Gutsy ubuntu-desktop for autoinstaller

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The autoinstaller should support more than just the etch image I hacked up.

This requires

• creating an image (sipb-xen-make-iso might be useful; at least I used it back in November for the etch image)
• adapting sipb-xen-duplicate to handle the resulting image.

With luck this will result in a sipb-xen-duplicate that has fewer magic numbers and magic knowledge and more easily handles further new distros. Say, it could run a script supplied inside the image, as I started doing before cutting that feature for this alpha version of the autoinstaller.

Probably gutsy (or hardy?) is a good target for this next image.

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I've split off a task that should remove the magic numbers and magic knowledge as #61.

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I think I'll make the next distro be Gutsy with ubuntu-desktop, and then it'll be useful for a shiny demo. This will be a nice complement to the etch image we already have.

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Did an install, as im_gutsy-dtop-i386_x32. (Trying to develop systematic names; the "x32" has two random hex digits, to help uniquify it for search-and-replace.) Remaining tasks/issues:

• tried Xubuntu, which is supposed to be resource-optimized, but the default terminal application crashes X. Oops. Installed ubuntu-desktop, with Gnome, in which both the Xubuntu-preferred xfce4-terminal and gnome-terminal work fine. Xfce really is faster, though. It'd be nice to fix it.
• Tried inserting "xset m 1" in /etc/X11/Xsession.d/some-filename, but it didn't have effect.
• copy post-copy script from ice3, the etch image
• make sipb-xen-lvcopy work on this image; has one remaining magic number, the offset to the filesystem partition as 32256 bytes, which may not be true here
• tie into web interface. (The remctl interface is already general, copying any -> any.)

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I've acl'd im_gutsy-dtop-i386_x32 to sipb-xen; anyone with ideas for these (particularly the terminal failure in Xfce and the failure of xset to do anything, neither of which I know the reason for), please go in and poke around.

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We should have a hardy installer or something, but it should use the debootstrap/xen-create-image autoinstaller. Or even a Fedora installer, using rinse in xen-create-image.