On Tue, 2018-07-24 at 08:00 +0200, Hannes Reinecke wrote:
> So, have you tested that request-based multipathing works on a partition 
> _at all_? I'm not sure if partition mapping is done correctly here; we 
> never remap the start of the request (nor bio, come to speak of it), so 
> it looks as if we would be doing the wrong things here.
> 
> Have you checked that partition remapping is done correctly?

I think generic_make_request() takes care of partition remapping by calling
blk_partition_remap(). generic_make_request() is called by submit_bio(). Is
that sufficient to cover all dm drivers?

Bart.

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