From: Chaitanya Kulkarni <chaitanyak@nvidia.com>
To: Keith Busch <kbusch@fb.com>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>
Cc: "hch@lst.de" <hch@lst.de>, "sagi@grimberg.me" <sagi@grimberg.me>,
Keith Busch <kbusch@kernel.org>
Subject: Re: [PATCH] nvme-pci: add trouble shooting steps for timeouts
Date: Mon, 6 Jun 2022 17:17:02 +0000 [thread overview]
Message-ID: <4144bd92-670b-7cb2-3499-390d9c4f1897@nvidia.com> (raw)
In-Reply-To: <20220606165317.2633782-1-kbusch@fb.com>
On 6/6/22 09:53, Keith Busch wrote:
> From: Keith Busch <kbusch@kernel.org>
>
> Many users have encountered IO timeouts with a CSTS value of 0xffffffff,
> which indicates a failure to read the register. While there are various
> potential causes for this observation, faulty NVMe APST has been the
> culprit quite frequently. Add the recommended troubleshooting steps in
> the error output when this condition occurs.
>
> Signed-off-by: Keith Busch <kbusch@kernel.org>
> ---
I've seen these reports with CSTS == 0xffffffff many times,
looks good, this should help...
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
-ck
next prev parent reply other threads:[~2022-06-06 17:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-06 16:53 [PATCH] nvme-pci: add trouble shooting steps for timeouts Keith Busch
2022-06-06 17:17 ` Chaitanya Kulkarni [this message]
2022-06-07 10:16 ` Christoph Hellwig
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