How to Detect Devices Attached to Servers

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How to Detect Devices Attached to Servers

This topic describes how to detect devices that are attached to data mover servers and how to detect SCSI devices attached to specific platforms.

Data Mover Servers

All devices appear as a link file in the /dev/CA directory on data mover servers, as illustrated by the following screen:

All devices appear as a link file in the /dev/CA directory on data mover servers.

Changer files: lib:x,x,x,x
Device files: tape:x,x,x,x

The DeviceSerialMap file contains the information about changers and devices that are attached to the data mover server.

Linux Platforms (Example: Red Hat Enterprise Linux)

Use the following syntax to detect all changers:
Use the following syntax to detect all devices:

Note: You can access all types of SCSI devices using the sg driver. The sg device mapping configurations can be viewed in the /proc/scsi/sg/devices directory or the /proc/scsi/sg/device_strs directory.

UNIX Platforms (Example: SUN 10)

SUN 10 operating systems use two types of SCSI drivers: st and sgen. You can determine the types of drivers and changers from the /etc/driver_aliases file. The following screen illustrates that the driver type is st and the changer type is scsiclass,01.

The following list describes the syntax for st drivers.

To detect all st changers, use the following syntax:
To detect check the status of st device, use the following syntax:
To detect all available st devices, use the following syntax:

Note: If st devices are not available, the following results appear:

Note: Optionally, you can obtain a device list from the /kernel/drv/st.conf file.

The following list describes the syntax for sgen drivers:

For sgen changers, use the same syntax as all st changers.
For sgen devices, use the same syntax as st all devices and reference the /dev/scsi/sequential file.
Optionally, you can obtain a device list from the /kernel/drv/sgen.conf file.

UNIX Platforms (Example: HP RISC 11.23)

Use the following syntax on HP RISC 11.23 operating systems to detect changer information:

bash-4.0# ioscan -FnC autoch
scsi:wsio:T:T:F:29:231:262144:autoch:schgr:0/3/1/0.0.0.0.0.0:8 128 3 2 0 0 0 0 2
47 199 17 149 21 224 137 113 :3:root.sba.lba.lpfc.lpfd.tgt.schgr:schgr:CLAIMED:D
EVICE:HP      D2DBS:4
                            /dev/rac/c4t0d0
scsi:wsio:T:T:F:29:231:589824:autoch:schgr:0/3/1/0.0.5.0.0.0:8 128 3 2 0 0 0 0 1
53 125 185 26 130 50 80 249 :1:root.sba.lba.lpfc.lpfd.tgt.schgr:schgr:CLAIMED:DE
VICE:HP      MSL G3 Series:9
                            /dev/rac/c9t0d0
scsi:wsio:T:T:F:29:231:917504:autoch:schgr:0/3/1/0.0.10.0.0.0:8 128 3 2 0 0 0 0
153 125 185 26 242 88 164 118 :2:root.sba.lba.lpfc.lpfd.tgt.schgr:schgr:CLAIMED:
DEVICE:HP      MSL G3 Series:14
                            /dev/rac/c14t0d0

Use the following syntax on HP RISC 11.23 operating systems to detect available device information:

