Re: [Xen-users] XEN 3.4.2 /proc/xen/balloon doesn't exist and grub2 trouble

[Gabor Szilagyi <szilagyi@xxxxxxxxxxxx>]

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Pasi Kärkkäinen wrote:
> On Fri, Jan 15, 2010 at 02:50:33PM -0500, Gabor Szilagyi wrote:
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>> I am new to XEN. Try to move from vmware and Virtualbox (I use both now).
>>
>> Unfortunately, Debian Squeeze no longer support xen (out of the box no dom0)
>>
> 
> Afaik Debian guys are working on it.. dom0 kernel should appear before 
> Squeeze.

Hi Pasi,

Thanks for the comments.

That would be great...


> 
>> So I am trying to make it myself.
>>
>> I have installed xen 3.4.2 from source, did make world and installed.
>>
>> Got the kernel source from from the git repository with the xen patches
>> following the xen wiki.... compiled dom0 kernel just fine.
>>
> 
> So you're using pv_ops dom0 kernel?

Yes I am pretty sure.. I can boot it on the bare hardware not problem

> 
>> I can boot xen, with grup (old something went odd with grub2 for me) and
>> then it boots my dom0 kernel fine.
>>
> 
> For GRUB2 see:
> http://wiki.xensource.com/xenwiki/XenCommonProblems

Well, I have looked at this and went a head re-install Debian Squeeze
with grub2 ...

Now, I can not even boot xen-3.4.2.gz which I built again from source....

I tried the debian package (squeeze has 3.4.2 as well) I can not boot
even the hypervisor (and can not downgrade grub2 to the old grub)...

I can see that booting xen with the new grub gives a lot of people grief.

I tried all the suggestions like dummy=dummy, double the file name on
booth multiboot and module lines I also compiled the command line into
the dom0 kernel (the 2.6.31.6 from the Jeremy tree). I know that command
line is OK since I can boot it again on the bare hardware no problem....

I am not sure what  I am doing wrong

> 
>> Here I got stuck trying to create a hvm instance for installation of OS.
>>
>> root@rasnew:/etc/xen# xm create -c /etc/xen/test1.cfg
>> Using config file "/etc/xen/test1.cfg".
>> Error: [Errno 2] No such file or directory: '/proc/xen/balloon'
>>
> 
> Did you mount /proc/xen ? You need to have xenfs mounted.

No, /proc/xen was there (see my earlier post) except the
/proc/xen/ballon file was not there (five others were there)

> 
> See:
> http://wiki.xensource.com/xenwiki/XenParavirtOps

I can probably recite this already nothing there solved my problem. I
really like to know if anyone can actually boot the hypervisor built
from source with kernel on Debian Squeeze with grub2 .... the kernel
included in the source 2.6.18 doesn't support my ethernet card and
pretty old even udev is too old for some stuff (OK I can run everything
in domU if I ever can create one :-))

I am not new to linux (started 1997) this maybe the first project I will
have to give up on ... virtbox and vmware just worked but I would prefer

> 
> For more information about mounting /proc/xen.



> 
> -- Pasi
> 

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