zfs pool checksum algorithm

[abaumgaertner]

hi,

anyone know how to find out which checksum algorithm is acutally used for an zfs pool or what is the default algorithm for checksum in freenas - checksum options on | off | fletcher2 | fletcher4 | sha256 (zfs set)

what i tried ...
zpool history - no info ...
zfs get all - Pool_A checksum on default
zpool get all - no luck ...

Thanks,
AB