Ryan Barry writes:
> Set up a ZFS mirror with the 36GB drive and break the mirror?

That's exactly what I'd do.  

> I don't know if ZFS would automagically expand to use the entire 36GB,

Yes, it will.

> and even then I'm stuck with a broken mirror until I replace the 18GB drive 
> with another 36GB (though the ideal would be to not have a mirror on the root 
> at all, due to constrained space in the case).

There's no breakage.  Just attach the 36GB drive to the existing 18GB
one, wait for the resilver to finish, then detach the 18GB drive.  The
pool will become 36GB in size once the 18GB drive is gone.

That's all there is to it.

-- 
James Carlson, Solaris Networking              <[EMAIL PROTECTED]>
Sun Microsystems / 35 Network Drive        71.232W   Vox +1 781 442 2084
MS UBUR02-212 / Burlington MA 01803-2757   42.496N   Fax +1 781 442 1677
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