Running Linux guests using Qemu 5.0+ on a Windows host, using the WHPX accelerator, may fail to start and freezes on this line: [ … ] Freeing unused kernel image memory: … These guests work fine using Qemu 4 on the same Windows host, configured to use a SkyLake CPU type. The issue can be … Continue reading Qemu 5 on Windows Host With WHPX
Category Archives: Virtualization
config for PXE Booting using isc-dhcp-server
Here is a section of the config file for isc-dhcp-server, showing the syntax to cater for a variety of PXE client types
PXE Booting Guide
Configure DHCP ServerConfiguration below is for isc-dhcp-server on Linux: # For hardware LAN Boot ROMs:option tftp-server-address 192.168.1.200;filename “pxelinux.0”;# For HyperV Guests:# option 60 = client identifieroption dhcp-client-identifier “PXEClient”;# option 66 = TFTP server nameoption tftp-server-name “192.168.1.200”;# option 67 = Bootfile nameoption bootfile-name “pxelinux.0”; 2. Configure TFTP ServerOn Linux, tftp-hpa is recommended, with a directory structure … Continue reading PXE Booting Guide
Qemu Guest Agent on Windows
Qemu Guest Agent (qemu-ga) can be installed in Windows guests virtualized on KVM or Qemu. The qemu-ga executable provides information, such as IP address or CPU statistics, to the host. Use the virtio-win-x.x.x.iso provided with your host distribution, or download from https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/Install the vioserial driver for PCI Simple Communications Controller.Install the guest agent from D:\guest-agent. However, … Continue reading Qemu Guest Agent on Windows
Qemu on Windows
Qemu can be used to run virtual guests on Windows. Recommended binaries can be downloaded from: http://lassauge.free.fr/qemu/ i386 binary provides better performance on x64, if you are happy to run a 32-bit guest. For basic machines the various selections of hardware devices generally don’t have significant impact on performance. Poor VNC code in Qemu 2.5.0 heavily … Continue reading Qemu on Windows
VMware ESXi with software bridges
If trying to bridge physical networks using a firewall distro (e.g. Zeroshell, pfSense, etc.) on a VMware ESX host, the “Promiscuous” property on the virtual switch must be set to “Accept”. It appears that when “Promiscuous” mode is not enabled VMware ESX only accepts packets destined to MAC’s on the VMware guest NIC’s. When a … Continue reading VMware ESXi with software bridges
VirtualBox with phpvirtualbox on Debian Wheezy
A rough guide to using phpvirtualbox on Debian Wheezy: Install VirtualBox: apt-get install virtualbox Create user vbox, member of group vboxusers: adduser vbox vboxusers If using the VirtualBox GUI change the VirtualBox menu item to run as vbox:(suggest installing lxmenu) VirtualBox vbox In VirtualBox GUI change the location for VM’s: File -> Preferences -> General -> Default … Continue reading VirtualBox with phpvirtualbox on Debian Wheezy
Vmware resolution in Linux guest
Add a “Virtual WIDTH HEIGHT” line after the appropriate DEPTH line in /etc/X11/xorg.conf
Copy disk images for Vmware, KVM, etc.
(Ref: Elvis, http://forums.overclockers.com.au/showthread.php?t=933797) These instructions can be used to copy full disk images over a network, including from or to physical and/or virtual machines. Because it is a bit-by-bit copy of the disk the process is independent of the file system or partition type, but there must be sufficient space on the destination disk. Individual partitions … Continue reading Copy disk images for Vmware, KVM, etc.