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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4
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1answer
335 views

Ext4 cache options on a virtual machine

I'm trying to speed up a standup of virtual machines used for development / automated test environments and wanted to verify some assumptions about disk writes caching. I'm using ext4 for the root ...
3
votes
1answer
243 views

How can I stop Azure from randomly replacing network cards on VMs?

Azure seem to have the habit of randomly changing the hardware configuration of virtual machines, without telling anything to the user. This is of course mentioned in the documentation, although ...
3
votes
1answer
917 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 ...
3
votes
1answer
403 views

I can't install windows 64bit on Virtualbox headless

I'm trying to install Windows2008r2 64bit on a Ubuntu 12.04 64bit host. After created the VM (with --ostype windows2008_64 I boot up the installation iso but windows says: Attempting to load a 64-bit ...
3
votes
1answer
140 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' ...
3
votes
1answer
499 views

(Virtual) Windows Server console: Black screen

When connecting to our virtual Windows 2003 Server (SBS 2003 SP2) via a normal RDP session, everything works fine. However, when connecting with /admin to get to the console session, the following ...
3
votes
1answer
645 views

With CentOS 6 and LXC, “ifconfig” is unable to see network interface (but busybox “ifconfig” works fine)

I've just started working with LXC under CentOS 6 (via the libvirt adapter). If I create an LXC container, I'm unable to see any network interfaces when using the native system tools: # ifconfig -a ...
3
votes
1answer
162 views

Is there any simple, free tool to track VM dependancies to linked-clones in VMWare?

We have a few "base installations" of various OS environments that we use to create linked clones in VMware Workstation. Sometimes, to save space and because speed is of secondary importance, those ...
2
votes
1answer
145 views

Azure public endpoint SSL termination

In Azure, is there any way to set up an HTTPS endpoint directly on the public VIP, as opposed to joining each VM to a load balanced set, so that I can associate this endpoint with the SSL certificate ...
2
votes
1answer
547 views

Nginx Virtual host 403 Forbidden

I have just brought a domain name (example.com) and have setup a URL frame redirection to my server's IP XXX.XXX.XXX.XXX, however I am getting a 403 forbidden error. I can access pages fine via the ...
2
votes
1answer
449 views

vanilla ubuntu-vm-builder on i7 aborts aborts (with PAE?)

host: intel i7-4* cpu, running linux kubuntu 14.04 guest: attempting to create. ubuntu-vm-builder kvm saucy eventually, Get:1 http://archive.ubuntu.com/ubuntu/ saucy-updates/main ...
2
votes
1answer
270 views

VMWare vSphere 5.5 management interfaces unreachable

I've got a vSphere 5.5 Essentials Kit; One of the hosts, a Dell R410, is running vSphere 5.5 and as of yesterday it is unresponsive to any of the management tools. I've tried the following: Web ...
2
votes
1answer
83 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
votes
1answer
40 views

Saving the State of an Application using App-V or some other type of Virtualization Technology

I have an application that I would like to be able to create "snapshots" of (sort of like you might do with a virtual machine). Basically I would like to be able to allow the user to do a bunch of ...
2
votes
1answer
162 views

Copy an Amazon EC2 Instance to use locally

Ok, so we have a spare server I have installed Debian Wheezy on, and setup Xen on for virtual machines. It has better performance than all our ec2 instances combined, and will cost less to run (for a ...
2
votes
1answer
305 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 ...
2
votes
1answer
399 views

Does CloudStack support the Open Virtualization Format (OVF)?

The questions says it all. Can someone tell me the answer please? I have researched but I'm still not sure. Thanks.
2
votes
1answer
528 views

Anyone using Archipel in production for managing virtual machines?

I am getting ready to deploy a new server for my company. We intend to use virtualization mainly for security but also to help with versioning and other issues. We have decided to use openvz. Now I ...
0
votes
0answers
68 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 ...
0
votes
0answers
1k 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 ...
0
votes
0answers
30 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 ...
0
votes
0answers
39 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" ...
0
votes
0answers
54 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 ...
0
votes
0answers
420 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 ...
0
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0answers
105 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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0answers
84 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 ...
0
votes
0answers
71 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 ...
0
votes
0answers
97 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]# ...
0
votes
0answers
65 views

clonehd takes 2 hours for a 100GB disk. Expected?

