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+<H1>Administration Reference</H1>
+<HR><P ALIGN="center"> <A HREF="../index.htm"><IMG SRC="../books.gif" BORDER="0" ALT="[Return to Library]"></A> <A HREF="auarf002.htm#ToC"><IMG SRC="../toc.gif" BORDER="0" ALT="[Contents]"></A> <A HREF="auarf266.htm"><IMG SRC="../prev.gif" BORDER="0" ALT="[Previous Topic]"></A> <A HREF="#Bot_Of_Page"><IMG SRC="../bot.gif" BORDER="0" ALT="[Bottom of Topic]"></A> <A HREF="auarf268.htm"><IMG SRC="../next.gif" BORDER="0" ALT="[Next Topic]"></A> <A HREF="auarf284.htm#HDRINDEX"><IMG SRC="../index.gif" BORDER="0" ALT="[Index]"></A> <P>
+<P>
+<H2><A NAME="HDRVOS_LOCK" HREF="auarf002.htm#ToC_281">vos lock</A></H2>
+<A NAME="IDX5761"></A>
+<A NAME="IDX5762"></A>
+<A NAME="IDX5763"></A>
+<A NAME="IDX5764"></A>
+<A NAME="IDX5765"></A>
+<P><STRONG>Purpose</STRONG>
+<P>Locks a VLDB volume entry
+<P><STRONG>Synopsis</STRONG>
+<PRE><B>vos lock -id</B> <<VAR>volume name or ID</VAR>> [<B>-cell</B> <<VAR>cell name</VAR>>] [<B>-noauth</B>]
+ [<B>-localauth</B>] [<B>-verbose</B>] [<B>-help</B>]
+
+<B>vos lo -i</B> <<VAR>volume name or ID</VAR>> [<B>-c</B> <<VAR>cell name</VAR>>] [<B>-n</B>] [<B>-l</B>] [<B>-v</B>] [<B>-h</B>]
+</PRE>
+<P><STRONG>Description</STRONG>
+<P>The <B>vos lock</B> command locks the Volume Location Database (VLDB)
+entry for the indicated volume, blocking any operation that requires a write
+to that entry. The lock applies to all of the volume versions
+associated with the entry, not just the one specified with the <B>-id</B>
+argument.
+<P>To unlock a single VLDB entry, use the <B>vos unlock</B>
+command. To unlock several entries, or all locked entries in the VLDB,
+use the <B>vos unlockvldb</B> command.
+<P><STRONG>Cautions</STRONG>
+<P>Do not use this command in normal circumstances. It is useful for
+guaranteeing that the volume stays unchanged when there is reason to believe
+that volume operations cannot properly lock VLDB volume entries as they
+normally do to synchronize with one another.
+<P><STRONG>Options</STRONG>
+<DL>
+<P><DT><B>-id
+</B><DD>Specifies either the complete name or volume ID number of a volume of the
+any of the three types.
+<P><DT><B>-cell
+</B><DD>Names the cell in which to run the command. Do not combine this
+argument with the <B>-localauth</B> flag. For more details, see the
+introductory <B>vos</B> reference page.
+<P><DT><B>-noauth
+</B><DD>Assigns the unprivileged identity <B>anonymous</B> to the
+issuer. Do not combine this flag with the <B>-localauth</B>
+flag. For more details, see the introductory <B>vos</B> reference
+page.
+<P><DT><B>-localauth
+</B><DD>Constructs a server ticket using a key from the local
+<B>/usr/afs/etc/KeyFile</B> file. The <B>vos</B> command
+interpreter presents it to the Volume Server and Volume Location Server during
+mutual authentication. Do not combine this flag with the
+<B>-cell</B> argument or <B>-noauth</B> flag. For more details,
+see the introductory <B>vos</B> reference page.
+<P><DT><B>-verbose
+</B><DD>Produces on the standard output stream a detailed trace of the
+command's execution. If this argument is omitted, only warnings
+and error messages appear.
+<P><DT><B>-help
+</B><DD>Prints the online help for this command. All other valid options
+are ignored.
+</DL>
+<P><STRONG>Examples</STRONG>
+<P>The following command locks the VLDB entry for
+<B>user.terry</B>.
+<PRE> % <B>vos lock user.terry</B>
+
+</PRE>
+<P><STRONG>Privilege Required</STRONG>
+<P>The issuer must be listed in the <B>/usr/afs/etc/UserList</B> file on
+the machine specified with the <B>-server</B> argument and on each
+database server machine. If the <B>-localauth</B> flag is included,
+the issuer must instead be logged on to a server machine as the local
+superuser <B>root</B>.
+<P><STRONG>Related Information</STRONG>
+<P><A HREF="auarf252.htm#HDRVOS_INTRO">vos</A>
+<P><A HREF="auarf278.htm#HDRVOS_UNLOCK">vos unlock</A>
+<P><A HREF="auarf279.htm#HDRVOS_UNLOCKVLDB">vos unlockvldb</A>
+<P>
+<HR><P ALIGN="center"> <A HREF="../index.htm"><IMG SRC="../books.gif" BORDER="0" ALT="[Return to Library]"></A> <A HREF="auarf002.htm#ToC"><IMG SRC="../toc.gif" BORDER="0" ALT="[Contents]"></A> <A HREF="auarf266.htm"><IMG SRC="../prev.gif" BORDER="0" ALT="[Previous Topic]"></A> <A HREF="#Top_Of_Page"><IMG SRC="../top.gif" BORDER="0" ALT="[Top of Topic]"></A> <A HREF="auarf268.htm"><IMG SRC="../next.gif" BORDER="0" ALT="[Next Topic]"></A> <A HREF="auarf284.htm#HDRINDEX"><IMG SRC="../index.gif" BORDER="0" ALT="[Index]"></A> <P>
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