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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81 views

Switching back to libxl from xend without rebooting

I did something dumb: I enabled xend over libxl and started an instance with xend. Now, libxl won't start any instances, even though I got rid of all the xend instances and stopped xend: root@xen1 ...
1
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1answer
15 views

How to prevent openvz container from adding another ip address?

How to prevent openvz container from adding another ip address ? I'm using VETH Container. I used this command to configure the network : vzctl set xxx --save --netif_add ethx,,,FE:FF:FF:FF:FF:FF
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0answers
63 views

How to pass boot paremeters to a XenServer HVM? Is it even supported?

I'm willing to build up a fully automated installation of CentOS 7 over XenServer 6.5 using kickstart. According to XenServer 6.5 Documentation, CentOS 7 is now supported in HVM mode: In XenServer ...
0
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0answers
16 views

hardware requirements for 4-6 VMs [duplicate]

I’m planning on buying HW for running 4-6VMs on my home network, hosting some web-pages and desktops and running an NVR for 3-4 cameras, and have no idea what I can get away with on the hardware side ...
0
votes
0answers
12 views

OpenSUSE Xen Multiple Apache VM's

I am attempting to set up an OpenSUSE 13.2 server with Xen Hypervisor installed. The problem I have now encountered, is how do I route the correct requests to the correct VM instances. Lets say I ...
0
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0answers
35 views

Automatically upgrade virtual machine in load balanced set on Windows Azure

I have been serving web content off of a Linux VM running in Windows Azure, and now want to make a duplicate virtual machine and create a load-balanced set to handle more load and avoid downtime. I've ...
0
votes
1answer
54 views

Convert virtual disk image to physical disk?

I'm trying to use QEmu for Windows to convert a virtual disk image to a physical SSD. But I'm not sure about the syntax for the output_filename parameter. Here's what I tried: qemu-img convert -p ...
0
votes
1answer
30 views

NAT forwarding (whole IP) working only on some ports

Since my hoster doesn't allow briged setups I had to go for a NAT solution to run my CentOS VM on an additional IP and my host machine on the primary IP. Now, I've got a problem since for ports 22, ...
1
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1answer
47 views

How to virtualize a dedicated server [closed]

I have a dedicated server with the following configuration : CPU : AMD Opteron 4386 Cores/threads : 8c/8t Fréquence/burst : 3,1 GHz+/3,5 GHz+ RAM : 64 Go DDR3 ECC 1066MHz ...
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0answers
79 views

How to assign dedicated vCPUs to specific VM on Proxmox (KVM) or what system could do that?

I'm posting this here, because what I've found about the topic is either outdated, incomplete or not suitable for various reasons. I have wanted for a long time to learn how to map specific vCPUs to ...
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0answers
36 views

Filtering KVM guests with IPtables

My partner has a server with OVH that receives a constant variety of ddos attacks, while still staying up. We want to use IPtables on the host to filter the guests VM's traffic. The guest VM we want ...
2
votes
4answers
183 views

Bare metal hyper-visor that supports viewing it's own guests [closed]

I'm trying to understand if it is possible to have a Type-1 Hypervisor (bare metal, no host OS) with the ability to view the guest(s) operating system(s) on the same machine. i.e. I have a XenServer ...
0
votes
1answer
63 views

What it means when Linux has no I/O scheduler

I have some virtual machines running Ubuntu cloud-based image 14.04-1 LTS version. I wanted to see the IO performance of different IO schedulers on the VM so I went to ...
2
votes
1answer
87 views

How much of a performance does using QEMU virtualization incur on Windows?

How much of a performance does using QEMU virtualization incur on a Windows host, when both the host and vm are running the same CPU? Older articles indicate that using kqemu avoided the slow down in ...
0
votes
1answer
81 views

What hypervisors support vGPU? [closed]

Does anyone know if any open source hypervisor supports vGPUs? It looks like XenServer and vSphere are the only two hypervisors that support virtual graphics cards (true vGPU, not passthrough or ...
0
votes
1answer
47 views

ubuntu kvm disk io slowdown after some tyme

Host system: Ubuntu Server x64 12.04 mdadm raid 1 (/dev/sda /dev/sdb) no lvm dd bs=1M count=256 if=/dev/zero of=filename conv=fdatasync avarage ~ 40 MB/s NCQ on disks is disabled WriteCache is ...
2
votes
1answer
129 views

