[smartmontools-support] Reading NVME logs

[Thane K. Sherrington]

Hi all,
     Looking at NVME logs, I find them hard to understand.

Take the following logs (questions inline).

smartctl pre-7.4 2022-07-17 r5397 [i686-w64-mingw32-w11-21H2(64)] (CircleCI)
Copyright (C) 2002-22, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Number:                       KINGSTON OM8PCP3512F-AB
Serial Number:                      50026B7683A06967
Firmware Version:                   ECFK52.3
PCI Vendor/Subsystem ID:            0x2646
IEEE OUI Identifier:                0x0026b7
Total NVM Capacity:                 512,110,190,592 [512 GB]
Unallocated NVM Capacity:           0
Controller ID:                      1
NVMe Version:                       1.3
Number of Namespaces:               1
Namespace 1 Size/Capacity:          512,110,190,592 [512 GB]
Namespace 1 Formatted LBA Size:     512
Namespace 1 IEEE EUI-64:            0026b7 683a069675
Local Time is:                      Tue Dec 20 16:34:31 2022 AST
Firmware Updates (0x12):            1 Slot, no Reset required
Optional Admin Commands (0x0017):   Security Format Frmw_DL Self_Test
Optional NVM Commands (0x0054):     DS_Mngmt Sav/Sel_Feat Timestmp
Log Page Attributes (0x0a):         Cmd_Eff_Lg Telmtry_Lg
Maximum Data Transfer Size:         512 Pages
Warning  Comp. Temp. Threshold:     85 Celsius
Critical Comp. Temp. Threshold:     90 Celsius

Supported Power States
St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
  0 +     5.74W       -        -    0  0  0  0        0       0
  1 +     5.21W       -        -    1  1  1  1        0       0
  2 +     4.95W       -        -    2  2  2  2        0       0
  3 -   0.0490W       -        -    3  3  3  3     2000    2000
  4 -   0.0018W       -        -    4  4  4  4    25000   25000

Supported LBA Sizes (NSID 0x1)
Id Fmt  Data  Metadt  Rel_Perf
  0 +     512       0         2
  1 -    4096       0         1

=== START OF SMART DATA SECTION ===
**>>>>>>>>>>>>> *SMART overall-health self-assessment test result: 
PASSED - I assume this is good, but a perfect indicator, since I've seen 
regular drives say the passed SMART but had read errors.*

SMART/Health Information (NVMe Log 0x02)
Critical Warning:                   0x00
*>>>>>>>>>>>>> Temperature:                        79 Celsius - This 
seems high - is that a problem?*
**>>>>>>>>>>>>> *Available Spare:                    100% - This looks 
like 100% of the spare is free.  I assume that's a good sign?*
Available Spare Threshold:          10%
**>>>>>>>>>>>>> *Percentage Used:                    16% - Does this 
mean that 16% of the drive is used, or 16% of the spare space is used? *
Data Units Read:                    45,485,417 [23.2 TB]
Data Units Written:                 36,626,206 [18.7 TB]
Host Read Commands:                 488,277,240
Host Write Commands:                784,953,321
Controller Busy Time:               4,173
Power Cycles:                       15,088
Power On Hours:                     12,206
*>>>>>>>>>>>>> **Unsafe Shutdowns:                   703 - Do unsafe 
shutdowns matter? *
Media and Data Integrity Errors:    0
*>>>>>>>>>>>>> **Error Information Log Entries:      3,470 -  Is this a 
bad thing?*
Warning  Comp. Temperature Time:    0
Critical Comp. Temperature Time:    0
Thermal Temp. 1 Transition Count:   96
Thermal Temp. 1 Total Time:         2782

Error Information (NVMe Log 0x01, 16 of 63 entries)
**>>>>>>>>>>>>> *No Errors Logged - If there are 3470 log entries, why 
are no errors logged?*


Any advice would be appreciated.

Thanks,
-- 
Thane K. Sherrington

Computer Connection, Ltd. ...taking the mystery out of computers since 1982.
Winner of the 2012 Ian Spencer - Excellence in Business Award
*Thanks for making us the Reader's Choice Best Computer Store in 2016, 
2017, 2018 and 2019!*
95 College St., Antigonish,
NS B2G 1X6
902-863-3361 (phone)
902-863-2580 (fax)
thane at computerconnectionltd.com
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