linux-kernel - Re: [PATCH] nvmet: preserve controller serial number between reboots

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Date:   Thu, 13 Jul 2017 19:17:55 +0200
From:   Christoph Hellwig <hch@....de>
To:     Sagi Grimberg <sagi@...mberg.me>
Cc:     Christoph Hellwig <hch@....de>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        Keith Busch <keith.busch@...el.com>, mwilck@...e.de,
        Linux Kernel Mailinglist <linux-kernel@...r.kernel.org>,
        Linux NVMe Mailinglist <linux-nvme@...ts.infradead.org>
Subject: Re: [PATCH] nvmet: preserve controller serial number between
        reboots

On Thu, Jul 13, 2017 at 07:38:27PM +0300, Sagi Grimberg wrote:
>
>>> It seems weird that a subsystem has a serial.
>>
>> But that's actually how NVMe defines them.
>
> Where is that wording?

Right there in the SN field description:

"Serial Number (SN): Contains the serial number for the NVM subsystem
 that is assigned by the vendor as an ASCII string. Refer to section
 7.10 for unique identifier requirements. Refer to section 1.5 for
 ASCII string requirements"