Calling cgpt create when resizing zeros the MBR boot code. This worked
with the syslinux setup because the boot code was re-written. When not
using syslinux it is easier to just preserve the existing MBR instead.
Unlike SYSLINUX, GRUB2 does not recommend embedding itself in a FAT
filesystem. Instead GRUB2 prefers embedding in the space between the MBR
and first partition or using a dedicated partition that is safe from
tampering by fs utilities. In our case the space after the MBR is where
the GPT lives so we need to use the extra partition scheme instead.
The 64MB "BOOT-B" partition has never been used so we can replace it
with a 2MB partition which is more than enough for GRUB.
We have long since stopped installing anything to the /boot directory of
the root filesystem. Mount the ESP partition to /boot for consistancy
with the discoverable partition spec.
Normally Gentoo expects moving between major GCC releases to be a manual
step. In our case we want this to always be automatic, otherwise the GCC
version won't be switched at all.
Apparently expanding an empty string before a variable assignment forces
that assignment to be interpreted as a command instead. Instead of an
empty string use env as our sudo alternative when running as root.
Needed for portage 2.2. Sync URIs are included but not very useful yet
because portage only can do `git pull` but not `git clone`. An extra
helper script will be required to do the initial clone it seems.
Binary packages may be useful for re-installing a package with a
different INSTALL_MASK. Can be used to install debug symbols.
Instead of gluing in a special PROD_INSTALL_MASK for all images use
profiles to configure the differences between the base build root,
production images, and developer images. This offers much more
flexibility and is needed for providing a full dev environment in
developer images.
Using parallel_emerge has been disabled by default for all commands
except build_image for quite a while now, build_image kept it just
because it was still a bit faster than normal emerge. Keeping
parallel_emerge complicates future changes to build_image so it needs to
drop it entirely. Since that means nothing uses it by default we might
as well just rip out support for it entirely.
VHD was just for testing, raw is more useful for published images.
coreos-install will now be able to install working xen instances:
coreos-install -d /dev/xvda -o xen -c cloud-config.yml
Missed this in 7231b95a, the update zip should still be built when the
usr partition is extracted for generating updates but build_image itself
is not generating and signing the update.
The current generate_update function is now less useful, the important
part that we need is just the partition image now. Also by defaulting to
extracting the partition the old cors_generate_update which is still in
use by devserver can be removed entirely, devserver will just expect the
extracted partition image instead.
Attempting to work around an apparent race in mtools, the command
'extlinux' these days is just the install tool for mounted partitions
while 'syslinux' is for unmounted devices.
Evaluating this as a user config causes it to block on
coreos-environment-setup.service which will wait on networking. This
makes it hard to add extra tricks for testing/debugging situations where
networking is failing. For example, to trigger dhcpcd if networkd dies:
#cloud-config
write_files:
- path: /etc/systemd/system/systemd-networkd.service.d/dhcpcd.conf
content: |
[Unit]
OnFailure=dhcpcd.service
[Service]
Restart=no
The new Update() performs the same tasks as the old Resize()
in addition to formatting previously-unformatted partitions. This
allows children disk-layouts to repartition the base layout in
addition to resizing.
