1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
8 * This is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License version 2.1, as published by the Free Software
11 * Foundation. See file COPYING.
15 #include <boost/lexical_cast.hpp>
16 #include "include/assert.h" // lexical_cast includes system assert.h
18 #include <boost/config/warning_disable.hpp>
19 #include <boost/fusion/include/std_pair.hpp>
27 #include "MDBalancer.h"
29 #include "SnapClient.h"
32 #include "msg/Messenger.h"
34 #include "osdc/Objecter.h"
36 #include "messages/MClientSession.h"
37 #include "messages/MClientRequest.h"
38 #include "messages/MClientReply.h"
39 #include "messages/MClientReconnect.h"
40 #include "messages/MClientCaps.h"
41 #include "messages/MClientSnap.h"
43 #include "messages/MMDSSlaveRequest.h"
45 #include "messages/MLock.h"
47 #include "events/EUpdate.h"
48 #include "events/ESlaveUpdate.h"
49 #include "events/ESession.h"
50 #include "events/EOpen.h"
51 #include "events/ECommitted.h"
53 #include "include/filepath.h"
54 #include "common/errno.h"
55 #include "common/Timer.h"
56 #include "common/perf_counters.h"
57 #include "include/compat.h"
58 #include "osd/OSDMap.h"
66 #include "common/config.h"
68 #define dout_context g_ceph_context
69 #define dout_subsys ceph_subsys_mds
71 #define dout_prefix *_dout << "mds." << mds->get_nodeid() << ".server "
73 class ServerContext
: public MDSInternalContextBase
{
76 MDSRank
*get_mds() override
82 explicit ServerContext(Server
*s
) : server(s
) {
83 assert(server
!= NULL
);
87 class ServerLogContext
: public MDSLogContextBase
{
90 MDSRank
*get_mds() override
96 void pre_finish(int r
) override
{
98 mdr
->mark_event("journal_committed: ");
101 explicit ServerLogContext(Server
*s
) : server(s
) {
102 assert(server
!= NULL
);
104 explicit ServerLogContext(Server
*s
, MDRequestRef
& r
) : server(s
), mdr(r
) {
105 assert(server
!= NULL
);
109 void Server::create_logger()
111 PerfCountersBuilder
plb(g_ceph_context
, "mds_server", l_mdss_first
, l_mdss_last
);
112 plb
.add_u64_counter(l_mdss_handle_client_request
,"handle_client_request",
113 "Client requests", "hcr", PerfCountersBuilder::PRIO_INTERESTING
);
114 plb
.add_u64_counter(l_mdss_handle_slave_request
, "handle_slave_request",
115 "Slave requests", "hsr", PerfCountersBuilder::PRIO_INTERESTING
);
116 plb
.add_u64_counter(l_mdss_handle_client_session
, "handle_client_session",
117 "Client session messages", "hcs", PerfCountersBuilder::PRIO_INTERESTING
);
118 plb
.add_u64_counter(l_mdss_dispatch_client_request
, "dispatch_client_request", "Client requests dispatched");
119 plb
.add_u64_counter(l_mdss_dispatch_slave_request
, "dispatch_server_request", "Server requests dispatched");
120 plb
.add_u64_counter(l_mdss_req_lookuphash
, "req_lookuphash",
121 "Request type lookup hash of inode");
122 plb
.add_u64_counter(l_mdss_req_lookupino
, "req_lookupino",
123 "Request type lookup inode");
124 plb
.add_u64_counter(l_mdss_req_lookupparent
, "req_lookupparent",
125 "Request type lookup parent");
126 plb
.add_u64_counter(l_mdss_req_lookupname
, "req_lookupname",
127 "Request type lookup name");
128 plb
.add_u64_counter(l_mdss_req_lookup
, "req_lookup",
129 "Request type lookup");
130 plb
.add_u64_counter(l_mdss_req_lookupsnap
, "req_lookupsnap",
131 "Request type lookup snapshot");
132 plb
.add_u64_counter(l_mdss_req_getattr
, "req_getattr",
133 "Request type get attribute");
134 plb
.add_u64_counter(l_mdss_req_setattr
, "req_setattr",
135 "Request type set attribute");
136 plb
.add_u64_counter(l_mdss_req_setlayout
, "req_setlayout",
137 "Request type set file layout");
138 plb
.add_u64_counter(l_mdss_req_setdirlayout
, "req_setdirlayout",
139 "Request type set directory layout");
140 plb
.add_u64_counter(l_mdss_req_setxattr
, "req_setxattr",
141 "Request type set extended attribute");
142 plb
.add_u64_counter(l_mdss_req_rmxattr
, "req_rmxattr",
143 "Request type remove extended attribute");
144 plb
.add_u64_counter(l_mdss_req_readdir
, "req_readdir",
145 "Request type read directory");
146 plb
.add_u64_counter(l_mdss_req_setfilelock
, "req_setfilelock",
147 "Request type set file lock");
148 plb
.add_u64_counter(l_mdss_req_getfilelock
, "req_getfilelock",
149 "Request type get file lock");
150 plb
.add_u64_counter(l_mdss_req_create
, "req_create",
151 "Request type create");
152 plb
.add_u64_counter(l_mdss_req_open
, "req_open",
153 "Request type open");
154 plb
.add_u64_counter(l_mdss_req_mknod
, "req_mknod",
155 "Request type make node");
156 plb
.add_u64_counter(l_mdss_req_link
, "req_link",
157 "Request type link");
158 plb
.add_u64_counter(l_mdss_req_unlink
, "req_unlink",
159 "Request type unlink");
160 plb
.add_u64_counter(l_mdss_req_rmdir
, "req_rmdir",
161 "Request type remove directory");
162 plb
.add_u64_counter(l_mdss_req_rename
, "req_rename",
163 "Request type rename");
164 plb
.add_u64_counter(l_mdss_req_mkdir
, "req_mkdir",
165 "Request type make directory");
166 plb
.add_u64_counter(l_mdss_req_symlink
, "req_symlink",
167 "Request type symbolic link");
168 plb
.add_u64_counter(l_mdss_req_lssnap
, "req_lssnap",
169 "Request type list snapshot");
170 plb
.add_u64_counter(l_mdss_req_mksnap
, "req_mksnap",
171 "Request type make snapshot");
172 plb
.add_u64_counter(l_mdss_req_rmsnap
, "req_rmsnap",
173 "Request type remove snapshot");
174 plb
.add_u64_counter(l_mdss_req_renamesnap
, "req_renamesnap",
175 "Request type rename snapshot");
176 logger
= plb
.create_perf_counters();
177 g_ceph_context
->get_perfcounters_collection()->add(logger
);
180 Server::Server(MDSRank
*m
) :
182 mdcache(mds
->mdcache
), mdlog(mds
->mdlog
),
185 reconnect_done(NULL
),
186 failed_reconnects(0),
187 reconnect_evicting(false),
188 terminating_sessions(false)
193 /* This function DOES put the passed message before returning*/
194 void Server::dispatch(Message
*m
)
196 switch (m
->get_type()) {
197 case CEPH_MSG_CLIENT_RECONNECT
:
198 handle_client_reconnect(static_cast<MClientReconnect
*>(m
));
203 if (!mds
->is_active() &&
204 !(mds
->is_stopping() && m
->get_source().is_mds())) {
205 if (m
->get_type() == CEPH_MSG_CLIENT_REQUEST
&&
206 (mds
->is_reconnect() || mds
->get_want_state() == CEPH_MDS_STATE_RECONNECT
)) {
207 MClientRequest
*req
= static_cast<MClientRequest
*>(m
);
208 Session
*session
= get_session(req
);
209 if (!session
|| session
->is_closed()) {
210 dout(5) << "session is closed, dropping " << req
->get_reqid() << dendl
;
214 bool queue_replay
= false;
215 if (req
->is_replay()) {
216 dout(3) << "queuing replayed op" << dendl
;
218 } else if (req
->get_retry_attempt()) {
219 // process completed request in clientreplay stage. The completed request
220 // might have created new file/directorie. This guarantees MDS sends a reply
221 // to client before other request modifies the new file/directorie.
222 if (session
->have_completed_request(req
->get_reqid().tid
, NULL
)) {
223 dout(3) << "queuing completed op" << dendl
;
226 // this request was created before the cap reconnect message, drop any embedded
228 req
->releases
.clear();
231 req
->mark_queued_for_replay();
232 mds
->enqueue_replay(new C_MDS_RetryMessage(mds
, m
));
237 bool wait_for_active
= true;
238 if (m
->get_type() == MSG_MDS_SLAVE_REQUEST
) {
239 // handle_slave_request() will wait if necessary
240 wait_for_active
= false;
241 } else if (mds
->is_clientreplay()) {
242 // session open requests need to be handled during replay,
243 // close requests need to be delayed
244 if ((m
->get_type() == CEPH_MSG_CLIENT_SESSION
&&
245 (static_cast<MClientSession
*>(m
))->get_op() != CEPH_SESSION_REQUEST_CLOSE
)) {
246 wait_for_active
= false;
247 } else if (m
->get_type() == CEPH_MSG_CLIENT_REQUEST
) {
248 MClientRequest
*req
= static_cast<MClientRequest
*>(m
);
249 if (req
->is_queued_for_replay()) {
250 wait_for_active
= false;
254 if (wait_for_active
) {
255 dout(3) << "not active yet, waiting" << dendl
;
256 mds
->wait_for_active(new C_MDS_RetryMessage(mds
, m
));
261 switch (m
->get_type()) {
262 case CEPH_MSG_CLIENT_SESSION
:
263 handle_client_session(static_cast<MClientSession
*>(m
));
265 case CEPH_MSG_CLIENT_REQUEST
:
266 handle_client_request(static_cast<MClientRequest
*>(m
));
268 case MSG_MDS_SLAVE_REQUEST
:
269 handle_slave_request(static_cast<MMDSSlaveRequest
*>(m
));
272 derr
<< "server unknown message " << m
->get_type() << dendl
;
273 assert(0 == "server unknown message");
279 // ----------------------------------------------------------
280 // SESSION management
282 class C_MDS_session_finish
: public ServerLogContext
{
287 interval_set
<inodeno_t
> inos
;
291 C_MDS_session_finish(Server
*srv
, Session
*se
, uint64_t sseq
, bool s
, version_t mv
, Context
*fin_
= NULL
) :
292 ServerLogContext(srv
), session(se
), state_seq(sseq
), open(s
), cmapv(mv
), inotablev(0), fin(fin_
) { }
293 C_MDS_session_finish(Server
*srv
, Session
*se
, uint64_t sseq
, bool s
, version_t mv
, interval_set
<inodeno_t
>& i
, version_t iv
, Context
*fin_
= NULL
) :
294 ServerLogContext(srv
), session(se
), state_seq(sseq
), open(s
), cmapv(mv
), inos(i
), inotablev(iv
), fin(fin_
) { }
295 void finish(int r
) override
{
297 server
->_session_logged(session
, state_seq
, open
, cmapv
, inos
, inotablev
);
304 Session
*Server::get_session(Message
*m
)
306 Session
*session
= static_cast<Session
*>(m
->get_connection()->get_priv());
308 dout(20) << "get_session have " << session
<< " " << session
->info
.inst
309 << " state " << session
->get_state_name() << dendl
;
310 session
->put(); // not carry ref
312 dout(20) << "get_session dne for " << m
->get_source_inst() << dendl
;
317 /* This function DOES put the passed message before returning*/
318 void Server::handle_client_session(MClientSession
*m
)
321 bool blacklisted
= false;
322 Session
*session
= get_session(m
);
324 dout(3) << "handle_client_session " << *m
<< " from " << m
->get_source() << dendl
;
325 assert(m
->get_source().is_client()); // should _not_ come from an mds!
328 dout(0) << " ignoring sessionless msg " << *m
<< dendl
;
334 logger
->inc(l_mdss_handle_client_session
);
337 switch (m
->get_op()) {
338 case CEPH_SESSION_REQUEST_OPEN
:
339 if (session
->is_opening() ||
340 session
->is_open() ||
341 session
->is_stale() ||
342 session
->is_killing()) {
343 dout(10) << "currently open|opening|stale|killing, dropping this req" << dendl
;
344 // set client metadata for session opened by prepare_force_open_sessions
345 if (!m
->client_meta
.empty())
346 session
->set_client_metadata(m
->client_meta
);
350 assert(session
->is_closed() ||
351 session
->is_closing());
353 blacklisted
= mds
->objecter
->with_osdmap(
354 [session
](const OSDMap
&osd_map
) -> bool {
355 return osd_map
.is_blacklisted(session
->info
.inst
.addr
);
359 dout(10) << "ignoring blacklisted client " << session
->info
.inst
.addr
<< dendl
;
364 session
->set_client_metadata(m
->client_meta
);
365 dout(20) << __func__
<< " CEPH_SESSION_REQUEST_OPEN "
366 << session
->info
.client_metadata
.size() << " metadata entries:" << dendl
;
367 for (map
<string
, string
>::iterator i
= session
->info
.client_metadata
.begin();
368 i
!= session
->info
.client_metadata
.end(); ++i
) {
369 dout(20) << " " << i
->first
<< ": " << i
->second
<< dendl
;
372 // Special case for the 'root' metadata path; validate that the claimed
373 // root is actually within the caps of the session
374 if (session
->info
.client_metadata
.count("root")) {
375 const auto claimed_root
= session
->info
.client_metadata
.at("root");
376 // claimed_root has a leading "/" which we strip before passing
378 if (claimed_root
.empty() || claimed_root
[0] != '/' ||
379 !session
->auth_caps
.path_capable(claimed_root
.substr(1))) {
380 derr
<< __func__
<< " forbidden path claimed as mount root: "
381 << claimed_root
<< " by " << m
->get_source() << dendl
;
382 // Tell the client we're rejecting their open
383 mds
->send_message_client(new MClientSession(CEPH_SESSION_REJECT
), session
);
384 mds
->clog
->warn() << "client session with invalid root '" <<
385 claimed_root
<< "' denied (" << session
->info
.inst
<< ")";
387 // Drop out; don't record this session in SessionMap or journal it.
392 if (session
->is_closed())
393 mds
->sessionmap
.add_session(session
);
395 pv
= mds
->sessionmap
.mark_projected(session
);
396 sseq
= mds
->sessionmap
.set_state(session
, Session::STATE_OPENING
);
397 mds
->sessionmap
.touch_session(session
);
398 mdlog
->start_submit_entry(new ESession(m
->get_source_inst(), true, pv
, m
->client_meta
),
399 new C_MDS_session_finish(this, session
, sseq
, true, pv
));
403 case CEPH_SESSION_REQUEST_RENEWCAPS
:
404 if (session
->is_open() ||
405 session
->is_stale()) {
406 mds
->sessionmap
.touch_session(session
);
407 if (session
->is_stale()) {
408 mds
->sessionmap
.set_state(session
, Session::STATE_OPEN
);
409 mds
->locker
->resume_stale_caps(session
);
410 mds
->sessionmap
.touch_session(session
);
412 m
->get_connection()->send_message(new MClientSession(CEPH_SESSION_RENEWCAPS
, m
->get_seq()));
414 dout(10) << "ignoring renewcaps on non open|stale session (" << session
->get_state_name() << ")" << dendl
;
418 case CEPH_SESSION_REQUEST_CLOSE
:
420 if (session
->is_closed() ||
421 session
->is_closing() ||
422 session
->is_killing()) {
423 dout(10) << "already closed|closing|killing, dropping this req" << dendl
;
427 if (session
->is_importing()) {
428 dout(10) << "ignoring close req on importing session" << dendl
;
432 assert(session
->is_open() ||
433 session
->is_stale() ||
434 session
->is_opening());
435 if (m
->get_seq() < session
->get_push_seq()) {
436 dout(10) << "old push seq " << m
->get_seq() << " < " << session
->get_push_seq()
437 << ", dropping" << dendl
;
441 // We are getting a seq that is higher than expected.
442 // Handle the same as any other seqn error.
444 if (m
->get_seq() != session
->get_push_seq()) {
445 dout(0) << "old push seq " << m
->get_seq() << " != " << session
->get_push_seq()
446 << ", BUGGY!" << dendl
;
447 mds
->clog
->warn() << "incorrect push seq " << m
->get_seq() << " != "
448 << session
->get_push_seq() << ", dropping" << " from client : " << session
->get_human_name();
452 journal_close_session(session
, Session::STATE_CLOSING
, NULL
);
456 case CEPH_SESSION_FLUSHMSG_ACK
:
457 finish_flush_session(session
, m
->get_seq());
460 case CEPH_SESSION_REQUEST_FLUSH_MDLOG
:
470 void Server::flush_client_sessions(set
<client_t
>& client_set
, MDSGatherBuilder
& gather
)
472 for (set
<client_t
>::iterator p
= client_set
.begin(); p
!= client_set
.end(); ++p
) {
473 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(p
->v
));
475 if (!session
->is_open() ||
476 !session
->connection
.get() ||
477 !session
->connection
->has_feature(CEPH_FEATURE_EXPORT_PEER
))
479 version_t seq
= session
->wait_for_flush(gather
.new_sub());
480 mds
->send_message_client(new MClientSession(CEPH_SESSION_FLUSHMSG
, seq
), session
);
484 void Server::finish_flush_session(Session
*session
, version_t seq
)
486 list
<MDSInternalContextBase
*> finished
;
487 session
->finish_flush(seq
, finished
);
488 mds
->queue_waiters(finished
);
491 void Server::_session_logged(Session
*session
, uint64_t state_seq
, bool open
, version_t pv
,
492 interval_set
<inodeno_t
>& inos
, version_t piv
)
494 dout(10) << "_session_logged " << session
->info
.inst
<< " state_seq " << state_seq
<< " " << (open
? "open":"close")
495 << " " << pv
<< dendl
;
498 assert(session
->is_closing() || session
->is_killing() ||
499 session
->is_opening()); // re-open closing session
500 session
->info
.prealloc_inos
.subtract(inos
);
501 mds
->inotable
->apply_release_ids(inos
);
502 assert(mds
->inotable
->get_version() == piv
);
505 mds
->sessionmap
.mark_dirty(session
);
508 if (session
->get_state_seq() != state_seq
) {
509 dout(10) << " journaled state_seq " << state_seq
<< " != current " << session
->get_state_seq()
510 << ", noop" << dendl
;
511 // close must have been canceled (by an import?), or any number of other things..
513 assert(session
->is_opening());
514 mds
->sessionmap
.set_state(session
, Session::STATE_OPEN
);
515 mds
->sessionmap
.touch_session(session
);
516 assert(session
->connection
!= NULL
);
517 session
->connection
->send_message(new MClientSession(CEPH_SESSION_OPEN
));
518 if (mdcache
->is_readonly())
519 session
->connection
->send_message(new MClientSession(CEPH_SESSION_FORCE_RO
));
520 } else if (session
->is_closing() ||
521 session
->is_killing()) {
522 // kill any lingering capabilities, leases, requests
523 while (!session
->caps
.empty()) {
524 Capability
*cap
= session
->caps
.front();
525 CInode
*in
= cap
->get_inode();
526 dout(20) << " killing capability " << ccap_string(cap
->issued()) << " on " << *in
<< dendl
;
527 mds
->locker
->remove_client_cap(in
, session
->info
.inst
.name
.num());
529 while (!session
->leases
.empty()) {
530 ClientLease
*r
= session
->leases
.front();
531 CDentry
*dn
= static_cast<CDentry
*>(r
->parent
);
532 dout(20) << " killing client lease of " << *dn
<< dendl
;
533 dn
->remove_client_lease(r
, mds
->locker
);
535 if (client_reconnect_gather
.count(session
->info
.get_client())) {
536 dout(20) << " removing client from reconnect set" << dendl
;
537 client_reconnect_gather
.erase(session
->info
.get_client());
539 if (client_reconnect_gather
.empty()) {
540 dout(7) << " client " << session
->info
.inst
<< " was last reconnect, finishing" << dendl
;
541 reconnect_gather_finish();
545 if (session
->is_closing()) {
546 // mark con disposable. if there is a fault, we will get a
547 // reset and clean it up. if the client hasn't received the
548 // CLOSE message yet, they will reconnect and get an
549 // ms_handle_remote_reset() and realize they had in fact closed.
550 // do this *before* sending the message to avoid a possible
552 if (session
->connection
!= NULL
) {
553 // Conditional because terminate_sessions will indiscrimately
554 // put sessions in CLOSING whether they ever had a conn or not.
555 session
->connection
->mark_disposable();
559 mds
->send_message_client(new MClientSession(CEPH_SESSION_CLOSE
), session
);
560 mds
->sessionmap
.set_state(session
, Session::STATE_CLOSED
);
562 mds
->sessionmap
.remove_session(session
);
563 } else if (session
->is_killing()) {
564 // destroy session, close connection
565 if (session
->connection
!= NULL
) {
566 session
->connection
->mark_down();
568 mds
->sessionmap
.remove_session(session
);
578 * Inject sessions from some source other than actual connections.
581 * - sessions inferred from journal replay
582 * - sessions learned from other MDSs during rejoin
583 * - sessions learned from other MDSs during dir/caps migration
584 * - sessions learned from other MDSs during a cross-MDS rename
586 version_t
Server::prepare_force_open_sessions(map
<client_t
,entity_inst_t
>& cm
,
587 map
<client_t
,uint64_t>& sseqmap
)
589 version_t pv
= mds
->sessionmap
.get_projected();
591 dout(10) << "prepare_force_open_sessions " << pv
592 << " on " << cm
.size() << " clients"
594 for (map
<client_t
,entity_inst_t
>::iterator p
= cm
.begin(); p
!= cm
.end(); ++p
) {
596 Session
*session
= mds
->sessionmap
.get_or_add_session(p
->second
);
597 pv
= mds
->sessionmap
.mark_projected(session
);
598 if (session
->is_closed() ||
599 session
->is_closing() ||
600 session
->is_killing())
601 sseqmap
[p
->first
] = mds
->sessionmap
.set_state(session
, Session::STATE_OPENING
);
603 assert(session
->is_open() ||
604 session
->is_opening() ||
605 session
->is_stale());
606 session
->inc_importing();
611 void Server::finish_force_open_sessions(map
<client_t
,entity_inst_t
>& cm
,
612 map
<client_t
,uint64_t>& sseqmap
,
616 * FIXME: need to carefully consider the race conditions between a
617 * client trying to close a session and an MDS doing an import
618 * trying to force open a session...
620 dout(10) << "finish_force_open_sessions on " << cm
.size() << " clients,"
621 << " initial v " << mds
->sessionmap
.get_version() << dendl
;
624 for (map
<client_t
,entity_inst_t
>::iterator p
= cm
.begin(); p
!= cm
.end(); ++p
) {
626 Session
*session
= mds
->sessionmap
.get_session(p
->second
.name
);
629 if (sseqmap
.count(p
->first
)) {
630 uint64_t sseq
= sseqmap
[p
->first
];
631 if (session
->get_state_seq() != sseq
) {
632 dout(10) << "force_open_sessions skipping changed " << session
->info
.inst
<< dendl
;
634 dout(10) << "force_open_sessions opened " << session
->info
.inst
<< dendl
;
635 mds
->sessionmap
.set_state(session
, Session::STATE_OPEN
);
636 mds
->sessionmap
.touch_session(session
);
637 mds
->send_message_client(new MClientSession(CEPH_SESSION_OPEN
), session
);
638 if (mdcache
->is_readonly())
639 mds
->send_message_client(new MClientSession(CEPH_SESSION_FORCE_RO
), session
);
642 dout(10) << "force_open_sessions skipping already-open " << session
->info
.inst
<< dendl
;
643 assert(session
->is_open() || session
->is_stale());
647 session
->dec_importing();
650 mds
->sessionmap
.mark_dirty(session
);
653 dout(10) << __func__
<< ": final v " << mds
->sessionmap
.get_version() << dendl
;
656 class C_MDS_TerminatedSessions
: public ServerContext
{
657 void finish(int r
) override
{
658 server
->terminating_sessions
= false;
661 explicit C_MDS_TerminatedSessions(Server
*s
) : ServerContext(s
) {}
664 void Server::terminate_sessions()
666 dout(2) << "terminate_sessions" << dendl
;
668 terminating_sessions
= true;
670 // kill them off. clients will retry etc.
671 set
<Session
*> sessions
;
672 mds
->sessionmap
.get_client_session_set(sessions
);
673 for (set
<Session
*>::const_iterator p
= sessions
.begin();
676 Session
*session
= *p
;
677 if (session
->is_closing() ||
678 session
->is_killing() ||
679 session
->is_closed())
681 journal_close_session(session
, Session::STATE_CLOSING
, NULL
);
684 mdlog
->wait_for_safe(new C_MDS_TerminatedSessions(this));
688 void Server::find_idle_sessions()
690 dout(10) << "find_idle_sessions. laggy until " << mds
->get_laggy_until() << dendl
;
693 // (caps go stale, lease die)
694 utime_t now
= ceph_clock_now();
695 utime_t cutoff
= now
;
696 cutoff
-= g_conf
->mds_session_timeout
;
698 Session
*session
= mds
->sessionmap
.get_oldest_session(Session::STATE_OPEN
);
700 dout(20) << "laggiest active session is " << session
->info
.inst
<< dendl
;
701 if (session
->last_cap_renew
>= cutoff
) {
702 dout(20) << "laggiest active session is " << session
->info
.inst
<< " and sufficiently new ("
703 << session
->last_cap_renew
<< ")" << dendl
;
707 dout(10) << "new stale session " << session
->info
.inst
<< " last " << session
->last_cap_renew
<< dendl
;
708 mds
->sessionmap
.set_state(session
, Session::STATE_STALE
);
709 mds
->locker
->revoke_stale_caps(session
);
710 mds
->locker
->remove_stale_leases(session
);
711 mds
->send_message_client(new MClientSession(CEPH_SESSION_STALE
, session
->get_push_seq()), session
);
712 finish_flush_session(session
, session
->get_push_seq());
717 cutoff
-= g_conf
->mds_session_autoclose
;
719 // don't kick clients if we've been laggy
720 if (mds
->get_laggy_until() > cutoff
) {
721 dout(10) << " laggy_until " << mds
->get_laggy_until() << " > cutoff " << cutoff
722 << ", not kicking any clients to be safe" << dendl
;
726 if (mds
->sessionmap
.get_sessions().size() == 1 &&
727 mds
->mdsmap
->get_num_in_mds() == 1) {
728 dout(20) << "not evicting a slow client, because there is only one"
733 // Collect a list of sessions exceeding the autoclose threshold
734 std::vector
<Session
*> to_evict
;
735 const auto sessions_p
= mds
->sessionmap
.by_state
.find(Session::STATE_STALE
);
736 if (sessions_p
== mds
->sessionmap
.by_state
.end() || sessions_p
->second
->empty()) {
739 const auto &stale_sessions
= sessions_p
->second
;
740 assert(stale_sessions
!= nullptr);
742 for (const auto &session
: *stale_sessions
) {
743 if (session
->is_importing()) {
744 dout(10) << "stopping at importing session " << session
->info
.inst
<< dendl
;
747 assert(session
->is_stale());
748 if (session
->last_cap_renew
>= cutoff
) {
749 dout(20) << "oldest stale session is " << session
->info
.inst
<< " and sufficiently new ("
750 << session
->last_cap_renew
<< ")" << dendl
;
754 to_evict
.push_back(session
);
757 for (const auto &session
: to_evict
) {
759 age
-= session
->last_cap_renew
;
760 mds
->clog
->warn() << "evicting unresponsive client " << *session
761 << ", after " << age
<< " seconds";
762 dout(10) << "autoclosing stale session " << session
->info
.inst
<< " last "
763 << session
->last_cap_renew
<< dendl
;
765 if (g_conf
->mds_session_blacklist_on_timeout
) {
766 std::stringstream ss
;
767 mds
->evict_client(session
->info
.inst
.name
.num(), false, true,
770 kill_session(session
, NULL
);
776 * XXX bump in the interface here, not using an MDSInternalContextBase here
777 * because all the callers right now happen to use a SaferCond
779 void Server::kill_session(Session
*session
, Context
*on_safe
)
781 assert(mds
->mds_lock
.is_locked_by_me());
783 if ((session
->is_opening() ||
784 session
->is_open() ||
785 session
->is_stale()) &&
786 !session
->is_importing()) {
787 dout(10) << "kill_session " << session
<< dendl
;
788 journal_close_session(session
, Session::STATE_KILLING
, on_safe
);
790 dout(10) << "kill_session importing or already closing/killing " << session
<< dendl
;
791 assert(session
->is_closing() ||
792 session
->is_closed() ||
793 session
->is_killing() ||
794 session
->is_importing());
796 on_safe
->complete(0);
801 size_t Server::apply_blacklist(const std::set
<entity_addr_t
> &blacklist
)
803 std::list
<Session
*> victims
;
804 const auto sessions
= mds
->sessionmap
.get_sessions();
805 for (const auto p
: sessions
) {
806 if (!p
.first
.is_client()) {
807 // Do not apply OSDMap blacklist to MDS daemons, we find out
808 // about their death via MDSMap.
812 Session
*s
= p
.second
;
813 if (blacklist
.count(s
->info
.inst
.addr
)) {
814 victims
.push_back(s
);
818 for (const auto s
: victims
) {
819 kill_session(s
, nullptr);
822 dout(10) << "apply_blacklist: killed " << victims
.size() << dendl
;
824 return victims
.size();
827 void Server::journal_close_session(Session
*session
, int state
, Context
*on_safe
)
829 uint64_t sseq
= mds
->sessionmap
.set_state(session
, state
);
830 version_t pv
= mds
->sessionmap
.mark_projected(session
);
833 // release alloc and pending-alloc inos for this session
834 // and wipe out session state, in case the session close aborts for some reason
835 interval_set
<inodeno_t
> both
;
836 both
.insert(session
->info
.prealloc_inos
);
837 both
.insert(session
->pending_prealloc_inos
);
839 mds
->inotable
->project_release_ids(both
);
840 piv
= mds
->inotable
->get_projected_version();
844 mdlog
->start_submit_entry(new ESession(session
->info
.inst
, false, pv
, both
, piv
),
845 new C_MDS_session_finish(this, session
, sseq
, false, pv
, both
, piv
, on_safe
));
848 // clean up requests, too
849 elist
<MDRequestImpl
*>::iterator p
=
850 session
->requests
.begin(member_offset(MDRequestImpl
,
851 item_session_request
));
853 MDRequestRef mdr
= mdcache
->request_get((*p
)->reqid
);
855 mdcache
->request_kill(mdr
);
858 finish_flush_session(session
, session
->get_push_seq());
861 void Server::reconnect_clients(MDSInternalContext
*reconnect_done_
)
863 reconnect_done
= reconnect_done_
;
864 mds
->sessionmap
.get_client_set(client_reconnect_gather
);
866 if (client_reconnect_gather
.empty()) {
867 dout(7) << "reconnect_clients -- no sessions, doing nothing." << dendl
;
868 reconnect_gather_finish();
872 // clients will get the mdsmap and discover we're reconnecting via the monitor.
874 reconnect_start
= ceph_clock_now();
875 dout(1) << "reconnect_clients -- " << client_reconnect_gather
.size() << " sessions" << dendl
;
876 mds
->sessionmap
.dump();
879 /* This function DOES put the passed message before returning*/
880 void Server::handle_client_reconnect(MClientReconnect
*m
)
882 dout(7) << "handle_client_reconnect " << m
->get_source() << dendl
;
883 client_t from
= m
->get_source().num();
884 Session
*session
= get_session(m
);
887 if (!mds
->is_reconnect() && mds
->get_want_state() == CEPH_MDS_STATE_RECONNECT
) {
888 dout(10) << " we're almost in reconnect state (mdsmap delivery race?); waiting" << dendl
;
889 mds
->wait_for_reconnect(new C_MDS_RetryMessage(mds
, m
));
893 utime_t delay
= ceph_clock_now();
894 delay
-= reconnect_start
;
895 dout(10) << " reconnect_start " << reconnect_start
<< " delay " << delay
<< dendl
;
898 if (!mds
->is_reconnect()) {
899 // XXX maybe in the future we can do better than this?
900 dout(1) << " no longer in reconnect state, ignoring reconnect, sending close" << dendl
;
901 mds
->clog
->info() << "denied reconnect attempt (mds is "
902 << ceph_mds_state_name(mds
->get_state())
903 << ") from " << m
->get_source_inst()
904 << " after " << delay
<< " (allowed interval " << g_conf
->mds_reconnect_timeout
<< ")";
906 } else if (session
->is_closed()) {
907 dout(1) << " session is closed, ignoring reconnect, sending close" << dendl
;
908 mds
->clog
->info() << "denied reconnect attempt (mds is "
909 << ceph_mds_state_name(mds
->get_state())
910 << ") from " << m
->get_source_inst() << " (session is closed)";
912 } else if (mdcache
->is_readonly()) {
913 dout(1) << " read-only FS, ignoring reconnect, sending close" << dendl
;
914 mds
->clog
->info() << "denied reconnect attempt (mds is read-only)";
919 m
->get_connection()->send_message(new MClientSession(CEPH_SESSION_CLOSE
));
924 // notify client of success with an OPEN
925 m
->get_connection()->send_message(new MClientSession(CEPH_SESSION_OPEN
));
926 session
->last_cap_renew
= ceph_clock_now();
927 mds
->clog
->debug() << "reconnect by " << session
->info
.inst
<< " after " << delay
;
930 for (vector
<ceph_mds_snaprealm_reconnect
>::iterator p
= m
->realms
.begin();
931 p
!= m
->realms
.end();
933 CInode
*in
= mdcache
->get_inode(inodeno_t(p
->ino
));
934 if (in
&& in
->state_test(CInode::STATE_PURGING
))
937 assert(in
->snaprealm
);
938 if (in
->snaprealm
->have_past_parents_open()) {
939 dout(15) << "open snaprealm (w/ past parents) on " << *in
<< dendl
;
940 mdcache
->finish_snaprealm_reconnect(from
, in
->snaprealm
, snapid_t(p
->seq
));
942 dout(15) << "open snaprealm (w/o past parents) on " << *in
<< dendl
;
943 mdcache
->add_reconnected_snaprealm(from
, inodeno_t(p
->ino
), snapid_t(p
->seq
));
946 dout(15) << "open snaprealm (w/o inode) on " << inodeno_t(p
->ino
)
947 << " seq " << p
->seq
<< dendl
;
948 mdcache
->add_reconnected_snaprealm(from
, inodeno_t(p
->ino
), snapid_t(p
->seq
));
953 for (map
<inodeno_t
, cap_reconnect_t
>::iterator p
= m
->caps
.begin();
956 // make sure our last_cap_id is MAX over all issued caps
957 if (p
->second
.capinfo
.cap_id
> mdcache
->last_cap_id
)
958 mdcache
->last_cap_id
= p
->second
.capinfo
.cap_id
;
960 CInode
*in
= mdcache
->get_inode(p
->first
);
961 if (in
&& in
->state_test(CInode::STATE_PURGING
))
963 if (in
&& in
->is_auth()) {
964 // we recovered it, and it's ours. take note.
965 dout(15) << "open cap realm " << inodeno_t(p
->second
.capinfo
.snaprealm
)
966 << " on " << *in
<< dendl
;
967 in
->reconnect_cap(from
, p
->second
, session
);
968 mdcache
->add_reconnected_cap(from
, p
->first
, p
->second
);
969 recover_filelocks(in
, p
->second
.flockbl
, m
->get_orig_source().num());
973 if (in
&& !in
->is_auth()) {
975 dout(10) << "non-auth " << *in
<< ", will pass off to authority" << dendl
;
976 // add to cap export list.
977 p
->second
.path
.clear(); // we don't need path
978 mdcache
->rejoin_export_caps(p
->first
, from
, p
->second
,
979 in
->authority().first
);
981 // don't know if the inode is mine
982 dout(10) << "missing ino " << p
->first
<< ", will load later" << dendl
;
983 p
->second
.path
.clear(); // we don't need path
984 mdcache
->rejoin_recovered_caps(p
->first
, from
, p
->second
, MDS_RANK_NONE
);
988 // remove from gather set
989 client_reconnect_gather
.erase(from
);
990 if (client_reconnect_gather
.empty())
991 reconnect_gather_finish();
998 void Server::reconnect_gather_finish()
1000 dout(7) << "reconnect_gather_finish. failed on " << failed_reconnects
<< " clients" << dendl
;
1001 assert(reconnect_done
);
1002 reconnect_done
->complete(0);
1003 reconnect_done
= NULL
;
1006 void Server::reconnect_tick()
1008 if (reconnect_evicting
) {
1009 dout(4) << "reconnect_tick: waiting for evictions" << dendl
;
1013 utime_t reconnect_end
= reconnect_start
;
1014 reconnect_end
+= g_conf
->mds_reconnect_timeout
;
1015 if (ceph_clock_now() >= reconnect_end
&&
1016 !client_reconnect_gather
.empty()) {
1017 dout(10) << "reconnect timed out" << dendl
;
1019 // If we're doing blacklist evictions, use this to wait for them before
1020 // proceeding to reconnect_gather_finish
1021 MDSGatherBuilder
gather(g_ceph_context
);
1023 for (set
<client_t
>::iterator p
= client_reconnect_gather
.begin();
1024 p
!= client_reconnect_gather
.end();
1026 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(p
->v
));
1028 dout(1) << "reconnect gave up on " << session
->info
.inst
<< dendl
;
1030 mds
->clog
->warn() << "evicting unresponsive client " << *session
1031 << ", after waiting " << g_conf
->mds_reconnect_timeout
1032 << " seconds during MDS startup";
1034 if (g_conf
->mds_session_blacklist_on_timeout
) {
1035 std::stringstream ss
;
1036 mds
->evict_client(session
->info
.inst
.name
.num(), false, true, ss
,
1039 kill_session(session
, NULL
);
1042 failed_reconnects
++;
1044 client_reconnect_gather
.clear();
1046 if (gather
.has_subs()) {
1047 dout(1) << "reconnect will complete once clients are evicted" << dendl
;
1048 gather
.set_finisher(new MDSInternalContextWrapper(mds
, new FunctionContext(
1049 [this](int r
){reconnect_gather_finish();})));
1051 reconnect_evicting
= true;
1053 reconnect_gather_finish();
1058 void Server::recover_filelocks(CInode
*in
, bufferlist locks
, int64_t client
)
1060 if (!locks
.length()) return;
1063 bufferlist::iterator p
= locks
.begin();
1064 ::decode(numlocks
, p
);
1065 for (int i
= 0; i
< numlocks
; ++i
) {
1067 lock
.client
= client
;
1068 in
->get_fcntl_lock_state()->held_locks
.insert(pair
<uint64_t, ceph_filelock
>(lock
.start
, lock
));
1069 ++in
->get_fcntl_lock_state()->client_held_lock_counts
[client
];
1071 ::decode(numlocks
, p
);
1072 for (int i
= 0; i
< numlocks
; ++i
) {
1074 lock
.client
= client
;
1075 in
->get_flock_lock_state()->held_locks
.insert(pair
<uint64_t, ceph_filelock
> (lock
.start
, lock
));
1076 ++in
->get_flock_lock_state()->client_held_lock_counts
[client
];
1082 * Call this when the MDCache is oversized, to send requests to the clients
1083 * to trim some caps, and consequently unpin some inodes in the MDCache so
1084 * that it can trim too.
1086 void Server::recall_client_state(void)
1088 /* try to recall at least 80% of all caps */
1089 uint64_t max_caps_per_client
= Capability::count() * g_conf
->get_val
<double>("mds_max_ratio_caps_per_client");
1090 uint64_t min_caps_per_client
= g_conf
->get_val
<uint64_t>("mds_min_caps_per_client");
1091 if (max_caps_per_client
< min_caps_per_client
) {
1092 dout(0) << "max_caps_per_client " << max_caps_per_client
1093 << " < min_caps_per_client " << min_caps_per_client
<< dendl
;
1094 max_caps_per_client
= min_caps_per_client
+ 1;
1097 /* unless this ratio is smaller: */
1098 /* ratio: determine the amount of caps to recall from each client. Use
1099 * percentage full over the cache reservation. Cap the ratio at 80% of client
1101 double ratio
= 1.0-fmin(0.80, mdcache
->cache_toofull_ratio());
1103 dout(10) << "recall_client_state " << ratio
1104 << ", caps per client " << min_caps_per_client
<< "-" << max_caps_per_client
1107 set
<Session
*> sessions
;
1108 mds
->sessionmap
.get_client_session_set(sessions
);
1109 for (auto &session
: sessions
) {
1110 if (!session
->is_open() ||
1111 !session
->info
.inst
.name
.is_client())
1114 dout(10) << " session " << session
->info
.inst
1115 << " caps " << session
->caps
.size()
1116 << ", leases " << session
->leases
.size()
1119 uint64_t newlim
= MAX(MIN((session
->caps
.size() * ratio
), max_caps_per_client
), min_caps_per_client
);
1120 if (session
->caps
.size() > newlim
) {
1121 MClientSession
*m
= new MClientSession(CEPH_SESSION_RECALL_STATE
);
1122 m
->head
.max_caps
= newlim
;
1123 mds
->send_message_client(m
, session
);
1124 session
->notify_recall_sent(newlim
);
1129 void Server::force_clients_readonly()
1131 dout(10) << "force_clients_readonly" << dendl
;
1132 set
<Session
*> sessions
;
1133 mds
->sessionmap
.get_client_session_set(sessions
);
1134 for (set
<Session
*>::const_iterator p
= sessions
.begin();
1135 p
!= sessions
.end();
1137 Session
*session
= *p
;
1138 if (!session
->info
.inst
.name
.is_client() ||
1139 !(session
->is_open() || session
->is_stale()))
1141 mds
->send_message_client(new MClientSession(CEPH_SESSION_FORCE_RO
), session
);
1146 * some generic stuff for finishing off requests
1148 void Server::journal_and_reply(MDRequestRef
& mdr
, CInode
*in
, CDentry
*dn
, LogEvent
*le
, MDSLogContextBase
*fin
)
1150 dout(10) << "journal_and_reply tracei " << in
<< " tracedn " << dn
<< dendl
;
1151 assert(!mdr
->has_completed
);
1153 // note trace items for eventual reply.
1162 early_reply(mdr
, in
, dn
);
1164 mdr
->committing
= true;
1165 submit_mdlog_entry(le
, fin
, mdr
, __func__
);
1167 if (mdr
->client_request
&& mdr
->client_request
->is_queued_for_replay()) {
1168 if (mds
->queue_one_replay()) {
1169 dout(10) << " queued next replay op" << dendl
;
1171 dout(10) << " journaled last replay op, flushing" << dendl
;
1174 } else if (mdr
->did_early_reply
)
1175 mds
->locker
->drop_rdlocks(mdr
.get());
1180 void Server::submit_mdlog_entry(LogEvent
*le
, MDSLogContextBase
*fin
, MDRequestRef
& mdr
,
1184 string
event_str("submit entry: ");
1186 mdr
->mark_event_string(event_str
);
1188 mdlog
->submit_entry(le
, fin
);
1192 * send response built from mdr contents and error code; clean up mdr
1194 void Server::respond_to_request(MDRequestRef
& mdr
, int r
)
1196 if (mdr
->client_request
) {
1197 reply_client_request(mdr
, new MClientReply(mdr
->client_request
, r
));
1199 // add here to avoid counting ops multiple times (e.g., locks, loading)
1200 switch(mdr
->client_request
->get_op()) {
1201 case CEPH_MDS_OP_LOOKUPHASH
:
1202 logger
->inc(l_mdss_req_lookuphash
);
1204 case CEPH_MDS_OP_LOOKUPINO
:
1205 logger
->inc(l_mdss_req_lookupino
);
1207 case CEPH_MDS_OP_LOOKUPPARENT
:
1208 logger
->inc(l_mdss_req_lookupparent
);
1210 case CEPH_MDS_OP_LOOKUPNAME
:
1211 logger
->inc(l_mdss_req_lookupname
);
1213 case CEPH_MDS_OP_LOOKUP
:
1214 logger
->inc(l_mdss_req_lookup
);
1216 case CEPH_MDS_OP_LOOKUPSNAP
:
1217 logger
->inc(l_mdss_req_lookupsnap
);
1219 case CEPH_MDS_OP_GETATTR
:
1220 logger
->inc(l_mdss_req_getattr
);
1222 case CEPH_MDS_OP_SETATTR
:
1223 logger
->inc(l_mdss_req_setattr
);
1225 case CEPH_MDS_OP_SETLAYOUT
:
1226 logger
->inc(l_mdss_req_setlayout
);
1228 case CEPH_MDS_OP_SETDIRLAYOUT
:
1229 logger
->inc(l_mdss_req_setdirlayout
);
1231 case CEPH_MDS_OP_SETXATTR
:
1232 logger
->inc(l_mdss_req_setxattr
);
1234 case CEPH_MDS_OP_RMXATTR
:
1235 logger
->inc(l_mdss_req_rmxattr
);
1237 case CEPH_MDS_OP_READDIR
:
1238 logger
->inc(l_mdss_req_readdir
);
1240 case CEPH_MDS_OP_SETFILELOCK
:
1241 logger
->inc(l_mdss_req_setfilelock
);
1243 case CEPH_MDS_OP_GETFILELOCK
:
1244 logger
->inc(l_mdss_req_getfilelock
);
1246 case CEPH_MDS_OP_CREATE
:
1247 logger
->inc(l_mdss_req_create
);
1248 case CEPH_MDS_OP_OPEN
:
1249 logger
->inc(l_mdss_req_open
);
1251 case CEPH_MDS_OP_MKNOD
:
1252 logger
->inc(l_mdss_req_mknod
);
1254 case CEPH_MDS_OP_LINK
:
1255 logger
->inc(l_mdss_req_link
);
1257 case CEPH_MDS_OP_UNLINK
:
1258 logger
->inc(l_mdss_req_unlink
);
1260 case CEPH_MDS_OP_RMDIR
:
1261 logger
->inc(l_mdss_req_rmdir
);
1263 case CEPH_MDS_OP_RENAME
:
1264 logger
->inc(l_mdss_req_rename
);
1266 case CEPH_MDS_OP_MKDIR
:
1267 logger
->inc(l_mdss_req_mkdir
);
1269 case CEPH_MDS_OP_SYMLINK
:
1270 logger
->inc(l_mdss_req_symlink
);
1272 case CEPH_MDS_OP_LSSNAP
:
1273 logger
->inc(l_mdss_req_lssnap
);
1275 case CEPH_MDS_OP_MKSNAP
:
1276 logger
->inc(l_mdss_req_mksnap
);
1278 case CEPH_MDS_OP_RMSNAP
:
1279 logger
->inc(l_mdss_req_rmsnap
);
1281 case CEPH_MDS_OP_RENAMESNAP
:
1282 logger
->inc(l_mdss_req_renamesnap
);
1285 } else if (mdr
->internal_op
> -1) {
1286 dout(10) << "respond_to_request on internal request " << mdr
<< dendl
;
1287 if (!mdr
->internal_op_finish
)
1288 assert(0 == "trying to respond to internal op without finisher");
1289 mdr
->internal_op_finish
->complete(r
);
1290 mdcache
->request_finish(mdr
);
1294 void Server::early_reply(MDRequestRef
& mdr
, CInode
*tracei
, CDentry
*tracedn
)
1296 if (!g_conf
->mds_early_reply
)
1299 if (mdr
->has_more() && mdr
->more()->has_journaled_slaves
) {
1300 dout(10) << "early_reply - there are journaled slaves, not allowed." << dendl
;
1304 if (mdr
->alloc_ino
) {
1305 dout(10) << "early_reply - allocated ino, not allowed" << dendl
;
1309 MClientRequest
*req
= mdr
->client_request
;
1310 entity_inst_t client_inst
= req
->get_source_inst();
1311 if (client_inst
.name
.is_mds())
1314 if (req
->is_replay()) {
1315 dout(10) << " no early reply on replay op" << dendl
;
1320 MClientReply
*reply
= new MClientReply(req
, 0);
1321 reply
->set_unsafe();
1323 // mark xlocks "done", indicating that we are exposing uncommitted changes.
1325 //_rename_finish() does not send dentry link/unlink message to replicas.
1326 // so do not set xlocks on dentries "done", the xlocks prevent dentries
1327 // that have projected linkages from getting new replica.
1328 mds
->locker
->set_xlocks_done(mdr
.get(), req
->get_op() == CEPH_MDS_OP_RENAME
);
1330 dout(10) << "early_reply " << reply
->get_result()
1331 << " (" << cpp_strerror(reply
->get_result())
1332 << ") " << *req
<< dendl
;
1334 if (tracei
|| tracedn
) {
1336 mdr
->cap_releases
.erase(tracei
->vino());
1338 mdr
->cap_releases
.erase(tracedn
->get_dir()->get_inode()->vino());
1340 set_trace_dist(mdr
->session
, reply
, tracei
, tracedn
, mdr
->snapid
,
1341 req
->get_dentry_wanted(), mdr
);
1344 reply
->set_extra_bl(mdr
->reply_extra_bl
);
1345 req
->get_connection()->send_message(reply
);
1347 mdr
->did_early_reply
= true;
1349 mds
->logger
->inc(l_mds_reply
);
1350 utime_t lat
= ceph_clock_now() - req
->get_recv_stamp();
1351 mds
->logger
->tinc(l_mds_reply_latency
, lat
);
1352 dout(20) << "lat " << lat
<< dendl
;
1354 mdr
->mark_event("early_replied");
1359 * include a trace to tracei
1362 void Server::reply_client_request(MDRequestRef
& mdr
, MClientReply
*reply
)
1365 MClientRequest
*req
= mdr
->client_request
;
1367 dout(7) << "reply_client_request " << reply
->get_result()
1368 << " (" << cpp_strerror(reply
->get_result())
1369 << ") " << *req
<< dendl
;
1371 mdr
->mark_event("replying");
1373 Session
*session
= mdr
->session
;
1375 // note successful request in session map?
1377 // setfilelock requests are special, they only modify states in MDS memory.
1378 // The states get lost when MDS fails. If Client re-send a completed
1379 // setfilelock request, it means that client did not receive corresponding
1380 // setfilelock reply. So MDS should re-execute the setfilelock request.
1381 if (req
->may_write() && req
->get_op() != CEPH_MDS_OP_SETFILELOCK
&&
1382 reply
->get_result() == 0 && session
) {
1383 inodeno_t created
= mdr
->alloc_ino
? mdr
->alloc_ino
: mdr
->used_prealloc_ino
;
1384 session
->add_completed_request(mdr
->reqid
.tid
, created
);
1386 mdr
->ls
->touched_sessions
.insert(session
->info
.inst
.name
);
1390 // give any preallocated inos to the session
1391 apply_allocated_inos(mdr
, session
);
1393 // get tracei/tracedn from mdr?
1394 snapid_t snapid
= mdr
->snapid
;
1395 CInode
*tracei
= mdr
->tracei
;
1396 CDentry
*tracedn
= mdr
->tracedn
;
1398 bool is_replay
= mdr
->client_request
->is_replay();
1399 bool did_early_reply
= mdr
->did_early_reply
;
1400 entity_inst_t client_inst
= req
->get_source_inst();
1401 int dentry_wanted
= req
->get_dentry_wanted();
1403 if (!did_early_reply
&& !is_replay
) {
1405 mds
->logger
->inc(l_mds_reply
);
1406 utime_t lat
= ceph_clock_now() - mdr
->client_request
->get_recv_stamp();
1407 mds
->logger
->tinc(l_mds_reply_latency
, lat
);
1408 dout(20) << "lat " << lat
<< dendl
;
1411 mdr
->cap_releases
.erase(tracei
->vino());
1413 mdr
->cap_releases
.erase(tracedn
->get_dir()->get_inode()->vino());
1416 // drop non-rdlocks before replying, so that we can issue leases
1417 mdcache
->request_drop_non_rdlocks(mdr
);
1420 if (client_inst
.name
.is_mds() || !session
) {
1421 reply
->put(); // mds doesn't need a reply
1425 if (!did_early_reply
&& // don't issue leases if we sent an earlier reply already
1426 (tracei
|| tracedn
)) {
1429 mdcache
->try_reconnect_cap(tracei
, session
);
1431 // include metadata in reply
1432 set_trace_dist(session
, reply
, tracei
, tracedn
,
1433 snapid
, dentry_wanted
,
1438 // We can set the extra bl unconditionally: if it's already been sent in the
1439 // early_reply, set_extra_bl will have claimed it and reply_extra_bl is empty
1440 reply
->set_extra_bl(mdr
->reply_extra_bl
);
1442 reply
->set_mdsmap_epoch(mds
->mdsmap
->get_epoch());
1443 req
->get_connection()->send_message(reply
);
1446 if (req
->is_queued_for_replay() &&
1447 (mdr
->has_completed
|| reply
->get_result() < 0)) {
1448 if (reply
->get_result() < 0) {
1449 int r
= reply
->get_result();
1450 derr
<< "reply_client_request: failed to replay " << *req
1451 << " error " << r
<< " (" << cpp_strerror(r
) << ")" << dendl
;
1452 mds
->clog
->warn() << "failed to replay " << req
->get_reqid() << " error " << r
;
1454 mds
->queue_one_replay();
1458 mdcache
->request_finish(mdr
);
1460 // take a closer look at tracei, if it happens to be a remote link
1463 tracedn
->get_projected_linkage()->is_remote()) {
1464 mdcache
->eval_remote(tracedn
);
1469 void Server::encode_empty_dirstat(bufferlist
& bl
)
1471 static DirStat empty
;
1475 void Server::encode_infinite_lease(bufferlist
& bl
)
1482 dout(20) << "encode_infinite_lease " << e
<< dendl
;
1485 void Server::encode_null_lease(bufferlist
& bl
)
1492 dout(20) << "encode_null_lease " << e
<< dendl
;
1497 * pass inode OR dentry (not both, or we may get confused)
1499 * trace is in reverse order (i.e. root inode comes last)
1501 void Server::set_trace_dist(Session
*session
, MClientReply
*reply
,
1502 CInode
*in
, CDentry
*dn
,
1507 // skip doing this for debugging purposes?
1508 if (g_conf
->mds_inject_traceless_reply_probability
&&
1509 mdr
->ls
&& !mdr
->o_trunc
&&
1510 (rand() % 10000 < g_conf
->mds_inject_traceless_reply_probability
* 10000.0)) {
1511 dout(5) << "deliberately skipping trace for " << *reply
<< dendl
;
1515 // inode, dentry, dir, ..., inode
1517 mds_rank_t whoami
= mds
->get_nodeid();
1518 client_t client
= session
->get_client();
1519 utime_t now
= ceph_clock_now();
1521 dout(20) << "set_trace_dist snapid " << snapid
<< dendl
;
1523 //assert((bool)dn == (bool)dentry_wanted); // not true for snapshot lookups
1526 if (snapid
== CEPH_NOSNAP
) {
1529 realm
= in
->find_snaprealm();
1531 realm
= dn
->get_dir()->get_inode()->find_snaprealm();
1532 reply
->snapbl
= realm
->get_snap_trace();
1533 dout(10) << "set_trace_dist snaprealm " << *realm
<< " len=" << reply
->snapbl
.length() << dendl
;
1538 reply
->head
.is_dentry
= 1;
1539 CDir
*dir
= dn
->get_dir();
1540 CInode
*diri
= dir
->get_inode();
1542 diri
->encode_inodestat(bl
, session
, NULL
, snapid
);
1543 dout(20) << "set_trace_dist added diri " << *diri
<< dendl
;
1545 #ifdef MDS_VERIFY_FRAGSTAT
1546 if (dir
->is_complete())
1547 dir
->verify_fragstat();
1549 dir
->encode_dirstat(bl
, whoami
);
1550 dout(20) << "set_trace_dist added dir " << *dir
<< dendl
;
1552 ::encode(dn
->get_name(), bl
);
1553 if (snapid
== CEPH_NOSNAP
)
1554 mds
->locker
->issue_client_lease(dn
, client
, bl
, now
, session
);
1556 encode_null_lease(bl
);
1557 dout(20) << "set_trace_dist added dn " << snapid
<< " " << *dn
<< dendl
;
1559 reply
->head
.is_dentry
= 0;
1563 in
->encode_inodestat(bl
, session
, NULL
, snapid
, 0, mdr
->getattr_caps
);
1564 dout(20) << "set_trace_dist added in " << *in
<< dendl
;
1565 reply
->head
.is_target
= 1;
1567 reply
->head
.is_target
= 0;
1569 reply
->set_trace(bl
);
1576 * process a client request
1577 * This function DOES put the passed message before returning
1579 void Server::handle_client_request(MClientRequest
*req
)
1581 dout(4) << "handle_client_request " << *req
<< dendl
;
1584 mds
->logger
->inc(l_mds_request
);
1586 logger
->inc(l_mdss_handle_client_request
);
1588 if (!mdcache
->is_open()) {
1589 dout(5) << "waiting for root" << dendl
;
1590 mdcache
->wait_for_open(new C_MDS_RetryMessage(mds
, req
));
1595 Session
*session
= 0;
1596 if (req
->get_source().is_client()) {
1597 session
= get_session(req
);
1599 dout(5) << "no session for " << req
->get_source() << ", dropping" << dendl
;
1600 } else if (session
->is_closed() ||
1601 session
->is_closing() ||
1602 session
->is_killing()) {
1603 dout(5) << "session closed|closing|killing, dropping" << dendl
;
1607 if (req
->is_queued_for_replay())
1608 mds
->queue_one_replay();
1615 if (req
->get_mdsmap_epoch() < mds
->mdsmap
->get_epoch()) {
1616 // send it? hrm, this isn't ideal; they may get a lot of copies if
1617 // they have a high request rate.
1620 // completed request?
1621 bool has_completed
= false;
1622 if (req
->is_replay() || req
->get_retry_attempt()) {
1625 if (session
->have_completed_request(req
->get_reqid().tid
, &created
)) {
1626 has_completed
= true;
1627 // Don't send traceless reply if the completed request has created
1628 // new inode. Treat the request as lookup request instead.
1629 if (req
->is_replay() ||
1630 ((created
== inodeno_t() || !mds
->is_clientreplay()) &&
1631 req
->get_op() != CEPH_MDS_OP_OPEN
&&
1632 req
->get_op() != CEPH_MDS_OP_CREATE
)) {
1633 dout(5) << "already completed " << req
->get_reqid() << dendl
;
1634 MClientReply
*reply
= new MClientReply(req
, 0);
1635 if (created
!= inodeno_t()) {
1637 ::encode(created
, extra
);
1638 reply
->set_extra_bl(extra
);
1640 req
->get_connection()->send_message(reply
);
1642 if (req
->is_queued_for_replay())
1643 mds
->queue_one_replay();
1648 if (req
->get_op() != CEPH_MDS_OP_OPEN
&&
1649 req
->get_op() != CEPH_MDS_OP_CREATE
) {
1650 dout(10) << " completed request which created new inode " << created
1651 << ", convert it to lookup request" << dendl
;
1652 req
->head
.op
= req
->get_dentry_wanted() ? CEPH_MDS_OP_LOOKUP
: CEPH_MDS_OP_GETATTR
;
1653 req
->head
.args
.getattr
.mask
= CEPH_STAT_CAP_INODE_ALL
;
1658 // trim completed_request list
1659 if (req
->get_oldest_client_tid() > 0) {
1660 dout(15) << " oldest_client_tid=" << req
->get_oldest_client_tid() << dendl
;
1662 if (session
->trim_completed_requests(req
->get_oldest_client_tid())) {
1663 // Sessions 'completed_requests' was dirtied, mark it to be
1664 // potentially flushed at segment expiry.
1665 mdlog
->get_current_segment()->touched_sessions
.insert(session
->info
.inst
.name
);
1667 if (session
->get_num_trim_requests_warnings() > 0 &&
1668 session
->get_num_completed_requests() * 2 < g_conf
->mds_max_completed_requests
)
1669 session
->reset_num_trim_requests_warnings();
1671 if (session
->get_num_completed_requests() >=
1672 (g_conf
->mds_max_completed_requests
<< session
->get_num_trim_requests_warnings())) {
1673 session
->inc_num_trim_requests_warnings();
1675 ss
<< "client." << session
->get_client() << " does not advance its oldest_client_tid ("
1676 << req
->get_oldest_client_tid() << "), "
1677 << session
->get_num_completed_requests()
1678 << " completed requests recorded in session\n";
1679 mds
->clog
->warn() << ss
.str();
1680 dout(20) << __func__
<< " " << ss
.str() << dendl
;
1685 // register + dispatch
1686 MDRequestRef mdr
= mdcache
->request_start(req
);
1691 mdr
->session
= session
;
1692 session
->requests
.push_back(&mdr
->item_session_request
);
1696 mdr
->has_completed
= true;
1698 // process embedded cap releases?
1699 // (only if NOT replay!)
1700 if (!req
->releases
.empty() && req
->get_source().is_client() && !req
->is_replay()) {
1701 client_t client
= req
->get_source().num();
1702 for (vector
<MClientRequest::Release
>::iterator p
= req
->releases
.begin();
1703 p
!= req
->releases
.end();
1705 mds
->locker
->process_request_cap_release(mdr
, client
, p
->item
, p
->dname
);
1706 req
->releases
.clear();
1709 dispatch_client_request(mdr
);
1713 void Server::handle_osd_map()
1715 /* Note that we check the OSDMAP_FULL flag directly rather than
1716 * using osdmap_full_flag(), because we want to know "is the flag set"
1717 * rather than "does the flag apply to us?" */
1718 mds
->objecter
->with_osdmap([this](const OSDMap
& o
) {
1719 is_full
= o
.test_flag(CEPH_OSDMAP_FULL
);
1720 dout(7) << __func__
<< ": full = " << is_full
<< " epoch = "
1721 << o
.get_epoch() << dendl
;
1725 void Server::dispatch_client_request(MDRequestRef
& mdr
)
1727 // we shouldn't be waiting on anyone.
1728 assert(!mdr
->has_more() || mdr
->more()->waiting_on_slave
.empty());
1731 dout(10) << "request " << *mdr
<< " was killed" << dendl
;
1735 MClientRequest
*req
= mdr
->client_request
;
1737 if (logger
) logger
->inc(l_mdss_dispatch_client_request
);
1739 dout(7) << "dispatch_client_request " << *req
<< dendl
;
1741 if (req
->may_write()) {
1742 if (mdcache
->is_readonly()) {
1743 dout(10) << " read-only FS" << dendl
;
1744 respond_to_request(mdr
, -EROFS
);
1747 if (mdr
->has_more() && mdr
->more()->slave_error
) {
1748 dout(10) << " got error from slaves" << dendl
;
1749 respond_to_request(mdr
, mdr
->more()->slave_error
);
1755 if (req
->get_op() == CEPH_MDS_OP_SETLAYOUT
||
1756 req
->get_op() == CEPH_MDS_OP_SETDIRLAYOUT
||
1757 req
->get_op() == CEPH_MDS_OP_SETLAYOUT
||
1758 req
->get_op() == CEPH_MDS_OP_RMXATTR
||
1759 req
->get_op() == CEPH_MDS_OP_SETXATTR
||
1760 req
->get_op() == CEPH_MDS_OP_CREATE
||
1761 req
->get_op() == CEPH_MDS_OP_SYMLINK
||
1762 req
->get_op() == CEPH_MDS_OP_MKSNAP
||
1763 ((req
->get_op() == CEPH_MDS_OP_LINK
||
1764 req
->get_op() == CEPH_MDS_OP_RENAME
) &&
1765 (!mdr
->has_more() || mdr
->more()->witnessed
.empty())) // haven't started slave request
1768 dout(20) << __func__
<< ": full, responding ENOSPC to op " << ceph_mds_op_name(req
->get_op()) << dendl
;
1769 respond_to_request(mdr
, -ENOSPC
);
1772 dout(20) << __func__
<< ": full, permitting op " << ceph_mds_op_name(req
->get_op()) << dendl
;
1776 switch (req
->get_op()) {
1777 case CEPH_MDS_OP_LOOKUPHASH
:
1778 case CEPH_MDS_OP_LOOKUPINO
:
1779 handle_client_lookup_ino(mdr
, false, false);
1781 case CEPH_MDS_OP_LOOKUPPARENT
:
1782 handle_client_lookup_ino(mdr
, true, false);
1784 case CEPH_MDS_OP_LOOKUPNAME
:
1785 handle_client_lookup_ino(mdr
, false, true);
1789 case CEPH_MDS_OP_LOOKUP
:
1790 handle_client_getattr(mdr
, true);
1793 case CEPH_MDS_OP_LOOKUPSNAP
:
1794 // lookupsnap does not reference a CDentry; treat it as a getattr
1795 case CEPH_MDS_OP_GETATTR
:
1796 handle_client_getattr(mdr
, false);
1799 case CEPH_MDS_OP_SETATTR
:
1800 handle_client_setattr(mdr
);
1802 case CEPH_MDS_OP_SETLAYOUT
:
1803 handle_client_setlayout(mdr
);
1805 case CEPH_MDS_OP_SETDIRLAYOUT
:
1806 handle_client_setdirlayout(mdr
);
1808 case CEPH_MDS_OP_SETXATTR
:
1809 handle_client_setxattr(mdr
);
1811 case CEPH_MDS_OP_RMXATTR
:
1812 handle_client_removexattr(mdr
);
1815 case CEPH_MDS_OP_READDIR
:
1816 handle_client_readdir(mdr
);
1819 case CEPH_MDS_OP_SETFILELOCK
:
1820 handle_client_file_setlock(mdr
);
1823 case CEPH_MDS_OP_GETFILELOCK
:
1824 handle_client_file_readlock(mdr
);
1828 case CEPH_MDS_OP_CREATE
:
1829 if (mdr
->has_completed
)
1830 handle_client_open(mdr
); // already created.. just open
1832 handle_client_openc(mdr
);
1835 case CEPH_MDS_OP_OPEN
:
1836 handle_client_open(mdr
);
1841 case CEPH_MDS_OP_MKNOD
:
1842 handle_client_mknod(mdr
);
1844 case CEPH_MDS_OP_LINK
:
1845 handle_client_link(mdr
);
1847 case CEPH_MDS_OP_UNLINK
:
1848 case CEPH_MDS_OP_RMDIR
:
1849 handle_client_unlink(mdr
);
1851 case CEPH_MDS_OP_RENAME
:
1852 handle_client_rename(mdr
);
1854 case CEPH_MDS_OP_MKDIR
:
1855 handle_client_mkdir(mdr
);
1857 case CEPH_MDS_OP_SYMLINK
:
1858 handle_client_symlink(mdr
);
1863 case CEPH_MDS_OP_LSSNAP
:
1864 handle_client_lssnap(mdr
);
1866 case CEPH_MDS_OP_MKSNAP
:
1867 handle_client_mksnap(mdr
);
1869 case CEPH_MDS_OP_RMSNAP
:
1870 handle_client_rmsnap(mdr
);
1872 case CEPH_MDS_OP_RENAMESNAP
:
1873 handle_client_renamesnap(mdr
);
1877 dout(1) << " unknown client op " << req
->get_op() << dendl
;
1878 respond_to_request(mdr
, -EOPNOTSUPP
);
1883 // ---------------------------------------
1886 /* This function DOES put the passed message before returning*/
1887 void Server::handle_slave_request(MMDSSlaveRequest
*m
)
1889 dout(4) << "handle_slave_request " << m
->get_reqid() << " from " << m
->get_source() << dendl
;
1890 mds_rank_t from
= mds_rank_t(m
->get_source().num());
1892 if (logger
) logger
->inc(l_mdss_handle_slave_request
);
1896 return handle_slave_request_reply(m
);
1898 // the purpose of rename notify is enforcing causal message ordering. making sure
1899 // bystanders have received all messages from rename srcdn's auth MDS.
1900 if (m
->get_op() == MMDSSlaveRequest::OP_RENAMENOTIFY
) {
1901 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(m
->get_reqid(), m
->get_attempt(),
1902 MMDSSlaveRequest::OP_RENAMENOTIFYACK
);
1903 mds
->send_message(reply
, m
->get_connection());
1908 CDentry
*straydn
= NULL
;
1909 if (m
->stray
.length() > 0) {
1910 straydn
= mdcache
->add_replica_stray(m
->stray
, from
);
1915 // am i a new slave?
1917 if (mdcache
->have_request(m
->get_reqid())) {
1919 mdr
= mdcache
->request_get(m
->get_reqid());
1921 // is my request newer?
1922 if (mdr
->attempt
> m
->get_attempt()) {
1923 dout(10) << "local request " << *mdr
<< " attempt " << mdr
->attempt
<< " > " << m
->get_attempt()
1924 << ", dropping " << *m
<< dendl
;
1930 if (mdr
->attempt
< m
->get_attempt()) {
1931 // mine is old, close it out
1932 dout(10) << "local request " << *mdr
<< " attempt " << mdr
->attempt
<< " < " << m
->get_attempt()
1933 << ", closing out" << dendl
;
1934 mdcache
->request_finish(mdr
);
1936 } else if (mdr
->slave_to_mds
!= from
) {
1937 dout(10) << "local request " << *mdr
<< " not slave to mds." << from
<< dendl
;
1942 if (m
->get_op() == MMDSSlaveRequest::OP_FINISH
&& m
->is_abort()) {
1943 mdr
->aborted
= true;
1944 if (mdr
->slave_request
) {
1945 // only abort on-going xlock, wrlock and auth pin
1946 assert(!mdr
->slave_did_prepare());
1948 mdcache
->request_finish(mdr
);
1955 if (m
->get_op() == MMDSSlaveRequest::OP_FINISH
) {
1956 dout(10) << "missing slave request for " << m
->get_reqid()
1957 << " OP_FINISH, must have lost race with a forward" << dendl
;
1961 mdr
= mdcache
->request_start_slave(m
->get_reqid(), m
->get_attempt(), m
);
1962 mdr
->set_op_stamp(m
->op_stamp
);
1964 assert(mdr
->slave_request
== 0); // only one at a time, please!
1968 mdr
->straydn
= straydn
;
1971 if (!mds
->is_clientreplay() && !mds
->is_active() && !mds
->is_stopping()) {
1972 dout(3) << "not clientreplay|active yet, waiting" << dendl
;
1973 mds
->wait_for_replay(new C_MDS_RetryMessage(mds
, m
));
1975 } else if (mds
->is_clientreplay() && !mds
->mdsmap
->is_clientreplay(from
) &&
1976 mdr
->locks
.empty()) {
1977 dout(3) << "not active yet, waiting" << dendl
;
1978 mds
->wait_for_active(new C_MDS_RetryMessage(mds
, m
));
1982 mdr
->slave_request
= m
;
1984 dispatch_slave_request(mdr
);
1987 /* This function DOES put the passed message before returning*/
1988 void Server::handle_slave_request_reply(MMDSSlaveRequest
*m
)
1990 mds_rank_t from
= mds_rank_t(m
->get_source().num());
1992 if (!mds
->is_clientreplay() && !mds
->is_active() && !mds
->is_stopping()) {
1993 metareqid_t r
= m
->get_reqid();
1994 if (!mdcache
->have_uncommitted_master(r
, from
)) {
1995 dout(10) << "handle_slave_request_reply ignoring slave reply from mds."
1996 << from
<< " reqid " << r
<< dendl
;
2000 dout(3) << "not clientreplay|active yet, waiting" << dendl
;
2001 mds
->wait_for_replay(new C_MDS_RetryMessage(mds
, m
));
2005 if (m
->get_op() == MMDSSlaveRequest::OP_COMMITTED
) {
2006 metareqid_t r
= m
->get_reqid();
2007 mdcache
->committed_master_slave(r
, from
);
2012 MDRequestRef mdr
= mdcache
->request_get(m
->get_reqid());
2013 if (m
->get_attempt() != mdr
->attempt
) {
2014 dout(10) << "handle_slave_request_reply " << *mdr
<< " ignoring reply from other attempt "
2015 << m
->get_attempt() << dendl
;
2020 switch (m
->get_op()) {
2021 case MMDSSlaveRequest::OP_XLOCKACK
:
2023 // identify lock, master request
2024 SimpleLock
*lock
= mds
->locker
->get_lock(m
->get_lock_type(),
2025 m
->get_object_info());
2026 mdr
->more()->slaves
.insert(from
);
2027 dout(10) << "got remote xlock on " << *lock
<< " on " << *lock
->get_parent() << dendl
;
2028 mdr
->xlocks
.insert(lock
);
2029 mdr
->locks
.insert(lock
);
2030 mdr
->finish_locking(lock
);
2031 lock
->get_xlock(mdr
, mdr
->get_client());
2033 assert(mdr
->more()->waiting_on_slave
.count(from
));
2034 mdr
->more()->waiting_on_slave
.erase(from
);
2035 assert(mdr
->more()->waiting_on_slave
.empty());
2036 mdcache
->dispatch_request(mdr
);
2040 case MMDSSlaveRequest::OP_WRLOCKACK
:
2042 // identify lock, master request
2043 SimpleLock
*lock
= mds
->locker
->get_lock(m
->get_lock_type(),
2044 m
->get_object_info());
2045 mdr
->more()->slaves
.insert(from
);
2046 dout(10) << "got remote wrlock on " << *lock
<< " on " << *lock
->get_parent() << dendl
;
2047 mdr
->remote_wrlocks
[lock
] = from
;
2048 mdr
->locks
.insert(lock
);
2049 mdr
->finish_locking(lock
);
2051 assert(mdr
->more()->waiting_on_slave
.count(from
));
2052 mdr
->more()->waiting_on_slave
.erase(from
);
2053 assert(mdr
->more()->waiting_on_slave
.empty());
2054 mdcache
->dispatch_request(mdr
);
2058 case MMDSSlaveRequest::OP_AUTHPINACK
:
2059 handle_slave_auth_pin_ack(mdr
, m
);
2062 case MMDSSlaveRequest::OP_LINKPREPACK
:
2063 handle_slave_link_prep_ack(mdr
, m
);
2066 case MMDSSlaveRequest::OP_RMDIRPREPACK
:
2067 handle_slave_rmdir_prep_ack(mdr
, m
);
2070 case MMDSSlaveRequest::OP_RENAMEPREPACK
:
2071 handle_slave_rename_prep_ack(mdr
, m
);
2074 case MMDSSlaveRequest::OP_RENAMENOTIFYACK
:
2075 handle_slave_rename_notify_ack(mdr
, m
);
2086 /* This function DOES put the mdr->slave_request before returning*/
2087 void Server::dispatch_slave_request(MDRequestRef
& mdr
)
2089 dout(7) << "dispatch_slave_request " << *mdr
<< " " << *mdr
->slave_request
<< dendl
;
2092 dout(7) << " abort flag set, finishing" << dendl
;
2093 mdcache
->request_finish(mdr
);
2097 if (logger
) logger
->inc(l_mdss_dispatch_slave_request
);
2099 int op
= mdr
->slave_request
->get_op();
2101 case MMDSSlaveRequest::OP_XLOCK
:
2102 case MMDSSlaveRequest::OP_WRLOCK
:
2105 SimpleLock
*lock
= mds
->locker
->get_lock(mdr
->slave_request
->get_lock_type(),
2106 mdr
->slave_request
->get_object_info());
2109 dout(10) << "don't have object, dropping" << dendl
;
2110 ceph_abort(); // can this happen, if we auth pinned properly.
2112 if (op
== MMDSSlaveRequest::OP_XLOCK
&& !lock
->get_parent()->is_auth()) {
2113 dout(10) << "not auth for remote xlock attempt, dropping on "
2114 << *lock
<< " on " << *lock
->get_parent() << dendl
;
2116 // use acquire_locks so that we get auth_pinning.
2117 set
<SimpleLock
*> rdlocks
;
2118 set
<SimpleLock
*> wrlocks
= mdr
->wrlocks
;
2119 set
<SimpleLock
*> xlocks
= mdr
->xlocks
;
2123 case MMDSSlaveRequest::OP_XLOCK
:
2124 xlocks
.insert(lock
);
2125 replycode
= MMDSSlaveRequest::OP_XLOCKACK
;
2127 case MMDSSlaveRequest::OP_WRLOCK
:
2128 wrlocks
.insert(lock
);
2129 replycode
= MMDSSlaveRequest::OP_WRLOCKACK
;
2133 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
2137 MMDSSlaveRequest
*r
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, replycode
);
2138 r
->set_lock_type(lock
->get_type());
2139 lock
->get_parent()->set_object_info(r
->get_object_info());
2140 mds
->send_message(r
, mdr
->slave_request
->get_connection());
2144 mdr
->slave_request
->put();
2145 mdr
->slave_request
= 0;
2149 case MMDSSlaveRequest::OP_UNXLOCK
:
2150 case MMDSSlaveRequest::OP_UNWRLOCK
:
2152 SimpleLock
*lock
= mds
->locker
->get_lock(mdr
->slave_request
->get_lock_type(),
2153 mdr
->slave_request
->get_object_info());
2155 bool need_issue
= false;
2157 case MMDSSlaveRequest::OP_UNXLOCK
:
2158 mds
->locker
->xlock_finish(lock
, mdr
.get(), &need_issue
);
2160 case MMDSSlaveRequest::OP_UNWRLOCK
:
2161 mds
->locker
->wrlock_finish(lock
, mdr
.get(), &need_issue
);
2165 mds
->locker
->issue_caps(static_cast<CInode
*>(lock
->get_parent()));
2167 // done. no ack necessary.
2168 mdr
->slave_request
->put();
2169 mdr
->slave_request
= 0;
2173 case MMDSSlaveRequest::OP_DROPLOCKS
:
2174 mds
->locker
->drop_locks(mdr
.get());
2175 mdr
->slave_request
->put();
2176 mdr
->slave_request
= 0;
2179 case MMDSSlaveRequest::OP_AUTHPIN
:
2180 handle_slave_auth_pin(mdr
);
2183 case MMDSSlaveRequest::OP_LINKPREP
:
2184 case MMDSSlaveRequest::OP_UNLINKPREP
:
2185 handle_slave_link_prep(mdr
);
2188 case MMDSSlaveRequest::OP_RMDIRPREP
:
2189 handle_slave_rmdir_prep(mdr
);
2192 case MMDSSlaveRequest::OP_RENAMEPREP
:
2193 handle_slave_rename_prep(mdr
);
2196 case MMDSSlaveRequest::OP_FINISH
:
2197 // information about rename imported caps
2198 if (mdr
->slave_request
->inode_export
.length() > 0)
2199 mdr
->more()->inode_import
.claim(mdr
->slave_request
->inode_export
);
2200 // finish off request.
2201 mdcache
->request_finish(mdr
);
2209 /* This function DOES put the mdr->slave_request before returning*/
2210 void Server::handle_slave_auth_pin(MDRequestRef
& mdr
)
2212 dout(10) << "handle_slave_auth_pin " << *mdr
<< dendl
;
2214 // build list of objects
2215 list
<MDSCacheObject
*> objects
;
2216 CInode
*auth_pin_freeze
= NULL
;
2217 bool fail
= false, wouldblock
= false, readonly
= false;
2219 if (mdcache
->is_readonly()) {
2220 dout(10) << " read-only FS" << dendl
;
2226 for (vector
<MDSCacheObjectInfo
>::iterator p
= mdr
->slave_request
->get_authpins().begin();
2227 p
!= mdr
->slave_request
->get_authpins().end();
2229 MDSCacheObject
*object
= mdcache
->get_object(*p
);
2231 dout(10) << " don't have " << *p
<< dendl
;
2236 objects
.push_back(object
);
2237 if (*p
== mdr
->slave_request
->get_authpin_freeze())
2238 auth_pin_freeze
= static_cast<CInode
*>(object
);
2242 // can we auth pin them?
2244 for (list
<MDSCacheObject
*>::iterator p
= objects
.begin();
2247 if (!(*p
)->is_auth()) {
2248 dout(10) << " not auth for " << **p
<< dendl
;
2252 if (mdr
->is_auth_pinned(*p
))
2254 if (!mdr
->can_auth_pin(*p
)) {
2255 if (mdr
->slave_request
->is_nonblock()) {
2256 dout(10) << " can't auth_pin (freezing?) " << **p
<< " nonblocking" << dendl
;
2262 dout(10) << " waiting for authpinnable on " << **p
<< dendl
;
2263 (*p
)->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
2264 mdr
->drop_local_auth_pins();
2266 mds
->locker
->notify_freeze_waiter(*p
);
2274 mdr
->drop_local_auth_pins(); // just in case
2276 /* freeze authpin wrong inode */
2277 if (mdr
->has_more() && mdr
->more()->is_freeze_authpin
&&
2278 mdr
->more()->rename_inode
!= auth_pin_freeze
)
2279 mdr
->unfreeze_auth_pin(true);
2281 /* handle_slave_rename_prep() call freeze_inode() to wait for all other operations
2282 * on the source inode to complete. This happens after all locks for the rename
2283 * operation are acquired. But to acquire locks, we need auth pin locks' parent
2284 * objects first. So there is an ABBA deadlock if someone auth pins the source inode
2285 * after locks are acquired and before Server::handle_slave_rename_prep() is called.
