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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Why does Xen fail to create domUs/start the virtual network interface?
I have received two errors while trying to create a new domU on Xen. First, I received this error:
Unable to complete install: 'POST operation failed: xend_post: error from xen daemon: (xend.err ...
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8 views
How to move a template from one xen nfs storage repository to another?
I have a bunch of templates on an NFS XCP 1.6 storage repository using thin provisioning for some of my VMs. I want to move the template's disks to a different NFS storage repository. There doesn't ...
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2answers
28 views
Xen: synchronizing time with Dom0
I have Xen virtual machines running on Debian 6 (both Dom0 and DomU).
I would like to synchronize clock on DomU with Dom0.
On http://wiki.xen.org/wiki/Xen_FAQ_DomU I have read that I need to set ...
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23 views
Where does all my resurces beeing used? [duplicate]
EC2 instance. Im aware of Xen virtualizing stalls CPU, does it also give me RAM when I "need" it? I can't figure out whats using almost 600mb ram in a idle terminalserver powering Apache/MySQL
top - ...
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1answer
19 views
Add OpenStack Compute to existing Xen based server
I have an existing server running Cenos 6.x with Xen 4.x and a dozen or so virtual machines. I'm building out an OpenStack environment and was wondering if is possible to install OpenStack compute on ...
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1answer
35 views
Grub can't find Xen multiboot file
I am running Debian Wheezy on a software RAID 0 with LVM. I'm trying to get Xen to work but grub refuses to boot in it. I installed Xen by following the instructions here: http://wiki.debian.org/Xen
...
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1answer
29 views
Creation of Xen VM fails with Error: Creating domain failed: name=buildbox03
Since a few hours, my xen VM does not want to be created.
The VM is quite unstable so I need to destroy and create is quite often. This morning I was able to do such a destroy-create cycle. A few ...
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1answer
31 views
Cannot change date/time on virtualized centos install without a reboot
I have a dedicated web server which is running centos with xen virtualization that has centos installed on the vm. I do not have access to the parent server, I can only manipulate the vm, of which I ...
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24 views
Is it possible to get the Citrix Xen version from within the guest?
(This is a follow-up to my Citrix Xen Tools question)
Situation:
Virtual Windows 2008 R2 64 bit
Hosted at large German hoster ("1&1" aka "1und1")
Server hangs, even after applying SF-suggested ...
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0answers
11 views
Optimize monothreaded application under XEN
I have an single threaded application who uses 100% cpu on virtual machine under XEN.
Adding more VCPU will not help. Is it possible to configure XEN VCPU in order to have better performance with ...
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2answers
66 views
fix kernel on Xen Server hypervisor vps
I have a cloud server hosted at Rackspace, and they use Xen Server hypervisor. I was running Ubuntu 12.04, and really messed up by attempting to do a release upgrade manually.
The hypervisor ...
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19 views
Migrate Ubuntu guest from Xen to VMware using VMware converter
I have run VMware converter on a Ubuntu 12.04 guest migrating from Xen to VMware. Now the Ubuntu guest won't boot (hangs after GRUB menu).
I've seen some guides regarding CentOS (et al), replacing ...
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21 views
CPU Compatibility for Xen Cloud Platform
I have pool with current configuration of several servers:
CPU: Intel(R) Xeon(R) CPU E5630 @ 2.53GHz
RAM: 32Gb DDR3
Can I add the following server to pool if i'd like to keep all ...
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1answer
30 views
XenServer xe CLI on OSX [closed]
Is there a port of the XenServer/XCP xe command-line tool to Mac OS X? Or, alternately, if this tool is open-source, what's the easiest way to get access to the source?
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Packet Issue on Xen
In one of my Xen pools I am having a bit of an odd issue.
Every now and then, one of my Xen hosts will randomly start having a problem and will truncate any large packets/data sent on it.
For ...
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1answer
42 views
Booting Ubuntu 12.10 guest on Debian 6.0.4 Xen with pygrub
I'm trying to run a Ubuntu 12.10 off a Debian 6.0.4 and Xen-4.0. I realised that pygrub might not be able to parse the menu.lst (I symlinked menu.lst to grub.cfg in /boot) and ended up with this ...
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1answer
32 views
Centos install in Xen problems
I'm running ubuntu 12.04.1, and I want to install CentOS 5 or 6 using network installation via http. Using xen images from http://mirror.centos.org/centos/5.7/os/x86_64/images/xen/
my config:
...
