Questions about Virtualizing Ubuntu or virtualizing other operating systems within Ubuntu.

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Question with connecting to Docker container on virtualized Ubuntu server

As a web designer I have been using VirtualBox to set up temporary work servers for my projects. Lately I've been trying to reduce the number of virtual machines on my laptop(due to limitations of ...
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0answers
616 views

KVM-Guest only boots single user mode

We have a Vserver Host running on Ubuntu 12.04 with KVM/QEMU and so far guests been running fine with various OS's (Ubuntu 10.04, 12.10, Debian 6,7, CentOS 5,6). After the installation of Ubuntu ...
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0answers
109 views

How do I run a PXE server?

I'm going to run several virtual machines with KVM virtualization. In order to install guest systems over PXE protocol, I am going to run a PXE server on my host machine (I'm not doing it wrong, am ...
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599 views

Cannot install into target mounted with noexec or nodev while doing qemu-deboot strapping

I'm trying to install the armel version of Ubuntu with qemu-deboot-strap on my desktop X64 system,but I've found this error : $ mkdir precise $ sudo qemu-debootstrap --arch=armel precise ./precise/ ...
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259 views

How do I make wireless bridged networking work with linux guest in kvm/qemu?

I am running the ubuntu 13.10 cloud image on kvm/qemu. The guest networking works fine operating in NAT mode when on wireless. Wired bridged networking (eth0 + macvtap) works fine as well. When ...
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471 views

Mouse scroll wheel does not work for ubuntu 12.04 running under Hyper-V for Windows 8 Pro

I'm using Ubuntu 12.04 lts on a Hyper-V virtual machine (MS Windows 8 Pro) and I need some help with the mouse driver. The mouse responds fine in general: the cursor's moving, left/right click works ...
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272 views

How do I get the VT running X in my LXC container to my host?

I'm trying to run Lubuntu within an LXC container on my host already using a GUI. Is it possible to redirect the X output from the container to say; VT9 rather than VT7? If so where is the VT7 ...
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53 views

QEMU-KVM with VLANS and no bridges

Please be gentle, I'm both a novice Ubuntu user and novice networking guy. I'm trying to put together a virtual server to support a couple of telephony applications at my office. Both applications ...
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32 views

How do I mount a Shared Folder from a Vmware Workstation Host (Windows 7) inside Ubuntu

I have been trying to do this for days now and I am getting no where. I have downloaded the latest Vmware Tools. What steps/commands do I use? Please help Gary
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108 views

Virtualization limits for Ubuntu Server 14.04 LTS with KVM

Essentially I'm after something like this, but for Ubuntu Server 14.04 LTS. I'm trying to create some KVM guests with very large 1TB+ RAM (through OpenStack Nova). I can boot the 1TB VM fine, but I ...
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88 views

Host to Guest one way connection issue

I have guest run on my machine on qemu with configuration: /usr/local/kvm/bin/qemu-system-x86_64 -enable-kvm -cpu host -smp 8 -hda ${TEST_VIRT_ENV_IMAGE} -m 4096 -netdev user,id=user.0 -device ...
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36 views

How to invoke a X Session and a VM instead of login prompt

The system is Ubuntu 12.04 but the OEM requirement is to make it appear as if it is a Windows system to the end user. Other VMs and daemons will be active in the system but it is controlled from ...
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1k views

KVM GPU Passthrough

now i know this issue has been talked about before, but those topics are old now and slightly out dated. So I have recently been following a few different guides on getting this system working, ...
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581 views

MAAS, JUJU, VirtualBox 4.3 and virsh command

I've a problem with libvirt 1.2.2 and VirtualBox 4.3. After installing Ubuntu 14.04 server and setting MAAS and JUJU, I need to use virsh to see the list of my installed VM (as reported in the guide ...
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89 views

What backup solution allows for the easiest migration and restore of machines, even if they're restored from a VM or bare metal and vice versa?

I manage a lot of Ubuntu machines, many physical, many virtual. Backup as a general concept is pretty simple, but backup of entire systems tends to get murky. I'm familiar with virt-p2v, but that ...
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48 views

Virtual Machines

I have 3 VMs and I need to know weather they reside on one physical host or not, and if they not, I need to clone them to one physical host using OpenStack features. I am not sure how they were ...
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0answers
4k views

kvm error in syslog says cpu0 unhandled rdmsr

I have a server that hosts about 20 KVM guest machines. It's syslog is, at times, flooded with messages like these: 00:17:36 vhost-server kernel: [ 157.835078] kvm: 3138: cpu0 unhandled rdmsr: ...
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95 views

How do I run the Ubuntu Phone Nexus7 image in a VM?

