The "exclusive_pref_bit" optional argument has been added to the *multipath* ALUA prioritizer
If the "exclusive_pref_bit" argument is added to the *multipath* Asymmetric Logical Unit Access (ALUA) prioritizer, and a path has the Target Port Group Support (TPGS) `pref` bit set, *multipath* makes a path group using only that path and assigns the highest priority to the path. Users can now either allow the preferred path to be in a path group with other paths that are equally optimized, which is the default option, or in a path group by itself by adding the "exclusive_pref_bit" argument.
The multipath alua prioritizer now allows a an option, "exclusive_pref_bit"
If you use
prio "alua exclusive_pref_bit"
in your device configuration, multipath will create a pathgroup that only contains the path with the pref bit set, and will give that pathgroup the highest priority.
Oops. Comment 1 used the RHEL6 syntax. In RHEL7, you would add
to your device configuration. This is only used if you have
set as well.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.