Xen is a hypervisor based virtualization. It supports x86, AMD64, IA64, ARM and other CPU types, and Linux, Windows, Solaris and *BSD guest operating systems.

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How to get output 'xentop' or 'xm top' command in centOS

I would like to develop shell script by 'xmtop' or 'xm top' command get output in same format or just show on command line like, top -c, w .
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9 views

Xencenter system alert VMPR failed: snapshot could not be created

I am new in Citrix my previous administrator setup the Citrix. Last five days showing the same error System alert: "Production Daily: VMPR failed: snapshot could not be created","","AA","Jul 27, ...
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14 views

Routing issues with bonded VLAN trunk bridged to Xen dom0 on CentOS

I am setting up a new dom0 which has a LACP bond. Connectivity is fine between the network, dom0 and domU's without the trunk enabled. Once I start tagging traffic on the switch and add the ...
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7 views

KVM or Xen for VGA Pass-through [migrated]

I'm in the planning phase of setting up a personal virtualization server. One of the virtual machines I want to setup is a Windows box with Steam. Ideally, I want to stream higher-end games to my ...
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16 views

XEN Server NFS SR read only

We have two Boxes running XEN XCP. One SR is located on an FreeNAS 9 NFS share. For some reason the NFS share turned read only which is pretty bad for one VM whose VDIs are located on the NFS SR. I ...
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14 views

Is it possible to transfer OpenVZ VPS image to XEN platform?

I'm having a memory related issue with my vps on openvz platform and I guess that my hosting provider is overselling RAM. So, I'm thinking to move on a xen platform since ram cannot be oversold but I ...
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10 views

migrate xen server to new HDD

I have a Xen Server with multiple VMs that are mirrored with DRBD to a Backup Server, and it's running out of space. I want to migrate it to a bigger Harddisk, but I'm not sure about how to go about ...
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14 views

libvirt: can it provision network interfaces where the network backend is running in a domU rather than dom0?

Thanks to a great blog post, only slightly out of date [1] I've managed to configure a dom0 which has no networking at all: physical network interfaces are passed through to dedicated domU guests ...
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15 views

How to get Ipv4 in NAT mode & Ipv6 in bridge mode together in Xen 4.4?

Here is my problem with Xen 4.4 wth Debian 8, i have one Ipv4 address & plenty of Ipv6 addresses. I would like to setup xen for NAT to route IPv4 to a private network and bridge with Ipv6 ...
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16 views

Migration from kvm to xen [duplicate]

It is possible to migrate the instance from kvm to xen hypervisor, being migration from full virtualization to paravirtualization , is it possibile.
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18 views

Setting up emergency console access with xen

On Gandi (or other providers) you can activate an emergency console to your VM. It binds a SSH channel to a temporary IP and port. I have my own server running on xen. I would like to implement an ...
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19 views

xen nic passthrough to ubuntu domu

I have installed xen hypervisor 4.4 on ubuntu 14.04 and performed NIC passthrough to PV domu. The config of domU: /etc/xen/dom1.cfg name = 'dom1 Ubuntu v14.04.2 LTS' vcpus = '1' memory = '1024' ...
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17 views

Linux Redhat 6.0 booting freezed at “starting RHM Managed Xen Domains”

One of our Linux redhat 6.0, 64 bit machines freezes **after the step of "starting RHM Managed Xen Domains"** during booting. It has been staying there for days without successful booting. ...
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20 views

Openvswitch/Xen VLAN connectivity

I`m looking for help with Openvswitch... In a Xen virtualized environment I have VMs(both Linux and Windows) set up on different VLANs and between 2 VLANs I need to set up inter-VLAN conmmunication. ...
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1answer
78 views

Switching back to libxl from xend without rebooting

I did something dumb: I enabled xend over libxl and started an instance with xend. Now, libxl won't start any instances, even though I got rid of all the xend instances and stopped xend: root@xen1 ...
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12 views

OpenSUSE Xen Multiple Apache VM's

I am attempting to set up an OpenSUSE 13.2 server with Xen Hypervisor installed. The problem I have now encountered, is how do I route the correct requests to the correct VM instances. Lets say I ...
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1answer
8 views

Load for Xen units

I'm looking for a way to check load for Xen units on a xen Node run by Solusvm. I know OpenVZ can show container load in the solusvm panel. But if I go to load in svm for the Xen Node the load page is ...
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1answer
73 views

