Mapping Between Logical and Physical Device Names on a Sun E450

If you need to find the slot that a disk is in from a given logical name (c3t3d0) you can follow this document from sun. I’ve mirrored the important bits below incase it disapears

1. Determine the UNIX physical device name from the SCSI error message.

   SCSI error messages are typically displayed in the system console
   and logged in the /usr/adm/messages file.

            WARNING: /pci@6,4000/scsi@4,1/sd@3,0 (sd228)
            Error for Command: read(10)     Error level: Retryable
            Requested Block: 3991014        Error Block: 3991269
            Vendor: FUJITSU                 Serial Number: 9606005441
            Sense Key: Media Error
            ASC: 0x11 (unrecovered read error), ASCQ: 0x0, FRU: 0x0
   

   In the example SCSI error message above, the UNIX physical device name is /pci@6,4000/scsi@4,1/sd@3.

2. Determine the UNIX logical device name by listing the contents of
   the /dev/rdsk directory.

   Use the grep command to filter the output for any occurrence of
   the UNIX physical device name determined in Step 1:

           % ls -l /dev/rdsk | grep /pci@6,4000/scsi@4,1/sd@3
           lrwxrwxrwx   1 root     root        45 Jan 30 09:07 c12t3d0s0 ->
           ../../devices/pci@6,4000/scsi@4,1/sd@3,0:a,raw
           lrwxrwxrwx   1 root     root        45 Jan 30 09:07 c12t3d0s1 ->
           ../../devices/pci@6,4000/scsi@4,1/sd@3,0:b,raw
           lrwxrwxrwx   1 root     root        45 Jan 30 09:07 c12t3d0s2 ->
           ../../devices/pci@6,4000/scsi@4,1/sd@3,0:c,raw
           lrwxrwxrwx1 root     root        45 Jan 30 09:07 c12t3d0s3 ->
           ../../devices/pci@6,4000/scsi@4,1/sd@3,0:d,raw
           lrwxrwxrwx   1 root     root        45 Jan 30 09:07 c12t3d0s4 ->
           ../../devices/pci@6,4000/scsi@4,1/sd@3,0:e,raw
           lrwxrwxrwx   1 root     root        45 Jan 30 09:07 c12t3d0s5 ->
           ../../devices/pci@6,4000/scsi@4,1/sd@3,0:f,raw
           lrwxrwxrwx   1 root     root        45 Jan 30 09:07 c12t3d0s6 ->
           ../../devices/pci@6,4000/scsi@4,1/sd@3,0:g,raw
           lrwxrwxrwx   1 root     root        45 Jan 30 09:07 c12t3d0s7 ->
           ../../devices/pci@6,4000/scsi@4,1/sd@3,0:h,raw
   

   The resulting output indicates the associated UNIX logical device name.
   In this example, the logical device name is c12t3d0

3. Determine the disk slot number using the prtconf command.

   Substitute the string disk@ for sd@ in the physical device name determined in Step 1. The result in this example is
   /pci@6,4000/scsi@4,1/disk@3.

   Use the grep command to find this name in the output of the
   prtconf command:

           % prtconf -vp | grep /pci@6,4000/scsi@4,1/disk@3
             slot#11:  '/pci@6,4000/scsi@4,1/disk@3'
   

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