>> How come it can't read `f5e44b38fc8f7e15e5e6718090d05b09912254fa` during >> "repack" while `git fsck` says everything is fine? > > Do you use separate worktrees? Very much so, indeed! > It sounds like it might be similar to this case: > > https://lore.kernel.org/git/c6246ed5-bffc-7af9-1540-4e2071eff5dc@xxxxxxxx/ That's sounds exactly right. I was actually preparing to file a separate bug report because of a similar problem I had identified where a worktree's `index` caused a similar problem (`git fsck` happy but `git gc` fails) except it was found much earlier in `git gc`, causing a "bad object" error almost right away. > If so, there are patches in the current "master" (but not in a released > version yet) that fix fsck to detect this. Good, thanks. >> More importantly: how do I diagnose this further and fix it? > > If it is the same problem (which would be a blob or maybe cached tree > missing in one of the worktree's index files), then probably you'd > either: > > 1. Accept the loss and blow away that worktree's index file (or > perhaps even the whole worktree, and just recreate it). Hmm... the problem is "that": I have about a hundred worktrees for this repository. But yes, I can just throw away all those `index` files, I guess. > (assuming that the file itself is still hanging around). > The original corruption bug itself (gc not taking into account worktree > index files) has been fixed for a while, so the theory is that this can > be lingering corruption from a repack by an older version of Git. But if > you have evidence to the contrary, we'd like to hear that, too. ;) My suspicion is that the origin of the broken state is elsewhere (maybe a power failure?) because the problem appeared "simultaneously" (a few days apart, really) for two different repositories. > I don't think --aggressive would help at all. In theory --prune=now > might, but I think even that won't help if the problem is that the > object is referenced in an index file. Indeed, I had also tried `--prune=now` and it did not help. Thanks, Stefan
