On Wed, Jul 13, 2022 at 11:04:31AM +0300, Sagi Grimberg wrote: > Maybe the solution is to just not expose a /dev/ng for the mpath device > node, but only for bottom namespaces. Then it would be completely > equivalent to scsi-generic devices. > > It just creates an unexpected mix of semantics of best-effort > multipathing with just path selection, but no requeue/failover... Which is exactly the same semanics as SG_IO on the dm-mpath nodes. > If the user needs to do the retry, discover and understand namespace > paths, ANA states, controller states, etc. Why does the user need a > mpath chardev at all? The user needs to do that for all kinds of other resons anyway, as we don't do any retries for passthrough at all.
