Bug 2014438

Summary:	Migration takes a lots time if vm with CD-ROM
Product:	Container Native Virtualization (CNV)	Reporter:	zhe peng <zpeng>
Component:	Virtualization	Assignee:	Vladik Romanovsky <vromanso>
Status:	CLOSED NOTABUG	QA Contact:	Akriti Gupta <akrgupta>
Severity:	high	Docs Contact:
Priority:	high
Version:	4.9.0	CC:	acardace, cnv-qe-bugs, kbidarka, lpivarc, mprivozn, sgott, vromanso
Target Milestone:	---
Target Release:	4.12.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	2014482 (view as bug list)		Environment:
Last Closed:	2022-09-06 14:14:10 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:	2014482

Description zhe peng 2021-10-15 09:13:11 UTC

Description of problem:
If vm have cd-rom attach, migration will take a lots time(>6mins)

Version-Release number of selected component (if applicable):
4.9

How reproducible:
always

Steps to Reproduce:
1.In WebUI, create a windows10 vm with virtio-win cdrom attached from default template
2.wait vm start
3.Do live migration.

Actual results:
migration will take >5mins. 

Expected results:


Additional info:
If remove cdrom, migration takes 1 mins.

Comment 3 sgott 2021-10-15 17:32:09 UTC

I suspect this BZ might be the same as https://bugzilla.redhat.com/show_bug.cgi?id=2010391

Comment 6 sgott 2021-10-27 12:14:58 UTC

Increasing severity of this BZ as it impacts all Windows workloads using default templates.

Comment 9 sgott 2021-11-17 13:29:31 UTC

Vladik,

Do we have any insight into this yet?

Michal. FYI, in case you hadn't seen this BZ before.

Comment 10 Michal Privoznik 2021-11-22 13:47:45 UTC

Nothing rings any bell here. I wonder whether something is trying to copy the ISO?

Comment 11 sgott 2021-12-20 15:15:48 UTC

Zhe, is this still a problem?

Comment 14 sgott 2022-03-24 14:23:42 UTC

Vladik, do we have any insights on this?

Comment 15 Vladik Romanovsky 2022-03-24 14:28:00 UTC

(In reply to sgott from comment #14)
> Vladik, do we have any insights on this?

I didn't actively work on this yet, but I'll dedicate some time for this now.

Comment 17 sgott 2022-06-09 12:38:58 UTC

Is this still reproduceable on 4.11?

Comment 18 zhe peng 2022-06-16 03:38:45 UTC

I test this with cnv latest 4.11 build, can't reproduce, migration will finished in 1 mins
build:
$ virtctl version
Server Version: version.Info{GitVersion:"v0.53.1-44-gfc4ffc073", GitCommit:"fc4ffc07324b46158ae55de63c253cdf2b0fe3ac", GitTreeState:"clean", BuildDate:"2022-06-14T11:24:17Z", GoVersion:"go1.17.10", Compiler:"gc", Platform:"linux/amd64"}

Comment 19 Kedar Bidarkar 2022-07-14 13:53:12 UTC

Akriti, can you please retest this bug with a CD-ROM Attached to a Windows VM?

Comment 20 Akriti Gupta 2022-07-22 08:30:07 UTC

I retested this bug with cnv v4.11.0-577 
Could successfully migrate the windows vm with a CD-ROM in less than 1 min

Comment 21 Kedar Bidarkar 2022-09-06 14:14:10 UTC

As per comment 18 and comment 20, will close this bug, as it is not a Bug anymore.