Bug 725484 – kexec-tools: x86: Start using nr_cpus=1 instead of maxcpus=1

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Bug 725484 - kexec-tools: x86: Start using nr_cpus=1 instead of maxcpus=1

Summary:	kexec-tools: x86: Start using nr_cpus=1 instead of maxcpus=1

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	kexec-tools (Show other bugs)
Sub Component:
Version:	6.2
Hardware:	x86_64 Linux

Priority	high Severity high
Target Milestone:	rc
Target Release:	---
Assigned To:	Cong Wang
QA Contact:	Chao Ye
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:	717918
Blocks:	727014
	Show dependency tree / graph

Reported:	2011-07-25 11:32 EDT by Vivek Goyal
Modified:	2013-09-29 22:26 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	kexec-tools-2_0_0-196_el6
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Clones:	727014 (view as bug list)
Environment:
Last Closed:	2011-12-06 13:19:30 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Proposed patch (1.48 KB, patch) 2011-07-26 02:58 EDT, Cong Wang	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:1532	normal	SHIPPED_LIVE	Moderate: kexec-tools security, bug fix, and enhancement update	2011-12-05 20:01:52 EST

Groups: None (edit)

Description Vivek Goyal 2011-07-25 11:32:34 EDT

Description of problem:

Using nr_cpus=1 for kdump kenrel saves memory required in second kernel. Start using that for x86 and x86_64. Do not switch it for powerpc yet as kernel is not equipped to handle that yet.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:

Comment 1 Vivek Goyal 2011-07-25 11:34:22 EDT

Kernel patches for x86_64 have been committed in version kernel-2.6.32-171.el6. So we should be good to modify kexec-tools now.

Comment 3 Cong Wang 2011-07-26 02:58:27 EDT

Created attachment 515185 [details]
Proposed patch

Comment 4 Cong Wang 2011-07-26 03:21:17 EDT

Brew build:
https://brewweb.devel.redhat.com/taskinfo?taskID=3516689

Comment 6 Chao Ye 2011-09-16 05:05:52 EDT

Tested with Kdump Tier1, no regression found. Change status to VERIFIED.
https://tcms.engineering.redhat.com/run/26802/

Comment 7 errata-xmlrpc 2011-12-06 13:19:30 EST

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/RHSA-2011-1532.html

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