Linux Kernel Virtual Machine is a virtualization system (VM)
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How to improve graphical performance of Windows 8 on KVM?
I installed Windows 8 on KVM. But its graphical performance is less than desirable.
First I tried to use SPICE protocol to solve this problem, but it doesn't support Windows 8.
Next I tried to use ...
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34 views
How to ignore a USB device in udev
I want to pass a USB device (to be precise: a smart card reader) to a KVM virtual machine, and therefore have to prohibit that it is claimed by any driver on the host machine.
I tried to write a udev ...
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2answers
18 views
Boot OpenSuSE installation in QEmu-KVM using QEmu-KVM as the bootloader
I am trying to pass kernel parameters to a virtual OpenSuSE installation without typing them on a boot prompt, using the ability of KVM to load the kernel directly.
First, I mount the installation ...
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1answer
62 views
What VNC clients support qemu's audio extension?
I've read that
QEMU implements an extension for providing audio over a VNC connection
Unfortunately despite doing a lot of web searches and even installing some different VNC clients and ...
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2answers
1k views
Windows 7 amd64 guest in kvm does not have sound
my host system is gentoo amd64, guest system is Windows 7 amd64. the guest system can work, except it does not have sound. I start kvm with -soundhw ac97, QEMU_AUDIO_DRV='alsa', and after I get into ...
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39 views
tunneling pptp vpn and network setup for bridged kvm running win7 enterprise on linux host
I'm using a win7 provided image from work to run inside qemu-kvm (libvirt/virt-manager).
The host is running Debian Wheezy.
The win7 vm wants to join the company AD and has certain tools to check if ...
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2answers
75 views
oVirt requirements and other web based mgmt tools for kvm
I'm evaluating different virtualization management tools for KVM virtualization. I've a kvm ready server with 32GB ram. I'm looking for web based management tools where different people can ...
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1answer
16 views
VM program which stores directly on HDD
I'm looking for a VM program like VMware, LXC, or KVM, which stores the whole hard drive of the guest OS on the host HDD.
LXC for instance does this, it stores in ...
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108 views
Unable to connect to libvirt on Virtual Machine Manager on Ubuntu 12.10
I'm trying to install a Windows 8 VM using KVM and the Virtual Machine Manager GUI. Upon installing KVM and VMM, and starting VMM I get the error Unable to connect to libvirt.
Verify that:
- The ...
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1answer
230 views
Convert KVM virtual machine to LXC container
I have 2 virtual machines (with Debian, using KVM) with virtual hard drives:
/srv/kvm/ssh.img
/srv/kvm/www.img
Both have 3 partitions (/, /home, swap).
I want to convert them in a RootFS usable ...
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2answers
4k views
Change CD-ROM via virsh
I have a KVM virtual machine that is managed via libvirsh. Now I want to use a different ISO image inside the VM.
How do I change the DVD in the virtual drive using virsh?
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Use physical disk in kvm in addition to virtual one
I'm running kvm in RHEL 6.3 like this (guest VM is also RHEL 6.3):
/usr/libexec/qemu-kvm -drive file=rhel63.qcow2,if=virtio,index=0
It works fine.
But when I try to add real drive in addition to ...
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1answer
178 views
QEMU: How to find bottleneck in my virtual machine?
I am running an ubuntu virtual-machine on a 12.04 ubuntu server. Unfortunately the machine is extremly slow (just htop consumes 15%), even though having 8 cores etc.
Do you know a way to find the ...
2
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2answers
6k views
KVM image failed to start with virsh, permission denied
My host OS is Ubuntu Server 11.04 (natty)
After following the instructions detailed by Ubuntu's help, I created one KVM image using
sudo ubuntu-vm-builder kvm hardy --libvirt qemu:///system
The ...
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1answer
154 views
low usb speed file transfer using KVM host CentOs
i'm using qemu-kvm(1.1.1) to run a Windows 2008 R2 Virtual Machine. The host machine is running CentOs 6.3.
I'm exporting a USB 2.0 Hdd device to the VM using USB-redirection with spice channel.
So ...
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1answer
32 views
Permanently detach device
I'm setting up a vm box and I've enabled IOMMU.
Works great, except I get PTE Read access is not set errors flooding my dmesg.
