[PATCH v15 09/12] dm: Add support for copy offload
Hannes Reinecke
hare at suse.de
Thu Sep 7 23:13:37 PDT 2023
On 9/6/23 18:38, Nitesh Shetty wrote:
> Before enabling copy for dm target, check if underlying devices and
> dm target support copy. Avoid split happening inside dm target.
> Fail early if the request needs split, currently splitting copy
> request is not supported.
>
And here is where I would have expected the emulation to take place;
didn't you have it in one of the earlier iterations?
After all, device-mapper already has the infrastructure for copying
data between devices, so adding a copy-offload emulation for
device-mapper should be trivial.
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
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