On Mon, Dec 5, 2011 at 11:36 AM, Pablo Marques <pmarq...@miamilinux.net>wrote:
>
> >> Thanks you Jesse for the feedback.
> >>
> >> Regarding the disaster recovery, I have a suggestion for the bacula
> >> team:
> >>
> >> Why not make the director write the bacula config files and any
> >> relevant bsr files at the beginning of each tape? The space wasted on
> >> the tape to save these file would be very small.
>
> >Well, the first problem here is that the Director would have to know how
> >much space it was going to need for BSR files. Of course, it could
> >pre-allocate a fixed-size block of, say, 1MB for BSR files.
>
> Agree, 1 MB is basically nothing on a tape and it can accommodate easily a
> huge amount of bsr files.
> My /etc/bacula is 88k uncompressed.
>
> >The second problem, it seems to me, is that this would break
> >compatibility with all older Bacula volumes and installations.
>
> not necessarily if you make this information at the beginning of the tape
> look like a "volume file".
> It will be ignored by old directors because it will look the same as a
> failed job that took space on the tape.
>
>
> Pablo
>
Or you could just decide that backward compatibility of that type is just
not that important. For instance: versions x.0.0 and later use this
format. Tapes written in this format are not accessible to older
versions. It's OK to do that. It's also OK to have the option of writing
in the older format from the newer directors. This will give you time to
bring all your directors up to date before switching to the new format.
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