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Bug 1355713 - 2.0: RHEL Installation Doc: section 'ceph block device installation' has wrong command to create a file system
Summary: 2.0: RHEL Installation Doc: section 'ceph block device installation' has wron...
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat
Component: Documentation
Version: 2.0
Hardware: Unspecified
OS: Linux
Target Milestone: rc
: 2.0
Assignee: Aron Gunn
QA Contact: Harish NV Rao
Depends On:
TreeView+ depends on / blocked
Reported: 2016-07-12 10:29 UTC by Harish NV Rao
Modified: 2016-09-30 17:22 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2016-09-30 17:22:36 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description Harish NV Rao 2016-07-12 10:29:03 UTC
Description of problem:
The section "4.2 Ceph Block Device Installation" of doc: 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:

Steps to Reproduce:

Actual results:

Expected results:

Additional info:

Comment 3 Vasishta 2016-07-20 09:50:48 UTC
I verified on both RHEL and ubuntu systems as per doc. Works fine now.

Vasishta Shastry

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