[libvirt] Xen network interface behavior with 0.6.2

[Daniel P. Berrange]

On Mon, Apr 20, 2009 at 12:06:16PM -0700, Kaitlin Rupert wrote:
> Daniel P. Berrange wrote:
> >On Fri, Apr 17, 2009 at 01:29:12PM -0700, Kaitlin Rupert wrote:
> >>Hi,
> >>
> >>I'm using libvirt 0.6.2 to create a Xen guest with a network type 
> >>interface (see XML below).  When the guest is defined, the interface is 
> >>converted to an ethernet type interface.  If the guest is started, the 
> >>interface is then converted to a bridge type interface.
> >
> >This sounds bad :-)  Can you provide the output of 'xm list --long 
> >hd_domain'
> >immediately after defining it, and then again immediately after starting
> >the guest.
> >
> 
> Here's the whole create process. Probably more than you needed, but 
> included for clarity ;)
> 
> 
> # virsh list --all
>  Id Name                 State
> ----------------------------------
>   0 Domain-0             running
> 
> # virsh define hd_domain
> Domain hd_domain defined from hd_domain
> 
> # xm list --long hd_domain
> Error: Domain 'hd_domain' does not exist.
> Usage: xm list [options] [Domain, ...]
> 
> List information about all/some domains.
>   -l, --long                     Output all VM details in SXP 
> 
>   --label                        Include security labels

I guess you muyst be using an old Xen without inactive domain
support ? Would this be RHEL-5 Xen by chance ?  If so, can you
also provide the /etc/xen/$GUESTNAME  config file at this point


> # virsh dumpxml hd_domain
> <domain type='xen'>
>   <name>hd_domain</name>
>   <uuid>f99fd6b6-1434-4bc2-88e0-1ed9c8c6f8e9</uuid>
>   <memory>131072</memory>
>   <currentMemory>131072</currentMemory>
>   <vcpu>1</vcpu>
>   <os>
>     <type arch='x86_64' machine='xenpv'>linux</type>
>     <kernel>/tmp/default-xen-kernel</kernel>
>     <initrd>/tmp/default-xen-initrd</initrd>
>   </os>
>   <clock offset='utc'/>
>   <on_poweroff>destroy</on_poweroff>
>   <on_reboot>restart</on_reboot>
>   <on_crash>destroy</on_crash>
>   <devices>
>     <disk type='file' device='disk'>
>       <driver name='file'/>
>       <source file='/tmp/default-xen-dimage'/>
>       <target dev='xvda' bus='xen'/>
>     </disk>
>     <interface type='ethernet'>
>       <mac address='00:11:22:33:44:aa'/>
>     </interface>
>     <console type='pty'>
>       <target port='0'/>
>     </console>
>     <input type='mouse' bus='xen'/>
>     <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' 
> keymap='en-us'/>
>   </devices>
> </domain>
> 
> # virsh start hd_domain
> Domain hd_domain started
> 
> # xm list --long hd_domain
> (domain
>     (domid 2)
>     (uuid f99fd6b6-1434-4bc2-88e0-1ed9c8c6f8e9)
>     (vcpus 1)
>     (cpu_weight 1.0)
>     (memory 128)
>     (shadow_memory 0)
>     (maxmem 128)
>     (features )
>     (name hd_domain)
>     (on_poweroff destroy)
>     (on_reboot restart)
>     (on_crash destroy)
>     (image
>         (linux
>             (kernel /tmp/default-xen-kernel)
>             (ramdisk /tmp/default-xen-initrd)
>         )
>     )
>     (device (vif (backend 0) (script vif-bridge) (mac 00:11:22:33:44:aa)))
>     (device
>         (vbd
>             (backend 0)
>             (dev xvda:disk)
>             (uname file:/tmp/default-xen-dimage)
>             (mode w)
>         )
>     )
>     (device (vkbd (backend 0)))
>     (device
>         (vfb
>             (backend 0)
>             (type vnc)
>             (vnclisten 127.0.0.1)
>             (vncunused 1)
>             (keymap en-us)
>         )
>     )
>     (state -b----)
>     (shutdown_reason poweroff)
>     (cpu_time 0.1553082)
>     (online_vcpus 1)
>     (up_time 3.70654201508)
>     (start_time 1240255648.33)
>     (store_mfn 61756)
>     (console_mfn 61755)
> )
> 
> [root at elm3b25 ~]# virsh dumpxml hd_domain
> <domain type='xen' id='2'>
>   <name>hd_domain</name>
>   <uuid>f99fd6b6-1434-4bc2-88e0-1ed9c8c6f8e9</uuid>
>   <memory>131072</memory>
>   <currentMemory>131072</currentMemory>
>   <vcpu>1</vcpu>
>   <os>
>     <type>linux</type>
>     <kernel>/tmp/default-xen-kernel</kernel>
>     <initrd>/tmp/default-xen-initrd</initrd>
>   </os>
>   <clock offset='utc'/>
>   <on_poweroff>destroy</on_poweroff>
>   <on_reboot>restart</on_reboot>
>   <on_crash>destroy</on_crash>
>   <devices>
>     <disk type='file' device='disk'>
>       <driver name='file'/>
>       <source file='/tmp/default-xen-dimage'/>
>       <target dev='xvda' bus='xen'/>
>     </disk>
>     <interface type='bridge'>
>       <mac address='00:11:22:33:44:aa'/>
>       <script path='vif-bridge'/>
>       <target dev='vif2.0'/>
>     </interface>
>     <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='5900' autoport='yes' listen='127.0.0.1' 
> keymap='en-us'/>
>   </devices>
> </domain>


Regards,
Daniel
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