QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that performs hardware virtualization.

learn more… | top users | synonyms

1
vote
1answer
23 views

libvirtd and filtered ports

I am new to virt-manager. After having configured a virtual network (new interface virbr0) with 2 VMs that should be able to communicate, I discovered that most ports are filtered. For example, the ...
1
vote
1answer
145 views

How to setup permission for virtfs in system libvirtd

I have troubles setting up the permissions for virtfs. I need to share a folder with several VMs in a way that user (same username, uid and gid on guests and host) can access it (have full ...
1
vote
1answer
96 views

How to reach only an application in QEMU emulation without X?

I run an OpenBSD guest on an OpenBSD host (Desktop) with QEMU. Because I want to run a webbrowser in a separated environment. I can reach the QEMU machine via ssh -X so I can see the webbrowser. But ...
1
vote
1answer
179 views

Using qemu to boot OpenSUSE (or any other OS) with custom kernel

I want to run OpenSUSE as guest with a custom kernel image which is on my host machine. I'm trying: $ qemu-system-x86_64 -hda opensuse.img -m 512 -kernel \ ...
1
vote
1answer
347 views

What are the right settings for Ubuntu Touch under qemu?

As you can see here, Canonical is releasing the images for Ubuntu touch, the problem is that apparently those are snapshots from a complete installation, there is no installer here and no vmlinuz + ...
1
vote
1answer
171 views

darkstat shown blocked traffic

I've installed Darkstat on a Qemu VM which is connected to a bridge interface on top of main server's interface ( eth0 ) In Darkstat report I can see many hosts in the same IP range of specified VMs ...
1
vote
1answer
902 views

Adding a populated existing disk device to a QEMU raw image

I have a raw QEMU image (vda.raw), and I would like to resize it and add an existing partition, using data I have in a file that contains a raw ext3 file system populated with data (vdb.raw). The two ...
1
vote
1answer
1k views

Boot device /dev/sda1 does not exist on Debian in QEmu

I have an image of Debian/LXDE assembled for ARM and I trying to run it in Qemu. I am using this command: sudo qemu-system-arm -M versatilepb \ -kernel ./vmlinuz-2.6.32-5-versatile \ ...
1
vote
0answers
14 views

Using a rados block device as block device in libvirt qemu

What is the difference between using a rados block device in libvirt qemu with disk type='network' and disk type='block'? The ceph guide tells me to do the following: <disk type='network' ...
1
vote
0answers
21 views

virt-manager error “format=dir: 'dir' invalid format” when creating qemu VM with ISO

This is virt-manager 1.0.1 on Fedora 20. The server has libvirt 1.2.13-1, qemu 2.2.1-2 on Arch Linux. Go to File -> New Virtual Machine. Select Use ISO Image to install from then browse for it. ...
1
vote
0answers
23 views

Passthrough PS/2 keyboard to guest OS

OS Windows run on VM (ubuntu, libvirt, qemu-kvm). And I have PS/2 keyboard on host hardware. Is there any way to pass it to guest OS without lost of performance (maybe emulate USB keyboard with keys ...
1
vote
1answer
47 views

Why port forwarding does not work in QEMU? [closed]

How to redirect port 5555 of Host OS to port 80 of Guest OS? Host OS: Debian Jessie 64-bit Guest OS: Windows XP SP3 32-bit I'm using the following commands: qemu-system-i386 -enable-kvm \ -name ...
1
vote
0answers
26 views

How do I emulate N900 hardware? (armel, OMAP3)

Is it possible to emulate the Nokia N900 hardware on my laptop for development purposes? I've had a look at some emulators, and Googled, but I can't find anything relevant. I know there's the Maemo ...
1
vote
0answers
76 views

Converting .vhd file to .raw - File is too small and does not boot

I have a Hyper-v .vhd file I am trying to convert to .raw for Proxmox. However every time I convert the size is less than half of the actual disk space used and when I import it doesn't boot. I ...
1
vote
0answers
136 views

(virt-manager:4796): Client failed to connect to the D-BUS daemon / Unable to connect to libvirt

I would like to boot and run Windows 8 with kvm or xen while I'm running Debian Wheezy. Actually I have installed Windows 8 on the external USB disk and Debian Wheezy on the hard disk sata. I'm tryng ...
1
vote
1answer
203 views

troubles mounting qcow2 image of QEMU

Have been trying to mount QEMU image with qcow2 type on Fedora 20 host, according to this article http://docs.openstack.org/image-guide/content/ch_modifying_images.html It appears that 'vgscan' ...
1
vote
1answer
1k views

virt-manager PCI passthrough gives error “No IOMMU Found” even w/ Intel IOMMU enabled

I am trying to set up PCI passthrough in virt-manager to grant my Debian Wheezy guest VM access to my laptop's Intel Centrino N wireless card. The Debian default kernel has Intel IOMMU enabled, and I ...
1
vote
1answer
958 views

How to migrate from Proxmox to VMWare?

