Xen is a hypervisor based virtualization. It supports x86, AMD64, IA64, ARM and other CPU types, and Linux, Windows, Solaris and *BSD guest operating systems.

learn more… | top users | synonyms

4
votes
2answers
4k views

How can I obtain a new XenServer license using only the command line?

Many sites explain how to renew the license using XenCenter. Is there a way to do this directly from the console?
0
votes
2answers
3k views

Mounting filesystem of VM from dom0 in XEN

I have XEN 4.0.x.x and Cent os 5.5 There is an .image file of each VM stored on dom0 in /var/lib/xen/images directory. Is it a some block on the hard disk which I can mount this file from dom0 and ...
0
votes
1answer
2k views

xm console command is not working in XEN

I have XEN 4.0.x.x rpm with CENT OS. I have set it up and have many VMs on it. But problem is when I execute 'xm console ' command from dom0, command just hangs dom0 and some 'y' comes up in next line ...
1
vote
1answer
152 views

Webserver: NAS vs DAS

Currently we have 1 server that runs a Xen 4.0 kernel (debian squeeze). On this server we run several virtual machines (2 webservers, 1 mailserver, samba server, database server) (HDD is configured in ...
0
votes
3answers
972 views

Is there option to provide IP address while cloning a VM itself in XEN

I use XEN virtualization platform. I have configured its networking in xenbr0 mode. I have set up one base VM and I am cloning it to create new VMs by using virt-clone command. My question is there ...
0
votes
1answer
710 views

Error while starting 9th Virtual machine installed on XEN

I have a blade server of HP proliant with 64 Gb of RAM and 1TB hard-disk. I installed Cent OS 5.6 with XEN enabled on it. I used xenbr0(xenbridge) mode and not virbr0 mode for configuring my ...
0
votes
2answers
376 views

xen host with 48gb ram for 32bit guests

I have a Linux rhel xen host which will be running many 32 bit guests. (The guests have to be 32bit). The server has 48gb of ram, and currently it runs a xen kernel but this only sees 16gb of ram on ...
-1
votes
1answer
3k views

Anybody can tell me why isn't my EC2 AMI booting?

I'm trying to make my own EC2 AMI. I used debootstrap to install the packages onto a partition, copied the kernel modules from the running AMI (Amazon linux) and rebooted. This is what the console ...
1
vote
1answer
373 views

virtio /proc/net/dev

we are doing some VM (citrix-xen) / real machine benchmarks at university and ran accross a strange behavior. we used netperf's stream test to meassure the performance between the two machines. both ...
0
votes
1answer
2k views

Systemrescueconsole after install xenserver tools | How to use the Recovery Cosnole

I have trouble with Windows Server 2008 R2, after updating XenServer tools the server starts in Recovery Console from Drive X, on Drive C is a system reserved partition and on Drive d there is the ...
0
votes
1answer
717 views

No Gigabit NIC card in Xen 3.0 CentOS 5.6

I have a CentOS 5.6 linux host running two Windows Server 2008 R2 VMs in Xen. The problem I'm having is the NIC card in any VM shows up as 100Mbps and not 1000Mbps. I would like to be able to give the ...
7
votes
2answers
2k 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 ...
0
votes
2answers
638 views

centos 5.7 domu install problem on centos 5.6 dom0

i'm running centos 5.6 as dom0 and want to install centos 5.7 as domu but every time i start installation the process stucks on "Starting install process.This may take several minutes..." I install ...
2
votes
3answers
717 views

Managing the Xen Cloud Platform

Could someone recommend a web-based tool for managing XCP? I have 6-7 x64 boxes that I would build into a small private cloud for a group of developers.
-2
votes
2answers
147 views

Server Virtualization Platform [closed]

I am running a small (really small) business and would like to virtualize a server. Historically I have run VirtualBox for client work, but I feel like there must be a "server" alternative that runs ...
1
vote
2answers
470 views

Where has the xen.git git repository for Xen gone since the Kernel.org attack?

