<listitem>
<para>Mount the MDT.</para>
<note>
- <para condition='l24'>Mount all MDTs if multiple MDTs are
- present.</para>
+ <para>Mount all MDTs if multiple MDTs are present.</para>
</note>
</listitem>
<listitem>
client# mount -t lustre mgsnode@tcp0:/bar /mnt/bar
</screen>
</section>
- <section xml:id="dbdoclet.lfsmkdir" condition='l24'>
+ <section xml:id="dbdoclet.lfsmkdir">
<title>
<indexterm>
<primary>operations</primary>
<secondary>remote directory</secondary>
- </indexterm>Creating a sub-directory on a given MDT</title>
- <para>Lustre 2.4 enables individual sub-directories to be serviced by
- unique MDTs. An administrator can allocate a sub-directory to a given MDT
- using the command:</para>
+ </indexterm>Creating a sub-directory on a specific MDT</title>
+ <para>It is possible to create individual directories, along with its
+ files and sub-directories, to be stored on specific MDTs. To create
+ a sub-directory on a given MDT use the command:
+ </para>
<screen>
client# lfs mkdir –i
<replaceable>mdt_index</replaceable>
<warning>
<para>An administrator can allocate remote sub-directories to separate
MDTs. Creating remote sub-directories in parent directories not hosted on
- MDT0 is not recommended. This is because the failure of the parent MDT
+ MDT0000 is not recommended. This is because the failure of the parent MDT
will leave the namespace below it inaccessible. For this reason, by
- default it is only possible to create remote sub-directories off MDT0. To
- relax this restriction and enable remote sub-directories off any MDT, an
- administrator must issue the following command on the MGS:
+ default it is only possible to create remote sub-directories off MDT0000.
+ To relax this restriction and enable remote sub-directories off any MDT,
+ an administrator must issue the following command on the MGS:
<screen>mgs# lctl conf_param <replaceable>fsname</replaceable>.mdt.enable_remote_dir=1</screen>
For Lustre filesystem 'scratch', the command executed is:
<screen>mgs# lctl conf_param scratch.mdt.enable_remote_dir=1</screen>
<literal>enable_remote_dir_gid</literal>. For example, setting this
parameter to the 'wheel' or 'admin' group ID allows users with that GID
to create and delete remote and striped directories. Setting this
- parameter to <literal>-1</literal> on MDT0 to permanently allow any
+ parameter to <literal>-1</literal> on MDT0000 to permanently allow any
non-root users create and delete remote and striped directories.
On the MGS execute the following command:
<screen>mgs# lctl conf_param <replaceable>fsname</replaceable>.mdt.enable_remote_dir_gid=-1</screen>
software tries the first one, and if that fails, it tries the second
one.)</para>
<para>Two options to
- <literal>mkfs.lustre</literal> can be used to specify failover nodes.
- Introduced in Lustre software release 2.0, the
+ <literal>mkfs.lustre</literal> can be used to specify failover nodes. The
<literal>--servicenode</literal> option is used to specify all service NIDs,
including those for primary nodes and failover nodes. When the
<literal>--servicenode</literal> option is used, the first service node to
load the target device becomes the primary service node, while nodes
corresponding to the other specified NIDs become failover locations for the
- target device. An older option,
- <literal>--failnode</literal>, specifies just the NIDS of failover nodes.
- For more information about the
+ target device. An older option, <literal>--failnode</literal>, specifies
+ just the NIDs of failover nodes. For more information about the
<literal>--servicenode</literal> and
<literal>--failnode</literal> options, see
<xref xmlns:xlink="http://www.w3.org/1999/xlink"