This might actually be the real fail:
http://logstash.openstack.org/#eyJzZWFyY2giOiJtZXNzYWdlOlwiRXJyb3IgZnJvbSBsaWJ2aXJ0IGR1cmluZyB1bmZpbHRlci4gQ29kZT01NSBFcnJvcj1SZXF1ZXN0ZWQgb3BlcmF0aW9uIGlzIG5vdCB2YWxpZDogbndmaWx0ZXIgaXMgaW4gdXNlXCIgQU5EIGZpbGVuYW1lOlwibG9ncy9zY3JlZW4tbi1jcHUudHh0XCIiLCJmaWVsZHMiOltdLCJvZmZzZXQiOjAsInRpbWVmcmFtZSI6ImFsbCIsImdyYXBobW9kZSI6ImNvdW50IiwidGltZSI6eyJ1c2VyX2ludGVydmFsIjowfSwic3RhbXAiOjEzOTE2MjM5MzE5MDN9
message:"Error from libvirt during unfilter. Code=55 Error=Requested operation is not valid: nwfilter is in use" AND filename:"logs/screen-n-cpu.txt"
This might actually be the real fail:
http:// logstash. openstack. org/#eyJzZWFyY2 giOiJtZXNzYWdlO lwiRXJyb3IgZnJv bSBsaWJ2aXJ0IGR 1cmluZyB1bmZpbH Rlci4gQ29kZT01N SBFcnJvcj1SZXF1 ZXN0ZWQgb3BlcmF 0aW9uIGlzIG5vdC B2YWxpZDogbndma Wx0ZXIgaXMgaW4g dXNlXCIgQU5EIGZ pbGVuYW1lOlwibG 9ncy9zY3JlZW4tb i1jcHUudHh0XCIi LCJmaWVsZHMiOlt dLCJvZmZzZXQiOj AsInRpbWVmcmFtZ SI6ImFsbCIsImdy YXBobW9kZSI6ImN vdW50IiwidGltZS I6eyJ1c2VyX2lud GVydmFsIjowfSwi c3RhbXAiOjEzOTE 2MjM5MzE5MDN9
message:"Error from libvirt during unfilter. Code=55 Error=Requested operation is not valid: nwfilter is in use" AND filename: "logs/screen- n-cpu.txt"