Virtualization is a group of software technologies that allow abstraction between layers of a system. This allows separation between the logical layers of the system, providing isolation, flexibility, and/or the ability to run more than one at a time. This differs from most traditional systems where ...

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XCP vm created via xl create doesn't show up in Xencenter neither in xe vm-list

i am running XCP 1.4.90.530.170661 and i have many PV guests running and created via XenCenter. I have created now an openwrt PV guest via the xl create command but it doesn't show up in Xencenter ...
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37 views

Delivering EMC ISM by NETLAB+

I have made an EMC class with 15 students on NETLAB+. I have done the Pod cloning and assigned a single linked Pod to each student. But when students log into the class, everybody is connected, like ...
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113 views

XEN - (magic) networking issue

I have a very strange situation and do not know where to look. I have a XEN installed on Ubuntu 12.04 LTS. My hosting-provider does require, that every new IP my server uses has an own MAC-address. ...
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183 views

Mounting shared memory in XCP/ XEN Server,for storing VM

Requirement vm with 2HDD each 1gb OS will be installed on hdd 1 and required data on HDD 2 I want all my VM running on Xen Cloud Platform XCP 1.1 to use /dev/shm of host machine for HDD1. Is ...
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125 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: ...
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347 views

Open file descriptors, Oracle Java 1.7 on Ubuntu 11.04 (GNU/Linux 2.6.38-8-virtual x86_64)

we are having a problem with the maximum limit of open file descriptors. After configuring the server with the settings mentioned below we test to see if the the max open file descriptor is set to ...
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288 views

Virtual networks connected to a computer acting as firewall (KVM)

I have successfully created a schema like this with VirtualBox, but now I have to do a final project and I would like to do it with KVM and Virtual Machine Manager (virt-manager). I am having some ...
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494 views

VMWare player : Ubuntu 10.04 guest on Win 7 host - network not working

I have installed Ubuntu 10.04 (64 bit desktop version) on VMWare player over Windows 7 host (64 bit). I am unable to access network. apt-get fails and I am unable to browse the internet. I tried ...
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118 views

How to monitor bandwidth on host which uses bridge-util and virtualization

I am running a debian squeeze box with bridge-util and LXC containers. I guess this is a 2 part request. I would like to know what my total bandwidth usage is I would like to see it broken down by ...
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79 views

virt-rescue for Ubuntu

I want to install virt-rescue on Ubuntu 11.10 or Ubuntu 10.04. It could not be found in the repositories. Where can I get it?
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1k views

XenServer 6.0 upgrade pygrub error

Just upgraded our XenServer testmachine from 5.6 to 6.0, one of the vms' (ubuntu-server 10.04 LTS) will no longer boot. Error in XenCenter; 9/11/2011 3:48:23 PM Error: Starting VM 'TestDom-Ubuntu' - ...
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207 views

OpenStack Networking Config

I'm setting up a single node/controller on a RackSpace VM (for testing) I have two interfaces the public one (31.222.162.) and the local network one (10.177.68.) but I dont know how to state the ...
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563 views

LSI 9211-8i won't boot in KVM

I'm running ubuntu 11.04 with an LSI 9211-8i in IT mode with the latest firmware (10). I'm using KVM with VT-d enabled to pass the entire PCIe device through to the guest OS. I have the device ...
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239 views

Virtual PC “The page cannot be displayed” error connecting to iis7.5 site on Win7 host

I setup virtual pc with the Windows XP IE6 VHD to test a site on Windows 7 host. I created a loopback adapter connection on the host. I have several sites on IIS 7.5, I'm able to connect to all of ...
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582 views

how to install Ubuntu over http in virt-manager

I am having a situation where I can not use a CD or PxE boot or wubi to install.I need to necessarily do an http install of Ubuntu.I am basically trying to create a guest OS in a virtualization setup ...
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103 views

Why is connection from Windows Virtual XP hosted on a Win7 box to standalone SQL server slow?

