The vxdisk command is used to display the multi-pathing information for a particular metadevice. The metadevice is a device representation of a physical disk having multiple physical paths through the system's HBA controllers. In Dynamic Multi-Pathing (DMP,) all the physical disks in the system are represented as metadevices with one or more physical paths.
To display the multi-pathing information on a system
# vxdisk path
SUBPATH DANAME DMNAME GROUP STATE hdisk1 hdisk1 mydg01 mydg ENABLED hdisk9 hdisk9 mydg01 mydg ENABLED hdisk2 hdisk2 mydg02 mydg ENABLED hdisk10 hdisk10 mydg02 mydg ENABLED . . .
This shows that two paths exist to each of the two disks, mydg01 and mydg02, and also indicates that each disk is in the ENABLED state.
# vxdisk list devicename
For example, to view multi-pathing information for hdisk18, use the following command:
# vxdisk list hdisk18
The output from the vxdisk list command displays the multi-pathing information, as shown in the following example:
Device: hdisk18 devicetag: hdisk18 type: simple hostid: sys1 . . . Multipathing information: numpaths: 2 hdisk18 state=enabled type=primary hdisk26 state=disabled type=secondary
The numpaths line shows that there are 2 paths to the device. The next two lines in the "Multipathing information" section of the output show that one path is active (state=enabled) and that the other path has failed (state=disabled).
The type field is shown for disks on Active/Passive type disk arrays such as the EMC CLARiiON, Hitachi HDS 9200 and 9500, Sun StorEdge 6xxx, and Sun StorEdge T3 array. This field indicates the primary and secondary paths to the disk.
The type field is not displayed for disks on Active/Active type disk arrays such as the EMC Symmetrix, Hitachi HDS 99xx and Sun StorEdge 99xx Series, and IBM ESS Series. Such arrays have no concept of primary and secondary paths.
# vxdmpadm getsubpaths dmpnodename=devicename
For example, to view multi-pathing information for emc_clariion0_17, use the following command:
# vxdmpadm getsubpaths dmpnodename=emc_clariion0_17
Typical output from the vxdmpadm getsubpaths command is as follows:
NAME STATE[A] PATH-TYPE[M] CTLR-NAME ENCLR-TYPE ENCLR-NAME ATTRS =========================================================================== hdisk107 ENABLED(A) PRIMARY fscsi1 EMC_CLARiiON emc_clariion0 - hdisk17 ENABLED SECONDARY fscsi0 EMC_CLARiiON emc_clariion0 - hdisk2 ENABLED SECONDARY fscsi0 EMC_CLARiiON emc_clariion0 - hdisk32 ENABLED(A) PRIMARY fscsi0 EMC_CLARiiON emc_clariion0 -