--On Tuesday, September 20, 2022 12:30 AM +1000 Adam Goryachev via
BackupPC-users <backuppc-users@lists.sourceforge.net> wrote:
It depends on the version of backuppc either v3 or v4 as to the exact
sequence of events, but in either case, the files are processed one at a
time as they are received, so if there is an existing file from another
host in the pool, then that file will only require additional space
during the transfer of the file (I think BPC v4 with rsync will avoid
transferring the file as well).
Thanks, that's perfect. I'm backing up the backup server to itself via
rsyncd, and it has an image of another server that's already in the backup.
It looks like the pool grew only very slightly as a result.
(The idea is that this server will become the new server when the old one
is retired. So I rsync the old one to it periodically and can quickly move
all the files to their final locations when we switch. Switching hardware
is when I upgrade the OS, so the new Rocky 8 server will replace the old
CentOS 7 server. (I'm debating upgrading this one to Rocky 9 but that might
wait for the next hardware.))
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