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

23 Jan 2009

      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.
PS: I have used values between 5900 - 5999 for the port field in the 
graphics part.

Here is the Xen XML details obtained from the debug statement.

<domain type="xen">
  <name>test_redsap_dom</name>
  <on_poweroff>destroy</on_poweroff>
  <on_crash>destroy</on_crash>
  <uuid>125f39c4-e0f0-4b2d-bb84-891700639af0</uuid>
  <os>
    <type>linux</type>
    <kernel>/tmp/default-xen-kernel</kernel>
    <initrd>/tmp/default-xen-initrd</initrd>
    <cmdline/>
  </os>
  <currentMemory>131072</currentMemory>
  <memory>131072</memory>
  <vcpu>1</vcpu>
  <devices>
    <disk type="file" device="disk">
      <source file="/tmp/default-xen-dimage"/>
      <target dev="xvda"/>
    </disk>
    <interface type="network">
      <mac address="11:22:33:aa:bb:cc"/>
      <source network="cimtest-networkpool"/>
    </interface>
    <input type="mouse" bus="xen"/>
    <graphics type="vnc" port="5931" listen="127.0.0.1" keymap="en-us"/>
  </devices>
</domain>

But I am able to create a guest with a port of my desired value for KVM.
For KVM I am able to get appropriate value for the port in the Address 
and the ElementName/Name field of the GraphicsRASD/KVMRedirectionSAP.
Here is the XML used for creating KVM guest.

<domain type="kvm">
  <name>test_redsap_dom</name>
  <on_poweroff>destroy</on_poweroff>
  <on_crash>destroy</on_crash>
  <uuid>c1c5c50b-52ce-4ba3-868e-dee42708063a</uuid>
  <os>
    <type>hvm</type>
    <boot dev="hd"/>
  </os>
  <currentMemory>131072</currentMemory>
  <memory>131072</memory>
  <vcpu>1</vcpu>
  <devices>
    <disk type="file" device="disk">
      <source file="/tmp/default-kvm-dimage"/>
      <target dev="hda"/>
    </disk>
    <interface type="network">
      <mac address="11:22:33:aa:bb:cc"/>
      <source network="cimtest-networkpool"/>
    </interface>
    <input type="mouse" bus="ps2"/>
    <graphics type="vnc" port="5948" listen="127.0.0.1" keymap="en-us"/>
  </devices>
</domain>

In case of LXC I am able to assign port value of choice and able to get 
the desired value in the Address and the ElementName/Name fields for the 
defined guest.
But the problem with the LXC is that value of the rport in the 
ElementName/Name and Address is getting set to -1 even when guest is 
started.
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.

LXC:
<domain type='lxc'>
  <name>test_redsap_dom</name>
  <uuid>05e67d5e-7702-46c4-a90b-2f416001f95b</uuid>
  <memory>131072</memory>
  <currentMemory>131072</currentMemory>
  <vcpu>0</vcpu>
  <os>
    <type arch='x86_64'>exe</type>
    <init>/tmp/cimtest_lxc_init</init>
  </os>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <filesystem type='mount'>
      <source dir='/tmp/lxc_files'/>
      <target dir='/tmp'/>
    </filesystem>
    <console type='pty' tty='/dev/pts/3'>
      <source path='/dev/pts/3'/>
      <target port='0'/>
    </console>
    <input type='mouse' bus='xen'/>
    <graphics type='vnc' port='5914' autoport='no' listen='127.0.0.1' 
keymap='en-us'/>
  </devices>
</domain>

Please let me know if there is something which I have missed.

-- 
Thanks and Regards,
Deepti B. Kalakeri
IBM Linux Technology Center
deeptik@linux.vnet.ibm.com

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

Deepti B Kalakeri