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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 17:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 17:47:29 +0000
commit4f5791ebd03eaec1c7da0865a383175b05102712 (patch)
tree8ce7b00f7a76baa386372422adebbe64510812d4 /docs-xml/manpages/vfs_prealloc.8.xml
parentInitial commit. (diff)
downloadsamba-4f5791ebd03eaec1c7da0865a383175b05102712.tar.xz
samba-4f5791ebd03eaec1c7da0865a383175b05102712.zip
Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<?xml version="1.0" encoding="iso-8859-1"?>
+<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
+<refentry id="vfs_prealloc.8">
+
+<refmeta>
+ <refentrytitle>vfs_prealloc</refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo class="source">Samba</refmiscinfo>
+ <refmiscinfo class="manual">System Administration tools</refmiscinfo>
+ <refmiscinfo class="version">&doc.version;</refmiscinfo>
+</refmeta>
+
+
+<refnamediv>
+ <refname>vfs_prealloc</refname>
+ <refpurpose>preallocate matching files to a predetermined size</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+ <cmdsynopsis>
+ <command>vfs objects = prealloc</command>
+ </cmdsynopsis>
+</refsynopsisdiv>
+
+<refsect1>
+ <title>DESCRIPTION</title>
+
+ <para>This VFS module is part of the
+ <citerefentry><refentrytitle>samba</refentrytitle>
+ <manvolnum>7</manvolnum></citerefentry> suite.</para>
+
+ <para>The <command>vfs_prealloc</command> VFS module preallocates
+ files to a specified size each time a new file is created. This
+ is useful in environments where files are of a predetermined
+ size will be written to a disk subsystem where extending file
+ allocations is expensive. </para>
+
+ <para>This module is stackable.</para>
+
+</refsect1>
+
+
+<refsect1>
+ <title>OPTIONS</title>
+
+ <variablelist>
+
+ <varlistentry>
+ <term>prealloc:EXT = BYTES</term>
+ <listitem>
+ <para>Preallocate all files with the extension EXT to
+ the size specified by BYTES.
+ </para>
+
+ <para>The following suffixes may be applied to BYTES:</para>
+ <itemizedlist>
+ <listitem><para><command>K</command> - BYTES is a number of kilobytes</para></listitem>
+ <listitem><para><command>M</command> - BYTES is a number of megabytes</para></listitem>
+ <listitem><para><command>G</command> - BYTES is a number of gigabytes</para></listitem>
+ </itemizedlist>
+
+ </listitem>
+ </varlistentry>
+
+ </variablelist>
+</refsect1>
+
+<refsect1>
+ <title>EXAMPLES</title>
+
+ <para>A process writes TIFF files to a Samba share, and the
+ is known these files will almost always be around 4 megabytes
+ (4194304 bytes): </para>
+
+<programlisting>
+ <smbconfsection name="[frames]"/>
+ <smbconfoption name="path">/data/frames</smbconfoption>
+ <smbconfoption name="vfs objects">prealloc</smbconfoption>
+ <smbconfoption name="prealloc:tiff">4M</smbconfoption>
+</programlisting>
+</refsect1>
+
+<refsect1>
+ <title>CAVEATS</title>
+ <para><command>vfs_prealloc</command> is not supported on all
+ platforms and filesystems. Currently only XFS filesystems on
+ Linux and IRIX are supported.
+ </para>
+</refsect1>
+
+<refsect1>
+ <title>VERSION</title>
+ <para>This man page is part of version &doc.version; of the Samba suite.
+ </para>
+</refsect1>
+
+<refsect1>
+ <title>AUTHOR</title>
+
+ <para>The original Samba software and related utilities
+ were created by Andrew Tridgell. Samba is now developed
+ by the Samba Team as an Open Source project similar
+ to the way the Linux kernel is developed.</para>
+
+</refsect1>
+
+</refentry>