3
votes
0answers
22 views

Disable buffering in a VM configuration

I am executing some benchmark using a DBMS and virtual machines. And I am using this command free && sync && echo 3 > /proc/sys/vm/drop_caches && free on each Guest, and ...
0
votes
0answers
39 views

How to decrease the RAM and Cores for sometime

I have 9 VMs running Ubuntu 12.04.I am using resources from GENI ( Global engineering Network Infrastructure ) to set up topology and i reserved resources with the following configuration. RAM - 4GB ...
0
votes
1answer
31 views

How to write shell script on VMDK to derive configuration

I have several VMDK files and I would like to write a shell scripts to derive configuration (i.e. No. of CPUs, RAM, NIC, HDDs Size, No of HDDs, etc.). How can I do this, or where do I start?
0
votes
0answers
168 views

GeForce GTX 660 as passthough device with KVM : error no iommu_group for device qemu-system-x86_64

I'm tryng to use my GeForce GTX 660 as passthough device with KVM. I'm reading this guide : http://www.pugetsystems.com/labs/articles/Multiheaded-NVIDIA-Gaming-using-Ubuntu-14-04-KVM-585/ I'm ...
1
vote
0answers
200 views

How to enable IOMMU on the debian sid Kernel

I'm trying to enable IOMMU on my debian sid and with this kernel version : root@ziomario-Z87-HD3:/home/ziomario# uname -r 3.14-2-amd64 the motherboard of my computer is : GIGABYTE Z87-HD3 this is ...
3
votes
1answer
13 views

Real-time executive approach, can be run in desktop Linux?

With the real-time executive approach, a small real-time kernel coexists with the Linux kernel. This real-time core uses a simple real-time executive that runs the non-real-time Linux kernel as its ...
1
vote
1answer
88 views

How to migrate from Proxmox to VMWare?

I am wondering how it is possible to migrate a full hardware VM in Proxmox (qemu) to a full hardware VM in VMWare (vmdk). I have been searching all over the place, and it seems almost impossible to ...
0
votes
0answers
19 views

Is it possible to install RHEV on el6 clustered computer

Is it possible to use Linux (el6) clustered computer can be used as a hypervisor for RHEV 3.3/Ovirt 3.3? Cause, we can not combine RAM/CPU from two or more hypervisores to be considered as a one ...
0
votes
0answers
40 views

Copy and Paste between two guests in RHEV and/or VMware ESXi, is possible?

I do have two different setup: setup is with RHEV 3.3 and setup with VMware ESXi Is it possible to copy and paste between the two assigned guests to user, one guest is of Windows 7 and another ...
2
votes
0answers
160 views

Network connectivity issue between different hosts from a network namespace in one host

I have created two Ubuntu 12.04 VMs using VMWare Player with NAT network configuration. I am able to ping them from each other. After that, I created a network namespace in one of them and add a ...
2
votes
1answer
101 views

Why EC2 instance spends all its time in “IRQ” and what to do about it?

I have an m1.small EC2 instance that is mostly just running Apache as a web server for several simple PHP web sites (that use RDS as a database). The server is constantly with a very high load average ...
0
votes
0answers
81 views

Centos 6.5 laptop with multiple KVM on roaming networks

I have Laptop with CentOS 6.5 with 16GB RAM and many KVMs are created for testing purpose. Situation is I have to move from site to site, and due to that physically connected network eth0 to Host ...
0
votes
1answer
2k views

CentOS 6.5 + KVM (Virtual Machine Manager) create shortcut - Laucher for Guest Machine

How can I create a Launcher on my desktop for guests machines inside of KVM on desktop of CentOS 6.5?
1
vote
0answers
82 views

Xeon Phi swap from host's tmpfs

I want to use swap on Xeon Phi (mic0) using RAM from the host On the host: # free -m total used free shared buffers cached Mem: 129022 60312 ...
0
votes
1answer
85 views

Containers for sandboxing

I'm trying to find a container stack for sandboxing and and would like to know which stacks do that particular job well. By sandboxing I mean running applications so that security flaws are confined ...
1
vote
1answer
344 views

Networking between two Virtual machines on different hosts

I have openSuse installed as a virtual machine(Oracle Virtual Box) on DeskTop(win 7), and another openSuse installed on as a virtual machine(Oracle Virtual Box) on my Laptop(win 8.1). Please see the ...
1
vote
1answer
198 views

CPU Placement in KVM

I have a configuration of KVM guests where the cpu placement is configured as follows: <vcpu placement='static'>1</vcpu> Now since I don't have a cpuset specified I was reading libvirt ...
1
vote
1answer
97 views

Virtual always connected network interface with static IP?

