Bug 713082

Summary:	multiprocessing.Pipe problem: "handle out of range in select()"
Product:	Red Hat Enterprise Linux 6	Reporter:	Igor Lvovsky <ilvovsky>
Component:	python	Assignee:	Dave Malcolm <dmalcolm>
Status:	CLOSED ERRATA	QA Contact:	Petr Šplíchal <psplicha>
Severity:	urgent	Docs Contact:
Priority:	high
Version:	6.1	CC:	abaron, danken, lpeer, ohudlick, psplicha
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:	python-2.6.6-21.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	849992 (view as bug list)		Environment:
Last Closed:	2011-12-06 10:24:22 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:
Bug Blocks:	849992

Description Igor Lvovsky 2011-06-14 08:45:01 UTC

Description of problem:

In vdsm-4.9 code we use multiprocessing.Pipe to communicate with subprocesses.
In several scenarios when we trying to run sufficiently large amount of VMs, the pipe ends raise the exception: "handle out of range in select()".
Actually, it's kind of regression from vdsm-4.5 (we didn't use multiprocessing in vdsm-4.5)

We found same issue (including the patch and reproducer) in python's issue tracker:
 http://bugs.python.org/issue10527


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Comment 6 errata-xmlrpc 2011-12-06 10:24:22 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2011-1564.html