Convert Physical Machine to Xenserver

I am planning to convert all my physicals machines into Xen virtual machines. But i can't find any documenation on that? is it just to make a image file and convert it to a vdi ? I may have to ...
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37 views

Xen hypervisor component/plugin development [closed]

I am new to virtualization as a concept, and am particularly interested in Xen. A machine is a complex system composed of many parts/constituents: CPUs (one or more) RAM Hard drive Network card ...
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2answers
64 views

Why do I not get a console for my CentOS6 PV DomU on CentOS6XEN4 Dom0?

I am currently in the process of migrating from SLES11 SP3 as Dom0 - running the "old" xend/xm-stack to CentOS6 XEN4 running the "new" xl-stack. I stumbled across a strange problem: After pygrub ...
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2answers
41 views

How can I best secure NFS between an Xen host on Debian and VMs?

After some research, it seems that the best way to share files between my Debian Xen host and the virtual machines on it is to use NFS. How can I secure NFS so that only the specified VM can access ...
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18 views

What is the xsave cpu feature? [duplicate]

Recently after updating to xen v4.5 I lost my ability to boot my hypervisor. It would restart after saying "scrubbing free ram." After some frustrating trial & error I traced the problem to the ...
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1answer
62 views

Multi IPs on a Xen VM with bridging

While I am fairly new to XEN (running under Ubuntu 14.04) I've not had any real issues until now. I have set my networking using bridging and that has worked well for many different machines until ...
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32 views

XEN - Does pygrub alter grub on dom0

I apologize for question but I did not really understand the idea behind pygrub. I've downloaded VM from stacklet.com. The image is shipped as a ext4 file and pygrub config. My question is if I can ...
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46 views

Running OpenVPN on Xen node causes guest VM to view all inbound connections as originating from the node IP

I have two node servers running Xen 4.2 -- I'll call them Node A and Node B. Node A is running OpenVPN as the server. Node B is running OpenVPN as the client. Both nodes host a number of Xen guest ...
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66 views

Xen: network between dom0 and domU does not working, while network between particular domUs does

I am unable to establish communication between domU and dom0. I have two domUs and they are able communicate between each other. Dom0 is connected to Internet. I just need network between dom0 and ...
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95 views

How to configure mkinitfs for stateless alpine linux / xen DOM0 boot?

I am working on setting up a test bed for some Xen development. I have a development server where I can create new builds of xen and push them to the tftp server to be PXE booted on some test ...
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16 views

Defunct process Rev1112

We were having the following output in top on a Debian box on XenServer: top - 10:00:55 up 10 days, 24 min, 5 users, load average: 126.79, 128.96, 71.39 Tasks: 10382 total, 1 running, 4801 ...
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25 views

convert SLES11 SP1 vmlinuz-3.0.13-0.27-xen to VMware using vmware converter

I am looking to convert a XEN VM (SLES11 SP1 kernel vmlinuz-3.0.13-0.27-xen) to a VMware guest using the VMware converter tool. The VMware tool tell me conversion went fine. 100% OK, however, when I ...
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1answer
78 views

XEN Guest error cannot open display

[XEN - dom0] Ubuntu 12.04.5 server x64bit , using it on CLI Mode - no GUI installed [domU - guest] HVM guest created via configuration file, I Determine the started DomU port attached with : # xm ...
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2answers
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xen vm memory missing

I have an Ubuntu server with 320GB of memory. I installed xen 4.4.1 on this machine, and run 2 Debian VMs. One with +-100GB of memory and one with +-200GB. Everything worked fine, until at one point, ...
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240 views

Xen VM won't come up: could not find bridge device xenbr0 (configured to use routed)

I am using xen 4.4.1 on an Ubuntu 14.04 server, my DomU is running Ubuntu 14.04 Server as well. I've run this DomU in bridge-mode previously no problems. However I want to switch to a routed setup. I ...
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29 views

Can I use kernel modules on Amazon HVM/PV instances?

