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lxc-create: Store template information in config

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Change lxc-create to add the name of the template, checksum and any parameters
to the container's configuration.
This makes it easier to debug and figure out exactly how a container was built.

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
This commit is contained in:
Stéphane Graber 2012-11-30 16:55:54 -05:00
parent 61435768cd
commit fa0e6e1bf4
1 changed files with 23 additions and 13 deletions
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36
src/lxc/lxc-create.in
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@ -281,7 +281,29 @@ if [ ! -r "$lxc_config" ]; then
exit 1
fi
cp $lxc_config $lxc_path/$lxc_name/config
# Allow for a path to be provided as the template name
if [ -x $lxc_template ]; then
template_path=$lxc_template
else
template_path=${templatedir}/lxc-$lxc_template
fi
if ! [ -x "$template_path" ]; then
echo "$(basename $0): unknown template '$lxc_template'" >&2
cleanup
fi
if [ ! -z $lxc_template ]; then
sum=$(sha1sum $template_path | cut -d ' ' -f1)
echo "# Template used to create this container: $lxc_template" >> $lxc_path/$lxc_name/config
if [ -n "$*" ]; then
echo "# Parameters passed to the template: $*" >> $lxc_path/$lxc_name/config
fi
echo "# Checksum of the template script (SHA-1): $sum" >> $lxc_path/$lxc_name/config
echo "" >> $lxc_path/$lxc_name/config
fi
cat $lxc_config >> $lxc_path/$lxc_name/config
if [ -n "$custom_rootfs" ]; then
if grep -q "lxc.rootfs" $lxc_path/$lxc_name/config ; then
@ -301,18 +323,6 @@ if [ $backingstore = "lvm" ]; then
fi
if [ ! -z $lxc_template ]; then
# Allow for a path to be provided as the template name
if [ -x $lxc_template ]; then
template_path=$lxc_template
else
template_path=${templatedir}/lxc-$lxc_template
fi
if ! [ -x "$template_path" ]; then
echo "$(basename $0): unknown template '$lxc_template'" >&2
cleanup
fi
$template_path --path=$lxc_path/$lxc_name --name=$lxc_name $*
if [ $? -ne 0 ]; then
echo "$(basename $0): failed to execute template '$lxc_template'" >&2