Save backup time as is. Fixes #3857.

lib/tasks/gitlab/backup.rake

@@ -11,12 +11,11 @@ namespace :gitlab do
       Rake::Task["gitlab:backup:repo:create"].invoke
       Rake::Task["gitlab:backup:uploads:create"].invoke
-      current_time = Time.now
       # saving additional informations
       s = {}
       s[:db_version]         = "#{ActiveRecord::Migrator.current_version}"
-      s[:backup_created_at]  = current_time
+      s[:backup_created_at]  = Time.now
       s[:gitlab_version]     = %x{git rev-parse HEAD}.gsub(/\n/,"")
       s[:tar_version]        = %x{tar --version | head -1}.gsub(/\n/,"")
@@ -27,8 +26,8 @@ namespace :gitlab do
       end
       # create archive
-      print "Creating backup archive: #{current_time.to_i}_gitlab_backup.tar ... "
-      if Kernel.system("tar -cf #{current_time.to_i}_gitlab_backup.tar repositories/ db/ uploads/ backup_information.yml")
+      print "Creating backup archive: #{s[:backup_created_at].to_i}_gitlab_backup.tar ... "
+      if Kernel.system("tar -cf #{s[:backup_created_at].to_i}_gitlab_backup.tar repositories/ db/ uploads/ backup_information.yml")
         puts "done".green
       else
         puts "failed".red