Hi,

On Wed, Jan 27, 2010 at 10:33:48AM -0000, PD Support wrote:
 
> > From: Keith Edmunds [mailto:kae AT midnighthax DOT com] 
> > Sent: 26 January 2010 14:00
> > To: backuppc-users AT lists.sourceforge DOT net
> > Subject: Re: [BackupPC-users] Thinking aloud about backup rotation
> > 
> > > If I have a source/dest folder with a week's worth of backups in it
> > > labelled Mon_backup.bak, Tue_backup.bak...
> > .
> > > It would be great if BackupPC had some way of 'knowing' that a folder
> > > contained files of a cyclic nature like this
> > 
> > If you use BackupPC for backups, it knows what to backup each time. It is
> > unreasonable to expect BackupPC to guess that you are also (for some
> > unstated reason) carrying out backups via a different mechanism which
> > BackupPC should somehow be aware of.
> > 
> > Why don't you trust BackupPC to backup your data, period? If the
> > Mon_backup.bak files are simply local copies, just exclude them from
> > BackupPC altogether, and have BackupPC backup the source instead.
> > 
> > Keith
> 
> The source is one file; the dump from an SQL database so it cannot be
> directly backed up. In this case, backing up today's dump by comparing it
> with yesterdays (with a different name) would be an extremely useful and
> time/bandwidth saving function - maybe even a 'selling point' for BackupPC!?

> Think about it - as things stand at the moment, backing up
> 'Wed_filename.bak' by comparing it with the currently-backed up version is
> looking at a file on the BackupPC server that has one week of changes in it
> rather than just one day's.
 
There is an easier solution: Just don't name the files by weekday -
backup into the same file every day like "xyz_db.bak". Then you are free
to
a) copy it somewhere else on the server with a weekday name (and it
doesn't need to be backed up there)
b) just rely on BackupPC for restores

Why would you want to keep one week's worth of backups on the server
itself if BackupPC keeps those backups anyway?

HTH,

Tino.

-- 
"What we nourish flourishes." - "Was wir nähren erblüht."

www.lichtkreis-chemnitz.de
www.tisc.de

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