R-Car/Virtualization/Libvirt
< R-Car | Virtualization
Libvirt virtualization API
Virsh
'virsh' is a commandline interface to libvirt.
It can be used interactively:
$ virsh Welcome to virsh, the virtualization interactive terminal. Type: 'help' for help with commands 'quit' to quit
or by passing a subcommand directly:
$ virsh list --all Id Name State ---------------------------------------------------- - demo shut off
Preparation
Before you can instantiate a guest, you have to create an XML file describing the guest. Fortunately virsh provides a way to convert your QEMU command line invocation into an XML file. E.g.
$ virsh domxml-from-native qemu-argv <(echo /usr/bin/qemu-system-aarch64 -m 1024 -cpu cortex-a57 -M virt \ -nographic -serial pty -kernel /path/to/linux-arm64-virt/arch/arm64/boot/Image) | \ sed -e 's/unnamed/demo/' > demo.xml
Caveats:
- Use an absolute path when referring to the QEMU binary,
- As libvirt's console doesn't connect to QEMU's stdout, but to a pty, your QEMU command line must include '-serial pty',
- Make sure 'libvirt-qemu' has permissions to access the kernel Image (and write access to the directory containing it?).