<para>Once you have the Lustre file system up and running, you can use the
procedures in this section to perform these basic Lustre administration
tasks.</para>
- <section xml:id="dbdoclet.50438194_42877">
+ <section xml:id="dbdoclet.mount_by_label">
<title>
<indexterm>
<primary>operations</primary>
<replaceable>/dev/long_mountpoint_name</replaceable>
</screen>
</section>
- <section xml:id="dbdoclet.50438194_24122">
+ <section xml:id="dbdoclet.starting_lustre">
<title>
<indexterm>
<primary>operations</primary>
</listitem>
</orderedlist>
</section>
- <section xml:id="dbdoclet.50438194_84876">
+ <section xml:id="dbdoclet.mounting_server">
<title>
<indexterm>
<primary>operations</primary>
</itemizedlist>
</section>
</section>
- <section xml:id="dbdoclet.50438194_88980">
+ <section xml:id="dbdoclet.set_get_lustre_params">
<title>
<indexterm>
<primary>operations</primary>
<itemizedlist>
<listitem>
<para>When creating a file system, use mkfs.lustre. See
- <xref linkend="dbdoclet.50438194_17237" />below.</para>
+ <xref linkend="dbdoclet.tuning_params_mkfs_lustre" />below.</para>
</listitem>
<listitem>
<para>When a server is stopped, use tunefs.lustre. See
- <xref linkend="dbdoclet.50438194_55253" />below.</para>
+ <xref linkend="dbdoclet.setting_param_tunefs" />below.</para>
</listitem>
<listitem>
<para>When the file system is running, use lctl to set or retrieve
Lustre parameters. See
- <xref linkend="dbdoclet.50438194_51490" />and
- <xref linkend="dbdoclet.50438194_63247" />below.</para>
+ <xref linkend="dbdoclet.setting_param_with_lctl" />and
+ <xref linkend="dbdoclet.reporting_current_param" />below.</para>
</listitem>
</itemizedlist>
- <section xml:id="dbdoclet.50438194_17237">
+ <section xml:id="dbdoclet.tuning_params_mkfs_lustre">
<title>Setting Tunable Parameters with
<literal>mkfs.lustre</literal></title>
<para>When the file system is first formatted, parameters can simply be
<literal>mkfs.lustre</literal>, see
<xref linkend="systemconfigurationutilities" />.</para>
</section>
- <section xml:id="dbdoclet.50438194_55253">
+ <section xml:id="dbdoclet.setting_param_tunefs">
<title>Setting Parameters with
<literal>tunefs.lustre</literal></title>
<para>If a server (OSS or MDS) is stopped, parameters can be added to an
<literal>tunefs.lustre</literal>, see
<xref linkend="systemconfigurationutilities" />.</para>
</section>
- <section xml:id="dbdoclet.50438194_51490">
+ <section xml:id="dbdoclet.setting_param_with_lctl">
<title>Setting Parameters with
<literal>lctl</literal></title>
<para>When the file system is running, the
<note>
<para>The <literal>lctl list_param</literal> command enables users to
list all parameters that can be set. See
- <xref linkend="dbdoclet.50438194_88217" />.</para>
+ <xref linkend="dbdoclet.list_params" />.</para>
</note>
<para>For more details about the
<literal>lctl</literal> command, see the examples in the sections below
osc.myth-OST0004-osc.max_dirty_mb=32
</screen>
</section>
- <section xml:id="dbdoclet.50438194_64195">
+ <section xml:id="dbdoclet.setting_permanent_params">
<title>Setting Permanent Parameters</title>
<para>Use <literal>lctl set_param -P</literal> or
<literal>lctl conf_param</literal> command to set permanent parameters.
provides an interactive list of available parameters.
</para></note>
</section>
- <section xml:id="dbdoclet.50438194_88217">
+ <section xml:id="dbdoclet.list_params">
<title>Listing Parameters</title>
<para>To list Lustre or LNet parameters that are available to set, use
the
oss# lctl list_param obdfilter.lustre-OST0000
</screen>
</section>
- <section xml:id="dbdoclet.50438194_63247">
+ <section xml:id="dbdoclet.reporting_current_param">
<title>Reporting Current Parameter Values</title>
<para>To report current Lustre parameter values, use the
<literal>lctl get_param</literal> command with this syntax:</para>
<xref xmlns:xlink="http://www.w3.org/1999/xlink"
linkend="configuringfailover" />.</para>
</section>
- <section xml:id="dbdoclet.50438194_70905">
+ <section xml:id="dbdoclet.erasing_filesystem">
<title>
<indexterm>
<primary>operations</primary>
them.</para>
</note>
</section>
- <section xml:id="dbdoclet.50438194_16954">
+ <section xml:id="dbdoclet.reclaiming_reserved_disk_space">
<title>
<indexterm>
<primary>operations</primary>
5%.</para>
</warning>
</section>
- <section xml:id="dbdoclet.50438194_69998">
+ <section xml:id="dbdoclet.replacing_existing_ost_mdt">
<title>
<indexterm>
<primary>operations</primary>
For more information on removing a MDT, see
<xref linkend='lustremaint.rmremotedir' />.</para>
</section>
- <section xml:id="dbdoclet.50438194_30872">
+ <section xml:id="dbdoclet.identifying_file_objects">
<title>
<indexterm>
<primary>operations</primary>
<screen>lctl list_param [-R] [-F] <replaceable>obdtype.obdname.*</replaceable></screen>
<para>For example, to list all of the parameters on the MDT:</para>
<screen>oss# lctl list_param -RF mdt</screen>
- <para>For more information on using lctl to set temporary and permanent parameters, see <xref linkend="dbdoclet.50438194_51490"/>.</para>
+ <para>For more information on using lctl to set temporary and permanent parameters, see <xref linkend="dbdoclet.setting_param_with_lctl"/>.</para>
<para><emphasis role="bold">Network Configuration</emphasis></para>
<informaltable frame="all">
<tgroup cols="2">
<entry>
<para> Sets a permanent configuration parameter for any device via the MGS. This command must be run on the MGS node.</para>
<para>All writeable parameters under <literal>lctl list_param</literal> (e.g. <literal>lctl list_param -F osc.*.* | grep</literal> =) can be permanently set using <literal>lctl conf_param</literal>, but the format is slightly different. For <literal>conf_param</literal>, the device is specified first, then the obdtype. Wildcards are not supported. Additionally, failover nodes may be added (or removed), and some system-wide parameters may be set as well (sys.at_max, sys.at_min, sys.at_extra, sys.at_early_margin, sys.at_history, sys.timeout, sys.ldlm_timeout). For system-wide parameters, <replaceable>device</replaceable> is ignored.</para>
- <para>For more information on setting permanent parameters and <literal>lctl conf_param</literal> command examples, see <xref linkend="dbdoclet.50438194_64195"/> (Setting Permanent Parameters).</para>
+ <para>For more information on setting permanent parameters and <literal>lctl conf_param</literal> command examples, see <xref linkend="dbdoclet.setting_permanent_params"/> (Setting Permanent Parameters).</para>
</entry>
</row>
<row>
defined by this command.</para>
<para>When the file system is created, parameters can simply be added as a
<literal>--param</literal> option to the <literal>mkfs.lustre</literal> command. See <xref
- linkend="dbdoclet.50438194_17237"/>.</para>
+ linkend="dbdoclet.tuning_params_mkfs_lustre"/>.</para>
<informaltable frame="all">
<tgroup cols="3">
<colspec colname="c1" colwidth="1*"/>