diff options
Diffstat (limited to 'src/migration-scripts/container/0-to-1')
| -rw-r--r--[-rwxr-xr-x] | src/migration-scripts/container/0-to-1 | 102 |
1 files changed, 45 insertions, 57 deletions
diff --git a/src/migration-scripts/container/0-to-1 b/src/migration-scripts/container/0-to-1 index 6b282e082..99102a5e6 100755..100644 --- a/src/migration-scripts/container/0-to-1 +++ b/src/migration-scripts/container/0-to-1 @@ -1,77 +1,65 @@ -#!/usr/bin/env python3 +# Copyright 2022-2024 VyOS maintainers and contributors <maintainers@vyos.io> # -# Copyright (C) 2022 VyOS maintainers and contributors +# 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 program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 2 or later as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, +# 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 General Public License for more details. +# 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 General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. +# 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/>. # T4870: change underlaying container filesystem from vfs to overlay import os import shutil -import sys from vyos.configtree import ConfigTree from vyos.utils.process import call -if len(sys.argv) < 2: - print("Must specify file name!") - sys.exit(1) - -file_name = sys.argv[1] - -with open(file_name, 'r') as f: - config_file = f.read() - base = ['container', 'name'] -config = ConfigTree(config_file) - -# Check if containers exist and we need to perform image manipulation -if config.exists(base): - for container in config.list_nodes(base): - # Stop any given container first - call(f'sudo systemctl stop vyos-container-{container}.service') - # Export container image for later re-import to new filesystem. We store - # the backup on a real disk as a tmpfs (like /tmp) could probably lack - # memory if a host has too many containers stored. - image_name = config.return_value(base + [container, 'image']) - call(f'sudo podman image save --quiet --output /root/{container}.tar --format oci-archive {image_name}') -# No need to adjust the strage driver online (this is only used for testing and -# debugging on a live system) - it is already overlay2 when the migration script -# is run during system update. But the specified driver in the image is actually -# overwritten by the still present VFS filesystem on disk. Thus podman still -# thinks it uses VFS until we delete the libpod directory under: -# /usr/lib/live/mount/persistence/container/storage -#call('sed -i "s/vfs/overlay2/g" /etc/containers/storage.conf /usr/share/vyos/templates/container/storage.conf.j2') +def migrate(config: ConfigTree) -> None: + # Check if containers exist and we need to perform image manipulation + if config.exists(base): + for container in config.list_nodes(base): + # Stop any given container first + call(f'sudo systemctl stop vyos-container-{container}.service') + # Export container image for later re-import to new filesystem. We store + # the backup on a real disk as a tmpfs (like /tmp) could probably lack + # memory if a host has too many containers stored. + image_name = config.return_value(base + [container, 'image']) + call(f'sudo podman image save --quiet --output /root/{container}.tar --format oci-archive {image_name}') -base_path = '/usr/lib/live/mount/persistence/container/storage' -for dir in ['libpod', 'vfs', 'vfs-containers', 'vfs-images', 'vfs-layers']: - if os.path.exists(f'{base_path}/{dir}'): - shutil.rmtree(f'{base_path}/{dir}') + # No need to adjust the strage driver online (this is only used for testing and + # debugging on a live system) - it is already overlay2 when the migration script + # is run during system update. But the specified driver in the image is actually + # overwritten by the still present VFS filesystem on disk. Thus podman still + # thinks it uses VFS until we delete the libpod directory under: + # /usr/lib/live/mount/persistence/container/storage + #call('sed -i "s/vfs/overlay2/g" /etc/containers/storage.conf /usr/share/vyos/templates/container/storage.conf.j2') -# Now all remaining information about VFS is gone and we operate in overlayfs2 -# filesystem mode. Time to re-import the images. -if config.exists(base): - for container in config.list_nodes(base): - # Export container image for later re-import to new filesystem - image_name = config.return_value(base + [container, 'image']) - image_path = f'/root/{container}.tar' - call(f'sudo podman image load --quiet --input {image_path}') + base_path = '/usr/lib/live/mount/persistence/container/storage' + for dir in ['libpod', 'vfs', 'vfs-containers', 'vfs-images', 'vfs-layers']: + if os.path.exists(f'{base_path}/{dir}'): + shutil.rmtree(f'{base_path}/{dir}') - # Start any given container first - call(f'sudo systemctl start vyos-container-{container}.service') + # Now all remaining information about VFS is gone and we operate in overlayfs2 + # filesystem mode. Time to re-import the images. + if config.exists(base): + for container in config.list_nodes(base): + # Export container image for later re-import to new filesystem + image_name = config.return_value(base + [container, 'image']) + image_path = f'/root/{container}.tar' + call(f'sudo podman image load --quiet --input {image_path}') - # Delete temporary container image - if os.path.exists(image_path): - os.unlink(image_path) + # Start any given container first + call(f'sudo systemctl start vyos-container-{container}.service') + # Delete temporary container image + if os.path.exists(image_path): + os.unlink(image_path) |