resize volume

Hi experts,

   I want to increase the size of a zfs volume, here is what I did:

# zfs list k2ldom/sbdld2wm40
NAME                USED  AVAIL  REFER  MOUNTPOINT
k2ldom/sbdld2wm40    30G  4.36G  29.2G  -

# zpool list k2ldom
NAME     SIZE  ALLOC   FREE    CAP  HEALTH  ALTROOT
k2ldom   278G   162G   116G    58%  ONLINE  -

# zfs volsize=60G k2ldom/sbdld2wm40

# zfs list k2ldom/sbdld2wm40
NAME                USED  AVAIL  REFER  MOUNTPOINT
k2ldom/sbdld2wm40    30G  4.36G  29.2G  -

# zpool list k2ldom
NAME     SIZE  ALLOC   FREE    CAP  HEALTH  ALTROOT
k2ldom   278G   161G   117G    58%  ONLINE  -

# zfs get volsize k2ldom/sbdld2wm40