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

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3k views

Install Solaris 8 on Qemu-SPARC

I've been struggling with installing Solaris 8 Sparc-32bit on Qemu for a while. So far I've viewed several sites with instructions on how to install Solaris-sparc32bit on Qemu. But only yesterday was ...
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11 views

qemu-img convert burning CPU for nothing

I'm trying to reduce the usage of a qcow2 image. I did the following: qemu-img convert -p -f qcow2 -O qcow2 my_img.qcow2.backup my_img.qcow2 I outputs 200192 bytes and progress is stuck at 0.00%. ...
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24 views

Android-x86_64 installer does not boot in QEMU/KVM - EFI Shell appears instead

I downloaded Android x86_64 5.1-rc1 as bootable img installation image. I want to install it to a virtual machine running on Ubuntu 16.04 64 bit with UEFI using QEMU/KVM and virt-manager as graphical ...
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1answer
60 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 ...
3
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1answer
22 views

Is it possible to add description to qemu VMs?

Is it possible to add description to qemu virtual machines? I mean something similar to qemu -enable-kvm -description "RHEL test-host" .... This would allow one to easily identify virtualized hosts in ...
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0answers
11 views

understand “-netdev” option in qemu

When I start qemu with -device e1000,netdev=network0 -netdev tap,id=network0,ifname=tap299,script=no,downscript=no, then am I correct that this id=network0 creates an association between vNIC and ...
4
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1answer
2k views

Networking and Samba from a quest OS running on qemu

I'm trying to test some software on a big endian system to ensure compatibility. My plan is to use qemu on Ubuntu 12.04 to emulate a MIPS system. So far I've been able to create the quest system ...
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1answer
874 views

not syncing: Attempted to kill init! in custom kernel for qemu

I have been working on building a linux kernel for qemu. I have been following the tutorial http://xecdesign.com/compiling-a-kernel/ As of now i have been able to boot the kernel until start of init ...
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17 views

Which ports to open in ufw for Windows in QEMU

I'm running Windows 7 in QEMU under Debian using bridge-networking. However when i have ufw enabled and start Windows i can not connect to the Internet. As soon as i disable ufw the virtual ...
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35 views

CVE-2016-3710 mitigation in CentOS 7

I have a box running CentOS 7 for KVM virtualization purposes. What is proper steps to mitigate CVE-2016-3710 in my OS? $ rpm -qa --changelog qemu | grep CVE-2016-3710 shows nothing. Current ...
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1answer
3k views

How can I simulate usb storage device connection with qemu?

I'm writting a program for controlling usb storage device connections (this is a classic subject). All it's ok with my program, but now, I want to write some tests. So in order to do that, I realized ...
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0answers
17 views

Qemu and booting images

Complete beginner question: why do I have to pass an extra kernel binary when running e.g. a Debian image on an emulated Raspberry Pi? So far all docs state, the image files pose the equivalent of a ...
4
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1answer
10k views

Arch Linux in Qemu : Failed to access perfctr msr error

I got the Arch Linux (march build) iso file through bittorrent lately. I tried to run it in VM, but it only gets up to the main screen (The screen where you select what you want to do) shown below: ...
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1answer
959 views

Installation of QEMU, GCC for ARM in RHEL

We are setting up a lab which has the QEMU system to emulate an ARM processor and run assembly programs. The lab is currently setup with the host operating system as Ubuntu. We are migrating the lab ...
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0answers
83 views

Virt-manager Permission Denied when accessing NFS pool

I'm currently having this error when I'm trying to install a Virtual Machine on my NFS share. i've added my NFS share (coming from FreeNAS) to a Storage Pool on the virt-manager Another issue is ...
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4answers
3k views

running kernel on QEMU

I face this message: Failed to execute /initKernel panic - not syncing: no init found. Try passing init=option to kernel. I am using this command line: qemu-system-x86_64 -hda disk.img -kernel ...
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1answer
25 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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21 views

Libvirt: no way to use isa bus?

