Bug 1355713

Summary:	2.0: RHEL Installation Doc: section 'ceph block device installation' has wrong command to create a file system
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Harish NV Rao <hnallurv>
Component:	Documentation	Assignee:	Aron Gunn <agunn>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Harish NV Rao <hnallurv>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	2.0	CC:	asriram, kdreyer, vashastr
Target Milestone:	rc
Target Release:	2.0
Hardware:	Unspecified
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2016-09-30 17:22:36 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Harish NV Rao 2016-07-12 10:29:03 UTC

Description of problem:
The section "4.2 Ceph Block Device Installation" of doc: https://access.qa.redhat.com/documentation/en/red-hat-ceph-storage/2/installation-guide-for-red-hat-enterprise-linux/#ceph_block_device_installation contains wrong command 'mkfs-ext4' in step 4. 

The command in the doc: mkfs-ext4 -mO /dev/rbd/<pool-name>/<image-name>
What it should be: mkfs.ext4 -m5 /dev/rbd/<pool-name>/<image-name>

Replace 'mkfs-ext4' with 'mkfs.ext4' and '-m0' with '-m5' as the default value for the "-m" (reserved-blocks-percentage) is 5%. Please refer to man pages of mkfs.ext4 for more details.

Version-Release number of selected component (if applicable):
found this issue on:
[root@magna055 cephuser]# uname -a
Linux magna055 3.10.0-327.22.2.el7.x86_64 #1 SMP Thu Jun 9 10:09:10 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux
[root@magna055 cephuser]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 7.2 (Maipo)



How reproducible:


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Comment 3 Vasishta 2016-07-20 09:50:48 UTC

Hi,
I verified on both RHEL and ubuntu systems as per doc. Works fine now.

Thanks,
Vasishta Shastry