[uml-devel] Anyone running nested UMLs? It seem to work well enough...

[uml-devel] Anyone running nested UMLs? It seem to work well enough...

[Blaisorblade]

Well, inside my 2.6.9-bs5 session, I compiled a kernel as little stress-test, 
it worked, and just for fun I tried running it (even if I didn't tune 
CONFIG_NEST_LEVEL)... well, to my biggest surprise, the nested UML was able 
to boot and work well enough.

A lot of "segmentation fault" messages appeared, but I expected that this 
feature wouldn't work at all... (and also I didn't tune CONFIG_NEST_LEVEL, as 
I said, and it makes sense that this causes the Segfaults). So it's nice to 
see this working.

However, is anybody using them? For which reasons?

Bye
-- 
Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729
http://www.user-mode-linux.org/~blaisorblade


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Re: [uml-devel] Anyone running nested UMLs? It seem to work well enough...

[Allen Chan]

I played with nesting quite a bit when the -bb1 and -bb2 kernels were 
the latest available, trying to set up a network simulation for 
educational/testing purposes.  Although the nested kernels (with 
properly configured CONFIG_NEST_LEVEL) booted properly and appeared 
to work well, it ran into trouble (i.e., seg faults and/or hangs) 
whenever I tried to ssh into one of the nested kernels.

When I find some free time, I'll try it again with the latest UML 
kernels and report any successes or failures.

On Thursday 13 January 2005 11:22 am, Blaisorblade wrote:
> Well, inside my 2.6.9-bs5 session, I compiled a kernel as little
> stress-test, it worked, and just for fun I tried running it (even
> if I didn't tune CONFIG_NEST_LEVEL)... well, to my biggest
> surprise, the nested UML was able to boot and work well enough.
>
> A lot of "segmentation fault" messages appeared, but I expected
> that this feature wouldn't work at all... (and also I didn't tune
> CONFIG_NEST_LEVEL, as I said, and it makes sense that this causes
> the Segfaults). So it's nice to see this working.
>
> However, is anybody using them? For which reasons?
>
> Bye


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