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lxc: linux Container library

(C) Copyright Canonical Inc. 2007, 2008

Authors:
Serge Hallyn <serge.hallyn at ubuntu.com>

This library is free software; you can redistribute it and/or
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<refentry>

  <docinfo><date>@LXC_GENERATE_DATE@</date></docinfo>

  <refmeta>
    <refentrytitle>lxc-snapshot</refentrytitle>
    <manvolnum>1</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>lxc-snapshot</refname>

    <refpurpose>
      Snapshot an existing container.
    </refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis>
      <command>lxc-snapshot</command>
      <arg choice="req">-n, --name <replaceable>name</replaceable></arg>
      <arg choice="opt">-c, --comment <replaceable>file</replaceable></arg>
    </cmdsynopsis>
    <cmdsynopsis>
      <command>lxc-snapshot</command>
      <arg choice="req">-n, --name <replaceable>name</replaceable></arg>
      <arg choice="req">-d, -destroy <replaceable>snapshot-name</replaceable></arg>
    </cmdsynopsis>
    <cmdsynopsis>
      <command>lxc-snapshot</command>
      <arg choice="req">-n, --name <replaceable>name</replaceable></arg>
      <arg choice="req">-L, --list </arg>
      <arg choice="opt">-C, --showcomments </arg>
    </cmdsynopsis>
    <cmdsynopsis>
      <command>lxc-snapshot</command>
      <arg choice="req">-n, --name <replaceable>name</replaceable></arg>
      <arg choice="req">-r, -restore <replaceable>snapshot-name</replaceable></arg>
      <arg choice="opt">-N, --newname <replaceable> newname</replaceable></arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para>
      <command>lxc-snapshot</command> creates, lists, and restores
      container snapshots.
    </para>
    <para>
      Snapshots are stored as snapshotted containers under the container's configuration path. For instance, if the container's configuration path is <filename>/var/lib/lxc</filename> and the container is <filename>c1</filename>, then the first snapshot will be stored as container <filename>snap0</filename> under the path <filename>/var/lib/lxc/c1/snaps</filename>.
      If <filename>/var/lib/lxcsnaps</filename>, as used by LXC 1.0, already exists, then it will continue to be used.
    </para>
  </refsect1>

  <refsect1>

    <title>Options</title>

    <variablelist>

	  <varlistentry>
	    <term> <option>-c,--comment <replaceable>comment_file</replaceable></option> </term>
	   <listitem>
	    <para> Associate the comment in <replaceable>comment_file</replaceable> with the newly created snapshot.</para>
	   </listitem>
	  </varlistentry>

	  <varlistentry>
	    <term> <option>-d,--destroy snapshot-name</option> </term>
	   <listitem>
	    <para> Destroy the named snapshot.  If the named snapshot is ALL, then all snapshots
	    will be destroyed.</para>
	   </listitem>
	  </varlistentry>

	  <varlistentry>
	    <term> <option>-L,--list </option> </term>
	   <listitem>
	    <para> List existing snapshots. </para>
	   </listitem>
	  </varlistentry>

	  <varlistentry>
	    <term> <option>-C,--showcomments </option> </term>
	   <listitem>
	    <para> Show snapshot comments in the snapshots listings. </para>
	   </listitem>
	  </varlistentry>

	  <varlistentry>
	    <term> <option>-r,--restore snapshot-name</option> </term>
	   <listitem>
	    <para> Restore the named snapshot, meaning a full new container is created which is a copy of the snapshot.</para>
	   </listitem>
	  </varlistentry>

	  <varlistentry>
	    <term> <option>-N, --newname</option> </term>
	   <listitem>
            <para> When restoring a snapshot, the last optional argument if not given explicitly via <command>--newname</command> is the name to use for the restored container.  If the newname is identical to the original name of the container, then the original container will be destroyed and the restored container will take its place. Note that deleting the original snapshot is not possible in the case of overlayfs or zfs backed snapshots.</para>
	   </listitem>
	  </varlistentry>

    </variablelist>

  </refsect1>

  &commonoptions;

  &seealso;

  <refsect1>
    <title>Author</title>
    <para>Serge Hallyn <email>serge.hallyn@ubuntu.com </email></para>
  </refsect1>

</refentry>

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