Trying to create a backup on RHEL 6.5 with CE 8.0.0 gives me this error. Backup will not complete.
* DKATO-jp/mtc_ex.wiki ... [SKIPPED]
* rakallep-in/electronics_expert_factory ... rake aborted!
Errno::EMFILE: Too many open files - tar
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/popen.rb:23:in `popen'
/opt/gitlab/embedded/service/gitlab-rails/lib/backup/repository.rb:20:in `block in dump'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12 /lib/active_record/relation/batches.rb:52:in `block (2 levels) in find_each'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12 /lib/active_record/relation/batches.rb:52:in `each'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12 /lib/active_record/relation/batches.rb:52:in `block in find_each'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12 /lib/active_record/relation/batches.rb:126:in `find_in_batches'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12 /lib/active_record/relation/batches.rb:51:in `find_each'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12 /lib/active_record/querying.rb:9:in `find_each'
/opt/gitlab/embedded/service/gitlab-rails/lib/backup/repository.rb:10:in `dump'
/opt/gitlab/embedded/service/gitlab-rails/lib/tasks/gitlab/backup.rake:47:in `block (4 levels) in <top (required)>'
/opt/gitlab/embedded/service/gitlab-rails/lib/tasks/gitlab/backup.rake:12:in `block (3 levels) in <top (required)>'
Tasks: TOP => gitlab:backup:repo:create
(See full trace by running task with --trace)
[DONE]
I have increased ulimit -n (hard and soft) but no use.
System information
System: RedHatEnterpriseServer 6.6
Current User: git
Using RVM: no
Ruby Version: 2.1.6p336
Gem Version: 2.2.5
Bundler Version:1.5.3
Rake Version: 10.4.2
Sidekiq Version:3.3.0
GitLab information
Version: 8.0.0
Revision: d70c051
Directory: /opt/gitlab/embedded/service/gitlab-rails
DB Adapter: postgresql
URL: https://XXXXXXXXX.XYZ..com
HTTP Clone URL: https://XXXXXXXXX.XYZ..com/some-group/some-project.git
SSH Clone URL: git@XXXXXXXXXXXX.com:some-group/some-project.git
Using LDAP: yes
Using Omniauth: no
GitLab Shell
Version: 2.6.5
Repositories: /var/opt/gitlab/git-data/repositories
Hooks: /opt/gitlab/embedded/service/gitlab-shell/hooks/
Git: /opt/gitlab/embedded/bin/git