1
vote
2answers
59 views

Xen PV, Xen HVM and KVM

Am I correct that you can boot up any operating system with either of these virtualization types as they act as a bare metal machine and compile your own kernel? I am looking to switch over from ...
-1
votes
0answers
37 views

Different virtualization technologies without VT-d (IMMOU) [on hold]

I need access from a vm for a special ISDN pci adapter. Did anybody made PCI cards work with KVM/Virtualbox with hardware which does NOT support vt-d? As of my research shows: 1, KVM In order to ...
1
vote
3answers
323 views

hypervisor performance when running from USB

Just wondering if there is any performance impact / degradation when running from USB key I'm planning on using KVM or xen, since my servers doesn't have on board raid controller, I'm planning on ...
-1
votes
3answers
117 views

Is there any server virtualization software supports subdomains? [closed]

I installed openvz in my server but to create more virtual machines I need more than one ip address. But my service provider can only give one ip address for my server. Is there any software that ...
-4
votes
3answers
478 views

Why is Qemu Virtual CPU on my kvm guests [closed]

can some one please clarify this. I am new to kvm and created two guest instances one linux and one windows. On both Guests, CPU is showing as QEMU virtual CPU,why is it so? if kvm utilizes ...
0
votes
1answer
158 views

Best way to move one VPS from one provider to another? [closed]

I have a VPS server (Xen based) purchased from one provider, now I want to move the server to another (kvm based) What are the best way to do so? I really don't want to re-install the whole system, ...
0
votes
0answers
50 views

enabling modules for a kernel

I have a KVM/XEN VPS and would like to enable the following modules: ipt_LOG ipt_multiport ipt_state ipt_limit ipt_recent ipt_owner iptable_nat tun/tap iptable_nat ipt_MASQUERADE ipt_POSTROUTING PPTP ...
1
vote
1answer
896 views

How to limit excessive CPU usage from guest OS in KVM

On Xen it is easy as we have CreditScheduler [1], so on a machine with each guest OS sharing only portion of CPU, e.g. 6 guests running on top of a dual core CPU, excessive CPU usage is prohibited. ...
1
vote
0answers
90 views

How do VM gets ram from Host machine in virtualization? [closed]

In Virtualization how do all the vm gets RAM? Does the Hypervisor allocate a portion of its RAM to each VM so that they can simple use it as its own RAM?lets say if a host machine has 8 GB RAM and ...
0
votes
3answers
1k views

How to makesure VM is in Para virtualization mode on XEN?

I am having a server running XEN,with ubuntu 12.04 as Domain 0. Intel VT is turned on by default and i dont want to run any Windows OS as VM. So 1. how can i makesure that all the created VM will ...
1
vote
1answer
162 views

Is it possible to run Windows as a Xen VM without VT, using Qemu-dm?

Is it possible to run windows as a virtual machine under Xen using qemu-dm? If so, how can it be done? Since Xen without VT technology supports only para-virtualization, can qemu-dm, the emulator ...
-1
votes
2answers
5k views

How to decide between Xen or KVM? [closed]

I am going to set up a high availability hosting server (load balancer, mysql, apache, php, memcached, apc, possibly a distributed/network file system of some kind) with two nodes. I want to isolate ...
2
votes
2answers
196 views

Why do KVM needs Hardware Assisted support to install even Linux based OS

For XEN we dont need Hardware Assisted support for running linux os. But why do we need that for KVM for running even linux based os. Can Kvm be configured to support para virtualization. Edit: ...
-3
votes
2answers
232 views

is it possible to load virtual machine to memory like that of a live cd

Can we create and run a virtual machine that uses RAM only or minimized HDD usage. That is same as the working concept as that of live CD. I know It is possible,but still confused,whether it can ...
2
votes
3answers
2k views

How can I run Rackspace images locally?

