BackupPC-users

Re: [BackupPC-users] 2 cpool files with same checksum, different (compressed content) but same zcatt'ed content?????

2008-10-31 07:27:26
Subject: Re: [BackupPC-users] 2 cpool files with same checksum, different (compressed content) but same zcatt'ed content?????
From: Holger Parplies <wbppc AT parplies DOT de>
To: "Jeffrey J. Kosowsky" <backuppc AT kosowsky DOT org>
Date: Fri, 31 Oct 2008 12:25:08 +0100
Hi,

Jeffrey J. Kosowsky wrote on 2008-10-30 23:16:05 -0400 [[BackupPC-users] 2 
cpool files with same checksum, different (compressed   content) but same 
zcatt'ed content?????]:
> [...]
> I found 2 files in my cpool that have the same checksum (one is _0)
> but 'cmp' to different values. However, when I zcat them, they have
> the same value. I thought that (lossless) compression was a 1-1
> mapping?

have you got checksum seeds enabled? This could be an artefact of your NFS
problems leading to one copy without checksum seeds and one with them, maybe?

Regards,
Holger

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