2024-11-09 20:19:38 +00:00
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#!/bin/sh
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#
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# BTRFS rolling snapshots
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# CC0 ~caskd
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: ${SRC:?'Source not defined'}
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2024-11-10 10:13:15 +00:00
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: ${SNAPDIR:?'Snapdir not defined'}
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: ${SELECTOR:='+%H'}
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NAME="$(date "$SELECTOR")"
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2024-11-09 20:19:38 +00:00
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2024-11-10 10:13:15 +00:00
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SNAPSRC="$SRC"
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SNAPDEST="$SRC/$SNAPDIR/$NAME"
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2024-11-09 20:19:38 +00:00
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2024-11-10 10:13:15 +00:00
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mkdir -p "${SNAPDEST%/*}"
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btrfs subvolume delete "$SNAPDEST"
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btrfs subvolume snapshot -r "$SNAPSRC" "$SNAPDEST"
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