Do I need to go through the device imaging steps with an ADT VM, a specific qemu configuration, something else, not possible? How do I run the Ubuntu Phone Nexus7 image in a VM? Any of the above ...
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1k views

How to Install Ubuntu Server amd64 12.0.4.1 in Windows 2008 Hyper-V?

I would like to install Ubuntu Server 12.0.4.1 LTS in Windows Server 2008 Hyper-V. However when I run the Ubuntu installation from the CDROM ISO, I get stopped by the error "Your installation CD-ROM ...
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413 views

Windows 8 guest, ubuntu 12.10 host - sound will only play through front headphone jack

I've had a search but couldn't find a solution for my issue. I'm running Ubuntu 12.10 with VMWare Player 5.0.1 build-894247. Unbuntu is recognising my sound card as a "Creative Labs CA0106 ...
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402 views

How to make NetworkManager NOT manage libvirtd's virtbr0 and vnet0 interfaces?

The libvirt-bin daemon libvirtd creates virtual bridge(s) and interface(s) for the virtual machines it controls. NetworkManager kills these connections. I know that it is possible to uninstall or ...
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26 views

Bridge external IP to the qemu standalone Virtual Machine

I'm having a very specific issue. To let You know what I'm up to, I will describe the whole infrastructure of my system. I've got a Ubuntu host machine on which I run up to 4 virtual Ubuntu ...
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38 views

Multi-headed Gaming VM Host on Ubuntu Server

I am trying to build a multi-headed gaming system based on an Ubuntu Server 15.04 host with either Windows or Ubuntu/Linux Mint guests. I have gotten the systems nearly working with Linux Mint/Ubuntu ...
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32 views

Manual for building a virtual machine with kvm

Using this manual I want to build a VM. However, the manual seems rather outdated: It talks about using Hardy on i386 architecture (I'm running Vivid on an x86_64). Also, ubuntu-vm-builder is no more ...
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33 views

graceful shutdown of libvirt virtual machines on host shutdown

I have a Windows 8 installation on a KVM virtual machine, runing on my Ubuntu 15.04 host. When I issue the shutdown option in virt-manager, or virsh shutdown windows, the virtual machine cleanly shuts ...
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18 views

How to hot add a new disk with virsh attach-disk?

I'm trying to add a new LVM disk to my guest machine (Ubuntu 14.04.1) by doing the following on the host: lvcreate -L 14G -n vm_vm005_data3 vg00 virsh attach-disk vm005 /dev/vg00/vm_vm005_data3 ...
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32 views

VM ware player Ubuntu post Installation problem- VT-x not in BIOS on lenovo T430

I am getting the following error: "This host supports Intel VT-x, but Intel VT-x is disabled" When I went into BIOS to change these, I did not find any option like "VT-x" Ubuntu version-14.04.01 VM- ...
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66 views

virt-sysprep problem

Virt-sysprep man page notes : You do not need to run virt-sysprep as root. In fact we'd generally recommend that you don't. The time you might want to run it as root is when you need root ...
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138 views

kvm bridge dropping packets

Periodically one or more of the guests lose network connectivity. We are getting packet loss only in vms. Setup: We're running 3 KVM guests, all Ubuntu 12.04 LTS using bridged networking. OS on ...
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26 views

what is the effect of making my kvm's HD cache none vs default?

I am playing with KVM migration, and I got an error about unsafe migration due to hdd cache settings. I found the fix, which is to set the cache to none and it works after I made the change. But ...
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92 views

Simulate Universal Bootloader (DAS U-BOOT) with Qemu

I was trying to simulate u-boot with qemu for the ARM based versatile_pb board. I was successfully able to CROSS_COMPILE my u-boot source code with the gcc-linaro-arm-none-eabi-toolchain and create ...
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116 views

How to configure promiscuous mode rejected in KVM bridge?

I am using Ubuntu 14.04 (3.13.0-45-generic #74-Ubuntu SMP) as Host OS. KVM version 2.0.0 I have disabled promiscuous mode in guest Virtual Interfaces along with corresponding host vnet & bridge ...
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137 views

Running vagrant inside VirtualBox

I'm running Xubuntu 14.04 in a VirtualBox VM on Windows 7. Inside the VM, I want to use Vagrant as part of my development environment. The Vagrant setup executes successfully, until it wants the VM ...
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22 views

how to use the Container technology on Ubuntu?

