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 Reclaim Space from XenServer?

I found that the XenCenter storage tab claims there is 1096.6 GB used of 1107.7 GB total (708.5 GB allocated). It appears that some space has been eaten and not released. The SMLog shows: [13816] ...
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1answer
105 views

Very high load during pvmove in domU

I had a pretty bad time this evening. I had to move LVM2 LVs from one PV to another (source PV backed by NFS stored vdisk, target PV backed by an iscsi LUN). Moving small LVs of ths VG (few gigabits) ...
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1answer
440 views

Intel VT enable but not found in xenserver

I have an IBM 206M with this CPU --> Intel Presler Pentium D 950 Socket LGA 775 P4D 3.4 Ghz 800Mhz FSB 4M Cache EM64T. It has Intel Virtualisation tecnology. But when i want to install xen server, the ...
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0answers
68 views

How does Xen resize VMs without shutting them down?

I'm experimenting with Xen on a spare machine and I noticed that it can resize the RAM and CPU allocations of my VMs without shutting them down first. VirtualBox, VMware Fusion, etc. can't do the same ...
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2answers
2k views

How can I configure access to pfSense on Xen

I have a new Xen installation on which I want to run virtual machines. My hoster provided me two separate IPs in different subnets, say x.x.x.x and y.y.y.y. I want to set up pfSense on Xen and ...
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0answers
249 views

Virtual Allocation Unreasonably High

Just upgraded our pool to Xenserver 6.2 and installed a brand new host, also with Xenserver 6.2. Was excited about the new features since Xenserver was fully open-sources (over-allocate ram, ha live ...
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0answers
125 views

Error when enabling HA on Xen Server

We have 4 Xen servers - 6.2 build 70446c - one shared storage - accessible via NFS. We disabled HA in order to solve some issues with a live migration that was stuck. I put the master on that pool in ...
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1answer
96 views

Xen doesn't boot after install [closed]

I tried to setup Xen by the instruction released on the site of my hoster. I installed Xen, completed RAID setup as it is told in the instruction. Rebooted and succesfully connected to Xen from ...
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2answers
306 views

DRBD Madness on Virtual Environment (XEN)

Right now I am using DRBD to replicate two directories (/var/www and /var/spool/mail) on two different XEN VPS's and they're 7000 Miles away from each other! on the top of that I am using a ...
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2answers
305 views

DRBD Dual-Primary Obstacles

I have DRBD installed and configured on two different servers, everything is working as expected but I am having a horrible I/O disk read/write speed and network latency like crazy, my shared ...
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1answer
257 views

How to use the same IP for dom0 and one domU in XEN

I have currently a Xen on a debian wheezy dom0. I have 6 (public) ips and I would like to setup 6 VMs (each using one IP). To keep access to dom0, I'd like dom0 ssh to bind on one IP port (lets say ...
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1answer
168 views

Configuration of a small-scale xen server

We are looking for good practices for setting up a xen server (4 cores, 32gb ram). There will be 6 VM (+ dom0), running personals servers (probably low CPU demands). Once the system will be ...
0
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1answer
393 views

Trying to create an ElementaryOS PV guest on Xen

I am trying to install ElementaryOS as a pv guest on my server for testing purposes. Elementary OS is a fork of Ubuntu Precise. Elementary does not come with PV support, however, I can obtain the ...
0
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1answer
236 views

Cluster IP Address in HA Environment CentOS (5.x)

I am in the process of installing High Availability CentOS (5.x) setup with Fail-over capacity, I have 2 identical XEN VPS's in two different locations, every VPS has a private IP and a public IP, I ...
2
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1answer
422 views

Xen Dom0 could not find boot device (or any disk)

I have a brand new DELL server running SLES11 SP1 where I am trying to install my very first Xen Hypervisor. So I installed "Hypervisor and Tools" via YaST (excluding graphical elements), which ...
1
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1answer
178 views

Installing DRBD on XEN CentOS 5.8 (Stable)

I am trying for days to achieve HA with fault tolerance between my existing two XEN VPS's one located in Tokyo and the other located in US (both have the same setup and the same configurations, I am ...
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3answers
2k views

XenServer Guest PV - Serial Port RS232

Is there any way how to forward (passthrough) physical serial port to XenGuest PV system? I need to be able configure serial device with virtual server on XenServer 6.2. I’m looking for some like ...
2
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2answers
2k views

Error running xe sr-create

I'm trying to add a new SATA drive (SSD) as a local SR. XenServer may have seen the drive before, but I don't recall every doing anything with it. I'm attempting to run this command: xe sr-create ...
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0answers
159 views

Xen 6.2 guest IP Assignment

so basically I have written a provisioning system that provisions from a billing system onto XEN. Right now I am assigning a DHCP IP to the guest on boot. The host access the client server via ssh and ...
3
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1answer
152 views

Smart solution for XenServer firewall?

