On Fri, Dec 16, 2016 at 01:28:00PM -0800, Junio C Hamano wrote: > > 2. I don't understand what would cause that message. That is, what bad > > thing am I doing that I should stop doing? I've briefly skimmed the > > code and commit message, but the answer isn't leaping out at me. > > Enabling bitmap generation for incremental packing that does not > cram everything into a single pack is triggering it, I would > presume. Perhaps we should ignore -b option in most of the cases > and enable it only for "repack -a -d -f" codepath? Or detect that > we are being run from "gc --auto" and automatically disable -b? I > have a feeling that an approach along that line is closer to the > real solution than tweaking report_last_gc_error() and trying to > deduce if we are making any progress. Ah, indeed. I was thinking in my other response that "git gc" would always kick off an all-into-one repack. But "gc --auto" will not in certain cases. And yes, in those cases you definitely would want --no-write-bitmap-index. I think it would be reasonable for "git repack" to disable bitmap-writing automatically when not doing an all-into-one repack. -Peff