BackupPC-users

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

2008-10-30 10:20:32
Subject: Re: [BackupPC-users] Duplicate files in pool with same CHECKSUM and same CONTENTS
From: "Jeffrey J. Kosowsky" <backuppc AT kosowsky DOT org>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Thu, 30 Oct 2008 10:18:18 -0400
Tino Schwarze wrote at about 15:08:29 +0100 on Thursday, October 30, 2008:
 > 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.
 > 
Except that it my case some of the duplicated checksums truly are the
same file (probably due to the link issue I am having)...

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