On Mon, Jan 02, 2012 at 01:31:56PM +0200, Sami Liedes wrote:
> error: Error -3 while decompressing data: incorrect data check

My best guess for this is that Obnam managed to write a partial file
to the repository when you interrupted it. This should no longer happen
in the current version.

> Interestingly, 'obnam verify /home/sliedes/Maildir/.old.nilfs/'
> reports "Verify did not find problems.". Hence I'm not sure if this is
> actual data loss.

This would indicate that at least some of the repository didn't get
corrupted. Indeed, it's probably just one or a few files.

> One thing that might be indicative that something else is wrong:
> Should the uploaded counter of 'obnam backup' stay at 0 on an
> incremental backup when nothing has changed in the directory tree? It
> doesn't, instead it increases rather quickly to the gigabytes range
> when running it on a 14 gigabyte directory tree, which seems excessive
> for an incremental backup where there is nothing to do.

The upload counter should show only data that's actually been uploaded.
I guess that the incremental backup caused more data to be uploaded
because of the way the repository got corrupted.

I hate to ask you to do this, but: if you try to do this again, does
it still happen?

-- 
All my predictions will turn out to be false

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