| NVME-RPMB-READ-CO(1) | NVMe Manual | NVME-RPMB-READ-CO(1) |
NAME
nvme-rpmb-read-counter - Read the RPMB write counter
SYNOPSIS
nvme [<global-options>] rpmb read-counter <device>
[--target=<target-id> | -t <target-id>]
DESCRIPTION
Reads the current write counter of the specified RPMB target. The counter value read is printed to STDOUT.
The <device> parameter is mandatory and an NVMe character device (ex: /dev/nvme0) must be specified.
OPTIONS
-t <target>, --target=<target>
RPMB target id. This should be one of the supported RPMB
targets as reported by nvme rpmb info. If nothing is given, the default
of 0 is used as the RPMB target.
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. 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.
EXAMPLES
•Read current write counter of RPMB target 0
# nvme rpmb read-counter /dev/nvme0 --target=0
NVME
Part of the nvme-user suite
| 10/30/2026 | NVMe |