Re: http://www.kernelthread.com/publications/virtualization/
<>Nice paper there, thanks for the refferal. I can't for the life of me comprehend why Mr. Singh would start such a compelling 1300 line paper with the word "Micro$oft". ;0 Sure they deserve mention, but not the first word! ugh... So they try to buy themselves into *nix lore - that's a joke - good luck!
Seriously, mature clustering and virtualization implimentation ability are IMHO what differentiates the men from the mice as far as an OS goes. Can't be done without first overcoming the fine-grained issues of stability, performance, modularization, process & ACL management, etc. These prerequisite 'responsibilities' have always been prioritized in the unix and linux OS's - and Linux is the most modularized OS i've ever worked with.
Regarding stability, since the late kernel 2.5 days, when OSDL and IBM began collaborating on the "Linux Stabilization and Linux Testing" project, we've seen maturity in the release_process of the kernel at least, though by 2.4 linux was already remarkably stable. (mainly there was not such a comprehensively systematic approach to qualification of a production release until late 2.5.x).
Some details of the kernel testing for linux can be seen at:
http://www.osdl.org/docs/ibm_26_stabilization_test_plan.html
http://www.osdl.org/projects/26lnxstblztn/results/ (regression test results and the like)
But back to the point of virtualization, which conveniently moots the semantic debate on "simulation" and "emulation" (after reading Mr. Singh's paper, I'd think to just concentrate on a particular implimentation and try to handle tasks related to practical issues on a case-by-case basis - and do the needful to attain the goal rather than worry about what somebody might label the result)
What I'd love to see is something like solaris containers implimented in Linux - by that I mean not just the functionality, but ease of management. (I've only read about it though, not implimented it yet)
I'm highly encouraged by Sun's efforts to open the code to Solaris and wonder if any of the virtualization features will be included. (esp. since it's preportedly based on BSD's jail)
What I'm most interested in doing is having the ability to impliment a virtual OS `on the fly` for say, a customer who
wants a 'dedicated' web server or something.
Pls. do share your experience with any of the technology mentioned in the paper if you have.
- tribh
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