Re: [Xen-users] help on FreeBSD using hvm

[Sergi Seira <s.seira@xxxxxxxxx>]

Hello,

I've made some progress ...

I found that one could set up a tap interface with:

# modprobe tun
# tunctl -t tap0

a command included in uml-utilities package for debian (dist. I'm using).

Now the domain starts and spends some CPU time but dies:

# tail xend.log
[2007-02-27 16:24:50 xend.XendDomainInfo 3297] WARNING
(XendDomainInfo:950) Domain has crashed: name=FreeBSD60_01 id=8.
[2007-02-27 16:24:50 xend.XendDomainInfo 3297] DEBUG
(XendDomainInfo:1483) XendDomainInfo.destroy: domid=8
[2007-02-27 16:24:50 xend.XendDomainInfo 3297] DEBUG
(XendDomainInfo:1491) XendDomainInfo.destroyDomain(8)
[2007-02-27 16:24:50 xend 3297] DEBUG (image:533) hvm shutdown watch
unregistered
[2007-02-27 16:24:50 xend 3297] DEBUG (image:572) hvm reboot feature
watch unregistered

It seems a problem with vnc?

# tail qemu-dm.8309.log
domid: 7
qemu: the number of cpus is 1
qemu_map_cache_init nr_buckets = 1000
shared page at pfn:ffff
buffered io page at pfn:fffd
vncviewer execlp failed
char device redirected to /dev/pts/2
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0

I'm stuck here right now. Any ideas?
Why do you think I have to do this things (tun/tap) by hand instead of
been done by xm?

About the cdrom issue ... I removed the cdrom part and could see the
qemu log complaining about not including /dev/cdrom.

