One more interesting tidbit: it seems that when booting with systemd, it's never enabling encrypted swap, it's just enabling normal swap using the underlying physical swap partition.
After booting with systemd:
$ sudo swapon --summary
Filename Type Size Used Priority
/dev/sda3 partition 4194300 0 -1
After booting with Upstart on the same install:
$ sudo swapon --summary
Filename Type Size Used Priority
/dev/mapper/cryptswap1 partition 4193788 0 -1
One more interesting tidbit: it seems that when booting with systemd, it's never enabling encrypted swap, it's just enabling normal swap using the underlying physical swap partition.
After booting with systemd:
$ sudo swapon --summary
Filename Type Size Used Priority
/dev/sda3 partition 4194300 0 -1
After booting with Upstart on the same install:
$ sudo swapon --summary cryptswap1 partition 4193788 0 -1
Filename Type Size Used Priority
/dev/mapper/