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
;
347 assert(session
->is_closed() ||
348 session
->is_closing());
350 blacklisted
= mds
->objecter
->with_osdmap(
351 [session
](const OSDMap
&osd_map
) -> bool {
352 return osd_map
.is_blacklisted(session
->info
.inst
.addr
);
356 dout(10) << "ignoring blacklisted client " << session
->info
.inst
.addr
<< dendl
;
361 session
->set_client_metadata(m
->client_meta
);
362 dout(20) << __func__
<< " CEPH_SESSION_REQUEST_OPEN "
363 << session
->info
.client_metadata
.size() << " metadata entries:" << dendl
;
364 for (map
<string
, string
>::iterator i
= session
->info
.client_metadata
.begin();
365 i
!= session
->info
.client_metadata
.end(); ++i
) {
366 dout(20) << " " << i
->first
<< ": " << i
->second
<< dendl
;
369 // Special case for the 'root' metadata path; validate that the claimed
370 // root is actually within the caps of the session
371 if (session
->info
.client_metadata
.count("root")) {
372 const auto claimed_root
= session
->info
.client_metadata
.at("root");
373 // claimed_root has a leading "/" which we strip before passing
375 if (claimed_root
.empty() || claimed_root
[0] != '/' ||
376 !session
->auth_caps
.path_capable(claimed_root
.substr(1))) {
377 derr
<< __func__
<< " forbidden path claimed as mount root: "
378 << claimed_root
<< " by " << m
->get_source() << dendl
;
379 // Tell the client we're rejecting their open
380 mds
->send_message_client(new MClientSession(CEPH_SESSION_REJECT
), session
);
381 mds
->clog
->warn() << "client session with invalid root '" <<
382 claimed_root
<< "' denied (" << session
->info
.inst
<< ")";
384 // Drop out; don't record this session in SessionMap or journal it.
389 if (session
->is_closed())
390 mds
->sessionmap
.add_session(session
);
392 pv
= mds
->sessionmap
.mark_projected(session
);
393 sseq
= mds
->sessionmap
.set_state(session
, Session::STATE_OPENING
);
394 mds
->sessionmap
.touch_session(session
);
395 mdlog
->start_submit_entry(new ESession(m
->get_source_inst(), true, pv
, m
->client_meta
),
396 new C_MDS_session_finish(this, session
, sseq
, true, pv
));
400 case CEPH_SESSION_REQUEST_RENEWCAPS
:
401 if (session
->is_open() ||
402 session
->is_stale()) {
403 mds
->sessionmap
.touch_session(session
);
404 if (session
->is_stale()) {
405 mds
->sessionmap
.set_state(session
, Session::STATE_OPEN
);
406 mds
->locker
->resume_stale_caps(session
);
407 mds
->sessionmap
.touch_session(session
);
409 m
->get_connection()->send_message(new MClientSession(CEPH_SESSION_RENEWCAPS
, m
->get_seq()));
411 dout(10) << "ignoring renewcaps on non open|stale session (" << session
->get_state_name() << ")" << dendl
;
415 case CEPH_SESSION_REQUEST_CLOSE
:
417 if (session
->is_closed() ||
418 session
->is_closing() ||
419 session
->is_killing()) {
420 dout(10) << "already closed|closing|killing, dropping this req" << dendl
;
424 if (session
->is_importing()) {
425 dout(10) << "ignoring close req on importing session" << dendl
;
429 assert(session
->is_open() ||
430 session
->is_stale() ||
431 session
->is_opening());
432 if (m
->get_seq() < session
->get_push_seq()) {
433 dout(10) << "old push seq " << m
->get_seq() << " < " << session
->get_push_seq()
434 << ", dropping" << dendl
;
438 // We are getting a seq that is higher than expected.
439 // Handle the same as any other seqn error.
441 if (m
->get_seq() != session
->get_push_seq()) {
442 dout(0) << "old push seq " << m
->get_seq() << " != " << session
->get_push_seq()
443 << ", BUGGY!" << dendl
;
444 mds
->clog
->warn() << "incorrect push seq " << m
->get_seq() << " != "
445 << session
->get_push_seq() << ", dropping" << " from client : " << session
->get_human_name();
449 journal_close_session(session
, Session::STATE_CLOSING
, NULL
);
453 case CEPH_SESSION_FLUSHMSG_ACK
:
454 finish_flush_session(session
, m
->get_seq());
457 case CEPH_SESSION_REQUEST_FLUSH_MDLOG
:
467 void Server::flush_client_sessions(set
<client_t
>& client_set
, MDSGatherBuilder
& gather
)
469 for (set
<client_t
>::iterator p
= client_set
.begin(); p
!= client_set
.end(); ++p
) {
470 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(p
->v
));
472 if (!session
->is_open() ||
473 !session
->connection
.get() ||
474 !session
->connection
->has_feature(CEPH_FEATURE_EXPORT_PEER
))
476 version_t seq
= session
->wait_for_flush(gather
.new_sub());
477 mds
->send_message_client(new MClientSession(CEPH_SESSION_FLUSHMSG
, seq
), session
);
481 void Server::finish_flush_session(Session
*session
, version_t seq
)
483 list
<MDSInternalContextBase
*> finished
;
484 session
->finish_flush(seq
, finished
);
485 mds
->queue_waiters(finished
);
488 void Server::_session_logged(Session
*session
, uint64_t state_seq
, bool open
, version_t pv
,
489 interval_set
<inodeno_t
>& inos
, version_t piv
)
491 dout(10) << "_session_logged " << session
->info
.inst
<< " state_seq " << state_seq
<< " " << (open
? "open":"close")
492 << " " << pv
<< dendl
;
495 assert(session
->is_closing() || session
->is_killing() ||
496 session
->is_opening()); // re-open closing session
497 session
->info
.prealloc_inos
.subtract(inos
);
498 mds
->inotable
->apply_release_ids(inos
);
499 assert(mds
->inotable
->get_version() == piv
);
502 mds
->sessionmap
.mark_dirty(session
);
505 if (session
->get_state_seq() != state_seq
) {
506 dout(10) << " journaled state_seq " << state_seq
<< " != current " << session
->get_state_seq()
507 << ", noop" << dendl
;
508 // close must have been canceled (by an import?), or any number of other things..
510 assert(session
->is_opening());
511 mds
->sessionmap
.set_state(session
, Session::STATE_OPEN
);
512 mds
->sessionmap
.touch_session(session
);
513 assert(session
->connection
!= NULL
);
514 session
->connection
->send_message(new MClientSession(CEPH_SESSION_OPEN
));
515 if (mdcache
->is_readonly())
516 session
->connection
->send_message(new MClientSession(CEPH_SESSION_FORCE_RO
));
517 } else if (session
->is_closing() ||
518 session
->is_killing()) {
519 // kill any lingering capabilities, leases, requests
520 while (!session
->caps
.empty()) {
521 Capability
*cap
= session
->caps
.front();
522 CInode
*in
= cap
->get_inode();
523 dout(20) << " killing capability " << ccap_string(cap
->issued()) << " on " << *in
<< dendl
;
524 mds
->locker
->remove_client_cap(in
, session
->info
.inst
.name
.num());
526 while (!session
->leases
.empty()) {
527 ClientLease
*r
= session
->leases
.front();
528 CDentry
*dn
= static_cast<CDentry
*>(r
->parent
);
529 dout(20) << " killing client lease of " << *dn
<< dendl
;
530 dn
->remove_client_lease(r
, mds
->locker
);
532 if (client_reconnect_gather
.count(session
->info
.get_client())) {
533 dout(20) << " removing client from reconnect set" << dendl
;
534 client_reconnect_gather
.erase(session
->info
.get_client());
536 if (client_reconnect_gather
.empty()) {
537 dout(7) << " client " << session
->info
.inst
<< " was last reconnect, finishing" << dendl
;
538 reconnect_gather_finish();
542 if (session
->is_closing()) {
543 // mark con disposable. if there is a fault, we will get a
544 // reset and clean it up. if the client hasn't received the
545 // CLOSE message yet, they will reconnect and get an
546 // ms_handle_remote_reset() and realize they had in fact closed.
547 // do this *before* sending the message to avoid a possible
549 if (session
->connection
!= NULL
) {
550 // Conditional because terminate_sessions will indiscrimately
551 // put sessions in CLOSING whether they ever had a conn or not.
552 session
->connection
->mark_disposable();
556 mds
->send_message_client(new MClientSession(CEPH_SESSION_CLOSE
), session
);
557 mds
->sessionmap
.set_state(session
, Session::STATE_CLOSED
);
559 mds
->sessionmap
.remove_session(session
);
560 } else if (session
->is_killing()) {
561 // destroy session, close connection
562 if (session
->connection
!= NULL
) {
563 session
->connection
->mark_down();
565 mds
->sessionmap
.remove_session(session
);
575 * Inject sessions from some source other than actual connections.
578 * - sessions inferred from journal replay
579 * - sessions learned from other MDSs during rejoin
580 * - sessions learned from other MDSs during dir/caps migration
581 * - sessions learned from other MDSs during a cross-MDS rename
583 version_t
Server::prepare_force_open_sessions(map
<client_t
,entity_inst_t
>& cm
,
584 map
<client_t
,uint64_t>& sseqmap
)
586 version_t pv
= mds
->sessionmap
.get_projected();
588 dout(10) << "prepare_force_open_sessions " << pv
589 << " on " << cm
.size() << " clients"
591 for (map
<client_t
,entity_inst_t
>::iterator p
= cm
.begin(); p
!= cm
.end(); ++p
) {
593 Session
*session
= mds
->sessionmap
.get_or_add_session(p
->second
);
594 pv
= mds
->sessionmap
.mark_projected(session
);
595 if (session
->is_closed() ||
596 session
->is_closing() ||
597 session
->is_killing())
598 sseqmap
[p
->first
] = mds
->sessionmap
.set_state(session
, Session::STATE_OPENING
);
600 assert(session
->is_open() ||
601 session
->is_opening() ||
602 session
->is_stale());
603 session
->inc_importing();
608 void Server::finish_force_open_sessions(map
<client_t
,entity_inst_t
>& cm
,
609 map
<client_t
,uint64_t>& sseqmap
,
613 * FIXME: need to carefully consider the race conditions between a
614 * client trying to close a session and an MDS doing an import
615 * trying to force open a session...
617 dout(10) << "finish_force_open_sessions on " << cm
.size() << " clients,"
618 << " initial v " << mds
->sessionmap
.get_version() << dendl
;
621 int sessions_inserted
= 0;
622 for (map
<client_t
,entity_inst_t
>::iterator p
= cm
.begin(); p
!= cm
.end(); ++p
) {
625 Session
*session
= mds
->sessionmap
.get_session(p
->second
.name
);
628 if (sseqmap
.count(p
->first
)) {
629 uint64_t sseq
= sseqmap
[p
->first
];
630 if (session
->get_state_seq() != sseq
) {
631 dout(10) << "force_open_sessions skipping changed " << session
->info
.inst
<< dendl
;
633 dout(10) << "force_open_sessions opened " << session
->info
.inst
<< dendl
;
634 mds
->sessionmap
.set_state(session
, Session::STATE_OPEN
);
635 mds
->sessionmap
.touch_session(session
);
636 mds
->send_message_client(new MClientSession(CEPH_SESSION_OPEN
), session
);
637 if (mdcache
->is_readonly())
638 mds
->send_message_client(new MClientSession(CEPH_SESSION_FORCE_RO
), session
);
641 dout(10) << "force_open_sessions skipping already-open " << session
->info
.inst
<< dendl
;
642 assert(session
->is_open() || session
->is_stale());
646 session
->dec_importing();
649 mds
->sessionmap
.mark_dirty(session
);
652 dout(10) << __func__
<< ": final v " << mds
->sessionmap
.get_version() << dendl
;
655 class C_MDS_TerminatedSessions
: public ServerContext
{
656 void finish(int r
) override
{
657 server
->terminating_sessions
= false;
660 explicit C_MDS_TerminatedSessions(Server
*s
) : ServerContext(s
) {}
663 void Server::terminate_sessions()
665 dout(2) << "terminate_sessions" << dendl
;
667 terminating_sessions
= true;
669 // kill them off. clients will retry etc.
670 set
<Session
*> sessions
;
671 mds
->sessionmap
.get_client_session_set(sessions
);
672 for (set
<Session
*>::const_iterator p
= sessions
.begin();
675 Session
*session
= *p
;
676 if (session
->is_closing() ||
677 session
->is_killing() ||
678 session
->is_closed())
680 journal_close_session(session
, Session::STATE_CLOSING
, NULL
);
683 mdlog
->wait_for_safe(new C_MDS_TerminatedSessions(this));
687 void Server::find_idle_sessions()
689 dout(10) << "find_idle_sessions. laggy until " << mds
->get_laggy_until() << dendl
;
692 // (caps go stale, lease die)
693 utime_t now
= ceph_clock_now();
694 utime_t cutoff
= now
;
695 cutoff
-= g_conf
->mds_session_timeout
;
697 Session
*session
= mds
->sessionmap
.get_oldest_session(Session::STATE_OPEN
);
699 dout(20) << "laggiest active session is " << session
->info
.inst
<< dendl
;
700 if (session
->last_cap_renew
>= cutoff
) {
701 dout(20) << "laggiest active session is " << session
->info
.inst
<< " and sufficiently new ("
702 << session
->last_cap_renew
<< ")" << dendl
;
706 dout(10) << "new stale session " << session
->info
.inst
<< " last " << session
->last_cap_renew
<< dendl
;
707 mds
->sessionmap
.set_state(session
, Session::STATE_STALE
);
708 mds
->locker
->revoke_stale_caps(session
);
709 mds
->locker
->remove_stale_leases(session
);
710 mds
->send_message_client(new MClientSession(CEPH_SESSION_STALE
, session
->get_push_seq()), session
);
711 finish_flush_session(session
, session
->get_push_seq());
716 cutoff
-= g_conf
->mds_session_autoclose
;
718 // don't kick clients if we've been laggy
719 if (mds
->get_laggy_until() > cutoff
) {
720 dout(10) << " laggy_until " << mds
->get_laggy_until() << " > cutoff " << cutoff
721 << ", not kicking any clients to be safe" << dendl
;
725 if (mds
->sessionmap
.get_sessions().size() == 1 &&
726 mds
->mdsmap
->get_num_in_mds() == 1) {
727 dout(20) << "not evicting a slow client, because there is only one"
732 // Collect a list of sessions exceeding the autoclose threshold
733 std::vector
<Session
*> to_evict
;
734 const auto sessions_p
= mds
->sessionmap
.by_state
.find(Session::STATE_STALE
);
735 if (sessions_p
== mds
->sessionmap
.by_state
.end() || sessions_p
->second
->empty()) {
738 const auto &stale_sessions
= sessions_p
->second
;
739 assert(stale_sessions
!= nullptr);
741 for (const auto &session
: *stale_sessions
) {
742 if (session
->is_importing()) {
743 dout(10) << "stopping at importing session " << session
->info
.inst
<< dendl
;
746 assert(session
->is_stale());
747 if (session
->last_cap_renew
>= cutoff
) {
748 dout(20) << "oldest stale session is " << session
->info
.inst
<< " and sufficiently new ("
749 << session
->last_cap_renew
<< ")" << dendl
;
753 to_evict
.push_back(session
);
756 for (const auto &session
: to_evict
) {
758 age
-= session
->last_cap_renew
;
759 mds
->clog
->warn() << "evicting unresponsive client " << *session
760 << ", after " << age
<< " seconds";
761 dout(10) << "autoclosing stale session " << session
->info
.inst
<< " last "
762 << session
->last_cap_renew
<< dendl
;
764 if (g_conf
->mds_session_blacklist_on_timeout
) {
765 std::stringstream ss
;
766 mds
->evict_client(session
->info
.inst
.name
.num(), false, true,
769 kill_session(session
, NULL
);
775 * XXX bump in the interface here, not using an MDSInternalContextBase here
776 * because all the callers right now happen to use a SaferCond
778 void Server::kill_session(Session
*session
, Context
*on_safe
)
780 assert(mds
->mds_lock
.is_locked_by_me());
782 if ((session
->is_opening() ||
783 session
->is_open() ||
784 session
->is_stale()) &&
785 !session
->is_importing()) {
786 dout(10) << "kill_session " << session
<< dendl
;
787 journal_close_session(session
, Session::STATE_KILLING
, on_safe
);
789 dout(10) << "kill_session importing or already closing/killing " << session
<< dendl
;
790 assert(session
->is_closing() ||
791 session
->is_closed() ||
792 session
->is_killing() ||
793 session
->is_importing());
795 on_safe
->complete(0);
800 size_t Server::apply_blacklist(const std::set
<entity_addr_t
> &blacklist
)
802 std::list
<Session
*> victims
;
803 const auto sessions
= mds
->sessionmap
.get_sessions();
804 for (const auto p
: sessions
) {
805 if (!p
.first
.is_client()) {
806 // Do not apply OSDMap blacklist to MDS daemons, we find out
807 // about their death via MDSMap.
811 Session
*s
= p
.second
;
812 if (blacklist
.count(s
->info
.inst
.addr
)) {
813 victims
.push_back(s
);
817 for (const auto s
: victims
) {
818 kill_session(s
, nullptr);
821 dout(10) << "apply_blacklist: killed " << victims
.size() << dendl
;
823 return victims
.size();
826 void Server::journal_close_session(Session
*session
, int state
, Context
*on_safe
)
828 uint64_t sseq
= mds
->sessionmap
.set_state(session
, state
);
829 version_t pv
= mds
->sessionmap
.mark_projected(session
);
832 // release alloc and pending-alloc inos for this session
833 // and wipe out session state, in case the session close aborts for some reason
834 interval_set
<inodeno_t
> both
;
835 both
.insert(session
->info
.prealloc_inos
);
836 both
.insert(session
->pending_prealloc_inos
);
838 mds
->inotable
->project_release_ids(both
);
839 piv
= mds
->inotable
->get_projected_version();
843 mdlog
->start_submit_entry(new ESession(session
->info
.inst
, false, pv
, both
, piv
),
844 new C_MDS_session_finish(this, session
, sseq
, false, pv
, both
, piv
, on_safe
));
847 // clean up requests, too
848 elist
<MDRequestImpl
*>::iterator p
=
849 session
->requests
.begin(member_offset(MDRequestImpl
,
850 item_session_request
));
852 MDRequestRef mdr
= mdcache
->request_get((*p
)->reqid
);
854 mdcache
->request_kill(mdr
);
857 finish_flush_session(session
, session
->get_push_seq());
860 void Server::reconnect_clients(MDSInternalContext
*reconnect_done_
)
862 reconnect_done
= reconnect_done_
;
863 mds
->sessionmap
.get_client_set(client_reconnect_gather
);
865 if (client_reconnect_gather
.empty()) {
866 dout(7) << "reconnect_clients -- no sessions, doing nothing." << dendl
;
867 reconnect_gather_finish();
871 // clients will get the mdsmap and discover we're reconnecting via the monitor.
873 reconnect_start
= ceph_clock_now();
874 dout(1) << "reconnect_clients -- " << client_reconnect_gather
.size() << " sessions" << dendl
;
875 mds
->sessionmap
.dump();
878 /* This function DOES put the passed message before returning*/
879 void Server::handle_client_reconnect(MClientReconnect
*m
)
881 dout(7) << "handle_client_reconnect " << m
->get_source() << dendl
;
882 client_t from
= m
->get_source().num();
883 Session
*session
= get_session(m
);
886 if (!mds
->is_reconnect() && mds
->get_want_state() == CEPH_MDS_STATE_RECONNECT
) {
887 dout(10) << " we're almost in reconnect state (mdsmap delivery race?); waiting" << dendl
;
888 mds
->wait_for_reconnect(new C_MDS_RetryMessage(mds
, m
));
892 utime_t delay
= ceph_clock_now();
893 delay
-= reconnect_start
;
894 dout(10) << " reconnect_start " << reconnect_start
<< " delay " << delay
<< dendl
;
897 if (!mds
->is_reconnect()) {
898 // XXX maybe in the future we can do better than this?
899 dout(1) << " no longer in reconnect state, ignoring reconnect, sending close" << dendl
;
900 mds
->clog
->info() << "denied reconnect attempt (mds is "
901 << ceph_mds_state_name(mds
->get_state())
902 << ") from " << m
->get_source_inst()
903 << " after " << delay
<< " (allowed interval " << g_conf
->mds_reconnect_timeout
<< ")";
905 } else if (session
->is_closed()) {
906 dout(1) << " session is closed, ignoring reconnect, sending close" << dendl
;
907 mds
->clog
->info() << "denied reconnect attempt (mds is "
908 << ceph_mds_state_name(mds
->get_state())
909 << ") from " << m
->get_source_inst() << " (session is closed)";
911 } else if (mdcache
->is_readonly()) {
912 dout(1) << " read-only FS, ignoring reconnect, sending close" << dendl
;
913 mds
->clog
->info() << "denied reconnect attempt (mds is read-only)";
918 m
->get_connection()->send_message(new MClientSession(CEPH_SESSION_CLOSE
));
923 // notify client of success with an OPEN
924 m
->get_connection()->send_message(new MClientSession(CEPH_SESSION_OPEN
));
925 session
->last_cap_renew
= ceph_clock_now();
926 mds
->clog
->debug() << "reconnect by " << session
->info
.inst
<< " after " << delay
;
929 for (vector
<ceph_mds_snaprealm_reconnect
>::iterator p
= m
->realms
.begin();
930 p
!= m
->realms
.end();
932 CInode
*in
= mdcache
->get_inode(inodeno_t(p
->ino
));
933 if (in
&& in
->state_test(CInode::STATE_PURGING
))
936 assert(in
->snaprealm
);
937 if (in
->snaprealm
->have_past_parents_open()) {
938 dout(15) << "open snaprealm (w/ past parents) on " << *in
<< dendl
;
939 mdcache
->finish_snaprealm_reconnect(from
, in
->snaprealm
, snapid_t(p
->seq
));
941 dout(15) << "open snaprealm (w/o past parents) on " << *in
<< dendl
;
942 mdcache
->add_reconnected_snaprealm(from
, inodeno_t(p
->ino
), snapid_t(p
->seq
));
945 dout(15) << "open snaprealm (w/o inode) on " << inodeno_t(p
->ino
)
946 << " seq " << p
->seq
<< dendl
;
947 mdcache
->add_reconnected_snaprealm(from
, inodeno_t(p
->ino
), snapid_t(p
->seq
));
952 for (map
<inodeno_t
, cap_reconnect_t
>::iterator p
= m
->caps
.begin();
955 // make sure our last_cap_id is MAX over all issued caps
956 if (p
->second
.capinfo
.cap_id
> mdcache
->last_cap_id
)
957 mdcache
->last_cap_id
= p
->second
.capinfo
.cap_id
;
959 CInode
*in
= mdcache
->get_inode(p
->first
);
960 if (in
&& in
->state_test(CInode::STATE_PURGING
))
962 if (in
&& in
->is_auth()) {
963 // we recovered it, and it's ours. take note.
964 dout(15) << "open cap realm " << inodeno_t(p
->second
.capinfo
.snaprealm
)
965 << " on " << *in
<< dendl
;
966 in
->reconnect_cap(from
, p
->second
, session
);
967 mdcache
->add_reconnected_cap(from
, p
->first
, p
->second
);
968 recover_filelocks(in
, p
->second
.flockbl
, m
->get_orig_source().num());
972 if (in
&& !in
->is_auth()) {
974 dout(10) << "non-auth " << *in
<< ", will pass off to authority" << dendl
;
975 // add to cap export list.
976 p
->second
.path
.clear(); // we don't need path
977 mdcache
->rejoin_export_caps(p
->first
, from
, p
->second
,
978 in
->authority().first
);
980 // don't know if the inode is mine
981 dout(10) << "missing ino " << p
->first
<< ", will load later" << dendl
;
982 p
->second
.path
.clear(); // we don't need path
983 mdcache
->rejoin_recovered_caps(p
->first
, from
, p
->second
, MDS_RANK_NONE
);
987 // remove from gather set
988 client_reconnect_gather
.erase(from
);
989 if (client_reconnect_gather
.empty())
990 reconnect_gather_finish();
997 void Server::reconnect_gather_finish()
999 dout(7) << "reconnect_gather_finish. failed on " << failed_reconnects
<< " clients" << dendl
;
1000 assert(reconnect_done
);
1001 reconnect_done
->complete(0);
1002 reconnect_done
= NULL
;
1005 void Server::reconnect_tick()
1007 if (reconnect_evicting
) {
1008 dout(4) << "reconnect_tick: waiting for evictions" << dendl
;
1012 utime_t reconnect_end
= reconnect_start
;
1013 reconnect_end
+= g_conf
->mds_reconnect_timeout
;
1014 if (ceph_clock_now() >= reconnect_end
&&
1015 !client_reconnect_gather
.empty()) {
1016 dout(10) << "reconnect timed out" << dendl
;
1018 // If we're doing blacklist evictions, use this to wait for them before
1019 // proceeding to reconnect_gather_finish
1020 MDSGatherBuilder
gather(g_ceph_context
);
1022 for (set
<client_t
>::iterator p
= client_reconnect_gather
.begin();
1023 p
!= client_reconnect_gather
.end();
1025 Session
*session
= mds
->sessionmap
.get_session(entity_name_t::CLIENT(p
->v
));
1027 dout(1) << "reconnect gave up on " << session
->info
.inst
<< dendl
;
1029 mds
->clog
->warn() << "evicting unresponsive client " << *session
1030 << ", after waiting " << g_conf
->mds_reconnect_timeout
1031 << " seconds during MDS startup";
1033 if (g_conf
->mds_session_blacklist_on_timeout
) {
1034 std::stringstream ss
;
1035 mds
->evict_client(session
->info
.inst
.name
.num(), false, true, ss
,
1038 kill_session(session
, NULL
);
1041 failed_reconnects
++;
1043 client_reconnect_gather
.clear();
1045 if (gather
.has_subs()) {
1046 dout(1) << "reconnect will complete once clients are evicted" << dendl
;
1047 gather
.set_finisher(new MDSInternalContextWrapper(mds
, new FunctionContext(
1048 [this](int r
){reconnect_gather_finish();})));
1050 reconnect_evicting
= true;
1052 reconnect_gather_finish();
1057 void Server::recover_filelocks(CInode
*in
, bufferlist locks
, int64_t client
)
1059 if (!locks
.length()) return;
1062 bufferlist::iterator p
= locks
.begin();
1063 ::decode(numlocks
, p
);
1064 for (int i
= 0; i
< numlocks
; ++i
) {
1066 lock
.client
= client
;
1067 in
->get_fcntl_lock_state()->held_locks
.insert(pair
<uint64_t, ceph_filelock
>(lock
.start
, lock
));
1068 ++in
->get_fcntl_lock_state()->client_held_lock_counts
[client
];
1070 ::decode(numlocks
, p
);
1071 for (int i
= 0; i
< numlocks
; ++i
) {
1073 lock
.client
= client
;
1074 in
->get_flock_lock_state()->held_locks
.insert(pair
<uint64_t, ceph_filelock
> (lock
.start
, lock
));
1075 ++in
->get_flock_lock_state()->client_held_lock_counts
[client
];
1081 * Call this when the MDCache is oversized, to send requests to the clients
1082 * to trim some caps, and consequently unpin some inodes in the MDCache so
1083 * that it can trim too.
1085 void Server::recall_client_state(void)
1087 /* try to recall at least 80% of all caps */
1088 uint64_t max_caps_per_client
= (Capability::count() * .8);
1089 uint64_t min_caps_per_client
= 100;
1090 /* unless this ratio is smaller: */
1091 /* ratio: determine the amount of caps to recall from each client. Use
1092 * percentage full over the cache reservation. Cap the ratio at 80% of client
1094 double ratio
= 1.0-fmin(0.80, mdcache
->cache_toofull_ratio());
1096 dout(10) << "recall_client_state " << ratio
1097 << ", caps per client " << min_caps_per_client
<< "-" << max_caps_per_client
1100 set
<Session
*> sessions
;
1101 mds
->sessionmap
.get_client_session_set(sessions
);
1102 for (auto &session
: sessions
) {
1103 if (!session
->is_open() ||
1104 !session
->info
.inst
.name
.is_client())
1107 dout(10) << " session " << session
->info
.inst
1108 << " caps " << session
->caps
.size()
1109 << ", leases " << session
->leases
.size()
1112 if (session
->caps
.size() > min_caps_per_client
) {
1113 uint64_t newlim
= MIN((session
->caps
.size() * ratio
), max_caps_per_client
);
1114 if (session
->caps
.size() > newlim
) {
1115 MClientSession
*m
= new MClientSession(CEPH_SESSION_RECALL_STATE
);
1116 m
->head
.max_caps
= newlim
;
1117 mds
->send_message_client(m
, session
);
1118 session
->notify_recall_sent(newlim
);
1124 void Server::force_clients_readonly()
1126 dout(10) << "force_clients_readonly" << dendl
;
1127 set
<Session
*> sessions
;
1128 mds
->sessionmap
.get_client_session_set(sessions
);
1129 for (set
<Session
*>::const_iterator p
= sessions
.begin();
1130 p
!= sessions
.end();
1132 Session
*session
= *p
;
1133 if (!session
->info
.inst
.name
.is_client() ||
1134 !(session
->is_open() || session
->is_stale()))
1136 mds
->send_message_client(new MClientSession(CEPH_SESSION_FORCE_RO
), session
);
1141 * some generic stuff for finishing off requests
1143 void Server::journal_and_reply(MDRequestRef
& mdr
, CInode
*in
, CDentry
*dn
, LogEvent
*le
, MDSLogContextBase
*fin
)
1145 dout(10) << "journal_and_reply tracei " << in
<< " tracedn " << dn
<< dendl
;
1146 assert(!mdr
->has_completed
);
1148 // note trace items for eventual reply.
1157 early_reply(mdr
, in
, dn
);
1159 mdr
->committing
= true;
1160 submit_mdlog_entry(le
, fin
, mdr
, __func__
);
1162 if (mdr
->client_request
&& mdr
->client_request
->is_queued_for_replay()) {
1163 if (mds
->queue_one_replay()) {
1164 dout(10) << " queued next replay op" << dendl
;
1166 dout(10) << " journaled last replay op, flushing" << dendl
;
1169 } else if (mdr
->did_early_reply
)
1170 mds
->locker
->drop_rdlocks(mdr
.get());
1175 void Server::submit_mdlog_entry(LogEvent
*le
, MDSLogContextBase
*fin
, MDRequestRef
& mdr
,
1179 string
event_str("submit entry: ");
1181 mdr
->mark_event_string(event_str
);
1183 mdlog
->submit_entry(le
, fin
);
1187 * send response built from mdr contents and error code; clean up mdr
1189 void Server::respond_to_request(MDRequestRef
& mdr
, int r
)
1191 if (mdr
->client_request
) {
1192 reply_client_request(mdr
, new MClientReply(mdr
->client_request
, r
));
1194 // add here to avoid counting ops multiple times (e.g., locks, loading)
1195 switch(mdr
->client_request
->get_op()) {
1196 case CEPH_MDS_OP_LOOKUPHASH
:
1197 logger
->inc(l_mdss_req_lookuphash
);
1199 case CEPH_MDS_OP_LOOKUPINO
:
1200 logger
->inc(l_mdss_req_lookupino
);
1202 case CEPH_MDS_OP_LOOKUPPARENT
:
1203 logger
->inc(l_mdss_req_lookupparent
);
1205 case CEPH_MDS_OP_LOOKUPNAME
:
1206 logger
->inc(l_mdss_req_lookupname
);
1208 case CEPH_MDS_OP_LOOKUP
:
1209 logger
->inc(l_mdss_req_lookup
);
1211 case CEPH_MDS_OP_LOOKUPSNAP
:
1212 logger
->inc(l_mdss_req_lookupsnap
);
1214 case CEPH_MDS_OP_GETATTR
:
1215 logger
->inc(l_mdss_req_getattr
);
1217 case CEPH_MDS_OP_SETATTR
:
1218 logger
->inc(l_mdss_req_setattr
);
1220 case CEPH_MDS_OP_SETLAYOUT
:
1221 logger
->inc(l_mdss_req_setlayout
);
1223 case CEPH_MDS_OP_SETDIRLAYOUT
:
1224 logger
->inc(l_mdss_req_setdirlayout
);
1226 case CEPH_MDS_OP_SETXATTR
:
1227 logger
->inc(l_mdss_req_setxattr
);
1229 case CEPH_MDS_OP_RMXATTR
:
1230 logger
->inc(l_mdss_req_rmxattr
);
1232 case CEPH_MDS_OP_READDIR
:
1233 logger
->inc(l_mdss_req_readdir
);
1235 case CEPH_MDS_OP_SETFILELOCK
:
1236 logger
->inc(l_mdss_req_setfilelock
);
1238 case CEPH_MDS_OP_GETFILELOCK
:
1239 logger
->inc(l_mdss_req_getfilelock
);
1241 case CEPH_MDS_OP_CREATE
:
1242 logger
->inc(l_mdss_req_create
);
1243 case CEPH_MDS_OP_OPEN
:
1244 logger
->inc(l_mdss_req_open
);
1246 case CEPH_MDS_OP_MKNOD
:
1247 logger
->inc(l_mdss_req_mknod
);
1249 case CEPH_MDS_OP_LINK
:
1250 logger
->inc(l_mdss_req_link
);
1252 case CEPH_MDS_OP_UNLINK
:
1253 logger
->inc(l_mdss_req_unlink
);
1255 case CEPH_MDS_OP_RMDIR
:
1256 logger
->inc(l_mdss_req_rmdir
);
1258 case CEPH_MDS_OP_RENAME
:
1259 logger
->inc(l_mdss_req_rename
);
1261 case CEPH_MDS_OP_MKDIR
:
1262 logger
->inc(l_mdss_req_mkdir
);
1264 case CEPH_MDS_OP_SYMLINK
:
1265 logger
->inc(l_mdss_req_symlink
);
1267 case CEPH_MDS_OP_LSSNAP
:
1268 logger
->inc(l_mdss_req_lssnap
);
1270 case CEPH_MDS_OP_MKSNAP
:
1271 logger
->inc(l_mdss_req_mksnap
);
1273 case CEPH_MDS_OP_RMSNAP
:
1274 logger
->inc(l_mdss_req_rmsnap
);
1276 case CEPH_MDS_OP_RENAMESNAP
:
1277 logger
->inc(l_mdss_req_renamesnap
);
1280 } else if (mdr
->internal_op
> -1) {
1281 dout(10) << "respond_to_request on internal request " << mdr
<< dendl
;
1282 if (!mdr
->internal_op_finish
)
1283 assert(0 == "trying to respond to internal op without finisher");
1284 mdr
->internal_op_finish
->complete(r
);
1285 mdcache
->request_finish(mdr
);
1289 void Server::early_reply(MDRequestRef
& mdr
, CInode
*tracei
, CDentry
*tracedn
)
1291 if (!g_conf
->mds_early_reply
)
1294 if (mdr
->has_more() && mdr
->more()->has_journaled_slaves
) {
1295 dout(10) << "early_reply - there are journaled slaves, not allowed." << dendl
;
1299 if (mdr
->alloc_ino
) {
1300 dout(10) << "early_reply - allocated ino, not allowed" << dendl
;
1304 MClientRequest
*req
= mdr
->client_request
;
1305 entity_inst_t client_inst
= req
->get_source_inst();
1306 if (client_inst
.name
.is_mds())
1309 if (req
->is_replay()) {
1310 dout(10) << " no early reply on replay op" << dendl
;
1315 MClientReply
*reply
= new MClientReply(req
, 0);
1316 reply
->set_unsafe();
1318 // mark xlocks "done", indicating that we are exposing uncommitted changes.
