The Xen (pronounced zen) hypervisor runs directly on the hardware and then starts a priviledged virtualized system called "Dom0". You can regard that as xen-controller. From the Dom0 system you can create other virtualised systems called Domains that Xen literature calls DomU. Xen works with ...
0
votes
3answers
67 views
Can I virtualize multiple hosts into one virtual system?
I have 5 computer systems in our small office. From my basic understanding of Virtualization technology, I think I can virtualize the 5 systems into one big virtual system. I wish to confirm this.
...
0
votes
0answers
120 views
Managing XEN through virt-manager on ubuntu 12.04
I have been trying to make xen work on a remote machine with no GUI.Installed XEN hypervisor on the machine and booted in that kernel.Try to create VM using virt-manager. I tried accessing ...
2
votes
0answers
27 views
My Xeon Processor supports VT-x, is it compatible with Xen? [closed]
While looking for a server to run Xen I stumbled across a barebones setup which comes with an Intel Xeon L5420 on the SuperMicro X7DCA-L motherboard. Doing a bit of research I found the processor ...
-1
votes
2answers
27 views
Installing and configuring xen with out virtmanager and GUI
Is there any alternative to configure and install many vms and manage them on a remote machine running on ubuntu 12.04 using XEN.we have to configure vm on a remote machine through ssh.can it be done ...
0
votes
0answers
25 views
Troubleshooting Bug: Soft Lockup [migrated]
We're having some trouble here with "soft lockup"s in our /var/log/syslog. The system seems to freeze for 10-70 seconds, then comes back. This is affecting web serving and other key processes. It ...
1
vote
0answers
26 views
Cannot use I/O in console for Xen HVM running FreeBSD/pfSense
I've been having a really hard time trying to get a Xen HVM using pfSense 2 (based on FreeBSD 8.1) working.
I can make the machine run, and boot from an ISO image, but I cannot get I/O to work in the ...
1
vote
1answer
72 views
Xen 4.1 host (dom0) with blktap disks (“tap:aio:”) not connecting
Problem using blktap with xen-4.1 running Ubuntu Precise stock kernel with dom0 xen-4.1.
I get:
[ 5.580106] XENBUS: Waiting for devices to initialise: 295s...290s.
...
[ 300.580288] XENBUS: ...
0
votes
1answer
32 views
Xen domU CPU Burst limits
We have a set Xen domUs for production and we have been providing different QOS for different clients and needs. We are able to limit the number of VCPUs and the network traffic.
Now, we would like ...
0
votes
1answer
43 views
Can't do XEN pci passthrough of onboard Intel HDA Sound Card (but works in KVM) [closed]
I'm trying to pass an onboard SBx00 Azalia (Itel HDA) through to a XEN windows guest, but it doesn't seem to be working.
The device appears in the device manager as High Definition Audio Controller, ...
0
votes
3answers
66 views
With Xen, when is Swap used?
I have a 512MB Xen VPS with 1024MB Swap.
When I SSH into it and type "free -m", it shows I have around 50MB free memory.
I had recently downgraded from a 1024MB plan because I didn't need the ...
-1
votes
1answer
54 views
Method for comparing VPS node qualities [closed]
I have 2 VPS's from the same company and both of the VPS's are on different nodes.
Are there any kind of test or utility I can preform to see which one has better connection, load, etc?
Is it ...
0
votes
0answers
62 views
Vsftpd in passive mode on xen quest
I have xen node with couple of guests, all of them have dedicated IPs and configured with bridged network. One guest have installed cPanel+csf+pure-ftpd and it's working greatly in passive mode, ...
2
votes
0answers
69 views
Citrix XenApp Fundamentals
I have a problem with a new install of a XenApp Citrix server.
Everything was working fine, but I was setting up Citrix Access Gateway and single sign in. Now, on the main server I am getting an ...
0
votes
0answers
52 views
Solved - Xen RTNETLINK answers: Device or resource busy
I'm getting following error while creating vm.
here is network interface config.
vif = ['type=ioemu, ip=192.168.122.101, vifname=vifvm102.0, mac=00:16:3e:f1:51:45, rate=12800KB/s, bridge=br0']
If i ...
0
votes
0answers
41 views
Linux add bridge interface with DHCP IP assigning
How can i configure an bridge interface with command line which is being created with virt-manager i.e. virbr0, virbr1 . I can create simple bridge interface but don't know how to configure this for ...