Has it been put up anywhere else for now? I know the Kernel has been put up on Github for now. The git url that we were using was, git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
0
votes
1answer
84 views

VPS displaying funny characters instead of special characters

Pretty sure it doesn't matter but I've had about a dozen OpenVz vps' and never seen this until I bought a Xen server for the first time. Special characters like « get all funky and look like this: ...
0
votes
2answers
526 views

no network or disk devices in Arch Linux Xen guest during installation

I'm trying to install Arch Linux under Xen as domU (Guest) from Arch Linux official 2011.08 x64 Core iso image. My web hosting offers a SolusVM control panel with ability to install custom ISOs, so I ...
2
votes
1answer
268 views

Location of vm data on xen center

I can't find the vm data (metadata files, disk images) mounted anywhere on the xenserver server. Where is it located, and how can I reach it from dom0?
1
vote
1answer
417 views

ArchLinux under Xen fails to see root fs after kernel upgrade to Linux-3.0

I bought a VPS but the hosting company doesn't have a prebuilt image for Arch Linux x64, so I have to install from ISO using VNC in SolusVM. The installation works fine, the box (Xen Guest) is ...
1
vote
3answers
3k views

Centos Xen resizing DomU partition and volume group

I have a setup like so: Dom0 LV | DomU Physical Disk | | XVDA1 XVDA2 (/boot) (DomU PV) | VolGroup00 (DomU VG) ...
4
votes
2answers
546 views

Can I force the Linux kernel to use a specific vga adapter for output when booting?

Suppose I have a Linux Xen machine with multiple graphics adapters + an onboard graphics adaptor. Suppose they are all PCIe adapters. I am guessing that the Linux kernel decides to use whichever ...
0
votes
1answer
221 views

My xen installation is rebooting randomly. How do I track the error?

I have a test xen installation that is using the gfx_passthrough option. It appears to run fine. However, after about 15minutes the whole xen installation reboots for no obvious reason. I don't see ...
1
vote
2answers
527 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
293 views

How can I create a vmware disk with XEN?

I found that in XEN I can use vmware-disk images. But can I actually create such a disk with pure XEN-means? I want to create a server with XEN and move the corresponding disk later to VMWARE (in a ...
1
vote
2answers
2k views

iptables rule to block incoming/outgoing traffic to a Xen container

I'm trying to setup IPTABLES on my xen host server that will block incoming and/or outgoing access to a xen client on the same machine. Specifically, I need to block outgoing port 25 traffic and ...
1
vote
4answers
594 views

Transient network dropout for Xen DomU's

We've got a CentOS server running a cluster of virtuals. Occasionally the cluster's internal network drops out for a minute or so ... and then comes back. The problem is somehow related to the ...
0
votes
1answer
227 views

Citrix and Ubuntu Server / Ubuntu Clients for VDI

does anyone have any experience running ubuntu as a hosted desktop using XenServer have any reasons why I should not pursue this option?
1
vote
2answers
884 views

Make date change persistent after reboot of xen VM with CentOS

I would like to permanently change date on a xen VM running CentOS 5.5 I've set xen/independent_wallclock = 1 in /etc/sysctl.conf (and /proc/), but after reboot date is reset. I would like it to be ...
1
vote
1answer
292 views

Nvidia Tesla XEN PCIpassthrough

has anyone managed/tried to pci passthrough an nvidia tesla card to a xen domU?
1
vote
3answers
2k views

Best OS for Xen Dom0 - have had problems with CentOS and OpenSUSE for Xen

I used the No Starch Press "Book of Xen" as a starting point to learn more about Xen and begin a dom0 installation as described therein. Through failed installations and subsequent searches I learned ...
1
vote
2answers
645 views

xenstore-read: undefined symbol: xs_open

I have successfully compiled the xen hypervisor on Ubuntu 11.04. However, I can't get it to run properly. the xencommons init script shows Starting ...
0
votes
1answer
283 views

Linux Kernel 3.0 & Xen

According to this article: http://blog.xen.org/index.php/2011/06/02/xen-celebrates-full-dom0-and-domu-support-in-linux-3-0/ Xen is now fully supported in the Linux kernel without patches. What is ...
0
votes
2answers
98 views

Why is my Xen DomU kernel using more power/heat when there is no work compared to the default kernel?

