Create an lxc-clone script to clone containers. It should probably
be factored into helpers and then enhanced, in particular to convert
between LVM and non-LVM containers, create non-snapshot LVM clones,
support loopback devices, and, when stable enough, to use
overlayfs, btrfs, etc.
But this is a start.
Signed-off-by: Serge Hallyn serge.hal...@ubuntu.com
---
configure.ac |1 +
lxc.spec.in |1 +
src/lxc/Makefile.am |1 +
src/lxc/lxc-clone.in | 208 ++
4 files changed, 211 insertions(+), 0 deletions(-)
create mode 100644 src/lxc/lxc-clone.in
diff --git a/configure.ac b/configure.ac
index 6cce1b4..0d4f4c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -157,6 +157,7 @@ AC_CONFIG_FILES([
src/lxc/lxc-setuid
src/lxc/lxc-version
src/lxc/lxc-create
+ src/lxc/lxc-clone
src/lxc/lxc-destroy
])
diff --git a/lxc.spec.in b/lxc.spec.in
index 452493d..f22cd06 100644
--- a/lxc.spec.in
+++ b/lxc.spec.in
@@ -78,6 +78,7 @@ rm -rf %{buildroot}
%{_bindir}/*
%attr(4111,root,root) %{_bindir}/lxc-attach
%attr(4111,root,root) %{_bindir}/lxc-create
+%attr(4111,root,root) %{_bindir}/lxc-clone
%attr(4111,root,root) %{_bindir}/lxc-start
%attr(4111,root,root) %{_bindir}/lxc-netstat
%attr(4111,root,root) %{_bindir}/lxc-unshare
diff --git a/src/lxc/Makefile.am b/src/lxc/Makefile.am
index 9def453..1dfca00 100644
--- a/src/lxc/Makefile.am
+++ b/src/lxc/Makefile.am
@@ -70,6 +70,7 @@ bin_SCRIPTS = \
lxc-setuid \
lxc-version \
lxc-create \
+ lxc-clone \
lxc-destroy
bin_PROGRAMS = \
diff --git a/src/lxc/lxc-clone.in b/src/lxc/lxc-clone.in
new file mode 100644
index 000..91944a0
--- /dev/null
+++ b/src/lxc/lxc-clone.in
@@ -0,0 +1,208 @@
+#!/bin/bash
+
+#
+# lxc: linux Container library
+
+# Authors:
+# Serge Hallyn serge.hal...@ubuntu.com
+# Daniel Lezcano daniel.lezc...@free.fr
+
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+usage() {
+echo usage: lxc-clone -o orig -n new [-s] [-h] [-L fssize] [-v
vgname]
+}
+
+help() {
+usage
+echo
+echo creates a lxc system object.
+echo
+echo Options:
+echo orig: name of the original container
+echo new : name of the new container
+echo -s : make the new rootfs a snapshot of the original
+echo fssize : size if creating a new fs. By default, 2G
+echo vgname : lvm volume group name, lxc by default
+}
+
+shortoptions='ho:n:sL:v:'
+longoptions='help,orig:,name:,snapshot,fssize,vgname'
+lxc_path=/var/lib/lxc
+bindir=/usr/bin
+snapshot=no
+lxc_size=2G
+lxc_vg=lxc
+
+getopt=$(getopt -o $shortoptions --longoptions $longoptions -- $@)
+if [ $? != 0 ]; then
+usage
+exit 1;
+fi
+
+eval set -- $getopt
+
+while true; do
+case $1 in
+ -h|--help)
+ help
+ exit 1
+ ;;
+ -s|--snapshot)
+ shift
+ snapshot=yes
+ ;;
+ -o|--orig)
+ shift
+ lxc_orig=$1
+ shift
+ ;;
+ -L|--fssize)
+ shift
+ lxc_size=$1
+ shift
+ ;;
+ -v|--vgname)
+ shift
+ lxc_vg=$1
+ shift
+ ;;
+ -n|--new)
+ shift
+ lxc_new=$1
+ shift
+ ;;
+--)
+ shift
+ break;;
+*)
+ echo $1
+ usage
+ exit 1
+ ;;
+esac
+done
+
+if [ -z $lxc_path ]; then
+echo no configuration path defined !
+exit 1
+fi
+
+if [ ! -r $lxc_path ]; then
+echo configuration path '$lxc_path' not found
+exit 1
+fi
+
+if [ -z $lxc_orig ]; then
+echo no original container name specified
+usage
+exit 1
+fi
+
+if [ -z $lxc_new ]; then
+echo no new container name specified
+usage
+exit 1
+fi
+
+if [ $(id -u) != 0 ]; then
+ echo This command has to be run as root
+ exit 1
+fi
+
+if [ ! -r $lxc_path ]; then
+echo no configuration path defined !
+exit 1
+fi
+
+if [ ! -d $lxc_path/$lxc_orig ]; then
+echo '$lxc_orig' does not exist
+
