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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18 views

Can I convert a physical non-bootable sata volume to a VHD image for mounting in a VM as 2nd volume?

I'm converting physical machines in the office to virtual machines using Disk2vhd, and it doesn't list the second physical hard drive that is in one of the physical machines. Does that mean I cannot ...
2
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309 views

How to increase CPU core speed of a guest to maximum of Citrix Xenserver Host

There is a Citrix XenServer 5.5 (HP ML370 G5, Xeon 2GHz) on this Server there is a Windows Guest (Windows 2008 R2 x64) under Properties I set 4 CPU Cores with max prio. But if I check with CPU-Z the ...
2
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0answers
46 views

Modify VM in OVA

I have an OVA that contains a vApp with 9 VMs inside. I need to make a change to the drive contents of one of the VMs in the OVA. The OVA takes a very long time to export from vSphere (24 hours). Is ...
2
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0answers
88 views

Recompose a VMware vSphere machine without personal application data loss?

Our organization has converted a large percentage of our employees to VDI. Our logic is that we create a master image for each linked-clone pool, dedicate each linked-clone pool to specific purposes ...
2
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0answers
156 views

Can't lock vz with proxmox

I would like to backup my virtual servers to move them away. And when i have started the backup process then i only see this every time: Feb 09 08:40:34 INFO: Starting Backup of VM 101 (openvz) Feb ...
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376 views

Debian Squeeze Preseed Installation “The current kernel doesn't support the Logical Volume Manager. You may need to load the lvm-mod module.”

I'm attempting to install Debian Squeeze via an instalinux.com image pre-seeded with more or less default settings. (Only notable addition is the openssh server, which is a clickable option in the ...
2
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0answers
175 views

Xen and Turbo Boost

Running the Debian Squeeze default Xen, I am unable to get any of the CPU frequency scaling stuff going. As soon as I revert to the standard kernel I get it. Digging through the internet it seems ...
2
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239 views

How to configure opennebula for allowing a cluster private network to host images with public IPs

I am installing open nebula 3.4.1 for running virtual machines a (kvm based) cluster made of 5 computers: a front-end machine having 2 network interfaces and 4 slaves machines with a single network ...
2
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168 views

Performance Implications of running multiple Virtual Servers using one base virtual disk?

I tried looking through old questions, but couldn't find one that hit this exact question. In VmWare's documentation on Snapshots, they mention utilizing them for a "process tree" setup. This would ...
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48 views

Convert manual network commands into networking scripts

On a dedicated server with an hypervisor as host and Fedora 20 as guest, I successfully used the following commands in the guest VM to enable network with a IP failover: ip route add ...
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27 views

XenServer pool, unable to access certain networks from 2 servers in pool

I have Xenserver pool of of 3 xenservers, at version 6.1. After we got a serious DDOS attack on our network, all servers got rebooted (whole pool of 3 servers got restart and entered into maintenance ...
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54 views

Hypervisor The operation cannot be performed while the object is in it's current state

I attempted to reboot one of my VMs in the Hyper-V Manager. It's a Centos VM and all of my other centos machines are behaving as they should although I can't get this particular one to boot. I'm a ...
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42 views

How to handle virtual environments on a secure network

We do embedded software development. As such, we use a wide variety of tool sets for the many different targets that we work with, and we frequently move from one project to the next. Developers ...
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0answers
39 views

IBM BladeCenter H networking

I'm new to the IBM BladeCenter H, and I'm trying to figure out the networking side of it. I've installed a windows server OS on one of the blades, and am trying to fiddle with it's network setup ...
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0answers
91 views

Virtual Machine IP address type changed from static to dynamic

I am testing VMM in a lab environment, I have one VM host machine with one physical network adapter that has been allocated an IP address in the 192.168.1.0/24 subnet on a router. I have create ...
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0answers
22 views

Would using containers be appropriate for a virtual lab?

So far i have been running a VM lab using virtual box, however functionally i cant see a difference between using virtualbox and a container based virtualization application, such as lxc. This is ...
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70 views

VDA Disk Fail / Virtual machine corrupt

I am hoping I can get some help here. I have a server that is hosted with a very large server hosting company and today the server became unavailable. On contacting the company they said that the ...
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0answers
68 views

Red Hat Virtualization, slow DB writes or network from virtual machine

I am running JBoss on both a physical machine, and a VM that runs within that same physical machine. The JBoss instance on physical machine is operating fast, but the JBoss on VM is slow (several ...
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44 views

How to use kexec to do a live upgrade of hotswap ram on a CentOS vm image?

