New with this morning's kernel, during a make build:

 sd0(ahc0:0:0): SCB 1d - timed out in Data-out phase, SEQADDR == 0x111
 SCSIRATE == 0xf
 sd0(ahc0:0:0): BDR message in message buffer
 sd0(ahc0:0:0): SCB 1d - timed out in Data-out phase, SEQADDR == 0x110
 SCSIRATE == 0xf
 sd0(ahc0:0:0): no longer in timeout, status = 0
 ahc0: Issued Channel A Bus Reset. 5 SCBs aborted
 ahc0: target 2 synchronous at 20.0MHz, offset = 0xf
 ahc0: target 0 synchronous at 20.0MHz, offset = 0xf
 sd0(ahc0:0:0): undecodable sense error for opcode 0x28, data= 0x00 0x00 0x00 0x00
 ahc0: target 0 synchronous at 20.0MHz, offset = 0xf
 sd0(ahc0:0:0): SCB 1a - timed out in Data-out phase, SEQADDR == 0x111
 SCSIRATE == 0xf
 sd0(ahc0:0:0): BDR message in message buffer
 sd0(ahc0:0:0): SCB 1a - timed out in Data-out phase, SEQADDR == 0x110
 SCSIRATE == 0xf
 sd0(ahc0:0:0): no longer in timeout, status = 0
 ahc0: Issued Channel A Bus Reset. 5 SCBs aborted
 ahc0: target 2 synchronous at 20.0MHz, offset = 0xf
 ahc0: target 0 synchronous at 20.0MHz, offset = 0xf
 sd0(ahc0:0:0): SCB 16 - timed out in Data-out phase, SEQADDR == 0x111
 SCSIRATE == 0xf
 sd0(ahc0:0:0): BDR message in message buffer
 sd0(ahc0:0:0): SCB 16 - timed out in Data-out phase, SEQADDR == 0x111
 SCSIRATE == 0xf
 sd0(ahc0:0:0): no longer in timeout, status = 0
 ahc0: Issued Channel A Bus Reset. 5 SCBs aborted
 ahc0: target 2 synchronous at 20.0MHz, offset = 0xf
 ahc0: target 0 synchronous at 20.0MHz, offset = 0xf

Anything to worry about, or is it the usual check cables/termination scenario?

The above happen during the install part of the build, / and /usr are on
ahc0:0:0, my maligned lfs /usr/obj is on ahc0:2:0.

ahc0: target 0 synchronous at 20.0MHz, offset = 0xf
ahc0: target 0 using tagged queuing
sd0 at scsibus0 target 0 lun 0: <IBM, DNES-318350, SA30> SCSI3 0/direct fixed
sd0: 17501 MB, 11474 cyl, 10 head, 312 sec, 512 bytes/sect x 35843670 sectors
ahc0: target 2 synchronous at 20.0MHz, offset = 0xf
ahc0: target 2 using tagged queuing
sd1 at scsibus0 target 2 lun 0: <QUANTUM, XP34550S, LYK8> SCSI2 0/direct fixed
sd1: 4341 MB, 5899 cyl, 10 head, 150 sec, 512 bytes/sect x 8890760 sectors
ahc0: target 4 synchronous at 10.0MHz, offset = 0xf
cd1 at scsibus0 target 4 lun 0: <HP, CD-Writer+ 9200, 1.0e> SCSI4 5/cdrom removable

Cheers,

Patrick
(1.5E/i386)