How do I create a virtual, always connected network interface with a static IP on Linux? It must work when all my physical interfaces are disconnected. Looking for general information regarding this, ...
7
votes
1answer
3k views

Linux LXC vs FreeBSD jail

Are there any notable differences between LXC (Linux containers) and FreeBSD's jails in terms of security, stability & performance? On first look, both approaches look very similar.
1
vote
1answer
589 views

init: /etc/init.conf: Unable to load configuration: No such file or directory

Running Linux 6 on VMWare, I noticed this in the system message log: init: /etc/init.conf: Unable to load configuration: No such file or directory What's the cause of this error? How do I ...
3
votes
2answers
56 views

LiveCD “Remembers” Earlier Partitioning

Whenever I use VirtualBox to install a Linux distro, I usually install the LiveISO onto the hard drive instead of just using it as a live CD. However, sometimes the ISO doesn't install fully (usually ...
2
votes
0answers
187 views

Vagrant-lxc container not starting

Firstly I'd like to say that I'm new to LXC and I may have some problems getting the right idea of how the things should work. The thing is I'm trying to start a previously download vagrant-lxc box ...
0
votes
1answer
123 views

Problems setting up own Cloud Lab

I'm trying to set up an own Cloud Lab on a self-built server. Server details: Board: Gigabyte Z77MX-D3H TH CPU: Xeon E3-1245 v2 16GB Crucial Ballistix CL8 1600Mhz NETWORK: ALFA AWUS036H additional ...
-1
votes
2answers
47 views

What should I basically expect from access to an OpenVZ based VPS? [closed]

I'm going to buy access to an OpenVZ based VPS for the first time. I want to run common software, like apache, irc server, znc, a mail server etc. I'd like to get an idea of how the system will be ...
4
votes
3answers
5k views

“echo 3 > /proc/sys/vm/drop_caches” - Permission denied as root

I am currently having some issues with the cache. It is a little too much right now so I wanted to clear it. I googled and found this little command: sync && echo 3 > ...
1
vote
1answer
51 views

What software allows the change of runtime-environment, while keeping the same kernel running?

I know that with a GNU/Linux distribution you can switch between different distributions at runtime when they use the same kernel or the kernel is compatible between 2 or more different distributions; ...
0
votes
1answer
21 views

where to put some script to run before VM Suspend?

I have run one shell script before the vm suspend. How to do this? Where to put this shell script so that it will run before the VM suspend .
1
vote
1answer
128 views

How to execute some shell script before VM suspend?

I have created one Centos VM. And I have created some IP aliases. Once I suspend and resume the VM my IP aliases are all going down. So I just want to capture the aliases address before suspend and ...
0
votes
0answers
32 views

Virtual Machine - Using bootable Windows drive as a client

I am trying to work out a solution that allows me to use a Windows client VM as a gaming environment that I can package as a resalable solution (I own a computer store). So far, it has been extremely ...
4
votes
1answer
957 views

One host, two virtual machines that cannot ping each other. How to solve

We have Virtual Machines operating within the KVM environment. We setup one as a dev server running Apache etc., and the other as a Windows development environment. The two environments are setup ...
1
vote
1answer
1k views

Qemu Arm how to passthrough a PCI Card

I'm trying to access a PCI wifi adapter on a Qemu, simulating vexpress-a9 board. I'm following is this tutorial which shares a passthrough PCI card of the host machine to a guest machine running on ...
1
vote
2answers
2k views

How to check which hypervisor is used from my VM? [duplicate]

So I'm running a VM somewhere and want to know what hypervisor the host is running. Any way to check whether it's running KVM or in a container? The vm is running Ubuntu
31
votes
8answers
4k views

