On Tue, Nov 25, 2008 at 6:31 PM, Michael J Gruber <git@xxxxxxxxxxxxxxxxxxxx> wrote: > Ondrej Certik venit, vidit, dixit 25.11.2008 17:44: >> Hi, >> >> I would like to export our whole git repository to patches, and then >> reconstruct it again from scratch. Following the man page of "git >> fast-export": >> >> $ git clone git://git.sympy.org/sympy-full-history-20081023.git >> $ cd sympy-full-history-20081023 >> $ git fast-export --all --export-marks=marks > patches >> $ cd .. >> $ mkdir sympy-new >> $ cd sympy-new >> $ git init >> $ git fast-import --export-marks=marks < ../sympy-full-history-20081023/patches >> git-fast-import statistics: >> --------------------------------------------------------------------- >> Alloc'd objects: 25000 >> Total objects: 21355 ( 144 duplicates ) >> blobs : 8009 ( 0 duplicates 4529 deltas) >> trees : 10627 ( 144 duplicates 9189 deltas) >> commits: 2719 ( 0 duplicates 0 deltas) >> tags : 0 ( 0 duplicates 0 deltas) >> Total branches: 21 ( 26 loads ) >> marks: 1048576 ( 10728 unique ) >> atoms: 726 >> Memory total: 2880 KiB >> pools: 2098 KiB >> objects: 781 KiB >> --------------------------------------------------------------------- >> pack_report: getpagesize() = 4096 >> pack_report: core.packedGitWindowSize = 33554432 >> pack_report: core.packedGitLimit = 268435456 >> pack_report: pack_used_ctr = 40706 >> pack_report: pack_mmap_calls = 2791 >> pack_report: pack_open_windows = 1 / 2 >> pack_report: pack_mapped = 26177739 / 35513414 >> --------------------------------------------------------------------- >> >> >> >> However, the repository is very different to the original one. It >> contains only 191 patches: >> >> $ git log --pretty=oneline | wc -l >> 191 >> >> and it only contains couple files. Compare this with the original repository: >> >> $ git log --pretty=oneline | wc -l >> 2719 > > I get the same stats (with the dups) but a perfect rev count, when I use > git log --all. The reason is that the history in the imported repo is > disconnected at various places (at tagging commits)! Your command counts > only the revs backwards to the first "disconnection". You are right! I didn't know about "git log --all". > > So, the real issue is: Why has the result these cuts in the history? Yes, I would like to know this too. E.g. if it is a problem with our repository, or a problem in git, or whether it is just not supposed to work. > I don't know, I just noticed that turning on rename and copy detection > makes git-fast-import crash, which shouldn't happen either. Something's > not right here. CC'ing the authors of im- and export. > > BTW: Maybe you can accomplish what you want with different means? Why > export|import directly to git? I just answered this in my other email. Basically there are workarounds, but I would feel safe if I can (correctly) reconstruct the whole git repository from a human readable patches. Ondrej -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
