Bug 1013504 - change kernel crashkernel=auto logic in RHEL7 to not scale memory based on physical memory present in the system
Summary: change kernel crashkernel=auto logic in RHEL7 to not scale memory based on ph...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: kexec-tools
Version: 7.0
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Baoquan He
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-09-30 08:50 UTC by Baoquan He
Modified: 2013-11-04 08:10 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
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Environment:
Last Closed: 2013-11-04 08:10:40 UTC
Target Upstream Version:

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Description Baoquan He 2013-09-30 08:50:32 UTC 
Description of problem:
Currently in rhel7, cyclic mode is set by default in makedumpfile. We need to rewrite memory requirement bits section completely as now with cyclic mode we will not append 2 bits per physical page logic and it's obsolete.

That means we should change kernel crashkernel=auto logic in rhel7 to not scale memory based on physical memory present in the system.

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


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Comment 1 Dave Young 2013-11-04 08:10:40 UTC 
Per discussion in kdump team. Let's keep the original logic, because for large memory machine adding a bit crash memory will probably improve the speed. Also there's could require more memory if multiple-cpu is supported in future.
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