Gopal,

On 2/8/21 21:06, Gopal Tiwari wrote:

For SK Hynix PE8000 WriteZerocommands exceed typical I/O MDTS
(Maximum Data Transfer Size) supported by the hardware. Which
intern fail and generate following erros :

nvme nvme0: I/O 0 QID 96 timeout, aborting
nvme nvme0: Abort status: 0x371
nvme nvme0: Shutdown timeout set to 15 seconds
nvme nvme0: 128/0/0 default/read/poll queues
nvme nvme0: I/O 0 QID 96 timeout, disable controller
nvme nvme0: I/O 0 QID 0 timeout, disable controller
nvme nvme0: Device shutdown incomplete; abort shutdown
nvme nvme0: failed to mark controller live state
nvme nvme0: Removing after probe failure status: -19

Firmware unable to complete any outstanding commands
due to lack of resources, therefore placing NVMe drive
in a condition that is unable to further process WriteZerocommands.

fixing by disabling Write zeroes.

Please consider following commit log, can be used at the time applying the
patch:-

For SK Hynix PE8000 NVMe Write Zeroes Command exceed typical I/O MDTS
(Maximum Data Transfer Size) supported by the hardware. That intern
fail and generate following errors :

nvme nvme0: I/O 0 QID 96 timeout, aborting
nvme nvme0: Abort status: 0x371
nvme nvme0: Shutdown timeout set to 15 seconds
nvme nvme0: 128/0/0 default/read/poll queues
nvme nvme0: I/O 0 QID 96 timeout, disable controller
nvme nvme0: I/O 0 QID 0 timeout, disable controller
nvme nvme0: Device shutdown incomplete; abort shutdown
nvme nvme0: failed to mark controller live state
nvme nvme0: Removing after probe failure status: -19

Firmware is unable to complete any outstanding commands due to lack of
resources, therefore placing NVMe drive in a condition that is unable to
further process write-zeores
command.                                                                 

Add NVME_QUIRK_DISABLE_WRITE_ZEROES quirk for SK Hynix PE8000 that fixes
the problem.


With the modified commit log, looks good.

Reviewed-by: Chaitanya Kulkarni <redacted>


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