Bug 1306967

Summary:	[tiering]: FUSE I/O hangs for >15 hours after attaching a tier
Product:	Red Hat Gluster Storage	Reporter:	Sweta Anandpara <sanandpa>
Component:	tier	Assignee:	Mohammed Rafi KC <rkavunga>
Status:	CLOSED WONTFIX	QA Contact:	Nag Pavan Chilakam <nchilaka>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	rhgs-3.1	CC:	nbalacha, rhs-bugs
Target Milestone:	---	Keywords:	ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	tier-fuse-nfs-samba
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-02-06 17:52:23 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:

Description Sweta Anandpara 2016-02-12 10:18:44 UTC

Description of problem:
Had a 16 node setup, with a 6*2 volume 'testvol'. Ran FUSE I/O from clients and that went through. Did an attach tier 2*2, and it resulted in hanging of IO from fuse mounts. 'ls' on the mountpoint hanged as well. Rafi had a look at the setup. Disabled nfs on the volume, and I was able to regain the access of the mountpoints. 

Please note I had no NFS I/O running, or any of the NFS mounts active. 

Hit this while running the automated script 'attach_tier_trigger_rebalance' in tiering suite. 

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

How reproducible: Hit it once

Additional info:
Sosreports will be copied to http://rhsqe-repo.lab.eng.blr.redhat.com/sosreports/<bugnumber>

Comment 3 Shyamsundar 2018-02-06 17:52:23 UTC

Thank you for your bug report.

We are not further root causing this bug, as a result this bug is being closed as WONTFIX. Please reopen if the problem continues to be observed after upgrading
to a latest version.