BackupPC-users

[BackupPC-users] Pooling doesn't work

2009-10-08 10:49:34
Subject: [BackupPC-users] Pooling doesn't work
From: Patric Hafner <patric AT hafnernetz DOT de>
To: backuppc-users AT lists.sourceforge DOT net
Date: Thu, 08 Oct 2009 16:29:54 +0200
Hello everybody,

i'm running BackupPC 3.1.0 with Debian Lenny. BackupPC is responsible
for about 5 Clients which are backupped over rsync/ssh.

My problem is, that during an incremental backup nearly every file is
marked as "create", so nearly every file will be downloaded again.
About 20% are marked as "pool".
But those files marked as "create" haven't changed since the last run,
timestamps are still the same. For example the whole /etc directory will
be downloaded every day. And I can surely say that nothing changed there.

This results an an extensive amount of traffic, which is unacceptable.
For example: My old, handwritten rsync-based solution found around 50MB
of changed files, but BackupPC 3000MB.

An example
File Size/Count Reuse Summary
        Totals  Existing Files  New Files
Backup#         Type    #Files  Size/MB         MB/sec  #Files  Size/MB         
#Files  Size/MB

35      incr    996     3560.5  1.69    710     178.9   402     3381.7

Does anyone has an idea? This would be great.

Big thanks for your help.

Best regards,

Patric

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