Bug 1614657

Summary:	[downstream clone - 4.2.6] Kdump Status is disabled after successful fencing of host.
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	RHV bug bot <rhv-bugzilla-bot>
Component:	vdsm	Assignee:	Dan Kenigsberg <danken>
Status:	CLOSED ERRATA	QA Contact:	Petr Matyáš <pmatyas>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	4.2.4	CC:	amarchuk, lsurette, lsvaty, mgoldboi, mperina, pmatyas, Rhev-m-bugs, srevivo, tburke, ycui
Target Milestone:	ovirt-4.2.6	Keywords:	ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	v4.20.39	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1607952	Environment:
Last Closed:	2018-09-04 13:43:24 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Infra	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1607952
Bug Blocks:

Description RHV bug bot 2018-08-10 07:17:30 UTC

+++ This bug is a downstream clone. The original bug is: +++
+++   bug 1607952 +++
======================================================================

Description of problem:

After successful fencing of Kdump Enabled host, Kdump status changes to Disabled state.

Version-Release number of selected component (if applicable):
rhvm-4.2.4.5-0.1.el7_3.noarch

How reproducible:
Always

Steps to Reproduce:
1. Enable kdump and check Kdump Status and confirm if it is Enabled.
2. Fence host
3. Check Kdump Status again

Actual results:
Kdump status Disabled.

Expected results:
Kdump status should be Enabled.

Additional info:
Refresh host capabilities changes correctly show Kdump status as Enabled.

(Originally by Ameya Charekar)

Comment 3 RHV bug bot 2018-08-10 07:17:40 UTC

Looking at the logs it seems that VDSM was started at 

  Jul 19 12:33:56 bb03-rhv06 systemd: Started Virtual Desktop Server Manager

and GetCaps call from engine was returned at 

  2018-07-19 12:34:11,321+0200 INFO  (jsonrpc/7) [api.host] FINISH getCapabilities

but Kdump server started later:

  Jul 19 12:36:27 bb03-rhv06 kdumpctl: kexec: loaded kdump kernel
  Jul 19 12:36:27 bb03-rhv06 kdumpctl: Starting kdump: [OK]

so GetCaps call return Kdump is not available on host. So we will need to add explicit dependency on kdump service to vdsmd service.

This issue could be workarounded by putting host to Maintenance and Activating it again manually after successfull engine restart.

(Originally by Martin Perina)

Comment 4 Petr Matyáš 2018-08-29 13:08:39 UTC

Verified on vdsm-4.20.39-1.el7ev.x86_64

Comment 6 errata-xmlrpc 2018-09-04 13:43:24 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/RHEA-2018:2624