Qemu manager
Author: s | 2025-04-24
Qemu Manager is an easy to use management tool for the fantastic QEMU emulator. Similar choice. Qemu manager 7.0 windows bit; Qemu manager free download for pc; Qemu manager 7 download; Qemu manager apkpure; Download qemu manager.zip; Qemu manager for winxp;
QEMU Manager -QEMU Manager( ) v7.0 -
House: KVM is like the developer who builds the house but doesn’t do the interior design, while QEMU is like the interior design company that may not build the house well but does an excellent job with the décor. Thus, we use KVM to build the house (hardware virtualization, simulating CPU and memory resources) and QEMU for decoration (software emulation, simulating network cards, graphics cards, storage controllers, and hard disks). A QEMU virtual machine is a pure software implementation that can run independently without the KVM module, but its performance is lower. QEMU provides a full set of virtualization features, including processor virtualization, memory virtualization, and I/O device virtualization. QEMU is a user-space process that must call the functionality provided by KVM via a specific interface. From QEMU’s perspective, during the VM's operation, QEMU uses system call interfaces provided by KVM to configure the kernel, and KVM is responsible for running the VM in a special mode on the processor. KVM only simulates CPU and memory, meaning that a guest operating system can run on the host, but you cannot see or interact with it. So, someone modified the QEMU code, replacing its CPU and memory emulation with KVM, while leaving the network card, display, etc., to QEMU. Hence, QEMU + KVM together form a complete virtualization platform. KVM is just a kernel module, and users cannot interact with the kernel module directly. They need to use user-space management tools, and QEMU is one of these tools. KVM and QEMU complement each other; QEMU achieves hardware virtualization speed through KVM, and KVM relies on QEMU to emulate devices. For KVM, other user-space tools exist, such as libvirt, virsh, and virt-manager developed by RedHat, and QEMU is not the only option. So, the simple and direct understanding is: QEMU is a
qemu-manager/ at main yeppiidev/qemu-manager - GitHub
Hardware platform, which is much slower than hardware-assisted virtualization.2. What is the purpose of libvirt in KVM/QEMU?Libvirt is a toolkit and API used to manage virtualization platforms. It abstracts the management of VMs, networks, storage, and other resources. It simplifies managing KVM and QEMU through command-line tools (like virsh) or graphical tools like virt-manager.3. What is the difference between a full virtualization and para-virtualization in KVM/QEMU?Full virtualization: The guest OS is unaware it is running on a virtualized system. KVM provides complete isolation from the host system and simulates the entire hardware environment.Para-virtualization: The guest OS is modified to be aware that it’s running in a virtualized environment. It communicates directly with the hypervisor (KVM) for improved performance.ConclusionBoth QEMU and KVM are powerful virtualization technologies, each with unique strengths and weaknesses. If you need cross-platform support, flexibility, and ease of use, QEMU might be better suited for your virtualization needs. On the other hand, if performance, efficiency, and seamless integration with Linux are your priorities, KVM is a highly suitable choice. Ultimately, the decision between QEMU and KVM depends on your specific requirements, workload characteristics, and familiarity with Linux systems.Qemu Manager - basic information, download Qemu Manager
