54 lines
1.4 KiB
Plaintext
54 lines
1.4 KiB
Plaintext
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#!/usr/bin/env python3
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"""backup-check: Periodically compare checksums of backups in multiple
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locations. It's mainly to do a weekly check of all my backup locations and
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identify bit rot before it's too late.
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Install via `crontab -e`:
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0 2 * * 0 /home/noah/bin/backup-check
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--Kirsle
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http://sh.kirsle.net/
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"""
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import codecs
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import os.path
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import subprocess
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# Directories to compare with each other.
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DIRECTORIES = [
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"/mnt/Midnight/Images/Organized",
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"/run/media/noah/Cyro/Pictures/Organized",
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"/run/media/noah/Obelisk/Redundant/Images/Organized",
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"/home/noah/Dropbox/Photos/Organized",
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"/home/noah/ownCloud/Photos/Organized",
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]
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ERROR_OUT = "/home/noah/Desktop/Checksum Error.txt"
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def main():
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# First available disk becomes the common denominator.
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master = None
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for disk in DIRECTORIES:
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if os.path.isdir(disk):
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if master is None:
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print("Master disk chosen as:", disk)
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master = disk
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if disk != master:
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# Do the comparison.
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print("Compare {} <=> {}".format(master, disk))
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out = subprocess.check_output(["diff", "-aqr", master, disk])
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if len(out):
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# Problem!
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error(out)
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break
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def error(out):
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"""Error, panic!"""
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fh = codecs.open(ERROR_OUT, "w", "utf-8")
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fh.write(out.decode("utf-8"))
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fh.close()
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if __name__ == "__main__":
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main()
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