NVME-NS-DESCS(1)                  NVMe Manual                 NVME-NS-DESCS(1)

NAME
       nvme-ns-descs - Send NVMe Identify for a list of Namespace
       Identification Descriptor structure, return result and structure

SYNOPSIS
       nvme ns-descs <device> [--namespace-id=<nsid> | -n <nsid>] [--raw-binary | -b]
                               [--output-format=<fmt> | -o <fmt>] [--verbose | -v]

DESCRIPTION
       For the NVMe device given, sends an identify for a list of namespace
       identification descriptor structures command 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 character device is given, the '--namespace-id'
       option is mandatory, otherwise it will use the ns-id of the namespace
       for the block device you opened. For block devices, the ns-id used can
       be overridden with the same option.

       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.

OPTIONS
       -n <nsid>, --namespace-id=<nsid>
           Retrieve the identify namespace identification descriptor structure
           for the given nsid. This is required for the character devices, or
           overrides the block nsid if given.

       -b, --raw-binary
           Print the raw buffer to stdout. Structure is not parsed by program.

       -o <fmt>, --output-format=<fmt>
           Set the reporting format to normal, json or binary. Only one output
           format can be used at a time.

       -v, --verbose
           Increase the information detail in the output.

EXAMPLES
       o   If using the character device or overriding namespace #2:

               # nvme ns-descs /dev/nvme0 -n 1
               # nvme ns-descs /dev/nvme0n1 -n 2
               # nvme ns-descs /dev/nvme0 --namespace-id=1

       o   Have the program return the raw structure in binary:

               # nvme ns-descs /dev/nvme0n1 --raw-binary > ns_descs.raw
               # nvme ns-descs /dev/nvme0n1 -b > ns_descs.raw

           It is probably a bad idea to not redirect stdout when using this
           mode.

NVME
       Part of the nvme-user suite

NVMe                              02/16/2024                  NVME-NS-DESCS(1)