1320 //_rename_finish() does not send dentry link/unlink message to replicas.
1321 // so do not set xlocks on dentries "done", the xlocks prevent dentries
1322 // that have projected linkages from getting new replica.
1323 mds
->locker
->set_xlocks_done(mdr
.get(), req
->get_op() == CEPH_MDS_OP_RENAME
);
1325 dout(10) << "early_reply " << reply
->get_result()
1326 << " (" << cpp_strerror(reply
->get_result())
1327 << ") " << *req
<< dendl
;
1329 if (tracei
|| tracedn
) {
1331 mdr
->cap_releases
.erase(tracei
->vino());
1333 mdr
->cap_releases
.erase(tracedn
->get_dir()->get_inode()->vino());
1335 set_trace_dist(mdr
->session
, reply
, tracei
, tracedn
, mdr
->snapid
,
1336 req
->get_dentry_wanted(), mdr
);
1339 reply
->set_extra_bl(mdr
->reply_extra_bl
);
1340 req
->get_connection()->send_message(reply
);
1342 mdr
->did_early_reply
= true;
1344 mds
->logger
->inc(l_mds_reply
);
1345 utime_t lat
= ceph_clock_now() - req
->get_recv_stamp();
1346 mds
->logger
->tinc(l_mds_reply_latency
, lat
);
1347 dout(20) << "lat " << lat
<< dendl
;
1349 mdr
->mark_event("early_replied");
1354 * include a trace to tracei
1357 void Server::reply_client_request(MDRequestRef
& mdr
, MClientReply
*reply
)
1360 MClientRequest
*req
= mdr
->client_request
;
1362 dout(7) << "reply_client_request " << reply
->get_result()
1363 << " (" << cpp_strerror(reply
->get_result())
1364 << ") " << *req
<< dendl
;
1366 mdr
->mark_event("replying");
1368 Session
*session
= mdr
->session
;
1370 // note successful request in session map?
1372 // setfilelock requests are special, they only modify states in MDS memory.
1373 // The states get lost when MDS fails. If Client re-send a completed
1374 // setfilelock request, it means that client did not receive corresponding
1375 // setfilelock reply. So MDS should re-execute the setfilelock request.
1376 if (req
->may_write() && req
->get_op() != CEPH_MDS_OP_SETFILELOCK
&&
1377 reply
->get_result() == 0 && session
) {
1378 inodeno_t created
= mdr
->alloc_ino
? mdr
->alloc_ino
: mdr
->used_prealloc_ino
;
1379 session
->add_completed_request(mdr
->reqid
.tid
, created
);
1381 mdr
->ls
->touched_sessions
.insert(session
->info
.inst
.name
);
1385 // give any preallocated inos to the session
1386 apply_allocated_inos(mdr
, session
);
1388 // get tracei/tracedn from mdr?
1389 snapid_t snapid
= mdr
->snapid
;
1390 CInode
*tracei
= mdr
->tracei
;
1391 CDentry
*tracedn
= mdr
->tracedn
;
1393 bool is_replay
= mdr
->client_request
->is_replay();
1394 bool did_early_reply
= mdr
->did_early_reply
;
1395 entity_inst_t client_inst
= req
->get_source_inst();
1396 int dentry_wanted
= req
->get_dentry_wanted();
1398 if (!did_early_reply
&& !is_replay
) {
1400 mds
->logger
->inc(l_mds_reply
);
1401 utime_t lat
= ceph_clock_now() - mdr
->client_request
->get_recv_stamp();
1402 mds
->logger
->tinc(l_mds_reply_latency
, lat
);
1403 dout(20) << "lat " << lat
<< dendl
;
1406 mdr
->cap_releases
.erase(tracei
->vino());
1408 mdr
->cap_releases
.erase(tracedn
->get_dir()->get_inode()->vino());
1411 // drop non-rdlocks before replying, so that we can issue leases
1412 mdcache
->request_drop_non_rdlocks(mdr
);
1415 if (client_inst
.name
.is_mds() || !session
) {
1416 reply
->put(); // mds doesn't need a reply
1420 if (!did_early_reply
&& // don't issue leases if we sent an earlier reply already
1421 (tracei
|| tracedn
)) {
1424 mdcache
->try_reconnect_cap(tracei
, session
);
1426 // include metadata in reply
1427 set_trace_dist(session
, reply
, tracei
, tracedn
,
1428 snapid
, dentry_wanted
,
1433 // We can set the extra bl unconditionally: if it's already been sent in the
1434 // early_reply, set_extra_bl will have claimed it and reply_extra_bl is empty
1435 reply
->set_extra_bl(mdr
->reply_extra_bl
);
1437 reply
->set_mdsmap_epoch(mds
->mdsmap
->get_epoch());
1438 req
->get_connection()->send_message(reply
);
1441 if (req
->is_queued_for_replay() &&
1442 (mdr
->has_completed
|| reply
->get_result() < 0)) {
1443 if (reply
->get_result() < 0) {
1444 int r
= reply
->get_result();
1445 derr
<< "reply_client_request: failed to replay " << *req
1446 << " error " << r
<< " (" << cpp_strerror(r
) << ")" << dendl
;
1447 mds
->clog
->warn() << "failed to replay " << req
->get_reqid() << " error " << r
;
1449 mds
->queue_one_replay();
1453 mdcache
->request_finish(mdr
);
1455 // take a closer look at tracei, if it happens to be a remote link
1458 tracedn
->get_projected_linkage()->is_remote()) {
1459 mdcache
->eval_remote(tracedn
);
1464 void Server::encode_empty_dirstat(bufferlist
& bl
)
1466 static DirStat empty
;
1470 void Server::encode_infinite_lease(bufferlist
& bl
)
1477 dout(20) << "encode_infinite_lease " << e
<< dendl
;
1480 void Server::encode_null_lease(bufferlist
& bl
)
1487 dout(20) << "encode_null_lease " << e
<< dendl
;
1492 * pass inode OR dentry (not both, or we may get confused)
1494 * trace is in reverse order (i.e. root inode comes last)
1496 void Server::set_trace_dist(Session
*session
, MClientReply
*reply
,
1497 CInode
*in
, CDentry
*dn
,
1502 // skip doing this for debugging purposes?
1503 if (g_conf
->mds_inject_traceless_reply_probability
&&
1504 mdr
->ls
&& !mdr
->o_trunc
&&
1505 (rand() % 10000 < g_conf
->mds_inject_traceless_reply_probability
* 10000.0)) {
1506 dout(5) << "deliberately skipping trace for " << *reply
<< dendl
;
1510 // inode, dentry, dir, ..., inode
1512 mds_rank_t whoami
= mds
->get_nodeid();
1513 client_t client
= session
->get_client();
1514 utime_t now
= ceph_clock_now();
1516 dout(20) << "set_trace_dist snapid " << snapid
<< dendl
;
1518 //assert((bool)dn == (bool)dentry_wanted); // not true for snapshot lookups
1521 if (snapid
== CEPH_NOSNAP
) {
1524 realm
= in
->find_snaprealm();
1526 realm
= dn
->get_dir()->get_inode()->find_snaprealm();
1527 reply
->snapbl
= realm
->get_snap_trace();
1528 dout(10) << "set_trace_dist snaprealm " << *realm
<< " len=" << reply
->snapbl
.length() << dendl
;
1533 reply
->head
.is_dentry
= 1;
1534 CDir
*dir
= dn
->get_dir();
1535 CInode
*diri
= dir
->get_inode();
1537 diri
->encode_inodestat(bl
, session
, NULL
, snapid
);
1538 dout(20) << "set_trace_dist added diri " << *diri
<< dendl
;
1540 #ifdef MDS_VERIFY_FRAGSTAT
1541 if (dir
->is_complete())
1542 dir
->verify_fragstat();
1544 dir
->encode_dirstat(bl
, whoami
);
1545 dout(20) << "set_trace_dist added dir " << *dir
<< dendl
;
1547 ::encode(dn
->get_name(), bl
);
1548 if (snapid
== CEPH_NOSNAP
)
1549 mds
->locker
->issue_client_lease(dn
, client
, bl
, now
, session
);
1551 encode_null_lease(bl
);
1552 dout(20) << "set_trace_dist added dn " << snapid
<< " " << *dn
<< dendl
;
1554 reply
->head
.is_dentry
= 0;
1558 in
->encode_inodestat(bl
, session
, NULL
, snapid
, 0, mdr
->getattr_caps
);
1559 dout(20) << "set_trace_dist added in " << *in
<< dendl
;
1560 reply
->head
.is_target
= 1;
1562 reply
->head
.is_target
= 0;
1564 reply
->set_trace(bl
);
1571 * process a client request
1572 * This function DOES put the passed message before returning
1574 void Server::handle_client_request(MClientRequest
*req
)
1576 dout(4) << "handle_client_request " << *req
<< dendl
;
1579 mds
->logger
->inc(l_mds_request
);
1581 logger
->inc(l_mdss_handle_client_request
);
1583 if (!mdcache
->is_open()) {
1584 dout(5) << "waiting for root" << dendl
;
1585 mdcache
->wait_for_open(new C_MDS_RetryMessage(mds
, req
));
1590 Session
*session
= 0;
1591 if (req
->get_source().is_client()) {
1592 session
= get_session(req
);
1594 dout(5) << "no session for " << req
->get_source() << ", dropping" << dendl
;
1595 } else if (session
->is_closed() ||
1596 session
->is_closing() ||
1597 session
->is_killing()) {
1598 dout(5) << "session closed|closing|killing, dropping" << dendl
;
1602 if (req
->is_queued_for_replay())
1603 mds
->queue_one_replay();
1610 if (req
->get_mdsmap_epoch() < mds
->mdsmap
->get_epoch()) {
1611 // send it? hrm, this isn't ideal; they may get a lot of copies if
1612 // they have a high request rate.
1615 // completed request?
1616 bool has_completed
= false;
1617 if (req
->is_replay() || req
->get_retry_attempt()) {
1620 if (session
->have_completed_request(req
->get_reqid().tid
, &created
)) {
1621 has_completed
= true;
1622 // Don't send traceless reply if the completed request has created
1623 // new inode. Treat the request as lookup request instead.
1624 if (req
->is_replay() ||
1625 ((created
== inodeno_t() || !mds
->is_clientreplay()) &&
1626 req
->get_op() != CEPH_MDS_OP_OPEN
&&
1627 req
->get_op() != CEPH_MDS_OP_CREATE
)) {
1628 dout(5) << "already completed " << req
->get_reqid() << dendl
;
1629 MClientReply
*reply
= new MClientReply(req
, 0);
1630 if (created
!= inodeno_t()) {
1632 ::encode(created
, extra
);
1633 reply
->set_extra_bl(extra
);
1635 req
->get_connection()->send_message(reply
);
1637 if (req
->is_queued_for_replay())
1638 mds
->queue_one_replay();
1643 if (req
->get_op() != CEPH_MDS_OP_OPEN
&&
1644 req
->get_op() != CEPH_MDS_OP_CREATE
) {
1645 dout(10) << " completed request which created new inode " << created
1646 << ", convert it to lookup request" << dendl
;
1647 req
->head
.op
= req
->get_dentry_wanted() ? CEPH_MDS_OP_LOOKUP
: CEPH_MDS_OP_GETATTR
;
1648 req
->head
.args
.getattr
.mask
= CEPH_STAT_CAP_INODE_ALL
;
1653 // trim completed_request list
1654 if (req
->get_oldest_client_tid() > 0) {
1655 dout(15) << " oldest_client_tid=" << req
->get_oldest_client_tid() << dendl
;
1657 if (session
->trim_completed_requests(req
->get_oldest_client_tid())) {
1658 // Sessions 'completed_requests' was dirtied, mark it to be
1659 // potentially flushed at segment expiry.
1660 mdlog
->get_current_segment()->touched_sessions
.insert(session
->info
.inst
.name
);
1662 if (session
->get_num_trim_requests_warnings() > 0 &&
1663 session
->get_num_completed_requests() * 2 < g_conf
->mds_max_completed_requests
)
1664 session
->reset_num_trim_requests_warnings();
1666 if (session
->get_num_completed_requests() >=
1667 (g_conf
->mds_max_completed_requests
<< session
->get_num_trim_requests_warnings())) {
1668 session
->inc_num_trim_requests_warnings();
1670 ss
<< "client." << session
->get_client() << " does not advance its oldest_client_tid ("
1671 << req
->get_oldest_client_tid() << "), "
1672 << session
->get_num_completed_requests()
1673 << " completed requests recorded in session\n";
1674 mds
->clog
->warn() << ss
.str();
1675 dout(20) << __func__
<< " " << ss
.str() << dendl
;
1680 // register + dispatch
1681 MDRequestRef mdr
= mdcache
->request_start(req
);
1686 mdr
->session
= session
;
1687 session
->requests
.push_back(&mdr
->item_session_request
);
1691 mdr
->has_completed
= true;
1693 // process embedded cap releases?
1694 // (only if NOT replay!)
1695 if (!req
->releases
.empty() && req
->get_source().is_client() && !req
->is_replay()) {
1696 client_t client
= req
->get_source().num();
1697 for (vector
<MClientRequest::Release
>::iterator p
= req
->releases
.begin();
1698 p
!= req
->releases
.end();
1700 mds
->locker
->process_request_cap_release(mdr
, client
, p
->item
, p
->dname
);
1701 req
->releases
.clear();
1704 dispatch_client_request(mdr
);
1708 void Server::handle_osd_map()
1710 /* Note that we check the OSDMAP_FULL flag directly rather than
1711 * using osdmap_full_flag(), because we want to know "is the flag set"
1712 * rather than "does the flag apply to us?" */
1713 mds
->objecter
->with_osdmap([this](const OSDMap
& o
) {
1714 is_full
= o
.test_flag(CEPH_OSDMAP_FULL
);
1715 dout(7) << __func__
<< ": full = " << is_full
<< " epoch = "
1716 << o
.get_epoch() << dendl
;
1720 void Server::dispatch_client_request(MDRequestRef
& mdr
)
1722 // we shouldn't be waiting on anyone.
1723 assert(!mdr
->has_more() || mdr
->more()->waiting_on_slave
.empty());
1726 dout(10) << "request " << *mdr
<< " was killed" << dendl
;
1730 MClientRequest
*req
= mdr
->client_request
;
1732 if (logger
) logger
->inc(l_mdss_dispatch_client_request
);
1734 dout(7) << "dispatch_client_request " << *req
<< dendl
;
1736 if (req
->may_write()) {
1737 if (mdcache
->is_readonly()) {
1738 dout(10) << " read-only FS" << dendl
;
1739 respond_to_request(mdr
, -EROFS
);
1742 if (mdr
->has_more() && mdr
->more()->slave_error
) {
1743 dout(10) << " got error from slaves" << dendl
;
1744 respond_to_request(mdr
, mdr
->more()->slave_error
);
1750 if (req
->get_op() == CEPH_MDS_OP_SETLAYOUT
||
1751 req
->get_op() == CEPH_MDS_OP_SETDIRLAYOUT
||
1752 req
->get_op() == CEPH_MDS_OP_SETLAYOUT
||
1753 req
->get_op() == CEPH_MDS_OP_RMXATTR
||
1754 req
->get_op() == CEPH_MDS_OP_SETXATTR
||
1755 req
->get_op() == CEPH_MDS_OP_CREATE
||
1756 req
->get_op() == CEPH_MDS_OP_SYMLINK
||
1757 req
->get_op() == CEPH_MDS_OP_MKSNAP
||
1758 ((req
->get_op() == CEPH_MDS_OP_LINK
||
1759 req
->get_op() == CEPH_MDS_OP_RENAME
) &&
1760 (!mdr
->has_more() || mdr
->more()->witnessed
.empty())) // haven't started slave request
1763 dout(20) << __func__
<< ": full, responding ENOSPC to op " << ceph_mds_op_name(req
->get_op()) << dendl
;
1764 respond_to_request(mdr
, -ENOSPC
);
1767 dout(20) << __func__
<< ": full, permitting op " << ceph_mds_op_name(req
->get_op()) << dendl
;
1771 switch (req
->get_op()) {
1772 case CEPH_MDS_OP_LOOKUPHASH
:
1773 case CEPH_MDS_OP_LOOKUPINO
:
1774 handle_client_lookup_ino(mdr
, false, false);
1776 case CEPH_MDS_OP_LOOKUPPARENT
:
1777 handle_client_lookup_ino(mdr
, true, false);
1779 case CEPH_MDS_OP_LOOKUPNAME
:
1780 handle_client_lookup_ino(mdr
, false, true);
1784 case CEPH_MDS_OP_LOOKUP
:
1785 handle_client_getattr(mdr
, true);
1788 case CEPH_MDS_OP_LOOKUPSNAP
:
1789 // lookupsnap does not reference a CDentry; treat it as a getattr
1790 case CEPH_MDS_OP_GETATTR
:
1791 handle_client_getattr(mdr
, false);
1794 case CEPH_MDS_OP_SETATTR
:
1795 handle_client_setattr(mdr
);
1797 case CEPH_MDS_OP_SETLAYOUT
:
1798 handle_client_setlayout(mdr
);
1800 case CEPH_MDS_OP_SETDIRLAYOUT
:
1801 handle_client_setdirlayout(mdr
);
1803 case CEPH_MDS_OP_SETXATTR
:
1804 handle_client_setxattr(mdr
);
1806 case CEPH_MDS_OP_RMXATTR
:
1807 handle_client_removexattr(mdr
);
1810 case CEPH_MDS_OP_READDIR
:
1811 handle_client_readdir(mdr
);
1814 case CEPH_MDS_OP_SETFILELOCK
:
1815 handle_client_file_setlock(mdr
);
1818 case CEPH_MDS_OP_GETFILELOCK
:
1819 handle_client_file_readlock(mdr
);
1823 case CEPH_MDS_OP_CREATE
:
1824 if (mdr
->has_completed
)
1825 handle_client_open(mdr
); // already created.. just open
1827 handle_client_openc(mdr
);
1830 case CEPH_MDS_OP_OPEN
:
1831 handle_client_open(mdr
);
1836 case CEPH_MDS_OP_MKNOD
:
1837 handle_client_mknod(mdr
);
1839 case CEPH_MDS_OP_LINK
:
1840 handle_client_link(mdr
);
1842 case CEPH_MDS_OP_UNLINK
:
1843 case CEPH_MDS_OP_RMDIR
:
1844 handle_client_unlink(mdr
);
1846 case CEPH_MDS_OP_RENAME
:
1847 handle_client_rename(mdr
);
1849 case CEPH_MDS_OP_MKDIR
:
1850 handle_client_mkdir(mdr
);
1852 case CEPH_MDS_OP_SYMLINK
:
1853 handle_client_symlink(mdr
);
1858 case CEPH_MDS_OP_LSSNAP
:
1859 handle_client_lssnap(mdr
);
1861 case CEPH_MDS_OP_MKSNAP
:
1862 handle_client_mksnap(mdr
);
1864 case CEPH_MDS_OP_RMSNAP
:
1865 handle_client_rmsnap(mdr
);
1867 case CEPH_MDS_OP_RENAMESNAP
:
1868 handle_client_renamesnap(mdr
);
1872 dout(1) << " unknown client op " << req
->get_op() << dendl
;
1873 respond_to_request(mdr
, -EOPNOTSUPP
);
1878 // ---------------------------------------
1881 /* This function DOES put the passed message before returning*/
1882 void Server::handle_slave_request(MMDSSlaveRequest
*m
)
1884 dout(4) << "handle_slave_request " << m
->get_reqid() << " from " << m
->get_source() << dendl
;
1885 mds_rank_t from
= mds_rank_t(m
->get_source().num());
1887 if (logger
) logger
->inc(l_mdss_handle_slave_request
);
1891 return handle_slave_request_reply(m
);
1893 // the purpose of rename notify is enforcing causal message ordering. making sure
1894 // bystanders have received all messages from rename srcdn's auth MDS.
1895 if (m
->get_op() == MMDSSlaveRequest::OP_RENAMENOTIFY
) {
1896 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(m
->get_reqid(), m
->get_attempt(),
1897 MMDSSlaveRequest::OP_RENAMENOTIFYACK
);
1898 mds
->send_message(reply
, m
->get_connection());
1903 CDentry
*straydn
= NULL
;
1904 if (m
->stray
.length() > 0) {
1905 straydn
= mdcache
->add_replica_stray(m
->stray
, from
);
1910 // am i a new slave?
1912 if (mdcache
->have_request(m
->get_reqid())) {
1914 mdr
= mdcache
->request_get(m
->get_reqid());
1916 // is my request newer?
1917 if (mdr
->attempt
> m
->get_attempt()) {
1918 dout(10) << "local request " << *mdr
<< " attempt " << mdr
->attempt
<< " > " << m
->get_attempt()
1919 << ", dropping " << *m
<< dendl
;
1925 if (mdr
->attempt
< m
->get_attempt()) {
1926 // mine is old, close it out
1927 dout(10) << "local request " << *mdr
<< " attempt " << mdr
->attempt
<< " < " << m
->get_attempt()
1928 << ", closing out" << dendl
;
1929 mdcache
->request_finish(mdr
);
1931 } else if (mdr
->slave_to_mds
!= from
) {
1932 dout(10) << "local request " << *mdr
<< " not slave to mds." << from
<< dendl
;
1937 if (m
->get_op() == MMDSSlaveRequest::OP_FINISH
&& m
->is_abort()) {
1938 mdr
->aborted
= true;
1939 if (mdr
->slave_request
) {
1940 // only abort on-going xlock, wrlock and auth pin
1941 assert(!mdr
->slave_did_prepare());
1943 mdcache
->request_finish(mdr
);
1950 if (m
->get_op() == MMDSSlaveRequest::OP_FINISH
) {
1951 dout(10) << "missing slave request for " << m
->get_reqid()
1952 << " OP_FINISH, must have lost race with a forward" << dendl
;
1956 mdr
= mdcache
->request_start_slave(m
->get_reqid(), m
->get_attempt(), m
);
1957 mdr
->set_op_stamp(m
->op_stamp
);
1959 assert(mdr
->slave_request
== 0); // only one at a time, please!
1963 mdr
->straydn
= straydn
;
1966 if (!mds
->is_clientreplay() && !mds
->is_active() && !mds
->is_stopping()) {
1967 dout(3) << "not clientreplay|active yet, waiting" << dendl
;
1968 mds
->wait_for_replay(new C_MDS_RetryMessage(mds
, m
));
1970 } else if (mds
->is_clientreplay() && !mds
->mdsmap
->is_clientreplay(from
) &&
1971 mdr
->locks
.empty()) {
1972 dout(3) << "not active yet, waiting" << dendl
;
1973 mds
->wait_for_active(new C_MDS_RetryMessage(mds
, m
));
1977 mdr
->slave_request
= m
;
1979 dispatch_slave_request(mdr
);
1982 /* This function DOES put the passed message before returning*/
1983 void Server::handle_slave_request_reply(MMDSSlaveRequest
*m
)
1985 mds_rank_t from
= mds_rank_t(m
->get_source().num());
1987 if (!mds
->is_clientreplay() && !mds
->is_active() && !mds
->is_stopping()) {
1988 metareqid_t r
= m
->get_reqid();
1989 if (!mdcache
->have_uncommitted_master(r
, from
)) {
1990 dout(10) << "handle_slave_request_reply ignoring slave reply from mds."
1991 << from
<< " reqid " << r
<< dendl
;
1995 dout(3) << "not clientreplay|active yet, waiting" << dendl
;
1996 mds
->wait_for_replay(new C_MDS_RetryMessage(mds
, m
));
2000 if (m
->get_op() == MMDSSlaveRequest::OP_COMMITTED
) {
2001 metareqid_t r
= m
->get_reqid();
2002 mdcache
->committed_master_slave(r
, from
);
2007 MDRequestRef mdr
= mdcache
->request_get(m
->get_reqid());
2008 if (m
->get_attempt() != mdr
->attempt
) {
2009 dout(10) << "handle_slave_request_reply " << *mdr
<< " ignoring reply from other attempt "
2010 << m
->get_attempt() << dendl
;
2015 switch (m
->get_op()) {
2016 case MMDSSlaveRequest::OP_XLOCKACK
:
2018 // identify lock, master request
2019 SimpleLock
*lock
= mds
->locker
->get_lock(m
->get_lock_type(),
2020 m
->get_object_info());
2021 mdr
->more()->slaves
.insert(from
);
2022 dout(10) << "got remote xlock on " << *lock
<< " on " << *lock
->get_parent() << dendl
;
2023 mdr
->xlocks
.insert(lock
);
2024 mdr
->locks
.insert(lock
);
2025 mdr
->finish_locking(lock
);
2026 lock
->get_xlock(mdr
, mdr
->get_client());
2028 assert(mdr
->more()->waiting_on_slave
.count(from
));
2029 mdr
->more()->waiting_on_slave
.erase(from
);
2030 assert(mdr
->more()->waiting_on_slave
.empty());
2031 mdcache
->dispatch_request(mdr
);
2035 case MMDSSlaveRequest::OP_WRLOCKACK
:
2037 // identify lock, master request
2038 SimpleLock
*lock
= mds
->locker
->get_lock(m
->get_lock_type(),
2039 m
->get_object_info());
2040 mdr
->more()->slaves
.insert(from
);
2041 dout(10) << "got remote wrlock on " << *lock
<< " on " << *lock
->get_parent() << dendl
;
2042 mdr
->remote_wrlocks
[lock
] = from
;
2043 mdr
->locks
.insert(lock
);
2044 mdr
->finish_locking(lock
);
2046 assert(mdr
->more()->waiting_on_slave
.count(from
));
2047 mdr
->more()->waiting_on_slave
.erase(from
);
2048 assert(mdr
->more()->waiting_on_slave
.empty());
2049 mdcache
->dispatch_request(mdr
);
2053 case MMDSSlaveRequest::OP_AUTHPINACK
:
2054 handle_slave_auth_pin_ack(mdr
, m
);
2057 case MMDSSlaveRequest::OP_LINKPREPACK
:
2058 handle_slave_link_prep_ack(mdr
, m
);
2061 case MMDSSlaveRequest::OP_RMDIRPREPACK
:
2062 handle_slave_rmdir_prep_ack(mdr
, m
);
2065 case MMDSSlaveRequest::OP_RENAMEPREPACK
:
2066 handle_slave_rename_prep_ack(mdr
, m
);
2069 case MMDSSlaveRequest::OP_RENAMENOTIFYACK
:
2070 handle_slave_rename_notify_ack(mdr
, m
);
2081 /* This function DOES put the mdr->slave_request before returning*/
2082 void Server::dispatch_slave_request(MDRequestRef
& mdr
)
2084 dout(7) << "dispatch_slave_request " << *mdr
<< " " << *mdr
->slave_request
<< dendl
;
2087 dout(7) << " abort flag set, finishing" << dendl
;
2088 mdcache
->request_finish(mdr
);
2092 if (logger
) logger
->inc(l_mdss_dispatch_slave_request
);
2094 int op
= mdr
->slave_request
->get_op();
2096 case MMDSSlaveRequest::OP_XLOCK
:
2097 case MMDSSlaveRequest::OP_WRLOCK
:
2100 SimpleLock
*lock
= mds
->locker
->get_lock(mdr
->slave_request
->get_lock_type(),
2101 mdr
->slave_request
->get_object_info());
2104 dout(10) << "don't have object, dropping" << dendl
;
2105 ceph_abort(); // can this happen, if we auth pinned properly.
2107 if (op
== MMDSSlaveRequest::OP_XLOCK
&& !lock
->get_parent()->is_auth()) {
2108 dout(10) << "not auth for remote xlock attempt, dropping on "
2109 << *lock
<< " on " << *lock
->get_parent() << dendl
;
2111 // use acquire_locks so that we get auth_pinning.
2112 set
<SimpleLock
*> rdlocks
;
2113 set
<SimpleLock
*> wrlocks
= mdr
->wrlocks
;
2114 set
<SimpleLock
*> xlocks
= mdr
->xlocks
;
2118 case MMDSSlaveRequest::OP_XLOCK
:
2119 xlocks
.insert(lock
);
2120 replycode
= MMDSSlaveRequest::OP_XLOCKACK
;
2122 case MMDSSlaveRequest::OP_WRLOCK
:
2123 wrlocks
.insert(lock
);
2124 replycode
= MMDSSlaveRequest::OP_WRLOCKACK
;
2128 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
2132 MMDSSlaveRequest
*r
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, replycode
);
2133 r
->set_lock_type(lock
->get_type());
2134 lock
->get_parent()->set_object_info(r
->get_object_info());
2135 mds
->send_message(r
, mdr
->slave_request
->get_connection());
2139 mdr
->slave_request
->put();
2140 mdr
->slave_request
= 0;
2144 case MMDSSlaveRequest::OP_UNXLOCK
:
2145 case MMDSSlaveRequest::OP_UNWRLOCK
:
2147 SimpleLock
*lock
= mds
->locker
->get_lock(mdr
->slave_request
->get_lock_type(),
2148 mdr
->slave_request
->get_object_info());
2150 bool need_issue
= false;
2152 case MMDSSlaveRequest::OP_UNXLOCK
:
2153 mds
->locker
->xlock_finish(lock
, mdr
.get(), &need_issue
);
2155 case MMDSSlaveRequest::OP_UNWRLOCK
:
2156 mds
->locker
->wrlock_finish(lock
, mdr
.get(), &need_issue
);
2160 mds
->locker
->issue_caps(static_cast<CInode
*>(lock
->get_parent()));
2162 // done. no ack necessary.
2163 mdr
->slave_request
->put();
2164 mdr
->slave_request
= 0;
2168 case MMDSSlaveRequest::OP_DROPLOCKS
:
2169 mds
->locker
->drop_locks(mdr
.get());
2170 mdr
->slave_request
->put();
2171 mdr
->slave_request
= 0;
2174 case MMDSSlaveRequest::OP_AUTHPIN
:
2175 handle_slave_auth_pin(mdr
);
2178 case MMDSSlaveRequest::OP_LINKPREP
:
2179 case MMDSSlaveRequest::OP_UNLINKPREP
:
2180 handle_slave_link_prep(mdr
);
2183 case MMDSSlaveRequest::OP_RMDIRPREP
:
2184 handle_slave_rmdir_prep(mdr
);
2187 case MMDSSlaveRequest::OP_RENAMEPREP
:
2188 handle_slave_rename_prep(mdr
);
2191 case MMDSSlaveRequest::OP_FINISH
:
2192 // information about rename imported caps
2193 if (mdr
->slave_request
->inode_export
.length() > 0)
2194 mdr
->more()->inode_import
.claim(mdr
->slave_request
->inode_export
);
2195 // finish off request.
