0
.EE
.in
+.TP
+.IR /sys/class/scsi_disk/ c : b : t : l /device/lunid
+The
+.I lunid
+attribute is read-only.
+This attribute contains the SCSI LUN ID for the device.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B cat /sys/class/scsi_disk/13:1:0:3/device/lunid
+0x0300004000000000
+.EE
+.in
+.TP
+.IR /sys/class/scsi_disk/ c : b : t : l /device/unique_id
+The
+.I unique_id
+attribute is read-only.
+This attribute contains a 16-byte ID
+that uniquely identifies the device within the controller.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B cat /sys/class/scsi_disk/13:1:0:3/device/unique_id
+600508B1001C6D4723A8E98D704FDB94
+.EE
+.in
+.TP
+.IR /sys/class/scsi_disk/ c : b : t : l /device/path_info
+The
+.I path_info
+attribute is read-only.
+This attribute contains the
+.IR c : b : t : l
+of the device
+along with the device type
+and whether the device is Active or Inactive.
+If the device is an HBA device,
+.I path_info
+will also display the PORT, BOX, and BAY the device is plugged into.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B cat /sys/class/scsi_disk/13:1:0:3/device/path_info
+[13:1:0:3] Direct-Access Active
+\&
+$ \c
+.B cat /sys/class/scsi_disk/12:0:9:0/device/path_info
+[12:0:9:0] Direct-Access PORT: C1 BOX: 1 BAY: 14 Inactive
+[12:0:9:0] Direct-Access PORT: C0 BOX: 1 BAY: 14 Active
+.EE
+.in
+.TP
+.IR /sys/class/scsi_disk/ c : b : t : l /device/raid_bypass_cnt
+The
+.I raid_bypass_cnt
+attribute is read-only.
+This attribute contains the number of I/O requests
+that have gone through the ioaccel path
+for ioaccel-enabled volumes.
+See the
+.B ssd_smart_path_enabled
+disk attribute section for details on ioaccel-enabled volumes.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B cat /sys/class/scsi_disk/13:1:0:3/device/raid_bypass_cnt
+0x300
+.EE
+.in
+.TP
+.IR /sys/class/scsi_disk/ c : b : t : l /device/sas_ncq_prio_enable
+The
+.I sas_ncq_prio_enable
+attribute is read/write.
+This attribute enables SATA NCQ priority support.
+This attribute works only when device has NCQ support
+and controller firmware can handle IO with NCQ priority attribute.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B echo 1 > /sys/class/scsi_disk/13:1:0:3/device/sas_ncq_prio_enable
+.EE
+.in
.SH VERSIONS
The
.B smartpqi