Bug 1449712
| Summary: | [RFE] Support max_outputs option for virtio video | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Fangge Jin <fjin> |
| Component: | libvirt | Assignee: | Martin Kletzander <mkletzan> |
| Status: | CLOSED ERRATA | QA Contact: | Fangge Jin <fjin> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.4 | CC: | dyuan, lmiksik, rbalakri, xuzhang, zpeng |
| Target Milestone: | rc | Keywords: | FutureFeature, Upstream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-3.7.0-1.el7 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-04-10 10:43:32 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: | |||
Patch proposed upstream: https://www.redhat.com/archives/libvir-list/2017-August/msg00640.html Fixed upstream with v3.6.0-225-g66c4e1533505..v3.6.0-226-gfb61407501ee:
commit 66c4e153350507526ddefdb968b98fa453e0f390
Author: Martin Kletzander <mkletzan>
Date: Wed Aug 23 14:06:17 2017 +0200
qemu: Add capabilities for virtio-vga/gpu's max_outputs= parameter
commit fb61407501ee6c1f3a8774762df2f4bdadfeddd4
Author: Martin Kletzander <mkletzan>
Date: Wed Aug 23 14:06:41 2017 +0200
qemu: Add support for virtio-vga/gpu's max_outputs= parameter
Verify pass with libvirt-3.8.0-1.el7.x86_64
Steps:
1. Start a guest with max_outputs configuration for virtio video:
# virsh dumpxml vm2|grep head -a2
...
<video>
<model type='virtio' heads='3' primary='yes'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<video>
<model type='virtio' heads='1'/>
<alias name='video1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0d' function='0x0'/>
</video>
<video>
<model type='virtio' heads='4'/>
<alias name='video2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
</video>
...
2. Check qemu command line:
# ps aux|grep max_outputs
...
-device virtio-vga,id=video0,max_outputs=3,bus=pci.0,addr=0x2
-device virtio-gpu-pci,id=video1,max_outputs=1,bus=pci.0,addr=0xd
-device virtio-gpu-pci,id=video2,max_outputs=4,bus=pci.0,addr=0xb
...
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/RHEA-2018:0704 |
Description of problem: Qemu-kvm-rhev supports max_outputs option for virtio video,but libvirt doesn't support. Version-Release number of selected component: libvirt-3.2.0-4.el7.x86_64 qemu-kvm-rhev-2.9.0-3.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. Prepare a guest with video element as below: # virsh dumpxml rhel7.4 ... <video> <model type='virtio' heads='4' primary='yes'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> 2. Start guest: # virsh start rhel7.4 3. Check qemu command line: # ps aux|grep virtio-vga -device virtio-vga,id=video0,bus=pci.0,addr=0x2 Actual results: As step3, no max_outputs in qemu command line Expected results: In step3, there should be max_outputs in qemu command line: -device virtio-vga,max_outputs=4,id=video0,bus=pci.0,addr=0x2 Additional info: Qemu-kvm-rhev supports max_outputs: # /usr/libexec/qemu-kvm -device virtio-vga,max_outputs=3 VNC server running on ::1:5900