2196 mdcache
->request_finish(mdr
);
2204 /* This function DOES put the mdr->slave_request before returning*/
2205 void Server::handle_slave_auth_pin(MDRequestRef
& mdr
)
2207 dout(10) << "handle_slave_auth_pin " << *mdr
<< dendl
;
2209 // build list of objects
2210 list
<MDSCacheObject
*> objects
;
2211 CInode
*auth_pin_freeze
= NULL
;
2212 bool fail
= false, wouldblock
= false, readonly
= false;
2214 if (mdcache
->is_readonly()) {
2215 dout(10) << " read-only FS" << dendl
;
2221 for (vector
<MDSCacheObjectInfo
>::iterator p
= mdr
->slave_request
->get_authpins().begin();
2222 p
!= mdr
->slave_request
->get_authpins().end();
2224 MDSCacheObject
*object
= mdcache
->get_object(*p
);
2226 dout(10) << " don't have " << *p
<< dendl
;
2231 objects
.push_back(object
);
2232 if (*p
== mdr
->slave_request
->get_authpin_freeze())
2233 auth_pin_freeze
= static_cast<CInode
*>(object
);
2237 // can we auth pin them?
2239 for (list
<MDSCacheObject
*>::iterator p
= objects
.begin();
2242 if (!(*p
)->is_auth()) {
2243 dout(10) << " not auth for " << **p
<< dendl
;
2247 if (mdr
->is_auth_pinned(*p
))
2249 if (!mdr
->can_auth_pin(*p
)) {
2250 if (mdr
->slave_request
->is_nonblock()) {
2251 dout(10) << " can't auth_pin (freezing?) " << **p
<< " nonblocking" << dendl
;
2257 dout(10) << " waiting for authpinnable on " << **p
<< dendl
;
2258 (*p
)->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
2259 mdr
->drop_local_auth_pins();
2261 mds
->locker
->notify_freeze_waiter(*p
);
2269 mdr
->drop_local_auth_pins(); // just in case
2271 /* freeze authpin wrong inode */
2272 if (mdr
->has_more() && mdr
->more()->is_freeze_authpin
&&
2273 mdr
->more()->rename_inode
!= auth_pin_freeze
)
2274 mdr
->unfreeze_auth_pin(true);
2276 /* handle_slave_rename_prep() call freeze_inode() to wait for all other operations
2277 * on the source inode to complete. This happens after all locks for the rename
2278 * operation are acquired. But to acquire locks, we need auth pin locks' parent
2279 * objects first. So there is an ABBA deadlock if someone auth pins the source inode
2280 * after locks are acquired and before Server::handle_slave_rename_prep() is called.
2281 * The solution is freeze the inode and prevent other MDRequests from getting new
2284 if (auth_pin_freeze
) {
2285 dout(10) << " freezing auth pin on " << *auth_pin_freeze
<< dendl
;
2286 if (!mdr
->freeze_auth_pin(auth_pin_freeze
)) {
2287 auth_pin_freeze
->add_waiter(CInode::WAIT_FROZEN
, new C_MDS_RetryRequest(mdcache
, mdr
));
2288 mds
->mdlog
->flush();
2292 for (list
<MDSCacheObject
*>::iterator p
= objects
.begin();
2295 dout(10) << "auth_pinning " << **p
<< dendl
;
2301 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, MMDSSlaveRequest::OP_AUTHPINACK
);
2303 // return list of my auth_pins (if any)
2304 for (set
<MDSCacheObject
*>::iterator p
= mdr
->auth_pins
.begin();
2305 p
!= mdr
->auth_pins
.end();
2307 MDSCacheObjectInfo info
;
2308 (*p
)->set_object_info(info
);
2309 reply
->get_authpins().push_back(info
);
2310 if (*p
== (MDSCacheObject
*)auth_pin_freeze
)
2311 auth_pin_freeze
->set_object_info(reply
->get_authpin_freeze());
2315 reply
->mark_error_wouldblock();
2317 reply
->mark_error_rofs();
2319 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
2321 // clean up this request
2322 mdr
->slave_request
->put();
2323 mdr
->slave_request
= 0;
2327 /* This function DOES NOT put the passed ack before returning*/
2328 void Server::handle_slave_auth_pin_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*ack
)
2330 dout(10) << "handle_slave_auth_pin_ack on " << *mdr
<< " " << *ack
<< dendl
;
2331 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
2334 set
<MDSCacheObject
*> pinned
;
2335 for (vector
<MDSCacheObjectInfo
>::iterator p
= ack
->get_authpins().begin();
2336 p
!= ack
->get_authpins().end();
2338 MDSCacheObject
*object
= mdcache
->get_object(*p
);
2339 assert(object
); // we pinned it
2340 dout(10) << " remote has pinned " << *object
<< dendl
;
2341 if (!mdr
->is_auth_pinned(object
))
2342 mdr
->remote_auth_pins
[object
] = from
;
2343 if (*p
== ack
->get_authpin_freeze())
2344 mdr
->set_remote_frozen_auth_pin(static_cast<CInode
*>(object
));
2345 pinned
.insert(object
);
2348 // removed frozen auth pin ?
2349 if (mdr
->more()->is_remote_frozen_authpin
&&
2350 ack
->get_authpin_freeze() == MDSCacheObjectInfo()) {
2351 auto p
= mdr
->remote_auth_pins
.find(mdr
->more()->rename_inode
);
2352 assert(p
!= mdr
->remote_auth_pins
.end());
2353 if (p
->second
== from
) {
2354 mdr
->more()->is_remote_frozen_authpin
= false;
2358 // removed auth pins?
2359 map
<MDSCacheObject
*, mds_rank_t
>::iterator p
= mdr
->remote_auth_pins
.begin();
2360 while (p
!= mdr
->remote_auth_pins
.end()) {
2361 MDSCacheObject
* object
= p
->first
;
2362 if (p
->second
== from
&& pinned
.count(object
) == 0) {
2363 dout(10) << " remote has unpinned " << *object
<< dendl
;
2364 mdr
->remote_auth_pins
.erase(p
++);
2370 if (ack
->is_error_rofs()) {
2371 mdr
->more()->slave_error
= -EROFS
;
2372 mdr
->aborted
= true;
2373 } else if (ack
->is_error_wouldblock()) {
2374 mdr
->more()->slave_error
= -EWOULDBLOCK
;
2375 mdr
->aborted
= true;
2379 mdr
->more()->slaves
.insert(from
);
2381 // clear from waiting list
2382 assert(mdr
->more()->waiting_on_slave
.count(from
));
2383 mdr
->more()->waiting_on_slave
.erase(from
);
2386 if (mdr
->more()->waiting_on_slave
.empty())
2387 mdcache
->dispatch_request(mdr
);
2389 dout(10) << "still waiting on slaves " << mdr
->more()->waiting_on_slave
<< dendl
;
2393 // ---------------------------------------
2398 * check whether we are permitted to complete a request
2400 * Check whether we have permission to perform the operation specified
2401 * by mask on the given inode, based on the capability in the mdr's
2404 bool Server::check_access(MDRequestRef
& mdr
, CInode
*in
, unsigned mask
)
2407 int r
= mdr
->session
->check_access(
2409 mdr
->client_request
->get_caller_uid(),
2410 mdr
->client_request
->get_caller_gid(),
2411 &mdr
->client_request
->get_caller_gid_list(),
2412 mdr
->client_request
->head
.args
.setattr
.uid
,
2413 mdr
->client_request
->head
.args
.setattr
.gid
);
2415 respond_to_request(mdr
, r
);
2423 * check whether fragment has reached maximum size
2426 bool Server::check_fragment_space(MDRequestRef
&mdr
, CDir
*in
)
2428 const auto size
= in
->get_frag_size();
2429 if (size
>= g_conf
->mds_bal_fragment_size_max
) {
2430 dout(10) << "fragment " << *in
<< " size exceeds " << g_conf
->mds_bal_fragment_size_max
<< " (ENOSPC)" << dendl
;
2431 respond_to_request(mdr
, -ENOSPC
);
2439 /** validate_dentry_dir
2441 * verify that the dir exists and would own the dname.
2442 * do not check if the dentry exists.
2444 CDir
*Server::validate_dentry_dir(MDRequestRef
& mdr
, CInode
*diri
, const string
& dname
)
2446 // make sure parent is a dir?
2447 if (!diri
->is_dir()) {
2448 dout(7) << "validate_dentry_dir: not a dir" << dendl
;
2449 respond_to_request(mdr
, -ENOTDIR
);
2454 frag_t fg
= diri
->pick_dirfrag(dname
);
2455 CDir
*dir
= try_open_auth_dirfrag(diri
, fg
, mdr
);
2460 if (dir
->is_frozen()) {
2461 dout(7) << "dir is frozen " << *dir
<< dendl
;
2462 dir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
2470 /** prepare_null_dentry
2471 * prepare a null (or existing) dentry in given dir.
2472 * wait for any dn lock.
2474 CDentry
* Server::prepare_null_dentry(MDRequestRef
& mdr
, CDir
*dir
, const string
& dname
, bool okexist
)
2476 dout(10) << "prepare_null_dentry " << dname
<< " in " << *dir
<< dendl
;
2477 assert(dir
->is_auth());
2479 client_t client
= mdr
->get_client();
2481 // does it already exist?
2482 CDentry
*dn
= dir
->lookup(dname
);
2485 if (dn->lock.is_xlocked_by_other(mdr)) {
2486 dout(10) << "waiting on xlocked dentry " << *dn << dendl;
2487 dn->lock.add_waiter(SimpleLock::WAIT_RD, new C_MDS_RetryRequest(mdcache, mdr));
2491 if (!dn
->get_linkage(client
, mdr
)->is_null()) {
2492 // name already exists
2493 dout(10) << "dentry " << dname
<< " exists in " << *dir
<< dendl
;
2495 respond_to_request(mdr
, -EEXIST
);
2499 dn
->first
= dir
->inode
->find_snaprealm()->get_newest_seq() + 1;
2505 // make sure dir is complete
2506 if (!dir
->is_complete() && (!dir
->has_bloom() || dir
->is_in_bloom(dname
))) {
2507 dout(7) << " incomplete dir contents for " << *dir
<< ", fetching" << dendl
;
2508 dir
->fetch(new C_MDS_RetryRequest(mdcache
, mdr
));
2513 dn
= dir
->add_null_dentry(dname
, dir
->inode
->find_snaprealm()->get_newest_seq() + 1);
2515 dout(10) << "prepare_null_dentry added " << *dn
<< dendl
;
2519 CDentry
* Server::prepare_stray_dentry(MDRequestRef
& mdr
, CInode
*in
)
2521 CDentry
*straydn
= mdr
->straydn
;
2524 in
->name_stray_dentry(straydname
);
2525 if (straydn
->get_name() == straydname
)
2528 assert(!mdr
->done_locking
);
2529 mdr
->unpin(straydn
);
2532 CDir
*straydir
= mdcache
->get_stray_dir(in
);
2534 if (!mdr
->client_request
->is_replay() &&
2535 !check_fragment_space(mdr
, straydir
))
2538 straydn
= mdcache
->get_or_create_stray_dentry(in
);
2539 mdr
->straydn
= straydn
;
2544 /** prepare_new_inode
2546 * create a new inode. set c/m/atime. hit dir pop.
2548 CInode
* Server::prepare_new_inode(MDRequestRef
& mdr
, CDir
*dir
, inodeno_t useino
, unsigned mode
,
2549 file_layout_t
*layout
)
2551 CInode
*in
= new CInode(mdcache
);
2553 // Server::prepare_force_open_sessions() can re-open session in closing
2554 // state. In that corner case, session's prealloc_inos are being freed.
2555 // To simplify the code, we disallow using/refilling session's prealloc_ino
2556 // while session is opening.
2557 bool allow_prealloc_inos
= !mdr
->session
->is_opening();
2560 if (allow_prealloc_inos
&&
2561 mdr
->session
->info
.prealloc_inos
.size()) {
2562 mdr
->used_prealloc_ino
=
2563 in
->inode
.ino
= mdr
->session
->take_ino(useino
); // prealloc -> used
2564 mds
->sessionmap
.mark_projected(mdr
->session
);
2566 dout(10) << "prepare_new_inode used_prealloc " << mdr
->used_prealloc_ino
2567 << " (" << mdr
->session
->info
.prealloc_inos
2568 << ", " << mdr
->session
->info
.prealloc_inos
.size() << " left)"
2572 in
->inode
.ino
= mds
->inotable
->project_alloc_id();
2573 dout(10) << "prepare_new_inode alloc " << mdr
->alloc_ino
<< dendl
;
2576 if (useino
&& useino
!= in
->inode
.ino
) {
2577 dout(0) << "WARNING: client specified " << useino
<< " and i allocated " << in
->inode
.ino
<< dendl
;
2578 mds
->clog
->error() << mdr
->client_request
->get_source()
2579 << " specified ino " << useino
2580 << " but mds." << mds
->get_nodeid() << " allocated " << in
->inode
.ino
;
2581 //ceph_abort(); // just for now.
2584 if (allow_prealloc_inos
&&
2585 mdr
->session
->get_num_projected_prealloc_inos() < g_conf
->mds_client_prealloc_inos
/ 2) {
2586 int need
= g_conf
->mds_client_prealloc_inos
- mdr
->session
->get_num_projected_prealloc_inos();
2587 mds
->inotable
->project_alloc_ids(mdr
->prealloc_inos
, need
);
2588 assert(mdr
->prealloc_inos
.size()); // or else fix projected increment semantics
2589 mdr
->session
->pending_prealloc_inos
.insert(mdr
->prealloc_inos
);
2590 mds
->sessionmap
.mark_projected(mdr
->session
);
2591 dout(10) << "prepare_new_inode prealloc " << mdr
->prealloc_inos
<< dendl
;
2594 in
->inode
.version
= 1;
2595 in
->inode
.xattr_version
= 1;
2596 in
->inode
.nlink
= 1; // FIXME
2598 in
->inode
.mode
= mode
;
2600 memset(&in
->inode
.dir_layout
, 0, sizeof(in
->inode
.dir_layout
));
2601 if (in
->inode
.is_dir()) {
2602 in
->inode
.dir_layout
.dl_dir_hash
= g_conf
->mds_default_dir_hash
;
2603 } else if (layout
) {
2604 in
->inode
.layout
= *layout
;
2606 in
->inode
.layout
= mdcache
->default_file_layout
;
2609 in
->inode
.truncate_size
= -1ull; // not truncated, yet!
2610 in
->inode
.truncate_seq
= 1; /* starting with 1, 0 is kept for no-truncation logic */
2612 CInode
*diri
= dir
->get_inode();
2614 dout(10) << oct
<< " dir mode 0" << diri
->inode
.mode
<< " new mode 0" << mode
<< dec
<< dendl
;
2616 if (diri
->inode
.mode
& S_ISGID
) {
2617 dout(10) << " dir is sticky" << dendl
;
2618 in
->inode
.gid
= diri
->inode
.gid
;
2619 if (S_ISDIR(mode
)) {
2620 dout(10) << " new dir also sticky" << dendl
;
2621 in
->inode
.mode
|= S_ISGID
;
2624 in
->inode
.gid
= mdr
->client_request
->get_caller_gid();
2626 in
->inode
.uid
= mdr
->client_request
->get_caller_uid();
2628 in
->inode
.btime
= in
->inode
.ctime
= in
->inode
.mtime
= in
->inode
.atime
=
2629 mdr
->get_op_stamp();
2631 in
->inode
.change_attr
= 0;
2633 MClientRequest
*req
= mdr
->client_request
;
2634 if (req
->get_data().length()) {
2635 bufferlist::iterator p
= req
->get_data().begin();
2637 // xattrs on new inode?
2638 map
<string
,bufferptr
> xattrs
;
2639 ::decode(xattrs
, p
);
2640 for (map
<string
,bufferptr
>::iterator p
= xattrs
.begin(); p
!= xattrs
.end(); ++p
) {
2641 dout(10) << "prepare_new_inode setting xattr " << p
->first
<< dendl
;
2642 in
->xattrs
[p
->first
] = p
->second
;
2646 if (!mds
->mdsmap
->get_inline_data_enabled() ||
2647 !mdr
->session
->connection
->has_feature(CEPH_FEATURE_MDS_INLINE_DATA
))
2648 in
->inode
.inline_data
.version
= CEPH_INLINE_NONE
;
2650 mdcache
->add_inode(in
); // add
2651 dout(10) << "prepare_new_inode " << *in
<< dendl
;
2655 void Server::journal_allocated_inos(MDRequestRef
& mdr
, EMetaBlob
*blob
)
2657 dout(20) << "journal_allocated_inos sessionmapv " << mds
->sessionmap
.get_projected()
2658 << " inotablev " << mds
->inotable
->get_projected_version()
2660 blob
->set_ino_alloc(mdr
->alloc_ino
,
2661 mdr
->used_prealloc_ino
,
2663 mdr
->client_request
->get_source(),
2664 mds
->sessionmap
.get_projected(),
2665 mds
->inotable
->get_projected_version());
2668 void Server::apply_allocated_inos(MDRequestRef
& mdr
, Session
*session
)
2670 dout(10) << "apply_allocated_inos " << mdr
->alloc_ino
2671 << " / " << mdr
->prealloc_inos
2672 << " / " << mdr
->used_prealloc_ino
<< dendl
;
2674 if (mdr
->alloc_ino
) {
2675 mds
->inotable
->apply_alloc_id(mdr
->alloc_ino
);
2677 if (mdr
->prealloc_inos
.size()) {
2679 session
->pending_prealloc_inos
.subtract(mdr
->prealloc_inos
);
2680 session
->info
.prealloc_inos
.insert(mdr
->prealloc_inos
);
2681 mds
->sessionmap
.mark_dirty(session
);
2682 mds
->inotable
->apply_alloc_ids(mdr
->prealloc_inos
);
2684 if (mdr
->used_prealloc_ino
) {
2686 session
->info
.used_inos
.erase(mdr
->used_prealloc_ino
);
2687 mds
->sessionmap
.mark_dirty(session
);
2691 class C_MDS_TryFindInode
: public ServerContext
{
2694 C_MDS_TryFindInode(Server
*s
, MDRequestRef
& r
) : ServerContext(s
), mdr(r
) {}
2695 void finish(int r
) override
{
2696 if (r
== -ESTALE
) // :( find_ino_peers failed
2697 server
->respond_to_request(mdr
, r
);
2699 server
->dispatch_client_request(mdr
);
2703 CDir
*Server::traverse_to_auth_dir(MDRequestRef
& mdr
, vector
<CDentry
*> &trace
, filepath refpath
)
2705 // figure parent dir vs dname
2706 if (refpath
.depth() == 0) {
2707 dout(7) << "can't do that to root" << dendl
;
2708 respond_to_request(mdr
, -EINVAL
);
2711 string dname
= refpath
.last_dentry();
2712 refpath
.pop_dentry();
2714 dout(10) << "traverse_to_auth_dir dirpath " << refpath
<< " dname " << dname
<< dendl
;
2716 // traverse to parent dir
2718 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, refpath
, &trace
, &diri
, MDS_TRAVERSE_FORWARD
);
2719 if (r
> 0) return 0; // delayed
2722 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
2723 mdcache
->find_ino_peers(refpath
.get_ino(), new C_MDS_TryFindInode(this, mdr
));
2726 respond_to_request(mdr
, r
);
2730 // is it an auth dir?
2731 CDir
*dir
= validate_dentry_dir(mdr
, diri
, dname
);
2733 return 0; // forwarded or waiting for freeze
2735 dout(10) << "traverse_to_auth_dir " << *dir
<< dendl
;
2739 /* If this returns null, the request has been handled
2740 * as appropriate: forwarded on, or the client's been replied to */
2741 CInode
* Server::rdlock_path_pin_ref(MDRequestRef
& mdr
, int n
,
2742 set
<SimpleLock
*> &rdlocks
,
2744 bool no_want_auth
, /* for readdir, who doesn't want auth _even_if_ it's
2746 file_layout_t
**layout
,
2747 bool no_lookup
) // true if we cannot return a null dentry lease
2749 const filepath
& refpath
= n
? mdr
->get_filepath2() : mdr
->get_filepath();
2750 dout(10) << "rdlock_path_pin_ref " << *mdr
<< " " << refpath
<< dendl
;
2752 if (mdr
->done_locking
)
2756 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, refpath
, &mdr
->dn
[n
], &mdr
->in
[n
], MDS_TRAVERSE_FORWARD
);
2758 return NULL
; // delayed
2759 if (r
< 0) { // error
2760 if (r
== -ENOENT
&& n
== 0 && mdr
->dn
[n
].size()) {
2762 mdr
->tracedn
= mdr
->dn
[n
][mdr
->dn
[n
].size()-1];
2763 respond_to_request(mdr
, r
);
2764 } else if (r
== -ESTALE
) {
2765 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
2766 MDSInternalContextBase
*c
= new C_MDS_TryFindInode(this, mdr
);
2767 mdcache
->find_ino_peers(refpath
.get_ino(), c
);
2769 dout(10) << "FAIL on error " << r
<< dendl
;
2770 respond_to_request(mdr
, r
);
2774 CInode
*ref
= mdr
->in
[n
];
2775 dout(10) << "ref is " << *ref
<< dendl
;
2777 // fw to inode auth?
2778 if (mdr
->snapid
!= CEPH_NOSNAP
&& !no_want_auth
)
2782 if (ref
->is_ambiguous_auth()) {
2783 dout(10) << "waiting for single auth on " << *ref
<< dendl
;
2784 ref
->add_waiter(CInode::WAIT_SINGLEAUTH
, new C_MDS_RetryRequest(mdcache
, mdr
));
2787 if (!ref
->is_auth()) {
2788 dout(10) << "fw to auth for " << *ref
<< dendl
;
2789 mdcache
->request_forward(mdr
, ref
->authority().first
);
2794 // do NOT proceed if freezing, as cap release may defer in that case, and
2795 // we could deadlock when we try to lock @ref.
2796 // if we're already auth_pinned, continue; the release has already been processed.
2797 if (ref
->is_frozen() || ref
->is_frozen_auth_pin() ||
2798 (ref
->is_freezing() && !mdr
->is_auth_pinned(ref
))) {
2799 dout(7) << "waiting for !frozen/authpinnable on " << *ref
<< dendl
;
2800 ref
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
2801 /* If we have any auth pins, this will deadlock.
2802 * But the only way to get here if we've already got auth pins
2803 * is because we're on an inode with snapshots that got updated
2804 * between dispatches of this request. So we're going to drop
2805 * our locks and our auth pins and reacquire them later.
2807 * This is safe since we're only in this function when working on
2808 * a single MDS request; otherwise we'd be in
2809 * rdlock_path_xlock_dentry.
2811 mds
->locker
->drop_locks(mdr
.get(), NULL
);
2812 mdr
->drop_local_auth_pins();
2813 if (!mdr
->remote_auth_pins
.empty())
2814 mds
->locker
->notify_freeze_waiter(ref
);
2821 for (int i
=0; i
<(int)mdr
->dn
[n
].size(); i
++)
2822 rdlocks
.insert(&mdr
->dn
[n
][i
]->lock
);
2824 mds
->locker
->include_snap_rdlocks_wlayout(rdlocks
, ref
, layout
);
2826 mds
->locker
->include_snap_rdlocks(rdlocks
, ref
);
2834 /** rdlock_path_xlock_dentry
2835 * traverse path to the directory that could/would contain dentry.
2836 * make sure i am auth for that dentry, forward as necessary.
2837 * create null dentry in place (or use existing if okexist).
2838 * get rdlocks on traversed dentries, xlock on new dentry.
2840 CDentry
* Server::rdlock_path_xlock_dentry(MDRequestRef
& mdr
, int n
,
2841 set
<SimpleLock
*>& rdlocks
, set
<SimpleLock
*>& wrlocks
, set
<SimpleLock
*>& xlocks
,
2842 bool okexist
, bool mustexist
, bool alwaysxlock
,
2843 file_layout_t
**layout
)
2845 const filepath
& refpath
= n
? mdr
->get_filepath2() : mdr
->get_filepath();
2847 dout(10) << "rdlock_path_xlock_dentry " << *mdr
<< " " << refpath
<< dendl
;
2849 client_t client
= mdr
->get_client();
2851 if (mdr
->done_locking
)
2852 return mdr
->dn
[n
].back();
2854 CDir
*dir
= traverse_to_auth_dir(mdr
, mdr
->dn
[n
], refpath
);
2857 CInode
*diri
= dir
->get_inode();
2858 if (!mdr
->reqid
.name
.is_mds()) {
2859 if (diri
->is_system() && !diri
->is_root()) {
2860 respond_to_request(mdr
, -EROFS
);
2864 if (!diri
->is_base() && diri
->get_projected_parent_dir()->inode
->is_stray()) {
2865 respond_to_request(mdr
, -ENOENT
);
2869 // make a null dentry?
2870 const string
&dname
= refpath
.last_dentry();
2873 dn
= dir
->lookup(dname
);
2875 // make sure dir is complete
2876 if (!dn
&& !dir
->is_complete() &&
2877 (!dir
->has_bloom() || dir
->is_in_bloom(dname
))) {
2878 dout(7) << " incomplete dir contents for " << *dir
<< ", fetching" << dendl
;
2879 dir
->fetch(new C_MDS_RetryRequest(mdcache
, mdr
));
2884 if (dn
&& !dn
->lock
.can_read(client
) && dn
->lock
.get_xlock_by() != mdr
) {
2885 dout(10) << "waiting on xlocked dentry " << *dn
<< dendl
;
2886 dn
->lock
.add_waiter(SimpleLock::WAIT_RD
, new C_MDS_RetryRequest(mdcache
, mdr
));
2891 if (!dn
|| dn
->get_linkage(client
, mdr
)->is_null()) {
2892 dout(7) << "dentry " << dname
<< " dne in " << *dir
<< dendl
;
2893 respond_to_request(mdr
, -ENOENT
);
2897 dn
= prepare_null_dentry(mdr
, dir
, dname
, okexist
);
2902 mdr
->dn
[n
].push_back(dn
);
2903 CDentry::linkage_t
*dnl
= dn
->get_linkage(client
, mdr
);
2904 mdr
->in
[n
] = dnl
->get_inode();
2907 // NOTE: rename takes the same set of locks for srcdn
2908 for (int i
=0; i
<(int)mdr
->dn
[n
].size(); i
++)
2909 rdlocks
.insert(&mdr
->dn
[n
][i
]->lock
);
2910 if (alwaysxlock
|| dnl
->is_null())
2911 xlocks
.insert(&dn
->lock
); // new dn, xlock
2913 rdlocks
.insert(&dn
->lock
); // existing dn, rdlock
2914 wrlocks
.insert(&dn
->get_dir()->inode
->filelock
); // also, wrlock on dir mtime
2915 wrlocks
.insert(&dn
->get_dir()->inode
->nestlock
); // also, wrlock on dir mtime
2917 mds
->locker
->include_snap_rdlocks_wlayout(rdlocks
, dn
->get_dir()->inode
, layout
);
2919 mds
->locker
->include_snap_rdlocks(rdlocks
, dn
->get_dir()->inode
);
2929 * try_open_auth_dirfrag -- open dirfrag, or forward to dirfrag auth
2931 * @param diri base inode
2932 * @param fg the exact frag we want
2933 * @param mdr request
2934 * @returns the pointer, or NULL if it had to be delayed (but mdr is taken care of)
2936 CDir
* Server::try_open_auth_dirfrag(CInode
*diri
, frag_t fg
, MDRequestRef
& mdr
)
2938 CDir
*dir
= diri
->get_dirfrag(fg
);
2940 // not open and inode not mine?
2941 if (!dir
&& !diri
->is_auth()) {
2942 mds_rank_t inauth
= diri
->authority().first
;
2943 dout(7) << "try_open_auth_dirfrag: not open, not inode auth, fw to mds." << inauth
<< dendl
;
2944 mdcache
->request_forward(mdr
, inauth
);
2948 // not open and inode frozen?
2949 if (!dir
&& diri
->is_frozen()) {
2950 dout(10) << "try_open_auth_dirfrag: dir inode is frozen, waiting " << *diri
<< dendl
;
2951 assert(diri
->get_parent_dir());
2952 diri
->add_waiter(CInode::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
2958 dir
= diri
->get_or_open_dirfrag(mdcache
, fg
);
2960 // am i auth for the dirfrag?
2961 if (!dir
->is_auth()) {
2962 mds_rank_t auth
= dir
->authority().first
;
2963 dout(7) << "try_open_auth_dirfrag: not auth for " << *dir
2964 << ", fw to mds." << auth
<< dendl
;
2965 mdcache
->request_forward(mdr
, auth
);
2973 // ===============================================================================
2976 void Server::handle_client_getattr(MDRequestRef
& mdr
, bool is_lookup
)
2978 MClientRequest
*req
= mdr
->client_request
;
2979 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
2981 if (req
->get_filepath().depth() == 0 && is_lookup
) {
2982 // refpath can't be empty for lookup but it can for
2983 // getattr (we do getattr with empty refpath for mount of '/')
2984 respond_to_request(mdr
, -EINVAL
);
2988 CInode
*ref
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, false, false, NULL
, !is_lookup
);
2992 * if client currently holds the EXCL cap on a field, do not rdlock
2993 * it; client's stat() will result in valid info if _either_ EXCL
2994 * cap is held or MDS rdlocks and reads the value here.
2996 * handling this case here is easier than weakening rdlock
2997 * semantics... that would cause problems elsewhere.
