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Re: [Xen-users] Re: Xen 4.0.1 on Ubuntu Lucid 10.04 - Desktop / Server -

To: Priya <pbhat@xxxxxxxxxxxx>
Subject: Re: [Xen-users] Re: Xen 4.0.1 on Ubuntu Lucid 10.04 - Desktop / Server - 64 Bits - With OpenGL (Intel GEM) enabled - From Linuxcon Brazil! :-D
From: hurenkam <hurenkam@xxxxxxxxx>
Date: Thu, 16 Sep 2010 17:30:18 +0200
Cc: Boris Derzhavets <bderzhavets@xxxxxxxxx>, nunziaG84@xxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx, Pasi Kärkkäinen <pasik@xxxxxx>
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> xenfs is not mounted. Here is the output for the mount command:
> I did a modprobe on xenfs but I cannot mount it yet. Could you please
> give me the correct command line arguments for doing so. Here are my
> outputs:
> root@XenOpen:~# modprobe xenfs
> root@XenOpen:~# mount xenfs
> mount: can't find xenfs in /etc/fstab or /etc/mtab

Try this:
# mount -t xenfs xenfs /proc/xen

> There is no "xen" directory in /dev....Here is what I have:
That's also a problem, it should exist, and should contain the

# ls -l /dev/xen
total 0
crw-rw---- 1 root root 10, 62 2010-09-16 00:37 evtchn
crw-rw---- 1 root root 10, 61 2010-09-16 00:37 gntdev

Perhaps they are built as modules, try modprobing them:
# modprobe xen-gntdev
# modprobe xen-evtchn

Ubuntu is unaware of these devices, so unless you built them
into your kernel, they may not automatically be available
after you boot.
Probably udev could/should take care of this during boot, but
i've just decided to configure my kernel with these devices
as built-in. 
If you wish, you can add the modules to your modules list in 
/etc/initramfs-tools/modules, then they will automatically
be added to your initrd when you run update-initramfs to
create your initrd.


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