Re: [PATCH] nvme/pci: Use Discard instead of Write Zeroes on SK hynix SC300

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On 04/17/2020 01:37 AM, Kai-Heng Feng wrote:
> After commit 6e02318eaea5 ("nvme: add support for the Write Zeroes
> command"), SK hynix SC300 becomes very slow with the following error
> message:
> [  224.567695] blk_update_request: operation not supported error, dev nvme1n1, sector 499384320 op 0x9:(WRITE_ZEROES) flags 0x1000000 phys_seg 0 prio class 0]
>
> Use quirk NVME_QUIRK_DEALLOCATE_ZEROES to workaround this issue.
Can you share
nvme id-ctrl -H /dev/nvme0 | grep oncs -A 8
output?





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