On 10/11/2014 17:05, Christoph Hellwig wrote: > > a) there is no multiath support for it, and we simply can't break existing > setups that use. > b) there is no support for I/O schedulers at all. This might be okay > for virtio-scsi, where in general you have a host scheduler, but for > real hardware that still has to deal with more spinning rust than > solid state it's a blocker. Fortuntely Jens is working on that one. It is sort-of okay for virtio-scsi (and virtio-blk). Deadline provides a good speedup over noop for virtual disks, even in the presence of a host scheduler---though nobody ever benchmarked why. Paolo -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
