75 lines
1.3 KiB
Bash
Executable File
75 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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usage () {
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cat <<EOF>&2
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Usage: ${0##*/}
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Snapshot all Btrfs subvolumes older than 10 minutes to a read-only '.snapshots/SUBVOLUME/DATE'.
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Options:
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-n: No preview.
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-g: Run "git gc" on all .git folders.
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EOF
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}
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OPT_PREVIEW=true
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OPT_GIT_GC=false
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while getopts ":ghn" opt; do
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case $opt in
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g)
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OPT_GIT_GC=true ;;
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h)
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usage
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exit ;;
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n)
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OPT_PREVIEW=false ;;
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\?)
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usage
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exit 1 ;;
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esac
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done
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shift $(($OPTIND - 1))
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git_gc() { # $1=rootdir
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find "$1" -type d -name ".git" -print -exec git --git-dir {} gc \;
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}
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snap () { # $1=fs $2=subvol
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local fs=$1
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local subvol=$2
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local choice=N
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local last=$(find "$fs/.snapshots/$subvol" -maxdepth 1 | tail -1)
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$OPT_GIT_GC && git_gc "$fs/subvol"
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$OPT_PREVIEW && rmirror -i "$fs/$subvol" "$last"
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echo -n "==> Snapshot '$fs/${subvol}'? (y/N) "
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read -r choice
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echo ""
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case "$choice" in
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Y|y)
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btrfs-snap "$fs/$subvol" ;;
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esac
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}
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for fs in $(findmnt -l -t btrfs -n --output TARGET | grep /media); do
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for subvol in private public; do
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last=$(ls -1 "$fs"/.snapshots/"$subvol" | tail -1 | sed 's/_/ /')
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if [ -z "$last" ]; then
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continue
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fi
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last_date=$(date --date="$last" +%s)
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now=$(date +%s)
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if [ $(($now - $last_date)) -gt 600 ]; then
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snap "$fs" "$subvol"
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fi
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unset now
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unset last_date
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unset last
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done
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done
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