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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Virtual Machine failover with KVM [on hold]

I'm trying failover of VM's in KVM Linux as a learning program. Scenario: 2 HV Bare metal (2 physical servers) having CentOS with KVM. On both the HV there are multiple web-server with guest ...
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3answers
3k views

Is there a convenient small Unix virtual machine I can install as an Android app?

Ubuntu for Android seems to be missing in action. I'm travelling tomorrow and I need to take a basic Linux machine with me. I'd rather just take my tablet than a laptop. So is there a reasonable ...
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1answer
17 views

Moving VirtualBox disks to cloud services

Currently, the official way of deploying a custom distribution or different operating system on Linode is installing it locally in a virtual machine and copying the resulting disk verbatim to a Linode ...
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1answer
28 views

How do I compile my Gentoo kernel for AMD IOMMU?

I have an AMD A4-5300 CPU with a motherboard that supports IOMMU and I am trying to enable IOMMU on my Gentoo Hardened 4.3.3-r4 kernel with the intention of using a graphics card on a KVM VM. ...
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16 views

Install CentOS 6.2 GUI with XenServer 6.5

This is my first time to use XenServer 6.5. I want to add a CentOS 6.2 Virtual Machine into my XenServer. I put the CentOS 6.2 iso and added > vnc in boot parameter. Below are the screenshot: After ...
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1answer
555 views

Getting an already installed Android x86 partition to run on KVM

(Originally posted on SuperUser here, but posted here due to lack of responses.) I have Android installed on sda3, and it boots fine when loaded from Grub with the following commands: set root='(hd0,...
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1answer
291 views

fstab doesn't mount after boot of a virtual machine

I created virtual machine out of WordPress turnkey appliance (I believe it's based on Ubuntu) inside Virtual Box. I am able to mount a folder on turnkey from the host (Windows7) manually. So I added ...
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1answer
45 views

Can't Compile Hyperion1.2 with g++ Ming Compiler

Hey all I'm trying to compile Hyperion 1.2 and am getting errors. Here is the command I am using: x86_64-w64-mingw32-g++ Hyperion-1.2/Src/Crypter/hyperion.cpp -o Hyperion.exe And here is a ...
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1answer
2k 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 ...
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2answers
17 views

Proper way distribute several scientific experiments across multiple servers?

In case I have 8 powerful machines, what is the proper way to distribute and balance the load from user applications and scientific experiments? Is virtualization right way to go, or is there any ...
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0answers
24 views

VMware Mac OS X 10.11 on Ubuntu Shared Connection Problem

I've just installed Mac OS X El Capitan 10.11 on my Ubuntu host pc and I cannot connect to the Internet, when I go to settings in Mac OS it just displays no ethernet connection is found. How can I ...
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17 views

FreeBSD display resolution under Veertu

I'm trying to set up FreeBSD 10.3 under Veertu. When starting X, the largest resolution I can get is 1280x720 (well, I can select 1280x768, but then I have to scroll). My actual screen is much bigger ...
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10 views

Proxmox hook for VMs

We have Proxmox installation. We want to execute a command after new VM was added. It is required for QEMU port redirection since setting redir option is not avaialble on GUI: qm set 102 -args "--...
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1answer
373 views

vmxnet3 multiqueue support in vmware workstation

I'm working on an application based on RSS multiqueue(receive side scaling), and testing it on vmware workstation, but found that vmxnet3 nic have problem with RSS. My linux virtual machine has 4 ...
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2answers
21 views

upload files from remote VM without graphic interface to google drive

I would like to upload a zipped folder to my google drive. The file is large and takes a long time to download to my local machine and even longer to upload it to drive. I was hoping to save some ...
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0answers
25 views

Access to disk partitions from QEMU

I have two OSes installed on my hard drive - Windows and Linux. These are setup in a dual-boot configuration. The hard drive uses GPT and UEFI. I'm looking for a way to grant QEMU (in Linux) access ...
2
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1answer
71 views

