On Wed, Sep 1, 2010 at 3:12 PM, Rodrigo Ferraz
<Rodrigo.Ferraz AT conceptnetservices DOT com> wrote:
> Hi John. No software compression is enabled in bacula. Files are basically 
> compressible files, such as MS Office, engineer drawings, images, text files, 
> etc. Just a fraction of them are compressed files (.ZIP and .RAR), not more 
> than 5%.
>
> Regarding your second comment I guess it could be the case and it is also 
> worth of some more analysis. When bacula reaches the end of the tape, does it 
> tell you or log the block where it has stopped? I know that a 'mt -f 
> /dev/nst0 status' would return the current block position, but I would like 
> to know if bacula does it too. Also, is there a way to check how many total 
> blocks the operating system or bacula are seeing on the tape? Regarding this 
> last question, is tapeinfo's MinBlock/MaxBlock information reliable enough to 
> conclude that this tape has a total of 16,777,215 blocks?
>

There are a variable # of blocks because of compression and other
factors. These min and max blocks are the sizes. 1 byte minimum block
you can tell the tape drive to write. 16MB maximum block you can tell
the tape drive to write. The default I believe is 64KB.

John

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