NAS-131090 / 25.04 / Fibre Channel Support

[bmeagherix]

Add support for Fibre Channel targets

Overview

SCST includes support for Fibre Channel targets using QLA2xxx HBAs. This PR includes the middleware changes necessary to utilize the mechanism.

• ALUA is supported, using the same HA internal iSCSI targets as are used for iSCSI ALUA support,
• NPIV will be supported

API summary

In CORE an fcport CRUD interface was available to perform the target to FC port mapping. A similar CRUD API is presented here.

However, in CORE we could reliably pair the ports on each node in a HA system simply by using the same moniker (e.g. isp0). Since this is not quite true in SCALE we instead will have a DB table / API to wire the ports together based upon the slot information obtained from dmidecode. The auto-wiring will use a default moniker of fc0, etc ... so that any migration from SCALE will be forced to manually check that the A/B controllers port pairing are as expected. The upshot of all of this is that another (private) fc.fc_host API is implemented.

The fc.fc_host API will also include the NPIV setting for the FC Host port, which in CORE was a System Tunable.

To support the UI fcport.port_choices and fcport.status are also included.

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This CI run shows

• no general iSCSI regressions
• Passing Fibre Channel CI tests

[bugclerk]

Jira URL: https://ixsystems.atlassian.net/browse/NAS-131090

[bmeagherix]

FWIW, currently writing more unit tests, but will need to wait for another PR to land/merge before rebasing this PR and committing those tests.

[bugclerk]

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