1 This document describes one way to create the rcu-test-image file 2 that contains the filesystem used by the guest-OS kernel. There are 3 probably much better ways of doing this, and this filesystem could no 4 doubt be smaller. It is probably also possible to simply download 5 an appropriate image from any number of places. 6 7 That said, here are the commands: 8 9 ------------------------------------------------------------------------ 10 dd if=/dev/zero of=rcu-test-image bs=400M count=1 11 mkfs.ext3 ./rcu-test-image 12 sudo mount -o loop ./rcu-test-image /mnt 13 14 # Replace "precise" below with your favorite Ubuntu release. 15 # Empirical evidence says this image will work for 64-bit, but... 16 # Note that debootstrap does take a few minutes to run. Or longer. 17 sudo debootstrap --verbose --arch i386 precise /mnt http://archive.ubuntu.com/ubuntu 18 cat << '___EOF___' | sudo dd of=/mnt/etc/fstab 19 # UNCONFIGURED FSTAB FOR BASE SYSTEM 20 # 21 /dev/vda / ext3 defaults 1 1 22 dev /dev tmpfs rw 0 0 23 tmpfs /dev/shm tmpfs defaults 0 0 24 devpts /dev/pts devpts gid=5,mode=620 0 0 25 sysfs /sys sysfs defaults 0 0 26 proc /proc proc defaults 0 0 27 ___EOF___ 28 sudo umount /mnt 29 ------------------------------------------------------------------------ 30 31 32 References: 33 34 http://sripathikodi.blogspot.com/2010/02/creating-kvm-bootable-fedora-system.html 35 https://help.ubuntu.com/community/KVM/CreateGuests 36 https://help.ubuntu.com/community/JeOSVMBuilder 37 http://wiki.libvirt.org/page/UbuntuKVMWalkthrough 38 http://www.moe.co.uk/2011/01/07/pci_add_option_rom-failed-to-find-romfile-pxe-rtl8139-bin/ -- "apt-get install kvm-pxe" 39 http://www.landley.net/writing/rootfs-howto.html 40 http://en.wikipedia.org/wiki/Initrd 41 http://en.wikipedia.org/wiki/Cpio 42 http://wiki.libvirt.org/page/UbuntuKVMWalkthrough 43
