XEN Problem with root device

[Claus Reheis]

Hi all!

At first I have to admit that I am very inexperienced in using XEN!
What I try to do is get OpenSuse 10.2 working on my FC6 Station.
To do that I did the following steps:

1)Installed the XEN Kernel: 2.6.19-1.2911.fc6xen

2)Installed OpenSuse 10.2 on my girlfriends Laptop

3)made a complete image of the installation and put it in my home:

/home/user/opensuse102xen.img

4)created an suse.xen.cfg:

kernel = "/boot/vmlinuz-2.6.19-1.2895.fc6xen"
memory = 512
name = "opensuse102"
vif = ['']
#nics = 1
#dhcp = "dhcp"
disk = disk = ['file:/home/rehcla/opensuse102xen.img,xvda,w'] 
root = "/dev/xvda ro"

5)did edit the /etc/fstab in the Image:


/dev/xvda            /                    ext3       acl,user_xattr
1 1
#/dev/hda1            /windows/C           ntfs
ro,users,gid=users,umask=0002,nls=utf8 0 0
#/dev/hda2            swap                 swap       defaults
0 0
proc                 /proc                proc       defaults
0 0
sysfs                /sys                 sysfs      noauto
0 0
debugfs              /sys/kernel/debug    debugfs    noauto
0 0
usbfs                /proc/bus/usb        usbfs      noauto
0 0
devpts               /dev/pts             devpts     mode=0620,gid=5
0 0


When I try to start Xen with:

"xm create opensuse102  -c suse.xen.cfg"

I get this:


