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Manual Pages  — NVMECONTROL

NAME

nvmecontrol – NVM Express control utility

CONTENTS

SYNOPSIS


nvmecontrol devlist
nvmecontrol identify [-v] [-x] <device id>
nvmecontrol perftest <-n num_threads> <-o read|write> [-p] <-s size_in_bytes> <-t time_in_sec> <namespace id>
nvmecontrol reset <controller id>
nvmecontrol logpage <-p page_id> [-x] [-v vendor-string] [-b] <device id> <namespace id>
nvmecontrol firmware [-s slot] [-f path_to_firmware] [-a] <device id>
nvmecontrol power [-l] [-p -power_state] [-w -workload_hint]
nvmecontrol wdc cap-diag [-o -path_template] <device id>
nvmecontrol wdc drive-log [-o -path_template] <device id>
nvmecontrol wdc get-crash-dump [-o -path_template] <device id>

DESCRIPTION

NVM Express (NVMe) is a storage protocol standard, for SSDs and other high-speed storage devices over PCI Express.

logpage

The logpage command knows how to print log pages of various types. It also knows about vendor specific log pages from hgst/wdc and intel. Page 0xc1 for hgst/wdc contains the advanced smart information about the drive. Page 0xc1 is read latency stats for intel. Page 0xc2 is write latency stats for intel. Page 0xc5 is temperature stats for intel. Page 0xca is advanced smart information for intel.

Specifying -p help will list all valid vendors and pages. -x will print the page as hex. -b will print the binary data for the page.

wdc

The various wdc command retrieve log data from the wdc/hgst drives. The -o flag specifies a path template to use to output the files. Each file takes the path template (which defaults to nothing), appends the drive's serial number and the type of dump it is followed by .bin. These logs must be sent to the vendor for analysis. This tool only provides a way to extract them.

EXAMPLES

    nvmecontrol devlist

Display a list of NVMe controllers and namespaces along with their device nodes.

    nvmecontrol identify nvme0

Display a human-readable summary of the nvme0 IDENTIFY_CONTROLLER data.

    nvmecontrol identify -x -v nvme0ns1

Display an hexadecimal dump of the nvme0 IDENTIFY_NAMESPACE data for namespace 1.

    nvmecontrol perftest -n 32 -o read -s 512 -t 30 nvme0ns1

Run a performance test on nvme0ns1 using 32 kernel threads for 30 seconds. Each thread will issue a single 512 byte read command. Results are printed to stdout when 30 seconds expires.

    nvmecontrol reset nvme0

Perform a controller-level reset of the nvme0 controller.

    nvmecontrol logpage -p 1 nvme0

Display a human-readable summary of the nvme0 controller's Error Information Log. Log pages defined by the NVMe specification include Error Information Log (ID=1), SMART/Health Information Log (ID=2), and Firmware Slot Log (ID=3).

    nvmecontrol logpage -p 0xc1 -v wdc nvme0

Display a human-readable summary of the nvme0's wdc-specific advanced SMART data.

    nvmecontrol logpage -p 1 -x nvme0

Display a hexadecimal dump of the nvme0 controller's Error Information Log.

    nvmecontrol logpage -p 0xcb -b nvme0 > /tmp/page-cb.bin

Print the contents of vendor specific page 0xcb as binary data on standard out. Redirect it to a temporary file.

    nvmecontrol firmware -s 2 -f /tmp/nvme_firmware nvme0

Download the firmware image contained in "/tmp/nvme_firmware" to slot 2 of the nvme0 controller, but do not activate the image.

    nvmecontrol firmware -s 4 -a nvme0

Activate the firmware in slot 4 of the nvme0 controller on the next reset.

    nvmecontrol firmware -s 7 -f /tmp/nvme_firmware -a nvme0

Download the firmware image contained in "/tmp/nvme_firmware" to slot 7 of the nvme0 controller and activate it on the next reset.

    nvmecontrol power -l nvme0

List all the current power modes.

    nvmecontrol power -p 3 nvme0

Set the current power mode.

    nvmecontrol power nvme0

Get the current power mode.

AUTHORS

nvmecontrol was developed by Intel and originally written by Jim Harris <Mt jimharris@FreeBSD.org>.

This man page was written by Jim Harris <Mt jimharris@FreeBSD.org>.


NVMECONTROL (8) February 24, 2017

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