2286 * The solution is freeze the inode and prevent other MDRequests from getting new
2289 if (auth_pin_freeze
) {
2290 dout(10) << " freezing auth pin on " << *auth_pin_freeze
<< dendl
;
2291 if (!mdr
->freeze_auth_pin(auth_pin_freeze
)) {
2292 auth_pin_freeze
->add_waiter(CInode::WAIT_FROZEN
, new C_MDS_RetryRequest(mdcache
, mdr
));
2293 mds
->mdlog
->flush();
2297 for (list
<MDSCacheObject
*>::iterator p
= objects
.begin();
2300 dout(10) << "auth_pinning " << **p
<< dendl
;
2306 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, MMDSSlaveRequest::OP_AUTHPINACK
);
2308 // return list of my auth_pins (if any)
2309 for (set
<MDSCacheObject
*>::iterator p
= mdr
->auth_pins
.begin();
2310 p
!= mdr
->auth_pins
.end();
2312 MDSCacheObjectInfo info
;
2313 (*p
)->set_object_info(info
);
2314 reply
->get_authpins().push_back(info
);
2315 if (*p
== (MDSCacheObject
*)auth_pin_freeze
)
2316 auth_pin_freeze
->set_object_info(reply
->get_authpin_freeze());
2320 reply
->mark_error_wouldblock();
2322 reply
->mark_error_rofs();
2324 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
2326 // clean up this request
2327 mdr
->slave_request
->put();
2328 mdr
->slave_request
= 0;
2332 /* This function DOES NOT put the passed ack before returning*/
2333 void Server::handle_slave_auth_pin_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*ack
)
2335 dout(10) << "handle_slave_auth_pin_ack on " << *mdr
<< " " << *ack
<< dendl
;
2336 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
2339 set
<MDSCacheObject
*> pinned
;
2340 for (vector
<MDSCacheObjectInfo
>::iterator p
= ack
->get_authpins().begin();
2341 p
!= ack
->get_authpins().end();
2343 MDSCacheObject
*object
= mdcache
->get_object(*p
);
2344 assert(object
); // we pinned it
2345 dout(10) << " remote has pinned " << *object
<< dendl
;
2346 if (!mdr
->is_auth_pinned(object
))
2347 mdr
->remote_auth_pins
[object
] = from
;
2348 if (*p
== ack
->get_authpin_freeze())
2349 mdr
->set_remote_frozen_auth_pin(static_cast<CInode
*>(object
));
2350 pinned
.insert(object
);
2353 // removed frozen auth pin ?
2354 if (mdr
->more()->is_remote_frozen_authpin
&&
2355 ack
->get_authpin_freeze() == MDSCacheObjectInfo()) {
2356 auto p
= mdr
->remote_auth_pins
.find(mdr
->more()->rename_inode
);
2357 assert(p
!= mdr
->remote_auth_pins
.end());
2358 if (p
->second
== from
) {
2359 mdr
->more()->is_remote_frozen_authpin
= false;
2363 // removed auth pins?
2364 map
<MDSCacheObject
*, mds_rank_t
>::iterator p
= mdr
->remote_auth_pins
.begin();
2365 while (p
!= mdr
->remote_auth_pins
.end()) {
2366 MDSCacheObject
* object
= p
->first
;
2367 if (p
->second
== from
&& pinned
.count(object
) == 0) {
2368 dout(10) << " remote has unpinned " << *object
<< dendl
;
2369 mdr
->remote_auth_pins
.erase(p
++);
2375 if (ack
->is_error_rofs()) {
2376 mdr
->more()->slave_error
= -EROFS
;
2377 mdr
->aborted
= true;
2378 } else if (ack
->is_error_wouldblock()) {
2379 mdr
->more()->slave_error
= -EWOULDBLOCK
;
2380 mdr
->aborted
= true;
2384 mdr
->more()->slaves
.insert(from
);
2386 // clear from waiting list
2387 assert(mdr
->more()->waiting_on_slave
.count(from
));
2388 mdr
->more()->waiting_on_slave
.erase(from
);
2391 if (mdr
->more()->waiting_on_slave
.empty())
2392 mdcache
->dispatch_request(mdr
);
2394 dout(10) << "still waiting on slaves " << mdr
->more()->waiting_on_slave
<< dendl
;
2398 // ---------------------------------------
2403 * check whether we are permitted to complete a request
2405 * Check whether we have permission to perform the operation specified
2406 * by mask on the given inode, based on the capability in the mdr's
2409 bool Server::check_access(MDRequestRef
& mdr
, CInode
*in
, unsigned mask
)
2412 int r
= mdr
->session
->check_access(
2414 mdr
->client_request
->get_caller_uid(),
2415 mdr
->client_request
->get_caller_gid(),
2416 &mdr
->client_request
->get_caller_gid_list(),
2417 mdr
->client_request
->head
.args
.setattr
.uid
,
2418 mdr
->client_request
->head
.args
.setattr
.gid
);
2420 respond_to_request(mdr
, r
);
2428 * check whether fragment has reached maximum size
2431 bool Server::check_fragment_space(MDRequestRef
&mdr
, CDir
*in
)
2433 const auto size
= in
->get_frag_size();
2434 if (size
>= g_conf
->mds_bal_fragment_size_max
) {
2435 dout(10) << "fragment " << *in
<< " size exceeds " << g_conf
->mds_bal_fragment_size_max
<< " (ENOSPC)" << dendl
;
2436 respond_to_request(mdr
, -ENOSPC
);
2444 /** validate_dentry_dir
2446 * verify that the dir exists and would own the dname.
2447 * do not check if the dentry exists.
2449 CDir
*Server::validate_dentry_dir(MDRequestRef
& mdr
, CInode
*diri
, const string
& dname
)
2451 // make sure parent is a dir?
2452 if (!diri
->is_dir()) {
2453 dout(7) << "validate_dentry_dir: not a dir" << dendl
;
2454 respond_to_request(mdr
, -ENOTDIR
);
2459 frag_t fg
= diri
->pick_dirfrag(dname
);
2460 CDir
*dir
= try_open_auth_dirfrag(diri
, fg
, mdr
);
2465 if (dir
->is_frozen()) {
2466 dout(7) << "dir is frozen " << *dir
<< dendl
;
2467 dir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
2475 /** prepare_null_dentry
2476 * prepare a null (or existing) dentry in given dir.
2477 * wait for any dn lock.
2479 CDentry
* Server::prepare_null_dentry(MDRequestRef
& mdr
, CDir
*dir
, const string
& dname
, bool okexist
)
2481 dout(10) << "prepare_null_dentry " << dname
<< " in " << *dir
<< dendl
;
2482 assert(dir
->is_auth());
2484 client_t client
= mdr
->get_client();
2486 // does it already exist?
2487 CDentry
*dn
= dir
->lookup(dname
);
2490 if (dn->lock.is_xlocked_by_other(mdr)) {
2491 dout(10) << "waiting on xlocked dentry " << *dn << dendl;
2492 dn->lock.add_waiter(SimpleLock::WAIT_RD, new C_MDS_RetryRequest(mdcache, mdr));
2496 if (!dn
->get_linkage(client
, mdr
)->is_null()) {
2497 // name already exists
2498 dout(10) << "dentry " << dname
<< " exists in " << *dir
<< dendl
;
2500 respond_to_request(mdr
, -EEXIST
);
2504 dn
->first
= dir
->inode
->find_snaprealm()->get_newest_seq() + 1;
2510 // make sure dir is complete
2511 if (!dir
->is_complete() && (!dir
->has_bloom() || dir
->is_in_bloom(dname
))) {
2512 dout(7) << " incomplete dir contents for " << *dir
<< ", fetching" << dendl
;
2513 dir
->fetch(new C_MDS_RetryRequest(mdcache
, mdr
));
2518 dn
= dir
->add_null_dentry(dname
, dir
->inode
->find_snaprealm()->get_newest_seq() + 1);
2520 dout(10) << "prepare_null_dentry added " << *dn
<< dendl
;
2524 CDentry
* Server::prepare_stray_dentry(MDRequestRef
& mdr
, CInode
*in
)
2526 CDentry
*straydn
= mdr
->straydn
;
2529 in
->name_stray_dentry(straydname
);
2530 if (straydn
->get_name() == straydname
)
2533 assert(!mdr
->done_locking
);
2534 mdr
->unpin(straydn
);
2537 CDir
*straydir
= mdcache
->get_stray_dir(in
);
2539 if (!mdr
->client_request
->is_replay() &&
2540 !check_fragment_space(mdr
, straydir
))
2543 straydn
= mdcache
->get_or_create_stray_dentry(in
);
2544 mdr
->straydn
= straydn
;
2549 /** prepare_new_inode
2551 * create a new inode. set c/m/atime. hit dir pop.
2553 CInode
* Server::prepare_new_inode(MDRequestRef
& mdr
, CDir
*dir
, inodeno_t useino
, unsigned mode
,
2554 file_layout_t
*layout
)
2556 CInode
*in
= new CInode(mdcache
);
2558 // Server::prepare_force_open_sessions() can re-open session in closing
2559 // state. In that corner case, session's prealloc_inos are being freed.
2560 // To simplify the code, we disallow using/refilling session's prealloc_ino
2561 // while session is opening.
2562 bool allow_prealloc_inos
= !mdr
->session
->is_opening();
2565 if (allow_prealloc_inos
&&
2566 mdr
->session
->info
.prealloc_inos
.size()) {
2567 mdr
->used_prealloc_ino
=
2568 in
->inode
.ino
= mdr
->session
->take_ino(useino
); // prealloc -> used
2569 mds
->sessionmap
.mark_projected(mdr
->session
);
2571 dout(10) << "prepare_new_inode used_prealloc " << mdr
->used_prealloc_ino
2572 << " (" << mdr
->session
->info
.prealloc_inos
2573 << ", " << mdr
->session
->info
.prealloc_inos
.size() << " left)"
2577 in
->inode
.ino
= mds
->inotable
->project_alloc_id();
2578 dout(10) << "prepare_new_inode alloc " << mdr
->alloc_ino
<< dendl
;
2581 if (useino
&& useino
!= in
->inode
.ino
) {
2582 dout(0) << "WARNING: client specified " << useino
<< " and i allocated " << in
->inode
.ino
<< dendl
;
2583 mds
->clog
->error() << mdr
->client_request
->get_source()
2584 << " specified ino " << useino
2585 << " but mds." << mds
->get_nodeid() << " allocated " << in
->inode
.ino
;
2586 //ceph_abort(); // just for now.
2589 if (allow_prealloc_inos
&&
2590 mdr
->session
->get_num_projected_prealloc_inos() < g_conf
->mds_client_prealloc_inos
/ 2) {
2591 int need
= g_conf
->mds_client_prealloc_inos
- mdr
->session
->get_num_projected_prealloc_inos();
2592 mds
->inotable
->project_alloc_ids(mdr
->prealloc_inos
, need
);
2593 assert(mdr
->prealloc_inos
.size()); // or else fix projected increment semantics
2594 mdr
->session
->pending_prealloc_inos
.insert(mdr
->prealloc_inos
);
2595 mds
->sessionmap
.mark_projected(mdr
->session
);
2596 dout(10) << "prepare_new_inode prealloc " << mdr
->prealloc_inos
<< dendl
;
2599 in
->inode
.version
= 1;
2600 in
->inode
.xattr_version
= 1;
2601 in
->inode
.nlink
= 1; // FIXME
2603 in
->inode
.mode
= mode
;
2605 memset(&in
->inode
.dir_layout
, 0, sizeof(in
->inode
.dir_layout
));
2606 if (in
->inode
.is_dir()) {
2607 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
2608 } else if (layout
) {
2609 in
->inode
.layout
= *layout
;
2611 in
->inode
.layout
= mdcache
->default_file_layout
;
2614 in
->inode
.truncate_size
= -1ull; // not truncated, yet!
2615 in
->inode
.truncate_seq
= 1; /* starting with 1, 0 is kept for no-truncation logic */
2617 CInode
*diri
= dir
->get_inode();
2619 dout(10) << oct
<< " dir mode 0" << diri
->inode
.mode
<< " new mode 0" << mode
<< dec
<< dendl
;
2621 if (diri
->inode
.mode
& S_ISGID
) {
2622 dout(10) << " dir is sticky" << dendl
;
2623 in
->inode
.gid
= diri
->inode
.gid
;
2624 if (S_ISDIR(mode
)) {
2625 dout(10) << " new dir also sticky" << dendl
;
2626 in
->inode
.mode
|= S_ISGID
;
2629 in
->inode
.gid
= mdr
->client_request
->get_caller_gid();
2631 in
->inode
.uid
= mdr
->client_request
->get_caller_uid();
2633 in
->inode
.btime
= in
->inode
.ctime
= in
->inode
.mtime
= in
->inode
.atime
=
2634 mdr
->get_op_stamp();
2636 in
->inode
.change_attr
= 0;
2638 MClientRequest
*req
= mdr
->client_request
;
2639 if (req
->get_data().length()) {
2640 bufferlist::iterator p
= req
->get_data().begin();
2642 // xattrs on new inode?
2643 map
<string
,bufferptr
> xattrs
;
2644 ::decode(xattrs
, p
);
2645 for (map
<string
,bufferptr
>::iterator p
= xattrs
.begin(); p
!= xattrs
.end(); ++p
) {
2646 dout(10) << "prepare_new_inode setting xattr " << p
->first
<< dendl
;
2647 in
->xattrs
[p
->first
] = p
->second
;
2651 if (!mds
->mdsmap
->get_inline_data_enabled() ||
2652 !mdr
->session
->connection
->has_feature(CEPH_FEATURE_MDS_INLINE_DATA
))
2653 in
->inode
.inline_data
.version
= CEPH_INLINE_NONE
;
2655 mdcache
->add_inode(in
); // add
2656 dout(10) << "prepare_new_inode " << *in
<< dendl
;
2660 void Server::journal_allocated_inos(MDRequestRef
& mdr
, EMetaBlob
*blob
)
2662 dout(20) << "journal_allocated_inos sessionmapv " << mds
->sessionmap
.get_projected()
2663 << " inotablev " << mds
->inotable
->get_projected_version()
2665 blob
->set_ino_alloc(mdr
->alloc_ino
,
2666 mdr
->used_prealloc_ino
,
2668 mdr
->client_request
->get_source(),
2669 mds
->sessionmap
.get_projected(),
2670 mds
->inotable
->get_projected_version());
2673 void Server::apply_allocated_inos(MDRequestRef
& mdr
, Session
*session
)
2675 dout(10) << "apply_allocated_inos " << mdr
->alloc_ino
2676 << " / " << mdr
->prealloc_inos
2677 << " / " << mdr
->used_prealloc_ino
<< dendl
;
2679 if (mdr
->alloc_ino
) {
2680 mds
->inotable
->apply_alloc_id(mdr
->alloc_ino
);
2682 if (mdr
->prealloc_inos
.size()) {
2684 session
->pending_prealloc_inos
.subtract(mdr
->prealloc_inos
);
2685 session
->info
.prealloc_inos
.insert(mdr
->prealloc_inos
);
2686 mds
->sessionmap
.mark_dirty(session
);
2687 mds
->inotable
->apply_alloc_ids(mdr
->prealloc_inos
);
2689 if (mdr
->used_prealloc_ino
) {
2691 session
->info
.used_inos
.erase(mdr
->used_prealloc_ino
);
2692 mds
->sessionmap
.mark_dirty(session
);
2696 class C_MDS_TryFindInode
: public ServerContext
{
2699 C_MDS_TryFindInode(Server
*s
, MDRequestRef
& r
) : ServerContext(s
), mdr(r
) {}
2700 void finish(int r
) override
{
2701 if (r
== -ESTALE
) // :( find_ino_peers failed
2702 server
->respond_to_request(mdr
, r
);
2704 server
->dispatch_client_request(mdr
);
2708 CDir
*Server::traverse_to_auth_dir(MDRequestRef
& mdr
, vector
<CDentry
*> &trace
, filepath refpath
)
2710 // figure parent dir vs dname
2711 if (refpath
.depth() == 0) {
2712 dout(7) << "can't do that to root" << dendl
;
2713 respond_to_request(mdr
, -EINVAL
);
2716 string dname
= refpath
.last_dentry();
2717 refpath
.pop_dentry();
2719 dout(10) << "traverse_to_auth_dir dirpath " << refpath
<< " dname " << dname
<< dendl
;
2721 // traverse to parent dir
2723 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, refpath
, &trace
, &diri
, MDS_TRAVERSE_FORWARD
);
2724 if (r
> 0) return 0; // delayed
2727 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
2728 mdcache
->find_ino_peers(refpath
.get_ino(), new C_MDS_TryFindInode(this, mdr
));
2731 respond_to_request(mdr
, r
);
2735 // is it an auth dir?
2736 CDir
*dir
= validate_dentry_dir(mdr
, diri
, dname
);
2738 return 0; // forwarded or waiting for freeze
2740 dout(10) << "traverse_to_auth_dir " << *dir
<< dendl
;
2744 /* If this returns null, the request has been handled
2745 * as appropriate: forwarded on, or the client's been replied to */
2746 CInode
* Server::rdlock_path_pin_ref(MDRequestRef
& mdr
, int n
,
2747 set
<SimpleLock
*> &rdlocks
,
2749 bool no_want_auth
, /* for readdir, who doesn't want auth _even_if_ it's
2751 file_layout_t
**layout
,
2752 bool no_lookup
) // true if we cannot return a null dentry lease
2754 const filepath
& refpath
= n
? mdr
->get_filepath2() : mdr
->get_filepath();
2755 dout(10) << "rdlock_path_pin_ref " << *mdr
<< " " << refpath
<< dendl
;
2757 if (mdr
->done_locking
)
2761 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, refpath
, &mdr
->dn
[n
], &mdr
->in
[n
], MDS_TRAVERSE_FORWARD
);
2763 return NULL
; // delayed
2764 if (r
< 0) { // error
2765 if (r
== -ENOENT
&& n
== 0 && mdr
->dn
[n
].size()) {
2767 mdr
->tracedn
= mdr
->dn
[n
][mdr
->dn
[n
].size()-1];
2768 respond_to_request(mdr
, r
);
2769 } else if (r
== -ESTALE
) {
2770 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
2771 MDSInternalContextBase
*c
= new C_MDS_TryFindInode(this, mdr
);
2772 mdcache
->find_ino_peers(refpath
.get_ino(), c
);
2774 dout(10) << "FAIL on error " << r
<< dendl
;
2775 respond_to_request(mdr
, r
);
2779 CInode
*ref
= mdr
->in
[n
];
2780 dout(10) << "ref is " << *ref
<< dendl
;
2782 // fw to inode auth?
2783 if (mdr
->snapid
!= CEPH_NOSNAP
&& !no_want_auth
)
2787 if (ref
->is_ambiguous_auth()) {
2788 dout(10) << "waiting for single auth on " << *ref
<< dendl
;
2789 ref
->add_waiter(CInode::WAIT_SINGLEAUTH
, new C_MDS_RetryRequest(mdcache
, mdr
));
2792 if (!ref
->is_auth()) {
2793 dout(10) << "fw to auth for " << *ref
<< dendl
;
2794 mdcache
->request_forward(mdr
, ref
->authority().first
);
2799 // do NOT proceed if freezing, as cap release may defer in that case, and
2800 // we could deadlock when we try to lock @ref.
2801 // if we're already auth_pinned, continue; the release has already been processed.
2802 if (ref
->is_frozen() || ref
->is_frozen_auth_pin() ||
2803 (ref
->is_freezing() && !mdr
->is_auth_pinned(ref
))) {
2804 dout(7) << "waiting for !frozen/authpinnable on " << *ref
<< dendl
;
2805 ref
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
2806 /* If we have any auth pins, this will deadlock.
2807 * But the only way to get here if we've already got auth pins
2808 * is because we're on an inode with snapshots that got updated
2809 * between dispatches of this request. So we're going to drop
2810 * our locks and our auth pins and reacquire them later.
2812 * This is safe since we're only in this function when working on
2813 * a single MDS request; otherwise we'd be in
2814 * rdlock_path_xlock_dentry.
2816 mds
->locker
->drop_locks(mdr
.get(), NULL
);
2817 mdr
->drop_local_auth_pins();
2818 if (!mdr
->remote_auth_pins
.empty())
2819 mds
->locker
->notify_freeze_waiter(ref
);
2826 for (int i
=0; i
<(int)mdr
->dn
[n
].size(); i
++)
2827 rdlocks
.insert(&mdr
->dn
[n
][i
]->lock
);
2829 mds
->locker
->include_snap_rdlocks_wlayout(rdlocks
, ref
, layout
);
2831 mds
->locker
->include_snap_rdlocks(rdlocks
, ref
);
2839 /** rdlock_path_xlock_dentry
2840 * traverse path to the directory that could/would contain dentry.
2841 * make sure i am auth for that dentry, forward as necessary.
2842 * create null dentry in place (or use existing if okexist).
2843 * get rdlocks on traversed dentries, xlock on new dentry.
2845 CDentry
* Server::rdlock_path_xlock_dentry(MDRequestRef
& mdr
, int n
,
2846 set
<SimpleLock
*>& rdlocks
, set
<SimpleLock
*>& wrlocks
, set
<SimpleLock
*>& xlocks
,
2847 bool okexist
, bool mustexist
, bool alwaysxlock
,
2848 file_layout_t
**layout
)
2850 const filepath
& refpath
= n
? mdr
->get_filepath2() : mdr
->get_filepath();
2852 dout(10) << "rdlock_path_xlock_dentry " << *mdr
<< " " << refpath
<< dendl
;
2854 client_t client
= mdr
->get_client();
2856 if (mdr
->done_locking
)
2857 return mdr
->dn
[n
].back();
2859 CDir
*dir
= traverse_to_auth_dir(mdr
, mdr
->dn
[n
], refpath
);
2862 CInode
*diri
= dir
->get_inode();
2863 if (!mdr
->reqid
.name
.is_mds()) {
2864 if (diri
->is_system() && !diri
->is_root()) {
2865 respond_to_request(mdr
, -EROFS
);
2869 if (!diri
->is_base() && diri
->get_projected_parent_dir()->inode
->is_stray()) {
2870 respond_to_request(mdr
, -ENOENT
);
2874 // make a null dentry?
2875 const string
&dname
= refpath
.last_dentry();
2878 dn
= dir
->lookup(dname
);
2880 // make sure dir is complete
2881 if (!dn
&& !dir
->is_complete() &&
2882 (!dir
->has_bloom() || dir
->is_in_bloom(dname
))) {
2883 dout(7) << " incomplete dir contents for " << *dir
<< ", fetching" << dendl
;
2884 dir
->fetch(new C_MDS_RetryRequest(mdcache
, mdr
));
2889 if (dn
&& !dn
->lock
.can_read(client
) && dn
->lock
.get_xlock_by() != mdr
) {
2890 dout(10) << "waiting on xlocked dentry " << *dn
<< dendl
;
2891 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDS_RetryRequest(mdcache
, mdr
));
2896 if (!dn
|| dn
->get_linkage(client
, mdr
)->is_null()) {
2897 dout(7) << "dentry " << dname
<< " dne in " << *dir
<< dendl
;
2898 respond_to_request(mdr
, -ENOENT
);
2902 dn
= prepare_null_dentry(mdr
, dir
, dname
, okexist
);
2907 mdr
->dn
[n
].push_back(dn
);
2908 CDentry::linkage_t
*dnl
= dn
->get_linkage(client
, mdr
);
2909 mdr
->in
[n
] = dnl
->get_inode();
2912 // NOTE: rename takes the same set of locks for srcdn
2913 for (int i
=0; i
<(int)mdr
->dn
[n
].size(); i
++)
2914 rdlocks
.insert(&mdr
->dn
[n
][i
]->lock
);
2915 if (alwaysxlock
|| dnl
->is_null())
2916 xlocks
.insert(&dn
->lock
); // new dn, xlock
2918 rdlocks
.insert(&dn
->lock
); // existing dn, rdlock
2919 wrlocks
.insert(&dn
->get_dir()->inode
->filelock
); // also, wrlock on dir mtime
2920 wrlocks
.insert(&dn
->get_dir()->inode
->nestlock
); // also, wrlock on dir mtime
2922 mds
->locker
->include_snap_rdlocks_wlayout(rdlocks
, dn
->get_dir()->inode
, layout
);
2924 mds
->locker
->include_snap_rdlocks(rdlocks
, dn
->get_dir()->inode
);
2934 * try_open_auth_dirfrag -- open dirfrag, or forward to dirfrag auth
2936 * @param diri base inode
2937 * @param fg the exact frag we want
2938 * @param mdr request
2939 * @returns the pointer, or NULL if it had to be delayed (but mdr is taken care of)
2941 CDir
* Server::try_open_auth_dirfrag(CInode
*diri
, frag_t fg
, MDRequestRef
& mdr
)
2943 CDir
*dir
= diri
->get_dirfrag(fg
);
2945 // not open and inode not mine?
2946 if (!dir
&& !diri
->is_auth()) {
2947 mds_rank_t inauth
= diri
->authority().first
;
2948 dout(7) << "try_open_auth_dirfrag: not open, not inode auth, fw to mds." << inauth
<< dendl
;
2949 mdcache
->request_forward(mdr
, inauth
);
2953 // not open and inode frozen?
2954 if (!dir
&& diri
->is_frozen()) {
2955 dout(10) << "try_open_auth_dirfrag: dir inode is frozen, waiting " << *diri
<< dendl
;
2956 assert(diri
->get_parent_dir());
2957 diri
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
2963 dir
= diri
->get_or_open_dirfrag(mdcache
, fg
);
2965 // am i auth for the dirfrag?
2966 if (!dir
->is_auth()) {
2967 mds_rank_t auth
= dir
->authority().first
;
2968 dout(7) << "try_open_auth_dirfrag: not auth for " << *dir
2969 << ", fw to mds." << auth
<< dendl
;
2970 mdcache
->request_forward(mdr
, auth
);
2978 // ===============================================================================
2981 void Server::handle_client_getattr(MDRequestRef
& mdr
, bool is_lookup
)
2983 MClientRequest
*req
= mdr
->client_request
;
2984 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
2986 if (req
->get_filepath().depth() == 0 && is_lookup
) {
2987 // refpath can't be empty for lookup but it can for
2988 // getattr (we do getattr with empty refpath for mount of '/')
2989 respond_to_request(mdr
, -EINVAL
);
2993 CInode
*ref
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, false, false, NULL
, !is_lookup
);
2997 * if client currently holds the EXCL cap on a field, do not rdlock
2998 * it; client's stat() will result in valid info if _either_ EXCL
2999 * cap is held or MDS rdlocks and reads the value here.
3001 * handling this case here is easier than weakening rdlock
3002 * semantics... that would cause problems elsewhere.
3004 client_t client
= mdr
->get_client();
3006 Capability
*cap
= ref
->get_client_cap(client
);
3007 if (cap
&& (mdr
->snapid
== CEPH_NOSNAP
||
3008 mdr
->snapid
<= cap
->client_follows
))
3009 issued
= cap
->issued();
3011 int mask
= req
->head
.args
.getattr
.mask
;
3012 if ((mask
& CEPH_CAP_LINK_SHARED
) && (issued
& CEPH_CAP_LINK_EXCL
) == 0) rdlocks
.insert(&ref
->linklock
);
3013 if ((mask
& CEPH_CAP_AUTH_SHARED
) && (issued
& CEPH_CAP_AUTH_EXCL
) == 0) rdlocks
.insert(&ref
->authlock
);
3014 if ((mask
& CEPH_CAP_FILE_SHARED
) && (issued
& CEPH_CAP_FILE_EXCL
) == 0) rdlocks
.insert(&ref
->filelock
);
3015 if ((mask
& CEPH_CAP_XATTR_SHARED
) && (issued
& CEPH_CAP_XATTR_EXCL
) == 0) rdlocks
.insert(&ref
->xattrlock
);
3017 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3020 if (!check_access(mdr
, ref
, MAY_READ
))
3023 // note which caps are requested, so we return at least a snapshot
3024 // value for them. (currently this matters for xattrs and inline data)
3025 mdr
->getattr_caps
= mask
;
3027 mds
->balancer
->hit_inode(ceph_clock_now(), ref
, META_POP_IRD
,
3028 req
->get_source().num());
3031 dout(10) << "reply to stat on " << *req
<< dendl
;
3034 mdr
->tracedn
= mdr
->dn
[0].back();
3035 respond_to_request(mdr
, 0);
3038 struct C_MDS_LookupIno2
: public ServerContext
{
3040 C_MDS_LookupIno2(Server
*s
, MDRequestRef
& r
) : ServerContext(s
), mdr(r
) {}
3041 void finish(int r
) override
{
3042 server
->_lookup_ino_2(mdr
, r
);
3046 /* This function DOES clean up the mdr before returning*/
3050 void Server::handle_client_lookup_ino(MDRequestRef
& mdr
,
3051 bool want_parent
, bool want_dentry
)
3053 MClientRequest
*req
= mdr
->client_request
;
3055 inodeno_t ino
= req
->get_filepath().get_ino();
3056 CInode
*in
= mdcache
->get_inode(ino
);
3057 if (in
&& in
->state_test(CInode::STATE_PURGING
)) {
3058 respond_to_request(mdr
, -ESTALE
);
3062 mdcache
->open_ino(ino
, (int64_t)-1, new C_MDS_LookupIno2(this, mdr
), false);
3066 if (mdr
&& in
->snaprealm
&& !in
->snaprealm
->is_open() &&
3067 !in
->snaprealm
->open_parents(new C_MDS_RetryRequest(mdcache
, mdr
))) {
3071 // check for nothing (not read or write); this still applies the
3073 if (!check_access(mdr
, in
, 0))
3076 CDentry
*dn
= in
->get_projected_parent_dn();
3077 CInode
*diri
= dn
? dn
->get_dir()->inode
: NULL
;
3079 set
<SimpleLock
*> rdlocks
;
3080 if (dn
&& (want_parent
|| want_dentry
)) {
3082 rdlocks
.insert(&dn
->lock
);
3085 unsigned mask
= req
->head
.args
.getattr
.mask
;
3087 Capability
*cap
= in
->get_client_cap(mdr
->get_client());
3089 if (cap
&& (mdr
->snapid
== CEPH_NOSNAP
|| mdr
->snapid
<= cap
->client_follows
))
3090 issued
= cap
->issued();
3091 // permission bits, ACL/security xattrs
3092 if ((mask
& CEPH_CAP_AUTH_SHARED
) && (issued
& CEPH_CAP_AUTH_EXCL
) == 0)
3093 rdlocks
.insert(&in
->authlock
);
3094 if ((mask
& CEPH_CAP_XATTR_SHARED
) && (issued
& CEPH_CAP_XATTR_EXCL
) == 0)
3095 rdlocks
.insert(&in
->xattrlock
);
3097 mdr
->getattr_caps
= mask
;
3100 if (!rdlocks
.empty()) {
3101 set
<SimpleLock
*> wrlocks
, xlocks
;
3102 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3106 // need read access to directory inode
3107 if (!check_access(mdr
, diri
, MAY_READ
))
3113 if (in
->is_base()) {
3114 respond_to_request(mdr
, -EINVAL
);
3117 if (!diri
|| diri
->is_stray()) {
3118 respond_to_request(mdr
, -ESTALE
);
3121 dout(10) << "reply to lookup_parent " << *in
<< dendl
;
3123 respond_to_request(mdr
, 0);
3126 inodeno_t dirino
= req
->get_filepath2().get_ino();
3127 if (!diri
|| (dirino
!= inodeno_t() && diri
->ino() != dirino
)) {
3128 respond_to_request(mdr
, -ENOENT
);
3131 dout(10) << "reply to lookup_name " << *in
<< dendl
;
3133 dout(10) << "reply to lookup_ino " << *in
<< dendl
;
3138 respond_to_request(mdr
, 0);
3142 void Server::_lookup_ino_2(MDRequestRef
& mdr
, int r
)
3144 inodeno_t ino
= mdr
->client_request
->get_filepath().get_ino();
3145 dout(10) << "_lookup_ino_2 " << mdr
.get() << " ino " << ino
<< " r=" << r
<< dendl
;
3147 // `r` is a rank if >=0, else an error code
3149 mds_rank_t
dest_rank(r
);
3150 if (dest_rank
== mds
->get_nodeid())
3151 dispatch_client_request(mdr
);
3153 mdcache
->request_forward(mdr
, dest_rank
);
3158 if (r
== -ENOENT
|| r
== -ENODATA
)
3160 respond_to_request(mdr
, r
);
3164 /* This function takes responsibility for the passed mdr*/
3165 void Server::handle_client_open(MDRequestRef
& mdr
)
3167 MClientRequest
*req
= mdr
->client_request
;
3168 dout(7) << "open on " << req
->get_filepath() << dendl
;
3170 int flags
= req
->head
.args
.open
.flags
;
3171 int cmode
= ceph_flags_to_mode(flags
);
3173 respond_to_request(mdr
, -EINVAL
);
3177 bool need_auth
= !file_mode_is_readonly(cmode
) ||
3178 (flags
& (CEPH_O_TRUNC
| CEPH_O_DIRECTORY
));
3180 if ((cmode
& CEPH_FILE_MODE_WR
) && mdcache
->is_readonly()) {
3181 dout(7) << "read-only FS" << dendl
;
3182 respond_to_request(mdr
, -EROFS
);
3186 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3187 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, need_auth
);
3191 if (cur
->is_frozen() || cur
->state_test(CInode::STATE_EXPORTINGCAPS
)) {
3193 mdr
->done_locking
= false;
3194 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
3199 if (!cur
->inode
.is_file()) {
3200 // can only open non-regular inode with mode FILE_MODE_PIN, at least for now.
3201 cmode
= CEPH_FILE_MODE_PIN
;
3202 // the inode is symlink and client wants to follow it, ignore the O_TRUNC flag.
3203 if (cur
->inode
.is_symlink() && !(flags
& CEPH_O_NOFOLLOW
))
3204 flags
&= ~CEPH_O_TRUNC
;
3207 dout(10) << "open flags = " << flags
3208 << ", filemode = " << cmode
3209 << ", need_auth = " << need_auth
3213 /*if (!cur->inode.is_file() && !cur->inode.is_dir()) {
3214 dout(7) << "not a file or dir " << *cur << dendl;
3215 respond_to_request(mdr, -ENXIO); // FIXME what error do we want?
3218 if ((flags
& CEPH_O_DIRECTORY
) && !cur
->inode
.is_dir() && !cur
->inode
.is_symlink()) {
3219 dout(7) << "specified O_DIRECTORY on non-directory " << *cur
<< dendl
;
3220 respond_to_request(mdr
, -EINVAL
);
3224 if ((flags
& CEPH_O_TRUNC
) && !cur
->inode
.is_file()) {
3225 dout(7) << "specified O_TRUNC on !(file|symlink) " << *cur
<< dendl
;
3226 // we should return -EISDIR for directory, return -EINVAL for other non-regular
3227 respond_to_request(mdr
, cur
->inode
.is_dir() ? -EISDIR
: -EINVAL
);
3231 if (cur
->inode
.inline_data
.version
!= CEPH_INLINE_NONE
&&
3232 !mdr
->session
->connection
->has_feature(CEPH_FEATURE_MDS_INLINE_DATA
)) {
3233 dout(7) << "old client cannot open inline data file " << *cur
<< dendl
;
3234 respond_to_request(mdr
, -EPERM
);
3238 // snapped data is read only
3239 if (mdr
->snapid
!= CEPH_NOSNAP
&&
3240 ((cmode
& CEPH_FILE_MODE_WR
) || req
->may_write())) {
3241 dout(7) << "snap " << mdr
->snapid
<< " is read-only " << *cur
<< dendl
;
3242 respond_to_request(mdr
, -EROFS
);
3246 unsigned mask
= req
->head
.args
.open
.mask
;
3248 Capability
*cap
= cur
->get_client_cap(mdr
->get_client());
3250 if (cap
&& (mdr
->snapid
== CEPH_NOSNAP
|| mdr
->snapid
<= cap
->client_follows
))
3251 issued
= cap
->issued();
3252 // permission bits, ACL/security xattrs
3253 if ((mask
& CEPH_CAP_AUTH_SHARED
) && (issued
& CEPH_CAP_AUTH_EXCL
) == 0)
3254 rdlocks
.insert(&cur
->authlock
);
3255 if ((mask
& CEPH_CAP_XATTR_SHARED
) && (issued
& CEPH_CAP_XATTR_EXCL
) == 0)
3256 rdlocks
.insert(&cur
->xattrlock
);
3258 mdr
->getattr_caps
= mask
;
3262 if ((flags
& CEPH_O_TRUNC
) && !mdr
->has_completed
) {
3263 assert(cur
->is_auth());
3265 xlocks
.insert(&cur
->filelock
);
3266 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3269 if (!check_access(mdr
, cur
, MAY_WRITE
))
3272 // wait for pending truncate?
3273 const inode_t
*pi
= cur
->get_projected_inode();
3274 if (pi
->is_truncating()) {
3275 dout(10) << " waiting for pending truncate from " << pi
->truncate_from
3276 << " to " << pi
->truncate_size
<< " to complete on " << *cur
<< dendl
;
3277 mds
->locker
->drop_locks(mdr
.get());
3278 mdr
->drop_local_auth_pins();
3279 cur
->add_waiter(CInode::WAIT_TRUNC
, new C_MDS_RetryRequest(mdcache
, mdr
));
3283 do_open_truncate(mdr
, cmode
);
3287 // sync filelock if snapped.
3288 // this makes us wait for writers to flushsnaps, ensuring we get accurate metadata,
3289 // and that data itself is flushed so that we can read the snapped data off disk.
3290 if (mdr
->snapid
!= CEPH_NOSNAP
&& !cur
->is_dir()) {
3291 rdlocks
.insert(&cur
->filelock
);
3294 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3298 if (cmode
& CEPH_FILE_MODE_WR
)
3300 if (!check_access(mdr
, cur
, mask
))
3303 if (cur
->is_file() || cur
->is_dir()) {
3304 if (mdr
->snapid
== CEPH_NOSNAP
) {
3306 Capability
*cap
= mds
->locker
->issue_new_caps(cur
, cmode
, mdr
->session
, 0, req
->is_replay());
3308 dout(12) << "open issued caps " << ccap_string(cap
->pending())
3309 << " for " << req
->get_source()
3310 << " on " << *cur
<< dendl
;
3312 int caps
= ceph_caps_for_mode(cmode
);
3313 dout(12) << "open issued IMMUTABLE SNAP caps " << ccap_string(caps
)
3314 << " for " << req
->get_source()
3315 << " snapid " << mdr
->snapid
3316 << " on " << *cur
<< dendl
;
3317 mdr
->snap_caps
= caps
;
3321 // increase max_size?
3322 if (cmode
& CEPH_FILE_MODE_WR
)
3323 mds
->locker
->check_inode_max_size(cur
);
3325 // make sure this inode gets into the journal
3326 if (cur
->is_auth() && cur
->last
== CEPH_NOSNAP
&&
3327 !cur
->item_open_file
.is_on_list()) {
3328 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
3329 EOpen
*le
= new EOpen(mds
->mdlog
);
3330 mdlog
->start_entry(le
);
3331 le
->add_clean_inode(cur
);
3332 ls
->open_files
.push_back(&cur
->item_open_file
);
3333 mdlog
->submit_entry(le
);
3337 if (cmode
& CEPH_FILE_MODE_WR
)
3338 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), cur
, META_POP_IWR
);
3340 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), cur
, META_POP_IRD
,
3341 mdr
->client_request
->get_source().num());
3344 if (req
->get_dentry_wanted()) {
3345 assert(mdr
->dn
[0].size());
3346 dn
= mdr
->dn
[0].back();
3351 respond_to_request(mdr
, 0);
3354 class C_MDS_openc_finish
: public ServerLogContext
{
3359 C_MDS_openc_finish(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CInode
*ni
, snapid_t f
) :
3360 ServerLogContext(s
, r
), dn(d
), newi(ni
), follows(f
) {}
3361 void finish(int r
) override
{
3364 dn
->pop_projected_linkage();
3366 // dirty inode, dn, dir
3367 newi
->inode
.version
--; // a bit hacky, see C_MDS_mknod_finish
3368 newi
->mark_dirty(newi
->inode
.version
+1, mdr
->ls
);
3369 newi
->_mark_dirty_parent(mdr
->ls
, true);
3373 get_mds()->locker
->share_inode_max_size(newi
);
3375 MDRequestRef null_ref
;
3376 get_mds()->mdcache
->send_dentry_link(dn
, null_ref
);
3378 get_mds()->balancer
->hit_inode(mdr
->get_mds_stamp(), newi
, META_POP_IWR
);
3380 server
->respond_to_request(mdr
, 0);
3382 assert(g_conf
->mds_kill_openc_at
!= 1);
3386 /* This function takes responsibility for the passed mdr*/
3387 void Server::handle_client_openc(MDRequestRef
& mdr
)
3389 MClientRequest
*req
= mdr
->client_request
;
3390 client_t client
= mdr
->get_client();
3392 dout(7) << "open w/ O_CREAT on " << req
->get_filepath() << dendl
;
3394 int cmode
= ceph_flags_to_mode(req
->head
.args
.open
.flags
);
3396 respond_to_request(mdr
, -EINVAL
);
3400 bool excl
= req
->head
.args
.open
.flags
& CEPH_O_EXCL
;
3403 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, req
->get_filepath(),
3404 &mdr
->dn
[0], NULL
, MDS_TRAVERSE_FORWARD
);
3408 handle_client_open(mdr
);
3411 if (r
< 0 && r
!= -ENOENT
) {
3413 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
3414 MDSInternalContextBase
*c
= new C_MDS_TryFindInode(this, mdr
);
3415 mdcache
->find_ino_peers(req
->get_filepath().get_ino(), c
);
3417 dout(10) << "FAIL on error " << r
<< dendl
;
3418 respond_to_request(mdr
, r
);
3424 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3425 file_layout_t
*dir_layout
= NULL
;
3426 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
,
3427 !excl
, false, false, &dir_layout
);
3429 if (mdr
->snapid
!= CEPH_NOSNAP
) {
3430 respond_to_request(mdr
, -EROFS
);
3434 file_layout_t layout
;
3436 layout
= *dir_layout
;
3438 layout
= mdcache
->default_file_layout
;
3440 // What kind of client caps are required to complete this operation
3441 uint64_t access
= MAY_WRITE
;
3443 const auto default_layout
= layout
;
3445 // fill in any special params from client
3446 if (req
->head
.args
.open
.stripe_unit
)
3447 layout
.stripe_unit
= req
->head
.args
.open
.stripe_unit
;
3448 if (req
->head
.args
.open
.stripe_count
)
3449 layout
.stripe_count
= req
->head
.args
.open
.stripe_count
;
3450 if (req
->head
.args
.open
.object_size
)
3451 layout
.object_size
= req
->head
.args
.open
.object_size
;
3452 if (req
->get_connection()->has_feature(CEPH_FEATURE_CREATEPOOLID
) &&
3453 (__s32
)req
->head
.args
.open
.pool
>= 0) {
3454 layout
.pool_id
= req
->head
.args
.open
.pool
;
3456 // make sure we have as new a map as the client
3457 if (req
->get_mdsmap_epoch() > mds
->mdsmap
->get_epoch()) {
3458 mds
->wait_for_mdsmap(req
->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache
, mdr
));
3463 // If client doesn't have capability to modify layout pools, then
3464 // only permit this request if the requested pool matches what the
3465 // file would have inherited anyway from its parent.
