Re: [dm-devel] [PATCH v4 00/10] Add Copy offload support

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On 2022/05/02 21:14, Damien Le Moal wrote:
> On 2022/04/27 21:49, Nitesh Shetty wrote:
>> O Wed, Apr 27, 2022 at 11:19:48AM +0900, Damien Le Moal wrote:
>>> On 4/26/22 19:12, Nitesh Shetty wrote:
>>>> The patch series covers the points discussed in November 2021 virtual call
>>>> [LSF/MM/BFP TOPIC] Storage: Copy Offload[0].
>>>> We have covered the Initial agreed requirements in this patchset.
>>>> Patchset borrows Mikulas's token based approach for 2 bdev
>>>> implementation.
>>>>
>>>> Overall series supports –
>>>>
>>>> 1. Driver
>>>> - NVMe Copy command (single NS), including support in nvme-target (for
>>>>     block and file backend)
>>>
>>> It would also be nice to have copy offload emulation in null_blk for testing.
>>>
>>
>> We can plan this in next phase of copy support, once this series settles down.
> 
> Why ? How do you expect people to test simply without null_blk ? Sutre, you said
> QEMU can be used. But if copy offload is not upstream for QEMU either, there is
> no easy way to test.
> 
> Adding that support to null_blk would not be hard at all.

Sorry. Replied again to an email I already replied to. vger keep sending me
multiple copies of the same emails...

-- 
Damien Le Moal
Western Digital Research




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