Is it Geom, the mfi driver or the HBA?

[Zaphod Beeblebrox]

So... when I put a drive in my USB enclosure, it shows up as a 4T drive,
but when I attach it to my mfi-driver card, it shows up as 2T.  Not the
size that 2T drives commonly are (which is 1.8T), but 2T.

(BTW... mfi is in passs-thru mode)

So... how the world sees this drive:

da6 at mfi0 bus 0 scbus4 target 6 lun 0
da6: <ATA ST4000DM005-2DP1 0001> Fixed Direct Access SPC-3 SCSI device
da6: Serial Number ZDH1BN4H
da6: 150.000MB/s transfers
da6: Command Queueing enabled
da6: 2097151MB (4294967294 512 byte sectors)
da6: quirks=0x8<4K>

but:

[1:46:346]root at vr:~> camcontrol identify da6 | grep LBA48
LBA48 supported       7814037168 sectors

yet

is there a quirk to correct this?  If camcontrol sees 4T, why doesn't it
probe as 4T?