dmesg warning harmless?

[Urmas Lett]

. .
Mounting root from ufs:/dev/da0s1a
da0 at ahc0 bus 0 target 0 lun 0
da0: <QUANTUM ATLAS_V_18_WLS 0230> Fixed Direct Access SCSI-3 device
da0: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing 
Enabled
da0: 17510MB (35861388 512 byte sectors: 255H 63S/T 2232C)
WARNING: #da/0x20000 si_iosize_max=0, using DFLTPHYS.
WARNING: #da/0x20004 si_iosize_max=0, using DFLTPHYS.
WARNING: #da/0x20005 si_iosize_max=0, using DFLTPHYS.

(DragonFly 1.0-CURRENT #0: Fri May 21 16:35:41 EEST 2004)