On Wed, Nov 08, 2023 at 11:39:45PM -0800, Darrick J. Wong wrote: > Dave and I started looking at this too, and came up with: For rtgroups > filesystems, what if rtpick simply rotored the rtgroups? And what if we > didn't bother persisting the rotor value, which would make this casting > nightmare go away in the long run. It's not like we persist the agi > rotors. Yep. We should still fix the cast and replace it with a proper union or other means for pre-RTG file systems given that they will be around for while.