[rdiff-backup-users] -b option?

[Thanos Diacakis]

Hi there,

I would like to do a backup of a backup.  (My laptop backs up to my  
desktop, and then my desktop backs up the laptop backup plus its own  
content to an offsite server.)

The first part (laptop -> desktop) works fine with rdiff-backup.  The  
second part (desktop -> offsite) is not quite there yet:

I figured if I exclude the rdiff-backup-data folder, then rdiff-backup  
will not even know the data it happens to be backing up is a backup  
itself and the whole thing would work like a charm.  However I was  
getting a bunch of errors - seemingly it was not ignoring the rdiff- 
backup-data folder.

I saw in the man page the -b option, and that seems to be in the right  
direction, but the man page does not elaborate, and I could not find  
anything anywhere else.  It seems that it may be doing what I think it  
is doing, but I am not quite sure.

Does anyone have any thoughts on how to do this and/or any more  
details on -b ?

Thanks

Thanos