Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

■ Configure the attributes of the paths to an enclosure.
■ Set the I/O policy that is used for the paths to an enclosure.
■ Enable or disable I/O for a path, HBA controller or array port on the system.
■ Upgrade disk controller firmware.
■ Rename an enclosure.
■ Configure how DMP responds to I/O request failures.
■ Configure the I/O throttling mechanism.
■ Control the operation of the DMP path restoration thread.
■ Get or set the values of various tunables used by DMP.
The following sections cover these tasks in detail along with sample output.
See “Changing the values of tunables” on page 531.
See the vxdmpadm(1M) manual page.
Retrieving information about a DMP node
The following command displays the DMP node that controls a particular physical
path:
# vxdmpadm getdmpnode nodename=c3t2d1
The physical path is specified by argument to the nodename attribute, which must
be a valid path listed in the /dev/rdsk directory.
The command displays output similar to the following:
NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME
===============================================================
c3t2d1 ENABLED ACME 2 2 0 enc0
Use the -v option to display the LUN serial number and the array volume ID.
# vxdmpadm -v getdmpnode nodename=c3t2d1
NAME STATE PATHS ENBL DSBL ENCLR-NAME SERIAL-NO ARRAY_VOL_ID
===================================================================================
c3t2d1 ENABLED 2 2 0 HDS9500-ALUA0 D600172E015B E01
Use the enclosure attribute with getdmpnode to obtain a list of all DMP nodes for
the specified enclosure.
# vxdmpadm getdmpnode enclosure=enc0
Administering Dynamic Multipathing
Administering DMP using vxdmpadm
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