As the title says, I regularly download my Rackspace images for backup of my VPS, however I'm wondering if it's possible to run them locally on KVM (for example) so I can run tests on my application ...
0
votes
1answer
396 views

Can't do XEN pci passthrough of onboard Intel HDA Sound Card (but works in KVM) [closed]

I'm trying to pass an onboard SBx00 Azalia (Itel HDA) through to a XEN windows guest, but it doesn't seem to be working. The device appears in the device manager as High Definition Audio Controller, ...
3
votes
2answers
259 views

Hardening Virtual Machine

I have a CentOS based product I'm looking to distribute it as a virtual machine (VMWare, XEN and KVM) and I have been lately assessing the steps needed to protect the VM. The VM's data shouldn't be ...
0
votes
1answer
680 views

Error while creating VM using virt-manager on Xen

After a great struggle I got my XEN installed now I am using virt-manager and trying to create a VM. Since my H/W doesnt support full Virtualization using the Para Virtualization installation over ...
1
vote
1answer
125 views

What free (as in beer) solution should I use on a remote (no console access) server? [closed]

I currently have a 1U server in a data center. I run my (mostly personal) DNS, mail, and webserver on it. It will be time to replace/refresh it soon. When it is time for the new machine I am ...
-2
votes
2answers
161 views

Turning physical linux server into several virtual servers [closed]

I'd like to create several virtual servers (all running linux) on my physical server. All of them will be used as headless servers - ie. they'd be the equivalent of an EC2 instance but running on my ...
0
votes
1answer
1k views

AMD Fusion GPU passthrough to KVM or Xen

Has anyone successfully gotten a passthrough working with the GPU portion of AMD's Fusion APUs (the E-350 is my target) on top of a Linux hypervisor? IE, I want to dedicate the GPU to one VM only, ...
-1
votes
2answers
249 views

Free virtualization system with clone vm feature

I need virtualization system, based on kvm or Xen with Web interface, or windows gui, which support cloning vms. One more point is that I can not install it from iso (server is located in hetzner). ...
3
votes
2answers
176 views

What is a good way to develop images or templates that can be used on Xen, KVM and EC2?

I want to make images to do simple network services (e.g. serve a web app, run a memcached, or whatever). It would be really nice to develop an image once, test locally, and then be able to deploy it ...
4
votes
2answers
1k views

Advice on most fitting choice of virtualization platform: Xen | OpenVZ | KVM | other? What suits the purpose best?

I am aware of the multitude of virtualization threads here but they all seem to be oldish and i'd like to have a brand new one ready for 2012. I'm currently evaluating Xen, OpenVZ and KVM for ...
2
votes
1answer
367 views

Equivalent of xen capping in kvm

I have been using xen hypervisor. I use the credit scheduler and make use of capping in credit scheduler. Now I am migrating to KVM . Is there any good equivalent of that VM capping in kvm ? Any help ...
5
votes
2answers
1k views

KVM to Xen migration

I've recently been appointed to create some VMs for production use, and went gung ho into making a KVM based VM instead of finding out what our production server uses. I've only recently found out ...
1
vote
2answers
518 views

Centos 6.0 + Xen

So now that Xen is no more in Centos' repositories, should I still use it or migrate to KVM? I have to say that I am not very inspired by KVM at the moment and I've gotten pretty familiar with XEN ...
0
votes
1answer
379 views

KVM VM CPU prioritization on CentOS 5.5

I'm transitioning from Xen 3.4 to KVM on CentOS 5.5. I need to assign CPU priorities to VMs, to ensure that one VM (vmA) always receives priority over another VM (vmB). In Xen I could assign a ...
2
votes
2answers
1k views

Can I give a virtual machine a unique ID which is accessible from inside the VM?

I want to be able uniquely identify my virtual machines from inside the virtual machine. The problem is that in my setup I cannot use the MAC address for that. Is it possible to configure another ...
2
votes
3answers
883 views

clustered file system choice for KVM/XEN in Fibre Channel Environment

Gents, what would you recommend for production use in a FC environment, where live migration is a must? Which clustered file system should we use? OCFS2? Would you still need drbd? Thanks!
3
votes
3answers
901 views

Virtualisation: Running KVM, XEN or … on an Integrity (ia64) server (with x86_64 guests)

We have a spare Integrity blade (2x Tukwila quad-core + 16Gb RAM) laying around which I would like to use has a Virtual Host for a couple of Linux VMs. I am having some concerns finding the best ...
4
votes
3answers
2k views

Is KVM stable enough for production use in 2011?

