---
name: "nvme-log-telemetry"
section: "1"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nvme-log-telemetry"
---

# nvme-log-telemetry(1)

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

## NAME

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

## SYNOPSIS

```
nvme [<global-options>] log telemetry <device>
                        [--output-file=<file> | -O <file>]
                        [--host-generate=<gen> | -g <gen>]
```

## 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.

## 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. Other versions are rejected.

- \--quiet

  Suppress informational messages. Errors are still reported, and --quiet cancels any --verbose for the library log level.

- \--set-options=\<key=value\>\[,\<key=value\>...\]

  Set libnvme library options for this invocation. Supported keys are *force-4k*, *mi-probe-enabled*, *test-base-dir* and *test-sysfs-dir*.

- \--timeout=\<ms\>

  Set the timeout for the command in milliseconds. *infinite* or *-1* waits without a time limit (0xffffffff).

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

## EXAMPLES

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

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

## NVME

Part of the nvme-user suite