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

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3
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1answer
277 views

How can I figure out which pty's are from which qemu?

I'm running qemu's like this: $ sudo qemu -boot d -m 1024 \ -netdev tap,id=tap0 \ -device virtio-net-pci,netdev=tap0,id=vth0 \ -drive file=ubuntu.iso,media=cdrom,cache=none,if=ide \ -monitor pty \ ...
3
votes
1answer
289 views

Emulate unplugging a network cable with qemu-kvm

[Background: I'd like to actually test How to take down a static network interface when not connected? ] I'm setting up a QEMU-KVM virtual machine using libvirt (via virt-manager). I put two NICs on ...
1
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0answers
95 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 : ...
0
votes
2answers
1k views

QEMU how to ping host network?

I'm trying to ping from guest to my host network without success. qemu-system-x86_64 -hda debian_squeeze_amd64_standard.qcow2 -netdev user,id=user.0 -device e1000,netdev=user.0 I try to ping a ...
2
votes
2answers
480 views

ttyO ports do not have the good port address on QEMU 1.4.0 running image for beagleboard-xm

I'm running an Linux Image (kernel 3.2.8) for beagleboard-xm on QEMU's 1.4.0 emulator Ubuntu distribution for 13.04. My image is created using Buildroot beagle_defconfig. I added some pkgs to be able ...
2
votes
1answer
53 views

Theoretical possibilities for cpu emulation built into boot-loader or kernel?

Is it a crazy idea to somehow make a blend of grub and qemu in order to boot linux kernels or any kernel of any cpu type supported by qemu or the built-in cpu? I know it might be impossible to detach ...
1
vote
1answer
287 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 + ...
3
votes
1answer
273 views

Booting grub legacy via qemu using pxe

I have been trying to boot grub legacy via qemu using pxe. For some reason, the grub does not display the menu and enters into the command mode after displaying the following error. Error15: File not ...
0
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3answers
260 views

NFS server on qemu guest

I need to know how I can mount block devices, placed on a qemu guest system, from host. So in this case we have NFS server placed on guest system and NFS client on the host's side. There are a lot ...
3
votes
1answer
1k 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 ...
2
votes
1answer
126 views

QEMU Direct Access to Video Card (or, QEMU Video Output without X11)

I have a system that boots up into Linux at power on and then needs to boot into Windows XP Embedded. After messing around with kexec and grub4dos, things aren't working out too well. One idea that ...
0
votes
1answer
45 views

How much success can I expect with Qemu On PowerPC Linux?

I'm on Ubuntu 12.04 for PowerPC and I installed Qemu just for kicks, having experience using it in the past to build an iso for an arm tablet, and upon doing a search I found this installed on my ...
2
votes
2answers
556 views

Iptables port forwarding to qemu vm

Is it possible to create an IPtables rule that forwards all incoming traffic on port 80 on the host to port 80 of the qemu VM? Is such a scenario possible with qemu?
0
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0answers
17 views

Preparing an initrd for qemu [duplicate]

I have compiled a bzImage but when I try to run it in qemu I get a kernel panic because I don't have an initrd file. So I create one by following the steps in this question but I cannot get it to ...
4
votes
2answers
2k views

Linux kernel is not finding the initrd correctly

I had compiled a linux kernel and I wanted to debug it in QEMU. I created a file to boot from by doing the commands $ qemu-img create -f raw disk.img 200M $ mkfs.ext2 -F disk.img # mkdir /mnt/rootfs ...
0
votes
1answer
2k 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 ...
2
votes
1answer
1k views

How do you mount an ext2 formatted qemu disk image?

I am having issues mounting an image I created with the qemu-img program. Every time I attempt to invoke mount upon the subsequent file, it responds with failed to setup loop device: No such file or ...
2
votes
1answer
1k views

Kernel and QEMU : Unable to mount root fs error

I am trying to run a distro in the virtual disk image with a custom kernel,so that I can experiment and debug the kernel. I followed this to make a disk image and then install Debian to it. Now I ...
2
votes
1answer
786 views

Debugging Linux Kernel with QEMU

I was trying to study the debugging of kernel using QEMU. I tried initially and failed due to the fact that there was no virtual file system. The answers to this post suggests that there should be a ...
8
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2answers
2k views

How can I restore default window size in KVM/QEMU

In KVM/QEMU machine window size by default matches guest OS resolution. But if I resize windows (accidently) how to restore default size?
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0answers
113 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 ...
3
votes
1answer
2k views

qemu - two clients (tap0 & tap1) via br0 can't ping eachother but server pings ok

I've got: A host system running Ubuntu with KVM (functional) Two clients, one Ubuntu and one Windows 7, nothing fancy. I've also setup (see below) a bridge via br0 for the clients: br0: ...
5
votes
3answers
2k views

How do I send a shutdown event to a QEMU guest (OpenBSD)?

I'm using virtualisation solely to install OpenBSD onto the bare hardware, and during the installation, the redirection to the serial port didn't get configured, so, I ended up with the system ...
1
vote
1answer
147 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 ...
2
votes
1answer
450 views

Can QEMU/KVM+OCFS2 be configured to punch holes in sparse image files when files are deleted in the guest?

