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 as an alternate method of testing the SCSI interfaces. See "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. This includes 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 rear 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.
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
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 2 Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target 3 Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target 4 Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target 5 Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target 8 Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target 9 Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target a Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target b Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target c Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target d Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target e Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target f Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 /pci@1f,4000/scsi@4 Target 2 Unit 0 Disk SEAGATE ST32550W SUN2.1G0416 Target 3 Unit 0 Disk SEAGATE ST32550W SUN2.1G0416 Target 4 Unit 0 Disk SEAGATE ST32550W SUN2.1G0416 Target 5 Unit 0 Disk SEAGATE ST32430W SUN2.1G0666 Target 8 Unit 0 Disk SEAGATE ST32550W SUN2.1G0416
probe-scsi-all output continued:
Target 9 Unit 0 Disk SEAGATE ST32550W SUN2.1G0416 Target a Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target b Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target c Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target d Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target e Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 Target f Unit 0 Disk SEAGATE ST32550W SUN2.1G0418 /pci@1f,4000/scsi@3,1 /pci@1f,4000/scsi@3 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 /pci@1f,4000/pci@5/SUNW,isptwo@4 Target 1 Unit 0 Disk SEAGATE ST34371W SUN4.2G8246 Target 2 Unit 0 Disk SEAGATE ST34371W SUN4.2G8254 Target 3 Unit 0 Disk SEAGATE ST34371W SUN4.2G8246 Target 4 Unit 0 Disk SEAGATE ST34371W SUN4.2G8246 Target 5 Unit 0 Disk SEAGATE ST34371W SUN4.2G7462 Target 6 Unit 0 Disk SEAGATE ST34371W SUN4.2G7462