I'm pretty sure you can't do this, so the question I have is what you do to reallocate the volumes when you add a bunch of new disks to the aggregates the disks reside in. Normally, I'd run a full reallocate to redistribute the data across the new disk. However, I can't run a reallocate on a SM destination. I get the obivous error stating the volume is read-only. This makes sense to me, but at the same time I'm at a loss for solution.
The only thing I can think of is to do the following:
1) Break the mirror.
2) Reallocate the volume.
3) Resync
Is there an easier or better solution than this?