+
+ <para>
+ The <option>-g</option> option will let you specify a volume group
+ different than 'xenvg' for ganeti to use when creating instance disks.
+ This volume group must have the same name on all nodes. Once the
+ cluster is initialized this can be altered by using the
+ <command>modify</command> command. If you don't want to use lvm
+ storage at all use the <option>--no-lvm-storage</option> option.
+ Once the cluster is initialized you can change this setup with the
+ <command>modify</command> command.
+ </para>
+
+ <para>
+ The <option>--master-netdev</option> option is useful for specifying a
+ different interface on which the master will activate its IP address.
+ It's important that all nodes have this interface because you'll need
+ it for a master failover.
+ </para>
+
+ <para>
+ The <option>-m</option> option will let you specify a three byte prefix
+ under which the virtual MAC addresses of your instances will be
+ generated. The prefix must be specified in the format XX:XX:XX and the
+ default is aa:00:00.
+ </para>
+
+ <para>
+ The <option>--no-lvm-storage</option> allows you to initialize the
+ cluster without lvm support. This means that only instances using
+ files as storage backend will be possible to create. Once the cluster
+ is initialized you can change this setup with the
+ <command>modify</command> command.
+ </para>
+
+ <para>
+ The <option>--file-storage-dir</option> option allows you
+ set the directory to use for storing the instance disk
+ files when using file storage as backend for instance disks.
+ </para>
+
+ <para>
+ The <option>--enabled-hypervisors</option> option allows you
+ to set the list of hypervisors that will be enabled for
+ this cluster. Instance hypervisors can only be choosen from
+ the list of enabled hypervisors. Currently, the following
+ hypervisors are available:
+ </para>
+
+ <para>
+ <variablelist>
+ <varlistentry>
+ <term>xen-pvm</term>
+ <listitem>
+ <para>
+ Xen PVM hypervisor
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>xen-hvm</term>
+ <listitem>
+ <para>
+ Xen HVM hypervisor
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>kvm</term>
+ <listitem>
+ <para>
+ Linux KVM hypervisor
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>fake</term>
+ <listitem>
+ <para>
+ fake hypervisor for development/testing
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+
+ <para>
+ Either a single hypervisor name or a comma-separated list of
+ hypervisor names can be specified. If this option is not
+ specified, only the xen-pvm hypervisor is enabled by default.
+ </para>
+
+ <para>
+ With the <option>-t</option> option, the default hypervisor
+ can be set. It has to be a member of the list of enabled
+ hypervisors. If not specified, the first entry on the list of
+ enabled hypervisors will be used by default.
+ </para>
+
+ <para>
+ The <option>--backend</option> option allows you to set
+ the default backend parameters for the cluster. The parameter
+ format is a comma-separated list of key=value pairs with the
+ following supported keys:
+ </para>
+
+ <para>
+ <variablelist>
+ <varlistentry>
+ <term>vcpus</term>
+ <listitem>
+ <para>
+ Number of VCPUs to set for an instance by default, must
+ be an integer, will be set to 1 if no specified.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>memory</term>
+ <listitem>
+ <para>
+ Amount of memory to allocate for an instance by default,
+ can be either an integer or an integer followed by a
+ unit (M for mebibytes and G for gibibytes are
+ supported), will be set to 128M if not specified.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>auto_balance</term>
+ <listitem>
+ <para>
+ Value of the auto_balance flag for instances to use by
+ default, will be set to true if not specified.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+
+ <para>
+ The <option>--hypervisor-parameters</option> option allows you
+ to set default hypervisor specific parameters for the
+ cluster. The format of this option is the name of the
+ hypervisor, followed by a colon and a comma-separated list of
+ key=value pairs. The keys available for each hypervisors are
+ detailed int the <citerefentry>
+ <refentrytitle>gnt-instance</refentrytitle>
+ <manvolnum>8</manvolnum> </citerefentry> man page, in the
+ <command>add</command> command.
+ </para>
+