Hey folks, A while ago we changed the lab from being a mix of long-lived OS installations to being freshly imaged on every test. It appears we never updated the non-RADOS suites for that world. What does that mean? When the machine installations were long-lived, we had a pretty even mixture of the OSes we tested in the lab — at that time, CentOS and Ubuntu LTS releases. But now, the test needs to select an OS to install or it gets the default, which is apparently Ubuntu 16.04. A small number of tasks always selected a fixed OS for one reason or another (things like known valgrind issues, or packages that weren't built, etc). But most of them don't. How do I fix it? There's a ceph.git/qa/distros/ folder that lets you select (by symlinking them into your suite, same as "clusters"; see the rados suites for examples) from a "supported" matrix (rhel, centos, and ubuntu latest), a "supported-all-distros" matrix (centos and ubuntu latest, plus rhel7.5 and ubuntu 16.04), or a "supported-random-distro$" that will select a random distro on every scheduled run from the supported-all-distros list. It'd be great if we can get the rbd, rgw, and cephfs suites updated for a better distribution cross-section. Thanks! -Greg
