Bug 1286070 – DHT - rebalance - Once User has run rebalance with 'start force' option and after successful completion of it, nothing got changed on volume.re run of rebalance is migrating files

Bug 1286070 - DHT - rebalance - Once User has run rebalance with 'start force' option and after successful completion of it, nothing got changed on volume.re run of rebalance is migrating files

Summary:	DHT - rebalance - Once User has run rebalance with 'start force' option and ...

Status:	CLOSED CURRENTRELEASE

Aliases:	None

Product:	Red Hat Gluster Storage
Classification:	Red Hat
Component:	distribute (Show other bugs)
Sub Component:
Version:	3.1
Hardware:	x86_64 Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Nithya Balachandran
QA Contact:	storage-qa-internal@redhat.com
Docs Contact:

URL:
Whiteboard:	dht-rebalance, dht-fixed
Keywords:	ZStream

Depends On:	956208
Blocks:
	Show dependency tree / graph

Reported:	2015-11-27 05:31 EST by Susant Kumar Palai
Modified:	2016-09-09 06:04 EDT (History)
CC List:	12 users (show)

See Also:
Fixed In Version:	3.7.9-10
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:	956208
Environment:
Last Closed:	2016-09-09 06:04:56 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Comment 2 Raghavendra G 2016-06-28 08:21:13 EDT

In the version specified, fix-layout changed the layout blindly even though the layout is spread on all the bricks and it doesn't has any anomalies (holes/overlaps). So, the second run of rebalance might've changed the layout and hence file migration. However this behavior is fixed in 3.1. It needs to retested.

Comment 4 Prasad Desala 2016-09-09 00:44:41 EDT

This issue is not seen on gluster build: 3.7.9-10.el7rhgs.x86_64.

Here are the steps that were followed,

1. Created a Distributed replica volume and started it.
2. Fuse Mounted the volume from the client-1 and created files and directories.
4. Added few bricks and started rebalance for that volume with force option.
5. Rebalance completed successfully as expected.
6. Without making any changes to I/O on mount point again started rebalance for that volume with force option.

Rebalance was completed and no files were rebalanced/migrated as there were no changes to I/O on mount point which is expected.

Hence, moving this bug state to Verified.

Comment 5 Nithya Balachandran 2016-09-09 06:04:56 EDT

Thanks Prasad. 

Closing this BZ as per comment#4.

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