On Tue, Jul 12, 2022 at 11:13:57PM +0300, Sagi Grimberg wrote: > I think the difference from scsi-generic and controller nvme passthru is > that this is a mpath device node (or mpath chardev). This is why I think > that users would expect that it would have equivalent multipath > capabilities (i.e. failover). How is that different from /dev/sg? > In general, I think that uring passthru as an alternative I/O interface > and as such needs to be able to failover. If this is not expected from > the interface, then why are we exposing a chardev for the mpath device > node? why not only the bottom namespaces? The failover will happen when you retry, but we leave that retry to userspace. There even is the uevent to tell userspace when a new path is up.
