[Bug 1716999] Re: installer creates rather small /boot partition

[Mathieu Trudel-Lapierre]

for Kernels of 8Mb, initrd of 55Mb and bootloader of ~10Mb:

2* ( 3*8 + 4*55 + 10 )
2* ( 24  +  220 + 10 )
2* ( 254 )
508

We're slightly off with the math right now, so I'll make the absolute
minimum size for /boot to be 512Mb; and bump the maximum from 512 to
768. This should give us partition sizes of a little over 512, probably
around 650Mb (so some room for future kernel/initrd growth).

** Changed in: partman-auto (Ubuntu)
       Status: New => In Progress

** Changed in: partman-auto (Ubuntu)
   Importance: Undecided => High

** Changed in: partman-auto (Ubuntu)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox)

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https://bugs.launchpad.net/bugs/1716999

Title:
  installer creates rather small /boot partition

Status in partman-auto package in Ubuntu:
  In Progress

Bug description:
  The installer (in 16.04 and 17.10) creates a separate /boot partition,
  when required, of only 487M. This ends up being rather small when you
  using the following equation to estimate a minimal size allowing for
  reasonable room for further growth.

  (2*(3*kernel + 4*plymouth-carrying initrd + bootloader))

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