nvme-log-phy-rx-eom(1)

# nvme-log-phy-rx-eom(1) Manual Page

## NAME

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

## SYNOPSIS

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

## DESCRIPTION

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.

## OPTIONS

-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.

## GLOBAL OPTIONS

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.

## EXAMPLES

- 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

## NVME

Part of the nvme-user suite