zpool status
pool: tank
state: ONLINE
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
usb-SanDisk_SDSSDA-1T00_0123456789CA-0:0 ONLINE 0 0 0
da3p4 ONLINE 0 0 0
errors: No known data errors
zpool set path=/dev/disk-by-id/sdsdsdsd tank da3p4 zpool set path=/dev/gpt/my_nice_name
just type `zpool import` and you will see the name that you can import.
if you want to change the mount path use
zpool import -R /other/path poolname
to rename the pool use
zpool import original_name new_name