Hi! I''m new to Xen and have a general question about running it. Assuming a user can access an unprivileged Xen domain, is it possible to set up new domains running inside the domain the user can access? Does hardware virtualization help in any way for this? Thanks in advance! Best regards, Alexander Wieder _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Yes, this is possible. Hardware virtualization is necessary. You can install Xen on the base system, create a HVM domain, and install Xen (PV) in that guest domain. Regards, Zach On Wed, Oct 15, 2008 at 11:00, test <test@migrate.dynamischer-diskord.de>wrote:> Hi! > > I''m new to Xen and have a general question about running it. > > Assuming a user can access an unprivileged Xen domain, is it possible to > set up new domains running inside the domain the user can access? > > Does hardware virtualization help in any way for this? > > Thanks in advance! > > > Best regards, > > Alexander Wieder > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, Oct 15, 2008 at 8:14 AM, Zach Shepherd <xen@zjs.name> wrote:> Yes, this is possible. Hardware virtualization is necessary. > > You can install Xen on the base system, create a HVM domain, and install > Xen (PV) in that guest domain. > > Regards, > Zach >I''m seeing a lot of noise on the kvm lists about nested VMs but over there they only work on AMD hardware because Intel hasn''t implemented it yet. I''m not sure how it works with Xen. Grant McWilliams Some people, when confronted with a problem, think "I know, I''ll use Windows." Now they have two problems. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> I''m seeing a lot of noise on the kvm lists about nested VMs but over there > they only work on AMD hardware because Intel hasn''t implemented it yet. I''m > not sure how it works with Xen. > > Grant McWilliamsNested svm (http://avikivity.blogspot.com/2008/09/nested-svm-virtualization-for-kvm.html) is requried for KVM to do any nesting and kvm is in the process of implementing it. Xen on the other had doesn''t need to nest virtualization extensions since it doesn''t require hardware support. AFAIK, nested SVM is not implemented for Xen, but it is probably just a matter of time assuming there is enough interest from Xen users and developers. BTW, Virtualbox also supports nested SVM. Cheers, Todd -- Todd Deshane http://todddeshane.net http://runningxen.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> > > Nested svm ( > http://avikivity.blogspot.com/2008/09/nested-svm-virtualization-for-kvm.html > ) > is requried for KVM to do any nesting and kvm is in the process of > implementing it. > > Xen on the other had doesn''t need to nest virtualization extensions > since it doesn''t > require hardware support. AFAIK, nested SVM is not implemented for Xen, but > it > is probably just a matter of time assuming there is enough interest > from Xen users > and developers. > > BTW, Virtualbox also supports nested SVM. > > Cheers, > Todd > >Really? So we can nest PVs now? I''m using VBox for a project where I need multiple VMs and inside each a Virtualized Network with more VMs. I just assumed it couldn''t do it yet since the posts just started showing up on the KVM site and I''ve seen nothing on the VBox list. The code changes to KVM for nested SVM are about 1000 lines. Thats not much. Grant McWilliams _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> Really? So we can nest PVs now?Yes, just as Zach explained above. Cheers, Todd -- Todd Deshane http://todddeshane.net http://runningxen.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users