2999 client_t client
= mdr
->get_client();
3001 Capability
*cap
= ref
->get_client_cap(client
);
3002 if (cap
&& (mdr
->snapid
== CEPH_NOSNAP
||
3003 mdr
->snapid
<= cap
->client_follows
))
3004 issued
= cap
->issued();
3006 int mask
= req
->head
.args
.getattr
.mask
;
3007 if ((mask
& CEPH_CAP_LINK_SHARED
) && (issued
& CEPH_CAP_LINK_EXCL
) == 0) rdlocks
.insert(&ref
->linklock
);
3008 if ((mask
& CEPH_CAP_AUTH_SHARED
) && (issued
& CEPH_CAP_AUTH_EXCL
) == 0) rdlocks
.insert(&ref
->authlock
);
3009 if ((mask
& CEPH_CAP_FILE_SHARED
) && (issued
& CEPH_CAP_FILE_EXCL
) == 0) rdlocks
.insert(&ref
->filelock
);
3010 if ((mask
& CEPH_CAP_XATTR_SHARED
) && (issued
& CEPH_CAP_XATTR_EXCL
) == 0) rdlocks
.insert(&ref
->xattrlock
);
3012 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3015 if (!check_access(mdr
, ref
, MAY_READ
))
3018 // note which caps are requested, so we return at least a snapshot
3019 // value for them. (currently this matters for xattrs and inline data)
3020 mdr
->getattr_caps
= mask
;
3022 mds
->balancer
->hit_inode(ceph_clock_now(), ref
, META_POP_IRD
,
3023 req
->get_source().num());
3026 dout(10) << "reply to stat on " << *req
<< dendl
;
3029 mdr
->tracedn
= mdr
->dn
[0].back();
3030 respond_to_request(mdr
, 0);
3033 struct C_MDS_LookupIno2
: public ServerContext
{
3035 C_MDS_LookupIno2(Server
*s
, MDRequestRef
& r
) : ServerContext(s
), mdr(r
) {}
3036 void finish(int r
) override
{
3037 server
->_lookup_ino_2(mdr
, r
);
3041 /* This function DOES clean up the mdr before returning*/
3045 void Server::handle_client_lookup_ino(MDRequestRef
& mdr
,
3046 bool want_parent
, bool want_dentry
)
3048 MClientRequest
*req
= mdr
->client_request
;
3050 inodeno_t ino
= req
->get_filepath().get_ino();
3051 CInode
*in
= mdcache
->get_inode(ino
);
3052 if (in
&& in
->state_test(CInode::STATE_PURGING
)) {
3053 respond_to_request(mdr
, -ESTALE
);
3057 mdcache
->open_ino(ino
, (int64_t)-1, new C_MDS_LookupIno2(this, mdr
), false);
3061 if (mdr
&& in
->snaprealm
&& !in
->snaprealm
->is_open() &&
3062 !in
->snaprealm
->open_parents(new C_MDS_RetryRequest(mdcache
, mdr
))) {
3066 // check for nothing (not read or write); this still applies the
3068 if (!check_access(mdr
, in
, 0))
3071 CDentry
*dn
= in
->get_projected_parent_dn();
3072 CInode
*diri
= dn
? dn
->get_dir()->inode
: NULL
;
3074 set
<SimpleLock
*> rdlocks
;
3075 if (dn
&& (want_parent
|| want_dentry
)) {
3077 rdlocks
.insert(&dn
->lock
);
3080 unsigned mask
= req
->head
.args
.getattr
.mask
;
3082 Capability
*cap
= in
->get_client_cap(mdr
->get_client());
3084 if (cap
&& (mdr
->snapid
== CEPH_NOSNAP
|| mdr
->snapid
<= cap
->client_follows
))
3085 issued
= cap
->issued();
3086 // permission bits, ACL/security xattrs
3087 if ((mask
& CEPH_CAP_AUTH_SHARED
) && (issued
& CEPH_CAP_AUTH_EXCL
) == 0)
3088 rdlocks
.insert(&in
->authlock
);
3089 if ((mask
& CEPH_CAP_XATTR_SHARED
) && (issued
& CEPH_CAP_XATTR_EXCL
) == 0)
3090 rdlocks
.insert(&in
->xattrlock
);
3092 mdr
->getattr_caps
= mask
;
3095 if (!rdlocks
.empty()) {
3096 set
<SimpleLock
*> wrlocks
, xlocks
;
3097 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3101 // need read access to directory inode
3102 if (!check_access(mdr
, diri
, MAY_READ
))
3108 if (in
->is_base()) {
3109 respond_to_request(mdr
, -EINVAL
);
3112 if (!diri
|| diri
->is_stray()) {
3113 respond_to_request(mdr
, -ESTALE
);
3116 dout(10) << "reply to lookup_parent " << *in
<< dendl
;
3118 respond_to_request(mdr
, 0);
3121 inodeno_t dirino
= req
->get_filepath2().get_ino();
3122 if (!diri
|| (dirino
!= inodeno_t() && diri
->ino() != dirino
)) {
3123 respond_to_request(mdr
, -ENOENT
);
3126 dout(10) << "reply to lookup_name " << *in
<< dendl
;
3128 dout(10) << "reply to lookup_ino " << *in
<< dendl
;
3133 respond_to_request(mdr
, 0);
3137 void Server::_lookup_ino_2(MDRequestRef
& mdr
, int r
)
3139 inodeno_t ino
= mdr
->client_request
->get_filepath().get_ino();
3140 dout(10) << "_lookup_ino_2 " << mdr
.get() << " ino " << ino
<< " r=" << r
<< dendl
;
3142 // `r` is a rank if >=0, else an error code
3144 mds_rank_t
dest_rank(r
);
3145 if (dest_rank
== mds
->get_nodeid())
3146 dispatch_client_request(mdr
);
3148 mdcache
->request_forward(mdr
, dest_rank
);
3153 if (r
== -ENOENT
|| r
== -ENODATA
)
3155 respond_to_request(mdr
, r
);
3159 /* This function takes responsibility for the passed mdr*/
3160 void Server::handle_client_open(MDRequestRef
& mdr
)
3162 MClientRequest
*req
= mdr
->client_request
;
3163 dout(7) << "open on " << req
->get_filepath() << dendl
;
3165 int flags
= req
->head
.args
.open
.flags
;
3166 int cmode
= ceph_flags_to_mode(flags
);
3168 respond_to_request(mdr
, -EINVAL
);
3172 bool need_auth
= !file_mode_is_readonly(cmode
) ||
3173 (flags
& (CEPH_O_TRUNC
| CEPH_O_DIRECTORY
));
3175 if ((cmode
& CEPH_FILE_MODE_WR
) && mdcache
->is_readonly()) {
3176 dout(7) << "read-only FS" << dendl
;
3177 respond_to_request(mdr
, -EROFS
);
3181 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3182 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, need_auth
);
3186 if (cur
->is_frozen() || cur
->state_test(CInode::STATE_EXPORTINGCAPS
)) {
3188 mdr
->done_locking
= false;
3189 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
3194 if (!cur
->inode
.is_file()) {
3195 // can only open non-regular inode with mode FILE_MODE_PIN, at least for now.
3196 cmode
= CEPH_FILE_MODE_PIN
;
3197 // the inode is symlink and client wants to follow it, ignore the O_TRUNC flag.
3198 if (cur
->inode
.is_symlink() && !(flags
& CEPH_O_NOFOLLOW
))
3199 flags
&= ~CEPH_O_TRUNC
;
3202 dout(10) << "open flags = " << flags
3203 << ", filemode = " << cmode
3204 << ", need_auth = " << need_auth
3208 /*if (!cur->inode.is_file() && !cur->inode.is_dir()) {
3209 dout(7) << "not a file or dir " << *cur << dendl;
3210 respond_to_request(mdr, -ENXIO); // FIXME what error do we want?
3213 if ((flags
& CEPH_O_DIRECTORY
) && !cur
->inode
.is_dir() && !cur
->inode
.is_symlink()) {
3214 dout(7) << "specified O_DIRECTORY on non-directory " << *cur
<< dendl
;
3215 respond_to_request(mdr
, -EINVAL
);
3219 if ((flags
& CEPH_O_TRUNC
) && !cur
->inode
.is_file()) {
3220 dout(7) << "specified O_TRUNC on !(file|symlink) " << *cur
<< dendl
;
3221 // we should return -EISDIR for directory, return -EINVAL for other non-regular
3222 respond_to_request(mdr
, cur
->inode
.is_dir() ? -EISDIR
: -EINVAL
);
3226 if (cur
->inode
.inline_data
.version
!= CEPH_INLINE_NONE
&&
3227 !mdr
->session
->connection
->has_feature(CEPH_FEATURE_MDS_INLINE_DATA
)) {
3228 dout(7) << "old client cannot open inline data file " << *cur
<< dendl
;
3229 respond_to_request(mdr
, -EPERM
);
3233 // snapped data is read only
3234 if (mdr
->snapid
!= CEPH_NOSNAP
&&
3235 ((cmode
& CEPH_FILE_MODE_WR
) || req
->may_write())) {
3236 dout(7) << "snap " << mdr
->snapid
<< " is read-only " << *cur
<< dendl
;
3237 respond_to_request(mdr
, -EROFS
);
3241 unsigned mask
= req
->head
.args
.open
.mask
;
3243 Capability
*cap
= cur
->get_client_cap(mdr
->get_client());
3245 if (cap
&& (mdr
->snapid
== CEPH_NOSNAP
|| mdr
->snapid
<= cap
->client_follows
))
3246 issued
= cap
->issued();
3247 // permission bits, ACL/security xattrs
3248 if ((mask
& CEPH_CAP_AUTH_SHARED
) && (issued
& CEPH_CAP_AUTH_EXCL
) == 0)
3249 rdlocks
.insert(&cur
->authlock
);
3250 if ((mask
& CEPH_CAP_XATTR_SHARED
) && (issued
& CEPH_CAP_XATTR_EXCL
) == 0)
3251 rdlocks
.insert(&cur
->xattrlock
);
3253 mdr
->getattr_caps
= mask
;
3257 if ((flags
& CEPH_O_TRUNC
) && !mdr
->has_completed
) {
3258 assert(cur
->is_auth());
3260 xlocks
.insert(&cur
->filelock
);
3261 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3264 if (!check_access(mdr
, cur
, MAY_WRITE
))
3267 // wait for pending truncate?
3268 const inode_t
*pi
= cur
->get_projected_inode();
3269 if (pi
->is_truncating()) {
3270 dout(10) << " waiting for pending truncate from " << pi
->truncate_from
3271 << " to " << pi
->truncate_size
<< " to complete on " << *cur
<< dendl
;
3272 mds
->locker
->drop_locks(mdr
.get());
3273 mdr
->drop_local_auth_pins();
3274 cur
->add_waiter(CInode::WAIT_TRUNC
, new C_MDS_RetryRequest(mdcache
, mdr
));
3278 do_open_truncate(mdr
, cmode
);
3282 // sync filelock if snapped.
3283 // this makes us wait for writers to flushsnaps, ensuring we get accurate metadata,
3284 // and that data itself is flushed so that we can read the snapped data off disk.
3285 if (mdr
->snapid
!= CEPH_NOSNAP
&& !cur
->is_dir()) {
3286 rdlocks
.insert(&cur
->filelock
);
3289 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3293 if (cmode
& CEPH_FILE_MODE_WR
)
3295 if (!check_access(mdr
, cur
, mask
))
3298 if (cur
->is_file() || cur
->is_dir()) {
3299 if (mdr
->snapid
== CEPH_NOSNAP
) {
3301 Capability
*cap
= mds
->locker
->issue_new_caps(cur
, cmode
, mdr
->session
, 0, req
->is_replay());
3303 dout(12) << "open issued caps " << ccap_string(cap
->pending())
3304 << " for " << req
->get_source()
3305 << " on " << *cur
<< dendl
;
3307 int caps
= ceph_caps_for_mode(cmode
);
3308 dout(12) << "open issued IMMUTABLE SNAP caps " << ccap_string(caps
)
3309 << " for " << req
->get_source()
3310 << " snapid " << mdr
->snapid
3311 << " on " << *cur
<< dendl
;
3312 mdr
->snap_caps
= caps
;
3316 // increase max_size?
3317 if (cmode
& CEPH_FILE_MODE_WR
)
3318 mds
->locker
->check_inode_max_size(cur
);
3320 // make sure this inode gets into the journal
3321 if (cur
->is_auth() && cur
->last
== CEPH_NOSNAP
&&
3322 !cur
->item_open_file
.is_on_list()) {
3323 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
3324 EOpen
*le
= new EOpen(mds
->mdlog
);
3325 mdlog
->start_entry(le
);
3326 le
->add_clean_inode(cur
);
3327 ls
->open_files
.push_back(&cur
->item_open_file
);
3328 mdlog
->submit_entry(le
);
3332 if (cmode
& CEPH_FILE_MODE_WR
)
3333 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), cur
, META_POP_IWR
);
3335 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), cur
, META_POP_IRD
,
3336 mdr
->client_request
->get_source().num());
3339 if (req
->get_dentry_wanted()) {
3340 assert(mdr
->dn
[0].size());
3341 dn
= mdr
->dn
[0].back();
3346 respond_to_request(mdr
, 0);
3349 class C_MDS_openc_finish
: public ServerLogContext
{
3354 C_MDS_openc_finish(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CInode
*ni
, snapid_t f
) :
3355 ServerLogContext(s
, r
), dn(d
), newi(ni
), follows(f
) {}
3356 void finish(int r
) override
{
3359 dn
->pop_projected_linkage();
3361 // dirty inode, dn, dir
3362 newi
->inode
.version
--; // a bit hacky, see C_MDS_mknod_finish
3363 newi
->mark_dirty(newi
->inode
.version
+1, mdr
->ls
);
3364 newi
->_mark_dirty_parent(mdr
->ls
, true);
3368 get_mds()->locker
->share_inode_max_size(newi
);
3370 MDRequestRef null_ref
;
3371 get_mds()->mdcache
->send_dentry_link(dn
, null_ref
);
3373 get_mds()->balancer
->hit_inode(mdr
->get_mds_stamp(), newi
, META_POP_IWR
);
3375 server
->respond_to_request(mdr
, 0);
3377 assert(g_conf
->mds_kill_openc_at
!= 1);
3381 /* This function takes responsibility for the passed mdr*/
3382 void Server::handle_client_openc(MDRequestRef
& mdr
)
3384 MClientRequest
*req
= mdr
->client_request
;
3385 client_t client
= mdr
->get_client();
3387 dout(7) << "open w/ O_CREAT on " << req
->get_filepath() << dendl
;
3389 int cmode
= ceph_flags_to_mode(req
->head
.args
.open
.flags
);
3391 respond_to_request(mdr
, -EINVAL
);
3395 bool excl
= req
->head
.args
.open
.flags
& CEPH_O_EXCL
;
3398 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, req
->get_filepath(),
3399 &mdr
->dn
[0], NULL
, MDS_TRAVERSE_FORWARD
);
3403 handle_client_open(mdr
);
3406 if (r
< 0 && r
!= -ENOENT
) {
3408 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
3409 MDSInternalContextBase
*c
= new C_MDS_TryFindInode(this, mdr
);
3410 mdcache
->find_ino_peers(req
->get_filepath().get_ino(), c
);
3412 dout(10) << "FAIL on error " << r
<< dendl
;
3413 respond_to_request(mdr
, r
);
3419 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3420 file_layout_t
*dir_layout
= NULL
;
3421 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
,
3422 !excl
, false, false, &dir_layout
);
3424 if (mdr
->snapid
!= CEPH_NOSNAP
) {
3425 respond_to_request(mdr
, -EROFS
);
3429 file_layout_t layout
;
3431 layout
= *dir_layout
;
3433 layout
= mdcache
->default_file_layout
;
3435 // What kind of client caps are required to complete this operation
3436 uint64_t access
= MAY_WRITE
;
3438 const auto default_layout
= layout
;
3440 // fill in any special params from client
3441 if (req
->head
.args
.open
.stripe_unit
)
3442 layout
.stripe_unit
= req
->head
.args
.open
.stripe_unit
;
3443 if (req
->head
.args
.open
.stripe_count
)
3444 layout
.stripe_count
= req
->head
.args
.open
.stripe_count
;
3445 if (req
->head
.args
.open
.object_size
)
3446 layout
.object_size
= req
->head
.args
.open
.object_size
;
3447 if (req
->get_connection()->has_feature(CEPH_FEATURE_CREATEPOOLID
) &&
3448 (__s32
)req
->head
.args
.open
.pool
>= 0) {
3449 layout
.pool_id
= req
->head
.args
.open
.pool
;
3451 // make sure we have as new a map as the client
3452 if (req
->get_mdsmap_epoch() > mds
->mdsmap
->get_epoch()) {
3453 mds
->wait_for_mdsmap(req
->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache
, mdr
));
3458 // If client doesn't have capability to modify layout pools, then
3459 // only permit this request if the requested pool matches what the
3460 // file would have inherited anyway from its parent.
3461 if (default_layout
!= layout
) {
3462 access
|= MAY_SET_VXATTR
;
3465 if (!layout
.is_valid()) {
3466 dout(10) << " invalid initial file layout" << dendl
;
3467 respond_to_request(mdr
, -EINVAL
);
3470 if (!mds
->mdsmap
->is_data_pool(layout
.pool_id
)) {
3471 dout(10) << " invalid data pool " << layout
.pool_id
<< dendl
;
3472 respond_to_request(mdr
, -EINVAL
);
3477 CDir
*dir
= dn
->get_dir();
3478 CInode
*diri
= dir
->get_inode();
3479 rdlocks
.insert(&diri
->authlock
);
3480 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3483 if (!check_access(mdr
, diri
, access
))
3486 if (!check_fragment_space(mdr
, dir
))
3489 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
3491 if (!dnl
->is_null()) {
3493 assert(req
->head
.args
.open
.flags
& CEPH_O_EXCL
);
3494 dout(10) << "O_EXCL, target exists, failing with -EEXIST" << dendl
;
3495 mdr
->tracei
= dnl
->get_inode();
3497 respond_to_request(mdr
, -EEXIST
);
3502 SnapRealm
*realm
= diri
->find_snaprealm(); // use directory's realm; inode isn't attached yet.
3503 snapid_t follows
= realm
->get_newest_seq();
3505 CInode
*in
= prepare_new_inode(mdr
, dn
->get_dir(), inodeno_t(req
->head
.ino
),
3506 req
->head
.args
.open
.mode
| S_IFREG
, &layout
);
3510 dn
->push_projected_linkage(in
);
3512 in
->inode
.version
= dn
->pre_dirty();
3513 if (layout
.pool_id
!= mdcache
->default_file_layout
.pool_id
)
3514 in
->inode
.add_old_pool(mdcache
->default_file_layout
.pool_id
);
3515 in
->inode
.update_backtrace();
3516 if (cmode
& CEPH_FILE_MODE_WR
) {
3517 in
->inode
.client_ranges
[client
].range
.first
= 0;
3518 in
->inode
.client_ranges
[client
].range
.last
= in
->inode
.get_layout_size_increment();
3519 in
->inode
.client_ranges
[client
].follows
= follows
;
3521 in
->inode
.rstat
.rfiles
= 1;
3523 assert(dn
->first
== follows
+1);
3524 in
->first
= dn
->first
;
3527 mdr
->ls
= mdlog
->get_current_segment();
3528 EUpdate
*le
= new EUpdate(mdlog
, "openc");
3529 mdlog
->start_entry(le
);
3530 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
3531 journal_allocated_inos(mdr
, &le
->metablob
);
3532 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, dn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
3533 le
->metablob
.add_primary_dentry(dn
, in
, true, true, true);
3536 mds
->locker
->issue_new_caps(in
, cmode
, mdr
->session
, realm
, req
->is_replay());
3537 in
->authlock
.set_state(LOCK_EXCL
);
3538 in
->xattrlock
.set_state(LOCK_EXCL
);
3540 // make sure this inode gets into the journal
3541 le
->metablob
.add_opened_ino(in
->ino());
3542 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
3543 ls
->open_files
.push_back(&in
->item_open_file
);
3545 C_MDS_openc_finish
*fin
= new C_MDS_openc_finish(this, mdr
, dn
, in
, follows
);
3547 if (mdr
->client_request
->get_connection()->has_feature(CEPH_FEATURE_REPLY_CREATE_INODE
)) {
3548 dout(10) << "adding ino to reply to indicate inode was created" << dendl
;
3549 // add the file created flag onto the reply if create_flags features is supported
3550 ::encode(in
->inode
.ino
, mdr
->reply_extra_bl
);
3553 journal_and_reply(mdr
, in
, dn
, le
, fin
);
3555 // We hit_dir (via hit_inode) in our finish callback, but by then we might
3556 // have overshot the split size (multiple opencs in flight), so here is
3557 // an early chance to split the dir if this openc makes it oversized.
3558 mds
->balancer
->maybe_fragment(dir
, false);
3563 void Server::handle_client_readdir(MDRequestRef
& mdr
)
3565 MClientRequest
*req
= mdr
->client_request
;
3566 client_t client
= req
->get_source().num();
3567 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3568 CInode
*diri
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, false, true);
3571 // it's a directory, right?
3572 if (!diri
->is_dir()) {
3574 dout(10) << "reply to " << *req
<< " readdir -ENOTDIR" << dendl
;
3575 respond_to_request(mdr
, -ENOTDIR
);
3579 rdlocks
.insert(&diri
->filelock
);
3580 rdlocks
.insert(&diri
->dirfragtreelock
);
3582 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
3585 if (!check_access(mdr
, diri
, MAY_READ
))
3589 frag_t fg
= (__u32
)req
->head
.args
.readdir
.frag
;
3590 unsigned req_flags
= (__u32
)req
->head
.args
.readdir
.flags
;
3591 string offset_str
= req
->get_path2();
3593 __u32 offset_hash
= 0;
3594 if (!offset_str
.empty())
3595 offset_hash
= ceph_frag_value(diri
->hash_dentry_name(offset_str
));
3597 offset_hash
= (__u32
)req
->head
.args
.readdir
.offset_hash
;
3599 dout(10) << " frag " << fg
<< " offset '" << offset_str
<< "'"
3600 << " offset_hash " << offset_hash
<< " flags " << req_flags
<< dendl
;
3602 // does the frag exist?
3603 if (diri
->dirfragtree
[fg
.value()] != fg
) {
3605 if (req_flags
& CEPH_READDIR_REPLY_BITFLAGS
) {
3606 if (fg
.contains((unsigned)offset_hash
)) {
3607 newfg
= diri
->dirfragtree
[offset_hash
];
3609 // client actually wants next frag
3610 newfg
= diri
->dirfragtree
[fg
.value()];
3614 newfg
= diri
->dirfragtree
[fg
.value()];
3616 dout(10) << " adjust frag " << fg
<< " -> " << newfg
<< " " << diri
->dirfragtree
<< dendl
;
3620 CDir
*dir
= try_open_auth_dirfrag(diri
, fg
, mdr
);
3624 dout(10) << "handle_client_readdir on " << *dir
<< dendl
;
3625 assert(dir
->is_auth());
3627 if (!dir
->is_complete()) {
3628 if (dir
->is_frozen()) {
3629 dout(7) << "dir is frozen " << *dir
<< dendl
;
3630 mds
->locker
->drop_locks(mdr
.get());
3631 mdr
->drop_local_auth_pins();
3632 dir
->add_waiter(CDir::WAIT_UNFREEZE
, new C_MDS_RetryRequest(mdcache
, mdr
));
3636 dout(10) << " incomplete dir contents for readdir on " << *dir
<< ", fetching" << dendl
;
3637 dir
->fetch(new C_MDS_RetryRequest(mdcache
, mdr
), true);
3641 #ifdef MDS_VERIFY_FRAGSTAT
3642 dir
->verify_fragstat();
3645 utime_t now
= ceph_clock_now();
3646 mdr
->set_mds_stamp(now
);
3648 snapid_t snapid
= mdr
->snapid
;
3649 dout(10) << "snapid " << snapid
<< dendl
;
3651 SnapRealm
*realm
= diri
->find_snaprealm();
3653 unsigned max
= req
->head
.args
.readdir
.max_entries
;
3655 max
= dir
->get_num_any(); // whatever, something big.
3656 unsigned max_bytes
= req
->head
.args
.readdir
.max_bytes
;
3658 // make sure at least one item can be encoded
3659 max_bytes
= (512 << 10) + g_conf
->mds_max_xattr_pairs_size
;
3663 dir
->encode_dirstat(dirbl
, mds
->get_nodeid());
3665 // count bytes available.
3666 // this isn't perfect, but we should capture the main variable/unbounded size items!
3667 int front_bytes
= dirbl
.length() + sizeof(__u32
) + sizeof(__u8
)*2;
3668 int bytes_left
= max_bytes
- front_bytes
;
3669 bytes_left
-= realm
->get_snap_trace().length();
3671 // build dir contents
3674 bool start
= !offset_hash
&& offset_str
.empty();
3675 // skip all dns < dentry_key_t(snapid, offset_str, offset_hash)
3676 dentry_key_t
skip_key(snapid
, offset_str
.c_str(), offset_hash
);
3677 auto it
= start
? dir
->begin() : dir
->lower_bound(skip_key
);
3678 bool end
= (it
== dir
->end());
3679 for (; !end
&& numfiles
< max
; end
= (it
== dir
->end())) {
3680 CDentry
*dn
= it
->second
;
3683 if (dn
->state_test(CDentry::STATE_PURGING
))
3686 bool dnp
= dn
->use_projected(client
, mdr
);
3687 CDentry::linkage_t
*dnl
= dnp
? dn
->get_projected_linkage() : dn
->get_linkage();
3692 if (dn
->last
< snapid
|| dn
->first
> snapid
) {
3693 dout(20) << "skipping non-overlapping snap " << *dn
<< dendl
;
3698 dentry_key_t
offset_key(dn
->last
, offset_str
.c_str(), offset_hash
);
3699 if (!(offset_key
< dn
->key()))
3703 CInode
*in
= dnl
->get_inode();
3705 if (in
&& in
->ino() == CEPH_INO_CEPH
)
3709 // better for the MDS to do the work, if we think the client will stat any of these files.
3710 if (dnl
->is_remote() && !in
) {
3711 in
= mdcache
->get_inode(dnl
->get_remote_ino());
3713 dn
->link_remote(dnl
, in
);
3714 } else if (dn
->state_test(CDentry::STATE_BADREMOTEINO
)) {
3715 dout(10) << "skipping bad remote ino on " << *dn
<< dendl
;
3718 // touch everything i _do_ have
3719 for (CDir::map_t::iterator p
= dir
->begin(); p
!= dir
->end(); ++p
)
3720 if (!p
->second
->get_linkage()->is_null())
3721 mdcache
->lru
.lru_touch(p
->second
);
3723 // already issued caps and leases, reply immediately.
3724 if (dnbl
.length() > 0) {
3725 mdcache
->open_remote_dentry(dn
, dnp
, new C_MDSInternalNoop
);
3726 dout(10) << " open remote dentry after caps were issued, stopping at "
3727 << dnbl
.length() << " < " << bytes_left
<< dendl
;
3731 mds
->locker
->drop_locks(mdr
.get());
3732 mdr
->drop_local_auth_pins();
3733 mdcache
->open_remote_dentry(dn
, dnp
, new C_MDS_RetryRequest(mdcache
, mdr
));
3739 if ((int)(dnbl
.length() + dn
->name
.length() + sizeof(__u32
) + sizeof(LeaseStat
)) > bytes_left
) {
3740 dout(10) << " ran out of room, stopping at " << dnbl
.length() << " < " << bytes_left
<< dendl
;
3744 unsigned start_len
= dnbl
.length();
3747 dout(12) << "including dn " << *dn
<< dendl
;
3748 ::encode(dn
->name
, dnbl
);
3749 mds
->locker
->issue_client_lease(dn
, client
, dnbl
, now
, mdr
->session
);
3752 dout(12) << "including inode " << *in
<< dendl
;
3753 int r
= in
->encode_inodestat(dnbl
, mdr
->session
, realm
, snapid
, bytes_left
- (int)dnbl
.length());
3755 // chop off dn->name, lease
3756 dout(10) << " ran out of room, stopping at " << start_len
<< " < " << bytes_left
<< dendl
;
3758 keep
.substr_of(dnbl
, 0, start_len
);
3766 mdcache
->lru
.lru_touch(dn
);
3771 flags
= CEPH_READDIR_FRAG_END
;
3773 flags
|= CEPH_READDIR_FRAG_COMPLETE
; // FIXME: what purpose does this serve
3775 // client only understand END and COMPLETE flags ?
3776 if (req_flags
& CEPH_READDIR_REPLY_BITFLAGS
) {
3777 flags
|= CEPH_READDIR_HASH_ORDER
| CEPH_READDIR_OFFSET_HASH
;
3780 // finish final blob
3781 ::encode(numfiles
, dirbl
);
3782 ::encode(flags
, dirbl
);
3783 dirbl
.claim_append(dnbl
);
3786 dout(10) << "reply to " << *req
<< " readdir num=" << numfiles
3787 << " bytes=" << dirbl
.length()
3788 << " start=" << (int)start
3789 << " end=" << (int)end
3791 mdr
->reply_extra_bl
= dirbl
;
3793 // bump popularity. NOTE: this doesn't quite capture it.
3794 mds
->balancer
->hit_dir(now
, dir
, META_POP_IRD
, -1, numfiles
);
3798 respond_to_request(mdr
, 0);
3803 // ===============================================================================
3808 * finisher for basic inode updates
3810 class C_MDS_inode_update_finish
: public ServerLogContext
{
3812 bool truncating_smaller
, changed_ranges
;
3814 C_MDS_inode_update_finish(Server
*s
, MDRequestRef
& r
, CInode
*i
,
3815 bool sm
=false, bool cr
=false) :
3816 ServerLogContext(s
, r
), in(i
), truncating_smaller(sm
), changed_ranges(cr
) { }
3817 void finish(int r
) override
{
3821 in
->pop_and_dirty_projected_inode(mdr
->ls
);
3824 // notify any clients
3825 if (truncating_smaller
&& in
->inode
.is_truncating()) {
3826 get_mds()->locker
->issue_truncate(in
);
3827 get_mds()->mdcache
->truncate_inode(in
, mdr
->ls
);
3830 get_mds()->balancer
->hit_inode(mdr
->get_mds_stamp(), in
, META_POP_IWR
);
3832 server
->respond_to_request(mdr
, 0);
3835 get_mds()->locker
->share_inode_max_size(in
);
3839 void Server::handle_client_file_setlock(MDRequestRef
& mdr
)
3841 MClientRequest
*req
= mdr
->client_request
;
3842 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3844 // get the inode to operate on, and set up any locks needed for that
3845 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
3849 xlocks
.insert(&cur
->flocklock
);
3850 /* acquire_locks will return true if it gets the locks. If it fails,
3851 it will redeliver this request at a later date, so drop the request.
3853 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
)) {
3854 dout(10) << "handle_client_file_setlock could not get locks!" << dendl
;
3858 // copy the lock change into a ceph_filelock so we can store/apply it
3859 ceph_filelock set_lock
;
3860 set_lock
.start
= req
->head
.args
.filelock_change
.start
;
3861 set_lock
.length
= req
->head
.args
.filelock_change
.length
;
3862 set_lock
.client
= req
->get_orig_source().num();
3863 set_lock
.owner
= req
->head
.args
.filelock_change
.owner
;
3864 set_lock
.pid
= req
->head
.args
.filelock_change
.pid
;
3865 set_lock
.type
= req
->head
.args
.filelock_change
.type
;
3866 bool will_wait
= req
->head
.args
.filelock_change
.wait
;
3868 dout(10) << "handle_client_file_setlock: " << set_lock
<< dendl
;
3870 ceph_lock_state_t
*lock_state
= NULL
;
3871 bool interrupt
= false;
3873 // get the appropriate lock state
3874 switch (req
->head
.args
.filelock_change
.rule
) {
3875 case CEPH_LOCK_FLOCK_INTR
:
3878 case CEPH_LOCK_FLOCK
:
3879 lock_state
= cur
->get_flock_lock_state();
3882 case CEPH_LOCK_FCNTL_INTR
:
3885 case CEPH_LOCK_FCNTL
:
3886 lock_state
= cur
->get_fcntl_lock_state();
3890 dout(10) << "got unknown lock type " << set_lock
.type
3891 << ", dropping request!" << dendl
;
3892 respond_to_request(mdr
, -EOPNOTSUPP
);
3896 dout(10) << " state prior to lock change: " << *lock_state
<< dendl
;
3897 if (CEPH_LOCK_UNLOCK
== set_lock
.type
) {
3898 list
<ceph_filelock
> activated_locks
;
3899 list
<MDSInternalContextBase
*> waiters
;
3900 if (lock_state
->is_waiting(set_lock
)) {
3901 dout(10) << " unlock removing waiting lock " << set_lock
<< dendl
;
3902 lock_state
->remove_waiting(set_lock
);
3903 cur
->take_waiting(CInode::WAIT_FLOCK
, waiters
);
3904 } else if (!interrupt
) {
3905 dout(10) << " unlock attempt on " << set_lock
<< dendl
;
3906 lock_state
->remove_lock(set_lock
, activated_locks
);
3907 cur
->take_waiting(CInode::WAIT_FLOCK
, waiters
);
3909 mds
->queue_waiters(waiters
);
3911 respond_to_request(mdr
, 0);
3913 dout(10) << " lock attempt on " << set_lock
<< dendl
;
3914 bool deadlock
= false;
3915 if (mdr
->more()->flock_was_waiting
&&
3916 !lock_state
->is_waiting(set_lock
)) {
3917 dout(10) << " was waiting for lock but not anymore, must have been canceled " << set_lock
<< dendl
;
3918 respond_to_request(mdr
, -EINTR
);
3919 } else if (!lock_state
->add_lock(set_lock
, will_wait
, mdr
->more()->flock_was_waiting
, &deadlock
)) {
3920 dout(10) << " it failed on this attempt" << dendl
;
3921 // couldn't set lock right now
3923 respond_to_request(mdr
, -EDEADLK
);
3924 } else if (!will_wait
) {
3925 respond_to_request(mdr
, -EWOULDBLOCK
);
3927 dout(10) << " added to waiting list" << dendl
;
3928 assert(lock_state
->is_waiting(set_lock
));
3929 mdr
->more()->flock_was_waiting
= true;
3930 mds
->locker
->drop_locks(mdr
.get());
3931 mdr
->drop_local_auth_pins();
3932 cur
->add_waiter(CInode::WAIT_FLOCK
, new C_MDS_RetryRequest(mdcache
, mdr
));
3935 respond_to_request(mdr
, 0);
3937 dout(10) << " state after lock change: " << *lock_state
<< dendl
;
3940 void Server::handle_client_file_readlock(MDRequestRef
& mdr
)
3942 MClientRequest
*req
= mdr
->client_request
;
3943 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3945 // get the inode to operate on, and set up any locks needed for that
3946 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
3950 /* acquire_locks will return true if it gets the locks. If it fails,
3951 it will redeliver this request at a later date, so drop the request.
