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

Tor Vic
2021-09-01T17:57:19Z

On 01.09.21 08:13, Damien Le Moal wrote:
> On 2021/09/01 16:38, torvic9@mailbox.org wrote:
>> (Sorry for not doing a proper reply)
>>
>> Hello,
>> Noob here.
>> I have a Samsung 860 Pro connected to a AMD X570 chipset mainboard and
>> it just works flawlessly on 5.13 and 5.14.
>> Are you sure that *every* 860/870 is concerned by this problem on
>> *every* AMD controller? Isn't this too restrictive?
>> Or am I simply missing something?
>
> Is you drive being initialized with NCQ enabled ?
>
> cat /sys/block/sdX/device/queue_depth ?

Samsung 860 Pro:
$ cat /sys/block/sda/device/queue_depth

32

Samsung 860 Evo:
$ cat /sys/block/sdb/device/queue_depth

32

>
>>
>> Thanks,
>> Tor
>>
>
>