Merge PR #56934 into main

* refs/pull/56934/head:
	mds: move drop_locks to directly after rdonly check
	qa: test quiesce.block is replicated
	qa: test that ceph.dir.subvolume is replicated properly
	mds: add debug "lock path" command
	qa: move reqid_tostr helper
	qa: return run_shell process for waiters

Reviewed-by: Leonid Usov <leonid.usov@ibm.com>

diff --cc qa/tasks/cephfs/mount.py
Simple merge

diff --cc qa/tasks/cephfs/test_quiesce.py
Simple merge

diff --cc src/mds/MDCache.cc
Simple merge

diff --cc src/mds/MDSRank.cc
Simple merge

diff --cc src/mds/Server.cc
Simple merge