Simon Gottschlag
2008-Aug-13 07:32 UTC
[Xen-users] Xen+Vserver - How to use them together and what is the advantages/disadvantages?
Hello everybody! I''m quite new to Xen and I''ve been using a guide at howtoforge [1] (for debian etch) to install it. The thing there is that they use the xen-vserver package. And I''ve understood that Xen and Vserver are two different viritualization servers and I''ve also understood that they both have their advantages. But what I can''t understand is when I install the (debian etch) packages that use xen-vserver, what is the difference when creating the domU''s? Or is it just that I now can create a Xen domU and a Vserver guset (don''t know what they call them, domU''s to?) on the same kernel? Or is it that I can create a Vserver inside a DomU and vice verse, or both? Would be really nice if someone could try to explain this. Because it feels stupid using a package that I don''t have use for. And if it''s a good idea using them both, to get better performance or anything, could you also explain how to do it or post a link to a place where they do it? Thanks! - Simon [1] http://howtoforge.com/debian_etch_xen_from_debian_repository _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Simon Gottschlag
2008-Aug-14 06:42 UTC
Re: [Xen-users] Xen+Vserver - How to use them together and what is the advantages/disadvantages?
Sweet, thanks for all the help! I''m installing som vservers on my DomU right now and it looks like it works great. I do really like all this stuff with virtual machines and what ever everything is called. Found a guide how to install a vserver at howtoforge: http://howtoforge.com/linux_vserver_debian_etch Thanks again! - Simon On Wed, Aug 13, 2008 at 10:40 PM, Javier Guerra <javier@guerrag.com> wrote:> On Wed, Aug 13, 2008 at 2:32 AM, Simon Gottschlag <simon@gottschlag.se> > wrote: > > Hello everybody! I''m quite new to Xen and I''ve been using a guide at > > howtoforge [1] (for debian etch) to install it. > > The thing there is that they use the xen-vserver package. And I''ve > > understood that Xen and Vserver are two different viritualization servers > > and I''ve also understood that they both have their advantages. > > there are two totally different things that are sometimes called Vserver: > > A: http://linux-vserver.org/ this is a kernel-level ''jail'', much > like Virtuozzo/OpenVZ. (maybe they evolved from this, i''m not sure) > > B: http://www.linuxvirtualserver.org/ this isn''t a virtualization > system at all, more like a load-balancer that creates a "virtual > server" from a bunch of machines. > > the debian xen-vserver packages are the kernel images with both Xen > and vserver patches (it seems the A one) in theory you could use them > when you want to: > > 1) experiment with both, then pick one > 2) use Xen hypervisor, run some DomU''s, and some vserver jails on Dom0 > 3) as above, but use the same vserver-capable kernel on (some) DomU''s, > run several vservers on each DomU. > > option 3 doesn''t sound bad, it might allow you to create more > instances than Xen alone, with very little extra overhead. > > -- > Javier >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users