Commands to install WebVirtCloud on Ubuntu 20.04 to provide KVM with a web-based graphical user interface.WebVirtCloud is a free and open-source project that offers a GUI web interface for the command-line KVM virtualization of Linux systems. Well, if you don’t know about the KVM – stands for Kernel Virtual Machine. It is a Type-1 Hypervisor that uses the kernel of Linux to offer the virtualization environment. Whereas VirtualBox and Vmware Workstation are Type-2 hypervisors where the Guest OS doesn’t have direct as to hardware.An advantage of KVM is that the guest systems run at almost native speeds, i.e. the guest system responds almost as quickly as a native system.To manage and communicate KVM using the tools like Virt Manager we required Libvirt, a virtualization management layer. The same Libvirt API is used by the WebVirtCloud web UI to manage KVM.It can delegate Virtual Machines to users. A noVNC viewer presents a full graphical console to the guest domain. KVM is currently the only hypervisor supported. Although RedHat’s Virt-Manager is already a great GUI option to connect KVM, however, the user needs to access the server physically or over an SSH session. However, this can bypass using WebVirtCloud, a python-based software still in its initial stage of development. It offers an easy-to-understand interface that can be used to create, deploy, manage, and delete virtual machines running on a remote server using the local browser.Features:• QEMU/KVM Hypervisor and Instance Management• Get Instance status• Manage Multiple QEMU/KVM Hypervisor, Datastore pools, Networks• User-Based Authorization and Authentication• Instance Console Access with Browsers• Libvirt API-based web management UI• Supports cloud-init Datasource interface• Users can add SSH public key to root in Instance and can change root password in Instances.Steps to install WebVirtCloud on Ubuntu 20.041. Requirements• Debian based Ubuntu system• Virtualization-supported hardware• A non-root user with sudo rights• Terminal Access• Internet Connection2. Run system update using DNFIt is good to run the system update command on your system before installing any software, this reduces the chances of errors caused by the old packages.sudo dnf update && sudo dfn upgrade3. Install KVM on Ubuntu 2004Well, if you already have KVM enabled on your Ubuntu 20.04 then you don’t need to follow this step. Move to the next one. However, if you don’t have one, then of course go through all the given commands:Check Virtualization supported by your CPUcat /proc/cpuinfo | egrep "vmx|svm"If the Hardware virtualization is enabled then for Intel CPU you will get VMX in the result and for AMD – it will be SVM.Next, Install KVMsudo apt install qemu qemu-kvm libvirt-daemon bridge-utils virt-manager virtinst -yStart & Enable KVM service:sudo systemctl enable --now libvirtd4. Script to install WebVirtCloud on Ubuntu 20.04 LTSThere are a few packages. Qemu Manager is an easy to use management tool for the fantastic QEMU emulator. Similar choice. Qemu manager 7.0 windows bit; Qemu manager free download for pc; Qemu manager 7 download; Qemu manager apkpure; Download qemu manager.zip; Qemu manager for winxp;Free qemu manager Download - qemu manager for Windows
Directory.Set the QEMU paths at the Settings/QEMU tab.Create a new virtual machine and start it.Installation (Linux)Open your terminal and type in one of the commands to update your system, depending on your distro:Arch: sudo pacman -SyuDebian/Ubuntu: sudo apt-get update && sudo apt-get upgradeFedora/RHEL 8: sudo dnf upgrade --refresh or sudo dnf updateGentoo: sudo emaint -a sync && sudo emerge --ask --verbose --update --deep --newuse @worldRHEL 7: sudo yum updateSUSE and openSUSE Leap: sudo zypper patch && sudo zypper upopenSUSE Tumbleweed: sudo zypper patch && sudo zypper dupOpen your terminal and type in one of the commands to install QEMU, depending on your distribution:Arch: sudo pacman -S qemuDebian/Ubuntu: sudo apt-get install qemuFedora: sudo dnf install @virtualizationGentoo: sudo emerge --ask app-emulation/qemuRHEL: sudo yum install qemu-kvm(open-)SUSE: sudo zypper install qemuStarting with EmuGUI 2.0, you also need to install (lib)xcb-cursor0 in order for this to work.Arch: sudo pacman -S libxcb-cursorDebian/Ubuntu: sudo apt install libxcb-cursor-devFedora: sudo dnf install libxcb-cursorGentoo: sudo emerge -av x11-libs/libxcb-cursorRHEL: sudo yum install libxcb-cursor(open-)SUSE: sudo zypper in libxcb-cursorGet EmuGUI from this website and extract it.Run emugui in the EmuGUI directory (if it fails from file manager, open a terminal inside the directory and type ./emugui).Set the QEMU paths at the Settings/QEMU tab (either /usr/bin/qemu-system-* or just qemu-system-*).Create a new virtual machine and start it.Another tip: If you want a machine to run with KVM, you must open a terminal inside the directory and type: sudo ./emugui.Updating EmuGUIClose out of EmuGUI before updating.Open your internet browser of choice and go to the EmuGUIqemu-manager/qemuman.py at main yeppiidev/qemu-manager
