Bug 734528

Summary:	kexec-tools: Add memory usage debugging capability in second kernel
Product:	Red Hat Enterprise Linux 6	Reporter:	Vivek Goyal <vgoyal>
Component:	kexec-tools	Assignee:	Cong Wang <amwang>
Status:	CLOSED ERRATA	QA Contact:	Chao Ye <cye>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.2	CC:	amwang, anderson, jburke, jstancek, qcai, rkhan, xiyou.wangcong
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	---
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:	kexec-tools-2_0_0-199_el6	Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-12-06 18:19:41 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	743047

Description Vivek Goyal 2011-08-30 17:17:02 UTC

Description of problem:

Provide a kdump option so that memory usage can be logged in second kernel at various stages. This can be useful to determine how much memory is needed in second kernel and in debugging to figure out who is consuming most memory.

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 2011-08-30 17:19:47 UTC

We are now going to ship little modified crashkernel=auto logic in kdump and we are hoping that will work out of the box on 80% of x86 configurations by default. If it does not above debugging aid should be useful to give some idea who is consuming the memory. So 6.2 sounds like the right time to ship it out in kexec-tools.

Comment 4 Américo Wang 2011-08-31 07:17:08 UTC

Hi, Vivek,

POST status is invalid for kexec-tools bugs. What's more, Jan's patch is against Fedora, doesn't apply to RHEL6, so I need to re-generate the patch.

Comment 12 Chao Ye 2011-09-19 07:20:27 UTC

Tested with RHEL6.2-20110907.+kernel-2.6.32-198.el6+kexec-tools-2.0.0-202.el6, all PASS:
===================================
0  PASS
1  PASS
2  PASS
3  PASS

https://beaker.engineering.redhat.com/jobs/133148

Change status to VERIFIED.

Comment 13 errata-xmlrpc 2011-12-06 18:19:41 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/RHSA-2011-1532.html