I'm probably missing the obvious here.
I use zvols on a server for time machine backups. So from MacOS's perspective, each is a separate disk, and diskutil knows that it's (in this case) ~539G large. And it's getting full (bad planning on my part).
How do I grow it? I have lots of space in the pool, but the zvol's partition map "knows" how big it is. Diskutil knows how to grow a partition into free space, but it doesn't seem to know how to grow the whole disk into space that miraculously appeared at its end. I don't really want to hand-edit the partition map if I can avoid it...
(FWIW, this is a thinly provisioned zvol. Not that I think that matters here.)
Thanks
-- perry