Questions over 9 months old tho… byte0 April 18, 2021, 2:35pm 4 I discovered starwind’s V2V converter and did it that way. I am still interested to know if qemu-img will work though. Thank you for the reply. vhns April 18, 2021, 8:17pm 5 Ok, so the issue seems to be with Hyper-V rather than with VMWare or QEMU. The command you used did end up in an error for me:PS C:\Users\vhns\Downloads\Microsoft Windows 95 [VMware VM]\Windows 95> & 'C:\Program Files\qemu\qemu-img.exe' convert -p -f vmdk -O vhdx -o subformat=dynamic '.\Windows 95.vmdk' '.\Windows 95.vhdx'** (0.00/100%)ERROR:../../../util/oslib-win32.c:61:qemu_try_memalign: assertion failed: (is_power_of_2(alignment))PS C:\Users\vhns\Downloads\Microsoft Windows 95 [VMware VM]\Windows 95>Changing it to:PS C:\Users\vhns\Downloads\Microsoft Windows 95 [VMware VM]\Windows 95> & 'C:\Program Files\qemu\qemu-img.exe' convert -p -f vmdk -O vpc '.\Windows 95.vmdk' '.\Windows 95.vhd' (100.00/100%)PS C:\Users\vhns\Downloads\Microsoft Windows 95 [VMware VM]\Windows 95>did the trick.Now, that image still throws the same error in Hyper-V, both when trying to boot it directly or converting it from VHD to VHDX through Hyper-V’s manager wizard. I was able to boot the image just fine through QEMU (yes, you can boot any of the qemu-img supported image files in QEMU itself). byte0 April 18, 2021, 11:30pm 6 The reason for the conversion was to run in Hyper-V. Thankfully starwind’s tool works. thro April 19, 2021, 1:36am 7 If you’re willing to use windows to do it, star wind v2v converter can do it and is free.edit:ah, beaten. good to see others have discovered it too If you install SCVMM it can control vCenter and do conversions from vSphere to HyperV as well.qemu-manager/README.md at main yeppiidev/qemu-manager
With multiple architectures increases flexibility. Furthermore, QEMU’s ability to run without kernel privileges makes it a simpler choice for users who require less administrative control. As a kernel-based virtualization solution, KVM is tightly integrated with the Linux kernel. For users who are not familiar with Linux systems, this tight integration may lead to a steeper learning curve. However, KVM’s management tools (such as virt-manager) offer user-friendly interfaces for managing virtual machines and their configurations. For users familiar with Linux or those seeking robust virtualization management, KVM is a powerful and efficient choice.Always Back up Your Virtual MachinesAlso, don't forget that data protection is always important. No matter what you choose in the end, you can always use Vinchin Backup & Recovery to easily protect your business-critical data saved in VMs. It’s fully compatible with most mainstream KVM-based virtual platforms including Proxmox, oVirt, Red Hat Virtualization, Oracle Linux Virtualization Manager, and Huawei FusionCompute (KVM).(Native KVM is not supported for now)Besides incremental, CBT/CBT alternative driven VM backup, the software also supports file-level granular restore, instant restore, V2V (cross-platform recovery), and a bunch of other effective and advanced features.It only takes 4 steps for you to backup VMs, here will show you how to backup Proxmox VM with Vinchin Backup & Recovery:1. Select the backup object.2. Select backup destination.3. Configure backup strategies.4. Review and submit the job.Vinchin Backup & Recovery has been selected by thousands of companies and you can also start to use this powerful system with a 60-day full-featured trial! Also, contact us and leave your needs, and then you will receive a solution according to your IT environment.KVM and QEMU FAQs1. Can QEMU be used without KVM?Yes, QEMU can be used without KVM, but without hardware acceleration, performance will be significantly slower. When used without KVM, QEMU emulates the entireFree qemu manager 7.0 Download - qemu manager 7.0 for
