Merge PR #43163 into master

* refs/pull/43163/head:
	qa: fsync dir for asynchronous creat on stray tests
	qa: refactor and generalize create_n_files
	qa: only set frag confs for workloads
	mds: improve debugging for fragment size check

Reviewed-by: Ramana Raja <rraja@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>