Cambex Bus Adapter - Manual (Page 23)

• failed or offline status is considered first. A path will not
be used if failed or offline.
• Anti-thrashing prevents paths to the wrong controller
from causing thrashing.
• HBA preference - normally all HBAs have equal
preference to paths. To block an hba from using a path,
do:
Command line:
dpfutil hba_set_wwn cbx0 no (default is yes)
to list HBA preferences:
odmget -q"attribute=hba_pref" CuAt
in smit:
Devices
-> Cambex Dynamic Path Management
-> Change / Show Characteristics of Cambex Managed
HBAs
• Controller preference - this is for multi-controller RAID
arrays where one or more of the controllers reports that
it owns the LUN. Controllers which do not report
preference, are treated equally.
•
Target preference - To make one path higher preference
than other paths to the same LUN, use target
preference
.
Command line:
dpfutil target_set_wwn cbx10 yes (default is no)
to list target preference:
odmget -q"attribute=tgt_pref" CuAt
in smit:
Devices
-> Cambex Dynamic Path Management
-> Change / Show Characteristics of Cambex
Dynamic
Paths
-> Change / Show Physical Path Routing
Preferences
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