Hey, guys
See further below extracted output from a daily scrub showing csum
errors on sdb, part of a raid1 btrfs. Looking back, it has been getting
errors like this for a few days now.
The disk is patently unreliable but smartctl's output implies there are
no issues. Is this somehow standard faire for S.M.A.R.T. output?
Here are (I think) the important bits of the smartctl output for
$(smartctl -a /dev/sdb) (the full results are attached):
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED
WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 100 253 006 Pre-fail
Always - 0
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail
Always - 1
7 Seek_Error_Rate 0x000f 086 060 030 Pre-fail
Always - 440801014
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
200 Multi_Zone_Error_Rate 0x0000 100 253 000 Old_age
Offline - 0
202 Data_Address_Mark_Errs 0x0032 100 253 000 Old_age
Always - 0
-------- Original Message --------
Subject: Cron <root@watricky> /usr/local/sbin/btrfs-scrub-all
Date: Tue, 18 Nov 2014 04:19:12 +0200
From: (Cron Daemon) <root@watricky>
To: brendan@watricky
WARNING: errors detected during scrubbing, corrected.
[snip]
scrub device /dev/sdb2 (id 2) done
scrub started at Tue Nov 18 03:22:58 2014 and finished after 2682
seconds
total bytes scrubbed: 189.49GiB with 5420 errors
error details: read=5 csum=5415
corrected errors: 5420, uncorrectable errors: 0, unverified errors: 164
[snip]
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.17.2-1-ARCH] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 7200.10
Device Model: ST3250410AS
Serial Number: 6RYF5NP7
Firmware Version: 4.AAA
User Capacity: 250,059,350,016 bytes [250 GB]
Sector Size: 512 bytes logical/physical
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA/ATAPI-7 (minor revision not indicated)
Local Time is: Tue Nov 18 09:16:03 2014 SAST
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
See vendor-specific Attribute list for marginal Attributes.
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: ( 430) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off
support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No 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: ( 64) minutes.
SCT capabilities: (0x0001) SCT Status 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 100 253 006 Pre-fail Always
- 0
3 Spin_Up_Time 0x0003 099 097 000 Pre-fail Always
- 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always
- 68
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always
- 1
7 Seek_Error_Rate 0x000f 086 060 030 Pre-fail Always
- 440801057
9 Power_On_Hours 0x0032 044 044 000 Old_age Always
- 49106
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always
- 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always
- 89
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always
- 0
189 High_Fly_Writes 0x003a 098 098 000 Old_age Always
- 2
190 Airflow_Temperature_Cel 0x0022 060 030 045 Old_age Always
In_the_past 40 (Min/Max 23/70 #25)
194 Temperature_Celsius 0x0022 040 070 000 Old_age Always
- 40 (0 23 0 0 0)
195 Hardware_ECC_Recovered 0x001a 069 055 000 Old_age Always
- 126632051
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
200 Multi_Zone_Error_Rate 0x0000 100 253 000 Old_age Offline
- 0
202 Data_Address_Mark_Errs 0x0032 100 253 000 Old_age Always
- 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 Extended offline Completed without error 00% 37598 -
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.
