Date: 13 Aug 2002 00:45:32 -0000 From: David "Siebörger" <drs@rucus.ru.ac.za> To: FreeBSD-gnats-submit@FreeBSD.org Subject: docs/41598: New FAQ entry explaining how a disk can be more than 100% full Message-ID: <20020813004532.13682.qmail@bashir.dsl.ru.ac.za>
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>Number: 41598
>Category: docs
>Synopsis: New FAQ entry explaining how a disk can be more than 100% full
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-doc
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: doc-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Aug 12 17:50:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: David Siebörger
>Release: FreeBSD 4.6-STABLE i386
>Organization:
Rhodes University Computer Users Society
>Environment:
System: FreeBSD bashir.dsl.ru.ac.za 4.6-STABLE FreeBSD 4.6-STABLE #11: Tue Aug 6 10:43:06 SAST 2002 drs@bashir.dsl.ru.ac.za:/usr/obj/usr/src/sys/BASHIR i386
>Description:
This question has been asked on -questions a few times, and I
couldn't find an answer to give from either the FAQ or the Handbook -
feel free to point one out if I'm blind :). So here's my attempt at
an answer, in the form of an FAQ entry.
>How-To-Repeat:
su to root, fill a partition and run df.
>Fix:
--- book.sgml.diff begins here ---
--- doc/en_US.ISO8859-1/books/faq/book.sgml.orig Tue Aug 13 02:15:11 2002
+++ doc/en_US.ISO8859-1/books/faq/book.sgml Tue Aug 13 02:31:39 2002
@@ -6176,6 +6176,28 @@
describing how to do this.</para>
</answer>
</qandaentry>
+
+ <qandaentry>
+ <question id="disk-more-than-full">
+ <para>How is it possible for a partition to be more than 100%
+ full?</para>
+ </question>
+
+ <answer>
+ <para>A portion of each UFS partition (8%, by default) is
+ reserved for use by the operating system and the root user.
+ <command>df</command> does not count that space when
+ calculating the <literal>Capacity</literal> column, so it can
+ exceed 100%. Also, you'll notice that the
+ <literal>Blocks</literal> column is always greater than the
+ sum of the <literal>Used</literal> and
+ <literal>Avail</literal> columns, usually by a factor of
+ 8%.</para>
+
+ <para>For more details, look up the <option>-m</option> option
+ in &man.tunefs.8;.</para>
+ </answer>
+ </qandaentry>
</qandaset>
</chapter>
--- book.sgml.diff ends here ---
>Release-Note:
>Audit-Trail:
>Unformatted:
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