In particular it is for one device, a USB 1.1 controller, that just ...
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1answer
255 views
Running the same Windows both in KVM and physical
I have kind of an advanced question for you, I would like to install Windows on my hard drive (which is GPT formatted) but I would like to be also able to run it in KVM. To clarify, the same Windows ...
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1answer
139 views
freebsd guest works from commandline `kvm`, hangs before boot inside virt-manager
I have a FreeBSD-7 guest (in a qcow2 disk image) which works just fine when I start it from the commandline with
# kvm -drive file=freebsd7.disk
But when started from the virt-manager GUI, it gets ...
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1answer
1k views
Virtualization: tips to speed up a Linux KVM guest
I set up an host Linux system with KVM and I installed another Linux as a guest (Debian 6). I nside the guest I launch a vncserver and I access it from the host using vncviewer. It works fine for my ...
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2answers
264 views
Host-only-like interface in KVM
I just migrated from Virtualbox to KVM, everything is very good. But I've a little bit confused in network adapter type.
In Virtualbox I have host-only adapter, which are virtual nic (no bridge), and ...
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2answers
83 views
Is the ubuntu a VM instance if I choose to install it alongside with windows via the wubi installer?
I recently installed a Ubuntu 12.10 64bit using wubi installer under Windows 8. Every time I start my machine, it will go to the Windows 8 bootloader first and then I can choose which operating system ...
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95 views
How do I prevent virt-manager from asking for the root password?
When starting virt-manager, it asks for the root password.
It looks like virt-manager causes the libvirtd daemon to run pkcheck with a couple of arguments, which then shows this authentication ...
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32 views
How use external screen for a KVM on a Proxmox hypervisor?
I would like to know if it is possible (and if yes how) to tell Proxmox to associate the screen connected to the hypervisor to one of the virtual system ?
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how to Improve performance of QEMU based vms in openstack over amazon [closed]
I have deployed openstack multinode installation in amazon using QEMU base virtualization.
But the vms performance is very slow. Is there any way to improve the performance of vms.
Please suggest.
...
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1answer
40 views
Is there a penalty for specify a different cpu than hosts in kvm/qemu [closed]
I am building a set of VMs for application testing, and would like to stress/performance test on different class of CPUs. What amount of overhead can I expect due to specifying a different CPU than ...
3
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1answer
410 views
libvirt/9p/kvm mount in fstab fails to mount at boot time
I am trying to mount a shared folder using qemu-kvm/9p and it fails to work if I add it to the fstab file. I get an error at boot that the device cannot be mounted, yet after start if I run "mount -a" ...
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2answers
3k views
Virtualized Screen Resolution
I have a 64 bit Ubuntu 9.10 workstation with two virtualized guest OSes using KVM/QEMU. Also both 64-bit. One is Fedora 12 the other is beta of Ubuntu 10.04.
The problem is that I would like to use ...
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0answers
146 views
KVM USB Passthrough and Zydas usb wireless adapter: device or resource busy
i'm tring to setup a kernel testing virtualmachine for a 80211 module.
i start my machine with this command:
kvm -m 512 -net nic -net vde -usb -usbdevice host:0ace:1215 ktesting.img
i set up a ...
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1answer
92 views
centos 6.2 VPS system encryption performance
My webapp database handles some user profile data (name, birthday, work and education history, email, facebook id, and also my facebook app secret that would provide any holder access to any facebook ...
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2answers
710 views
Prevent radeon driver from attaching to specific PCI devices?
I have two Radeon cards in this machine, a 6570 and a 6950:
lspci | grep VGA:
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Turks [Radeon HD 6570]
02:00.0 VGA compatible ...
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1answer
156 views
Cloning in KVM-Qemu
How does kvm clone the qcow2 images? I couldn't find any documentation on the internals of the cloning.
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1answer
175 views
How to set up virtual windows so it shares graphic card via IOMMU?
I'd like to continue using Linux as my desktop system. But from time to time I'd like to do some gaming. I know that I can use Wine and PlayOnLinux stuff, but it doesn't always work. I also know, that ...
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1answer
139 views
KVM guest displaying on an attatched monitor
I have a Debian Squeeze KVM hypervisor running a server guest VM and a Desktop guest OS VM. Is it possible for the Desktop guest to send it's display to monitor directly attatched to the computer?
