Bug 1411764

Summary: [NetKVM] Implement VIRTIO_NET_F_GUEST_ANNOUNCE feature in Windows virtio-net driver
Product: Red Hat Enterprise Linux 7 Reporter: Yvugenfi <yvugenfi>
Component: virtio-winAssignee: Yvugenfi <yvugenfi>
virtio-win sub component: virtio-win-prewhql QA Contact: Virtualization Bugs <virt-bugs>
Status: CLOSED ERRATA Docs Contact:
Severity: medium    
Priority: high CC: ailan, amuller, chayang, ddepaula, dgilbert, jherrman, juzhang, lijin, lprosek, michen, pmorey, rfreire, virt-bugs, wyu, ybendito, yrachman, yvugenfi
Version: 7.4Keywords: FutureFeature
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Windows   
Whiteboard:
Fixed In Version: Doc Type: Enhancement
Doc Text:
The virtio-win driver now supports the VIRTIO_NET_F_GUEST_ANNOUNCE feature, which, if configured, ensures that ARP packets are recognized by the network when performing live migration of Windows guests. As a result, packet loss during the migration is significantly decreased.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-01 12:55:38 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: 1403896, 1431561    
Attachments:
Description Flags
Test 29.03 (3.04) summary none

Description Yvugenfi@redhat.com 2017-01-10 12:35:53 UTC 
Description of problem:

Based on https://bugzilla.redhat.com/show_bug.cgi?id=1403896 there is a high packet loss on Windows after live migration.

Support for the VIRTIO_NET_F_GUEST_ANNOUNCE feature is needed in Windows driver to handle live migration.

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


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:
Comment 10 Yvugenfi@redhat.com 2017-02-21 10:00:10 UTC 
https://github.com/virtio-win/kvm-guest-drivers-windows/pull/102
Comment 63 ybendito 2017-04-04 10:42:16 UTC 
Created attachment 1268602 [details]
Test 29.03 (3.04) summary
Comment 87 Stephen Gordon 2017-05-24 15:11:52 UTC 
*** Bug 1403896 has been marked as a duplicate of this bug. ***
Comment 90 Danilo de Paula 2017-06-07 19:39:03 UTC 
Back to modified as I added this by mistake.
Comment 91 Danilo de Paula 2017-06-07 19:46:41 UTC 
Is this BZ implemented in the 139 build that I got from MS?
Comment 92 ybendito 2017-06-08 05:53:59 UTC 
(In reply to Danilo Cesar de Paula from comment #91)
> Is this BZ implemented in the 139 build that I got from MS?

Yes
Comment 93 Yu Wang 2017-06-08 07:31:40 UTC 
Hi Yan and Pierre-André

if this bug can be counted as verified as there is still customer issues?

Thanks
Yu Wang
Comment 94 Pierre-Andre MOREY 2017-06-08 09:26:07 UTC 
Hi Yu,

Yes, we are still investigating this bug with customer.

Regards,
Pierre-André
Comment 98 Danilo de Paula 2017-06-08 14:29:06 UTC 
Can you confirm that? I'm closing the errata buglist.
Comment 111 errata-xmlrpc 2017-08-01 12:55:38 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, 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/RHBA-2017:2341