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[Xen-users] Need mega basic Xen help

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Need mega basic Xen help
From: "Rob Greene" <robgreene@xxxxxxxxx>
Date: Thu, 24 Apr 2008 20:59:22 -0500
Delivery-date: Thu, 24 Apr 2008 18:59:59 -0700
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I am confused.  Can someone either point me to some documentation a normal human can use or point out my error?

The only domU's I have been able to create in CentOS 5.1 + Xen is another CentOS 5.1 and a Fedora 8 instance.  Neither of those seem to be appropriate for MythTV because the IVTV driver comes bundled with the 2.6.22 kernel, and CentOS isn't about video hardware, and the FC8 driver at atrpms is apparently tied to another non-Xen kernel from who knows where (it's not Fedora stock).

So... I'd like to try Fedora Core 9 (currently beta) or Ubuntu.  I cannot get either of them to boot into an installer.  FC9 doesn't recognize the xen network (xennet, I think?) and I cannot for the life of me figure out what kernel/initrd images to use for Ubuntu.  If I manually choose the FC9 xennet driver, it just spews across the consoles and dies!  Ubuntu never even gets off the ground.  I looked at Debian, but it's the same thing -- I don't know how to even get it started.   :-(

So... I thought it was great that jailtime.org has a Ubuntu 7.04 image.  But, I cannot even get *that* to boot.

Here's my error message when watching the console:
VFS: Cannot open root device "sda1" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

And my config:
kernel = "/boot/vmlinuz-2.6.18-53.1.14.el5xen"
memory = "256"
name = "ubuntu"
vif = ['']
dhcp = "dhcp"
disk = ['file:/var/lib/xen/images/ubuntu.img,sda1,w', 'file:/var/lib/xen/images/ubuntu.swap,sda2,w']
root = "/dev/sda1 ro"

I didn't know which kernel to grab, so I just used the CentOS.  However, if that's not right, I don't know what to use!

Here's the sample config file that ships with the Ubuntu 7.04 image:
kernel = "/boot/vmlinuz-2.6.18-xen"
memory = "256"
name = "ubuntu"
vif = ['']
dhcp = "dhcp"
disk = ['file:/xen/ubuntu/ubuntu.7-04.img,sda1,w', 'file:/xen/ubuntu/ubuntu.swap,sda2,w']
root = "/dev/sda1 ro"

Sorry about the whining, but I am really missing something basic here and do not see it where I'm looking.


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