For LUNs between 0 and 255 peripheral addressing is used. For LUNs higher than 255 the LUN addressing should switch to flat according to the specification. Instead of printing out the LUN number without regard to the shifting of address method, display the LUN as it was intended to be the user connecting the LUN. The current display leaves a non-obvious 16384 offset. In short, a LUN connected as 258 will show up in multipath output as 16642. Instead display it as the expected 258. This is for display only and doesn’t change the actual contents of the LUN variable. Signed-off-by: Brian Bunker <brian@xxxxxxxxxxxxxxx> ___ --- a/libmultipath/print.c 2020-09-24 13:52:18.661828011 -0600 +++ b/libmultipath/print.c 2020-09-24 14:28:27.603542303 -0600 @@ -394,7 +394,7 @@ pp->sg_id.host_no, pp->sg_id.channel, pp->sg_id.scsi_id, - pp->sg_id.lun); + (pp->sg_id.lun & 0x4000) ? pp->sg_id.lun - 0x4000 : pp->sg_id.lun); } static int Brian Bunker SW Eng brian@xxxxxxxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel