nvme-rpmb-read-counter(1)

Usage

nvme [<global-options>] rpmb read-counter <device> [{--target=<target-id> | -t <target-id>}]

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.

-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.

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.

-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.

• Read current write counter of RPMB target 0

# nvme rpmb read-counter /dev/nvme0 --target=0

Part of the nvme-user suite