Ceph

2020-03-07T03:29:24.584 INFO:teuthology.orchestra.run.smithi025:> CEPH_ARGS='--filestore-merge-threshold 1 --filestore-split-multiple 1' sudo -E ceph-objectstore-tool --no-mon-config --log-file=/var/log/ceph/objectstore_tool.$pid.log --data-path /var/lib/ceph/osd/ceph-1 --journal-path /var/lib/ceph/osd/ceph-1/journal --op apply-layout-settings --pool device_health_metrics
...
2020-03-07T03:29:25.455 INFO:teuthology.orchestra.run.smithi025.stderr:Nothing to do for non-filestore backend
...
2020-03-07T03:29:25.999 INFO:tasks.thrashosds.thrasher:Traceback (most recent call last):
  File "/home/teuthworker/src/git.ceph.com_ceph-c_wip-sage2-testing-2020-03-06-1128/qa/tasks/ceph_manager.py", line 123, in wrapper
    return func(self)
  File "/home/teuthworker/src/git.ceph.com_ceph-c_wip-sage2-testing-2020-03-06-1128/qa/tasks/ceph_manager.py", line 1205, in _do_thrash
    self.choose_action()()
  File "/home/teuthworker/src/git.ceph.com_ceph-c_wip-sage2-testing-2020-03-06-1128/qa/tasks/ceph_manager.py", line 461, in kill_osd
    " failed with {status}".format(status=proc.exitstatus))
Exception: ceph-objectstore-tool apply-layout-settings failed with 10

/a/sage-2020-03-06_21:03:21-rados-wip-sage2-testing-2020-03-06-1128-distro-basic-smithi/4832203

the relevant code is

  if (!fs) {
    cerr << "Nothing to do for non-filestore backend" << std::endl;
    return 0; // making this return success makes testing easier
  }

not sure where the 10 came from! during shutdown there is this,

  int r = fs->umount();
  if (r < 0) {
    cerr << "umount failed: " << cpp_strerror(r) << std::endl;
    // If no previous error, then use umount() error
    if (ret == 0)
      ret = r;
  }

but the tool log shows a successful shutdown (copied to archive dir)