Dock-Droid · Follow @sickcodes on TwitterDocker Android - Run QEMU Android x86 and Android ARM in a Docker! X11 Forwarding! CI/CD for Android!CapabilitiesSecurity Research of ARM apps on x86!ADB on port :5555Magisk, riru, LSPosed on Android x86SSH enabled (localhost:50922)SCRCPY enabled (localhost:5555)WebCam forwarding enabled (/dev/video0)Audio forwarding enabled (/dev/snd)GPU passthrough (/dev/dri)X11 forwarding is enabledruns on top of QEMU + KVMsupports BlissOS, custom images, VDI files, any Android x86 image, Xvfb headless modeyou can clone your container with docker commitAuthorThis project is maintained by @sickcodes Sick.Codes. (Twitter)Additional credits can be found here: thanks to @BlissRoms who maintain absolutely incredible Android x86 images. If you love their images, consider donating to the project: thanks to @zhouziyang who maintains an even more native fork Redroid!This project is heavily based on Docker-OSX: Generation Anbox Style LXC: in a Docker using BlissOS: and ashmem for use in anbox related 5.7+ Kernel distribuitons (soon to be all): disk space for bare minimum installationvirtualization should be enabled in your BIOS settingsa kvm-capable host (not required, but slow otherwise)Initial setupBefore you do anything else, you will need to turn on hardware virtualization in your BIOS. Precisely how will depend on your particular machine (and BIOS), but it should be straightforward.Then, you'll need QEMU and some other dependencies on your host:# ARCHsudo pacman -S qemu libvirt dnsmasq virt-manager bridge-utils flex bison iptables-nft edk2-ovmf# UBUNTU DEBIANsudo apt install qemu qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virt-manager# CENTOS RHEL FEDORAsudo yum install libvirt qemu-kvmThen, enable libvirt and load the KVM kernel module:sudo systemctl enable --now libvirtdsudo systemctl enable --now virtlogdecho 1 | sudo tee /sys/module/kvm/parameters/ignore_msrssudo modprobe kvmQuick Start Dock-DroidYou can run the Live OS image, or install to disk.Connect to the WiFi network called VirtWifi.BlissOS x86 Image docker run -it \ --device /dev/kvm \ -v /tmp/.X11-unix:/tmp/.X11-unix \ -e "DISPLAY=${DISPLAY:-:0.0}" \ -p 5555:5555 \ sickcodes/dock-droid:latestHeadlessly (on a server, or locally)docker run -it \ --device /dev/kvm \ -e EXTRA="-display none -vnc 0.0.0.0:99,password=on" \ -p 5555:5555 \ -p 5999:5999 \ sickcodes/dock-droid:latestFor headless, in the QEMU console, type change vnc password userAnd then connect on localhost:5999, or the server IP, or Docker IP.No Image (:naked) docker run -it \ --device /dev/kvm \ -v /tmp/.X11-unix:/tmp/.X11-unix \ -e "DISPLAY=${DISPLAY:-:0.0}" \ -v "${PWD}/android.qcow2:/home/arch/dock-droid/android.qcow2" \ -p 5555:5555 \ sickcodes/dock-droid:nakedRun without KVM (Work in Progress)This will boot, but currently does not "work".Change CPU to Penryn, which is normally hostChange ENABLE_KVM, which is normally -enable-kvmChange KVM, which is normally accel=kvm:tcgChange CPUID_FLAGS, which is normally very long.# use a spacebar in quotes-e CPU=qemu64 \-e ENABLE_KVM=' ' \-e KVM=' ' \-e CPUID_FLAGS=' ' \For example (Work in Progress):docker run -it \ -e CPU=Penryn \ -e ENABLE_KVM=' ' \ -e KVM=' ' \ -e CPUID_FLAGS=' ' \ -v /tmp/.X11-unix:/tmp/.X11-unix \ -e "DISPLAY=${DISPLAY:-:0.0}" \ -p 5555:5555 \ sickcodes/dock-droid:latestIncrease RAMIncrease. Qemu Manager is an easy to use management tool for the fantastic QEMU emulator. Similar choice. Qemu manager 7.0 windows bit; Qemu manager free download for pc; Qemu manager 7 download; Qemu manager apkpure; Download qemu manager.zip; Qemu manager for winxp; Free download qemu manager 7. Qemu manager for pc free download. Qemu manager 7.0 download. Qemu manager 7.0 windows download. Qemu manager windows 7. Qemu
