mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-08-29 20:11:16 +00:00
Tiny fix for virt-lxc-convert: we are setting memory values in bytes, while free may give us values in a different unit by default: force free to output bytes with -b flag.
128 lines
3.4 KiB
Bash
128 lines
3.4 KiB
Bash
#!/bin/sh
|
|
# lxc_native.c: LXC native configuration import
|
|
#
|
|
# Copyright (c) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
|
|
#
|
|
# 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, see
|
|
# <http://www.gnu.org/licenses/>.
|
|
#
|
|
# Author: Cedric Bosdonnat <cbosdonnat@suse.com>
|
|
|
|
handler_cleanup()
|
|
{
|
|
if test "$conf_dir"; then
|
|
# Remove the temporary config
|
|
rm -r "$conf_dir"
|
|
fi
|
|
}
|
|
trap handler_cleanup INT EXIT
|
|
|
|
show_help()
|
|
{
|
|
cat << EOF
|
|
$0 /path/to/lxc/config/file
|
|
|
|
Wrapper around virsh domxml-from-native to ease conversion of LXC
|
|
containers configuration to libvirt domain XML.
|
|
EOF
|
|
}
|
|
|
|
if test $# != 1; then
|
|
show_help
|
|
exit 1
|
|
fi
|
|
|
|
if test "$1" = "--help" || test "$1" = "-h"; then
|
|
show_help
|
|
exit $?
|
|
fi
|
|
|
|
conf=$1
|
|
|
|
conf_dir=$(mktemp --tmpdir -d virt-lxc-convert-XXX)
|
|
conf_new=$conf_dir/config
|
|
|
|
cp "$conf" "$conf_new"
|
|
|
|
# Do we have lxc.mount, and is it pointing to a readable file?
|
|
fstab=$(sed -n '/lxc.mount[[:space:]]*=/ s/[[:space:]]*=[[:space:]]*/=/p' \
|
|
"$conf_new" | cut -f 2 -d '=')
|
|
if test -r "$fstab"; then
|
|
sed 's/^lxc.mount[[:space:]]*=.*$//' "$conf_new" >"${conf_new}.tmp"
|
|
mv "${conf_new}.tmp" "${conf_new}"
|
|
sed 's/^\([^#]\)/lxc.mount.entry = \1/' "$fstab" >>"${conf_new}"
|
|
fi
|
|
|
|
memory=$(free -b | sed -n '/Mem:/s/ \+/ /gp' | cut -f 2 -d ' ')
|
|
default_tmpfs="size=$((memory/2))"
|
|
|
|
# Do we have tmpfs without size param?
|
|
lineno=0
|
|
while read line; do
|
|
lineno=$(expr $lineno + 1)
|
|
has_rel_size=false
|
|
case $line in
|
|
lxc.mount.entry[[:space:]]*=[[:space:]]*tmpfs[[:space:]]*)
|
|
is_tmpfs=true
|
|
;;
|
|
*)
|
|
is_tmpfs=false
|
|
;;
|
|
esac
|
|
|
|
# We only care about tmpfs mount entries here
|
|
if ! $is_tmpfs; then
|
|
continue
|
|
fi
|
|
|
|
case $line in
|
|
*size=[0-9][0-9]*%*)
|
|
has_rel_size=true
|
|
has_size=true
|
|
;;
|
|
*size=*)
|
|
has_size=true
|
|
;;
|
|
*)
|
|
has_size=false
|
|
;;
|
|
esac
|
|
|
|
# Add the default size here (50%) if no size is given
|
|
if ! $has_size; then
|
|
last_option_match="\([[:space:]]*[0-9][[:space:]]*[0-9][::space::]*$\)"
|
|
sed "${lineno}s/$last_option_match/,$default_tmpfs\1/" \
|
|
"$conf_new" >"${conf_new}.tmp"
|
|
mv "${conf_new}.tmp" "${conf_new}"
|
|
fi
|
|
|
|
# Convert relative sizes
|
|
if $has_rel_size; then
|
|
percent=$(echo "$line" | sed 's/.*size=\([0-9][0-9]*\)%.*/\1/')
|
|
size="$((memory*percent/100))"
|
|
sed "${lineno}s/size=[0-9]*%/size=${size}/" \
|
|
"$conf_new" >"${conf_new}.tmp"
|
|
mv "${conf_new}.tmp" "${conf_new}"
|
|
fi
|
|
done < "$conf_new"
|
|
|
|
# Do we have any memory limit set?
|
|
mem_limit=$(grep 'lxc.cgroup.memory.limit_in_bytes[[:space:]]*=' $conf_new)
|
|
if test -z "$mem_limit"; then
|
|
echo "lxc.cgroup.memory.limit_in_bytes = $memory" >> "$conf_new"
|
|
fi
|
|
|
|
virsh -c lxc:/// domxml-from-native lxc-tools $conf_new
|
|
exit $?
|