Re: corrupt object on git-gc

From: Andreas Ericsson <ae@op5.se>
Date: Nov 9, 2007, 13:46 UTC
Message-ID: <473464A2.7080003@op5.se>
In-Reply-To: <4fe79b4b0711090538wf483ce7j89c518962e89780e@mail.gmail.com>

Yossi Leybovich wrote:

Show 16 quoted lines

> Yossi Leybovich wrote:
>>> Hi
>>>
>>>  I know its loose but still I think there are references in the
>>> repository to this object.
>>> How I can remove it from the repository ?
>>>
> 
>> That was not a very good idea. You just moved ALL objects whose hash
>> begin with 4b out of the object database.
> 
>> Try only moving the offending file out of the 4b directory.
> 
> Did not help still the repository look for this object?
> Any one know how can I track this object and understand which file is it
>

Is this a super-secret project or you can make a tarball of the .git directory and send it to me? Trying to track down the cause through email is decidedly slow.

Show 12 quoted lines

> 
> 
> ib]$ mv .git/objects/4b/9458b3786228369c63936db65827de3cc06200 ../
> 
> ib]$ git-fsck --full
> dangling commit 0d43a63623237385e432572bf61171713dcd8e98
> dangling commit 4fc6b1127e4a7f4ff5b65a2dd8a90779b5aff3e0
> dangling commit 7da607374fe2b1ae09228d2035dd608c73dad7c8
> dangling commit 004ef09ae022c60a30f9cd61f90d18df5db3628e
> dangling commit 85112c6fabb6b8913ab244a8645d67380616eba6
> broken link from    tree 2d9263c6d23595e7cb2a21e5ebbb53655278dff8
>              to    blob 4b9458b3786228369c63936db65827de3cc06200

One tree uses the object. I'm not sure if any commit-objects use the tree. Try

for b in $(git branch --no-color -a | cut -b3-); do
for rev in $(git rev-list HEAD); do
	git ls-tree -r $rev | grep -q 2d9263c6d23595e7cb2a21e5ebbb53655278dff8
	test $? -eq 0 && echo $rev && break
done
done

If it turns up empty, you *should* be able to safely delete 2d9263c6d23595e7cb2a21e5ebbb53655278dff8 and 4b9458b3786228369c63936db65827de3cc06200

Make sure to take a backup first though.

-- 
Andreas Ericsson                   andreas.ericsson@op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231