linux-kernel - Re: [GIT PULL] ib_srpt: Initial SRP Target merge for v3.2-rc1

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Message-ID: <1320516243.5859.184.camel@haakon2.linux-iscsi.org>
Date:	Sat, 05 Nov 2011 11:04:03 -0700
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	Bart Van Assche <bvanassche@....org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	target-devel <target-devel@...r.kernel.org>,
	linux-rdma <linux-rdma@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Roland Dreier <roland@...estorage.com>,
	Christoph Hellwig <hch@....de>
Subject: Re: [GIT PULL] ib_srpt: Initial SRP Target merge for v3.2-rc1

On Sat, 2011-11-05 at 08:37 +0100, Bart Van Assche wrote:
> On Fri, Nov 4, 2011 at 9:10 PM, Nicholas A. Bellinger
> <nab@...ux-iscsi.org> wrote:
> > This is the PULL request for an initial merge of the ib_srpt driver
> > using mainline target infrastructure into v3.2-rc1.
> 
> In case anyone is interested, the most important unaddressed comments
> for this version of ib_srpt are:
> - There are still too many module parameters. This makes ib_srpt
> harder to use than necessary because several of these parameters can
> only be set at module load time.

Can you be more specific here..?  I went through the module parameters
and made the ones that where used in a per-port specific context into
configfs attributes as Roland recommended, but it seems like you are
saying that more should be made into attributes.  Which ones..?

> - The last WQE event can arrive before the queue pair is reset,
> resulting in a hanging session and blocking future logins
> (http://www.mail-archive.com/linux-rdma@vger.kernel.org/msg09678.html).

Yep, was going to get this resolved post merge along with my patch now
in lio-core.git to address active I/O shutdown with ib_srpt.

> - The "ib_srpt: Convert srp_max_rdma_size into per port configfs
> attribute" contradicts the I/O controller concept. This is a bug.
> (http://www.mail-archive.com/linux-rdma@vger.kernel.org/msg09677.html).
> 

As mentioned in the thread, I deferred to Roland's input on that one.
So you're saying this should be made back into a module parameter now,
or what..?

--nab


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