DON'T USE YET!!!
I have updated the openmediavault-flashmemory plugin to use zram (via zram-config script).
zram-config is configured with the same directories that folder2ram was configured with.
I have been running it on a few systems for a few days. If anyone wants to test it, they can do that with:
I am very curious about install issues.
If you have a scheduled sync, it should be changed to: /usr/sbin/zram-config sync