Bug 1503246

Summary:	clean up port map on brick disconnect
Product:	[Community] GlusterFS	Reporter:	Atin Mukherjee <amukherj>
Component:	glusterd	Assignee:	Atin Mukherjee <amukherj>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	mainline	CC:	bugs
Target Milestone:	---	Keywords:	Triaged
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-3.13.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1507747 1507749 (view as bug list)		Environment:
Last Closed:	2017-12-08 17:43:44 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:	1503244, 1507747, 1507749, 1526371, 1530512

Description Atin Mukherjee 2017-10-17 16:02:10 UTC

Description of problem:

GlusterD's portmap entry for a brick is cleaned up when a PMAP_SIGNOUT event is initiated by the brick process at the shutdown. But if the brick process crashes or gets killed through SIGKILL then this event is not initiated and glusterd ends up with a stale port. Since GlusterD's portmap traversal happens both ways, forward for allocation and backward for registry search, there is a possibility that glusterd might end up running with a stale port for a brick which eventually will end up with clients to fail to connect to the bricks or other daemons.

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


How reproducible:


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Additional info:

Comment 1 Worker Ant 2017-10-17 16:07:18 UTC

REVIEW: https://review.gluster.org/18541 (glusterd: clean up portmap on brick disconnect) posted (#1) for review on master by Atin Mukherjee (amukherj)

Comment 2 Worker Ant 2017-10-19 13:43:56 UTC

REVIEW: https://review.gluster.org/18541 (glusterd: clean up portmap on brick disconnect) posted (#2) for review on master by Atin Mukherjee (amukherj)

Comment 3 Worker Ant 2017-10-31 04:37:16 UTC

COMMIT: https://review.gluster.org/18541 committed in master by  

------------- glusterd: clean up portmap on brick disconnect

GlusterD's portmap entry for a brick is cleaned up when a PMAP_SIGNOUT event is
initiated by the brick process at the shutdown. But if the brick process crashes
or gets killed through SIGKILL then this event is not initiated and glusterd
ends up with a stale port. Since GlusterD's portmap traversal happens both ways,
forward for allocation and backward for registry search, there is a possibility
that glusterd might end up running with a stale port for a brick which
eventually will end up with clients to fail to connect to the bricks.

Solution is to clean up the port entry in case the process is down as
part of the brick disconnect event. Although with this the handling
PMAP_SIGNOUT event becomes redundant in most of the cases, but this is
the safeguard method to avoid glusterd getting into the stale port
issues.

Change-Id: I04c5be6d11e772ee4de16caf56dbb37d5c944303
BUG: 1503246
Signed-off-by: Atin Mukherjee <amukherj>

Comment 4 Shyamsundar 2017-12-08 17:43:44 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-3.13.0, please open a new bug report.

glusterfs-3.13.0 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] http://lists.gluster.org/pipermail/announce/2017-December/000087.html
[2] https://www.gluster.org/pipermail/gluster-users/