Install RSAT-Hyper-V-tools fails on Windows Server 2012 R2 Server Core

When I try to install Rsat-Hyper-v-tools with powershell command: add-windowsfeature rsat-hyper-v-tools -includeAllSubFeature It fails with error saying that: The source files could not be ...
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votes
1answer
37 views

Xen hypervisor component/plugin development [closed]

I am new to virtualization as a concept, and am particularly interested in Xen. A machine is a complex system composed of many parts/constituents: CPUs (one or more) RAM Hard drive Network card ...
0
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0answers
30 views

Docker: display information for each pulled layer

Whenever I pull an image from a registry, Docker pulls not only the image, but also additional layers. Is there a way to tell docker to be more verbose about the layers? E.g., if I $ docker pull ...
2
votes
0answers
39 views

Ensure docker pulls most current image

Assuming I have registered a repo at Docker Hub, called MyRepo. Assuming I am working on a Docker image called MyImage. Assuming I have configured Docker Hub to build images from Dockerfiles ...
4
votes
1answer
74 views

Count number of allowed CPUs in a Docker container

My specific scenario is the following. I launch a docker container with a specific cpuset: docker run --cpuset-cpus="0-2" # ... inside that container I run a shell script as the entry point and ...
0
votes
1answer
55 views

Juniper SRX210 routing vlans

Ive got a Juniper SRX210 only using 2 ports Model: srx210he-poe JUNOS Software Release [11.4R2.14] WAN ge-0/0/0 up up ge-0/0/0.0 up up inet ...
1
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0answers
43 views

Azure VM - HTTP GET to Rackspace server is too slow [closed]

I'm testing a web service from my Azure VM and the test involves just doing an HTTP GET which returns JSON data from a Rackspace-hosted server. When performing this test from ANYWHERE but Azure, the ...
0
votes
1answer
31 views

Can I run multiple Linux instances within a RHEV-M VM?

My overlords have allocated me one VM and externally-routable IP for use on a certain project, and I've since discovered that the software that runs on this is essentially a singleton (no more than 1 ...
1
vote
1answer
184 views

Hyper-V VM very slow after live migrating to very similar hardware.

I live migrated Windows 2012 R2 Vose from Windows 2012 R2 server to another Windows 2012 R2 server running hyper-v. After the migrate this migrated Vose is running very poorly and uses lot of virtual ...
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votes
2answers
70 views

How do bare-metal/hosted hypervisors relate with hardware and software virtualization? [closed]

Do I understand it properly that Hardware Virtualization is basically a system with a bare-metal hypervisor and Software Virtualization is a system with hosted hypervisor? (And, therefore, because ...
0
votes
1answer
123 views

Recover an oVirt Hosted Engine Crash

I have an oVirt setup, and recently yum updated all packages in hosts and hosted engine. Problem is I can't start the hosted engine. After a while if you issue the command: hosted-engine --vm-status ...
0
votes
0answers
25 views

Effective ways of testing out Hyper-V server 2012 performance?

I am planning to install Hyper-V 2012 server on my physical machine. I would like to see how well it performs (if it's possible). I have 2 identical physical servers on which I will install Hyper-V ...
2
votes
0answers
36 views

Image build system that derives from a base Windows 8.1 image

For our VDI deployment, we have several Windows 8.1 images for target groups that require different suites of applications. The current update procedure requires us to update the OS on each ...
-1
votes
2answers
87 views

How to run a single-threaded application on multiple processor cores efficiently? [closed]

There is this old application that we are using (called Aldfaer) that only uses a single thread. One of its processes takes about 90 minutes to complete at this moment, and we would like to decrease ...
1
vote
2answers
65 views

Multi IPs on a Xen VM with bridging

While I am fairly new to XEN (running under Ubuntu 14.04) I've not had any real issues until now. I have set my networking using bridging and that has worked well for many different machines until ...
0
votes
0answers
33 views

Filter Traffic Between Virtual Machines

I have a machine with Fedora 21 which acts as a host system for two virtual machines. The VMs are made up using QEMU/KVM/libvirt/virt-manager. One VM is running a webserver, the other VM acts as a ...
0
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0answers
182 views

(KVM) virt-manager stuck in password prompt after open VM

so i installed a fresh ubuntu server 14.04 with KVM, i'm connecting with my other ubuntu machine using virt-manager. so after i had permissions problem creating a new VM, i uncomment user="root" and ...
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votes
2answers
71 views

Video memory required for desktop virtualization [closed]

I am planning to set up 3 virtual desktops using vmware. I have this server with video memory of 32mb and 32 GB RAM. What is the recommended video memory for this set up and is it possible to upgrade ...
0
votes
2answers
49 views

Why does an OpenVZ host show processes running in a container?

