tools/testing/selftests/rcutorture/doc/rcu-test-image.txt

   1 This document describes one way to created 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