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Petersen" Organization: Oracle Corporation Message-ID: References: <20200615233424.13458-1-keith.busch@wdc.com> <20200615233424.13458-6-keith.busch@wdc.com> <20200616104142.zxw25txhsg2eyhsb@mpHalley.local> <20200617074328.GA13474@lst.de> Date: Wed, 17 Jun 2020 08:01:31 -0400 In-Reply-To: <20200617074328.GA13474@lst.de> (Christoph Hellwig's message of "Wed, 17 Jun 2020 09:43:28 +0200") MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9654 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 spamscore=0 phishscore=0 bulkscore=0 malwarescore=0 mlxscore=0 adultscore=0 suspectscore=1 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006170093 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9654 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 phishscore=0 mlxscore=0 clxscore=1011 malwarescore=0 impostorscore=0 adultscore=0 cotscore=-2147483648 lowpriorityscore=0 mlxlogscore=999 spamscore=0 suspectscore=1 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006170093 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200617_050606_014646_3DCD60A0 X-CRM114-Status: GOOD ( 15.46 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jens Axboe , Niklas Cassel , Damien Le Moal , Ajay Joshi , Sagi Grimberg , Keith Busch , Dmitry Fomichev , Aravind Ramesh , Javier =?utf-8?Q?Gonz=C3=A1lez?= , linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, Hans Holmberg , Matias =?utf-8?Q?Bj=C3=B8rling?= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org > Because Append is the way to go and we've moved the Linux zoned block > I/O stack to required it, Just to add some historical context: The first discussions about how to support block devices with a non-random write model in Linux happened maybe a decade ago. Drive vendors came to LSF/MM to solicit feedback on how Linux could support impending SMR devices. We spent a long time going over various approaches, including some that are similar to what is now being entertained as alternative to Append. The conclusion back then was that an Append-like model (tell-us-where-you-put-it) was the only reasonable way to accommodate these devices in Linux given how our filesystems and I/O stack worked. Consequently, I don't think it is at all unreasonable for us to focus on devices that implement that mode of operation in the kernel. This is exactly the that we as a community asked the storage industry to provide! -- Martin K. Petersen Oracle Linux Engineering _______________________________________________ linux-nvme mailing list linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme