"sanjay kushwaha" <sanjay.kushwaha@xxxxxxxxx> wrote on 09/11/2006 03:22:57
PM:
> 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]#
Set "pae=1" in your HVM configuration file (xmexample.hvm). Not sure why
that is, but that's what I do to get my 64-bit guests to boot.
Steve D.
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