setting WCE on SCSI disks across reboots

[Joan Picanyol i Puig]

Hi,

I'm trying to disable the write-cache on these two disks:

<SEAGATE ST318438LW 0003>          at scbus0 target 0 lun 0 (pass0,da0)
<IBM DNES-309170W SA30>            at scbus0 target 6 lun 0 (pass2,da1)

both sitting on an Adaptec 2940 U2W controller

ahc0: <Adaptec 2940 Ultra2 SCSI adapter> port 0x1000-0x10ff mem 
0xd0020000-0xd0020fff irq 11 at device 14.0 on pci0

I can set WCE to 0 using camcontrol modepage -e -m 0x08, but upon reboot
WCE is set to 1 again. AFAIK this can't be set interactively, so I am at a
loss as to how to disable the wc forever.

Any ideas?

tks
-- 
pica