Re: Recovering from repository corruption

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On Tue, 10 Jun 2008, Denis Bueno wrote:
> On Tue, Jun 10, 2008, Jakub Narebski <jnareb@xxxxxxxxx> wrote: 
>> Denis Bueno wrote:
>>>
>>> Shouldn't these be unreferenced now that I've run filter-branch?
>>
>> Try to clone this repository (using file:/// pseudo-protocol to force 
>> transfer of objects instead of hardlinking them), and chek if the
>> problem persists in the clone too.  If not, error/missing might be
>> in "garbage".
>>
>> But I'm not sure...
> 
> You're onto something:
> 
> [dorothy.local /tmp <Tue Jun 10> <16:02:08>]
> tmp[176] > git clone file:///Volumes/work/identity.fb/
> Initialized empty Git repository in /tmp/identity.fb/.git/
> remote: Counting objects: 401, done.
> remote: Compressing objects: 100% (364/364), done.
> remote: Total 401 (delta 170), reused 0 (delta 0)
> Receiving objects: 100% (401/401), 233.76 KiB, done.
> Resolving deltas: 100% (170/170), done.
> 
> [dorothy.local /tmp <Tue Jun 10> <16:02:22>]
> tmp[177] > cd identity.fb/
> /tmp/identity.fb
> 
> [dorothy.local /tmp/identity.fb <Tue Jun 10> <16:02:24>]
> identity.fb[178] > git fsck --full
> broken link from  commit 4737fea59fdc8325e09b5206cc7a6ac593446ce3
>               to  commit fe431b4b69453ad9207a5528cf9b9d12ef69c988
> dangling commit 28aa69aafc8ae901e588f6d341b3e6d3558c6d26
> dangling commit 884a8024fbcb9367726abb25f8bb6ac539712d46
> missing commit fe431b4b69453ad9207a5528cf9b9d12ef69c988
> 
> But I've just substituted one error for another.  Are these errors
> easier to fix?

Please remember that in such clone you _don't_ have grafts info (unless
you copy it manually), so it is a good test if you correctly rewrote 
history using git-filter-branch.  So take a look at history in your 
clone using gitk or some similar tool.

In the history you mentioned:

    ...---a---*   b---c---d---*   e---...
           \     /         \     /
            \-X-/           \---/

you should rewritr from 'a'=='X^' to, and including 'e' (and not only 
from 'd').


But if it is not the case I'm afraid I wouldn't be able to offer any 
further insight...

-- 
Jakub Narebski
Poland
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