あるサーバのHDDの異常で動作が怪しくなった.
fsckを使ってなんとか起動したが, SMARTを見てみると, 以下のようになっていた.
=== START OF INFORMATION SECTION ===
Device Model: ST31000524AS
Serial Number: xxxxxxxx
Firmware Version: HP64
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: ATA-8-ACS revision 4
Local Time is: Tue Feb 17 19:06:41 2015 JST
...
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 0x002f 088 086 006 Pre-fail Always - 15941795
3 Spin_Up_Time 0x0023 100 100 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 58
5 Reallocated_Sector_Ct 0x0033 001 001 036 Pre-fail Always FAILING_NOW 4094
7 Seek_Error_Rate 0x002f 078 060 030 Pre-fail Always - 71770086
9 Power_On_Hours 0x0032 082 082 000 Old_age Always - 16194
10 Spin_Retry_Count 0x0033 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 58
180 Unused_Rsvd_Blk_Cnt_Tot 0x002b 100 100 000 Pre-fail Always - 1721951280
183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0
184 End-to-End_Error 0x0033 100 100 097 Pre-fail Always - 0
187 Reported_Uncorrect 0x0032 001 001 000 Old_age Always - 1901
188 Command_Timeout 0x0032 100 094 000 Old_age Always - 38655819799
189 High_Fly_Writes 0x003a 099 099 000 Old_age Always - 1
190 Airflow_Temperature_Cel 0x0022 074 066 045 Old_age Always - 26 (Lifetime Min/Max 26/26)
194 Temperature_Celsius 0x0022 026 040 000 Old_age Always - 26 (0 11 0 0)
195 Hardware_ECC_Recovered 0x003a 051 021 000 Old_age Always - 15941795
196 Reallocated_Event_Count 0x0032 001 001 036 Old_age Always FAILING_NOW 4094
197 Current_Pending_Sector 0x0032 100 097 000 Old_age Always - 1
198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline - 207
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
SMART Error Log Version: 1
ATA Error Count: 200 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 200 occurred at disk power-on lifetime: 16194 hours (674 days + 18 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 01:41:47.658 READ FPDMA QUEUED
2f 00 01 10 00 00 00 00 01:41:47.625 READ LOG EXT
60 00 08 ff ff ff 4f 00 01:41:44.947 READ FPDMA QUEUED
60 00 08 f0 74 87 4e 00 01:41:44.928 READ FPDMA QUEUED
60 00 08 e8 74 87 4e 00 01:41:44.918 READ FPDMA QUEUED
...
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% 17 -
# 2 Short offline Completed without error 00% 4 -
# 3 Extended offline Aborted by host 90% 2 -
どうやら, 数週間前から, 以下のようなログが /var/log/messages に出ていたようだ.
Feb 7 13:34:49 localhost smartd[3459]: Device: /dev/sda [SAT], 1 Currently unreadable (pending) sectors
Feb 7 13:34:49 localhost smartd[3459]: Device: /dev/sda [SAT], 207 Offline uncorrectable sectors
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