[Bug 1067106] Re: possible to run out of space on /boot partition when installed using auto recipe & full-disk-encryption

[C Filorux]

The essence of the bug here is that the system accumulates a pile of
kernel versions that are entirely unused.  (When this happens, the
partition fills up, and things break.)  Stated another way, the system
breaks deterministically by failing to clean up unused kernel versions
that it installed itself.  This bug is not confined to full disk
encryption, but affects all configurations with a limited /boot
partition.

This wasteful behaviour is bad, even if there is plenty disk space due
to being able to boot from LUKS with some future (eagerly awaited) grub
amazingness.

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https://bugs.launchpad.net/bugs/1067106

Title:
  possible to run out of space on /boot partition when installed using
  auto recipe & full-disk-encryption

Status in “partman-auto-crypto” package in Ubuntu:
  Confirmed
Status in “partman-auto-crypto” source package in Quantal:
  Won't Fix
Status in “partman-auto-crypto” source package in Saucy:
  Confirmed

Bug description:
  When choosing full disk encryption in the quantal version of Ubiquity,
  the resulting /boot partition seems small.

  In my test installation /boot came to 228MB.

  Assuming that each kernel+initrd comes to about 30MB, that doesn't
  leave much space for old kernels/initrds as kernel upgrades pile-up.

  Many users do not know how to clear old kernels. A full /boot will
  mean that no further apt transactions can occur until older kernels
  are removed and the newer kernel installation is completed.  Users
  will then be missing out on security updates, hardware enablements,
  and installing new packages.

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