From: Kai-Heng Feng <kai.heng.feng@canonical.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>,
open list <linux-kernel@vger.kernel.org>,
"open list:NVM EXPRESS DRIVER" <linux-nvme@lists.infradead.org>,
Jens Axboe <axboe@fb.com>, linux-stable <stable@vger.kernel.org>,
Keith Busch <kbusch@kernel.org>
Subject: Re: [PATCH] nvme/pci: Use Discard instead of Write Zeroes on SK hynix SC300
Date: Tue, 21 Apr 2020 12:51:18 +0800 [thread overview]
Message-ID: <33565F7F-307C-408C-861D-72517F564967@canonical.com> (raw)
In-Reply-To: <20200417125929.GA5053@lst.de>
> On Apr 17, 2020, at 20:59, Christoph Hellwig <hch@lst.de> wrote:
>
> On Fri, Apr 17, 2020 at 04:36:41PM +0800, Kai-Heng Feng wrote:
>> After commit 6e02318eaea5 ("nvme: add support for the Write Zeroes
>> command"), SK hynix SC300 becomes very slow with the following error
>> message:
>> [ 224.567695] blk_update_request: operation not supported error, dev nvme1n1, sector 499384320 op 0x9:(WRITE_ZEROES) flags 0x1000000 phys_seg 0 prio class 0]
>>
>> Use quirk NVME_QUIRK_DEALLOCATE_ZEROES to workaround this issue.
>
> Do you have a written guarantee from SK Hynix that it will always zero
> all blocks discarded?
Raised the issue to SK Hynix and waiting for their reply...
Kai-Heng
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next prev parent reply other threads:[~2020-04-21 4:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-17 8:36 [PATCH] nvme/pci: Use Discard instead of Write Zeroes on SK hynix SC300 Kai-Heng Feng
2020-04-17 12:59 ` Christoph Hellwig
2020-04-21 4:51 ` Kai-Heng Feng [this message]
2020-04-17 19:25 ` Chaitanya Kulkarni
2020-04-21 4:51 ` Kai-Heng Feng
2020-07-23 15:57 ` [PATCH v2] nvme/pci: Add new quirk for SK hynix PC400 NLB off-by-one bug Kai-Heng Feng
2020-07-23 16:03 ` Christoph Hellwig
2020-07-23 16:10 ` Kai-Heng Feng
2020-07-23 17:29 ` [PATCH v3] nvme/pci: Prevent SK hynix PC400 from using Write Zeroes command Kai-Heng Feng
2020-07-26 15:29 ` Christoph Hellwig
2020-10-13 8:34 ` [PATCH] nvme-pci: Disable Write Zeroes on Sandisk Skyhawk Kai-Heng Feng
2020-10-14 0:20 ` Chaitanya Kulkarni
2020-10-15 5:09 ` Kai-Heng Feng
2020-10-16 14:04 ` Christoph Hellwig
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