Bug 1343549

Summary:	libglusterfs: Negate all but O_DIRECT flag if present on anon fds
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Krutika Dhananjay <kdhananj>
Component:	core	Assignee:	Krutika Dhananjay <kdhananj>
Status:	CLOSED ERRATA	QA Contact:	SATHEESARAN <sasundar>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rhgs-3.1	CC:	amukherj, rcyriac, rhinduja, rhs-bugs, storage-qa-internal
Target Milestone:	---	Keywords:	ZStream
Target Release:	RHGS 3.1.3
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-3.7.9-10	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-23 05:26:23 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:
Bug Blocks:	1311817

Description Krutika Dhananjay 2016-06-07 12:45:34 UTC

Description of problem:

This is to prevent any unforeseen problems that might arise due to writevs and readvs being wound with @flag parameter containing O_TRUNC or O_APPEND especially wrt translators like sharding and ec where O_TRUNC write or O_APPEND write on individual shards/fragments is not the same as O_TRUNC write or O_APPEND write as expected by the application.

Version-Release number of selected component (if applicable):


How reproducible:


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Additional info:

Comment 3 Atin Mukherjee 2016-06-08 04:00:26 UTC

An upstream patch http://review.gluster.org/#/c/14665/ is posted for review.

Comment 6 Atin Mukherjee 2016-06-10 04:28:59 UTC

Downstream patch https://code.engineering.redhat.com/gerrit/#/c/76078/ is merged now.

Comment 8 SATHEESARAN 2016-06-13 10:14:06 UTC

Tested with RHGS 3.1.3 nightly build - glusterfs-3.7.9-10.elrhgs with the following test

1. Created replica 3 volume and optimized the volume for virt-store
2. Disabled remote-dio & enable strict-o-direct on the volume
3. Created the RHEV data domain with the above created volume
4. Created 30 Application VMs
5. Ran the 100% write workload ( random write ) on  all the VMs using FIO tool
6. Repeated the test twice and there are no issues found

Comment 10 errata-xmlrpc 2016-06-23 05:26:23 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-2016:1240