1634215 – "Lost connection to MySQL server during query" when creating two cinder backups at the same time

Bug 1634215 - "Lost connection to MySQL server during query" when creating two cinder backups at the same time [NEEDINFO]

Summary: "Lost connection to MySQL server during query" when creating two cinder backu...

Keywords:
Status:	ASSIGNED
Alias:	None
Product:	Red Hat OpenStack
Classification:	Red Hat
Component:	openstack-cinder
Sub Component:
Version:	13.0 (Queens)
Hardware:	Unspecified
OS:	Unspecified
Priority:	medium
Severity:	medium
Target Milestone:	---
Target Release:	---
Assignee:	Eric Harney
QA Contact:	Avi Avraham
Docs Contact:	Kim Nylander
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2018-09-29 02:12 UTC by Chen
Modified:	2023-08-03 15:46 UTC (History)
CC List:	8 users (show)
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed:
Target Upstream Version:
Embargoed:
Flags:	tshefi: automate_bug- cchen: needinfo? (eharney) mvalsecc: needinfo? (eharney) ifrangs: needinfo? (eharney)

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
OpenStack gerrit	611079	0	'None'	NEW	NFS (chunked) backup: split reads	2021-01-24 03:09:24 UTC
Red Hat Issue Tracker	OSP-797	0	None	None	None	2023-05-24 06:55:29 UTC

Description Chen 2018-09-29 02:12:25 UTC

Description of problem:

2018-08-28 09:36:58.965 1 ERROR oslo_messaging.rpc.server [req-b37988b3-0551-497b-a7f5-5090620cae07 bef8166ac2c245cfae0098b70683b3fe 400a14fe2f3e4c53a439a84d12f3593a - default default] Exception during message handling: DBConnectionError: (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query') (Background on this error at: http://sqlalche.me/e/e3q8)

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

OSP13

How reproducible:

50% at customer's site

Steps to Reproduce:

$ openstack volume backup create <vol01>
$ openstack volume backup create <vol02> 

$ openstack volume backup list
+--------------------------------------+------+-------------+-----------+------+
| ID                                   | Name | Description | Status    | Size |
+--------------------------------------+------+-------------+-----------+------+
| c70bdb42-6f4b-42a6-8777-bc49971fb9c8 | None | None        | available |   50 |
| 15bb7efd-8461-4d8c-af8c-5e5af6310b55 | None | None        | error     |   50 |
| b8f70d5e-7371-41ea-96c8-ffabc37a2541 | None | None        | available |   10 |
+--------------------------------------+------+-------------+-----------+------+

Actual results:


Expected results:


Additional info:

The customer tested 1GB volume and this issue didn't happen

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