a3256416ce
This patch add a feature "Port Scheduler" for the Hitachi VSP Driver. On Hitachi VSP storage, host groups are created and the same WWNs are registered in all of the ports that are specified for the parameter hitachi_compute_target_ports or for the parameter hitachi_target_ports. For Hitachi storage devices, a maximum of 255 host groups and 255 WWNs can be registered for one port. When volumes are attached, the upper limit on the number of WWNs that can be registered might be unexpectedly exceeded. For the feature "Port scheduler", when the cinder-volume service starts, the Fibre Channel Zone Manager obtains the WWNs of active compute nodes and of active VMs. When volumes are attached, the WWNs are registered in a round-robin procedure, in the same order as the order of ports specified for the parameter hitachi_compute_target_ports or for the parameter hitachi_target_ports. Implements: blueprint hitachi-vsp-port-scheduler Change-Id: I29882b806f5c799995ce209d19d3297275e5527c
15 lines
788 B
YAML
15 lines
788 B
YAML
---
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features:
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Hitachi driver: Add a feature ``Port Scheduler``. This feature is enabled
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when specifying ``True`` for the parameter ``hitachi_port_scheduler``.
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When this feature is enabled and an attach request is received, the active
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WWNs that are obtained by Fibre Channel Zone Manager will be distributed
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and registered to the host groups of each port of the storage system.
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To use this feature, specify ``True`` for both parameters
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``hitachi_group_request`` and ``hitachi_rest_name_only_discovery``.
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If you specify ``False`` or use default value for the
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``hitachi_rest_name_only_discovery``, it will take a long time to attach
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volume, by seeking the host group for all specified ports.
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This feature is supported on Fibre Channel only.
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