Let's say that your image is called /var/lib/xen/images/disk.img

First you need to access that file like a loopback device

losetup -f /var/lib/xen/images/disk.img

that will create a device like /dev/loop0
If you run "losetup -a" you'll get a list of the loopback devices that are configured.

Lets presume that it was /dev/loop0 that was created.

You have a device now but you don't have partitions yet.
You can do fdisk -l /dev/loop0 to see what partitions are in the loopback device but you can't access them yet.

You need to use kpartx to add the partition mappings.

kpartx -a /dev/loop0

This will add partition mappings under /dev/mapper.

You should now be able to access these like regular partitions.
If you used LVM during your install then you'll need to do a vgscan and a vgchange -ay to activate the volume groups.
Now you can mount the partitions/logical volumes.

At this point I hope you didn't use the default partitioning for both the guest and the host, otherwise you'll have duplicate VG names. There is a way to rename volume groups but that's a story for another day .....

On Tue, 2006-12-26 at 19:28 +1100, Phil Rhoades wrote:

People,

Firstly, congratulations on some nice work! - I could not get
inter-guest or host-guest networking on FC5 but it started working
immediately on FC6 - thanks!

On a FC6 host I have created a FC6 guest minimal install (everything
checked off except for text networking) in a 1.5GB image file.  What is
the format of this image?  Is it possible to somehow use a loopback
switch to mount it like iso9660? - I want to be able to make a copy of
the image file; in the image, edit the /etc/sysconfig/network
and /etc/sysconfig/network-scripts/ifcfg-eth0 files; add an
appropriate /etc/xen config file and then be able to boot a second
guest.  Is this possible somehow?

Thanks,

Phil.