I connected some external disks to an extra SCSI controller on an SS20
today.  I expected them to become sd4, sd5 and sd6, because I have a
kernel based on GENERIC_SCSI3.  However, I saw:

  esp0 at dma0 slot 15 offset 0x800000 level 4: ESP200, 40MHz, SCSI ID 7
  scsibus0 at esp0: 8 targets, 8 luns per target

  esp1 at dma1 slot 3 offset 0x80000 level 3 (ipl 5): ESP200, 40MHz, SCSI ID 7
  scsibus1 at esp1: 8 targets, 8 luns per target

  sd1 at scsibus0 target 1 lun 0: <IBM, DDRS39130SUN9.0G, S98E> disk fixed
  sd0 at scsibus0 target 3 lun 0: <IBM, DDRS34560SUN4.2G, S98E> disk fixed

  sd3 at scsibus1 target 0 lun 0: <SEAGATE, ST318203LSUN18G, 034A> disk fixed
  sd4 at scsibus1 target 1 lun 0: <SEAGATE, ST318203LSUN18G, 034A> disk fixed
  sd2 at scsibus1 target 2 lun 0: <SEAGATE, ST318203LSUN18G, 034A> disk fixed

Because the GENERIC_SCSI3 config says:

  # Map the SCSI disk at targets 3120 to units 0123, a'la SunOS.
  sd0	at scsibus? target 3 lun ?		# first SCSI disk
  sd1	at scsibus? target 1 lun ?		# second SCSI disk
  sd2	at scsibus? target 2 lun ?		# third SCSI disk
  sd3	at scsibus? target 0 lun ?		# fourth SCSI disk

the disks on scsibus 0 (internal) were mapped as I expected but two of the
external disks (sd2 and sd3) matched the above because the scsibus is
wildcarded.  It seems to me that these lines should be:

  sd0	at scsibus0 target 3 lun ?		# first SCSI disk

etc., but is there any case where the internal SCSI bus doesn't attach to
scsibus0?

J

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