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DHQEMU Version: 2024030101
Written by George Shearer
[email protected]
This is a thin hypervisor written in bash. It directly invokes QEMU with KVM features.
Features:
- simple command line
- implementd completely in bash - nothing resident
- global and per-guest config
- automatic adjustment of kernel hugepages
- automatic start/stop of TPM emulater daemon
- automatic creation of base vdisks and snapshot files
- Uses io_uring for vdisk I/O
- delayed commits of changes
- snapshot reverting
- hotplug usb devices
- systemd integration for stopping or starting vms with system
- simple one file backups of all necessary files for each VM
Usage: dhqemu command guestname [args] Where command is one of: boot :: power on guest bootall :: boot all guests defined to auto-start iceboot :: power on guest but in cpu suspend mode (see thaw below) reset :: issue qemu 'system_reset' wake :: issue qemu 'system_wakeup' shut :: issue qemu 'system_powerdown' shutall :: shutdown all guests managed by dhqemu kill :: immediately power off guest killall :: kill all guests managed by dhqemu freeze :: stop execution thaw :: continue execution mon :: connect to qemu monitor list :: list of dhqemu conf files dir :: show folder of guest pid :: shows list of running qemu instances show :: shows the qemu command line used to boot VM backup :: create backup archive of guest directory delete :: delete the guest folder, next boot will generate files unplug :: unplug device created with 'plug' command commands with args: clone guestname newname :: create new vm plug guestname /path/to/cdrom.iso :: hot-plug usb drive, map to file commit guestname [disknum] :: commit change disk revert guestname [disknum] :: erase change disk and recreate erase guestname [disknum] :: erase base disk and recreate