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| [{-D|--disk-parameters} *disk-template*:*disk-param*=*value* [,*disk-param*=*value*...]]

The ``-D (--disk-parameters)`` option allows you to set the default disk

template parameters at cluster level. The format used for this option is

similar to the one use by the  ``-H`` option: the disk template name

must be specified first, followed by a colon and by a comma-separated

list of key-value pairs. These parameters can only be specified at

cluster and node group level; the cluster-level parameter are inherited

by the node group at the moment of its creation, and can be further

modified at node group level using the **gnt-group**(8) command. 

List of disk parameters available for the **drbd** template:

resync-rate

    Re-synchronization rate, expressed in KiB/s

data-stripes

    Number of stripes to use for data LVs

meta-stripes

    Number of stripes to use for meta LVs

disk-barriers

    What kind of barriers to **disable** for disks. It can either assume

    the value "n", meaning no barrier disabled, or a non-empty string

    containing a subset of the characters "bfd". "b" means disable disk

    barriers, "f" means disable disk flushes, "d" disables disk drains

meta-barriers

    Boolean value indicating whether the meta barriers should be

    disabled (True) or not (False).

metavg

    String containing the name of the default LVM volume group for DRBD

    metadata. By default, it is set to ``xenvg``. It can be overridden

    during the instance creation process by using the ``metavg`` key of

    the ``--disk`` parameter.

disk-custom

    String containing additional parameters to be appended to the

    arguments list of ``drbdsetup disk``.

net-custom

    String containing additional parameters to be appended to the

    arguments list of ``drbdsetup net``.

List of parameters available for the **plain** template:

stripes

    Number of stripes to use for new LVs

| [{-D|--disk-parameters} *disk-template*:*disk-param*=*value* [,*disk-param*=*value*...]]

``-D (--disk-parameters)``, ``--nic-parameters``, ``-C

(--candidate-pool-size)``, ``--maintain-node-health``,

``--prealloc-wipe-disks``, ``--uid-pool``, ``--node-parameters``,

``--master-netdev``, ``--master-netmask`` and

``--use-external-mip-script`` options are described in the **init**

command.

| [{-D|--disk-parameters} *disk-template*:*disk-param*=*value* [,*disk-param*=*value*...]]

The ``-D (--disk-parameters)`` option allows you to set the disk

parameters for the node group; please see the section about

**gnt-cluster add** in **gnt-cluster**(8) for more information about

disk parameters

| [{-D|--disk-parameters} *disk-template*:*disk-param*=*value* [,*disk-param*=*value*...]]

The ``--node-parameters``, ``--alloc-policy`` and ``-D

(--disk-parameters)`` options are documented in the **add** command

above.