129 lines
3.0 KiB
HTML
129 lines
3.0 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of SWITCH_ROOT</TITLE>
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</HEAD><BODY>
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<H1>SWITCH_ROOT</H1>
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Section: System Administration (8)<BR>Updated: June 2009<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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switch_root - switch to another filesystem as the root of the mount tree
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>switch_root</B>
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[<B>-hV</B>]
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<P>
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<B>switch_root</B>
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<I>newroot</I>
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<I>init</I>
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[<I>arg</I>...]
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<B>switch_root</B>
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moves already mounted /proc, /dev, /sys and /run to
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<I>newroot</I>
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and makes
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<I>newroot</I>
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the new root filesystem and starts
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<I>init</I>
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process.
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<P>
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<B>WARNING: switch_root removes recursively all files and directories on the current root filesystem.</B>
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<P>
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<A NAME="lbAE"> </A>
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<H2>OPTIONS</H2>
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<DL COMPACT>
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<DT id="1"><B>-h, --help</B><DD>
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Display help text and exit.
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<DT id="2"><B>-V, --version</B><DD>
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Display version information and exit.
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<P>
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</DL>
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<A NAME="lbAF"> </A>
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<H2>RETURN VALUE</H2>
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<B>switch_root</B>
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returns 0 on success and 1 on failure.
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<P>
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<A NAME="lbAG"> </A>
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<H2>NOTES</H2>
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switch_root will fail to function if
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<B>newroot</B>
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is not the root of a mount. If you want to switch root into a directory that
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does not meet this requirement then you can first use a bind-mounting trick to
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turn any directory into a mount point:
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<P>
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<PRE>
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<DL COMPACT><DT id="3"><DD>mount --bind $DIR $DIR
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</DL>
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</PRE>
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<P>
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<A NAME="lbAH"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?2+chroot">chroot</A></B>(2),
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<B><A HREF="/cgi-bin/man/man2html?8+init">init</A></B>(8),
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<B><A HREF="/cgi-bin/man/man2html?8+mkinitrd">mkinitrd</A></B>(8),
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<B><A HREF="/cgi-bin/man/man2html?8+mount">mount</A></B>(8)
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<A NAME="lbAI"> </A>
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<H2>AUTHORS</H2>
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<PRE>
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Peter Jones <<A HREF="mailto:pjones@redhat.com">pjones@redhat.com</A>>
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Jeremy Katz <<A HREF="mailto:katzj@redhat.com">katzj@redhat.com</A>>
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Karel Zak <<A HREF="mailto:kzak@redhat.com">kzak@redhat.com</A>>
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</PRE>
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<A NAME="lbAJ"> </A>
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<H2>AVAILABILITY</H2>
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The switch_root command is part of the util-linux package and is available from
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<A HREF="https://www.kernel.org/pub/linux/utils/util-linux/.">https://www.kernel.org/pub/linux/utils/util-linux/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="4"><A HREF="#lbAB">NAME</A><DD>
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<DT id="5"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="6"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="7"><A HREF="#lbAE">OPTIONS</A><DD>
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<DT id="8"><A HREF="#lbAF">RETURN VALUE</A><DD>
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<DT id="9"><A HREF="#lbAG">NOTES</A><DD>
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<DT id="10"><A HREF="#lbAH">SEE ALSO</A><DD>
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<DT id="11"><A HREF="#lbAI">AUTHORS</A><DD>
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<DT id="12"><A HREF="#lbAJ">AVAILABILITY</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:06:16 GMT, March 31, 2021
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