Removed some useless code, codestyle changes and removed an index

app/models/project.rb

@@ -1432,9 +1432,7 @@ class Project < ActiveRecord::Base
 
   def storage
     @storage ||=
-      if !has_attribute?(:storage_version) # during migration
-        Storage::LegacyProject.new(self)
-      elsif self.storage_version && self.storage_version >= 1
+      if self.storage_version && self.storage_version >= 1
         Storage::HashedProject.new(self)
       else
         Storage::LegacyProject.new(self)
@@ -1442,7 +1440,7 @@ class Project < ActiveRecord::Base
   end
 
   def use_hashed_storage
-    if !self.persisted? && current_application_settings.hashed_storage_enabled
+    if self.new_record? && current_application_settings.hashed_storage_enabled
       self.storage_version = LATEST_STORAGE_VERSION
     end
   end

app/models/storage/hashed_project.rb

@@ -11,14 +11,14 @@ module Storage
     #
     # @return [String] directory where repository is stored
     def base_dir
-      %Q(#{disk_hash[0..1]}/#{disk_hash[2..3]}) if disk_hash
+      "#{disk_hash[0..1]}/#{disk_hash[2..3]}" if disk_hash
     end
 
     # Disk path is used to build repository and project's wiki path on disk
     #
     # @return [String] combination of base_dir and the repository own name without `.git` or `.wiki.git` extensions
     def disk_path
-      %Q(#{base_dir}/#{disk_hash})
+      "#{base_dir}/#{disk_hash}"
     end
 
     def ensure_storage_path_exist

app/views/admin/application_settings/_form.html.haml

@@ -499,7 +499,7 @@
             = f.check_box :hashed_storage_enabled
             Create new projects using hashed storage paths
           .help-block
-            Enable immutable, hash based paths and repository names to store repositories on disk. This prevents
+            Enable immutable, hash-based paths and repository names to store repositories on disk. This prevents
             repositories from having to be moved or renamed when the Project URL changes and may improve disk I/O performance.
             %em (EXPERIMENTAL)
     .form-group

db/migrate/20170802013652_add_storage_fields_to_project.rb

@@ -5,11 +5,9 @@ class AddStorageFieldsToProject < ActiveRecord::Migration
   include Gitlab::Database::MigrationHelpers
 
   DOWNTIME = false
-  disable_ddl_transaction!
 
   def up
     add_column :projects, :storage_version, :integer, limit: 2
-    add_concurrent_index :projects, :storage_version
   end
 
   def down

db/schema.rb

@@ -1226,7 +1226,6 @@ ActiveRecord::Schema.define(version: 20170820100558) do
   add_index "projects", ["pending_delete"], name: "index_projects_on_pending_delete", using: :btree
   add_index "projects", ["runners_token"], name: "index_projects_on_runners_token", using: :btree
   add_index "projects", ["star_count"], name: "index_projects_on_star_count", using: :btree
-  add_index "projects", ["storage_version"], name: "index_projects_on_storage_version", using: :btree
   add_index "projects", ["visibility_level"], name: "index_projects_on_visibility_level", using: :btree
 
   create_table "protected_branch_merge_access_levels", force: :cascade do |t|

spec/models/project_spec.rb

@@ -2389,7 +2389,7 @@ describe Project do
 
         subject { project.rename_repo }
 
-        it { expect{subject}.to raise_error(StandardError) }
+        it { expect { subject }.to raise_error(StandardError) }
       end
     end
   end
@@ -2469,7 +2469,7 @@ describe Project do
 
         subject { project.rename_repo }
 
-        it { expect{subject}.to raise_error(StandardError) }
+        it { expect { subject }.to raise_error(StandardError) }
       end
     end
   end