[Bug 1357093] Re: Kernels not autoremoving, causing out of space error on LVM or Encrypted installation or on any installation, when /boot partition gets full

[Jarno Suni]

No. Automatic removing is supposed to work in 16.04 and later by
default. But even in 16.04 it works only, if you let unattended-upgrades
install all kernel updates. I have not tested later releases, but I
guess it is the same thing.

I think removing should work in 16.04 and later, if you use the
configuration recommended in
https://help.ubuntu.com/community/RemoveOldKernels. (i.e. setting
Unattended-Upgrade::Remove-Unused-Dependencies "true";) This
configuration works by 14.04, too, if you let unattended-upgrades
install all kernel updates.

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https://bugs.launchpad.net/bugs/1357093

Title:
  Kernels not autoremoving, causing out of space error on LVM or
  Encrypted installation or on any installation, when /boot partition
  gets full

Status in unattended-upgrades:
  New
Status in unattended-upgrades package in Ubuntu:
  Fix Released

Bug description:
  Currently if one chooses to use LVM or encrypted install, a /boot
  partition is created of 236Mb

  Once kernel updates start being released this partition soon fills
  until people are left unable to upgrade.

  While you and I might know that we need to watch partition space, many
  of the people we have installing think that a windows disk is a disk
  and not a partition, education is probably the key - but in the
  meantime support venues keep needing to deal with the fact the
  partition is too small and/or old kernels are not purged as new ones
  install.

  For workaround and sytem repair, see
  https://help.ubuntu.com/community/RemoveOldKernels

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