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

# [NAME](#NAME)

nvme-log-effects - Send NVMe Command Effects log page request, returns result and log

# [SYNOPSIS](#SYNOPSIS)

```
nvme [<global-options>] log effects <device> [--raw-binary | -b]
```

# [DESCRIPTION](#DESCRIPTION)

Retrieves the NVMe Command Effects log page from an NVMe device and provides the returned structure.

The &lt;device&gt; parameter is mandatory and should be the NVMe character device (ex: /dev/nvme0).

On success, the returned command effects log structure will be printed for each command that is supported.

# [OPTIONS](#OPTIONS)

-b, --raw-binary

This option will print the raw buffer to stdout. Structure is not parsed by program. This overrides the verbose option.

# [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. Other versions are rejected.

--quiet

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

--set-options=&lt;key=value&gt;\[,&lt;key=value&gt;...]

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

--timeout=&lt;ms&gt;

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

# [EXAMPLES](#EXAMPLES)

•Print the effects log page in a human readable format:

```
# nvme log effects /dev/nvme0
```

•Have the program return the raw structure in binary:

```
# nvme log effects /dev/nvme0 --raw-binary > effects_log.raw
# nvme log effects /dev/nvme0 -b > effects_log.raw
```

# [NVME](#NVME)

Part of the nvme-user suite

10/30/2026 NVMe

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Document: nvme-log-effects(1) from nvme-cli 3.2-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli