Bug 2014438 - Migration takes a lots time if vm with CD-ROM
Summary: Migration takes a lots time if vm with CD-ROM
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Container Native Virtualization (CNV)
Classification: Red Hat
Component: Virtualization
Version: 4.9.0
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
: 4.12.0
Assignee: Vladik Romanovsky
QA Contact: Akriti Gupta
URL:
Whiteboard:
Depends On:
Blocks: 2014482
TreeView+ depends on / blocked
 
Reported: 2021-10-15 09:13 UTC by zhe peng
Modified: 2022-09-06 14:14 UTC (History)
7 users (show)

Fixed In Version:
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Doc Text:
Clone Of:
: 2014482 (view as bug list)
Environment:
Last Closed: 2022-09-06 14:14:10 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

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.
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