>Use write long command to "destroy" sectors. Then try to read them. That will
>generate uncorrectable read errors.

There is a misunderstanding here, the condition that triggers this error
handler is when the device is slow or unresponsive, or fails to start;
bad blocks refer to data errors rather than faults.

On 9/2/25 3:03 PM, JiangJianJun wrote:
>> Use write long command to "destroy" sectors. Then try to read them. That will
>> generate uncorrectable read errors.
> 
> There is a misunderstanding here, the condition that triggers this error
> handler is when the device is slow or unresponsive, or fails to start;
> bad blocks refer to data errors rather than faults.

You probably easilly can simulate an unresponsive device using either qemu or
tcmu-runner.


-- 
Damien Le Moal
Western Digital Research