XEN is a hypervisor based virtualization technique.

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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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136 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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382 views

Networking problem with new Intel NUC

I recently got a new Intel NUC6i5SYH to replace my very old and not too powerful home server. I've installed XenServer 6.5.0 (as was on the old server) and plan to just copy over the VM's and other ...
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1answer
22 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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32 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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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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35 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: 192.168.0....
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170 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: https:/...
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Restore a disk from a snapshot in XEN 4.6

I created a snapshot with lvcreate -n snap01.vm01 -L 5G -s vg0/vm01.eclabs.de now I did some stuff on my disk i don't want to keep and want to revert it to the snapshot point. How do I restore ...
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271 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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785 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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468 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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169 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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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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605 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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58 views

Virsh (libvirt-bin) is not able to communicate with Xen server

I have installed the latest version of Xen server 6.5. Now I want to connect to it with virsh (libvirt-bin). When I do this I get the error error:end of file while reading data: sh:nc:command not ...
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163 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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759 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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316 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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38 views

How to install Fedora on Xen with the LiveCD image?

I've managed to get the Fedora LiveCD image (Fedora-Live-Workstation-x86_64-21-5.iso) to boot in Xen using the following configuration: name = 'fedora_x86_64' memory = 1024 disk = [ 'file:/path/...
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49 views

xen + libvirt share disks betwee VM on diferent hosts

I have another problem. what I've done is: We deploy 2 physical hosts with SLES 12 SP1 and install XEN hypervizor on both. On each host we provide few block devices via FC. On each host we ...
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202 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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30 views

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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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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121 views

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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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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273 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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165 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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81 views

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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128 views

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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355 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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276 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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295 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 option....
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162 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 (LAN1)...
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158 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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1k 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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Why cannot I ping an xen domU through the bridge?

I am on a Debian upgraded from 7.11 to 8.5, so the xen package is upgraded from 4.1 to 4.4. I do not know much about networks, but when I see a diagram like this (taken from the Xen Networking wiki ...
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Xorg refuses to start with radeon driver, attempting to pass through NVIDIA GTX970 using Xen on Mint 18

I am attempting to pass through my GTX 970 to a Windows VM using Xen (I already have the hypervisor in place and am currently just running Linux Mint 18 on Dom0). I am attempting to use a Radeon R9 ...
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24 views

Converting A Physical Ubuntu Server with boot raid 1 to a Xen domu

So here's the situation: 1 physical server running a very outdated version of ubuntu 14.04 Booting off of a a software raid 1 configured in the installation. This server runs mission critical ...
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31 views

Install CentOS 6.2 GUI with XenServer 6.5

This is my first time to use XenServer 6.5. I want to add a CentOS 6.2 Virtual Machine into my XenServer. I put the CentOS 6.2 iso and added > vnc in boot parameter. Below are the screenshot: After ...
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Kernel bug at at fs/dcache.c on XenServer

Yesterday on of our servers running Xen 6.5 restarted, in /var/log/messages I found following messages: Apr 29 11:52:59 server kernel: [7476681.051566] ------------[ cut here ]------------ Apr 29 11:...
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38 views

Qubes/Xen OS: access file manager for dom0

I hope somebody more experienced with Qubes specific terminal commands can help. If the KDE manager is installed, how does one open via terminal input the file manager for 'dom0'? To browse 'Home' ...
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53 views

Curses interface for text-mode Xen DomU's

QEMU implements an -options curses (previously -curses) flag for text-mode OSs. From the qemu(1) man page: Normally, QEMU uses SDL to display the VGA output. With this option, QEMU can display ...
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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 do-release-...
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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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43 views

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: fe80::...
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130 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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186 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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420 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, eth1:...