Booting Failures when using linux-2.6.33.2 as DomU with paravirt-ops support

["zhangxiang" <zhangxiang@ncic.ac.cn>]

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Hello, everyone!

   I am trying to boot linux-2.6.33.2 as DomU' kernel in my virtualization platform 
(Xen-3.4.2, linux-2.6.18.8 as Dom0, paravirtualization, AMD Opteron 2216, 
CentOS 5.3 without virtualization support). But it is always core-dump when 
booting. The messages are as follows:

Loading aic79xx.ko module
Loading sata_nv.ko module
Creating root device.
Mounting root filesystem.
mount: could not find filesystem '/dev/root'
Setting up other filesystems.
Setting up new root fs
setuproot: moving /dev failed: No such file or directory
no fstab.sys, mounting internal defaults
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
switchroot: mount failed: No such file or directory
Kernel panic - not syncing: Attempted to kill init!
Pid: 1, comm: init Not tainted 2.6.33.2 #13
Call Trace:
 [<ffffffff81042d00>] panic+0xa0/0x1a0
 [<ffffffff810075df>] ? xen_restore_fl_direct_end+0x0/0x1
 [<ffffffff81078e40>] ? call_rcu_sched+0x10/0x20
 [<ffffffff81078e59>] ? call_rcu+0x9/0x10
 [<ffffffff8104521e>] ? put_files_struct+0x7e/0xd0
 [<ffffffff81457955>] ? _raw_write_lock_irq+0x15/0x30
 [<ffffffff8104d4b7>] ? exit_ptrace+0xb7/0x140
 [<ffffffff81046a8f>] do_exit+0x6df/0x7a0
 [<ffffffff8102c7af>] ? do_page_fault+0x14f/0x310
 [<ffffffff81046b90>] do_group_exit+0x40/0xd0
 [<ffffffff81046c32>] sys_exit_group+0x12/0x20
 [<ffffffff8100af02>] system_call_fastpath+0x16/0x1b


The DomU's configuration file is as follows:
kernel = "/boot/vmlinuz-2.6.33.2" 
ramdisk = "/boot/initrd-2.6.33.2.img" 
memory = 512 
name = "vmtmp" 
vcpus = 2 
vif = [ '' ] 
ip = "10.10.135.182" 
netmask = "255.255.0.0" 
disk = [ 'file:/sda3/vmdisk2,xvda,w'] 
root = "/dev/xvda rw" 
extra = "4" 
extra='xencons=hvc0' 


I do this experiment depend on the link:
http://wiki.xensource.com/xenwiki/XenParavirtOps 

I download linux-2.6.33.2 from www.kernel.org, and make sure that all the following 
config options are selected when compling:
CONFIG_PARAVIRT_GUEST 
CONFIG_XEN 
CONFIG_HVC_DRIVER and CONFIG_HVC_XEN 
CONFIG_XEN_BLKDEV_FRONTEND 
CONFIG_XEN_NETDEV_FRONTEND

I also use /dev/xvdX instead of /dev/sda1 in both DomU's configurion file and /etc/fstab.

So I really do not know why the experiment always fails.
Could somebody help me with this?
Thank you very much for your help!

Xiang Zhang
Apr 19th, 2010


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