I have an application that will only run on Windows XP and it utilizes a SQL backend server. I am putting new workstations in this office with Windows 7 and installing the software in a Virtual XP ...
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229 views

DOS path not resolving in VM

As a developer, I had our systems team setup a VM of a server to practice an upgrade of an old third party application. This server has its own instance of SQL Server 2000 that's used exclusively for ...
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38 views

Backup KVM running machine safely

I read some solutions to make backups of running VMs, but all take offline snapshots that seems difficult that will work if the VM has high I/O load. I have tested but i have doubts about the process ...
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33 views

OpenVZ container doesn't start, “unable to read inode block”

I'm having some problems with OpenVZ/Ploop. Installed OpenVZ on a brand new thinkserver today. My /vz/ partition is ~5.2 TB large (4x2TB RAID 5). When I try to create/start containers ploop fails with ...
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19 views

VHD to physical disk conversion failed

We have had a happy HyperV running with several VMs until motherboard crashed. On another MB we had to install a new OS, of course HyperV does not see VMs. Tried to use VHD2Disk using a blank ...
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23 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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23 views

No connectivity between azure VMs

In my azure environment, I have 4 VMsx running Windows Server 2012 R2 10.0.0.4 (AD, DNS) 10.0.0.5 (ADFS) 10.0.0.6 (MSSQLSERVER) 10.0.0.7 (IIS) All of the machines are connected by an azure virtual ...
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18 views

ISCSI drives suddenly lost partitions

We have a VM host, and each VM is given an ISCSI volume to boot off of. These ISCSI volumes are stored on a second server. Today, we had to reboot the VM host because ISCSI hosts kept going into ...
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116 views

How to configure VXLAN over linux bridge?

I am using Ubuntu 14.04 which support VXLAN configuration. Currently I can add a VXLAN interface such that: vagrant@ubuntu:~$ sudo ip link add vxlan1 type vxlan id 1 group 239.1.1.2 vagrant@ubuntu:~$ ...
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44 views

How do I configure KVM guest to have Internet access?

I am trying to get KVM working on my Debian server and I am having a slight problem with networking with my guest OS (also Debian). The virtual machine is using the "default" network (without a ...
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22 views

More than 3 virtual disks in XenServer

I have an Ubuntu Server 14.04LTS on a XenServer 6.2 in HVM mode. Is there any way to use more than 3 virtual disks without a full PV? I already installed XenTools but nothing changes. As far as I ...
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12 views

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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136 views

SSH using Agent Forwarding with Windows Host OS, Vagrant Ubuntu Guest OS, and Keepass/Keeagent

Intent: To be able to deploy to lan-example.com from any dev environment; whether it be directly from the virtual OS, or any single-OS system, or even over the internet using ONE SSH key stored in ...
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40 views

Is it possible to virtualize a Genband/Broadsoft M6 voip telephony system?

I work with a company that runs a hosted VOIP platform originally known as the Genband M6 acquired by Broadsoft a few years back. This system is going end of life March 2016 and will no longer be ...
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428 views

XenServer 6.5 upgrade: NVIDIA GRID K1 gives “PAT Configuration unsupported”

We have two Supermicro SYS2027GR-TR2 servers that were running XenServer 6.2 SP1. Each system has one NVIDIA GRID K1 video card installed. We just upgraded the servers to XenServer 6.5 by doing a ...
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34 views

server 2008, SMB issues after changing to virtual network

I have a windows 2008 server that I use as AD, DNS, and mostly for file sharing. I wanted to use hyper-V to add a virtual Linux box for some network monitoring software. So I added the external ...
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19 views

mounting logical volume attached to vm while vm is running

i am experimenting lvm2 and qemu-kvm. and I want to share and ask some questions. at the end of there is appendix what i am doing. a logical volume on host is attached on guest host (vm) as vda. this ...
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122 views

How to convert clonezilla backup image to virtual machine?

