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151 lines
4.5 KiB
151 lines
4.5 KiB
#!/bin/bash
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# command info
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if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "-help" ]; then
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echo "small rescue script to to backup or restore"
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echo "lnd.rescue.sh [backup|restore]"
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exit 1
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fi
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localip=$(ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1 -d'/')
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mode="$1"
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if [ ${mode} = "backup" ]; then
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################################
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# BACKUP
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################################
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echo "*** LND.RESCUE --> BACKUP"
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# stop LND
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echo "Stopping lnd..."
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sudo systemctl stop lnd
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sleep 5
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echo "OK"
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echo
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# zip it
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sudo tar -zcvf /home/admin/lnd-rescue.tar.gz /mnt/hdd/lnd
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sudo chown admin:admin /home/admin/lnd-rescue.tar.gz
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# name with md5 checksum
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md5checksum=$(md5sum /home/admin/lnd-rescue.tar.gz | head -n1 | cut -d " " -f1)
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mv /home/admin/lnd-rescue.tar.gz /home/admin/lnd-rescue-${md5checksum}.tar.gz
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# offer SCP for download
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echo
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echo "****************************"
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echo "* DOWNLOAD THE BACKUP FILE *"
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echo "****************************"
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echo
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echo "RUN THE FOLLOWING COMMAND ON YOUR LAPTOP IN NEW TERMINAL:"
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echo "scp -r admin@${localip}:/home/admin/lnd-rescue-*.tar.gz ./"
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echo ""
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echo "Use password A to authenticate file transfere."
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echo
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echo "BEWARE: Your Lightning node is now stopped. So its safe to backup the data and restore it"
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echo "later on - for example on a fresh RaspiBlitz. But once this Lightning node gets started"
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echo "again by 'sudo systemctl start lnd' or a reboot its not adviced to restore the backup file"
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echo "anymore bacause it cointains outdated channel data and can lead to loss of channel funds."
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elif [ ${mode} = "restore" ]; then
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################################
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# RESTORE
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################################
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echo "*** LND.RESCUE --> RESTORE"
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echo ""
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filename=""
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while [ ${#filename} -eq 0 ]
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do
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countZips=$(sudo ls /home/admin/lnd-rescue-*.tar.gz 2>/dev/null | grep -c 'lnd-rescue')
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if [ ${countZips} -lt 1 ]; then
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echo "**************************"
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echo "* UPLOAD THE BACKUP FILE *"
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echo "**************************"
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echo
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echo "If you have a lnd-rescue backup file on your laptop you can now"
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echo "upload it and restore the your old LND state."
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echo
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echo "To make upload open a new terminal on your laptop,"
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echo "change into the directory where your lnd-rescue file is and"
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echo "COPY, PASTE AND EXECUTE THE FOLLOWING COMMAND:"
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echo "scp -r ./lnd-rescue-*.tar.gz admin@${localip}:/home/admin/"
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echo ""
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echo "Use password A to authenticate file transfere."
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echo
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echo "PRESS ENTER when upload is done. Use CTRL-C to abort."
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fi
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if [ ${countZips} -gt 1 ]; then
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echo "!! WARNING !!"
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echo "There are multiple lnd-rescue files in directory /home/admin."
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echo "Make sure there is only one file to work with and start again."
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echo
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exit 1
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fi
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if [ ${countZips} -eq 1 ]; then
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clear
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echo
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echo "**************************"
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echo "* RESTORING BACKUP FILE *"
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echo "**************************"
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echo
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filename=$(sudo ls /home/admin/lnd-rescue-*.tar.gz)
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echo "OK -> found file to restore: ${filename}"
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md5checksum=$(md5sum ${filename} | head -n1 | cut -d " " -f1)
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isCorrect=$(echo ${filename} | grep -c ${md5checksum})
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if [ ${isCorrect} -eq 1 ]; then
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echo "OK -> checksum looks good: ${md5checksum}"
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else
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echo "!!! FAIL -> Checksum not correct."
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echo "Maybe transfere failed? Continue on your own risk!"
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echo "Recommend to abort and upload again!"
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fi
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echo
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echo "WARNING: This will delete the actual LND state/funds of this RaspiBlitz."
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echo
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echo "PRESS ENTER to start restore. Use CTRL-C to abort."
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fi
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read key
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done
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# stop LND
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echo "Stopping lnd..."
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sudo systemctl stop lnd
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sleep 5
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echo "OK"
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echo
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# clean DIR
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echo "Cleaning LND data ..."
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sudo rm -r /mnt/hdd/lnd/*
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echo "OK"
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echo
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# unpack zip
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echo "Restoring LND data from ${filename} ..."
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sudo tar -xf ${filename} -C /
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sudo chown -R bitcoin:bitcoin /mnt/hdd/lnd
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echo "OK"
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echo
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# start LND
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echo "Starting lnd..."
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sudo systemctl start lnd
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echo "OK"
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echo
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echo "DONE - please check if LND starts up correctly with restored state and funds."
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echo "Keep in mind that some channels got forced closed by channel partners in the meanwhile."
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echo
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else
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echo "unknown parameter '${mode}' - exit"
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fi
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