bash-4.0# ioscan -fnC tape
Class     I  H/W Path       Driver S/W State   H/W Type     Description
=======================================================================
tape     15  0/3/1/0.0.1.0.0.0  stape CLAIMED     DEVICE       HP      Ultrium VT
                           /dev/rmt/15m           /dev/rmt/c5t0d0BEST
                           /dev/rmt/15mb          /dev/rmt/c5t0d0BESTb
                           /dev/rmt/15mn          /dev/rmt/c5t0d0BESTn
                           /dev/rmt/15mnb         /dev/rmt/c5t0d0BESTnb
tape     14  0/3/1/0.0.2.0.0.0  stape CLAIMED     DEVICE       HP      Ultrium VT
                           /dev/rmt/14m           /dev/rmt/c6t0d0BEST
                           /dev/rmt/14mb          /dev/rmt/c6t0d0BESTb
                           /dev/rmt/14mn          /dev/rmt/c6t0d0BESTn
                           /dev/rmt/14mnb         /dev/rmt/c6t0d0BESTnb
tape     17  0/3/1/0.0.3.0.0.0  stape CLAIMED     DEVICE       HP      Ultrium VT
                           /dev/rmt/17m           /dev/rmt/c7t0d0BEST
                           /dev/rmt/17mb          /dev/rmt/c7t0d0BESTb
                           /dev/rmt/17mn          /dev/rmt/c7t0d0BESTn
                           /dev/rmt/17mnb         /dev/rmt/c7t0d0BESTnb
tape      7  0/3/1/0.0.6.0.0.0  stape CLAIMED     DEVICE       HP      Ultrium 3-SCSI
                           /dev/rmt/7m             /dev/rmt/c10t0d0BEST
                           /dev/rmt/7mb            /dev/rmt/c10t0d0BESTb
                           /dev/rmt/7mn            /dev/rmt/c10t0d0BESTn
                           /dev/rmt/7mnb           /dev/rmt/c10t0d0BESTnb
tape      8  0/3/1/0.0.7.0.0.0  stape CLAIMED     DEVICE       HP      Ultrium 3-SCSI
                           /dev/rmt/8m             /dev/rmt/c11t0d0BEST
                           /dev/rmt/8mb            /dev/rmt/c11t0d0BESTb
                           /dev/rmt/8mn            /dev/rmt/c11t0d0BESTn
                           /dev/rmt/8mnb           /dev/rmt/c11t0d0BESTnb

If the device files become unusable, you can create the device files using the following command:
```
#mkdir /tmp/tape
# mv /dev/rmt/* /tmp/tape
# insf -e
# ioscan -fnC tape
```

UNIX Platforms (Example: AIX 5.3)

Execute the following command to capture detail information about tape media:

bash-3.00# lscfg -vp|grep -i -p rmt
fcnet0           U0.1-P1-I5/Q1                       Fibre Channel Network Protocol Device
fscsi1           U0.1-P1-I5/Q1                       FC SCSI I/O Controller Protocol Device
rmt30            U0.1-P1-I5/Q1-W50014380018CC723-L0  Other FC SCSI Tape Drive
rmt31            U0.1-P1-I5/Q1-W50014380018CC721-L0  Other FC SCSI Tape Drive
rmt32            U0.1-P1-I5/Q1-W50014380018CC6E7-L0  Other FC SCSI Tape Drive
rmt33            U0.1-P1-I5/Q1-W50014380018CC6E5-L0  Other FC SCSI Tape Drive
rmt34            U0.1-P1-I5/Q1-W50014380018CC6E3-L0  Other FC SCSI Tape Drive
rmt35            U0.1-P1-I5/Q1-W50014380018CC6E1-L0  Other FC SCSI Tape Drive
rmt38            U0.1-P1-I5/Q1-W50014380018CC703-L0  Other FC SCSI Tape Drive
rmt39            U0.1-P1-I5/Q1-W50014380018CC701-L0  Other FC SCSI Tape Drive

Execute the following command to capture the status of tape media:

bash-3.00# lsdev -Cc tape
rmt30 Available 1H-08-02 Other FC SCSI Tape Drive
rmt31 Available 1H-08-02 Other FC SCSI Tape Drive
rmt32 Available 1H-08-02 Other FC SCSI Tape Drive
rmt33 Available 1H-08-02 Other FC SCSI Tape Drive
rmt34 Available 1H-08-02 Other FC SCSI Tape Drive
rmt35 Available 1H-08-02 Other FC SCSI Tape Drive
rmt36 Defined   1H-08-02 Other FC SCSI Tape Drive
rmt37 Defined   1H-08-02 Other FC SCSI Tape Drive
rmt38 Available 1H-08-02 Other FC SCSI Tape Drive
rmt39 Available 1H-08-02 Other FC SCSI Tape Drive

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