Easy way to determine virtualization technology

I have command line access to a Linux machine which may or may not be virtualized. I want to determine what kind of virtualization technology it runs on, if any (VMWare, VirtualBox, KVM, OpenVZ, Xen, ...
1
vote
3answers
74 views

Virtualizing a Low End Virtual Server

I have started to teach the lesser fortunate children in my area about technology and computers in general. Some of them show some real promise and I'm planning to introduce them to Linux and Open ...
4
votes
2answers
85 views

How to set up interchangeable VM guest/hosts

I'm looking for a way to set up a computer so that the disk is partitioned for multi-booting to two operating systems: Linux and Windows. Whichever one is booted, I want the other to be accessible as ...
1
vote
2answers
981 views

Linux-distro with built-in Xen?

Are there any Linux-distros with Xen "built-in" and ready to act as host for virtual-computer out-of-the-box? Alternatively, distros where you can easily select "Xen-host" as an install option? I'm ...
5
votes
1answer
198 views

Running one OS per core

I'm interested in using a COTS board like the Wandboard for a project. On one hand I'd like to use something like Ubuntu for user interaction, sounds, TCP/IP stuff, etc. But I also need an RTOS like ...
3
votes
2answers
461 views

How to add a ms-dos partition table to a loop device?

I recently made a dd from a disk partition. I want to use it as a disk in a virtual machine. I can't because the disk has no partition table. Can I had a partition table to a loop device? how? ...
1
vote
1answer
440 views

vmstat on virtual machine and large values

Hi I'm using vmstat to track machine performance during some tests (jmeter). This is virtual machine running on a big machine where lots of other virtual machines are installed (about 20 virtual ...
1
vote
0answers
69 views

list of vitualization technology that run on linux [closed]

We decide to select a solution for virtualization. Is there any benchmark for comparing them by eachother? I have list of vitualization technology that run on Linux
4
votes
2answers
1k views

Openstack for home cloud hosting

I am experimenting with a couple of technologies that I soon may have to use at work. So for now, I was thinking about duplicating the environment which I may have to create for my office at home so ...
1
vote
0answers
266 views

Configure vmware-tools without an initrd image?

Is it possible to run vmware-tools without an initrd? I don't know why I should use an initrd and it makes my kernel compilation more complicated. I can boot into my kernel without initrd but when I ...
1
vote
1answer
2k views

Bridging ethernet interface

I have a server with 4 public IP's. I have it with this configuration and I want to bridge the interface eth0 for using it with KVM: So, I have 3 IP's (A.B.C.144, A.B.C.145, A.B.C.146) and another ...
2
votes
1answer
456 views

Running a query without the OS cache

I want to emulate a client site who doesn't have much caching because they have so much I/O all the time. I want to run a SQL query on my machine (on my VM to be precise) with the same limitations ...
4
votes
2answers
776 views

VM benchmark tools?

I would like to benchmark of few XEN-constallations: PV DomU HVM DomU with PV network and disk drivers HVM DomU with emulated IDE and PV network The base will be the same VM with the same ...
10
votes
4answers
3k views

Lightweight isolated linux environment

I want an isolated (guest) Linux environment on my computer that I can mess up without worrying about the host. E.g. install a lot of stuff from source without package management, pollute environment ...
3
votes
3answers
523 views

Problem with mount namespaces under Fedora

I've run into an odd problem regarding mount namespaces on Linux. I have two systems, both X86_64 running kernel 3.2.3-2 under Fedora 16. I am attempting to mount a tmpfs filesystem in a child ...
6
votes
2answers
3k views

Fast X for LXC guest on localhost?

How can I run X apps inside an LXC container efficiently? ssh -Y guest is too slow - there is no graphics acceleration with ssh -Y - everything has to travel over the virtual network with the ...
8
votes
1answer
642 views

Lightweight virtualization on Linux with user isolation

What Linux-on-Linux virtualization technologies provide user isolation? Specifically, I want root in the virtual machine not to have any privilege on the host. This was not the case for LXC, but was ...
5
votes
8answers
2k views

WebGUI for Virtualization?

Are there any virtualizations that can be accessed via a WebGUI too? I mean the administration part is enough on a terminal, but we need a virtualization/webgui solution for "customers". So that ...