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Festplatte überprüfen mit smartctl aus den smartmontools

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Draußen waren es heute 31 °C. Im Rechenzentrum war es offenbar ähnlich warm, denn gegen 15:30 Uhr hat sich ein Datenbankserver in den Feierabend verabschiedet. Der Reboot hat dann gut 30min gedauert (aufgrund der Filesystem-Checks). Das blöde ist allerdings, dass das RAID-1 nen Knacks wegbekommen hat und sich nun neu synchronisiert. Beim Support hat man mir empfohlen, die Festplatten mit smartctl einmal zu überprüfen. Das Ganze funktioniert folgendermaßen:

smartctl -son /dev/sda && smartctl -son /dev/sdb
smartctl -t short /dev/sda && smartctl -t short /dev/sdb
wait 120
smartctl -a /dev/sda
smartctl -a /dev/sdb

smartctl befindet sich übrigens im Debian/Ubuntu-Package smartmontools.

Die Ausgabe der Platten schaut aber ganz okay aus:

smartctl 5.40 2010-07-12 r3124 [x86_64-unknown-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Caviar Green (Adv. Format) family
Device Model:     WDC WD15EARS-00MVWB0
Serial Number:    WD-WMAZA3507331
Firmware Version: 51.0AB51
User Capacity:    1.500.301.910.016 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   8
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Thu Jul 26 18:51:12 2012 CEST
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:  (0x85) Offline data collection activity
was aborted 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:                 (37560) 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   253   253   021    Pre-fail  Always       -       1041
4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       11
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   090   090   000    Old_age   Always       -       7647
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       -       9
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       8
193 Load_Cycle_Count        0x0032   197   197   000    Old_age   Always       -       10221
194 Temperature_Celsius     0x0022   124   111   000    Old_age   Always       -       26
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  Short offline       Completed without error       00%      7646         -

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.

Laut dieser Webseite gibt es die folgenden wichtigen Attribute:

5 Reallocated_Sector_Ct
196 Reallocated_Event_Count
197 Current_Pending_Sector

Wenn die Raw-Werte auf 0 sind, wurden beim Schreiben keine defekten Sektoren entdeckt.

199 UDMA_CRC_Error_Count

Wenn der Raw-Wert auf 0 ist, wurden keine Übertragungsfehler (Kabel) entdeckt.

3 Spin_Up_Time
10 Spin_Retry_Count

Diese Messwerte zeigen Anlaufprobleme der Festplatte.

1 Raw_Read_Error_Rate
7 Seek_Error_Rate
195 Hardware_ECC_Recovered

Diese Attribute beschreiben Lesefehler.

Hoffen wir mal, dass man den Angaben trauen kann und die Platten noch ein paar Jährchen Ihren Dienst verrichten.