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Bug 1796590

Summary: NFV live migration fails with dpdk "--iova-mode va": Failed to load virtio-net:virtio
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Timothy Redaelli <tredaelli>
Component: openvswitch2.12Assignee: Adrián Moreno <amorenoz>
Status: CLOSED ERRATA QA Contact: Pei Zhang <pezhang>
Severity: high Docs Contact:
Priority: high    
Version: FDB 18.04CC: aadam, amorenoz, atragler, chayang, ctrautma, dmarchan, jhsiao, jinzhao, juzhang, kanderso, kfida, ktraynor, maxime.coquelin, nhorman, ovs-qe, pezhang, qding, ralongi, tredaelli
Target Milestone: ---Keywords: Regression
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: openvswitch2.12-2.12.0-8.el7fdn Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1792399 Environment:
Last Closed: 2020-03-10 09:36:07 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Comment 2 Pei Zhang 2020-02-05 11:35:57 UTC 
Steps: Following steps of Description. We tested with Live migration with ovs+vhost-user+dpdk scenarios.

Reproduced with openvswitch2.12-2.12.0-4.el7fdp.x86_64:

# /bin/virsh migrate --verbose --persistent --live rhel7.8 qemu+ssh://10.73.72.196/system
Migration: [100 %]error: internal error: qemu unexpectedly closed the monitor: 2020-02-05T11:30:16.928011Z qemu-kvm: -chardev socket,id=charnet1,path=/tmp/vhostuser0.sock,server: info: QEMU waiting for connection on: disconnected:unix:/tmp/vhostuser0.sock,server
2020-02-05T11:30:17.779992Z qemu-kvm: -chardev socket,id=charnet2,path=/tmp/vhostuser1.sock,server: info: QEMU waiting for connection on: disconnected:unix:/tmp/vhostuser1.sock,server
2020-02-05T11:30:32.809076Z qemu-kvm: VQ 0 size 0x400 < last_avail_idx 0x5865 - used_idx 0x9274
2020-02-05T11:30:32.809109Z qemu-kvm: Failed to load virtio-net:virtio
2020-02-05T11:30:32.809127Z qemu-kvm: error while loading state for instance 0x0 of device '0000:00:06.0:00.0/virtio-net'
2020-02-05T11:30:32.811169Z qemu-kvm: load of migration failed: Operation not permitted

Verified with openvswitch2.12-2.12.0-21.el7fdp.x86_64:
# /bin/virsh migrate --verbose --persistent --live rhel7.8 qemu+ssh://10.73.72.196/system
Migration: [100 %]

Migration works very well. There is no any error. 

So this bug has been fixed very well. Move to 'VERIFIED'.
Comment 3 Pei Zhang 2020-02-07 10:10:19 UTC 
We also tested rhel8 version, this issue has been fixed well too.

openvswitch2.12-2.12.0-21.el8fdp.x86_64 works well.
Comment 5 errata-xmlrpc 2020-03-10 09:36:07 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-2020:0745