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[#]: collector: (lujun9972)
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[#]: translator: ( )
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: url: ( )
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[#]: subject: (NVMe on Linux)
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[#]: via: (https://www.networkworld.com/article/3397006/nvme-on-linux.html)
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[#]: author: (Sandra Henry-Stocker https://www.networkworld.com/author/Sandra-Henry_Stocker/)
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NVMe on Linux
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======
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In case you haven't yet noticed, some incredibly fast solid-state disk technology is as available for Linux as it is for other operating systems.
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![Sandra Henry-Stocker][1]
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NVMe stands for “non-volatile memory express” and is a host controller interface and storage protocol that was created to accelerate the transfer of data between enterprise and client systems and solid-state drives (SSD). It works over a computer's high-speed Peripheral Component Interconnect Express (PCIe) bus. What I see when I look at this string of letters, however, is “envy me.” And the reason for the envy is significant.
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Using NVMe, data transfer happens _much_ faster than it does with rotating drives. In fact, NVMe drives can move data seven times faster than SATA SSDs. That’s seven times faster than the SSDs that many of us are using today. This means that your systems could boot blindingly fast when an NVMe drive is serving as its boot drive. In fact, these days anyone buying a new system should probably not consider one that doesn’t come with NVMe built-in — whether a server or a PC.
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### Does NVMe work with Linux?
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Yes! NVMe has been supported in the Linux kernel since 3.3. Upgrading a system, however, generally requires that both an NVMe controller and an NVMe disk be available. Some external drives are available but need more than the typical USB port for attaching to the system.
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[MORE ON NETWORK WORLD: Linux: Best desktop distros for newbies][2]
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To check your kernel release, use a command like this:
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```
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$ uname -r
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5.0.0-15-generic
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```
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If your system is NVMe-ready, you should see a device (e.g., /dev/nvme0), but only if you have an NVMe controller installed. If you don’t have an NVMe controller, you can still get some information on your NVMe-readiness using this command:
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```
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$ modinfo nvme | head -6
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filename: /lib/modules/5.0.0-15-generic/kernel/drivers/nvme/host/nvme.ko
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version: 1.0
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license: GPL
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author: Matthew Wilcox <willy@linux.intel.com>
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srcversion: AA383008D5D5895C2E60523
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alias: pci:v0000106Bd00002003sv*sd*bc*sc*i*
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```
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### Learn more
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More details on what you need to know about the insanely fast NVMe storage option are available on _[PCWorld][3]._
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Specs, white papers and other resources are available at [NVMexpress.org][4].
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Join the Network World communities on [Facebook][5] and [LinkedIn][6] to comment on topics that are top of mind.
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--------------------------------------------------------------------------------
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via: https://www.networkworld.com/article/3397006/nvme-on-linux.html
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作者：[Sandra Henry-Stocker][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.networkworld.com/author/Sandra-Henry_Stocker/
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[b]: https://github.com/lujun9972
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[1]: https://images.idgesg.net/images/article/2019/05/nvme-100797708-large.jpg
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[2]: https://www.networkworld.com/slideshow/153439/linux-best-desktop-distros-for-newbies.html#tk.nww-infsb
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[3]: https://www.pcworld.com/article/2899351/everything-you-need-to-know-about-nvme.html
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[4]: https://nvmexpress.org/
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[5]: https://www.facebook.com/NetworkWorld/
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[6]: https://www.linkedin.com/company/network-world
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[#]: collector: (lujun9972)
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[#]: translator: (warmfrog)
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: url: ( )
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[#]: subject: (NVMe on Linux)
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[#]: via: (https://www.networkworld.com/article/3397006/nvme-on-linux.html)
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[#]: author: (Sandra Henry-Stocker https://www.networkworld.com/author/Sandra-Henry_Stocker/)
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Linux 上的 NVMe
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===============
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如果你还没注意到，一些极速的固态磁盘技术对于Linux和其他操作系统都是可用的。
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![Sandra Henry-Stocker][1]
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NVMe 代表“非易失性内存快车”，它是一个主机控制器接口和存储协议，用于加速企业和客户端系统以及固态驱动器(SSD)之间的数据传输。它通过电脑的高速外围组件互联快车总线（PCIe）工作。当我看到这些名词时，我感到“羡慕”。羡慕的原因很重要。
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使用 NVMe，数据传输的速度比旋转磁盘快很多。事实上，NVMe 驱动能够比 SATA SSD 快 7 倍。这比我们今天很多人用的固态硬盘快了 7 倍多。这意味着，如果你用一个 NVMe 驱动盘作为启动盘，你的系统能够启动的非常快。事实上，如今任何人买一个新的系统可能都不会考虑那些没有自带 NVMe 的，不管是服务器或者个人电脑。
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### NVMe 在 Linux 下能工作吗？
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是的！NVMe 自 Linux 内核 3.3 版本就支持了。更新一个系统，然而，通常同时需要一个 NVMe 控制器和一个 NVMe 磁盘。一些外置磁盘也行，但是为了添加到系统中，需要的不仅仅是通用的 USB 接口。
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[MORE ON NETWORK WORLD: Linux: Best desktop distros for newbies][2]
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为了检查内核版本，使用下列命令：
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```
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$ uname -r
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5.0.0-15-generic
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```
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如果你的系统已经用了 NVMe，你将看到一个设备（例如， /dev/nvme0），但是仅在你安装了 NVMe 控制器的情况下。如果你没有，你可以用下列命令获取使用 NVMe 的相关信息。
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```
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$ modinfo nvme | head -6
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filename: /lib/modules/5.0.0-15-generic/kernel/drivers/nvme/host/nvme.ko
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version: 1.0
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license: GPL
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author: Matthew Wilcox <willy@linux.intel.com>
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srcversion: AA383008D5D5895C2E60523
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alias: pci:v0000106Bd00002003sv*sd*bc*sc*i*
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```
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### 了解更多
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如果你想了解极速的 NVMe 存储的更多细节，可在 _[PCWorld][3]_ 获取。
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规格，白皮书和其他资源可在 [NVMexpress.org][4] 获取。
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--------------------------------------------------------------------------------
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via: https://www.networkworld.com/article/3397006/nvme-on-linux.html
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作者：[Sandra Henry-Stocker][a]
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选题：[lujun9972][b]
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译者：[warmfrog](https://github.com/warmfrog)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.networkworld.com/author/Sandra-Henry_Stocker/
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[b]: https://github.com/lujun9972
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[1]: https://images.idgesg.net/images/article/2019/05/nvme-100797708-large.jpg
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[2]: https://www.networkworld.com/slideshow/153439/linux-best-desktop-distros-for-newbies.html#tk.nww-infsb
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[3]: https://www.pcworld.com/article/2899351/everything-you-need-to-know-about-nvme.html
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[4]: https://nvmexpress.org/
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[5]: https://www.facebook.com/NetworkWorld/
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[6]: https://www.linkedin.com/company/network-world
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