nvme-wdc-namespace-resize - Resizes the device's namespace.
nvme [<global-options>] wdc namespace-resize <device>
[--nsid=<NAMESPACE ID>, -n <NAMSPACE ID>]
[--op-option=<OP OPTION>, -O <OP OPTION>]
For the NVMe device given, sends the WDC Vendor Specific Command
that modifies the namespace size reported the device.
The <device> parameter is mandatory NVMe character device
(ex: /dev/nvme0).
This will only work on WDC devices supporting this feature.
Results for any other device are undefined.
-n <NAMESPACE ID>, --namespace-id=<NAMESPACE_ID>
Namespace ID; ID of the namespace to resize The broadcast
value 0xffffffff can also be given as all or -1.
-O <OP OPTION>, --op-option=<OP OPTION>
Overprovisioning Option; defaults to 0xF Valid Values:
0x1 - 7% of Original TNVMCAP reported value 0x2 - 28% of Original TNVMCAP
reported value 0x3 - 50% of Original TNVMCAP reported value 0xF - 0% of
Original TNVMCAP reported value (original config) All other values -
reserved
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.
•Resizes namespace 1 to 50% of the original
TNVMCAP reported value:
# nvme wdc namespace-resize /dev/nvme0 -n 1 -O 3
•Resizes namespace 2 to 7% of the original TNVMCAP
reported value:
# nvme wdc namespace-resize /dev/nvme0 --namespace-id=2 --op-option=1
Part of the nvme-user suite.