Comment 3 for bug 1642391

Hello there, basically I'm hitting the same problem like dr Skape, I've also got a directory in the path:

2016-11-17T14:19:09Z notice nailgun-agent: E, [2016-11-17T14:19:09.633898 #9763] ERROR -- : Error 'Invalid argument @ rb_readlink - /dev/disk/by-id/scsi-SSAMSUNG_MZ6ER400HAGL' in gathering disks metadata: ["/usr/bin/nailgun-agent:875:in `readlink'", "/usr/bin/nailgun-agent:875:in `block in _disk_id_by_name'", "/usr/bin/nailgun-agent:875:in `select'", "/usr/bin/nailgun-agent:875:in `_disk_id_by_name'", "/usr/bin/nailgun-agent:1004:in `block in physical_data_storage_devices'", "/usr/bin/nailgun-agent:968:in `each'", "/usr/bin/nailgun-agent:968:in `physical_data_storage_devices'", "/usr/bin/nailgun-agent:727:in `block (2 levels) in _detailed'", "/usr/bin/nailgun-agent:721:in `each'", "/usr/bin/nailgun-agent:721:in `block in _detailed'", "/usr/lib/ruby/2.3.0/timeout.rb:91:in `block in timeout'", "/usr/lib/ruby/2.3.0/timeout.rb:33:in `block in catch'", "/usr/lib/ruby/2.3.0/timeout.rb:33:in `catch'", "/usr/lib/ruby/2.3.0/timeout.rb:33:in `catch'", "/usr/lib/ruby/2.3.0/timeout.rb:106:in `timeout'", "/usr/bin/nailgun-agent:7