Amanda-Users

Re: AMANDA demanda new tape...

2009-07-23 17:26:22
Subject: Re: AMANDA demanda new tape...
From: Chris Hoogendyk <hoogendyk AT bio.umass DOT edu>
To: Sam Hooker <sth AT noiseplant DOT com>
Date: Thu, 23 Jul 2009 16:10:30 -0400
Two issues I see. One is that you only have one cycle of dumps with full backups at a time. The other is only partial, is getting reused, and will contain incrementals referring back to fulls that have been reused already. So you don't really have what I would consider proper redundancy. The other is that the number of vtapes is exactly equal to the tapecycle. I would typically have it be more.

Try

dumpcycle 14
runspercycle 14
runtapes 1
tapecycle 42

and then give it, say, 44 labeled vtapes.

That way, you would always have two cycles of backups with full backups, while the third and oldest cycle is getting reused. By having a couple extra vtapes, you also guarantee that you will have some available for reuse. Of course, this all depends on your other design parameters -- how much disk space you have available for vtapes, etc.


---------------

Chris Hoogendyk

-
  O__  ---- Systems Administrator
 c/ /'_ --- Biology & Geology Departments
(*) \(*) -- 140 Morrill Science Center
~~~~~~~~~~ - University of Massachusetts, Amherst
<hoogendyk AT bio.umass DOT edu>

---------------
Erdös 4




Brian Cuttler wrote:
right - sorry.

You force a full only every 28 days, that might be
level 0, 0, 1,1,1,2,2,2,2,3,3,3,33,3,4,4,4,44,5,5,5,5,55,5,6,6,6,67,7,7,7,7
difficult restore process, more common to have a dumpcycle of 1 or 2
weeks, used (probably) more tape each day but simplifies the restores.

No, I don't see an obvious reason why you aren't finding a tape
to write on.

All 40 tapes are actually in the jukebox ?

The changer-config file is correct, amanda knows there are
40 tapes/40 slots ?

How to you correct the problem now ?

On Thu, Jul 23, 2009 at 03:01:24PM -0400, Sam Hooker wrote:
- ----- "Brian Cuttler" <brian AT wadsworth DOT org> wrote:
what are the values for

dumpcycle
runspercycle
runtapes
tapecycle


On Thu, Jul 23, 2009 at 02:45:46PM -0400, Sam Hooker wrote:
...
[root@inara NOISEPLANT]# for opt in dumpcycle runspercycle tapecycle
runtapes tpchanger tapedev; do echo -n "$opt: "; amgetconf NOISEPLANT
$opt; done
dumpcycle: 28
runspercycle: 28
tapecycle: 40
runtapes: 1
tpchanger: chg-disk
tapedev: file:/storage0/amandatapes/NOISEPLANT/slots
:-)


Cheers,

- -sth

sam hooker|sth AT noiseplant DOT com|http://www.noiseplant.com


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