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Re: [PATCH] perf: work around the tested repo having an index.lock

From
Junio C Hamano <gitster@pobox.com>
Date
Jun 2, 2017, 23:52 UTC
Message-ID
<xmqqd1amx80f.fsf@gitster.mtv.corp.google.com>
In-Reply-To
<20170602184506.x2inwswmcwafyvfy@sigill.intra.peff.net>
Jeff King <peff@peff.net> writes:
Show 14 quoted lines
> But I think a more compelling case is that there may be an ongoing
> operation in the original repo (e.g., say you are in the middle of
> writing a commit message) when we do a blind copy of the filesystem
> contents. You might racily pick up a lockfile.
>
> Should we find and delete all *.lock files in the copied directory? That
> would get ref locks, etc. Half-formed object files are OK. Technically
> if you want to get an uncorrupted repository you'd also want to copy
> refs before objects (in case somebody makes a new object and updates a
> ref while you're copying).
>
> I don't know how careful it's worth being. I don't really _object_ to
> this patch exactly, but it does seem like it's picking up one random
> case (that presumably you hit) and ignoring all of the related cases.

My feeling exactly. Diagnosing and failing upfront saying "well you made a copy but it is not suitable for testing" sounds more sensible at lesat to me.

Previous: Ævar Arnfjörð BjarmasonNext: Ævar Arnfjörð Bjarmason
Message 4 of 16 in “perf: work around the tested repo having an index.lock”
  1. perf: work around the tested repo having an index.lockÆvar Arnfjörð Bjarmason, Jun 2, 2017
  2. Jeff KingJun 2, 2017
  3. Ævar Arnfjörð BjarmasonJun 2, 2017
  4. Junio C HamanoJun 2, 2017
  5. Ævar Arnfjörð BjarmasonJun 3, 2017
  6. Junio C HamanoJun 4, 2017
  7. Junio C HamanoJun 4, 2017
  8. Christian CouderJun 4, 2017
  9. Ævar Arnfjörð BjarmasonJun 4, 2017
  10. Jeff KingJun 4, 2017
  11. Junio C HamanoJun 5, 2017
  12. Christian CouderJun 5, 2017
  13. Jeff KingJun 4, 2017
  14. Junio C HamanoJun 5, 2017
  15. Junio C HamanoJun 4, 2017
  16. Jeff KingJun 4, 2017

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