RE: [Xen-users] Trouble in boot dom0 in xen3.0devel

[yang jianguo <yangjianguo_biy@xxxxxxxxxxxx>]

i added "noreboot" to read the err info:

Mounted /proc filesystem

Mounting sysfs

Creating /dev

Starting udev

Creating root device

Mounting root filesystem

mount: error 2 mounting ext3

mount: error 2 mounting none

Switching to new root

switchingroot:mounting failed: 22

umount /initrd/dev failed: 2

Kernel panic-not syncing: Attempted to kill init!

 

----The new menu.lst is:-------

 

kernel /xen.gz dom0_mem=131072 console=vga

module /vmlinuz-2.6.11.2-xen0 root=dev/hda1 ro console=tty0 noreboot

module /initrd-2.6.11.2-xen0

 

----the initrd-XXX-xen0 is made as:

mkinitrd   initrd-2.6.11.2-xen0   2.6.11.2-xen0

"Petersson, Mats" <mats.petersson@xxxxxxx> 写道：

If you add "noreboot" to the end of kernel line, the machine shouldn't try to reboot on error, at least if the error is caused by something that causes XEN's machine_restart to be called. Obviously, if it's a triple-fault, then the machine will reboot regardless, in which case the more safe method to get the debug output is to use a serial console, such as "com1=115200,n81 console=vga, com1".

 

I hope this helps.

 

--

Mats

---

From: yang jianguo [mailto:yangjianguo_biy@xxxxxxxxxxxx]
Sent: 20 July 2005 12:33
To: Petersson, Mats
Subject: RE: [Xen-users] Trouble in boot dom0 in xen3.0devel

i change to:

kernel /xen.gz dom0_mem=131072 console=vga

initrd /initrd-2.6.11.2-xen0 root=dev/hda1 ro console=tty0

it said it is not a xen compitable img

 

so i change to:

kernel /xen.gz dom0_mem=131072 console=vga

module /vmlinuz-2.6.11.2-xen0 root=dev/hda1 ro console=tty0

module /initrd-2.6.11.2-xen0

 

and it after display info:starting ?ev?, too quick to read, and then the machine rebooted.

 

still can not boot

"Petersson, Mats" <mats.petersson@xxxxxxx> wrote：

You need to say "module /initrd-2.6.11.2-xen0" instead of initrd, as initrd requries (as it says) that the kernel loaded is linux. You're using a XEN kernel, which can handle taking a initrd as a module, but not as a initrd command (I don't know exactly what the difference is, but trust me, the module instead of initrd works).

 

--

Mats

---

From: yang jianguo [mailto:yangjianguo_biy@xxxxxxxxxxxx]
Sent: 20 July 2005 12:05
To: Petersson, Mats
Cc: Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] Trouble in boot dom0 in xen3.0devel

Thanks Petersson,

I have not LVM, the Xen use xen.gz as a kernel and use vmlinuz-2.6.11.2-xen0 as a module, if i initrid vmlinuz-xxx-xen0, and add lines in grub/menu.lst:

kernel /xen.gz dom0_mem=131072 console=vga

module /vmlinuz-2.6.11.2-xen0 root=dev/hda1 ro console=tty0

initrd /initrd-2.6.11.2-xen0

 

it said:

Error19: Linux kernel must be loaded before initrd

 

how to set the initrd?
"Petersson, Mats" <mats.petersson@xxxxxxx> writon：

Most likely, you haven't got your initrd set up correctly, so your root file system isn't being detected. The final step in the kernel is to try NFS and Floppy file systems, if it can't find a root fs somewhere else.

 

You either need to make sure that your initrd contains the relevant modules for the disk(s) and file-systems that you use (including for instance LVM if you're using that on the disk). Another method is to disable modules, building a monolithic kernel. That way, you don't need an initrd to get things going. This was the way I got it working when I had the same problem.

 

--

Mats

---

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of yang jianguo
Sent: 20 July 2005 10:03
To: Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Trouble in boot dom0 in xen3.0devel

xen3.0 booted and dom0 kernel loaded, it said:

Root-NFS: No NFS server available, giving up.

VFS: Unable to mount root fs via NFS, trying floppy.

VFS: Insert root floppy and press ENTER

what should i do?

-----------info----------------------
 
xen: unstable, 3.0-devel
 
kernel 2.6.11.2-xen0
 
.coooom/xen-users

---

DO YOU YAHOO!?

__________________________________________________
赶快注册雅虎超大容量免费邮箱?
http://cn.mail.yahoo.com

__________________________________________________
赶快注册雅虎超大容量免费邮箱?
http://cn.mail.yahoo.com

__________________________________________________
赶快注册雅虎超大容量免费邮箱?
http://cn.mail.yahoo.com

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users