Re: BUG: commit-graph.c:1068 when doing `git pull`

From: Taylor Blau <me@ttaylorr.com>
Date: Nov 12, 2020, 14:42 UTC
Message-ID: <X61J7bWDXO/r7Ob5@nand.local>
In-Reply-To: <CAFzd1+7VxaGGMVKicuy8KnWdZoBxEHY8xS9kK1VF0Tgai=Kcxg@mail.gmail.com>

Hi Caspar,

On Mon, Nov 02, 2020 at 08:12:07PM +0100, herr.kaste wrote:

Show 8 quoted lines

> A
>
>     $ git commit-graph write
>
> did the trick.
>
> Let me know if you think there could be something useful to reproduce,
> somewhere.

I think this is worth trying to reproduce. The first message you're seeing about the commit-graph-chain.lock already existing is a red-herring: it's likely that the last time you tried to generate a commit-graph, that it hit that same BUG() and left the stale lock laying around. (I can't remember off the top of my head whether we still run the atexit handlers upon a BUG(), but even still, I could believe that some other stray process left it laying around, too).

So, what's interesting is why your commit graph ended up in a state that it got some commit without all of its parents. If you could reproduce that state, that would be interesting.

Are you using shallow or partial clones?

Show 35 quoted lines

> Regards
> Caspar Duregger
>
> Am Mo., 2. Nov. 2020 um 19:30 Uhr schrieb herr.kaste <herr.kaste@gmail.com>:
> >
> > Hi all!
> >
> > I'm stuck with this error message
> >
> >     $ git pull
> >     BUG: commit-graph.c:1068: missing parent
> > 104f5eb377763b2ed9663e8949aed265b69f000f for commit
> > c59ed9b7b6d4268ae6cb1069a9b51e02ad9aa1d8
> >
> > This happens since the last `fetch --prune origin`.
> >
> > If I do it again, I get
> >
> >     $ git pull
> >     fatal: Unable to create 'C:/Users/c-flo/AppData/Roaming/Sublime
> > Text 3/Packages/GitSavvy/.git/objects/info/commit-graphs/commit-graph-chain.lock':
> > File exists.
> >     ...
> >
> > And upon removing that file, I get the first error message again.
> >
> > I actually don't know yet how to move on from here.  I'm stuck, so I
> > appreciate any help.
> >
> >     $ git --version
> >     git version 2.29.2.windows.1
> >
> >
> > Regards
> > Caspar Duregger

Thanks, Taylor