Hi Folks,
I am working with the Xen changeset 11437. I am trying to boot a RHEL
2.6.9-22.EL (non-smp) kernel into a guest VM on this dual-core 64 bit
machine (dom0 is running smp 2.6.16.13 kernel) . But the guest VM
doesn't boot. apparently it gets stuck during the kernel boot process.
I get the grub menu and when I select the specified kernel I get the
following message
Booting 'RHEL'
root (hd0,0)
Filesystem type is ext2fs, partition type 0x83
kernel /boot/vmlinuz-2.6.9-22.EL ro root=/dev/hda1 console=ttyS0,115200 console
=tty0 acpi=off noapic nolapic
[Linux-bzImage, setup=0x1400, size=0x1af739]
I don;t get any output after the above message. The boot process gets
stuck here.
I also observe that the "xm list" command shows that the guest VM is
hogging most of the CPU cycles.
[root@vt2 ksanjay]# xm lis
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 250 2 r----- 47.8
vm 1 256 1 r----- 2981.9
[root@vt2 ksanjay]#
Is anybody else experiencing this problem? Does anyone know how to fix it?
The same kernel boots fine with an older version of Xen (changeset 9379).
Thanks,
Sanjay
PS: below is the "xm info" and guest config file
[root@vt2 ksanjay]# xm info
host : vt2
release : 2.6.16.13-xen
version : #1 SMP Sun Sep 10 15:07:03 EDT 2006
machine : x86_64
nr_cpus : 2
nr_nodes : 1
sockets_per_node : 1
cores_per_socket : 2
threads_per_core : 1
cpu_mhz : 2999
hw_caps :
bfebfbff:20100800:00000000:00000180:0000e4f5:00000000:00000001
total_memory : 1011
free_memory : 457
xen_major : 3
xen_minor : 0
xen_extra : -unstable
xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p
hvm-3.0-x86_64
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : Fri Sep 8 18:46:54 2006 -0700 11437:7acaba46e15e
cc_compiler : gcc version 3.4.5 20051201 (Red Hat 3.4.5-2)
cc_compile_by : root
cc_compile_domain :
cc_compile_date : Mon Sep 11 15:08:19 EDT 2006
xend_config_format : 2
[root@vt2 ksanjay]#
[root@vt2 ksanjay]# cat xmexample.hvm
# -*- mode: python; -*-
#============================================================================
# Python configuration setup for 'xm create'.
# This script sets the parameters used when a domain is created using
'xm create'.
# You use a separate script for each domain you want to create, or
# you can set the parameters for the domain on the xm command line.
#============================================================================
import os, re
arch = os.uname()[4]
if re.search('64', arch):
arch_libdir = 'lib64'
else:
arch_libdir = 'lib'
#----------------------------------------------------------------------------
# Kernel image file.
kernel = "/usr/lib/xen/boot/hvmloader"
# The domain build function. HVM domain uses 'hvm'.
builder='hvm'
# Initial memory allocation (in megabytes) for the new domain.
#
# WARNING: Creating a domain with insufficient memory may cause out of
# memory errors. The domain needs enough memory to boot kernel
# and modules. Allocating less than 32MBs is not recommended.
memory = 256
# Shadow pagetable memory for the domain, in MB.
# Should be at least 2KB per MB of domain memory, plus a few MB per vcpu.
shadow_memory = 8
# A name for your domain. All domains must have different names.
name = "vm"
# 128-bit UUID for the domain. The default behavior is to generate a new UUID
# on each call to 'xm create'.
#uuid = "06ed00fe-1162-4fc4-b5d8-11993ee4a8b9"
#-----------------------------------------------------------------------------
# the number of cpus guest platform has, default=1
vcpus=1
# enable/disable HVM guest PAE, default=0 (disabled)
#pae=0
# enable/disable HVM guest ACPI, default=0 (disabled)
acpi=0
# enable/disable HVM guest APIC, default=0 (disabled)
apic=0
vif = [ 'type=ioemu, bridge=xenbr0' ]
disk = [ 'file:/home/ksanjay/test-2030_16_63.img,ioemu:hda,w' ]
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
sdl=0
vnc=0
nographic=0
stdvga=0
serial='pty'
[root@vt2 ksanjay]#
--
----------------------
PhD Student, Georgia Tech
http://www.cc.gatech.edu/~ksanjay/
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