I have a software RAID 1 array on RHEL. I am getting this error emailed to me each morning: Device: /dev/sda [SAT], 1 Currently unreadable (pending) sectors
When I run a test on sda (or sdb) everything appears to pass. Am I missing something?
mdstat shows the RAID array is fine:
# cat /proc/mdstat Personalities : [raid1] md5 : active raid1 sdb5[1] sda5[0] 108026816 blocks [2/2] [UU]md1 : active raid1 sdb1[1] sda1[0] 511936 blocks [2/2] [UU]md2 : active raid1 sda2[0] sdb2[1] 805306304 blocks [2/2] [UU]md3 : active raid1 sda3[0] sdb3[1] 62914496 blocks [2/2] [UU]unused devices: <none>Here is the output of: # smartctl -q noserial -a /dev/sda
I have also tried running: # smartctl -t long /dev/sda
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-279.9.1.el6.x86_64] (local build)Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net=== START OF INFORMATION SECTION ===Model Family: Hitachi Ultrastar A7K1000Device Model: Hitachi HUA721010KLA330Firmware Version: GKAOAB0AUser Capacity: 1,000,204,886,016 bytes [1.00 TB]Sector Size: 512 bytes logical/physicalDevice is: In smartctl database [for details use: -P show]ATA Version is: 7ATA Standard is: ATA/ATAPI-7 T13 1532D revision 1Local Time is: Sun May 21 17:51:42 2017 CDTSMART support is: Available - device has SMART capability.SMART support is: Enabled=== START OF READ SMART DATA SECTION ===SMART overall-health self-assessment test result: PASSEDGeneral SMART Values:Offline data collection status: (0x84) Offline data collection activity was suspended 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: (15354) seconds.Offline data collectioncapabilities: (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 routinerecommended polling time: ( 255) minutes.SCT capabilities: (0x003f) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported.SMART Attributes Data Structure revision number: 16Vendor Specific SMART Attributes with Thresholds:ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000b 098 098 016 Pre-fail Always - 4 2 Throughput_Performance 0x0005 100 100 054 Pre-fail Offline - 0 3 Spin_Up_Time 0x0007 122 122 024 Pre-fail Always - 550 (Average 591) 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 68 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 100 100 020 Pre-fail Offline - 0 9 Power_On_Hours 0x0012 094 094 000 Old_age Always - 43202 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 68192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 751193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 751194 Temperature_Celsius 0x0002 090 090 000 Old_age Always - 66 (Min/Max 17/72)196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 1198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0SMART Error Log Version: 1No Errors LoggedSMART Self-test log structure revision number 1Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error# 1 Short offline Completed without error 00% 43186 -# 2 Extended offline Completed without error 00% 43170 -# 3 Short offline Completed without error 00% 43162 -# 4 Short offline Completed without error 00% 43138 -# 5 Short offline Completed without error 00% 43114 -# 6 Short offline Completed without error 00% 43090 -# 7 Short offline Completed without error 00% 43066 -# 8 Short offline Completed without error 00% 43042 -# 9 Extended offline Completed without error 00% 43031 -#10 Short offline Completed without error 00% 43024 -#11 Short offline Completed without error 00% 43018 -#12 Extended offline Completed without error 00% 43002 -#13 Short offline Completed without error 00% 42994 -#14 Short offline Completed without error 00% 42970 -#15 Short offline Completed without error 00% 42946 -#16 Short offline Completed without error 00% 42922 -#17 Short offline Completed without error 00% 42898 -#18 Short offline Completed without error 00% 42874 -#19 Short offline Completed without error 00% 42850 -#20 Extended offline Completed without error 00% 42833 -#21 Short offline Completed without error 00% 42826 -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_testingSelective 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.