3466 if (default_layout
!= layout
) {
3467 access
|= MAY_SET_VXATTR
;
3470 if (!layout
.is_valid()) {
3471 dout(10) << " invalid initial file layout" << dendl
;
3472 respond_to_request(mdr
, -EINVAL
);
3475 if (!mds
->mdsmap
->is_data_pool(layout
.pool_id
)) {
3476 dout(10) << " invalid data pool " << layout
.pool_id
<< dendl
;
3477 respond_to_request(mdr
, -EINVAL
);
3482 CDir
*dir
= dn
->get_dir();
3483 CInode
*diri
= dir
->get_inode();
3484 rdlocks
.insert(&diri
->authlock
);
3485 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3488 if (!check_access(mdr
, diri
, access
))
3491 if (!check_fragment_space(mdr
, dir
))
3494 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
3496 if (!dnl
->is_null()) {
3498 assert(req
->head
.args
.open
.flags
& CEPH_O_EXCL
);
3499 dout(10) << "O_EXCL, target exists, failing with -EEXIST" << dendl
;
3500 mdr
->tracei
= dnl
->get_inode();
3502 respond_to_request(mdr
, -EEXIST
);
3507 SnapRealm
*realm
= diri
->find_snaprealm(); // use directory's realm; inode isn't attached yet.
3508 snapid_t follows
= realm
->get_newest_seq();
3510 CInode
*in
= prepare_new_inode(mdr
, dn
->get_dir(), inodeno_t(req
->head
.ino
),
3511 req
->head
.args
.open
.mode
| S_IFREG
, &layout
);
3515 dn
->push_projected_linkage(in
);
3517 in
->inode
.version
= dn
->pre_dirty();
3518 if (layout
.pool_id
!= mdcache
->default_file_layout
.pool_id
)
3519 in
->inode
.add_old_pool(mdcache
->default_file_layout
.pool_id
);
3520 in
->inode
.update_backtrace();
3521 if (cmode
& CEPH_FILE_MODE_WR
) {
3522 in
->inode
.client_ranges
[client
].range
.first
= 0;
3523 in
->inode
.client_ranges
[client
].range
.last
= in
->inode
.get_layout_size_increment();
3524 in
->inode
.client_ranges
[client
].follows
= follows
;
3526 in
->inode
.rstat
.rfiles
= 1;
3528 assert(dn
->first
== follows
+1);
3529 in
->first
= dn
->first
;
3532 mdr
->ls
= mdlog
->get_current_segment();
3533 EUpdate
*le
= new EUpdate(mdlog
, "openc");
3534 mdlog
->start_entry(le
);
3535 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
3536 journal_allocated_inos(mdr
, &le
->metablob
);
3537 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, dn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
3538 le
->metablob
.add_primary_dentry(dn
, in
, true, true, true);
3541 mds
->locker
->issue_new_caps(in
, cmode
, mdr
->session
, realm
, req
->is_replay());
3542 in
->authlock
.set_state(LOCK_EXCL
);
3543 in
->xattrlock
.set_state(LOCK_EXCL
);
3545 // make sure this inode gets into the journal
3546 le
->metablob
.add_opened_ino(in
->ino());
3547 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
3548 ls
->open_files
.push_back(&in
->item_open_file
);
3550 C_MDS_openc_finish
*fin
= new C_MDS_openc_finish(this, mdr
, dn
, in
, follows
);
3552 if (mdr
->client_request
->get_connection()->has_feature(CEPH_FEATURE_REPLY_CREATE_INODE
)) {
3553 dout(10) << "adding ino to reply to indicate inode was created" << dendl
;
3554 // add the file created flag onto the reply if create_flags features is supported
3555 ::encode(in
->inode
.ino
, mdr
->reply_extra_bl
);
3558 journal_and_reply(mdr
, in
, dn
, le
, fin
);
3560 // We hit_dir (via hit_inode) in our finish callback, but by then we might
3561 // have overshot the split size (multiple opencs in flight), so here is
3562 // an early chance to split the dir if this openc makes it oversized.
3563 mds
->balancer
->maybe_fragment(dir
, false);
3568 void Server::handle_client_readdir(MDRequestRef
& mdr
)
3570 MClientRequest
*req
= mdr
->client_request
;
3571 client_t client
= req
->get_source().num();
3572 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3573 CInode
*diri
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, false, true);
3576 // it's a directory, right?
3577 if (!diri
->is_dir()) {
3579 dout(10) << "reply to " << *req
<< " readdir -ENOTDIR" << dendl
;
3580 respond_to_request(mdr
, -ENOTDIR
);
3584 rdlocks
.insert(&diri
->filelock
);
3585 rdlocks
.insert(&diri
->dirfragtreelock
);
3587 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3590 if (!check_access(mdr
, diri
, MAY_READ
))
3594 frag_t fg
= (__u32
)req
->head
.args
.readdir
.frag
;
3595 unsigned req_flags
= (__u32
)req
->head
.args
.readdir
.flags
;
3596 string offset_str
= req
->get_path2();
3598 __u32 offset_hash
= 0;
3599 if (!offset_str
.empty())
3600 offset_hash
= ceph_frag_value(diri
->hash_dentry_name(offset_str
));
3602 offset_hash
= (__u32
)req
->head
.args
.readdir
.offset_hash
;
3604 dout(10) << " frag " << fg
<< " offset '" << offset_str
<< "'"
3605 << " offset_hash " << offset_hash
<< " flags " << req_flags
<< dendl
;
3607 // does the frag exist?
3608 if (diri
->dirfragtree
[fg
.value()] != fg
) {
3610 if (req_flags
& CEPH_READDIR_REPLY_BITFLAGS
) {
3611 if (fg
.contains((unsigned)offset_hash
)) {
3612 newfg
= diri
->dirfragtree
[offset_hash
];
3614 // client actually wants next frag
3615 newfg
= diri
->dirfragtree
[fg
.value()];
3619 newfg
= diri
->dirfragtree
[fg
.value()];
3621 dout(10) << " adjust frag " << fg
<< " -> " << newfg
<< " " << diri
->dirfragtree
<< dendl
;
3625 CDir
*dir
= try_open_auth_dirfrag(diri
, fg
, mdr
);
3629 dout(10) << "handle_client_readdir on " << *dir
<< dendl
;
3630 assert(dir
->is_auth());
3632 if (!dir
->is_complete()) {
3633 if (dir
->is_frozen()) {
3634 dout(7) << "dir is frozen " << *dir
<< dendl
;
3635 mds
->locker
->drop_locks(mdr
.get());
3636 mdr
->drop_local_auth_pins();
3637 dir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
3641 dout(10) << " incomplete dir contents for readdir on " << *dir
<< ", fetching" << dendl
;
3642 dir
->fetch(new C_MDS_RetryRequest(mdcache
, mdr
), true);
3646 #ifdef MDS_VERIFY_FRAGSTAT
3647 dir
->verify_fragstat();
3650 utime_t now
= ceph_clock_now();
3651 mdr
->set_mds_stamp(now
);
3653 snapid_t snapid
= mdr
->snapid
;
3654 dout(10) << "snapid " << snapid
<< dendl
;
3656 SnapRealm
*realm
= diri
->find_snaprealm();
3658 unsigned max
= req
->head
.args
.readdir
.max_entries
;
3660 max
= dir
->get_num_any(); // whatever, something big.
3661 unsigned max_bytes
= req
->head
.args
.readdir
.max_bytes
;
3663 // make sure at least one item can be encoded
3664 max_bytes
= (512 << 10) + g_conf
->mds_max_xattr_pairs_size
;
3668 dir
->encode_dirstat(dirbl
, mds
->get_nodeid());
3670 // count bytes available.
3671 // this isn't perfect, but we should capture the main variable/unbounded size items!
3672 int front_bytes
= dirbl
.length() + sizeof(__u32
) + sizeof(__u8
)*2;
3673 int bytes_left
= max_bytes
- front_bytes
;
3674 bytes_left
-= realm
->get_snap_trace().length();
3676 // build dir contents
3679 bool start
= !offset_hash
&& offset_str
.empty();
3680 // skip all dns < dentry_key_t(snapid, offset_str, offset_hash)
3681 dentry_key_t
skip_key(snapid
, offset_str
.c_str(), offset_hash
);
3682 auto it
= start
? dir
->begin() : dir
->lower_bound(skip_key
);
3683 bool end
= (it
== dir
->end());
3684 for (; !end
&& numfiles
< max
; end
= (it
== dir
->end())) {
3685 CDentry
*dn
= it
->second
;
3688 if (dn
->state_test(CDentry::STATE_PURGING
))
3691 bool dnp
= dn
->use_projected(client
, mdr
);
3692 CDentry::linkage_t
*dnl
= dnp
? dn
->get_projected_linkage() : dn
->get_linkage();
3697 if (dn
->last
< snapid
|| dn
->first
> snapid
) {
3698 dout(20) << "skipping non-overlapping snap " << *dn
<< dendl
;
3703 dentry_key_t
offset_key(dn
->last
, offset_str
.c_str(), offset_hash
);
3704 if (!(offset_key
< dn
->key()))
3708 CInode
*in
= dnl
->get_inode();
3710 if (in
&& in
->ino() == CEPH_INO_CEPH
)
3714 // better for the MDS to do the work, if we think the client will stat any of these files.
3715 if (dnl
->is_remote() && !in
) {
3716 in
= mdcache
->get_inode(dnl
->get_remote_ino());
3718 dn
->link_remote(dnl
, in
);
3719 } else if (dn
->state_test(CDentry::STATE_BADREMOTEINO
)) {
3720 dout(10) << "skipping bad remote ino on " << *dn
<< dendl
;
3723 // touch everything i _do_ have
3724 for (CDir::map_t::iterator p
= dir
->begin(); p
!= dir
->end(); ++p
)
3725 if (!p
->second
->get_linkage()->is_null())
3726 mdcache
->lru
.lru_touch(p
->second
);
3728 // already issued caps and leases, reply immediately.
3729 if (dnbl
.length() > 0) {
3730 mdcache
->open_remote_dentry(dn
, dnp
, new C_MDSInternalNoop
);
3731 dout(10) << " open remote dentry after caps were issued, stopping at "
3732 << dnbl
.length() << " < " << bytes_left
<< dendl
;
3736 mds
->locker
->drop_locks(mdr
.get());
3737 mdr
->drop_local_auth_pins();
3738 mdcache
->open_remote_dentry(dn
, dnp
, new C_MDS_RetryRequest(mdcache
, mdr
));
3744 if ((int)(dnbl
.length() + dn
->name
.length() + sizeof(__u32
) + sizeof(LeaseStat
)) > bytes_left
) {
3745 dout(10) << " ran out of room, stopping at " << dnbl
.length() << " < " << bytes_left
<< dendl
;
3749 unsigned start_len
= dnbl
.length();
3752 dout(12) << "including dn " << *dn
<< dendl
;
3753 ::encode(dn
->name
, dnbl
);
3754 mds
->locker
->issue_client_lease(dn
, client
, dnbl
, now
, mdr
->session
);
3757 dout(12) << "including inode " << *in
<< dendl
;
3758 int r
= in
->encode_inodestat(dnbl
, mdr
->session
, realm
, snapid
, bytes_left
- (int)dnbl
.length());
3760 // chop off dn->name, lease
3761 dout(10) << " ran out of room, stopping at " << start_len
<< " < " << bytes_left
<< dendl
;
3763 keep
.substr_of(dnbl
, 0, start_len
);
3771 mdcache
->lru
.lru_touch(dn
);
3776 flags
= CEPH_READDIR_FRAG_END
;
3778 flags
|= CEPH_READDIR_FRAG_COMPLETE
; // FIXME: what purpose does this serve
3780 // client only understand END and COMPLETE flags ?
3781 if (req_flags
& CEPH_READDIR_REPLY_BITFLAGS
) {
3782 flags
|= CEPH_READDIR_HASH_ORDER
| CEPH_READDIR_OFFSET_HASH
;
3785 // finish final blob
3786 ::encode(numfiles
, dirbl
);
3787 ::encode(flags
, dirbl
);
3788 dirbl
.claim_append(dnbl
);
3791 dout(10) << "reply to " << *req
<< " readdir num=" << numfiles
3792 << " bytes=" << dirbl
.length()
3793 << " start=" << (int)start
3794 << " end=" << (int)end
3796 mdr
->reply_extra_bl
= dirbl
;
3798 // bump popularity. NOTE: this doesn't quite capture it.
3799 mds
->balancer
->hit_dir(now
, dir
, META_POP_IRD
, -1, numfiles
);
3803 respond_to_request(mdr
, 0);
3808 // ===============================================================================
3813 * finisher for basic inode updates
3815 class C_MDS_inode_update_finish
: public ServerLogContext
{
3817 bool truncating_smaller
, changed_ranges
;
3819 C_MDS_inode_update_finish(Server
*s
, MDRequestRef
& r
, CInode
*i
,
3820 bool sm
=false, bool cr
=false) :
3821 ServerLogContext(s
, r
), in(i
), truncating_smaller(sm
), changed_ranges(cr
) { }
3822 void finish(int r
) override
{
3826 in
->pop_and_dirty_projected_inode(mdr
->ls
);
3829 // notify any clients
3830 if (truncating_smaller
&& in
->inode
.is_truncating()) {
3831 get_mds()->locker
->issue_truncate(in
);
3832 get_mds()->mdcache
->truncate_inode(in
, mdr
->ls
);
3835 get_mds()->balancer
->hit_inode(mdr
->get_mds_stamp(), in
, META_POP_IWR
);
3837 server
->respond_to_request(mdr
, 0);
3840 get_mds()->locker
->share_inode_max_size(in
);
3844 void Server::handle_client_file_setlock(MDRequestRef
& mdr
)
3846 MClientRequest
*req
= mdr
->client_request
;
3847 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3849 // get the inode to operate on, and set up any locks needed for that
3850 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
3854 xlocks
.insert(&cur
->flocklock
);
3855 /* acquire_locks will return true if it gets the locks. If it fails,
3856 it will redeliver this request at a later date, so drop the request.
3858 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
)) {
3859 dout(10) << "handle_client_file_setlock could not get locks!" << dendl
;
3863 // copy the lock change into a ceph_filelock so we can store/apply it
3864 ceph_filelock set_lock
;
3865 set_lock
.start
= req
->head
.args
.filelock_change
.start
;
3866 set_lock
.length
= req
->head
.args
.filelock_change
.length
;
3867 set_lock
.client
= req
->get_orig_source().num();
3868 set_lock
.owner
= req
->head
.args
.filelock_change
.owner
;
3869 set_lock
.pid
= req
->head
.args
.filelock_change
.pid
;
3870 set_lock
.type
= req
->head
.args
.filelock_change
.type
;
3871 bool will_wait
= req
->head
.args
.filelock_change
.wait
;
3873 dout(10) << "handle_client_file_setlock: " << set_lock
<< dendl
;
3875 ceph_lock_state_t
*lock_state
= NULL
;
3876 bool interrupt
= false;
3878 // get the appropriate lock state
3879 switch (req
->head
.args
.filelock_change
.rule
) {
3880 case CEPH_LOCK_FLOCK_INTR
:
3883 case CEPH_LOCK_FLOCK
:
3884 lock_state
= cur
->get_flock_lock_state();
3887 case CEPH_LOCK_FCNTL_INTR
:
3890 case CEPH_LOCK_FCNTL
:
3891 lock_state
= cur
->get_fcntl_lock_state();
3895 dout(10) << "got unknown lock type " << set_lock
.type
3896 << ", dropping request!" << dendl
;
3897 respond_to_request(mdr
, -EOPNOTSUPP
);
3901 dout(10) << " state prior to lock change: " << *lock_state
<< dendl
;
3902 if (CEPH_LOCK_UNLOCK
== set_lock
.type
) {
3903 list
<ceph_filelock
> activated_locks
;
3904 list
<MDSInternalContextBase
*> waiters
;
3905 if (lock_state
->is_waiting(set_lock
)) {
3906 dout(10) << " unlock removing waiting lock " << set_lock
<< dendl
;
3907 lock_state
->remove_waiting(set_lock
);
3908 cur
->take_waiting(CInode::WAIT_FLOCK
, waiters
);
3909 } else if (!interrupt
) {
3910 dout(10) << " unlock attempt on " << set_lock
<< dendl
;
3911 lock_state
->remove_lock(set_lock
, activated_locks
);
3912 cur
->take_waiting(CInode::WAIT_FLOCK
, waiters
);
3914 mds
->queue_waiters(waiters
);
3916 respond_to_request(mdr
, 0);
3918 dout(10) << " lock attempt on " << set_lock
<< dendl
;
3919 bool deadlock
= false;
3920 if (mdr
->more()->flock_was_waiting
&&
3921 !lock_state
->is_waiting(set_lock
)) {
3922 dout(10) << " was waiting for lock but not anymore, must have been canceled " << set_lock
<< dendl
;
3923 respond_to_request(mdr
, -EINTR
);
3924 } else if (!lock_state
->add_lock(set_lock
, will_wait
, mdr
->more()->flock_was_waiting
, &deadlock
)) {
3925 dout(10) << " it failed on this attempt" << dendl
;
3926 // couldn't set lock right now
3928 respond_to_request(mdr
, -EDEADLK
);
3929 } else if (!will_wait
) {
3930 respond_to_request(mdr
, -EWOULDBLOCK
);
3932 dout(10) << " added to waiting list" << dendl
;
3933 assert(lock_state
->is_waiting(set_lock
));
3934 mdr
->more()->flock_was_waiting
= true;
3935 mds
->locker
->drop_locks(mdr
.get());
3936 mdr
->drop_local_auth_pins();
3937 cur
->add_waiter(CInode::WAIT_FLOCK
, new C_MDS_RetryRequest(mdcache
, mdr
));
3940 respond_to_request(mdr
, 0);
3942 dout(10) << " state after lock change: " << *lock_state
<< dendl
;
3945 void Server::handle_client_file_readlock(MDRequestRef
& mdr
)
3947 MClientRequest
*req
= mdr
->client_request
;
3948 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3950 // get the inode to operate on, and set up any locks needed for that
3951 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
3955 /* acquire_locks will return true if it gets the locks. If it fails,
3956 it will redeliver this request at a later date, so drop the request.
3958 rdlocks
.insert(&cur
->flocklock
);
3959 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
)) {
3960 dout(10) << "handle_client_file_readlock could not get locks!" << dendl
;
3964 // copy the lock change into a ceph_filelock so we can store/apply it
3965 ceph_filelock checking_lock
;
3966 checking_lock
.start
= req
->head
.args
.filelock_change
.start
;
3967 checking_lock
.length
= req
->head
.args
.filelock_change
.length
;
3968 checking_lock
.client
= req
->get_orig_source().num();
3969 checking_lock
.owner
= req
->head
.args
.filelock_change
.owner
;
3970 checking_lock
.pid
= req
->head
.args
.filelock_change
.pid
;
3971 checking_lock
.type
= req
->head
.args
.filelock_change
.type
;
3973 // get the appropriate lock state
3974 ceph_lock_state_t
*lock_state
= NULL
;
3975 switch (req
->head
.args
.filelock_change
.rule
) {
3976 case CEPH_LOCK_FLOCK
:
3977 lock_state
= cur
->get_flock_lock_state();
3980 case CEPH_LOCK_FCNTL
:
3981 lock_state
= cur
->get_fcntl_lock_state();
3985 dout(10) << "got unknown lock type " << checking_lock
.type
<< dendl
;
3986 respond_to_request(mdr
, -EINVAL
);
3989 lock_state
->look_for_lock(checking_lock
);
3992 ::encode(checking_lock
, lock_bl
);
3994 mdr
->reply_extra_bl
= lock_bl
;
3995 respond_to_request(mdr
, 0);
3998 void Server::handle_client_setattr(MDRequestRef
& mdr
)
4000 MClientRequest
*req
= mdr
->client_request
;
4001 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4002 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
4005 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4006 respond_to_request(mdr
, -EROFS
);
4009 if (cur
->ino() < MDS_INO_SYSTEM_BASE
&& !cur
->is_base()) {
4010 respond_to_request(mdr
, -EPERM
);
4014 __u32 mask
= req
->head
.args
.setattr
.mask
;
4015 __u32 access_mask
= MAY_WRITE
;
4018 if (mask
& (CEPH_SETATTR_MODE
|CEPH_SETATTR_UID
|CEPH_SETATTR_GID
|CEPH_SETATTR_BTIME
|CEPH_SETATTR_KILL_SGUID
))
4019 xlocks
.insert(&cur
->authlock
);
4020 if (mask
& (CEPH_SETATTR_MTIME
|CEPH_SETATTR_ATIME
|CEPH_SETATTR_SIZE
))
4021 xlocks
.insert(&cur
->filelock
);
4022 if (mask
& CEPH_SETATTR_CTIME
)
4023 wrlocks
.insert(&cur
->versionlock
);
4025 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4028 if ((mask
& CEPH_SETATTR_UID
) && (cur
->inode
.uid
!= req
->head
.args
.setattr
.uid
))
4029 access_mask
|= MAY_CHOWN
;
4031 if ((mask
& CEPH_SETATTR_GID
) && (cur
->inode
.gid
!= req
->head
.args
.setattr
.gid
))
4032 access_mask
|= MAY_CHGRP
;
4034 if (!check_access(mdr
, cur
, access_mask
))
4037 // trunc from bigger -> smaller?
4038 inode_t
*pi
= cur
->get_projected_inode();
4040 uint64_t old_size
= MAX(pi
->size
, req
->head
.args
.setattr
.old_size
);
4042 // ENOSPC on growing file while full, but allow shrinks
4043 if (is_full
&& req
->head
.args
.setattr
.size
> old_size
) {
4044 dout(20) << __func__
<< ": full, responding ENOSPC to setattr with larger size" << dendl
;
4045 respond_to_request(mdr
, -ENOSPC
);
4049 bool truncating_smaller
= false;
4050 if (mask
& CEPH_SETATTR_SIZE
) {
4051 truncating_smaller
= req
->head
.args
.setattr
.size
< old_size
;
4052 if (truncating_smaller
&& pi
->is_truncating()) {
4053 dout(10) << " waiting for pending truncate from " << pi
->truncate_from
4054 << " to " << pi
->truncate_size
<< " to complete on " << *cur
<< dendl
;
4055 mds
->locker
->drop_locks(mdr
.get());
4056 mdr
->drop_local_auth_pins();
4057 cur
->add_waiter(CInode::WAIT_TRUNC
, new C_MDS_RetryRequest(mdcache
, mdr
));
4062 bool changed_ranges
= false;
4065 mdr
->ls
= mdlog
->get_current_segment();
4066 EUpdate
*le
= new EUpdate(mdlog
, "setattr");
4067 mdlog
->start_entry(le
);
4069 pi
= cur
->project_inode();
4071 if (mask
& CEPH_SETATTR_UID
)
4072 pi
->uid
= req
->head
.args
.setattr
.uid
;
4073 if (mask
& CEPH_SETATTR_GID
)
4074 pi
->gid
= req
->head
.args
.setattr
.gid
;
4076 if (mask
& CEPH_SETATTR_MODE
)
4077 pi
->mode
= (pi
->mode
& ~07777) | (req
->head
.args
.setattr
.mode
& 07777);
4078 else if ((mask
& (CEPH_SETATTR_UID
|CEPH_SETATTR_GID
|CEPH_SETATTR_KILL_SGUID
)) &&
4079 S_ISREG(pi
->mode
) &&
4080 (pi
->mode
& (S_IXUSR
|S_IXGRP
|S_IXOTH
))) {
4081 pi
->mode
&= ~(S_ISUID
|S_ISGID
);
4084 if (mask
& CEPH_SETATTR_MTIME
)
4085 pi
->mtime
= req
->head
.args
.setattr
.mtime
;
4086 if (mask
& CEPH_SETATTR_ATIME
)
4087 pi
->atime
= req
->head
.args
.setattr
.atime
;
4088 if (mask
& CEPH_SETATTR_BTIME
)
4089 pi
->btime
= req
->head
.args
.setattr
.btime
;
4090 if (mask
& (CEPH_SETATTR_ATIME
| CEPH_SETATTR_MTIME
| CEPH_SETATTR_BTIME
))
4091 pi
->time_warp_seq
++; // maybe not a timewarp, but still a serialization point.
4092 if (mask
& CEPH_SETATTR_SIZE
) {
4093 if (truncating_smaller
) {
4094 pi
->truncate(old_size
, req
->head
.args
.setattr
.size
);
4095 le
->metablob
.add_truncate_start(cur
->ino());
4097 pi
->size
= req
->head
.args
.setattr
.size
;
4098 pi
->rstat
.rbytes
= pi
->size
;
4100 pi
->mtime
= mdr
->get_op_stamp();
4102 // adjust client's max_size?
4103 map
<client_t
,client_writeable_range_t
> new_ranges
;
4104 bool max_increased
= false;
4105 mds
->locker
->calc_new_client_ranges(cur
, pi
->size
, &new_ranges
, &max_increased
);
4106 if (pi
->client_ranges
!= new_ranges
) {
4107 dout(10) << " client_ranges " << pi
->client_ranges
<< " -> " << new_ranges
<< dendl
;
4108 pi
->client_ranges
= new_ranges
;
4109 changed_ranges
= true;
4113 pi
->version
= cur
->pre_dirty();
4114 pi
->ctime
= mdr
->get_op_stamp();
4118 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4119 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4120 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4122 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
,
4123 truncating_smaller
, changed_ranges
));
4125 // flush immediately if there are readers/writers waiting
4126 if (xlocks
.count(&cur
->filelock
) &&
4127 (cur
->get_caps_wanted() & (CEPH_CAP_FILE_RD
|CEPH_CAP_FILE_WR
)))
4128 mds
->mdlog
->flush();
4131 /* Takes responsibility for mdr */
4132 void Server::do_open_truncate(MDRequestRef
& mdr
, int cmode
)
4134 CInode
*in
= mdr
->in
[0];
4135 client_t client
= mdr
->get_client();
4138 dout(10) << "do_open_truncate " << *in
<< dendl
;
4140 SnapRealm
*realm
= in
->find_snaprealm();
4141 mds
->locker
->issue_new_caps(in
, cmode
, mdr
->session
, realm
, mdr
->client_request
->is_replay());
4143 mdr
->ls
= mdlog
->get_current_segment();
4144 EUpdate
*le
= new EUpdate(mdlog
, "open_truncate");
4145 mdlog
->start_entry(le
);
4148 inode_t
*pi
= in
->project_inode();
4149 pi
->version
= in
->pre_dirty();
4150 pi
->mtime
= pi
->ctime
= mdr
->get_op_stamp();
4153 uint64_t old_size
= MAX(pi
->size
, mdr
->client_request
->head
.args
.open
.old_size
);
4155 pi
->truncate(old_size
, 0);
4156 le
->metablob
.add_truncate_start(in
->ino());
4159 bool changed_ranges
= false;
4160 if (cmode
& CEPH_FILE_MODE_WR
) {
4161 pi
->client_ranges
[client
].range
.first
= 0;
4162 pi
->client_ranges
[client
].range
.last
= pi
->get_layout_size_increment();
4163 pi
->client_ranges
[client
].follows
= in
->find_snaprealm()->get_newest_seq();
4164 changed_ranges
= true;
4167 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
4169 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, 0, PREDIRTY_PRIMARY
);
4170 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, in
);
4172 // make sure ino gets into the journal
4173 le
->metablob
.add_opened_ino(in
->ino());
4174 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
4175 ls
->open_files
.push_back(&in
->item_open_file
);
4177 mdr
->o_trunc
= true;
4180 if (mdr
->client_request
->get_dentry_wanted()) {
4181 assert(mdr
->dn
[0].size());
4182 dn
= mdr
->dn
[0].back();
4185 journal_and_reply(mdr
, in
, dn
, le
, new C_MDS_inode_update_finish(this, mdr
, in
, old_size
> 0,
4187 // Although the `open` part can give an early reply, the truncation won't
4188 // happen until our EUpdate is persistent, to give the client a prompt
4189 // response we must also flush that event.
4194 /* This function cleans up the passed mdr */
4195 void Server::handle_client_setlayout(MDRequestRef
& mdr
)
4197 MClientRequest
*req
= mdr
->client_request
;
4198 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4199 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
4202 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4203 respond_to_request(mdr
, -EROFS
);
4206 if (!cur
->is_file()) {
4207 respond_to_request(mdr
, -EINVAL
);
4210 if (cur
->get_projected_inode()->size
||
4211 cur
->get_projected_inode()->truncate_seq
> 1) {
4212 respond_to_request(mdr
, -ENOTEMPTY
);
4217 file_layout_t layout
= cur
->get_projected_inode()->layout
;
4218 // save existing layout for later
4219 const auto old_layout
= layout
;
4221 int access
= MAY_WRITE
;
4223 if (req
->head
.args
.setlayout
.layout
.fl_object_size
> 0)
4224 layout
.object_size
= req
->head
.args
.setlayout
.layout
.fl_object_size
;
4225 if (req
->head
.args
.setlayout
.layout
.fl_stripe_unit
> 0)
4226 layout
.stripe_unit
= req
->head
.args
.setlayout
.layout
.fl_stripe_unit
;
4227 if (req
->head
.args
.setlayout
.layout
.fl_stripe_count
> 0)
4228 layout
.stripe_count
=req
->head
.args
.setlayout
.layout
.fl_stripe_count
;
4229 if (req
->head
.args
.setlayout
.layout
.fl_pg_pool
> 0) {
4230 layout
.pool_id
= req
->head
.args
.setlayout
.layout
.fl_pg_pool
;
4232 // make sure we have as new a map as the client
4233 if (req
->get_mdsmap_epoch() > mds
->mdsmap
->get_epoch()) {
4234 mds
->wait_for_mdsmap(req
->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache
, mdr
));
4239 // Don't permit layout modifications without 'p' caps
4240 if (layout
!= old_layout
) {
4241 access
|= MAY_SET_VXATTR
;
4244 if (!layout
.is_valid()) {
4245 dout(10) << "bad layout" << dendl
;
4246 respond_to_request(mdr
, -EINVAL
);
4249 if (!mds
->mdsmap
->is_data_pool(layout
.pool_id
)) {
4250 dout(10) << " invalid data pool " << layout
.pool_id
<< dendl
;
4251 respond_to_request(mdr
, -EINVAL
);
4255 xlocks
.insert(&cur
->filelock
);
4256 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4259 if (!check_access(mdr
, cur
, access
))
4263 inode_t
*pi
= cur
->project_inode();
4264 pi
->layout
= layout
;
4265 // add the old pool to the inode
4266 pi
->add_old_pool(old_layout
.pool_id
);
4267 pi
->version
= cur
->pre_dirty();
4268 pi
->ctime
= mdr
->get_op_stamp();
4272 mdr
->ls
= mdlog
->get_current_segment();
4273 EUpdate
*le
= new EUpdate(mdlog
, "setlayout");
4274 mdlog
->start_entry(le
);
4275 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4276 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4277 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4279 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4282 void Server::handle_client_setdirlayout(MDRequestRef
& mdr
)
4284 MClientRequest
*req
= mdr
->client_request
;
4285 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4286 file_layout_t
*dir_layout
= NULL
;
4287 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true, false, &dir_layout
);
4290 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4291 respond_to_request(mdr
, -EROFS
);
4295 if (!cur
->is_dir()) {
4296 respond_to_request(mdr
, -ENOTDIR
);
4300 xlocks
.insert(&cur
->policylock
);
4301 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4305 const inode_t
*old_pi
= cur
->get_projected_inode();
4306 file_layout_t layout
;
4307 if (old_pi
->has_layout())
4308 layout
= old_pi
->layout
;
4309 else if (dir_layout
)
4310 layout
= *dir_layout
;
4312 layout
= mdcache
->default_file_layout
;
4314 // Level of access required to complete
4315 int access
= MAY_WRITE
;
4317 const auto old_layout
= layout
;
4319 if (req
->head
.args
.setlayout
.layout
.fl_object_size
> 0)
4320 layout
.object_size
= req
->head
.args
.setlayout
.layout
.fl_object_size
;
4321 if (req
->head
.args
.setlayout
.layout
.fl_stripe_unit
> 0)
4322 layout
.stripe_unit
= req
->head
.args
.setlayout
.layout
.fl_stripe_unit
;
4323 if (req
->head
.args
.setlayout
.layout
.fl_stripe_count
> 0)
4324 layout
.stripe_count
=req
->head
.args
.setlayout
.layout
.fl_stripe_count
;
4325 if (req
->head
.args
.setlayout
.layout
.fl_pg_pool
> 0) {
4326 layout
.pool_id
= req
->head
.args
.setlayout
.layout
.fl_pg_pool
;
4327 // make sure we have as new a map as the client
4328 if (req
->get_mdsmap_epoch() > mds
->mdsmap
->get_epoch()) {
4329 mds
->wait_for_mdsmap(req
->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache
, mdr
));
4334 if (layout
!= old_layout
) {
4335 access
|= MAY_SET_VXATTR
;
4338 if (!layout
.is_valid()) {
4339 dout(10) << "bad layout" << dendl
;
4340 respond_to_request(mdr
, -EINVAL
);
4343 if (!mds
->mdsmap
->is_data_pool(layout
.pool_id
)) {
4344 dout(10) << " invalid data pool " << layout
.pool_id
<< dendl
;
4345 respond_to_request(mdr
, -EINVAL
);
4349 if (!check_access(mdr
, cur
, access
))
4352 inode_t
*pi
= cur
->project_inode();
4353 pi
->layout
= layout
;
4354 pi
->version
= cur
->pre_dirty();
4357 mdr
->ls
= mdlog
->get_current_segment();
4358 EUpdate
*le
= new EUpdate(mdlog
, "setlayout");
4359 mdlog
->start_entry(le
);
4360 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4361 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4362 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4364 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4369 int Server::parse_layout_vxattr(string name
, string value
, const OSDMap
& osdmap
,
4370 file_layout_t
*layout
, bool validate
)
4372 dout(20) << "parse_layout_vxattr name " << name
<< " value '" << value
<< "'" << dendl
;
4374 if (name
== "layout") {
4375 string::iterator begin
= value
.begin();
4376 string::iterator end
= value
.end();
4377 keys_and_values
<string::iterator
> p
; // create instance of parser
4378 std::map
<string
, string
> m
; // map to receive results
4379 if (!qi::parse(begin
, end
, p
, m
)) { // returns true if successful
4382 string
left(begin
, end
);
4383 dout(10) << " parsed " << m
<< " left '" << left
<< "'" << dendl
;
4386 for (map
<string
,string
>::iterator q
= m
.begin(); q
!= m
.end(); ++q
) {
4387 // Skip validation on each attr, we do it once at the end (avoid
4388 // rejecting intermediate states if the overall result is ok)
4389 int r
= parse_layout_vxattr(string("layout.") + q
->first
, q
->second
,
4390 osdmap
, layout
, false);
4394 } else if (name
== "layout.object_size") {
4395 layout
->object_size
= boost::lexical_cast
<unsigned>(value
);
4396 } else if (name
== "layout.stripe_unit") {
4397 layout
->stripe_unit
= boost::lexical_cast
<unsigned>(value
);
4398 } else if (name
== "layout.stripe_count") {
4399 layout
->stripe_count
= boost::lexical_cast
<unsigned>(value
);
4400 } else if (name
== "layout.pool") {
4402 layout
->pool_id
= boost::lexical_cast
<unsigned>(value
);
4403 } catch (boost::bad_lexical_cast
const&) {
4404 int64_t pool
= osdmap
.lookup_pg_pool_name(value
);
4406 dout(10) << " unknown pool " << value
<< dendl
;
4409 layout
->pool_id
= pool
;
4411 } else if (name
== "layout.pool_namespace") {
4412 layout
->pool_ns
= value
;
4414 dout(10) << " unknown layout vxattr " << name
<< dendl
;
4417 } catch (boost::bad_lexical_cast
const&) {
4418 dout(10) << "bad vxattr value, unable to parse int for " << name
<< dendl
;
4422 if (validate
&& !layout
->is_valid()) {
4423 dout(10) << "bad layout" << dendl
;
4426 if (!mds
->mdsmap
->is_data_pool(layout
->pool_id
)) {
4427 dout(10) << " invalid data pool " << layout
->pool_id
<< dendl
;
4433 int Server::parse_quota_vxattr(string name
, string value
, quota_info_t
*quota
)
4435 dout(20) << "parse_quota_vxattr name " << name
<< " value '" << value
<< "'" << dendl
;
4437 if (name
== "quota") {
4438 string::iterator begin
= value
.begin();
4439 string::iterator end
= value
.end();
4440 keys_and_values
<string::iterator
> p
; // create instance of parser
4441 std::map
<string
, string
> m
; // map to receive results
4442 if (!qi::parse(begin
, end
, p
, m
)) { // returns true if successful
4445 string
left(begin
, end
);
4446 dout(10) << " parsed " << m
<< " left '" << left
<< "'" << dendl
;
4449 for (map
<string
,string
>::iterator q
= m
.begin(); q
!= m
.end(); ++q
) {
4450 int r
= parse_quota_vxattr(string("quota.") + q
->first
, q
->second
, quota
);
4454 } else if (name
== "quota.max_bytes") {
4455 int64_t q
= boost::lexical_cast
<int64_t>(value
);
4458 quota
->max_bytes
= q
;
4459 } else if (name
== "quota.max_files") {
4460 int64_t q
= boost::lexical_cast
<int64_t>(value
);
4463 quota
->max_files
= q
;
4465 dout(10) << " unknown quota vxattr " << name
<< dendl
;
4468 } catch (boost::bad_lexical_cast
const&) {
4469 dout(10) << "bad vxattr value, unable to parse int for " << name
<< dendl
;
4473 if (!quota
->is_valid()) {
4474 dout(10) << "bad quota" << dendl
;
4481 * Verify that the file layout attribute carried by client
4482 * is well-formatted.
4483 * Return 0 on success, otherwise this function takes
4484 * responsibility for the passed mdr.
4486 int Server::check_layout_vxattr(MDRequestRef
& mdr
,
4489 file_layout_t
*layout
)
4491 MClientRequest
*req
= mdr
->client_request
;
4495 mds
->objecter
->with_osdmap([&](const OSDMap
& osdmap
) {
4496 r
= parse_layout_vxattr(name
, value
, osdmap
, layout
);
4497 epoch
= osdmap
.get_epoch();
4502 // we don't have the specified pool, make sure our map
4503 // is newer than or as new as the client.
4504 epoch_t req_epoch
= req
->get_osdmap_epoch();
4506 if (req_epoch
> epoch
) {
4508 // well, our map is older. consult mds.
4509 Context
*fin
= new C_IO_Wrapper(mds
, new C_MDS_RetryRequest(mdcache
, mdr
));
4511 if (!mds
->objecter
->wait_for_map(req_epoch
, fin
))
4512 return r
; // wait, fin will retry this request later
4516 // now we have at least as new a map as the client, try again.
