No EEI status available

[administrador]

patito:root:> mt status

DEVIOGET ELEMENT CONTENTS
---------------- --------
category DEV_TAPE
bus DEV_SCSI
interface SCSI
device DLT7000
adpt_num 0
nexus_num 0
bus_num 6
ctlr_num 6
slave_num 34
dev_name tz
unit_num 34
soft_count 0
hard_count 149
stat 0x0

category_stat 0x0
DEV_85700_BPI

DEVGETINFO ELEMENT CONTENTS
------------------ --------
media_status 0x10000
POS_VALID
unit_status 0x101
Ready 2_FM_Close NO_Rewind Buffered
record_size 0
density (current) 85700 BPI
density (on write) 0 BPI
Filemark Cnt 0
Record Cnt 1
Class 2 - RDAT

MTIOCGET ELEMENT CONTENTS
---------------- --------
mt_type MT_ISSCSI
mt_dsreg 0x0
mt_erreg 0x20 No error or no sense info.
ILI
mt_resid 60416
mt_fileno 0
mt_blkno 1
DEV_EEI_STATUS
version 0x2
status 0x0 No EEI status available
flags 0x1000007
CAM_STATUS SCSI_STATUS SCSI_SENSE CAM_DATA
cam_status 0x4 CCB request completed with an err
scsi_status 0x2 SCSI_STAT_CHECK_CONDITION
scsi_sense_data (hex)
f0 0 20 0 0 ec 0 16
0 0 0 1 0 0 0 0
0 0 80 0 c7 0 0 52
9d 0 83 74 cd 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0
ASC/ASQ = 0/0 NO Additional Sense Information


when i use mt status, it appears:

No EEI status available

what is the meaning of this one?