XEN is a hypervisor based virtualization technique.

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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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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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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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48 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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51 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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820 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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200 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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69 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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24 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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103 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
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178 views

xentop gives static info about memory usage

I am using CentOS 6.5 and Xen 4.2.4-30 xentop does not change MEM(%) at all. NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO ...
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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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230 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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62 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
1k views

bridge does not forwarding packets centos

I am using CentOS 6.5 64 and use xen to create a virtual machine (CentOS) ifconfig [root@CentOS ~]# ifconfig eth0 Link encap:Ethernet HWaddr 08:00:27:54:B3:FA inet6 addr: ...
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953 views

My Atheros Ethernet network drive is not working with Xen Redhat client

First I am a beginner in use Linux operating system, and I am not familiar with the error messages I have TOSHIBA Satellite laptop Intel (R) Core (TM) i5-4200m CPU I have installed Red Hat Enterprise ...
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171 views

Gentoo XEN host + EFI + MDADM + IMSM RAID5

I have a workstation with a working Gentoo setup. It uses IMSM FakeRAID (level 5) with 4 disks. Booting done without bootloader using Linux kernel EFI STUB. System works fine. Now I need to setup XEN ...
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device mapper on RHEL6 unable to create devs for LVM logical volume

I have XEN guest running RHEL6, and it has a LUN presented from the Dom0. This contains an LVM volume groups called vg_ALHINT (INT for Integration and ALH is an abbreviation of its Oracle database ...
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87 views

Why do I get dropped into a GRUB rescue console? [duplicate]

I've been setting up my environment on a fedora 20 64bit, the last week. After a restart tonight I am unable to boot into my system. It boots into this terminal/prompt and it says: [ Minimal ...
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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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293 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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84 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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714 views

Can VirtualBox run under Xen Dom0?

I'd like to turn my Linux Mint desktop into Xen host. Will I be able to use VirtualBox inside Dom0, just like without Xen? What the limitations would be (if any)? I believe, that this might not be ...
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1answer
307 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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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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108 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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230 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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245 views

No usable clock interface found

I just finished installing a paravirtualized archlinux guest on xen. I get the following error when my guest boots: [1.185226] i8042: No controller found [1.1247134] drivers/rtc/hctosys.c: ...
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103 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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106 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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1answer
786 views

Adding wlan0 to xenbr0

I'm setting up xen on debian to do some testing and having problems with the bridge. I would like to use wlan0 as the bridge, but can't seem to get this working. Currently I have tried this: # This ...
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129 views

How to find out which virtualisation technology is used on Linux VPS server? [duplicate]

I have access to some Debian Linux vps servers, however I cannot access their controls panel directly: only server administrator himself can do that. Is there any way to find out what visualization ...
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1answer
869 views

Measuring CPU %steal on VMware and Hyper-V hypervisors

For Xen Linux guests, %steal time is readily available via top and other utilities. Is it possible to get this and related metrics from within a Linux guest when running a non-Xen hypervisor such as ...
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1k views

replace xen kernel with non xen kernel

I have a virtual appliance in Xen format (XVA) that I wish run to on another hypervisor (MS Hyper-V). What have I done so far: I have converted the XVA to OVF using XenConvert, this resulted in a vhd ...
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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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10k views

Mounting LVM2 volume gives me 'mount: you must specify the filesystem type'

I have a LVM2 Volume Group 'vgXEN' with a Logical Volume in it called 'test-disk'. This is the output of lvdisplay: --- Logical volume --- LV Path /dev/vgXEN/test-disk LV Name ...
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1answer
716 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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150 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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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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Allocated Memory difference in xen guests after using Linux 3+ kernel [closed]

Can someone explain to me why there is a memory difference in Guests with the same configuration? Hypervisor: xen 4.2 64 bit VM1: Centos 5.7 with 2.6.18-274.el5xen Assigned memory from xen is ...
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277 views

Open luks-encrypted partition from virtual DomU LVM disk containing another LVM

I've gotten myself in a bit of a bind, here. A while ago I set up an encrypted Unbuntu 13.04 under Xen. It's virtual disk is an LVM LV. This LV was presented to the DomU as a (whole) physical disk ...
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183 views

Moving a Xen DomU to a new block device

I am busy replacing the (SAN attached) storage configured for this XEN host. Is there some way to "move" the domU from one block device to another on the same host, possibly something similar to live ...
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723 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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1k views

Linux-distro with built-in Xen?

Are there any Linux-distros with Xen "built-in" and ready to act as host for virtual-computer out-of-the-box? Alternatively, distros where you can easily select "Xen-host" as an install option? I'm ...
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137 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: ...