4517 mds
->objecter
->with_osdmap([&](const OSDMap
& osdmap
) {
4518 r
= parse_layout_vxattr(name
, value
, osdmap
, layout
);
4519 epoch
= osdmap
.get_epoch();
4522 assert(epoch
>= req_epoch
); // otherwise wait_for_map() told a lie
4524 } else if (req_epoch
== 0 && !mdr
->waited_for_osdmap
) {
4526 // For compatibility with client w/ old code, we still need get the
4527 // latest map. One day if COMPACT_VERSION of MClientRequest >=3,
4528 // we can remove those code.
4529 mdr
->waited_for_osdmap
= true;
4530 mds
->objecter
->wait_for_latest_osdmap(new C_IO_Wrapper(
4531 mds
, new C_MDS_RetryRequest(mdcache
, mdr
)));
4541 respond_to_request(mdr
, r
);
4549 void Server::handle_set_vxattr(MDRequestRef
& mdr
, CInode
*cur
,
4550 file_layout_t
*dir_layout
,
4551 set
<SimpleLock
*> rdlocks
,
4552 set
<SimpleLock
*> wrlocks
,
4553 set
<SimpleLock
*> xlocks
)
4555 MClientRequest
*req
= mdr
->client_request
;
4556 string
name(req
->get_path2());
4557 bufferlist bl
= req
->get_data();
4558 string
value (bl
.c_str(), bl
.length());
4559 dout(10) << "handle_set_vxattr " << name
4560 << " val " << value
.length()
4561 << " bytes on " << *cur
4567 if (!check_access(mdr
, cur
, MAY_SET_VXATTR
)) {
4571 if (name
.compare(0, 15, "ceph.dir.layout") == 0) {
4572 if (!cur
->is_dir()) {
4573 respond_to_request(mdr
, -EINVAL
);
4577 file_layout_t layout
;
4578 if (cur
->get_projected_inode()->has_layout())
4579 layout
= cur
->get_projected_inode()->layout
;
4580 else if (dir_layout
)
4581 layout
= *dir_layout
;
4583 layout
= mdcache
->default_file_layout
;
4585 rest
= name
.substr(name
.find("layout"));
4586 if (check_layout_vxattr(mdr
, rest
, value
, &layout
) < 0)
4589 xlocks
.insert(&cur
->policylock
);
4590 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4593 pi
= cur
->project_inode();
4594 pi
->layout
= layout
;
4595 } else if (name
.compare(0, 16, "ceph.file.layout") == 0) {
4596 if (!cur
->is_file()) {
4597 respond_to_request(mdr
, -EINVAL
);
4600 if (cur
->get_projected_inode()->size
||
4601 cur
->get_projected_inode()->truncate_seq
> 1) {
4602 respond_to_request(mdr
, -ENOTEMPTY
);
4605 file_layout_t layout
= cur
->get_projected_inode()->layout
;
4606 rest
= name
.substr(name
.find("layout"));
4607 if (check_layout_vxattr(mdr
, rest
, value
, &layout
) < 0)
4610 xlocks
.insert(&cur
->filelock
);
4611 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4614 pi
= cur
->project_inode();
4615 int64_t old_pool
= pi
->layout
.pool_id
;
4616 pi
->add_old_pool(old_pool
);
4617 pi
->layout
= layout
;
4618 pi
->ctime
= mdr
->get_op_stamp();
4619 } else if (name
.compare(0, 10, "ceph.quota") == 0) {
4620 if (!cur
->is_dir() || cur
->is_root()) {
4621 respond_to_request(mdr
, -EINVAL
);
4625 quota_info_t quota
= cur
->get_projected_inode()->quota
;
4627 rest
= name
.substr(name
.find("quota"));
4628 int r
= parse_quota_vxattr(rest
, value
, "a
);
4630 respond_to_request(mdr
, r
);
4634 xlocks
.insert(&cur
->policylock
);
4635 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4638 pi
= cur
->project_inode();
4640 } else if (name
.find("ceph.dir.pin") == 0) {
4641 if (!cur
->is_dir() || cur
->is_root()) {
4642 respond_to_request(mdr
, -EINVAL
);
4648 rank
= boost::lexical_cast
<mds_rank_t
>(value
);
4649 if (rank
< 0) rank
= MDS_RANK_NONE
;
4650 } catch (boost::bad_lexical_cast
const&) {
4651 dout(10) << "bad vxattr value, unable to parse int for " << name
<< dendl
;
4652 respond_to_request(mdr
, -EINVAL
);
4656 xlocks
.insert(&cur
->policylock
);
4657 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4660 pi
= cur
->project_inode();
4661 cur
->set_export_pin(rank
);
4663 dout(10) << " unknown vxattr " << name
<< dendl
;
4664 respond_to_request(mdr
, -EINVAL
);
4669 pi
->ctime
= mdr
->get_op_stamp();
4670 pi
->version
= cur
->pre_dirty();
4672 pi
->update_backtrace();
4675 mdr
->ls
= mdlog
->get_current_segment();
4676 EUpdate
*le
= new EUpdate(mdlog
, "set vxattr layout");
4677 mdlog
->start_entry(le
);
4678 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4679 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4680 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4682 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4686 void Server::handle_remove_vxattr(MDRequestRef
& mdr
, CInode
*cur
,
4687 file_layout_t
*dir_layout
,
4688 set
<SimpleLock
*> rdlocks
,
4689 set
<SimpleLock
*> wrlocks
,
4690 set
<SimpleLock
*> xlocks
)
4692 MClientRequest
*req
= mdr
->client_request
;
4693 string
name(req
->get_path2());
4695 dout(10) << __func__
<< " " << name
<< " on " << *cur
<< dendl
;
4697 if (name
== "ceph.dir.layout") {
4698 if (!cur
->is_dir()) {
4699 respond_to_request(mdr
, -ENODATA
);
4702 if (cur
->is_root()) {
4703 dout(10) << "can't remove layout policy on the root directory" << dendl
;
4704 respond_to_request(mdr
, -EINVAL
);
4708 if (!cur
->get_projected_inode()->has_layout()) {
4709 respond_to_request(mdr
, -ENODATA
);
4713 xlocks
.insert(&cur
->policylock
);
4714 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4717 inode_t
*pi
= cur
->project_inode();
4719 pi
->version
= cur
->pre_dirty();
4722 mdr
->ls
= mdlog
->get_current_segment();
4723 EUpdate
*le
= new EUpdate(mdlog
, "remove dir layout vxattr");
4724 mdlog
->start_entry(le
);
4725 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4726 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4727 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4729 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4731 } else if (name
== "ceph.dir.layout.pool_namespace"
4732 || name
== "ceph.file.layout.pool_namespace") {
4733 // Namespace is the only layout field that has a meaningful
4734 // null/none value (empty string, means default layout). Is equivalent
4735 // to a setxattr with empty string: pass through the empty payload of
4736 // the rmxattr request to do this.
4737 handle_set_vxattr(mdr
, cur
, dir_layout
, rdlocks
, wrlocks
, xlocks
);
4741 respond_to_request(mdr
, -ENODATA
);
4744 class C_MDS_inode_xattr_update_finish
: public ServerLogContext
{
4748 C_MDS_inode_xattr_update_finish(Server
*s
, MDRequestRef
& r
, CInode
*i
) :
4749 ServerLogContext(s
, r
), in(i
) { }
4750 void finish(int r
) override
{
4754 in
->pop_and_dirty_projected_inode(mdr
->ls
);
4758 get_mds()->balancer
->hit_inode(mdr
->get_mds_stamp(), in
, META_POP_IWR
);
4760 server
->respond_to_request(mdr
, 0);
4764 void Server::handle_client_setxattr(MDRequestRef
& mdr
)
4766 MClientRequest
*req
= mdr
->client_request
;
4767 string
name(req
->get_path2());
4768 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4771 file_layout_t
*dir_layout
= NULL
;
4772 if (name
.compare(0, 15, "ceph.dir.layout") == 0)
4773 cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true, false, &dir_layout
);
4775 cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
4779 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4780 respond_to_request(mdr
, -EROFS
);
4784 int flags
= req
->head
.args
.setxattr
.flags
;
4786 // magic ceph.* namespace?
4787 if (name
.compare(0, 5, "ceph.") == 0) {
4788 handle_set_vxattr(mdr
, cur
, dir_layout
, rdlocks
, wrlocks
, xlocks
);
4792 xlocks
.insert(&cur
->xattrlock
);
4793 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4796 if (!check_access(mdr
, cur
, MAY_WRITE
))
4799 map
<string
, bufferptr
> *pxattrs
= cur
->get_projected_xattrs();
4800 size_t len
= req
->get_data().length();
4801 size_t inc
= len
+ name
.length();
4803 // check xattrs kv pairs size
4804 size_t cur_xattrs_size
= 0;
4805 for (const auto& p
: *pxattrs
) {
4806 if ((flags
& CEPH_XATTR_REPLACE
) && (name
.compare(p
.first
) == 0)) {
4809 cur_xattrs_size
+= p
.first
.length() + p
.second
.length();
4812 if (((cur_xattrs_size
+ inc
) > g_conf
->mds_max_xattr_pairs_size
)) {
4813 dout(10) << "xattr kv pairs size too big. cur_xattrs_size "
4814 << cur_xattrs_size
<< ", inc " << inc
<< dendl
;
4815 respond_to_request(mdr
, -ENOSPC
);
4819 if ((flags
& CEPH_XATTR_CREATE
) && pxattrs
->count(name
)) {
4820 dout(10) << "setxattr '" << name
<< "' XATTR_CREATE and EEXIST on " << *cur
<< dendl
;
4821 respond_to_request(mdr
, -EEXIST
);
4824 if ((flags
& CEPH_XATTR_REPLACE
) && !pxattrs
->count(name
)) {
4825 dout(10) << "setxattr '" << name
<< "' XATTR_REPLACE and ENODATA on " << *cur
<< dendl
;
4826 respond_to_request(mdr
, -ENODATA
);
4830 dout(10) << "setxattr '" << name
<< "' len " << len
<< " on " << *cur
<< dendl
;
4833 map
<string
,bufferptr
> *px
= new map
<string
,bufferptr
>;
4834 inode_t
*pi
= cur
->project_inode(px
);
4835 pi
->version
= cur
->pre_dirty();
4836 pi
->ctime
= mdr
->get_op_stamp();
4838 pi
->xattr_version
++;
4840 if (!(flags
& CEPH_XATTR_REMOVE
)) {
4841 (*px
)[name
] = buffer::create(len
);
4843 req
->get_data().copy(0, len
, (*px
)[name
].c_str());
4847 mdr
->ls
= mdlog
->get_current_segment();
4848 EUpdate
*le
= new EUpdate(mdlog
, "setxattr");
4849 mdlog
->start_entry(le
);
4850 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4851 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4852 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4854 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4857 void Server::handle_client_removexattr(MDRequestRef
& mdr
)
4859 MClientRequest
*req
= mdr
->client_request
;
4860 string
name(req
->get_path2());
4861 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4862 file_layout_t
*dir_layout
= NULL
;
4864 if (name
== "ceph.dir.layout")
4865 cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true, false, &dir_layout
);
4867 cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
4871 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4872 respond_to_request(mdr
, -EROFS
);
4876 if (name
.compare(0, 5, "ceph.") == 0) {
4877 handle_remove_vxattr(mdr
, cur
, dir_layout
, rdlocks
, wrlocks
, xlocks
);
4881 xlocks
.insert(&cur
->xattrlock
);
4882 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4885 map
<string
, bufferptr
> *pxattrs
= cur
->get_projected_xattrs();
4886 if (pxattrs
->count(name
) == 0) {
4887 dout(10) << "removexattr '" << name
<< "' and ENODATA on " << *cur
<< dendl
;
4888 respond_to_request(mdr
, -ENODATA
);
4892 dout(10) << "removexattr '" << name
<< "' on " << *cur
<< dendl
;
4895 map
<string
,bufferptr
> *px
= new map
<string
,bufferptr
>;
4896 inode_t
*pi
= cur
->project_inode(px
);
4897 pi
->version
= cur
->pre_dirty();
4898 pi
->ctime
= mdr
->get_op_stamp();
4900 pi
->xattr_version
++;
4904 mdr
->ls
= mdlog
->get_current_segment();
4905 EUpdate
*le
= new EUpdate(mdlog
, "removexattr");
4906 mdlog
->start_entry(le
);
4907 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4908 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4909 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4911 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4915 // =================================================================
4916 // DIRECTORY and NAMESPACE OPS
4919 // ------------------------------------------------
4923 class C_MDS_mknod_finish
: public ServerLogContext
{
4927 C_MDS_mknod_finish(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CInode
*ni
) :
4928 ServerLogContext(s
, r
), dn(d
), newi(ni
) {}
4929 void finish(int r
) override
{
4933 dn
->pop_projected_linkage();
4935 // be a bit hacky with the inode version, here.. we decrement it
4936 // just to keep mark_dirty() happen. (we didn't bother projecting
4937 // a new version of hte inode since it's just been created)
4938 newi
->inode
.version
--;
4939 newi
->mark_dirty(newi
->inode
.version
+ 1, mdr
->ls
);
4940 newi
->_mark_dirty_parent(mdr
->ls
, true);
4943 if (newi
->inode
.is_dir()) {
4944 CDir
*dir
= newi
->get_dirfrag(frag_t());
4946 dir
->fnode
.version
--;
4947 dir
->mark_dirty(dir
->fnode
.version
+ 1, mdr
->ls
);
4948 dir
->mark_new(mdr
->ls
);
4953 MDRequestRef null_ref
;
4954 get_mds()->mdcache
->send_dentry_link(dn
, null_ref
);
4956 if (newi
->inode
.is_file())
4957 get_mds()->locker
->share_inode_max_size(newi
);
4960 get_mds()->balancer
->hit_inode(mdr
->get_mds_stamp(), newi
, META_POP_IWR
);
4963 server
->respond_to_request(mdr
, 0);
4968 void Server::handle_client_mknod(MDRequestRef
& mdr
)
4970 MClientRequest
*req
= mdr
->client_request
;
4971 client_t client
= mdr
->get_client();
4972 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4973 file_layout_t
*dir_layout
= NULL
;
4974 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, false, false, false,
4977 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4978 respond_to_request(mdr
, -EROFS
);
4981 CInode
*diri
= dn
->get_dir()->get_inode();
4982 rdlocks
.insert(&diri
->authlock
);
4983 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4986 if (!check_access(mdr
, diri
, MAY_WRITE
))
4989 if (!check_fragment_space(mdr
, dn
->get_dir()))
4992 unsigned mode
= req
->head
.args
.mknod
.mode
;
4993 if ((mode
& S_IFMT
) == 0)
4997 file_layout_t layout
;
4998 if (dir_layout
&& S_ISREG(mode
))
4999 layout
= *dir_layout
;
5001 layout
= mdcache
->default_file_layout
;
5003 SnapRealm
*realm
= dn
->get_dir()->inode
->find_snaprealm();
5004 snapid_t follows
= realm
->get_newest_seq();
5005 CInode
*newi
= prepare_new_inode(mdr
, dn
->get_dir(), inodeno_t(req
->head
.ino
),
5009 dn
->push_projected_linkage(newi
);
5011 newi
->inode
.rdev
= req
->head
.args
.mknod
.rdev
;
5012 newi
->inode
.version
= dn
->pre_dirty();
5013 newi
->inode
.rstat
.rfiles
= 1;
5014 if (layout
.pool_id
!= mdcache
->default_file_layout
.pool_id
)
5015 newi
->inode
.add_old_pool(mdcache
->default_file_layout
.pool_id
);
5016 newi
->inode
.update_backtrace();
5018 // if the client created a _regular_ file via MKNOD, it's highly likely they'll
5019 // want to write to it (e.g., if they are reexporting NFS)
5020 if (S_ISREG(newi
->inode
.mode
)) {
5021 dout(15) << " setting a client_range too, since this is a regular file" << dendl
;
5022 newi
->inode
.client_ranges
[client
].range
.first
= 0;
5023 newi
->inode
.client_ranges
[client
].range
.last
= newi
->inode
.get_layout_size_increment();
5024 newi
->inode
.client_ranges
[client
].follows
= follows
;
5026 // issue a cap on the file
5027 int cmode
= CEPH_FILE_MODE_RDWR
;
5028 Capability
*cap
= mds
->locker
->issue_new_caps(newi
, cmode
, mdr
->session
, realm
, req
->is_replay());
5032 // put locks in excl mode
5033 newi
->filelock
.set_state(LOCK_EXCL
);
5034 newi
->authlock
.set_state(LOCK_EXCL
);
5035 newi
->xattrlock
.set_state(LOCK_EXCL
);
5039 assert(dn
->first
== follows
+ 1);
5040 newi
->first
= dn
->first
;
5042 dout(10) << "mknod mode " << newi
->inode
.mode
<< " rdev " << newi
->inode
.rdev
<< dendl
;
5045 mdr
->ls
= mdlog
->get_current_segment();
5046 EUpdate
*le
= new EUpdate(mdlog
, "mknod");
5047 mdlog
->start_entry(le
);
5048 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
5049 journal_allocated_inos(mdr
, &le
->metablob
);
5051 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, newi
, dn
->get_dir(),
5052 PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
5053 le
->metablob
.add_primary_dentry(dn
, newi
, true, true, true);
5055 journal_and_reply(mdr
, newi
, dn
, le
, new C_MDS_mknod_finish(this, mdr
, dn
, newi
));
5061 /* This function takes responsibility for the passed mdr*/
5062 void Server::handle_client_mkdir(MDRequestRef
& mdr
)
5064 MClientRequest
*req
= mdr
->client_request
;
5065 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
5066 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, false, false, false);
5068 if (mdr
->snapid
!= CEPH_NOSNAP
) {
5069 respond_to_request(mdr
, -EROFS
);
5072 CDir
*dir
= dn
->get_dir();
5073 CInode
*diri
= dir
->get_inode();
5074 rdlocks
.insert(&diri
->authlock
);
5075 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
5078 // mkdir check access
5079 if (!check_access(mdr
, diri
, MAY_WRITE
))
5082 if (!check_fragment_space(mdr
, dir
))
5086 SnapRealm
*realm
= dn
->get_dir()->inode
->find_snaprealm();
5087 snapid_t follows
= realm
->get_newest_seq();
5089 unsigned mode
= req
->head
.args
.mkdir
.mode
;
5092 CInode
*newi
= prepare_new_inode(mdr
, dn
->get_dir(), inodeno_t(req
->head
.ino
), mode
);
5095 // it's a directory.
5096 dn
->push_projected_linkage(newi
);
5098 newi
->inode
.version
= dn
->pre_dirty();
5099 newi
->inode
.rstat
.rsubdirs
= 1;
5100 newi
->inode
.update_backtrace();
5102 dout(12) << " follows " << follows
<< dendl
;
5103 assert(dn
->first
== follows
+ 1);
5104 newi
->first
= dn
->first
;
5106 // ...and that new dir is empty.
5107 CDir
*newdir
= newi
->get_or_open_dirfrag(mdcache
, frag_t());
5108 newdir
->state_set(CDir::STATE_CREATING
);
5109 newdir
->mark_complete();
5110 newdir
->fnode
.version
= newdir
->pre_dirty();
5113 mdr
->ls
= mdlog
->get_current_segment();
5114 EUpdate
*le
= new EUpdate(mdlog
, "mkdir");
5115 mdlog
->start_entry(le
);
5116 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
5117 journal_allocated_inos(mdr
, &le
->metablob
);
5118 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, newi
, dn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
5119 le
->metablob
.add_primary_dentry(dn
, newi
, true, true);
5120 le
->metablob
.add_new_dir(newdir
); // dirty AND complete AND new
5122 // issue a cap on the directory
5123 int cmode
= CEPH_FILE_MODE_RDWR
;
5124 Capability
*cap
= mds
->locker
->issue_new_caps(newi
, cmode
, mdr
->session
, realm
, req
->is_replay());
5128 // put locks in excl mode
5129 newi
->filelock
.set_state(LOCK_EXCL
);
5130 newi
->authlock
.set_state(LOCK_EXCL
);
5131 newi
->xattrlock
.set_state(LOCK_EXCL
);
5134 // make sure this inode gets into the journal
5135 le
->metablob
.add_opened_ino(newi
->ino());
5136 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
5137 ls
->open_files
.push_back(&newi
->item_open_file
);
5139 journal_and_reply(mdr
, newi
, dn
, le
, new C_MDS_mknod_finish(this, mdr
, dn
, newi
));
5145 void Server::handle_client_symlink(MDRequestRef
& mdr
)
5147 MClientRequest
*req
= mdr
->client_request
;
5148 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
5149 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, false, false, false);
5151 if (mdr
->snapid
!= CEPH_NOSNAP
) {
5152 respond_to_request(mdr
, -EROFS
);
5155 CDir
*dir
= dn
->get_dir();
5156 CInode
*diri
= dir
->get_inode();
5157 rdlocks
.insert(&diri
->authlock
);
5158 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
5161 if (!check_access(mdr
, diri
, MAY_WRITE
))
5164 if (!check_fragment_space(mdr
, dir
))
5167 unsigned mode
= S_IFLNK
| 0777;
5168 CInode
*newi
= prepare_new_inode(mdr
, dn
->get_dir(), inodeno_t(req
->head
.ino
), mode
);
5172 dn
->push_projected_linkage(newi
);
5174 newi
->symlink
= req
->get_path2();
5175 newi
->inode
.size
= newi
->symlink
.length();
5176 newi
->inode
.rstat
.rbytes
= newi
->inode
.size
;
5177 newi
->inode
.rstat
.rfiles
= 1;
5178 newi
->inode
.version
= dn
->pre_dirty();
5179 newi
->inode
.update_backtrace();
5181 newi
->first
= dn
->first
;
5184 mdr
->ls
= mdlog
->get_current_segment();
5185 EUpdate
*le
= new EUpdate(mdlog
, "symlink");
5186 mdlog
->start_entry(le
);
5187 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
5188 journal_allocated_inos(mdr
, &le
->metablob
);
5189 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, newi
, dn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
5190 le
->metablob
.add_primary_dentry(dn
, newi
, true, true);
5192 journal_and_reply(mdr
, newi
, dn
, le
, new C_MDS_mknod_finish(this, mdr
, dn
, newi
));
5201 void Server::handle_client_link(MDRequestRef
& mdr
)
5203 MClientRequest
*req
= mdr
->client_request
;
5205 dout(7) << "handle_client_link " << req
->get_filepath()
5206 << " to " << req
->get_filepath2()
5209 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
5211 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, false, false, false);
5213 CInode
*targeti
= rdlock_path_pin_ref(mdr
, 1, rdlocks
, false);
5214 if (!targeti
) return;
5215 if (mdr
->snapid
!= CEPH_NOSNAP
) {
5216 respond_to_request(mdr
, -EROFS
);
5220 CDir
*dir
= dn
->get_dir();
5221 dout(7) << "handle_client_link link " << dn
->get_name() << " in " << *dir
<< dendl
;
5222 dout(7) << "target is " << *targeti
<< dendl
;
5223 if (targeti
->is_dir()) {
5224 // if srcdn is replica, need to make sure its linkage is correct
5225 vector
<CDentry
*>& trace
= mdr
->dn
[1];
5226 if (trace
.empty() ||
5227 trace
.back()->is_auth() ||
5228 trace
.back()->lock
.can_read(mdr
->get_client())) {
5229 dout(7) << "target is a dir, failing..." << dendl
;
5230 respond_to_request(mdr
, -EINVAL
);
5235 xlocks
.insert(&targeti
->linklock
);
5237 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
5240 if ((!mdr
->has_more() || mdr
->more()->witnessed
.empty())) {
5241 if (!check_access(mdr
, targeti
, MAY_WRITE
))
5244 if (!check_access(mdr
, dir
->get_inode(), MAY_WRITE
))
5247 if (!check_fragment_space(mdr
, dir
))
5252 assert(g_conf
->mds_kill_link_at
!= 1);
5255 if (targeti
->is_auth())
5256 _link_local(mdr
, dn
, targeti
);
5258 _link_remote(mdr
, true, dn
, targeti
);
5262 class C_MDS_link_local_finish
: public ServerLogContext
{
5268 C_MDS_link_local_finish(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CInode
*ti
,
5269 version_t dnpv_
, version_t tipv_
) :
5270 ServerLogContext(s
, r
), dn(d
), targeti(ti
),
5271 dnpv(dnpv_
), tipv(tipv_
) { }
5272 void finish(int r
) override
{
5274 server
->_link_local_finish(mdr
, dn
, targeti
, dnpv
, tipv
);
5279 void Server::_link_local(MDRequestRef
& mdr
, CDentry
*dn
, CInode
*targeti
)
5281 dout(10) << "_link_local " << *dn
<< " to " << *targeti
<< dendl
;
5283 mdr
->ls
= mdlog
->get_current_segment();
5285 // predirty NEW dentry
5286 version_t dnpv
= dn
->pre_dirty();
5287 version_t tipv
= targeti
->pre_dirty();
5289 // project inode update
5290 inode_t
*pi
= targeti
->project_inode();
5292 pi
->ctime
= mdr
->get_op_stamp();
5297 EUpdate
*le
= new EUpdate(mdlog
, "link_local");
5298 mdlog
->start_entry(le
);
5299 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
5300 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, targeti
, dn
->get_dir(), PREDIRTY_DIR
, 1); // new dn
5301 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, targeti
, 0, PREDIRTY_PRIMARY
); // targeti
5302 le
->metablob
.add_remote_dentry(dn
, true, targeti
->ino(), targeti
->d_type()); // new remote
5303 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, targeti
);
5305 // do this after predirty_*, to avoid funky extra dnl arg
5306 dn
->push_projected_linkage(targeti
->ino(), targeti
->d_type());
5308 journal_and_reply(mdr
, targeti
, dn
, le
, new C_MDS_link_local_finish(this, mdr
, dn
, targeti
, dnpv
, tipv
));
5311 void Server::_link_local_finish(MDRequestRef
& mdr
, CDentry
*dn
, CInode
*targeti
,
5312 version_t dnpv
, version_t tipv
)
5314 dout(10) << "_link_local_finish " << *dn
<< " to " << *targeti
<< dendl
;
5316 // link and unlock the NEW dentry
5317 CDentry::linkage_t
*dnl
= dn
->pop_projected_linkage();
5318 if (!dnl
->get_inode())
5319 dn
->link_remote(dnl
, targeti
);
5320 dn
->mark_dirty(dnpv
, mdr
->ls
);
5323 targeti
->pop_and_dirty_projected_inode(mdr
->ls
);
5327 MDRequestRef null_ref
;
5328 mdcache
->send_dentry_link(dn
, null_ref
);
5330 // bump target popularity
5331 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), targeti
, META_POP_IWR
);
5332 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), dn
->get_dir(), META_POP_IWR
);
5335 respond_to_request(mdr
, 0);
5339 // link / unlink remote
5341 class C_MDS_link_remote_finish
: public ServerLogContext
{
5347 C_MDS_link_remote_finish(Server
*s
, MDRequestRef
& r
, bool i
, CDentry
*d
, CInode
*ti
) :
5348 ServerLogContext(s
, r
), inc(i
), dn(d
), targeti(ti
),
5349 dpv(d
->get_projected_version()) {}
5350 void finish(int r
) override
{
5352 server
->_link_remote_finish(mdr
, inc
, dn
, targeti
, dpv
);
5356 void Server::_link_remote(MDRequestRef
& mdr
, bool inc
, CDentry
*dn
, CInode
*targeti
)
5358 dout(10) << "_link_remote "
5359 << (inc
? "link ":"unlink ")
5360 << *dn
<< " to " << *targeti
<< dendl
;
5362 // 1. send LinkPrepare to dest (journal nlink++ prepare)
5363 mds_rank_t linkauth
= targeti
->authority().first
;
5364 if (mdr
->more()->witnessed
.count(linkauth
) == 0) {
5365 if (mds
->is_cluster_degraded() &&
5366 !mds
->mdsmap
->is_clientreplay_or_active_or_stopping(linkauth
)) {
5367 dout(10) << " targeti auth mds." << linkauth
<< " is not active" << dendl
;
5368 if (mdr
->more()->waiting_on_slave
.empty())
5369 mds
->wait_for_active_peer(linkauth
, new C_MDS_RetryRequest(mdcache
, mdr
));
5373 dout(10) << " targeti auth must prepare nlink++/--" << dendl
;
5376 op
= MMDSSlaveRequest::OP_LINKPREP
;
5378 op
= MMDSSlaveRequest::OP_UNLINKPREP
;
5379 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, op
);
5380 targeti
->set_object_info(req
->get_object_info());
5381 req
->op_stamp
= mdr
->get_op_stamp();
5382 mds
->send_message_mds(req
, linkauth
);
5384 assert(mdr
->more()->waiting_on_slave
.count(linkauth
) == 0);
5385 mdr
->more()->waiting_on_slave
.insert(linkauth
);
5388 dout(10) << " targeti auth has prepared nlink++/--" << dendl
;
5390 assert(g_conf
->mds_kill_link_at
!= 2);
5392 mdr
->set_mds_stamp(ceph_clock_now());
5395 mdr
->ls
= mdlog
->get_current_segment();
5396 EUpdate
*le
= new EUpdate(mdlog
, inc
? "link_remote":"unlink_remote");
5397 mdlog
->start_entry(le
);
5398 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
5399 if (!mdr
->more()->witnessed
.empty()) {
5400 dout(20) << " noting uncommitted_slaves " << mdr
->more()->witnessed
<< dendl
;
5401 le
->reqid
= mdr
->reqid
;
5402 le
->had_slaves
= true;
5403 mdcache
->add_uncommitted_master(mdr
->reqid
, mdr
->ls
, mdr
->more()->witnessed
);
5408 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, targeti
, dn
->get_dir(), PREDIRTY_DIR
, 1);
5409 le
->metablob
.add_remote_dentry(dn
, true, targeti
->ino(), targeti
->d_type()); // new remote
5410 dn
->push_projected_linkage(targeti
->ino(), targeti
->d_type());
5413 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, targeti
, dn
->get_dir(), PREDIRTY_DIR
, -1);
5414 mdcache
->journal_cow_dentry(mdr
.get(), &le
->metablob
, dn
);
5415 le
->metablob
.add_null_dentry(dn
, true);
5416 dn
->push_projected_linkage();
5419 journal_and_reply(mdr
, targeti
, dn
, le
, new C_MDS_link_remote_finish(this, mdr
, inc
, dn
, targeti
));
5422 void Server::_link_remote_finish(MDRequestRef
& mdr
, bool inc
,
5423 CDentry
*dn
, CInode
*targeti
,
5426 dout(10) << "_link_remote_finish "
5427 << (inc
? "link ":"unlink ")
5428 << *dn
<< " to " << *targeti
<< dendl
;
5430 assert(g_conf
->mds_kill_link_at
!= 3);
5432 if (!mdr
->more()->witnessed
.empty())
5433 mdcache
->logged_master_update(mdr
->reqid
);
5436 // link the new dentry
5437 CDentry::linkage_t
*dnl
= dn
->pop_projected_linkage();
5438 if (!dnl
->get_inode())
5439 dn
->link_remote(dnl
, targeti
);
5440 dn
->mark_dirty(dpv
, mdr
->ls
);
5442 // unlink main dentry
5443 dn
->get_dir()->unlink_inode(dn
);
5444 dn
->pop_projected_linkage();
5445 dn
->mark_dirty(dn
->get_projected_version(), mdr
->ls
); // dirty old dentry
5450 MDRequestRef null_ref
;
5452 mdcache
->send_dentry_link(dn
, null_ref
);
5454 mdcache
->send_dentry_unlink(dn
, NULL
, null_ref
);
5456 // bump target popularity
5457 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), targeti
, META_POP_IWR
);
5458 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), dn
->get_dir(), META_POP_IWR
);
5461 respond_to_request(mdr
, 0);
5464 // removing a new dn?
5465 dn
->get_dir()->try_remove_unlinked_dn(dn
);
5469 // remote linking/unlinking
5471 class C_MDS_SlaveLinkPrep
: public ServerLogContext
{
5474 C_MDS_SlaveLinkPrep(Server
*s
, MDRequestRef
& r
, CInode
*t
) :
5475 ServerLogContext(s
, r
), targeti(t
) { }
5476 void finish(int r
) override
{
5478 server
->_logged_slave_link(mdr
, targeti
);
5482 class C_MDS_SlaveLinkCommit
: public ServerContext
{
5486 C_MDS_SlaveLinkCommit(Server
*s
, MDRequestRef
& r
, CInode
*t
) :
5487 ServerContext(s
), mdr(r
), targeti(t
) { }
5488 void finish(int r
) override
{
5489 server
->_commit_slave_link(mdr
, r
, targeti
);
5493 /* This function DOES put the mdr->slave_request before returning*/
5494 void Server::handle_slave_link_prep(MDRequestRef
& mdr
)
5496 dout(10) << "handle_slave_link_prep " << *mdr
5497 << " on " << mdr
->slave_request
->get_object_info()
5500 assert(g_conf
->mds_kill_link_at
!= 4);
5502 CInode
*targeti
= mdcache
->get_inode(mdr
->slave_request
->get_object_info().ino
);
5504 dout(10) << "targeti " << *targeti
<< dendl
;
5505 CDentry
*dn
= targeti
->get_parent_dn();
5506 CDentry::linkage_t
*dnl
= dn
->get_linkage();
5507 assert(dnl
->is_primary());
5509 mdr
->set_op_stamp(mdr
->slave_request
->op_stamp
);
5511 mdr
->auth_pin(targeti
);
5513 //ceph_abort(); // test hack: make sure master can handle a slave that fails to prepare...
5514 assert(g_conf
->mds_kill_link_at
!= 5);
5517 mdr
->ls
= mdlog
->get_current_segment();
5518 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_link_prep", mdr
->reqid
, mdr
->slave_to_mds
,
5519 ESlaveUpdate::OP_PREPARE
, ESlaveUpdate::LINK
);
5520 mdlog
->start_entry(le
);
5522 inode_t
*pi
= dnl
->get_inode()->project_inode();
5524 // update journaled target inode
5526 if (mdr
->slave_request
->get_op() == MMDSSlaveRequest::OP_LINKPREP
) {
5534 link_rollback rollback
;
5535 rollback
.reqid
= mdr
->reqid
;
5536 rollback
.ino
= targeti
->ino();
5537 rollback
.old_ctime
= targeti
->inode
.ctime
; // we hold versionlock xlock; no concorrent projections
5538 const fnode_t
*pf
= targeti
->get_parent_dn()->get_dir()->get_projected_fnode();
5539 rollback
.old_dir_mtime
= pf
->fragstat
.mtime
;
5540 rollback
.old_dir_rctime
= pf
->rstat
.rctime
;
5541 rollback
.was_inc
= inc
;
5542 ::encode(rollback
, le
->rollback
);
5543 mdr
->more()->rollback_bl
= le
->rollback
;
5545 pi
->ctime
= mdr
->get_op_stamp();
5546 pi
->version
= targeti
->pre_dirty();
5548 dout(10) << " projected inode " << pi
<< " v " << pi
->version
<< dendl
;
5551 mdcache
->predirty_journal_parents(mdr
, &le
->commit
, dnl
->get_inode(), 0, PREDIRTY_SHALLOW
|PREDIRTY_PRIMARY
);
5552 mdcache
->journal_dirty_inode(mdr
.get(), &le
->commit
, targeti
);
5554 // set up commit waiter
5555 mdr
->more()->slave_commit
= new C_MDS_SlaveLinkCommit(this, mdr
, targeti
);
5557 mdr
->more()->slave_update_journaled
= true;
5558 submit_mdlog_entry(le
, new C_MDS_SlaveLinkPrep(this, mdr
, targeti
),
5563 void Server::_logged_slave_link(MDRequestRef
& mdr
, CInode
*targeti
)
5565 dout(10) << "_logged_slave_link " << *mdr
5566 << " " << *targeti
<< dendl
;
5568 assert(g_conf
->mds_kill_link_at
!= 6);
5570 // update the target
5571 targeti
->pop_and_dirty_projected_inode(mdr
->ls
);
5575 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), targeti
, META_POP_IWR
);
5578 mdr
->slave_request
->put();
5579 mdr
->slave_request
= 0;
5582 if (!mdr
->aborted
) {
5583 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
5584 MMDSSlaveRequest::OP_LINKPREPACK
);
5585 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
5587 dout(10) << " abort flag set, finishing" << dendl
;
5588 mdcache
->request_finish(mdr
);
5593 struct C_MDS_CommittedSlave
: public ServerLogContext
{
5594 C_MDS_CommittedSlave(Server
*s
, MDRequestRef
& m
) : ServerLogContext(s
, m
) {}
5595 void finish(int r
) override
{
5596 server
->_committed_slave(mdr
);
5600 void Server::_commit_slave_link(MDRequestRef
& mdr
, int r
, CInode
*targeti
)
5602 dout(10) << "_commit_slave_link " << *mdr
5604 << " " << *targeti
<< dendl
;
5606 assert(g_conf
->mds_kill_link_at
!= 7);
5609 // drop our pins, etc.
5612 // write a commit to the journal
5613 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_link_commit", mdr
->reqid
, mdr
->slave_to_mds
,
5614 ESlaveUpdate::OP_COMMIT
, ESlaveUpdate::LINK
);
5615 mdlog
->start_entry(le
);
5616 submit_mdlog_entry(le
, new C_MDS_CommittedSlave(this, mdr
), mdr
, __func__
);
5619 do_link_rollback(mdr
->more()->rollback_bl
, mdr
->slave_to_mds
, mdr
);
5623 void Server::_committed_slave(MDRequestRef
& mdr
)
5625 dout(10) << "_committed_slave " << *mdr
<< dendl
;
5627 assert(g_conf
->mds_kill_link_at
!= 8);
5629 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
5630 MMDSSlaveRequest::OP_COMMITTED
);
5631 mds
->send_message_mds(req
, mdr
->slave_to_mds
);
5632 mdcache
->request_finish(mdr
);
5635 struct C_MDS_LoggedLinkRollback
: public ServerLogContext
{
5637 C_MDS_LoggedLinkRollback(Server
*s
, MutationRef
& m
, MDRequestRef
& r
) : ServerLogContext(s
, r
), mut(m
) {}
5638 void finish(int r
) override
{
5639 server
->_link_rollback_finish(mut
, mdr
);
5643 void Server::do_link_rollback(bufferlist
&rbl
, mds_rank_t master
, MDRequestRef
& mdr
)
5645 link_rollback rollback
;
5646 bufferlist::iterator p
= rbl
.begin();
5647 ::decode(rollback
, p
);
5649 dout(10) << "do_link_rollback on " << rollback
.reqid
5650 << (rollback
.was_inc
? " inc":" dec")
5651 << " ino " << rollback
.ino
5654 assert(g_conf
->mds_kill_link_at
!= 9);
5656 mdcache
->add_rollback(rollback
.reqid
, master
); // need to finish this update before resolve finishes
5657 assert(mdr
|| mds
->is_resolve());
5659 MutationRef
mut(new MutationImpl(nullptr, utime_t(), rollback
.reqid
));
5660 mut
->ls
= mds
->mdlog
->get_current_segment();
5662 CInode
*in
= mdcache
->get_inode(rollback
.ino
);
5664 dout(10) << " target is " << *in
<< dendl
;
5665 assert(!in
->is_projected()); // live slave request hold versionlock xlock.
5667 inode_t
*pi
= in
->project_inode();
5668 pi
->version
= in
->pre_dirty();
5669 mut
->add_projected_inode(in
);
5671 // parent dir rctime
5672 CDir
*parent
= in
->get_projected_parent_dn()->get_dir();
5673 fnode_t
*pf
= parent
->project_fnode();
5674 mut
->add_projected_fnode(parent
);
5675 pf
->version
= parent
->pre_dirty();
5676 if (pf
->fragstat
.mtime
== pi
->ctime
) {
5677 pf
->fragstat
.mtime
= rollback
.old_dir_mtime
;
5678 if (pf
->rstat
.rctime
== pi
->ctime
)
5679 pf
->rstat
.rctime
= rollback
.old_dir_rctime
;
5680 mut
->add_updated_lock(&parent
->get_inode()->filelock
);
5681 mut
->add_updated_lock(&parent
->get_inode()->nestlock
);
5685 pi
->ctime
= rollback
.old_ctime
;
5686 if (rollback
.was_inc
)
5692 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_link_rollback", rollback
.reqid
, master
,
5693 ESlaveUpdate::OP_ROLLBACK
, ESlaveUpdate::LINK
);
5694 mdlog
->start_entry(le
);
5695 le
->commit
.add_dir_context(parent
);
5696 le
->commit
.add_dir(parent
, true);
5697 le
->commit
.add_primary_dentry(in
->get_projected_parent_dn(), 0, true);
5699 submit_mdlog_entry(le
, new C_MDS_LoggedLinkRollback(this, mut
, mdr
),
5704 void Server::_link_rollback_finish(MutationRef
& mut
, MDRequestRef
& mdr
)
5706 dout(10) << "_link_rollback_finish" << dendl
;
5708 assert(g_conf
->mds_kill_link_at
!= 10);
5712 mdcache
->request_finish(mdr
);
5714 mdcache
->finish_rollback(mut
->reqid
);
5720 /* This function DOES NOT put the passed message before returning*/
5721 void Server::handle_slave_link_prep_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*m
)
5723 dout(10) << "handle_slave_link_prep_ack " << *mdr
5724 << " " << *m
<< dendl
;
5725 mds_rank_t from
= mds_rank_t(m
->get_source().num());
5727 assert(g_conf
->mds_kill_link_at
!= 11);
5730 mdr
->more()->slaves
.insert(from
);
5733 assert(mdr
->more()->witnessed
.count(from
) == 0);
5734 mdr
->more()->witnessed
.insert(from
);
5735 assert(!m
->is_not_journaled());
5736 mdr
->more()->has_journaled_slaves
= true;
5738 // remove from waiting list
5739 assert(mdr
->more()->waiting_on_slave
.count(from
));
5740 mdr
->more()->waiting_on_slave
.erase(from
);
5742 assert(mdr
->more()->waiting_on_slave
.empty());
5744 dispatch_client_request(mdr
); // go again!
