linux-kernel - Re: [PATCH 1/1] scsi: storvsc: Support manual scan of FC hosts on Hyper-V

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Message-ID: <20160315134009.GA3595@infradead.org>
Date:	Tue, 15 Mar 2016 06:40:09 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, ohering@...e.com,
	jbottomley@...allels.com, hch@...radead.org,
	linux-scsi@...r.kernel.org, apw@...onical.com, vkuznets@...hat.com,
	jasowang@...hat.com, martin.petersen@...cle.com, hare@...e.de
Subject: Re: [PATCH 1/1] scsi: storvsc: Support manual scan of FC hosts on
 Hyper-V

On Sat, Mar 12, 2016 at 01:52:48PM -0800, K. Y. Srinivasan wrote:
> The default user scan function associated with FC (fc_user_scan)
> is not suitable for FC hosts on Hyper-V since we don't have
> an rport associated with FC host on Hyper-V . Set it to NULL so we can
> support manual scan of FC targets on Hyper-V.

This isn't really how the FC transport class in intended to work, but
neither is the eh_timed_out (which I haven't seen in my tree yet).

It sounds like storvsc simply shouldn't attach to the FC transport
if it doesn't actually look like a FC HBA.