This is down to initramfs-tools switching to zstd by default, which has such huge memory requirements that it gets killed by OOM on the Zero 2 (and presumably the 3A+?) which only has 512MB of RAM. The default should be switched back to lz4, at least on the Pi images.
Note to self: add a test for update-initramfs -u to the ISO tracker for the Pi server images to ensure it gets tested across the platforms.
This is down to initramfs-tools switching to zstd by default, which has such huge memory requirements that it gets killed by OOM on the Zero 2 (and presumably the 3A+?) which only has 512MB of RAM. The default should be switched back to lz4, at least on the Pi images.
Note to self: add a test for update-initramfs -u to the ISO tracker for the Pi server images to ensure it gets tested across the platforms.