![]() ![]() : 0x1 NS Management and Attachment Supported : 0x1 NVMe-MI Send and Receive Supported : 0 Virtualization Management Not Supported : 0 Doorbell Buffer Config Not Supported : 0 Get LBA Status Capability Not Supported : 0 Lockdown Command and Feature Not Supported You can run the identify controller command withĪnd look for 0x1 to display features that the drive supports. Other useful information includes drive model, vendor, firmware version, etc., which all have abbreviations called out in the NVMe spec. Instead of guessing which features a vendor supports, they are all neatly laid out in the capabilities field. The identify controller command is used to learn about the capabilities of the NVMe controllers (in most cases, this is the capabilities of an NVMe SSD). Simple test for health of a drive, pass/failĭownload firmware to the drive, update the firmware on the driveīasics – Version, List, and Learning About the Capabilities of Attached NVMe Controllers / SSDs Health of the SSD (critical warning info), temperature, endurance, power on hours and error summaryĪ log that contains information about errors encounteredĬreate a namespace, can be used for overproviosning an SSD Securely eliminate all data on device, cannot be stopped. Secure erase the data on an SSD, format an LBA size or protection information for end-to-end data protection ![]() Lists all the NVMe SSDs attached: name, serial number, size, LBA format, and serialĭiscover information about NVMe controller and features it supportsĭiscover optimal namespace size, protection information, LBA size We will go into all these commands in detail. Remember NVMe-CLI is powerful and can do almost anything that the NVMe specification calls out if used correctly. Here is the cheat sheet of the most commonly used commands. On Ubuntu 22.04, the compiling would look like this. You can also head over to the releases page and get the most stable build, while you will have to follow the instructions on the GitHub to compile and install for your distribution. The Github page has instructions for all the distributions, example for Ubuntu / Debian is below. NVMe-CLI can is obtained as a package for all the Linux distributions. The output will have abbreviations for the various fieldsĮxample: Model Number (MN) is displayed in NVMe-CLI as mn For instance, for the Identify Controller data structure, you can send the command nvme-id-ctrl in NVMe-CLI. The good news is all the commands in NVMe-CLI directly match the spec! All you need to do is download a copy of the latest NVMe spec to be able to interpret the abbreviations for the various commands.Īll the abbreviations in the output of the NVMe commands can be found in the specification. You can search the Linux man page for help, but it won’t be enough to understand the capabilities of NVMe-CLI. It supports NVMe SSDs as well as NVMe over Fabrics (NVMe-oF™) architecture and offers optional vendor plugins for supplemental information above and beyond the specification. NVMe-CLI is an open-source, powerful feature set that follows the NVMe specification and is supported by all major distributions. Overview of featuresĭata centers require many management functions to monitor the health of the SSD, monitor endurance, update firmware, securely erase storage and read various logs. The tool to manage NVMe SSDs in Linux is called NVMe Command Line Interface (NVMe-CLI). NVM Express ® (NVMe ®) technology has enabled a robust set of industry-standard software, drivers, and management tools that have been developed for storage. Jonmichael Hands, VP Storage, Chia Network
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