Veritas Volume Manager 5.0.1 Release Notes, HP-UX 11i v3, First Edition, November 2009

NOTE: You must execute these steps for all agile DSFs in the /dev/rdisk/ directory.
If new LUNs or DSFs are added to the host at runtime on the HP-UX host (that is,
Storage Foundation is already configured and then new LUNs are added), you must
execute the following steps separately for the newly added LUNs.
1. Determine if the attribute is already disabled, that is, if alua_enabled is set to
false. The following scsimgr command displays the alua_enabled attribute
and its persistence.
# scsimgr get_attr -D /dev/rdisk/disk460 -a alua_enabled
SCSI ATTRIBUTES FOR LUN : /dev/rdisk/disk460
name = alua_enabled
current = true
default = true
saved =
2. Disable nMP ALUA for a LUN:
# scsimgr set_attr -D /dev/rdisk/disk460 -a alua_enabled=0
Value of attribute alua_enabled set successfully
This scsimgr command sets the alua_enabled attribute to 0 to disable nMP
ALUA.
3. Verify that the attribute is set correctly:
# scsimgr get_attr -D /dev/rdisk/disk460 -a alua_enabled
SCSI ATTRIBUTES FOR LUN : /dev/rdisk/disk460
name = alua_enabled
current = false
default = true
saved =
NOTE: The current state is changed to false to indicate that the native ALUA
attribute for this particular LUN path is disabled.
4. Make the alua_enabled attribute persistent across host reboots:
# scsimgr save_attr -D /dev/rdisk/disk460 -a alua_enabled=0
Value of attribute alua_enabled set successfully
NOTE: You need not reboot the host to make these changes effective. You must
not run I/O while making these changes.
5. Validate that both the name and saved attributes are set correctly:
# scsimgr get_attr -D /dev/rdisk/disk460 -a alua_enabled
SCSI ATTRIBUTES FOR LUN : /dev/rdisk/disk460
name = alua_enabled
current = false
default = true
saved = false
6. Display the alua_enabled attribute for all LUNs in the server:
20 Veritas Volume Manager 5.0.1 Release Notes