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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Can not startx ubuntu virtual image vbox vm

Scenario, a ubuntu server in a vbox with minimal virtual machine mode. I ran: sudo aptitude install --without-recommends xserver-xorg-core sudo aptitude install jwm startx output: -bash: ...
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34 views

ssh over unix pipe or pty device [closed]

Ok, I don't even know how to put this into words. I have a /dev/myDevice which automatically connects to some ssh server when opened. How do I connect to it with ssh? Is this even sane? If it's insane ...
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16 views

where to compress=lzo, btrfs with virtual disk images, with their vm's internally using btrfs

I've been using compress=lzo on my btrfs volumes, because I read this fast compression method actually increases drive performance. (Haven't tested myself.) I'm starting to use ...
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1answer
38 views

Time is not synchronized in Linux VM

I am using one Linux VM through VNC viewer from my Windows machine. What I am seeing is that time between two is not synchronized, it seems that VM is somewhat 5 minutes delayed from Windows(windows ...
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1answer
24 views

Create new physical volume using lvm

I have Linux Mint 17.2 codename Rafaela running as a virtual machine with a disk size of 30GB. I used the default LVM installation. I would like now to create a physical volume /dev/drbd0 to use it in ...
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1answer
25 views

virsh and creating storage pools - What is sourcepath “- - - -”

I am running CentOS 7 and was following a chapter in a book dealing with virtualization and creating storage pools. I successfully ran the following command, but I'm not sure what setting - - - - as ...
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2answers
793 views

What do the processes inside a Docker container look like?

I've heard confusion come up several times recently around what a Docker container is, and more specifically what's going on inside, with respect to commands & processes that I invoke while inside ...
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1answer
19 views

Is it possible to run a Linux distro within a VM on Qubes OS?

In particular, I am considering running a minimal distro (maybe ttylinux) within Qubes. I understand that Qubes can run each OS component and application within a separate VM but how about an entire ...
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0answers
21 views

Is it possible to install Xen on a computer (processor supports virtualization) alongside Ubuntu and Windows?

The computer currently triple boots Ubuntu and a couple of Windows versions. Now I want to add Xen into the mix. Would it work if I simply made a new partition for Xen, or does it need to take over ...
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1answer
39 views

Check if Ubuntu is being installed in VirtualBox VM

I am trying to automate the installation of Ubuntu from a network repository. I am now successfully able to configure the ISO image and it does the installation automatically. My requirement: I ...
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1answer
15 views

What things should be kept in mind while assigning static IP addresses to Virtual Machines

I always face problems pinging the base machine whenever I assign statics IPs to VMs. I also don't understand what gateway IP should I give,to connect to the internet or just to be able ping the Base ...
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1answer
42 views

Virtual USB HID device

I'm developing an application that will communicate with attached USB HID device. The problem is that there is no real device yet (it is under development by another part of our team), so, I'd really ...
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12 views

Qemu overlay image size limit

I created a qemu ubuntu vm. Now I use overlay images as a quick way of creating vm's "on the fly". But what is the size limit for an overlay image? Is it the size of the "base" image? Or can it grow ...
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34 views

Using raw physical hard disk in virtual machine, with smart capability and true model number seen

Is it possible to add an entire physical hard disk to a VM, and inside the VM see the hard disk for what it truly is? In VMware Workstation 11.1, if I add a hard disk choosing SCSI, with "Use a ...
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0answers
58 views

OpenVZ fails Container creating (Unable to get appcache tarball name for ve-basic.conf-sample with ostemplate debian-7.0-x86-minimal)

I have OpenVZ installed on CentOS 7.1. After I execute vzctl create 101 --ostemplate debian-7.0-x86-minimal I get command /usr/sbin/vzpkg exited with error 8 Unable to get appcache tarball name ...
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1answer
17 views

Laptop doesn' t want to wake up

My laptop (Notebook HP Pavilion g7t-1100 CTO) have been working fine till today, I enabled Virtual Technology in BIOS and from that time laptop doesn't want to wake up after I slept it. When I disable ...
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24 views

Turn .vmwarevm into .iso

I was wondering if anyone knows how to take the .vmwarevm and the files inside it and turn it into an .iso. I searched on Google but haven't found anything. It would be amazing if the .iso can ...
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0answers
11 views

Gnome-boxes not able to see virtual machines after sleep

I am having a bit of trouble to solve this issue. I am using gnome-boxes to run my windows boxes for my school project purpose. When I boot the system, everything works just fine When I type : ...
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2answers
31 views

Send network traffic via a Windows VM on the same host to use corporate vpn?

