SCSI sync unsupported: who's guilty?

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Hi everyone,
During testing of bcachefs with a aacraid controller, I encountered the following issue: The
bcachefs kernel thread reports a critical IO error due to aacraid disabling SCSI command
SYNCHRONIZE_CACHE by default.
Who should handle those cases?
- adapter: does it need to "discard" the invalid CDB and act like it completed successfully?
- aacraid: enable when explicity requested?
- block: does it need to "skip" the block error and move on?
- kernel thread: "ignore" the error?
I have no idea what the proper way to do here would be.  Anyone who does?
Janpieter.


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