We are planning to virtualize the existing infrastructure by an open source virtualization solution. KVM and Xen are on the final list. Big cloud players are still using Xen, and we found that KVM is ...
1
vote
1answer
2k views

Xen to KVM windows guest migration

I'm trying to work out how to migrate a Xen based windows server guest to a KVM host. I've grabbed a copy of the Xen image and run an image conversion on it. kvm-img convert -O raw ...
2
votes
4answers
876 views

Virtal Machine Managment Control Panel - Xen/KVM [closed]

We are looking for an open-source or low cost virtual machine management control panel. We require it to be able to manage up to dozens of hypervisors and thousands of virtual machines. It should be ...
1
vote
2answers
242 views

xen to kvm migration

i've just migrated some xen vms to kvm. so far everything is working fine. except for one little thing: when i start virtual-manager and looking at the vm's display, there is no login: prompt. i ...
1
vote
1answer
137 views

Virtualization queries

I am virtualization newbie. Please advise on these questions. Please note using a commercial VM software like Citrix or VMware is not a choice for me. I have at my disposal couple 2x 4 core servers ...
1
vote
3answers
3k views

KVM vs Xen vs Virtual box — Server setup, which is most performant?

Have read quite a few posts/articles on the web, including several QnA threads here at serverfault. However, I am quite confounded by the divergence of opinion. Given that much of what was share was ...
25
votes
2answers
36k views

Difference between Xen PV, Xen KVM and HVM?

I know that Xen is usually better than OpenVZ as the provider cannot oversell in Xen. However, what is the difference between Xen PV, Xen KVM and HVM (I was going through this provider's specs? Which ...
1
vote
2answers
1k views

Migration from Xen to KVM

I have Xen domU virtual machines running Windows. Each of them are installed in their own LVM logical volumes. I want to migrate them to another server with KVM on lvm to. How can I do this faster ...
0
votes
3answers
6k views

Enable Intel-VT inside of VMware Workstation

I'm testing Nova Compute from OpenStack project inside of a VMware Workstation v7 virtual machine, and I get this error: libvirtError: internal error no supported architecture for os type 'hvm' ...
7
votes
2answers
2k views

Xen vs KVM: Which will have likely better support (read:bugfixes) in the future?

I don't care about GUI or tools, but I do care about stability and performance. If I'm running a FreeBSD firewall and a Opensolaris file server as guests, will I get better stability or performance ...
6
votes
2answers
3k views

use LXC under heavier virtualization (Xen, KVM,Hyper-V,VMVare)

Is it possible to use LXC under heavier virtualization (Xen DomU,KVM,Hyper-V,VMVare) ? I would like to use it as security (isolation) tool, the ability to limit resource consumption is not priority ...
3
votes
4answers
1k views

The state of XEN vs KVM for inhouse virtual server farm like live farm

so we have a life server Farm, conventional stuff not virtualized. This is to stay that way for the time beeing. The servers we are talking about are: Loadbalancer, DB master, DB Slaves (2x), ...
0
votes
1answer
937 views

Converting raw image to LVM. Won't mount afterwards

According to this post, it should be okay, to use dd to convert a raw Xen image to LVM. What I have done dd if=/vm.img of=/dev/vg00/vm I can mount vm.img with mount -o loop vm.img /root/tmp. It ...
0
votes
1answer
1k views

How do I migrate guests running on Xen to KVM?

Is it possible to migrate some Xen DomU guests on an Debian Etch Dom0 running Xen 3.2.1? The guests are various versions of Ubuntu 8.04+ or Debian. The new machine is Ubuntu 10.04 running kvm.
6
votes
4answers
926 views

Alternatives to Xen for virtualization setup

I currently use Xen in production to run a number of Ubuntu VMs (Intrepid/Jaunty). I've got another server which I'd like to set up as a VM host to run more guest OSes, and am looking for the best ...
1
vote
3answers
968 views

Single machine & KVM-only Eucalyptus installation?

I was wondering if there's an easy way to install Eucalyptus on a single VT-enabled machine (all Front End, CC, NC..), without installing XEN along with it's specific kernel and dependencies: ...
1
vote
3answers
195 views

Big MTUs under some VM system

I'm pretty sure we aren't the only site using jumbo frames (~9k), right? Well, for those of you that are doing it as well, what are you doing about virtualization? Namely: Xen doesn't support ...
2
votes
2answers
4k views

Is it possible to a VM inside a VM (e.g., KVM on Vmware)? [duplicate]

Possible Duplicate: Is it possible to setup a virtual machine inside another virtual machine I'd like to do some development on Eucalyptus, an open source project which provides an Amazon ...
3
votes
4answers
2k views

Xen or KVM? Please help me decide and implement the one which is better

I have been doing research for implementing virtualization for a server running 3 guests - two linux based and one windows. After trying my hands on Xenserver, I am impressed with the architecture and ...