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
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