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Bug 1993575

Summary:	Missing documentation: HOWTO recover from a corrupted hosted engine meta data file.
Product:	[oVirt] ovirt-hosted-engine-ha	Reporter:	Gilboa Davara <gilboad>
Component:	Documentation	Assignee:	Steve Goodman <sgoodman>
Status:	CLOSED CURRENTRELEASE	QA Contact:	meital avital <mavital>
Severity:	medium	Docs Contact:
Priority:	high
Version:	2.4.8	CC:	bugs, didi, jspanko, mkalinin, mtessun, sbonazzo
Target Milestone:	ovirt-4.4.9	Keywords:	Documentation
Target Release:	---	Flags:	pm-rhel: ovirt-4.4+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-03 13:52:16 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Integration	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Gilboa Davara 2021-08-14 05:53:45 UTC

Description of problem:

Long story short (1).
Single host self hosted engine test setup.
One of the drives in a RAID6 died, somehow taking the host off-line.
Replaced the drive, restarted the host, broker and agent refused to start due to corrupted meta data file.
With the help of Yedidyah Bar David I managed to clear the meta data file (2) and return the host to normal.

(1) Full mailing list thread:
https://lists.ovirt.org/archives/list/users@ovirt.org/thread/LG5WEGGIDJIZSRCHSZLY2UUSVFBW6GTN/
(2) Undocumented solution:
https://lists.ovirt.org/pipermail/users/2016-April/072676.html

Comment 2 RHEL Program Management 2021-08-19 07:31:03 UTC

The documentation text flag should only be set after 'doc text' field is provided. Please provide the documentation text and set the flag to '?' again.

Comment 3 Steve Goodman 2021-09-02 15:13:43 UTC

Sandro,

Please give this a priority. Right now it's has no priority/severity set and the PM score is 0.

Comment 5 Marina Kalinin 2021-09-13 20:33:38 UTC

Hi Gilboa and Didi,

I looked into the manual HE metadata cleanup and I am wondering if it is not a better option to use the existing hosted-engine --clean-metadata verb?

~~~
# hosted-engine --clean_metadata --host-id=52 
~~~

Also, are you truly having 52 hosts to support your single HE VM? I hope not. It is not recommended to use more than few hosts that can provide High Availability for your Hosted Engine VM. It is unnecessary complication of things.

Comment 6 Marina Kalinin 2021-09-13 20:39:15 UTC

Ok, I see now this newer thread: https://lists.ovirt.org/archives/list/users@ovirt.org/message/DXPXGU4FKWJOJZJM7CKAB7ZJZFR7NJZE/.

Comment 8 Gilboa Davara 2021-09-17 12:54:54 UTC

As you can see (in the ML thread) --clean_metadata failed. I had to manually clean the meta-data file.

- Gilboa

Comment 9 Marina Kalinin 2021-09-17 21:00:47 UTC

Thanks, yeah, I read that later.