Areca ARC-1280ML weirdness on amd64 8.0-BETA2?

Hello world.

I've got an AMD64 ASUS motherboard with an Areca ARC-1280ML attached.
The card is neatly supported in FreeBSD, from what I've seen - all the
drives I plugged in showed up, everything was happy, I created a
10-disk RAID-Z2 across the drives, hurray. Run it for a few days,
scrub a few things, reboot a number of times, everything's a dream.

Unplug everything, move it to its final location, replug everything.

Hm, how strange. I'm only seeing /dev/da0 through da6 instead of da0
through da10 [there were 11 drives attached, one unused].

Okay, poke the ARC-1280ML directly using the sysutils/areca-cli utility.

Reports all 11 drives happily attached.

dmesg only reports notes on da0 through da6.

camcontrol reports:

# camcontrol devlist -v
scbus0 on arcmsr0 bus 0:
<Seagate ST31500341AS R001>        at scbus0 target 1 lun 0 (da0,pass0)
<Seagate ST31500341AS R001>        at scbus0 target 1 lun 1 (da1,pass1)
<Seagate ST31500341AS R001>        at scbus0 target 1 lun 2 (da2,pass2)
<Seagate ST31500341AS R001>        at scbus0 target 1 lun 3 (da3,pass3)
<Seagate ST3160827AS R001>         at scbus0 target 1 lun 4 (da4,pass4)
<Seagate ST31500341AS R001>        at scbus0 target 1 lun 5 (da5,pass5)
<Seagate ST31500341AS R001>        at scbus0 target 1 lun 6 (da6,pass6)
<Areca RAID controller R001>       at scbus0 target 16 lun 0 (pass7)
<>                                 at scbus0 target -1 lun -1 ()
scbus-1 on xpt0 bus 0:
<>                                 at scbus-1 target -1 lun -1 (xpt0)

camcontrol rescan all changes nothing.

In stark contrast, areca-cli:
# areca-cli disk info
  # Ch# ModelName                       Capacity  Usage
===============================================================================
  1  1  N.A.                               0.0GB  N.A.
  2  2  N.A.                               0.0GB  N.A.
  3  3  N.A.                               0.0GB  N.A.
  4  4  N.A.                               0.0GB  N.A.
  5  5  ST31500341AS                    1500.3GB  JBOD
  6  6  ST31500341AS                    1500.3GB  JBOD
  7  7  ST31500341AS                    1500.3GB  JBOD
  8  8  ST31500341AS                    1500.3GB  JBOD
  9  9  ST31500341AS                    1500.3GB  JBOD
 10 10  ST31500341AS                    1500.3GB  JBOD
 11 11  ST31500341AS                    1500.3GB  JBOD
 12 12  ST31500341AS                    1500.3GB  JBOD
 13 13  ST3160827AS                      160.0GB  JBOD
 14 14  ST31500341AS                    1500.3GB  JBOD
 15 15  ST31500341AS                    1500.3GB  JBOD
 16 16  N.A.                               0.0GB  N.A.
 17 17  N.A.                               0.0GB  N.A.
 18 18  N.A.                               0.0GB  N.A.
 19 19  N.A.                               0.0GB  N.A.
 20 20  N.A.                               0.0GB  N.A.
 21 21  N.A.                               0.0GB  N.A.
 22 22  N.A.                               0.0GB  N.A.
 23 23  N.A.                               0.0GB  N.A.
 24 24  N.A.                               0.0GB  N.A.
===============================================================================
GuiErrMsg<0x00>: Success.


Is there something I've missed, or is this just broken behavior?

- Rich

-- 

My own business always bores me to death; I prefer other people's. --
Oscar Wilde