Mercurial > hg
annotate tests/lockdelay.py @ 42715:f59f8a5e9096 stable
fncache: make debugrebuildfncache not fail on broken fncache
The code reading the fncache changed in 5.0, to complain if the file
is not \n terminated. This makes apparent the fact that the fncache
gets corrupted.
Make it possible to recover, instead of having `hg
debugrebuildfncache` failing by saying `(run hg debugrebuildfncache)`.
The corruption itself is most likely due to hg not using fsync in
general, and so various bad things can happen. Here, the reported
problems happened when running out of disk space. So I suspect that
because the fncache is much bigger than the average commit/pull, when
running out of disk space, the bulk of the pull may succeed, but the
new fncache may get half-written and still renamed into place.
Differential Revision: https://phab.mercurial-scm.org/D6722
author | Valentin Gatien-Baron <vgatien-baron@janestreet.com> |
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date | Mon, 12 Aug 2019 14:00:19 -0400 |
parents | a76d5ba7ac43 |
children | 2372284d9457 |
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hg: obtain lock when creating share from pooled repo (issue5104)
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1 # Dummy extension that adds a delay after acquiring a lock. |
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hg: obtain lock when creating share from pooled repo (issue5104)
Gregory Szorc <gregory.szorc@gmail.com>
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2 # |
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Gregory Szorc <gregory.szorc@gmail.com>
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3 # This extension can be used to test race conditions between lock acquisition. |
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Gregory Szorc <gregory.szorc@gmail.com>
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4 |
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5 from __future__ import absolute_import |
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6 |
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7 import os |
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Gregory Szorc <gregory.szorc@gmail.com>
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8 import time |
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9 |
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10 def reposetup(ui, repo): |
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11 |
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12 class delayedlockrepo(repo.__class__): |
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13 def lock(self): |
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14 delay = float(os.environ.get('HGPRELOCKDELAY', '0.0')) |
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15 if delay: |
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16 time.sleep(delay) |
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17 res = super(delayedlockrepo, self).lock() |
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18 delay = float(os.environ.get('HGPOSTLOCKDELAY', '0.0')) |
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19 if delay: |
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20 time.sleep(delay) |
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21 return res |
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22 repo.__class__ = delayedlockrepo |