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Bug 224593 - virt-install does not allow for HVM serial console capture
Summary: virt-install does not allow for HVM serial console capture
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: python-virtinst
Version: 5.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Jeremy Katz
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2007-01-26 16:01 UTC by Stephen Tweedie
Modified: 2007-11-30 22:07 UTC (History)
4 users (show)

Fixed In Version: RHEA-2007-0636
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2007-11-07 18:09:30 UTC
Target Upstream Version:

Attachments (Terms of Use)
Enable a serial port in HVM guests (deleted)
2007-01-26 20:19 UTC, Daniel Berrange
no flags Details | Diff

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHEA-2007:0636 normal SHIPPED_LIVE python-virtinst enhancement update 2007-10-30 15:47:18 UTC

Description Stephen Tweedie 2007-01-26 16:01:43 UTC
Description of problem:
When virt-install creates a new guest for an HVM install, it does not set up a
qemu-dm serial console device (equivalent to

serial = "pty" # enable serial console

in a xen config file.)  As a result, it is completely impossible to capture
kernel serial console output from a guest install for debugging purposes.

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

Comment 1 Daniel Berrange 2007-01-26 20:19:51 UTC
Created attachment 146709 [details]
Enable a serial port in HVM guests

The persistent config file created for HVM guests in /etc/xen already turns on
the serial console. The libvirt XML used for the initial boot, however, does
not define a serial port. The fix is simple - just add

  <console device='pty'/>

To the XML used to create the guest.

I have attached a patch which does just this.

With this patch applied you should be able to do something like:

 virt-install -n new2 -r 500 -f /var/lib/xen/images/new2.img -s 2 --vnc -v -c
/root/boot.iso -d

And on the syslinux/grub boot command line add 'console=ttyS0 console=tty0' and
then connect to the console with the usual 'xm console'. I have tested this
with a FC6 fullvirt install.

Comment 3 RHEL Product and Program Management 2007-05-01 17:33:29 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 4 Daniel Berrange 2007-06-14 18:52:23 UTC
A python-virtinst-0.103.0-1.el5  update has been built in dist-5E-qu-candidate
which addresses this bug. All HVM guests now have a serial console configured
during install.

* Tue May  1 2007 Daniel P. Berrange <> - 0.103.0-1.el5
- Update to 0.103.0 upstream release (bz #243465)

Example invocation for test

Start a new guest...

# virt-install --location --hvm --vnc
--noautoconsole --file /var/lib/xen/images/rhel5fv.img --file-size 5 --name
rhel5fv --ram 500 

And see it has a serial console configured

# virsh dumpxml rhel5fv | grep console
    <console tty='/dev/pts/1'/>

On the syslinux boot screen for Anaconda you can now request use of serial line
& see output with   'virsh console rhel5fv'

Comment 8 Cole Robinson 2007-08-10 17:00:50 UTC
Bug reproduced on GA, verified as fixed in python-virtinst-0.103.0-2.el5.
Setting bug status to VERIFIED.

Comment 10 errata-xmlrpc 2007-11-07 18:09:30 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.

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