3953 rdlocks
.insert(&cur
->flocklock
);
3954 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
)) {
3955 dout(10) << "handle_client_file_readlock could not get locks!" << dendl
;
3959 // copy the lock change into a ceph_filelock so we can store/apply it
3960 ceph_filelock checking_lock
;
3961 checking_lock
.start
= req
->head
.args
.filelock_change
.start
;
3962 checking_lock
.length
= req
->head
.args
.filelock_change
.length
;
3963 checking_lock
.client
= req
->get_orig_source().num();
3964 checking_lock
.owner
= req
->head
.args
.filelock_change
.owner
;
3965 checking_lock
.pid
= req
->head
.args
.filelock_change
.pid
;
3966 checking_lock
.type
= req
->head
.args
.filelock_change
.type
;
3968 // get the appropriate lock state
3969 ceph_lock_state_t
*lock_state
= NULL
;
3970 switch (req
->head
.args
.filelock_change
.rule
) {
3971 case CEPH_LOCK_FLOCK
:
3972 lock_state
= cur
->get_flock_lock_state();
3975 case CEPH_LOCK_FCNTL
:
3976 lock_state
= cur
->get_fcntl_lock_state();
3980 dout(10) << "got unknown lock type " << checking_lock
.type
<< dendl
;
3981 respond_to_request(mdr
, -EINVAL
);
3984 lock_state
->look_for_lock(checking_lock
);
3987 ::encode(checking_lock
, lock_bl
);
3989 mdr
->reply_extra_bl
= lock_bl
;
3990 respond_to_request(mdr
, 0);
3993 void Server::handle_client_setattr(MDRequestRef
& mdr
)
3995 MClientRequest
*req
= mdr
->client_request
;
3996 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
3997 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
4000 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4001 respond_to_request(mdr
, -EROFS
);
4004 if (cur
->ino() < MDS_INO_SYSTEM_BASE
&& !cur
->is_base()) {
4005 respond_to_request(mdr
, -EPERM
);
4009 __u32 mask
= req
->head
.args
.setattr
.mask
;
4010 __u32 access_mask
= MAY_WRITE
;
4013 if (mask
& (CEPH_SETATTR_MODE
|CEPH_SETATTR_UID
|CEPH_SETATTR_GID
|CEPH_SETATTR_BTIME
|CEPH_SETATTR_KILL_SGUID
))
4014 xlocks
.insert(&cur
->authlock
);
4015 if (mask
& (CEPH_SETATTR_MTIME
|CEPH_SETATTR_ATIME
|CEPH_SETATTR_SIZE
))
4016 xlocks
.insert(&cur
->filelock
);
4017 if (mask
& CEPH_SETATTR_CTIME
)
4018 wrlocks
.insert(&cur
->versionlock
);
4020 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4023 if ((mask
& CEPH_SETATTR_UID
) && (cur
->inode
.uid
!= req
->head
.args
.setattr
.uid
))
4024 access_mask
|= MAY_CHOWN
;
4026 if ((mask
& CEPH_SETATTR_GID
) && (cur
->inode
.gid
!= req
->head
.args
.setattr
.gid
))
4027 access_mask
|= MAY_CHGRP
;
4029 if (!check_access(mdr
, cur
, access_mask
))
4032 // trunc from bigger -> smaller?
4033 inode_t
*pi
= cur
->get_projected_inode();
4035 uint64_t old_size
= MAX(pi
->size
, req
->head
.args
.setattr
.old_size
);
4037 // ENOSPC on growing file while full, but allow shrinks
4038 if (is_full
&& req
->head
.args
.setattr
.size
> old_size
) {
4039 dout(20) << __func__
<< ": full, responding ENOSPC to setattr with larger size" << dendl
;
4040 respond_to_request(mdr
, -ENOSPC
);
4044 bool truncating_smaller
= false;
4045 if (mask
& CEPH_SETATTR_SIZE
) {
4046 truncating_smaller
= req
->head
.args
.setattr
.size
< old_size
;
4047 if (truncating_smaller
&& pi
->is_truncating()) {
4048 dout(10) << " waiting for pending truncate from " << pi
->truncate_from
4049 << " to " << pi
->truncate_size
<< " to complete on " << *cur
<< dendl
;
4050 mds
->locker
->drop_locks(mdr
.get());
4051 mdr
->drop_local_auth_pins();
4052 cur
->add_waiter(CInode::WAIT_TRUNC
, new C_MDS_RetryRequest(mdcache
, mdr
));
4057 bool changed_ranges
= false;
4060 mdr
->ls
= mdlog
->get_current_segment();
4061 EUpdate
*le
= new EUpdate(mdlog
, "setattr");
4062 mdlog
->start_entry(le
);
4064 pi
= cur
->project_inode();
4066 if (mask
& CEPH_SETATTR_UID
)
4067 pi
->uid
= req
->head
.args
.setattr
.uid
;
4068 if (mask
& CEPH_SETATTR_GID
)
4069 pi
->gid
= req
->head
.args
.setattr
.gid
;
4071 if (mask
& CEPH_SETATTR_MODE
)
4072 pi
->mode
= (pi
->mode
& ~07777) | (req
->head
.args
.setattr
.mode
& 07777);
4073 else if ((mask
& (CEPH_SETATTR_UID
|CEPH_SETATTR_GID
|CEPH_SETATTR_KILL_SGUID
)) &&
4074 S_ISREG(pi
->mode
) &&
4075 (pi
->mode
& (S_IXUSR
|S_IXGRP
|S_IXOTH
))) {
4076 pi
->mode
&= ~(S_ISUID
|S_ISGID
);
4079 if (mask
& CEPH_SETATTR_MTIME
)
4080 pi
->mtime
= req
->head
.args
.setattr
.mtime
;
4081 if (mask
& CEPH_SETATTR_ATIME
)
4082 pi
->atime
= req
->head
.args
.setattr
.atime
;
4083 if (mask
& CEPH_SETATTR_BTIME
)
4084 pi
->btime
= req
->head
.args
.setattr
.btime
;
4085 if (mask
& (CEPH_SETATTR_ATIME
| CEPH_SETATTR_MTIME
| CEPH_SETATTR_BTIME
))
4086 pi
->time_warp_seq
++; // maybe not a timewarp, but still a serialization point.
4087 if (mask
& CEPH_SETATTR_SIZE
) {
4088 if (truncating_smaller
) {
4089 pi
->truncate(old_size
, req
->head
.args
.setattr
.size
);
4090 le
->metablob
.add_truncate_start(cur
->ino());
4092 pi
->size
= req
->head
.args
.setattr
.size
;
4093 pi
->rstat
.rbytes
= pi
->size
;
4095 pi
->mtime
= mdr
->get_op_stamp();
4097 // adjust client's max_size?
4098 map
<client_t
,client_writeable_range_t
> new_ranges
;
4099 bool max_increased
= false;
4100 mds
->locker
->calc_new_client_ranges(cur
, pi
->size
, &new_ranges
, &max_increased
);
4101 if (pi
->client_ranges
!= new_ranges
) {
4102 dout(10) << " client_ranges " << pi
->client_ranges
<< " -> " << new_ranges
<< dendl
;
4103 pi
->client_ranges
= new_ranges
;
4104 changed_ranges
= true;
4108 pi
->version
= cur
->pre_dirty();
4109 pi
->ctime
= mdr
->get_op_stamp();
4113 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4114 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4115 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4117 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
,
4118 truncating_smaller
, changed_ranges
));
4120 // flush immediately if there are readers/writers waiting
4121 if (xlocks
.count(&cur
->filelock
) &&
4122 (cur
->get_caps_wanted() & (CEPH_CAP_FILE_RD
|CEPH_CAP_FILE_WR
)))
4123 mds
->mdlog
->flush();
4126 /* Takes responsibility for mdr */
4127 void Server::do_open_truncate(MDRequestRef
& mdr
, int cmode
)
4129 CInode
*in
= mdr
->in
[0];
4130 client_t client
= mdr
->get_client();
4133 dout(10) << "do_open_truncate " << *in
<< dendl
;
4135 SnapRealm
*realm
= in
->find_snaprealm();
4136 mds
->locker
->issue_new_caps(in
, cmode
, mdr
->session
, realm
, mdr
->client_request
->is_replay());
4138 mdr
->ls
= mdlog
->get_current_segment();
4139 EUpdate
*le
= new EUpdate(mdlog
, "open_truncate");
4140 mdlog
->start_entry(le
);
4143 inode_t
*pi
= in
->project_inode();
4144 pi
->version
= in
->pre_dirty();
4145 pi
->mtime
= pi
->ctime
= mdr
->get_op_stamp();
4148 uint64_t old_size
= MAX(pi
->size
, mdr
->client_request
->head
.args
.open
.old_size
);
4150 pi
->truncate(old_size
, 0);
4151 le
->metablob
.add_truncate_start(in
->ino());
4154 bool changed_ranges
= false;
4155 if (cmode
& CEPH_FILE_MODE_WR
) {
4156 pi
->client_ranges
[client
].range
.first
= 0;
4157 pi
->client_ranges
[client
].range
.last
= pi
->get_layout_size_increment();
4158 pi
->client_ranges
[client
].follows
= in
->find_snaprealm()->get_newest_seq();
4159 changed_ranges
= true;
4162 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
4164 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, 0, PREDIRTY_PRIMARY
);
4165 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, in
);
4167 // make sure ino gets into the journal
4168 le
->metablob
.add_opened_ino(in
->ino());
4169 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
4170 ls
->open_files
.push_back(&in
->item_open_file
);
4172 mdr
->o_trunc
= true;
4175 if (mdr
->client_request
->get_dentry_wanted()) {
4176 assert(mdr
->dn
[0].size());
4177 dn
= mdr
->dn
[0].back();
4180 journal_and_reply(mdr
, in
, dn
, le
, new C_MDS_inode_update_finish(this, mdr
, in
, old_size
> 0,
4182 // Although the `open` part can give an early reply, the truncation won't
4183 // happen until our EUpdate is persistent, to give the client a prompt
4184 // response we must also flush that event.
4189 /* This function cleans up the passed mdr */
4190 void Server::handle_client_setlayout(MDRequestRef
& mdr
)
4192 MClientRequest
*req
= mdr
->client_request
;
4193 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4194 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
4197 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4198 respond_to_request(mdr
, -EROFS
);
4201 if (!cur
->is_file()) {
4202 respond_to_request(mdr
, -EINVAL
);
4205 if (cur
->get_projected_inode()->size
||
4206 cur
->get_projected_inode()->truncate_seq
> 1) {
4207 respond_to_request(mdr
, -ENOTEMPTY
);
4212 file_layout_t layout
= cur
->get_projected_inode()->layout
;
4213 // save existing layout for later
4214 const auto old_layout
= layout
;
4216 int access
= MAY_WRITE
;
4218 if (req
->head
.args
.setlayout
.layout
.fl_object_size
> 0)
4219 layout
.object_size
= req
->head
.args
.setlayout
.layout
.fl_object_size
;
4220 if (req
->head
.args
.setlayout
.layout
.fl_stripe_unit
> 0)
4221 layout
.stripe_unit
= req
->head
.args
.setlayout
.layout
.fl_stripe_unit
;
4222 if (req
->head
.args
.setlayout
.layout
.fl_stripe_count
> 0)
4223 layout
.stripe_count
=req
->head
.args
.setlayout
.layout
.fl_stripe_count
;
4224 if (req
->head
.args
.setlayout
.layout
.fl_pg_pool
> 0) {
4225 layout
.pool_id
= req
->head
.args
.setlayout
.layout
.fl_pg_pool
;
4227 // make sure we have as new a map as the client
4228 if (req
->get_mdsmap_epoch() > mds
->mdsmap
->get_epoch()) {
4229 mds
->wait_for_mdsmap(req
->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache
, mdr
));
4234 // Don't permit layout modifications without 'p' caps
4235 if (layout
!= old_layout
) {
4236 access
|= MAY_SET_VXATTR
;
4239 if (!layout
.is_valid()) {
4240 dout(10) << "bad layout" << dendl
;
4241 respond_to_request(mdr
, -EINVAL
);
4244 if (!mds
->mdsmap
->is_data_pool(layout
.pool_id
)) {
4245 dout(10) << " invalid data pool " << layout
.pool_id
<< dendl
;
4246 respond_to_request(mdr
, -EINVAL
);
4250 xlocks
.insert(&cur
->filelock
);
4251 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4254 if (!check_access(mdr
, cur
, access
))
4258 inode_t
*pi
= cur
->project_inode();
4259 pi
->layout
= layout
;
4260 // add the old pool to the inode
4261 pi
->add_old_pool(old_layout
.pool_id
);
4262 pi
->version
= cur
->pre_dirty();
4263 pi
->ctime
= mdr
->get_op_stamp();
4267 mdr
->ls
= mdlog
->get_current_segment();
4268 EUpdate
*le
= new EUpdate(mdlog
, "setlayout");
4269 mdlog
->start_entry(le
);
4270 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4271 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4272 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4274 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4277 void Server::handle_client_setdirlayout(MDRequestRef
& mdr
)
4279 MClientRequest
*req
= mdr
->client_request
;
4280 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4281 file_layout_t
*dir_layout
= NULL
;
4282 CInode
*cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true, false, &dir_layout
);
4285 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4286 respond_to_request(mdr
, -EROFS
);
4290 if (!cur
->is_dir()) {
4291 respond_to_request(mdr
, -ENOTDIR
);
4295 xlocks
.insert(&cur
->policylock
);
4296 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4300 const inode_t
*old_pi
= cur
->get_projected_inode();
4301 file_layout_t layout
;
4302 if (old_pi
->has_layout())
4303 layout
= old_pi
->layout
;
4304 else if (dir_layout
)
4305 layout
= *dir_layout
;
4307 layout
= mdcache
->default_file_layout
;
4309 // Level of access required to complete
4310 int access
= MAY_WRITE
;
4312 const auto old_layout
= layout
;
4314 if (req
->head
.args
.setlayout
.layout
.fl_object_size
> 0)
4315 layout
.object_size
= req
->head
.args
.setlayout
.layout
.fl_object_size
;
4316 if (req
->head
.args
.setlayout
.layout
.fl_stripe_unit
> 0)
4317 layout
.stripe_unit
= req
->head
.args
.setlayout
.layout
.fl_stripe_unit
;
4318 if (req
->head
.args
.setlayout
.layout
.fl_stripe_count
> 0)
4319 layout
.stripe_count
=req
->head
.args
.setlayout
.layout
.fl_stripe_count
;
4320 if (req
->head
.args
.setlayout
.layout
.fl_pg_pool
> 0) {
4321 layout
.pool_id
= req
->head
.args
.setlayout
.layout
.fl_pg_pool
;
4322 // make sure we have as new a map as the client
4323 if (req
->get_mdsmap_epoch() > mds
->mdsmap
->get_epoch()) {
4324 mds
->wait_for_mdsmap(req
->get_mdsmap_epoch(), new C_MDS_RetryRequest(mdcache
, mdr
));
4329 if (layout
!= old_layout
) {
4330 access
|= MAY_SET_VXATTR
;
4333 if (!layout
.is_valid()) {
4334 dout(10) << "bad layout" << dendl
;
4335 respond_to_request(mdr
, -EINVAL
);
4338 if (!mds
->mdsmap
->is_data_pool(layout
.pool_id
)) {
4339 dout(10) << " invalid data pool " << layout
.pool_id
<< dendl
;
4340 respond_to_request(mdr
, -EINVAL
);
4344 if (!check_access(mdr
, cur
, access
))
4347 inode_t
*pi
= cur
->project_inode();
4348 pi
->layout
= layout
;
4349 pi
->version
= cur
->pre_dirty();
4352 mdr
->ls
= mdlog
->get_current_segment();
4353 EUpdate
*le
= new EUpdate(mdlog
, "setlayout");
4354 mdlog
->start_entry(le
);
4355 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4356 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4357 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4359 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4364 int Server::parse_layout_vxattr(string name
, string value
, const OSDMap
& osdmap
,
4365 file_layout_t
*layout
, bool validate
)
4367 dout(20) << "parse_layout_vxattr name " << name
<< " value '" << value
<< "'" << dendl
;
4369 if (name
== "layout") {
4370 string::iterator begin
= value
.begin();
4371 string::iterator end
= value
.end();
4372 keys_and_values
<string::iterator
> p
; // create instance of parser
4373 std::map
<string
, string
> m
; // map to receive results
4374 if (!qi::parse(begin
, end
, p
, m
)) { // returns true if successful
4377 string
left(begin
, end
);
4378 dout(10) << " parsed " << m
<< " left '" << left
<< "'" << dendl
;
4381 for (map
<string
,string
>::iterator q
= m
.begin(); q
!= m
.end(); ++q
) {
4382 // Skip validation on each attr, we do it once at the end (avoid
4383 // rejecting intermediate states if the overall result is ok)
4384 int r
= parse_layout_vxattr(string("layout.") + q
->first
, q
->second
,
4385 osdmap
, layout
, false);
4389 } else if (name
== "layout.object_size") {
4390 layout
->object_size
= boost::lexical_cast
<unsigned>(value
);
4391 } else if (name
== "layout.stripe_unit") {
4392 layout
->stripe_unit
= boost::lexical_cast
<unsigned>(value
);
4393 } else if (name
== "layout.stripe_count") {
4394 layout
->stripe_count
= boost::lexical_cast
<unsigned>(value
);
4395 } else if (name
== "layout.pool") {
4397 layout
->pool_id
= boost::lexical_cast
<unsigned>(value
);
4398 } catch (boost::bad_lexical_cast
const&) {
4399 int64_t pool
= osdmap
.lookup_pg_pool_name(value
);
4401 dout(10) << " unknown pool " << value
<< dendl
;
4404 layout
->pool_id
= pool
;
4406 } else if (name
== "layout.pool_namespace") {
4407 layout
->pool_ns
= value
;
4409 dout(10) << " unknown layout vxattr " << name
<< dendl
;
4412 } catch (boost::bad_lexical_cast
const&) {
4413 dout(10) << "bad vxattr value, unable to parse int for " << name
<< dendl
;
4417 if (validate
&& !layout
->is_valid()) {
4418 dout(10) << "bad layout" << dendl
;
4421 if (!mds
->mdsmap
->is_data_pool(layout
->pool_id
)) {
4422 dout(10) << " invalid data pool " << layout
->pool_id
<< dendl
;
4428 int Server::parse_quota_vxattr(string name
, string value
, quota_info_t
*quota
)
4430 dout(20) << "parse_quota_vxattr name " << name
<< " value '" << value
<< "'" << dendl
;
4432 if (name
== "quota") {
4433 string::iterator begin
= value
.begin();
4434 string::iterator end
= value
.end();
4435 keys_and_values
<string::iterator
> p
; // create instance of parser
4436 std::map
<string
, string
> m
; // map to receive results
4437 if (!qi::parse(begin
, end
, p
, m
)) { // returns true if successful
4440 string
left(begin
, end
);
4441 dout(10) << " parsed " << m
<< " left '" << left
<< "'" << dendl
;
4444 for (map
<string
,string
>::iterator q
= m
.begin(); q
!= m
.end(); ++q
) {
4445 int r
= parse_quota_vxattr(string("quota.") + q
->first
, q
->second
, quota
);
4449 } else if (name
== "quota.max_bytes") {
4450 int64_t q
= boost::lexical_cast
<int64_t>(value
);
4453 quota
->max_bytes
= q
;
4454 } else if (name
== "quota.max_files") {
4455 int64_t q
= boost::lexical_cast
<int64_t>(value
);
4458 quota
->max_files
= q
;
4460 dout(10) << " unknown quota vxattr " << name
<< dendl
;
4463 } catch (boost::bad_lexical_cast
const&) {
4464 dout(10) << "bad vxattr value, unable to parse int for " << name
<< dendl
;
4468 if (!quota
->is_valid()) {
4469 dout(10) << "bad quota" << dendl
;
4476 * Verify that the file layout attribute carried by client
4477 * is well-formatted.
4478 * Return 0 on success, otherwise this function takes
4479 * responsibility for the passed mdr.
4481 int Server::check_layout_vxattr(MDRequestRef
& mdr
,
4484 file_layout_t
*layout
)
4486 MClientRequest
*req
= mdr
->client_request
;
4490 mds
->objecter
->with_osdmap([&](const OSDMap
& osdmap
) {
4491 r
= parse_layout_vxattr(name
, value
, osdmap
, layout
);
4492 epoch
= osdmap
.get_epoch();
4497 // we don't have the specified pool, make sure our map
4498 // is newer than or as new as the client.
4499 epoch_t req_epoch
= req
->get_osdmap_epoch();
4501 if (req_epoch
> epoch
) {
4503 // well, our map is older. consult mds.
4504 Context
*fin
= new C_IO_Wrapper(mds
, new C_MDS_RetryRequest(mdcache
, mdr
));
4506 if (!mds
->objecter
->wait_for_map(req_epoch
, fin
))
4507 return r
; // wait, fin will retry this request later
4511 // now we have at least as new a map as the client, try again.
4512 mds
->objecter
->with_osdmap([&](const OSDMap
& osdmap
) {
4513 r
= parse_layout_vxattr(name
, value
, osdmap
, layout
);
4514 epoch
= osdmap
.get_epoch();
4517 assert(epoch
>= req_epoch
); // otherwise wait_for_map() told a lie
4519 } else if (req_epoch
== 0 && !mdr
->waited_for_osdmap
) {
4521 // For compatibility with client w/ old code, we still need get the
4522 // latest map. One day if COMPACT_VERSION of MClientRequest >=3,
4523 // we can remove those code.
4524 mdr
->waited_for_osdmap
= true;
4525 mds
->objecter
->wait_for_latest_osdmap(new C_IO_Wrapper(
4526 mds
, new C_MDS_RetryRequest(mdcache
, mdr
)));
4536 respond_to_request(mdr
, r
);
4544 void Server::handle_set_vxattr(MDRequestRef
& mdr
, CInode
*cur
,
4545 file_layout_t
*dir_layout
,
4546 set
<SimpleLock
*> rdlocks
,
4547 set
<SimpleLock
*> wrlocks
,
4548 set
<SimpleLock
*> xlocks
)
4550 MClientRequest
*req
= mdr
->client_request
;
4551 string
name(req
->get_path2());
4552 bufferlist bl
= req
->get_data();
4553 string
value (bl
.c_str(), bl
.length());
4554 dout(10) << "handle_set_vxattr " << name
4555 << " val " << value
.length()
4556 << " bytes on " << *cur
4562 if (!check_access(mdr
, cur
, MAY_SET_VXATTR
)) {
4566 if (name
.compare(0, 15, "ceph.dir.layout") == 0) {
4567 if (!cur
->is_dir()) {
4568 respond_to_request(mdr
, -EINVAL
);
4572 file_layout_t layout
;
4573 if (cur
->get_projected_inode()->has_layout())
4574 layout
= cur
->get_projected_inode()->layout
;
4575 else if (dir_layout
)
4576 layout
= *dir_layout
;
4578 layout
= mdcache
->default_file_layout
;
4580 rest
= name
.substr(name
.find("layout"));
4581 if (check_layout_vxattr(mdr
, rest
, value
, &layout
) < 0)
4584 xlocks
.insert(&cur
->policylock
);
4585 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4588 pi
= cur
->project_inode();
4589 pi
->layout
= layout
;
4590 } else if (name
.compare(0, 16, "ceph.file.layout") == 0) {
4591 if (!cur
->is_file()) {
4592 respond_to_request(mdr
, -EINVAL
);
4595 if (cur
->get_projected_inode()->size
||
4596 cur
->get_projected_inode()->truncate_seq
> 1) {
4597 respond_to_request(mdr
, -ENOTEMPTY
);
4600 file_layout_t layout
= cur
->get_projected_inode()->layout
;
4601 rest
= name
.substr(name
.find("layout"));
4602 if (check_layout_vxattr(mdr
, rest
, value
, &layout
) < 0)
4605 xlocks
.insert(&cur
->filelock
);
4606 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4609 pi
= cur
->project_inode();
4610 int64_t old_pool
= pi
->layout
.pool_id
;
4611 pi
->add_old_pool(old_pool
);
4612 pi
->layout
= layout
;
4613 pi
->ctime
= mdr
->get_op_stamp();
4614 } else if (name
.compare(0, 10, "ceph.quota") == 0) {
4615 if (!cur
->is_dir() || cur
->is_root()) {
4616 respond_to_request(mdr
, -EINVAL
);
4620 quota_info_t quota
= cur
->get_projected_inode()->quota
;
4622 rest
= name
.substr(name
.find("quota"));
4623 int r
= parse_quota_vxattr(rest
, value
, "a
);
4625 respond_to_request(mdr
, r
);
4629 xlocks
.insert(&cur
->policylock
);
4630 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4633 pi
= cur
->project_inode();
4635 } else if (name
.find("ceph.dir.pin") == 0) {
4636 if (!cur
->is_dir() || cur
->is_root()) {
4637 respond_to_request(mdr
, -EINVAL
);
4643 rank
= boost::lexical_cast
<mds_rank_t
>(value
);
4644 if (rank
< 0) rank
= MDS_RANK_NONE
;
4645 } catch (boost::bad_lexical_cast
const&) {
4646 dout(10) << "bad vxattr value, unable to parse int for " << name
<< dendl
;
4647 respond_to_request(mdr
, -EINVAL
);
4651 xlocks
.insert(&cur
->policylock
);
4652 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4655 pi
= cur
->project_inode();
4656 cur
->set_export_pin(rank
);
4658 dout(10) << " unknown vxattr " << name
<< dendl
;
4659 respond_to_request(mdr
, -EINVAL
);
4664 pi
->ctime
= mdr
->get_op_stamp();
4665 pi
->version
= cur
->pre_dirty();
4667 pi
->update_backtrace();
4670 mdr
->ls
= mdlog
->get_current_segment();
4671 EUpdate
*le
= new EUpdate(mdlog
, "set vxattr layout");
4672 mdlog
->start_entry(le
);
4673 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4674 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4675 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4677 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4681 void Server::handle_remove_vxattr(MDRequestRef
& mdr
, CInode
*cur
,
4682 file_layout_t
*dir_layout
,
4683 set
<SimpleLock
*> rdlocks
,
4684 set
<SimpleLock
*> wrlocks
,
4685 set
<SimpleLock
*> xlocks
)
4687 MClientRequest
*req
= mdr
->client_request
;
4688 string
name(req
->get_path2());
4690 dout(10) << __func__
<< " " << name
<< " on " << *cur
<< dendl
;
4692 if (name
== "ceph.dir.layout") {
4693 if (!cur
->is_dir()) {
4694 respond_to_request(mdr
, -ENODATA
);
4697 if (cur
->is_root()) {
4698 dout(10) << "can't remove layout policy on the root directory" << dendl
;
4699 respond_to_request(mdr
, -EINVAL
);
4703 if (!cur
->get_projected_inode()->has_layout()) {
4704 respond_to_request(mdr
, -ENODATA
);
4708 xlocks
.insert(&cur
->policylock
);
4709 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4712 inode_t
*pi
= cur
->project_inode();
4714 pi
->version
= cur
->pre_dirty();
4717 mdr
->ls
= mdlog
->get_current_segment();
4718 EUpdate
*le
= new EUpdate(mdlog
, "remove dir layout vxattr");
4719 mdlog
->start_entry(le
);
4720 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4721 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4722 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4724 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4726 } else if (name
== "ceph.dir.layout.pool_namespace"
4727 || name
== "ceph.file.layout.pool_namespace") {
4728 // Namespace is the only layout field that has a meaningful
4729 // null/none value (empty string, means default layout). Is equivalent
4730 // to a setxattr with empty string: pass through the empty payload of
4731 // the rmxattr request to do this.
4732 handle_set_vxattr(mdr
, cur
, dir_layout
, rdlocks
, wrlocks
, xlocks
);
4736 respond_to_request(mdr
, -ENODATA
);
4739 class C_MDS_inode_xattr_update_finish
: public ServerLogContext
{
4743 C_MDS_inode_xattr_update_finish(Server
*s
, MDRequestRef
& r
, CInode
*i
) :
4744 ServerLogContext(s
, r
), in(i
) { }
4745 void finish(int r
) override
{
4749 in
->pop_and_dirty_projected_inode(mdr
->ls
);
4753 get_mds()->balancer
->hit_inode(mdr
->get_mds_stamp(), in
, META_POP_IWR
);
4755 server
->respond_to_request(mdr
, 0);
4759 void Server::handle_client_setxattr(MDRequestRef
& mdr
)
4761 MClientRequest
*req
= mdr
->client_request
;
4762 string
name(req
->get_path2());
4763 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4766 file_layout_t
*dir_layout
= NULL
;
4767 if (name
.compare(0, 15, "ceph.dir.layout") == 0)
4768 cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true, false, &dir_layout
);
4770 cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
4774 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4775 respond_to_request(mdr
, -EROFS
);
4779 int flags
= req
->head
.args
.setxattr
.flags
;
4781 // magic ceph.* namespace?
