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dd if=/dev/zero of=vmdisk2 bs=4096 count=1310720

mkfs -t ext3 vmdisk2

mount -o loop vmdisk2 /mnt

rsync -aH /{var,root,dev,etc,usr,bin,sbin,lib,lib64,home} /mnt

mkdir /mnt/{proc,sys,tmp,mnt}

sync

umount /mnt

I am sure that it will work, because when I use linux-2.6.18.8 (download from http://www.xen.org/ )

as DomU's kernel, the VM can boot sucessfully. The guest configuration file is the same except the

following two lines:

kernel = "/boot/vmlinuz-2.6.18.8-xenU"

ramdisk = "/boot/initrd-2.6.18.8-xenU.img"

The whole output when booting is list as follows:

[root@node18 sda3]# xm cre -c zxxm2

Using config file "./zxxm2".

Started domain zxxm2 (id=4)

Bootdata ok (command line is root=/dev/xvda rw ip=10.10.135.182:127.0.255.255::255.255.0.0::eth0:off xencons=tty1)

Linux version 2.6.18.8-xenU (root@node18) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)) #2 SMP Mon Apr 19 20:47:34 CST 2010

BIOS-provided physical RAM map:

Xen: 0000000000000000 - 0000000020800000 (usable)

Built 1 zonelists. Total pages: 129222

Kernel command line: root=/dev/xvda rw ip=10.10.135.182:127.0.255.255::255.255.0.0::eth0:off xencons=tty1

Initializing CPU#0

PID hash table entries: 2048 (order: 11, 16384 bytes)

Xen reported: 2412.362 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: 507784k/532480k available (2062k kernel code, 16496k reserved, 690k data, 132k init)

Calibrating delay using timer specific routine.. 4828.76 BogoMIPS (lpj=24143803)

Mount-cache hash table entries: 256

CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)

CPU: L2 Cache: 1024K (64 bytes/line)

CPU: Physical Processor ID: 0

CPU: Processor Core ID: 0

SMP alternatives: switching to UP code

Brought up 1 CPUs

migration_cost=0

checking if image is initramfs... it is

Freeing initrd memory: 2848k freed

NET: Registered protocol family 16

SMP alternatives: switching to SMP code

Initializing CPU#1

CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)

CPU: L2 Cache: 1024K (64 bytes/line)

CPU: Physical Processor ID: 0

CPU: Processor Core ID: 0

migration_cost=546

Brought up 2 CPUs

suspend: event channel 9

xen_mem: Initialising balloon driver.

NET: Registered protocol family 2

IP route cache hash table entries: 16384 (order: 5, 131072 bytes)

TCP established hash table entries: 65536 (order: 8, 1048576 bytes)

TCP bind hash table entries: 32768 (order: 7, 524288 bytes)

TCP: Hash tables configured (established 65536 bind 32768)

TCP reno registered

Initializing Cryptographic API

io scheduler noop registered

io scheduler anticipatory registered (default)

io scheduler deadline registered

io scheduler cfq registered

RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize

Xen virtual console successfully installed as tty1

Event-channel device installed.

netfront: Initialising virtual ethernet driver.

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

xen-vbd: registered block device major 202

blkfront: xvda: barriers enabled

xvda: unknown partition table

XENBUS: Device with no driver: device/console/0

IP-Config: Complete:

device=eth0, addr=10.10.135.182, mask=255.255.0.0, gw=255.255.255.255,

host=10.10.135.182, domain=, nis-domain=(none),

bootserver=127.0.255.255, rootserver=127.0.255.255, rootpath=

Freeing unused kernel memory: 132k freed

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.

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

INIT: version 2.86 booting

Welcome to CentOS release 5.3 (Final)

Press 'I' to enter interactive startup.

Cannot access the Hardware Clock via any known method.

Use the --debug option to see the details of our search for an access method.

Setting clock (utc): Tue Apr 20 15:40:39 CST 2010 [ OK ]

Starting udev: [ OK ]

Loading default keymap (us): /etc/rc.d/rc.sysinit: line 396: /dev/tty0: No such device or address

[FAILED]

Setting hostname node182: [ OK ]

raidautorun: failed to open /dev/md0: No such device or address

Checking filesystems

Checking all file systems.

[/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a /dev/xvda

/dev/xvda: clean, 194414/1179648 files, 1177758/2359296 blocks

[ OK ]

Remounting root filesystem in read-write mode: [ OK ]

Mounting local filesystems: [ OK ]

Enabling local filesystem quotas: quotaon: Warning: No quota format detected in the kernel.

[ OK ]

rm: cannot remove `/var/run/xend/boot': Is a directory

Enabling /etc/fstab swaps: [ OK ]

INIT: Entering runlevel: 3

Entering non-interactive startup

FATAL: Module ipv6 not found.

CRITICAL : [ipv6_test] Kernel is not compiled with IPv6 support

Bringing up loopback interface: [ OK ]

Bringing up interface eth0: [ OK ]

FATAL: Module ipv6 not found.

CRITICAL : [ipv6_test] Kernel is not compiled with IPv6 support

Starting system logger: [ OK ]

Starting kernel logger: [ OK ]

Starting portmap: [ OK ]

Starting sshd: [ OK ]

Starting xinetd: [ OK ]

Starting NFS services: [ OK ]

Starting NFS quotas: [ OK ]

Starting NFS daemon: [FAILED]

Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName [ OK ]

Starting xfs: [ OK ]

Starting yum-updatesd: [ OK ]

CentOS release 5.3 (Final)

Kernel 2.6.18.8-xenU on an x86_64

node182 login:

It aslo has the output: " xvda: unknown partition table", but it can boot up sucessfully. When

I login and run "fdisk -l", the whole output is as follows:

[root@node182 ~]# fdisk -l

Disk /dev/xvda: 9663 MB, 9663676416 bytes

255 heads, 63 sectors/track, 1174 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/xvda doesn't contain a valid partition table

However, the VM can work normally. So I do not think it is the partitions cause the problem.

I am sure that I select these following config options as "y" when compling linux-2.6.33.2:

CONFIG_EXT2_FS=y

CONFIG_EXT3_FS=y

CONFIG_EXT3_FS_XATTR=y

I do not use any logical volumes, so I do not need to use LVM name when writing the guest

configuration file. In linux-2.6.33.2, CONFIG_DM_LINEAR does not exist. Thus I select the

corresponding one as "y", which named CONFIG_BLK_DEV_DM. However, it also does not work,

and the output is the same.

It is really a difficult problem for me. Thank you again for your help!

Xiang Zhang

2010-4-20

Re: [Xen-devel] Booting Failures when using linux-2.6.33.2 asDomUwith paravirt-ops support