Merge lp:~xnox/ubuntu-release-upgrader/eoan-kernel-sizes into lp:ubuntu-release-upgrader

[Dimitri John Ledkov]

Update kernel/initrd size calculation fallbacks to be closer to eoan reality.

[Brian Murray (brian-murray)]

Should we get this into Focal now?

[Brian Murray (brian-murray)]

Or should the sizes be double checked?

[Brian Murray (brian-murray)]

My initrd on focal is almost 100M.

[Brian Murray (brian-murray)]

This wasn't merged for Eoan and u-r-u has now moved to git, so I'm rejecting this MP but will make the changes for Focal.

review: Disapprove

Unmerged revisions

3297. By Dimitri John Ledkov on 2019-10-15

Update kernel & initrd sizes fallbacks to match eoan.

=== modified file 'DistUpgrade/DistUpgradeCache.py'
--- DistUpgrade/DistUpgradeCache.py	2019-10-09 15:41:45 +0000
+++ DistUpgrade/DistUpgradeCache.py	2019-10-15 09:46:43 +0000
@@ -69,11 +69,11 @@
     if kernel == 0:
         logging.warning(
             "estimate_kernel_initrd_size_in_boot() returned '0' for kernel?")
-        kernel = 28*1024*1024
+        kernel = 16*1024*1024
     if initrd == 0:
         logging.warning(
             "estimate_kernel_initrd_size_in_boot() returned '0' for initrd?")
-        initrd = 45*1024*1024
+        initrd = 81*1024*1024
     # add small safety buffer
     kernel += 1*1024*1024
     # safety buffer as a percentage of the existing initrd's size