Merge branch 'remove_broken_default_storage' into 'master'

Remove broken "default" storage initialiser

See merge request gitlab-org/gitlab!68096

config/initializers/1_settings.rb

@@ -761,13 +761,6 @@ Settings.gitlab_kas['internal_url'] ||= 'grpc://localhost:8153'
 #
 Settings['repositories'] ||= Settingslogic.new({})
 Settings.repositories['storages'] ||= {}
-unless Settings.repositories.storages['default']
-  Settings.repositories.storages['default'] ||= {}
-  # We set the path only if the default storage doesn't exist, in case it exists
-  # but follows the pre-9.0 configuration structure. `6_validations.rb` initializer
-  # will validate all storages and throw a relevant error to the user if necessary.
-  Settings.repositories.storages['default']['path'] ||= Settings.gitlab['user_home'] + '/repositories/'
-end
 
 Settings.repositories.storages.each do |key, storage|
   Settings.repositories.storages[key] = Gitlab::GitalyClient::StorageSettings.new(storage)

doc/administration/repository_storage_paths.md

@@ -120,17 +120,23 @@ For compatibility reasons `gitlab.yml` has a different structure than Omnibus Gi
 
 1. [Restart GitLab](restart_gitlab.md#installations-from-source) for the changes to take effect.
 
+1. [Configure where new repositories are stored](#configure-where-new-repositories-are-stored).
+
 **For Omnibus installations**
 
-Edit `/etc/gitlab/gitlab.rb` by appending the rest of the paths to the default one:
+1. Edit `/etc/gitlab/gitlab.rb` by appending the rest of the paths to the default one:
 
-```ruby
-git_data_dirs({
+   ```ruby
+   git_data_dirs({
     "default" => { "path" => "/var/opt/gitlab/git-data" },
     "storage1" => { "path" => "/mnt/storage1/git-data" },
     "storage2" => { "path" => "/mnt/storage2/git-data" }
-})
-```
+   })
+   ```
+
+1. [Restart GitLab](restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect.
+
+1. [Configure where new repositories are stored](#configure-where-new-repositories-are-stored).
 
 NOTE:
 Omnibus stores the repositories in a `repositories` subdirectory of the `git-data` directory.
@@ -153,6 +159,17 @@ The higher the weight of a given repository storage path relative to other repos
 paths, the more often it is chosen. That is,
 `(storage weight) / (sum of all weights) * 100 = chance %`.
 
+By default, if repository weights have not been configured earlier:
+
+- `default` is weighted `100`.
+- All other storages are weighted `0`.
+
+NOTE:
+If all storage weights are `0` (for example, when `default` does not exist), GitLab attempts to
+create new repositories on `default`, regardless of the configuration or if `default` exists.
+See [the tracking issue](https://gitlab.com/gitlab-org/gitlab/-/issues/36175) for more information.
+information.
+
 ## Move repositories
 
 To move a repository to a different repository storage (for example, from `default` to `storage2`), use the