Bacula-users

Re: [Bacula-users] Full backups can be missed

2008-07-29 13:20:21
Subject: Re: [Bacula-users] Full backups can be missed
From: Jesper Krogh <jesper AT krogh DOT cc>
To: Alan Brown <ajb2 AT mssl.ucl.ac DOT uk>
Date: Tue, 29 Jul 2008 19:20:04 +0200
Alan Brown wrote:
> On Mon, 28 Jul 2008, Frank Sweetser wrote:
> 
>> It's possible to almost get into that situation, but Bacula will detect and
>> prevent it.  Whenever an incremental or differential job runs, it checks the
>> catalogue for a matching full backup.  If it doesn't find a matching full
>> backup, the current job is upgraded to a full backup.
> 
> This behaviour is flawed for large backups. If repeat failed levels is
> enabled, then if an incremental is scheduled and the full is still running
> the increental will turn into a full - same with the next incremental.
> 
> This easily gets into a cycle of endless full backups.

I have hit the same problem in my environment. Allthough not a perfect 
solution I set the concurrency of the client fd to 1 and set the Max 
Wait Time to 23 hours for the jobs. This makes sure I dont hit any 
endless loops of full backups.

-- 
Jesper

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