5753 void Server::handle_client_unlink(MDRequestRef
& mdr
)
5755 MClientRequest
*req
= mdr
->client_request
;
5756 client_t client
= mdr
->get_client();
5760 if (req
->get_op() == CEPH_MDS_OP_RMDIR
) rmdir
= true;
5762 if (req
->get_filepath().depth() == 0) {
5763 respond_to_request(mdr
, -EINVAL
);
5768 vector
<CDentry
*> trace
;
5770 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, req
->get_filepath(), &trace
, &in
, MDS_TRAVERSE_FORWARD
);
5774 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
5775 mdcache
->find_ino_peers(req
->get_filepath().get_ino(), new C_MDS_TryFindInode(this, mdr
));
5778 respond_to_request(mdr
, r
);
5781 if (mdr
->snapid
!= CEPH_NOSNAP
) {
5782 respond_to_request(mdr
, -EROFS
);
5786 CDentry
*dn
= trace
[trace
.size()-1];
5788 if (!dn
->is_auth()) {
5789 mdcache
->request_forward(mdr
, dn
->authority().first
);
5793 CInode
*diri
= dn
->get_dir()->get_inode();
5795 CDentry::linkage_t
*dnl
= dn
->get_linkage(client
, mdr
);
5796 assert(!dnl
->is_null());
5799 dout(7) << "handle_client_rmdir on " << *dn
<< dendl
;
5801 dout(7) << "handle_client_unlink on " << *dn
<< dendl
;
5803 dout(7) << "dn links to " << *in
<< dendl
;
5808 // do empty directory checks
5809 if (_dir_is_nonempty_unlocked(mdr
, in
)) {
5810 respond_to_request(mdr
, -ENOTEMPTY
);
5814 dout(7) << "handle_client_unlink on dir " << *in
<< ", returning error" << dendl
;
5815 respond_to_request(mdr
, -EISDIR
);
5821 dout(7) << "handle_client_rmdir on non-dir " << *in
<< ", returning error" << dendl
;
5822 respond_to_request(mdr
, -ENOTDIR
);
5827 // -- create stray dentry? --
5828 CDentry
*straydn
= NULL
;
5829 if (dnl
->is_primary()) {
5830 straydn
= prepare_stray_dentry(mdr
, dnl
->get_inode());
5833 dout(10) << " straydn is " << *straydn
<< dendl
;
5834 } else if (mdr
->straydn
) {
5835 mdr
->unpin(mdr
->straydn
);
5836 mdr
->straydn
= NULL
;
5840 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
5842 for (int i
=0; i
<(int)trace
.size()-1; i
++)
5843 rdlocks
.insert(&trace
[i
]->lock
);
5844 xlocks
.insert(&dn
->lock
);
5845 wrlocks
.insert(&diri
->filelock
);
5846 wrlocks
.insert(&diri
->nestlock
);
5847 xlocks
.insert(&in
->linklock
);
5849 wrlocks
.insert(&straydn
->get_dir()->inode
->filelock
);
5850 wrlocks
.insert(&straydn
->get_dir()->inode
->nestlock
);
5851 xlocks
.insert(&straydn
->lock
);
5854 rdlocks
.insert(&in
->filelock
); // to verify it's empty
5855 mds
->locker
->include_snap_rdlocks(rdlocks
, dnl
->get_inode());
5857 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
5861 _dir_is_nonempty(mdr
, in
)) {
5862 respond_to_request(mdr
, -ENOTEMPTY
);
5866 if ((!mdr
->has_more() || mdr
->more()->witnessed
.empty())) {
5867 if (!check_access(mdr
, diri
, MAY_WRITE
))
5872 if (in
->is_dir() && in
->has_subtree_root_dirfrag()) {
5873 // subtree root auths need to be witnesses
5874 set
<mds_rank_t
> witnesses
;
5875 in
->list_replicas(witnesses
);
5876 dout(10) << " witnesses " << witnesses
<< ", have " << mdr
->more()->witnessed
<< dendl
;
5878 for (set
<mds_rank_t
>::iterator p
= witnesses
.begin();
5879 p
!= witnesses
.end();
5881 if (mdr
->more()->witnessed
.count(*p
)) {
5882 dout(10) << " already witnessed by mds." << *p
<< dendl
;
5883 } else if (mdr
->more()->waiting_on_slave
.count(*p
)) {
5884 dout(10) << " already waiting on witness mds." << *p
<< dendl
;
5886 if (!_rmdir_prepare_witness(mdr
, *p
, trace
, straydn
))
5890 if (!mdr
->more()->waiting_on_slave
.empty())
5891 return; // we're waiting for a witness.
5895 if (dnl
->is_remote() && !dnl
->get_inode()->is_auth())
5896 _link_remote(mdr
, false, dn
, dnl
->get_inode());
5898 _unlink_local(mdr
, dn
, straydn
);
5901 class C_MDS_unlink_local_finish
: public ServerLogContext
{
5904 version_t dnpv
; // deleted dentry
5906 C_MDS_unlink_local_finish(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CDentry
*sd
) :
5907 ServerLogContext(s
, r
), dn(d
), straydn(sd
),
5908 dnpv(d
->get_projected_version()) {}
5909 void finish(int r
) override
{
5911 server
->_unlink_local_finish(mdr
, dn
, straydn
, dnpv
);
5915 void Server::_unlink_local(MDRequestRef
& mdr
, CDentry
*dn
, CDentry
*straydn
)
5917 dout(10) << "_unlink_local " << *dn
<< dendl
;
5919 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
5920 CInode
*in
= dnl
->get_inode();
5922 SnapRealm
*realm
= in
->find_snaprealm();
5923 snapid_t follows
= realm
->get_newest_seq();
5926 mdr
->ls
= mdlog
->get_current_segment();
5928 // prepare log entry
5929 EUpdate
*le
= new EUpdate(mdlog
, "unlink_local");
5930 mdlog
->start_entry(le
);
5931 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
5932 if (!mdr
->more()->witnessed
.empty()) {
5933 dout(20) << " noting uncommitted_slaves " << mdr
->more()->witnessed
<< dendl
;
5934 le
->reqid
= mdr
->reqid
;
5935 le
->had_slaves
= true;
5936 mdcache
->add_uncommitted_master(mdr
->reqid
, mdr
->ls
, mdr
->more()->witnessed
);
5940 assert(dnl
->is_primary());
5941 straydn
->push_projected_linkage(in
);
5942 straydn
->first
= follows
+ 1;
5945 // the unlinked dentry
5948 inode_t
*pi
= in
->project_inode();
5949 dn
->make_path_string(pi
->stray_prior_path
, true);
5950 mdr
->add_projected_inode(in
); // do this _after_ my dn->pre_dirty().. we apply that one manually.
5951 pi
->version
= in
->pre_dirty();
5952 pi
->ctime
= mdr
->get_op_stamp();
5956 in
->state_set(CInode::STATE_ORPHAN
);
5958 if (dnl
->is_primary()) {
5959 // primary link. add stray dentry.
5961 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, dn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, -1);
5962 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, straydn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
5964 // project snaprealm, too
5965 if (in
->snaprealm
|| follows
+ 1 > in
->get_oldest_snap())
5966 in
->project_past_snaprealm_parent(straydn
->get_dir()->inode
->find_snaprealm());
5968 pi
->update_backtrace();
5969 le
->metablob
.add_primary_dentry(straydn
, in
, true, true);
5971 // remote link. update remote inode.
5972 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, dn
->get_dir(), PREDIRTY_DIR
, -1);
5973 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, 0, PREDIRTY_PRIMARY
);
5974 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, in
);
5977 mdcache
->journal_cow_dentry(mdr
.get(), &le
->metablob
, dn
);
5978 le
->metablob
.add_null_dentry(dn
, true);
5981 dout(10) << " noting renamed (unlinked) dir ino " << in
->ino() << " in metablob" << dendl
;
5982 le
->metablob
.renamed_dirino
= in
->ino();
5985 dn
->push_projected_linkage();
5989 mdcache
->project_subtree_rename(in
, dn
->get_dir(), straydn
->get_dir());
5992 journal_and_reply(mdr
, 0, dn
, le
, new C_MDS_unlink_local_finish(this, mdr
, dn
, straydn
));
5995 void Server::_unlink_local_finish(MDRequestRef
& mdr
,
5996 CDentry
*dn
, CDentry
*straydn
,
5999 dout(10) << "_unlink_local_finish " << *dn
<< dendl
;
6001 if (!mdr
->more()->witnessed
.empty())
6002 mdcache
->logged_master_update(mdr
->reqid
);
6004 // unlink main dentry
6005 dn
->get_dir()->unlink_inode(dn
);
6006 dn
->pop_projected_linkage();
6008 // relink as stray? (i.e. was primary link?)
6009 CInode
*strayin
= NULL
;
6010 bool snap_is_new
= false;
6012 dout(20) << " straydn is " << *straydn
<< dendl
;
6013 CDentry::linkage_t
*straydnl
= straydn
->pop_projected_linkage();
6014 strayin
= straydnl
->get_inode();
6016 snap_is_new
= strayin
->snaprealm
? true : false;
6017 mdcache
->touch_dentry_bottom(straydn
);
6020 dn
->mark_dirty(dnpv
, mdr
->ls
);
6023 if (snap_is_new
) //only new if strayin exists
6024 mdcache
->do_realm_invalidate_and_update_notify(strayin
, CEPH_SNAP_OP_SPLIT
, true);
6026 mdcache
->send_dentry_unlink(dn
, straydn
, mdr
);
6028 // update subtree map?
6029 if (straydn
&& strayin
->is_dir())
6030 mdcache
->adjust_subtree_after_rename(strayin
, dn
->get_dir(), true);
6033 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), dn
->get_dir(), META_POP_IWR
);
6036 respond_to_request(mdr
, 0);
6038 // removing a new dn?
6039 dn
->get_dir()->try_remove_unlinked_dn(dn
);
6042 // respond_to_request() drops locks. So stray reintegration can race with us.
6043 if (straydn
&& !straydn
->get_projected_linkage()->is_null()) {
6044 // Tip off the MDCache that this dentry is a stray that
6045 // might be elegible for purge.
6046 mdcache
->notify_stray(straydn
);
6050 bool Server::_rmdir_prepare_witness(MDRequestRef
& mdr
, mds_rank_t who
, vector
<CDentry
*>& trace
, CDentry
*straydn
)
6052 if (mds
->is_cluster_degraded() &&
6053 !mds
->mdsmap
->is_clientreplay_or_active_or_stopping(who
)) {
6054 dout(10) << "_rmdir_prepare_witness mds." << who
<< " is not active" << dendl
;
6055 if (mdr
->more()->waiting_on_slave
.empty())
6056 mds
->wait_for_active_peer(who
, new C_MDS_RetryRequest(mdcache
, mdr
));
6060 dout(10) << "_rmdir_prepare_witness mds." << who
<< dendl
;
6061 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
6062 MMDSSlaveRequest::OP_RMDIRPREP
);
6063 req
->srcdnpath
= filepath(trace
.front()->get_dir()->ino());
6064 for (auto dn
: trace
)
6065 req
->srcdnpath
.push_dentry(dn
->name
);
6066 mdcache
->replicate_stray(straydn
, who
, req
->stray
);
6068 req
->op_stamp
= mdr
->get_op_stamp();
6069 mds
->send_message_mds(req
, who
);
6071 assert(mdr
->more()->waiting_on_slave
.count(who
) == 0);
6072 mdr
->more()->waiting_on_slave
.insert(who
);
6076 struct C_MDS_SlaveRmdirPrep
: public ServerLogContext
{
6077 CDentry
*dn
, *straydn
;
6078 C_MDS_SlaveRmdirPrep(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CDentry
*st
)
6079 : ServerLogContext(s
, r
), dn(d
), straydn(st
) {}
6080 void finish(int r
) override
{
6081 server
->_logged_slave_rmdir(mdr
, dn
, straydn
);
6085 struct C_MDS_SlaveRmdirCommit
: public ServerContext
{
6088 C_MDS_SlaveRmdirCommit(Server
*s
, MDRequestRef
& r
, CDentry
*sd
)
6089 : ServerContext(s
), mdr(r
), straydn(sd
) { }
6090 void finish(int r
) override
{
6091 server
->_commit_slave_rmdir(mdr
, r
, straydn
);
6095 void Server::handle_slave_rmdir_prep(MDRequestRef
& mdr
)
6097 dout(10) << "handle_slave_rmdir_prep " << *mdr
6098 << " " << mdr
->slave_request
->srcdnpath
6099 << " to " << mdr
->slave_request
->destdnpath
6102 vector
<CDentry
*> trace
;
6103 filepath
srcpath(mdr
->slave_request
->srcdnpath
);
6104 dout(10) << " src " << srcpath
<< dendl
;
6106 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, srcpath
, &trace
, &in
, MDS_TRAVERSE_DISCOVERXLOCK
);
6109 mdcache
->find_ino_peers(srcpath
.get_ino(), new C_MDS_RetryRequest(mdcache
, mdr
),
6114 CDentry
*dn
= trace
[trace
.size()-1];
6115 dout(10) << " dn " << *dn
<< dendl
;
6118 assert(mdr
->straydn
);
6119 CDentry
*straydn
= mdr
->straydn
;
6120 dout(10) << " straydn " << *straydn
<< dendl
;
6122 mdr
->set_op_stamp(mdr
->slave_request
->op_stamp
);
6124 rmdir_rollback rollback
;
6125 rollback
.reqid
= mdr
->reqid
;
6126 rollback
.src_dir
= dn
->get_dir()->dirfrag();
6127 rollback
.src_dname
= dn
->name
;
6128 rollback
.dest_dir
= straydn
->get_dir()->dirfrag();
6129 rollback
.dest_dname
= straydn
->name
;
6130 ::encode(rollback
, mdr
->more()->rollback_bl
);
6131 dout(20) << " rollback is " << mdr
->more()->rollback_bl
.length() << " bytes" << dendl
;
6133 // set up commit waiter
6134 mdr
->more()->slave_commit
= new C_MDS_SlaveRmdirCommit(this, mdr
, straydn
);
6136 if (!in
->has_subtree_root_dirfrag(mds
->get_nodeid())) {
6137 dout(10) << " no auth subtree in " << *in
<< ", skipping journal" << dendl
;
6138 dn
->get_dir()->unlink_inode(dn
);
6139 straydn
->get_dir()->link_primary_inode(straydn
, in
);
6141 assert(straydn
->first
>= in
->first
);
6142 in
->first
= straydn
->first
;
6144 mdcache
->adjust_subtree_after_rename(in
, dn
->get_dir(), false);
6146 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
6147 MMDSSlaveRequest::OP_RMDIRPREPACK
);
6148 reply
->mark_not_journaled();
6149 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
6151 // send caps to auth (if we're not already)
6152 if (in
->is_any_caps() && !in
->state_test(CInode::STATE_EXPORTINGCAPS
))
6153 mdcache
->migrator
->export_caps(in
);
6155 mdcache
->touch_dentry_bottom(straydn
); // move stray to end of lru
6157 mdr
->slave_request
->put();
6158 mdr
->slave_request
= 0;
6163 straydn
->push_projected_linkage(in
);
6164 dn
->push_projected_linkage();
6166 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rmdir", mdr
->reqid
, mdr
->slave_to_mds
,
6167 ESlaveUpdate::OP_PREPARE
, ESlaveUpdate::RMDIR
);
6168 mdlog
->start_entry(le
);
6169 le
->rollback
= mdr
->more()->rollback_bl
;
6171 le
->commit
.add_dir_context(straydn
->get_dir());
6172 le
->commit
.add_primary_dentry(straydn
, in
, true);
6173 // slave: no need to journal original dentry
6175 dout(10) << " noting renamed (unlinked) dir ino " << in
->ino() << " in metablob" << dendl
;
6176 le
->commit
.renamed_dirino
= in
->ino();
6178 mdcache
->project_subtree_rename(in
, dn
->get_dir(), straydn
->get_dir());
6180 mdr
->more()->slave_update_journaled
= true;
6181 submit_mdlog_entry(le
, new C_MDS_SlaveRmdirPrep(this, mdr
, dn
, straydn
),
6186 void Server::_logged_slave_rmdir(MDRequestRef
& mdr
, CDentry
*dn
, CDentry
*straydn
)
6188 dout(10) << "_logged_slave_rmdir " << *mdr
<< " on " << *dn
<< dendl
;
6190 // update our cache now, so we are consistent with what is in the journal
6191 // when we journal a subtree map
6192 CInode
*in
= dn
->get_linkage()->get_inode();
6193 dn
->get_dir()->unlink_inode(dn
);
6194 straydn
->pop_projected_linkage();
6195 dn
->pop_projected_linkage();
6196 mdcache
->adjust_subtree_after_rename(in
, dn
->get_dir(), true);
6199 mdr
->slave_request
->put();
6200 mdr
->slave_request
= 0;
6203 if (!mdr
->aborted
) {
6204 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
6205 MMDSSlaveRequest::OP_RMDIRPREPACK
);
6206 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
6208 dout(10) << " abort flag set, finishing" << dendl
;
6209 mdcache
->request_finish(mdr
);
6213 void Server::handle_slave_rmdir_prep_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*ack
)
6215 dout(10) << "handle_slave_rmdir_prep_ack " << *mdr
6216 << " " << *ack
<< dendl
;
6218 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
6220 mdr
->more()->slaves
.insert(from
);
6221 mdr
->more()->witnessed
.insert(from
);
6222 if (!ack
->is_not_journaled())
6223 mdr
->more()->has_journaled_slaves
= true;
6225 // remove from waiting list
6226 assert(mdr
->more()->waiting_on_slave
.count(from
));
6227 mdr
->more()->waiting_on_slave
.erase(from
);
6229 if (mdr
->more()->waiting_on_slave
.empty())
6230 dispatch_client_request(mdr
); // go again!
6232 dout(10) << "still waiting on slaves " << mdr
->more()->waiting_on_slave
<< dendl
;
6235 void Server::_commit_slave_rmdir(MDRequestRef
& mdr
, int r
, CDentry
*straydn
)
6237 dout(10) << "_commit_slave_rmdir " << *mdr
<< " r=" << r
<< dendl
;
6240 if (mdr
->more()->slave_update_journaled
) {
6241 CInode
*strayin
= straydn
->get_projected_linkage()->get_inode();
6242 if (strayin
&& !strayin
->snaprealm
)
6243 mdcache
->clear_dirty_bits_for_stray(strayin
);
6248 if (mdr
->more()->slave_update_journaled
) {
6249 // write a commit to the journal
6250 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rmdir_commit", mdr
->reqid
,
6251 mdr
->slave_to_mds
, ESlaveUpdate::OP_COMMIT
,
6252 ESlaveUpdate::RMDIR
);
6253 mdlog
->start_entry(le
);
6254 submit_mdlog_entry(le
, new C_MDS_CommittedSlave(this, mdr
), mdr
, __func__
);
6257 _committed_slave(mdr
);
6261 do_rmdir_rollback(mdr
->more()->rollback_bl
, mdr
->slave_to_mds
, mdr
);
6265 struct C_MDS_LoggedRmdirRollback
: public ServerLogContext
{
6269 C_MDS_LoggedRmdirRollback(Server
*s
, MDRequestRef
& m
, metareqid_t mr
, CDentry
*d
, CDentry
*st
)
6270 : ServerLogContext(s
, m
), reqid(mr
), dn(d
), straydn(st
) {}
6271 void finish(int r
) override
{
6272 server
->_rmdir_rollback_finish(mdr
, reqid
, dn
, straydn
);
6276 void Server::do_rmdir_rollback(bufferlist
&rbl
, mds_rank_t master
, MDRequestRef
& mdr
)
6278 // unlink the other rollback methods, the rmdir rollback is only
6279 // needed to record the subtree changes in the journal for inode
6280 // replicas who are auth for empty dirfrags. no actual changes to
6281 // the file system are taking place here, so there is no Mutation.
6283 rmdir_rollback rollback
;
6284 bufferlist::iterator p
= rbl
.begin();
6285 ::decode(rollback
, p
);
6287 dout(10) << "do_rmdir_rollback on " << rollback
.reqid
<< dendl
;
6288 mdcache
->add_rollback(rollback
.reqid
, master
); // need to finish this update before resolve finishes
6289 assert(mdr
|| mds
->is_resolve());
6291 CDir
*dir
= mdcache
->get_dirfrag(rollback
.src_dir
);
6293 dir
= mdcache
->get_dirfrag(rollback
.src_dir
.ino
, rollback
.src_dname
);
6295 CDentry
*dn
= dir
->lookup(rollback
.src_dname
);
6297 dout(10) << " dn " << *dn
<< dendl
;
6298 dir
= mdcache
->get_dirfrag(rollback
.dest_dir
);
6300 CDentry
*straydn
= dir
->lookup(rollback
.dest_dname
);
6302 dout(10) << " straydn " << *dn
<< dendl
;
6303 CInode
*in
= straydn
->get_linkage()->get_inode();
6305 if (mdr
&& !mdr
->more()->slave_update_journaled
) {
6306 assert(!in
->has_subtree_root_dirfrag(mds
->get_nodeid()));
6308 straydn
->get_dir()->unlink_inode(straydn
);
6309 dn
->get_dir()->link_primary_inode(dn
, in
);
6311 mdcache
->adjust_subtree_after_rename(in
, straydn
->get_dir(), false);
6313 mdcache
->request_finish(mdr
);
6314 mdcache
->finish_rollback(rollback
.reqid
);
6318 dn
->push_projected_linkage(in
);
6319 straydn
->push_projected_linkage();
6321 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rmdir_rollback", rollback
.reqid
, master
,
6322 ESlaveUpdate::OP_ROLLBACK
, ESlaveUpdate::RMDIR
);
6323 mdlog
->start_entry(le
);
6325 le
->commit
.add_dir_context(dn
->get_dir());
6326 le
->commit
.add_primary_dentry(dn
, in
, true);
6327 // slave: no need to journal straydn
6329 dout(10) << " noting renamed (unlinked) dir ino " << in
->ino() << " in metablob" << dendl
;
6330 le
->commit
.renamed_dirino
= in
->ino();
6332 mdcache
->project_subtree_rename(in
, straydn
->get_dir(), dn
->get_dir());
6334 submit_mdlog_entry(le
,
6335 new C_MDS_LoggedRmdirRollback(this, mdr
,rollback
.reqid
,
6341 void Server::_rmdir_rollback_finish(MDRequestRef
& mdr
, metareqid_t reqid
, CDentry
*dn
, CDentry
*straydn
)
6343 dout(10) << "_rmdir_rollback_finish " << reqid
<< dendl
;
6345 straydn
->get_dir()->unlink_inode(straydn
);
6346 dn
->pop_projected_linkage();
6347 straydn
->pop_projected_linkage();
6349 CInode
*in
= dn
->get_linkage()->get_inode();
6350 mdcache
->adjust_subtree_after_rename(in
, straydn
->get_dir(), true);
6351 if (mds
->is_resolve()) {
6352 CDir
*root
= mdcache
->get_subtree_root(straydn
->get_dir());
6353 mdcache
->try_trim_non_auth_subtree(root
);
6357 mdcache
->request_finish(mdr
);
6359 mdcache
->finish_rollback(reqid
);
6363 /** _dir_is_nonempty[_unlocked]
6365 * check if a directory is non-empty (i.e. we can rmdir it).
6367 * the unlocked varient this is a fastpath check. we can't really be
6368 * sure until we rdlock the filelock.
6370 bool Server::_dir_is_nonempty_unlocked(MDRequestRef
& mdr
, CInode
*in
)
6372 dout(10) << "dir_is_nonempty_unlocked " << *in
<< dendl
;
6373 assert(in
->is_auth());
6375 if (in
->snaprealm
&& in
->snaprealm
->srnode
.snaps
.size())
6376 return true; // in a snapshot!
6379 in
->get_dirfrags(ls
);
6380 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6382 // is the frag obviously non-empty?
6383 if (dir
->is_auth()) {
6384 if (dir
->get_projected_fnode()->fragstat
.size()) {
6385 dout(10) << "dir_is_nonempty_unlocked dirstat has "
6386 << dir
->get_projected_fnode()->fragstat
.size() << " items " << *dir
<< dendl
;
6395 bool Server::_dir_is_nonempty(MDRequestRef
& mdr
, CInode
*in
)
6397 dout(10) << "dir_is_nonempty " << *in
<< dendl
;
6398 assert(in
->is_auth());
6399 assert(in
->filelock
.can_read(mdr
->get_client()));
6401 frag_info_t dirstat
;
6402 version_t dirstat_version
= in
->get_projected_inode()->dirstat
.version
;
6405 in
->get_dirfrags(ls
);
6406 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6408 const fnode_t
*pf
= dir
->get_projected_fnode();
6409 if (pf
->fragstat
.size()) {
6410 dout(10) << "dir_is_nonempty dirstat has "
6411 << pf
->fragstat
.size() << " items " << *dir
<< dendl
;
6415 if (pf
->accounted_fragstat
.version
== dirstat_version
)
6416 dirstat
.add(pf
->accounted_fragstat
);
6418 dirstat
.add(pf
->fragstat
);
6421 return dirstat
.size() != in
->get_projected_inode()->dirstat
.size();
6425 // ======================================================
6428 class C_MDS_rename_finish
: public ServerLogContext
{
6433 C_MDS_rename_finish(Server
*s
, MDRequestRef
& r
,
6434 CDentry
*sdn
, CDentry
*ddn
, CDentry
*stdn
) :
6435 ServerLogContext(s
, r
),
6436 srcdn(sdn
), destdn(ddn
), straydn(stdn
) { }
6437 void finish(int r
) override
{
6439 server
->_rename_finish(mdr
, srcdn
, destdn
, straydn
);
6444 /** handle_client_rename
6446 * rename master is the destdn auth. this is because cached inodes
6447 * must remain connected. thus, any replica of srci, must also
6448 * replicate destdn, and possibly straydn, so that srci (and
6449 * destdn->inode) remain connected during the rename.
6451 * to do this, we freeze srci, then master (destdn auth) verifies that
6452 * all other nodes have also replciated destdn and straydn. note that
6453 * destdn replicas need not also replicate srci. this only works when
6456 * This function takes responsibility for the passed mdr.
6458 void Server::handle_client_rename(MDRequestRef
& mdr
)
6460 MClientRequest
*req
= mdr
->client_request
;
6461 dout(7) << "handle_client_rename " << *req
<< dendl
;
6463 filepath destpath
= req
->get_filepath();
6464 filepath srcpath
= req
->get_filepath2();
6465 if (destpath
.depth() == 0 || srcpath
.depth() == 0) {
6466 respond_to_request(mdr
, -EINVAL
);
6469 const string
&destname
= destpath
.last_dentry();
6471 vector
<CDentry
*>& srctrace
= mdr
->dn
[1];
6472 vector
<CDentry
*>& desttrace
= mdr
->dn
[0];
6474 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
6476 CDentry
*destdn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, true, false, true);
6477 if (!destdn
) return;
6478 dout(10) << " destdn " << *destdn
<< dendl
;
6479 if (mdr
->snapid
!= CEPH_NOSNAP
) {
6480 respond_to_request(mdr
, -EROFS
);
6483 CDentry::linkage_t
*destdnl
= destdn
->get_projected_linkage();
6484 CDir
*destdir
= destdn
->get_dir();
6485 assert(destdir
->is_auth());
6487 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, srcpath
, &srctrace
, NULL
, MDS_TRAVERSE_DISCOVER
);
6492 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
6493 mdcache
->find_ino_peers(srcpath
.get_ino(), new C_MDS_TryFindInode(this, mdr
));
6495 dout(10) << "FAIL on error " << r
<< dendl
;
6496 respond_to_request(mdr
, r
);
6501 assert(!srctrace
.empty());
6502 CDentry
*srcdn
= srctrace
[srctrace
.size()-1];
6503 dout(10) << " srcdn " << *srcdn
<< dendl
;
6504 if (srcdn
->last
!= CEPH_NOSNAP
) {
6505 respond_to_request(mdr
, -EROFS
);
6508 CDentry::linkage_t
*srcdnl
= srcdn
->get_projected_linkage();
6509 CInode
*srci
= srcdnl
->get_inode();
6510 dout(10) << " srci " << *srci
<< dendl
;
6513 if (!destdnl
->is_null()) {
6514 //dout(10) << "dest dn exists " << *destdn << dendl;
6515 oldin
= mdcache
->get_dentry_inode(destdn
, mdr
, true);
6517 dout(10) << " oldin " << *oldin
<< dendl
;
6519 // non-empty dir? do trivial fast unlocked check, do another check later with read locks
6520 if (oldin
->is_dir() && _dir_is_nonempty_unlocked(mdr
, oldin
)) {
6521 respond_to_request(mdr
, -ENOTEMPTY
);
6525 // if srcdn is replica, need to make sure its linkage is correct
6526 if (srcdn
->is_auth() ||
6527 srcdn
->lock
.can_read(mdr
->get_client()) ||
6528 (srcdn
->lock
.is_xlocked() && srcdn
->lock
.get_xlock_by() == mdr
)) {
6529 // mv /some/thing /to/some/existing_other_thing
6530 if (oldin
->is_dir() && !srci
->is_dir()) {
6531 respond_to_request(mdr
, -EISDIR
);
6534 if (!oldin
->is_dir() && srci
->is_dir()) {
6535 respond_to_request(mdr
, -ENOTDIR
);
6538 if (srci
== oldin
&& !srcdn
->get_dir()->inode
->is_stray()) {
6539 respond_to_request(mdr
, 0); // no-op. POSIX makes no sense.
6545 // -- some sanity checks --
6547 // src+dest traces _must_ share a common ancestor for locking to prevent orphans
6548 if (destpath
.get_ino() != srcpath
.get_ino() &&
6549 !(req
->get_source().is_mds() &&
6550 MDS_INO_IS_MDSDIR(srcpath
.get_ino()))) { // <-- mds 'rename' out of stray dir is ok!
6551 CInode
*srcbase
= srctrace
[0]->get_dir()->get_inode();
6552 CInode
*destbase
= desttrace
[0]->get_dir()->get_inode();
6553 // ok, extend srctrace toward root until it is an ancestor of desttrace.
6554 while (srcbase
!= destbase
&&
6555 !srcbase
->is_projected_ancestor_of(destbase
)) {
6556 CDentry
*pdn
= srcbase
->get_projected_parent_dn();
6557 srctrace
.insert(srctrace
.begin(), pdn
);
6558 dout(10) << "rename prepending srctrace with " << *pdn
<< dendl
;
6559 srcbase
= pdn
->get_dir()->get_inode();
6562 // then, extend destpath until it shares the same parent inode as srcpath.
6563 while (destbase
!= srcbase
) {
6564 CDentry
*pdn
= destbase
->get_projected_parent_dn();
6565 desttrace
.insert(desttrace
.begin(), pdn
);
6566 rdlocks
.insert(&pdn
->lock
);
6567 dout(10) << "rename prepending desttrace with " << *pdn
<< dendl
;
6568 destbase
= pdn
->get_dir()->get_inode();
6570 dout(10) << "rename src and dest traces now share common ancestor " << *destbase
<< dendl
;
6574 if (srcdn
->get_dir() == destdir
&& srcdn
->name
== destname
) {
6575 dout(7) << "rename src=dest, noop" << dendl
;
6576 respond_to_request(mdr
, 0);
6580 // dest a child of src?
6581 // e.g. mv /usr /usr/foo
6582 CDentry
*pdn
= destdir
->inode
->get_projected_parent_dn();
6585 dout(7) << "cannot rename item to be a child of itself" << dendl
;
6586 respond_to_request(mdr
, -EINVAL
);
6589 pdn
= pdn
->get_dir()->inode
->parent
;
6592 // is this a stray migration, reintegration or merge? (sanity checks!)
6593 if (mdr
->reqid
.name
.is_mds() &&
6594 !(MDS_INO_IS_MDSDIR(srcpath
.get_ino()) &&
6595 MDS_INO_IS_MDSDIR(destpath
.get_ino())) &&
6596 !(destdnl
->is_remote() &&
6597 destdnl
->get_remote_ino() == srci
->ino())) {
6598 respond_to_request(mdr
, -EINVAL
); // actually, this won't reply, but whatev.
6602 bool linkmerge
= (srcdnl
->get_inode() == destdnl
->get_inode() &&
6603 (srcdnl
->is_primary() || destdnl
->is_primary()));
6605 dout(10) << " this is a link merge" << dendl
;
6607 // -- create stray dentry? --
6608 CDentry
*straydn
= NULL
;
6609 if (destdnl
->is_primary() && !linkmerge
) {
6610 straydn
= prepare_stray_dentry(mdr
, destdnl
->get_inode());
6613 dout(10) << " straydn is " << *straydn
<< dendl
;
6614 } else if (mdr
->straydn
) {
6615 mdr
->unpin(mdr
->straydn
);
6616 mdr
->straydn
= NULL
;
6619 // -- prepare witness list --
6621 * NOTE: we use _all_ replicas as witnesses.
6622 * this probably isn't totally necessary (esp for file renames),
6623 * but if/when we change that, we have to make sure rejoin is
6624 * sufficiently robust to handle strong rejoins from survivors
6625 * with totally wrong dentry->inode linkage.
6626 * (currently, it can ignore rename effects, because the resolve
6627 * stage will sort them out.)
6629 set
<mds_rank_t
> witnesses
= mdr
->more()->extra_witnesses
;
6630 if (srcdn
->is_auth())
6631 srcdn
->list_replicas(witnesses
);
6633 witnesses
.insert(srcdn
->authority().first
);
6634 if (srcdnl
->is_remote() && !srci
->is_auth())
6635 witnesses
.insert(srci
->authority().first
);
6636 destdn
->list_replicas(witnesses
);
6637 if (destdnl
->is_remote() && !oldin
->is_auth())
6638 witnesses
.insert(oldin
->authority().first
);
6639 dout(10) << " witnesses " << witnesses
<< ", have " << mdr
->more()->witnessed
<< dendl
;
6643 map
<SimpleLock
*, mds_rank_t
> remote_wrlocks
;
6645 // srctrace items. this mirrors locks taken in rdlock_path_xlock_dentry
6646 for (int i
=0; i
<(int)srctrace
.size(); i
++)
6647 rdlocks
.insert(&srctrace
[i
]->lock
);
6648 xlocks
.insert(&srcdn
->lock
);
6649 mds_rank_t srcdirauth
= srcdn
->get_dir()->authority().first
;
6650 if (srcdirauth
!= mds
->get_nodeid()) {
6651 dout(10) << " will remote_wrlock srcdir scatterlocks on mds." << srcdirauth
<< dendl
;
6652 remote_wrlocks
[&srcdn
->get_dir()->inode
->filelock
] = srcdirauth
;
6653 remote_wrlocks
[&srcdn
->get_dir()->inode
->nestlock
] = srcdirauth
;
6655 rdlocks
.insert(&srci
->dirfragtreelock
);
6657 wrlocks
.insert(&srcdn
->get_dir()->inode
->filelock
);
6658 wrlocks
.insert(&srcdn
->get_dir()->inode
->nestlock
);
6660 mds
->locker
->include_snap_rdlocks(rdlocks
, srcdn
->get_dir()->inode
);
6664 wrlocks
.insert(&straydn
->get_dir()->inode
->filelock
);
6665 wrlocks
.insert(&straydn
->get_dir()->inode
->nestlock
);
6666 xlocks
.insert(&straydn
->lock
);
6669 // xlock versionlock on dentries if there are witnesses.
6670 // replicas can't see projected dentry linkages, and will get
6671 // confused if we try to pipeline things.
6672 if (!witnesses
.empty()) {
6673 // take xlock on all projected ancestor dentries for srcdn and destdn.
6674 // this ensures the srcdn and destdn can be traversed to by the witnesses.
6675 for (int i
= 0; i
<(int)srctrace
.size(); i
++) {
6676 if (srctrace
[i
]->is_auth() && srctrace
[i
]->is_projected())
6677 xlocks
.insert(&srctrace
[i
]->versionlock
);
6679 for (int i
=0; i
<(int)desttrace
.size(); i
++) {
6680 if (desttrace
[i
]->is_auth() && desttrace
[i
]->is_projected())
6681 xlocks
.insert(&desttrace
[i
]->versionlock
);
6683 // xlock srci and oldin's primary dentries, so witnesses can call
6684 // open_remote_ino() with 'want_locked=true' when the srcdn or destdn
6686 if (srcdnl
->is_remote())
6687 xlocks
.insert(&srci
->get_projected_parent_dn()->lock
);
6688 if (destdnl
->is_remote())
6689 xlocks
.insert(&oldin
->get_projected_parent_dn()->lock
);
6692 // we need to update srci's ctime. xlock its least contended lock to do that...
6693 xlocks
.insert(&srci
->linklock
);
6695 // xlock oldin (for nlink--)
6697 xlocks
.insert(&oldin
->linklock
);
6698 if (oldin
->is_dir())
6699 rdlocks
.insert(&oldin
->filelock
);
6701 if (srcdnl
->is_primary() && srci
->is_dir())
6702 // FIXME: this should happen whenever we are renamning between
6703 // realms, regardless of the file type
6704 // FIXME: If/when this changes, make sure to update the
6705 // "allowance" in handle_slave_rename_prep
6706 xlocks
.insert(&srci
->snaplock
); // FIXME: an auth bcast could be sufficient?
6708 rdlocks
.insert(&srci
->snaplock
);
6710 CInode
*auth_pin_freeze
= !srcdn
->is_auth() && srcdnl
->is_primary() ? srci
: NULL
;
6711 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
,
6712 &remote_wrlocks
, auth_pin_freeze
))
6715 if ((!mdr
->has_more() || mdr
->more()->witnessed
.empty())) {
6716 if (!check_access(mdr
, srcdn
->get_dir()->get_inode(), MAY_WRITE
))
6719 if (!check_access(mdr
, destdn
->get_dir()->get_inode(), MAY_WRITE
))
6722 if (!check_fragment_space(mdr
, destdn
->get_dir()))
6725 if (!check_access(mdr
, srci
, MAY_WRITE
))
6729 // with read lock, really verify oldin is empty
6732 _dir_is_nonempty(mdr
, oldin
)) {
6733 respond_to_request(mdr
, -ENOTEMPTY
);
6737 /* project_past_snaprealm_parent() will do this job
6739 // moving between snaprealms?
6740 if (srcdnl->is_primary() && srci->is_multiversion() && !srci->snaprealm) {
6741 SnapRealm *srcrealm = srci->find_snaprealm();
6742 SnapRealm *destrealm = destdn->get_dir()->inode->find_snaprealm();
6743 if (srcrealm != destrealm &&
6744 (srcrealm->get_newest_seq() + 1 > srcdn->first ||
6745 destrealm->get_newest_seq() + 1 > srcdn->first)) {
6746 dout(10) << " renaming between snaprealms, creating snaprealm for " << *srci << dendl;
6747 mdcache->snaprealm_create(mdr, srci);
6753 assert(g_conf
->mds_kill_rename_at
!= 1);
6755 // -- open all srcdn inode frags, if any --
6756 // we need these open so that auth can properly delegate from inode to dirfrags
6757 // after the inode is _ours_.
6758 if (srcdnl
->is_primary() &&
6759 !srcdn
->is_auth() &&
6761 dout(10) << "srci is remote dir, setting stickydirs and opening all frags" << dendl
;
6762 mdr
->set_stickydirs(srci
);
6765 srci
->dirfragtree
.get_leaves(frags
);
6766 for (list
<frag_t
>::iterator p
= frags
.begin();
6769 CDir
*dir
= srci
->get_dirfrag(*p
);
6771 dout(10) << " opening " << *p
<< " under " << *srci
<< dendl
;
6772 mdcache
->open_remote_dirfrag(srci
, *p
, new C_MDS_RetryRequest(mdcache
, mdr
));
6778 // -- prepare witnesses --
6780 // do srcdn auth last
6781 mds_rank_t last
= MDS_RANK_NONE
;
6782 if (!srcdn
->is_auth()) {
6783 last
= srcdn
->authority().first
;
6784 mdr
->more()->srcdn_auth_mds
= last
;
6785 // ask auth of srci to mark srci as ambiguous auth if more than two MDS
6786 // are involved in the rename operation.
