+ <refsect2>
+ <title>REMOVE-TAGS</title>
+ <cmdsynopsis>
+ <command>remove-tags</command>
+ <arg choice="opt">--from <replaceable>file</replaceable></arg>
+ <arg choice="req"><replaceable>nodename</replaceable></arg>
+ <arg choice="req"
+ rep="repeat"><replaceable>tag</replaceable></arg>
+ </cmdsynopsis>
+
+ <para>
+ Remove tags from the given node. If any of the tags are not
+ existing on the node, the entire operation will abort.
+ </para>
+
+ <para>
+ If the <option>--from</option> option is given, the list of
+ tags will be extended with the contents of that file (each
+ line becomes a tag). In this case, there is not need to pass
+ tags on the command line (if you do, both sources will be
+ used). A file name of - will be interpreted as stdin.
+ </para>
+ </refsect2>
+
+ <refsect2>
+ <title>VOLUMES</title>
+
+ <cmdsynopsis>
+ <command>volumes</command>
+ <arg>--no-headers</arg>
+ <arg>--human-readable</arg>
+ <arg>--separator=<replaceable>SEPARATOR</replaceable></arg>
+ <arg>--output=<replaceable>FIELDS</replaceable></arg>
+ <sbr>
+ <arg rep="repeat"><replaceable>node</replaceable></arg>
+ </cmdsynopsis>
+
+ <para>
+ Lists all logical volumes and their physical disks from the node(s)
+ provided.
+ </para>
+
+ <para>
+ The <option>--no-headers</option> option will skip the initial
+ header line. The <option>--separator</option> option takes an
+ argument which denotes what will be used between the output
+ fields. Both these options are to help scripting.
+ </para>
+
+ <para>
+ The units used to display the numeric values in the output
+ varies, depending on the options given. By default, the values
+ will be formatted in the most appropriate unit. If the
+ <option>--separator</option> option is given, then the values
+ are shown in mebibytes to allow parsing by scripts. In both
+ cases, the <option>--units</option> option can be used to
+ enforce a given output unit.
+ </para>
+
+ <para>
+ The <option>-o</option> option takes a comma-separated list of
+ output fields. The available fields and their meaning are:
+ <variablelist>
+ <varlistentry>
+ <term>node</term>
+ <listitem>
+ <simpara>the node name on which the volume exists</simpara>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>phys</term>
+ <listitem>
+ <simpara>the physical drive (on which the LVM physical
+ volume lives)</simpara>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>vg</term>
+ <listitem>
+ <simpara>the volume group name</simpara>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>name</term>
+ <listitem>
+ <simpara>the logical volume name</simpara>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>size</term>
+ <listitem>
+ <simpara>the logical volume size</simpara>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>instance</term>
+ <listitem>
+ <simpara>The name of the instance to which this volume
+ belongs, or (in case it's an orphan volume) the
+ character <quote>-</quote></simpara>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+
+ <para>
+ Example:
+ <screen>
+# gnt-node volumes node5.example.com
+Node PhysDev VG Name Size Instance
+node1.example.com /dev/hdc1 xenvg instance1.example.com-sda_11000.meta 128 instance1.example.com
+node1.example.com /dev/hdc1 xenvg instance1.example.com-sda_11001.data 256 instance1.example.com
+ </screen>
+ </para>
+ </refsect2>
+
+ <refsect2>
+ <title>POWERCYCLE</title>
+
+ <cmdsynopsis>
+ <command>powercycle</command>
+ <arg><option>--confirm</option></arg>
+ <arg><option>--force</option></arg>
+ <arg choice="req"><replaceable>node</replaceable></arg>
+ </cmdsynopsis>
+
+ <para>
+ This commands (tries to) forcefully reboot a node. It is a
+ command that can be used if the node environemnt is broken,
+ such that the admin can no longer login over ssh, but the
+ ganeti node daemon is still working.
+ </para>
+
+ <para>
+ Note that this command is not guaranteed to work; it depends
+ on the hypervisor how effective is the reboot attempt. For
+ Linux, this command require that the kernel option
+ <literal>CONFIG_MAGIC_SYSRQ</literal> is enabled.
+ </para>
+
+ <para>
+ The <option>--yes</option> option can be used to skip
+ confirmation, while the <option>--force</option> option is
+ needed if the target node is the master node.
+ </para>
+