# nvme-telemetry-log(1) Manual Page

## NAME

nvme-telemetry-log - Retrieves a Telemetry Host-Initiated log page from an NVMe device

## SYNOPSIS

    nvme telemetry-log <device> [--output-file=<file> | -O <file>]
                            [--host-generate=<gen> | -g <gen>]
                            [--output-format=<fmt> | -o <fmt>] [--verbose | -v]

## DESCRIPTION

Retrieves an Telemetry Host-Initiated 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, the returned log structure will be in raw binary format only with --output-file option which is mandatory.

## OPTIONS

-O <file>
--output-file=<file>

  File name to which raw binary data will be saved to.

-g <gen>
--host-generate=<gen>

  If set to 1, controller shall capture the Telemetry Host-Initiated data representing the internal state of the controller at the time the associated Get Log Page command is processed. If cleated to 0, controller shall not update this data.

-d <da>
--data-area=<da>

  Retrieves the specific data area requested. Valid inputs are 1,2,3,4. If this option is not specified, the default value is 3, since data area 4 may not be supported.

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

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

-v
--verbose

  Increase the information detail in the output.

## EXAMPLES

- Retrieve Telemetry Host-Initiated data to telemetry_log.bin

      # nvme telemetry-log /dev/nvme0 --output-file=telemetry_log.bin

## NVME

Part of the nvme-user suite