OK, after some logfile exchange off-list, I think we're onto something
here.  The planner examines all DLEs to decide which incremental to
promote, and selects coyote:/root.  It finishes its loop, and then
goes to attempt to promote that dump:

2792     if(dp_promote) {
2793         one_est_t *level0_est = est_for_level(dp, 0);
2794         dp = dp_promote;

Sadly, dp is NULL on line 2793.  The fix is to use dp_promote instead
of dp.  Jean-Louis, do you agree?  If so, please commit (I'm running
off for the evening).

Also, Jean-Louis, I'm leaving the chasing-down of the CHECK-DEVICE
question to you.

Gene: thanks for working so hard on this, and my apologies if I seemed
short with you.  In general, when you see something go wrong with
Amanda, it's probably best to freeze everything and get to the bottom
of it immediately.

Dustin

-- 
Open Source Storage Engineer
http://www.zmanda.com