Amanda-Users

Re: Overlapping backups: should I expect problems?

2008-09-16 01:30:30
Subject: Re: Overlapping backups: should I expect problems?
From: Jon LaBadie <jon AT jgcomp DOT com>
To: amanda-users AT amanda DOT org
Date: Tue, 16 Sep 2008 00:23:03 -0400
On Tue, Sep 16, 2008 at 11:36:34AM +0800, John Morris wrote:
> Hi,
> 
> We're doing our on-site backups using virtual tapes.  Two hard drives 
> are dedicated to this.  In an attempt to be clever, I set up two 
> configurations, DS2 and DS3, that back up the same filesystems, but 
> whose virtual tapes are on separate disks.  The idea is that if we need 
> to restore, and one of the disks turns out to have a problem, that we'll 
> still have the other disk with a complete level 0 and incrementals.  The 
> configurations run on alternating days.  Does this make sense?
> 
> My question is, is this actually a good idea?  Will there be any 
> problems I haven't anticipated, such as the two configs conflicting?  
> For example, I notice that there is only one /etc/amandates file that is 
> presumably shared by both configurations.  I don't know whether the date 
> to begin incrementals from is from this file or from 
> /var/lib/amanda/gnutar-lists.
> 
> Thanks for any hints!

Many DLEs are entered as

        host <start_dir> ...

However you may recall that the disklist syntax also includes
a "DLE name" field:

        host name <start_dir> ...

and if name is not provided, the <start_dir> is used
as the name.

I'm pretty sure amandates uses the name, not the start_dir.

So you could supply uniqu DLE names in each config and
there should be no conflict.

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
 12027 Creekbend Drive          (703) 787-0884
 Reston, VA  20194              (703) 787-0922 (fax)

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