NVME-ID-NVM-NS-L(1) NVMe Manual NVME-ID-NVM-NS-L(1)

nvme-id-nvm-ns-lba-format - Send NVMe Identify NVM Command Set specific Namespace data structure for specified LBA format, display structure

nvme [<global-options>] id nvm-ns-lba-format <device>
                        [--uuid-index=<uuid-index> | -U <uuid_index>]
                        [--lba-format-index=<lba_format_index> | -i <lba_format_index>]

Identify NVM Command Set specific Namespace data structure for the specified LBA format index for the NVM Command Set specified in the CSI field.

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 structure may be returned in one of several ways depending on the option flags; the structure may be parsed by the program or the raw buffer may be printed to stdout.

-U <uuid-index>, --uuid-index=<uuid-index>

UUID Index of the feature

-i <lba_format_index>, --lba-format-index=<lba_format_index>

This field specifies the index into the LBA Format list identifying the LBA Format capabilities that are to be returned

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.

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 interpret the returned buffer and display the known fields in a human readable format: 
# nvme id nvm-ns-lba-format /dev/nvme0n1 -i 0
•Have the program return the raw structure in binary: 
# nvme id nvm-ns-lba-format /dev/nvme0 -i 0 -o binary > nvm_id_ns.raw
# nvme id nvm-ns-lba-format /dev/nvme0n1 -i 0 --output-format=binary > nvm_id_ns.raw

Part of the nvme-user suite

09/07/2026 NVMe