Questions tagged [virtual-machine]

A virtual machine (VM) is a guest Operating System running in a completely isolated environment within a normal host operating system. Modern virtual machines are implemented with either software emulation or hardware virtualization or (in most cases) both together.

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1answer
915 views

Virtual machine hangs when trying to login after being idle for some time

I'm using Microsoft Virtual PC 2007 to run a Linux virtual machine, but after some time I can't login to it -- not from the instance on the localmachine or ssh in to the machine. Both give the same ...
3
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1answer
10k views

qemu no boot device found!

I am trying to set up a Linux x86_64 virtual machine on a 32bit Linux computer and I've been told aqemu's Wizard is a good option. I can follow the wizard steps, but when I try to start the virtual ...
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2answers
5k views

How can I install a 64bit Linux virtual machine on a 32bit Linux?

I've got a computer (Intel core i5) with 32bit Linux installed (ubuntu 11.04) and I would like to install a 64bit Linux virtual machine on it so I can test 64bit command-line applications on it.
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2answers
519 views

Choosing virtual machine software on Linux

There are many virtual machine software out there. Even some are included into mainline Linux. What differentiates them, and what criteria should one ponder while choosing one?
7
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1answer
12k views

What is Dom0 and how can one use it?

I have heard that Xen is now fully included into mainline Linux, and is usable via Dom0. What is Dom0, what is its purpose? How can one use it?
2
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1answer
2k views

How to create a “jailed” environment for an application under Linux?

Using Ubuntu 11.04 as a Desktop OS, I want to reach "bigger security" with a "jailing" processes: VirtualBox, Google Chrome, Firefox, VLC, PDF/djvu reader, MP3 player, wine, pidgin, transmission, ...
15
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7answers
14k views

Install virtual machine as non-root?

Is it possible to install any virtual machine software as non-root user and run it ? Which VM's are possible to be installed with out need of root access ? If it is not possible what would be the ...
3
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2answers
3k views

Virtualbox, mounting guest directory on host computer

Is there a way to mount a directory residing on my VB guest (linux) on my host (linux)? I know I can do it the other way around with the shared folders feature on Virtualbox, but is there a way to do ...
73
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2answers
94k views

How do I run 32-bit programs on a 64-bit Debian/Ubuntu?

I have a 64-bit (amd64 a.k.a. x86_64) Debian or Ubuntu installation. I need to run 32-bit (i386/i686) programs occasionally, or to compile programs for a 32-bit system. How can I do this with a ...
4
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2answers
240 views

Strange encoding in Slackware

I am a student and learning about operating systems, I was modifying a file using vi, when I accidentally did something (I don't remember what) that change the codification/encoding and now this is ...
6
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2answers
6k views

How to read one filesystem from a whole disk image file?

I ran these commands: VBoxManage clonehd d6b9f0a5-98df-48ca-83c8-91a0809ec349 --format RAW Debian.raw sudo dd if=~/.VirtualBox/HardDisks/Debian.raw of=/dev/sda5 When I try to mount the partition, I ...
7
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2answers
893 views

Xen/KVM/LXC for testing packages

On Debian Stable, I would like to be able to create a new instance of the OS, use apt-get to install some Unstable packages with dependencies, then cleanly delete the whole thing when I'm done. ...
86
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6answers
74k views

Does LVM impact performance?

I have to migrate a few servers to Linux, and one important aspect that I need to evaluate is that my new host system must have elastic storage capacity. Naturally, doing some basic research, I came ...
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2answers
3k views

Clustering Servers to run one vm

I am looking at clustering about five machines and I wanted to get some opinions about what is the best way to go about it. I'm wanting to run one VM over the five machines, firstly I want to ask, 1: ...
10
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3answers
3k views

What's causing VirtualBox OSE to hang my machine?

I'm using VirtualBox OSE and recently, when I run Ubuntu 10.10 on it, my machine tends to hang, forcing me to hard-reset it (not good). How do I start finding where the problem is? Here's the last ...
8
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3answers
6k views

What are the differences between various VM software?

I have only ever used VirtualBox and I would like to know, for example, what could I be missing from other offerings. I have heard of KVM and VMWare and I'm sure there's others. Short of reading ...
6
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3answers
246 views

Is it 'possible' to transfer a VM to the metal?

How can one take a VM and make it run on the machine?
3
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2answers
660 views

Attach terminal to X desktop running in VM

At home I'm setting up a CentOS 5.5 server that will be running a bunch of KVM VMs. Normally pressing the CTRL-SHIFT-Fn combination on the attached keyboard switches to terminals on the host machine. ...
5
votes
1answer
1k views

No core dump on Ubuntu on a Parallels shared folder

I have an application that I'm working on, and I'm having trouble getting a core dump when it segfaults. In fact, I'm having trouble getting real core dump files at all. A simple test case will ...
4
votes
1answer
2k views

Is PowerVM a full operating system? (And other clarifications.)

I have a few things that I was hoping someone with more experience could clarify in regards to using PowerVM (specifically to virtualise via LPARs AIX). So here is what I think I understand regarding ...
43
votes
12answers
72k views

Find out if the OS is running in a virtual environment [duplicate]

Is there any way to find out if the OS I'm running (actually installing) is running in a VMWare machine. I need to disable ntp settings if the automated install is done on a virtual machine but keep ...
5
votes
2answers
1k views

Mount windows Users directory as /home in linux virtual machine

I'm setting up a laptop for a friend and I'm going to put linux on it in a virtual machine and I want to make it as seamless as possible. I've mounted the \Users\Username directory in a VM before and ...
6
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2answers
4k views

Windows 7 Dual Boot + Virtualization under Ubuntu 10.04?

Question: I currently have a dual boot: Win 7 x64 Pro & Ubuntu 10.04.1 x64. Is there a way to boot Win 7 as a virtual machine under Ubuntu without reinstalling anything, in addition to ...
2
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3answers
401 views

Linux as virtualisation host and client performance under Core i7?

(to skip the details, jump to last paragraph) A few months ago I built what I thought was a beefed up box with an AMD Phenom II X4 955, 8 GB DDR3 1333 mHz RAM plus a nice motherboard (can't remember ...
4
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1answer
2k views

vcenter server on Linux?

I am working with VMware and preparing a vcenter server on a Windows server. I would like to know, how good is vcenter in linux - has anyone tried it? I would like to work with Ubuntu server, unless ...
8
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2answers
965 views

Good tutorial for setting up a KVM/Xen box and advice on which would be better

I've got a dual xeon, 2GB, 75GB hd server that I'd like to turn into my dedicated virtual environment. Currently I'm using VirtualBox locally to run a mock cluster for Cassandra and Nginx/Haproxy, ...
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1answer
269 views

What does a “OVM reboot” mean? [closed]

What does this term mean?
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4answers
13k views

Good distro for a VM?

I want a lightweight Linux VM that I can run with VirtualBox on Windows so I can test how to deploy PHP apps, Mono apps, etc. I don't need the UI and was thinking of going with the Ubuntu server ISO. ...
2
votes
1answer
3k views

Configuring the display properties on openSuse (Gnome) running as VirtualBox VM

I just created a VM using Suse Studio and I built just a simple openSUSE 11.3 VM based on the gnome template. I have not added any other software (except for Firefox and the Kernel modules, to be able ...
4
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2answers
234 views

What is the best way to do GUI development on a server machine? [closed]

This is a server at home. I have 3 computers running Linux and they are all servers running dedicated tasks like MySQL/Samba, Web Server and DNS/DHCP. Is it be a good idea to host a virtual machine ...