Using config file "./suse.xen.cfg".
Started domain opensuse102
Linux version 2.6.19-1.2895.fc6xen
(brewbuilder(a)hs20-bc2-2.build.redhat.com) (gcc version 4.1.1 20070105
(Red Hat 4.1.1-51)) #1 SMP Wed Jan 10 19:47:12 EST 2007
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000020800000 (usable)
0MB HIGHMEM available.
520MB LOWMEM available.
NX (Execute Disable) protection: active
Zone PFN ranges:
  DMA             0 ->   133120
  Normal     133120 ->   133120
  HighMem    133120 ->   133120
early_node_map[1] active PFN ranges
    0:        0 ->   133120
ACPI in unprivileged domain disabled
Built 1 zonelists.  Total pages: 132080
Kernel command line:  root=/dev/xvda ro
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
CPU 0 irqstacks, hard=c07e0000 soft=c07c0000
PID hash table entries: 4096 (order: 12, 16384 bytes)
Xen reported: 3391.494 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Software IO TLB disabled
vmalloc area: e1000000-f4ffe000, maxmem 2d7fe000
Memory: 512768k/532480k available (2166k kernel code, 11200k reserved,
1100k data, 184k init, 0k highmem)
virtual kernel memory layout:
    fixmap  : 0xf5315000 - 0xf57fe000   (5028 kB)
    pkmap   : 0xf5000000 - 0xf5200000   (2048 kB)
    vmalloc : 0xe1000000 - 0xf4ffe000   ( 319 MB)
    lowmem  : 0xc0000000 - 0xe0800000   ( 520 MB)
      .init : 0xc078e000 - 0xc07bc000   ( 184 kB)
      .data : 0xc061da2c - 0xc0730bf4   (1100 kB)
      .text : 0xc0400000 - 0xc061da2c   (2166 kB)
Checking if this processor honours the WP bit even in supervisor mode...
Ok.
Calibrating delay using timer specific routine.. 8489.82 BogoMIPS
(lpj=16979653)
Security Framework v1.0.0 initialized
SELinux:  Initializing.
SELinux:  Starting in permissive mode
selinux_register_security:  Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 512
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 2048K
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 12k freed
Brought up 1 CPUs
Grant table initialized
NET: Registered protocol family 16
Brought up 1 CPUs
PCI: Fatal: No config space access function found
PCI: setting up Xen PCI frontend stub
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
PCI: System does not support PCI
PCI: System does not support PCI
NetLabel: Initializing
NetLabel:  domain hash size = 128
NetLabel:  protocols = UNLABELED CIPSOv4
NetLabel:  unlabeled traffic allowed by default
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 9, 2621440 bytes)
TCP bind hash table entries: 65536 (order: 8, 1310720 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com&gt;
audit: initializing netlink socket (disabled)
audit(1172096781.555:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
SELinux:  Registering netfilter hooks
ksign: Installing public key data
Loading keyring
- Added public key A803A00FB8A89D68
- User ID: Red Hat, Inc. (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
Xen virtual console successfully installed as xvc0
Linux version 2.6.19-1.2895.fc6xen
(brewbuilder(a)hs20-bc2-2.build.redhat.com) (gcc version 4.1.1 20070105
(Red Hat 4.1.1-51)) #1 SMP Wed Jan 10 19:47:12 EST 2007
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000020800000 (usable)
0MB HIGHMEM available.
520MB LOWMEM available.
NX (Execute Disable) protection: active
Zone PFN ranges:
  DMA             0 ->   133120
  Normal     133120 ->   133120
  HighMem    133120 ->   133120
early_node_map[1] active PFN ranges
    0:        0 ->   133120
ACPI in unprivileged domain disabled
Built 1 zonelists.  Total pages: 132080
Kernel command line:  root=/dev/xvda ro
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
CPU 0 irqstacks, hard=c07e0000 soft=c07c0000
PID hash table entries: 4096 (order: 12, 16384 bytes)
Xen reported: 3391.494 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Software IO TLB disabled
vmalloc area: e1000000-f4ffe000, maxmem 2d7fe000
Memory: 512768k/532480k available (2166k kernel code, 11200k reserved,
1100k data, 184k init, 0k highmem)
virtual kernel memory layout:
    fixmap  : 0xf5315000 - 0xf57fe000   (5028 kB)
    pkmap   : 0xf5000000 - 0xf5200000   (2048 kB)
    vmalloc : 0xe1000000 - 0xf4ffe000   ( 319 MB)
    lowmem  : 0xc0000000 - 0xe0800000   ( 520 MB)
      .init : 0xc078e000 - 0xc07bc000   ( 184 kB)
      .data : 0xc061da2c - 0xc0730bf4   (1100 kB)
      .text : 0xc0400000 - 0xc061da2c   (2166 kB)
Checking if this processor honours the WP bit even in supervisor mode...
Ok.
Calibrating delay using timer specific routine.. 8489.82 BogoMIPS
(lpj=16979653)
Security Framework v1.0.0 initialized
SELinux:  Initializing.
SELinux:  Starting in permissive mode
selinux_register_security:  Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 512
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 2048K
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 12k freed
Brought up 1 CPUs
Grant table initialized
NET: Registered protocol family 16
Brought up 1 CPUs
PCI: Fatal: No config space access function found
PCI: setting up Xen PCI frontend stub
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
PCI: System does not support PCI
PCI: System does not support PCI
NetLabel: Initializing
NetLabel:  domain hash size = 128
NetLabel:  protocols = UNLABELED CIPSOv4
NetLabel:  unlabeled traffic allowed by default
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 9, 2621440 bytes)
TCP bind hash table entries: 65536 (order: 8, 1310720 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com&gt;
audit: initializing netlink socket (disabled)
audit(1172096781.555:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
SELinux:  Registering netfilter hooks
ksign: Installing public key data
Loading keyring
- Added public key A803A00FB8A89D68
- User ID: Red Hat, Inc. (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
Xen virtual console successfully installed as xvc0
Event-channel device installed.
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with
idebus=xx
ide-floppy driver 0.99.newide
usbcore: registered new interface driver libusual
usbcore: registered new interface driver hiddev
usbcore: registered new interface driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.
mice: PS/2 mouse device common for all mice
TCP bic registered
Initializing XFRM netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
Using IPI No-Shortcut mode
XENBUS: Device with no driver: device/vbd/51712
XENBUS: Device with no driver: device/vif/0
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
VFS: Cannot open root device "xvda" 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)


Can some help me?

Thanks!

Claus Reheis

[Sadique Puthen]

You need to create an initrd image with  --with=xennet --preload=xenblk 
options and specify that using "ramdisk = <path to initrd>" in the 
configuration file for guest.

