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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VM can't connect to host

I am running an Ubuntu virtual machine using VMware. My actual computer is running Linux Mint. From the host, when I try to ping the vm I get "Destination Net Unreachable", and when I try to ssh I get ...
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141 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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47 views

Resize Partition for dev/sda3 [on hold]

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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40 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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29 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 ...
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1answer
30 views

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

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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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 ...
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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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1answer
24 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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1answer
80 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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14 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
32 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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1answer
2k 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 ...
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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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1answer
35 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 ...
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94 views

Unable to log in to any user accounts on a fresh install of Arch linux

Has anyone run into the issue of not being able to log into their root account after a fresh install of Arch Linux? I have tried setting the root password twice with the passwd command within the ...
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3answers
10k views

VNC send Ctrl+Alt+F1-F6 to server

I've been trying to figure this out now for a while, I'm connecting to virtual machines through VNC, and by default you get a graphical or ncurses interface, and CTRL+ALT+F3 takes you to a console ...
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1answer
18 views

How do I configure VirtualBox snapshots running server processes to restore correctly?

I'm running VirtualBox 5.0.20 on an OS X host. There's a variety of guest systems, including Ubuntu, CentOS, Windows and OS X. For each of these systems, I created a live snapshot (i.e. while the VM ...
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2answers
758 views

Nested virtualization: run RHEVH inside KVM

I have laptop with 16GB RAM, trying to install Red Hat Enterprise Virtualization Hypervisor 3.3 on Virtual Machine Manager (KVM) based guest, but it gives error "Virtualization Hardware not found". ...
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32 views

Long term solution to running 3D applications in a virtual machine or container

I have a complex script written a few years ago and, although it currently works, almost every time I upgrade my machine something gets broken, and maintaining it really hinders my work. It acts as a ...
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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
34 views

How to install OS in virt-manager in kali linux v2.0

I have installed Kali Linux in Laptop. Now I have installed virt-manager in Kali. But while installing "fedora 22" in virtual machine it crashes. Below are some command output: service libvirtd ...
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1answer
27 views

How to SFTP into a KVM VM on remote RHEL 7.2 server?

We have a RHEL 7.2 server which runs a virtual RHEL 7.2 machine on KVM. The only way to connect to this VM is to SSH to the server and then SSH again to the VM, using a user on server. How can I ...
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0answers
19 views

Install IOTOP/IOSTAT via ZYPPER (or anything else) on a SUSE (SLES) 12 Virual Machine (HyperV)

I have a virtual machine hosted on HyperV. It is a SUSE Enterprise 12 OS residing in a rack somewhere in the dark side of our office. This machine is under-performing during a certain load that takes ...
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1answer
16 views

After installing Ubuntu, partitions do not match mounted directories

I installed an Ubuntu server in a virtual machine. What I really don't understand is the differences between parted and the mounted file system. I allocated a 100GB disk in vmware and it seems to be ...
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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 ...
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4answers
14k views

Booting the already installed Windows from the VirtualBox installed in Ubuntu

I want to boot the Windows which is installed in laptop's internal harddisk(/dev/sda1) from the VirtualBox installed in my Ubuntu. Can somebody tell me how to do this in VirtualBox.
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61 views

Fedora 23 Server 64-bit install fails to complete on virtual machine in Windows 10

While attempting to install Fedora SERVER from an iso: Fedora-Server-netinst-x86_64-23.iso the installation stalls completely on Creating ext4 on /dev/sda1. I am using VMware Workstation 12 Player ...
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1answer
22 views

Can’t build and start docker container with mariadb

Host OS: Ubuntu 16.04 x86_64 Docker OS: Alpine Linux Edge Docker version: 1.11.0, build 4dc5990 MariaDB version: 10.1.13 I try to install MariaDB via Dockerfile and start it on entrypoint ...
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1answer
20 views

Where to find information about tests from Phoronix test suite?