I am wondering how it is possible to migrate a full hardware VM in Proxmox (qemu) to a full hardware VM in VMWare (vmdk). I have been searching all over the place, and it seems almost impossible to ...
1
vote
1answer
674 views

Qemu 2.0 Windows guest - mouse stops working (vnc) when using usb-passthrough

I have installed Qemu 2.0 on an Ubuntu Server 14.04 LTS computer. I use Qemu to run multiple virtual machines. One of them is using Windows 8.1 Pro (x64) and is used for back-ups. The guest runs fine ...
1
vote
0answers
19 views

Unitary testing: emulating hardware connection or disconnection

I'm writing a program using libudev. And I want to write some tests. But, one of the functionalities of the program has to do with an usb drive being connected or disconnected. I've read plenty of ...
1
vote
0answers
725 views

Qemu: No file system could mount root (unable to mount roofs)

In Linux, I've created the root file system (rootfs) by following commands: dd if=/dev/zero of=ramdisk.img bs=1M count=4 mkfs.ext2 ramdisk.img sudo mount -o loop ramdisk.img rootfs sudo cp init ...
1
vote
0answers
170 views

omap3530/3630 emulation on QEMU for overo and beagle machines

On QEMU's source code for beagle and overo I can see that the cpu emulated is the OMAP3430. I will like to know if it's a way to make QEMU emulate OMAP3530/3630 cpu's for those machines? On bealge : ...
1
vote
0answers
132 views

Creating a Virtual filesystem to boot linux

I am trying to boot the linux kernel (bzImage) in QEMU but have had issues. After asking on U&L I found out that my problem was that I was booting the kernel without a filesystem to boot from. So ...
1
vote
0answers
506 views

qemu-kvm savevm very slow

I have up to date gentoo system with kvm images located on 500 gb partition with 200 gb of free space and defragmented, running machine with Windows XP and 2gb ram, I have problem with making snapshot ...
1
vote
0answers
363 views

Cannot install Debian on QEmu-arm

I'm trying to run Debian 6 network install with this command: sudo qemu-system-arm -M versatilepb -kernel ./vmlinuz-2.6.32-5-versatile -initrd ./initrd.gz -hda ./debianlxde.img -m 256 -append ...
1
vote
1answer
933 views

how to use qemu to run build root linux images?

I have compiled an embedded linux with build root for i386. I didn't edited much, just defaults. Now I want to run it under qemu. But the only thing I see is this: I'm running qemu with these ...
0
votes
2answers
4k views

Installing qemu-img on ubuntu 11.04

I am developing a linux kernel and I am trying to to debug it in QEMU. I want to be able to run it in QEMU but it stops because I do not have a virtual hard drive to boot it(using the -hda command). I ...
0
votes
1answer
222 views

qemu can't run linux kernel

I saw this question and I did pretty much the same but I enabled initrd in configuration to use temporary root file system and no other modification but I still get this error on: qemu -kernel ...
0
votes
1answer
1k views

QEMU package not available for RHEL 64 bit

I am installing QEMU in RHEL. In 32 bit OS (i686 architecture), if I run the command, yum install qemu, the installation of QEMU takes place. However, in 64 bit architecture (x86_64), if I run the ...
0
votes
2answers
2k views

shared LVM storage between KVM virtuals

I'm messing around with KVM and different storage options for sharing between virtual machines. I have an LVM volume group defined as a storage pool for libvirt. I've defined a volume and attached it ...
0
votes
1answer
36 views

How to start qemu virtual machines at boot time?

What are the best practices to start qemu hosts automatically at boot time under Debian Wheezy? I do not use any abstraction layer like libvirt and start my virtual machines manually with for example: ...
0
votes
1answer
97 views

Why is qemu-kvm needed in Debian Wheezy when running qemu with “-enable-kvm” option?