Claus Reheis wrote:
>  Hi all!
>
>  At first I have to admit that I am very inexperienced in using XEN!
>  What I try to do is get OpenSuse 10.2 working on my FC6 Station.
>  To do that I did the following steps:
>
>  1)Installed the XEN Kernel: 2.6.19-1.2911.fc6xen
>
>  2)Installed OpenSuse 10.2 on my girlfriends Laptop
>
>  3)made a complete image of the installation and put it in my home:
>
>  /home/user/opensuse102xen.img
>
>  4)created an suse.xen.cfg:
>
>  kernel = "/boot/vmlinuz-2.6.19-1.2895.fc6xen"
>  memory = 512
>  name = "opensuse102"
>  vif = ['']
>  #nics = 1
>  #dhcp = "dhcp"
>  disk = disk = ['file:/home/rehcla/opensuse102xen.img,xvda,w'] 
>  root = "/dev/xvda ro"
>
>  5)did edit the /etc/fstab in the Image:
>
>
>  /dev/xvda            /                    ext3       acl,user_xattr
>  1 1
>  #/dev/hda1            /windows/C           ntfs
>  ro,users,gid=users,umask=0002,nls=utf8 0 0
>  #/dev/hda2            swap                 swap       defaults
>  0 0
>  proc                 /proc                proc       defaults
>  0 0
>  sysfs                /sys                 sysfs      noauto
>  0 0
>  debugfs              /sys/kernel/debug    debugfs    noauto
>  0 0
>  usbfs                /proc/bus/usb        usbfs      noauto
>  0 0
>  devpts               /dev/pts             devpts     mode=0620,gid=5
>  0 0
>
>
>  When I try to start Xen with:
>
>  "xm create opensuse102  -c suse.xen.cfg"
>
>  I get this:
>
>
>  Using config file "./suse.xen.cfg".
>  Started domain opensuse102
>  Linux version 2.6.19-1.2895.fc6xen
>  (brewbuilder(a)hs20-bc2-2.build.redhat.com) (gcc version 4.1.1 20070105
>  (Red Hat 4.1.1-51)) #1 SMP Wed Jan 10 19:47:12 EST 2007
>  BIOS-provided physical RAM map:
>  Xen: 0000000000000000 - 0000000020800000 (usable)
>  0MB HIGHMEM available.
>  520MB LOWMEM available.
>  NX (Execute Disable) protection: active
>  Zone PFN ranges:
>    DMA             0 ->   133120
>    Normal     133120 ->   133120
>    HighMem    133120 ->   133120
>  early_node_map[1] active PFN ranges
>      0:        0 ->   133120
>  ACPI in unprivileged domain disabled
>  Built 1 zonelists.  Total pages: 132080
>  Kernel command line:  root=/dev/xvda ro
>  Enabling fast FPU save and restore... done.
>  Enabling unmasked SIMD FPU exception support... done.
>  Initializing CPU#0
>  CPU 0 irqstacks, hard=c07e0000 soft=c07c0000
>  PID hash table entries: 4096 (order: 12, 16384 bytes)
>  Xen reported: 3391.494 MHz processor.
>  Console: colour dummy device 80x25
>  Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
>  Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
>  Software IO TLB disabled
>  vmalloc area: e1000000-f4ffe000, maxmem 2d7fe000
>  Memory: 512768k/532480k available (2166k kernel code, 11200k reserved,
>  1100k data, 184k init, 0k highmem)
>  virtual kernel memory layout:
>      fixmap  : 0xf5315000 - 0xf57fe000   (5028 kB)
>      pkmap   : 0xf5000000 - 0xf5200000   (2048 kB)
>      vmalloc : 0xe1000000 - 0xf4ffe000   ( 319 MB)
>      lowmem  : 0xc0000000 - 0xe0800000   ( 520 MB)
>        .init : 0xc078e000 - 0xc07bc000   ( 184 kB)
>        .data : 0xc061da2c - 0xc0730bf4   (1100 kB)
>        .text : 0xc0400000 - 0xc061da2c   (2166 kB)
>  Checking if this processor honours the WP bit even in supervisor mode...
>  Ok.
>  Calibrating delay using timer specific routine.. 8489.82 BogoMIPS
>  (lpj=16979653)
>  Security Framework v1.0.0 initialized
>  SELinux:  Initializing.
>  SELinux:  Starting in permissive mode
>  selinux_register_security:  Registering secondary module capability
>  Capability LSM initialized as secondary
>  Mount-cache hash table entries: 512
>  CPU: Trace cache: 12K uops, L1 D cache: 16K
>  CPU: L2 cache: 2048K
