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eae6d76a36
writing that they are correct for version x is not always precise. But we're working on that also :-) Signed-off-by: Bjoern Jacke <bjacke@samba.org> Reviewed-by: Andrew Bartlett <abartlet@samba.org> Reviewed-by: Garming Sam <garming@catalyst.net.nz>
119 lines
3.3 KiB
XML
119 lines
3.3 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
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<refentry id="vfs_crossrename.8">
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<refmeta>
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<refentrytitle>vfs_crossrename</refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="source">Samba</refmiscinfo>
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<refmiscinfo class="manual">System Administration tools</refmiscinfo>
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<refmiscinfo class="version">&doc.version;</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>vfs_crossrename</refname>
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<refpurpose>server side rename files across filesystem boundaries</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>vfs objects = crossrename</command>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>DESCRIPTION</title>
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<para>This VFS module is part of the
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<citerefentry><refentrytitle>samba</refentrytitle>
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<manvolnum>7</manvolnum></citerefentry> suite.</para>
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<para>The <command>vfs_crossrename</command> VFS module allows
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server side rename operations even if source and target are on
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different physical devices. A "move" in Explorer is usually a
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rename operation if it is inside of a single share or device.
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Usually such a rename operation returns
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NT_STATUS_NOT_SAME_DEVICE and the client has to move the file by
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manual copy and delete operations. If the rename by copy is done by the
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server this can be much more efficient. vfs_crossrename tries to do
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this server-side cross-device rename operation.
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</para>
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<para>There are however limitations that this module currently does not
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solve:</para>
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<variablelist>
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<varlistentry>
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<para>The ACLs of files are not preserved,</para>
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</varlistentry>
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<varlistentry>
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<para>meta data in EAs are not preserved,</para>
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</varlistentry>
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<varlistentry>
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<para>renames of whole subdirectories cannot be done recursively,
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in that case we still return STATUS_NOT_SAME_DEVICE and
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let the client decide what to do,</para>
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</varlistentry>
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<varlistentry>
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<para>rename operations of huge files can cause hangs on the
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client because clients expect a rename operation to
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return fast.</para>
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</varlistentry>
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</variablelist>
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<para>This module is stackable.</para>
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</refsect1>
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<refsect1>
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<title>OPTIONS</title>
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<variablelist>
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<varlistentry>
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<term>crossrename:sizelimit = BYTES</term>
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<listitem>
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<para>server-side cross-device-renames are only done
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for files if the filesize is not larger than the defined
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size in MiB to prevent timeouts. The default sizelimit is
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20 (MiB)
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>EXAMPLES</title>
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<para>To add server-side cross-device renames inside of a share
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for all files sized up to 50MB:</para>
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<programlisting>
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<smbconfsection name="[testshare]"/>
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<smbconfoption name="path">/data/mounts</smbconfoption>
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<smbconfoption name="vfs objects">crossrename</smbconfoption>
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<smbconfoption name="crossrename:sizelimit">50</smbconfoption>
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</programlisting>
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</refsect1>
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<refsect1>
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<title>VERSION</title>
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<para>This man page is part of version &doc.version; of the Samba suite.
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</para>
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</refsect1>
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<refsect1>
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<title>AUTHOR</title>
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<para>The original Samba software and related utilities
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were created by Andrew Tridgell. Samba is now developed
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by the Samba Team as an Open Source project similar
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to the way the Linux kernel is developed.</para>
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</refsect1>
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</refentry>
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