# nvme-id-ns(1) Manual Page

## NAME

nvme-list-ns - Send NVMe Identify List Namespaces, return result and structure

## SYNOPSIS

    nvme list-ns <device> [--namespace-id=<nsid> | -n <nsid>]
                            [--csi=<command_set_identifier> | -y <command_set_identifier>]
                            [--all | -a] [--output-format=<fmt> | -o <fmt>]

## DESCRIPTION

For the NVMe device given, sends an identify command for namespace list and provides the result and 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). If the starting namespace in the list always begins with 0 unless the `'--namespace-id'` option is given to override.

On success, the namespace array is printed for each index and nsid for a valid nsid.

## OPTIONS

-n <nsid>
--namespace-id=<nsid>

  Retrieve the identify list structure starting with the given nsid.

-y <command_set_identifier>
--csi=<command_set_identifier>

  If this value is given, retrieve the identify list structure associated with the specified I/O command set.

-a
--all

  Retrieve the identify list structure for all namespaces in the subsystem, whether attached or inactive.

-o <format>
--output-format=<format>

  Set the reporting format to normal, or json. Only one output format can be used at a time.

## EXAMPLES

- Print the namespaces present for zoned command set in JSON format

      # nvme list-ns /dev/nvme0 -y 2 -a -o json

- Print the namespaces present for NVM Command Set in normal format

      # nvme list-ns /dev/nvme0

## NVME

Part of the nvme-user suite