Bug 1514330

Summary:	vmcore size is too big
Product:	[Fedora] Fedora	Reporter:	lnie <lnie>
Component:	kexec-tools	Assignee:	Dave Young <ruyang>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	27	CC:	bhe, ruyang
Target Milestone:	---	Keywords:	Reopened
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kexec-tools-2.0.15-12.fc27.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-11-25 02:37:42 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description lnie 2017-11-17 06:03:56 UTC

Description of problem:
test kdump on the virtual machine,but find the vmcore is 537M 

Version-Release number of selected component (if applicable):
kexec-tools-2.0.15-11.fc27.x86_64
kernel-4.13.12-300.fc27.x86_64

How reproducible:


Steps to Reproduce:
1. set crashkernel=256M in grub 
2. kdumpctl start  
3. echo 1 >/proc/sys/kernel/sysrq 
4. echo c >/proc/sysrq-trigger
5. reboot and check the vmcore size: ls -lth /var/crash/*/


Actual results:
-rw-------. 1 root root 537M Nov 17 13:12 vmcore
-rw-r--r--. 1 root root  43K Nov 17 13:12 vmcore-dmesg.txt

Expected results:
vmcore should be less than 50M

Additional info:

Comment 1 lnie 2017-11-17 06:13:18 UTC

memory is 1824M
disk size is 20G

Comment 2 Dave Young 2017-11-20 04:52:32 UTC

Fixed in 2.0.15-12 and later, thus update kexec-tools this should not happen any more.

Comment 3 Dave Young 2017-11-21 05:27:46 UTC

2.0.15-12 was not added in Fedora update repo yet, it was just merged in git. reopen and handle it

Comment 4 Fedora Update System 2017-11-21 05:30:04 UTC

kexec-tools-2.0.15-12.fc27.1 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-8e731156c5

Comment 5 Fedora Update System 2017-11-22 06:32:14 UTC

kexec-tools-2.0.15-12.fc27.1 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-8e731156c5

Comment 6 Fedora Update System 2017-11-25 02:37:42 UTC

kexec-tools-2.0.15-12.fc27.1 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.