Reference

nvme-write-uncor(1)

Send an NVMe write uncorrectable command, return results

NAME

nvme-write-uncor - Send an NVMe write uncorrectable command, return results

SYNOPSIS

nvme [<global-options>] write-uncor <device>
                        [--start-block=<slba> | -s <slba>]
                        [--block-count=<nlb> | -c <nlb>]
                        [--namespace-id=<nsid> | -n <nsid>]
                        [--dir-type=<dtype> | -T <dtype>]
                        [--dir-spec=<dspec> | -S <dspec>]

DESCRIPTION

The Write Uncorrectable command is used to invalidate a range of logical blocks.

OPTIONS

-s <slba>, --start-block=<slba>

Start block.

-c, --block-count=<nlb>

Number of logical blocks to write uncorrectable.

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

Namespace ID use in the command. The broadcast value 0xffffffff can also be given as all or -1.

-T <dtype>, --dir-type=<dtype>

Directive type

-S <dspec>, --dir-spec=<dspec>

Directive specific

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

No examples yet.

NVME

Part of the nvme-user suite

History

--dir-spec since Debian 13 (Trixie); --dir-type since Debian 13 (Trixie); --dry-run since Arch Linux 2026-11-01; --no-ioctl-probing since Arch Linux 2026-11-01; --no-retries since Arch Linux 2026-11-01; --output-format since Debian 13 (Trixie); --output-format-version since Arch Linux 2026-11-01; --quiet since Arch Linux 2026-11-01; --set-options since Arch Linux 2026-11-01; --timeout since Debian 13 (Trixie); --verbose since Debian 13 (Trixie); -S since Debian 13 (Trixie); -T since Debian 13 (Trixie); -o since Debian 13 (Trixie); -v since Debian 13 (Trixie).

--force until Debian 12 (Bookworm); -t until Debian 13 (Trixie).