Re: [Xen-users] Installing a Debian Etch DomU using debootstrap

[Daniel Heemann <daniel.heemann@xxxxxx>]

On Sun June 22 2008, Thomas wrote:
> Here is what gets printed out when using the "xm create -c
> VM1-2.6.18-6" command:
>
> Linux version 2.6.18-6-xen-686 (Debian 2.6.18.dfsg.1-18etch1)
> (waldi@xxxxxxxxxx) (gcc version 4.1.2 20061115 (prerelease) (Debian
> 4.1.1-21)) #1 SMP Sun Feb 10 22:43:13 UTC 2008
> BIOS-provided physical RAM map:
>  Xen: 0000000000000000 - 0000000010800000 (usable)
> 0MB HIGHMEM available.
> 264MB LOWMEM available.
> ACPI in unprivileged domain disabled
> Built 1 zonelists.  Total pages: 67584
> Kernel command line: root=/dev/hda1 console=hvc0 xencons=hvc0
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Initializing CPU#0
> PID hash table entries: 2048 (order: 11, 8192 bytes)
> Xen reported: 2999.962 MHz processor.
> Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
> Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
> Software IO TLB disabled
> vmalloc area: d1000000-f51fe000, maxmem 2d7fe000
> Memory: 255744k/270336k available (1580k kernel code, 6052k reserved,
> 588k data, 148k init, 0k highmem)
> Checking if this processor honours the WP bit even in supervisor mode...
> Ok. Calibrating delay using timer specific routine.. 7503.68 BogoMIPS
> (lpj=15007366) Security Framework v1.0.0 initialized
> SELinux:  Disabled at boot.
> Capability LSM initialized
> 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
> migration_cost=0
> Grant table initialized
> NET: Registered protocol family 16
> Brought up 1 CPUs
> 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.
> PCI: System does not support PCI
> PCI: System does not support PCI
> NET: Registered protocol family 2
> IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
> TCP established hash table entries: 16384 (order: 5, 131072 bytes)
> TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
> TCP: Hash tables configured (established 16384 bind 8192)
> TCP reno registered
> audit: initializing netlink socket (disabled)
> audit(1214153774.523:1): 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)
> RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
> Xen virtual console successfully installed as tty1
> Event-channel device installed.
> netfront: Initialising virtual ethernet 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
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> NET: Registered protocol family 8
> NET: Registered protocol family 20
> Using IPI No-Shortcut mode
> netfront: device eth0 has copying receive path.
> Registering block device major 3
> XENBUS: Device with no driver: device/console/0
> No filesystem could mount root, tried:  cramfs
> Kernel panic - not syncing: VFS: Unable to mount root fs on
> unknown-block(3,1) ------

It seems your domU kernel does not recognize the xen vbd - you should get 
something like
xen-vbd: registered block device major 3

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