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Bug 2072049 - Pull MSG_ZEROCOPY on QEMU Live Migration Patches into RHEL 8
Summary: Pull MSG_ZEROCOPY on QEMU Live Migration Patches into RHEL 8
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: qemu-kvm
Version: 8.6
Hardware: Unspecified
OS: Unspecified
unspecified
urgent
Target Milestone: rc
: ---
Assignee: Leonardo Bras
QA Contact: Li Xiaohui
URL:
Whiteboard:
Depends On:
Blocks: 2089433 2110203 2117252
TreeView+ depends on / blocked
 
Reported: 2022-04-05 13:48 UTC by Nils Koenig
Modified: 2022-12-28 02:44 UTC (History)
18 users (show)

Fixed In Version: qemu-kvm-6.2.0-17.module+el8.7.0+15924+b11d8c3f
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
: 2117252 (view as bug list)
Environment:
Last Closed: 2022-11-08 09:19:55 UTC
Type: Feature Request
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Gitlab redhat/rhel/src/qemu-kvm qemu-kvm merge_requests 185 0 None None None 2022-05-19 21:48:00 UTC
Gitlab redhat/rhel/src/qemu-kvm qemu-kvm merge_requests 191 0 None None None 2022-05-31 05:03:13 UTC
Red Hat Issue Tracker RHELPLAN-117907 0 None None None 2022-04-05 13:59:45 UTC
Red Hat Product Errata RHSA-2022:7472 0 None None None 2022-11-08 09:20:49 UTC

Comment 1 John Ferlan 2022-04-05 20:30:36 UTC 
Move to RHEL not RHEL-AV
Comment 2 John Ferlan 2022-04-05 20:38:45 UTC 
Directly assigned as a result of owning RHEL9 bug.  

I did not reset target release to 8.5 as I'm not sure that will be possible. It's an engineering decision in the long run, but would involve trying to apply more recent upstream changes to an older qemu since RHEL 8.5 was based on qemu-4.2, while RHEL 8.6 and beyond will be based on qemu-6.2.

Cloning this bug to resolve a RHEL-AV bug is technically possible, but not preferred.
Comment 6 Leonardo Bras 2022-05-24 05:02:21 UTC 
David Gilbert created an issue for implementing this at Libvirt gitlab repo:
https://gitlab.com/libvirt/libvirt/-/issues/306

I am not sure if someone is already working on that, but I could see no merge request nor master commit related to that.
So, I am currently trying to understand how to add that in libvirt, but honestly I am very new to the code, and I am still not sure how it should be done.
Comment 16 Li Xiaohui 2022-06-30 09:24:43 UTC 
Hi leonardo, 

Thanks for the update of DTM and ITM. Just a reminder here that DTM 18 is July 4, can we get the available qemu-kvm downstream before that? 

Since QE also needs at least one week to test this future feature. I would suggest move ITR from 8.7.0 to 8.8.0 if we still can't make the qemu-kvm available in downstream before DTM 18/19. 

Thanks for the understand!
Comment 17 Camilla Conte 2022-07-12 13:09:34 UTC 
Fix included in qemu-kvm-6.2.0-17.el8

Fixed by merge request 'MSG_ZEROCOPY + Multifd @ rhel8.7' ( https://gitlab.com/redhat/rhel/src/qemu-kvm/qemu-kvm/-/merge_requests/191 )
Comment 20 Li Xiaohui 2022-07-12 15:25:45 UTC 
Hi Camilla, Why don't we have "qemu-kvm-6.2.0-17.el8" in "Fixed In Version"
Comment 21 Li Xiaohui 2022-07-13 06:26:22 UTC 
Move ITM from 20 to 21 for fully tests about zerocopy.
Comment 22 Yanan Fu 2022-07-13 09:14:17 UTC 
QE bot(pre verify): Set 'Verified:Tested,SanityOnly' as gating/tier1 test pass.
Comment 23 Li Xiaohui 2022-07-24 14:34:26 UTC 
Verify this bug on qemu-kvm-6.2.0-18.module+el8.7.0+15999+d24f860e.x86_64, same test results as https://bugzilla.redhat.com/show_bug.cgi?id=1968509#c23

I have cloned one bug for RHEL 8.7.0:
Bug 2110203 - zerocopy capability can be enabled when set migrate capabilities with multifd and compress/xbzrle together

For dst qemu crash issue under postcopy + multifd scenario, I will wait for Leonardo's reply to decide to whether need to clone:
https://bugzilla.redhat.com/show_bug.cgi?id=2106726#c1


Mark this bug as verified per above test results.
Comment 24 Li Xiaohui 2022-07-24 14:36:57 UTC 
I would add test cases in migration test plan later, so remove the "SanityOnly" from Verified firstly.
Comment 30 errata-xmlrpc 2022-11-08 09:19:55 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 (Low: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update), 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/RHSA-2022:7472
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