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Daniel Hilst
445b755d8e
mknb stages the Genesis payload before building a netboot image, and those copies are the only point at which it learns that an installed Genesis image is unusable. The legacy branch runs two of them and keeps only the second exit status, so an unreadable root tree is invisible: mknb exits 0 having built an initramfs from nothing, and the node never boots with no error naming the cause. When the kernel copy is the one that fails, the message blames the root tree instead. Extract the staging decision as stage_genesis_payload, preserving today's behaviour exactly, so the outcome can be driven with an injected runner instead of a real Genesis tree. The test fails on this commit, 2 of 10: 'an unreadable root tree fails the step' and 'the failure names the kernel, not the root tree'. Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com> (cherry picked from commit 989deaa31eb1f3979a8db030d3ae8c404abda2fb)