XEN is a hypervisor based virtualization technique.

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Create a CentOS Guest img over Ubuntu

I want to create a basic CentOS 5.8 system from scratch. for now i build my own img for Ubuntu Guest (debootstrap), my host is a Ubuntu 12.04.1LTS but I don't know how to make for a CentOS, is ...
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1answer
179 views

XEN stop all virtual machine when shutdown

I am using XEN on CentOS 6.5 64 I want a way to stop all virtual machine when XEN server shutdown I build service call in stop xm shutdown -a but not working #!/bin/bash # chkconfig: 2345 95 20 # ...
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1answer
211 views

Creating a private network for internal VMs

I am trying to configure a private network for use with my Xen VMs, in addition to the public network in use by another of the VMs (VM1, which has its own public IP). So far, I have the public side ...
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1answer
567 views

Booting from ISO in Xen Paravirtualized Environment

Specifically, Citrix XenServer 5.6. I can map the an ISO from a Storage Repository with no issues and mount it inside the OS but I can't boot from the DVD drive without converting it to HVM, which ...
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1answer
546 views

Fedora 14 Xen virtual machine does not detect network

I'm trying to create a para-virt Fedora 14 Xen vm on a host running CentOS 5.5. The VM appears to initially install correctly (the installer finds eth0 and can access the installation media). But when ...
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1answer
653 views

libvirt daemon doesn't start on Gentoo

I'm trying to use Xen with virt-manager on Gentoo system and I have some troubles with libvirt daemon. When it starts: Starting libvirtd ... /usr/sbin/libvirtd: error: Unable to initialize ...
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1answer
133 views

Scrambled Xen Console on dom0

I installed Xen using the recommended procedure on Ubuntu's site using motherboard Supermicro X7SBL-LN2 and Ubuntu 13.04 amd64. After the installing it and rebooting my console looks like this: ...
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1answer
20 views

Xen boots old kernel after upgrading

I've upgraded linux kernel from 3.2.0 to 3.16.3. Now Xen boots the old one (3.2.0) instead of 3.16.3. Is there any way to force Xen to find that a newer linux kernel version is available? Or am I ...
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1answer
141 views

Grub not Recognizing XEN Kernel on Boot

We are able to successfully install and boot to a XEN kernel on 5 of our 7 eucalyptus node controllers. The last two are having the same problems despite running an identical installation process. ...
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1answer
56 views

Global IP on DomU in XEN, using Ubuntu

Can a DomU have a global IP in Xen? I see that DomU's are connected to Dom0 and then physical ethernet using xenbridges, so is it technically possible in Xen to assign global IPs to DomU so it can be ...
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1answer
238 views

xe sr-create type=ext results in backend failure

I'm trying to create an ext based storage repository: xe sr-create content-type="local SR" \ host-uuid=c7030a1f-15e3-7e7d-2932-b30200a15917 type=ext \ device-config-device=/dev/sdb1 \ ...
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1answer
146 views

Xen crashes when loading X

I installed debian-7.1.0-i386-kde then apt-get install various Xen stuff. After updating Grub I found it boots up using Xen however at the point where it tries to draw my desktop (KDE) I get a bunch ...
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1answer
102 views

Crash analysis and 4 levels of page table

I am having xen 3.4.2 running with 15 vm (pv+hvm) on a host with 256 Gb RAM and 96 core CPU. But recently my host crashed on debug log its showing translating ffff83183fcb0000 with CR3 100ae42000 ...
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0answers
51 views

Prevent dom0 IGP from being VGA-passed-through to HVM host with Xen4.4

Usually people want to VGA-passthrough their IGP, and there are a lot of documentation out there. However I don't want my IGP passed-through to the domU as it serves my dom0, only my secondary card ...
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0answers
1k views

PCI passthrough with Xen

I am trying to run Windows XP in a Xen DomU virtual machine with a PCIe device, for which there are no Linux drivers, being passed through from a Debian Squeeze Dom0. My hardware supports ...
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0answers
100 views

Limit CPU cycles inside of Xen

I'd like to run some minimum-expectation benchmarks on EC2, but I'm having an issue of high variability in my output data. Specifically, they keep giving me more CPU than I'm minimally entitled to, ...
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0answers
510 views

Xen is unable to use URL's to install CentOS

I can't seem to use URL's when using the netinstall for CentOS, I'm installing CentOS on a Xen VPS. I keep getting this error in the terminal window, when I use the URL: ...
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0answers
231 views

XEN Bootloader or Kernel error bootloader isn't executable / cannot locate kernel when using XM create

I am currently using Xen for installing VM guests however whenever we run xm create -c /etc/xen/ks.test.cfg we get; Using config file "/etc/xen/ks.test.cfg". Error: Bootloader isn't executable ...
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0answers
33 views

How to regenerate an initramfs with ash built-in shell?

