Re: [PATCH v4] libata: Add ATA_HORKAGE_NO_NCQ_ON_AMD for Samsung 860 and 870 SSD.

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> Martin K. Petersen <martin.petersen@xxxxxxxxxx> hat am 01.09.2021 20:58 geschrieben:
> 
>  
> Tor,
> 
> > Samsung 860 Pro:
> > $ cat /sys/block/sda/device/queue_depth
> >
> > 32
> >
> > Samsung 860 Evo:
> > $ cat /sys/block/sdb/device/queue_depth
> >
> > 32
> 
> Please also provide the output of:
> 
> # grep . /sys/class/ata_device/dev*/trim

  /sys/class/ata_device/dev1.0/trim:unsupported
  /sys/class/ata_device/dev2.0/trim:unsupported
  /sys/class/ata_device/dev3.0/trim:queued
  /sys/class/ata_device/dev4.0/trim:queued
  /sys/class/ata_device/dev5.0/trim:unsupported

According to the symlinks in /dev/disk/by-path,
3.0 corresponds to /dev/sda (860 Pro) and
4.0 corresponds to /dev/sdb (860 Evo).

> 
> -- 
> Martin K. Petersen	Oracle Linux Engineering



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