Example of how to create a sctl device file for FCP (PA-RISC)
The following example shows how create a sctl device file for an HP VLS9000 robot. NetBackup uses the device file for robotic control.
To create an FCP robotic device file for HP-UX PA-RISC
- Invoke the ioscan -f command. The following output example is edited for readability:
ioscan -f Class I H/W Path Driver S/W State H/W Type Description ============================================================================= fc 0 0/2/0/0 td CLAIMED INTERFACE HP Tachyon XL2 Fibre Channel Mass Storage Adapter fcp 4 0/2/0/0.10 fcp CLAIMED INTERFACE FCP Domain ext_bus 6 0/2/0/0.10.11.255.0 fcpdev CLAIMED INTERFACE FCP Device Interface target 5 0/2/0/0.10.11.255.0.0 tgt CLAIMED DEVICE autoch 2 0/2/0/0.10.11.255.0.0.0 schgr CLAIMED DEVICE HP VLS tape 5 0/2/0/0.10.11.255.0.0.1 stape CLAIMED DEVICE HP Ultrium 4-SCSI tape 6 0/2/0/0.10.11.255.0.0.2 stape CLAIMED DEVICE HP Ultrium 4-SCSI tape 7 0/2/0/0.10.11.255.0.0.3 stape CLAIMED DEVICE HP Ultrium 4-SCSI Examine the output for the card instance number and the SCSI ID and LUN of the robotic device. In this example, the interface card instance number (the I column) is 6. If you use the card's H/W Path value as a mask (0/2/0/0.10.11.255.0), you see the following:
An HP VLS9000 robot is at SCSI ID 0, LUN 0.
Three Ultrium 4-SCSI drives are at SCSI ID 0 and LUN 1, LUN 2, and LUN 3.
- Determine the character major number of the sctl driver by using the lsdev command, as follows:
lsdev -d sctl Character Block Driver Class 203 -1 sctl ctl
The output from this command shows that the character major number for the sctl driver is 203.
- The commands to create the device file for the HP VLS9000 robotic control are as follows. The card instance number is 6, the target is 0, and the LUN is 0.
cd /dev/sctl /usr/sbin/mknod c6t0l0 c 203 0x060000
If you add the robot to NetBackup manually, specify the following pathname for robotic control:
/dev/sctl/c6t0l0