On Sun, 14 Jan 2001, David Wolfskill wrote:

> Well, as it happened, one of the file systems I back up is hovering right
> around 12 GB.  And as luck would have it, amanda would typically get about
> 30 - 35 GB on the first tape before this file system was ready to be taped.
> Then taper would try to write this backup image to tape, and eventually
> fail, only to re-start on the next tape (all as expected).  But that would
> leave a bunch of wasted space on the end of that first tape, with the
> result that the Offsite backups would actually require all 3 tapes.

I implemented some changes in the driver that cause it to gather dumps
until a certain threshold is reached. Afterwards it will always write
the biggest dump still fitting on the tape. This works quite nicely for me
and improves tape utilization a lot. Unfortunately it also increases the
total dump time a bit, if your tape is slow.
I haven't released it yet, because I implemented it in Amanda 2.4.1p1
and didn't come around to porting it to 2.4.2.
But if you like I can post the patches for 2.4.1p1.

Greetings,

Martin
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Martin Apel, Dipl.-Inform.                            t e c m a t h  A G
Group Manager Software Development              Human Solutions Division
phone +49 (0)6301 606-300            Sauerwiesen 2, 67661 Kaiserslautern
fax   +49 (0)6301 606-309                                        Germany
[EMAIL PROTECTED]                               http://www.tecmath.com
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