4782 if (name
.compare(0, 5, "ceph.") == 0) {
4783 handle_set_vxattr(mdr
, cur
, dir_layout
, rdlocks
, wrlocks
, xlocks
);
4787 xlocks
.insert(&cur
->xattrlock
);
4788 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4791 if (!check_access(mdr
, cur
, MAY_WRITE
))
4794 map
<string
, bufferptr
> *pxattrs
= cur
->get_projected_xattrs();
4795 size_t len
= req
->get_data().length();
4796 size_t inc
= len
+ name
.length();
4798 // check xattrs kv pairs size
4799 size_t cur_xattrs_size
= 0;
4800 for (const auto& p
: *pxattrs
) {
4801 if ((flags
& CEPH_XATTR_REPLACE
) && (name
.compare(p
.first
) == 0)) {
4804 cur_xattrs_size
+= p
.first
.length() + p
.second
.length();
4807 if (((cur_xattrs_size
+ inc
) > g_conf
->mds_max_xattr_pairs_size
)) {
4808 dout(10) << "xattr kv pairs size too big. cur_xattrs_size "
4809 << cur_xattrs_size
<< ", inc " << inc
<< dendl
;
4810 respond_to_request(mdr
, -ENOSPC
);
4814 if ((flags
& CEPH_XATTR_CREATE
) && pxattrs
->count(name
)) {
4815 dout(10) << "setxattr '" << name
<< "' XATTR_CREATE and EEXIST on " << *cur
<< dendl
;
4816 respond_to_request(mdr
, -EEXIST
);
4819 if ((flags
& CEPH_XATTR_REPLACE
) && !pxattrs
->count(name
)) {
4820 dout(10) << "setxattr '" << name
<< "' XATTR_REPLACE and ENODATA on " << *cur
<< dendl
;
4821 respond_to_request(mdr
, -ENODATA
);
4825 dout(10) << "setxattr '" << name
<< "' len " << len
<< " on " << *cur
<< dendl
;
4828 map
<string
,bufferptr
> *px
= new map
<string
,bufferptr
>;
4829 inode_t
*pi
= cur
->project_inode(px
);
4830 pi
->version
= cur
->pre_dirty();
4831 pi
->ctime
= mdr
->get_op_stamp();
4833 pi
->xattr_version
++;
4835 if (!(flags
& CEPH_XATTR_REMOVE
)) {
4836 (*px
)[name
] = buffer::create(len
);
4838 req
->get_data().copy(0, len
, (*px
)[name
].c_str());
4842 mdr
->ls
= mdlog
->get_current_segment();
4843 EUpdate
*le
= new EUpdate(mdlog
, "setxattr");
4844 mdlog
->start_entry(le
);
4845 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4846 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4847 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4849 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4852 void Server::handle_client_removexattr(MDRequestRef
& mdr
)
4854 MClientRequest
*req
= mdr
->client_request
;
4855 string
name(req
->get_path2());
4856 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4857 file_layout_t
*dir_layout
= NULL
;
4859 if (name
== "ceph.dir.layout")
4860 cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true, false, &dir_layout
);
4862 cur
= rdlock_path_pin_ref(mdr
, 0, rdlocks
, true);
4866 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4867 respond_to_request(mdr
, -EROFS
);
4871 if (name
.compare(0, 5, "ceph.") == 0) {
4872 handle_remove_vxattr(mdr
, cur
, dir_layout
, rdlocks
, wrlocks
, xlocks
);
4876 xlocks
.insert(&cur
->xattrlock
);
4877 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4880 map
<string
, bufferptr
> *pxattrs
= cur
->get_projected_xattrs();
4881 if (pxattrs
->count(name
) == 0) {
4882 dout(10) << "removexattr '" << name
<< "' and ENODATA on " << *cur
<< dendl
;
4883 respond_to_request(mdr
, -ENODATA
);
4887 dout(10) << "removexattr '" << name
<< "' on " << *cur
<< dendl
;
4890 map
<string
,bufferptr
> *px
= new map
<string
,bufferptr
>;
4891 inode_t
*pi
= cur
->project_inode(px
);
4892 pi
->version
= cur
->pre_dirty();
4893 pi
->ctime
= mdr
->get_op_stamp();
4895 pi
->xattr_version
++;
4899 mdr
->ls
= mdlog
->get_current_segment();
4900 EUpdate
*le
= new EUpdate(mdlog
, "removexattr");
4901 mdlog
->start_entry(le
);
4902 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
4903 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, cur
, 0, PREDIRTY_PRIMARY
);
4904 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, cur
);
4906 journal_and_reply(mdr
, cur
, 0, le
, new C_MDS_inode_update_finish(this, mdr
, cur
));
4910 // =================================================================
4911 // DIRECTORY and NAMESPACE OPS
4914 // ------------------------------------------------
4918 class C_MDS_mknod_finish
: public ServerLogContext
{
4922 C_MDS_mknod_finish(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CInode
*ni
) :
4923 ServerLogContext(s
, r
), dn(d
), newi(ni
) {}
4924 void finish(int r
) override
{
4928 dn
->pop_projected_linkage();
4930 // be a bit hacky with the inode version, here.. we decrement it
4931 // just to keep mark_dirty() happen. (we didn't bother projecting
4932 // a new version of hte inode since it's just been created)
4933 newi
->inode
.version
--;
4934 newi
->mark_dirty(newi
->inode
.version
+ 1, mdr
->ls
);
4935 newi
->_mark_dirty_parent(mdr
->ls
, true);
4938 if (newi
->inode
.is_dir()) {
4939 CDir
*dir
= newi
->get_dirfrag(frag_t());
4941 dir
->fnode
.version
--;
4942 dir
->mark_dirty(dir
->fnode
.version
+ 1, mdr
->ls
);
4943 dir
->mark_new(mdr
->ls
);
4948 MDRequestRef null_ref
;
4949 get_mds()->mdcache
->send_dentry_link(dn
, null_ref
);
4951 if (newi
->inode
.is_file())
4952 get_mds()->locker
->share_inode_max_size(newi
);
4955 get_mds()->balancer
->hit_inode(mdr
->get_mds_stamp(), newi
, META_POP_IWR
);
4958 server
->respond_to_request(mdr
, 0);
4963 void Server::handle_client_mknod(MDRequestRef
& mdr
)
4965 MClientRequest
*req
= mdr
->client_request
;
4966 client_t client
= mdr
->get_client();
4967 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
4968 file_layout_t
*dir_layout
= NULL
;
4969 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, false, false, false,
4972 if (mdr
->snapid
!= CEPH_NOSNAP
) {
4973 respond_to_request(mdr
, -EROFS
);
4976 CInode
*diri
= dn
->get_dir()->get_inode();
4977 rdlocks
.insert(&diri
->authlock
);
4978 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
4981 if (!check_access(mdr
, diri
, MAY_WRITE
))
4984 if (!check_fragment_space(mdr
, dn
->get_dir()))
4987 unsigned mode
= req
->head
.args
.mknod
.mode
;
4988 if ((mode
& S_IFMT
) == 0)
4992 file_layout_t layout
;
4993 if (dir_layout
&& S_ISREG(mode
))
4994 layout
= *dir_layout
;
4996 layout
= mdcache
->default_file_layout
;
4998 SnapRealm
*realm
= dn
->get_dir()->inode
->find_snaprealm();
4999 snapid_t follows
= realm
->get_newest_seq();
5000 CInode
*newi
= prepare_new_inode(mdr
, dn
->get_dir(), inodeno_t(req
->head
.ino
),
5004 dn
->push_projected_linkage(newi
);
5006 newi
->inode
.rdev
= req
->head
.args
.mknod
.rdev
;
5007 newi
->inode
.version
= dn
->pre_dirty();
5008 newi
->inode
.rstat
.rfiles
= 1;
5009 if (layout
.pool_id
!= mdcache
->default_file_layout
.pool_id
)
5010 newi
->inode
.add_old_pool(mdcache
->default_file_layout
.pool_id
);
5011 newi
->inode
.update_backtrace();
5013 // if the client created a _regular_ file via MKNOD, it's highly likely they'll
5014 // want to write to it (e.g., if they are reexporting NFS)
5015 if (S_ISREG(newi
->inode
.mode
)) {
5016 dout(15) << " setting a client_range too, since this is a regular file" << dendl
;
5017 newi
->inode
.client_ranges
[client
].range
.first
= 0;
5018 newi
->inode
.client_ranges
[client
].range
.last
= newi
->inode
.get_layout_size_increment();
5019 newi
->inode
.client_ranges
[client
].follows
= follows
;
5021 // issue a cap on the file
5022 int cmode
= CEPH_FILE_MODE_RDWR
;
5023 Capability
*cap
= mds
->locker
->issue_new_caps(newi
, cmode
, mdr
->session
, realm
, req
->is_replay());
5027 // put locks in excl mode
5028 newi
->filelock
.set_state(LOCK_EXCL
);
5029 newi
->authlock
.set_state(LOCK_EXCL
);
5030 newi
->xattrlock
.set_state(LOCK_EXCL
);
5034 assert(dn
->first
== follows
+ 1);
5035 newi
->first
= dn
->first
;
5037 dout(10) << "mknod mode " << newi
->inode
.mode
<< " rdev " << newi
->inode
.rdev
<< dendl
;
5040 mdr
->ls
= mdlog
->get_current_segment();
5041 EUpdate
*le
= new EUpdate(mdlog
, "mknod");
5042 mdlog
->start_entry(le
);
5043 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
5044 journal_allocated_inos(mdr
, &le
->metablob
);
5046 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, newi
, dn
->get_dir(),
5047 PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
5048 le
->metablob
.add_primary_dentry(dn
, newi
, true, true, true);
5050 journal_and_reply(mdr
, newi
, dn
, le
, new C_MDS_mknod_finish(this, mdr
, dn
, newi
));
5056 /* This function takes responsibility for the passed mdr*/
5057 void Server::handle_client_mkdir(MDRequestRef
& mdr
)
5059 MClientRequest
*req
= mdr
->client_request
;
5060 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
5061 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, false, false, false);
5063 if (mdr
->snapid
!= CEPH_NOSNAP
) {
5064 respond_to_request(mdr
, -EROFS
);
5067 CDir
*dir
= dn
->get_dir();
5068 CInode
*diri
= dir
->get_inode();
5069 rdlocks
.insert(&diri
->authlock
);
5070 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
5073 // mkdir check access
5074 if (!check_access(mdr
, diri
, MAY_WRITE
))
5077 if (!check_fragment_space(mdr
, dir
))
5081 SnapRealm
*realm
= dn
->get_dir()->inode
->find_snaprealm();
5082 snapid_t follows
= realm
->get_newest_seq();
5084 unsigned mode
= req
->head
.args
.mkdir
.mode
;
5087 CInode
*newi
= prepare_new_inode(mdr
, dn
->get_dir(), inodeno_t(req
->head
.ino
), mode
);
5090 // it's a directory.
5091 dn
->push_projected_linkage(newi
);
5093 newi
->inode
.version
= dn
->pre_dirty();
5094 newi
->inode
.rstat
.rsubdirs
= 1;
5095 newi
->inode
.update_backtrace();
5097 dout(12) << " follows " << follows
<< dendl
;
5098 assert(dn
->first
== follows
+ 1);
5099 newi
->first
= dn
->first
;
5101 // ...and that new dir is empty.
5102 CDir
*newdir
= newi
->get_or_open_dirfrag(mdcache
, frag_t());
5103 newdir
->state_set(CDir::STATE_CREATING
);
5104 newdir
->mark_complete();
5105 newdir
->fnode
.version
= newdir
->pre_dirty();
5108 mdr
->ls
= mdlog
->get_current_segment();
5109 EUpdate
*le
= new EUpdate(mdlog
, "mkdir");
5110 mdlog
->start_entry(le
);
5111 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
5112 journal_allocated_inos(mdr
, &le
->metablob
);
5113 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, newi
, dn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
5114 le
->metablob
.add_primary_dentry(dn
, newi
, true, true);
5115 le
->metablob
.add_new_dir(newdir
); // dirty AND complete AND new
5117 // issue a cap on the directory
5118 int cmode
= CEPH_FILE_MODE_RDWR
;
5119 Capability
*cap
= mds
->locker
->issue_new_caps(newi
, cmode
, mdr
->session
, realm
, req
->is_replay());
5123 // put locks in excl mode
5124 newi
->filelock
.set_state(LOCK_EXCL
);
5125 newi
->authlock
.set_state(LOCK_EXCL
);
5126 newi
->xattrlock
.set_state(LOCK_EXCL
);
5129 // make sure this inode gets into the journal
5130 le
->metablob
.add_opened_ino(newi
->ino());
5131 LogSegment
*ls
= mds
->mdlog
->get_current_segment();
5132 ls
->open_files
.push_back(&newi
->item_open_file
);
5134 journal_and_reply(mdr
, newi
, dn
, le
, new C_MDS_mknod_finish(this, mdr
, dn
, newi
));
5140 void Server::handle_client_symlink(MDRequestRef
& mdr
)
5142 MClientRequest
*req
= mdr
->client_request
;
5143 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
5144 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, false, false, false);
5146 if (mdr
->snapid
!= CEPH_NOSNAP
) {
5147 respond_to_request(mdr
, -EROFS
);
5150 CDir
*dir
= dn
->get_dir();
5151 CInode
*diri
= dir
->get_inode();
5152 rdlocks
.insert(&diri
->authlock
);
5153 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
5156 if (!check_access(mdr
, diri
, MAY_WRITE
))
5159 if (!check_fragment_space(mdr
, dir
))
5162 unsigned mode
= S_IFLNK
| 0777;
5163 CInode
*newi
= prepare_new_inode(mdr
, dn
->get_dir(), inodeno_t(req
->head
.ino
), mode
);
5167 dn
->push_projected_linkage(newi
);
5169 newi
->symlink
= req
->get_path2();
5170 newi
->inode
.size
= newi
->symlink
.length();
5171 newi
->inode
.rstat
.rbytes
= newi
->inode
.size
;
5172 newi
->inode
.rstat
.rfiles
= 1;
5173 newi
->inode
.version
= dn
->pre_dirty();
5174 newi
->inode
.update_backtrace();
5176 newi
->first
= dn
->first
;
5179 mdr
->ls
= mdlog
->get_current_segment();
5180 EUpdate
*le
= new EUpdate(mdlog
, "symlink");
5181 mdlog
->start_entry(le
);
5182 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
5183 journal_allocated_inos(mdr
, &le
->metablob
);
5184 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, newi
, dn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
5185 le
->metablob
.add_primary_dentry(dn
, newi
, true, true);
5187 journal_and_reply(mdr
, newi
, dn
, le
, new C_MDS_mknod_finish(this, mdr
, dn
, newi
));
5196 void Server::handle_client_link(MDRequestRef
& mdr
)
5198 MClientRequest
*req
= mdr
->client_request
;
5200 dout(7) << "handle_client_link " << req
->get_filepath()
5201 << " to " << req
->get_filepath2()
5204 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
5206 CDentry
*dn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, false, false, false);
5208 CInode
*targeti
= rdlock_path_pin_ref(mdr
, 1, rdlocks
, false);
5209 if (!targeti
) return;
5210 if (mdr
->snapid
!= CEPH_NOSNAP
) {
5211 respond_to_request(mdr
, -EROFS
);
5215 CDir
*dir
= dn
->get_dir();
5216 dout(7) << "handle_client_link link " << dn
->get_name() << " in " << *dir
<< dendl
;
5217 dout(7) << "target is " << *targeti
<< dendl
;
5218 if (targeti
->is_dir()) {
5219 // if srcdn is replica, need to make sure its linkage is correct
5220 vector
<CDentry
*>& trace
= mdr
->dn
[1];
5221 if (trace
.empty() ||
5222 trace
.back()->is_auth() ||
5223 trace
.back()->lock
.can_read(mdr
->get_client())) {
5224 dout(7) << "target is a dir, failing..." << dendl
;
5225 respond_to_request(mdr
, -EINVAL
);
5230 xlocks
.insert(&targeti
->linklock
);
5232 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
5235 if ((!mdr
->has_more() || mdr
->more()->witnessed
.empty())) {
5236 if (!check_access(mdr
, targeti
, MAY_WRITE
))
5239 if (!check_access(mdr
, dir
->get_inode(), MAY_WRITE
))
5242 if (!check_fragment_space(mdr
, dir
))
5247 assert(g_conf
->mds_kill_link_at
!= 1);
5250 if (targeti
->is_auth())
5251 _link_local(mdr
, dn
, targeti
);
5253 _link_remote(mdr
, true, dn
, targeti
);
5257 class C_MDS_link_local_finish
: public ServerLogContext
{
5263 C_MDS_link_local_finish(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CInode
*ti
,
5264 version_t dnpv_
, version_t tipv_
) :
5265 ServerLogContext(s
, r
), dn(d
), targeti(ti
),
5266 dnpv(dnpv_
), tipv(tipv_
) { }
5267 void finish(int r
) override
{
5269 server
->_link_local_finish(mdr
, dn
, targeti
, dnpv
, tipv
);
5274 void Server::_link_local(MDRequestRef
& mdr
, CDentry
*dn
, CInode
*targeti
)
5276 dout(10) << "_link_local " << *dn
<< " to " << *targeti
<< dendl
;
5278 mdr
->ls
= mdlog
->get_current_segment();
5280 // predirty NEW dentry
5281 version_t dnpv
= dn
->pre_dirty();
5282 version_t tipv
= targeti
->pre_dirty();
5284 // project inode update
5285 inode_t
*pi
= targeti
->project_inode();
5287 pi
->ctime
= mdr
->get_op_stamp();
5292 EUpdate
*le
= new EUpdate(mdlog
, "link_local");
5293 mdlog
->start_entry(le
);
5294 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
5295 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, targeti
, dn
->get_dir(), PREDIRTY_DIR
, 1); // new dn
5296 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, targeti
, 0, PREDIRTY_PRIMARY
); // targeti
5297 le
->metablob
.add_remote_dentry(dn
, true, targeti
->ino(), targeti
->d_type()); // new remote
5298 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, targeti
);
5300 // do this after predirty_*, to avoid funky extra dnl arg
5301 dn
->push_projected_linkage(targeti
->ino(), targeti
->d_type());
5303 journal_and_reply(mdr
, targeti
, dn
, le
, new C_MDS_link_local_finish(this, mdr
, dn
, targeti
, dnpv
, tipv
));
5306 void Server::_link_local_finish(MDRequestRef
& mdr
, CDentry
*dn
, CInode
*targeti
,
5307 version_t dnpv
, version_t tipv
)
5309 dout(10) << "_link_local_finish " << *dn
<< " to " << *targeti
<< dendl
;
5311 // link and unlock the NEW dentry
5312 CDentry::linkage_t
*dnl
= dn
->pop_projected_linkage();
5313 if (!dnl
->get_inode())
5314 dn
->link_remote(dnl
, targeti
);
5315 dn
->mark_dirty(dnpv
, mdr
->ls
);
5318 targeti
->pop_and_dirty_projected_inode(mdr
->ls
);
5322 MDRequestRef null_ref
;
5323 mdcache
->send_dentry_link(dn
, null_ref
);
5325 // bump target popularity
5326 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), targeti
, META_POP_IWR
);
5327 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), dn
->get_dir(), META_POP_IWR
);
5330 respond_to_request(mdr
, 0);
5334 // link / unlink remote
5336 class C_MDS_link_remote_finish
: public ServerLogContext
{
5342 C_MDS_link_remote_finish(Server
*s
, MDRequestRef
& r
, bool i
, CDentry
*d
, CInode
*ti
) :
5343 ServerLogContext(s
, r
), inc(i
), dn(d
), targeti(ti
),
5344 dpv(d
->get_projected_version()) {}
5345 void finish(int r
) override
{
5347 server
->_link_remote_finish(mdr
, inc
, dn
, targeti
, dpv
);
5351 void Server::_link_remote(MDRequestRef
& mdr
, bool inc
, CDentry
*dn
, CInode
*targeti
)
5353 dout(10) << "_link_remote "
5354 << (inc
? "link ":"unlink ")
5355 << *dn
<< " to " << *targeti
<< dendl
;
5357 // 1. send LinkPrepare to dest (journal nlink++ prepare)
5358 mds_rank_t linkauth
= targeti
->authority().first
;
5359 if (mdr
->more()->witnessed
.count(linkauth
) == 0) {
5360 if (mds
->is_cluster_degraded() &&
5361 !mds
->mdsmap
->is_clientreplay_or_active_or_stopping(linkauth
)) {
5362 dout(10) << " targeti auth mds." << linkauth
<< " is not active" << dendl
;
5363 if (mdr
->more()->waiting_on_slave
.empty())
5364 mds
->wait_for_active_peer(linkauth
, new C_MDS_RetryRequest(mdcache
, mdr
));
5368 dout(10) << " targeti auth must prepare nlink++/--" << dendl
;
5371 op
= MMDSSlaveRequest::OP_LINKPREP
;
5373 op
= MMDSSlaveRequest::OP_UNLINKPREP
;
5374 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, op
);
5375 targeti
->set_object_info(req
->get_object_info());
5376 req
->op_stamp
= mdr
->get_op_stamp();
5377 mds
->send_message_mds(req
, linkauth
);
5379 assert(mdr
->more()->waiting_on_slave
.count(linkauth
) == 0);
5380 mdr
->more()->waiting_on_slave
.insert(linkauth
);
5383 dout(10) << " targeti auth has prepared nlink++/--" << dendl
;
5385 assert(g_conf
->mds_kill_link_at
!= 2);
5387 mdr
->set_mds_stamp(ceph_clock_now());
5390 mdr
->ls
= mdlog
->get_current_segment();
5391 EUpdate
*le
= new EUpdate(mdlog
, inc
? "link_remote":"unlink_remote");
5392 mdlog
->start_entry(le
);
5393 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
5394 if (!mdr
->more()->witnessed
.empty()) {
5395 dout(20) << " noting uncommitted_slaves " << mdr
->more()->witnessed
<< dendl
;
5396 le
->reqid
= mdr
->reqid
;
5397 le
->had_slaves
= true;
5398 mdcache
->add_uncommitted_master(mdr
->reqid
, mdr
->ls
, mdr
->more()->witnessed
);
5403 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, targeti
, dn
->get_dir(), PREDIRTY_DIR
, 1);
5404 le
->metablob
.add_remote_dentry(dn
, true, targeti
->ino(), targeti
->d_type()); // new remote
5405 dn
->push_projected_linkage(targeti
->ino(), targeti
->d_type());
5408 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, targeti
, dn
->get_dir(), PREDIRTY_DIR
, -1);
5409 mdcache
->journal_cow_dentry(mdr
.get(), &le
->metablob
, dn
);
5410 le
->metablob
.add_null_dentry(dn
, true);
5411 dn
->push_projected_linkage();
5414 journal_and_reply(mdr
, targeti
, dn
, le
, new C_MDS_link_remote_finish(this, mdr
, inc
, dn
, targeti
));
5417 void Server::_link_remote_finish(MDRequestRef
& mdr
, bool inc
,
5418 CDentry
*dn
, CInode
*targeti
,
5421 dout(10) << "_link_remote_finish "
5422 << (inc
? "link ":"unlink ")
5423 << *dn
<< " to " << *targeti
<< dendl
;
5425 assert(g_conf
->mds_kill_link_at
!= 3);
5427 if (!mdr
->more()->witnessed
.empty())
5428 mdcache
->logged_master_update(mdr
->reqid
);
5431 // link the new dentry
5432 CDentry::linkage_t
*dnl
= dn
->pop_projected_linkage();
5433 if (!dnl
->get_inode())
5434 dn
->link_remote(dnl
, targeti
);
5435 dn
->mark_dirty(dpv
, mdr
->ls
);
5437 // unlink main dentry
5438 dn
->get_dir()->unlink_inode(dn
);
5439 dn
->pop_projected_linkage();
5440 dn
->mark_dirty(dn
->get_projected_version(), mdr
->ls
); // dirty old dentry
5445 MDRequestRef null_ref
;
5447 mdcache
->send_dentry_link(dn
, null_ref
);
5449 mdcache
->send_dentry_unlink(dn
, NULL
, null_ref
);
5451 // bump target popularity
5452 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), targeti
, META_POP_IWR
);
5453 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), dn
->get_dir(), META_POP_IWR
);
5456 respond_to_request(mdr
, 0);
5459 // removing a new dn?
5460 dn
->get_dir()->try_remove_unlinked_dn(dn
);
5464 // remote linking/unlinking
5466 class C_MDS_SlaveLinkPrep
: public ServerLogContext
{
5469 C_MDS_SlaveLinkPrep(Server
*s
, MDRequestRef
& r
, CInode
*t
) :
5470 ServerLogContext(s
, r
), targeti(t
) { }
5471 void finish(int r
) override
{
5473 server
->_logged_slave_link(mdr
, targeti
);
5477 class C_MDS_SlaveLinkCommit
: public ServerContext
{
5481 C_MDS_SlaveLinkCommit(Server
*s
, MDRequestRef
& r
, CInode
*t
) :
5482 ServerContext(s
), mdr(r
), targeti(t
) { }
5483 void finish(int r
) override
{
5484 server
->_commit_slave_link(mdr
, r
, targeti
);
5488 /* This function DOES put the mdr->slave_request before returning*/
5489 void Server::handle_slave_link_prep(MDRequestRef
& mdr
)
5491 dout(10) << "handle_slave_link_prep " << *mdr
5492 << " on " << mdr
->slave_request
->get_object_info()
5495 assert(g_conf
->mds_kill_link_at
!= 4);
5497 CInode
*targeti
= mdcache
->get_inode(mdr
->slave_request
->get_object_info().ino
);
5499 dout(10) << "targeti " << *targeti
<< dendl
;
5500 CDentry
*dn
= targeti
->get_parent_dn();
5501 CDentry::linkage_t
*dnl
= dn
->get_linkage();
5502 assert(dnl
->is_primary());
5504 mdr
->set_op_stamp(mdr
->slave_request
->op_stamp
);
5506 mdr
->auth_pin(targeti
);
5508 //ceph_abort(); // test hack: make sure master can handle a slave that fails to prepare...
5509 assert(g_conf
->mds_kill_link_at
!= 5);
5512 mdr
->ls
= mdlog
->get_current_segment();
5513 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_link_prep", mdr
->reqid
, mdr
->slave_to_mds
,
5514 ESlaveUpdate::OP_PREPARE
, ESlaveUpdate::LINK
);
5515 mdlog
->start_entry(le
);
5517 inode_t
*pi
= dnl
->get_inode()->project_inode();
5519 // update journaled target inode
5521 if (mdr
->slave_request
->get_op() == MMDSSlaveRequest::OP_LINKPREP
) {
5529 link_rollback rollback
;
5530 rollback
.reqid
= mdr
->reqid
;
5531 rollback
.ino
= targeti
->ino();
5532 rollback
.old_ctime
= targeti
->inode
.ctime
; // we hold versionlock xlock; no concorrent projections
5533 const fnode_t
*pf
= targeti
->get_parent_dn()->get_dir()->get_projected_fnode();
5534 rollback
.old_dir_mtime
= pf
->fragstat
.mtime
;
5535 rollback
.old_dir_rctime
= pf
->rstat
.rctime
;
5536 rollback
.was_inc
= inc
;
5537 ::encode(rollback
, le
->rollback
);
5538 mdr
->more()->rollback_bl
= le
->rollback
;
5540 pi
->ctime
= mdr
->get_op_stamp();
5541 pi
->version
= targeti
->pre_dirty();
5543 dout(10) << " projected inode " << pi
<< " v " << pi
->version
<< dendl
;
5546 mdcache
->predirty_journal_parents(mdr
, &le
->commit
, dnl
->get_inode(), 0, PREDIRTY_SHALLOW
|PREDIRTY_PRIMARY
);
5547 mdcache
->journal_dirty_inode(mdr
.get(), &le
->commit
, targeti
);
5549 // set up commit waiter
5550 mdr
->more()->slave_commit
= new C_MDS_SlaveLinkCommit(this, mdr
, targeti
);
5552 mdr
->more()->slave_update_journaled
= true;
5553 submit_mdlog_entry(le
, new C_MDS_SlaveLinkPrep(this, mdr
, targeti
),
5558 void Server::_logged_slave_link(MDRequestRef
& mdr
, CInode
*targeti
)
5560 dout(10) << "_logged_slave_link " << *mdr
5561 << " " << *targeti
<< dendl
;
5563 assert(g_conf
->mds_kill_link_at
!= 6);
5565 // update the target
5566 targeti
->pop_and_dirty_projected_inode(mdr
->ls
);
5570 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), targeti
, META_POP_IWR
);
5573 mdr
->slave_request
->put();
5574 mdr
->slave_request
= 0;
5577 if (!mdr
->aborted
) {
5578 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
5579 MMDSSlaveRequest::OP_LINKPREPACK
);
5580 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
5582 dout(10) << " abort flag set, finishing" << dendl
;
5583 mdcache
->request_finish(mdr
);
5588 struct C_MDS_CommittedSlave
: public ServerLogContext
{
5589 C_MDS_CommittedSlave(Server
*s
, MDRequestRef
& m
) : ServerLogContext(s
, m
) {}
5590 void finish(int r
) override
{
5591 server
->_committed_slave(mdr
);
5595 void Server::_commit_slave_link(MDRequestRef
& mdr
, int r
, CInode
*targeti
)
5597 dout(10) << "_commit_slave_link " << *mdr
5599 << " " << *targeti
<< dendl
;
5601 assert(g_conf
->mds_kill_link_at
!= 7);
5604 // drop our pins, etc.
5607 // write a commit to the journal
5608 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_link_commit", mdr
->reqid
, mdr
->slave_to_mds
,
5609 ESlaveUpdate::OP_COMMIT
, ESlaveUpdate::LINK
);
5610 mdlog
->start_entry(le
);
5611 submit_mdlog_entry(le
, new C_MDS_CommittedSlave(this, mdr
), mdr
, __func__
);
5614 do_link_rollback(mdr
->more()->rollback_bl
, mdr
->slave_to_mds
, mdr
);
5618 void Server::_committed_slave(MDRequestRef
& mdr
)
5620 dout(10) << "_committed_slave " << *mdr
<< dendl
;
5622 assert(g_conf
->mds_kill_link_at
!= 8);
5624 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
5625 MMDSSlaveRequest::OP_COMMITTED
);
5626 mds
->send_message_mds(req
, mdr
->slave_to_mds
);
5627 mdcache
->request_finish(mdr
);
5630 struct C_MDS_LoggedLinkRollback
: public ServerLogContext
{
5632 C_MDS_LoggedLinkRollback(Server
*s
, MutationRef
& m
, MDRequestRef
& r
) : ServerLogContext(s
, r
), mut(m
) {}
5633 void finish(int r
) override
{
5634 server
->_link_rollback_finish(mut
, mdr
);
5638 void Server::do_link_rollback(bufferlist
&rbl
, mds_rank_t master
, MDRequestRef
& mdr
)
5640 link_rollback rollback
;
5641 bufferlist::iterator p
= rbl
.begin();
5642 ::decode(rollback
, p
);
5644 dout(10) << "do_link_rollback on " << rollback
.reqid
5645 << (rollback
.was_inc
? " inc":" dec")
5646 << " ino " << rollback
.ino
5649 assert(g_conf
->mds_kill_link_at
!= 9);
5651 mdcache
->add_rollback(rollback
.reqid
, master
); // need to finish this update before resolve finishes
5652 assert(mdr
|| mds
->is_resolve());
5654 MutationRef
mut(new MutationImpl(nullptr, utime_t(), rollback
.reqid
));
5655 mut
->ls
= mds
->mdlog
->get_current_segment();
5657 CInode
*in
= mdcache
->get_inode(rollback
.ino
);
5659 dout(10) << " target is " << *in
<< dendl
;
5660 assert(!in
->is_projected()); // live slave request hold versionlock xlock.
5662 inode_t
*pi
= in
->project_inode();
5663 pi
->version
= in
->pre_dirty();
5664 mut
->add_projected_inode(in
);
5666 // parent dir rctime
5667 CDir
*parent
= in
->get_projected_parent_dn()->get_dir();
5668 fnode_t
*pf
= parent
->project_fnode();
5669 mut
->add_projected_fnode(parent
);
5670 pf
->version
= parent
->pre_dirty();
5671 if (pf
->fragstat
.mtime
== pi
->ctime
) {
5672 pf
->fragstat
.mtime
= rollback
.old_dir_mtime
;
5673 if (pf
->rstat
.rctime
== pi
->ctime
)
5674 pf
->rstat
.rctime
= rollback
.old_dir_rctime
;
5675 mut
->add_updated_lock(&parent
->get_inode()->filelock
);
5676 mut
->add_updated_lock(&parent
->get_inode()->nestlock
);
5680 pi
->ctime
= rollback
.old_ctime
;
5681 if (rollback
.was_inc
)
5687 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_link_rollback", rollback
.reqid
, master
,
5688 ESlaveUpdate::OP_ROLLBACK
, ESlaveUpdate::LINK
);
5689 mdlog
->start_entry(le
);
5690 le
->commit
.add_dir_context(parent
);
5691 le
->commit
.add_dir(parent
, true);
5692 le
->commit
.add_primary_dentry(in
->get_projected_parent_dn(), 0, true);
5694 submit_mdlog_entry(le
, new C_MDS_LoggedLinkRollback(this, mut
, mdr
),
5699 void Server::_link_rollback_finish(MutationRef
& mut
, MDRequestRef
& mdr
)
5701 dout(10) << "_link_rollback_finish" << dendl
;
5703 assert(g_conf
->mds_kill_link_at
!= 10);
5707 mdcache
->request_finish(mdr
);
5709 mdcache
->finish_rollback(mut
->reqid
);
5715 /* This function DOES NOT put the passed message before returning*/
5716 void Server::handle_slave_link_prep_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*m
)
5718 dout(10) << "handle_slave_link_prep_ack " << *mdr
5719 << " " << *m
<< dendl
;
5720 mds_rank_t from
= mds_rank_t(m
->get_source().num());
5722 assert(g_conf
->mds_kill_link_at
!= 11);
5725 mdr
->more()->slaves
.insert(from
);
5728 assert(mdr
->more()->witnessed
.count(from
) == 0);
5729 mdr
->more()->witnessed
.insert(from
);
5730 assert(!m
->is_not_journaled());
5731 mdr
->more()->has_journaled_slaves
= true;
5733 // remove from waiting list
5734 assert(mdr
->more()->waiting_on_slave
.count(from
));
5735 mdr
->more()->waiting_on_slave
.erase(from
);
5737 assert(mdr
->more()->waiting_on_slave
.empty());
5739 dispatch_client_request(mdr
); // go again!
5748 void Server::handle_client_unlink(MDRequestRef
& mdr
)
5750 MClientRequest
*req
= mdr
->client_request
;
5751 client_t client
= mdr
->get_client();
5755 if (req
->get_op() == CEPH_MDS_OP_RMDIR
) rmdir
= true;
5757 if (req
->get_filepath().depth() == 0) {
5758 respond_to_request(mdr
, -EINVAL
);
5763 vector
<CDentry
*> trace
;
5765 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, req
->get_filepath(), &trace
, &in
, MDS_TRAVERSE_FORWARD
);
5769 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
5770 mdcache
->find_ino_peers(req
->get_filepath().get_ino(), new C_MDS_TryFindInode(this, mdr
));
5773 respond_to_request(mdr
, r
);
5776 if (mdr
->snapid
!= CEPH_NOSNAP
) {
5777 respond_to_request(mdr
, -EROFS
);
5781 CDentry
*dn
= trace
[trace
.size()-1];
5783 if (!dn
->is_auth()) {
5784 mdcache
->request_forward(mdr
, dn
->authority().first
);
5788 CInode
*diri
= dn
->get_dir()->get_inode();
5790 CDentry::linkage_t
*dnl
= dn
->get_linkage(client
, mdr
);
5791 assert(!dnl
->is_null());
5794 dout(7) << "handle_client_rmdir on " << *dn
<< dendl
;
5796 dout(7) << "handle_client_unlink on " << *dn
<< dendl
;
5798 dout(7) << "dn links to " << *in
<< dendl
;
5803 // do empty directory checks
5804 if (_dir_is_nonempty_unlocked(mdr
, in
)) {
5805 respond_to_request(mdr
, -ENOTEMPTY
);
5809 dout(7) << "handle_client_unlink on dir " << *in
<< ", returning error" << dendl
;
5810 respond_to_request(mdr
, -EISDIR
);
5816 dout(7) << "handle_client_rmdir on non-dir " << *in
<< ", returning error" << dendl
;
5817 respond_to_request(mdr
, -ENOTDIR
);
5822 // -- create stray dentry? --
5823 CDentry
*straydn
= NULL
;
5824 if (dnl
->is_primary()) {
5825 straydn
= prepare_stray_dentry(mdr
, dnl
->get_inode());
5828 dout(10) << " straydn is " << *straydn
<< dendl
;
5829 } else if (mdr
->straydn
) {
5830 mdr
->unpin(mdr
->straydn
);
5831 mdr
->straydn
= NULL
;
5835 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
5837 for (int i
=0; i
<(int)trace
.size()-1; i
++)
5838 rdlocks
.insert(&trace
[i
]->lock
);
5839 xlocks
.insert(&dn
->lock
);
5840 wrlocks
.insert(&diri
->filelock
);
5841 wrlocks
.insert(&diri
->nestlock
);
5842 xlocks
.insert(&in
->linklock
);
5844 wrlocks
.insert(&straydn
->get_dir()->inode
->filelock
);
5845 wrlocks
.insert(&straydn
->get_dir()->inode
->nestlock
);
5846 xlocks
.insert(&straydn
->lock
);
5849 rdlocks
.insert(&in
->filelock
); // to verify it's empty
5850 mds
->locker
->include_snap_rdlocks(rdlocks
, dnl
->get_inode());
5852 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
5856 _dir_is_nonempty(mdr
, in
)) {
5857 respond_to_request(mdr
, -ENOTEMPTY
);
5861 if ((!mdr
->has_more() || mdr
->more()->witnessed
.empty())) {
5862 if (!check_access(mdr
, diri
, MAY_WRITE
))
5867 if (in
->is_dir() && in
->has_subtree_root_dirfrag()) {
5868 // subtree root auths need to be witnesses
5869 set
<mds_rank_t
> witnesses
;
5870 in
->list_replicas(witnesses
);
5871 dout(10) << " witnesses " << witnesses
<< ", have " << mdr
->more()->witnessed
<< dendl
;
5873 for (set
<mds_rank_t
>::iterator p
= witnesses
.begin();
5874 p
!= witnesses
.end();
5876 if (mdr
->more()->witnessed
.count(*p
)) {
5877 dout(10) << " already witnessed by mds." << *p
<< dendl
;
5878 } else if (mdr
->more()->waiting_on_slave
.count(*p
)) {
5879 dout(10) << " already waiting on witness mds." << *p
<< dendl
;
5881 if (!_rmdir_prepare_witness(mdr
, *p
, trace
, straydn
))
5885 if (!mdr
->more()->waiting_on_slave
.empty())
5886 return; // we're waiting for a witness.
