As luck would have it, half way through configuring my debian install I started to get a bit suspicious that one of the hard drives was making some odd noises.A quick dmesg gave the following result:
[ 1102.483303] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 1102.490402] ata2.00: failed command: FLUSH CACHE EXT
[ 1102.495443] ata2.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 1102.495453] res 40/00:01:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 1102.509100] ata2.00: status: { DRDY }
[ 1102.512800] ata2: hard resetting link
[ 1105.963276] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl F300)
[ 1109.663376] ata2.00: configured for UDMA/133
[ 1109.667680] ata2.00: device reported invalid CHS sector 0
[ 1109.673125] ata2: EH complete
[ 1185.483296] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 1185.490387] ata2.00: failed command: FLUSH CACHE EXT
[ 1185.495428] ata2.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0
I quickly installed smartctl to check what was up and got the following results for the second hard drive:
smartctl 5.40 2010-07-12 r3124 [armv5tel-unknown-linux-gnueabi] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF INFORMATION SECTION ===
Device Model: ST2000DL003-9VT166
Serial Number: 5YD2K2G9
Firmware Version: CC32
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: ATA-8-ACS revision 4
Local Time is: Thu Jun 23 10:56:00 2011 BST
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: (0x82) Offline data collection activity
was completed without error.
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: ( 623) 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: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 255) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x30b7) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 100 100 006 Pre-fail Always - 1996128
3 Spin_Up_Time 0x0003 093 093 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 26
5 Reallocated_Sector_Ct 0x0033 092 092 036 Pre-fail Always - 5696
7 Seek_Error_Rate 0x000f 100 253 030 Pre-fail Always - 358966
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 129
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 19
183 Runtime_Bad_Block 0x0032 097 097 000 Old_age Always - 3
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 099 099 000 Old_age Always - 1
188 Command_Timeout 0x0032 099 098 000 Old_age Always - 64425492496
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 064 061 045 Old_age Always - 36 (Lifetime Min/Max 31/36)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 18
193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 26
194 Temperature_Celsius 0x0022 036 040 000 Old_age Always - 36 (0 22 0 0)
195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 1996128
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 39
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 39
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 170926813478951
241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 2046017289
242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 3928948219
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
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.
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