BackupPC-users

Re: [BackupPC-users] Duplicate files in pool with same CHECKSUM and same CONTENTS

2008-10-30 10:09:48
Subject: Re: [BackupPC-users] Duplicate files in pool with same CHECKSUM and same CONTENTS
From: Tino Schwarze <backuppc.lists AT tisc DOT de>
To: backuppc-users AT lists.sourceforge DOT net
Date: Thu, 30 Oct 2008 15:08:29 +0100
On Thu, Oct 30, 2008 at 09:56:15AM -0400, Jeffrey J. Kosowsky wrote:

>  > I'm not sure though, how the file name is derived, I found another file
>  > with same name but different MD5 sum:
>  > .../cpool/0/0 # md5sum 8/0084734e7242df0fbc186ba6741d1bab*
>  > db224998946bac7859f2448f41c58f88  8/0084734e7242df0fbc186ba6741d1bab
>  > d1d8f3a86ae5492de0bf11f5cfb45860  8/0084734e7242df0fbc186ba6741d1bab_0
>  > 
>  > IIRC, BackupPC_nightly should perform chain cleaning.
> 
> Well, I haven't noticed any change after it runs...
> I think I'm even more confused now ;)
> How can I troubleshoot this further?

There's no trouble to shoot! ;-)

Holger explained that the pool file name is based on a checksum of the
first 256k of the file's content and the file's length, so collisions
are normal and expected.

HTH,

Tino.

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

www.lichtkreis-chemnitz.de
www.craniosacralzentrum.de

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