Setting the attributes of the paths to an enclosure
You can use the
setattr command to set the following attributes of the paths to an enclosure or disk array:
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
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
Restores the normal priority of a path. The following example restores the default priority to a path:
vxdmpadm setattr path sdk pathtype=nopreferred
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.
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 \
vxdmpadm setattr path sdk pathtype=preferred \
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
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
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