5890 if (dnl
->is_remote() && !dnl
->get_inode()->is_auth())
5891 _link_remote(mdr
, false, dn
, dnl
->get_inode());
5893 _unlink_local(mdr
, dn
, straydn
);
5896 class C_MDS_unlink_local_finish
: public ServerLogContext
{
5899 version_t dnpv
; // deleted dentry
5901 C_MDS_unlink_local_finish(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CDentry
*sd
) :
5902 ServerLogContext(s
, r
), dn(d
), straydn(sd
),
5903 dnpv(d
->get_projected_version()) {}
5904 void finish(int r
) override
{
5906 server
->_unlink_local_finish(mdr
, dn
, straydn
, dnpv
);
5910 void Server::_unlink_local(MDRequestRef
& mdr
, CDentry
*dn
, CDentry
*straydn
)
5912 dout(10) << "_unlink_local " << *dn
<< dendl
;
5914 CDentry::linkage_t
*dnl
= dn
->get_projected_linkage();
5915 CInode
*in
= dnl
->get_inode();
5917 SnapRealm
*realm
= in
->find_snaprealm();
5918 snapid_t follows
= realm
->get_newest_seq();
5921 mdr
->ls
= mdlog
->get_current_segment();
5923 // prepare log entry
5924 EUpdate
*le
= new EUpdate(mdlog
, "unlink_local");
5925 mdlog
->start_entry(le
);
5926 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
5927 if (!mdr
->more()->witnessed
.empty()) {
5928 dout(20) << " noting uncommitted_slaves " << mdr
->more()->witnessed
<< dendl
;
5929 le
->reqid
= mdr
->reqid
;
5930 le
->had_slaves
= true;
5931 mdcache
->add_uncommitted_master(mdr
->reqid
, mdr
->ls
, mdr
->more()->witnessed
);
5935 assert(dnl
->is_primary());
5936 straydn
->push_projected_linkage(in
);
5937 straydn
->first
= follows
+ 1;
5940 // the unlinked dentry
5943 inode_t
*pi
= in
->project_inode();
5944 dn
->make_path_string(pi
->stray_prior_path
, true);
5945 mdr
->add_projected_inode(in
); // do this _after_ my dn->pre_dirty().. we apply that one manually.
5946 pi
->version
= in
->pre_dirty();
5947 pi
->ctime
= mdr
->get_op_stamp();
5951 in
->state_set(CInode::STATE_ORPHAN
);
5953 if (dnl
->is_primary()) {
5954 // primary link. add stray dentry.
5956 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, dn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, -1);
5957 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, straydn
->get_dir(), PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
5959 // project snaprealm, too
5960 if (in
->snaprealm
|| follows
+ 1 > in
->get_oldest_snap())
5961 in
->project_past_snaprealm_parent(straydn
->get_dir()->inode
->find_snaprealm());
5963 pi
->update_backtrace();
5964 le
->metablob
.add_primary_dentry(straydn
, in
, true, true);
5966 // remote link. update remote inode.
5967 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, dn
->get_dir(), PREDIRTY_DIR
, -1);
5968 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, in
, 0, PREDIRTY_PRIMARY
);
5969 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, in
);
5972 mdcache
->journal_cow_dentry(mdr
.get(), &le
->metablob
, dn
);
5973 le
->metablob
.add_null_dentry(dn
, true);
5976 dout(10) << " noting renamed (unlinked) dir ino " << in
->ino() << " in metablob" << dendl
;
5977 le
->metablob
.renamed_dirino
= in
->ino();
5980 dn
->push_projected_linkage();
5984 mdcache
->project_subtree_rename(in
, dn
->get_dir(), straydn
->get_dir());
5987 journal_and_reply(mdr
, 0, dn
, le
, new C_MDS_unlink_local_finish(this, mdr
, dn
, straydn
));
5990 void Server::_unlink_local_finish(MDRequestRef
& mdr
,
5991 CDentry
*dn
, CDentry
*straydn
,
5994 dout(10) << "_unlink_local_finish " << *dn
<< dendl
;
5996 if (!mdr
->more()->witnessed
.empty())
5997 mdcache
->logged_master_update(mdr
->reqid
);
5999 // unlink main dentry
6000 dn
->get_dir()->unlink_inode(dn
);
6001 dn
->pop_projected_linkage();
6003 // relink as stray? (i.e. was primary link?)
6004 CInode
*strayin
= NULL
;
6005 bool snap_is_new
= false;
6007 dout(20) << " straydn is " << *straydn
<< dendl
;
6008 CDentry::linkage_t
*straydnl
= straydn
->pop_projected_linkage();
6009 strayin
= straydnl
->get_inode();
6011 snap_is_new
= strayin
->snaprealm
? true : false;
6012 mdcache
->touch_dentry_bottom(straydn
);
6015 dn
->mark_dirty(dnpv
, mdr
->ls
);
6018 if (snap_is_new
) //only new if strayin exists
6019 mdcache
->do_realm_invalidate_and_update_notify(strayin
, CEPH_SNAP_OP_SPLIT
, true);
6021 mdcache
->send_dentry_unlink(dn
, straydn
, mdr
);
6023 // update subtree map?
6024 if (straydn
&& strayin
->is_dir())
6025 mdcache
->adjust_subtree_after_rename(strayin
, dn
->get_dir(), true);
6028 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), dn
->get_dir(), META_POP_IWR
);
6031 respond_to_request(mdr
, 0);
6033 // removing a new dn?
6034 dn
->get_dir()->try_remove_unlinked_dn(dn
);
6037 // respond_to_request() drops locks. So stray reintegration can race with us.
6038 if (straydn
&& !straydn
->get_projected_linkage()->is_null()) {
6039 // Tip off the MDCache that this dentry is a stray that
6040 // might be elegible for purge.
6041 mdcache
->notify_stray(straydn
);
6045 bool Server::_rmdir_prepare_witness(MDRequestRef
& mdr
, mds_rank_t who
, vector
<CDentry
*>& trace
, CDentry
*straydn
)
6047 if (mds
->is_cluster_degraded() &&
6048 !mds
->mdsmap
->is_clientreplay_or_active_or_stopping(who
)) {
6049 dout(10) << "_rmdir_prepare_witness mds." << who
<< " is not active" << dendl
;
6050 if (mdr
->more()->waiting_on_slave
.empty())
6051 mds
->wait_for_active_peer(who
, new C_MDS_RetryRequest(mdcache
, mdr
));
6055 dout(10) << "_rmdir_prepare_witness mds." << who
<< dendl
;
6056 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
6057 MMDSSlaveRequest::OP_RMDIRPREP
);
6058 req
->srcdnpath
= filepath(trace
.front()->get_dir()->ino());
6059 for (auto dn
: trace
)
6060 req
->srcdnpath
.push_dentry(dn
->name
);
6061 mdcache
->replicate_stray(straydn
, who
, req
->stray
);
6063 req
->op_stamp
= mdr
->get_op_stamp();
6064 mds
->send_message_mds(req
, who
);
6066 assert(mdr
->more()->waiting_on_slave
.count(who
) == 0);
6067 mdr
->more()->waiting_on_slave
.insert(who
);
6071 struct C_MDS_SlaveRmdirPrep
: public ServerLogContext
{
6072 CDentry
*dn
, *straydn
;
6073 C_MDS_SlaveRmdirPrep(Server
*s
, MDRequestRef
& r
, CDentry
*d
, CDentry
*st
)
6074 : ServerLogContext(s
, r
), dn(d
), straydn(st
) {}
6075 void finish(int r
) override
{
6076 server
->_logged_slave_rmdir(mdr
, dn
, straydn
);
6080 struct C_MDS_SlaveRmdirCommit
: public ServerContext
{
6083 C_MDS_SlaveRmdirCommit(Server
*s
, MDRequestRef
& r
, CDentry
*sd
)
6084 : ServerContext(s
), mdr(r
), straydn(sd
) { }
6085 void finish(int r
) override
{
6086 server
->_commit_slave_rmdir(mdr
, r
, straydn
);
6090 void Server::handle_slave_rmdir_prep(MDRequestRef
& mdr
)
6092 dout(10) << "handle_slave_rmdir_prep " << *mdr
6093 << " " << mdr
->slave_request
->srcdnpath
6094 << " to " << mdr
->slave_request
->destdnpath
6097 vector
<CDentry
*> trace
;
6098 filepath
srcpath(mdr
->slave_request
->srcdnpath
);
6099 dout(10) << " src " << srcpath
<< dendl
;
6101 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, srcpath
, &trace
, &in
, MDS_TRAVERSE_DISCOVERXLOCK
);
6104 mdcache
->find_ino_peers(srcpath
.get_ino(), new C_MDS_RetryRequest(mdcache
, mdr
),
6109 CDentry
*dn
= trace
[trace
.size()-1];
6110 dout(10) << " dn " << *dn
<< dendl
;
6113 assert(mdr
->straydn
);
6114 CDentry
*straydn
= mdr
->straydn
;
6115 dout(10) << " straydn " << *straydn
<< dendl
;
6117 mdr
->set_op_stamp(mdr
->slave_request
->op_stamp
);
6119 rmdir_rollback rollback
;
6120 rollback
.reqid
= mdr
->reqid
;
6121 rollback
.src_dir
= dn
->get_dir()->dirfrag();
6122 rollback
.src_dname
= dn
->name
;
6123 rollback
.dest_dir
= straydn
->get_dir()->dirfrag();
6124 rollback
.dest_dname
= straydn
->name
;
6125 ::encode(rollback
, mdr
->more()->rollback_bl
);
6126 dout(20) << " rollback is " << mdr
->more()->rollback_bl
.length() << " bytes" << dendl
;
6128 // set up commit waiter
6129 mdr
->more()->slave_commit
= new C_MDS_SlaveRmdirCommit(this, mdr
, straydn
);
6131 if (!in
->has_subtree_root_dirfrag(mds
->get_nodeid())) {
6132 dout(10) << " no auth subtree in " << *in
<< ", skipping journal" << dendl
;
6133 dn
->get_dir()->unlink_inode(dn
);
6134 straydn
->get_dir()->link_primary_inode(straydn
, in
);
6136 assert(straydn
->first
>= in
->first
);
6137 in
->first
= straydn
->first
;
6139 mdcache
->adjust_subtree_after_rename(in
, dn
->get_dir(), false);
6141 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
6142 MMDSSlaveRequest::OP_RMDIRPREPACK
);
6143 reply
->mark_not_journaled();
6144 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
6146 // send caps to auth (if we're not already)
6147 if (in
->is_any_caps() && !in
->state_test(CInode::STATE_EXPORTINGCAPS
))
6148 mdcache
->migrator
->export_caps(in
);
6150 mdcache
->touch_dentry_bottom(straydn
); // move stray to end of lru
6152 mdr
->slave_request
->put();
6153 mdr
->slave_request
= 0;
6158 straydn
->push_projected_linkage(in
);
6159 dn
->push_projected_linkage();
6161 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rmdir", mdr
->reqid
, mdr
->slave_to_mds
,
6162 ESlaveUpdate::OP_PREPARE
, ESlaveUpdate::RMDIR
);
6163 mdlog
->start_entry(le
);
6164 le
->rollback
= mdr
->more()->rollback_bl
;
6166 le
->commit
.add_dir_context(straydn
->get_dir());
6167 le
->commit
.add_primary_dentry(straydn
, in
, true);
6168 // slave: no need to journal original dentry
6170 dout(10) << " noting renamed (unlinked) dir ino " << in
->ino() << " in metablob" << dendl
;
6171 le
->commit
.renamed_dirino
= in
->ino();
6173 mdcache
->project_subtree_rename(in
, dn
->get_dir(), straydn
->get_dir());
6175 mdr
->more()->slave_update_journaled
= true;
6176 submit_mdlog_entry(le
, new C_MDS_SlaveRmdirPrep(this, mdr
, dn
, straydn
),
6181 void Server::_logged_slave_rmdir(MDRequestRef
& mdr
, CDentry
*dn
, CDentry
*straydn
)
6183 dout(10) << "_logged_slave_rmdir " << *mdr
<< " on " << *dn
<< dendl
;
6185 // update our cache now, so we are consistent with what is in the journal
6186 // when we journal a subtree map
6187 CInode
*in
= dn
->get_linkage()->get_inode();
6188 dn
->get_dir()->unlink_inode(dn
);
6189 straydn
->pop_projected_linkage();
6190 dn
->pop_projected_linkage();
6191 mdcache
->adjust_subtree_after_rename(in
, dn
->get_dir(), true);
6194 mdr
->slave_request
->put();
6195 mdr
->slave_request
= 0;
6198 if (!mdr
->aborted
) {
6199 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
6200 MMDSSlaveRequest::OP_RMDIRPREPACK
);
6201 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
6203 dout(10) << " abort flag set, finishing" << dendl
;
6204 mdcache
->request_finish(mdr
);
6208 void Server::handle_slave_rmdir_prep_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*ack
)
6210 dout(10) << "handle_slave_rmdir_prep_ack " << *mdr
6211 << " " << *ack
<< dendl
;
6213 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
6215 mdr
->more()->slaves
.insert(from
);
6216 mdr
->more()->witnessed
.insert(from
);
6217 if (!ack
->is_not_journaled())
6218 mdr
->more()->has_journaled_slaves
= true;
6220 // remove from waiting list
6221 assert(mdr
->more()->waiting_on_slave
.count(from
));
6222 mdr
->more()->waiting_on_slave
.erase(from
);
6224 if (mdr
->more()->waiting_on_slave
.empty())
6225 dispatch_client_request(mdr
); // go again!
6227 dout(10) << "still waiting on slaves " << mdr
->more()->waiting_on_slave
<< dendl
;
6230 void Server::_commit_slave_rmdir(MDRequestRef
& mdr
, int r
, CDentry
*straydn
)
6232 dout(10) << "_commit_slave_rmdir " << *mdr
<< " r=" << r
<< dendl
;
6235 if (mdr
->more()->slave_update_journaled
) {
6236 CInode
*strayin
= straydn
->get_projected_linkage()->get_inode();
6237 if (strayin
&& !strayin
->snaprealm
)
6238 mdcache
->clear_dirty_bits_for_stray(strayin
);
6243 if (mdr
->more()->slave_update_journaled
) {
6244 // write a commit to the journal
6245 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rmdir_commit", mdr
->reqid
,
6246 mdr
->slave_to_mds
, ESlaveUpdate::OP_COMMIT
,
6247 ESlaveUpdate::RMDIR
);
6248 mdlog
->start_entry(le
);
6249 submit_mdlog_entry(le
, new C_MDS_CommittedSlave(this, mdr
), mdr
, __func__
);
6252 _committed_slave(mdr
);
6256 do_rmdir_rollback(mdr
->more()->rollback_bl
, mdr
->slave_to_mds
, mdr
);
6260 struct C_MDS_LoggedRmdirRollback
: public ServerLogContext
{
6264 C_MDS_LoggedRmdirRollback(Server
*s
, MDRequestRef
& m
, metareqid_t mr
, CDentry
*d
, CDentry
*st
)
6265 : ServerLogContext(s
, m
), reqid(mr
), dn(d
), straydn(st
) {}
6266 void finish(int r
) override
{
6267 server
->_rmdir_rollback_finish(mdr
, reqid
, dn
, straydn
);
6271 void Server::do_rmdir_rollback(bufferlist
&rbl
, mds_rank_t master
, MDRequestRef
& mdr
)
6273 // unlink the other rollback methods, the rmdir rollback is only
6274 // needed to record the subtree changes in the journal for inode
6275 // replicas who are auth for empty dirfrags. no actual changes to
6276 // the file system are taking place here, so there is no Mutation.
6278 rmdir_rollback rollback
;
6279 bufferlist::iterator p
= rbl
.begin();
6280 ::decode(rollback
, p
);
6282 dout(10) << "do_rmdir_rollback on " << rollback
.reqid
<< dendl
;
6283 mdcache
->add_rollback(rollback
.reqid
, master
); // need to finish this update before resolve finishes
6284 assert(mdr
|| mds
->is_resolve());
6286 CDir
*dir
= mdcache
->get_dirfrag(rollback
.src_dir
);
6288 dir
= mdcache
->get_dirfrag(rollback
.src_dir
.ino
, rollback
.src_dname
);
6290 CDentry
*dn
= dir
->lookup(rollback
.src_dname
);
6292 dout(10) << " dn " << *dn
<< dendl
;
6293 dir
= mdcache
->get_dirfrag(rollback
.dest_dir
);
6295 CDentry
*straydn
= dir
->lookup(rollback
.dest_dname
);
6297 dout(10) << " straydn " << *dn
<< dendl
;
6298 CInode
*in
= straydn
->get_linkage()->get_inode();
6300 if (mdr
&& !mdr
->more()->slave_update_journaled
) {
6301 assert(!in
->has_subtree_root_dirfrag(mds
->get_nodeid()));
6303 straydn
->get_dir()->unlink_inode(straydn
);
6304 dn
->get_dir()->link_primary_inode(dn
, in
);
6306 mdcache
->adjust_subtree_after_rename(in
, straydn
->get_dir(), false);
6308 mdcache
->request_finish(mdr
);
6309 mdcache
->finish_rollback(rollback
.reqid
);
6313 dn
->push_projected_linkage(in
);
6314 straydn
->push_projected_linkage();
6316 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rmdir_rollback", rollback
.reqid
, master
,
6317 ESlaveUpdate::OP_ROLLBACK
, ESlaveUpdate::RMDIR
);
6318 mdlog
->start_entry(le
);
6320 le
->commit
.add_dir_context(dn
->get_dir());
6321 le
->commit
.add_primary_dentry(dn
, in
, true);
6322 // slave: no need to journal straydn
6324 dout(10) << " noting renamed (unlinked) dir ino " << in
->ino() << " in metablob" << dendl
;
6325 le
->commit
.renamed_dirino
= in
->ino();
6327 mdcache
->project_subtree_rename(in
, straydn
->get_dir(), dn
->get_dir());
6329 submit_mdlog_entry(le
,
6330 new C_MDS_LoggedRmdirRollback(this, mdr
,rollback
.reqid
,
6336 void Server::_rmdir_rollback_finish(MDRequestRef
& mdr
, metareqid_t reqid
, CDentry
*dn
, CDentry
*straydn
)
6338 dout(10) << "_rmdir_rollback_finish " << reqid
<< dendl
;
6340 straydn
->get_dir()->unlink_inode(straydn
);
6341 dn
->pop_projected_linkage();
6342 straydn
->pop_projected_linkage();
6344 CInode
*in
= dn
->get_linkage()->get_inode();
6345 mdcache
->adjust_subtree_after_rename(in
, straydn
->get_dir(), true);
6346 if (mds
->is_resolve()) {
6347 CDir
*root
= mdcache
->get_subtree_root(straydn
->get_dir());
6348 mdcache
->try_trim_non_auth_subtree(root
);
6352 mdcache
->request_finish(mdr
);
6354 mdcache
->finish_rollback(reqid
);
6358 /** _dir_is_nonempty[_unlocked]
6360 * check if a directory is non-empty (i.e. we can rmdir it).
6362 * the unlocked varient this is a fastpath check. we can't really be
6363 * sure until we rdlock the filelock.
6365 bool Server::_dir_is_nonempty_unlocked(MDRequestRef
& mdr
, CInode
*in
)
6367 dout(10) << "dir_is_nonempty_unlocked " << *in
<< dendl
;
6368 assert(in
->is_auth());
6370 if (in
->snaprealm
&& in
->snaprealm
->srnode
.snaps
.size())
6371 return true; // in a snapshot!
6374 in
->get_dirfrags(ls
);
6375 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6377 // is the frag obviously non-empty?
6378 if (dir
->is_auth()) {
6379 if (dir
->get_projected_fnode()->fragstat
.size()) {
6380 dout(10) << "dir_is_nonempty_unlocked dirstat has "
6381 << dir
->get_projected_fnode()->fragstat
.size() << " items " << *dir
<< dendl
;
6390 bool Server::_dir_is_nonempty(MDRequestRef
& mdr
, CInode
*in
)
6392 dout(10) << "dir_is_nonempty " << *in
<< dendl
;
6393 assert(in
->is_auth());
6394 assert(in
->filelock
.can_read(mdr
->get_client()));
6396 frag_info_t dirstat
;
6397 version_t dirstat_version
= in
->get_projected_inode()->dirstat
.version
;
6400 in
->get_dirfrags(ls
);
6401 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6403 const fnode_t
*pf
= dir
->get_projected_fnode();
6404 if (pf
->fragstat
.size()) {
6405 dout(10) << "dir_is_nonempty dirstat has "
6406 << pf
->fragstat
.size() << " items " << *dir
<< dendl
;
6410 if (pf
->accounted_fragstat
.version
== dirstat_version
)
6411 dirstat
.add(pf
->accounted_fragstat
);
6413 dirstat
.add(pf
->fragstat
);
6416 return dirstat
.size() != in
->get_projected_inode()->dirstat
.size();
6420 // ======================================================
6423 class C_MDS_rename_finish
: public ServerLogContext
{
6428 C_MDS_rename_finish(Server
*s
, MDRequestRef
& r
,
6429 CDentry
*sdn
, CDentry
*ddn
, CDentry
*stdn
) :
6430 ServerLogContext(s
, r
),
6431 srcdn(sdn
), destdn(ddn
), straydn(stdn
) { }
6432 void finish(int r
) override
{
6434 server
->_rename_finish(mdr
, srcdn
, destdn
, straydn
);
6439 /** handle_client_rename
6441 * rename master is the destdn auth. this is because cached inodes
6442 * must remain connected. thus, any replica of srci, must also
6443 * replicate destdn, and possibly straydn, so that srci (and
6444 * destdn->inode) remain connected during the rename.
6446 * to do this, we freeze srci, then master (destdn auth) verifies that
6447 * all other nodes have also replciated destdn and straydn. note that
6448 * destdn replicas need not also replicate srci. this only works when
6451 * This function takes responsibility for the passed mdr.
6453 void Server::handle_client_rename(MDRequestRef
& mdr
)
6455 MClientRequest
*req
= mdr
->client_request
;
6456 dout(7) << "handle_client_rename " << *req
<< dendl
;
6458 filepath destpath
= req
->get_filepath();
6459 filepath srcpath
= req
->get_filepath2();
6460 if (destpath
.depth() == 0 || srcpath
.depth() == 0) {
6461 respond_to_request(mdr
, -EINVAL
);
6464 const string
&destname
= destpath
.last_dentry();
6466 vector
<CDentry
*>& srctrace
= mdr
->dn
[1];
6467 vector
<CDentry
*>& desttrace
= mdr
->dn
[0];
6469 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
6471 CDentry
*destdn
= rdlock_path_xlock_dentry(mdr
, 0, rdlocks
, wrlocks
, xlocks
, true, false, true);
6472 if (!destdn
) return;
6473 dout(10) << " destdn " << *destdn
<< dendl
;
6474 if (mdr
->snapid
!= CEPH_NOSNAP
) {
6475 respond_to_request(mdr
, -EROFS
);
6478 CDentry::linkage_t
*destdnl
= destdn
->get_projected_linkage();
6479 CDir
*destdir
= destdn
->get_dir();
6480 assert(destdir
->is_auth());
6482 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, srcpath
, &srctrace
, NULL
, MDS_TRAVERSE_DISCOVER
);
6487 dout(10) << "FAIL on ESTALE but attempting recovery" << dendl
;
6488 mdcache
->find_ino_peers(srcpath
.get_ino(), new C_MDS_TryFindInode(this, mdr
));
6490 dout(10) << "FAIL on error " << r
<< dendl
;
6491 respond_to_request(mdr
, r
);
6496 assert(!srctrace
.empty());
6497 CDentry
*srcdn
= srctrace
[srctrace
.size()-1];
6498 dout(10) << " srcdn " << *srcdn
<< dendl
;
6499 if (srcdn
->last
!= CEPH_NOSNAP
) {
6500 respond_to_request(mdr
, -EROFS
);
6503 CDentry::linkage_t
*srcdnl
= srcdn
->get_projected_linkage();
6504 CInode
*srci
= srcdnl
->get_inode();
6505 dout(10) << " srci " << *srci
<< dendl
;
6508 if (!destdnl
->is_null()) {
6509 //dout(10) << "dest dn exists " << *destdn << dendl;
6510 oldin
= mdcache
->get_dentry_inode(destdn
, mdr
, true);
6512 dout(10) << " oldin " << *oldin
<< dendl
;
6514 // non-empty dir? do trivial fast unlocked check, do another check later with read locks
6515 if (oldin
->is_dir() && _dir_is_nonempty_unlocked(mdr
, oldin
)) {
6516 respond_to_request(mdr
, -ENOTEMPTY
);
6520 // if srcdn is replica, need to make sure its linkage is correct
6521 if (srcdn
->is_auth() ||
6522 srcdn
->lock
.can_read(mdr
->get_client()) ||
6523 (srcdn
->lock
.is_xlocked() && srcdn
->lock
.get_xlock_by() == mdr
)) {
6524 // mv /some/thing /to/some/existing_other_thing
6525 if (oldin
->is_dir() && !srci
->is_dir()) {
6526 respond_to_request(mdr
, -EISDIR
);
6529 if (!oldin
->is_dir() && srci
->is_dir()) {
6530 respond_to_request(mdr
, -ENOTDIR
);
6533 if (srci
== oldin
&& !srcdn
->get_dir()->inode
->is_stray()) {
6534 respond_to_request(mdr
, 0); // no-op. POSIX makes no sense.
6540 // -- some sanity checks --
6542 // src+dest traces _must_ share a common ancestor for locking to prevent orphans
6543 if (destpath
.get_ino() != srcpath
.get_ino() &&
6544 !(req
->get_source().is_mds() &&
6545 MDS_INO_IS_MDSDIR(srcpath
.get_ino()))) { // <-- mds 'rename' out of stray dir is ok!
6546 CInode
*srcbase
= srctrace
[0]->get_dir()->get_inode();
6547 CInode
*destbase
= desttrace
[0]->get_dir()->get_inode();
6548 // ok, extend srctrace toward root until it is an ancestor of desttrace.
6549 while (srcbase
!= destbase
&&
6550 !srcbase
->is_projected_ancestor_of(destbase
)) {
6551 CDentry
*pdn
= srcbase
->get_projected_parent_dn();
6552 srctrace
.insert(srctrace
.begin(), pdn
);
6553 dout(10) << "rename prepending srctrace with " << *pdn
<< dendl
;
6554 srcbase
= pdn
->get_dir()->get_inode();
6557 // then, extend destpath until it shares the same parent inode as srcpath.
6558 while (destbase
!= srcbase
) {
6559 CDentry
*pdn
= destbase
->get_projected_parent_dn();
6560 desttrace
.insert(desttrace
.begin(), pdn
);
6561 rdlocks
.insert(&pdn
->lock
);
6562 dout(10) << "rename prepending desttrace with " << *pdn
<< dendl
;
6563 destbase
= pdn
->get_dir()->get_inode();
6565 dout(10) << "rename src and dest traces now share common ancestor " << *destbase
<< dendl
;
6569 if (srcdn
->get_dir() == destdir
&& srcdn
->name
== destname
) {
6570 dout(7) << "rename src=dest, noop" << dendl
;
6571 respond_to_request(mdr
, 0);
6575 // dest a child of src?
6576 // e.g. mv /usr /usr/foo
6577 CDentry
*pdn
= destdir
->inode
->get_projected_parent_dn();
6580 dout(7) << "cannot rename item to be a child of itself" << dendl
;
6581 respond_to_request(mdr
, -EINVAL
);
6584 pdn
= pdn
->get_dir()->inode
->parent
;
6587 // is this a stray migration, reintegration or merge? (sanity checks!)
6588 if (mdr
->reqid
.name
.is_mds() &&
6589 !(MDS_INO_IS_MDSDIR(srcpath
.get_ino()) &&
6590 MDS_INO_IS_MDSDIR(destpath
.get_ino())) &&
6591 !(destdnl
->is_remote() &&
6592 destdnl
->get_remote_ino() == srci
->ino())) {
6593 respond_to_request(mdr
, -EINVAL
); // actually, this won't reply, but whatev.
6597 bool linkmerge
= (srcdnl
->get_inode() == destdnl
->get_inode() &&
6598 (srcdnl
->is_primary() || destdnl
->is_primary()));
6600 dout(10) << " this is a link merge" << dendl
;
6602 // -- create stray dentry? --
6603 CDentry
*straydn
= NULL
;
6604 if (destdnl
->is_primary() && !linkmerge
) {
6605 straydn
= prepare_stray_dentry(mdr
, destdnl
->get_inode());
6608 dout(10) << " straydn is " << *straydn
<< dendl
;
6609 } else if (mdr
->straydn
) {
6610 mdr
->unpin(mdr
->straydn
);
6611 mdr
->straydn
= NULL
;
6614 // -- prepare witness list --
6616 * NOTE: we use _all_ replicas as witnesses.
6617 * this probably isn't totally necessary (esp for file renames),
6618 * but if/when we change that, we have to make sure rejoin is
6619 * sufficiently robust to handle strong rejoins from survivors
6620 * with totally wrong dentry->inode linkage.
6621 * (currently, it can ignore rename effects, because the resolve
6622 * stage will sort them out.)
6624 set
<mds_rank_t
> witnesses
= mdr
->more()->extra_witnesses
;
6625 if (srcdn
->is_auth())
6626 srcdn
->list_replicas(witnesses
);
6628 witnesses
.insert(srcdn
->authority().first
);
6629 if (srcdnl
->is_remote() && !srci
->is_auth())
6630 witnesses
.insert(srci
->authority().first
);
6631 destdn
->list_replicas(witnesses
);
6632 if (destdnl
->is_remote() && !oldin
->is_auth())
6633 witnesses
.insert(oldin
->authority().first
);
6634 dout(10) << " witnesses " << witnesses
<< ", have " << mdr
->more()->witnessed
<< dendl
;
6638 map
<SimpleLock
*, mds_rank_t
> remote_wrlocks
;
6640 // srctrace items. this mirrors locks taken in rdlock_path_xlock_dentry
6641 for (int i
=0; i
<(int)srctrace
.size(); i
++)
6642 rdlocks
.insert(&srctrace
[i
]->lock
);
6643 xlocks
.insert(&srcdn
->lock
);
6644 mds_rank_t srcdirauth
= srcdn
->get_dir()->authority().first
;
6645 if (srcdirauth
!= mds
->get_nodeid()) {
6646 dout(10) << " will remote_wrlock srcdir scatterlocks on mds." << srcdirauth
<< dendl
;
6647 remote_wrlocks
[&srcdn
->get_dir()->inode
->filelock
] = srcdirauth
;
6648 remote_wrlocks
[&srcdn
->get_dir()->inode
->nestlock
] = srcdirauth
;
6650 rdlocks
.insert(&srci
->dirfragtreelock
);
6652 wrlocks
.insert(&srcdn
->get_dir()->inode
->filelock
);
6653 wrlocks
.insert(&srcdn
->get_dir()->inode
->nestlock
);
6655 mds
->locker
->include_snap_rdlocks(rdlocks
, srcdn
->get_dir()->inode
);
6659 wrlocks
.insert(&straydn
->get_dir()->inode
->filelock
);
6660 wrlocks
.insert(&straydn
->get_dir()->inode
->nestlock
);
6661 xlocks
.insert(&straydn
->lock
);
6664 // xlock versionlock on dentries if there are witnesses.
6665 // replicas can't see projected dentry linkages, and will get
6666 // confused if we try to pipeline things.
6667 if (!witnesses
.empty()) {
6668 // take xlock on all projected ancestor dentries for srcdn and destdn.
6669 // this ensures the srcdn and destdn can be traversed to by the witnesses.
