Bug 631561

1. Feature Overview:
Feature Id: [66881]
a. Name of Feature: [6.1 FEAT] Implement lsmem and chmem
b. Feature Description
This feature provides the lsmem and chmem commands to manage memory hotplug. With lsmem, you can
display the online status of all available memory. With chmem, you can set memory online or offline.

The lsmem command lists the ranges of available memory with their online status. The listed memory
blocks correspond to the memory block representation in sysfs. The lsmem command also shows the
memory block size, the device size, and the amount of memory in online and offline state. 
The chmem command to set a particular size or range of memory online or offline

[For output use monospace font for proper display!]
lsmem sample output:
Range                                  Size (MB)  State    Removable  Device
===============================================================================
0x0000000000000000-0x000000000fffffff        256  online   no         0
0x0000000010000000-0x000000002fffffff        512  online   yes        1-2
0x0000000030000000-0x000000003fffffff        256  online   no         3
0x0000000040000000-0x000000006fffffff        768  online   yes        4-6
0x0000000070000000-0x00000000ffffffff       2304  offline  -          7-15

Memory device size  : 256 MB
Memory block size   : 256 MB
Total online memory : 1792 MB
Total offline memory: 2304 MB


2. Feature Details:
Sponsor: LTC zSeries BOE
Architectures:  zSeries - 64 native, 

Arch Specificity: purely arch specific code
Affects Kernel Modules: Field does not exist
Delivery Mechanism: Backport
Category: system management
Request Type: Package - Feature from IBM
d. Upstream Acceptance: Field does not exist
Sponsor Priority P1
f. Severity: ship issue
IBM Confidential: No
Code Contribution: IBM code
g. Component Version Target:---

3. Business Case
This tool will enhance the systems management/monitoring capabilities of customer's memory usage, by
using this very capable but at the same time low footprint tool, which will increase the customer
satisfaction.

4. Primary contact at Red Hat:
John Jarvis, jjarvis

5. Primary contacts at Partner:
Project Management Contact:
Hans-Georg Markgraf, mgrf.com

Technical contact(s):
Gonzalo Muelas Serrano, gmuelas.com