I've been searching for a smart solution for a XenServer firewall for about a month now. The documentation for the new default networking backend "openvswitch" is not that detailed and I can barely ...
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0answers
678 views

CentOS 6.5 Xen Virtual Machine Issue 'this function is not supported by the connection driver'

I am trying to segment my system into a number of virtual machines but just cant seem to get this to work. I think I am close but not quite there. I have install xen, virsh, xl etc and I am using ...
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0answers
65 views

Xen DomU images running on Ubuntu 12.04

I have backed up the contents of /etc/xen/ and /var/lib/xen and have installed Ubuntu 12.04 hoping to migrate off of CentOS. I am attempting to test some of these images and am receiving some odd ...
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0answers
94 views

How can I export a XenServer virtual machine with all its snapshots?

Is there a way to export a virtual machine running on XenServer with all its past snapshots? I have tried to export a VM through XenCenter (right click on the machine and "Export..."). After importing ...
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3answers
468 views

Changing iptables chain from port based to ip based

Im working to limit access to a new XenServer 6.2 installation. The default iptables rules on the boxes have a RH-Firewall-1-INPUT chain that exposes quite a bit to the outside world. Without going ...
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1answer
758 views

need help SolusVM Xen-pv error

I recently use Solusvm and xen and I have a problem with xen-pv there is a xen-pv template by default with the solusvm Centos-5.3-x86 I have created a machine to test it but I have this error : ...
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0answers
567 views

xen hotplug can't add vif to eth0: operation not supported

I am new to xen and I am trying to get a domU running but I am having problems with it. I think my network card might not support bridging which is bizarre. This is the error I get when trying to ...
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1answer
925 views

xen-create-image does not create inird or initramfs image and domU does not starts with system image

I have Fedora 19 as Dom0. To create image I run # xen-create-image --hostname=debian-wheezy --memory=512Mb --dhcp --size=20Gb --swap=512Mb --dir=/xen --arch=amd64 --dist=wheezy After generation ...
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1answer
619 views

smartctl or hddtemp for xvda [closed]

I'm trying to check the state of the drives on a remote server running Debian wheezy. I'm using a software RAID10 on top of, I guess, xen, since the entries in /dev are /dev/xvda and /dev/xvdb But ...
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1answer
1k views

Xen dom0 reports incorrect amount of RAM with dom0_mem set

I've done a fair bit of searching about this, but have found nothing that answers my question. I have a system with 6GB of RAM which acts as a Xen server. For reference, it runs Ubuntu 12.04. I've ...
3
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1answer
831 views

Using ZFS or XFS on a Xen guest running Linux

Background: I'm investigating the viability of using a filesystem other than ext3/4, with the ability to run snapshots for backup and rollback purposes. The servers under consideration are mailbox ...
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1answer
1k views

Xen dom0 bridge interface drops a lot of RX packets?

I'm running Gentoo Hardened as Dom0. It also acts as a router/NAT. There's a bridge interface called br0 which contains a pci-e wlan card, ethernet nic & domU. bridge name bridge id ...
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1answer
540 views

HP ProLiant DL160 Gen5 Virtualization

we want to create some vm's on older server. Its an HP ProLiant DL160 Gen5 with an Xeon 5405. So by the intel specs (http://ark.intel.com/products/33079) the cpu included the VT-x technology. But ...
2
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2answers
830 views

Xen VPS not reflecting the RAM upgrade using xm mem-set

I'm trying to upgrade RAM on a Xen VM without reboot. Although it looks working from the host node, the VM isn't picking up the upgraded memory. Upgrading from 756 MB to 1024 MB. Below are the ...
0
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1answer
239 views

Monitoring performance metrics from Xen (xend) with Java

I need to write a Java application that is collecting and monitoring (remotely and local) performance informations and metrics from a Xen hypervisor. This Java application should fetch the same ...
0
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1answer
211 views

XEN configuration on dedicated server at 1&1

I am just trying to install first time VPS on my dedicated server from 1&1 (12HT CPU, 30 GB RAM). The dom0 is using DHCP to get it's network configuration with ip 87.106.73.113 on eth0. I have ...
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2answers
845 views

Setting Up Xen and Network Bridge on Debian 7

Setting up Xen and Network Bridges on Debian 7 Hi there. So i am finally going to try out some virtualisation on my new dedicated machine, however i am having some problems / confusion on setting it ...
0
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1answer
576 views

Server hangs after typing reboot command

I have a Debian Wheezy installation with Xen in kernel. All is fine but ... when I type a reboot command or shutdown -r now, my server is stuck and I see only that info on screen: INFO: task ...
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2answers
3k views

XenServer Shared Local Stage

I am new user of XenServer 6.2. I have multiple servers connected to Pool/Cluster. Each server has 4 HDD with sw raid10. I would like to make local storage shared because of need quick migration. ...
4
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1answer
2k views

How to get virtualized SR-IOV Infiniband interface UP?

I've spent several days on this now and I've managed to get SR-IOV working with the Mellanox Infiniband card using the latest firmware. The Virtual Functions appear in Dom0 as 06:00.1 Network ...
0
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1answer
128 views

Can I back up my Xen-based VPS Remotely?

I have a Xen-based VPS instance of Ubuntu Server 12.04. I'd like to maintain my own offsite image of my install. The vendor does offer a variety of backup options for additional costs. I'm doing an ...
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1answer
156 views

Remus or alternatives

Is it possible to set up Remus to act as a high availability server across 3 locations. Has anyone set up something like that. That is A would be main site, which would have an HA set up at B, and C ...
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0answers
286 views

FreeBSD XEN kernel not booting in XenServer 6.2

I have a XenServer 6.2 host, and I am trying to get a FreeBSD-9.1-i386 guest to run in PV mode. The installation of the guest is fine, but after a reboot with the new kernel the system does not boot. ...
0
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1answer
397 views

How to bond NIC on a virtual machine?

I'm puzzled about this process. Historically when I've setup an LACP bond on a piece of physical hardware I have to create the analogous setup on the switch. How does this work with a virtual machine ...
0
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2answers
1k views

Blocking STP Traffic

I am using Xen virtualization with a bridged mode netwrk. I noticed that there is a lot of spanning tree (as understand) traffic coming from a network. Such as: STP 802.1d, Config, Flags [none], ...
3
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2answers
11k views

How to change boot device on vm installed on Citrix Xen Server to DVD

I have installed Centos 6 on my new Xen Server (XenServer release 6.2.0-70446c). Everything went smooth. System is working fine but now I want to change boot device on that VM to boot from DVD (iso ...
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2answers
1k views

Alternatives to bridging infiniband ipoib within xen domains?

I've installed xen-hypervisor-4.1 package onto an Ubuntu 12.04.3 server. It has an infiniband adaptor installed and I run IPoIB with it. What I'm wanting to do is provide the ipoib to one or more ...
2
votes
2answers
167 views

Why would you use Xen as opposed to OpenVZ for trusted Linux-only host/guests? [closed]

Every time I need to create VPSs out of one of our machines, I (re)think the virtualization technologies, and seem to end up with OpenVZ being the most suitable for performance reasons when all I want ...
2
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2answers
1k views

Considering XenServer: mixing hardware configurations?

I'm having an internal debate over using XenServer and hoping for some info from 'those who are more informed'. Specifically: VMWare states that it's not a great idea to mix hardware of different ...
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1answer
934 views

Xen USB pass through

Running the Xen (Debian). I want to access the iKey USB dongle from Windows DomU. I have 2 PCI: lspci: 00:14.0 USB controller: Intel Corporation Lynx Point USB xHCI Host Controller (rev 04) 00:1a.0 ...
5
votes
2answers
2k views

RHEL Clones (Centos, Scientific, CERN) network installation on XenServer 6.2

I'm trying to install a Scientific Linux CERN 6 guest on XenServer 6.2 through the network with PXE Booting but it hangs in the message: mounting /tmp as tmpfs... done I'm not using the most ...