-1
votes
1answer
62 views
xen won't start
Server IBM x3650 M3
Xeon E5506, 50G RAM, Ubuntu 12.10
grub.cnf
menuentry 'Ubuntu GNU/Linux, with Xen 4.1-amd64 and Linux 3.2.0-24-generic' --class ubuntu --class gnu-linux --class gnu --class os ...
0
votes
2answers
107 views
Shared storage between VMs
I am new to server administration and virtualization, and I have a couple of questions that I hope to get some help for.
I have two server boxes that are of similar set up. The differences between ...
0
votes
1answer
44 views
Xen domainU hosts not bridging correctly (Always 192.168.1.122)
I'm trying to set up some domU hosts on a new Xen server, however, I can't seem to get any of these hosts to connect to the local network (i.e. the office's 192.168.0.* range). Running dhclient on ...
0
votes
1answer
103 views
Xen - “'NoneType' object has no attribute 'rfind'” error when trying to create domain with VNC enabled
I'm setting up a Debian Xen server for the first time, and so far it's gone smoothly. However, whenever I tried to enable VNC connections for a domain (by adding a vfb=... line to the config file), ...
2
votes
0answers
72 views
Learning how to build my own linux kernel [migrated]
Reference - http://www.linode.com/wiki/index.php/PV-GRUB#Building_Your_Own_Kernel
In order to work with Xen, a number of options that must be selected:
CONFIG_PARAVIRT_GUEST=y
CONFIG_XEN=y
...
0
votes
1answer
55 views
stock arch linux with pv-grub on linode
I am attempting to use pv-grub on a stock arch linux instance on linode by following this post:-
http://forum.linode.com/viewtopic.php?p=49387
Unfortunately, I am unable to get my pv-grub enabled ...
0
votes
2answers
94 views
dedicated server virtualization, xen or openvz?
I am putting a new server in a datacenter for company use and my company website. I use a lot of VPS accounts and in that world the choices are xen or openvz. I will be using virtualization on my ...
-1
votes
2answers
66 views
Is it possible to run Virtual Machines using another Virtual machine
This might sound like a stupid question but i haven't had the correct answer yet.
If i have a high configuration vps from say Rackspace or any big company, then can i use Xen or any other ...
1
vote
2answers
95 views
Xen 4.1+ with local ZFS storage
I'm speccing out sandbox VM servers for developers at my company. The requirements for the dom0 hosts are: local, deduplicated ZFS storage (no separate storage servers), and Xen 4.1+ (4.2 is ideal).
...
0
votes
2answers
52 views
Cannot login at hvc0
Our LDAP server recently crashed and now we are facing problems reaching some of our servers.
We have a Xen guest for which the login does no longer work. In the logs, the following error appears.
...
0
votes
2answers
69 views
Xen HVM: How to delay the boot process?
I need to give a user access to the console of a Xen HVM domain, for troubleshooting a boot problem. The problem is, the guest boots so fast, it is almost impossible to have the VNC session ready when ...
2
votes
2answers
89 views
Hardening Virtual Machine
I have a CentOS based product I'm looking to distribute it as a virtual machine (VMWare, XEN and KVM) and I have been lately assessing the steps needed to protect the VM.
The VM's data shouldn't be ...
0
votes
2answers
56 views
Xen domU cpu speed change
I've a 2.6GHz dual core machine with 8G memory. I want to set CPU Speed (Change to Hz i.e. 1GHz or 500MHz processors etc) for VM. I could not found it in xm and virsh commands help. Is there any way ...
0
votes
1answer
28 views
Xen Swap File/Memory
Does anyone know if swap memory from a Xen container uses actual RAM from the node, or does it use disk space on the node?
1
vote
0answers
44 views
how to deal with backup & restore of private cloud environment?
using Cloudstack OSS - with NFS as storage backend....
How to deal with VM image backup and restore? snapshot backup is preferred
softwares like PHD Virtual are built for specific Hypervisor: ...
0
votes
1answer
45 views
Xen Issues - Total Memory + Grub Disappeared
I'm pretty much a newbie when it comes to the Xen Hypervisor, either way I installed it on a dedicated server, I just removed OpenVZ since it was annoying me. So, I followed ...
1
vote
1answer
172 views
Sudden problems with iptables not running
I've got a sudden issue with iptables not running on my CentOS 5.8/DirectAdmin XenVPS. All I have done today is install PHP APC and run an update (although I admittedly didn't pay much attention today ...