6787 if (srcdnl
->is_primary() && !mdr
->more()->is_ambiguous_auth
) {
6788 dout(10) << " preparing ambiguous auth for srci" << dendl
;
6789 assert(mdr
->more()->is_remote_frozen_authpin
);
6790 assert(mdr
->more()->rename_inode
== srci
);
6791 _rename_prepare_witness(mdr
, last
, witnesses
, srctrace
, desttrace
, straydn
);
6796 for (set
<mds_rank_t
>::iterator p
= witnesses
.begin();
6797 p
!= witnesses
.end();
6799 if (*p
== last
) continue; // do it last!
6800 if (mdr
->more()->witnessed
.count(*p
)) {
6801 dout(10) << " already witnessed by mds." << *p
<< dendl
;
6802 } else if (mdr
->more()->waiting_on_slave
.count(*p
)) {
6803 dout(10) << " already waiting on witness mds." << *p
<< dendl
;
6805 if (!_rename_prepare_witness(mdr
, *p
, witnesses
, srctrace
, desttrace
, straydn
))
6809 if (!mdr
->more()->waiting_on_slave
.empty())
6810 return; // we're waiting for a witness.
6812 if (last
!= MDS_RANK_NONE
&& mdr
->more()->witnessed
.count(last
) == 0) {
6813 dout(10) << " preparing last witness (srcdn auth)" << dendl
;
6814 assert(mdr
->more()->waiting_on_slave
.count(last
) == 0);
6815 _rename_prepare_witness(mdr
, last
, witnesses
, srctrace
, desttrace
, straydn
);
6819 // test hack: bail after slave does prepare, so we can verify it's _live_ rollback.
6820 if (!mdr
->more()->slaves
.empty() && !srci
->is_dir())
6821 assert(g_conf
->mds_kill_rename_at
!= 3);
6822 if (!mdr
->more()->slaves
.empty() && srci
->is_dir())
6823 assert(g_conf
->mds_kill_rename_at
!= 4);
6825 // -- declare now --
6826 mdr
->set_mds_stamp(ceph_clock_now());
6828 // -- prepare journal entry --
6829 mdr
->ls
= mdlog
->get_current_segment();
6830 EUpdate
*le
= new EUpdate(mdlog
, "rename");
6831 mdlog
->start_entry(le
);
6832 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
6833 if (!mdr
->more()->witnessed
.empty()) {
6834 dout(20) << " noting uncommitted_slaves " << mdr
->more()->witnessed
<< dendl
;
6836 le
->reqid
= mdr
->reqid
;
6837 le
->had_slaves
= true;
6839 mdcache
->add_uncommitted_master(mdr
->reqid
, mdr
->ls
, mdr
->more()->witnessed
);
6840 // no need to send frozen auth pin to recovring auth MDS of srci
6841 mdr
->more()->is_remote_frozen_authpin
= false;
6844 _rename_prepare(mdr
, &le
->metablob
, &le
->client_map
, srcdn
, destdn
, straydn
);
6845 if (le
->client_map
.length())
6846 le
->cmapv
= mds
->sessionmap
.get_projected();
6848 // -- commit locally --
6849 C_MDS_rename_finish
*fin
= new C_MDS_rename_finish(this, mdr
, srcdn
, destdn
, straydn
);
6851 journal_and_reply(mdr
, srci
, destdn
, le
, fin
);
6855 void Server::_rename_finish(MDRequestRef
& mdr
, CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
6857 dout(10) << "_rename_finish " << *mdr
<< dendl
;
6859 if (!mdr
->more()->witnessed
.empty())
6860 mdcache
->logged_master_update(mdr
->reqid
);
6863 _rename_apply(mdr
, srcdn
, destdn
, straydn
);
6865 mdcache
->send_dentry_link(destdn
, mdr
);
6867 CDentry::linkage_t
*destdnl
= destdn
->get_linkage();
6868 CInode
*in
= destdnl
->get_inode();
6869 bool need_eval
= mdr
->more()->cap_imports
.count(in
);
6871 // test hack: test slave commit
6872 if (!mdr
->more()->slaves
.empty() && !in
->is_dir())
6873 assert(g_conf
->mds_kill_rename_at
!= 5);
6874 if (!mdr
->more()->slaves
.empty() && in
->is_dir())
6875 assert(g_conf
->mds_kill_rename_at
!= 6);
6878 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), srcdn
->get_dir(), META_POP_IWR
);
6879 if (destdnl
->is_remote() && in
->is_auth())
6880 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), in
, META_POP_IWR
);
6882 // did we import srci? if so, explicitly ack that import that, before we unlock and reply.
6884 assert(g_conf
->mds_kill_rename_at
!= 7);
6887 respond_to_request(mdr
, 0);
6890 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
, true);
6893 // respond_to_request() drops locks. So stray reintegration can race with us.
6894 if (straydn
&& !straydn
->get_projected_linkage()->is_null()) {
6895 mdcache
->notify_stray(straydn
);
6903 bool Server::_rename_prepare_witness(MDRequestRef
& mdr
, mds_rank_t who
, set
<mds_rank_t
> &witnesse
,
6904 vector
<CDentry
*>& srctrace
, vector
<CDentry
*>& dsttrace
, CDentry
*straydn
)
6906 if (mds
->is_cluster_degraded() &&
6907 !mds
->mdsmap
->is_clientreplay_or_active_or_stopping(who
)) {
6908 dout(10) << "_rename_prepare_witness mds." << who
<< " is not active" << dendl
;
6909 if (mdr
->more()->waiting_on_slave
.empty())
6910 mds
->wait_for_active_peer(who
, new C_MDS_RetryRequest(mdcache
, mdr
));
6914 dout(10) << "_rename_prepare_witness mds." << who
<< dendl
;
6915 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
6916 MMDSSlaveRequest::OP_RENAMEPREP
);
6918 req
->srcdnpath
= filepath(srctrace
.front()->get_dir()->ino());
6919 for (auto dn
: srctrace
)
6920 req
->srcdnpath
.push_dentry(dn
->name
);
6921 req
->destdnpath
= filepath(dsttrace
.front()->get_dir()->ino());
6922 for (auto dn
: dsttrace
)
6923 req
->destdnpath
.push_dentry(dn
->name
);
6925 mdcache
->replicate_stray(straydn
, who
, req
->stray
);
6927 req
->srcdn_auth
= mdr
->more()->srcdn_auth_mds
;
6929 // srcdn auth will verify our current witness list is sufficient
6930 req
->witnesses
= witnesse
;
6932 req
->op_stamp
= mdr
->get_op_stamp();
6933 mds
->send_message_mds(req
, who
);
6935 assert(mdr
->more()->waiting_on_slave
.count(who
) == 0);
6936 mdr
->more()->waiting_on_slave
.insert(who
);
6940 version_t
Server::_rename_prepare_import(MDRequestRef
& mdr
, CDentry
*srcdn
, bufferlist
*client_map_bl
)
6942 version_t oldpv
= mdr
->more()->inode_import_v
;
6944 CDentry::linkage_t
*srcdnl
= srcdn
->get_linkage();
6947 bufferlist::iterator blp
= mdr
->more()->inode_import
.begin();
6950 ::decode(mdr
->more()->imported_client_map
, blp
);
6951 ::encode(mdr
->more()->imported_client_map
, *client_map_bl
,
6952 mds
->mdsmap
->get_up_features());
6953 prepare_force_open_sessions(mdr
->more()->imported_client_map
, mdr
->more()->sseq_map
);
6955 list
<ScatterLock
*> updated_scatterlocks
;
6956 mdcache
->migrator
->decode_import_inode(srcdn
, blp
, srcdn
->authority().first
, mdr
->ls
,
6957 mdr
->more()->cap_imports
, updated_scatterlocks
);
6959 // hack: force back to !auth and clean, temporarily
6960 srcdnl
->get_inode()->state_clear(CInode::STATE_AUTH
);
6961 srcdnl
->get_inode()->mark_clean();
6966 bool Server::_need_force_journal(CInode
*diri
, bool empty
)
6969 diri
->get_dirfrags(ls
);
6971 bool force_journal
= false;
6973 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6974 if ((*p
)->is_subtree_root() && (*p
)->get_dir_auth().first
== mds
->get_nodeid()) {
6975 dout(10) << " frag " << (*p
)->get_frag() << " is auth subtree dirfrag, will force journal" << dendl
;
6976 force_journal
= true;
6979 dout(20) << " frag " << (*p
)->get_frag() << " is not auth subtree dirfrag" << dendl
;
6982 // see if any children of our frags are auth subtrees.
6983 list
<CDir
*> subtrees
;
6984 mdcache
->list_subtrees(subtrees
);
6985 dout(10) << " subtrees " << subtrees
<< " frags " << ls
<< dendl
;
6986 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6988 for (list
<CDir
*>::iterator q
= subtrees
.begin(); q
!= subtrees
.end(); ++q
) {
6989 if (dir
->contains(*q
)) {
6990 if ((*q
)->get_dir_auth().first
== mds
->get_nodeid()) {
6991 dout(10) << " frag " << (*p
)->get_frag() << " contains (maybe) auth subtree, will force journal "
6993 force_journal
= true;
6996 dout(20) << " frag " << (*p
)->get_frag() << " contains but isn't auth for " << **q
<< dendl
;
6998 dout(20) << " frag " << (*p
)->get_frag() << " does not contain " << **q
<< dendl
;
7004 return force_journal
;
7007 void Server::_rename_prepare(MDRequestRef
& mdr
,
7008 EMetaBlob
*metablob
, bufferlist
*client_map_bl
,
7009 CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
7011 dout(10) << "_rename_prepare " << *mdr
<< " " << *srcdn
<< " " << *destdn
<< dendl
;
7013 dout(10) << " straydn " << *straydn
<< dendl
;
7015 CDentry::linkage_t
*srcdnl
= srcdn
->get_projected_linkage();
7016 CDentry::linkage_t
*destdnl
= destdn
->get_projected_linkage();
7017 CInode
*srci
= srcdnl
->get_inode();
7018 CInode
*oldin
= destdnl
->get_inode();
7020 // primary+remote link merge?
7021 bool linkmerge
= (srci
== destdnl
->get_inode() &&
7022 (srcdnl
->is_primary() || destdnl
->is_primary()));
7023 bool silent
= srcdn
->get_dir()->inode
->is_stray();
7025 bool force_journal_dest
= false;
7026 if (srci
->is_dir() && !destdn
->is_auth()) {
7027 if (srci
->is_auth()) {
7028 // if we are auth for srci and exporting it, force journal because journal replay needs
7029 // the source inode to create auth subtrees.
7030 dout(10) << " we are exporting srci, will force journal destdn" << dendl
;
7031 force_journal_dest
= true;
7033 force_journal_dest
= _need_force_journal(srci
, false);
7036 bool force_journal_stray
= false;
7037 if (oldin
&& oldin
->is_dir() && straydn
&& !straydn
->is_auth())
7038 force_journal_stray
= _need_force_journal(oldin
, true);
7041 dout(10) << " merging remote and primary links to the same inode" << dendl
;
7043 dout(10) << " reintegrating stray; will avoid changing nlink or dir mtime" << dendl
;
7044 if (force_journal_dest
)
7045 dout(10) << " forcing journal destdn because we (will) have auth subtrees nested beneath it" << dendl
;
7046 if (force_journal_stray
)
7047 dout(10) << " forcing journal straydn because we (will) have auth subtrees nested beneath it" << dendl
;
7049 if (srci
->is_dir() && (destdn
->is_auth() || force_journal_dest
)) {
7050 dout(10) << " noting renamed dir ino " << srci
->ino() << " in metablob" << dendl
;
7051 metablob
->renamed_dirino
= srci
->ino();
7052 } else if (oldin
&& oldin
->is_dir() && force_journal_stray
) {
7053 dout(10) << " noting rename target dir " << oldin
->ino() << " in metablob" << dendl
;
7054 metablob
->renamed_dirino
= oldin
->ino();
7058 inode_t
*pi
= 0; // renamed inode
7059 inode_t
*tpi
= 0; // target/overwritten inode
7063 if (destdnl
->is_primary()) {
7064 assert(straydn
); // moving to straydn.
7065 // link--, and move.
7066 if (destdn
->is_auth()) {
7067 tpi
= oldin
->project_inode(); //project_snaprealm
7068 tpi
->version
= straydn
->pre_dirty(tpi
->version
);
7069 tpi
->update_backtrace();
7071 straydn
->push_projected_linkage(oldin
);
7072 } else if (destdnl
->is_remote()) {
7074 if (oldin
->is_auth()) {
7075 tpi
= oldin
->project_inode();
7076 tpi
->version
= oldin
->pre_dirty();
7082 if (srcdnl
->is_remote()) {
7085 if (destdn
->is_auth())
7086 mdr
->more()->pvmap
[destdn
] = destdn
->pre_dirty();
7087 destdn
->push_projected_linkage(srcdnl
->get_remote_ino(), srcdnl
->get_remote_d_type());
7089 if (srci
->is_auth()) {
7090 pi
= srci
->project_inode();
7091 pi
->version
= srci
->pre_dirty();
7094 dout(10) << " will merge remote onto primary link" << dendl
;
7095 if (destdn
->is_auth()) {
7096 pi
= oldin
->project_inode();
7097 pi
->version
= mdr
->more()->pvmap
[destdn
] = destdn
->pre_dirty(oldin
->inode
.version
);
7101 if (destdn
->is_auth()) {
7103 if (srcdn
->is_auth())
7104 oldpv
= srci
->get_projected_version();
7106 oldpv
= _rename_prepare_import(mdr
, srcdn
, client_map_bl
);
7108 // note which dirfrags have child subtrees in the journal
7109 // event, so that we can open those (as bounds) during replay.
7110 if (srci
->is_dir()) {
7112 srci
->get_dirfrags(ls
);
7113 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
7115 if (!dir
->is_auth())
7116 metablob
->renamed_dir_frags
.push_back(dir
->get_frag());
7118 dout(10) << " noting renamed dir open frags " << metablob
->renamed_dir_frags
<< dendl
;
7121 pi
= srci
->project_inode(); // project snaprealm if srcdnl->is_primary
7122 // & srcdnl->snaprealm
7123 pi
->version
= mdr
->more()->pvmap
[destdn
] = destdn
->pre_dirty(oldpv
);
7124 pi
->update_backtrace();
7126 destdn
->push_projected_linkage(srci
);
7130 if (srcdn
->is_auth())
7131 mdr
->more()->pvmap
[srcdn
] = srcdn
->pre_dirty();
7132 srcdn
->push_projected_linkage(); // push null linkage
7136 pi
->ctime
= mdr
->get_op_stamp();
7142 tpi
->ctime
= mdr
->get_op_stamp();
7144 destdn
->make_path_string(tpi
->stray_prior_path
, true);
7146 if (tpi
->nlink
== 0)
7147 oldin
->state_set(CInode::STATE_ORPHAN
);
7151 // prepare nesting, mtime updates
7152 int predirty_dir
= silent
? 0:PREDIRTY_DIR
;
7154 // guarantee stray dir is processed first during journal replay. unlink the old inode,
7155 // then link the source inode to destdn
7156 if (destdnl
->is_primary()) {
7158 if (straydn
->is_auth()) {
7159 metablob
->add_dir_context(straydn
->get_dir());
7160 metablob
->add_dir(straydn
->get_dir(), true);
7165 if (destdn
->is_auth() && !destdnl
->is_null()) {
7166 mdcache
->predirty_journal_parents(mdr
, metablob
, oldin
, destdn
->get_dir(),
7167 (destdnl
->is_primary() ? PREDIRTY_PRIMARY
:0)|predirty_dir
, -1);
7168 if (destdnl
->is_primary()) {
7170 mdcache
->predirty_journal_parents(mdr
, metablob
, oldin
, straydn
->get_dir(),
7171 PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
7176 int predirty_primary
= (srcdnl
->is_primary() && srcdn
->get_dir() != destdn
->get_dir()) ? PREDIRTY_PRIMARY
:0;
7177 int flags
= predirty_dir
| predirty_primary
;
7178 if (srcdn
->is_auth())
7179 mdcache
->predirty_journal_parents(mdr
, metablob
, srci
, srcdn
->get_dir(), PREDIRTY_SHALLOW
|flags
, -1);
7180 if (destdn
->is_auth())
7181 mdcache
->predirty_journal_parents(mdr
, metablob
, srci
, destdn
->get_dir(), flags
, 1);
7183 SnapRealm
*src_realm
= srci
->find_snaprealm();
7184 SnapRealm
*dest_realm
= destdn
->get_dir()->inode
->find_snaprealm();
7185 snapid_t next_dest_snap
= dest_realm
->get_newest_seq() + 1;
7187 // add it all to the metablob
7190 if (destdnl
->is_primary()) {
7192 if (destdn
->is_auth()) {
7193 // project snaprealm, too
7194 if (oldin
->snaprealm
|| dest_realm
->get_newest_seq() + 1 > oldin
->get_oldest_snap())
7195 oldin
->project_past_snaprealm_parent(straydn
->get_dir()->inode
->find_snaprealm());
7196 straydn
->first
= MAX(oldin
->first
, next_dest_snap
);
7197 metablob
->add_primary_dentry(straydn
, oldin
, true, true);
7198 } else if (force_journal_stray
) {
7199 dout(10) << " forced journaling straydn " << *straydn
<< dendl
;
7200 metablob
->add_dir_context(straydn
->get_dir());
7201 metablob
->add_primary_dentry(straydn
, oldin
, true);
7203 } else if (destdnl
->is_remote()) {
7204 if (oldin
->is_auth()) {
7206 metablob
->add_dir_context(oldin
->get_projected_parent_dir());
7207 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, oldin
->get_projected_parent_dn(),
7208 CEPH_NOSNAP
, 0, destdnl
);
7209 metablob
->add_primary_dentry(oldin
->get_projected_parent_dn(), oldin
, true);
7215 if (srcdnl
->is_remote()) {
7217 if (destdn
->is_auth() && !destdnl
->is_null())
7218 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, destdn
, CEPH_NOSNAP
, 0, destdnl
);
7220 destdn
->first
= MAX(destdn
->first
, next_dest_snap
);
7222 if (destdn
->is_auth())
7223 metablob
->add_remote_dentry(destdn
, true, srcdnl
->get_remote_ino(), srcdnl
->get_remote_d_type());
7224 if (srci
->get_projected_parent_dn()->is_auth()) { // it's remote
7225 metablob
->add_dir_context(srci
->get_projected_parent_dir());
7226 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, srci
->get_projected_parent_dn(), CEPH_NOSNAP
, 0, srcdnl
);
7227 metablob
->add_primary_dentry(srci
->get_projected_parent_dn(), srci
, true);
7230 if (destdn
->is_auth() && !destdnl
->is_null())
7231 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, destdn
, CEPH_NOSNAP
, 0, destdnl
);
7233 destdn
->first
= MAX(destdn
->first
, next_dest_snap
);
7235 if (destdn
->is_auth())
7236 metablob
->add_primary_dentry(destdn
, destdnl
->get_inode(), true, true);
7238 } else if (srcdnl
->is_primary()) {
7239 // project snap parent update?
7240 if (destdn
->is_auth() && src_realm
!= dest_realm
&&
7241 (srci
->snaprealm
|| src_realm
->get_newest_seq() + 1 > srci
->get_oldest_snap()))
7242 srci
->project_past_snaprealm_parent(dest_realm
);
7244 if (destdn
->is_auth() && !destdnl
->is_null())
7245 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, destdn
, CEPH_NOSNAP
, 0, destdnl
);
7247 destdn
->first
= MAX(destdn
->first
, next_dest_snap
);
7249 if (destdn
->is_auth())
7250 metablob
->add_primary_dentry(destdn
, srci
, true, true);
7251 else if (force_journal_dest
) {
7252 dout(10) << " forced journaling destdn " << *destdn
<< dendl
;
7253 metablob
->add_dir_context(destdn
->get_dir());
7254 metablob
->add_primary_dentry(destdn
, srci
, true);
7255 if (srcdn
->is_auth() && srci
->is_dir()) {
7256 // journal new subtrees root dirfrags
7258 srci
->get_dirfrags(ls
);
7259 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
7262 metablob
->add_dir(dir
, true);
7269 if (srcdn
->is_auth()) {
7270 dout(10) << " journaling srcdn " << *srcdn
<< dendl
;
7271 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, srcdn
, CEPH_NOSNAP
, 0, srcdnl
);
7272 // also journal the inode in case we need do slave rename rollback. It is Ok to add
7273 // both primary and NULL dentries. Because during journal replay, null dentry is
7274 // processed after primary dentry.
7275 if (srcdnl
->is_primary() && !srci
->is_dir() && !destdn
->is_auth())
7276 metablob
->add_primary_dentry(srcdn
, srci
, true);
7277 metablob
->add_null_dentry(srcdn
, true);
7279 dout(10) << " NOT journaling srcdn " << *srcdn
<< dendl
;
7281 // make renamed inode first track the dn
7282 if (srcdnl
->is_primary() && destdn
->is_auth())
7283 srci
->first
= destdn
->first
;
7285 if (oldin
&& oldin
->is_dir()) {
7287 mdcache
->project_subtree_rename(oldin
, destdn
->get_dir(), straydn
->get_dir());
7290 mdcache
->project_subtree_rename(srci
, srcdn
->get_dir(), destdn
->get_dir());
7295 void Server::_rename_apply(MDRequestRef
& mdr
, CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
7297 dout(10) << "_rename_apply " << *mdr
<< " " << *srcdn
<< " " << *destdn
<< dendl
;
7298 dout(10) << " pvs " << mdr
->more()->pvmap
<< dendl
;
7300 CDentry::linkage_t
*srcdnl
= srcdn
->get_linkage();
7301 CDentry::linkage_t
*destdnl
= destdn
->get_linkage();
7303 CInode
*oldin
= destdnl
->get_inode();
7305 // primary+remote link merge?
7306 bool linkmerge
= (srcdnl
->get_inode() == destdnl
->get_inode() &&
7307 (srcdnl
->is_primary() || destdnl
->is_primary()));
7311 if (destdnl
->is_primary()) {
7313 dout(10) << "straydn is " << *straydn
<< dendl
;
7314 destdn
->get_dir()->unlink_inode(destdn
, false);
7316 straydn
->pop_projected_linkage();
7317 if (mdr
->is_slave() && !mdr
->more()->slave_update_journaled
)
7318 assert(!straydn
->is_projected()); // no other projected
7320 mdcache
->touch_dentry_bottom(straydn
); // drop dn as quickly as possible.
7323 if (destdn
->is_auth()) {
7324 bool hadrealm
= (oldin
->snaprealm
? true : false);
7325 oldin
->pop_and_dirty_projected_inode(mdr
->ls
);
7326 if (oldin
->snaprealm
&& !hadrealm
)
7327 mdcache
->do_realm_invalidate_and_update_notify(oldin
, CEPH_SNAP_OP_SPLIT
);
7329 // FIXME this snaprealm is not filled out correctly
7330 //oldin->open_snaprealm(); might be sufficient..
7332 } else if (destdnl
->is_remote()) {
7333 destdn
->get_dir()->unlink_inode(destdn
, false);
7334 if (oldin
->is_auth())
7335 oldin
->pop_and_dirty_projected_inode(mdr
->ls
);
7339 // unlink src before we relink it at dest
7340 CInode
*in
= srcdnl
->get_inode();
7343 bool srcdn_was_remote
= srcdnl
->is_remote();
7344 srcdn
->get_dir()->unlink_inode(srcdn
);
7347 if (srcdn_was_remote
) {
7350 destdnl
= destdn
->pop_projected_linkage();
7351 if (mdr
->is_slave() && !mdr
->more()->slave_update_journaled
)
7352 assert(!destdn
->is_projected()); // no other projected
7354 destdn
->link_remote(destdnl
, in
);
7355 if (destdn
->is_auth())
7356 destdn
->mark_dirty(mdr
->more()->pvmap
[destdn
], mdr
->ls
);
7359 in
->pop_and_dirty_projected_inode(mdr
->ls
);
7361 dout(10) << "merging remote onto primary link" << dendl
;
7362 oldin
->pop_and_dirty_projected_inode(mdr
->ls
);
7366 dout(10) << "merging primary onto remote link" << dendl
;
7367 destdn
->get_dir()->unlink_inode(destdn
, false);
7369 destdnl
= destdn
->pop_projected_linkage();
7370 if (mdr
->is_slave() && !mdr
->more()->slave_update_journaled
)
7371 assert(!destdn
->is_projected()); // no other projected
7373 // srcdn inode import?
7374 if (!srcdn
->is_auth() && destdn
->is_auth()) {
7375 assert(mdr
->more()->inode_import
.length() > 0);
7377 map
<client_t
,Capability::Import
> imported_caps
;
7379 // finish cap imports
7380 finish_force_open_sessions(mdr
->more()->imported_client_map
, mdr
->more()->sseq_map
);
7381 if (mdr
->more()->cap_imports
.count(destdnl
->get_inode())) {
7382 mdcache
->migrator
->finish_import_inode_caps(destdnl
->get_inode(),
7383 mdr
->more()->srcdn_auth_mds
, true,
7384 mdr
->more()->cap_imports
[destdnl
->get_inode()],
7388 mdr
->more()->inode_import
.clear();
7389 ::encode(imported_caps
, mdr
->more()->inode_import
);
7391 /* hack: add an auth pin for each xlock we hold. These were
7392 * remote xlocks previously but now they're local and
7393 * we're going to try and unpin when we xlock_finish. */
7394 for (set
<SimpleLock
*>::iterator i
= mdr
->xlocks
.begin();
7395 i
!= mdr
->xlocks
.end();
7397 if ((*i
)->get_parent() == destdnl
->get_inode() &&
7398 !(*i
)->is_locallock())
7399 mds
->locker
->xlock_import(*i
);
7401 // hack: fix auth bit
7402 in
->state_set(CInode::STATE_AUTH
);
7404 mdr
->clear_ambiguous_auth();
7407 if (destdn
->is_auth()) {
7408 in
->pop_and_dirty_projected_inode(mdr
->ls
);
7411 // FIXME: fix up snaprealm!
7416 if (srcdn
->is_auth())
7417 srcdn
->mark_dirty(mdr
->more()->pvmap
[srcdn
], mdr
->ls
);
7418 srcdn
->pop_projected_linkage();
7419 if (mdr
->is_slave() && !mdr
->more()->slave_update_journaled
)
7420 assert(!srcdn
->is_projected()); // no other projected
7422 // apply remaining projected inodes (nested)
7425 // update subtree map?
7426 if (destdnl
->is_primary() && in
->is_dir())
7427 mdcache
->adjust_subtree_after_rename(in
, srcdn
->get_dir(), true);
7429 if (straydn
&& oldin
->is_dir())
7430 mdcache
->adjust_subtree_after_rename(oldin
, destdn
->get_dir(), true);
7432 // removing a new dn?
7433 if (srcdn
->is_auth())
7434 srcdn
->get_dir()->try_remove_unlinked_dn(srcdn
);
7442 class C_MDS_SlaveRenamePrep
: public ServerLogContext
{
7443 CDentry
*srcdn
, *destdn
, *straydn
;
7445 C_MDS_SlaveRenamePrep(Server
*s
, MDRequestRef
& m
, CDentry
*sr
, CDentry
*de
, CDentry
*st
) :
7446 ServerLogContext(s
, m
), srcdn(sr
), destdn(de
), straydn(st
) {}
7447 void finish(int r
) override
{
7448 server
->_logged_slave_rename(mdr
, srcdn
, destdn
, straydn
);
7452 class C_MDS_SlaveRenameCommit
: public ServerContext
{
7454 CDentry
*srcdn
, *destdn
, *straydn
;
7456 C_MDS_SlaveRenameCommit(Server
*s
, MDRequestRef
& m
, CDentry
*sr
, CDentry
*de
, CDentry
*st
) :
7457 ServerContext(s
), mdr(m
), srcdn(sr
), destdn(de
), straydn(st
) {}
7458 void finish(int r
) override
{
7459 server
->_commit_slave_rename(mdr
, r
, srcdn
, destdn
, straydn
);
7463 class C_MDS_SlaveRenameSessionsFlushed
: public ServerContext
{
7466 C_MDS_SlaveRenameSessionsFlushed(Server
*s
, MDRequestRef
& r
) :
7467 ServerContext(s
), mdr(r
) {}
7468 void finish(int r
) override
{
7469 server
->_slave_rename_sessions_flushed(mdr
);
7473 /* This function DOES put the mdr->slave_request before returning*/
7474 void Server::handle_slave_rename_prep(MDRequestRef
& mdr
)
7476 dout(10) << "handle_slave_rename_prep " << *mdr
7477 << " " << mdr
->slave_request
->srcdnpath
7478 << " to " << mdr
->slave_request
->destdnpath
7481 if (mdr
->slave_request
->is_interrupted()) {
7482 dout(10) << " slave request interrupted, sending noop reply" << dendl
;
7483 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, MMDSSlaveRequest::OP_RENAMEPREPACK
);
7484 reply
->mark_interrupted();
7485 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
7486 mdr
->slave_request
->put();
7487 mdr
->slave_request
= 0;
7492 filepath
destpath(mdr
->slave_request
->destdnpath
);
7493 dout(10) << " dest " << destpath
<< dendl
;
7494 vector
<CDentry
*> trace
;
7495 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, destpath
, &trace
, NULL
, MDS_TRAVERSE_DISCOVERXLOCK
);
7498 mdcache
->find_ino_peers(destpath
.get_ino(), new C_MDS_RetryRequest(mdcache
, mdr
),
7502 assert(r
== 0); // we shouldn't get an error here!
7504 CDentry
*destdn
= trace
[trace
.size()-1];
7505 CDentry::linkage_t
*destdnl
= destdn
->get_projected_linkage();
7506 dout(10) << " destdn " << *destdn
<< dendl
;
7510 filepath
srcpath(mdr
->slave_request
->srcdnpath
);
7511 dout(10) << " src " << srcpath
<< dendl
;
7512 CInode
*srci
= nullptr;
7513 r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, srcpath
, &trace
, &srci
, MDS_TRAVERSE_DISCOVERXLOCK
);
7517 // srcpath must not point to a null dentry
7518 assert(srci
!= nullptr);
7520 CDentry
*srcdn
= trace
[trace
.size()-1];
7521 CDentry::linkage_t
*srcdnl
= srcdn
->get_projected_linkage();
7522 dout(10) << " srcdn " << *srcdn
<< dendl
;
7527 bool linkmerge
= (srcdnl
->get_inode() == destdnl
->get_inode() &&
7528 (srcdnl
->is_primary() || destdnl
->is_primary()));
7529 CDentry
*straydn
= mdr
->straydn
;
7530 if (destdnl
->is_primary() && !linkmerge
)
7533 mdr
->set_op_stamp(mdr
->slave_request
->op_stamp
);
7534 mdr
->more()->srcdn_auth_mds
= srcdn
->authority().first
;
7536 // set up commit waiter (early, to clean up any freezing etc we do)
7537 if (!mdr
->more()->slave_commit
)
7538 mdr
->more()->slave_commit
= new C_MDS_SlaveRenameCommit(this, mdr
, srcdn
, destdn
, straydn
);
7541 if (srcdn
->is_auth()) {
7542 set
<mds_rank_t
> srcdnrep
;
7543 srcdn
->list_replicas(srcdnrep
);
7545 bool reply_witness
= false;
7546 if (srcdnl
->is_primary() && !srcdnl
->get_inode()->state_test(CInode::STATE_AMBIGUOUSAUTH
)) {
7549 // - avoid conflicting lock state changes
7550 // - avoid concurrent updates to the inode
7551 // (this could also be accomplished with the versionlock)
7552 int allowance
= 2; // 1 for the mdr auth_pin, 1 for the link lock
7553 allowance
+= srcdnl
->get_inode()->is_dir(); // for the snap lock
7554 dout(10) << " freezing srci " << *srcdnl
->get_inode() << " with allowance " << allowance
<< dendl
;
7555 bool frozen_inode
= srcdnl
->get_inode()->freeze_inode(allowance
);
7557 // unfreeze auth pin after freezing the inode to avoid queueing waiters
7558 if (srcdnl
->get_inode()->is_frozen_auth_pin())
7559 mdr
->unfreeze_auth_pin();
7561 if (!frozen_inode
) {
7562 srcdnl
->get_inode()->add_waiter(CInode::WAIT_FROZEN
, new C_MDS_RetryRequest(mdcache
, mdr
));
7567 * set ambiguous auth for srci
7568 * NOTE: we don't worry about ambiguous cache expire as we do
7569 * with subtree migrations because all slaves will pin
7570 * srcdn->get_inode() for duration of this rename.
7572 mdr
->set_ambiguous_auth(srcdnl
->get_inode());
7574 // just mark the source inode as ambiguous auth if more than two MDS are involved.
7575 // the master will send another OP_RENAMEPREP slave request later.
7576 if (mdr
->slave_request
->witnesses
.size() > 1) {
7577 dout(10) << " set srci ambiguous auth; providing srcdn replica list" << dendl
;
7578 reply_witness
= true;
7581 // make sure bystanders have received all lock related messages
7582 for (set
<mds_rank_t
>::iterator p
= srcdnrep
.begin(); p
!= srcdnrep
.end(); ++p
) {
7583 if (*p
== mdr
->slave_to_mds
||
7584 (mds
->is_cluster_degraded() &&
7585 !mds
->mdsmap
->is_clientreplay_or_active_or_stopping(*p
)))
7587 MMDSSlaveRequest
*notify
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
7588 MMDSSlaveRequest::OP_RENAMENOTIFY
);
7589 mds
->send_message_mds(notify
, *p
);
7590 mdr
->more()->waiting_on_slave
.insert(*p
);
7593 // make sure clients have received all cap related messages
7594 set
<client_t
> export_client_set
;
7595 mdcache
->migrator
->get_export_client_set(srcdnl
->get_inode(), export_client_set
);
7597 MDSGatherBuilder
gather(g_ceph_context
);
7598 flush_client_sessions(export_client_set
, gather
);
7599 if (gather
.has_subs()) {
7600 mdr
->more()->waiting_on_slave
.insert(MDS_RANK_NONE
);
7601 gather
.set_finisher(new C_MDS_SlaveRenameSessionsFlushed(this, mdr
));
7606 // is witness list sufficient?
7607 for (set
<mds_rank_t
>::iterator p
= srcdnrep
.begin(); p
!= srcdnrep
.end(); ++p
) {
7608 if (*p
== mdr
->slave_to_mds
||
7609 mdr
->slave_request
->witnesses
.count(*p
)) continue;
7610 dout(10) << " witness list insufficient; providing srcdn replica list" << dendl
;
7611 reply_witness
= true;
7615 if (reply_witness
) {
7616 assert(!srcdnrep
.empty());
7617 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
7618 MMDSSlaveRequest::OP_RENAMEPREPACK
);
7619 reply
->witnesses
.swap(srcdnrep
);
7620 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
7621 mdr
->slave_request
->put();
7622 mdr
->slave_request
= 0;
7625 dout(10) << " witness list sufficient: includes all srcdn replicas" << dendl
;
7626 if (!mdr
->more()->waiting_on_slave
.empty()) {
7627 dout(10) << " still waiting for rename notify acks from "
7628 << mdr
->more()->waiting_on_slave
<< dendl
;
7631 } else if (srcdnl
->is_primary() && srcdn
->authority() != destdn
->authority()) {
7632 // set ambiguous auth for srci on witnesses
7633 mdr
->set_ambiguous_auth(srcdnl
->get_inode());
7636 // encode everything we'd need to roll this back... basically, just the original state.
7637 rename_rollback rollback
;
7639 rollback
.reqid
= mdr
->reqid
;
7641 rollback
.orig_src
.dirfrag
= srcdn
->get_dir()->dirfrag();
7642 rollback
.orig_src
.dirfrag_old_mtime
= srcdn
->get_dir()->get_projected_fnode()->fragstat
.mtime
;
7643 rollback
.orig_src
.dirfrag_old_rctime
= srcdn
->get_dir()->get_projected_fnode()->rstat
.rctime
;
7644 rollback
.orig_src
.dname
= srcdn
->name
;
7645 if (srcdnl
->is_primary())
7646 rollback
.orig_src
.ino
= srcdnl
->get_inode()->ino();
7648 assert(srcdnl
->is_remote());
7649 rollback
.orig_src
.remote_ino
= srcdnl
->get_remote_ino();
7650 rollback
.orig_src
.remote_d_type
= srcdnl
->get_remote_d_type();
7653 rollback
.orig_dest
.dirfrag
= destdn
->get_dir()->dirfrag();
7654 rollback
.orig_dest
.dirfrag_old_mtime
= destdn
->get_dir()->get_projected_fnode()->fragstat
.mtime
;
7655 rollback
.orig_dest
.dirfrag_old_rctime
= destdn
->get_dir()->get_projected_fnode()->rstat
.rctime
;
7656 rollback
.orig_dest
.dname
= destdn
->name
;
7657 if (destdnl
->is_primary())
7658 rollback
.orig_dest
.ino
= destdnl
->get_inode()->ino();
7659 else if (destdnl
->is_remote()) {
7660 rollback
.orig_dest
.remote_ino
= destdnl
->get_remote_ino();
7661 rollback
.orig_dest
.remote_d_type
= destdnl
->get_remote_d_type();
7665 rollback
.stray
.dirfrag
= straydn
->get_dir()->dirfrag();
7666 rollback
.stray
.dirfrag_old_mtime
= straydn
->get_dir()->get_projected_fnode()->fragstat
.mtime
;
7667 rollback
.stray
.dirfrag_old_rctime
= straydn
->get_dir()->get_projected_fnode()->rstat
.rctime
;
7668 rollback
.stray
.dname
= straydn
->name
;
7670 ::encode(rollback
, mdr
->more()->rollback_bl
);
7671 dout(20) << " rollback is " << mdr
->more()->rollback_bl
.length() << " bytes" << dendl
;
7674 mdr
->ls
= mdlog
->get_current_segment();
7675 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rename_prep", mdr
->reqid
, mdr
->slave_to_mds
,
7676 ESlaveUpdate::OP_PREPARE
, ESlaveUpdate::RENAME
);
7677 mdlog
->start_entry(le
);
7678 le
->rollback
= mdr
->more()->rollback_bl
;
7680 bufferlist blah
; // inode import data... obviously not used if we're the slave
7681 _rename_prepare(mdr
, &le
->commit
, &blah
, srcdn
, destdn
, straydn
);
7683 if (le
->commit
.empty()) {
7684 dout(10) << " empty metablob, skipping journal" << dendl
;
7685 mdlog
->cancel_entry(le
);
7687 _logged_slave_rename(mdr
, srcdn
, destdn
, straydn
);
7689 mdr
->more()->slave_update_journaled
= true;
7690 submit_mdlog_entry(le
, new C_MDS_SlaveRenamePrep(this, mdr
, srcdn
, destdn
, straydn
),
7696 void Server::_logged_slave_rename(MDRequestRef
& mdr
,
7697 CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
7699 dout(10) << "_logged_slave_rename " << *mdr
<< dendl
;
7702 MMDSSlaveRequest
*reply
= NULL
;
7703 if (!mdr
->aborted
) {
7704 reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, MMDSSlaveRequest::OP_RENAMEPREPACK
);
7705 if (!mdr
->more()->slave_update_journaled
)
7706 reply
->mark_not_journaled();
7709 CDentry::linkage_t
*srcdnl
= srcdn
->get_linkage();
7710 CDentry::linkage_t
*destdnl
= NULL
;
7711 //CDentry::linkage_t *straydnl = straydn ? straydn->get_linkage() : 0;
7714 if (srcdn
->is_auth() && srcdnl
->is_primary()) {
7715 // set export bounds for CInode::encode_export()
7717 if (srcdnl
->get_inode()->is_dir()) {
7718 srcdnl
->get_inode()->get_dirfrags(bounds
);
7719 for (list
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
)
7720 (*p
)->state_set(CDir::STATE_EXPORTBOUND
);
7723 map
<client_t
,entity_inst_t
> exported_client_map
;
7725 mdcache
->migrator
->encode_export_inode(srcdnl
->get_inode(), inodebl
,
7726 exported_client_map
);
7728 for (list
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
)
7729 (*p
)->state_clear(CDir::STATE_EXPORTBOUND
);
7732 ::encode(exported_client_map
, reply
->inode_export
, mds
->mdsmap
->get_up_features());
7733 reply
->inode_export
.claim_append(inodebl
);
7734 reply
->inode_export_v
= srcdnl
->get_inode()->inode
.version
;
7737 // remove mdr auth pin
7738 mdr
->auth_unpin(srcdnl
->get_inode());
7739 mdr
->more()->is_inode_exporter
= true;
7741 if (srcdnl
->get_inode()->is_dirty())
7742 srcdnl
->get_inode()->mark_clean();
7744 dout(10) << " exported srci " << *srcdnl
->get_inode() << dendl
;
7748 _rename_apply(mdr
, srcdn
, destdn
, straydn
);
7750 destdnl
= destdn
->get_linkage();
7753 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), srcdn
->get_dir(), META_POP_IWR
);
7754 if (destdnl
->get_inode() && destdnl
->get_inode()->is_auth())
7755 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), destdnl
->get_inode(),
7759 mdr
->slave_request
->put();
7760 mdr
->slave_request
= 0;
7764 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
7766 assert(mdr
->aborted
);
7767 dout(10) << " abort flag set, finishing" << dendl
;
7768 mdcache
->request_finish(mdr
);
7772 void Server::_commit_slave_rename(MDRequestRef
& mdr
, int r
,
7773 CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
7775 dout(10) << "_commit_slave_rename " << *mdr
<< " r=" << r
<< dendl
;
7777 CDentry::linkage_t
*destdnl
= destdn
->get_linkage();
7779 list
<MDSInternalContextBase
*> finished
;
7781 // unfreeze+singleauth inode
7782 // hmm, do i really need to delay this?
