Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

136 Administering dynamic multipathing (DMP)
Administering DMP using vxdmpadm
The following command lists attributes for all enclosures in a system:
# vxdmpadm listenclosure all
The following is example output from this command:
ENCLR_NAME ENCLR_TYPE ENCLR_SNO STATUS ARRAY_TYPE
===============================================================
Disk Disk DISKS CONNECTED Disk
ANA0 ACME 508002000001d660 CONNECTED A/A
enc0 A3 60020f20000001a90000 CONNECTED A/P
Displaying information about array ports
To display the attributes of an array port that is accessible via a path, DMP node or HBA
controller, use one of the following commands:
# vxdmpadm getportids path=path-name
# vxdmpadm getportids dmpnodename=dmpnode-name
# vxdmpadm getportids ctlr=ctlr-name
The information displayed for an array port includes the name of its enclosure, and its ID
and worldwide name (WWN) identifier.
The following form of the command displays information about all of the array ports
within the specified enclosure:
# vxdmpadm getportids enclr=enclr-name
The following example shows information about the array port that is accessible via DMP
node c2t66d0:
# vxdmpadm getportids dmpnodename=c2t66d0
NAME ENCLR-NAME ARRAY-PORT-ID pWWN
==============================================================
c2t66d0 HDS9500V0 1A 20:00:00:E0:8B:06:5F:19
Displaying information about TPD-controlled devices
The third-party driver (TPD) coexistence feature allows I/O that is controlled by third-
party multipathing drivers to bypass DMP while retaining the monitoring capabilities of
DMP. The following commands allow you to display the paths that DMP has discovered
for a given TPD device, and the TPD device that corresponds to a given TPD-controlled
node discovered by DMP:
# vxdmpadm getsubpaths tpdnodename=TPD_node_name
# vxdmpadm gettpdnode nodename=DMP_node_name
See “Changing device naming for TPD-controlled enclosures” on page 93 for information
on how to select whether OS or TPD-based device names are displayed.
For example, consider the following disks in an EMC Symmetrix array controlled by
PowerPath, which are known to DMP:
# vxdisk list
DEVICE TYPE DISK GROUP STATUS