I am currently running virtualbox on linux to run some simple webserver linux hosts. This is because I like the portability and extra isolation security.
Because the host (and guests) are Ubuntu, and because it looks like Sun is winding down Virtualbox, I want to see if I can move to Xen. I installed the Ubuntu host Xen packages, rebooted, converted my virtualbox disk file into a raw partition, and created a .conf file. With some modest hand-editing to protect the innocent, it looked like this:
# ls -lth /home/me/Xen-VMs/domains/test.img -rw-r--r-- 1 me me 20G Feb 3 16:02 test.img # file test.img test.img: DOS/MBR boot sector # cat /etc/xen/test.conf name="test" bootloader="pygrub" disk = ['file:/home/me/Xen-VMs/domains/test.img,sda,w'] memory = 2048
I then did an
xl create /etc/xen/test.conf which worked (cause
xl list showed test), and I could start it (
xl reboot test) after I had memset the 0 domain. I then even got this VM started, but it always blocked or paused (and the network to the guest was not yet up). Well, maybe it is not a good idea to start with an existing VM. who knows what guest virtualbox addins the xen hypervisor is blocking for.
So I wanted to try Xen from scratch. I tried something similar following this guide,
xen-create-image --hostname=tutorial-pv-guest \ --memory=512mb \ --vcpus=2 \ --dir=/home/me/Xen-VMs \ --dhcp \ --pygrub \ --dist=wheezy
where I replaced the LVM with a raw dir, but that one died with an error in the creation. I tried the example in the xl perl script, but
# xen-create-image --size=2Gb --dhcp --dist=stable --dir=/home/ivo/Xen-VMs --hostname=testmexen ... xt-install-image --hostname=testmexen --location=/tmp/y3U0xqhG18 --dist=stable --install-method=debootstrap --mirror=http://us.archive.Ubuntu.com/ubu ntu/ --cache=yes --cachedir=/var/cache/apt/archives/ --arch=amd64 2>&1' failed with exit code 32512.
Digging deeper, this may or may not be the case
W: Cannot check Release signature; keyring file not available /usr/share/keyrings/debian-archive-keyring.gpg I: Retrieving Release E: Failed getting release file http://us.archive.Ubuntu.com/Ubuntu/dists/stable/Release Running command '/usr/sbin/debootstrap --arch amd64 stable /tmp/J06gK4zZ0i http://us.archive.Ubuntu.com/Ubuntu/ 2>&1' failed with exit code 256.
Not having a base makes it difficult for me to trace what is actually needed to get Xen to work.
Is Xen even the right tool for the job? That is, I want one raw image disk file that I can move around, if need be, to another computer, with good isolation of the guest from its host.
Is there a GUI (like the VirtualBox one) that shows me what's happening in my running but blocked VM?
Did I make any easily correctible mistakes here, especially in the "start-from-scratch" attempt?