Bug 764802 (GLUSTER-3070)

Summary:	After 'rebalance', the gfid of the file gets changed
Product:	[Community] GlusterFS	Reporter:	Amar Tumballi <amarts>
Component:	core	Assignee:	Amar Tumballi <amarts>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	high	Docs Contact:
Priority:	urgent
Version:	mainline	CC:	gluster-bugs, jdarcy, vijaykumar, vraman
Target Milestone:	---
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Hardware:	All
OS:	All
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Fixed In Version:		Doc Type:	Bug Fix
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:
Bug Blocks:	763990

Description Amar Tumballi 2011-06-22 06:46:16 UTC

Ideally, as rebalance is part of glusterfs internal activity, the 'gfid' (which is the identity for a file, like inode number) gets changed.

This is not causing any problems as of now because glusterfs being distributed system, can do a re-lookup and get the info of file even if the gfid changes, but in theory, the gfid of the file should remain same even after rebalance. (which is very important to handle open-fd rebalance).

Comment 1 Anand Avati 2011-07-14 05:01:49 UTC

PATCH: http://patches.gluster.com/patch/7711 in master (distribute: bring in feature to do rebalance from inside)

Comment 2 Anand Avati 2011-07-14 05:01:54 UTC

PATCH: http://patches.gluster.com/patch/7712 in master (glusterd-rebalance: utilize distribute's internal rebalance feature)

Comment 3 Vijaykumar 2011-08-16 09:19:30 UTC

I created a distribute volume with one brick and started it and mounted it as fuse mount. I created some 5 files using touch on the mount point and checked their gfids in the backend. Then added one brick to the volume and started rebalance,then checked gfids of all the files in the backend. Now gfids won't change with the rebalance.