Re: [Xen-users] Not possible to boot a user domain

[Ramon Acedo <ramon@xxxxxxxxxx>]

Hello, thanks Daniel for your  answer.
El mar, 16-08-2005 a las 14:57 +0100, Daniel Hulme escribió:
> >     $ PATCH_THE_KERNEL=YES make-kpkg --config=menuconfig --arch=xen
> > --revision=1 --append-to-version=myxen0 kernel_image
> 
> > 9 - I configure Grub:
> 
> > module /boot/xen-linux-2.6.11myxen0 root=/dev/md0 ro console=tty0
> 
> > 11 - I have this domain configured:
> > 
> > kernel = "/boot/vmlinuz-2.6.11.12-xenU"
> Are you sure this is what the kernel is called? If you have compiled it
> with --append-to-version the filename will probably be different,
> looking a bit like the dom0 filename you give above. The output from
> your kernel,
> > Linux version 2.6.11.12-xenU (xenod@xxxxxxxxxxxxxxxxxxxxx) (gcc
> > version 3.3.3 20040412 (Red Hat Linux 3.3.3-7)) #1 Thu Aug 4 00:48:08
> looks like you are using one of the precompiled kernels. Try using the
> kernel you compiled. If that doesn't work, try using the same kernel
> that you use for dom0. 

With the kernel I compiled I get the same results:
root@backupsid:~# xm create -c pau.conf
Using config file "/etc/xen/pau.conf".
Started domain pau, console on port 9605
************ REMOTE CONSOLE: CTRL-] TO QUIT ********
Linux version 2.6.11myxenu (root@backupsid) (gcc versión 3.3.5 (Debian
1:3.3.5-13)) #1 Thu Aug 11 22:44:39 CEST 2005
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000012c00000 (usable)
(...)

And then stops at:
IP: routing cache hash table of 2048 buckets, 16Kbytes
TCP established hash table entries: 16384 (order: 5, 131072 bytes)
TCP bind hash table entries: 16384 (order: 4, 65536 bytes


xm list doesn't list the domain, just the domain-0, If I type
quickly 'xm list' just after the 'xm create' I can see the
domain while the kernel messages are shown but it dies
afterwards.

If I use the dom0 kernel I get no kernel output just:
root@backupsid:~# xm create -c pau.conf
Using config file "/etc/xen/pau.conf".
Started domain pau, console on port 9605
************ REMOTE CONSOLE: CTRL-] TO QUIT ********

I have used different kernels, the one you comment is 
the one distributed with the sources of xen, this shows
kernel messages but behaves exactly as the one I've compiled.


> Remember that the kernel gets loaded from the
> dom0's filesystem (md0 in your case), *not* the domU's filesystem.
I know :-)
> 
> It should still work, though, and the failure mode you describe is quite
> bizarre.

Yes, but I'm not the only one, and it fails in different
computers.

Anyway, some more info, I have compiled bridge support but I
get this error:
root@backupsid:~# brctl show
bridge name     bridge id               STP enabled     interfaces
xen-br0         8000.000000000000       no               can't get port
info: Function not implemented

looks like a kernel module not loaded or a feature not
compiled but I have bridge support:
root@backupsid:~# ifconfig xen-br0
xen-br0   Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:1.2.3.4  Bcast:1.2.3.255  Mask:255.255.255.255
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:378 (378.0 b)


Thanks,

Ramon


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