Bug 1584581

Summary:	[GSS][ RPC client ping timeouts on GlusterFS mounts ]
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	nravinas
Component:	protocol	Assignee:	Milind Changire <mchangir>
Status:	CLOSED ERRATA	QA Contact:	Upasana <ubansal>
Severity:	high	Docs Contact:
Priority:	high
Version:	rhgs-3.3	CC:	abhishku, atumball, bkunal, mchangir, mruzicka, nchilaka, nravinas, rgowdapp, rhs-bugs, rkavunga, sanandpa, sankarshan, sheggodu, smali, storage-qa-internal
Target Milestone:	---	Keywords:	ZStream
Target Release:	RHGS 3.4.z Batch Update 4
Hardware:	Unspecified
OS:	Linux
Whiteboard:	rpc-ping-timeout
Fixed In Version:	glusterfs-3.12.2-41	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-03-27 03:43:39 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:	1649191, 1657798

Comment 40 Upasana 2019-02-14 08:06:31 UTC

Hi Milind,

As per the bug i see that RPC client ping timeouts were observed on fuse mounts, while running heavy workload. 
To verify the bug -
1.Is there a specific workload we should be running ?
2.Is workload for a long duration on a FUSE mount suffice to verify the bug ?

Comment 41 Milind Changire 2019-02-14 09:32:42 UTC

(In reply to Upasana from comment #40)
> Hi Milind,
> 
> As per the bug i see that RPC client ping timeouts were observed on fuse
> mounts, while running heavy workload. 
> To verify the bug -
> 1.Is there a specific workload we should be running ?
> 2.Is workload for a long duration on a FUSE mount suffice to verify the bug ?

You could create copies of a multi-gigabyte file from multiple clients so that the load is sustained for at least 10 minutes. That should stress the system enough. Also remember to check the vm sysctl tunables:
- dirty_background_bytes
- dirty_background_ratio
before you start the IO to get the expectation correct. If possible, reduce the dirty_background_ratio to minimal, eg 1%

Comment 44 errata-xmlrpc 2019-03-27 03:43:39 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-2019:0658