Thanks,
regards,
Sergi




Mark Williamson wrote:
>> CPU time doesn't go up.
> 
> Weird.  It's strange given the guest also isn't paused...
> 
>> I've checked /var/log/xen/qemu-dm.19594.log (I missed this files before
>> posting):
> 
> I noticed that you had the physical CD-ROM drive mapped as the guests virtual 
> CDROM.  Could you try taking that out, please?  I'm not at all convinced 
> that's the source of the problem but I do remember having problems when I 
> tried to do that myself (that was for an installation of Windows - I ended up 
> ripping the CD to an ISO and using that as the virtual CD drive!)
> 
> Cheers,
> Mark
> 
>> domid: 3
>> qemu: the number of cpus is 1
>> warning: could not open /dev/net/tun: no virtual network emulation
>> Could not initialize device 'tap'
>>
>> After searching a little I found that maybe:
>>
>> modprobe tun
>>
>> would work, but I get the same error.
>>
>> Do I have to recompile xen with some tun/tap option?
>>
>> Thanks for your quick answer.
>> Regards,
>> Sergi
>>
>> Mark Williamson wrote:
>>>> I'm trying to install FreeBSD 6.0 from cdrom to a fully virtualized
>>>> machine. I've already run domU using xen patched kernels without a
>>>> problem, but can't create a fully virtualized domU.
>>>>
>>>> I am running :
>>>>
>>>>  - AMD dual opteron with SVM Code option enabled (BIOS)
>>>>  - xen 3.0.4 compiled from sources
>>> OK.  It *should* work - my own test machine is an AMD-V box running
>>> 3.0.4-testing
>>>
>>>> When issuing :
>>>>
>>>> # xm create xm_fbsd.hvm
>>>> Using config file "./xm_fbsd.hvm".
>>>> Started domain FreeBSD60_01
>>>>
>>>>
>>>> It starts (apparently) my fbsd domU:
>>>>
>>>> # xm list
>>>> Name                      ID   Mem VCPUs      State   Time(s)
>>>> Domain-0                   0   125     4     r-----    168.5
>>>> FreeBSD60_01              18   256     1     ------      0.0
>>>>
>>>> nothing happens, nothing really starts. It will do the same, if I remove
>>>> all entries abount disks ... I don't know where to look for errors, for
>>>> xend.log doesn't really tell me anything interesting.
>>> Does the CPU time go up?
>>>
>>>> I have tried both sdl=1 and vnc=1, but no console access.
>>> The SDL needs there to be an accessible X server (e.g. via SSH
>>> forwarding, or you're running from a terminal on the local X server).  Do
>>> you have this?
>>>
>>> Have you tried connecting a VNC viewer manually to port 5900 +
>>> vncdisplay?
>>>
>>> Are you running 64-bit Xen on the host?
>>>
>>> Cheers,
>>> Mark
>>>
>>>> Long output from xm list:
>>>>
>>>> # xm list --long
>>>> (domain
>>>>     (domid 0)
>>>>     (on_crash restart)
>>>>     (memory 125)
>>>>     (uuid 00000000-0000-0000-0000-000000000000)
>>>>     (bootloader_args )
>>>>     (name Domain-0)
>>>>     (maxmem 125)
>>>>     (on_reboot restart)
>>>>     (on_poweroff destroy)
>>>>     (vcpus 4)
>>>>     (bootloader )
>>>>     (shadow_memory 0)
>>>>     (cpu_weight 256)
>>>>     (cpu_cap 0)
>>>>     (features )
>>>>     (on_xend_start ignore)
>>>>     (on_xend_stop ignore)
>>>>     (cpu_time 171.188784501)
>>>>     (online_vcpus 4)
>>>>     (status 2)
>>>>     (memory_dynamic_min 125)
>>>>     (memory_dynamic_max 0)
>>>>     (state r-----)
>>>> )
>>>> (domain
>>>>     (domid 19)
>>>>     (on_crash destroy)
>>>>     (memory 256)
>>>>     (uuid 64b0c736-4736-a29b-3425-21f90f137eae)
>>>>     (bootloader_args )
>>>>     (name FreeBSD60_01)
>>>>     (maxmem 264)
>>>>     (on_reboot destroy)
>>>>     (on_poweroff destroy)
>>>>     (localtime 0)
>>>>     (vcpus 1)
>>>>     (bootloader )
>>>>     (shadow_memory 8)
>>>>     (cpu_weight 256)
>>>>     (cpu_cap 0)
>>>>     (features )
>>>>     (on_xend_start ignore)
>>>>     (on_xend_stop ignore)
>>>>     (start_time 1172570145.59)
>>>>     (cpu_time 6.4349e-05)
>>>>     (online_vcpus 1)
>>>>     (image
>>>>         (hvm
>>>>             (kernel /usr/lib/xen/boot/hvmloader)
>>>>             (nographic 0)
>>>>             (vnc 0)
>>>>             (sdl 1)
>>>>             (vncunused 1)
>>>>             (device_model /usr/lib/xen/bin/qemu-dm)
>>>>             (xauthority /root/.Xauthority)
>>>>             (vncconsole 1)
>>>>             (pae 1)
>>>>             (apic 1)
>>>>             (acpi 1)
>>>>             (boot d)
>>>>             (isa 0)
>>>>             (localtime 0)
>>>>             (serial pty)
>>>>             (usb 0)
>>>>             (vcpus 1)
>>>>         )
>>>>     )
>>>>     (status 2)
>>>>     (memory_dynamic_min 256)
>>>>     (memory_dynamic_max 264)
>>>>     (state ------)
>>>>     (store_mfn 65534)
>>>>     (device
>>>>         (vif
>>>>             (bridge xenbr0)
>>>>             (uuid 10950eec-5eb7-94a8-b297-faa18264460d)
>>>>             (script vif-bridge)
>>>>             (mac 00:16:3e:00:dd:c1)
>>>>             (type ioemu)
>>>>             (backend 0)
>>>>         )
>>>>     )
>>>>     (device
>>>>         (vbd
>>>>             (uname file:/xenvm/fbsd/freebsd_xen_INSTALL.img)
>>>>             (uuid 9f100ba5-4cae-0c05-7d76-09c9c4a24c4d)
>>>>             (mode w)
>>>>             (dev hda:disk)
>>>>             (backend 0)
>>>>         )
>>>>     )
>>>>     (device
>>>>         (vbd
>>>>             (uname phy:/dev/cdrom)
>>>>             (uuid 71c65447-84b2-8168-fdf4-8e4f3d795adc)
>>>>             (mode r)
>>>>             (dev hdc:cdrom)
>>>>             (backend 0)
>>>>         )
>>>>     )
>>>> )
>>>>
>>>>
>>>> Thanks in advance,
>>>> regards,
>>>> Sergi
>>>>
>>>> _______________________________________________
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>>>> http://lists.xensource.com/xen-users
>> _______________________________________________
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> 


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