Hello,
I have ZFS running over LUKS encryption. ZFS out of a sudden started showing errors,
$zpool status
pool: tank
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using zpool clear or replace the device with zpool replace.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-9P
scan: scrub repaired 0B in 10:13:00 with 0 errors on Fri Nov 17 01:43:01 2023
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
disk1.eli ONLINE 0 0 0
disk2.eli ONLINE 0 184 4
errors: No known data errors
which also shows up in dmesg,
[76443.247801] zio pool=tank vdev=/dev/mapper/disk1.eli error=5 type=2 offset=2103171743744 size=53248 flags=1074267264
[80861.452444] zio pool=tank vdev=/dev/mapper/disk1.eli error=5 type=2 offset=1841919950848 size=40960 flags=1074267264
[82374.040979] zio pool=tank vdev=/dev/mapper/disk1.eli error=5 type=2 offset=7028176924672 size=4096 flags=1572992
However smart ‘long’ test shows up ok. There doesnt seems to be any sector errors,
# smartctl -a /dev/sdc
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.1.63-1-lts] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Red
Device Model: WDC WD80EFZX-68UW8N0
Firmware Version: 83.H0A83
User Capacity: 8,001,563,222,016 bytes [8.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: In smartctl database 7.3/5528
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Wed Nov 29 21:30:52 2023 IST
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: ( 101) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: (1100) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0005 132 132 054 Pre-fail Offline - 112
3 Spin_Up_Time 0x0007 155 155 024 Pre-fail Always - 473 (Average 376)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 632
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 128 128 020 Pre-fail Offline - 18
9 Power_On_Hours 0x0012 093 093 000 Old_age Always - 49433
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 609
22 Helium_Level 0x0023 100 100 025 Pre-fail Always - 100
192 Power-Off_Retract_Count 0x0032 007 007 000 Old_age Always - 112187
193 Load_Cycle_Count 0x0012 007 007 000 Old_age Always - 112187
194 Temperature_Celsius 0x0002 171 171 000 Old_age Always - 35 (Min/Max 21/49)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 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% 49409 -
# 2 Extended offline Completed without error 00% 49406 -
# 3 Extended offline Completed without error 00% 49405 -
# 4 Short offline Completed without error 00% 49405 -
# 5 Extended offline Completed without error 00% 41597 -
# 6 Extended offline Interrupted (host reset) 20% 41579 -
# 7 Short offline Completed without error 00% 21843 -
# 8 Short offline Completed without error 00% 10193 -
# 9 Extended offline Completed without error 00% 26 -
#10 Extended offline Aborted by host 40% 9 -
#11 Short offline Completed without error 00% 0 -
Does this disk need to be replaced?
The error message tells you what to.
If this is just a random error you are unconcerned by (recent power outage, flakely cables, etc), you can clear the errors. If you believe the drive is failing, you can replace the drive. The array will remain in a degraded state until you make a decision.
I have updated the post with the smart data.