Phoronix Test Suite is a linux benchmarking tool made of tests and suites of tests. To print all available test phoronix-test-suite list-available-tests To print all available suites ...
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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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0answers
15 views

Qemu/KVM, windows guest password prompt

Ubuntu 16.04 Qemu/KVM Windows 8.1 guest SSH from remote host into hypervisor, run virt-manager. Get prompted for creds: user1@hypervisor, authenticate successfully. Open guest, get prompted for ...
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1answer
26 views

Unix Domain Socket with VM

Is it a true statement that, shared memory does not work between a host OS and guest OS, but a Unix Domain Socket (specifically udp) can communicate between the two? An in depth explanation would be ...
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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 ...
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votes
2answers
6k views

kvm virtual manager connection failed

I installed kvm package in the centos7 i am getting this problem how to solve this. full error is here Unable to connect to libvirt. no connection driver available for qemu:///system Libvirt URI ...
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1answer
2k views

virt-install complains “error: no such option: --network-bridge:br0”

I was following the directions here to set up a VM in CentOS 6.4 i386/686. But I'm getting this error: $ sudo virt-install --network-bridge:br0 --name vm1 --ram=1024 --vcpus=1 --disk ...
2
votes
2answers
5k views

Getting config error for yum in CentOS

I'm very new to linux, and I am using CentOS in a VM for program testing. Everything seems to be fine, except for every few minutes I get this error: Error Type: <class 'yum.Errors.ConfigError'> ...
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1answer
830 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, ...
1
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1answer
30 views

Execute command inside guest vm Libvirt

Is it possible to execute a command for eg:iostat inside a guest VM using libvirt or virsh .I want to find out IOPS for a guest vm but with libvirt java api I am not able to get the IOPS of a vm ...
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0answers
32 views

Performance issues running Linux Mint on qemu-kvm - maybe run in textmode and use remote graphics for administration?

we are running virtual servers on kvm-qemu, using debian wheezy as a host system. Unfortunately one server is based on Linux Mint 17.3. One big issue is the performance of Linux Mint based on kvm. ...
7
votes
1answer
5k views

docker - how to run x desktop in a container?

I'm trying to set up my Linux machine to run multiple guest OSes, one of those being a Windows VM, and another a Linux container. The goal here is to prevent me from messing up the host system, while ...
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0answers
20 views

VirtualBox guest (Windows 7) resets host (Slackware 13.1)

As pointed in the title I'm in a situation where a VirtualBox guest (Windows 7) resets host (Slackware 13.1). This happens when the guest (Windows) in booting up. The same happens with two virtual ...
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1answer
37 views

Displaying disks without partitions in openSUSE Leap 4.21

I am trying to allocate a Linux partition to a disk using an openSUSE VM (in VMPlayer). I have tried running sfdisk -l to find the disk, but when I do so I can only see drives with an existing Linux ...
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0answers
35 views

Mount storage from host in bhyve VM

Is it possible to mount storage space from the host environment inside a bhyve virtual machine? I could use a network share, but I figure there would be less overhead mounting the data directly. I'm ...
0
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1answer
21 views

Can't boot TAILS virtual nachine

I've downloaded TAILS and when I boot everything goes normally until it fully boots up, at which point it shows the desktop for a second and then says "Uh Oh! An error has occured" or something ...
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1answer
37 views

How to fix connection loss in VM?

My virtual machine loses the internet connection sometimes on linux and I need to stay connected constantly. So I wrote the following script: #!/bin/bash wget -q --tries=10 --timeout=20 --spider ...
0
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1answer
153 views

Booting a raw disk image in QEMU

I have a disk image file from here; that page says I can boot this image with QEMU and the following command: $ qemu-system-x86_64 -m 4096 -ctrl-grab -no-reboot x86-64.img That gives a message: ...
0
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1answer
162 views

openSUSE Leap 42.1 won't boot install as dual boot (works fine in VM)

I have a Leap 42.1 ISO which I have imaged to a USB drive using USBImage on Windows 10. When I tried to boot from USB the first time I got the following message: Trust openSUSE Certificate Do you ...