Bug 626752

Summary: guest virtualization type detection during registration is flawed
Product: Red Hat Enterprise Linux 6 Reporter: Milan Zázrivec <mzazrivec>
Component: rhn-client-toolsAssignee: Milan Zázrivec <mzazrivec>
Status: CLOSED ERRATA QA Contact: Martin Minar <mminar>
Severity: medium Docs Contact:
Priority: low    
Version: 6.0CC: cperry, jhutar, mkoci, mminar, syeghiay
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: rhn-client-tools-1.0.0-45.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-05-19 13:05:01 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Milan Zázrivec 2010-08-24 10:14:01 UTC
Description of problem:
From rhnreg.py, get_virt_info():

  1.  Check /proc/xen/xsd_port.  If exists, we know the system is a
      host; exit.
  2.  Check /sys/hypervisor/uuid.  If exists and is non-zero, we know
      the system is a para-virt guest; exit.
  3.  Check SMBIOS.  If vendor='Xen' and UUID is non-zero, we know the
      system is a fully-virt guest; exit.
  4.  If non of the above checks worked; we know we have a
      non-xen-enabled system; exit.

The above logic works fine for RHEL-5 guests (Xen FV / PV, KVM), but will
not work 100% correctly for RHEL-6 FV Xen guests.

RHEL-6 fully virtualized Xen guests do have /sys/hypervisor/uuid file,
which the above logic will incorrectly recognize as paravirtualized
guests.

The simple fix for this problem would be to flip steps 2 and 3.

Version-Release number of selected component (if applicable):
rhn-client-tools-1.0.0-36.el6.noarch

How reproducible:
Always

Steps to Reproduce:
1. Install RHEL-6 FV Xen guest (on a RHEL-5 Xen host)
2. Register the system to RHN / RHN Satellite
3. Note the virtualization type
  
Actual results:
Paravirtualized guest

Expected results:
Fully virtualized guest

Additional info:
N/A

Comment 4 Milan Zázrivec 2011-01-18 15:45:18 UTC
spacewalk.git master: 2bfb9b5eb73289b2af0e7a843c97677330ff95f1
satellite.git CLIENT-RHEL-6: 248b9672cac4c2ea0d7ddbc55aa04a2b2d9c4967

Comment 6 Martin Minar 2011-02-23 11:18:37 UTC
Verified in rhn-client-tools-1.0.0-48.el6.noarch

Comment 7 errata-xmlrpc 2011-05-19 13:05:01 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 therefore 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.

http://rhn.redhat.com/errata/RHBA-2011-0565.html