[smartmontools-support] nvme 'Data Units Read' and 'Data Units Written' question.

[Robert Fantini]

Got it, thanks!
And I will never question smartctl math again!

On Sun, Jun 30, 2019 at 3:29 PM Christian Franke <
Christian.Franke at t-online.de> wrote:

> Robert Fantini wrote:
> > attached.
> > ...
> [NVMe call: opcode=0x02, size=0x0200, nsid=0xffffffff, cdw10=0x007f0002]
> [NVMe call succeeded: result=0x00000000
> ...
> 20     51 82 3d fe 06 00 00 00  00 00 00 00 00 00 00 00
> 128-bit LE encoding of 0x6fe3d8251= 30035247697
>
> 30     85 4b 3e c7 02 00 00 00  00 00 00 00 00 00 00 00
> Same for Data Units Written.
> ...
> Data Units Read:                    30,035,247,697 [15.3 PB]
> Data Units Written:                 11,932,683,141 [6.10 PB]
>
>
> Smartctl prints the counters as reported by the device.
>
> ...
> Power Cycles:                       9
> Power On Hours:                     11,527
>
> Assuming these numbers are all correct, this drive has been used for ~16
> month with an average I/O rate of ~500 MiB/second
>
> $ echo
> 'scale=1;((30035247697+11932683141)*512*1000)/11527/3600/1024/1024' | bc
> 493.8
>
> Regards,
> Christian
>
>
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