Qemu syntax
From wikinotes
Disks
Documentation block device options (raw hdd, partitions, etc) https://qemu.weilnetz.de/doc/qemu-doc.html#Block-device-options disk-image types https://qemu.weilnetz.de/doc/qemu-doc.html#disk_005fimages SUSE: using devices in QEMU https://www.suse.com/documentation/sles11/book_kvm/data/cha_qemu_running_devices.html Disk Usage
qemu-system-x86_64 \ -hda disk.img `# file as partition` \ -cdrom cdrom.iso `# file as cdrom` \ -blockdev driver=file,node-name=disk,filename=disk.img `# file as raw HDD` \ -drive file=/dev/hdb,media=disk,format=raw `# real HDD` \ -drive file=/dev/sr0,media=cdrom `# real CDROM` \Creating Virtual Disks
qemu-img create -f raw myhdd.disk 4G # Create Virtual image qemu-img resize myhdd.disk +10G # You can increase disk size if needed
Networking
Networking within qemu works just like normal. However if you want your host/guest to be able to access each other's networks, you may need additional parameters.
# Reach Host from Guest ping 10.0.2.2 # Port Forwarding qemu-system-x86_64 \ -redir tcp:7777::8610 --nographic `# redirect guest:8610 to host:7777` \ -net user,hostfwd=tcp:127.0.0.1:7777-:8610 `# redirect guest:8610 to host:7777 (alternate)`
QEMU can start a samba server between the host and the guest.
qemu-system-x86_64 \ -hda /home/me/mydisk.hdd \ -net nic -net user,smb=/home/myshared/dir
Passthrough Devices
In addition to virtio devices, qemu allows you to access hardware directly. This is super powerful, and dramatically speeds up your VM.
NOTE:
This looks very promising, if VGA-passthrough and I/O is performant enough for games it should be sufficient for what I need it to do.
