I am new to virtual machines and I have a couple of questions about what vm to use. I would like to run centos 5.4, Windows 7 and Ubuntu on a bare metal vm. After reading many posts on the web, I think xen may be what I need. The question I have are the following: Is the software on xen.org the same as xenserver? I was unable to download a bootable disk of xen on xen.org Does anyone have a link to a bootable copy of the xen on xen.org? I''m not sure what software I should install to have a bare metal vm running on my computer. Thanks for any help. Slash _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I did google it and it says Xen is a type 1. http://en.wikipedia.org/wiki/Hypervisor Please send me the link that says Xen is a type 2. On Wed, Feb 10, 2010 at 10:34 PM, Itamar Reis Peixoto < itamar@ispbrasil.com.br> wrote:> On Thu, Feb 11, 2010 at 1:19 AM, John Smith <slash5bmw@gmail.com> wrote: > > What are you talking about? > > > > I want to run Type 1, bare metal virtualization. Google it. > > > > I think you are the one that does not understand the different types of > > virtualization. if you don''t have a useful reply, please don''t reply. > > Useless replies waste my time and everyone elses time. > > > if you google you will see, xen is not type 1 > > KVM is type 1 > > > > > ------------ > > Itamar Reis Peixoto > > e-mail/msn/google talk/sip: itamar@ispbrasil.com.br > skype: itamarjp > icq: 81053601 > +55 11 4063 5033 > +55 34 3221 8599 >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Thu, Feb 11, 2010 at 9:43 AM, John Smith <slash5bmw@gmail.com> wrote:> Is the software on xen.org the same as xenserver?There are several projects on xen.org. Xen hypervisor is the core component. It can''t be run independently, you also need a dom0-capable OS (like Linux) to install it. XCP (Xen Cloud Platform ) is "a complete cloud infrastructure platform with a powerful management stack based on open, standards-based APIs, support for mutli-tenancy, SLA guarantees and deteailed metrics for consumption based charging" xenserver is the stable, supported version of XCP.> I was unable to download a bootable disk of xen on xen.orgDepends on what you need, you can pick one of http://www.citrix.com/English/ps2/products/feature.asp?contentID=1686939 http://www.xen.org/products/cloud_source.html http://wiki.xensource.com/xenwiki/LiveCD or even the linux distros with Xen support (like RHEL/Centos and opensuse). Note that there''s a major difference in management tools between XCP/Xenserver and the normal Linux+xen hypervisor. Try them out, and pick the one that suits your needs best. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, Feb 10, 2010 at 10:59:30PM -0500, John Smith wrote:> I did google it and it says Xen is a type 1. > [1]http://en.wikipedia.org/wiki/Hypervisor > > Please send me the link that says Xen is a type 2. > > On Wed, Feb 10, 2010 at 10:34 PM, Itamar Reis Peixoto > <[2]itamar@ispbrasil.com.br> wrote: > > On Thu, Feb 11, 2010 at 1:19 AM, John Smith <[3]slash5bmw@gmail.com> > wrote: > > What are you talking about? > > > > I want to run Type 1, bare metal virtualization. Google it. > > > > I think you are the one that does not understand the different types > of > > virtualization. if you don''t have a useful reply, please don''t reply. > > Useless replies waste my time and everyone elses time. > > > if you google you will see, xen is not type 1 > > KVM is type 1 >Wrong. Xen is type 1 baremetal hypervisor, while KVM is type 2 hosted hypervisor. See: http://www.xen.org/files/Marketing/HypervisorTypeComparison.pdf (link from: http://www.xen.org/products/xenhyp.html) -- Pasi _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> > Xen is type 1 baremetal hypervisor, while KVM is type 2 hosted hypervisor. > > See: http://www.xen.org/files/Marketing/HypervisorTypeComparison.pdf > > (link from: http://www.xen.org/products/xenhyp.html) > > -- Pasi > >xen uses kvm internally, why KVM is not type 1 ? -- ------------ Itamar Reis Peixoto e-mail/msn/google talk/sip: itamar@ispbrasil.com.br skype: itamarjp icq: 81053601 +55 11 4063 5033 +55 34 3221 8599 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Thu, Feb 11, 2010 at 6:22 PM, Itamar Reis Peixoto <itamar@ispbrasil.com.br> wrote:> xen uses kvm internally, why KVM is not type 1 ?Xen does not use KVM. Xen (when running HVM domU) and KVM both use the same CPU feature (Intel VT/AMD-V). You might be confusing KVM and HVM. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Thu, Feb 11, 2010 at 09:22:08AM -0200, Itamar Reis Peixoto wrote:> > > > Xen is type 1 baremetal hypervisor, while KVM is type 2 hosted hypervisor. > > > > See: http://www.xen.org/files/Marketing/HypervisorTypeComparison.pdf > > > > (link from: http://www.xen.org/products/xenhyp.html) > > > > -- Pasi > > > > > > xen uses kvm internally, why KVM is not type 1 ? >Xen does NOT use kvm internally. Xen existed many years before kvm. Xen uses Qemu as a device emulator, just like kvm does. -- Pasi _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Fajar, Thanks for the info. I am going to try xenserver from citrix since it can be installed without an os. I think the performance of all my VMs will perform better. Do you know if there are any bench marks comparing xenserver vs xen? I am currently running centos 5.4 with windows 7 running inside it as a VM but it''s a little sluggish. I''d like to be able to shutdown centos while running windows if I want better performance. I think xenserver should allow me to do this. I guess I will have to wipe my hard drive and re-install both centos and windows after I install xenserver. Thanks again. On Wed, Feb 10, 2010 at 11:55 PM, Fajar A. Nugraha <fajar@fajar.net> wrote:> On Thu, Feb 11, 2010 at 9:43 AM, John Smith <slash5bmw@gmail.com> wrote: > > Is the software on xen.org the same as xenserver? > > There are several projects on xen.org. > > Xen hypervisor is the core component. It can''t be run independently, > you also need a dom0-capable OS (like Linux) to install it. > > XCP (Xen Cloud Platform ) is "a complete cloud infrastructure platform > with a powerful management stack based on open, standards-based APIs, > support for mutli-tenancy, SLA guarantees and deteailed metrics for > consumption based charging" > > xenserver is the stable, supported version of XCP. > > > I was unable to download a bootable disk of xen on xen.org > > Depends on what you need, you can pick one of > http://www.citrix.com/English/ps2/products/feature.asp?contentID=1686939 > http://www.xen.org/products/cloud_source.html > > http://wiki.xensource.com/xenwiki/LiveCD > or even the linux distros with Xen support (like RHEL/Centos and opensuse). > > Note that there''s a major difference in management tools between > XCP/Xenserver and the normal Linux+xen hypervisor. Try them out, and > pick the one that suits your needs best. > > -- > Fajar >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Thu, Feb 11, 2010 at 9:02 PM, John Smith <slash5bmw@gmail.com> wrote:> Fajar, > > Thanks for the info. I am going to try xenserver from citrix since it can be > installed without an os. > I think the performance of all my VMs will perform > better.Technically XenServer/XCP comes with a minimal, optimized OS, based on Centos, as dom0. While there may be some performance improvement, I would not expect something drastic.> I am currently running centos 5.4 with windows 7 running inside it as a VM > but it''s a little sluggish.Did you install PV drivers? Xenserver has its own PV drivers. When using Centos/Xen you can use GPLPV. WIthout PV drivers, Windows disk and network I/O will be slow.> > I''d like to be able to shutdown centos while running windows if I want > better performance. I think xenserver should allow me to do this.If by "shutdown Centos" you mean shutdown the dom0, then no, it''s not possible. If your ONLY concern is Windows domU performance, I suggest you try James Harper''s GPLPV before trying anything else : http://www.meadowcourt.org/downloads/. When used with stock Centos Xen version (3.1+), I suggest you use 0.10.x version as I had some problem with 0.11.x version. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users