HP 3PAR HP-UX Implementation Guide

# ioscan -kfnNC lunpath
Class I H/W Path Driver S/W State H/W Type Description
==================================================================
lunpath 19 0/0/4/1/0.0x20420002ac000036.0x4006000000000000 eslpt
CLAIMED LUN_PATH LUN path for disk23
lunpath 20 0/0/4/1/1.0x21520002ac000036.0x4006000000000000 eslpt
CLAIMED LUN_PATH LUN path for disk23
# scsimgr get_attr -D /dev/rdisk/disk23
...
current = 0x50002ac0024f0036 --> Oracle2
j. In cases where all the LUNs below the target port are put in the authentication state,
which can happen when the target port was moved but the LUNs are the same, then the
target port must be authenticated. Use the following command to authenticate a target:
# scsimgr -f replace_wwid -C tgtpath -I 3
scsimgr: Successfully validated binding of LUN paths with new LUN
The target instance can be obtained using the “ioscan -kfnNC tgtpath” command
k. You can change the DSF name to a new name or to an existing stale device using the
io_redirect_dsf command.
The following example shows the host converting /dev/disk/disk23 to the stale
/dev/disk/disk22.
CAUTION: All I/O should be paused and the disk reconfigured from Volume Manger
or Application before changing the name. For details, consult the appropriate HP
documentation.
# io_redirect_dsf -d /dev/disk/disk23 -n /dev/disk/disk22
# ioscan
# ioscan -kfnNC disk
..
disk 23 64000/0xfa00/0x244 esdisk NO_HW DEVICE 3PARdataVV
/dev/disk/disk23 /dev/rdisk/disk23
disk 22 64000/0xfa00/0x245 esdisk CLAIMED DEVICE 3PARdataVV
/dev/disk/disk22 /dev/rdisk/disk22
# scsimgr get_attr -D /dev/rdisk/disk22
...
current = 0x50002ac0024f0036 --> Oracle2
l. You can give alias names for the disk as a way of tracking the device names with the HP
3PAR StoreServ Storage volume name using the alias option for set_attr in the
scsimgr command.
# ioscan -kfnNC disk
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
...
disk 22 64000/0xfa00/0x245 esdisk CLAIMED DEVICE 3PARdataVV
/dev/disk/disk22 /dev/rdisk/disk22
# scsimgr get_attr -D /dev/rdisk/disk22
...
current = 0x50002ac0024f0036 --> Oracle2 (InServ VV name)
Setting Up Multipathing Software on HP-UX 11i v3 31