[smartmontools-support] Write amplification using NVMe Endurance Group Log (Log Identifier 09h)

[James]

I do not know where it would be displayed.

Is "Data Units Read: " not good?


On 2023-02-05 11:52, Franc Zabkar wrote:
> Thanks.
>
> Does this mean that this device doesn't support this feature, or does 
> it mean that smartctl doesn't support it? I know that an SK Hynix 
> BC711 SSD doesn't support it, so this feature appears to be optional.
>
>
> On 5/02/2023 7:48 am, James wrote:
>>
>> On 2023-02-04 12:40, Franc Zabkar wrote:
>>> Could someone tell me whether GSmartControl (Windows) or smartctl 
>>> (Linux) or any other SMART tool reports the Endurance Group Log (Log 
>>> Identifier 09h) for NVMe SSDs? I don't have an NVMe SSD to enable me 
>>> to perform this check.
>>
>>
>> $ sudo smartctl -a /dev/nvme0n1p1
>> smartctl 7.3 2022-02-28 r5338 [x86_64-linux-5.19.0-29-generic] (local 
>> build)
>> Copyright (C) 2002-22, Bruce Allen, Christian Franke, 
>> www.smartmontools.org
>>
>> === START OF INFORMATION SECTION ===
>> Model Number:                       KINGSTON RBUSNS8154P3128GJ1
>> Serial Number:                      50026B7684581795
>> Firmware Version:                   E8FK12.3
>> PCI Vendor/Subsystem ID:            0x2646
>> IEEE OUI Identifier:                0x0026b7
>> Total NVM Capacity:                 128,035,676,160 [128 GB]
>> Unallocated NVM Capacity:           0
>> Controller ID:                      0
>> NVMe Version:                       1.2
>> Number of Namespaces:               1
>> Namespace 1 Size/Capacity:          128,035,676,160 [128 GB]
>> Namespace 1 Formatted LBA Size:     512
>> Namespace 1 IEEE EUI-64:            0026b7 6845817955
>> Local Time is:                      Sat Feb  4 15:46:02 2023 EST
>> Firmware Updates (0x12):            1 Slot, no Reset required
>> Optional Admin Commands (0x0007):   Security Format Frmw_DL
>> Optional NVM Commands (0x001e):     Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat
>> Log Page Attributes (0x04):         Ext_Get_Lg
>> Maximum Data Transfer Size:         512 Pages
>> Warning  Comp. Temp. Threshold:     84 Celsius
>> Critical Comp. Temp. Threshold:     88 Celsius
>>
>> Supported Power States
>> St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
>>   0 +     7.90W  0.0790W       -    0  0  0  0      600     600
>>   1 +     7.90W  0.0790W       -    0  0  0  0      600     600
>>   2 +     7.90W  0.0790W       -    0  0  0  0      600     600
>>   3 -   0.1000W  0.0790W       -    3  3  3  3     1000    1000
>>   4 -   0.0050W  0.0790W       -    4  4  4  4   400000   90000
>>
>> Supported LBA Sizes (NSID 0x1)
>> Id Fmt  Data  Metadt  Rel_Perf
>>   0 +     512       0         1
>>   1 -    4096       0         0
>>
>> === START OF SMART DATA SECTION ===
>> SMART overall-health self-assessment test result: PASSED
>>
>> SMART/Health Information (NVMe Log 0x02)
>> Critical Warning: 0x00
>> Temperature:                        22 Celsius
>> Available Spare:                    100%
>> Available Spare Threshold:          100%
>> Percentage Used:                    2%
>> Data Units Read:                    2,414,862 [1.23 TB]
>> Data Units Written:                 1,859,520 [952 GB]
>> Host Read Commands:                 27,830,700
>> Host Write Commands:                30,123,471
>> Controller Busy Time:               39
>> Power Cycles:                       515
>> Power On Hours:                     114
>> Unsafe Shutdowns:                   12
>> Media and Data Integrity Errors:    0
>> Error Information Log Entries:      700
>> Warning  Comp. Temperature Time:    0
>> Critical Comp. Temperature Time:    0
>> Temperature Sensor 2:               22 Celsius
>>
>> Error Information (NVMe Log 0x01, 16 of 16 entries)
>> Num   ErrCount  SQId   CmdId  Status  PELoc          LBA  NSID VS
>>    0        700     0  0x0016  0x0005      -            6     0 -
>>    1        699     0  0x0015  0x0005      -           12     0 -
>>    2        698     0  0x000b  0x0004      -   4009754624     1 -
>>    3        697     0  0x000b  0x0004      -   4009754624     1 -
>>    4        696     0  0x000b  0x0004      -   4009754624     1 -
>>    5        695     0  0x000b  0x0004      -   4009754624     1 -
>>    6        694     0  0x000b  0x0004      -   4009754624     1 -
>>    7        693     0  0x000b  0x0004      -   4009754624     1 -
>>    8        692     0  0x000b  0x0004      -   4009754624     1 -
>>    9        691     0  0x000b  0x0004      -   4009754624     1 -
>>   10        690     0  0x000b  0x0004      -   4009754624     1 -
>>   11        689     0  0x000b  0x0004      -   4009754624     1 -
>>   12        688     0  0x000b  0x0004      -   4009754624     1 -
>>   13        687     0  0x000b  0x0004      -   4009754624     1 -
>>   14        686     0  0x000b  0x0004      -   4009754624     1 -
>>   15        685     0  0x000b  0x0004      -   4009754624     1 -
>>
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