NVME-LOG-PHY-RX-(1) NVMe Manual NVME-LOG-PHY-RX-(1)

nvme-log-phy-rx-eom - Retrieves a Physical Interface Receiver Eye Opening Measurement log page from an NVMe device

nvme [<global-options>] log phy-rx-eom <device> [--lsp=<field> | -s <field>]
                        [--controller=<id> | -c <id>]

Retrieves a Physical Interface Receiver Eye Opening Measurement log page from an NVMe device and provides the returned structure.

The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).

On success it returns 0, error code otherwise.

-s <field>, --lsp=<field>

The log specified field configuring the controller’s action to take during processing of the command and the measurement quality.

-c <id>, --controller=<id>

Controller ID of the controller associated with the PCIe port to be measured.

The following options are defined at the top-level nvme command and are available to this subcommand:

--dry-run

Print the command that would be executed, but do not actually execute it.

--no-ioctl-probing

Disable probing for 64-bit IOCTL support.

--no-retries

Disable retry logic on transient errors.

-o <fmt>, --output-format=<fmt>

Set the reporting format to normal, tabular, 'json, or binary. Only one output format may be used at a time.

--output-format-version=<version>

Select the output format version. Version 1 uses the original field naming, while version 2 (default) provides more consistent and script-friendly field names.

--timeout=<ms>

Set the timeout for the command in milliseconds.

-v, --verbose

Increase the level of detail in the output. May be specified multiple times to further increase verbosity.

These options can also be set as machine-wide defaults in nvme-cli.conf(5). A command-line flag always overrides the file.

•Start a best quality measurement and retrieve the log page header 
# nvme log phy-rx-eom /dev/nvme0 --lsp=10
•Retrieve a finished best quality measurement on controller with ID 3 
# nvme log phy-rx-eom /dev/nvme0 --lsp=2 --controller=3

Part of the nvme-user suite

09/07/2026 NVMe