Jonas Genannt - xen

Xen - error: (22, 'Invalid argument')

nospam@example.com (Jonas Genannt) — Fri, 06 Jul 2007 23:40:51 +0200

If you want to start an DomU with xm create foo.bar.domain and you get the following output:

error: (22, 'Invalid argument')

I have found the following two possible problems:

DomU kernel has got no Xen support

DomU kernel uses PAE; hypervisor and Dom0 kernel does not support PAE

Xen - 4gb seg fixup - Etch

nospam@example.com (Jonas Genannt) — Sun, 20 May 2007 15:35:48 +0200

If you get this "4gb seg fixup" message on tty and/or in your /var/log/messages after the reboot to the Xen Hypervisor on Etch, you should check if you installed libc6-xen on your system.

If not, install it, and reboot the system again.

Xen 3.0.2 - weird

nospam@example.com (Jonas Genannt) — Mon, 23 Oct 2006 00:21:00 +0200

If you get this error on starting up an domU:

Error: Device 769 (vbd) could not be connected. Backend device not found.

I have found two possible errors:

the disk = [ ] section is wrong ( loop file not found / LVM not found)

xen dom0 kernel missing loop device support (or to few possible devices [max_loop parameter])

Xen included to the kernel soon?

nospam@example.com (Jonas Genannt) — Fri, 14 Apr 2006 19:32:21 +0200

Today I have read on Heise.de that Xen is one step closer to go into the linux kernel.

I hope this would be soon, because I am a big fan of Xen.

Xen 3.0.2 with Debian sarge - weird

nospam@example.com (Jonas Genannt) — Tue, 11 Apr 2006 20:17:04 +0200

If you get an error like this:

Error: Device 0 (vif) could not be connected. Hotplug scripts not working.

You musst install hotplug with apt-get on the dom0 system.
After this installation you can start a new domU session...

Very crazy :-/