I've seen ZFS being used with Postgres in a few different environments. Seems to work fine for the most part- surprisingly good compression (~8X in one case, us

I've seen ZFS being used with Postgres in a few different environments. Seems to work fine for the most part- surprisingly good compression (~8X in one case, usually lower), with the major downside being increased CPU usage when taking advantage of said compression. I think that only one or two of those environments were heavily used production instances, so if there is a serious gotcha here it might not have been apparent to me.