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Re: [rdiff-backup-users] Error "Unable to compare" BUT THEN "No changes

From: Joe Steele
Subject: Re: [rdiff-backup-users] Error "Unable to compare" BUT THEN "No changes found. Directory matches." What?
Date: Tue, 17 Aug 2010 17:14:03 -0400
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20100713 Lightning/1.0b2 Thunderbird/3.1.1

In all likelihood, your problem is caused by hardlinked files in your backup. The "--verify" and "--compare-hash" directives in version 1.2.8 have problems with such files.

You might take a look at bug report #26848:

I have just now updated the report with a couple patches that might help.


On 8/7/2010 11:49 AM, Robinson, Eric wrote:
I've been using rdiff-backup for a while, but today was the first time I
tried using the --compare-hash directive.

First I get tons of these messages...

        Warning: Metadata file has no digest for<file>, unable to

That's scary enough by itself. But then at the end it says...

        No changes found.  Directory matches archive data.

So if it can't compare, why would it say the directory matches?

And what is the problem with the hash in the first place?

Eric Robinson

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