- <literal> df [-i] [-h] [--pool|-p <replaceable>fsname</replaceable>[.<replaceable>pool</replaceable>] [<replaceable>path</replaceable>] </literal>
- </entry>
- <entry>
- <para>Report file system disk space usage or inode usage (with <literal>-i</literal>) of each MDT/OST or a subset of OSTs if a pool is specified with <literal>-p</literal>. By default, prints the usage of all mounted Lustre file systems. Otherwise, if path is specified, prints only the usage of that file system. If <literal>-h</literal> is given, the output is printed in human-readable format, using SI base-2 suffixes for <emphasis role="bold">M</emphasis>ega-, <emphasis role="bold">G</emphasis>iga-, <emphasis role="bold">T</emphasis>era-, <emphasis role="bold">P</emphasis>eta-, or <emphasis role="bold">E</emphasis>xabytes.</para>
+ <literal> df [-i] [-h] [--pool|-p
+ <replaceable>fsname</replaceable>[.<replaceable>pool</replaceable>]
+ [<replaceable>path</replaceable>] [--lazy]</literal>
+ </entry>
+ <entry>
+ <para>Use <literal>-i</literal> to report file system disk space usage or inode
+ usage of each MDT or OST or, if a pool is specified with the <literal>-p</literal>
+ option, a subset of OSTs.</para>
+ <para>By default, the usage of all mounted Lustre file systems is reported. If the
+ <literal>path</literal> option is included, only the usage for the specified
+ file system is reported. If the <literal>-h</literal> option is included, the
+ output is printed in human-readable format, using SI base-2 suffixes for <emphasis
+ role="bold">M</emphasis>ega-, <emphasis role="bold">G</emphasis>iga-, <emphasis
+ role="bold">T</emphasis>era-, <emphasis role="bold">P</emphasis>eta-, or
+ <emphasis role="bold">E</emphasis>xabytes.</para>
+ <para>If the <literal>--lazy</literal> option is specified, any OST that is
+ currently disconnected from the client will be skipped. Using the
+ <literal>--lazy</literal> option prevents the <literal>df</literal> output from
+ being blocked when an OST is offline. Only the space on the OSTs that can
+ currently be accessed are returned. The <literal>llite.*.lazystatfs</literal>
+ tunable can be enabled to make this the default behaviour for all
+ <literal>statfs()</literal> operations.</para>