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Commit 6a2e602b by Serge Hallyn
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remove old lxc-create script.

Signed-off-by: 's avatarSerge Hallyn <serge.hallyn@ubuntu.com>
parent dc23c1c8
Showing with 0 additions and 415 deletions
src/lxc/lxc-create.in deleted 100644 → 0
#!/bin/sh
#
# lxc: linux Container library
# Authors:
# Daniel Lezcano <daniel.lezcano@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
. @DATADIR@/lxc/lxc.functions
verify_btrfs() {
if which btrfs >/dev/null 2>&1 && \
btrfs filesystem df "$lxc_path/" >/dev/null 2>&1; then
echo "btrfs"
else
echo "no"
fi
}
verify_zfs() {
if which zfs >/dev/null 2>&1 && zfs get all "$zfsroot" >/dev/null 2>&1; then
echo zfs
else
echo no
fi
}
verify_lvm() {
which vgscan > /dev/null 2>&1
if [ $? -ne 0 ]; then
echo "vgscan not found (is lvm2 installed?)" >&2
echo no
return
fi
grep -q "\<$fstype\>" /proc/filesystems
if [ $? -ne 0 ]; then
echo "$fstype is not listed in /proc/filesystems" >&2
echo no
return
fi
vgscan | grep -q "Found volume group \"$vgname\""
if [ $? -ne 0 ]; then
echo "could not find volume group \"$vgname\"" >&2
echo no
return
fi
echo lvm
}
# if no backingstore is specified, auto-detect if $lxc_path is btrfs or zfs
detect_backingstore() {
if [ `verify_btrfs` = "btrfs" ]; then
echo btrfs
elif [ `verify_zfs` = "zfs" ]; then
echo zfs
else
echo none
fi
}
usage() {
echo "usage: $(basename $0) -n NAME [-f CONFIG_FILE] [-t TEMPLATE] [FS_OPTIONS] --" >&2
echo " [-P lxcpath] [TEMPLATE_OPTIONS]" >&2
echo >&2
echo "where FS_OPTIONS is one of:" >&2
echo " -B none" >&2
echo " -B dir [--dir rootfs_dir]" >&2
echo " -B lvm [--lvname LV_NAME] [--vgname VG_NAME] [--fstype FS_TYPE]" >&2
echo " [--fssize FS_SIZE]" >&2
echo " -B btrfs" >&2
echo " -B zfs [--zfsroot PATH]" >&2
}
help() {
usage
echo >&2
echo "Create a new container on the system." >&2
echo >&2
echo "Options:" >&2
echo " -n NAME specify the name of the container" >&2
echo " -f CONFIG_FILE use an existing configuration file" >&2
echo " -t TEMPLATE use an accessible template script" >&2
echo " -B BACKING_STORE alter the container backing store (default: none)" >&2
echo " --lxcpath path specify an alternate container patch (default: $lxc_path)" >&2
echo " --lvname LV_NAME specify the LVM logical volume name" >&2
echo " (default: container name)" >&2
echo " --dir ROOTFS_DIR specify path for custom rootfs directory location" >&2
echo " --vgname VG_NAME specify the LVM volume group name (default: lxc)" >&2
echo " --fstype FS_TYPE specify the filesystem type (default: ext4)" >&2
echo " --fssize FS_SIZE specify the filesystem size (default: 500M)" >&2
echo " --zfsroot PATH specify the zfs path for lxcpath (default: tank/lxc)" >&2
echo >&2
if [ -z "$lxc_template" ]; then
echo "To see template-specific options, specify a template. For example:" >&2
echo " $(basename $0) -t ubuntu -h" >&2
exit 0
fi
if [ -x ${templatedir}/lxc-$lxc_template ]; then
echo >&2
echo "Template-specific options (TEMPLATE_OPTIONS):" >&2
${templatedir}/lxc-$lxc_template -h
fi
}
usage_err() {
[ -n "$1" ] && echo "$1" >&2
usage
exit 1
}
optarg_check() {
if [ -z "$2" ]; then
usage_err "option '$1' requires an argument"
fi
}
backingstore=_unset
fstype=ext4
fssize=500M
vgname=$lxc_vg
zfsroot=$lxc_zfsroot
custom_rootfs=""
while [ $# -gt 0 ]; do
opt="$1"
shift
case "$opt" in
-h|--help)
help
exit 1
;;
-n|--name)
optarg_check $opt "$1"
lxc_name=$1
shift
;;
-f|--config)
optarg_check $opt "$1"
lxc_config=$1
shift
;;
-P|--lxcpath)
optarg_check $opt "$1"
lxc_path=$1
shift
;;
-t|--template)
optarg_check $opt "$1"
lxc_template=$1
shift
;;
-B|--backingstore)
optarg_check $opt "$1"
backingstore=$1
shift
;;
--dir)
optarg_check $opt "$1"
custom_rootfs=$1
shift
;;
--lvname)
optarg_check $opt "$1"
lvname=$1
shift
;;
--vgname)
optarg_check $opt "$1"
vgname=$1
shift
;;
--fstype)
optarg_check $opt "$1"
fstype=$1
shift
;;
--fssize)
optarg_check $opt "$1"
fssize=$1
shift
;;
--zfsroot)
optarg_check $opt "$1"
zfsroot=$1
shift
;;
--)
break;;
-?)
