Joseph Marrero Corchado 988fd4a46b lib: Add experimental unified storage support for install ...

Add an experimental --experimental-unified-storage flag to bootc install
that uses bootc's container storage (/usr/lib/bootc/storage) to pull
images first, then imports from there. This is the same approach used
for logically bound images (LBIs).

Background:
The unified storage approach allows bootc to share container images with
podman's storage, reducing disk space and enabling better integration
with podman.

Changes:
- Add --experimental-unified-storage CLI flag to install subcommands
- Add sysroot_path parameter to prepare_for_pull_unified() and pull_unified()
  to handle the different mount points during install vs upgrade/switch
- Handle container-storage transport
- Skip pull in prepare_for_pull_unified() if image already exists in
  bootc storage
- Add TMT test for install with unified storage flag
- Add TMT test for switching to unified storage on running system

The sysroot_path fix is needed because during install the target disk
is mounted at a specific path (e.g., /var/mnt), not /sysroot. Skopeo
needs the actual filesystem path to find the bootc storage.

Relates: #20

Assisted-by: Claude Code (Sonnet 4.5)
Signed-off-by: Joseph Marrero Corchado <jmarrero@redhat.com>

2025-12-14 09:42:05 -05:00

..

integration.fmf

lib: Add experimental unified storage support for install

2025-12-14 09:42:05 -05:00