git-annex-migrate - switch data to different backend
git annex migrate [path ...]
git annex migrate --update
Changes the specified annexed files to use the default key-value
backend (or the one specified with --backend). Only files whose
content is currently present are migrated.
Note that the content is also still stored using the old keys
after migration. When possible, hard links are used to avoid that taking up
extra disk space. Use git annex unused to find and remove the old
keys.
Normally, nothing will be done to specified files that are already
using the new backend. However, if a backend changes the information it uses
to construct a key, this can also be used to migrate files to use the new
key format.
- --update
- This updates the local repository for migrations that were performed
elsewhere. Only new migrations since the last time this was run will be
performed.
- This does not modify the working tree, but only hard links (or in some
cases copies) annex objects to their new keys.
- git-annex pull and git-annex sync --content automatically do
this, unless the annex.syncmigrations config is set to false.
- Note that older versions of git-annex did not record migrations in a way
that this can use. Migrations performed with those older versions had to
be manually run in each clone of the repository.
- --apply
- This applies all recorded migrations to the local repository. It is the
non-incremental form of --update.
- One situation where this can be useful is when git-annex migrate --update
has been run, but since then un-migrated objects have entered the
repository. Using this option ensures that any such objects get
migrated.
- Note that older versions of git-annex did not record migrations in a way
that this can use. Migrations performed with those older versions had to
be manually run in each clone of the repository.
- --backend
- Specify the new key-value backend to use for migrated data.
- --force
- Force migration of keys that are already using the new backend.
- file matching options
- The git-annex-matching-options(1) can be used to specify files to
migrate.
- Also the
git-annex-common-options(1) can be used.
- --remove-size
- Keys often include the size of their content, which is generally a useful
thing. In fact, this command defaults to adding missing size information
to keys. With this option, the size information is removed instead.
- One use of this option is to convert URL keys that were added by
git-annex addurl --fast to ones that would have been added if that
command was run with the --relaxed option. Eg:
-
git-annex migrate --remove-size --backend=URL somefile
- To add back the size to an URL key, use this:
- git-annex migrate --backend=URL somefile
- --json
- Enable JSON output. This is intended to be parsed by programs that use
git-annex. Each line of output is a JSON object.
- --json-error-messages
- Messages that would normally be output to standard error are included in
the JSON instead.
git-annex(1)
git-annex-upgrade(1)
git-annex-backend(1)
Joey Hess <id@joeyh.name>