linux-kernel - Re: [PATCH 3/7] nvmet: add eui64 field to nvme

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Date:   Wed, 31 May 2017 11:46:31 +0200
From:   Christoph Hellwig <hch@....de>
To:     Johannes Thumshirn <jthumshirn@...e.de>
Cc:     Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
        Keith Busch <keith.busch@...el.com>,
        Linux NVMe Mailinglist <linux-nvme@...ts.infradead.org>,
        Linux Kernel Mailinglist <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/7] nvmet: add eui64 field to nvme_ns and populate via
        configfs

On Tue, May 30, 2017 at 11:45:25AM +0200, Johannes Thumshirn wrote:
> Mostly consistency. The current nvme host code has the EUI sprinkled all
> around. Sure I can drop it, but then what's the point in evaluating it
> on the host side? Other targets may send it, so we need in on the host
> and do we care about potentially awkward host implementations with Linux
> as a target? Also it's rather handy for testing as well, after all it's
> not too much and complex code.

There's only one place in the host code proper (discounting the
scsi translation mess), and that's because the field is still better
than not having any uniqueue identifier.  But I don't think we should
spread it any further.