Amanda-Users

Re: tape filling algorithm? (flush, or dump)

2002-11-20 16:58:35
Subject: Re: tape filling algorithm? (flush, or dump)
From: Galen Johnson <gjohnson AT trantor DOT org>
To: Deb Baddorf <baddorf AT fnal DOT gov>
Date: Wed, 20 Nov 2002 16:28:45 -0500
Deb Baddorf wrote:

What kind of optimiaztion does amanda use while flushing
dumps to tape?

While doing the dump initially,  she seems to
optimize to get the small jobs done first, and thus they
go onto tape in a similar order.   But I'm currently without
a stacker.  So only the first part of the dumps make it
to tape "live"  (so to speak)  and the rest get flushed as I
manually mount tapes.   I'm hoping that some kind of
knapsack-packing algorithm is used ..... to fit the largest
files on the tape first,   but then to add smaller ones to
fill the top of the "sack".
    My archival "do all the level 0's" is taking up 5 tapes,
hence the optimization question!

Deb Baddorf
-------------------
Deb Baddorf         baddorf AT fnal DOT gov              840-2289
"You can't help getting older, but you don't have to get old."
- George Burns                                          <IXOYE><



look in the amanda.conf file...there are several algorithms for you to use...it's fairly well documented there

=G=



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