NVME-RESV-ACQUIRE(1)              NVMe Manual             NVME-RESV-ACQUIRE(1)

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

NVMe                              09/18/2026              NVME-RESV-ACQUIRE(1)