I foolishly edited my /etc/mkinitcpio.conf and now my computer won't boot. It drops down to (initramfs). It claims it cannot find the root device. However, cat /proc/cmdline shows the correct UUID of ...
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0answers
24 views

zpool mount issues on boot

Looking for help with errors I'm encountering with ZFS. Firstly, the main issue is that I can't get my zpool to mount at boot, but there are obviously other problems I would like to sort out (see ...
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0answers
553 views

Setting up VGA Passthrough on Ubuntu with KVM : error no iommu_group for device qemu-system-x86_64

I'm trying to configure the VGA Passthrough on the Debian SID because I want to use Debian on the first monitor and Windows 7/8 on the other one. I have tried with XEN and with KVM but in both case I ...
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0answers
64 views

Citrix XenServer, all packages appear to be 32bit

I'm hoping to use Citrix XenServer for a group of 4/5 machines. One of these machines has 18TB of storage (after RAID5 is taken into account). I've installed XenServer and mkfs.ext3 is the only ...
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0answers
89 views

High ping/latency on Xen box

I am having problems with my Xen box. Once in a while it has too high ping/latency and it is very annoying. It does not matter if I am pinging server from outer network (LAN0) or inner network ...
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0answers
106 views

benchmarking ftp in 3 methods of virtualization

My Bachelor Final Project is about benchmarking visualization methods with ftp, web and mysql services: installing Debian on xen (para-visualization) kvm and lxc with equal resources config (equal ...
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0answers
628 views

Use dd to backup disk image within an OpenVZ container

I want to use dd to backup the disk of an OpenVZ VPS in addition to traditional cold tar backups. Because I may need to migrate to a different VPS provider. From end user point of view, OpenVZ ...
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41 views

Error when trying to mount Xen LVM2 volumes

I have a hard drive which used to be part of a server running Citrix XenServer 5.6.100 SP2 with a Software RAID1 (I only have one of both hard drives). This hard drive is now physically attached to a ...
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22 views

Need commands to fetch Guest VM OS version from Xen and KVM

I m looking for the commands that can be executed to fetch the OS Version of the VMs running on the below Hypervisors. Xen (Not the citrix Xen server, but the Xen Sever hosted on a ubuntu Machine) ...
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35 views

Xen Domain0 cannot access internet while DomainU can

I am Using all this setup on VirtualBox VM with network interface NATing with original Windows machine. I have installed Xen on Ubuntu 12.04. From Dom0, I could access internet before I installed ...
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258 views

Change screen resolution of Xenserver Console for a CentOS VM

I need to increase screen resolution to 1024x800 for my XEN console. I tried to place vga=791 at the end of kernel line the file /boot/grub/grub.conf but it seems that most of the boot arguments ...
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0answers
70 views

With XenServer, how can I give a PV guest a display?

I have Xen running through XenServer 6.2. I created a PV Debian 7 guest using the built-in template, and chose to install the Gnome desktop environment. However, the guest only has a text console by ...
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Tuning a CentOS VM running on an MDRAID-based XenServer storage repository

I've run out of ideas for tuning disk write speeds on a handful of CentOS VMs running on a lab XenServer 6.2 host. Running under the free license (so vendor support not a concern), the lab host is a ...
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90 views

Paravirtualized disk for Xen using libvirt?

I'm trying to use libvirt to create a paravirtualized xen domain. Here's the xml file that I'm passing to virsh --connect xen:/// define: <domain type='xen'> <name>xenguest</name> ...
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0answers
123 views

Xen VNC - VGABIOS Rom Missing

I've had a Xen server with VNC running successfully for almost a year now. However, recently, when I tried to connect to an HVM domain with VNC, it displays a blank screen. When I looked in the QEMU ...
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0answers
33 views

Xen HW virtualization on Power architecture?

https://en.wikipedia.org/wiki/Xen#Hardware-assisted_virtualization.2C_allowing_for_unmodified_guests The wikipedia page says Xen has HW virtualization for Intel and AMD CPU's. Q: Does Xen supports ...