Bug 1723730

Summary:	Remove the VDO option to emulate 512
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	SATHEESARAN <sasundar>
Component:	rhhi	Assignee:	Gobinda Das <godas>
Status:	CLOSED ERRATA	QA Contact:	SATHEESARAN <sasundar>
Severity:	high	Docs Contact:
Priority:	high
Version:	rhhiv-1.6	CC:	bugs, godas, rhs-bugs, sabose
Target Milestone:	---	Keywords:	ZStream
Target Release:	RHHI-V 1.7
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	cockpit-ovirt-0.13.9-1.el7ev	Doc Type:	Bug Fix
Doc Text:	Virtual Disk Optimizer devices were previously required to use 512 byte emulation before 4KB block devices were fully supported. This emulation is no longer required and has been removed now that 4KB block device support is available.	Story Points:	---
Clone Of:	1723728	Environment:
Last Closed:	2020-02-13 15:57:20 UTC	Type:	---
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:	1723728
Bug Blocks:

Description SATHEESARAN 2019-06-25 09:02:28 UTC

+++ This bug was initially created as a clone of Bug #1723728 +++

Description of problem:
-----------------------
VDO works as 512e device as 4KN support was not available earlier.
4KN support will be available with the latest sanlock package and now the VDO option to emulate 512 byte device, can be safely removed.

Version-Release number of selected component (if applicable):
-------------------------------------------------------------
cockpit-ovirt-dashboard-0.13.2

How reproducible:
-----------------
Always

Steps to Reproduce:
-------------------
1. Remove the VDO option to emulate 512

Actual results:
----------------
VDO has an option to emulate 512

Expected results:
-----------------
VDO need not emulate 512

Comment 1 SATHEESARAN 2019-06-25 09:02:53 UTC

Note: QE validation of 4KN device support is still under testing, and this can be completed only by mid of July. So please proceed with the fix, only after QE acks the 4KN support works

Comment 2 SATHEESARAN 2019-08-07 14:03:33 UTC

As per RHHI-V Pgm call on 07-Aug, re-targeting this bug to RHV 4.3.7 as 4KN support had other issues to be solved

Comment 7 SATHEESARAN 2020-01-09 07:14:23 UTC

The dependent bug is ON_QA and moving this bug too to ON_QA

Comment 8 SATHEESARAN 2020-01-09 10:01:48 UTC

Tested with cockpit-ovirt-dashboard-0.13.9

When the gluster-inventory.yml file is generated with VDO enabled,
emulate512 is set to 'off'   

<snip>
        - name: vdo_sdc
          device: /dev/sdc
          slabsize: 32G
          logicalsize: 5000G
          blockmapcachesize: 128M
          readcache: enabled
          readcachesize: 20M
          emulate512: 'off'
          writepolicy: auto
</snip>

Comment 12 errata-xmlrpc 2020-02-13 15:57:20 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:0508