Bug 466791 - No hvm console logging available by Xen
Summary: No hvm console logging available by Xen
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: xen
Version: 5.3
Hardware: All
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Daniel Berrangé
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-10-13 16:36 UTC by Gurhan Ozen
Modified: 2009-12-14 21:02 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-10-14 08:58:56 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Description Gurhan Ozen 2008-10-13 16:36:21 UTC
Description of problem:
This has never worked before, and still not working. 

When XENCONSOLED_LOG_GUESTS in /etc/sysconfig/xend is set to yes and rebooted , the paravirt guests are being logged, however there are no console logs available for hvm guests. 

I asked for blocker for this bug, though technically it's not blocking anything. However this is hurting our automated testing efforts as we can't provide useful data for hvm crashes/issues.

Version-Release number of selected component (if applicable):
# rpm -qa | grep xen 
xen-libs-3.0.3-73.el5
kernel-xen-2.6.18-117.el5
xen-3.0.3-73.el5
kernel-xen-devel-2.6.18-117.el5


How reproducible:
Very.

Steps to Reproduce:
1. Try to get hvm console logging.
2.
3.
  
Actual results:


Expected results:


Additional info:

Comment 2 Daniel Berrangé 2008-10-14 08:58:56 UTC
Paravirtualized guests have two consoles

  - A paravirt text console
  - A graphical framebuffer console

Fullyvirtualized guests have one console

  - A graphical framebuffer console

So you're asking for something which simply does not exist in fullyvirt guests

You could configure a serial port in the HVM guest, but this is completely separate from anything todo with paravirt text consoles, so not controlled by the XENCONSOLED_LOG_GUESTS parameter.

Latest upstream libvirt allows redirecting of a guest serial port to a file, but that's not supported in RHEL-5 libvirt, and would be very significant development effort, certainly not viable for RHEL-5.3. If you wish to have the ability to configure serial ports for HVM guests, please open a feature request against libvirt.

Comment 3 Gurhan Ozen 2008-10-14 11:46:28 UTC
Thanks Dan, this was the information i was looking for. I have opened a feature request , BZ#466891 for this.


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