# df -hthis will show how much space it has versus how much is in use...
# zfs listthis will show where the swap space comes from (probably rpool/swap)
# zfs set volsize=2G rpool/swapset the swap filesystem to 2G
# reboot nowI am not sure if I *had* to reboot for it to take effect, but it worked well
I was going to try it at home (since I doubled the physical memory in that box) but only 1% of the swap space was in use, so I left it.