7a01badef5
Two concurrent tarsnap backups cannot be run at the same time with the same keys - completely separate sets of keys must be generated for each archive in this case, if you want backups to overlap. This extends the archives attrset to support a 'keyfile' option, which defaults to /root/tarsnap.key like the top-level attribute. With this change, if you generate two keys with tarsnap-keygen(1) and use each of those separately for each archive, you can backup concurrently. Signed-off-by: Austin Seipp <aseipp@pobox.com>
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