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[Unit]
Description=Overlay sync to NV storage
[Service]
# Run rsync periodically to sync the overlay to NV storage
ExecStart=bash -c 'while true; do rsync -a --delete /tmp/.overlay/ /tmp/.rwfs/.overlay; sync /tmp/.rwfs/.overlay; sleep 10; done'
# On shutdown, archive the bash history so we don't lose it and run one last sync
ExecStop=bash -c 'history -a; rsync -a --delete /tmp/.overlay/ /tmp/.rwfs/.overlay; sync /tmp/.rwfs/.overlay; sleep 5'
[Install]
WantedBy=multi-user.target
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