# xm create centos.4-4.xen.cfg -c
Using config file "centos.4-4.xen.cfg".
Started domain centos.4-4
Linux version 2.6.16.13-4-xen (geeko@buildhost) (gcc version 4.1.0 (SUSE Linux)) #1 SMP Wed May 3 04:53:23 UTC 2006
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000008000000 (usable)
0MB HIGHMEM available.
136MB LOWMEM available.
ACPI in unprivileged domain disabled
IRQ lockup detection disabled
Built 1 zonelists
Kernel command line:  ip=:::::eth0:dhcp root=/dev/xvda1 ro
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 1024 (order: 10, 16384 bytes)
Xen reported: 1600.055 MHz processor.
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Software IO TLB disabled
vmalloc area: c9000000-fb7fe000, maxmem 33ffe000
Memory: 125152k/139264k available (1915k kernel code, 5756k reserved, 651k data, 176k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 4001.66 BogoMIPS (lpj=8003331)
Security Framework v1.0.0 initialized
Mount-cache hash table entries: 512
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 128K (64 bytes/line)
Checking 'hlt' instruction... OK.
Brought up 1 CPUs
migration_cost=0
Grant table initialized
NET: Registered protocol family 16
Brought up 1 CPUs
PCI: setting up Xen PCI frontend stub
ACPI: Subsystem revision 20060127
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
PCI: System does not support PCI
PCI: System does not support PCI
TC classifier action (bugs to netdev@vger.kernel.org cc hadi@cyberus.ca)
audit: initializing netlink socket (disabled)
audit(1164773607.999:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
rtc: IRQ 8 is not free.
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.
Floppy drive(s): fd0 is unknown type 15 (usb?), fd1 is unknown type 15 (usb?)
Failed to obtain physical IRQ 6
floppy0: no floppy controllers found
RAMDISK driver initialized: 16 RAM disks of 64000K size 1024 blocksize
Xen virtual console successfully installed as tty1
Event-channel device installed.
mice: PS/2 mouse device common for all mice
input: PC Speaker as /class/input/input0
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: 2048 (order: 1, 8192 bytes)
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP reno registered
NET: Registered protocol family 1
Using IPI No-Shortcut mode
XENBUS: Timeout connecting to devices!
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
VFS: Cannot open root device "xvda1" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)