NVME-LOG-FW(1)                    NVMe Manual                   NVME-LOG-FW(1)

NAME
       nvme-log-fw - Send NVMe Firmware log page request, returns result and
       log

SYNOPSIS
       nvme [<global-options>] log fw <device> [--raw-binary | -b]

DESCRIPTION
       Retrieves the NVMe Firmware log page from an NVMe device and provides
       the 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).

       On success, the returned f/w log structure may be returned in one of
       several ways depending on the option flags; the structure may parsed by
       the program and printed in a readable format or the raw buffer may be
       printed to stdout for another program to parse.

OPTIONS
       -b, --raw-binary
           Print the raw fw log buffer to stdout.

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.

       These options can also be set as machine-wide defaults in
       nvme-cli.conf(5). A command-line flag always overrides the file.

EXAMPLES
       o   Print the firmware log page in a human readable format:

               # nvme log fw /dev/nvme0

       o   Print the log firmware to a file:

               # nvme log fw /dev/nvme0 --raw-binary > fw_log.raw

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

NVME
       Part of the nvme-user suite

NVMe                              09/07/2026                    NVME-LOG-FW(1)