usage_err "unknown option '$opt'"
;;
-*)
# split opts -abc into -a -b -c
set -- $(echo "${opt#-}" | sed 's/\(.\)/ -\1/g') "$@"
;;
*)
usage
exit 1
;;
esac
done
# If -h or --help was passed into the container, we'll want to cleanup
# afterward
wantedhelp=0
for var in "$@"; do
if [ "$var" = "-h" ] || [ "$var" = "--help" ]; then
help
exit 1
fi
done
if [ -z "$lxc_path" ]; then
echo "$(basename $0): no configuration path defined" >&2
exit 1
fi
if [ ! -r $lxc_path ]; then
echo "$(basename $0): configuration path '$lxc_path' not found" >&2
exit 1
fi
if [ -z "$lxc_name" ]; then
echo "$(basename $0): no container name specified" >&2
usage
exit 1
fi
if [ -z "$lvname" ]; then
lvname="$lxc_name"
fi
if [ -z "$zfsroot" ]; then
zfsroot="tank/lxc"
fi
if [ "$(id -u)" != "0" ]; then
echo "$(basename $0): must be run as root" >&2
exit 1
fi
if [ -n "$custom_rootfs" ] && [ "$backingstore" != "dir" ]; then
echo "--dir is only valid with -B dir"
fi
# detect / verify backing store
case "$backingstore" in
btrfs)
if [ `verify_btrfs` != 'btrfs' ]; then
echo "missing 'btrfs' command or $lxc_path is not btrfs" >&2
exit 1
fi
;;
zfs)
if [ `verify_zfs` != 'zfs' ]; then
echo "missing 'zfs' command or $zfsroot is not zfs" >&2
exit 1
fi
;;
lvm)
if [ `verify_lvm` != 'lvm' ]; then
echo "system is missing 'lvm' support, or VG does not exist." >&2
exit 1
fi
rootdev=/dev/$vgname/$lvname
lvdisplay $rootdev > /dev/null 2>&1
if [ $? -eq 0 ]; then
echo "LV $rootdev already exists" >&2
exit 1
fi
;;
_unset)
backingstore=`detect_backingstore`
;;
dir|lvm|none)
:;;
*)
echo "$(basename $0): '$backingstore' is not known (try 'none', 'dir', 'lvm', 'btrfs', 'zfs')" >&2
usage
exit 1
;;
esac
if [ -d "$lxc_path/$lxc_name" ]; then
echo "$(basename $0): '$lxc_name' already exists" >&2
exit 1
fi
rootfs="$lxc_path/$lxc_name/rootfs"
cleanup() {
if [ "$backingstore" = "lvm" ]; then
umount -l $rootfs || true
lvremove -f $rootdev || true
elif [ "$backingstore" = "btrfs" ]; then
btrfs subvolume delete "$rootfs" || true
elif [ "$backingstore" = "zfs" ]; then
zfs destroy "$zfsroot/$lxc_name" || true
fi
${bindir}/lxc-destroy -n $lxc_name -P "$lxc_path"
echo "$(basename $0): aborted" >&2
exit 1
}
trap cleanup HUP INT TERM
# set up container dir per backing store
if [ "$backingstore" = "zfs" ]; then
zfs create -omountpoint=$lxc_path/$lxc_name/rootfs "$zfsroot/$lxc_name"
elif [ "$backingstore" = "btrfs" ]; then
mkdir "$lxc_path/$lxc_name"
if ! out=$(btrfs subvolume create "$rootfs" 2>&1); then
echo "$(basename $0): failed to create subvolume in $rootfs: $out" >&2
exit 1;
fi
else
mkdir -p $lxc_path/$lxc_name
fi
if [ -z "$lxc_config" ]; then
lxc_config="@SYSCONFDIR@/lxc/default.conf"
echo
echo "$(basename $0): No config file specified, using the default config $lxc_config"
fi
if [ ! -r "$lxc_config" ]; then
echo "$(basename $0): '$lxc_config' configuration file not found" >&2
cleanup
fi
if [ ! -z "$lxc_template" ]; then
# Allow for a path to be provided as the template name
if [ -x "$lxc_template" -a $(echo "$lxc_template" | cut -c 1) = '/' ]; 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
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 "# Template script checksum (SHA-1): $sum" >> $lxc_path/$lxc_name/config
echo "" >> $lxc_path/$lxc_name/config
fi
cat $lxc_config >> $lxc_path/$lxc_name/config
echo "" >> $lxc_path/$lxc_name/config
if [ -n "$custom_rootfs" ]; then
if grep -q "lxc.rootfs" $lxc_path/$lxc_name/config ; then
echo "configuration file already specifies a lxc.rootfs"
cleanup
fi
if [ -d "$custom_rootfs" ]; then
echo "specified rootfs ($custom_rootfs) already exists. Bailing."
cleanup
fi
echo "lxc.rootfs = $custom_rootfs" >> $lxc_path/$lxc_name/config
fi
# Create the fs as needed
if [ "$backingstore" = "lvm" ]; then
[ -d "$rootfs" ] || mkdir $rootfs
lvcreate -L $fssize -n $lvname $vgname || cleanup
udevadm settle
mkfs -t $fstype $rootdev || cleanup
mount -t $fstype $rootdev $rootfs
fi
if [ ! -z "$lxc_template" ]; then
$template_path --path=$lxc_path/$lxc_name --name=$lxc_name "$@"
if [ $? -ne 0 ]; then
echo "$(basename $0): failed to execute template '$lxc_template'" >&2
cleanup
fi
echo "'$lxc_template' template installed"
fi
if [ "$backingstore" = "lvm" ]; then
echo "Unmounting LVM"
umount $rootfs
# TODO: make the templates set this right from the start?
sed -i '/lxc.rootfs/d' $lxc_path/$lxc_name/config
echo "lxc.rootfs = $rootdev" >> $lxc_path/$lxc_name/config
fi
echo "'$lxc_name' created"
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