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KVM-QEMUPerforming virtualization in Linux requires three components:KVM works exclusively with QEMU and performs hardware acceleration for x86 VMs with Intel and AMD CPUs. KVM and QEMU are hypervisors that emulate the VMs; the pair is often called KVM-QEMU or just KVM.QEMU is a machine emulator that can allow the host machine to emulate the CPU architecture of the guest machine. Because QEMU does not provide hardware acceleration, it works well with KVM.libvirt provides an abstraction language to define and launch VMs, but is normally used just to launch single VMs. It uses XML to represent and define the VM.This section describes how to install and set up Cumulus VX with KVM/QEMU and Libvirt on a Linux server to create the two leaf and one spine topology shown below.In the topology, leaf01 and leaf02 are the access layer switches on the network. leaf01 and leaf02 connect to spine01, which is the aggregation layer switch on the network. To facilitate additional configuration after the initial setup descibed in this guide, leaf01 and leaf02 also have two connections to each other.Follow the steps below to:Create three VMs (leaf01, leaf02, and spine01) and the network connections between themLog in to the switchesPerform basic switch configurationVerify configurationThese steps were tested with Cumulus VX 4.2, KVM/QEMU version 1:4.2-3ubuntu6.3, and Libvirt version 6.0.0 on Ubuntu Linux version 20.04.Create and Configure the VMsThe following procedure creates leaf01, leaf02, and spine01 and the network connections between them. This section assumes you have Linux and KVM experience.Download and Install the SoftwareDownload the Cumulus VX Qcow2 image for KVM.Run the following commands to install KVM, QEMU and Libvirt:local@host:~$ sudo apt update -ylocal@host:~$ sudo apt install -qy qemu ebtables dnsmasq-base qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virt-manager python3-piplocal@host:~$ sudo apt install -qy libxslt-dev libxml2-dev libvirt-dev zlib1g-devConfirm that your Linux kernel and BIOS settings permit the use of KVM hardware acceleration:local@host:~$ kvm-okINFO: /dev/kvm existsKVM acceleration can be usedCreate the VMs and Network ConnectionsCopy the qcow2 image onto a Linux server three times to create the three VMs. Name them as follows:leaf01.qcow2leaf02.qcow2spine01.qcow2Run the following commands to configure each VM. Make sure you specify the location ofmacmade/QEMU-Manager: macOS graphical frontend to QEMU
In addition to virt-manager, Red Hat Enterprise Linux 6 provides the following tools that enable you to access your guest virtual machine's console. 17.1. virt-viewervirt-viewer is a minimalistic command-line utility for displaying the graphical console of a guest virtual machine. The console is accessed using the VNC or SPICE protocol. The guest can be referred to by its name, ID, or UUID. If the guest is not already running, the viewer can be set to wait until is starts before attempting to connect to the console. The viewer can connect to remote hosts to get the console information and then also connect to the remote console using the same network transport. In comparison with virt-manager, virt-viewer offers a smaller set of features, but is less resource-demanding. In addition, unlike virt-manager, virt-viewer in most cases does not require read-write permissions to libvirt. Therefore, it can be used by non-privileged users who should be able to connect to and display guests, but not to configure them. To install the virt-viewer utility, run: # sudo yum install virt-viewerSyntax The basic virt-viewer command-line syntax is as follows: # virt-viewer [OPTIONS] {guest-name|id|uuid} The basic virt-viewer command-line syntax is as follows: Connecting to a guest virtual machine If used without any options, virt-viewer lists guests that it can connect to on the default hypervisor of the local system. To connect to a guest virtual machine that uses the default hypervisor: # virt-viewer guest-name-or-UUID To connect to a guest virtual machine that uses the KVM-QEMU hypervisor: # virt-viewer --connect qemu:///system guest-name-or-UUID To connect to a remote console using TLS: # virt-viewer --connect xen://example.org/ guest-name-or-UUID To connect to a console on a remote host by using SSH, look up the guest configuration and then make a direct non-tunneled connection to the console: # virt-viewer --direct --connect xen+ssh://[email protected]/ guest-name-or-UUID Interface By default, the virt-viewer interface provides only the basic tools for interacting with the guest: Figure 17.1. Sample virt-viewer