Subject: kern/23079: sd(4) fails to get geometry from SCSI disk
To: None <>
From: Matthias Scheler <>
List: netbsd-bugs
Date: 10/07/2003 17:32:05
>Number:         23079
>Category:       kern
>Synopsis:       sd(4) fails to get geometry from SCSI disk
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 07 15:33:01 UTC 2003
>Release:        NetBSD 1.6ZC 2003-10-06 sources
Matthias Scheler                        
NetBSD 1.6ZC NetBSD 1.6ZC (IVANOVA) #0: Tue Oct  7 11:50:24 CEST 2003 sparc
Architecture: sparc
Machine: sparc
After upgrading from NetBSD 1.6W to 1.6ZC my SPARCStation LX produces the
following message on system startup:

dma0 at sbus0 slot 4 offset 0x8400000: DMA rev 2
esp0 at dma0 slot 4 offset 0x8800000 level 4: ESP200, 40MHz, SCSI ID 7
scsibus0 at esp0: 8 targets, 8 luns per target
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 0 lun 0: <IBM, DCAS-34330, S65A> disk fixed
sd0: fabricating a geometry
sd0: 4134 MB, 4134 cyl, 64 head, 32 sec, 512 bytes/sect x 8467200 sectors
sd0: sync (100.00ns offset 15), 8-bit (10.000MB/s) transfers, tagged queueing
root on sd0a dumps on sd0b
sd0: fabricating a geometry
sd0: fabricating a geometry

It looks very suspicious to me that sd(4) isn't able to get the geometry
from that disk and has to fabricate one.

Boot system and watch kernel messages.

None provide.