[Systems] Ailing drive on housetree
Bernie Innocenti
bernie at codewiz.org
Fri Nov 11 21:46:36 EST 2011
Today I finally figured out why housetree was reporting high load
occasionally without any apparent activity on the VMs.
It turns out that sdb is dying, and we didn't even have smartd running.
Luckily, sdb is part of RAID1 arrays with triple-redundancy. We could
continue operating with 2 drives for some time, but I'd feel safer if we
replaced the drive as soon as possible. After all, the remaining drives
are the same model and have been operating for the same amount of time
(806 days).
Here's what I did to remove the drive from the arrays:
mdadm --fail /dev/md0 /dev/sdb1
mdadm --remove /dev/md0 /dev/sdb1
mdadm --fail /dev/md1 /dev/sdb5
mdadm --remove /dev/md1 /dev/sdb5
This is the (rather obscure) output of smartctl:
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: Seagate Barracuda 7200.11 family
Device Model: ST31000333AS
Serial Number: 9TE1DRMJ
Firmware Version: CC3H
User Capacity: 1,000,204,886,016 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 8
ATA Standard is: ATA-8-ACS revision 4
Local Time is: Fri Nov 11 21:12:17 2011 EST
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: ( 617) 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: ( 206) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x103f) SCT Status supported.
SCT Error Recovery Control 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 105 099 006 Pre-fail Always - 9353217
3 Spin_Up_Time 0x0003 100 100 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 46
5 Reallocated_Sector_Ct 0x0033 094 094 036 Pre-fail Always - 286
7 Seek_Error_Rate 0x000f 077 060 030 Pre-fail Always - 21724259579
9 Power_On_Hours 0x0032 078 078 000 Old_age Always - 19503
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 46
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 079 079 000 Old_age Always - 21
188 Command_Timeout 0x0032 100 099 000 Old_age Always - 167506280487
189 High_Fly_Writes 0x003a 040 040 000 Old_age Always - 60
190 Airflow_Temperature_Cel 0x0022 065 053 045 Old_age Always - 35 (Lifetime Min/Max 27/39)
194 Temperature_Celsius 0x0022 035 047 000 Old_age Always - 35 (0 21 0 0)
195 Hardware_ECC_Recovered 0x001a 034 021 000 Old_age Always - 9353217
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 68637872376787
241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 345453600
242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 1348943976
SMART Error Log Version: 1
ATA Error Count: 21 (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 21 occurred at disk power-on lifetime: 19362 hours (806 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 6f b9 8f 02
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 80 3f b9 8f 42 00 8d+05:28:25.873 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 8d+05:28:25.845 READ NATIVE MAX ADDRESS EXT
ec 00 00 00 00 00 a0 02 8d+05:28:25.825 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 02 8d+05:28:25.793 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 e0 00 8d+05:28:25.765 READ NATIVE MAX ADDRESS EXT
Error 20 occurred at disk power-on lifetime: 19362 hours (806 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 6f b9 8f 02
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 80 3f b9 8f 42 00 8d+05:28:22.543 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 8d+05:28:22.515 READ NATIVE MAX ADDRESS EXT
ec 00 00 00 00 00 a0 02 8d+05:28:22.495 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 02 8d+05:28:22.463 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 e0 00 8d+05:28:22.435 READ NATIVE MAX ADDRESS EXT
Error 19 occurred at disk power-on lifetime: 19362 hours (806 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 6f b9 8f 02
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 80 3f b9 8f 42 00 8d+05:28:19.273 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 8d+05:28:19.245 READ NATIVE MAX ADDRESS EXT
ec 00 00 00 00 00 a0 02 8d+05:28:19.225 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 02 8d+05:28:19.192 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 e0 00 8d+05:28:19.165 READ NATIVE MAX ADDRESS EXT
Error 18 occurred at disk power-on lifetime: 19362 hours (806 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 6f b9 8f 02
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 80 3f b9 8f 42 00 8d+05:28:15.972 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 8d+05:28:15.945 READ NATIVE MAX ADDRESS EXT
ec 00 00 00 00 00 a0 02 8d+05:28:15.925 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 02 8d+05:28:15.892 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 e0 00 8d+05:28:15.865 READ NATIVE MAX ADDRESS EXT
Error 17 occurred at disk power-on lifetime: 19362 hours (806 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 6f b9 8f 02
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 80 3f b9 8f 42 00 8d+05:28:12.712 READ FPDMA QUEUED
27 00 00 00 00 00 e0 00 8d+05:28:12.685 READ NATIVE MAX ADDRESS EXT
ec 00 00 00 00 00 a0 02 8d+05:28:12.664 IDENTIFY DEVICE
ef 03 46 00 00 00 a0 02 8d+05:28:12.632 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 e0 00 8d+05:28:12.605 READ NATIVE MAX ADDRESS EXT
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.
--
_ // Bernie Innocenti
\X/ http://codewiz.org
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