I had a dying drive that smart thought until it totally disappeared was a good drive, and actually all parameters did look fine but this system was causing my system to lockup and other bad behavior:
=== START OF INFORMATION SECTION ===
Device Model: WDC WD20EARS-00MVWB0
Serial Number: WD-WMAZ20139
Firmware Version: 50.0AB50
User Capacity: 2,000,398,934,016 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: Fri Jun 3 09:53:36 2011 PDT
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: (35400) 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: ( 255) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x3035) 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 191 170 021 Pre-fail Always - 5416
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 12
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 091 091 000 Old_age Always - 6833
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 - 11
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 6
193 Load_Cycle_Count 0x0032 042 042 000 Old_age Always - 475936
194 Temperature_Celsius 0x0022 117 099 000 Old_age Always - 33
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 1
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 1
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 - 2
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
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.
At the end smart did catch it, but just before it died:
un 1 17:47:52 box10 smartd[8529]: Device: /dev/sda, opened
Jun 1 17:47:52 box10 smartd[8529]: Device /dev/sda: using '-d sat' for ATA disk behind SAT layer.
Jun 1 17:47:52 box10 smartd[8529]: Device: /dev/sda, opened
Jun 1 17:47:52 box10 smartd[8529]: Device: /dev/sda, not found in smartd database.
Jun 1 17:47:52 box10 smartd[8529]: Device: /dev/sda, is SMART capable. Adding to "monitor" list.
Jun 1 17:47:53 box10 smartd[8529]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 17:47:53 box10 smartd[8529]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 18:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 18:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 18:47:53 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 18:47:53 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 19:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 19:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 19:47:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 19:47:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 20:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 20:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 20:47:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 20:47:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 21:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 21:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 21:47:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 21:47:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 22:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 22:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 22:47:53 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 22:47:53 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 23:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Jun 1 23:17:54 box10 smartd[8546]: Device: /dev/sda, 1 Offline uncorrectable sectors
Jun 1 23:47:53 box10 smartd[8546]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
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