From: Walker, Bruce J <bruce.walker@hp...> - 2003-08-25 23:16:26
Actually what we did in the past was sort of the other way around (on a
single base Linux kernel we used a UML-based SSI kernel to create an SSI
cluster on a single machine (which we thought might be useful for
We have tested runing VMWare on top of an SSI kernel and that worked ok,
so you can load balance signons and VMWare sessions (we couldn't migrate
an active session due to cloning or some such; VMWare has it's own
checkpoint capability which could be used for migration.
I don't think anyone has tried a UML kernel on top of an underlying SSI
cluster. I don't think migrating UML machines will be easy since
current UML uses some special kernel-to-UML IPC mechanism?
From: Greg Freemyer [mailto:freemyer-ml@...]=20
Sent: Monday, August 25, 2003 3:56 PM
Subject: [SSI-devel] Can SSI be used to run Virtual Servers?
I think there was once discussion of OpenSSI using UML to run multiple
vertual servers and effectively load-balance them around the nodes.
Obviously, no single virtual server would have more horsepower than a
single node, but it seems like a great way to support a large number of
virtual servers in a fairly HA way.
Is this now possible? =20
Is it part of the road-map to support something like this?
Is the HA concept feasible? (In general I doubt it, but how about doing
something like heartbeat from linux-HA inside the virtual servers?)
FYI: I was talking to a Data Security expert Friday and he said that
Virtual Servers were going to be very important in the future to ensure
the confidentiallity of the individual apps and data and SSI Linux
sprang to my mind as potentially a good fit.
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