I just ordered a new server with a 1TB Samsung SSD. Installed Ubuntu 14.04.5 LTS.
After booting into the newly installed system, I see this in my dmesg and /var/lib/syslog. Output of grep error /var/log/syslog:
May 12 03:47:34 lf5 kernel: [ 0.373789] HEST: Enabling Firmware First mode for corrected errors.
May 12 03:47:34 lf5 kernel: [ 10.382147] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 03:47:34 lf5 kernel: [ 10.382152] res 40/00:e0:f8:69:70/00:00:74:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:47:34 lf5 kernel: [ 10.712517] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 03:47:34 lf5 kernel: [ 10.712521] res 40/00:d0:38:01:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:47:34 lf5 kernel: [ 11.119541] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 03:47:34 lf5 kernel: [ 11.119545] res 40/00:40:30:03:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:47:34 lf5 kernel: [ 11.526336] ata8.00: irq_stat 0x08000008, interface fatal error
May 12 03:47:34 lf5 kernel: [ 11.526341] res 40/00:60:40:01:7c/00:00:5f:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:47:34 lf5 kernel: [ 11.526345] res 40/00:60:40:01:7c/00:00:5f:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:47:34 lf5 kernel: [ 11.526348] res 40/00:60:40:01:7c/00:00:5f:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:47:34 lf5 kernel: [ 11.526351] res 40/00:60:40:01:7c/00:00:5f:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:47:34 lf5 kernel: [ 21.349950] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
May 12 03:51:10 lf5 kernel: [ 0.389787] HEST: Enabling Firmware First mode for corrected errors.
May 12 03:51:10 lf5 kernel: [ 10.906423] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 03:51:10 lf5 kernel: [ 10.906429] res 40/00:80:08:00:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:51:10 lf5 kernel: [ 11.488276] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 03:51:10 lf5 kernel: [ 11.488281] res 40/00:c0:28:01:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:51:10 lf5 kernel: [ 11.960792] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 03:51:10 lf5 kernel: [ 11.960796] res 40/00:b8:b0:01:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:51:10 lf5 kernel: [ 12.366482] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 03:51:10 lf5 kernel: [ 12.366486] res 40/00:60:e0:03:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 03:51:10 lf5 kernel: [ 20.918620] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
May 12 17:07:19 lf5 kernel: [ 0.390011] HEST: Enabling Firmware First mode for corrected errors.
May 12 17:07:19 lf5 kernel: [ 10.349119] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 17:07:19 lf5 kernel: [ 10.349124] res 40/00:88:a8:6d:70/00:00:74:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:07:19 lf5 kernel: [ 10.738449] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 17:07:19 lf5 kernel: [ 10.738453] res 40/00:20:60:6b:70/00:00:74:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:07:19 lf5 kernel: [ 11.072972] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 17:07:19 lf5 kernel: [ 11.072976] res 40/00:60:50:03:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:07:19 lf5 kernel: [ 11.471777] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 17:07:19 lf5 kernel: [ 11.471781] res 40/00:48:c8:03:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:07:19 lf5 kernel: [ 20.651217] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
May 12 17:18:16 lf5 kernel: [ 0.389808] HEST: Enabling Firmware First mode for corrected errors.
May 12 17:18:17 lf5 kernel: [ 10.762352] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 17:18:17 lf5 kernel: [ 10.762360] res 40/00:40:08:03:00/00:00:00:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 11.338565] res 40/00:b8:20:01:7c/00:00:5f:00:00/40 Emask 0x1 (device error)
May 12 17:18:17 lf5 kernel: [ 11.338569] res 40/00:b8:20:01:7c/00:00:5f:00:00/40 Emask 0x1 (device error)
May 12 17:18:17 lf5 kernel: [ 11.338572] res 40/00:b8:20:01:7c/00:00:5f:00:00/40 Emask 0x1 (device error)
May 12 17:18:17 lf5 kernel: [ 11.338576] res 40/00:b8:20:01:7c/00:00:5f:00:00/40 Emask 0x1 (device error)
May 12 17:18:17 lf5 kernel: [ 20.087229] res 41/84:08:b8:14:7d/00:00:63:00:00/00 Emask 0x410 (ATA bus error) <F>
May 12 17:18:17 lf5 kernel: [ 20.298295] ata8.00: error: { ICRC ABRT }
May 12 17:18:17 lf5 kernel: [ 21.176551] sd 7:0:0:0: [sda] tag#0 Add. Sense: Scsi parity error
May 12 17:18:17 lf5 kernel: [ 21.316632] blk_update_request: I/O error, dev sda, sector 1669074520
May 12 17:18:17 lf5 kernel: [ 21.542013] ata8.00: irq_stat 0x08000000, interface fatal error
May 12 17:18:17 lf5 kernel: [ 21.759477] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 22.052681] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 22.347138] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 22.642363] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 22.938868] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 23.239764] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 23.542336] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 23.840288] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 24.138769] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 24.439063] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 24.740494] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 25.047057] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 25.354884] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 25.662079] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 25.967498] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 26.273208] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 26.579035] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 26.884890] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 27.190868] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 27.496523] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 27.801825] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 28.106876] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 28.412223] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 28.717662] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 29.022620] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 29.326675] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 29.629826] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 29.932271] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 30.234666] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 30.537024] res 40/00:e8:78:02:7c/00:00:63:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 31.765128] blk_update_request: I/O error, dev sda, sector 1669071496
May 12 17:18:17 lf5 kernel: [ 32.143969] blk_update_request: I/O error, dev sda, sector 1669071504
May 12 17:18:17 lf5 kernel: [ 32.527171] blk_update_request: I/O error, dev sda, sector 1669071512
May 12 17:18:17 lf5 kernel: [ 32.915371] blk_update_request: I/O error, dev sda, sector 1669071544
