Change in vdsm[master]: walk around threading and pipe problem

xiawenc at linux.vnet.ibm.com xiawenc at linux.vnet.ibm.com
Thu Apr 19 06:50:07 UTC 2012


Wenchao Xia has posted comments on this change.

Change subject: walk around threading and pipe problem
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Patch Set 1:

added an attachment in bug808853
https://bugzilla.redhat.com/show_bug.cgi?id=808853

Thread_Pipe_Test.py, a test python file to reproduce it without vdsm. Running it about 10 times should result in thread 1 hanging.

I am trying to build latest python release, so can't fire a bug in python issue tracker now. But there are some discuss about subprocess issue there:
http://bugs.python.org/issue2320,

It is similar to what I observed, hangs on a thread calling subprocess pipe, conclusion is it is fixed in python 3.2, but not python 2.7. My test case is that one thread hanging at subprocess pipe call while another thread call start(). So more validation is needed on python 3.2 to see if it covers the situation.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I72e2eac7c15fd147b953eebf701257469546d62b
Gerrit-PatchSet: 1
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Wenchao Xia <xiawenc at linux.vnet.ibm.com>
Gerrit-Reviewer: Adam Litke <agl at us.ibm.com>
Gerrit-Reviewer: Ayal Baron <abaron at redhat.com>
Gerrit-Reviewer: Dan Kenigsberg <danken at redhat.com>
Gerrit-Reviewer: Mark Wu <wudxw at linux.vnet.ibm.com>
Gerrit-Reviewer: Saggi Mizrahi <smizrahi at redhat.com>
Gerrit-Reviewer: Shu Ming <sming56 at gmail.com>
Gerrit-Reviewer: Wenchao Xia <xiawenc at linux.vnet.ibm.com>


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