A NVME command always generates some additional commands?

[Angelo Brito]

Thanks Keith!

I just needed a confirmation that it was an expected behavior!


Regards,
Angelo Silva Brito.
Graduate in Engenharia da Computação - UFPE
http://about.me/angelobrito
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On Mon, Jun 2, 2014 at 5:08 PM, Keith Busch <keith.busch at intel.com> wrote:
> On Mon, 2 Jun 2014, Angelo Brito wrote:
>>
>> We are developing a NVMe device and your device is under tests right
>> now. So we are monitoring what is requested, what is executed and what
>> are the answers. Then every time we request a NVMe I/O Command some
>> additional 23 I/O Read Commands are generated to read some blocks next
>> to the end of our memory or next to the start. Is it an expected
>> behavior? I didn't find a reason at the driver for these commands to
>> be generated.
>
>
> Reads are generated everytime you close a block device opened for writing.