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Date:	Tue, 14 Jan 2014 14:25:41 -0600
Message-ID:	<CAM7Q9ZuXqR0uWfEFqMi7kzs44=skAH-PTEBgC+jsYi9MEQ6+tg@mail.gmail.com>
Subject:	Re: git clone fails on large repos when using cygcrypto-1.0.0.dll, works with 0.9.8
From:	"Chris O'Bryan" <cobryan+cygwin AT gmail DOT com>
To:	cygwin AT cygwin DOT com
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Thanks for trying to reproduce this. Could I trouble you to try a
larger repo? I just managed to successfully check out the 10MB ffmpeg
example 6 times in a row with no issue using 1.0.0, but can never
successfully clone our 600MB internal repo. The error seems
intermittent, and a larger repo seems to provide many more chances for
it to mess up.

git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Cloning into 'linux'...
remote: Counting objects: 3339228, done.
remote: Compressing objects: 100% (500892/500892), done.
remote: Total 3339228 (delta 2809875), reused 3338567 (delta 2809378)
Receiving objects: 100% (3339228/3339228), 697.06 MiB | 976.00 KiB/s, done.
fatal: pack is corrupted (SHA1 mismatch)
fatal: index-pack failed

Thanks,
Chris

On Mon, Jan 13, 2014 at 8:19 AM, Corinna Vinschen wrote:
> On Jan 10 11:27, Chris O'Bryan wrote:
>> I've been having issues cloning large repos with git under Cygwin, but
>> only when I compiled git myself. The version of Git that Cygwin's
>> setup.exe downloads works fine, while mine would intermittently fail
>> with messages like this:
>>
>> Cloning into 'testrepo'...
>> remote: Counting objects: 41107, done
>> remote: Finding sources: 100% (15143/15143)
>> remote: Total 149668 (delta 9296), reused 148822 (delta 9296)
>> Receiving objects: 100% (149668/149668), 613.20 MiB | 6.64 MiB/s, done.
>> fatal: pack is corrupted (SHA1 mismatch)
>> fatal: index-pack failed
>>
>> Sometimes the clone would work, but not very often. Sometimes the
>> error wouldn't be SHA1 mismatch, but the result would still be cloning
>> failed. I found it odd that the binary from setup.exe worked, but my
>> compile of the same version would fail. I did a diff of the 'objdump
>> -x' from my compile and the binary from setup.exe, and the only
>> significant difference was my compile used cygcrypto-1.0.0.dll, and
>> the working version used cygcrypto-0.9.8.dll .
>>
>> I tried simply replacing cygcrypto-1.0.0.dll with a copy of
>> cygcrypto-0.9.8.dll and my problems went away. It seems like there may
>> be some regression from 0.9.8 to 1.0.0 that is causing git to
>> intermittently fail.
>>
>> Here is a link to someone else running into what appears to be the
>> same issue using the FFmpeg repo:
>> http://stackoverflow.com/questions/17764079/clone-failing-at-large-depths/21049635
>>
>> If anyone else is running into issues cloning with git on Cygwin (even
>> if the error is not the exact same message), could you try temporarily
>> replacing your cygcrypto-1.0.0.dll and check if this fixes your
>> issues?
>
> I can't reproduce this.  I tried this on 64 bit Cygwin which has git
> 1.7.9 linked against libcrypto-1.0.0.  Then I tried 32 bit 1.7.9 with
> libcrypto-0.9.8 as well as with libcrypto-1.0.0.  Then I tried the 32
> bit cygwinports version git-1.8.3.4, built against libcrypto-1.0.0.
>
> I can clone the ffmpeg repo as in the aforementioned example as often
> as I like, but I never get a problem.  This is with Cygwin 1.7.27
> and OpenSSL 1.0.1f.
>
>
> Corinna
>
> --
> Corinna Vinschen                  Please, send mails regarding Cygwin to
> Cygwin Maintainer                 cygwin AT cygwin DOT com
> Red Hat

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