Re: [rdiff-backup-users] Error "Unable to compare" BUT THEN "No changes found. Directory matches." What?

[Joe Steele]

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:
https://savannah.nongnu.org/bugs/?26848

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

--Joe

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
> compare.
>
> 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