Bug 253221 - PVFB fails to update when installing 32-bit FC-6 guest in 64-bit host
Summary: PVFB fails to update when installing 32-bit FC-6 guest in 64-bit host
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: xen   
(Show other bugs)
Version: 5.0
Hardware: x86_64 Linux
Target Milestone: ---
: ---
Assignee: Markus Armbruster
QA Contact: Virtualization Bugs
Depends On:
TreeView+ depends on / blocked
Reported: 2007-08-17 13:50 UTC by Markus Armbruster
Modified: 2009-12-14 21:14 UTC (History)
1 user (show)

Fixed In Version: RHBA-2008-0305
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2008-05-21 15:19:48 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2008:0305 normal SHIPPED_LIVE xen bug fix and enhancement update 2008-05-20 18:04:30 UTC

Description Markus Armbruster 2007-08-17 13:50:01 UTC
Description of problem:
When I install a 32-bit FC-6 guest in a 64-bit host, the PVFB window fails update.

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

How reproducible:

Steps to Reproduce:
1. /usr/sbin/virt-install --name fc6pv32 --ram 384 --file
/var/lib/xen/images/fc6pv.img --file-size 5 --vnc -p --location
Actual results:
The PVFB window comes up, but it doesn't update.  If I terminate virt-install by
closing the window, then start run vncviewer:0, I can see a newer screen, still
not updating.  Same if I restart vncviewer.

Expected results:
The PVFB window opened by virt-install updates.

Additional info:

Comment 1 Markus Armbruster 2007-09-07 14:27:15 UTC
Update notification events do not arrive in the backend.

If I replace the frontend in kernel-2_6_18-1_2798_fc6 by a trivial backport of
the current version, updating works.  

Note that the unchanged kernel talks the old fb protocol, hence uses the
xen-vncfbo backend, while the patched kernel talks the new protocol, hence uses

Comment 2 RHEL Product and Program Management 2007-10-24 16:04:57 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update

Comment 3 Markus Armbruster 2007-10-25 18:40:16 UTC
This bug has been fixed in Fedora (xen-3.1.0-5_fc7).  The fix works for RHEL-5
as well.

Comment 5 Daniel Berrange 2008-01-03 21:10:12 UTC
Fix built for QA

$ brew latest-pkg dist-5E-qu-candidate xen
Build                                     Tag                   Built by
----------------------------------------  --------------------  ----------------
xen-3.0.3-43.el5                          dist-5E-qu-candidate  berrange

* Thu Jan  3 2008 Daniel P. Berrange <berrange@redhat.com> - 3.0.3-43.el5
- Update 32-on-64 PVFB compat fix (rhbz #253221)

Comment 8 errata-xmlrpc 2008-05-21 15:19:48 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


Note You need to log in before you can comment on or make changes to this bug.