linux-kernel - Re: [PATCH v7 08/14] nvmet-core: allow one host per passthru-ctrl

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Message-ID: <05a74e81-1dbd-725f-1369-5ca5c5918db1@mellanox.com>
Date:   Thu, 15 Aug 2019 15:36:02 +0300
From:   Max Gurtovoy <maxg@...lanox.com>
To:     Logan Gunthorpe <logang@...tatee.com>,
        <linux-kernel@...r.kernel.org>, <linux-nvme@...ts.infradead.org>,
        <linux-block@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>
CC:     Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
        "Keith Busch" <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Chaitanya Kulkarni <Chaitanya.Kulkarni@....com>,
        Stephen Bates <sbates@...thlin.com>
Subject: Re: [PATCH v7 08/14] nvmet-core: allow one host per passthru-ctrl


On 8/2/2019 2:45 AM, Logan Gunthorpe wrote:
> This patch rejects any new connection to the passthru-ctrl if this
> controller is already connected to a different host. At the time of
> allocating the controller we check if the subsys associated with
> the passthru ctrl is already connected to a host and reject it
> if the hostnqn differs.

This is a big limitation.

Are we plan to enable many front-end ctrl's to connect to the single 
back-end ctrl in the future ?

I guess it can be incremental to this series.