Demi Marie Obenour <demiobenour@gmail.com> writes:
systemd-sysupdate will fail if the OS image does not fit in the partitions that the installer created. Therefor, the partitions need to be very large so that there is plenty of room for the OS to grow. Furthermore, systemd-sysupdate requires both A and B copies of both the root and verity partitions.
mkfs.ext4 is not able to produce images with files large enough to hold both the primary and backup copy of the root partition [1]. Reducing the sizes of partitions to be little greater than the size of the root filesystem image does not help. The produced file is still too large. Therefore, compress the image, which causes it to be small enough that mkfs.ext4 can handle it.
This breaks the option to use the installer as a live image. Therefore, remove it. This option will return once Spectrum switches to the GNOME OS installer [2]. However, it is still possible to build a live image that is separate from the installer. Document how to build and use it.
GRUB2 does support compressed loopback images, but these presumably buffer the whole image in memory. Since the entire installer will be replaced, making it work is not considered worthwhile.
[1]: https://github.com/tytso/e2fsprogs/issues/254 [2]: https://spectrum-os.org/lists/archives/spectrum-devel/87wm4dlkhz.fsf@alyssa....
Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com> --- Changes since v4: - Replace a mention of "Try Spectrum" with a mention of the live image. - Combine instructions for building an installer and a live image. - Drop the config option for the compression level. - Drop unnecessary quoting changes. - Drop unnecessary 'set -euo pipefail'.
Changes since v3: - Make the compression level configurable. The default is 1 so that development builds finish in a reasonable amount of time. Release builds should use compression level 9.
Changes since v2: - Remove live image test instead of skipping it. - Document the change. - Document that there is still a live image available, though it is separate from the installer. - Document how to build the live image.
Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com> --- Documentation/installation/getting-spectrum.adoc | 44 ++++++++++++++++-------- host/initramfs/Makefile | 8 ----- host/initramfs/etc/probe | 20 ----------- release/checks/integration/meson.build | 2 +- release/checks/integration/try.c | 29 ---------------- release/combined/eosimages.nix | 8 ++--- release/combined/grub.cfg.in | 5 --- 7 files changed, 35 insertions(+), 81 deletions(-)
Reviewed-by: Alyssa Ross <hi@alyssa.is> But I'd still like to get to the bottom of whether release/installer works.