XEN is a hypervisor based virtualization technique.

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Xen DomU PV - how do I get graphics?

Both Dom0 and DomU are Arch linux. Because Xorg :0 -configure results in video card not found as I'm in a DomU, I created a xorg config file. /etc/X11/xorg.conf.d/10-monitor.conf Section "Monitor" ...
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How do I boot into Ubuntu 12.10 or higher WITHOUT using grub2, but just grub?

I have a machine I SSH into on a Rackspace virtual XEN environment originally built as Ubuntu 11.04, but I have since upgraded to 12.04 with a grub 1.99 on menu.lst, not a grub2. The ...
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Sharing memory between two virtual machines?

I have installed two virtual machines on Xen hypervisor and want to configure communication between them. I want to send data from one virtual machine to the other one. How can I share memory between ...
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How to extend a windows volume on xen xm virtual server

I have inherited a Xen virtual server running debian 2.6.32. I have two windows hosts and one of them needs more disk space. I am thinking I should be able to rob a few GB from one of the windows ...
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53 views

Should I use KVM or Xen ? What are the main differences? [closed]

I've spent a few hours trying to understand the differences between KVM and Xen without much succes. So both are Type 1 Hypervisors with comparable performances (source) and I don't understand what ...
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Running QEMU inside XEN virtual machine

Is it possible to run QEMU inside XEN virtual machine? I tried to enable the XEN nested virtualization for with following options to virtual machine configuration file in /etc/xen/vm1.cfg: hap=1 ...
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How can I trigger scripts on a virtual machine when I insert a CD or DVD in the host?

I have a PC running XenServer 6.2.0 It hosts, among others, an Ubuntu VM that I configured to rip and copy my CD/DVD collection to the NAS hosting my media collection. What I would like it to do on ...
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Installing Xorg on ASRock AM1H-ITX (Xen DomU Arch-Linux LXQT): startx and no screens

Dom0: Arch Linux DomU: Arch Linux The problem seems to be that the DomU can't find the Video Card. inxi -F (DomU) System: Host: ArkOS_Dev Kernel: 4.2.5-1-ARCH x86_64 (64 bit) Console: tty 0 ...
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33 views

How to debug Xen dom0 sluggishness?

Some months ago I ran an helloworld MirageOS app on Xen on my machine without any problem, now I wanted to get back into using Xen, but I have some issues. Plenty of things changed: The previous ...
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Networking issues after XEN guest migration

Yesterday, after mirgation of my CentOS 5.3 VPS from ISP to my own local XEN, I was a little bit complicated: after changing all network settings inside: /etc/sysconfig/network-scripts/ifcfg-eth0 ...
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xl create problem with Arch Linux, Xen, DomU LVM

This is still my first time setting up a DomU. With Dom0 being Arch Linux and DomU as well. I recently figured out that I would need an LVM for my setup as I want at least two partitions (root + ...
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how can I create filesystem on the additional drive

I have a dedicated server with Xen virtualization and I have many VPSs on it I requested from datacenter(Hetzner) to add another HDD but now how can I setup the additional HDD to use it for creating ...
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49 views

Boot problem with grub; Arch Linux, Xen, DomU

Inside my Dom0 My error log: sudo xl create /etc/xen/arkOS-Dev_PV.cfg /var/log/xen/bootloader.1.log pyGRUB version 0.6 ...
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142 views

Boot problem with grub; Arch Linux, Xen, Dom0

After installing Arch I installed grub with these commands: pacman -S grub grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=grub --recheck grub-mkconfig -o /boot/grub/grub.cfg ...
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Where to find information about tests from Phoronix test suite?

Phoronix Test Suite is a linux benchmarking tool made of tests and suites of tests. To print all available test phoronix-test-suite list-available-tests To print all available suites ...
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Is the running Xen Suse OS just Dom0?

When I select "Xen" option during Suse boot which has installed "Xen" tools: Is the running OS just Dom0?
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137 views

Xen error: “xl list” complains about libxl

After having installed Xen on Arch Linux, I cannot issue any xl commands, getting this error: xc: error: Could not obtain handle on privileged command interface (2 = No such file or directory): ...
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bridge does now work in Xen-4.5.1 on centos

I installed Xen-4.5.1 on CentOS6.5 and create a bridge "xenbr0" and modified ifcfg-eth0 at the same time. ifconfig eth0 Link encap:Ethernet HWaddr 00:1E:67:12:83:B4 inet6 addr: ...
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71 views

How to start xend service automatically on boot?

I am trying to auto-start xend and xendomain service automatically on boot as soon as I log into XEN-dom0 (on Ubuntu server 12.04 x64) so that when I type : sudo xm list the hypervisor lists me all ...
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87 views

Dump XEN guest memory image

I am new into memory forensics thing and I am trying to dump a memory image from a XEN guest (Ubuntu 12.04 x64 - domU) in order to analyze it on dom0 (Ubuntu server 12.04 x64) with volatility . For ...
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How to run Windows with GPU virtualization?

A year ago I switched to Ubuntu for my primary OS, which has worked out just fine. Every now and then I want to play computer games and while using Wine often works, I can't get all of the games that ...
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204 views

CentOS 6.7: cannot disable netfilter for Xen bridge

Following sysctl.conf settings at Xen host does not work: net.bridge.bridge-nf-call-arptables = 0 net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 # sysctl -p ... ...
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100 views

Is it possible to read PVclock from user space?