At work we have a VPN solution that will only work on windows. I personally do not run Windows at home and run Linux (Ubuntu 14.04). I used Virtual Box to setup a Windows 7 virtual machine to run ...
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0answers
45 views

how do I mount an external hard drive connected via SATA Wire to CentOS 7

I have CentOS 7 installed as a guest OS inside VirtualBox running on a Windows 8.1 machine. There is a SATA Wire connecting the machine to an external hard drive that used to contain a dual boot ...
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1answer
36 views

enabling vnc after using virt-install

I've created a virtual machine using virt-install with graphics --none. I want to enable vnc. I've tried virsh -c qemu:///system qemu-monitor-command vm171-SC-1 --hmp change vnc :3 but it doesn't ...
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1answer
25 views

Disk mount on a linux VM , mounted elsewhere

Hi I am using a slightly unnecessary(maybe?) kind of a set up ... A debian build_VM The build_VM ran out of space so I formatted and mounted a disk on to the build_VM But before mounting the ...
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1answer
129 views

VirtualBox guest cannot connect to USB drive, why not?

I have VirtualBox installed in Windows 8.1 and I am using it to launch and use CentOS 7 within VirtualBox. When I connect a USB drive to the computer, and right click over the icon circled in the ...
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18 views

.xml OR .img file copy from server to client and boot OS on server using client's hardware

I'm using virtual manager in rhel6. made two virtual machines . one server and other client(both running rhel6 OS) I want to copy .xml file from server's /etc/libvirt/qemu to client's system to use ...
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1answer
43 views

Setup a classroom Linux system

I need to set up a 30-user Ubuntu classroom. All our PCs are currently Microsoft Windows based and run from Windows servers. In the school I need my students to have full access to Ubuntu OS, so that ...
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32 views

No sound coming from Linux-based virtual machines under Qemu on Linux Mint 16 host - why?

I have been using Qemu and virt-manager for quite some time (years) now and it's only recently that I noticed I don't get any sound output from any of my Linux-based virtual machines — it's always ...
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1answer
42 views

What are the differences between virtualbox-linux and installed-linux? [closed]

Is using virtualbox for running linux any different than installing linux on the machine except for performance ? Are there any drawbacks from using virtual box to run linux than trying the real thing ...
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0answers
42 views

Export virtualbox image files from a linux box

We have a Linux box that we used to have support for. but the company that supports the box went out of business. The server (I believe is Ubuntu) was backing up our physical servers and creates an ...
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1answer
42 views

Why does this bash fork bomb not work on my RHEL VM?

I'm running a RHEL 6.5 VM in a VMware ESXi environment and accessing it through the vSphere Web Client virtual console (in my browser). I wanted to crash this machine on purpose and executed :(){ ...
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24 views

How to configure Ubuntu 12.04 VM to use physical serial port on host

I am trying to configure a Ubuntu 12.04 VM to use a physical serial port on the host. When configuring the serial port in vSphere, I am presented with two options – uart0 and uart1. From what I can ...
2
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1answer
86 views

How to configure a workstation for multiple Linux and Windows users?

I work at a university and a part of my job entails usage of software for numerical simulation of fluid flow. My department decided to buy a new high- end workstation that should primarily serve as ...
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1answer
83 views

How to send/upload a file from Host OS to guest OS in KVM?(not folder sharing)

I have to make a configuration file available to guest OS running on top of KVM hyper-visor. I have already read about folder sharing options between host and guest in KVM with 'qemu' and 9P virtio ...
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2answers
468 views

Installing VBox Guest Additions when there is no X-server

I'm using Virtual Box on my windows 8.1 host machine. I have installed CentOS & Ubuntu in 'Graphical Mode' and had sufficient practice. But now I wanted to switch to 'Command Line Mode" ...
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1answer
33 views

