RDM device from ESX - can't get disk paramters?

[Darren Reed]

Dear All,

Oh host A I had a set of disks mapped with ESX as RDMs
to a FreeBSD 9.3 VM. No problem, works fine. The goal
is to move that VM to a new host, so I migrate the VM
over and then take the hard drives out of the old host
and put them in the new one. However when FreeBSD boots
it doesn't let me use the hard drives - they probe ok
through the boot sequence:

da3: <ATA xxx 82.0> Fixed Direct Access SCSI-5 device
da3: Serial Number      xxx
da3: 6.600MB/s transfers (16bit)
da3: 0MB (0 512 byte sectors: 0H 0S/T 0C)
da3: quirks=0x8<4K>
...
da5 at mpt1 bus 0 scbus3 target 0 lun 0
da5: <ATA xxx 82.0> Fixed Direct Access SCSI-5 device
da5: Serial Number      xxx
da5: 6.600MB/s transfers (16bit)
da5: 0MB (0 512 byte sectors: 0H 0S/T 0C)
da5: quirks=0x8<4K>

but an fdisk:

fdisk: can't get disk parameters on /dev/da3
fdisk: cannot open disk /dev/da3: No such file or directory

fdisk: can't get disk parameters on /dev/da5
fdisk: cannot open disk /dev/da5: No such file or directory

I can't do anything with these devices:

dd if=/dev/da3
dd: /dev/da3: Device not configured
0+0 records in
0+0 records out
0 bytes transferred in 0.000717 secs (0 bytes/sec)
       0       0       0

Does anyone have any clues about what's gone (or is) wrong?

Cheers,
Darren