[fedora-virt] Installing kernel packages under libguestfs

[Charles Duffy]

I've attached two patches to the bugzilla ticket, 
[https://bugzilla.redhat.com/attachment.cgi?id=346476] and 
[https://bugzilla.redhat.com/attachment.cgi?id=346475], which resolve 
the issue for me.

Short story: initramfs can't be bind mounted. (I actually ran into this 
several months back on one of my own projects, but failed to remember it 
in this context until recently). As our /dev is on an initramfs 
filesystem, the attempt to bind mount it into /sysroot/dev was failing. 
Mounting a tmpfs filesystem on /dev before running MAKEDEV works around 
the core issue.

Using --rbind rather than --bind for the bind mounts around --command is 
a relatively minor enhancement, making any other mounts under /dev, /sys 
and /proc (such as /dev/pts) visible to commands running in the guest.