1
vote
2answers
131 views
Windows Server 2008 network speed slow, Xen 3.4.3 HVM ISO
I've setup a VM running Windows Server 2008 on a host node running Xen 3.4.3-5 and the following kernel: 2.6.18-308.1.1.el5xen #1 SMP Wed Mar 7 05:38:01 EST 2012 i686 i686 i386 GNU/Linux
The network ...
-2
votes
1answer
55 views
Xen hypervisor maximum domu support [closed]
Can anyone please let me know that what are Xen Hypervisor 4.x limitations.
How many virtual machines i can create with what memory and cpu?
0
votes
0answers
51 views
Restart xenconsoled cause xen blank console screen
Our VMs on xenserver dies randomly before, today we found that it was caused by the bug in xenconsoled. I tried kill the xenconsoled process and run it again, this can fix the VM freezing immediately, ...
0
votes
1answer
40 views
Is is possible to use static VIFs on Xen?
Is it possible to use Static VIF names for virtual nics in Xen? Which don´t change on reboot of the VM?
0
votes
1answer
124 views
Xen 4.1.2 unable to boot
I have installed Xen 3.1.2 perfectly, and it's running fine. However since that version is way outdated I just updated it to 4.1.2 by adding the gitco repository and then yum update. It installed ...
1
vote
1answer
32 views
How can I create a ram root disk for pxeboot of xen dom0?
I've been able to successfully boot a xen kernel and dom0 by setting up things according to this link:
http://www.syslinux.org/wiki/index.php/Mboot.c32
However, I'm wanting my root partition not to ...
0
votes
3answers
99 views
rm command not ask before delete
i have centos VPS created using XEN + OpenVZ virtualization.
-bash-3.2# uname -a
Linux host.domain.com 2.6.18-274.7.1.el5.028stab095.1xen #1 SMP Mon Oct 24 22:10:04 MSD 2011 i686 i686 i386 GNU/Linux
...
0
votes
0answers
80 views
Multiple “Domain-0” in XenStore, slow libvirt
I ask xen-users mailing list with no luck.
I have a problem with libvirt on Debian Squeeze, it works slow. For example, "virsh
list" takes 6..7 seconds.
I found this in libvirt log:
...
...
1
vote
0answers
84 views
Xen domU mem-set issue
I'm running into a problem on my xen 4.0.1 server (debian squeeze)
My host has 32G of memory, Domain-0 has 2048 M assigned to it. (scaled down with xm mem-set Domain-0 2048) top in Domain-0 confirms ...
3
votes
4answers
103 views
XenServer: Editing clone configuration before boot
Upon cloning a base image, I need to reconfigure basic settings. Regenerating the ssh host key, changing static IP assignments, setting the host name, etc.
Because of the network setup, DHCP is not ...
-2
votes
1answer
41 views
Clone a Xen instance but add memory to it
I have a machine that has a few Xen instances running on it. I'd like to clone one of them but allocate more RAM to the new clone. How can I do this?
0
votes
2answers
79 views
xl create doesn't bring up console
I've tryed to run VM in Xen 4.2 using xl command (for what I get this should be standard toolstack, while xm is deprecated).
In this case I've the following configuration file
kernel = ...
4
votes
0answers
42 views
xend doesn't bring up the vif interfaces
I'm trying working with Xen and I've tryed to build up a virtual machine in domU.
I'm using the following configuration for the domU
kernel = '/media/home_separata/domU_kernel/boot/vmlinuz-linux' ...
1
vote
2answers
121 views
NAT with iptables to Xen DomU
I am trying to forward packets arriving on the host machine to a virtual machine. Current aim is to forward xxx.xxx.xxx.xxx:3022 to the vm 192.168.10.2:22.
I tried adding the following rules through ...
-4
votes
1answer
69 views
Complete user guide to Xen 4.2 [closed]
Is there a complete guide to Xen 4.2? So far I've tryed googling without success could anyone give some good reference preferably freely downloadable.
1
vote
2answers
117 views
Xen command xl doesn't create a vm but xend/xm does
I'm a newbie to Xen, and I've recently installed Xen 4.2 by sources on my system.
I've found a strange thing I've a VM when I start it via the command "xm create machine.cfg" all work fine, but if I ...
5
votes
3answers
356 views
Backing up Xen domains
I'm currently developing a Xen backup system, however I have met the following problem:
I have two methods of backing up:
doing dd from the LVM snapshot, and tarring it., and rsync it remotely
...
0
votes
1answer
73 views
What does Sourcing of eucarc mean?
I am trying to setup an on premise cloud by using Eucalyptus. I am following the following link
Now in that guide I am not able to figure out what this means:
ensure that the environment variables ...
