Subversion to GitHub migration steps using GitHub-provided tools.

svn_github_migration.sh

# SSH to GitHub appliance and go to your working directory where you do migrations

# Type your Subversion username + Enter
read SVN_USER
# type your Subversion password + Enter
read SVN_PASSWORD
# type your GitHub username + Enter
read GIT_USER
# type your GitHub **Personal Access Token** + Enter
read GIT_TOKEN

# Type URL of Subversion repository to migrate
read SVN_REPO_URL

SVN_REPO_NAME="${SVN_REPO_URL##*/}"
GIT_REPO="${SVN_REPO_NAME}.git"

# Import the repository
~/git-import-svn-raw-1.10 --user "${SVN_USER}" --password "${SVN_PASSWORD}" \
  "${SVN_REPO_URL}" "${GIT_REPO}"

# Create authors files
sed -e 's/,\(.*\)/,\1@dxc.com,\1/' "${GIT_REPO}/git-import/raw-authors.csv" > "${SVN_REPO_NAME}_authors.csv"

# Check authors file if it has empty values that are visible as "" and fix that.
# Usually surronding lines have the right values so you can copy/replace the faulty line with a good one
# vim "${SVN_REPO_NAME}_authors.csv"

# Rewrite authors file
git-import-rewrite --flavor svn --authors "${SVN_REPO_NAME}_authors.csv" "${GIT_REPO}"

# Deal with LARGE FILES

# Check if repository contains files bigger than 100MB limit
REPOSITORY="${SVN_REPO_URL}" SVN_USERNAME="${SVN_USER}" SVN_PASSWORD="${SVN_PASSWORD}" ~/svn_sizer.sh

# ACTION:
# If repo has any files bigger than limit - request size limit change for that repo

# Do the LFS things
cd "${GIT_REPO}"
git lfs install
git lfs migrate info --everything

# Migrate binary files using their patterns, e.g.
# git lfs migrate import --everything --include='*.war,*.jar,*.lar'
git lfs migrate import --everything --include='<comma-separate list of patterns>'

# List files that are now LFS
git lfs ls-files

# type GitHub repository URL; repository must have been already created!
read GIT_REPO_URL

# Inject creadentials to Git repository URL
GIT_REPO_URL="$(echo "${GIT_REPO_URL}" | sed "s,//,//${GIT_USER}:${GIT_TOKEN}@,")"

git push --mirror --force "${GIT_REPO_URL}"

git lfs migrate info was only checking current branch. To check all branches: git lfs migrate info --everything. Gist updated.