I'm using sparse raw image files for guest VMs and OCFS2 on the host (local-only, not clustered) for the reflink feature. I understand from Googling around that OCFS2 is one of the filesystems that ...
7
votes
1answer
2k views

booting qemu/kvm directly from a file system

Having used Xen and its pygrub for a while, I'm now trying to do something similar with KVM/qemu. Basically, I have a LVM logical volume (though that could as well be a file) that contains the root ...
8
votes
2answers
7k views

How to boot EFI kernel using QEMU (kvm)?

Hey guys I'm trying to emulate a EFI enviroment using QEMU (kmv), virtualbox takes 15 minutes to boot in EFI mode using archboot. Using legacy BIOS mode I can boot using this command: ...
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vote
2answers
1k views

Running Linux kernel in Virtualbox

I just built a Linux kernel on Ubuntu and now I want to make it run on VirtualBox. I wanted it to be in an img format. I created a hard drive image by doing the commands: $ qemu-img create disk.img ...
2
votes
1answer
1k views

Running bzImage in QEMU

I compiled the kernel by doing make menuconfig and make. I was trying to run the bzImage in qemu, by doing qemu -kernel bzImage but it didn't work out: How can I fix it? How can I run the bzImage ...
6
votes
1answer
2k views

Load Linux bzImage in QEMU?

I compiled a Linux by doing make menuconfig then make and now I have compiled the most recent version of Linux. How can I load the kernel into QEMU?
4
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0answers
175 views

Socksifying a qemu-kvm using tsocks

I'm trying to socksify a qemu-kvm using tsocks, but I have no success. I don't know if qemu access directly the hardware, skipping the OS or something like that, but I wasn't able to do this feat. ...
1
vote
1answer
779 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 ...
8
votes
4answers
10k 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 ...
2
votes
0answers
610 views

Qemu doesn't boot kernel after “Uncompressing Linux… done, booting the kernel. ”

I've compiled qemu for s5pc110 (it's from http://gitorious.org/samsung-linux-platform/qemu, somebody had added support for s5pc110), version 0.12. But when I load the kernel: qemu-system-arm -M ...
2
votes
2answers
1k views

Compiling FreeRTOS on ubuntu

How could I compile the FreeRTOS Source Code and run it (possibly on qemu) on Ubuntu 11.04?
11
votes
3answers
11k views

How do I boot from a liveusb using qemu-kvm?

I am trying to get qemu-kvm to boot from my live usb stick. Is this possible?
2
votes
1answer
2k views

How to convert Windows 7 partitions to qcow2?

I know I can use qemu-img tool to convert a raw partition into a image file. But Windows 7 has two partitions. I tried: qemu-img convert /dev/sda1 /dev/sda2 win7.qcow2 But the generated file does ...
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0answers
425 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 ...
5
votes
1answer
4k views

QEMU-KVM and internal DHCP server

I have set up a few soon-to-be production VMs running on QEMU-KVM on Ubuntu 10.04 LTS. As for networking, I chose the "NAT" option in Virt-Manager and each VM now gets an IP address 192.168.122.x ...
1
vote
3answers
1k views

Qemu terminating on signal x from pid xxxx

I've been all over google and back and I cannot locate any information on this particular error. qemu: terminating on signal 15 from pid 3111 I'm using Virtualizor to launch new KVM VPS on my ...
3
votes
2answers
5k views

How to copy qemu raw images?

I want to backup kvm virtual machines and copy machine's images another path or usb disk? How to copy " qemu raw images"?
7
votes
1answer
3k views

Running Debian i386 binary on Debian armel via qemu

I am trying to follow this guide to set up a Ventrilo server on my SheevaPlug, running Debian armel. This page states that I can use QEMU to run the binary that was made for i386 on my arm system. ...
1
vote
1answer
640 views

fdisk hangs on “Syncing disk” when resizing a raw QEMU image

I'm using fdisk to resize the partitions on a raw QEMU image. When I write the new partition table, it hangs at "Syncing disks." Note that I'm running fdisk as non-root since I don't need root to ...
1
vote
1answer
710 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 ...
0
votes
1answer
899 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 ...
5
votes
1answer
1k views

Move qcow2 image to physical hard drive

I have a qcow2 image that I use to boot an installation of linux using QEMU; I would like to place the contents of that image directly onto a physical hard drive so that I can boot to that linux ...
2
votes
2answers
1k views

How to make new KVM with existing hard drive

I've been looking through the options of the QEMU binary, and I can't work this one out: Is it possible to make a new KVM machine with an existing hard drive image with an OS (XP Pro in this case) ...
2
votes
1answer
518 views

Do I need hardware support for KVM for virtio paravirtualisation

Unfortunately I need to run virtual system on the machine without hardware support for visualisation. From kvm page I read that kvm is needed however it is not mentioned whether they mean the kernel ...
1
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0answers
347 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
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 \ ...