BackupPC-users

Re: [BackupPC-users] Archiving incremental backups?

2013-03-08 20:05:23
Subject: Re: [BackupPC-users] Archiving incremental backups?
From: Holger Parplies <wbppc AT parplies DOT de>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Sat, 9 Mar 2013 02:04:05 +0100
Hi,

Peter Carlsson wrote on 2013-03-08 23:21:38 +0100 [[BackupPC-users] Archiving 
incremental backups?]:
> Hello!
> 
> Is it possible to archive only the incremental part of a backup?

no, I don't think that is supported, and I also don't think it is a good
idea :-).

> I would like to make a tar archive only of the files that is part of an
> incremental backup.

What exactly are you trying to achieve? You are describing the wrong step
toward an unknown goal. We can't give you good advice without knowing what
you want to do.

In short, a tar file of a full backup + one (or more) tar files of incremental
backups *do not* equal a snapshot of your source file system at the point of
the last incremental, simply because you lose all information about files
being deleted (a tar file cannot represent files that are supposed to be
deleted on extraction, as far as I know). Of course, you might not have this
information in your BackupPC history, if you are using tar or smb transport,
but you can fix that by switching to rsync(d), and your archives will still
only be tar files.

Regards,
Holger

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