I have a VirtualBox image using VDI and flexible size. Right now the physical DVI file 94GB. The host is an Ubuntu server and the guest is a CentOS 6.4 with ext4 partition. The host is using a sata ...
0
votes
0answers
277 views

windows server 2012 backup

Our backups on our virtual windows server 2012 R2 which is hosted on Hyper-V server 2012 R2 have been taking at least 3 hours longer than they used to. We use windows Server Backup for nightly backups ...
0
votes
0answers
228 views

CentOS Host KVM Virtual Machine running a Windows VM - No internet access

I've installed a KVM virtual machine on a CentOS host using libvirt. I've also set up a bridged connection from the interface en0:4 running on IP x.x.x.15 to br0. (The IP is a public one). Running ...
0
votes
0answers
267 views

Error while booting VMDK in VMWare Player; UNMOUNTABLE_BOOT_VOLUME

Hi all and thanks in advance for taking the time to read this. My employer has provided me with three VMDK files, each representing a different hard drive of a VM. My aim is to get these converted to ...
0
votes
0answers
170 views

tomcat virtual host 404

I have a tomcat instance running and I am trying to add virtual hosts to it. I have modified the Server.XML file which consists of following host def <Host name="www.test.com" ...
0
votes
0answers
15 views

Are Xen 4.1 virtual machines compatible with XCP?

I have a couple of vm installed with Xen 4.1 (basic Xen Hypervisor), now I would like to install XCP packages on my wheezy server. I've read that XCP took control of the server disks and network ...
0
votes
0answers
446 views

Kickstart “Unable to download kickstart file. Check parameter”

So I'm using 2 VMs (CentOS 6.0), one acting as a build server, the other is a new server I'm trying to build with a kickstart. When I start the VM for the new server (with the build server already ...
0
votes
0answers
34 views

Boot to last VM status on XenServer reboot

I have a Citrix XenServer 6.2 on a non-prod enviroment, which means that could be affected by power outages from time to time. This server has a lot of VMs, some of them are power on and other not. ...
0
votes
0answers
973 views

ESXi 5.1 SCSI and NMP Errors Filling vmkernel.log

On a group of ESXi 5.1 systems, I am seeing the following errors every 5 minutes or so: 2014-04-04T11:22:45.374Z cpu1:8193)NMP: nmp_ThrottleLogForDevice:2319: Cmd 0x1a (0x4124022be3c0, 0) to dev ...
0
votes
0answers
29 views

Jumphost VM not able to communicate with LAN

I have setup a jumphost VM on WinXP. It has 2 NICs. NIC1, which is the LAN, has the following IP settings: IP: 10.0.0.1 /24 (No default/ DNS configured) NIC2, which has external connections, has ...
0
votes
0answers
53 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 ...
0
votes
0answers
137 views

How to diagnose sporadic performance issues?

I have a web application with very varying response times and can't find out what causes that. That's the (quite complicated) setup: Powerful (i7, 32GB RAM) dedicated server in a German data center, ...
0
votes
0answers
863 views

Citrix XenApp FOSS Alternative

I'm looking for some Free and OpenSource Alternative to Citrix XenApp. I need to serve some Apps to Linux boxes from a Windows host. I've came across Ulteo OVD but it lacks Native Clients and Seamless ...
0
votes
0answers
160 views

Proxmox “File Does Not Exist” Error

Something happened to my Proxmox server and now some VMs won't boot. When I try to boot one in particular, I get the message: proxmox:~# qm start 103 volume 'Backups:103/vm-103-disk-1.raw' ...
0
votes
0answers
121 views

opensm reports - Invalid requested MGID. What does it mean?

I've been working on a virtualized SR-IOV infiniband interface under Xen. If I run the OpenSM daemon under Dom0 IPoIB appears to work in the passed through VF. However, opensm starts using a lot of ...
0
votes
0answers
89 views

Hyper-v takes a long time to create snapshots

I'm not sure when, but I've noticed as of recently, whenever I go to make a snapshot of certain machines, it hangs at 2% for a good while and then eventually finishes (fairly quickly, actually). I ...
0
votes
0answers
79 views

How to detect on Linux that given MAC (HWaddr) is a virtual MAC and will change after rebooting?

Is it possible on Linux to detect automatically that given MAC (HWaddr in ifconfig output) is a virtual MAC and will change after rebooting. or alternatively is there a way to detect virtual network ...
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votes
0answers
51 views

how to programatically create an ubuntu vm

I have to create an ubuntu virtual machine within kvm/libvirt with a specific configuration for a specific set of tasks. I want to do it in a programmatic and reproducible way. I checked out ...
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votes
0answers
225 views

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 ...
0
votes
0answers
60 views

How can I virtualize a running server but exclude directories so the resulting image is smaller than the drive

Following situation: There is a Ubuntu 10.10 Server running with many custom configurations and programs (can't set it up from scratch). One of these programs stores a lot of data (> 1TB) in ...
0
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0answers
120 views

Converting Physical machine to Hyper V VM

I'm running a Physical machine with Windows 7 Ultimate mainly as a file server with 2 hard drives with all the file content stored on D drive with C mainly for OS. This file server is accessible by ...
0
votes
0answers
129 views

how to carp two interfaces on same node?

I have this CentOS machine with 2 interfaces. eth0--> br0 (.10) eth1--> br1 (.11) Although part of the same network, each interface is being fed from a different switch. I use each bridge in ...