You can update an existing path by issuing the UPDATE PATH command.
Update the path to change the device name for a SCSI library named SCSILIB:
update path server1 scsilib srctype=server desttype=library device=/dev/lb1
update path server1 scsilib srctype=server desttype=library device=/dev/library1
update path server1 scsilib srctype=server desttype=library
device=/dev/tsmscsi/lb1
update path server1 scsilib srctype=server desttype=library device=/dev/rmt/1lb
Update the path to change the device name for a drive named NASDRV1:
update path nas1 nasdrv1 srctype=datamover desttype=drive
library=naslib device=/dev/mt1
update path nas1 nasdrv1 srctype=datamover desttype=drive
library=naslib device=/dev/tsmtape1
update path nas1 nasdrv1 srctype=datamover desttype=drive
library=naslib device=/dev/tsmscsi/mt1
update path nas1 nasdrv1 srctype=datamover desttype=drive
library=naslib device=/dev/rmt/1mt