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Diffstat (limited to 'nova/conf/scheduler.py')
| -rw-r--r-- | nova/conf/scheduler.py | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/nova/conf/scheduler.py b/nova/conf/scheduler.py index c75bd07c5b..c7aa2ad76d 100644 --- a/nova/conf/scheduler.py +++ b/nova/conf/scheduler.py @@ -464,6 +464,49 @@ Possible values: * An integer or float value, where the value corresponds to the multipler ratio for this weigher. """), + cfg.FloatOpt("hypervisor_version_weight_multiplier", + default=1.0, + help=""" +Hypervisor Version weight multiplier ratio. + +The multiplier is used for weighting hosts based on the reported +hypervisor version. +Negative numbers indicate preferring older hosts, +the default is to prefer newer hosts to aid with upgrades. + +Possible values: + +* An integer or float value, where the value corresponds to the multiplier + ratio for this weigher. + +Example: + +* Strongly prefer older hosts + + .. code-block:: ini + + [filter_scheduler] + hypervisor_version_weight_multiplier=-1000 + + +* Moderately prefer new hosts + + .. code-block:: ini + + [filter_scheduler] + hypervisor_version_weight_multiplier=2.5 + +* Disable weigher influence + + .. code-block:: ini + + [filter_scheduler] + hypervisor_version_weight_multiplier=0 + +Related options: + +* ``[filter_scheduler] weight_classes`` +"""), cfg.FloatOpt("io_ops_weight_multiplier", default=-1.0, help=""" |