<?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_shell_snap.8">

<refmeta>
	<refentrytitle>vfs_shell_snap</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_shell_snap</refname>
	<refpurpose>
		Shell script callouts for snapshot creation and deletion
	</refpurpose>
</refnamediv>

<refsynopsisdiv>
	<cmdsynopsis>
		<command>vfs objects = shell_snap</command>
	</cmdsynopsis>
</refsynopsisdiv>

<refsect1>
	<title>DESCRIPTION</title>

	<para>This VFS module is part of the
	<citerefentry><refentrytitle>samba</refentrytitle>
	<manvolnum>8</manvolnum></citerefentry> suite.</para>

	<para>
		The <command>vfs_shell_snap</command> VFS provides shell-script
		callouts for snapshot creation and deletion operations issued
		by remote clients using the File Server Remote VSS Protocol
		(FSRVP).
	</para>

	<para>
		The following shell callouts may be configured in smb.conf:
	</para>
	<para>
		<smbconfoption name="shell_snap:check path command"></smbconfoption>
		<itemizedlist>
			<listitem><para>
				Called when an FSRVP client wishes to check
				whether a given share supports snapshot
				create/delete requests.
			</para></listitem>
			<listitem><para>
				The command is called with a single
				<parameter>share_path</parameter> argument.
			</para></listitem>
			<listitem><para>
				The command must return 0 if
				<parameter>share_path</parameter> is capable of
				being snapshotted.
			</para></listitem>
		</itemizedlist>
	</para>
	<para>
		<smbconfoption name="shell_snap:create command"></smbconfoption>
		<itemizedlist>
			<listitem><para>
				Called when an FSRVP client wishes to create
				a snapshot.
			</para></listitem>
			<listitem><para>
				The command is called with a single
				<parameter>share_path</parameter> argument.
			</para></listitem>
			<listitem><para>
				The command must return 0 status if the
				snapshot was successfully taken.
			</para></listitem>
			<listitem><para>
				The command must output the path of the newly
				created snapshot to stdout.
			</para></listitem>
		</itemizedlist>
	</para>
	<para>
		<smbconfoption name="shell_snap:delete command"></smbconfoption>
		<itemizedlist>
			<listitem><para>
				Called when an FSRVP client wishes to delete
				a snapshot.
			</para></listitem>
			<listitem><para>
				The command is called with
				<parameter>base_share_path</parameter> and
				<parameter>snapshot_share_path</parameter>
				arguments.
			</para></listitem>
			<listitem><para>
				The command must return 0 status if the
				snapshot was successfully removed.
			</para></listitem>
		</itemizedlist>
		All commands are executed as the authenticated FSRVP client
		user.
	</para>

	<para>
		This module is stackable.
	</para>
</refsect1>

<refsect1>
	<title>CONFIGURATION</title>

	<programlisting>
		<smbconfsection name="[share]"/>
		<smbconfoption name="vfs objects">shell_snap</smbconfoption>
		<smbconfoption name="shell_snap:check path command">
			snap_check_path.sh</smbconfoption>
		<smbconfoption name="shell_snap:create command">
			snap_create.sh</smbconfoption>
		<smbconfoption name="shell_snap:delete command">
			snap_delete.sh</smbconfoption>
	</programlisting>

	<para>
		Samba's FSRVP server must be configured in the [global] section:
	</para>

	<programlisting>
		<smbconfsection name="[global]"/>
		<smbconfoption name="rpc_daemon:fssd">fork</smbconfoption>
		<smbconfoption name="registry shares">yes</smbconfoption>
		<smbconfoption name="include">registry</smbconfoption>
	</programlisting>
</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>
