Bacula-users

Re: [Bacula-users] Which full back up is an incremental/differential back up based on if multiple full back ups exist within multiple pools with different retention periods?

2013-03-20 13:36:41
Subject: Re: [Bacula-users] Which full back up is an incremental/differential back up based on if multiple full back ups exist within multiple pools with different retention periods?
From: "Novosielski, Ryan" <novosirj AT umdnj DOT edu>
To: Phil Stracchino <alaric AT metrocast DOT net>
Date: Wed, 20 Mar 2013 13:33:44 -0400
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On 03/20/2013 11:34 AM, Phil Stracchino wrote:
> On 03/18/13 11:17, Melvin Ross wrote:
>> As the title says, I want to know if within a JobID, does bacula
>> possess any logic verification when selecting which full back up
>> to base incremental/differential back ups on or  does it simply
>> uses the latest one.   The reason for this question is due to the
>> nature of my schedule/volume configuration which can be seen
>> below.  As a courtesy, I'll summarize it as well.
> 
> tl;dr version: A Differential backup is always based off the most
> recent completed successful Full backup of that Job at the time the
> Differential was started (or possibly at the time it was scheduled,
> I'm not 100% certain of that detail).  An Incremental backup is
> always based off the most recent completed successful backup of
> that Job at *any* level.

A related question for anyone reading -- if I delete, say, the last
two daily incremental backups and run a new one... would that
incremental now pick up all of the files that were in those two plus
whatever's changed since?

- -- 
- ---- _  _ _  _ ___  _  _  _
|Y#| |  | |\/| |  \ |\ |  | |Ryan Novosielski - Sr. Systems Programmer
|$&| |__| |  | |__/ | \| _| |novosirj AT umdnj DOT edu - 973/972.0922 (2-0922)
\__/ Univ. of Med. and Dent.|IST/EI-Academic Svcs. - ADMC 450, Newark
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