interfaceSetting hotkeys To create a customized keyboard shortcut (also referred to as a hotkey) for the virt-viewer session, use the --hotkeys option: # virt-viewer --hotkeys=action1=key-combination1[,action2=key-combination2] guest-name-or-UUID The following actions can be assigned to a hotkey: toggle-fullscreen release-cursor smartcard-insert smartcard-remove Key-name combination hotkeys are not case-sensitive. Note that the hotkey setting does not carry over to future virt-viewer sessions. Example 17.1. Setting a virt-viewer hotkey To add a hotkey to change to full screen mode when connecting to a KVM-QEMU guest called testguest: # virt-viewer --hotkeys=toggle-fullscreen=shift+f11 qemu:///system testguestKiosk mode In kiosk mode, virt-viewer only allows the user to interact with the connected desktop, and does not provide any options to interact with the guest settings or the host system unless the guest is shut down. This can be useful for example when an administrator wants to restrict a user's range of actions to a specified guest. To use kiosk mode, connect to a guest with the -k or --kiosk option. Example 17.2. Using virt-viewer in kiosk mode To connect to a KVM-QEMU virtual machine in kiosk mode that terminates after the. Qemu Manager is an easy to use management tool for the fantastic QEMU emulator. Similar choice. Qemu manager 7.0 windows bit; Qemu manager free download for pc; Qemu manager 7 download; Qemu manager apkpure; Download qemu manager.zip; Qemu manager for winxp; Free download qemu manager 7. Qemu manager for pc free download. Qemu manager 7.0 download. Qemu manager 7.0 windows download. Qemu manager windows 7. QemuQemu Manager (Qemu GUI frontend) - The Portable - Portable
DescriptionThis repository provides tools to build Oracle Linux images for cloud deployment.Note: as of March 2024 the scripts have been refactored and introduce breaking changes. See CHANGELOG for details.The tools are architected around distribution flavours and target clouds.They currently support:Distributions:Oracle Linux 7 update 9 -- Slim (x86_64 only)Oracle Linux 8 update 10 -- Slim (x86_64 and aarch64)Oracle Linux 9 update 4 -- Slim (x86_64 and aarch64)Clouds:Microsoft Azure cloud (x86_64)Target packages: WALinuxAgentImage format: VHDOracle Cloud Infrastructure (OCI) (x86_64 and aarch64)Target packages: qemu-guest-agent / cloud-initImage format: QCOW2Note: no specific OCI tools are actually installed; this image can be used in any cloud-init based environment.Oracle Linux Virtualization Manager (OLVM) (x86_64)Target packages: qemu-guest-agent / cloud-initImage format: OLVM OVAOracle VM Server (OVM) (x86_64)Target packages: oracle-template-config + vmapiImage format: OVM OVAVagrant (VirtualBox provider) (x86_64)Target packages: VirtualBox guest additionsImage format: boxVagrant (libvirt provider) (x86_64)Target packages: nfs-utilsImage format: boxUTM (UTM for macOS) (aarch64)Target packages: noneImage format: utmNote: only for aarch64 distributionsGeneric (No cloud setup) (x86_64 and aarch64)Target packages: noneImage format: VirtualBox OVA or QCOW2 (depending on the builder used)RequirementsOverviewThe tools require a Linux host supporting KVM virtualization with the following installed:qemu-kvm (Including qemu-img)libvirtvirt-installlibguestfs (including tools)Additionally:the host architecture must match the architecture of the target image (e.g.: an aarch64 host is needed to build aarch64 images)the host kernel must support the filesystem used in the guest (e.g.: the host kernel must support btrfs to build an image with a btrfs filesystem)For building HashiCorp Vagrant boxes for the libvirt provider, download the create_box.sh third party script from the vagrant-libvirt project or install Vagrant and the vagrant-libvirt plugin.Oracle Linux 8dnf module install virtdnf install qemu-img libguestfs-tools virt-installdnf install zip # For UTM imagesOracle Linux 9dnf install libvirt qemu-kvm libguestfsdnf install qemu-img guestfs-tools virt-installdnf install zip # For UTM imagesBuild instructionsThe image builder does not require system privileges and should not be run as root.Clone this repo:git clone up a separate workspace directory where the