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Buildscripts for Volumio System
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Streamline mkinitramfs and volumio-init-updater #463

Closed ashthespy closed 3 years ago

ashthespy commented 3 years ago

This should streamline initrmafs creating a bit.

-- Add volumio-init-updater to all devices -- Hopefully reduce initrd size a little -- Speed up initramfs creation

volumio commented 3 years ago

This shall be carefully tested before merging...

ashthespy commented 3 years ago

I know the diff looks large -- but it's due to just a file rename (mkinitramfs-buster -> mkinitramfs-custom) We have been using the same mkinitramfs-buster script since the start :-) Here is the changeset when comparing with the old mkinitramfs-buster https://www.diffchecker.com/AW1nLjbM

The main diffs are -- setting gzip level to -9 -- streamline volumio-init-updater addition

volumio commented 3 years ago

What is the advantage of -- setting gzip level to -9 ?

gkkpch commented 3 years ago

I believe the most cases the best way to reduce mkinitramfs is with using modules= list instead of modules=most. X86 may be an exception, as we currently need to load many storage device driver modules. Perhaps we should have all storage & graphics modules built-in and then also use modules=list (which drops the rest), never tried that...

volumio commented 3 years ago

We did have modules=list in the past, didn't we? what would be your ideal approach?

ashthespy commented 3 years ago

What is the advantage of -- setting gzip level to -9 ?

It should reduce the initrd size (in theory), with a penalty w.t.r time to compress man gzip

-# --fast --best Regulate the speed of compression using the specified digit #, where -1 or --fast indicates the fastest compression method (less compression) and -9 or --best indicates the slowest compression method (best compression). The default compression level is -6 (that is, biased towards high compression at expense of speed).

lol, talk about low returns :-D

Using the default -6 

[ o.k. ] Created: /boot/volumio.initrd  [ 22827 /boot/volumio.initrd ]

Now:

$ ./build.sh -d pi
<snip>
[ dbg ]  Compressing volumio.initrd with gzip -9  
[ o.k. ] Created: /boot/volumio.initrd  [ 22735 /boot/volumio.initrd ]
ashthespy commented 3 years ago

I believe the most cases the best way to reduce mkinitramfs is with using modules= list instead of modules=most. X86 may be an exception, as we currently need to load many storage device driver modules. Perhaps we should have all storage & graphics modules built-in and then also use modules=list (which drops the rest), never tried that...

It would great if we can get your modular initrd approach working on all devices! Probably once buster is settled?