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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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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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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659 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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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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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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12 views

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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763 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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54 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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76 views

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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106 views

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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28 views

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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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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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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18 views

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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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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23 views

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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138 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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88 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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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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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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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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645 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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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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libvirt daemon doesn't start on Gentoo [closed]

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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125 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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59 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 ...
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62 views

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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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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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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455 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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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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213 views

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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116 views

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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599 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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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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466 views

How to backup entire xen dom0 (on debian)

How do you go about creating a bootable backup ISO of my computer (dom0)? I have tried remastersys and this backs up everything but Xen does not work properly. LiveCDs also do not work. Does ...
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263 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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378 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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344 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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29 views

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 ...