[Xen-users] Xen 3.0 - RHEL4u3 guest domain freezes at boot "Warning: unable to open an initial console."

[Arindam <arindam.mukerjee@xxxxxxxxx>]

I am trying to run RHEL4 update 3 in a Xen unprivileged domain. I am using a Dell PowerEdge 2850 server with a single Intel Xeon 2.8 GHz cpu - with 128 megs RAM (cat /proc/meminfo | grep MemTotal). I installed Xen 3.0 on RHEL4 u3 on /dev/sda (33 GB /, 2 GB swap) and then installed RHEL4 u3 again on /dev/sdb (33 GB /, 2 GB swap). I am trying to run the installation on /dev/sdb as an unprivileged domain. The problem I am facing is that the boot of the unprivileged domain freezes saying "Warning: unable to open an initial console.". This happens even when I am not running any other guest Domains:

I also have disk dumps of a FC5 installation and its swap space which I have managed to boot into using the following configuration file:

kernel = "/boot/vmlinuz-2.6-xenU"
memory = 256
name = "fedora.fc5"
vcpus = 2
vif = [ '' ]
#dhcp = "dhcp"
disk = ['file:/root/fedora/fedora.fc5.img,sda1,w', 'file:/root/fedora/fedora.swap,sda2,w']
root = "/dev/sda1 ro"

I am using the following configuration file for the RHEL4 u3 installation on /dev/sdb:

kernel = "/boot/vmlinuz-2.6.16-xenU"
memory = 512
name = "rhel4_u3"
vcpus = 1
vif = [ '' ]
hostname = "dblxvmrh02"
#dhcp = "dhcp"
disk = ['phy:sdb1,sda1,w', 'phy:sdb2,sda2,w']
root = "/dev/sda1 ro"
extra = "3"

Finally, my /boot/grub/grub.conf looks like:

default=0
timeout=5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
#hiddenmenu
title Xen 3.0 / XenLinux 2.6
        root (hd0,0)
        kernel /boot/xen.gz dom0_mem=128M
        module /boot/vmlinuz- 2.6-xen0 ro root=LABEL=/1 console=tty0
        module /boot/initrd-2.6.16-xen0.img
        module /boot/initrd-2.6.9-34.ELsmp.img
title Red Hat Enterprise Linux AS (2.6.9-34.ELsmp)
        root (hd0,0)
        kernel /boot/vmlinuz- 2.6.9-34.ELsmp ro root=LABEL=/1 rhgb quiet
        initrd /boot/initrd-2.6.9-34.ELsmp.img
title Red Hat Enterprise Linux AS (2.6.9-34.EL)
        root (hd0,0)
        kernel /boot/vmlinuz-2.6.9-34.EL ro root=LABEL=/1 rhgb quiet
        initrd /boot/initrd-2.6.9-34.EL.img

Please help me out.

Cheers,
Andy

-------------

Here is the screen dump:

[root@dblxxeon06 ~]# xm create -c ./xen_rhel4_u3.cfg
Using config file "./xen_rhel4_u3.cfg".
Started domain rhel4_u3
Bootdata ok (command line is  root=/dev/sda1 ro 3)
Linux version 2.6.16-xenU ( root@xxxxxxxxxxxxxxxxxxxxxxx) (gcc version 3.4.5 20051201 (Red Hat 3.4.5-2)) #1 SMP Tue Jul 11 17:51:45 IST 2006
Built 1 zonelists
Kernel command line:  root=/dev/sda1 ro 3
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 131072 bytes)
Xen reported: 2792.998 MHz processor.
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Software IO TLB disabled
Memory: 509308k/532480k available (1881k kernel code, 22528k reserved, 652k data, 116k init)
Calibrating delay using timer specific routine.. 5588.71 BogoMIPS (lpj=27943557)
Mount-cache hash table entries: 256
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
CPU: Physical Processor ID: 3
Brought up 1 CPUs
migration_cost=0
DMI not present or invalid.
Grant table initialized
NET: Registered protocol family 16
Initializing CPU#1
migration_cost=1301
migration_cost=1301
Initializing CPU#2
migration_cost=1301Initializing CPU#3

Brought up 4 CPUs
xen_mem: Initialising balloon driver.
IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $
audit: initializing netlink socket (disabled)
audit(1152807769.342:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
i8042.c: No controller found.
isa bounce pool size: 16 pages
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
Xen virtual console successfully installed as tty1
Event-channel device installed.
netfront: Initialising virtual ethernet driver.
Registering block device major 8
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 6, 262144 bytes)
TCP established hash table entries: 131072 (order: 9, 2097152 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Warning: unable to open an initial console.

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