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

[git-owner CC dutifully removed]

On Thu, Apr 16, 2015 at 05:48:42PM +0200, Johannes Schindelin wrote:

Hi Peff,

On 2015-04-16 17:28, Jeff King wrote:

quoted

On Thu, Apr 16, 2015 at 01:35:05PM +0200, Andreas Mohr wrote:

quoted

I strongly suspect that git's repacking implementation
(probably unrelated to msysgit-specific deviations,
IOW, git *core* handling)
simply is buggy
in that it may keep certain file descriptors open
at least a certain time (depending on scope of implementation/objects!?)
beyond having finished its operation (rename?).

Hrm. [... detailed analysis, including a Minimal, Complete & Verifiable Example ...]

Thank you so much! I will definitely test this (at the moment, I have to recreate my build environment in a different VM than I used so far, that takes quite some time...)

Your hash-object script successfully and with ease
managed to provoke the issue again, thanks a lot!
(syntax issue though: missed a '|' pipe).

And I then did some unload tests (force-unloaded, via End Process Tree) of the virus,
and the unlink issue persisted
(but to be truly certain, I would have to rename away
the entire virus installation tree).
Not to mention that it already looks anyway
like we seem to be on the way of nailing a genuine git handling bug...

Also, I have a very hard time remembering that the "retry unlink?" EVER
finally ended up successful (despite virus file activity surely being a very
temporary thing!).

So much for some "related" observations that I can contribute currently
- I had no time left to actually work on it today
but I'll try to do some testing given the very detailed
(and gratifyingly matching :) analysis of Jeff King (thanks a lot, too!).

Andreas Mohr

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