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RE: [Xen-devel] domU won't recognise my block devices

No initrd. AoE is only used by dom0. Boot messages follow:

Using config file "mail2".
Started domain mail2
Linux version (root@xxxxxxxxxxxxxxxxxxxx) (gcc version
4.0.2 (Debian 4.0.2-2)) #1 SMP Wed Nov 30 19:24:27 EST 2005
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:  root=/dev/hda1 ro  4 VMID=2
Initializing CPU#0
PID hash table entries: 1024 (order: 10, 16384 bytes)
Xen reported: 498.679 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 34000000
Memory: 125244k/139264k available (2228k kernel code, 5472k reserved,
891k data, 192k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode...
Security Framework v1.0.0 initialized
SELinux:  Disabled at boot.
Capability LSM initialized
Mount-cache hash table entries: 512
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 512K
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... disabled
Brought up 1 CPUs
NET: Registered protocol family 16
Enabling SMP...
Initializing CPU#1
Brought up 2 CPUs
ACPI: Subsystem revision 20050309
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
xen_mem: Initialising balloon driver.
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a
PCI: System does not support PCI
PCI: System does not support PCI
Grant table initialized
IA-32 Microcode Update Driver: v1.14-xen <tigran@xxxxxxxxxxx>
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
devfs: 2004-01-31 Richard Gooch (rgooch@xxxxxxxxxxxxx)
devfs: boot_options: 0x0
Initializing Cryptographic API
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
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.
Registering block device major 3
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with
ide-floppy driver 0.99.newide
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 2
IP: routing cache hash table of 1024 buckets, 8Kbytes
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)
NET: Registered protocol family 8
NET: Registered protocol family 20
VFS: Cannot open root device "hda1" or unknown-block(3,1)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on

> -----Original Message-----
> From: Ian Pratt [mailto:m+Ian.Pratt@xxxxxxxxxxxx]
> Sent: Thursday, 1 December 2005 12:35
> To: James Harper; Xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: ian.pratt@xxxxxxxxxxxx
> Subject: RE: [Xen-devel] domU won't recognise my block devices
>  > With the following in my config file:
> >
> > disk = [ 'phy:vg00/mail2-root,hda1,w', 'phy:vg00/mail2-swap,hda2,w'
> >
> > root = "/dev/hda1 ro"
> >
> > My domU says:
> >
> > VFS: Cannot open root device "hda1" or unknown-block(3,1)
> >
> > I am using a -xen kernel (not xen0 or xenU) with the
> > as-shipped config with the exception that I have AoE compiled
> > as a module.
> >
> > Any suggestions?
> Please can you post the full boot messages from the domU. Is the AoE
> module loaded (e.g. by an initrd?)
> Ian

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