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

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

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

It works for me... Are you sure you haven't borked your config?

Using 'sdX' or 'hdX' as the device to import a virtual disk as is rather
bad form these days anyhow. The preferred device is "xvdX".  e.g.
"xvda1"

Please can you try this (rememmer to update you root= and guest
/etc/fstab as well as the disk= stanza).

[You could try sda1 instead of hda1 too. If that still doesn't work,
have you tried importing a single device rather than two?]

Ian
 
> 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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