Bug 1305849

Summary:	cd to .snaps fails with "transport endpoint not connected" after force start of the volume.
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Shashank Raj <sraj>
Component:	snapshot	Assignee:	Avra Sengupta <asengupt>
Status:	CLOSED ERRATA	QA Contact:	Anil Shah <ashah>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	rhgs-3.1	CC:	asengupt, rcyriac, rhinduja, rhs-bugs, rjoseph, sashinde, storage-qa-internal
Target Milestone:	---	Keywords:	Triaged, ZStream
Target Release:	RHGS 3.1.3
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	glusterfs-3.7.9-1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	1306193 (view as bug list)		Environment:
Last Closed:	2016-06-23 05:07:16 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:	1299184, 1306193, 1309233

Description Shashank Raj 2016-02-09 11:55:25 UTC

Description of problem:
cd to .snaps fails with "transport endpoint not connected" after force start of the volume

Version-Release number of selected component (if applicable):
glusterfs-3.7.5-19

How reproducible:
Always

Steps to Reproduce:
1.Create a volume and start it and mount it on the client.
2.Enable USS on the volume.
3.cd to .snaps and make sure it works fine without any issues.
4.kill snapd on one node and try to cd .snaps and make sure it works fine.
5.kill snapd on second node and try to cd .snaps and make sure it works fine.
6.kill snapd on third node and try to cd .snaps and make sure it works fine.
7.kill snapd on fourth node from which the volume is mounted and try to cd .snaps and observe that if fails with "transport endpoint no connected" which is expected.
8. Now force start the volume.
9. Observe that uss is enabled on the volume and snapd is running on all the nodes after force start, however cd to .snaps fails with "transport endpoint not connected".
 


Actual results:
After force start of the volume, even though snapd is running on all the nodes and uss is enabled, cd to .snaps fails with "transport endpoint not connected"

Expected results:
After force restart of the volume, cd to .snaps should work when snapd is running on all the nodes.


Additional info:

Comment 2 Avra Sengupta 2016-02-25 05:43:46 UTC

Merged in master and 3.7

Comment 4 Avra Sengupta 2016-03-10 09:38:21 UTC

Master URL: http://review.gluster.org/#/c/13420/ (MERGED)
Release 3.7 URL: http://review.gluster.org/#/c/13457/ (MERGED)

Comment 6 Anil Shah 2016-04-11 06:28:34 UTC


When all the snapd processes are down on each node

[root@dhcp46-4 ~]# gluster v status
Status of volume: vol0
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick 10.70.46.4:/run/gluster/snaps/c7fafe9
d394b4feaae6fd35391ae192c/brick1/b1         49168     0          Y       22010
Brick 10.70.47.46:/run/gluster/snaps/c7fafe
9d394b4feaae6fd35391ae192c/brick2/b2        49168     0          Y       22424
Brick 10.70.46.213:/run/gluster/snaps/c7faf
e9d394b4feaae6fd35391ae192c/brick3/b3       49168     0          Y       19382
Brick 10.70.46.148:/run/gluster/snaps/c7faf
e9d394b4feaae6fd35391ae192c/brick4/b4       49168     0          Y       16248
Snapshot Daemon on localhost                N/A       N/A        N       N/A  
NFS Server on localhost                     2049      0          Y       14297
Self-heal Daemon on localhost               N/A       N/A        Y       14307
Snapshot Daemon on 10.70.46.148             N/A       N/A        N       N/A  
NFS Server on 10.70.46.148                  2049      0          Y       7211 
Self-heal Daemon on 10.70.46.148            N/A       N/A        Y       7221 
Snapshot Daemon on 10.70.47.46              N/A       N/A        N       N/A  
NFS Server on 10.70.47.46                   2049      0          Y       14901
Self-heal Daemon on 10.70.47.46             N/A       N/A        Y       14911
Snapshot Daemon on 10.70.46.213             N/A       N/A        N       N/A  
NFS Server on 10.70.46.213                  2049      0          Y       11111
Self-heal Daemon on 10.70.46.213            N/A       N/A        Y       11123

On client
=====================================
[root@dhcp46-47 fuse]# cd .test
-bash: cd: .test: Transport endpoint is not connected

[root@dhcp46-4 ~]# gluster v start vol0 force
volume start: vol0: success
[root@dhcp46-4 ~]# gluster v status
Status of volume: vol0
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick 10.70.46.4:/run/gluster/snaps/c7fafe9
d394b4feaae6fd35391ae192c/brick1/b1         49168     0          Y       22010
Brick 10.70.47.46:/run/gluster/snaps/c7fafe
9d394b4feaae6fd35391ae192c/brick2/b2        49168     0          Y       22424
Brick 10.70.46.213:/run/gluster/snaps/c7faf
e9d394b4feaae6fd35391ae192c/brick3/b3       49168     0          Y       19382
Brick 10.70.46.148:/run/gluster/snaps/c7faf
e9d394b4feaae6fd35391ae192c/brick4/b4       49168     0          Y       16248
Snapshot Daemon on localhost                49172     0          Y       14485
NFS Server on localhost                     2049      0          Y       14493
Self-heal Daemon on localhost               N/A       N/A        Y       14501
Snapshot Daemon on 10.70.47.46              49172     0          Y       15052
NFS Server on 10.70.47.46                   2049      0          Y       15061
Self-heal Daemon on 10.70.47.46             N/A       N/A        Y       15070
Snapshot Daemon on 10.70.46.213             49172     0          Y       11243
NFS Server on 10.70.46.213                  2049      0          Y       11251
Self-heal Daemon on 10.70.46.213            N/A       N/A        Y       11260
Snapshot Daemon on 10.70.46.148             49172     0          Y       7369 
NFS Server on 10.70.46.148                  2049      0          Y       7378 
Self-heal Daemon on 10.70.46.148            N/A       N/A        Y       7386 

[root@dhcp46-47 fuse]# cd  .test
[root@dhcp46-47 .test]# 

Bug verified on build glusterfs-3.7.9-1.el7rhgs.x86_64.

Comment 8 errata-xmlrpc 2016-06-23 05:07:16 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2016:1240