GIT-LFS-MIGRATE(1)

NAME
git-lfs-migrate - Migrate history to or from git-lfs

SYNOPSIS
git lfs migrate mode [options] [--] [branch ...]

MODES

•   info Show information about repository size.

•   import Convert large Git objects to LFS pointers.

OPTIONS

-I paths --include=paths
    See INCLUDE AND EXCLUDE.

-X paths --exclude=paths
    See INCLUDE AND EXCLUDE.

--include-ref=refname
    See [INCLUDE AND EXCLUDE (REFS)].

--exclude-ref=refname
    See [INCLUDE AND EXCLUDE (REFS)].

--everything
    See [INCLUDE AND EXCLUDE (REFS)].

[branch ...]
    Migrate only the set of branches listed. If not given, git-lfs-migrate(1) will migrate the currently checked out branch.

    If any of --include-ref or --exclude-ref are given, the checked out branch will not be appended, but branches given explicitly will be appended.

  INFO
The 'info' mode has these additional options:

•   --above=<size> Only count files whose individual filesize is above the given size. 'size' may be specified as a number of bytes, or a number followed by a storage unit, e.g., "1b", "20 MB", "3 TiB", etc.

    If a set of files sharing a common extension has no files in that set whose individual size is above the given --above no files no entry for that set will be shown.

•   --top=<n> Only include the top 'n' entries, ordered by how many total files match the given pathspec.

•   --unit=<unit> Format the number of bytes in each entry as a quantity of the storage unit provided. Valid units include:

    * b, kib, mib, gib, tib, pib - for IEC storage units
    * b, kb, mb, gb, tb, pb - for SI storage units

    If a --unit is not specified, the largest unit that can fit the number of counted bytes as a whole number quantity is chosen.

  IMPORT
The 'import' mode migrates large objects present in the Git history to pointer files tracked and stored with Git LFS. It supports all the core 'migrate' options and these additional ones:

•   --verbose Print the commit oid and filename of migrated files to STDOUT.

If --include or --exclude (-I, -X, respectively) are given, the .gitattributes will be modified to include any new filepath patterns as given by those flags.

If neither of those flags are given, the gitattributes will be incrementally modified to include new filepath extensions as they are rewritten in history.

INCLUDE AND EXCLUDE
You can configure Git LFS to only migrate tree entries whose pathspec matches the include glob and does not match the exclude glob, to reduce total migration time or to only migrate part of your repo. Specify multiple patterns using the comma as the delimiter.

Pattern matching is done as given to be functionally equivalent to pattern matching as in .gitattributes.

INCLUDE AND EXCLUDE (REFS)
You can configure Git LFS to only migrate commits reachable by references include by --include-ref and not reachable by --exclude-ref.

        D---E---F
       /         \

A---B------C refs/heads/my-feature \ \ \ refs/heads/master \ refs/remotes/origin/master

In the above configuration, the following commits are reachable by each ref:

refs/heads/master: C, B, A refs/heads/my-feature: F, E, D, B, A refs/remote/origin/master: A

The following configuration:

--include-ref=refs/heads/my-feature --include-ref=refs/heads/master --exclude-ref=refs/remotes/origin/master

Would, therefore, include commits: F, E, D, C, B, but exclude commit A.

The presence of flag --everything indicates that all local references should be migrated.

EXAMPLES

  Migrate unpushed commits
The migrate command's most common use case is to convert large git objects to LFS before pushing your commits. By default, it only scans commits that don't exist on any remote.

First, run git lfs migrate info to list the file types taking up the most space in your repository.

    $ git lfs migrate info
    migrate: Fetching remote refs: ..., done
    migrate: Sorting commits: ..., done
    migrate: Examining commits: 100% (1/1), done
    *.mp3   284 MB    1/1 files(s)  100%
    *.pdf   42 MB     8/8 files(s)  100%
    *.psd   9.8 MB  15/15 files(s)  100%
    *.ipynb 6.9 MB    6/6 files(s)  100%
    *.csv   5.8 MB    2/2 files(s)  100%

Now, you can run git lfs migrate import to convert some file types to LFS:

    $ git lfs migrate import --include="*.mp3,*.psd"
    migrate: Fetching remote refs: ..., done
    migrate: Sorting commits: ..., done
    migrate: Rewriting commits: 100% (1/1), done
      master    d2b959babd099fe70da1c1512e2475e8a24de163 -> 136e706bf1ae79643915c134e17a6c933fd53c61
    migrate: Updating refs: ..., done

  Migrate local history
You can also migrate the entire history of your repository:

    # Check for large files in your local master branch
    $ git lfs migrate info --include-ref=master

    # Check for large files in every branch
    $ git lfs migrate info --everything

The same flags will work in import mode:

    # Convert all zip files in your master branch
    $ git lfs migrate import --include-ref=master --include="*.zip"

    # Convert all zip files in every local branch
    $ git lfs migrate import --everything --include="*.zip"

Note: This will require a force push to any existing Git remotes.

SEE ALSO
Part of the git-lfs(1) suite.