Just as the question states, is there a way and what's the best method todo a live ram upgrade with kexec?
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456 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
56 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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140 views

Сan I use IOMMU for VT-d to give each virtual machine one at a time GPU?

If I use VMWare with 4 virtual-machines and 4 GPUs (nVidia Quadro/Tesla), then can I give (move) some devices to different virtual-machines for each by a single card? If I have one of these CPU, then ...
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117 views

How to install Gitlab in a VM on a production server?

I have a production server running Ubuntu 12.04 and I would like to install on it a VM with Gitlab (using Vagrant and Virtualbox). Let's say that the address to access Gitlab is gitlab.mydomain.com . ...
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151 views

IPv6 Routing / Subnetting

Recently I have installed Citrix Xen Server 6.2 on a machine. My Provider (Hetzner) gave me the IPv6 Subnet 2a01:4f8:200:xxxx::/64. Followed an article in the providers wiki (1) i got it working and ...
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431 views

How to config libvirt network setting about disabling dnsmasq “except-interface=lo”?

Here is the thing. My VMs run with libvirt and use default network libvirt-provide, and I've mad each VM registers its hostname to dnsmasq set by libvirt. so I want to look up its hostname for ...
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95 views

Windows User State Virtualization guide

Microsoft have a concept called User State Virtualization (USV) this is a solution based on redirecting some of the profile folders to a central server. For laptops it also means using offline files ...
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351 views

Ghost “vlan 0” tags added to ethernet frames in CentOS guest under OpenStack

I'm trying to debug an issue involving a KVM virtual machine instance where the instance doesn't respond to network requests when the source is on another physical machine, which is on the same subnet ...
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53 views

OSPF on XEN host running several VMs

Is it possible to set OSPFs areas in a XEN environment to setup a virtual cluster? Main intention is to avoid a external router since all VMs will run inside the same machine.
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160 views

Cannot upgrade xenserver,pool master changes automatically to other server

I need to upgrade my XenServer pool of servers from 5.6 to 6.1. The problem i am facing is that when i shutdown pol master to boot it from CD, then it other member in the pool become the pool master ...
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0answers
312 views

Route specific network traffic through vpn in virtualbox guest

I am running OSX with a windows server 2008 guest in Virtualbox. My goal is to route some of the network traffic in the host through the server guest. This is because the win2008 server has a VPN ...
1
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0answers
219 views

ESXi 4.1 CentOS 6.X eth0 unnavailable

I don't usually ask for help so directly, usually google have all i need but this time i'm seriously lost. Hope you can help me .s The thing is, i have a server with Vmware ESXi 4.1 and 5 already ...
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1k views

Can not display Proxmox console due to Connection time out

When I try to open console in proxmox ve nothing happens and I see this error in logs: no connection : Connection timed out TASK ERROR: command '/bin/nc -l -p 5900 -w 10 -c '/usr/sbin/qm vncproxy 100 ...
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68 views

Setup cloadmin on Centos installed in LVM

I installed CentOS 6 with default LVM partition pattern. according to this pattern Can I use Cloudmin and store KVM Disks in LVM as Logical Volume?
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150 views

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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0answers
34 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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0answers
110 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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159 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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122 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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217 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 ...
1
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0answers
468 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 ...
1
vote
0answers
107 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 ...
1
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0answers
62 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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0answers
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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0answers
204 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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486 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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519 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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102 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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643 views

need some way to convert QCOW2 to OVF or open QCOW2 on WINDOWS

is there a way to convert QCOW2 to OVF? or is there a way to open an QCOW2 on WINDOWS (preferably free/open source)? the problem is that ubuntu's virtual machine manager was used to create the image ...
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0answers
210 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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0answers
50 views

Suitability of staging/dev sync software such as VMLogix stage manager

I am planning to setup a dev/staging/QA type environment on my home PC. I have a second HD ready for a Windows Server 2008 install (which I have). I have come across products such as VMLogix Stage ...