Crypted backup Looking for suggestions

Sdävtaker sdavtaker at
Thu Apr 16 11:21:28 PDT 2009

It will work from DFBSD to DFBSD, but i cant sync the FBSD backup
without and intermediary DFBSD as proxy at least until fuse-hammer is
working (i was checking the hammer-maillist).
I will try to emulate the intermediary PC as a bochs machine in
FreeBSD and RSYNC from FBSD to emulated-DFBSD, then i do the whole
process you described from there.
I will come up with some comments after test it hope bochs doesnt kill
the machine.

>    Another option with HAMMER is to use the 'hammer mirror-read'
>    directive to generate a mirroring stream which you then pipe
>    through a crypto and store on the target machine.

>    It would take some scripting and messing around, but I think it
>    would work.  If you can extract the as-of transaction id you
>    can generate a mirroring base file (starting at transaction id 0),
>    then once you know it made it to the target machine you can record
>    the transaction id and use that as a base for the next day's mirroring
>    stream.  And so on and so forth, giving you a set of encrypted
>    incremental backup files on the target machine.

>    It would look like an incremental backup / dump.. the files would
>    not be individually accessible .. the entire mirror set would have
>    to be restored to see the contents.   Restoring a mirror set can
>    be done by creating a HAMMER slave PFS and then decrypting the
>    files (in the correct order) and piping them through a
>    'hammer mirror-write'.
>                                        -Matt
>                                        Matthew Dillon
>                                        <dillon at>

Sdävtaker prays to Rikku goddess for a good treasure.

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