7783 if (mdr
->more()->is_inode_exporter
) {
7785 CInode
*in
= destdnl
->get_inode();
7788 // we exported, clear out any xlocks that we moved to another MDS
7789 set
<SimpleLock
*>::iterator i
= mdr
->xlocks
.begin();
7790 while (i
!= mdr
->xlocks
.end()) {
7791 SimpleLock
*lock
= *i
++;
7793 // we only care about xlocks on the exported inode
7794 if (lock
->get_parent() == in
&&
7795 !lock
->is_locallock())
7796 mds
->locker
->xlock_export(lock
, mdr
.get());
7799 map
<client_t
,Capability::Import
> peer_imported
;
7800 bufferlist::iterator bp
= mdr
->more()->inode_import
.begin();
7801 ::decode(peer_imported
, bp
);
7803 dout(10) << " finishing inode export on " << *destdnl
->get_inode() << dendl
;
7804 mdcache
->migrator
->finish_export_inode(destdnl
->get_inode(),
7805 mdr
->get_mds_stamp(),
7806 mdr
->slave_to_mds
, peer_imported
, finished
);
7807 mds
->queue_waiters(finished
); // this includes SINGLEAUTH waiters.
7810 assert(destdnl
->get_inode()->is_frozen_inode());
7811 destdnl
->get_inode()->unfreeze_inode(finished
);
7815 if (mdr
->more()->is_ambiguous_auth
) {
7816 mdr
->more()->rename_inode
->clear_ambiguous_auth(finished
);
7817 mdr
->more()->is_ambiguous_auth
= false;
7820 if (straydn
&& mdr
->more()->slave_update_journaled
) {
7821 CInode
*strayin
= straydn
->get_projected_linkage()->get_inode();
7822 if (strayin
&& !strayin
->snaprealm
)
7823 mdcache
->clear_dirty_bits_for_stray(strayin
);
7826 mds
->queue_waiters(finished
);
7829 if (mdr
->more()->slave_update_journaled
) {
7830 // write a commit to the journal
7831 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rename_commit", mdr
->reqid
,
7832 mdr
->slave_to_mds
, ESlaveUpdate::OP_COMMIT
,
7833 ESlaveUpdate::RENAME
);
7834 mdlog
->start_entry(le
);
7835 submit_mdlog_entry(le
, new C_MDS_CommittedSlave(this, mdr
), mdr
, __func__
);
7838 _committed_slave(mdr
);
7843 // rollback_bl may be empty if we froze the inode but had to provide an expanded
7844 // witness list from the master, and they failed before we tried prep again.
7845 if (mdr
->more()->rollback_bl
.length()) {
7846 if (mdr
->more()->is_inode_exporter
) {
7847 dout(10) << " reversing inode export of " << *destdnl
->get_inode() << dendl
;
7848 destdnl
->get_inode()->abort_export();
7850 if (mdcache
->is_ambiguous_slave_update(mdr
->reqid
, mdr
->slave_to_mds
)) {
7851 mdcache
->remove_ambiguous_slave_update(mdr
->reqid
, mdr
->slave_to_mds
);
7852 // rollback but preserve the slave request
7853 do_rename_rollback(mdr
->more()->rollback_bl
, mdr
->slave_to_mds
, mdr
, false);
7854 mdr
->more()->rollback_bl
.clear();
7856 do_rename_rollback(mdr
->more()->rollback_bl
, mdr
->slave_to_mds
, mdr
, true);
7858 dout(10) << " rollback_bl empty, not rollback back rename (master failed after getting extra witnesses?)" << dendl
;
7860 if (mdr
->more()->is_ambiguous_auth
) {
7861 if (srcdn
->is_auth())
7862 mdr
->more()->rename_inode
->unfreeze_inode(finished
);
7864 mdr
->more()->rename_inode
->clear_ambiguous_auth(finished
);
7865 mdr
->more()->is_ambiguous_auth
= false;
7867 mds
->queue_waiters(finished
);
7868 mdcache
->request_finish(mdr
);
7873 void _rollback_repair_dir(MutationRef
& mut
, CDir
*dir
, rename_rollback::drec
&r
, utime_t ctime
,
7874 bool isdir
, int linkunlink
, nest_info_t
&rstat
)
7877 pf
= dir
->project_fnode();
7878 mut
->add_projected_fnode(dir
);
7879 pf
->version
= dir
->pre_dirty();
7882 pf
->fragstat
.nsubdirs
+= linkunlink
;
7884 pf
->fragstat
.nfiles
+= linkunlink
;
7887 pf
->rstat
.rbytes
+= linkunlink
* rstat
.rbytes
;
7888 pf
->rstat
.rfiles
+= linkunlink
* rstat
.rfiles
;
7889 pf
->rstat
.rsubdirs
+= linkunlink
* rstat
.rsubdirs
;
7890 pf
->rstat
.rsnaprealms
+= linkunlink
* rstat
.rsnaprealms
;
7892 if (pf
->fragstat
.mtime
== ctime
) {
7893 pf
->fragstat
.mtime
= r
.dirfrag_old_mtime
;
7894 if (pf
->rstat
.rctime
== ctime
)
7895 pf
->rstat
.rctime
= r
.dirfrag_old_rctime
;
7897 mut
->add_updated_lock(&dir
->get_inode()->filelock
);
7898 mut
->add_updated_lock(&dir
->get_inode()->nestlock
);
7901 struct C_MDS_LoggedRenameRollback
: public ServerLogContext
{
7908 C_MDS_LoggedRenameRollback(Server
*s
, MutationRef
& m
, MDRequestRef
& r
,
7909 CDentry
*sd
, version_t pv
, CDentry
*dd
,
7910 CDentry
*st
, bool f
) :
7911 ServerLogContext(s
, r
), mut(m
), srcdn(sd
), srcdnpv(pv
), destdn(dd
),
7912 straydn(st
), finish_mdr(f
) {}
7913 void finish(int r
) override
{
7914 server
->_rename_rollback_finish(mut
, mdr
, srcdn
, srcdnpv
,
7915 destdn
, straydn
, finish_mdr
);
7919 void Server::do_rename_rollback(bufferlist
&rbl
, mds_rank_t master
, MDRequestRef
& mdr
,
7922 rename_rollback rollback
;
7923 bufferlist::iterator p
= rbl
.begin();
7924 ::decode(rollback
, p
);
7926 dout(10) << "do_rename_rollback on " << rollback
.reqid
<< dendl
;
7927 // need to finish this update before sending resolve to claim the subtree
7928 mdcache
->add_rollback(rollback
.reqid
, master
);
7930 MutationRef
mut(new MutationImpl(nullptr, utime_t(), rollback
.reqid
));
7931 mut
->ls
= mds
->mdlog
->get_current_segment();
7933 CDentry
*srcdn
= NULL
;
7934 CDir
*srcdir
= mdcache
->get_dirfrag(rollback
.orig_src
.dirfrag
);
7936 srcdir
= mdcache
->get_dirfrag(rollback
.orig_src
.dirfrag
.ino
, rollback
.orig_src
.dname
);
7938 dout(10) << " srcdir " << *srcdir
<< dendl
;
7939 srcdn
= srcdir
->lookup(rollback
.orig_src
.dname
);
7941 dout(10) << " srcdn " << *srcdn
<< dendl
;
7942 assert(srcdn
->get_linkage()->is_null());
7944 dout(10) << " srcdn not found" << dendl
;
7946 dout(10) << " srcdir not found" << dendl
;
7948 CDentry
*destdn
= NULL
;
7949 CDir
*destdir
= mdcache
->get_dirfrag(rollback
.orig_dest
.dirfrag
);
7951 destdir
= mdcache
->get_dirfrag(rollback
.orig_dest
.dirfrag
.ino
, rollback
.orig_dest
.dname
);
7953 dout(10) << " destdir " << *destdir
<< dendl
;
7954 destdn
= destdir
->lookup(rollback
.orig_dest
.dname
);
7956 dout(10) << " destdn " << *destdn
<< dendl
;
7958 dout(10) << " destdn not found" << dendl
;
7960 dout(10) << " destdir not found" << dendl
;
7963 if (rollback
.orig_src
.ino
) {
7964 in
= mdcache
->get_inode(rollback
.orig_src
.ino
);
7965 if (in
&& in
->is_dir())
7966 assert(srcdn
&& destdn
);
7968 in
= mdcache
->get_inode(rollback
.orig_src
.remote_ino
);
7970 CDir
*straydir
= NULL
;
7971 CDentry
*straydn
= NULL
;
7972 if (rollback
.stray
.dirfrag
.ino
) {
7973 straydir
= mdcache
->get_dirfrag(rollback
.stray
.dirfrag
);
7975 dout(10) << "straydir " << *straydir
<< dendl
;
7976 straydn
= straydir
->lookup(rollback
.stray
.dname
);
7978 dout(10) << " straydn " << *straydn
<< dendl
;
7979 assert(straydn
->get_linkage()->is_primary());
7981 dout(10) << " straydn not found" << dendl
;
7983 dout(10) << "straydir not found" << dendl
;
7986 CInode
*target
= NULL
;
7987 if (rollback
.orig_dest
.ino
) {
7988 target
= mdcache
->get_inode(rollback
.orig_dest
.ino
);
7990 assert(destdn
&& straydn
);
7991 } else if (rollback
.orig_dest
.remote_ino
)
7992 target
= mdcache
->get_inode(rollback
.orig_dest
.remote_ino
);
7994 // can't use is_auth() in the resolve stage
7995 mds_rank_t whoami
= mds
->get_nodeid();
7997 assert(!destdn
|| destdn
->authority().first
!= whoami
);
7998 assert(!straydn
|| straydn
->authority().first
!= whoami
);
8000 bool force_journal_src
= false;
8001 bool force_journal_dest
= false;
8002 if (in
&& in
->is_dir() && srcdn
->authority().first
!= whoami
)
8003 force_journal_src
= _need_force_journal(in
, false);
8004 if (in
&& target
&& target
->is_dir())
8005 force_journal_dest
= _need_force_journal(in
, true);
8007 version_t srcdnpv
= 0;
8010 if (srcdn
->authority().first
== whoami
)
8011 srcdnpv
= srcdn
->pre_dirty();
8012 if (rollback
.orig_src
.ino
) {
8014 srcdn
->push_projected_linkage(in
);
8016 srcdn
->push_projected_linkage(rollback
.orig_src
.remote_ino
,
8017 rollback
.orig_src
.remote_d_type
);
8022 if (in
->authority().first
== whoami
) {
8023 pi
= in
->project_inode();
8024 mut
->add_projected_inode(in
);
8025 pi
->version
= in
->pre_dirty();
8027 pi
= in
->get_projected_inode();
8028 if (pi
->ctime
== rollback
.ctime
)
8029 pi
->ctime
= rollback
.orig_src
.old_ctime
;
8032 if (srcdn
&& srcdn
->authority().first
== whoami
) {
8034 _rollback_repair_dir(mut
, srcdir
, rollback
.orig_src
, rollback
.ctime
,
8035 in
? in
->is_dir() : false, 1, pi
? pi
->accounted_rstat
: blah
);
8040 if (rollback
.orig_dest
.ino
&& target
) {
8041 destdn
->push_projected_linkage(target
);
8042 } else if (rollback
.orig_dest
.remote_ino
) {
8043 destdn
->push_projected_linkage(rollback
.orig_dest
.remote_ino
,
8044 rollback
.orig_dest
.remote_d_type
);
8046 // the dentry will be trimmed soon, it's ok to have wrong linkage
8047 if (rollback
.orig_dest
.ino
)
8048 assert(mds
->is_resolve());
8049 destdn
->push_projected_linkage();
8054 straydn
->push_projected_linkage();
8058 if (target
->authority().first
== whoami
) {
8059 ti
= target
->project_inode();
8060 mut
->add_projected_inode(target
);
8061 ti
->version
= target
->pre_dirty();
8063 ti
= target
->get_projected_inode();
8064 if (ti
->ctime
== rollback
.ctime
)
8065 ti
->ctime
= rollback
.orig_dest
.old_ctime
;
8066 if (MDS_INO_IS_STRAY(rollback
.orig_src
.dirfrag
.ino
)) {
8067 if (MDS_INO_IS_STRAY(rollback
.orig_dest
.dirfrag
.ino
))
8068 assert(!rollback
.orig_dest
.ino
&& !rollback
.orig_dest
.remote_ino
);
8070 assert(rollback
.orig_dest
.remote_ino
&&
8071 rollback
.orig_dest
.remote_ino
== rollback
.orig_src
.ino
);
8077 dout(0) << " srcdn back to " << *srcdn
<< dendl
;
8079 dout(0) << " srci back to " << *in
<< dendl
;
8081 dout(0) << " destdn back to " << *destdn
<< dendl
;
8083 dout(0) << " desti back to " << *target
<< dendl
;
8086 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rename_rollback", rollback
.reqid
, master
,
8087 ESlaveUpdate::OP_ROLLBACK
, ESlaveUpdate::RENAME
);
8088 mdlog
->start_entry(le
);
8090 if (srcdn
&& (srcdn
->authority().first
== whoami
|| force_journal_src
)) {
8091 le
->commit
.add_dir_context(srcdir
);
8092 if (rollback
.orig_src
.ino
)
8093 le
->commit
.add_primary_dentry(srcdn
, 0, true);
8095 le
->commit
.add_remote_dentry(srcdn
, true);
8098 if (!rollback
.orig_src
.ino
&& // remote linkage
8099 in
&& in
->authority().first
== whoami
) {
8100 le
->commit
.add_dir_context(in
->get_projected_parent_dir());
8101 le
->commit
.add_primary_dentry(in
->get_projected_parent_dn(), in
, true);
8104 if (force_journal_dest
) {
8105 assert(rollback
.orig_dest
.ino
);
8106 le
->commit
.add_dir_context(destdir
);
8107 le
->commit
.add_primary_dentry(destdn
, 0, true);
8110 // slave: no need to journal straydn
8112 if (target
&& target
!= in
&& target
->authority().first
== whoami
) {
8113 assert(rollback
.orig_dest
.remote_ino
);
8114 le
->commit
.add_dir_context(target
->get_projected_parent_dir());
8115 le
->commit
.add_primary_dentry(target
->get_projected_parent_dn(), target
, true);
8118 if (in
&& in
->is_dir() && (srcdn
->authority().first
== whoami
|| force_journal_src
)) {
8119 dout(10) << " noting renamed dir ino " << in
->ino() << " in metablob" << dendl
;
8120 le
->commit
.renamed_dirino
= in
->ino();
8121 if (srcdn
->authority().first
== whoami
) {
8123 in
->get_dirfrags(ls
);
8124 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
8126 if (!dir
->is_auth())
8127 le
->commit
.renamed_dir_frags
.push_back(dir
->get_frag());
8129 dout(10) << " noting renamed dir open frags " << le
->commit
.renamed_dir_frags
<< dendl
;
8131 } else if (force_journal_dest
) {
8132 dout(10) << " noting rename target ino " << target
->ino() << " in metablob" << dendl
;
8133 le
->commit
.renamed_dirino
= target
->ino();
8136 if (target
&& target
->is_dir()) {
8138 mdcache
->project_subtree_rename(target
, straydir
, destdir
);
8141 if (in
&& in
->is_dir()) {
8143 mdcache
->project_subtree_rename(in
, destdir
, srcdir
);
8146 if (mdr
&& !mdr
->more()->slave_update_journaled
) {
8147 assert(le
->commit
.empty());
8148 mdlog
->cancel_entry(le
);
8150 _rename_rollback_finish(mut
, mdr
, srcdn
, srcdnpv
, destdn
, straydn
, finish_mdr
);
8152 assert(!le
->commit
.empty());
8154 mdr
->more()->slave_update_journaled
= false;
8155 MDSLogContextBase
*fin
= new C_MDS_LoggedRenameRollback(this, mut
, mdr
, srcdn
, srcdnpv
,
8156 destdn
, straydn
, finish_mdr
);
8157 submit_mdlog_entry(le
, fin
, mdr
, __func__
);
8162 void Server::_rename_rollback_finish(MutationRef
& mut
, MDRequestRef
& mdr
, CDentry
*srcdn
,
8163 version_t srcdnpv
, CDentry
*destdn
,
8164 CDentry
*straydn
, bool finish_mdr
)
8166 dout(10) << "_rename_rollback_finish " << mut
->reqid
<< dendl
;
8169 straydn
->get_dir()->unlink_inode(straydn
);
8170 straydn
->pop_projected_linkage();
8173 destdn
->get_dir()->unlink_inode(destdn
);
8174 destdn
->pop_projected_linkage();
8177 srcdn
->pop_projected_linkage();
8178 if (srcdn
->authority().first
== mds
->get_nodeid())
8179 srcdn
->mark_dirty(srcdnpv
, mut
->ls
);
8184 if (srcdn
&& srcdn
->get_linkage()->is_primary()) {
8185 CInode
*in
= srcdn
->get_linkage()->get_inode();
8186 if (srcdn
->authority().first
== mds
->get_nodeid())
8187 in
->state_set(CInode::STATE_AUTH
);
8188 // update subtree map?
8189 if (in
&& in
->is_dir()) {
8191 mdcache
->adjust_subtree_after_rename(in
, destdn
->get_dir(), true);
8196 CInode
*oldin
= destdn
->get_linkage()->get_inode();
8197 // update subtree map?
8198 if (oldin
&& oldin
->is_dir()) {
8200 mdcache
->adjust_subtree_after_rename(oldin
, straydn
->get_dir(), true);
8204 if (mds
->is_resolve()) {
8207 root
= mdcache
->get_subtree_root(straydn
->get_dir());
8209 root
= mdcache
->get_subtree_root(destdn
->get_dir());
8211 mdcache
->try_trim_non_auth_subtree(root
);
8215 list
<MDSInternalContextBase
*> finished
;
8216 if (mdr
->more()->is_ambiguous_auth
) {
8217 if (srcdn
->is_auth())
8218 mdr
->more()->rename_inode
->unfreeze_inode(finished
);
8220 mdr
->more()->rename_inode
->clear_ambiguous_auth(finished
);
8221 mdr
->more()->is_ambiguous_auth
= false;
8223 mds
->queue_waiters(finished
);
8224 if (finish_mdr
|| mdr
->aborted
)
8225 mdcache
->request_finish(mdr
);
8227 mdr
->more()->slave_rolling_back
= false;
8230 mdcache
->finish_rollback(mut
->reqid
);
8235 /* This function DOES put the passed message before returning*/
8236 void Server::handle_slave_rename_prep_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*ack
)
8238 dout(10) << "handle_slave_rename_prep_ack " << *mdr
8239 << " witnessed by " << ack
->get_source()
8240 << " " << *ack
<< dendl
;
8241 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
8244 mdr
->more()->slaves
.insert(from
);
8245 if (mdr
->more()->srcdn_auth_mds
== from
&&
8246 mdr
->more()->is_remote_frozen_authpin
&&
8247 !mdr
->more()->is_ambiguous_auth
) {
8248 mdr
->set_ambiguous_auth(mdr
->more()->rename_inode
);
8251 // witnessed? or add extra witnesses?
8252 assert(mdr
->more()->witnessed
.count(from
) == 0);
8253 if (ack
->is_interrupted()) {
8254 dout(10) << " slave request interrupted, noop" << dendl
;
8255 } else if (ack
->witnesses
.empty()) {
8256 mdr
->more()->witnessed
.insert(from
);
8257 if (!ack
->is_not_journaled())
8258 mdr
->more()->has_journaled_slaves
= true;
8260 dout(10) << " extra witnesses (srcdn replicas) are " << ack
->witnesses
<< dendl
;
8261 mdr
->more()->extra_witnesses
.swap(ack
->witnesses
);
8262 mdr
->more()->extra_witnesses
.erase(mds
->get_nodeid()); // not me!
8266 if (ack
->inode_export
.length()) {
8267 dout(10) << " got srci import" << dendl
;
8268 mdr
->more()->inode_import
.claim(ack
->inode_export
);
8269 mdr
->more()->inode_import_v
= ack
->inode_export_v
;
8272 // remove from waiting list
8273 assert(mdr
->more()->waiting_on_slave
.count(from
));
8274 mdr
->more()->waiting_on_slave
.erase(from
);
8276 if (mdr
->more()->waiting_on_slave
.empty())
8277 dispatch_client_request(mdr
); // go again!
8279 dout(10) << "still waiting on slaves " << mdr
->more()->waiting_on_slave
<< dendl
;
8282 void Server::handle_slave_rename_notify_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*ack
)
8284 dout(10) << "handle_slave_rename_notify_ack " << *mdr
<< " from mds."
8285 << ack
->get_source() << dendl
;
8286 assert(mdr
->is_slave());
8287 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
8289 if (mdr
->more()->waiting_on_slave
.count(from
)) {
8290 mdr
->more()->waiting_on_slave
.erase(from
);
8292 if (mdr
->more()->waiting_on_slave
.empty()) {
8293 if (mdr
->slave_request
)
8294 dispatch_slave_request(mdr
);
8296 dout(10) << " still waiting for rename notify acks from "
8297 << mdr
->more()->waiting_on_slave
<< dendl
;
8301 void Server::_slave_rename_sessions_flushed(MDRequestRef
& mdr
)
8303 dout(10) << "_slave_rename_sessions_flushed " << *mdr
<< dendl
;
8305 if (mdr
->more()->waiting_on_slave
.count(MDS_RANK_NONE
)) {
8306 mdr
->more()->waiting_on_slave
.erase(MDS_RANK_NONE
);
8308 if (mdr
->more()->waiting_on_slave
.empty()) {
8309 if (mdr
->slave_request
)
8310 dispatch_slave_request(mdr
);
8312 dout(10) << " still waiting for rename notify acks from "
8313 << mdr
->more()->waiting_on_slave
<< dendl
;
8318 /* This function takes responsibility for the passed mdr*/
8319 void Server::handle_client_lssnap(MDRequestRef
& mdr
)
8321 MClientRequest
*req
= mdr
->client_request
;
8324 CInode
*diri
= mdcache
->get_inode(req
->get_filepath().get_ino());
8325 if (!diri
|| diri
->state_test(CInode::STATE_PURGING
)) {
8326 respond_to_request(mdr
, -ESTALE
);
8329 if (!diri
->is_auth()) {
8330 mdcache
->request_forward(mdr
, diri
->authority().first
);
8333 if (!diri
->is_dir()) {
8334 respond_to_request(mdr
, -ENOTDIR
);
8337 dout(10) << "lssnap on " << *diri
<< dendl
;
8340 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
8341 mds
->locker
->include_snap_rdlocks(rdlocks
, diri
);
8342 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
8345 if (!check_access(mdr
, diri
, MAY_READ
))
8348 SnapRealm
*realm
= diri
->find_snaprealm();
8349 map
<snapid_t
,SnapInfo
*> infomap
;
8350 realm
->get_snap_info(infomap
, diri
->get_oldest_snap());
8352 unsigned max_entries
= req
->head
.args
.readdir
.max_entries
;
8354 max_entries
= infomap
.size();
8355 int max_bytes
= req
->head
.args
.readdir
.max_bytes
;
8357 // make sure at least one item can be encoded
8358 max_bytes
= (512 << 10) + g_conf
->mds_max_xattr_pairs_size
;
8360 __u64 last_snapid
= 0;
8361 string offset_str
= req
->get_path2();
8362 if (!offset_str
.empty())
8363 last_snapid
= realm
->resolve_snapname(offset_str
, diri
->ino());
8366 encode_empty_dirstat(dirbl
);
8368 max_bytes
-= dirbl
.length() - sizeof(__u32
) + sizeof(__u8
) * 2;
8372 map
<snapid_t
,SnapInfo
*>::iterator p
= infomap
.upper_bound(last_snapid
);
8373 for (; p
!= infomap
.end() && num
< max_entries
; ++p
) {
8374 dout(10) << p
->first
<< " -> " << *p
->second
<< dendl
;
8378 if (p
->second
->ino
== diri
->ino())
8379 snap_name
= p
->second
->name
;
8381 snap_name
= p
->second
->get_long_name();
8383 unsigned start_len
= dnbl
.length();
8384 if (int(start_len
+ snap_name
.length() + sizeof(__u32
) + sizeof(LeaseStat
)) > max_bytes
)
8387 ::encode(snap_name
, dnbl
);
8388 encode_infinite_lease(dnbl
);
8390 int r
= diri
->encode_inodestat(dnbl
, mdr
->session
, realm
, p
->first
, max_bytes
- (int)dnbl
.length());
8393 keep
.substr_of(dnbl
, 0, start_len
);
8400 ::encode(num
, dirbl
);
8402 if (p
== infomap
.end()) {
8403 flags
= CEPH_READDIR_FRAG_END
;
8404 if (last_snapid
== 0)
8405 flags
|= CEPH_READDIR_FRAG_COMPLETE
;
8407 ::encode(flags
, dirbl
);
8408 dirbl
.claim_append(dnbl
);
8410 mdr
->reply_extra_bl
= dirbl
;
8412 respond_to_request(mdr
, 0);
8418 struct C_MDS_mksnap_finish
: public ServerLogContext
{
8421 C_MDS_mksnap_finish(Server
*s
, MDRequestRef
& r
, CInode
*di
, SnapInfo
&i
) :
8422 ServerLogContext(s
, r
), diri(di
), info(i
) {}
8423 void finish(int r
) override
{
8424 server
->_mksnap_finish(mdr
, diri
, info
);
8428 /* This function takes responsibility for the passed mdr*/
8429 void Server::handle_client_mksnap(MDRequestRef
& mdr
)
8431 if (!mds
->mdsmap
->allows_snaps()) {
8432 // you can't make snapshots until you set an option right now
8433 respond_to_request(mdr
, -EPERM
);
8437 MClientRequest
*req
= mdr
->client_request
;
8438 CInode
*diri
= mdcache
->get_inode(req
->get_filepath().get_ino());
8439 if (!diri
|| diri
->state_test(CInode::STATE_PURGING
)) {
8440 respond_to_request(mdr
, -ESTALE
);
8444 if (!diri
->is_auth()) { // fw to auth?
8445 mdcache
->request_forward(mdr
, diri
->authority().first
);
8450 if (!diri
->is_dir()) {
8451 respond_to_request(mdr
, -ENOTDIR
);
8454 if (diri
->is_system() && !diri
->is_root()) {
8455 // no snaps in system dirs (root is ok)
8456 respond_to_request(mdr
, -EPERM
);
8460 const string
&snapname
= req
->get_filepath().last_dentry();
8462 if (mdr
->client_request
->get_caller_uid() < g_conf
->mds_snap_min_uid
|| mdr
->client_request
->get_caller_uid() > g_conf
->mds_snap_max_uid
) {
8463 dout(20) << "mksnap " << snapname
<< " on " << *diri
<< " denied to uid " << mdr
->client_request
->get_caller_uid() << dendl
;
8464 respond_to_request(mdr
, -EPERM
);
8468 dout(10) << "mksnap " << snapname
<< " on " << *diri
<< dendl
;
8471 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
8473 mds
->locker
->include_snap_rdlocks(rdlocks
, diri
);
8474 rdlocks
.erase(&diri
->snaplock
);
8475 xlocks
.insert(&diri
->snaplock
);
8477 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
8480 if (!check_access(mdr
, diri
, MAY_WRITE
))
8483 // make sure name is unique
8484 if (diri
->snaprealm
&&
8485 diri
->snaprealm
->exists(snapname
)) {
8486 respond_to_request(mdr
, -EEXIST
);
8489 if (snapname
.length() == 0 ||
8490 snapname
[0] == '_') {
8491 respond_to_request(mdr
, -EINVAL
);
8495 // allocate a snapid
8496 if (!mdr
->more()->stid
) {
8498 mds
->snapclient
->prepare_create(diri
->ino(), snapname
,
8499 mdr
->get_mds_stamp(),
8500 &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
8501 new C_MDS_RetryRequest(mdcache
, mdr
));
8505 version_t stid
= mdr
->more()->stid
;
8507 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
8508 ::decode(snapid
, p
);
8509 dout(10) << " stid " << stid
<< " snapid " << snapid
<< dendl
;
8513 info
.ino
= diri
->ino();
8514 info
.snapid
= snapid
;
8515 info
.name
= snapname
;
8516 info
.stamp
= mdr
->get_op_stamp();
8518 inode_t
*pi
= diri
->project_inode();
8519 pi
->ctime
= info
.stamp
;
8520 pi
->version
= diri
->pre_dirty();
8522 // project the snaprealm
8523 sr_t
*newsnap
= diri
->project_snaprealm(snapid
);
8524 newsnap
->snaps
[snapid
] = info
;
8525 newsnap
->seq
= snapid
;
8526 newsnap
->last_created
= snapid
;
8528 // journal the inode changes
8529 mdr
->ls
= mdlog
->get_current_segment();
8530 EUpdate
*le
= new EUpdate(mdlog
, "mksnap");
8531 mdlog
->start_entry(le
);
8533 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
8534 le
->metablob
.add_table_transaction(TABLE_SNAP
, stid
);
8535 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, diri
, 0, PREDIRTY_PRIMARY
, false);
8536 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
8538 // journal the snaprealm changes
8539 submit_mdlog_entry(le
, new C_MDS_mksnap_finish(this, mdr
, diri
, info
),
8544 void Server::_mksnap_finish(MDRequestRef
& mdr
, CInode
*diri
, SnapInfo
&info
)
8546 dout(10) << "_mksnap_finish " << *mdr
<< " " << info
<< dendl
;
8548 int op
= (diri
->snaprealm
? CEPH_SNAP_OP_CREATE
: CEPH_SNAP_OP_SPLIT
);
8550 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
8553 mds
->snapclient
->commit(mdr
->more()->stid
, mdr
->ls
);
8556 dout(10) << "snaprealm now " << *diri
->snaprealm
<< dendl
;
8558 mdcache
->do_realm_invalidate_and_update_notify(diri
, op
);
8562 mdr
->snapid
= info
.snapid
;
8564 respond_to_request(mdr
, 0);
8570 struct C_MDS_rmsnap_finish
: public ServerLogContext
{
8573 C_MDS_rmsnap_finish(Server
*s
, MDRequestRef
& r
, CInode
*di
, snapid_t sn
) :
8574 ServerLogContext(s
, r
), diri(di
), snapid(sn
) {}
8575 void finish(int r
) override
{
8576 server
->_rmsnap_finish(mdr
, diri
, snapid
);
8580 /* This function takes responsibility for the passed mdr*/
8581 void Server::handle_client_rmsnap(MDRequestRef
& mdr
)
8583 MClientRequest
*req
= mdr
->client_request
;
8585 CInode
*diri
= mdcache
->get_inode(req
->get_filepath().get_ino());
8586 if (!diri
|| diri
->state_test(CInode::STATE_PURGING
)) {
8587 respond_to_request(mdr
, -ESTALE
);
8590 if (!diri
->is_auth()) { // fw to auth?
8591 mdcache
->request_forward(mdr
, diri
->authority().first
);
8594 if (!diri
->is_dir()) {
8595 respond_to_request(mdr
, -ENOTDIR
);
8599 const string
&snapname
= req
->get_filepath().last_dentry();
8601 if (mdr
->client_request
->get_caller_uid() < g_conf
->mds_snap_min_uid
|| mdr
->client_request
->get_caller_uid() > g_conf
->mds_snap_max_uid
) {
8602 dout(20) << "rmsnap " << snapname
<< " on " << *diri
<< " denied to uid " << mdr
->client_request
->get_caller_uid() << dendl
;
8603 respond_to_request(mdr
, -EPERM
);
8607 dout(10) << "rmsnap " << snapname
<< " on " << *diri
<< dendl
;
8610 if (snapname
.length() == 0 || snapname
[0] == '_') {
8611 respond_to_request(mdr
, -EINVAL
); // can't prune a parent snap, currently.
8614 if (!diri
->snaprealm
|| !diri
->snaprealm
->exists(snapname
)) {
8615 respond_to_request(mdr
, -ENOENT
);
8618 snapid_t snapid
= diri
->snaprealm
->resolve_snapname(snapname
, diri
->ino());
8619 dout(10) << " snapname " << snapname
<< " is " << snapid
<< dendl
;
8621 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
8622 mds
->locker
->include_snap_rdlocks(rdlocks
, diri
);
8623 rdlocks
.erase(&diri
->snaplock
);
8624 xlocks
.insert(&diri
->snaplock
);
8626 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
8629 if (!check_access(mdr
, diri
, MAY_WRITE
))
8633 if (!mdr
->more()->stid
) {
8634 mds
->snapclient
->prepare_destroy(diri
->ino(), snapid
,
8635 &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
8636 new C_MDS_RetryRequest(mdcache
, mdr
));
8639 version_t stid
= mdr
->more()->stid
;
8640 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
8643 dout(10) << " stid is " << stid
<< ", seq is " << seq
<< dendl
;
8646 inode_t
*pi
= diri
->project_inode();
8647 pi
->version
= diri
->pre_dirty();
8648 pi
->ctime
= mdr
->get_op_stamp();
8650 mdr
->ls
= mdlog
->get_current_segment();
8651 EUpdate
*le
= new EUpdate(mdlog
, "rmsnap");
8652 mdlog
->start_entry(le
);
8654 // project the snaprealm
8655 sr_t
*newnode
= diri
->project_snaprealm();
8656 newnode
->snaps
.erase(snapid
);
8658 newnode
->last_destroyed
= seq
;
8660 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
8661 le
->metablob
.add_table_transaction(TABLE_SNAP
, stid
);
8662 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, diri
, 0, PREDIRTY_PRIMARY
, false);
8663 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
8665 submit_mdlog_entry(le
, new C_MDS_rmsnap_finish(this, mdr
, diri
, snapid
),
8670 void Server::_rmsnap_finish(MDRequestRef
& mdr
, CInode
*diri
, snapid_t snapid
)
8672 dout(10) << "_rmsnap_finish " << *mdr
<< " " << snapid
<< dendl
;
8673 snapid_t stid
= mdr
->more()->stid
;
8674 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
8678 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
8681 mds
->snapclient
->commit(stid
, mdr
->ls
);
8683 dout(10) << "snaprealm now " << *diri
->snaprealm
<< dendl
;
8685 mdcache
->do_realm_invalidate_and_update_notify(diri
, CEPH_SNAP_OP_DESTROY
);
8689 respond_to_request(mdr
, 0);
8691 // purge snapshot data
8692 if (diri
->snaprealm
->have_past_parents_open())
8693 diri
->purge_stale_snap_data(diri
->snaprealm
->get_snaps());
8696 struct C_MDS_renamesnap_finish
: public ServerLogContext
{
8699 C_MDS_renamesnap_finish(Server
*s
, MDRequestRef
& r
, CInode
*di
, snapid_t sn
) :
8700 ServerLogContext(s
, r
), diri(di
), snapid(sn
) {}
8701 void finish(int r
) override
{
8702 server
->_renamesnap_finish(mdr
, diri
, snapid
);
8706 /* This function takes responsibility for the passed mdr*/
8707 void Server::handle_client_renamesnap(MDRequestRef
& mdr
)
8709 MClientRequest
*req
= mdr
->client_request
;
8710 if (req
->get_filepath().get_ino() != req
->get_filepath2().get_ino()) {
8711 respond_to_request(mdr
, -EINVAL
);
8715 CInode
*diri
= mdcache
->get_inode(req
->get_filepath().get_ino());
8716 if (!diri
|| diri
->state_test(CInode::STATE_PURGING
)) {
8717 respond_to_request(mdr
, -ESTALE
);
8721 if (!diri
->is_auth()) { // fw to auth?
8722 mdcache
->request_forward(mdr
, diri
->authority().first
);
8726 if (!diri
->is_dir()) { // dir only
8727 respond_to_request(mdr
, -ENOTDIR
);
8731 if (mdr
->client_request
->get_caller_uid() < g_conf
->mds_snap_min_uid
||
8732 mdr
->client_request
->get_caller_uid() > g_conf
->mds_snap_max_uid
) {
8733 respond_to_request(mdr
, -EPERM
);
8737 const string
&dstname
= req
->get_filepath().last_dentry();
8738 const string
&srcname
= req
->get_filepath2().last_dentry();
8739 dout(10) << "renamesnap " << srcname
<< "->" << dstname
<< " on " << *diri
<< dendl
;
8741 if (srcname
.length() == 0 || srcname
[0] == '_') {
8742 respond_to_request(mdr
, -EINVAL
); // can't rename a parent snap.
8745 if (!diri
->snaprealm
|| !diri
->snaprealm
->exists(srcname
)) {
8746 respond_to_request(mdr
, -ENOENT
);
8749 if (dstname
.length() == 0 || dstname
[0] == '_') {
8750 respond_to_request(mdr
, -EINVAL
);
8753 if (diri
->snaprealm
->exists(dstname
)) {
8754 respond_to_request(mdr
, -EEXIST
);
8758 snapid_t snapid
= diri
->snaprealm
->resolve_snapname(srcname
, diri
->ino());
8759 dout(10) << " snapname " << srcname
<< " is " << snapid
<< dendl
;
8762 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
8764 mds
->locker
->include_snap_rdlocks(rdlocks
, diri
);
8765 rdlocks
.erase(&diri
->snaplock
);
8766 xlocks
.insert(&diri
->snaplock
);
8768 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
8771 if (!check_access(mdr
, diri
, MAY_WRITE
))
8775 if (!mdr
->more()->stid
) {
8776 mds
->snapclient
->prepare_update(diri
->ino(), snapid
, dstname
, utime_t(),
8777 &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
8778 new C_MDS_RetryRequest(mdcache
, mdr
));
8782 version_t stid
= mdr
->more()->stid
;
8783 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
8786 dout(10) << " stid is " << stid
<< ", seq is " << seq
<< dendl
;
8789 inode_t
*pi
= diri
->project_inode();
8790 pi
->ctime
= mdr
->get_op_stamp();
8791 pi
->version
= diri
->pre_dirty();
8793 // project the snaprealm
8794 sr_t
*newsnap
= diri
->project_snaprealm();
8795 assert(newsnap
->snaps
.count(snapid
));
8796 newsnap
->snaps
[snapid
].name
= dstname
;
8798 // journal the inode changes
8799 mdr
->ls
= mdlog
->get_current_segment();
8800 EUpdate
*le
= new EUpdate(mdlog
, "renamesnap");
8801 mdlog
->start_entry(le
);
8803 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
8804 le
->metablob
.add_table_transaction(TABLE_SNAP
, stid
);
8805 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, diri
, 0, PREDIRTY_PRIMARY
, false);
8806 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
8808 // journal the snaprealm changes
8809 submit_mdlog_entry(le
, new C_MDS_renamesnap_finish(this, mdr
, diri
, snapid
),
8814 void Server::_renamesnap_finish(MDRequestRef
& mdr
, CInode
*diri
, snapid_t snapid
)
8816 dout(10) << "_renamesnap_finish " << *mdr
<< " " << snapid
<< dendl
;
8818 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
8821 mds
->snapclient
->commit(mdr
->more()->stid
, mdr
->ls
);
8823 dout(10) << "snaprealm now " << *diri
->snaprealm
<< dendl
;
8825 mdcache
->do_realm_invalidate_and_update_notify(diri
, CEPH_SNAP_OP_UPDATE
, true);
8830 mdr
->snapid
= snapid
;
8831 respond_to_request(mdr
, 0);
8835 * Return true if server is in state RECONNECT and this
8836 * client has not yet reconnected.
8838 bool Server::waiting_for_reconnect(client_t c
) const
8840 return client_reconnect_gather
.count(c
) > 0;
8843 void Server::dump_reconnect_status(Formatter
*f
) const
8845 f
->open_object_section("reconnect_status");
8846 f
->dump_stream("client_reconnect_gather") << client_reconnect_gather
;