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Attempting to follow your notes.

I have the following ubuntu kernel.

Linux version 2.6.35-24-virtual

This is just a standard ubuntu UEC image.

With command line options.

Command line: root=/dev/xvda ro

I've got a dom0 running with the following.

menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-xen-amd64 and XEN 4.0-amd64' --class debian --class gnu-linux --class gnu --class os --class xen {

Which seems to be right.

The following error still occurs.

[    0.190303] md: Waiting for all devices to be available before autodetect
[    0.190315] md: If you don't use raid, use raid=noautodetect
[    0.190508] md: Autodetecting RAID arrays.
[    0.190520] md: Scanned 0 and added 0 devices.
[    0.190528] md: autorun ...
[    0.190534] md: ... autorun DONE.
[    0.190629] VFS: Cannot open root device "xvda" or unknown-block(0,0)
[    0.190641] Please append a correct "root=" boot option; here are the available partitions:
[    0.190658] ca00         1441792 sda driver: vbd
[    0.190671] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    0.190683] Pid: 1, comm: swapper Not tainted 2.6.35-24-virtual #42-Ubuntu
[    0.190693] Call Trace:

When switching it to sda it works though. Following your notes it seems like the dom0 kernel version shouldn't be having this issue?

http://lists.debian.org/debian-l10n-english/2010/12/msg00059.html

On 8/20/11 6:53 AM, "Thomas Goirand" <thomas at goirand.fr> wrote:

On 08/20/2011 05:40 AM, Joshua Harlow wrote:
> So what I've figured out is the following seems to work with xen4.

The naming of sda vs xvda has nothing to do with the hypervisor, and a
lot to do with your kernel.

Thomas


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