I found a way to run Windows95(I'm a little nostalgic and I use old systems for testing) with qemu /usr/bin/qemu-system-i386 -L pc-bios -m 64 -hda /home/user/.local/libvirt/images/win95.img -net ...
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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. ...
4
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1answer
3k views

Cannot Start KVM VM Because Missing BIOS

Whenever I attempt to start a KVM VM on Ubuntu 14.04 with the "kvm" command, I get the following error: qemu: could not load PC BIOS 'bios-256k.bin' I have searched for this file and found it ...
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20 views

xming / startx - cannot use the GUI

I'm unsure if this is the right place to ask my question but I shoot anyway. If it is not the case, i'll close it I started a GUI with startx. I'm happy with the results. However, as you can see I ...
0
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1answer
137 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: ...
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6answers
21k views

How can I chroot into a filesystem with a different architechture?

I'm trying to chroot into a Arch Linux ARM filesystem from x86_64. I've seen that it's possible to do using static qemu by copying the binary into the chroot system: $ cp /usr/bin/qemu-arm ...
0
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1answer
81 views

How to run a Raspiban in QEMU

How do you run a standard Raspbian image in QEMU? I'm following the instructions in this wiki, but the first step is failing. I downloaded the kernal kernel-qemu-4.1.13-jessie and the Raspbian ...
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1answer
65 views

Is it possible to access qemu monitor when VM is already running?

I have a qemu VM running in daemonized mode: qemu --enable-kvm -daemonize -m 512M -device e1000,netdev=network,mac=52:54:00:12:34:58 -netdev tap,id=network,ifname=tap301,script=no,downscript=no ...
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1answer
48 views

How can I merge 2 disk images into one with 2 partitions?

I have 2 (relatively small) disk images for qemu (raw format) containing different filesystems (say fat and ext4). I want to put them into an usb stick as two different partitions so that I can plug ...
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1answer
32 views

Bridging two virtual machines on difference bridges

I have two VMs: vm1 & vm2. The host and VMs both are Ubuntu 14.04 LTS. Each VM "connects" to a bridge which connects to a virtual ethernet interface and end up at eth0 i.e. vm1 (192.168.0.23) ...
0
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1answer
46 views

What step am I missing to get my 2.6 ARM kernel running in QEMU?

I am trying to cross-compile and boot a Linux 2.6 kernel for ARM using QEMU. I have basically followed the same instructions that are included in seemingly every single tutorial on the topic. ...
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2answers
3k 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 ...
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0answers
49 views

qemu-system-arm problems adding second NIC/bridge

I am running Qemu under a host with two bridge interfaces and would simply like to bridge them to guest NICs. All of this works fine when bridging one NIC either by creating a bridge manually or using ...
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29 views

How to firewall qemu/kvm guest in host machine?

I have a qemu guest with following network topology: Internet <-> eth1.96[bridge]tap96 <-> eth0[guest] I need to allow access to guest machine only from one specific /24 network and I ...
1
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1answer
26 views

utility to view qemu virtualized hardware

I have one qemu VM running in my PC: # cat -A /proc/$(pgrep qemu)/cmdline | sed 's/\^@/ /g'; echo qemu-system-x86_64 -enable-kvm -no-user-config -daemonize -cpu Haswell -smp 2,cores=2 -m 4G -device ...
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0answers
15 views

qemu - linux kernel doesn't recognize the supplied disk image

I'm trying to run Linux kernel on qemu from scratch. I've started working on a minimal configured kernel (after running make allnoconfig) and trying to configure only the things needed. So I have an ...
0
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1answer
46 views

qemu: boot from cdrom

I'm trying to install xubuntu on a usb flash drive following this quide. The command I'm running is qemu-system-x86_64 -drive file=/dev/sdc,media=disk,index=0,format=raw -cdrom ...
0
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1answer
121 views

HOWTO: Fix “Cannot parse sensitivity level in s0” error when attempting to start a KVM VM after a major OS upgrade

