truenas
NAS-131090 / 25.04 / Fibre Channel Support
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 (not yet ready, hence WIP)
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 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.
