Amanda-Users

Re: tapecycle <= runspercycle

2004-06-23 10:28:40
Subject: Re: tapecycle <= runspercycle
From: Paul Bijnens <paul.bijnens AT xplanation DOT com>
To: Jukka Salmi <jukka-amanda AT 2004.salmi DOT ch>
Date: Wed, 23 Jun 2004 16:09:46 +0200
Jukka Salmi wrote:

OK, I'll try that... But hmm, why does one get warned if
tapecycle <= runspercycle? How could that be a problem?

Because in a sane backup scheme you avoid to overwrite the last
good backup.
Actually, that is what's happening in your case when you don't
change the tape, and instruct amanda to use that tape anyway,
by specifying tapecycle 1.
If anything happens while creating the new backup, you don't have
a good current backup, AND you don't have the previous anymore
either.  With 20 tapes, hopefully you do have still some older
backups, but the last good one (usually the most important)
just got trashed.
Amanda warns you about this.
(The above is also true for numbers > 1 ).


(why didn't I see that this morning?)

You probably tried out the advice you gave me ;-)

I had a coffee or two, actually.

--
Paul Bijnens, Xplanation                            Tel  +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM    Fax  +32 16 397.512
http://www.xplanation.com/          email:  Paul.Bijnens AT xplanation DOT com
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