Is there a way to deploy a distribution other than Ubuntu, as content on Ubuntu? Say in my case i'm planning a Redhat as a content on my Ubuntu 14.04 . If yes. How to do it?
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126 views

Critical random slowdown issue using KVM/QEMU

I'm having a critical issue with KVM/QEMU which is severely impacting one of my projects and I don't know where to put my hands. I've set up a brand new physical server configured with a 2 x Intel ...
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0answers
299 views

How can I get my Ubuntu 10.04 Hyper-V VM to recognize the virtual networking hardware?

I am new to Linux and Ubuntu, being primarily a Windows developer for the past 20 years. However, we've been using Redmine hosted on an Ubuntu VM to manage our development tickets. The VM was hosted ...
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117 views

qemu: how to select from which hdd to boot?

I want to connect 2 hdds to my qemu virtual machine. One of them is actually a file connected via virtio, and I want it to be the bootable drive. The other is a partition that I want to pass through; ...
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181 views

How to install qemu-kvm from source

I previously installed kvm via apt-get. Then I install qemu from source via following steps: wget http://wiki.qemu.org/download/qemu-2.1.91.tar.bz2 cd qemu-2.1.91 ./configure make && make ...
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142 views

Automount USB disk (ntfs) and use files for libvirt/qemu/kvm?

When I plugin my NTFS USB disk it gets auto-mounted. That's fine. But when I want to use files for libvirt/kvm/qemu virtualizaztion they cannot be accessed. Sadly I cannot find the parameter or option ...
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54 views

Cannot restore a saved machine

I cannot restore a saved machine with both virt-manager and the virtsh restore command: laurent@aspire6930g:/var/lib/libvirt/qemu/save$ sudo virsh restore windows7.save erreur : Impossible de ...
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44 views

Error While installing Kubuntu 14.04 in Virtual machine

Running Kubuntu 14.04 in Virtual machine Gives me an Error :- Boot : could not found kernel image : vmlinuxz.efi how can solve these ?
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48 views

virtualization of Ubuntu 14.04 on macox using virtual box

I have 2 main questions related to the virtualization. First, after having installed ubuntu on VBox latest version on my macbook pro, the OS is working fine but display setting is stucked in 800x600. ...
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24 views

Need commands to fetch Guest VM OS version from Xen and KVM

I m looking for the commands that can be executed to fetch the OS Version of the VMs running on the below Hypervisors. Xen (Not the citrix Xen server, but the Xen Sever hosted on a ubuntu Machine) ...
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148 views

Nested virtualization on Windows

For the last few weeks I have been reading a lot about OpenStack, Cloud Computing, virtualization, VMware tools and I have decided to try it. I would like to install, configure it and try it to see ...
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0answers
54 views

Installing Ubuntu Server on a SONY VAIO with NO hardware-virtualization

Is there a version of UBUNTU server that can be installed on a laptop (SONY VAIO) with the hardware-virtualization disabled? It is not possible to enable hardware-virtualization in some VAIO laptops. ...
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23 views

Can we add ports to OVS AFTER the VM is created?

I wanted to write up a program where I can create VMs first using libvirt. Initially they would not be added to any network. Then I want them to be attached to an OVS bridge where I can specify the ...
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101 views

Virtualbox Guest Additions are not used

Today, it seemed in my Ubuntu 14.04 VM (Kubuntu 14.04 host), there was an update for the Guest Additions to 4.3.12, and I was requested to install them from the Devices menu. I did this, but even ...
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27 views

Sync Flash Drive OS with Virtual

I have installed ubuntu (Lubuntu 14.04 specifically, but I don't think that matters for this question) to a USB flash drive (full install, not live system) so I can have an ubuntu environment I can ...
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245 views

Convert a directory to VHD file?

I have a directory that contains thousands of files and folders, I need to copy it to a Ubuntu virtual machine in Hyper-V, so if I use copy or cloning to will take a lot of time, can I convert this ...
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27 views

KVM image size has changed?

We had a 180GB VM image. Inside the guest VM everything is OK and hdd size is 180G. but when we look the image size on the host it is 475MB. I am afraid that if we restart, the VM wouldn't work. I ...