Comment 23 for bug 1642111

Based on this logstash query:

http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22device-mapper%3A%20reload%20ioctl%20on%5C%22%20AND%20%20%20message%3A%5C%22failed%3A%20Invalid%20argument%5C%22%20AND%20%20%20tags%3A%5C%22screen-c-vol.txt%5C%22%20AND%20voting%3A1&from=7d

This started showing up around 10/3, so it could be related to the fact we're using the Pike UCA now:

https://github.com/openstack-dev/devstack/commit/b3b6c102d922ac638dbea51b22e30764031df76d

So pulling in new versions of lvm packages. Maybe check the diff in the changelog for the package before and after that change and see if there is anything suspect.