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xen-users
Re: [Xen-users] communication between dom0 and domu
Arijit Ganguly wrote:
All,
Is there any way we can set up a communication channel (not a TCP/IP
based network) between domain0 and unprivileged domains. This can be
useful in a way that we can write automatic configuration mechanisms
for our unprivileged VMs.
If you look either at the testsuite I wrote for the console daemon
(tools/console/testsuite in unstable) or in Dan's xm-test
(http://static.danplanet.com/xm-test/xm-test-0.1.0.tar.gz), you'll see
we've both implemented very similiar protocols that allow commands to be
executed over a domU's console from dom0.
The natural extension of this (when we get multiple console support) is
to dedicate a console channel to something like this that would give you
precisely what you'd want.
Actually, if I were you, I'd just set up a dummy nic that wasn't routed
outside of dom0 and have ssh bind to only that interface in domU. It's
a bit heavier weight but it gets the job done (in a very robust way).
Regards,
Anthony Liguori
Illustration:
I have a domainU running on a host, which doesn;t have network
connectivity (like ssh). I just use the VM as a environment I can
issue commands and get results. Ports on domain0 are blocked
preventing me from accessing the VM console. I do not have an account
in domain0 for security.
What can be done is running a truested software on domain0, which
takes commands and runs them inside domainU and returns me the
results.
The bottomline is a communication channel between dom0 and domU. Any ideas?
Arijit
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http://lists.xensource.com/xen-users
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