Amanda-Users

Re: What is the highest incremental/differential level performed by amanda?

2006-07-25 14:15:52
Subject: Re: What is the highest incremental/differential level performed by amanda?
From: Ross Vandegrift <ross AT kallisti DOT us>
To: Joshua Baker-LePain <jlb17 AT duke DOT edu>
Date: Tue, 25 Jul 2006 14:06:35 -0400
On Tue, Jul 25, 2006 at 11:42:12AM -0400, Joshua Baker-LePain wrote:
> Look at the various bump* options in amanda.conf -- they control when 
> amanda bumps an incremental up a level.  Theoretically it can go to 9 
> (just like the backup tools), but there's an increasingly high requirement 
> for backup image size savings to do the bumps.

Is there such a limit in Amanda anywhere?

For example, dump from Linux's e2fstools support arbitrary integers as
dump levels.  From the manpage:

"A level number above 0, incremental backup, tells dump to copy all files
new  or  modified  since  the last dump of a lower level. The default level
is  9.  Historically only  levels  0 to 9 were usable in dump, this
version is able to understand any integer  as  a  dump level."

My Amandas don't ever get above a 6, and my predecessor's bump
settings limited runs to level 3, so I'm not saying level 897125
backups are a good idea ::-)

-- 
Ross Vandegrift
ross AT kallisti DOT us

"The good Christian should beware of mathematicians, and all those who
make empty prophecies. The danger already exists that the mathematicians
have made a covenant with the devil to darken the spirit and to confine
man in the bonds of Hell."
        --St. Augustine, De Genesi ad Litteram, Book II, xviii, 37