Xen error:no memory allocted to domU

Xen error:no memory allocted to domU

[Hao Sun]

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Hi,
    I installed xen-unstable.hg on SLES10. I created a domU configure file 
"vm1" like below: 

disk = [ 'file:/etc/xen/images/vm1,hda,w' ]
memory = 128
vcpus = 2
builder = 'linux'
name = 'vm1'
vif = [ 'mac=00:19:3e:43:04:02' ]
localtime = 0
on_poweroff = 'destroy'
on_reboot = 'restart'
on_crash = 'restart'
extra = ' TERM=xterm'
bootloader = '/usr/lib/xen/boot/domUloader.py'
bootentry = '/dev/hda2:/boot/vmlinuz-xen,/boot/initrd-xen'

Error occured when I tried to create a domU using this configure file. 
After I inputted "xm create -c vm1", this process paussed.
I logged in system in another console and found the domU vm1's stat is "p" 
after I type in "xm list". The memory allocted to domU vm1 is zero which I 
think is 
the reason why it is paused. My dom0's memory is 1.8G. I don't know why no 
memory has been allocted to domU.

Did anyone come up with this problem? Please give me some suggestion, 
thanks!


Best Regards, Sun Hao(孙皓)
E-mail: sunhao@cn.ibm.com 


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question about reboot VM

[tgh]

hi
I try to understand the"xm reboot" for vm, but confused about the python
code
I could not find which function or code in C language is called by the
python when rebooting

could you help me
Thanks in advance

Re: question about reboot VM

[Ewan Mellor]

On Mon, Mar 26, 2007 at 02:12:33PM +0800, tgh wrote:

> hi
> I try to understand the"xm reboot" for vm, but confused about the python
> code
> I could not find which function or code in C language is called by the
> python when rebooting

At the client (xm) the code is in xen/xm/shutdown.py.  This just sends simple
messages to Xend (the server).  In Xend there is some marshalling, but
eventually the call pops out in xen/xend/XendDomainInfo.py:shutdown, with the
reason set to "reboot".  This makes a request to the domain to shut itself
down, and the shutdown the proceeds asynchronously.

When the domain finally shuts down, a watch is fired which comes into
XendDomainInfo.refreshShutdown, and Xend handles the cleanup and reboot from
there.

There is no C code explicitly about rebooting -- this is handled by Xend as a
cleanup of one domain, and creation of a new one in its place.

HTH,

Ewan.