nvme-resv-acquire(1)

# nvme-resv-acquire(1) Manual Page

## NAME

nvme-resv-acquire - Acquire an nvme reservation

## SYNOPSIS

    nvme [<global-options>] resv acquire <device>
                            [--namespace-id=<nsid> | -n <nsid>]
                            [--crkey=<crkey> | -c <crkey>]
                            [--prkey=<prkey> | -p <prkey>]
                            [--rtype=<rtype> | -t <rtype>]
                            [--racqa=<racqa> | -a <racqa>]
                            [--iekey | -i]

## DESCRIPTION

The Reservation Acquire command is used to acquire a reservation on a namespace, preempt a reservation held on a namespace, and abort a reservation held on a namespace.

The bare nvme resv-acquire form (without a space) still works as a deprecated alias and will be removed in a future major version. New scripts should use nvme resv acquire instead.

## OPTIONS

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

  Override the nsid field. If using the admin character device, this parameter is required.

-c <crkey>
--crkey=<crkey>

  Current Reservation Key: The field specifies the current reservation key associated with the host. If the IEKEY bit is set to ‘1’ in the command, then the CRKEY check succeeds regardless of the value in this field.

-p <prkey>
--prkey=<prkey>

  Preempt Reservation Key: If the Reservation Acquire Action is set to 001b (i.e., Preempt) or 010b (i.e., Preempt and Abort), then this field specifies the reservation key to be unregistered from the namespace. For all other Reservation Acquire Action values, this field is reserved.

-t <rtype>
--rtype=<rtype>

  Reservation Type: This field specifies the type of reservation to be created.

  Value | Definition
  0h | Reserved
  1h | Write Exclusive Reservation
  2h | Exclusive Access Reservation
  3h | Write Exclusive - Registrants Only Reservation
  4h | Exclusive Access - Registrants Only Reservation
  5h | Write Exclusive - All Registrants Reservation
  6h | Exclusive Access - All Registrants Reservation
  07h-FFh | Reserved

-a <racqa>
--racqa=<racqa>

  Reservation Acquire Action: This field specifies the action that is performed by the command.

  Value | Definition
  0 | Acquire
  1 | Preempt
  2 | Preempt and Abort
  3-7 | Reserved

-i
--iekey

  Ignore Existing Key: If this bit is set to a 1, then the Current Reservation Key (CRKEY) check is disabled and the command shall succeed regardless of the CRKEY field value.

  Indicator option, defaults to 0.

## 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

No examples yet

## NVME

Part of the nvme-user suite