I have a HP Compaq 8200 PC with Intel i5 CPU. I have enabled VT-x in BIOS: ..and CPU supports VT-x as it has vmx flag present in /proc/cpuinfo. I have loaded the kvm LKM: root@VM-host:~# modprobe ...
0
votes
1answer
74 views

No network interface in QEMU

My network interfaces never shows up in my guest computer. I'm compiling a linux kernel (3.3 I think) from scratch with default settings + Symbol: NE2K_PCI [=y] Type : tristate Prompt: PCI NE2000 ...
0
votes
1answer
45 views

TightVNC shows the window cropped

I am running debian live cd in qemu (kvm), and when I connect to VNC via vncviewer localhost:5900 the window is cropped to some static width and height combination. Making window fullscreen or ...
0
votes
1answer
671 views

Solaris 10 installation on KVM constantly reboot

Successfully installed Solaris 10 sparc on KVM. However when I restarted the VM it doesn't go to login screen but just constantly reboots. I've read different documents link1 link2 link3 but none of ...
0
votes
1answer
369 views

What is qemu-img consistency check?

I would be glad if someone could explain the meaning of qemu-img check <filename> command. Man pages provide very poor information about it: check [-f fmt] [-r [leaks | all]] filename ...
0
votes
1answer
514 views

kvm usb modem passthrough

I'm trying to set up a USB modem passthrough in kvm virt-manager. The host is Fedora 20. The guest is Centos 6 $ ifconfig wlp0s29u1u6: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether ...
0
votes
1answer
1k views

qemu: how to access host via sftp

I started a guest vm with qemu-system-x86_64 -net user -net nic -redir tcp:10022::22 -m 500 -hda op.img From the guest, I'm able to ssh the host machine, but can't connect via sftp The command I ...
0
votes
0answers
122 views

Why Debian Jessie is turned off instead of rebooting after installing qemu-kvm?

I'm using a new stable Debian Jessie (minimal installation without DE and standard utilities). First of all, I set 'enabled' for Intel virtualisation in BIOS and installed qemu-kvm as usual: # ...
0
votes
0answers
13 views

live-build strange symbols during boot

So I'm booting up my Debian live-build through QEemu and gets this strange symbols. Anyone know what it is?
0
votes
1answer
78 views

Configure KVM/QEMU with TLS?

New to virtualization and kvm and I have a problem when i try to create a virtual machine with spice: virt-install --name Windows-7-x64 --ram 2048 --disk path=~/kvm/images/win7.img,size=50 --vcpus=1 ...
0
votes
0answers
40 views

qemu-nbd vs vdfuse for mounting vdi images

What's faster, qemu-nbd or vdfuse? Which support differencing images (snapshots)? I suspect fuse to be slow, but nbd seems to be some old stuff.
0
votes
0answers
60 views

Running Mac OS X under KVM/QEMU

Note to be removed in the future, so as to avoid confusion from answerers and mods edit: Forgot to add in the note, if anyone thinks this is the wrong stack-site to post this, please comment on why, ...
0
votes
1answer
90 views

Boot from virtual usb drive in qemu-kvm

I want to create multi-bootable USB with GRUB2. But I don't want to use physical USB stick to experiment with. How can I create virtual USB to play with it as it is real device using qemu? I want to ...
0
votes
0answers
20 views

Which program and when uses /etc/qemu-ifup script?

Under Debian Wheezy qemu-system package installs a shell-script named qemu-ifup: root@VM-host:~# dpkg -S /etc/qemu-ifup qemu-system: /etc/qemu-ifup root@VM-host:~# /etc/qemu-ifup has a following ...
0
votes
0answers
51 views

Using ks.cfg with virt-install?

I've been trying to get a virtual machine working with a cfg file on centos but unfortunately, I'm getting the error that ks.cfg file does not exist. Below is the command I ran to enable the VM. ...
0
votes
0answers
36 views

Looking for a new conf for HA Data Server and Virtual Machines with Glusterfs

I own three HP server for lots of users and email, web and a development machine. I want to make my virtual machines to be available all times, but have some issues. My configuration is as follows: ...
0
votes
0answers
164 views

How to enable Vesa driver in qemu

I am running Red Hat 7 into a VM using virt-manager (qemu) and it seems that it uses by default, Cirrus driver: 00:02.0 VGA compatible controller [0300]: Cirrus Logic GD 5446 [1013:00b8] (prog-if 00 ...
0
votes
0answers
12 views

Geting error “Must specify either driver or file” using physical disk in QEMU [duplicate]

I want to install windows 10 64 bit but my current verson of windows is 32 bit so it is unable to run the setup.exe file so I booted into live ubuntu 14.10 64 bit and installed qemu to use my current ...
0
votes
1answer
115 views

Geting error in qemu “No such file or directory”

I want to install windows 10 64 bit but the my current verson of windows is 32 bit so it is unable to run the setup.exe file so booted into ubuntu 14.10 64 bit and installed qemu to use my current ...