NVME-LOG-TELEMETRY(1) NVMe Manual NVME-LOG-TELEMETRY(1)

# [NAME](#NAME)

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

# [SYNOPSIS](#SYNOPSIS)

```
nvme [<global-options>] log telemetry <device>


                        [--output-file=<file> | -O <file>]


                        [--host-generate=<gen> | -g <gen>]
```

# [DESCRIPTION](#DESCRIPTION)

Retrieves an Telemetry Host-Initiated log page from an NVMe device and provides the returned structure.

The &lt;device&gt; 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](#OPTIONS)

-O &lt;file&gt;, --output-file=&lt;file&gt;

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

-g &lt;gen&gt;, --host-generate=&lt;gen&gt;

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 &lt;da&gt;, --data-area=&lt;da&gt;

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.

# [GLOBAL OPTIONS](#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 &lt;fmt&gt;, --output-format=&lt;fmt&gt;

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

--output-format-version=&lt;version&gt;

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=&lt;ms&gt;

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)](/man/os/nvme-cli/nvme-cli.conf.5). A command-line flag always overrides the file.

# [EXAMPLES](#EXAMPLES)

•Retrieve Telemetry Host-Initiated data to telemetry\_log.bin

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

# [NVME](#NVME)

Part of the nvme-user suite

09/18/2026 NVMe

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Document: nvme-log-telemetry(1) from nvme-cli 3.1-r1 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli