[Bug 573282] [NEW] mkinitramfs doesn't use busybox-initramfs and builds unuseable initrd

[David Greaves]

Public bug reported:

Binary package hint: initramfs-tools

upgrading 9.04 to 9.10

initrd fails with "/scripts/init-top/brltty: 19: grep: not found"
see:
  http://www.mail-archive.com/linux-fai@uni-koeln.de/msg02954.html
also countless forum discussions.

it turns out that /usr/sbin/mkinitramfs has the following hardcoded:
# BUSYBOXDIR="/usr/lib/initramfs-tools/bin/"
BUSYBOXDIR="/bin"
reversing this to
BUSYBOXDIR="/usr/lib/initramfs-tools/bin/"
# BUSYBOXDIR="/bin"
allows a working initrd to be made.
A better solution may be:
test -e /bin/busybox && BUSYBOXDIR=/bin
test -e /usr/lib/initramfs-tools/bin/busybox && BUSYBOXDIR=/usr/lib/initramfs-tools/bin
which favours the initramfs version

** Affects: initramfs-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: boot busybox initrd

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mkinitramfs doesn't use busybox-initramfs and builds unuseable initrd
https://bugs.launchpad.net/bugs/573282
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