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Re: Issue: repack semi-frequently fails on Windows (msysgit) - suspecting file descriptor issues

From
Johannes Schindelin <johannes.schindelin@gmx.de>
Date
Apr 16, 2015, 11:31 UTC
Message-ID
<27f1120c2c5231d8c7add8bdac7e3b21@www.dscho.org>
In-Reply-To
<552F98AC.5030603@virtuell-zuhause.de>
Hi,
On 2015-04-16 13:10, Thomas Braun wrote:
Show 8 quoted lines
> Am 16.04.2015 um 12:03 schrieb Andreas Mohr:
>>
>> over the years I've had the same phenomenon with various versions of msysgit
>> (now at 1.9.5.msysgit.0, on Windows 7 64bit), so I'm now sufficiently
>> confident of it being a long-standing, longer-term issue and thus I'm
>> reporting it now.
> 
> (CC'ing msysgit)
Good idea.
Show 26 quoted lines
>> Since I'm doing development in a sufficiently rebase-heavy manner,
>> I seem to aggregate a lot of objects.
>> Thus, when fetching content I'm sufficiently frequently greeted with
>> a git gc run.
>> This, however, does not work fully reliably:
>>
>>     Auto packing the repository for optimum performance. You may also
>>     run "git gc" manually. See "git help gc" for more information.
>>     Counting objects: 206527, done.
>>     Delta compression using up to 4 threads.
>>     Compressing objects: 100% (27430/27430), done.
>>     Writing objects: 100% (206527/206527), done.
>>     Total 206527 (delta 178632), reused 206527 (delta 178632)
>>     Unlink of file '.git/objects/pack/pack-ab1712db0a94b5c55538d3b4cb3660cedc264c3c.pack' failed. Should I try again? (y/n) n
>>     Unlink of file '.git/objects/pack/pack-ab1712db0a94b5c55538d3b4cb3660cedc264c3c.idx' failed. Should I try again? (y/n) n
>>     Checking connectivity: 206527, done.
>>
>> A workable workaround for this recurring issue
>> (such a fetch will fail repeatedly,
>> thereby hampering my ability to update properly)
>> is to manually do a "git gc --auto"
>> prior to the fetch (which will then succeed).
> 
> I've never had this issue. The error message from unlinking the file
> means that someone is still accessing the file and thus it can not be
> deleted (due to the implicit file locking on windows).
Best guess is that an antivirus is still accessing it. There is a tool called `WhoUses.exe` in msysGit (I do not remember if I included it into Git for Windows 1.x for end users) which could be used to figure out which process accesses a given file still: https://github.com/msysgit/msysgit/blob/master/mingw/bin/WhoUses.exe (maybe that would help you identify the cause of the problem).

Ciao, Johannes

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Previous: Thomas BraunNext: Andreas Mohr
Message 3 of 13 in “Issue: repack semi-frequently fails on Windows (msysgit) - suspecting file descriptor issues”
  1. Andreas MohrApr 16, 2015
  2. Thomas BraunApr 16, 2015
  3. Johannes SchindelinApr 16, 2015
  4. Andreas MohrApr 16, 2015
  5. Andreas MohrApr 16, 2015
  6. Andreas MohrApr 16, 2015
  7. Johannes SchindelinApr 16, 2015
  8. Andreas MohrApr 16, 2015
  9. Jeff KingApr 16, 2015
  10. Johannes SchindelinApr 16, 2015
  11. David MillerApr 16, 2015
  12. Andreas MohrApr 16, 2015
  13. rupert thurnerApr 23, 2015

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