I recently encountered this error doing an lvcreate with CLVM:

  VG ey00-data metadata too large for circular buffer

I've Googled and found it elsewhere.  It appears my metadata is too large for the space allocated by default on the PVs.  It also appears that everybody else has encountered this with throw-away data.  I have a very large, very live system on this.  What can I do to get more metadata space?

It's CLVM, so I can't pvmove (even if I had the metadata space to make new PVs and move this 3TB).

I can pvcreate a new PV with enough space and presumably add it to the system, but will this work?  Can it handle having one PV with enough space and others without enough space?

I absolutely have to find a solution to this, so any help would be appreciated.