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