Bug 1627553

Summary:	MDS leaks file descriptors across respawn
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Patrick Donnelly <pdonnell>
Component:	CephFS	Assignee:	Patrick Donnelly <pdonnell>
Status:	CLOSED ERRATA	QA Contact:	ceph-qe-bugs <ceph-qe-bugs>
Severity:	low	Docs Contact:
Priority:	medium
Version:	3.0	CC:	ceph-eng-bugs, hnallurv, john.spray, kdreyer
Target Milestone:	z1
Target Release:	3.1
Hardware:	All
OS:	All
Whiteboard:
Fixed In Version:	RHEL: ceph-12.2.5-51.el7cp Ubuntu: ceph_12.2.5-36redhat1xenial	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-11-09 00:59:32 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:

Description Patrick Donnelly 2018-09-10 20:52:36 UTC

Description of problem:

MDS leaks file descriptors across exec which causes it to run out after several respawns.

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

3.0

How reproducible:

100%. Respawn mds a few dozen times via `ceph mds fail 0`. Use single MDS cluster (no standby) to see more easily.

Steps to Reproduce:
1. while sleep 0.5; do ceph mds fail 0; done
2. MDS will eventually fail to create an event file descriptor as noted in the log and then quit.

Actual results:

Exits with failure.

Expected results:

MDS continues respawning infinitely.

Comment 10 errata-xmlrpc 2018-11-09 00:59:32 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-2018:3530