> On Mon, 2009-12-14 at 15:39 -0500, Bob Hetzel wrote:
>> 1) Bacula is indeed able to seek within a tape.  If you're having trouble 
>> with this functionality you need to look at the storage daemon options at
>> 
>> http://www.bacula.org/3.0.x-manuals/en/install/install/Storage_Daemon_Configuratio.h
>>  \
>> tml#SECTION00830000000000000000 
>> Fast Forward Space File
>> Forward Space Record
>> Maximum File Size
>> 
>> The first two should probably be left at their default values but the 
>> Maximum File Size value may need to be increased if you're using LTO-4 
>> hardware.
>> 
> ----
> that's interesting... I did not change them on the recent LTO-4 that I
> just set up but btape testing did not reveal any problems. Is btape
> testing sufficient to point out any necessary changes here?
> 
> Craig
> 

It's not that there's a problem with using the default values it's just 
that some of they aren't optimized for cutting edge hardware.  Read the 
description of the values and it's spelled out pretty well.  In addition if 
you google Maximum File Size LTO-4 bacula you'll come up with this 
explanation too

http://www.mail-archive.com/bacula-users AT lists.sourceforge DOT 
net/msg36340.html

Also, you probably should experiment with minimum and maximum block size. 
I would definitely recommend doing some repeatable tests with this kind of 
tuning parameters as the optimum values may depend heavily on your 
director's CPU and other hardware.

    Bob



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