My OpenVZ (debian) host environment has only the minimal packages installed. Now I was irritated to see a mysqld process in top when the mysql package is installed and running only in one container. ...
1
vote
0answers
41 views

Cross-platform filesystem watcher, running in VM watching host?

Can anybody suggest a way to copy data from a VM's host to the VM[0] in way that is cross-platform across hosts (i.e. Windows, Mac or Linux)? Right now, I'm achieving this by running rsync in the VM ...
1
vote
2answers
58 views

Connecting a LAN drive to Windows 2008 / 2012 VM instance on Google / AWS / Azure

Scenario: Our office uses a Sage software on multiple workstations. The software is individually installed on each workstations, but the database is stored on a server tower that has shared access to ...
0
votes
1answer
28 views

How to add Virtual Hosting to two existing VM servers

I'm trying to run two Ubuntu VM's on one machine, each running a separate LAMP stack serving different websites. Is it possible to use Virtual Hosting to accomplish this? I've read that it's ...
1
vote
1answer
79 views

XEN Guest error cannot open display

[XEN - dom0] Ubuntu 12.04.5 server x64bit , using it on CLI Mode - no GUI installed [domU - guest] HVM guest created via configuration file, I Determine the started DomU port attached with : # xm ...
0
votes
0answers
14 views

Is a Beowulf cluster a solution for me? [duplicate]

Background I'm an undergrad working on an scientific experiment. Till now I was pilot testing our one of the program on Ubuntu 12.04 and now I need to deploy it. The PC on which I tested the program ...
1
vote
1answer
251 views

How to convert physical server to Azure VM

I am running Windows 2008 R2 on physical server (Dell Machine). Now I want to convert the physical server to Azure VM. I have tried with disk2vhd utility but I am getting the below error while ...
1
vote
1answer
252 views

VPN SSTP windows client can not ping or connect to VPN server but it can talk to every other PC on the local LAN that VPN server is on

So I have an SSTP (with native Windows client) working fine in a sense. My windows client's local IP is 192.168.10.11 , so its local network is: 192.168.10.x The Remote VPN server is behind a router ...
0
votes
2answers
36 views

during snapshot merging… are deleted transactions ignored?

If i take a snapshot in vmware/vbox for example and soon after i delete a 5GB file.. the snapshot delta file will grow +5GB with the deleted files content to allow it to be recovered by restoring the ...
0
votes
1answer
33 views

Vmware ESX 5.1- Consolidate a VM

One of my virtual machines needs consolidation. If I start Consolidation, will my vm be unaivalable, or it will continue to work and do the consolidation in the background? thank you in advance for ...
0
votes
0answers
30 views

Systems freezes + Memory issues

I have a Hyper-V 2012 R2 server and increased its RAM to 32GB from 16GB. (for a small business). 1-2 months after the upgrade the system started to freeze seemingly randomly. Whether it was posting ...
0
votes
1answer
49 views

FreeBSD10 resize virtual server image to smaller partition

I have a VPS on the new Vultr system and I am noticing that they do not have pv-grub ready and available which makes my dilemma even more interesting. I have a 40gig image I need to migrate to a 15 ...
0
votes
1answer
40 views

How to P2V a RAIDed IBM Netfinity 7100 W2000 server

I have a legacy machine from IBM (A Netfinity 7100) running a Windows 2000 SP4 server OS. We are trying to move it to a virtual environment (KVM under Linux) to decommission this old, costly hardware. ...
1
vote
1answer
70 views

Vios x LPAR Clients - SEA relationship

I am developing a script to list all SEA adapters in a VIOs, their related physical, virtual adapters, along with their status and VLAN TAG ids. I wish to include on this script the VIO clients ...
0
votes
1answer
34 views

Can I install Backup Exec in a guest

We want to have a single physical machine as host, having several guests. One of the backup solutions we're considering is using Backup Exec to backup to external disks or tape, having Backup Exec ...
0
votes
0answers
48 views

how to create virtual private server in openVZ with two physical interfaces

I have couple of queries What are the possible ways to create a virtual private server with two physical interfaces(eth0 and eth1) in openVZ? if not how it should be achieved ? vzctl set 101 ...