git repack on shallow clone of large repo (linux kernel) hangs at "Enumerating objects"

From: Bagas Sanjaya <bagasdotme@gmail.com>
Date: May 16, 2021, 13:09 UTC
Message-ID: <c98e51b0-d89b-9170-e3bc-69ac9ec5e114@gmail.com>

Hi,

I have a shallow clone of linux-stable repo [1] on my computer. Now I'm trying to repack with `git repack -A -d`.

Before repacking, here is the object counts on my clone (`git count-objects -v`):

Show 8 quoted lines

> count: 0
> size: 0
> in-pack: 3162206
> packs: 17
> size-pack: 3120393
> prune-packable: 0
> garbage: 0
> size-garbage: 0

And I have 41496 commits (only on master).

And here are relevant config used:

> pack.deltacachesize=120M
> pack.windowmemory=400M
> pack.packsizelimit=650M
> pack.autopacklimit=0

When I trigger repack operation, I expected that all objects on 17 packs are consolidated into several 650M-sized packs. However, in my case, repacking was hang at "Enumerating objects" stage, that is I stuck at:

"Eumerating objects: 902036"

I also try to reproduce the issue with other repo, such as with local copy of GCC repo on my computer [2] using similar config, and the repack succeed without any errors.

Am I missing something?

[1]: https://github.com/gregkh/linux [2]: https://github.com/gcc-mirror/gcc

-- 
An old man doll... just what I always wanted! - Clara