Re: [PATCHv2] target/user: Disallow full passthrough (pass_level=0)

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On Tue, May 12, 2015 at 10:43:04AM -0700, Andy Grover wrote:
> I still see value in PASS_IO, but TCMU_PASS_ALL obviously is a superset of 
> that so I can live with just that if there isn't agreement on PASS_IO... it 
> just means userspace (tcmu-runner) needs to emulate more cmds itself.
>
> I'll work on a patch to have TCMU just do PASS_ALL.

PASS_IO does seem useful, but I think it needs a fair amount of work
to get right over the current state, e.g. define what actual commands
you want to send to userspace.  Piggybacking on SCSI commands there
and heaving a leaky abstraction needs to go away.
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