2.0 KiB
% ATOMIC(1) Atomic Man Pages % Shishir Mahajan % October 2015
NAME
atomic-migrate - Migrate container's content from one backend storage to another.
SYNOPSIS
atomic migrate COMMAND [OPTIONS]
atomic migrate allows the user to easily migrate images, volumes, and containers from one version of atomic to another. With this command, users can quickly save all their data from the current atomic instance, change the container's content storage backend, and then import all their old data to the new system.
COMMANDS
export
export command will export all the current images, volumes, and containers to the specified directory (/var/lib/atomic/migrate by default), in the /images, /volumes, /containers subdirectories.
import
import command will import images, volumes, and containers from the specified directory (/var/lib/atomic/migrate by default) into the new atomic instance.
export OPTIONS
-h --help Print usage statement
--graph Root of the docker runtime. If you are running docker at the default location (/var/lib/docker), you don't need to pass this flag. However if you are running docker at a custom location. This flag must be set.
--dir Directory in which to temporarily store the files (can be an existing directory, or the command will create one). If no directory is specified, /var/lib/atomic/migrate would be used as default.
import OPTIONS
-h --help Print usage statement
--graph Root of the docker runtime. If you are running docker at the default location (/var/lib/docker), you don't need to pass this flag. However if you are running docker at a custom location. This flag must be set.
--dir Directory from which to import the files (images, containers and volumes). If this flag is not set atomic migrate will assume the import location to be /var/lib/atomic/migrate. Whether you set this flag or use the default, the directory must be present for the import to happen successfully.
HISTORY
October 2015, Originally compiled by Shishir Mahajan (shishir dot mahajan at redhat dot com)