Bacula-users

Re: [Bacula-users] minimum volume retention period

2009-04-03 03:39:32
Subject: Re: [Bacula-users] minimum volume retention period
From: Julien Cigar <jcigar AT ulb.ac DOT be>
To: morty AT frakir DOT org
Date: Fri, 03 Apr 2009 09:37:20 +0200
On Thu, 2009-04-02 at 20:52 -0400, morty AT frakir DOT org wrote:
> On Thu, Apr 02, 2009 at 09:25:55PM +0200, Julien Cigar wrote:
> 
> > > 1 may 0:00 am : Full backup -> volume "Full-0001"
> > > 1 may 8:00 pm : Incremental backup -> volume "Incr-0001"
> > > 2 may 8:00 pm : Incremental backup -> volume "Incr-0002"
> > > 3 may 8:00 pm : Incremental backup -> volume "Incr-0003"
> > > ...
> > > 31 may 8:00 pm : Incremental backup -> volume "Incr-0031"
> > > 
> > > 1 june 0:00 am : Full backup -> volume "Full-0002"
> > > 1 june 8:00 pm : Incremental backup -> volume "Incr-0032"
> > > 2 june 8:00 pm : Incremental backup -> volume "Incr-0033"
> > > 3 june 8:00 pm : Incremental backup -> volume "Incr-0034"
> > > ...
> > > (around 15 june Incr-0001 should be recycled)
> > > 
> > > 1 july 0:00 am : Full backup -> volume "Full-0001" (recycled)
> 
> An incremental can be promoted to a full in the middle of a cycle.
> This can happen because of a fileset change or a rerun of a failed
> level.  If such an event happens on June 15, the volume Full-0001 will
> be overwritten.  At this point, you can't do a restore of the FS from
> May 31, even though it's only been 15 days.
> 

right.

thanks !

> - Morty
-- 
Julien Cigar
Belgian Biodiversity Platform
http://www.biodiversity.be
Université Libre de Bruxelles (ULB)
Campus de la Plaine CP 257
Bâtiment NO, Bureau 4 N4 115C (Niveau 4)
Boulevard du Triomphe, entrée ULB 2
B-1050 Bruxelles
Mail: jcigar AT ulb.ac DOT be
@biobel: http://biobel.biodiversity.be/person/show/471
Tel : 02 650 57 52


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