Enable virtualization with gigabyte ud3 990fx

I'm trying to get the virtualization running : I have the following settings: Mainboard: gigabyte ud3 990fx CPU: fx-9590 Kernel: 3.11.0-12-generic Linux Mint 17 In the bios both svm as well as ...
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1answer
34 views

LinuxMint “File System” shows no space when many GB exist

I have a VM running LinuxMint 17.1. I just resized the virtual disk, then used a live CD to resize the system partitions. I now have 18GB+ free. However, when I look in Files, "File System" shows as ...
2
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1answer
110 views

GParted LiveCD fails to start

I have a VM setup in VirtualBox (LinuxMint 17.1). But I'm trying to boot to GParted so I can resize a partition. I'm using gparted-live-0.22.0-2-amd64.iso and it boots correctly. I've tried every ...
2
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0answers
50 views

Moving a whole server into docker instance (or LXC)

It seems to work, to move an existing install into a virtual machine. Is it possible to move a whole Debian server into a docker instance inside the same machine? I would like to get a docker that I ...
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0answers
18 views

extract information about vmware host from within the guest

I have virtual machine (guest) running inside VMware Hypervisor (host). The guest is running Debian and has vmware tools installed How can I extract as much information as possible about the host, ...
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1answer
143 views

How to mount VMware-tools cdrom inside a VM

I know this should be easy, but I'm having a hell of a time figuring out where the vmware tools cdrom is (for instance it's not /dev/cdrom) and so I can't figure out how to mount it. I'm on Kali ...
1
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1answer
72 views

USB not working : USB Ports Hijacked/Reserved Permanently by VirtualBox

This scary incident happened today morning. I started a virtual machine inside my Linux Mint host and shared my USB Wireless device with the machine. The virtual machine's image resided in an ...
1
vote
1answer
32 views

How do I keep the time on a server (virtual machine) updated over time?

I have a virtual machine running headless in my machine. When I start it for the first time, the result of date command is correct. But after about a day or 2, I SSH into it and the date command has ...
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0answers
39 views

VirtualBox wont do seamless mode

I had a wheezy debian virtual machine, and I updated to jessie. Now, the VM will not do seamless mode, or even full screen. I tried updating VirtualBox, installing Guest Additions, installing the PEUL ...
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1answer
34 views

Why does user mode linux spawn 4 processes?

If I start User Mode Linux with this command: ./kernel32-3.19.8 ubda=./Debian-Wheezy-x86-root_fs mem=128m On Debian GNU/Linux 8 (jessie) with one CPU core, why do I see 4 processes in top: 1608 ...
3
votes
2answers
410 views

Linux-KVM, QEMU, Virtualbox, VMWare [closed]

I'm new to Linux. I'm trying to build Chromium OS and run it on QEMU. Meanwhile I came across Linux KVM, Virtualbox and VMWare. So I have basically two questions about virtualization in Linux: What ...
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1answer
41 views

VM Machine rebooted, cant find how?

One of my VM machine was rebooted yesterday, but cant find how & who did it. In the log I can only find "receiving single 15, terminated" please help how to do further troubleshooting.
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1answer
58 views

How to start Virtual Box service on Linux

I performed a dist-upgrade and then and autoclean and autoremove. It disabled the Virtual Box service on Linux because the headers were out of date. The headers caught up, so I rebuilt the modules off ...
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1answer
35 views

virtualbox on os x lags when not active

I am running ubuntu server as guest inside virtualbox on os x 10.10.x host While the system works, it lags whenever the virtualbox window is not the active app. E.g. I log into ubuntu from terminal ...
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0answers
36 views

User Mode Linux - running CentOS - recommended FS & Kernel combination

I'm trying to run CentOS6 in "User Mode Linux" - i.e., virtualization without root privileges. It can be either 32 bits or 64 bits - whatever works right. The UML kernel is distributed seperately from ...
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0answers
78 views

Oracle VirtualBox Virtual machine automatically goes pause state

Virtual machine goes Pause state Automatically. And Error message shows in one box " An error has occurred during virtual machine execution! The error details are shown below. You may try to ...
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3answers
186 views

How to recognize which virtual environment is being used [duplicate]

Suppose I have logged in through sshto a given Linux machine, knowing nothing about it. How can I quickly check what virtual environment (VMWare, VirtualBox, LXC, etc., if any) is currently running ...