From: Chao Leng <lengchao@huawei.com>
To: Christoph Hellwig <hch@lst.de>
Cc: kbusch@kernel.org, axboe@fb.com, sagi@grimberg.me,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH] nvme-core: introduce the preferential local retry mechanism
Date: Wed, 29 Jul 2020 10:06:43 +0800 [thread overview]
Message-ID: <eed46cb8-1c6b-b83c-3ef4-bc06c922b214@huawei.com> (raw)
In-Reply-To: <20200728112050.GB31546@lst.de>
On 2020/7/28 19:20, Christoph Hellwig wrote:
> If the callers asks for failfast, the caller will get failfast,
> period.
>
If user issue cmd through ioctrl, nvme core will set cmd_flags:
REQ_FAILFAST_DRIVER, and then in some scenarios which need retry io
after a defined time, we will return io error, this is not what we
expected. So we need introduce the preferential local retry mechanism.
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next prev parent reply other threads:[~2020-07-29 2:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-27 6:06 [PATCH] nvme-core: introduce the preferential local retry mechanism Chao Leng
2020-07-28 11:20 ` Christoph Hellwig
2020-07-29 1:58 ` Chao Leng
2020-07-29 2:06 ` Chao Leng [this message]
2020-07-29 2:31 ` Keith Busch
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