Re: bootblock and -I

[Allen Wittenauer <allenw%iobm.com@localhost>]

> On Wed, Oct 21, 1998 at 10:57:12AM -0700, Allen Wittenauer wrote:
> > 
> > Is it just me, or does the -I parameter not work in NetBSD 1.3.2 
> > w/bootblock 
> > v2.0.  It *does* work from LoadBSD v2.14 using the same kernel, however.  
> > Is 
> > there any way just force the kernel to not do synchronous xfers at all?  
> 
> 
> The code to handle it is there. I guess you have a slightly different 
> problem. Can you send me the kernel startup messages, please, which releate
> to the scsi?

Sure.  When it boots from loadbsd-2.14 [-I ff -a -S netbsd], SCSI looks like so:



ahsc0 at mainbus0
scsibus0 at ahsc0: 8 targets
sd0 at scsibus0 targ 0 lun 0: <SEAGATE, ST51080N, 0943> SCSI2 0/direct fixed
sd0: 1030MB, 4826 cyl, 4 head, 109 sec, 512 bytes/sect x 2109840 sectors
sd1 at scsibus0 targ 4 lun 0: <MAXTOR, 7120SCS, 3235> SCSI1 0/direct fixed
sd1: 121MB, 1498 cyl, 4 head, 41 sec, 512 bytes/sect x 248502 sectors


With netbsd -I ff -a -S from the bootblocks, I get this:

ahsc0 at mainbus0
scsibus0 at ahsc0: 8 targets
ahsc0 : target 0 now synchronous, period=208ns, offest=12.
sd0 at scsibus0 targ 0 lun 0: <SEAGATE, ST51080N, 0943> SCSI2 0/direct fixed
sd0: 1030MB, 4826 cyl, 4 head, 109 sec, 512 bytes/sect x 2109840 sectors
ahsc0: target 4 now synchronous, period=208ns, offeset=8.
sd1 at scsibus0 targ 4 lun 0: <MAXTOR, 7120SCS, 3235> SCSI1 0/direct fixed
sd1: 121MB, 1498 cyl, 4 head, 41 sec, 512 bytes/sect x 248502 sectors

Occasionally doing this returns a panic, as well, on an illegal instruction.  
Normally it just hangs with the SCSI bus frozen. [The kernels have been 
verified 
to be the same.]

Thanks.