Configure Fedora Cloud with GPT with Hybrid Boot

Fedora Cloud is now set up so that it builds the disk with
GPT partitioning and has a specific partitioning layout so
that the resulting images are equipped to boot either with
legacy BIOS or UEFI.

Reference: https://fedoraproject.org/wiki/Changes/FedoraCloudHybridBoot

Signed-off-by: Neal Gompa <ngompa13@gmail.com>

fedora-cloud-base-gcp.ks

@@ -9,7 +9,7 @@
 # Don't show bootloader as it's impossible for the user to get to it in time
 # So we might as well not waste the 1 second on each boot.
 # https://cloud.google.com/compute/docs/import/import-existing-image
-bootloader --timeout=0 --append="no_timer_check net.ifnames=0 console=ttyS0,38400n8d"
+bootloader --timeout=0 --location=mbr --append="no_timer_check net.ifnames=0 console=ttyS0,38400n8d"
 
 # redefine `services` here to drop cloud-init systemd unit enablements from
 # fedora-cloud-base.ks since we don't use them.

fedora-cloud-base-vagrant.ks

@@ -19,7 +19,7 @@ rootpw vagrant
 # even on VirtualBox virt, we get a primary network device with "eth0" as the name
 # This simplifies things and allows a single disk image for both supported Vagrant
 # platforms (virtualbox and kvm)
-bootloader --timeout=1 --append="no_timer_check console=tty1 console=ttyS0,115200n8 net.ifnames=0 biosdevname=0"
+bootloader --timeout=1 --location=mbr --append="no_timer_check console=tty1 console=ttyS0,115200n8 net.ifnames=0 biosdevname=0"
 
 %packages
 # The default koji Vagrantfile configuration uses rsync to sync files between

fedora-cloud-base.ks

@@ -32,13 +32,19 @@ rootpw --lock --iscrypted locked
 firewall --disabled
 
 # We pass net.ifnames=0 because we always want to use eth0 here on all the cloud images.
-bootloader --timeout=1 --append="no_timer_check net.ifnames=0 console=tty1 console=ttyS0,115200n8"
+bootloader --timeout=1 --location=mbr --append="no_timer_check net.ifnames=0 console=tty1 console=ttyS0,115200n8"
 
 services --enabled=sshd,cloud-init,cloud-init-local,cloud-config,cloud-final
 
-zerombr
-clearpart --all
-autopart --type=btrfs --noswap
+# Configure for gpt with bios+uefi
+clearpart --all --initlabel --disklabel=gpt
+part biosboot  --size=1    --fstype=biosboot
+part /boot/efi --size=100  --fstype=efi
+part /boot     --size=500  --fstype=ext4 --label=boot
+part btrfs.007 --size=2000 --fstype=btrfs --grow
+btrfs none --label=fedora btrfs.007
+btrfs /home --subvol --name=home LABEL=fedora
+btrfs /     --subvol --name=root LABEL=fedora
 
 %include fedora-repo.ks
 
@@ -87,6 +93,10 @@ qemu-guest-agent
 ##### begin kickstart post ###########################################
 %post --erroronfail
 
+# Blivet sets pmbr_boot flag erroneously and we need to purge it
+# otherwise it'll fail to boot
+parted /dev/vda disk_set pmbr_boot off
+
 # linux-firmware is installed by default and is quite large. As of mid 2020:
 #   Total download size: 97 M
 #   Installed size: 268 M