Is it possible to read clocksource xen or kvmclock using some user space tool? Referring to /sys/devices/system/clocksource/clocksource0/current_clocksource. Reading the actual value of the pvclock. ...
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26 views

Old Xen Installation Unable to be Formatted

I recently tried to format a disk that had an old Ubuntu 14.04 partition and a Xen Swap Disk partition. I am currently running the Ubuntu Live CD and trying to access my partitions on the drive for ...
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124 views

How to deallocate extents of physical volume? lvm, encrypted

I just install Debian 8.1. I allocated almost all disk 300 GiB to encrypted partition and a little bit for boot. I want to make smaller 50GiB encrypted physical volume and install different xen OS to ...
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Is it possible to install Xen on a computer (processor supports virtualization) alongside Ubuntu and Windows?

The computer currently triple boots Ubuntu and a couple of Windows versions. Now I want to add Xen into the mix. Would it work if I simply made a new partition for Xen, or does it need to take over ...
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149 views

Systemd will not start xenstored, xenconsoled, and xendomains

I am running a Gentoo installation and recently moved to systemd and whenever I boot with Xen, I cannot issue any xl commands, getting this error: xc: error: Could not obtain handle on privileged ...
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run FreeBSD 10 (as guest) under Xen on Linux

I have my Linux/Debian/Sid amd64 (with i7 3770K, 16Gb RAM, 1 SSD + 2 hard disks) PC with xen (notably I have installed a package xen-linux-system-amd64), so sudo xen list Name ...
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Is there any documentation on network booting Xen?

I can find lots of discussion on netbooting guest operating systems under Xen, but I am having trouble finding info on how to netboot xen itself (dom0 too would be nice)
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How to route the traffic from machine 1 to machine 3 via machine 2 and vice versa, on the same subnet?

I've a Citrix Xenserver where I'm running VMs. I have three VMs there, and they have 2 NICs each: eth0 is my company LAN which I'm using for management, and eth1 is a "single-server private network" ...
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454 views

Xen libvirt access for non-root user

I've installed Xen and libvirt on a CentOS 6.6 machine. All the tools (virt-manager, virsh etc) work perfectly as root (directly or via sudo) but I cannot allow another user to connect (failed to ...
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Cannot get vga-passthrough working with xen-4.5

I tried different Xen versions, the results are similar: vga-passthrough does not work. I can start a domU in hvm mode and connect with vnc but I cannot get it to work on my GPU I did add the cards ...
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Xen Kernel - SCSI_WAIT_SCAN Module

We've recently deployed a HP ProLiant DL180 Gen9 with 12 x Intel 530 SSD Drives. The system is running RAID-10 on top of HP Smart Array P840. Our aim was to use Xen on this server. However, when the ...
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Xen ERROR Couldn't find xen kernel for Ubuntu tree

xen-4.2 running on server with multiple CentOS running guest, But when i am trying to install Ubuntu i got following error. How do i install Ubuntu on CentOS Xen Server? [root@example ~]# ...
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644 views

Systemd hangs in Xen Dom0 immediately after switch_root in boot process

I've been trying to set up Xen to work with UEFI and my Arch Linux install (3.18.2) as a Dom0 but have been unable to boot. Of note is the fact that it will boot completely fine otherwise, just not ...
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261 views

Experimenting with Xen on already running Debian without LVM

A co-worker of mine was telling me about using Xen for virtualizing systems on Debian, and it peaked my interest. I looked up the instructions on Debian's Wiki regarding installation. I already have ...
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377 views

Xen error “No usable disk have been found”

I have install following Xen4 version on CentOS6.x but when i create VM and install OS it am getting following error before disk partition wizard No usable disk have been found I used following CMD: ...
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Unmount nested mounts not working after unmounted root of nest

I have a XEN Server, which I can't reboot. My boss has filesystems mounted as such strange way: /mnt/hda1/hda2 Then he unmounted them as such umount /mnt/hda1/ Now he can't unmount hda2 anymore. ...
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343 views

How to bridge a VM to public IP

I wish to to assign the IP from my eth1:2 to a VM; I also have no use of this IP for the host, it would be desirable to be exclusive to the VM. I've ended up with a setup just like this (eth1:1, ...
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Xen and Networking

I'm using Xen 4.1 I have a (debian) host with 1 ethernet adapter on 172.16.1.0/24 range, static configuration. I want to have various (centOS) guests, that will be on a different network: ...
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Xen and traffic shaping

I want to limit the incoming and outgoing traffic for a guest machine on a Xen Host. There is a total of 1000Mbit/s available on the host. The guest machine has its own interface, let's say vif1.0 ...
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148 views

Xen domU sort of ignores /etc/network/interfaces

I have a Debian based Linux installation, that gets around: It started out on a physical system, then I moved the OS into a VMware container and then into a Xen container. As physical and VMware ...
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259 views

host only network xen 4.4

I have one IP address (ipv4) and I am trying to install a domU (debian stable) on a dom0 which runs the latest xen 4.4.1 on debian testing. I have created xenbr0 bridge and it is mapped to my eth0. ...
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354 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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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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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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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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2k 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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563 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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368 views

Cant detach/ kill xm console on node server

please advice, why I cant attach console from xm command? [root@vm ~]# xm console vm104 Another console has already been attached to guest