On Fri, Feb 18, 2022 at 06:41:52PM +0000, Melanie Plageman (Microsoft) wrote: > Currently a single blk_mq_tag_set is associated with a Scsi_Host. When SCSI > controllers are limited, attaching multiple devices to the same controller is > required. In cloud environments with relatively high latency persistent storage, > requiring all devices on a controller to share a single blk_mq_tag_set > negatively impacts performance. So add more controllers instead of completely breaking the architecture.
