/usr/sbin/smartctl –all /dev/sda -d ata
smartctl version 5.38 [x86_64-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
Smartctl: Device Read Identity Failed (not an ATA/ATAPI device)

A mandatory SMART command failed: exiting. To continue, add one or more ‘-T permissive’ options.

#my ENV:
[2hei.net ~]$ uname -a
Linux 2.6.18-194.26.1.el5 #1 SMP Tue Nov 9 12:54:20 EST 2010 x86_64 x86_64 x86_64 GNU/Linux
[2hei.net ~]$ cat /etc/redhat-release
CentOS release 5.5 (Final)
[2hei.net ~]# rpm -qa|grep smart
smartmontools-5.38-2.el5
[2hei.net ~]# rpm -qf /usr/sbin/smartctl
smartmontools-5.38-2.el5

Looks Sata discs are not accessed via the ‘-d ata’ option
#smartctl –help
  -d TYPE, –device=TYPE
         Specify device type to one of: ata, scsi, marvell, sat, 3ware,N

#get rid of -d ata        
[2hei.net ~]# /usr/sbin/smartctl –all /dev/sda
smartctl version 5.38 [x86_64-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD1002FBYS-02A6B0
Serial Number:    WD-WMATV6555969
Firmware Version: 03.00C06
User Capacity:    1,000,204,886,016 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Wed Jul  6 03:32:03 2011 UTC
SMART support is: Available – device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x84)    Offline data collection activity
                    was suspended by an interrupting command from host.
                    Auto Offline Data Collection: Enabled.
Self-test execution status:      (   0)    The previous self-test routine completed
                    without error or no self-test has ever
                    been run.
Total time to complete Offline
data collection:          (18600) seconds.
Offline data collection
capabilities:              (0x7b) SMART execute Offline immediate.
                    Auto Offline data collection on/off support.
                    Suspend Offline collection upon new
                    command.
                    Offline surface scan supported.
                    Self-test supported.
                    Conveyance Self-test supported.
                    Selective Self-test supported.
SMART capabilities:            (0x0003)    Saves SMART data before entering
                    power-saving mode.
                    Supports SMART auto save timer.
Error logging capability:        (0x01)    Error logging supported.
                    General Purpose Logging supported.
Short self-test routine
recommended polling time:      (   2) minutes.
Extended self-test routine
recommended polling time:      ( 214) minutes.
Conveyance self-test routine
recommended polling time:      (   5) minutes.
SCT capabilities:            (0x303f)    SCT Status supported.
                    SCT Feature Control supported.
                    SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  Always       –       0
  3 Spin_Up_Time            0x0027   253   253   021    Pre-fail  Always       –       1100
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       –       28
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       –       0
  7 Seek_Error_Rate         0x002e   200   200   000    Old_age   Always       –       0
  9 Power_On_Hours          0x0032   089   089   000    Old_age   Always       –       8195
 10 Spin_Retry_Count        0x0032   100   253   000    Old_age   Always       –       0
 11 Calibration_Retry_Count 0x0032   100   253   000    Old_age   Always       –       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       –       26
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       –       25
193 Load_Cycle_Count        0x0032   200   200   000 &n
bsp;  Old_age   Always       –       2
194 Temperature_Celsius     0x0022   116   112   000    Old_age   Always       –       34
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       –       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       –       0
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      –       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       –       0
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      –       0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      8195         –
# 2  Short offline       Completed without error       00%      8189         –

SMART Selective self-test log data structure revision number 1
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

also some said libata patch is needed!

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