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Bug 682237 - Add support for configuring Spice compression options
Summary: Add support for configuring Spice compression options
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: libvirt
Version: 6.2
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Michal Privoznik
QA Contact: Virtualization Bugs
URL:
Whiteboard:
: 667628 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-03-04 15:05 UTC by Andrew Cathrow
Modified: 2014-09-07 22:53 UTC (History)
10 users (show)

Fixed In Version: libvirt-0.9.2-1.el6
Doc Type: Bug Fix
Doc Text:
Cause: SPICE supports multiple compression options to be set (e.g. image, jpeg, audio, ...). Users should be able to set these Consequence: Libvirt should allow this Change: Libvirt XML schema was extended to support these kind of settings Result: Users can set spice compression options via libvirt
Clone Of:
Environment:
Last Closed: 2011-12-06 10:55:17 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:1513 0 normal SHIPPED_LIVE libvirt bug fix and enhancement update 2011-12-06 01:23:30 UTC

Description Andrew Cathrow 2011-03-04 15:05:38 UTC 
Spice supports variable compression settings for audio, images and streaming.

We need the ability to set these on a per-vm basis.

Image compression (lossless) : 
image-compression=[auto_glz|auto_lz|quic|glz|lz|off]

JPEG compression for images over wan
jpeg-wan-compression=[auto|never|always]

Configure wan image compression (lossy for slow links)
zlib-glz-wan-compression=[auto|never|always]

Enable/disable audio stream compression 
playback-compression=[on|off]
Comment 1 Andrew Cathrow 2011-03-04 15:07:53 UTC 
David,

can someone from your team check the list of options here to make sure it's accurate and complete
Comment 2 Michal Privoznik 2011-04-13 14:39:00 UTC 
Posted upstream:

https://www.redhat.com/archives/libvir-list/2011-April/msg00641.html
Comment 3 Michal Privoznik 2011-04-14 08:46:38 UTC 
v1 wasn't good enough. Sent v2:

https://www.redhat.com/archives/libvir-list/2011-April/msg00694.html
Comment 4 Michal Privoznik 2011-04-15 07:04:09 UTC 
Pushed into upstream:

commit abb1570eac1bea918fedf17c8a29ec2c61d77abc
Author: Michal Privoznik <mprivozn>
Date:   Thu Apr 14 10:44:20 2011 +0200

    Spice: support audio, images and stream compression
    
    This extends the SPICE XML to allow variable compression settings for audio,
    images and streaming:
        <graphics type='spice' port='5901' tlsPort='-1' autoport='yes'>
            <image compression='auto_glz'/>
            <jpeg compression='auto'/>
            <zlib compression='auto'/>
            <playback compression='on'/>
        </graphics>
    
    All new elements are optional.


v0.9.0-94-gabb1570
Comment 5 Michal Privoznik 2011-04-20 07:20:45 UTC 
I've tested this against spice-0.5 (qemu-0.14.0) and spice-client-0.8.0-2 (qemu-0.12.1.2) and works well for me. Libvirt test suite doesn't object anything too.
Comment 6 zhanghaiyan 2011-05-24 10:23:21 UTC 
Seems the above graphic xml format is incorrect when testing with libvirt-0.9.1-1.el6.x86_64

1. Delete the vnc graphic info in guest xml file and add the following spice graphic info in guest
# cat /mnt/rhel61_x86_64.xml
        <graphics type='spice' port='5901' tlsPort='-1' autoport='yes'>
            <image compression='auto_glz'/>
            <jpeg compression='auto'/>
            <zlib compression='auto'/>
            <playback compression='on'/>
        </graphics>
2. # virsh define /mnt/rhel61_x86_64.xml
Check the spice info and find it is modified as below
# virsh dumpxml rhel61_x86_64
......
    <graphics type='spice' autoport='yes'      <image compression='auto_glz'/>
      <jpeg compression='auto'/>
      <zlib compression='auto'/>
      <playback compression='on'/>
/>
......
3.# virsh start rhel61_x86_64
error: Failed to start domain rhel61_x86_64
error: at line 42: error parsing attribute name
The line 42 is : <graphics type='spice' autoport='yes'      <image compression='auto_glz'/>
Comment 7 Michal Privoznik 2011-05-24 14:55:52 UTC 
Patch sent upstream for review:

https://www.redhat.com/archives/libvir-list/2011-May/msg01491.html
Comment 8 Michal Privoznik 2011-06-02 12:06:47 UTC 
Fixed and moving to POST:

commit 155542a57fa8498d762b00c3a7adc285c40a3ce9
Author: Michal Privoznik <mprivozn>
Date:   Tue May 24 13:43:30 2011 +0200

    conf: Fix incorrect spice graphic XML format on compression options
    
    If spice graphics has no <channel> elements, the output graphics XML
    is messed up. To prevent this, we need to end the <graphics> element
    just before adding any compression selecting elements.

v0.9.1-317-g155542a
Comment 9 Daniel Veillard 2011-06-23 02:50:16 UTC 
This should be fixed by the libvirt-0.9.2-1.el6 rebase
Comment 10 zhanghaiyan 2011-06-24 06:01:15 UTC 
Verified pass with libvirt-0.9.2-1.el6.x86_64
- 2.6.32-156.el6.x86_64
- qemu-kvm-0.12.1.2-2.165.el6.x86_64

1. Delete the vnc graphic info in guest xml file and add the following spice
graphic info in guest
# cat /mnt/rhel61.xml
        <graphics type='spice' port='5901' autoport='no'>
            <image compression='auto_glz'/>
            <jpeg compression='auto'/>
            <zlib compression='auto'/>
            <playback compression='on'/>
        </graphics>
2. # virsh define /mnt/rhel61.xml
3.# virsh start rhel61
Domain rhel61 started
4. Check the xml info is the same as set
# virsh dumpxml rhel61
...
    <graphics type='spice' port='5910' autoport='no'>
      <image compression='auto_glz'/>
      <jpeg compression='auto'/>
      <zlib compression='auto'/>
      <playback compression='on'/>
    </graphics>

...
5. Connect to the guest and it works well
Comment 12 Rita Wu 2011-07-06 10:30:36 UTC 
Set it as VERIFIED per comment10
Comment 13 Michal Privoznik 2011-07-28 09:28:00 UTC 
*** Bug 667628 has been marked as a duplicate of this bug. ***
Comment 14 Michal Privoznik 2011-11-11 16:16:31 UTC 
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Cause: SPICE supports multiple compression options to be set (e.g. image, jpeg, audio, ...). Users should be able to set these 

Consequence: Libvirt should allow this

Change: Libvirt XML schema was extended to support these kind of settings

Result: Users can set spice compression options via libvirt
Comment 15 errata-xmlrpc 2011-12-06 10:55:17 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.

http://rhn.redhat.com/errata/RHBA-2011-1513.html
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