md and lvm devices are actually handled by udev rules.
For one, cryptsetup handling needs go into a waiting loop (Bug #247153), or also be handled by udev rules.
For two, the initramfs script that mounts the rootfs needs go into a waiting loop (0.5 sec intervals) for their devices (going on quickly when device gets available) and timeout after a while.
md and lvm devices are actually handled by udev rules.
For one, cryptsetup handling needs go into a waiting loop (Bug #247153), or also be handled by udev rules.
For two, the initramfs script that mounts the rootfs needs go into a waiting loop (0.5 sec intervals) for their devices (going on quickly when device gets available) and timeout after a while.