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Message-ID: <20190503122035.GA21501@lst.de>
Date:   Fri, 3 May 2019 14:20:35 +0200
From:   Christoph Hellwig <hch@....de>
To:     Keith Busch <kbusch@...nel.org>
Cc:     Akinobu Mita <akinobu.mita@...il.com>,
        Keith Busch <keith.busch@...el.com>,
        linux-nvme@...ts.infradead.org,
        LKML <linux-kernel@...r.kernel.org>,
        Johannes Berg <johannes@...solutions.net>,
        Jens Axboe <axboe@...com>, Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>
Subject: Re: [PATCH 0/4] nvme-pci: support device coredump

On Fri, May 03, 2019 at 06:12:32AM -0600, Keith Busch wrote:
> Could you actually explain how the rest is useful? I personally have
> never encountered an issue where knowing these values would have helped:
> every device timeout always needed device specific internal firmware
> logs in my experience.

Yes.  Also not that NVMe now has the 'device initiated telemetry'
feauture, which is just a wired name for device coredump.  Wiring that
up so that we can easily provide that data to the device vendor would
actually be pretty useful.

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