amd64 current can't configure a FFSv1 disk

[mlh%goathill.org@localhost (MLH)]

I recently installed amd64 current  NetBSD 7.99.3 (GENERIC) #0 Mon
Dec 15 on a new disk running FFSv2:

wd0 at atabus3 drive 0
wd0: <ST1000DM003-1ER162>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 931 GB, 1938021 cyl, 16 head, 63 sec, 512 bytes/sect x 1953525168 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd0(ahcisata1:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA)

file system: /dev/rwd0a
format  FFSv2
endian  little-endian

I have the same version of i386 current (NetBSD 7.99.3 (GENERIC)
Mon Dec 15 running on FFSv1

wd1 at atabus4 drive 0
wd1: <ST500DM002-1BC142>
wd1: drive supports 16-sector PIO transfers, LBA48 addressing
wd1: 465 GB, 969021 cyl, 16 head, 63 sec, 512 bytes/sect x 976773168 sectors
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd1(ahcisata1:1:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA)

file system: /dev/rwd1a
format  FFSv1
endian  little-endian

The i386 version can access and mount both drives but the amd64
version can't access the FFSv1 drive above.  Any attempt to access
it results in "Device not configured", as in:

$ disklabel wd1
wd1: Device not configured

The amd64 version can mount FFSv1 drives over usb (sd0) though.

The sata controller supposedly supports 4 drives as 4 separate
devices and I also tried wd1 on a separate (jmide0) sata controller
and the drive is still not accessible so it doesn't appear to be
a controller issue.

Any idea of what's up with amd64 current here?

----------------------

ahcisata1 at pci0 dev 31 function 2: vendor 8086 product 1c02 (rev. 0x05)
ahcisata1: interrupting at ioapic0 pin 19
ahcisata1: 64-bit DMA
ahcisata1: AHCI revision 1.30, 4 ports, 32 slots, CAP 0xef22ff43<EMS,PSC,SSC,PMD,SPM,ISS=0x2=Gen2,SCLO,SAL,SALP,SSS,SSNTF,SNCQ,S64A>
atabus3 at ahcisata1 channel 0
atabus4 at ahcisata1 channel 1
atabus5 at ahcisata1 channel 4
atabus6 at ahcisata1 channel 5
...
ahcisata1 port 0: device present, speed: 3.0Gb/s
ahcisata1 port 1: device present, speed: 3.0Gb/s
ahcisata1 port 5: device present, speed: 1.5Gb/s
atapibus0 at atabus2: 2 targets
wd0 at atabus3 drive 0
wd0: <ST1000DM003-1ER162>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 931 GB, 1938021 cyl, 16 head, 63 sec, 512 bytes/sect x 1953525168 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd0(ahcisata1:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA)
wd1 at atabus4 drive 0
wd1: <ST500DM002-1BC142>
wd1: drive supports 16-sector PIO transfers, LBA48 addressing
wd1: 465 GB, 969021 cyl, 16 head, 63 sec, 512 bytes/sect x 976773168 sectors
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd1(ahcisata1:1:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA)
atapibus1 at atabus6: 1 targets
cd1 at atapibus1 drive 0: <Memorex MRX-550L v4, CSAJ5121200003, AM62> cdrom removable
cd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
cd1(ahcisata1:5:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100) (using DMA)

...

jmide0 at pci4 dev 0 function 0: vendor 197b product 2363 (rev. 0x10)
jmide0: 1 PATA port, 2 SATA ports
jmide0: interrupting at ioapic0 pin 17
ahcisata0 at jmide0
ahcisata0: AHCI revision 1.10, 2 ports, 32 slots, CAP 0xc722ff01<PSC,SSC,PMD,SPM,ISS=0x2=Gen2,SCLO,SAL,SALP,SNCQ,S64A>
atabus0 at ahcisata0 channel 0
atabus1 at ahcisata0 channel 1
jmide0: PCI IDE interface used
jmide0: bus-master DMA support present
jmide0: primary channel wired to native-PCI mode
jmide0: primary channel is unused
jmide0: secondary channel wired to native-PCI mode
jmide0: secondary channel is PATA
atabus2 at jmide0 channel 1