Le dimanche 26 juillet 2009 09:17, vous avez écrit : > Manoj Srivastava wrote: > > On Sat, Jul 25 2009, Joe Smith wrote: > >> "Manoj Srivastava" <sriva...@debian.org> wrote: > >>>> Virt-what is more accurate than Imvirt, version 1.0 can tell the > >>>> difference between Xen Dom0 and DomU. The new version (1.1, released > >>>> on 23 july 2009) can tell the difference between QEMU and KVM, and can > >>>> tell if you are running inside a Xen fullvirt guest. > >>> > >>> This sounds cool. Does it support user-mode-linux as well? > >> > >> At the moment, it can detect VMWare, Microsoft Versions of Virtual PC, > >> OpenVZ, Xen-HVM, Xen-DomU, Xen-Dom0, KVM, and QEMU. > >> > >> I'm betting the author would be willing to incorporate checks for > >> other systems if they can be easilly done in a bash script. > > > > r...@cinder:~# cat /proc/cpuinfo > > processor : 0 > > vendor_id : User Mode Linux > > model name : UML > > mode : skas > > host : Linux anzu 2.6.30.2-anzu #3 SMP Thu Jul 23 15:24:12 CDT > > 2009 x86_64 bogomips : 548.86 > > > > It would be appreciated if the ITP'er could convey this to > > upstream. The output above should leave no doubt that we are running in > > an UML machine. > > Some doubt always exists; the environment could be lying. Someone might > run UML under VMWare under Mac OS X, if that's not too ridiculous. > Which host would you like to know about?
Some virtualisation systems can be used into virtualised environments, but the guest is isolated and gets hardware informations from the host that manages it directly. For example if you have a host with UML in a VMWare guest, the UML guest gets the hardware informations given by the UML host. The UML guest has no way to be aware of the UML host virtualisation. > > Something to think about eventually might be nested virtualization, a la > Blue Pill. (Not something to worry about right now, though.) > > What about VirtualBox, assuming it survives Oracle? (Maybe it will; the > OSE version is GPL, is it not?) Not tested yet, but if you do it you can fill in a wishlist bug report and give the informations you got about the virtualised environment. Thank you, -- Laurent Léonard
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