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28 views
nagios volatile service and system time change warning
I have a nagios service with volatile option on (executes event handler every time it encounters a non-ok hard state). Problem is that if the event handler executes for 2-3 times (that is the expected ...
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2answers
66 views
Strange Ubuntu boot up warning
I have a VM (Xen based), I can boot up the machine but there are some warning during the boot up.
Are they normal? If not, how to solved?
md: Scanned 0 and added 0 devices. ...
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1answer
29 views
Split management network from data in Xen Server
I'm working on configuring our existing pool of four hypervisors running XenServer 6.1 to use a separate management network.
Currently the setup is a single link with a public address over which all ...
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0answers
16 views
Changing the mac address in a libvirt xml config file breaks network connectivity for the guest
I'm using Xen with libvirt and trying to set it up on a bridged interface. I am able to install an OS and everything works as I would expect. If I save the xml output from "virsh dumpxml guest", edit ...
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Network traffic is not being forwarded from a VM to the network using a bridged interface with Xen + libvirt
I'm having trouble getting network access from a VM that I'm running using Xen and libvirt. I've been trying different things and reading similar posts online for a couple of days but I'm really stuck ...
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1answer
138 views
How to get more I/O performance from Citrix XenServer?
I have a Citrix XenServer 6.1 installed on a HP Server (1x Intel Xeon E5630 @ 2.53GHz (4 cores, 8 threads, RAM: 752MB for dom0 and 55286MB for the guests). The server has 2 scsi mirrored disks and is ...
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3answers
67 views
Xen memory management on small server
I am currently running VMware vSphere 5 on a server I use for various projects. Mainly I use it for honing my skills with administration and running a few game servers.
Recently I was considering a ...
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2answers
37 views
mount a partition on an lvm partition
I have a xen dom0 server (named virtserver), which contains a guest machine, let's call it "virtguest".
The virtguest used to be a physical machine earlier, and the whole old disk (with several ...
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24 views
Xen hangs on boot when scrubbing RAM
I have a CentOS 5 server I can boot into the stock kernel just fine, but when I try kernel-xen, it gets stuck here:
http://i.stack.imgur.com/wAI20.png
When I try adding no-bootscrub to the kernel ...
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1answer
19 views
Error: Cannot find ramdisk “hd(0)/boot/grub/menu.lst”
I have a dom0 and try to run domU with config like this:
kernel = '/root/xen/dist/install/usr/local/lib/xen/boot/pv-grub-x86_32.gz'
ramdisk = 'hd(0)/boot/grub/menu.lst'
vcpus = '2'
...
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2answers
41 views
Does Xen need an XServer for graphical display?
I'm trying to create a very small ISO, which is bootable and brings up a DomU such as Windows 7 using Xen. I want to setup the minimal number of packages in the small ISO, therefore I'm wondering if ...
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1answer
136 views
Can I safely uninstall “Citrix Tools for Virtual Machines”?
Having several virtual servers with Windows 2008 R2 at our web hoster (Germany's "1&1", they seem to use Citrix Xen), I have every now and then some servers that hang (RDP login screen hangs ...
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41 views
Moving from Xen based VPS to Hyper-V based [closed]
I'm trying to decide whether I should move my VPS from a Xen based solution to a Hyper-V based one. The Hyper-V solution offered a better price. My site is built with WordPress and a couple of plugin ...
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81 views
Nagios: check services being orphaned?
Recently I noticed that there are some warnings in the nagios.log:
[1366060611] Warning: The check of service 'pt-deadlock-logger' on host 'xx' looks like it was orphaned (results never came back). ...
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2answers
44 views
How to reset root password CentOS (domU) hosted in Xen?
Need help on resetting root password of a CentOS which is a guess OS (domU) in XEN. I already tried to get to grub but it doesn't display or maybe using a different grub (pygrub). Thanks in advance.
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25 views
Windows 7 on Xen Using Alpine Linux
Is it possible to configure Windows 7 as a Xen DomU Guest on Alpine Linux? What are the steps to do this?
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1answer
109 views
How do you tell if the nvidia driver supports our GRID K2 card? [closed]
How do you know if the NVIDIA driver actually supports the card you have? I'm getting an (EE) no devices detected in Xorg.0.log and not sure if it is related to the device driver not supporting the ...
