dest/$(basename $snap | cut -f 1 -d '.' )"
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if [[ -d $destsnap ]]; then
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if confirm -s snapshot $destsnap already exists do you want to over write it; then
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sudo btrfs subvolume delete $destsnap
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else
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return 2
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fi
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fi
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sudo btrfs subvolume snapshot $@ $snap $destsnap
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done
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echo $dest
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ls -la $dest
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fi
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}
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# use snapshot to then snap latest to another location, have it edit the fstab file
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# #!/bin/bash
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# [[ $# -lt 2 ]] && echo "need to supply a <root instance dir> and a snapshot name" && exit
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# # echo sed 's/$name/'$name'/g' named.conf.tmpl > $subvoldir-$name.conf
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# # echo sed -i 's/$subvoldir/'$subvoldir'/g' $subvoldir-$name.conf
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# named="$2"
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# src=/mnt/linuxpart
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# dest=/mnt/linuxpart
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# echo sudo mkdir -p $dest/$named
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# echo sudo btrfs subvolume snapshot $src/$1/@root $dest/$named/@root
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# echo sudo btrfs subvolume snapshot $src/$1/@opt $dest/$named/@opt
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# echo sudo btrfs subvolume snapshot $src/$1/@home $dest/$named/@home
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# echo sudo btrfs subvolume snapshot $src/@shell $dest/$named/@shell
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# sudo mkdir -p $dest/$named
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# sudo btrfs subvolume snapshot $src/$1/@root $dest/$named/@root
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# sudo btrfs subvolume snapshot $src/$1/@opt $dest/$named/@opt
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# sudo btrfs subvolume snapshot $src/$1/@home $dest/$named/@home
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# sudo btrfs subvolume snapshot $src/@shell $dest/$named/@shell
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# echo to edit: bfs_vscode $dest/$named |