- that if you run this command for a remote raid instance
- type, while it is running, it will not be able to shutdown
- the block devices on the primary node, but it will shutdown
- the block devices on the secondary nodes, thus breaking the
- replication.
+ that if you run this command for an instance with a drbd
+ disk template, while it is running, it will not be able to
+ shutdown the block devices on the primary node, but it will
+ shutdown the block devices on the secondary nodes, thus
+ breaking the replication.
+ </para>
+
+ </refsect3>
+
+ <refsect3>
+ <title>GROW-DISK</title>
+ <cmdsynopsis>
+ <command>grow-disk</command>
+ <arg>--no-wait-for-sync</arg>
+ <arg choice="req"><replaceable>instance</replaceable></arg>
+ <arg choice="req"><replaceable>disk</replaceable></arg>
+ <arg choice="req"><replaceable>amount</replaceable></arg>
+ </cmdsynopsis>
+
+ <para>
+ Grows an instance's disk. This is only possible for
+ instances having a <literal>plain</literal> or
+ <literal>drbd</literal> disk template.
+ </para>
+
+ <para>
+ Note that this command only change the block device size; it
+ will not grow the actual filesystems, partitions, etc. that
+ live on that disk. Usually, you will need to:
+ <orderedlist>
+ <listitem>
+ <simpara>use <command>gnt-instance grow-disk</command></simpara>
+ </listitem>
+ <listitem>
+ <simpara>reboot the instance (later, at a convenient
+ time)</simpara>
+ </listitem>
+ <listitem>
+ <simpara>use a filesystem resizer, such as
+ <citerefentry> <refentrytitle>ext2online</refentrytitle>
+ <manvolnum>8</manvolnum> </citerefentry> or
+ <citerefentry> <refentrytitle>xfs_growfs</refentrytitle>
+ <manvolnum>8</manvolnum> </citerefentry> to resize the
+ filesystem, or use <citerefentry>
+ <refentrytitle>fdisk</refentrytitle>
+ <manvolnum>8</manvolnum> </citerefentry> to change the
+ partition table on the disk
+ </simpara>
+ </listitem>
+ </orderedlist>