Veritas™ Volume Manager Administrator's Guide

Displaying paths controlled by a DMP node, controller, enclosure, or array port

The vxdmpadm getsubpaths command lists all of the paths known to DMP. The vxdmpadm getsubpaths command also provides options to list the subpaths through a particular DMP node, controller, enclosure, or array port. To list the paths through an array port, specify either a combination of enclosure name and array port id, or array port WWN. You can also display paths for devices controlled by third-party drivers.

To list all subpaths known to DMP:

# vxdmpadm getsubpaths

NAME		  STATE[A]	   PATH-TYPE[M] DMPNODENAME  ENCLR-NAME  CTLR  ATTRS
=======================================================================
c1t65d0	ENABLED(A)		-		          Disk_1	      Disk		      c1	   -
c1t66d0	ENABLED(A)		-		          Disk_2	      Disk		      c1	   -
c2t65d0	ENABLED(A)		-		          Disk_1	      Disk		      c2	   -
c2t66d0	ENABLED(A)		-		          Disk_2	      Disk		      c2	   -
c3t2d0  ENABLED(A)		-		          EMC0_1	      EMC0		      c3	   -
c3t2d1  ENABLED(A)		-		          EMC0_2	      EMC0		      c3	   -
c4t2d0  ENABLED(A)		-		          EMC0_1	      EMC0		      c4	   -
c4t2d1  ENABLED(A)		-		          EMC0_2	      EMC0		      c4	   -

The vxdmpadm getsubpaths command combined with the dmpnodename attribute displays all the paths to a LUN that are controlled by the specified DMP node name from the /dev/vx/rdmp directory:

# vxdmpadm getsubpaths dmpnodename=c2t66d0

NAME    STATE[A]  PATH-TYPE[M] CTLR-NAME ENCLR-TYPE ENCLR-NAME ATTRS
====================================================================
c2t66d0 ENABLED(A) PRIMARY     c2        ACME       enc0       -
c1t66d0 ENABLED    PRIMARY     c1        ACME       enc0       -

For A/A arrays, all enabled paths that are available for I/O are shown as ENABLED(A).

For A/P arrays in which the I/O policy is set to singleactive, only one path is shown as ENABLED(A). The other paths are enabled but not available for I/O. If the I/O policy is not set to singleactive, DMP can use a group of paths (all primary or all secondary) for I/O, which are shown as ENABLED(A).

Paths that are in the DISABLED state are not available for I/O operations.

A path that was manually disabled by the system administrator displays as DISABLED(M). A path that failed displays as DISABLED.

You can use getsubpaths to obtain information about all the paths that are connected to a particular HBA controller:

# vxdmpadm getsubpaths ctlr=c2

NAME    STATE[-]   PATH-TYPE[-] CTLR-NAME ENCLR-TYPE ENCLR-NAME ATTRS
=====================================================================
c2t1d0  ENABLED(A) PRIMARY      c2t1d0    ACME       enc0       -
c2t2d0  ENABLED(A) PRIMARY      c2t2d0    ACME       enc0       -
c2t3d0  ENABLED    SECONDARY    c2t3d0    ACME       enc0       -
c2t4d0  ENABLED    SECONDARY    c2t4d0    ACME       enc0       -

You can also use getsubpaths to obtain information about all the paths that are connected to a port on an array. The array port can be specified by the name of the enclosure and the array port ID, or by the worldwide name (WWN) identifier of the array port:

# vxdmpadm getsubpaths enclosure=enclosure portid=portid
# vxdmpadm getsubpaths pwwn=pwwn

For example, to list subpaths through an array port through the enclosure and the array port ID:

# vxdmpadm getsubpaths enclosure=HDS9500-ALUA0 portid=1A

NAME		    STATE[A]	  PATH-TYPE[M] DMPNODENAME ENCLR-NAME	   CTLR ATTRS
=======================================================================
c1t65d0	ENABLED(A)	PRIMARY	     c1t65d0s2   HDS9500-ALUA0	c1   -
c1t66d0	ENABLED(A)	PRIMARY	     c1t66d0s2   HDS9500-ALUA0	c1   -

For example, to list subpaths through an array port through the WWN:

# vxdmpadm getsubpaths pwwn=20:00:00:E0:8B:06:5F:19

NAME		    STATE[A]	  PATH-TYPE[M] DMPNODENAME ENCLR-NAME	   CTLR ATTRS
=======================================================================
c1t65d0	ENABLED(A)	PRIMARY	     c1t65d0s2   HDS9500-ALUA0	c1   -
c1t66d0	ENABLED(A)	PRIMARY	     c1t66d0s2   HDS9500-ALUA0	c1   -

You can use getsubpaths to obtain information about all the subpaths of an enclosure.

# vxdmpadm getsubpaths enclosure=enclosure_name [ctlr=ctlrname]

To list all subpaths of an enclosure:

# vxdmpadm getsubpaths enclosure=Disk
NAME	    	STATE[A]	   PATH-TYPE[M] DMPNODENAME ENCLR-NAME CTLR ATTRS
=====================================================================
c1t65d0	ENABLED(A)		-		          Disk_1	     Disk		     c1	  -
c1t66d0	ENABLED(A)		-		          Disk_2	     Disk		     c1	  -
c2t65d0	ENABLED(A)		-		          Disk_1	     Disk		     c2	  -
c2t66d0	ENABLED(A)		-		          Disk_2	     Disk		     c2	  - 

To list all subpaths of a controller on an enclosure:

# vxdmpadm getsubpaths enclosure=Disk ctlr=c1

By default, the output of the vxdmpadm getsubpaths command is sorted by enclosure name, DMP node name, and within that, path name. To sort the output based on the pathname, the DMP node name, the enclosure name, or the host controller name, use the -s option.

To sort subpaths information, use the following command:

# vxdmpadm -s {path | dmpnode | enclosure | ctlr} getsubpaths \
[all | ctlr=ctlr_name | dmpnodename=dmp_device_name | \
enclosure=enclr_name [ctlr=ctlr_name | portid=array_port_ID] | \
pwwn=port_WWN | tpdnodename=tpd_node_name]