42 lines
736 B
Plaintext
42 lines
736 B
Plaintext
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#!/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 1 day to a read-only '.snapshots/SUBVOLUME/DATE'.
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EOF
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}
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if [ $# -ne 0 ]; then
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usage
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exit 1
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fi
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while IFS= read -r fs; do
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for subvol in private public; do
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last=$(ls -1 .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 - $last_date)) -gt 86400 ]; then
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choice=N
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echo -n "==> Snapshot '$fs/${subvol}'? (y/N) "
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read -r choice
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case "$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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unset choice
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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 <<EOF
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$(findmnt -t btrfs -n --output TARGET)
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EOF
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