[Xen-users] Newbie question: Unable to boot a file based VBD

["Manu Anand" <manu.anand@xxxxxxxxx>]

Hi fellas:

I am playing with xen on a centos distribution.
Here is what all I've done

1. Created a file based VBD using dd and mkfs (section 6.2 of user manual)
2. Mounted this vbd and copied root, dev, etc, usr, bin, sbin, lib dirs and contents

3. Created empty dirs for proc, sys, home and tmp
4. Modified fstab of the mounted vbd
/dev/xvda               /                       ext3    defaults        1 1
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0

sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
LABEL=SWAP-sda2         swap                    swap    defaults        0 0

5. Generated initrd 
 mkinitrd /boot/initrd-2.6.18-92.1.18.el5xen-custom-6.img 2.6.18-92.1.18.el5xen --fstab /mnt/etc/fstab --omit-scsi-modules --with xenblk --preload xennet

6. Created a config file
kernel = "/boot/vmlinuz-2.6.18-92.1.18.el5xen"
ramdisk = "/boot/initrd-2.6.18-92.1.18.el5xen-custom-6.img"
memory = 256
name = "ExampleDomain"
vif = [ '' ]

disk = [ 'file:/home/admin/vm1disk,xvda,w', ]
#disk = [ 'phy:sda1,sda10,w']
root = "/dev/xvda rw"
extra = 'selinux=0'
#dhcp="dhcp"

7. Stated the show with " sudo xm create modifiedxmconfig.cfg -c"

And the kernel hangs at the last spot


The log is attached at the end of this mail.
Here are my observations about the log
1. Lots of PCI errors: Some config space errors followed by PCI support being disabled

2. Lots of ACPI errors: Mostly about  not being able to acquire mutex. Hence ACPI support is disabled too.
3. I turned off SELinux after hearing too many stories
4.  "xvda: unknown partition table" ??
5. XENBUS: Device with no driver: device/vbd/51712 ?

Note: I have also tried with tap:aio option with root=/dev/sda10 and I still get same failure..

Any ideas about this will be eagarly lapped up :o)

Thanks
Manu

***********
sudo xm create modifiedxmconfig.cfg -c

Password:

Using config file "./modifiedxmconfig.cfg".
Started domain ExampleDomain
Bootdata ok (command line is  root=/dev/xvda rw selinux=0)
Linux version 2.6.18-92.1.18.el5xen (mockbuild@xxxxxxxxxxxxxxxxxxxx) (gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Wed Nov 12 09:48:10 EST 2008

BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000010800000 (usable)
No mptable found.
Built 1 zonelists.  Total pages: 67584
Kernel command line:  root=/dev/xvda rw selinux=0
Initializing CPU#0

PID hash table entries: 2048 (order: 11, 16384 bytes)
Xen reported: 2127.994 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)

Software IO TLB disabled
Memory: 245548k/270336k available (2418k kernel code, 16292k reserved, 1349k data, 176k init)
Calibrating delay using timer specific routine.. 5526.34 BogoMIPS (lpj=11052685)
Security Framework v1.0.0 initialized

SELinux:  Disabled at boot.
Capability LSM initialized
Mount-cache hash table entries: 256
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 2048K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 0

(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 1B7A0 could not acquire Mutex [2] [20060707]

No dock devices found.
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 1B7A0 could not acquire Mutex [2] [20060707]
Brought up 1 CPUs
PCI: Fatal: No PCI 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 driver usbfs
usbcore: registered new driver hub

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: 4096 (order: 3, 32768 bytes)
TCP established hash table entries: 16384 (order: 6, 262144 bytes)
TCP bind hash table entries: 8192 (order: 5, 131072 bytes)

TCP: Hash tables configured (established 16384 bind 8192)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1231282162.222:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)

Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key DBA16EE6DC31700
- User ID: CentOS (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
Bootdata ok (command line is  root=/dev/xvda rw selinux=0)
Linux version 2.6.18-92.1.18.el5xen (mockbuild@xxxxxxxxxxxxxxxxxxxx) (gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Wed Nov 12 09:48:10 EST 2008

BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000010800000 (usable)
No mptable found.
Built 1 zonelists.  Total pages: 67584
Kernel command line:  root=/dev/xvda rw selinux=0
Initializing CPU#0

PID hash table entries: 2048 (order: 11, 16384 bytes)
Xen reported: 2127.994 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)

Software IO TLB disabled
Memory: 245548k/270336k available (2418k kernel code, 16292k reserved, 1349k data, 176k init)
Calibrating delay using timer specific routine.. 5526.34 BogoMIPS (lpj=11052685)
Security Framework v1.0.0 initialized

SELinux:  Disabled at boot.
Capability LSM initialized
Mount-cache hash table entries: 256
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 2048K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 0

(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 1B7A0 could not acquire Mutex [2] [20060707]

No dock devices found.
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 1B7A0 could not acquire Mutex [2] [20060707]
Brought up 1 CPUs
PCI: Fatal: No PCI 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 driver usbfs
usbcore: registered new driver hub

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: 4096 (order: 3, 32768 bytes)
TCP established hash table entries: 16384 (order: 6, 262144 bytes)
TCP bind hash table entries: 8192 (order: 5, 131072 bytes)

TCP: Hash tables configured (established 16384 bind 8192)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1231282162.222:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)

Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key DBA16EE6DC31700
- User ID: CentOS (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 driver hiddev
usbcore: registered new 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
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39

TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
XENBUS: Device with no driver: device/vbd/51712
XENBUS: Device with no driver: device/vif/0

Write protecting the kernel read-only data: 461k
Red Hat nash version 5.1.19.6 starting
Mounting proc filesystem
Mounting sysfs filesystem
Creating /dev
Creating initial device nodes
Setting up hotplug.

Creating block device nodes.
Loading xennet.ko module
netfront: Initialising virtual ethernet driver.
netfront: device eth0 has flipping receive path.
Loading ehci-hcd.ko module
Loading ohci-hcd.ko module

Loading uhci-hcd.ko module
USB Universal Host Controller Interface driver v3.0
Loading jbd.ko module
Loading ext3.ko module
Loading xenblk.ko module
Registering block device major 202
 xvda: unknown partition table

Scanning and configuring dmraid supported devices
Creating root device.
Mounting root filesystem.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Setting up other filesystems.

Setting up new root fs
no fstab.sys, mounting internal defaults
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
exec of init (/sbin/init) failed!!!: No such file or directory

Kernel panic - not syncing: Attempted to kill init!
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