I am using gitlab version 7.10.4 and I am trying to upgrade the installation. But I am getting this when I tried to create back up

gitlab-rake gitlab:backup:create

Errno::EPERM: Operation not permitted @ chmod_internal - db Errno::EPERM: Operation not permitted @ chmod_internal - db /opt/gitlab/embedded/lib/ruby/2.1.0/fileutils.rb:1354:in chmod'
/opt/gitlab/embedded/lib/ruby/2.1.0/fileutils.rb:1354:inchmod' /opt/gitlab/embedded/lib/ruby/2.1.0/fileutils.rb:997:in block in chmod'
/opt/gitlab/embedded/lib/ruby/2.1.0/fileutils.rb:996:ineach' /opt/gitlab/embedded/lib/ruby/2.1.0/fileutils.rb:996:in chmod'
/opt/gitlab/embedded/service/gitlab-rails/lib/backup/manager.rb:19:inblock in pack' /opt/gitlab/embedded/service/gitlab-rails/lib/backup/manager.rb:13:in chdir'
/opt/gitlab/embedded/service/gitlab-rails/lib/backup/manager.rb:13:inpack' /opt/gitlab/embedded/service/gitlab-rails/lib/tasks/gitlab/backup.rake:16:in block (3 levels) in <top (required)>'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:incall' /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in block in execute'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:ineach' /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in execute'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:179:inblock in invoke_with_call_chain' /opt/gitlab/embedded/lib/ruby/2.1.0/monitor.rb:211:in mon_synchronize'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:172:ininvoke_with_call_chain' /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:165:in invoke'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:150:ininvoke_task' /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in block (2 levels) in top_level'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:ineach' /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in block in top_level'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:115:inrun_with_threads' /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:100:in top_level'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:78:inblock in run' /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:176:in standard_exception_handling'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:75:inrun' /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/rake-10.4.2/bin/rake:33:in <top (required)>'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/bin/rake:23:inload' /opt/gitlab/embedded/service/gem/ruby/2.1.0/bin/rake:23:in `' Tasks: TOP => gitlab:backup:create

Please help me on this.