NVME-FEAT-WRITE-A(1) NVMe Manual NVME-FEAT-WRITE-A(1)

nvme-feat-write-atom-normal - Get and set write atomicity normal feature

nvme [<global-options>] feat write-atom-normal <device>
                        [--dn | -d]
                        [--sel=<select> | -S <select>] [--save | -s]

Get and set write atomicity normal feature.

The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).

If the setting option (--dn) is specified, the command will update the write atomicity configuration. If this option is not specified, it will retrieve and display the current configuration.

On success it returns 0, error code otherwise.

-d, --dn

Disable Normal. When set, this flag disables write atomicity for normal (non-atomic) write commands.

-S <select>, --sel=<select>

Select (SEL): This field specifies which value of the attributes to return in the provided data:
Select Name Description
0 current Current
1 default Default
2 saved Saved
3 supported Supported capabilities

-s, --save

Save the attribute so that it persists through all power states and resets.

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). A command-line flag always overrides the file.

•Has the program issue a feat write-atom-normal to get the current configuration: 
# nvme feat write-atom-normal /dev/nvme0
•Has the program issue a feat write-atom-normal to disable normal write atomicity: 
# nvme feat write-atom-normal /dev/nvme0 --dn --save

Part of the nvme-user suite.

10/30/2026 NVMe