I have a 30gB tar.gz disk image of a physical debian machine, created by clonezilla - what's the easiest list of steps to follow to convert it to a virtual machine? Do i have to necessarily make .iso? ...
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53 views

CoreOs VM getting deleted after shutdown on libvirt

I installed CoreOs on libvirt using link https://coreos.com/docs/running-coreos/platforms/libvirt/. The VM is also showing inside Virtual Machine Manager and working fine. The problem is once I ...
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29 views

Bootstrapping an EC2 HVM Instance Store Image

I currently have a process where I dd a disk, install CentOS onto it and upload to AWS. This works great for PV based images. I'm trying to use this same process to bootstrap HVM instances, but I'm ...
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36 views

Can't Create Win 7 VM with RHEL 6.5 VMM

I have a server running RHEL 6.5 that I primarily run VMs on it. The VMs I run on it are all Linux, with the exception of one that runs Server 2008 R2. Yesterday, I attempted to install Windows 7 as ...
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0answers
26 views

ssh server stops on ESXi 5.5 for no reason

I have a ESXi host that I have never been able to access via ssh. I have tried every tutorial I can find on enabling ssh via the command line and the vSphere client to no avail. I enable the ssh, ...
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92 views

OpenQRM installation on Centos - database initialisation runs into timeout

I installed OpenQRM on a fresh CentOS 6.5 from the latest source code as described here: ...
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0answers
142 views

Guest-VM can only ping CentOS KVM host, cannot access anything else

[root@KVMHOST]# ifconfig br0 Link encap:Ethernet HWaddr 00:1E:67:6B:17:2F inet addr:200.200.100.54 Bcast:220.225.255.255 Mask:255.255.0.0 inet6 addr: fe80::21e:67ff:fe6b:172f/64 ...
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274 views

Cannot create windows HVM with SDL in xen 4.4.1

I want to create a win HVM, and set sdl=1. I was able to do so. But after I upgraded to xen-4.4.1, I got this error libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: domain 4 device model: ...
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49 views

Xen memory management

In real machine, I can reserve a certain of memory by editing grub to limit memory,which the machine can use, and then mapping the reserved memory using ioreamp. I can manage these memory and insert ...
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0answers
819 views

Convert VHD to use on QEMU KVM

I try to convert a .vhd file (VPC) and get this error. I tried different .vhd files without success. I tried also with a fresh exported VHD with disk2vhd and backup Hyper-V .vhd. qemu-img convert -f ...
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27 views

Multicasting on guest Operating System

I have 6 guest Operating Systems (windows server 2008) on a vmware 9.0 My host OS is Windows 8.1, And GNS3 installed on the host OS, where I have my topology with 3 routers configure with multicast ...
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33 views

Network error when running multiple Virtual Boxes

I have a Ubuntu 14.04 physical desktop that's running some Virtual Box instances (also Ubuntu) through Vagrant. The Virtual Box instances are configured to use static ip and with "natdnshostresolver1" ...
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50 views

Is it possible to Create a local Virtual Machine (vmWare) from a remote Ubuntu 14.04 installation

I have a bunch of Ubuntu 14.04 machines hosted at a host using their CloudHosting VMWare packages. I have tried to download them but it's not supported. Is there any way to backup my servers and run ...
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322 views

Virtualization-(Cluster) with KVM/libvirt on top of a FC SAN

I'd like to set up a 2-node HA-Cluster based on Ubuntu and KVM running about 30 VM's. Both nodes are connected to a HP MSA(5TB) via Fibre Channel. Multipathing's already working and the nodes are able ...
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90 views

Dealing/Fixing the Ploop issue with OpenVZ — relclaiming lost space

So OpenVZ Ploop has a bug where if users add then delete files the space becomes unclaimed and the disk eventually runs out of space. Now there is a script that fixes that(included below). However, ...
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77 views

Restoring read only domain controller from VM checkpoint

I have several RODC on remote sites, and sometimes power failures corrupts ADDS database which takes some time to recover. I'd like to move RODC to virtual machine (on same server) to be able in case ...
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68 views

KVM virtual IP address not working on HOST, works on GUEST

I have a setup composed of the following: -> A HOST running KVM with the following network configs: # The loopback network interface auto lo iface lo inet loopback # The primary network interface ...
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87 views

Dynamips Virtual Router not pinging external host after bridging

I have setup a virtual router image with dynamips and setup bridging between tap0 interface of the virtual router and eth0 and br0 with commands [root@cisco_host]# brctl addbr br0 [root@cisco_host]# ...