Hello,

There is a section in the manual that provides a step by step procedure 
for testing writing to tapes.  In addition to what John wrote you, there 
are two other obvious things for you to do:

1. Ensure that tape drive hardware compression is turned on.

2. Send the Job report output when a tape becomes full to this list.  
That way we can see why Bacula terminates writing on the tape.

If you are writing data that is already compressed or encrypted in one 
form or another, then the apparent amount of data that you write to the 
tape (after compression or encryption) will be about 1/2 what 
manufacturers say the tape holds.  They always cite tape sizes assuming 
a 2:1 compression of data being written on the tape.

Best regards,
Kern

On 15-03-26 05:26 AM, Markus Rosjat wrote:
> Hi there,
>
> I know this question was asked befor and maybe it will be again in the
> future but I'm kinda frustrated with it.
> We have a LTO-3 hp tapeloader and suddenly our jobs began to randomly
> mark tapes as full even the tape was writen with half of the amount or
> sometimes less. I found some old post about it on the list but with a
> aswer like
> "solved but I dont tell because it was sooo simple" you get frustrated
> again. What we did so far without solving the problem.
>
>    1. replacing the scsi controller -> no effect
>    2. replacing the scsi cable -> no effect
>    3. replacing the terminator -> no effect
>    4. replacing the tapeloader -> no effect
>
> so even with all physical parts removed bacula insist that the tapes are
> fully writen after 150gb or even 80gb. We used brand new, never written
> tapes too and got told they are full. but checking showed we had once
> again just written less then expected.
>
> So if somebody out there with the same problem and a solution please share.
>
> Regards
>


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