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.

learn more… | top users | synonyms

0
votes
0answers
13 views

Creating a XenServer VM from the Command-line

I have an issue in which I cannot understand how to create a XenServer Virtual Machine from the command-line. I have installed XenServer on an unused Tower unit, and currently SSH into it from my ...
0
votes
0answers
21 views

CentOS 7 on XenServer 6.5

I am having problem trying to get CentOS 7 Graphical installer to work on XenServer 6.5 (Service pack 1). I have used CentOS 7 template. Graphical installer does not work, getting blank screen with ...
1
vote
0answers
21 views

Xen based AMI does not boot (/dev/xvda)

Trying to create an AMI Instance Store within a xen based guest (VM: CentOS 6.6, 32 bit, PV). 'ec2-bundle-vol' only accepts /dev/xvda1 as a valid block device. If device entries are modified in ...
0
votes
1answer
17 views

Change Xenserver 6.5 Pool Master

I'm looking to change the pool master because my current pool master is having some hardware issues. I've disabled HA and I came across this script to change the pool master to my other server: xe ...
1
vote
0answers
19 views

Debian Jessie not picking up xen virtual framebuffer

I have a Xen 4.1 installation on Debian Wheezy, administered through xm. When I boot a Jessie DomU I get output on the emulated VGA card / VNC display only for the first few seconds of boot, then it ...
1
vote
0answers
28 views

How does EC2 signal a reboot to an HVM instance?

What is the exact signal being sent? How can the instance (Linux in this case) handle it?
0
votes
0answers
21 views

XENSERVER - PCI: Fatal: No config space access function found

We use XenServer to host our VPS and when we tried rebooting the server we get the following error right away PCI: Fatal: No config space access function found We need to edit the grub file for the ...
0
votes
1answer
24 views

Use graphical DomU (X11 for Linux, regular UI for Windows) from Dom0 without any GUI on Dom0

I am creating a Xen (para)virtualization setup, with two DomU's: a Windows 10 client install, on HVM, and an Linux client install with X11, on PV. Dom0 is a non-graphical Debian install. So far I have ...
1
vote
0answers
15 views

If XEN can convert my installed OS to guest OS? [closed]

Need to run multiple OS (Windows 7, Ubuntu 14.04, 12.04). Never use XEN before. Just want to check: Does XEN have to be installed on top of some OS? Can it be installed directory on a fresh computer ...
-1
votes
0answers
20 views

Server Network Monitoring, Management, and Deployment [duplicate]

We are beginning to build a footprint of servers used for a variety of purposes in SoftLayer datacenters across North America and one question that has been "gnawing" at me since the start is "what ...
0
votes
0answers
11 views

Determining what type of virtualisation used on VPS/VDS? [duplicate]

I bought VPS/VDS and want to know what virtualization used. I have a root prompt in Debian Linux.
1
vote
2answers
31 views

How to upgrade Xen with minimal risk and downtime?

I've recently noticed that one of my server is running on a pretty old version of Xen: $ dpkg-query -l | grep xen ii libc6-xen 2.11.3-4 Embedded GNU C ...
0
votes
0answers
6 views

How to check what is the default NIC on a Xen guest?

A VM running on a Xen is getting buggy. Some VM lost their network connection sometimes. I've identified an error on the ping command: $ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. ...
0
votes
2answers
50 views

Forward Port on Guest Operating system With Libvirt

I am currently running a Xen Hypervisor underneath Ubuntu 14.04. On the host machine I am running a guest VM. From what I understand, In order to be able to receive incoming connections on the ...
0
votes
1answer
34 views

How to diagnostic internet access failure on a linux system?

I have a VM running on Xen. The virtual machine was running fine for months and suddently the network access broke down. Dom0 DomU .-------. bridge ...
0
votes
0answers
16 views

Booting CentOS7 on Xen 3.1.6: upgrading Xen best path forward?

I'm running into problems booting CentOS 7 on Xen 3.1.6: Here is the error: [root@vh1 ~]# xm create vm-app-em5-test Using config file "/etc/xen/vm-app-em5-test". Traceback (most recent call last): ...
0
votes
0answers
23 views

How are the Debian/Ubuntu Xen netinstall images built?

Xen/XenServer has this nice feature where you can select a Debian or Ubuntu template and point it at some mirror and it will go and download a minimal kernel and initrd which will be used to bootstrap ...
1
vote
1answer
19 views

Checking for disk failures and issues in a VM

If you host with a provider who runs a RAID 10 or another RAID based system and your in a VM. Are you able to check for disk failures or RAID failures from within the VM or does it require host based ...
-1
votes
1answer
27 views

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 .
0
votes
0answers
28 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 ...
-2
votes
1answer
26 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 ...
0
votes
1answer
18 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 ...
0
votes
0answers
13 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 ...
0
votes
0answers
15 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 ...
0
votes
0answers
29 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 ...
0
votes
0answers
17 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.
1
vote
2answers
24 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 ...
0
votes
0answers
22 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' ...
0
votes
0answers
18 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. ...
0
votes
0answers
25 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. ...
0
votes
1answer
119 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 ...
0
votes
0answers
13 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 ...
0
votes
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 ...
0
votes
1answer
140 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 ...
0
votes
1answer
46 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 ...
0
votes
2answers
118 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 ...
0
votes
2answers
48 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 ...
0
votes
0answers
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 ...
1
vote
2answers
74 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 ...
1
vote
1answer
40 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 ...
0
votes
1answer
50 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 ...
1
vote
0answers
74 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 ...
0
votes
0answers
115 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 ...
0
votes
0answers
17 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 ...
0
votes
1answer
32 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 ...
1
vote
1answer
91 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 ...
2
votes
2answers
108 views

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, ...
1
vote
0answers
318 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 ...
1
vote
2answers
31 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 ...
-1
votes
1answer
355 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 ...