On Sat, Aug 16, 2025 at 08:53:59AM +0100, Tim Woodall wrote: > I haven't migrated anything to trixie yet but I do have a test system. > > I've just done a kernel upgrade: > > The following NEW packages will be installed: > initramfs-tools-bin linux-image-6.12.41+deb13-amd64 > The following packages will be upgraded: > initramfs-tools initramfs-tools-core linux-image-amd64 > 3 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. > Need to get 107 MB of archives. > After this operation, 110 MB of additional disk space will be used. > > Compare this with a bookworm upgrade: > > The following NEW packages will be installed: > linux-image-6.1.0-38-amd64 > The following packages will be upgraded: > linux-image-amd64 > 1 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. > Need to get 69.1 MB of archives. > After this operation, 409 MB of additional disk space will be used. > > > root@trixie17-build:/lib/modules# du -sc * > 110600 6.12.27-amd64 > 109184 6.12.41+deb13-amd64 > 219784 total > > root@mail17:/lib/modules# du -sc * > 403676 6.1.0-37-amd64 > 403632 6.1.0-38-amd64 > 807308 total > > This is a welcome change but how has it been achieved? I can't immediately > find any "modules" packages where things might have been moved out of the > default install.
Modules are compressed now, for instance if you look at the ext4 one: ls -lh /lib/modules/6.1.0-38-amd64/kernel/fs/ext4/ext4.ko -rw-r--r-- 1 root root 2.0M Aug 2 15:13 /lib/modules/6.1.0-38-amd64/kernel/fs/ext4/ext4.ko vs. ls -lh /lib/modules/6.12.41+deb13-amd64/kernel/fs/ext4/ext4.ko.xz -rw-r--r-- 1 root root 383K Aug 12 05:28 /lib/modules/6.12.41+deb13-amd64/kernel/fs/ext4/ext4.ko.xz This was: https://salsa.debian.org/kernel-team/linux/-/merge_requests/871 (and followup work) Regards, Salvatore
