[Xen-users] 32bit guest in latest Xen

[Lorin <lorins@xxxxxxxxx>]

Hello!

I'm sort of new to Xen but took some time to read around forums, wikis and
official documentation. I'm experiencing
some problems with the latest Xen version 3.1. The whole thing I'm currently
working is supposed to support some old OS-es on newer
hardware, ofc by using virtualization.

* first ( i think it's related with the bootloader )
- dom0 is 64bit / k 2.6
- domU is 32bit/ k 2.4

I'm creating the image using:
#xen-create-image --hostname=vm2.bla.com --size=2G --swap=256
--ide --ip=10.1.27.202 --netmask= 255.255.224.0 --gateway=10.1.0.254--dir=/dat
a/xen-vms --memory=256Mb --arch=i386
--kernel=/boot/xen-guests-kernels/vmlinuz-2
.4.26-1-686-smp --initrd=/boot/xen-guests-kernels/initrd.img-
2.4.26-1-686-smp --
copy=/data/tmp/somesytemimage/ --passwd

# xm create /etc/xen/vm2.bla.com.cfg
Using config file "/etc/xen/vm2.bla.cfg".
Error: (2, 'Invalid kernel', 'xc_dom_find_loader: no loader found\n')

In xend.log I get:

[2007-07-25 13:13:42 3152] DEBUG (__init__:1072)
XendDomainInfo.constructDomain
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) Balloon: 557796 KiB free;
need 2048; done.
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) Adding Domain: 18
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) XendDomainInfo.initDomain:
18 256
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072)
_initDomain:shadow_memory=0x0, memory_static_max=0x10000000,
memory_static_min=0x0.
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) Balloon: 557788 KiB free;
need 262144; done.
[2007-07-25 13:13:42 3152] INFO (__init__:1072) buildDomain os=linux dom=18
vcpus=1
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) domid = 18
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) memsize = 256
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) image = /boot/vmlinuz-
2.4.26-1-686-smp
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) store_evtchn = 1
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) console_evtchn = 2
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) cmdline = root=/dev/hda1 ro
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) ramdisk = /boot/initrd.img-
2.4.26-1-686-smp
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) vcpus = 1
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) features =
[2007-07-25 13:13:42 3152] ERROR (__init__:1072) XendDomainInfo.initDomain :
exception occurred
Traceback (most recent call last):
File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 1517, in
_initDomain channel_details = self.image.createImage()
File "/usr/lib64/python/xen/xend/image.py", line 112, in createImage return
self.createDomain()
File "/usr/lib64/python/xen/xend/image.py", line 131, in createDomain result
= self.buildDomain()
File "/usr/lib64/python/xen/xend/image.py", line 517, in buildDomain return
LinuxImageHandler.buildDomain(self)
File "/usr/lib64/python/xen/xend/image.py", line 215, in buildDomain
features = self.vm.getFeatures())
Error: (2, 'Invalid kernel', 'xc_dom_find_loader: no loader found\n')
[2007-07-25 13:13:42 3152] ERROR (__init__:1072) VM start failed
Traceback (most recent call last):
File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 396, in start
XendTask.log_progress(31, 60, self._initDomain)
File "/usr/lib64/python/xen/xend/XendTask.py", line 209, in log_progress
retval = func(*args, **kwds)
File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 1543, in
_initDomain raise VmError(str(exn))
VmError: (2, 'Invalid kernel', 'xc_dom_find_loader: no loader found\n')
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) XendDomainInfo.destroy:
domid=18
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072)
XendDomainInfo.destroyDomain(18)
[2007-07-25 13:13:42 3152] ERROR (__init__:1072) Domain construction failed
Traceback (most recent call last):
File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 81, in create
vm.start()
File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 396, in start
XendTask.log_progress(31, 60, self._initDomain)
File "/usr/lib64/python/xen/xend/XendTask.py", line 209, in log_progress
retval = func(*args, **kwds)
File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 1543, in
_initDomain raise VmError(str(exn))
VmError: (2, 'Invalid kernel', 'xc_dom_find_loader: no loader found\n')
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072) XendDomainInfo.destroy:
domid=None
[2007-07-25 13:13:42 3152] DEBUG (__init__:1072)
XendDomainInfo.destroyDomain(None)

vm2.bla.com  cfg is:
kernel = '/boot/vmlinuz-2.4.26-1-686-smp'
ramdisk = '/boot/initrd.img-2.4.26-1-686-smp'
memory = '256'
root = '/dev/hda1 ro'
disk = [ 'file:/data/xen-vms/domains/cagemove1-
vm2.auctionwatch.com/disk.img,hda1,w',
'file:/data/xen-vms/domains/cagemove1-vm2.auctionwatch.com/swap.img,hda2,w '
]
name = 'vm2.bla.com'

vif = [ 'ip=10.1.27.202' ]
on_poweroff = 'destroy'
on_reboot = 'restart'
on_crash = 'restart'

* second problem is related to networking - each time i start network-bridge
dom0 losses all it's networking. As far as I've managed to track so far
the peth0 doesn't get setup-ed correctly. I need to dig deeper on this
one but wondering if someone
having a similar setup managed to find out a solution.

I'm using Debian Etch 64bit running on a IBM x3550 machine ( quad xeon,4G
RAM, VT support ) and the binary 3.1 package from xensource

Thanks!

--
+ Lorin

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