>  Checking 'hlt' instruction... OK.
>  SMP alternatives: switching to UP code
>  Freeing SMP alternatives: 12k freed
>  Brought up 1 CPUs
>  Grant table initialized
>  NET: Registered protocol family 16
>  Brought up 1 CPUs
>  PCI: Fatal: No config space access function found
>  PCI: setting up Xen PCI frontend stub
>  ACPI: Interpreter disabled.
>  Linux Plug and Play Support v0.97 (c) Adam Belay
>  pnp: PnP ACPI: disabled
>  xen_mem: Initialising balloon driver.
>  usbcore: registered new interface driver usbfs
>  usbcore: registered new interface driver hub
>  usbcore: registered new device driver usb
>  PCI: System does not support PCI
>  PCI: System does not support PCI
>  NetLabel: Initializing
>  NetLabel:  domain hash size = 128
>  NetLabel:  protocols = UNLABELED CIPSOv4
>  NetLabel:  unlabeled traffic allowed by default
>  NET: Registered protocol family 2
>  IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
>  TCP established hash table entries: 131072 (order: 9, 2621440 bytes)
>  TCP bind hash table entries: 65536 (order: 8, 1310720 bytes)
>  TCP: Hash tables configured (established 131072 bind 65536)
>  TCP reno registered
>  IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com&gt;
>  audit: initializing netlink socket (disabled)
>  audit(1172096781.555:1): initialized
>  VFS: Disk quotas dquot_6.5.1
>  Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
>  SELinux:  Registering netfilter hooks
>  ksign: Installing public key data
>  Loading keyring
>  - Added public key A803A00FB8A89D68
>  - User ID: Red Hat, Inc. (Kernel Module GPG key)
>  io scheduler noop registered
>  io scheduler anticipatory registered
>  io scheduler deadline registered
>  io scheduler cfq registered (default)
>  pci_hotplug: PCI Hot Plug PCI Core version: 0.5
>  rtc: IRQ 8 is not free.
>  Non-volatile memory driver v1.2
>  Linux agpgart interface v0.101 (c) Dave Jones
>  RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
>  Xen virtual console successfully installed as xvc0
>  Linux version 2.6.19-1.2895.fc6xen
>  (brewbuilder(a)hs20-bc2-2.build.redhat.com) (gcc version 4.1.1 20070105
>  (Red Hat 4.1.1-51)) #1 SMP Wed Jan 10 19:47:12 EST 2007
>  BIOS-provided physical RAM map:
>  Xen: 0000000000000000 - 0000000020800000 (usable)
>  0MB HIGHMEM available.
>  520MB LOWMEM available.
>  NX (Execute Disable) protection: active
>  Zone PFN ranges:
>    DMA             0 ->   133120
>    Normal     133120 ->   133120
>    HighMem    133120 ->   133120
>  early_node_map[1] active PFN ranges
>      0:        0 ->   133120
>  ACPI in unprivileged domain disabled
>  Built 1 zonelists.  Total pages: 132080
>  Kernel command line:  root=/dev/xvda ro
>  Enabling fast FPU save and restore... done.
>  Enabling unmasked SIMD FPU exception support... done.
>  Initializing CPU#0
>  CPU 0 irqstacks, hard=c07e0000 soft=c07c0000
>  PID hash table entries: 4096 (order: 12, 16384 bytes)
>  Xen reported: 3391.494 MHz processor.
>  Console: colour dummy device 80x25
>  Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
>  Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
>  Software IO TLB disabled
>  vmalloc area: e1000000-f4ffe000, maxmem 2d7fe000
>  Memory: 512768k/532480k available (2166k kernel code, 11200k reserved,
>  1100k data, 184k init, 0k highmem)
>  virtual kernel memory layout:
>      fixmap  : 0xf5315000 - 0xf57fe000   (5028 kB)
>      pkmap   : 0xf5000000 - 0xf5200000   (2048 kB)
>      vmalloc : 0xe1000000 - 0xf4ffe000   ( 319 MB)
>      lowmem  : 0xc0000000 - 0xe0800000   ( 520 MB)
>        .init : 0xc078e000 - 0xc07bc000   ( 184 kB)
>        .data : 0xc061da2c - 0xc0730bf4   (1100 kB)
>        .text : 0xc0400000 - 0xc061da2c   (2166 kB)
