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