Bridged networking problem with Xen 4.6 and Ubuntu 16.04

I'm trying to setup a Xen virtualization on Ubuntu 16.04, and Xen 4.6. My plan is to have 1 private network, as well as virtual servers with public IP addresses which should be accessible externally (...
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1answer
2k 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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1answer
32 views

can't find running process which I started via SSH yesterday

Yesterday I connected to my Developer VM Debian Linux via SSH. I started "Mamute" which is a open source stackoverflow clone etc. As I restarted my machine today I reconnected as root and wanted to ...
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2answers
1k views

Linux guest VM on mac host - Keyboard

I use a Mac as a development box, but am slowly transitioning to Linux. So I am spending the majority of my time in the Linux guest VM while working. But I still spend a fair amount of time in Mac ...
3
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0answers
42 views

Getting a Windows 7 installation to run virtualized under Ubuntu?

I've currently installed Windows 7 and Ubuntu via dualboot. To avoid switching the OS by rebooting, i want to be able to start my Windows 7 via a virtual machine. It is important to be able to boot ...
0
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1answer
18 views

How to use a ks.cfg file to create a virtual machine.

I'm studying for the RHCSA exam and both practice exams i'm using have asked me to do this. The question is "Use the ks.cfg file provided to create a virtual machine with hostname blah blah and with ...
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1answer
98 views

Too many rcuos and rcuob processes in my VM

I am running CentOS 7.2 (3.10.0-327.18.2.el7.x86_64) as VMware guest with 2 cpu and 6 GB RAM on my Lenevo W540 iCore 7 having 32 GB RAM. I see 128 processes each for rcuos and rcuob in my VM. This ...
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1answer
231 views

Creating new SLES 12 VM on XenServer 6.5 fails

When I try to create a new SLES 12 VM on a XenServer 6.5 host it fails with this error message: "Failed","Starting VM 'AAEB-PUBLIC218LY' Internal error: xenopsd internal error: VM = 4d956449-...
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33 views

Use of virtio on QEMU without KVM

I want to write a simple driver for use inside a QEMU virtual machine, which will be communicating with the host through a respective backend special virtual device. The said driver and backend ...
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0answers
16 views

Create an inetrface to two virtual machines

I have two ubuntu virtual machines running on my computer. I want to design an application that provides me with a window via which I can communicate with both machines without having to use the ...
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1answer
933 views

Copy& Paste Fedora and Virtualbox CentOS7

I want copy text from Fedora 21 and paste to Virtual box with CentOS 7 how can I do that?? I change in Virtual box settings Shared Clipboard and Drag'n'Drop to bidirectional Thanks for help, ...
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3answers
3k views

Having issues installing Kali Linux in Virtualbox

Trying to install Kali Linux in VB and it freezes. I believe I have the correct version and a good ISO because it comes up and allows me to navigate to "install" Once I press enter, all that happens ...
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2answers
28 views

How to Install VirtualBox Client Extentions in Debian Virtual Machine

I have been struggling to install VirtualBox Client Extentions in a Debian Virtual Machine (Debian 7 & Debian 8), I found the solution yet again buried in a Post group. I did not figured out the ...
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2answers
31 views

VirtualBox Ubuntu on Windows XP host

I am attempting to make some installations on the Ubunto VirtualBox, running in a Windows XP host. The installation seems to work, I can successfully install programs using sudo apt-get install XXX ...
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1answer
2k views

Problem runing vmPlayer on fedora 21

After install the program and execute vmPlayer request the kernel headers to recompile it (I guess), after that vmP install the virtual network device, at this point show an error. and the vmware-...
0
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1answer
18 views

Pre-built developer ubuntu VM

I'm searching for a Ubuntu (or other Linux distribution) VM with pre-installed Maven, JDK, Code-Editor, etc. It's pretty annoying to install all these tools every time you set up a new development ...
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53 views