image will be built.Ensure there is enough free space in the workspace partition, the builder will need up the two times the image size.Configure your build environment in the env.properties file (or in a copy).Minimal configuration:WORKSPACE: path of your workspace directoryISO_URL: location of the Oracle Linux distribution ISOISO_CHECKSUM: checksum for the ISO fileChecksums files are available on the Verify Oracle Linux Downloads pageCLOUD: cloud target (azure, oci, olvm, ovm, utm, vagrant-libvirt, vagrant-virtualbox or none)Run the builder as a non-privileged user:./bin/build-image.sh --env ENV_PROPERTY_FILE`Advanced configurationUsing boot ISO imagesInstead of providing an Oracle Linux distribution ISO you can use a boot ISO image.In that case, you will have to provide an URL to an installation tree and optionally additional yum repositories required by the installation.Example for an Oracle Linux 9 using the UEK boot ISO:ISO_URL=" buildsThe build tool can beComments
House: KVM is like the developer who builds the house but doesn’t do the interior design, while QEMU is like the interior design company that may not build the house well but does an excellent job with the décor. Thus, we use KVM to build the house (hardware virtualization, simulating CPU and memory resources) and QEMU for decoration (software emulation, simulating network cards, graphics cards, storage controllers, and hard disks). A QEMU virtual machine is a pure software implementation that can run independently without the KVM module, but its performance is lower. QEMU provides a full set of virtualization features, including processor virtualization, memory virtualization, and I/O device virtualization. QEMU is a user-space process that must call the functionality provided by KVM via a specific interface. From QEMU’s perspective, during the VM's operation, QEMU uses system call interfaces provided by KVM to configure the kernel, and KVM is responsible for running the VM in a special mode on the processor. KVM only simulates CPU and memory, meaning that a guest operating system can run on the host, but you cannot see or interact with it. So, someone modified the QEMU code, replacing its CPU and memory emulation with KVM, while leaving the network card, display, etc., to QEMU. Hence, QEMU + KVM together form a complete virtualization platform. KVM is just a kernel module, and users cannot interact with the kernel module directly. They need to use user-space management tools, and QEMU is one of these tools. KVM and QEMU complement each other; QEMU achieves hardware virtualization speed through KVM, and KVM relies on QEMU to emulate devices. For KVM, other user-space tools exist, such as libvirt, virsh, and virt-manager developed by RedHat, and QEMU is not the only option. So, the simple and direct understanding is: QEMU is a
2025-03-25Hardware platform, which is much slower than hardware-assisted virtualization.2. What is the purpose of libvirt in KVM/QEMU?Libvirt is a toolkit and API used to manage virtualization platforms. It abstracts the management of VMs, networks, storage, and other resources. It simplifies managing KVM and QEMU through command-line tools (like virsh) or graphical tools like virt-manager.3. What is the difference between a full virtualization and para-virtualization in KVM/QEMU?Full virtualization: The guest OS is unaware it is running on a virtualized system. KVM provides complete isolation from the host system and simulates the entire hardware environment.Para-virtualization: The guest OS is modified to be aware that it’s running in a virtualized environment. It communicates directly with the hypervisor (KVM) for improved performance.ConclusionBoth QEMU and KVM are powerful virtualization technologies, each with unique strengths and weaknesses. If you need cross-platform support, flexibility, and ease of use, QEMU might be better suited for your virtualization needs. On the other hand, if performance, efficiency, and seamless integration with Linux are your priorities, KVM is a highly suitable choice. Ultimately, the decision between QEMU and KVM depends on your specific requirements, workload characteristics, and familiarity with Linux systems.
