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Re: [dm-devel] Latest dm-userspace kernel code

FT> I thought that dm-userpsace supports a feature to map a single
FT> request to multiple devices for kinda raid. For that, I guess that
FT> struct dmu_msg_map_response includes several sets of dst_maj and
FT> dst_min. Or you might use 'linked' dmu_msg_map_response, which
FT> enables a user-space daemon to send multiple dmu_msg_map_responses
FT> for one dmu_msg_map_request (if a dmu_msg_map_response is marked
FT> 'linked', dm-userspace module clones the bio and does not free
FT> struct the dmu_request).

Hmm, I had not planned to implement this kind of behavior, but I can
see the benefit.  I think it would be best to focus on performance for
now and add that capability later.

Dan Smith
IBM Linux Technology Center
Open Hypervisor Team
email: danms us ibm com

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