How to enable IOMMU on Gigabyte 990FXA-UD5 R5

I've enabled svm and iommu in the bios, but I get "not available" from dmesg: root@xen:~# dmesg |grep -i iommu [ 0.000000] Command line: placeholder root=UUID=0b6a99ef-b56b-4d71-9f63-4895d0276674 ...
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1answer
165 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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0answers
51 views

Resize Partition for dev/sda3 [closed]

I am trying to learn Linux. I have Linux-based server on which an Oracle Application running. This is a Virtual Machine and a single VHDx file. Now I want to extend /dev/sda3 as its current available ...
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59 views

an error occurred while mounting /

I have a trouble with virtual Ubuntu image launched on Oracle VM VirtualBox. After last reboot I can't manage to run it, because I'm getting on start message: EXT4-fs (sda1): Couldn't remount RDWR ...
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0answers
39 views

fedora 22 filesharing problem with virt-manager and Windows 7 guest

I'm running Fedora 22 (64 bit, 16gb memory, ext4 boot disk) with a cinnamon desktop and I would like to use Virtual Machine Manager to run Windows 7 as a guest. However, I'm having trouble ...
0
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1answer
46 views

'yum' is not recognized as an internal or external command, operable program or batch file [closed]

I installed CentOS 7 minimal on VirtualBox; when I type: yum install net-tools I get this error: 'yum' is not recognized as an internal or external command, operable program or batch file.
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2answers
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Can virtfs/9p be used as root file system?

Is it possible to use a folder shared from the host to the guest via virtfs/9p as the root file system inside the guest? Loosely related to my previous question: Can virtfs/9p be used to share the ...
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votes
2answers
2k views

how to pass Ctrl-C in qemu

I configured Qemu's grub the following way: GRUB_TERMINAL="serial console" GRUB_SERIAL_COMMAND="serial" GRUB_CMDLINE_LINUX="..console=ttyS0" and run the Qemu process with "-nographic" command line ...
2
votes
0answers
54 views

Virsh (libvirt-bin) is not able to communicate with Xen server

I have installed the latest version of Xen server 6.5. Now I want to connect to it with virsh (libvirt-bin). When I do this I get the error error:end of file while reading data: sh:nc:command not ...
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vote
1answer
27 views

Docker container on Red Hat Linux server 5.9

Can I install Docker on Red Hat server 5.9 so I can take an image container from an installed software and move it to another server? Or should it be enough to update the Kernel up to version 3 so ...
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vote
1answer
189 views

Arch linux ( kvm/qemu virtualization ) failed to open libiscsi.so.4

I have fallowed the steps from Arch Linux #KVM and #qemu 1) sudo pacman -S then installed libs libvirt libiscsi libaio qemu qemu-arch-extra qemu-block-iscsi qemu-block-rbd qemu-block-gluster ...
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0answers
21 views

UUID of LUKS changes when cloned

I am trying to install Centos 7 (under LUKS) on a virtual machine in Fedora 23 using virt-manager and after that to clone that image to multiple USB drives. The problem is that the virtual machine ...
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1answer
3k views

Comparison between: Linux host Windows guest vs Windows host Linux guest vs 2 dedicated machines w/ KVM switch [closed]

I have the conflict that I do most of my work, software developing and data analysis, in Linux but there are a few applications I have to use which do not run well using Wine (specifically MS Word and ...
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1answer
51 views

What is the network connection speed between two containers communicating via a virtual bridge running on the same host?

Does a virtual bridge (added to /etc/network/interfaces) limit the transfer speed of data from the memory of one lxc/docker container to another? For example does the memory throughput drop to that ...
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votes
1answer
3k 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 ...
0
votes
1answer
80 views

How to enable IOMMU on Gigabyte GA-970-Gaming SLI-CF

I've enabled svm and iommu in the bios, but I get "not available" from dmesg: # root@xen:~# dmesg |grep -i iommu [ 0.000000] Command line: placeholder root=UUID=4965005e-54e9-47b9-92ff-...