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Setting the attributes of the paths to an enclosure

You can use the vxdmpadm setattr command to set the following attributes of the paths to an enclosure or disk array:

active 

Changes a standby (failover) path to an active path. The following example specifies an active path for an A/P-C disk array: 

# vxdmpadm setattr path sde pathtype=active

nomanual 

Restores the original primary or secondary attributes of a path. This example restores the attributes for a path to an A/P disk array: 

# vxdmpadm setattr path sdm pathtype=nomanual

nopreferred 

Restores the normal priority of a path. The following example restores the default priority to a path: 

# vxdmpadm setattr path sdk pathtype=nopreferred

preferred [priority=N

Specifies a path as preferred, and optionally assigns a priority number to it. If specified, the priority number must be an integer that is greater than or equal to one. Higher priority numbers indicate that a path is able to carry a greater I/O load. 


  Note   Setting a priority for path does not change the I/O policy. The I/O policy must be set independently.


See "Specifying the I/O policy" on page 159. 

This example first sets the I/O policy to priority for an Active/Active disk array, and then specifies a preferred path with an assigned priority of 2: 

# vxdmpadm setattr enclosure enc0 \

  iopolicy=priority

# vxdmpadm setattr path sdk pathtype=preferred \

  priority=2

primary 

Defines a path as being the primary path for an Active/Passive disk array. The following example specifies a primary path for an A/P disk array: 

# vxdmpadm setattr path sdm pathtype=primary

secondary 

Defines a path as being the secondary path for an Active/Passive disk array. This example specifies a secondary path for an A/P disk array: 

# vxdmpadm setattr path sdn pathtype=secondary

standby 

Marks a standby (failover) path that it is not used for normal I/O scheduling. This path is used if there are no active paths available for I/O. The next example specifies a standby path for an A/P-C disk array: 

# vxdmpadm setattr path sde pathtype=standby