On Thursday 23 September 2004 09:19, Ivan Petrovich wrote:
>> If you use software compression however, amanda pipes the data
>> through gzip before writing to tape.  This has two advantages: 
>> gzip does not suffer from the "expand already compressed data"
>> syndrome, and amanda has an exact knowledge how much bytes to
>> write on the tape. The added accuracy greatly improves the
>> planning capacities of amanda. Amanda really likes to schedule
>> using accurate numbers.
>
>Paul,
>
>The problem I have with using software compression is that it adds
>several hours to the "estimate phase." Am I doing something wrong?
> Does Amanda run the gzip ones to get the output size before running
> gzip again when performing the actual dump?
>
>Thanks and regards,
>
>Ivan

I don't think so Ivan.  What she normally does is look in her history 
to see how much this disklist 'entry' compressed the last time.  Or 
at least thats how I understand it.

-- 
Cheers, Gene
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