IBM TS2340 User Guide - Page 98

Persistent Naming Support

Page 98 highlights

HP-UX Device Driver (ATDD) #atdd_lssf /dev/rmt/393mnb atdd card instance 30 available at address Major = 79 settings = No Rewind, Berkeley, Best Format, IBM 03590H1A /dev/rmt/393mnb Minor = Ox1E90C0 v In HP-UX 11i v3: ATDD supports the HP-UX lssf, insf and rmsf commands. To display special file information, enter the lssf command. For example, # lssf /dev/rtape/tape14_BESTnb atdd Berkeley No-Rewind best density available at address 64000/0xfa00/0x32 /dev/rtape/tape14_BESTnb # lssf /dev/rchgr/autoch1 acdd section 0 at address 64000/0xfa00/0x21 /dev/rchgr/autoch1 If the device special files are not created on the system, use the # insf command to generate them. Persistent Naming Support Persistent naming support is used to ensure that attached devices are always configured with the same logical name across system reboots. For this purpose, the HP-UX tape driver creates an additional set of device special files with a prefix of "s" for the configured tape drives in HP-UX 11.0, 11i v1 and v2, such as s55m in the following example. # ioscan -funC tape Class I H/W Path Driver S/W State H/W Type Description tape 103 1/0/0/0.97.25.255.2.7.0 atdd CLAIMED DEVICE IBM 03592E05 /dev/rmt/103m /dev/rmt/c10t7d0BESTn /dev/rmt/s55mb /dev/rmt/103mb /dev/rmt/c10t7d0BEST /dev/rmt/s55mn /dev/rmt/103mn /dev/rmt/c10t7d0BESTb /dev/rmt/s55m /dev/rmt/103mnb /dev/rmt/c10t7d0BESTnb /dev/rmt/s55mnb In HP-UX 11i v3, HP introduces the native multi-pathing and path-independent persistent Device Special Files (DSFs) and the auto discovery of devices greatly to enhance the overall manageability. The ATDD does not create the additional set of device special files with a prefix of "s". The persistent DSF format for tape devices introduced with the Agile view in HP-UX 11i v3 is: # ioscan -funNC tape Class I H/W Path Driver S/W State H/W Type Description tape 1 64000/0xfa00/0x7 estape CLAIMED DEVICE IBM 03592E05 /dev/rtape/tape1_BEST /dev/rtape/tape1_BESTn /dev/rtape/tape1_BESTb /dev/rtape/tape1_BESTnb # ioscan -funNC autoch Class I H/W Path Driver S/W State H/W Type Description autoch 8 64000/0xfa00/0xa acdd CLAIMED DEVICE IBM 03584L22 /dev/rchgr/autoch8 To map a persistent DSF to its legacy DSF, enter the following: # ioscan -m dsf /dev/rtape/tape1_BESTb Persistent DSF Legacy DSF(s) /dev/rtape/tape1_BESTb /dev/rmt/c3t15d0BESTb /dev/rmt/c9t6d0BESTb 80 IBM Tape Device Drivers Installation and User's Guide

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#atdd_lssf
/dev/rmt/393mnb
atdd card instance 30 available at address
Major = 79
Minor = Ox1E90C0
settings = No Rewind, Berkeley, Best Format,
IBM 03590H1A /dev/rmt/393mnb
v
In HP-UX 11i v3:
ATDD supports the HP-UX
lssf
,
insf
and
rmsf
commands. To display special file
information, enter the
lssf
command. For example,
# lssf /dev/rtape/tape14_BESTnb
atdd Berkeley No-Rewind best density available at address 64000/0xfa00/0x32
/dev/rtape/tape14_BESTnb
# lssf /dev/rchgr/autoch1
acdd section 0 at address 64000/0xfa00/0x21 /dev/rchgr/autoch1
If the device special files are not created on the system, use the
# insf
command
to generate them.
Persistent Naming Support
Persistent naming support is used to ensure that attached devices are always
configured with the same logical name across system reboots. For this purpose, the
HP-UX tape driver creates an additional set of device special files with a prefix of
“s” for the configured tape drives in HP-UX 11.0, 11i v1 and v2, such as s55m in
the following example.
# ioscan -funC tape
Class
I
H/W Path
Driver S/W State
H/W Type
Description
===================================================================================
tape
103
1/0/0/0.97.25.255.2.7.0
atdd
CLAIMED
DEVICE
IBM
03592E05
/dev/rmt/103m
/dev/rmt/c10t7d0BESTn
/dev/rmt/s55mb
/dev/rmt/103mb
/dev/rmt/c10t7d0BEST
/dev/rmt/s55mn
/dev/rmt/103mn
/dev/rmt/c10t7d0BESTb
/dev/rmt/s55m
/dev/rmt/103mnb
/dev/rmt/c10t7d0BESTnb
/dev/rmt/s55mnb
In HP-UX 11i v3, HP introduces the native multi-pathing and path-independent
persistent Device Special Files (DSFs) and the auto discovery of devices greatly to
enhance the overall manageability. The ATDD does not create the additional set of
device special files with a prefix of “s”.
The persistent DSF format for tape devices introduced with the Agile view in
HP-UX 11i v3 is:
# ioscan -funNC tape
Class
I
H/W Path
Driver S/W State
H/W Type
Description
===================================================================
tape
1
64000/0xfa00/0x7
estape
CLAIMED
DEVICE
IBM 03592E05
/dev/rtape/tape1_BEST
/dev/rtape/tape1_BESTn
/dev/rtape/tape1_BESTb
/dev/rtape/tape1_BESTnb
# ioscan -funNC autoch
Class
I
H/W Path
Driver S/W State
H/W Type
Description
=================================================================
autoch
8
64000/0xfa00/0xa
acdd
CLAIMED
DEVICE
IBM 03584L22
/dev/rchgr/autoch8
To map a persistent DSF to its legacy DSF, enter the following:
# ioscan -m dsf /dev/rtape/tape1_BESTb
Persistent DSF
Legacy DSF(s)
========================================
/dev/rtape/tape1_BESTb
/dev/rmt/c3t15d0BESTb
/dev/rmt/c9t6d0BESTb
HP-UX Device Driver (ATDD)
80
IBM Tape Device Drivers Installation and User’s Guide