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1answer
60 views
Setting up VPN on a VPS
I want set up a VPN in my Xen VPS with one static IP. What I should set in /etc/pptpd.conf as localip and remoteip.
I followed this tutorial: ...
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92 views
Xen 4.2.1 dom0 boot hang
I'm having some issues with booting xen dom0.
Initially I started out with Ubuntu 12.04 LTS server and compiled and installed xen 4.2.1. Unfortunately, the machine wouldn't boot but would show a ...
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understanding Code Segment Register
I had two consecutive server failures when running xen 3.4.2/XCP 1.1 and on both crash logs it is showing
RIP: e008:[<ffff828c8010e310>]
on every physical CPU.
I am not expert in crash ...
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1answer
73 views
ntpdate setting incorrect date after boot
I have a few Debian XEN virtual machines and upgraded them to wheezy(I need the 3.2 kernel for a project). Everything was okay until I rebooted on of the machines.
My current problem is, that ntpdate ...
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1answer
62 views
Xen guest - cannot get network connection beyond the host
I've just installed a XenServer 6.1. It came with a standard configuration:
network 0 connected to NIC 0.
I created a VM but I can't reach any network beyond the host.
From the VM (172.18.32.20), I ...
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0answers
21 views
Understanding Xen debug.log
Running xen 3.4.2 running with 15 vm (pv+hvm) on a host with 256 Gb RAM and 96 core CPU.
But recently my host crashed on debug log its showing
translating ffff83183fcb0000 with CR3 100ae42000 and 4 ...
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1answer
50 views
Issues with Xen Kernel and Debian
My Xen installation has gone weird on me and I am trying to get back to normal.
I overflowed the base partition and in my haste to delete unused files I think I deleted something important, so now ...
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0answers
16 views
Xen on Debian 32 doesn't boot (double GRUB entry?)
I installed XEN 32 on a Debian 32 machine (an old P4 that I'm using for educational purposes).
apt-get install linux-image-xen-686 xen-tools xen-utils-4.0 xen-hypervisor-4.0-i386
After that, I did ...
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1answer
28 views
Xen domU sees 35MB less than assigned
I am using ubuntu precise 12.04 and I am booting a paravirtualized ubuntu 12.04 domU, all being 64 bits. The VM has memory=1024 assigned and xentop at the host correctly shows 1024MB, but htop in the ...
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1answer
54 views
Migrate Windows XP to Xen HVM
I want to migrate a Windows XP machine to a Xen 4.1 HVM virtual machine with Windows XP installed (the custom software will only work with XP).
The software is custom made, and needs to be migrated ...
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1answer
136 views
Use SSHFS on XenServer 6.1
On Xen Server 6.1, to backup my VMs, I use a script based on the following tools:
xe vm-list to build a list of the VMs to backup
xe vm-snapshot to take a snapshot of the VMs
xe template-param-set ...
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1answer
436 views
CentOS 6 Xen guest fails to boot after 'yum update'. Kernel?
I Seem to be having an issue with a Xen guest not booting after a yum update.
DomU Configuration:
#kernel = '/boot/solus-vmlinuz'
#ramdisk = '/boot/solus-initrd.img'
bootloader = ...
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1answer
56 views
Always use Xen? [closed]
I'm installing the usual bunch of servers for general office stuff, a mixture of Windows/Sharepoint and Linux
Since none of these need direct access to the hardware, fancy graphics or are really ...
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1answer
138 views
Unable to run libvirt with xen on Centos 6. Fails with ioctl 3166208
As per subject.
Xen 4.2.1
libvirt 0.10.2-18.el6
Linux gatto.example.com 3.8.3-1.el6xen.x86_64 #1 SMP Sat Mar 16 15:16:57 EST 2013 x86_64 x86_64 x86_64 GNU/Linux
I followed the instructions given ...
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18 views
one csf on dom0 for all of domu
I have a server with debian 6 and installed xen with two PV linux on that.
these two PV will running two different website but i want only port 80 be open on them.
so, i want install csf only on dom0 ...
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66 views
VM install does not get IP address - virt-install on XEN
when I try to add a VM with virt-install(Centos as per the details in the guide here), when I try to enter network details dhcp or manually enter ip during installation of guest centos machine, I get ...
