Ian,
OK. I copied all the contents from (hdc3) /dev to (hdc1) /dev, and that
let's me boot xenU on hdc1. The problem, however, is that this is not
they way RHEL 4 works--I need to figure out how the xen0 is able to boot
off essentially the same setup.
[root@dyn95394184 xen]# xm list
Name Id Mem(MB) CPU State Time(s) Console
Domain-0 0 495 0 r---- 126.0
test1 1 64 0 -b--- 2.0 9601
[root@dyn95394184 xen]#
-------- Original Message --------
Subject: Re: [Xen-devel] Kernel panic - not syncing: Attempted to kill
init!
Date: Tue, 21 Dec 2004 12:53:15 -0600
From: David F Barrera <dfbp@xxxxxxxxxx>
To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
References: <E1CgWrK-0003vv-00@xxxxxxxxxxxxxxxxx>
<41C844BA.7020801@xxxxxxxxxx>
Ian,
As I indicated earlier, I created an image file, and I am able to boot
xenU now:
Red Hat Enterprise Linux Desktop release 3.90 (Nahant)
Kernel 2.6.9-xenU on an i686
(none) login:
I still can't log in, but I will continue to add files to the image to
make it work. In the image, I copied the contents of (hdc3) /dev to
the image/dev. I still don't understand why I can get xenU to boot
using the system partition (hdc1). I'll keep digging.
David F Barrera
Ian Pratt wrote:
I had tried that (and hda1) before, but sda1 I get an error, too:
[root@dyn95394184 xen]# xm create -c test1 vmid=1
Using config file "test1".
Error: Error creating domain: vbd: Device not found: sda1
try disk = [ 'phy:hdc1,0801,w' ]
0801 == sda1
No difference. Same Kernel panic
Something odd is going on here -- I believe other people have had
RHEL3 working.
I believe it. But RHEL 4 has some differences from RHEL 3, among them
the fact that in RHEL 4 the devices in /dev are created dynamically.
Thus, if I mount hdc1 and look at /dev, it is empty. However, /dev in
hdc3 (xen0) has 671 entries. I have a SuSE 9.0 system where the drive
that I export (equivalent to hdc1, in this case) has many devicen on
/dev, meaning they are static; RHEL 3 is similar.
Can you mount hdc1 in dom 0 OK?
Yes:
[root@dyn95394184 ~]# mount /dev/hdc1 /data1
[root@dyn95394184 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/hdc3 6372520 2732376 3316436 46% /
none 251384 0 251384 0% /dev/shm
/dev/hdc1 7055144 2422572 4274180 37% /data1
[root@dyn95394184 ~]#
Is there an sbin/init
[root@dyn95394184 ~]# ls /data1/sbin/init
/data1/sbin/init
[root@dyn95394184 ~]#
? Is there
a dev directory?
Yes, but it is empty:
[root@dyn95394184 dev]# pwd
/data1/dev
[root@dyn95394184 dev]# ls
[root@dyn95394184 dev]#
It might be worth enabling the debugging printks in
drivers/xen/blkfront/block.h and drivers/xen/blockback/common.h
and rebuilding xen0 / xenU.
I created an image file to experiment, and it seems to go a little
further. The problem has got to be related to the /dev issue.
disk = [ 'file:/boot/initrd.x86.image,0801,w' ]
# Set if you want dhcp to allocate the IP address.
# dhcp="dhcp"
# Set root device.
root = "/dev/sda1 ro"
Red Hat nash version 4.1.18 starting
Mounted /proc filesystem
Mounting sysfs
Creating /dev
Starting udev
Creating root device
Mounting root filesystem
Switching to new root
init started: BusyBox v1.00-pre10 (2004.06.10-04:09+0000) multi-call
binary
Linux localhost.localdomain 2.6.9-xenU #1 Fri Dec 17 15:50:10 CST 2004
i686 unknown
Ian
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