May 12 17:18:17 lf5 kernel: [ 33.308218] blk_update_request: I/O error, dev sda, sector 1669071552
May 12 17:18:17 lf5 kernel: [ 33.706503] blk_update_request: I/O error, dev sda, sector 1669071520
May 12 17:18:17 lf5 kernel: [ 34.108892] blk_update_request: I/O error, dev sda, sector 1669071528
May 12 17:18:17 lf5 kernel: [ 34.516541] blk_update_request: I/O error, dev sda, sector 1669071536
May 12 17:18:17 lf5 kernel: [ 34.929267] blk_update_request: I/O error, dev sda, sector 1669071368
May 12 17:18:17 lf5 kernel: [ 35.347838] blk_update_request: I/O error, dev sda, sector 1669071376
May 12 17:18:17 lf5 kernel: [ 36.004437] res 41/04:a8:90:d2:89/00:00:5f:00:00/00 Emask 0x401 (device error) <F>
May 12 17:18:17 lf5 kernel: [ 36.257143] ata8.00: error: { ABRT }
May 12 17:18:17 lf5 kernel: [ 37.681581] ata8.00: irq_stat 0x08000008, interface fatal error
May 12 17:18:17 lf5 kernel: [ 37.681586] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681590] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681593] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681596] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681599] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681602] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681605] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681608] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681611] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681615] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681618] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681621] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681624] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681627] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681630] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681633] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681636] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681639] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681642] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681645] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681649] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681652] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 37.681655] res 40/00:b8:e0:04:bc/00:00:70:00:00/40 Emask 0x52 (ATA bus error)
May 12 17:18:17 lf5 kernel: [ 38.005003] blk_update_request: I/O error, dev sda, sector 1891370112
May 12 17:18:17 lf5 kernel: [ 38.005009] blk_update_request: I/O error, dev sda, sector 1891370120
May 12 17:18:17 lf5 kernel: [ 38.005013] blk_update_request: I/O error, dev sda, sector 1891370128
May 12 17:18:17 lf5 kernel: [ 38.005017] blk_update_request: I/O error, dev sda, sector 1891370136
May 12 17:18:17 lf5 kernel: [ 38.005021] blk_update_request: I/O error, dev sda, sector 1891370144
May 12 17:18:17 lf5 kernel: [ 38.005025] blk_update_request: I/O error, dev sda, sector 1891370152
May 12 17:18:17 lf5 kernel: [ 38.005029] blk_update_request: I/O error, dev sda, sector 1891370160
May 12 17:18:17 lf5 kernel: [ 38.005032] blk_update_request: I/O error, dev sda, sector 1891370168
May 12 17:18:17 lf5 kernel: [ 38.005036] blk_update_request: I/O error, dev sda, sector 1891370176
May 12 17:18:17 lf5 kernel: [ 38.005040] blk_update_request: I/O error, dev sda, sector 1891370184
May 12 17:18:17 lf5 kernel: [ 49.093973] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
I am mostly concerned about these entries: blk_update_request: I/O error, dev sda, sector xxxxxxxxxxx
I ran badblocks -v /dev/sda which returned no errors.
I then ran smartctl --all /dev/sda, which also returned no errors. See output below. This one includes a short self test
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-4.4.0-31-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: Samsung SSD 850 EVO 1TB
Serial Number: S3PHNF0JC00710K
LU WWN Device Id: 5 002538 d428254a0
Firmware Version: EMT03B6Q
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4c
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Sat May 12 19:08:22 2018 MST
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: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 249) Self-test routine in progress...
90% of test remaining.
Total time to complete Offline
data collection: ( 0) seconds.
Offline data collection
capabilities: (0x53) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
No 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: ( 512) 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: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0
9 Power_On_Hours 0x0032 099 099 000 Old_age Always - 8
12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 31
177 Wear_Leveling_Count 0x0013 100 100 000 Pre-fail Always - 0
179 Used_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail Always - 0
181 Program_Fail_Cnt_Total 0x0032 100 100 010 Old_age Always - 0
182 Erase_Fail_Count_Total 0x0032 100 100 010 Old_age Always - 0
183 Runtime_Bad_Block 0x0013 100 099 010 Pre-fail Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0032 069 067 000 Old_age Always - 31
195 Hardware_ECC_Recovered 0x001a 200 200 000 Old_age Always - 0
199 UDMA_CRC_Error_Count 0x003e 099 099 000 Old_age Always - 20
235 Unknown_Attribute 0x0012 099 099 000 Old_age Always - 25
241 Total_LBAs_Written 0x0032 099 099 000 Old_age Always - 55078112
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 Short offline Completed without error 00% 8 -
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
255 116055040 116120575 Read_scanning was never started
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.
My question is simple: What do you think might be wrong? The SSD should be brand new. It's hard for me, in good conscience, to put this server into production with those errors in the logs. And the box is otherwise acting normal.
The errors that you see are interface errors, they are not coming from the disk itself but rather from the connection to it. It can be the cable or any of the ports in the connection.
Since the CRC errors on the drive do not increase I can only assume that the problem is on the receive side of the machine you use. You should check the cable and try a different SATA port on the server.
Addendum:
What I looked at specifically is the error messages from the kernel "ATA bus error", these indicate a communication error rather than an error from the drive itself.
I also looked at the UDMA_CRC_Error_Count counter which is the CRC errors on the drive side, since these are fairly low (only 20, usually happens upon startup or hot-plug) I came to the conclusion the issue is on the receive side of the server, so the drive itself is not likely to be the issue.
In any case, replacing the cable (assuming there is one) is the cheapest way to handle this case. Replacing the drive or the board which is connected to from the computer side (usually motherboard but can be a midplane as well) is usually more cumbersome and more expensive.