It's a perfectly stupid idea, I know. But I want to test one of my older projects, which includes kernel module (Netfilter extension) on a virtualized cloud-y instance. Will it be possible for me to ...
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334 views

failed to run bootloader: -3 on create with xl

I have a Ubuntu 14.04 migrated from Virtual Box Have 3 partitions. I've updated the /etc/fstab for recognize the new partitions and chrooted for update the grub I'm using the following ubuntu.cfg ...
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48 views

xen gentoo domU (Ubuntu 14.04 LTS dom0)

I have a few Ubuntu 14.04 LTS Xen 4.4 servers and I would like to add Gentoo guests. However I am not sure how to do that. Does anyone know where I can review some examples? Also does it have to be ...
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2answers
288 views

bash: convert date from to unix timestamp changes timestamp

Running the following command at the xen-servers (either DOM0 or DOMU) at $company gives me a negativ number, on every other system zero (0) (even in my cygwin). date -d "1970-01-01T00:00:00" "+%s" ...
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1answer
110 views

Random XEN guests do not boot complaining disk not found

Performed the latest Citrix XEN Server 6.2 updates, skipping anything related to 6.5. Everything seemed normal after fixing GrubConf.py except that a few random Windows Servers would not start. ...
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76 views

XenServer: run management and data over same LACP bond

I have a XenServer (open source version 6.5) machine with 6 available ethernet interfaces. Is there a way to create one single LACP bond with all interfaces and then run the management network as ...
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39 views

Assigning a public IP to a Xen Guest machine

On my CentOS server (dom0) I have 4 Ip addresses: eth1 - 56.x.x.100 eth1:1 - 56.x.x.101 eth1:2 - 56.x.x.102 eth1:3 - 56.x.x.103 How can I map eth1:1 (etc) to one of my guest machine? Currently ...
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96 views

Xen server on hetzner with two public up and local virtual network

I use Xen server on my office with a Dell t310 with only one public ip. The public ip is assigned to the router that forward ports to a guestos running endian firewall that route traffic to an apache ...
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start Xen DomU automatically when host is rebooted

I have searched the other questions that are similar, but none of them actually provided the answer. The other answers all go down different bunny trails but leave the original question unanswered. I ...
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50 views

AWS EC2 Instance Shutting Down Prematurely (Possible Xen Driver Issue)

Currently trying to run a JSON Script using CloudFormation via the AWS Console and we're coming across a very frustrating error. The Instance seems to start up, and gets past the 2/2 Check in the GUI ...
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Xen relay device on DomU

I am using Xen hypervisor. I've two reuirements forward a devfs file to DomU Guest. forward a tty to DomU Guest. forward a pts to DomU Guest. If 1st one works second one will also work. Example: ...
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225 views

xen with image disk files (instead of LVM)

I am currently running virtualbox on linux to run some simple webserver linux hosts. This is because I like the portability and extra isolation security. Because the host (and guests) are Ubuntu, ...
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120 views

BUG message on xenserver 6.5 - bad memory?

Several times a day I receive the following error in /var/log/messages. The server hangs and requires a reboot to respond again: Feb 1 13:44:54 xenserver-abfuqvrs kernel: [35023.166776] BUG: unable ...
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Force the GPL/PV driver to a lower link speed

I'm running Xen 4.4.0 on Ubuntu 14.04. On this Dom0 I am running: 1 DomU Ubuntu 14.04 with Shorewall 1 DomU Windows Web Server 2008 R2 with GPL/PV drivers Both domUs connect to the same bridge ...
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101 views

No space to snapshot on xenserver - Catch 22 to move the VMs

I am trying to move some VMs from one Xenserver onto another one but am stuck in a catch 22 situation. I have 3 VMs running on this server all on one storage repository. I don't have space to snapshot ...
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35 views

What problems arise if user-space drbd is older than the kernel module?

Since more than five years I am using XEN in a productive environment. My constellation: SLES11 (included: OpenSource XEN 4.x), DRBD 8.3 in primary/secondary mode. Now I would have loved to go away ...
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2answers
695 views

Xen / libvirt - “End of file while reading data: Input/output error” when attempting to start a domain

I'm getting the following string of errors when I attempt to start a domain using virsh: virsh # start vimes error: Failed to start domain vimes error: End of file while reading data: Input/output ...
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150 views

xen server windows template sysprep Autounattend

Got a Xen Server Template Windows 2008 R2, thats had alot of things already set (disk size, server manager disabled etc, etc) We spin up, windows patch host and re-run sysprep My question is, can ...