On 09/25/2017 03:50 PM, Christoph Hellwig wrote: > On Mon, Sep 25, 2017 at 03:47:43PM +0200, Hannes Reinecke wrote: >> Can't we make the multipath support invisible to the host? >> IE check the shared namespaces before creating the device node, and just >> move them under the existing namespaces if one exists? > > That was what my first version did, but various people talked me > out of it. Unfortunately just multiplexing breaks a few things, > including the userspace passthrough ioctls. > Care to give some specifics? How would userspace passthrough be affected? I would've thought that we're sending the ioctl down one path, and we'd be getting the completion back on the same path/queue/whatever. (Unless we're talking multi-command ioctls, but those are evil anyway) Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@xxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg)
