I think gendered bathrooms may make sexual assaults easier, because a man invading a women's bathroom knows there won't be a strong man to knock him down.

It has been years since I last used zfs. Here's what happened to me. I had a zpool nearly full. It died of 0 B/s read/write. Previously I had to recreate a zpool because a metadata error happened from loose connection. I forgot to export before unplug several times and processes accessing it went into D state, requiring a reboot to cleanup.