Due to the headaches introduced by bug 882147 (which effectively guarantees that tests will fail erroneously), we are changing the Upstart tests to detect a /tmp overlayfs filesystem and display a warning. One approach is to make use of OVERLAYFS_SUPER_MAGIC to check /tmp. See below for the discussion:
Hi Joseph,
Due to the headaches introduced by bug 882147 (which effectively guarantees that tests will fail erroneously), we are changing the Upstart tests to detect a /tmp overlayfs filesystem and display a warning. One approach is to make use of OVERLAYFS_ SUPER_MAGIC to check /tmp. See below for the discussion:
https:/ /code.launchpad .net/~jamesodhu nt/upstart/ check-for- overlayfs/ +merge/ 191393