Merge PR #54581 into main

Merge PR #54581 into main

* refs/pull/54581/head:
	doc/dev: update quiesce developer document
	qa: wrap quiesce verification to dump debugging on error
	qa: update quiesce tests for control via locallock
	qa: set archive path in vstart_runner
	qa: refactor CephFSMount.kill_background to optionally kill all background jobs
	qa: use kwarg for rank parameter
	qa: simplify calls to (rank|mds)_(tell|asok)
	Revert "pybind/mgr/volumes: block quiesce for critical .meta file"
	mds: remove is_root indication on quiesce_inode op
	mds: prevent new lock cache cons when invalidating an existing one
	mds: use XLOCK_WAIT For local lock xlockers
	mds: prevent new wrlocks on LocalLock if there exists any xlock waiter
	mds: block import discover when parent directory inode is quiesced
	mds: avoid issuing exclusive caps to clients lacking w caps
	mds: print lock cache during invalidation
	mds: use inodeno_t to track quiesce requests
	mds: dispatch quiesce_inode ops after dir traversal
	mds: remove quiescelock handling for SimpleLock type
	mds: quiescelock as local lock + cap masking
	qa: run quiesce unit tests in fs:functional
	qa: add quiesce protocol unit tests
	qa: detect partial migrations during large config of dist epin
	qa: use stdin-killer to timeout run_shell_payload
	qa: simplify run_shell argument processing
	doc: add dev docs for quiesce protocol
	pybind/mgr/volumes: block quiesce for critical .meta file
	mds: add vxattr to block quiesce on an inode
	mds: convert encoded ephemeral dist pin to flags
	mds: add counter to throttle quiesce
	mds: add quiesce set feature flag
	mds: skip non-head inodes for quiesce
	mds: add quiesce op
	mds: print all SimpleLock flags in debug output
	mds: pretty print mutation when dumping lock
	mds: add new inode quiescelock
	mds: use 128 bits for waiters on MDSCacheObject
	mds: provide mechanism to authpin while freezing
	mds: add command to get specific op
	mds: finish request before completing internal req
	mds: complete internal op if killed
	mds: avoid killing dead requests
	mds: add command to kill request
	mds: add path argument to `ops` and `dump tree` to stream result to local file
	mds: print internal_request filepaths if present
	mds: add more information to debug message
	mds: remove redundant parenthesis
	mds: implement Mutation::dump method
	mds: make LockType fields const
	mds: annotate mdr with try_rdlock_snap_layout failure
	mds: refactor if into switch
	mds: call Locker method using this
	mds: simplify assert
	mds: dump locks passed to Locker::acquire_locks
	mds: add LockOp::print method for debugging
	mds: use new insert template via print
	mds: add request result to mutation for analysis by tests
	mds: add comment on locking order rules
	mds: allow specifying rdlock position
	mds: remove dead method
	common: provide a template for object dumps
	common: support long running ops without slow warnings
	common: simplify loop
	common: add JSONFormatterFile class
	common: use more efficient vector for stack
	include: use larger int for large gathers

Reviewed-by: Venky Shankar <vshankar@redhat.com>
Reviewed-by: Leonid Usov <leonid.usov@ibm.com>