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Bug 1355652

Summary:	[ppc64/s390x] nsm_use_hostnames=1 turns to 16777216 in big-endian architectures
Product:	Red Hat Enterprise Linux 7	Reporter:	Yongcheng Yang <yoyang>
Component:	nfs-utils	Assignee:	Steve Dickson <steved>
Status:	CLOSED WONTFIX	QA Contact:	Yongcheng Yang <yoyang>
Severity:	medium	Docs Contact:	Milan Navratil <mnavrati>
Priority:	high
Version:	7.3	CC:	bugproxy, hannsj_uhl, jkachuck, steved, xzhou
Target Milestone:	rc
Target Release:	7.7
Hardware:	ppc64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Known Issue
Doc Text:		Story Points:	---
Clone Of:
Clones:	1764075 (view as bug list)		Environment:
Last Closed:	2019-06-20 18:17:05 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:
Bug Depends On:	1264387
Bug Blocks:	1362179, 1586275, 1598750

Description Yongcheng Yang 2016-07-12 07:26:53 UTC

Description of problem:
Bug 1264387 has changed to use lockd.conf instead of sysconfig to set module lockd parameters. When testing enable/disable "nsm_use_hostnames", found that "fs.nfs.nsm_use_hostnames" shows up as 16777216 but not 1 after enabled it in ppc64 machines.
This issue *not* exists in x86_64.

Version-Release number of selected component (if applicable):
Only in ppc64 arch

How reproducible:
100% easy

Steps to Reproduce:
1. echo 'options lockd nsm_use_hostnames=1' >/etc/modprobe.d/lockd.conf
2. Re-load the module lockd or reboot system to make it effective
3. sysctl fs.nfs.nsm_use_hostnames
4. cat /sys/module/lockd/parameters/nsm_use_hostnames

Actual results:
# After enabled it
[root]# sysctl fs.nfs.nsm_use_hostnames
fs.nfs.nsm_use_hostnames = 16777216 <<<<<<<<<<<<<<<<< 
[root@]# cat /sys/module/lockd/parameters/nsm_use_hostnames 
Y
[root]# 

Expected results:
[root]# sysctl fs.nfs.nsm_use_hostnames
fs.nfs.nsm_use_hostnames = 1  <<<<<<<<<<<<<<<<<<<<<<<<<<
[root@]# cat /sys/module/lockd/parameters/nsm_use_hostnames 
Y
[root]#

Additional info:
[yoyang@yoyang-pc lockd]$ awk 'BEGIN{print log(16777216)/log(2)}'
24
[yoyang@yoyang-pc lockd]$ awk 'BEGIN{print 2**24}'
16777216
[yoyang@yoyang-pc lockd]$