Bug 1305752

Summary:	RFE : Load balancing for disperse/replicate volume in pNFS
Product:	[Retired] nfs-ganesha	Reporter:	Jiffin <jthottan>
Component:	FSAL_GLUSTER	Assignee:	Jiffin <jthottan>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	devel	CC:	bugs, kkeithle, ndevos, skoduri
Target Milestone:	---	Keywords:	FutureFeature, Triaged
Target Release:	---
Hardware:	All
OS:	All
Whiteboard:
Fixed In Version:	nfs-ganesha-2.3	Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-08-09 05:09:36 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:

Description Jiffin 2016-02-09 06:33:46 UTC

Description of problem:

The afr uses gfid based hashing which selects one of the available subvolumes for read operation[1]. If a similar api is written in gfapi, we can perform load balancing at libgfapi layer.



Additional info: 

[1] afr_read_subvol_select_by_policy() in  https://github.com/GlusterFS/glusterfs/blob/master/xlators/cluster/afr/src/afr-common.c

Comment 1 Vijay Bellur 2016-02-09 07:01:35 UTC

REVIEW: http://review.gluster.org/13402 (libgfapi : Provide an api to compute hash based on gfid) posted (#1) for review on master by jiffin tony Thottan (jthottan)

Comment 2 Jiffin 2016-02-19 05:46:02 UTC

Patch got merged in upstream
https://review.gerrithub.io/#/c/263180/