Test showed very little difference in file-size between -0 and -9 while
both compression and decompression need much less memory and compression
needs less CPU time for -0.
Supported xz versions before 5.2 also accept the -T4 option but ignore it.
Also depend on xz-utils instead of downloading pxz.
LP: #1701132
* Make non-x86 minimized images consistent with x86 by not explicitly
installing the server task.
* Clean up dangling /boot/initrd.img symlink left behind on minimized
builds.
instead of having bogus root=stuff arg generated in grub.cfg, it is
actually empty. Therefore update the sed command to make the arg in
the root= token optional. This should resolve non-booting livecd cpc
images.
Kernels which are able to boot without initramfs now dropped dependency
on initramfs-tools thus initramfs-tools can be removed from the image
instead of having to divert it to avoid initramfs generation.
unmount them, instead of working from a hard-coded list. This makes
the code resilient against other submounts being added later, including
downstream.
* Also nuke the sleep / udevadm settle calls in the process, which should
never be required and slow down the builds.
* live-build/ubuntu-cpc/functions: Add a function, teardown_mountpoint,
to reverse the work done in setup_mountpoint. Lack of this function
has forced users of setup_mountpoint to implement this separately
and the implementations have diverged. (LP: #1716992)
* live-build/ubuntu-cpc/functions: Remove umount_settle function.
The was only used where teardown_mountpoint was lacking.
/var/lib/apt, so we don't have to leave empty space in our derivative
images for packages that have been downloaded/installed/removed. This
normally isn't relevant for the installed system, since the root
filesystem will auto-expand in place on the target disk, but lets us
ship smaller images.
When update-grub is run, it will detect the disks in the build system.
Currently, we sed the grub configuration in places where this happens;
replace_grub_root_with_label moves that seddery in to a single callable
location to avoid ending up with multiple versions of it.
(It's worth noting that we also do this in 999-cpc-fixes.chroot, but as our
functions file isn't available within the chroot we don't use it there.)
In xenial, eth0 won't exist (as we've moved to systemd's predictable interface
naming), and even were it to exist, cloud-init would handle configuring it on
boot.
Francis Ginther
Robert C Jennings
Daniel Watkins
Balint Reczey
Christopher Glass
Steve Langasek
Dimitri John Ledkov
Victor Tapia
Mathieu Trudel-Lapierre
Brian Murray