Kvm

How to determine if the host can run virtualization on hardware

• If the CPU supports hardware virtualization then ensure it is enabled on BIOS

 # egrep -c '(vmx|svm)' /proc/cpuinfo
 

How to quick launch an instance

Create and empty disk of 1Gb and launch a VM as:

 # dd if=/dev/zero of=disk.img bs=1M count=1024
 # qemu-kvm -boot d -hda disk.img -cdrom /dev/cdrom
 

On Ubuntu use `kvm` instead `qemu-kvm` command

Where

• `-boot` [order=drives][,once=drives][,menu=on|off]

  'drives': floppy (a), hard disk (c), CD-ROM (d), network (n)

• `-hda/-hdb` file use 'file' as IDE hard disk 0/1 image
• `-cdrom` file use 'file' as IDE cdrom image (cdrom is ide1 master)