>  Checking if this processor honours the WP bit even in supervisor mode...
>  Ok.
>  Calibrating delay using timer specific routine.. 8489.82 BogoMIPS
>  (lpj=16979653)
>  Security Framework v1.0.0 initialized
>  SELinux:  Initializing.
>  SELinux:  Starting in permissive mode
>  selinux_register_security:  Registering secondary module capability
>  Capability LSM initialized as secondary
>  Mount-cache hash table entries: 512
>  CPU: Trace cache: 12K uops, L1 D cache: 16K
>  CPU: L2 cache: 2048K
>  Checking 'hlt' instruction... OK.
>  SMP alternatives: switching to UP code
>  Freeing SMP alternatives: 12k freed
>  Brought up 1 CPUs
>  Grant table initialized
>  NET: Registered protocol family 16
>  Brought up 1 CPUs
>  PCI: Fatal: No config space access function found
>  PCI: setting up Xen PCI frontend stub
>  ACPI: Interpreter disabled.
>  Linux Plug and Play Support v0.97 (c) Adam Belay
>  pnp: PnP ACPI: disabled
>  xen_mem: Initialising balloon driver.
>  usbcore: registered new interface driver usbfs
>  usbcore: registered new interface driver hub
>  usbcore: registered new device driver usb
>  PCI: System does not support PCI
>  PCI: System does not support PCI
>  NetLabel: Initializing
>  NetLabel:  domain hash size = 128
>  NetLabel:  protocols = UNLABELED CIPSOv4
>  NetLabel:  unlabeled traffic allowed by default
>  NET: Registered protocol family 2
>  IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
>  TCP established hash table entries: 131072 (order: 9, 2621440 bytes)
>  TCP bind hash table entries: 65536 (order: 8, 1310720 bytes)
>  TCP: Hash tables configured (established 131072 bind 65536)
>  TCP reno registered
>  IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com&gt;
>  audit: initializing netlink socket (disabled)
>  audit(1172096781.555:1): initialized
>  VFS: Disk quotas dquot_6.5.1
>  Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
>  SELinux:  Registering netfilter hooks
>  ksign: Installing public key data
>  Loading keyring
>  - Added public key A803A00FB8A89D68
>  - User ID: Red Hat, Inc. (Kernel Module GPG key)
>  io scheduler noop registered
>  io scheduler anticipatory registered
>  io scheduler deadline registered
>  io scheduler cfq registered (default)
>  pci_hotplug: PCI Hot Plug PCI Core version: 0.5
>  rtc: IRQ 8 is not free.
>  Non-volatile memory driver v1.2
>  Linux agpgart interface v0.101 (c) Dave Jones
>  RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
>  Xen virtual console successfully installed as xvc0
>  Event-channel device installed.
>  Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
>  ide: Assuming 50MHz system bus speed for PIO modes; override with
>  idebus=xx
>  ide-floppy driver 0.99.newide
>  usbcore: registered new interface driver libusual
>  usbcore: registered new interface driver hiddev
>  usbcore: registered new interface driver usbhid
>  drivers/usb/input/hid-core.c: v2.6:USB HID core driver
>  PNP: No PS/2 controller found. Probing ports directly.
>  i8042.c: No controller found.
>  mice: PS/2 mouse device common for all mice
>  TCP bic registered
>  Initializing XFRM netlink socket
>  NET: Registered protocol family 1
>  NET: Registered protocol family 17
>  Using IPI No-Shortcut mode
>  XENBUS: Device with no driver: device/vbd/51712
>  XENBUS: Device with no driver: device/vif/0
>  md: Autodetecting RAID arrays.
>  md: autorun ...
>  md: ... autorun DONE.
>  VFS: Cannot open root device "xvda" 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)
>
>
>  Can some help me?
>
>  Thanks!
>
>  Claus Reheis
>
>
>
>
>    
>  ------------------------------------------------------------------------
>
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