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Bug 1599785

Summary:	_is_prefix should return false for 0-length strings
Product:	[Community] GlusterFS	Reporter:	Kaushal <kaushal>
Component:	glusterd	Assignee:	Kaushal <kaushal>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	4.1	CC:	bugs
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-4.1.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1599783	Environment:
Last Closed:	2018-07-30 19:02:48 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:	1599783
Bug Blocks:

Description Kaushal 2018-07-10 15:16:38 UTC

+++ This bug was initially created as a clone of Bug #1599783 +++

The `_is_prefix` function in glusterd-utils.c is used to check if one of 2 given paths contains the other. When one of the passed paths is a 0-length string, `_is_prefix` returns true. This is incorrect, as a 0-length string is not a path, and isn't a prefix of the other.

The current behaviour sometimes causes problems when creating new volumes, as it causes new brick paths to appear to contain/be contained by old bricks.
Because of issues with volume deletion and volume sync, there are cases when stale volumes with stale and incomplete brickinfo could be present.

Comment 1 Worker Ant 2018-07-10 15:40:57 UTC

REVIEW: https://review.gluster.org/20491 (glusterd: _is_prefix should handle 0-length paths) posted (#1) for review on release-4.1 by Kaushal M

Comment 2 Worker Ant 2018-07-24 10:29:37 UTC

COMMIT: https://review.gluster.org/20491 committed in release-4.1 by "Shyamsundar Ranganathan" <srangana> with a commit message- glusterd: _is_prefix should handle 0-length paths

If one of the paths given to _is_prefix is 0-length, then it is not a
prefix of the other. Hence, _is_prefix should return false.

Change-Id: I54aa577a64a58940ec91872d0d74dc19cff9106d
fixes: bz#1599785
Signed-off-by: Kaushal M <kaushal>

Comment 3 Shyamsundar 2018-07-30 19:02:48 UTC

This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-4.1.2, please open a new bug report.

glusterfs-4.1.2 has been announced on the Gluster mailinglists [1], packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist [2] and the update infrastructure for your distribution.

[1] https://lists.gluster.org/pipermail/announce/2018-July/000106.html
[2] https://www.gluster.org/pipermail/gluster-users/