An ...
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2answers
1k views
Is there any way to run 64bit Virtual Machine on 64bit processor without hardware virtualization (amd-v, vt-x)?
We have a 64bit virtual machine (CentOS) that we'd like to run on 64bit host-machine (may be running under any OS), but that host-machine doesn't support hardware virtualization, which, you know, ...
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75 views
How to integrate mouse,shard folder,and copy-and-paste in linux-kvm?
Just like Virtualbox, it can use the same mouse pointer in/out the virtual machine.
And it also has shared folder,copy-and-paste between them.
How can I enable these function on Virtual machine ...
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1answer
272 views
KVM machine does not start ssh, network is started, used to work
have been searching an pulling my hear out for the last 6 hours. I have a virtual machine that has been running fine for the last six months. I was happy ssh'ing into it and it was running a database ...
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12 views
the acl mode of files created by libvirtd
I use virsh save command to dump a domain , or use virDomainSave to dump the mem of a vm, the mode is 0600, and belongs to "root", how can i change the mode?
I want the file has mode "0644"
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0answers
160 views
Virtual Machine Got Frozen on start of installing FreeBSD, on CentOS6.3 KVM
Problem description:
In the installation section, after I entered the virt-install command with proper arguments(shown below) to build the virtual hardware configuration, and connected to the vm ...
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0answers
65 views
Guest slow after being idle for awhile
I've been playing with ESXi and Linux KVM to try to find out which one best suits our needs. With both of these solutions I've run into the same situation. After a guest has been idle for some time ...
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0answers
24 views
Windows 7 Enterprise under virtualization has no networking until login
I created a Windows 7 image to run under KVM based virtualiztion, but the networking for the image will not start until I login. I'm not very familiar with Windows, but it seems as though there is ...
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1answer
164 views
PCI-X card controlled by VM
I have a PCI-X card which I would like to assign to one of my VM guests.
I am using Ubuntu 10.10, with libvirt and kvm.
Is there any way, of completely bypassing the host system, and routing all ...
0
votes
1answer
40 views
error in qemu monitor wavcapture with virsh
I have VM running on qemu-kvm. I am managing it with libvirt and command line tool virsh.
I want to record the audio output of the VM. Here is what I am trying -
virsh qemu-monitor-command -hmp ...
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1answer
414 views
KVM module not found by virtual machine manager
On ubuntu when I launch the virtual machine manager I get a warning saying that KVM is not installed. I installed it from apt-get.
Ran modprobe and got:
$ modprobe -l | grep kvm
...
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1answer
353 views
KVM/QEMU SDL output to framebuffer
I want a KVM guest with SDL graphics on a host that does not run X. From what I've read, SDL supports output to the framebuffer, but I can't find much on the topic.
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1answer
304 views
How to enable Virtualization Technology in Samsung Chromebox
I need to enable Virtualization Technology (VT) in my Samsung Chromebox (Series 5) from Google IO 2012 because of Android x86 emulator from Intel. I am on Developer BIOS, but I have no clue, how to ...
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1answer
196 views
Reducing hard disk access of kvm
I have set up a kvm/qemu virtual machine on my home server (Ubuntu Server 12.04). My host system is installed on a small SSD but the image for the vm (virtual disk file) is saved on a classic HDD. ...
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0answers
178 views
How to set up linux watchdog daemon with Intel 6300esb
I've been searching for this on Google for sometime now and I have yet to find proper documentation on how to connect the kernel driver for my 6300esb watchdog timer to /dev/watchdog and ensure that ...
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2answers
2k views
Find IP of VM running KVM
How can I find the IP of the VM on KVM(using Nmap)? If not,are there any functions in Libvirt to do that?
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1answer
209 views
Is it possible to run KVM from a virtual installation of RHEL 6?
I am currently studying for the RHCSA exam that requires me to practice with KVM.
Is it possible to run for me to run KVM on an RHEL 6 virtual machine before I go to the trouble of partitioning my ...
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0answers
68 views
Mouse movement in KVM is much slower than VirtualBox, any work arounds?
I'm running KVM in latest Ubuntu, mouse seems pretty slow compared to host machine, the cursor looks "heavy" to me,
Anyone know what could possibly wrong ? I use a wireless mouse that connects ...
