Re: [Libvirt-cim] Difference in the value assigned to port field for Xen, KVM, LXC

27 Jan 2009

      Kaitlin Rupert wrote:
...
Deepti B Kalakeri wrote:
...
Hi,
I am trying to verify the KVMRedirectionSAP. I am seeing difference 
in the way the port value is getting assigned.
I am trying to create a guest using DefineSystem(). Here is the 
Details of the GraphicsRASD I am passing as part of the 
ResourceSetting Parameter.
KVM_GraphicsResourceAllocationSettingData {
InstanceID = "test_redsap_dom/graphics";
ResourceType = 24;
KeyMap = "en-us";
ResourceSubType = "vnc";
Address = "127.0.0.1:5931";
};
My intention is to create a guest whose vnc port has a specific 
value, ex: 5931 in the above case.
Though the guest is getting created, the dumpxml of the guest shows 
that the port value is getting assigned to -1.
Hence the port part of the Address field in GraphicsRASD is set to 
-1. Hence the port value in the ElementName/Name is supplied as -1.
Hi Deepti,
I'm not clear which virt type you are seeing this issue on.  Is this 
with LXC only?
Nopes this is not LXC only issue. I am seeing different problems for 
different virt types.
For Xen & LXC:
Though the virsh shows the guest as running the EnabledState value for 
Xen and LXC guest is still set to 3 instead of setting a value of 6.

For Xen:
I am not able to create a guest of desired port num for Graphics 
information.
And the KVMRedirectionSAP's ElementName/Name is set to -1.

For KVM:

I am able to create a guest of desired port num for Graphics information.
And the KVMRedirectionSAP's ElementName/Name is set to the portnum 
supplied to the graphics tag.
Also, the EnabledState value is set appropriately. For ex: when the 
guest is running but the vnc session not in active use, it is getting 
set to 6 [PS: I did not find the vncserver running on the host].
...
I wasn't able to reproduce this use.  See below for the steps I 
followed.  Let me know if these steps don't work for you.
...
Also, though the virsh shows the guest as running the EnabledState 
value for Xen and LXC guest is still set to 3 instead of setting a 
value of 6.
The EnabledState of the KVMRedirectionSAP changes whenever the 
connection is available.  In this case, you'll need to be running a 
VNC server on your guest in order for the EnabledState to 
active/available.  Otherwise, the KVMRedirectionSAP is offline.
What steps will you follow to verify the EnabledState in the available 
state value ?
===================================
Steps to define an LXC guest with vnc graphics console:
1) Open file and define XML with the following:
<?xml version="1.0" encoding="UTF-8"?>
<CIM CIMVERSION="2.0" DTDVERSION="2.0">
<MESSAGE ID="5" PROTOCOLVERSION="1.0">
<SIMPLEREQ>
<METHODCALL NAME="DefineSystem">
<LOCALINSTANCEPATH>
 <LOCALNAMESPACEPATH>
  <NAMESPACE NAME="root"/><NAMESPACE NAME="virt"/>
 </LOCALNAMESPACEPATH>
 <INSTANCENAME CLASSNAME="LXC_VirtualSystemManagementService">
  <KEYBINDING NAME="CreationClassName">
   <KEYVALUE 
VALUETYPE="string">LXC_VirtualSystemManagementService</KEYVALUE>
  </KEYBINDING>
  <KEYBINDING NAME="SystemName">
   <KEYVALUE VALUETYPE="string">hostname</KEYVALUE>
  </KEYBINDING>
 </INSTANCENAME>
</LOCALINSTANCEPATH>
<PARAMVALUE NAME="SystemSettings" PARAMTYPE="string">
<VALUE>
instance of LXC_VirtualSystemSettingData {
 CreationClassName = "LXC_VirtualSystemSettingData";
 VirtualSystemIdentifier = "test";
 ElementName = "test";
 VirtualSystemType = "LXC";
 AutomaticShutdownAction = 2;
 AutomaticRecoveryAction = 3;
 BootDevice = "hd";
};
</VALUE>
</PARAMVALUE>
<PARAMVALUE NAME="ResourceSettings" PARAMTYPE="string">
 <VALUE.ARRAY>
  <VALUE>
instance of LXC_GraphicsResourceAllocationSettingData {
  InstanceID = "test/graphics";
  ResourceType = 24;
  KeyMap = "en-us";
  ResourceSubType = "vnc";
  Address = "127.0.0.1:5931";
};
 </VALUE>
 </VALUE.ARRAY>
</PARAMVALUE>
</METHODCALL>
</SIMPLEREQ>
</MESSAGE>
</CIM>
With what command did you execute the above XML.
2) Check the defined guest:
$ virsh -c lxc:///system dumpxml test
<domain type='lxc'>
  <name>test</name>
  <uuid>46c027c3-d143-4b37-97c3-ac86c9c3bca6</uuid>
  <memory>0</memory>
  <currentMemory>0</currentMemory>
  <vcpu>0</vcpu>
  <os>
    <type arch='x86_64'>exe</type>
    <init>/bin/false</init>
  </os>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <console type='pty'>
      <target port='0'/>
    </console>
    <input type='mouse' bus='xen'/>
    <graphics type='vnc' port='5931' autoport='no' listen='127.0.0.1' 
keymap='en-us'/>
  </devices>
</domain>
-- 
Thanks and Regards,
Deepti B. Kalakeri
IBM Linux Technology Center
deeptik@linux.vnet.ibm.com