The new disk size alignment left too much extra space at the end of the
disk which would lead to pointless resizing on first boot. Fill in the
extra space so that no more than 1MB is left unused.
The VHD disk format internally includes CHS addressing and qemu-img
respectfully aligns disk images to the common 16 heads 63 sectors
geometry when possible. This is unfortunate since images uploaded to
Azure must also be aligned to 1MB we normally do.
Since qemu-img doesn't have a way to handle this well right now adjust
our existing alignment logic to create disk images aligned to both.
I am unsure exactly what situation is causing the loopback partition
device node to not exist when it is being mounted but this should help
work around the situation and log loudly about it so we can hopefully
figure out where to dig further.
Version 4 is too low. Some VMware products even crash trying to
upgrade it to a greater version (VMware Fusion 6 Pro). Having at
least 7 will allow us to use some modern features in most VMware
products, such as enabling vmxnet3 virtual network adapters or adding
much more memory and cpu cores to virtual machines.
Pruning files via INSTALL_MASK in the profile is a bit more apropriate
since it allows us to keep most of that info in one place. The only
parts that need to be deleted or adjusted here are inputs and outputs of
`env-update` which has to be run after everything is installed.
Previously we didn't actually clean up `env.d` at all which lead at
least one user to think they should edit those files and run
`env-update` themselves but we don't ship that tool on prod images.
This sets the IMG_FORCE_OEM_PACKAGE variable to the supplied string. If a
':' is present, what follows it gets put in the IMG_FORCE_OEM_USE variable
and what precedes in the former.
_get_vm_opt() has been modified to generally support forced overrides such
as this one, simply set variables named IMG_FORCE_$opt.
Now you can do things like:
for fmt in cloudstack \
digitalocean \
ec2-compat:ec2 \
ec2-compat:openstack \
ec2-compat:brightbox \
exoscale \
gce \
hyperv \
rackspace \
rackspace-onmetal; do
./image_to_vm.sh --format=qemu --oem_pkg=$fmt
../build/images/amd64-usr/latest/coreos_developer_qemu.sh -curses
done
rather than having to modify build_library/vm_image_util.sh to test oem
builds in qemu.
This code is not applicable to us, it predates CoreOS and is a weird
thing for common.sh to be doing as well. Instead always define
CHROOT_TRUNK_DIR to /mnt/host/source, create ~/trunk in make_chroot.
My primary use case for this flag is to fix booting with UEFI firmware
which can have problems when mixed with KVM, adding kexec into the mix
doesn't help matters either. The current version of OVMF can boot from
virtio drives just fine so that is now enabled and KVM is disabled.
So the -s option can also mean sloooooooow but boots!
The new grub install script must be called after the image is unmounted
and the old bootloaders script doesn't need to touch grub at all. For
now we will continue to use the existing syslinux configs but
interpreted by grub. Beyond the grub menu flashing by during boot
everything should still be functionally equivalent.
This script replaces the standard grub-install tool to give us some more
control over what is going and ensure grub-install's auto-detection
magic doesn't make any incorrect choices. Also this script sets up a
loopback device and mounts the EFI partition in just the right way for
grub-bios-setup's auto-detection magic to work correctly.
I've chosen not to adapt disk_util to use partitioned loop devices to
make grub happy because ensuring loop devices get cleaned up properly
for the general case gets tricky and less robust.
The passing ROOT= as an environment variable to board wrapper scripts
doesn't work, the script unconditionally overrides it. This means so far
our packages.txt files have listed the contents of /build/amd64-usr
instead of the image. Fix this by calling equery directly instead.
previously check_etag.sh would not create a blank file if it did
not exist. The result was that the first time check_etag.sh was
run it would always exit non-zero.
Currently building images on older kernels will fail because mkfs.btrfs
enables an incompatible feature 'extref' by default. We never really
made this requirement explicit and the SDK in general has continued to
maintain compatibility with older kernels. Make the requirement explicit
so users will get errors quicker and there is a clear line for what
kernel features can be used in the SDK.
Not currently used, this configuration which sets up grub to re-use the
syslinux configuration only works with recent git versions, not any
releases. Compatibility is also limited because the serial configuration
in syslinux must be duplicated in the grub config.
We don't need to do anything like manually install the MBR boot code
for grub but we do need to continue to expose the ESP partition as a
hybrid partition to support pvgrub.
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.
