Big delay but probably it is still actual. I check the dual path using the following:
after lin_tape configuratiin you can see the similar output: Changer output: # cat /proc/scsi/IBM* lin_tape version: 3.0.6 lin_tape major number: 242 Attached Changer Devices: Number model SN HBA SCSI FO Path 0 03584L32 0000000000000000 qla2xxx 3:0:0:1 Primary 1 03584L32 0000000000000000 qla2xxx 4:0:0:1 Alternate 2 03584L32 0000000000000000 qla2xxx 4:0:3:1 Alternate 3 03584L32 0000000000000000 qla2xxx 4:0:2:1 Alternate Drives output: lin_tape version: 3.0.6 lin_tape major number: 242 Attached Tape Devices: Number model SN HBA SCSI FO Path 0 ULT3580-TD6 0000000001 qla2xxx 3:0:0:0 Primary 1 ULT3580-TD6 0000000002 qla2xxx 4:0:0:0 Alternate 2 ULT3580-TD6 0000000003 qla2xxx 3:0:1:0 Primary 3 ULT3580-TD6 0000000004 qla2xxx 4:0:1:0 Alternate Device name after persistant name configuration done: [root@rack17s2 atape]# ls -la /dev/tape/* lrwxrwxrwx. 1 root root 11 XXX XX 00:14 /dev/tape/rmt_0000000001 -> ../IBMtape4 lrwxrwxrwx. 1 root root 11 XXX XX 00:14 /dev/tape/rmt_0000000003 -> ../IBMtape7 lrwxrwxrwx. 1 root root 14 XXX XX 00:14 /dev/tape/smc0 -> ../IBMchanger0 If you run ITDT you can check and confirm that dual path is configured and probably working: # ./itdt -f /dev/tape/rmt_0000000001 qrypath Querying SCSI paths... Total paths configured........... 2 Primary Path Number 1 Logical Device................. IBMtape4 Host Bus Adapter............... qla2xxx SCSI Host ID................... 3 SCSI Channel................... 0 Target ID...................... 0 Logical Unit................... 0 Path Enabled................... Yes Path Manually Disabled......... No Alternate Path Number 2 Logical Device................. IBMtape7 Host Bus Adapter............... qla2xxx SCSI Host ID................... 4 SCSI Channel................... 0 Target ID...................... 1 Logical Unit................... 0 Path Enabled................... Yes Path Manually Disabled……… No Efim > 29 апр. 2016 г., в 20:15, Lee, Gary <g...@bsu.edu> написал(а): > > If I have data path failover support enabled in the lin_tape driver, how do I > define the path correctly to tsm? > > I need to make sure I catch the correct /dev/xxxx entry so that lin_tape can > manage the data paths. > What do I use in the device field of the path definition for a drive?
