Bug#667594: support MODULES=most in initramfs even for a netboot

[Andy Smith <andy@strugglers.net>]

Package: live-build
Version: 2.0.12-2
Severity: wishlist

If a net image is built, then currently
/usr/share/live/build/scripts/build/lb_chroot_hacks forces
chroot/etc/initramfs-tools/initramfs.conf to contain:

MODULES=netboot
BOOT=nfs
NFSROOT=auto

if it did not already have MODULES=netboot in it.

Despite doing a netboot, I would like the user to have access to any
local block devices at initramfs time in case the user wishes to use
persistence. With MODULES=netboot, the user will only ever see loop
devices at this point.

I have confirmed that setting MODULES=most still results in a working
netboot, and also does allow for persistence to work.

As far as I can see, lb_chroot_hacks happens after chroot_local-hooks or
-includes so it is not possible to provide my own
chroot/etc/initramfs-tools/initramfs.conf file.

At the moment, the messy workaround I have is to use a hook to ensure
that chroot/etc/initramfs-tools/initramfs.conf already contains:

MODULES=netboot
MODULES=most
BOOT=nfs
NFSROOT=auto

Since the file then already contains the string "MODULES=netboot",
lb_chroot_hacks does not modify it further.

Possibly the initramfs could just always have MODULES=most as it doesn't
make it very much bigger.

-- Package-specific info:

-- System Information:
Debian Release: 6.0.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686-bigmem (SMP w/1 CPU core)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages live-build depends on:
ii  debootstrap              1.0.26+squeeze1 Bootstrap a basic Debian system

Versions of packages live-build recommends:
ii  cpio                          2.11-4     GNU cpio -- a program to manage ar
ii  gnu-fdisk                     1.2.4-3    Linux fdisk replacement based on l

Versions of packages live-build suggests:
pn  dosfstools           <none>              (no description available)
ii  fakeroot             1.14.4-1            Gives a fake root environment
pn  genisoimage          <none>              (no description available)
ii  grub-legacy [grub]   0.97-64             GRand Unified Bootloader (Legacy v
pn  memtest86+ | memtest <none>              (no description available)
pn  mtools               <none>              (no description available)
pn  parted               <none>              (no description available)
pn  squashfs-tools | gen <none>              (no description available)
ii  sudo                 1.7.4p4-2.squeeze.2 Provide limited super user privile
ii  uuid-runtime         2.17.2-9            runtime components for the Univers
pn  win32-loader         <none>              (no description available)

-- no debconf information