On Fri, 14 Jul 2017 18:56:19 -0400
Paul Fox <pgf AT foxharp.boston.ma DOT us> wrote:

> i confess i haven't been following this thread in all its gory detail,

The BackupPC god absolves you (although, it is the BPC v.3x god, so
you'll need to upgrade the confessionnal if you want to also be absolved
by the v.4.x one.)

> but i suspect that many folks do their backups onto a separately
> mounted disk.  if you do that, then adding "--one-file-system" to the
> rsync args takes care of it:  you can back up from '/', but only the
> root filesystem will be backed up.  any other filesystems on that
> machine will also need to be backed up as separate shares, of course.

But this way, you still backup unwanted directories, such as /tmp, /dev,
/proc, etc.
Starting on the disk root and excluding these allows for a tight control
over what you want and the rest, providing you need almost the whole
system to be saved for whatever reason.

Jean-Yves

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