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

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

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

Using config file "mail2".
Started domain mail2
Linux version 2.6.12.6-xen (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...
Ok.
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
report
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
idebus=xx
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
unknown-block(3,1)


> -----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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