The nova.scheduler.filters.io_ops_filter Module

class AggregateIoOpsFilter

Bases: nova.scheduler.filters.io_ops_filter.IoOpsFilter

AggregateIoOpsFilter with per-aggregate the max io operations.

Fall back to global max_io_ops_per_host if no per-aggregate setting found.

class IoOpsFilter

Bases: nova.scheduler.filters.BaseHostFilter

Filter out hosts with too many concurrent I/O operations.

host_passes(host_state, spec_obj)

Use information about current vm and task states collected from compute node statistics to decide whether to filter.