I have a Lenovo ThinkPad T430 running Red Hat Enterprise Linux 6.7 with kernel 2.6.32-573.8.1.el6.x86_64. This is a work computer and my corporate policy states that I must keep my operating system up ...
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1answer
84 views

How to mount qcow2 image

I've read that with qemu-nbd and the network block device kernel module, I can mount a qcow2 image. I haven't seen any tutorials on mounting a qcow2 via a loop device. Is it possible? If not, why? I ...
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0answers
35 views

Trouble accessing QEMU monitor without X or VNC

I am using QEMU on Debian, I am running Windows guests, I have no X environment installed and i am not trying to use a VNC server. I am starting QEMU directly from the console and using VDL to display ...
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0answers
104 views

How do I install Remix OS in GNOME Boxes?

Remix OS is an interesting desktopification of Android. It can run off a read-write-able USB stick but it doesn’t have an installer. I can boot it up in GNOME Boxes just fine, but as I’m just running ...
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0answers
29 views

Curses interface for text-mode Xen DomU's

QEMU implements an -options curses (previously -curses) flag for text-mode OSs. From the qemu(1) man page: Normally, QEMU uses SDL to display the VGA output. With this option, QEMU can display ...
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0answers
19 views

qemu-kvm on windows, use cd/dvd drive direct access

Friend asked me to remotely (teamviewer) diagnose why CD/dvd drive on his windows laptop do not recognize (nor even eject) any CD... It is probably windows10-driver error, but reinstaling drivers do ...
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0answers
37 views

How do I specify an alternative bridge interface (not br0) when using qemu-bridge-helper

By following the instructions found at http://wiki.qemu.org/Features/HelperNetworking I can configure qemu with qemu-bridge-helper, however, I can't figure out how to pass a bridging interface option ...
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2answers
494 views

How can I store files in the mounted shared folder?

I am running a Fedora Workstation virtual machine on an Ubuntu host. I created a folder /home/cl/share in the guest and mounted the shared folder /media/cl/system/virtual/share as root following the ...
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0answers
48 views

Booting into linux kernel 4.1.3 using qemu

I am trying to boot into a compiled Linux 4.1.3 bzImage (disabled modules, so I only had to make bzImage). Correspondingly, I installed ubuntu 15.10 (with Upstart, not systemd) on a qemu cow2 image ...
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2answers
574 views

Making /dev/net/tun available to qemu?

I have created a tap device (tap0) which I would like to provide as a network interface to qemu. I created the device with the following command and attached it to a network bridge I set up: tunctl ...
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0answers
26 views

How to debug a bash script in a qemu-arm chroot

I'm running a debian debootstrap script which creates an arm system. However, the script fails at some point and the error message does not really help. So I'll have to do some more debugging which is ...
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0answers
17 views

how qemu interacts with guest os io requests?

the Linux io stack (eg the path of an io request) is something like this: now when such a guest OS is a Linux distro in qemu, the path is the same except in this case there is no disk and scheme is ...
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0answers
38 views

Dive into qemu source code to trace io requests

I searched a lot about qemu and read its documentation but could not find any explaining its I/O stack. Specifically, I want to know about how an I/O request is created and what path it travels to ...
3
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1answer
156 views

Can I enable cephx authentication using a pool in qemu/kvm?

(CentOS 7, Ceph Incunabulus, everything patched up to date) Background I've got a working converged Ceph/qemu/kvm cluster with cephx enabled for authentication. I'm trying to use this to store block ...
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0answers
59 views

QEMU kernel panic to serial port

I'm working with kernel 2.6.13.1 on Debian 6 with QEMU/KVM for a class. The kernel, once installed, panics on boot. The curses interface to qemu doesn't seem to allow scrollback to view the entire ...
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1answer
52 views

Qemu curses interface dimensions

I'm running a virtual machine from qemu with the -curses flag in order to view it over a slow ssh connection. Everything works well enough, but the terminal window that I have to interact with the ...