SYNOPSIS

nvme [<global-options>] effects-log <device> [--raw-binary | -b]
                        [--human-readable | -H]

DESCRIPTION

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

The <device> 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

-b
--raw-binary

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

-H
--human-readable

Display values in a human-readable format where possible. (deprecated, use --verbose)

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.

EXAMPLES

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

    # nvme effects-log /dev/nvme0

  • Have the program return the raw structure in binary: 

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

NVME

Part of the nvme-user suite