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Re: [Xen-devel] HVMs terminating as (null)



On 23/11/13 16:14, Steven Haigh wrote:
> Hi all,
>
> Running Xen 4.2.3 with all the current XSA fixes.
>
> Whenever I shutdown / reboot a Windows HVM DomU, it ends up going into a
> (null) state - which I can't seem to kill / destroy / clean up from.
>
> # xl list
> Name                                        ID   Mem VCPUs      State
> Time(s)
> Domain-0                                     0  1579     2     r-----
> 322927.2
> (null)                                       1     0     1     --psrd
> 14075.9
> (null)                                       2     0     1     --psrd
> 58467.6
> (null)                                       3     0     0     --ps-d
> 11604.8
> (null)                                       4     0     2     --p--d
> 24186.1
> (null)                                       5     0     2     --ps-d
> 22831.0
>
> The config is very simple:
> # cat /etc/xen/remotedesktop.vm
> name            = "remotedesktop.vm"
> memory          = 1536
> vcpus           = 2
> cpus            = "1-3"
> cpu_weight      = 128
> disk            = [ 'phy:/dev/vg_raid1/remotedesktop.vm,hda,w' ,
> 'file:/root/win7x86.iso,hdc:cdrom,r' ]
> vif             = [ 'mac=98:95:00:07:07:07, bridge=br203, vifname=vm.rdp' ]
> builder         = "hvm"
> usbdevice       = "tablet"
> vnc             = 1
> vnclisten       = "10.1.1.1"
> vncdisplay      = 1 # port 5901
> vncpasswd       = ''
> localtime       = 1
> viridian        = 1
> xen_platform_pci= 1
>
> It seems that this happens no matter what I do.
>
> Has anyone come across this before?


When you have a system in this state, can you run

xl debug-keys q
xl dmesg  > xen-dmesg.log

And provide the log file.

Most likely, there will be one unfreed page keeping the domain around as a zombie.

~Andrew

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