2025-04-07Directory.Set the QEMU paths at the Settings/QEMU tab.Create a new virtual machine and start it.Installation (Linux)Open your terminal and type in one of the commands to update your system, depending on your distro:Arch: sudo pacman -SyuDebian/Ubuntu: sudo apt-get update && sudo apt-get upgradeFedora/RHEL 8: sudo dnf upgrade --refresh or sudo dnf updateGentoo: sudo emaint -a sync && sudo emerge --ask --verbose --update --deep --newuse @worldRHEL 7: sudo yum updateSUSE and openSUSE Leap: sudo zypper patch && sudo zypper upopenSUSE Tumbleweed: sudo zypper patch && sudo zypper dupOpen your terminal and type in one of the commands to install QEMU, depending on your distribution:Arch: sudo pacman -S qemuDebian/Ubuntu: sudo apt-get install qemuFedora: sudo dnf install @virtualizationGentoo: sudo emerge --ask app-emulation/qemuRHEL: sudo yum install qemu-kvm(open-)SUSE: sudo zypper install qemuStarting with EmuGUI 2.0, you also need to install (lib)xcb-cursor0 in order for this to work.Arch: sudo pacman -S libxcb-cursorDebian/Ubuntu: sudo apt install libxcb-cursor-devFedora: sudo dnf install libxcb-cursorGentoo: sudo emerge -av x11-libs/libxcb-cursorRHEL: sudo yum install libxcb-cursor(open-)SUSE: sudo zypper in libxcb-cursorGet EmuGUI from this website and extract it.Run emugui in the EmuGUI directory (if it fails from file manager, open a terminal inside the directory and type ./emugui).Set the QEMU paths at the Settings/QEMU tab (either /usr/bin/qemu-system-* or just qemu-system-*).Create a new virtual machine and start it.Another tip: If you want a machine to run with KVM, you must open a terminal inside the directory and type: sudo ./emugui.Updating EmuGUIClose out of EmuGUI before updating.Open your internet browser of choice and go to the EmuGUI
2025-04-15Questions over 9 months old tho… byte0 April 18, 2021, 2:35pm 4 I discovered starwind’s V2V converter and did it that way. I am still interested to know if qemu-img will work though. Thank you for the reply. vhns April 18, 2021, 8:17pm 5 Ok, so the issue seems to be with Hyper-V rather than with VMWare or QEMU. The command you used did end up in an error for me:PS C:\Users\vhns\Downloads\Microsoft Windows 95 [VMware VM]\Windows 95> & 'C:\Program Files\qemu\qemu-img.exe' convert -p -f vmdk -O vhdx -o subformat=dynamic '.\Windows 95.vmdk' '.\Windows 95.vhdx'** (0.00/100%)ERROR:../../../util/oslib-win32.c:61:qemu_try_memalign: assertion failed: (is_power_of_2(alignment))PS C:\Users\vhns\Downloads\Microsoft Windows 95 [VMware VM]\Windows 95>Changing it to:PS C:\Users\vhns\Downloads\Microsoft Windows 95 [VMware VM]\Windows 95> & 'C:\Program Files\qemu\qemu-img.exe' convert -p -f vmdk -O vpc '.\Windows 95.vmdk' '.\Windows 95.vhd' (100.00/100%)PS C:\Users\vhns\Downloads\Microsoft Windows 95 [VMware VM]\Windows 95>did the trick.Now, that image still throws the same error in Hyper-V, both when trying to boot it directly or converting it from VHD to VHDX through Hyper-V’s manager wizard. I was able to boot the image just fine through QEMU (yes, you can boot any of the qemu-img supported image files in QEMU itself). byte0 April 18, 2021, 11:30pm 6 The reason for the conversion was to run in Hyper-V. Thankfully starwind’s tool works. thro April 19, 2021, 1:36am 7 If you’re willing to use windows to do it, star wind v2v converter can do it and is free.edit:ah, beaten. good to see others have discovered it too If you install SCVMM it can control vCenter and do conversions from vSphere to HyperV as well.
2025-04-20