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Re: [Bacula-devel] vtape


Hi,

On Wednesday 25 June 2008 14:36:50 Kern Sibbald wrote:
> Hello Eric,
>
> For those of you who don't know what vtape is -- it is a virtual tape
> driver that Eric wrote that simulates a real tape drive but using disk --
> it is no small programming accomplishment!

Thanks :)

> Nice work!  I just "converted" my test regression case so that it is
> vtape/tape neutral.  It works like a charm.  One can switch back and forth
> between vtape and real tape by simply changing:
>
> USE_VTAPE=yes
> to
> USE_VTAPE=no
>
> or vise-versa and then running:
>
> make sed
>
> I ran my test tests/two-vol-manual-tape both with a real tape drive and
> using vtape with the above procedure and diffed the output.  The only
> differences were due to dates and timing (i.e. vtape runs much faster) --
> everything else in the debug output listing was identical.
>
> I'm looking forward to finishing up version 2.4.1 using vtape (*much*
> faster)

vtape isn't present on 2.4 branch...

> so you can move all the @xxx@ variables to the environment, and 
> then there will be no need to even run the "make sed" script to switch
> between real tape and virtual tape.

We will have some problems with bacula configuration file, how do you want to 
handle that ?

We can do some sort of "make sed" during regress test initialization for 
example.

Bye

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