I have a special server that is going to be used for graphics processing. It has multiple ATI Radeon GPU cards inside it. Now when I install Ubuntu server straight from CD it runs relatively cool. ...
0
votes
2answers
5k views

Can't create Windows 7 DomU in Xen hypervisor 4.1.1 on Ubuntu natty

I am trying to set up Xen on a brand new AMD Phenom II X6 1090T. I have ubuntu natty installed. I've managed to get Xen Dom0 running now with kernel 2.6.39.3 However when running: xm create ...
0
votes
2answers
254 views

Xen kernel will not boot after upgrade to Ubuntu 10.04

We upgraded our Ubuntu with Xen to 10.04 after the upgrade it will boot into the regular ubuntu, however it will not boot into the Xen (3.3) kernel. Our output : What we tried : increase ...
0
votes
2answers
227 views

Multiple XEN nodes with the same external ip?

I have a server with debian that uses the xen kernel. I've successfully created and started 2 xen nodes, lets call them xen1.domain.com and xen2.domain.com. They both have their own internal ip and ...
0
votes
1answer
2k views

xenserver: installation via kickstart file after adding storage

export MGUID=`xe vm-install template=centos6 new-name-label="centos 6 test install 3"` xe vm-disk-add disk-size=11GiB vm=$MGUID sr-uuid=$STORAGE_UID device=0 xe vm-param-set uuid="$MGUID" ...
2
votes
1answer
234 views

inonice not working properly in xen dom0

I have a Xen Dom0 (3.2) with a bunch of domUs (paravirt). DomU VBDs are on local LVM volumes. Now I want to get backups of the LVM volumes using snapshots. I use rsync ioniced to idle (ionice -c3). I ...
1
vote
2answers
1k views

Xen domU shared drive alternative to NFS?

We have a Xen server where the dom0 acts as both vm host and storage host. Nothing special about the server, the storage is an internal RAID array. No failover partner or anything. Each of the ...
0
votes
1answer
299 views

Adding an ssh key to a Xen VM

I recently needed to restart a Xen host box, and now I can no longer ssh into the VMs. I was able to before, but now I get Permission denied (publickey). I am not too experienced with Xen, is there ...
1
vote
1answer
491 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
4answers
9k views

Citrix XenServer: how to add RAM to a guest VM without XenCenter?

Is it possible to add RAM to a guest VM in without using XenCenter, but from the host machine console or a remote machine?
7
votes
3answers
2k views

Xen connect to dom0 with vnc?

Is there are a way to connect to dom0 using VNC without running X? I don't want an X server, I just want to see what is on the console. EDIT: Adding some background, since people seem to be really ...
1
vote
1answer
272 views

Is it possible to allow multiple VNC connections to a DomU?

Is there a way to enable multiple vnc clients to connect to the same DomU using the Xen 4.0 built-in vnc server?
0
votes
1answer
314 views

Can I reset a VNC connection to a DomU?

VNC to my DomU VMs works great. The only problem is that I can only have one vnc client at a time connected, and if someone leaves a session logged in, or if I am disconnected suddenly, I have to wait ...
2
votes
2answers
2k 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
1answer
850 views

Compiling kernel from source (for Xen), do I use plain kernel?

My VPS host uses Xen, and instead of using its custom kernels I could use my own (with pv-grub), the sample kernel of which I had installed to test this was is the following, I am running Debian 6 ...
1
vote
2answers
473 views

Linux Kernel Oops - source unknown

hopefully someone can help interpret what is going on here: [ 2081.280253] BUG: unable to handle kernel paging request at ffff8801ad287000 [ 2081.280262] IP: [<ffffffff8000f549>] ...
1
vote
1answer
147 views

Specify the user for Xen's xm console?

I have a situation where I need xm console <domID> to drop into a specific user in a CentOS PV VM, say UserB. UserA was the first user created in the VM, and whenever I xm console <domID> ...