I have a project at work where we are considering takeing some security
applications that currently require their own set of hardware on each
network (with over a dozen different networks this adds up to quite a few
boxes) and replace them with slightly beefier boxes running the
application in a virtual machine.
my (unspoken) respose to this was 'cool, I'll finally get a chance to
figure out UML like I've been wanting to'
as I attempted to get started I ran into a lot of confusion as it seems
that most of the documentation on the sourceforge and community site seem
to be several years out of date (mostly focusing on the 2.2/2.4
transition, virtually nothing about 2.6 other then the fact that uml got
merged)
I was able to get uml running on 2.6.16rc6 last friday, however I've run
into a couple issues that have stumped me
the host system is a debian 64 bit install, the uml system I'm playing
with first is a stripped down version of the same (I'll also be working
with a 32 bit debian that's stripped down as well once I get this first
one working)
I've got it working with a root_fs image, but I would like to use to
hostfs, when I attempt to use it with the command line
./linux ssl=xterm console=xterm root=/dev/root rootflags=/sandboxes/amd64uml/
rootfstype=hostfs
I get an error about a missing /dev/shm/root
the other big question that I have is about the networking.
what I would really like to do is to have the host machine allocate a
physical network interface for each uml to use as it's eth0. I'm currently
not seeing any way to do this.
as I attempt to use the tuntap interface to configure the uml eth0 as per
the howto I am creating the tap0 device, but when the uml system boots it
doesn't show any ethn interfaces and on the console I get the following
error.
eth0: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
exiting.
I also get several thousand lines of error message like the following
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
Couldnt get a file descriptor referring to the console
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
line_ioctl: tty0: ioctl KDGKBTYPE called
Couldnt get a file descriptor referring to the console
Thanks for the assistance and let me know about any other info that you
need.
David Lang
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