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

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Mon, Apr 19, 2010 at 04:58:46PM +0800, zhangxiang wrote:
> 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:

You need to attach the whole output to help you along.
> 
> 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:

By selected you mean 'y', correct?


> CONFIG_PARAVIRT_GUEST 
> CONFIG_XEN 
> CONFIG_HVC_DRIVER and CONFIG_HVC_XEN 
> CONFIG_XEN_BLKDEV_FRONTEND 
> CONFIG_XEN_NETDEV_FRONTEND

I thought there was also a FBDEV and KBDDEV, but I could be wrong.
> 
> 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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>  Institute of Computing Technology
>  Chinese Academy of Sciences
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