43 lines
1.2 KiB
Bash
43 lines
1.2 KiB
Bash
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#!/usr/bin/env bash
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set -eo pipefail
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if ssh takyon sudo -u bingus test -e /opt/bingus-files/files_snapshots/current; then
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echo 'Error: an operation is already ongoing' >&2
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exit 1
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fi
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mkdir -p baks
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ssh takyon sudo -u bingus btrfs subvol snapshot -r \
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/opt/bingus-files/files \
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/opt/bingus-files/files_snapshots/current
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if ssh takyon sudo -u bingus test -e /opt/bingus-files/files_snapshots/last; then
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echo "taking incremental backup" >&2
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out=baks/"$(date --rfc-3339=seconds)"
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ssh takyon sudo btrfs send \
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-p /opt/bingus-files/files_snapshots/last \
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/opt/bingus-files/files_snapshots/current \
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--compressed-data > "$out"
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du -h "$out"
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echo "removing parent" >&2
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ssh takyon sudo -u bingus btrfs property set -ts /opt/bingus-files/files_snapshots/last ro false
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ssh takyon sudo -u bingus btrfs subvol delete /opt/bingus-files/files_snapshots/last
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else
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echo "taking first copy" >&2
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ssh takyon sudo btrfs send \
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/opt/bingus-files/files_snapshots/current \
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--compressed-data > baks/epoch
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du -h baks/epoch
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fi
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echo "renaming current to last" >&2
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ssh takyon sudo -u bingus mv \
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/opt/bingus-files/files_snapshots/current \
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/opt/bingus-files/files_snapshots/last
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echo "backup complete" >&2
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