On Fri, 2018-03-23 at 14:37 +0100, Johannes Thumshirn wrote: > Currently scsi_dh_lookup() doesn't check for NULL as a device > name. This combined with nvme over dm-mapth results in the following > messages emitted by device-mapper: > > device-mapper: multipath: Could not failover device 259:67: Handler scsi_dh_(null) error 14. > > Let scsi_dh_lookup() fail fast on NULL names. Reviewed-by: Bart Van Assche <bart.vanassche@xxxxxxx>