7.12.2.5 OBP probe-scsi and probe-scsi-all Commands

To diagnose problems with the SCSI subsystem, you can use the OBP probe-scsi and probe-scsi-all commands. Both commands require that you halt the system.

When it is not practical to halt the system, you can use SunVTS software as an alternative method of testing the SCSI interfaces. See "7.1 About Diagnostic Tools" for more information.

The probe-scsi command transmits an inquiry command to all SCSI devices connected to the main logic board SCSI interfaces. These include any tape or CD-ROM drive in the removable media assembly (RMA), any internal disk drive, and any device connected to the external SCSI connector on the system back panel. For any SCSI device that is connected and active, its target address, unit number, device type, and manufacturer name are displayed.

The probe-scsi-all command transmits an inquiry command to all SCSI devices connected to the system SCSI host adapters, including any host adapters installed in PCI slots. The first identifier listed in the display is the SCSI host adapter address in the system device tree followed by the SCSI device identification data.

The first example that follows shows a probe-scsi output message. The second example shows a probe-scsi-all output message.

probe-scsi output:

ok probe-scsi
This command may hang the system if a Stop-A or halt command
has been executed. Please type reset-all to reset the system
before executing this command.
Do you wish to continue? (y/n) n
ok reset-all

ok probe-scsi
Primary UltraSCSI bus:
Target 0 
  Unit 0   Disk     SEAGATE ST34371W SUN4.2G3862
Target 4 
  Unit 0   Removable Tape     ARCHIVE Python 02635-XXX5962
Target 6 
  Unit 0   Removable Read Only device TOSHIBA XM5701TASUN12XCD0997
Target 9 
  Unit 0   Disk     SEAGATE ST34371W SUN4.2G7462
Target b 
  Unit 0   Disk     SEAGATE ST34371W SUN4.2G7462
ok

probe-scsi-all output:

ok probe-scsi-all
This command may hang the system if a Stop-A or halt command
has been executed. Please type reset-all to reset the system
before executing this command.
Do you wish to continue? (y/n) y

/pci@1f,4000/scsi@4,1
Target 0 
  Unit 0 Disk     SEAGATE ST39102LC SUN9.0G0828
Target 1 
  Unit 0 Disk     SEAGATE ST39102LC SUN9.0G0828
Target 6 
  Unit 0 Removable Read Only deviceTOSHIBA XM6201TA SUN32XCD1103
ok