KVM/QEMU how to boot from direct kernel vmlinuz and initrd with networking
Thsi is very handy when doing your own kernel development.
-m specifies how much ram (in the example it is 768MB)
-kernel specifies the path to the kernel file
-net tap,ifname=tap1,script=no (the ifname=tap1 is what you need to change and setup manually).
*Run "tunctl -b" to create a tap device and use the one it gives you for ifname=
Enable networking to the outside like this:
*Note we assume that your bridge is br0 in this example (you need to setup as a bridge for KVM to have direct network access)
tap=`tap -b`; brctl addif br0 $tap; ifconfig $tap up; /usr/libexec/qemu-kvm -m 768 -kernel /tftpboot/images/kernelfs-3.2.55 -net nic -net tap,ifname=$tap,script=no append "initrd=/initrd/location"
Tags:
kvm, qemu, kernel, vmlinuz, initrd, networkingthsi, specifies, ram, mb, ifname, manually, quot, tunctl, enable, networking, br, brctl, addif, ifconfig, usr, libexec, tftpboot, images, kernelfs, nic, append,