6670 for (int i
= 0; i
<(int)srctrace
.size(); i
++) {
6671 if (srctrace
[i
]->is_auth() && srctrace
[i
]->is_projected())
6672 xlocks
.insert(&srctrace
[i
]->versionlock
);
6674 for (int i
=0; i
<(int)desttrace
.size(); i
++) {
6675 if (desttrace
[i
]->is_auth() && desttrace
[i
]->is_projected())
6676 xlocks
.insert(&desttrace
[i
]->versionlock
);
6678 // xlock srci and oldin's primary dentries, so witnesses can call
6679 // open_remote_ino() with 'want_locked=true' when the srcdn or destdn
6681 if (srcdnl
->is_remote())
6682 xlocks
.insert(&srci
->get_projected_parent_dn()->lock
);
6683 if (destdnl
->is_remote())
6684 xlocks
.insert(&oldin
->get_projected_parent_dn()->lock
);
6687 // we need to update srci's ctime. xlock its least contended lock to do that...
6688 xlocks
.insert(&srci
->linklock
);
6690 // xlock oldin (for nlink--)
6692 xlocks
.insert(&oldin
->linklock
);
6693 if (oldin
->is_dir())
6694 rdlocks
.insert(&oldin
->filelock
);
6696 if (srcdnl
->is_primary() && srci
->is_dir())
6697 // FIXME: this should happen whenever we are renamning between
6698 // realms, regardless of the file type
6699 // FIXME: If/when this changes, make sure to update the
6700 // "allowance" in handle_slave_rename_prep
6701 xlocks
.insert(&srci
->snaplock
); // FIXME: an auth bcast could be sufficient?
6703 rdlocks
.insert(&srci
->snaplock
);
6705 CInode
*auth_pin_freeze
= !srcdn
->is_auth() && srcdnl
->is_primary() ? srci
: NULL
;
6706 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
,
6707 &remote_wrlocks
, auth_pin_freeze
))
6710 if ((!mdr
->has_more() || mdr
->more()->witnessed
.empty())) {
6711 if (!check_access(mdr
, srcdn
->get_dir()->get_inode(), MAY_WRITE
))
6714 if (!check_access(mdr
, destdn
->get_dir()->get_inode(), MAY_WRITE
))
6717 if (!check_fragment_space(mdr
, destdn
->get_dir()))
6720 if (!check_access(mdr
, srci
, MAY_WRITE
))
6724 // with read lock, really verify oldin is empty
6727 _dir_is_nonempty(mdr
, oldin
)) {
6728 respond_to_request(mdr
, -ENOTEMPTY
);
6732 /* project_past_snaprealm_parent() will do this job
6734 // moving between snaprealms?
6735 if (srcdnl->is_primary() && srci->is_multiversion() && !srci->snaprealm) {
6736 SnapRealm *srcrealm = srci->find_snaprealm();
6737 SnapRealm *destrealm = destdn->get_dir()->inode->find_snaprealm();
6738 if (srcrealm != destrealm &&
6739 (srcrealm->get_newest_seq() + 1 > srcdn->first ||
6740 destrealm->get_newest_seq() + 1 > srcdn->first)) {
6741 dout(10) << " renaming between snaprealms, creating snaprealm for " << *srci << dendl;
6742 mdcache->snaprealm_create(mdr, srci);
6748 assert(g_conf
->mds_kill_rename_at
!= 1);
6750 // -- open all srcdn inode frags, if any --
6751 // we need these open so that auth can properly delegate from inode to dirfrags
6752 // after the inode is _ours_.
6753 if (srcdnl
->is_primary() &&
6754 !srcdn
->is_auth() &&
6756 dout(10) << "srci is remote dir, setting stickydirs and opening all frags" << dendl
;
6757 mdr
->set_stickydirs(srci
);
6760 srci
->dirfragtree
.get_leaves(frags
);
6761 for (list
<frag_t
>::iterator p
= frags
.begin();
6764 CDir
*dir
= srci
->get_dirfrag(*p
);
6766 dout(10) << " opening " << *p
<< " under " << *srci
<< dendl
;
6767 mdcache
->open_remote_dirfrag(srci
, *p
, new C_MDS_RetryRequest(mdcache
, mdr
));
6773 // -- prepare witnesses --
6775 // do srcdn auth last
6776 mds_rank_t last
= MDS_RANK_NONE
;
6777 if (!srcdn
->is_auth()) {
6778 last
= srcdn
->authority().first
;
6779 mdr
->more()->srcdn_auth_mds
= last
;
6780 // ask auth of srci to mark srci as ambiguous auth if more than two MDS
6781 // are involved in the rename operation.
6782 if (srcdnl
->is_primary() && !mdr
->more()->is_ambiguous_auth
) {
6783 dout(10) << " preparing ambiguous auth for srci" << dendl
;
6784 assert(mdr
->more()->is_remote_frozen_authpin
);
6785 assert(mdr
->more()->rename_inode
== srci
);
6786 _rename_prepare_witness(mdr
, last
, witnesses
, srctrace
, desttrace
, straydn
);
6791 for (set
<mds_rank_t
>::iterator p
= witnesses
.begin();
6792 p
!= witnesses
.end();
6794 if (*p
== last
) continue; // do it last!
6795 if (mdr
->more()->witnessed
.count(*p
)) {
6796 dout(10) << " already witnessed by mds." << *p
<< dendl
;
6797 } else if (mdr
->more()->waiting_on_slave
.count(*p
)) {
6798 dout(10) << " already waiting on witness mds." << *p
<< dendl
;
6800 if (!_rename_prepare_witness(mdr
, *p
, witnesses
, srctrace
, desttrace
, straydn
))
6804 if (!mdr
->more()->waiting_on_slave
.empty())
6805 return; // we're waiting for a witness.
6807 if (last
!= MDS_RANK_NONE
&& mdr
->more()->witnessed
.count(last
) == 0) {
6808 dout(10) << " preparing last witness (srcdn auth)" << dendl
;
6809 assert(mdr
->more()->waiting_on_slave
.count(last
) == 0);
6810 _rename_prepare_witness(mdr
, last
, witnesses
, srctrace
, desttrace
, straydn
);
6814 // test hack: bail after slave does prepare, so we can verify it's _live_ rollback.
6815 if (!mdr
->more()->slaves
.empty() && !srci
->is_dir())
6816 assert(g_conf
->mds_kill_rename_at
!= 3);
6817 if (!mdr
->more()->slaves
.empty() && srci
->is_dir())
6818 assert(g_conf
->mds_kill_rename_at
!= 4);
6820 // -- declare now --
6821 mdr
->set_mds_stamp(ceph_clock_now());
6823 // -- prepare journal entry --
6824 mdr
->ls
= mdlog
->get_current_segment();
6825 EUpdate
*le
= new EUpdate(mdlog
, "rename");
6826 mdlog
->start_entry(le
);
6827 le
->metablob
.add_client_req(mdr
->reqid
, mdr
->client_request
->get_oldest_client_tid());
6828 if (!mdr
->more()->witnessed
.empty()) {
6829 dout(20) << " noting uncommitted_slaves " << mdr
->more()->witnessed
<< dendl
;
6831 le
->reqid
= mdr
->reqid
;
6832 le
->had_slaves
= true;
6834 mdcache
->add_uncommitted_master(mdr
->reqid
, mdr
->ls
, mdr
->more()->witnessed
);
6835 // no need to send frozen auth pin to recovring auth MDS of srci
6836 mdr
->more()->is_remote_frozen_authpin
= false;
6839 _rename_prepare(mdr
, &le
->metablob
, &le
->client_map
, srcdn
, destdn
, straydn
);
6840 if (le
->client_map
.length())
6841 le
->cmapv
= mds
->sessionmap
.get_projected();
6843 // -- commit locally --
6844 C_MDS_rename_finish
*fin
= new C_MDS_rename_finish(this, mdr
, srcdn
, destdn
, straydn
);
6846 journal_and_reply(mdr
, srci
, destdn
, le
, fin
);
6850 void Server::_rename_finish(MDRequestRef
& mdr
, CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
6852 dout(10) << "_rename_finish " << *mdr
<< dendl
;
6854 if (!mdr
->more()->witnessed
.empty())
6855 mdcache
->logged_master_update(mdr
->reqid
);
6858 _rename_apply(mdr
, srcdn
, destdn
, straydn
);
6860 mdcache
->send_dentry_link(destdn
, mdr
);
6862 CDentry::linkage_t
*destdnl
= destdn
->get_linkage();
6863 CInode
*in
= destdnl
->get_inode();
6864 bool need_eval
= mdr
->more()->cap_imports
.count(in
);
6866 // test hack: test slave commit
6867 if (!mdr
->more()->slaves
.empty() && !in
->is_dir())
6868 assert(g_conf
->mds_kill_rename_at
!= 5);
6869 if (!mdr
->more()->slaves
.empty() && in
->is_dir())
6870 assert(g_conf
->mds_kill_rename_at
!= 6);
6873 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), srcdn
->get_dir(), META_POP_IWR
);
6874 if (destdnl
->is_remote() && in
->is_auth())
6875 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), in
, META_POP_IWR
);
6877 // did we import srci? if so, explicitly ack that import that, before we unlock and reply.
6879 assert(g_conf
->mds_kill_rename_at
!= 7);
6882 respond_to_request(mdr
, 0);
6885 mds
->locker
->eval(in
, CEPH_CAP_LOCKS
, true);
6888 // respond_to_request() drops locks. So stray reintegration can race with us.
6889 if (straydn
&& !straydn
->get_projected_linkage()->is_null()) {
6890 mdcache
->notify_stray(straydn
);
6898 bool Server::_rename_prepare_witness(MDRequestRef
& mdr
, mds_rank_t who
, set
<mds_rank_t
> &witnesse
,
6899 vector
<CDentry
*>& srctrace
, vector
<CDentry
*>& dsttrace
, CDentry
*straydn
)
6901 if (mds
->is_cluster_degraded() &&
6902 !mds
->mdsmap
->is_clientreplay_or_active_or_stopping(who
)) {
6903 dout(10) << "_rename_prepare_witness mds." << who
<< " is not active" << dendl
;
6904 if (mdr
->more()->waiting_on_slave
.empty())
6905 mds
->wait_for_active_peer(who
, new C_MDS_RetryRequest(mdcache
, mdr
));
6909 dout(10) << "_rename_prepare_witness mds." << who
<< dendl
;
6910 MMDSSlaveRequest
*req
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
6911 MMDSSlaveRequest::OP_RENAMEPREP
);
6913 req
->srcdnpath
= filepath(srctrace
.front()->get_dir()->ino());
6914 for (auto dn
: srctrace
)
6915 req
->srcdnpath
.push_dentry(dn
->name
);
6916 req
->destdnpath
= filepath(dsttrace
.front()->get_dir()->ino());
6917 for (auto dn
: dsttrace
)
6918 req
->destdnpath
.push_dentry(dn
->name
);
6920 mdcache
->replicate_stray(straydn
, who
, req
->stray
);
6922 req
->srcdn_auth
= mdr
->more()->srcdn_auth_mds
;
6924 // srcdn auth will verify our current witness list is sufficient
6925 req
->witnesses
= witnesse
;
6927 req
->op_stamp
= mdr
->get_op_stamp();
6928 mds
->send_message_mds(req
, who
);
6930 assert(mdr
->more()->waiting_on_slave
.count(who
) == 0);
6931 mdr
->more()->waiting_on_slave
.insert(who
);
6935 version_t
Server::_rename_prepare_import(MDRequestRef
& mdr
, CDentry
*srcdn
, bufferlist
*client_map_bl
)
6937 version_t oldpv
= mdr
->more()->inode_import_v
;
6939 CDentry::linkage_t
*srcdnl
= srcdn
->get_linkage();
6942 bufferlist::iterator blp
= mdr
->more()->inode_import
.begin();
6945 ::decode(mdr
->more()->imported_client_map
, blp
);
6946 ::encode(mdr
->more()->imported_client_map
, *client_map_bl
,
6947 mds
->mdsmap
->get_up_features());
6948 prepare_force_open_sessions(mdr
->more()->imported_client_map
, mdr
->more()->sseq_map
);
6950 list
<ScatterLock
*> updated_scatterlocks
;
6951 mdcache
->migrator
->decode_import_inode(srcdn
, blp
, srcdn
->authority().first
, mdr
->ls
,
6952 mdr
->more()->cap_imports
, updated_scatterlocks
);
6954 // hack: force back to !auth and clean, temporarily
6955 srcdnl
->get_inode()->state_clear(CInode::STATE_AUTH
);
6956 srcdnl
->get_inode()->mark_clean();
6961 bool Server::_need_force_journal(CInode
*diri
, bool empty
)
6964 diri
->get_dirfrags(ls
);
6966 bool force_journal
= false;
6968 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6969 if ((*p
)->is_subtree_root() && (*p
)->get_dir_auth().first
== mds
->get_nodeid()) {
6970 dout(10) << " frag " << (*p
)->get_frag() << " is auth subtree dirfrag, will force journal" << dendl
;
6971 force_journal
= true;
6974 dout(20) << " frag " << (*p
)->get_frag() << " is not auth subtree dirfrag" << dendl
;
6977 // see if any children of our frags are auth subtrees.
6978 list
<CDir
*> subtrees
;
6979 mdcache
->list_subtrees(subtrees
);
6980 dout(10) << " subtrees " << subtrees
<< " frags " << ls
<< dendl
;
6981 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
6983 for (list
<CDir
*>::iterator q
= subtrees
.begin(); q
!= subtrees
.end(); ++q
) {
6984 if (dir
->contains(*q
)) {
6985 if ((*q
)->get_dir_auth().first
== mds
->get_nodeid()) {
6986 dout(10) << " frag " << (*p
)->get_frag() << " contains (maybe) auth subtree, will force journal "
6988 force_journal
= true;
6991 dout(20) << " frag " << (*p
)->get_frag() << " contains but isn't auth for " << **q
<< dendl
;
6993 dout(20) << " frag " << (*p
)->get_frag() << " does not contain " << **q
<< dendl
;
6999 return force_journal
;
7002 void Server::_rename_prepare(MDRequestRef
& mdr
,
7003 EMetaBlob
*metablob
, bufferlist
*client_map_bl
,
7004 CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
7006 dout(10) << "_rename_prepare " << *mdr
<< " " << *srcdn
<< " " << *destdn
<< dendl
;
7008 dout(10) << " straydn " << *straydn
<< dendl
;
7010 CDentry::linkage_t
*srcdnl
= srcdn
->get_projected_linkage();
7011 CDentry::linkage_t
*destdnl
= destdn
->get_projected_linkage();
7012 CInode
*srci
= srcdnl
->get_inode();
7013 CInode
*oldin
= destdnl
->get_inode();
7015 // primary+remote link merge?
7016 bool linkmerge
= (srci
== destdnl
->get_inode() &&
7017 (srcdnl
->is_primary() || destdnl
->is_primary()));
7018 bool silent
= srcdn
->get_dir()->inode
->is_stray();
7020 bool force_journal_dest
= false;
7021 if (srci
->is_dir() && !destdn
->is_auth()) {
7022 if (srci
->is_auth()) {
7023 // if we are auth for srci and exporting it, force journal because journal replay needs
7024 // the source inode to create auth subtrees.
7025 dout(10) << " we are exporting srci, will force journal destdn" << dendl
;
7026 force_journal_dest
= true;
7028 force_journal_dest
= _need_force_journal(srci
, false);
7031 bool force_journal_stray
= false;
7032 if (oldin
&& oldin
->is_dir() && straydn
&& !straydn
->is_auth())
7033 force_journal_stray
= _need_force_journal(oldin
, true);
7036 dout(10) << " merging remote and primary links to the same inode" << dendl
;
7038 dout(10) << " reintegrating stray; will avoid changing nlink or dir mtime" << dendl
;
7039 if (force_journal_dest
)
7040 dout(10) << " forcing journal destdn because we (will) have auth subtrees nested beneath it" << dendl
;
7041 if (force_journal_stray
)
7042 dout(10) << " forcing journal straydn because we (will) have auth subtrees nested beneath it" << dendl
;
7044 if (srci
->is_dir() && (destdn
->is_auth() || force_journal_dest
)) {
7045 dout(10) << " noting renamed dir ino " << srci
->ino() << " in metablob" << dendl
;
7046 metablob
->renamed_dirino
= srci
->ino();
7047 } else if (oldin
&& oldin
->is_dir() && force_journal_stray
) {
7048 dout(10) << " noting rename target dir " << oldin
->ino() << " in metablob" << dendl
;
7049 metablob
->renamed_dirino
= oldin
->ino();
7053 inode_t
*pi
= 0; // renamed inode
7054 inode_t
*tpi
= 0; // target/overwritten inode
7058 if (destdnl
->is_primary()) {
7059 assert(straydn
); // moving to straydn.
7060 // link--, and move.
7061 if (destdn
->is_auth()) {
7062 tpi
= oldin
->project_inode(); //project_snaprealm
7063 tpi
->version
= straydn
->pre_dirty(tpi
->version
);
7064 tpi
->update_backtrace();
7066 straydn
->push_projected_linkage(oldin
);
7067 } else if (destdnl
->is_remote()) {
7069 if (oldin
->is_auth()) {
7070 tpi
= oldin
->project_inode();
7071 tpi
->version
= oldin
->pre_dirty();
7077 if (srcdnl
->is_remote()) {
7080 if (destdn
->is_auth())
7081 mdr
->more()->pvmap
[destdn
] = destdn
->pre_dirty();
7082 destdn
->push_projected_linkage(srcdnl
->get_remote_ino(), srcdnl
->get_remote_d_type());
7084 if (srci
->is_auth()) {
7085 pi
= srci
->project_inode();
7086 pi
->version
= srci
->pre_dirty();
7089 dout(10) << " will merge remote onto primary link" << dendl
;
7090 if (destdn
->is_auth()) {
7091 pi
= oldin
->project_inode();
7092 pi
->version
= mdr
->more()->pvmap
[destdn
] = destdn
->pre_dirty(oldin
->inode
.version
);
7096 if (destdn
->is_auth()) {
7098 if (srcdn
->is_auth())
7099 oldpv
= srci
->get_projected_version();
7101 oldpv
= _rename_prepare_import(mdr
, srcdn
, client_map_bl
);
7103 // note which dirfrags have child subtrees in the journal
7104 // event, so that we can open those (as bounds) during replay.
7105 if (srci
->is_dir()) {
7107 srci
->get_dirfrags(ls
);
7108 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
7110 if (!dir
->is_auth())
7111 metablob
->renamed_dir_frags
.push_back(dir
->get_frag());
7113 dout(10) << " noting renamed dir open frags " << metablob
->renamed_dir_frags
<< dendl
;
7116 pi
= srci
->project_inode(); // project snaprealm if srcdnl->is_primary
7117 // & srcdnl->snaprealm
7118 pi
->version
= mdr
->more()->pvmap
[destdn
] = destdn
->pre_dirty(oldpv
);
7119 pi
->update_backtrace();
7121 destdn
->push_projected_linkage(srci
);
7125 if (srcdn
->is_auth())
7126 mdr
->more()->pvmap
[srcdn
] = srcdn
->pre_dirty();
7127 srcdn
->push_projected_linkage(); // push null linkage
7131 pi
->ctime
= mdr
->get_op_stamp();
7137 tpi
->ctime
= mdr
->get_op_stamp();
7139 destdn
->make_path_string(tpi
->stray_prior_path
, true);
7141 if (tpi
->nlink
== 0)
7142 oldin
->state_set(CInode::STATE_ORPHAN
);
7146 // prepare nesting, mtime updates
7147 int predirty_dir
= silent
? 0:PREDIRTY_DIR
;
7149 // guarantee stray dir is processed first during journal replay. unlink the old inode,
7150 // then link the source inode to destdn
7151 if (destdnl
->is_primary()) {
7153 if (straydn
->is_auth()) {
7154 metablob
->add_dir_context(straydn
->get_dir());
7155 metablob
->add_dir(straydn
->get_dir(), true);
7160 if (destdn
->is_auth() && !destdnl
->is_null()) {
7161 mdcache
->predirty_journal_parents(mdr
, metablob
, oldin
, destdn
->get_dir(),
7162 (destdnl
->is_primary() ? PREDIRTY_PRIMARY
:0)|predirty_dir
, -1);
7163 if (destdnl
->is_primary()) {
7165 mdcache
->predirty_journal_parents(mdr
, metablob
, oldin
, straydn
->get_dir(),
7166 PREDIRTY_PRIMARY
|PREDIRTY_DIR
, 1);
7171 int predirty_primary
= (srcdnl
->is_primary() && srcdn
->get_dir() != destdn
->get_dir()) ? PREDIRTY_PRIMARY
:0;
7172 int flags
= predirty_dir
| predirty_primary
;
7173 if (srcdn
->is_auth())
7174 mdcache
->predirty_journal_parents(mdr
, metablob
, srci
, srcdn
->get_dir(), PREDIRTY_SHALLOW
|flags
, -1);
7175 if (destdn
->is_auth())
7176 mdcache
->predirty_journal_parents(mdr
, metablob
, srci
, destdn
->get_dir(), flags
, 1);
7178 SnapRealm
*src_realm
= srci
->find_snaprealm();
7179 SnapRealm
*dest_realm
= destdn
->get_dir()->inode
->find_snaprealm();
7180 snapid_t next_dest_snap
= dest_realm
->get_newest_seq() + 1;
7182 // add it all to the metablob
7185 if (destdnl
->is_primary()) {
7187 if (destdn
->is_auth()) {
7188 // project snaprealm, too
7189 if (oldin
->snaprealm
|| dest_realm
->get_newest_seq() + 1 > oldin
->get_oldest_snap())
7190 oldin
->project_past_snaprealm_parent(straydn
->get_dir()->inode
->find_snaprealm());
7191 straydn
->first
= MAX(oldin
->first
, next_dest_snap
);
7192 metablob
->add_primary_dentry(straydn
, oldin
, true, true);
7193 } else if (force_journal_stray
) {
7194 dout(10) << " forced journaling straydn " << *straydn
<< dendl
;
7195 metablob
->add_dir_context(straydn
->get_dir());
7196 metablob
->add_primary_dentry(straydn
, oldin
, true);
7198 } else if (destdnl
->is_remote()) {
7199 if (oldin
->is_auth()) {
7201 metablob
->add_dir_context(oldin
->get_projected_parent_dir());
7202 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, oldin
->get_projected_parent_dn(),
7203 CEPH_NOSNAP
, 0, destdnl
);
7204 metablob
->add_primary_dentry(oldin
->get_projected_parent_dn(), oldin
, true);
7210 if (srcdnl
->is_remote()) {
7212 if (destdn
->is_auth() && !destdnl
->is_null())
7213 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, destdn
, CEPH_NOSNAP
, 0, destdnl
);
7215 destdn
->first
= MAX(destdn
->first
, next_dest_snap
);
7217 if (destdn
->is_auth())
7218 metablob
->add_remote_dentry(destdn
, true, srcdnl
->get_remote_ino(), srcdnl
->get_remote_d_type());
7219 if (srci
->get_projected_parent_dn()->is_auth()) { // it's remote
7220 metablob
->add_dir_context(srci
->get_projected_parent_dir());
7221 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, srci
->get_projected_parent_dn(), CEPH_NOSNAP
, 0, srcdnl
);
7222 metablob
->add_primary_dentry(srci
->get_projected_parent_dn(), srci
, true);
7225 if (destdn
->is_auth() && !destdnl
->is_null())
7226 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, destdn
, CEPH_NOSNAP
, 0, destdnl
);
7228 destdn
->first
= MAX(destdn
->first
, next_dest_snap
);
7230 if (destdn
->is_auth())
7231 metablob
->add_primary_dentry(destdn
, destdnl
->get_inode(), true, true);
7233 } else if (srcdnl
->is_primary()) {
7234 // project snap parent update?
7235 if (destdn
->is_auth() && src_realm
!= dest_realm
&&
7236 (srci
->snaprealm
|| src_realm
->get_newest_seq() + 1 > srci
->get_oldest_snap()))
7237 srci
->project_past_snaprealm_parent(dest_realm
);
7239 if (destdn
->is_auth() && !destdnl
->is_null())
7240 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, destdn
, CEPH_NOSNAP
, 0, destdnl
);
7242 destdn
->first
= MAX(destdn
->first
, next_dest_snap
);
7244 if (destdn
->is_auth())
7245 metablob
->add_primary_dentry(destdn
, srci
, true, true);
7246 else if (force_journal_dest
) {
7247 dout(10) << " forced journaling destdn " << *destdn
<< dendl
;
7248 metablob
->add_dir_context(destdn
->get_dir());
7249 metablob
->add_primary_dentry(destdn
, srci
, true);
7250 if (srcdn
->is_auth() && srci
->is_dir()) {
7251 // journal new subtrees root dirfrags
7253 srci
->get_dirfrags(ls
);
7254 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
7257 metablob
->add_dir(dir
, true);
7264 if (srcdn
->is_auth()) {
7265 dout(10) << " journaling srcdn " << *srcdn
<< dendl
;
7266 mdcache
->journal_cow_dentry(mdr
.get(), metablob
, srcdn
, CEPH_NOSNAP
, 0, srcdnl
);
7267 // also journal the inode in case we need do slave rename rollback. It is Ok to add
7268 // both primary and NULL dentries. Because during journal replay, null dentry is
7269 // processed after primary dentry.
7270 if (srcdnl
->is_primary() && !srci
->is_dir() && !destdn
->is_auth())
7271 metablob
->add_primary_dentry(srcdn
, srci
, true);
7272 metablob
->add_null_dentry(srcdn
, true);
7274 dout(10) << " NOT journaling srcdn " << *srcdn
<< dendl
;
7276 // make renamed inode first track the dn
7277 if (srcdnl
->is_primary() && destdn
->is_auth())
7278 srci
->first
= destdn
->first
;
7280 if (oldin
&& oldin
->is_dir()) {
7282 mdcache
->project_subtree_rename(oldin
, destdn
->get_dir(), straydn
->get_dir());
7285 mdcache
->project_subtree_rename(srci
, srcdn
->get_dir(), destdn
->get_dir());
7290 void Server::_rename_apply(MDRequestRef
& mdr
, CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
7292 dout(10) << "_rename_apply " << *mdr
<< " " << *srcdn
<< " " << *destdn
<< dendl
;
7293 dout(10) << " pvs " << mdr
->more()->pvmap
<< dendl
;
7295 CDentry::linkage_t
*srcdnl
= srcdn
->get_linkage();
7296 CDentry::linkage_t
*destdnl
= destdn
->get_linkage();
7298 CInode
*oldin
= destdnl
->get_inode();
7300 // primary+remote link merge?
7301 bool linkmerge
= (srcdnl
->get_inode() == destdnl
->get_inode() &&
7302 (srcdnl
->is_primary() || destdnl
->is_primary()));
7306 if (destdnl
->is_primary()) {
7308 dout(10) << "straydn is " << *straydn
<< dendl
;
7309 destdn
->get_dir()->unlink_inode(destdn
, false);
7311 straydn
->pop_projected_linkage();
7312 if (mdr
->is_slave() && !mdr
->more()->slave_update_journaled
)
7313 assert(!straydn
->is_projected()); // no other projected
7315 mdcache
->touch_dentry_bottom(straydn
); // drop dn as quickly as possible.
7318 if (destdn
->is_auth()) {
7319 bool hadrealm
= (oldin
->snaprealm
? true : false);
7320 oldin
->pop_and_dirty_projected_inode(mdr
->ls
);
7321 if (oldin
->snaprealm
&& !hadrealm
)
7322 mdcache
->do_realm_invalidate_and_update_notify(oldin
, CEPH_SNAP_OP_SPLIT
);
7324 // FIXME this snaprealm is not filled out correctly
7325 //oldin->open_snaprealm(); might be sufficient..
7327 } else if (destdnl
->is_remote()) {
7328 destdn
->get_dir()->unlink_inode(destdn
, false);
7329 if (oldin
->is_auth())
7330 oldin
->pop_and_dirty_projected_inode(mdr
->ls
);
7334 // unlink src before we relink it at dest
7335 CInode
*in
= srcdnl
->get_inode();
7338 bool srcdn_was_remote
= srcdnl
->is_remote();
7339 srcdn
->get_dir()->unlink_inode(srcdn
);
7342 if (srcdn_was_remote
) {
7345 destdnl
= destdn
->pop_projected_linkage();
7346 if (mdr
->is_slave() && !mdr
->more()->slave_update_journaled
)
7347 assert(!destdn
->is_projected()); // no other projected
7349 destdn
->link_remote(destdnl
, in
);
7350 if (destdn
->is_auth())
7351 destdn
->mark_dirty(mdr
->more()->pvmap
[destdn
], mdr
->ls
);
7354 in
->pop_and_dirty_projected_inode(mdr
->ls
);
7356 dout(10) << "merging remote onto primary link" << dendl
;
7357 oldin
->pop_and_dirty_projected_inode(mdr
->ls
);
7361 dout(10) << "merging primary onto remote link" << dendl
;
7362 destdn
->get_dir()->unlink_inode(destdn
, false);
7364 destdnl
= destdn
->pop_projected_linkage();
7365 if (mdr
->is_slave() && !mdr
->more()->slave_update_journaled
)
7366 assert(!destdn
->is_projected()); // no other projected
7368 // srcdn inode import?
7369 if (!srcdn
->is_auth() && destdn
->is_auth()) {
7370 assert(mdr
->more()->inode_import
.length() > 0);
7372 map
<client_t
,Capability::Import
> imported_caps
;
7374 // finish cap imports
7375 finish_force_open_sessions(mdr
->more()->imported_client_map
, mdr
->more()->sseq_map
);
7376 if (mdr
->more()->cap_imports
.count(destdnl
->get_inode())) {
7377 mdcache
->migrator
->finish_import_inode_caps(destdnl
->get_inode(),
7378 mdr
->more()->srcdn_auth_mds
, true,
7379 mdr
->more()->cap_imports
[destdnl
->get_inode()],
7383 mdr
->more()->inode_import
.clear();
7384 ::encode(imported_caps
, mdr
->more()->inode_import
);
7386 /* hack: add an auth pin for each xlock we hold. These were
7387 * remote xlocks previously but now they're local and
7388 * we're going to try and unpin when we xlock_finish. */
7389 for (set
<SimpleLock
*>::iterator i
= mdr
->xlocks
.begin();
7390 i
!= mdr
->xlocks
.end();
7392 if ((*i
)->get_parent() == destdnl
->get_inode() &&
7393 !(*i
)->is_locallock())
7394 mds
->locker
->xlock_import(*i
);
7396 // hack: fix auth bit
7397 in
->state_set(CInode::STATE_AUTH
);
7399 mdr
->clear_ambiguous_auth();
7402 if (destdn
->is_auth()) {
7403 in
->pop_and_dirty_projected_inode(mdr
->ls
);
7406 // FIXME: fix up snaprealm!
7411 if (srcdn
->is_auth())
7412 srcdn
->mark_dirty(mdr
->more()->pvmap
[srcdn
], mdr
->ls
);
7413 srcdn
->pop_projected_linkage();
7414 if (mdr
->is_slave() && !mdr
->more()->slave_update_journaled
)
7415 assert(!srcdn
->is_projected()); // no other projected
7417 // apply remaining projected inodes (nested)
7420 // update subtree map?
7421 if (destdnl
->is_primary() && in
->is_dir())
7422 mdcache
->adjust_subtree_after_rename(in
, srcdn
->get_dir(), true);
7424 if (straydn
&& oldin
->is_dir())
7425 mdcache
->adjust_subtree_after_rename(oldin
, destdn
->get_dir(), true);
7427 // removing a new dn?
7428 if (srcdn
->is_auth())
7429 srcdn
->get_dir()->try_remove_unlinked_dn(srcdn
);
7437 class C_MDS_SlaveRenamePrep
: public ServerLogContext
{
7438 CDentry
*srcdn
, *destdn
, *straydn
;
7440 C_MDS_SlaveRenamePrep(Server
*s
, MDRequestRef
& m
, CDentry
*sr
, CDentry
*de
, CDentry
*st
) :
7441 ServerLogContext(s
, m
), srcdn(sr
), destdn(de
), straydn(st
) {}
7442 void finish(int r
) override
{
7443 server
->_logged_slave_rename(mdr
, srcdn
, destdn
, straydn
);
7447 class C_MDS_SlaveRenameCommit
: public ServerContext
{
7449 CDentry
*srcdn
, *destdn
, *straydn
;
7451 C_MDS_SlaveRenameCommit(Server
*s
, MDRequestRef
& m
, CDentry
*sr
, CDentry
*de
, CDentry
*st
) :
7452 ServerContext(s
), mdr(m
), srcdn(sr
), destdn(de
), straydn(st
) {}
7453 void finish(int r
) override
{
7454 server
->_commit_slave_rename(mdr
, r
, srcdn
, destdn
, straydn
);
7458 class C_MDS_SlaveRenameSessionsFlushed
: public ServerContext
{
7461 C_MDS_SlaveRenameSessionsFlushed(Server
*s
, MDRequestRef
& r
) :
7462 ServerContext(s
), mdr(r
) {}
7463 void finish(int r
) override
{
7464 server
->_slave_rename_sessions_flushed(mdr
);
7468 /* This function DOES put the mdr->slave_request before returning*/
7469 void Server::handle_slave_rename_prep(MDRequestRef
& mdr
)
7471 dout(10) << "handle_slave_rename_prep " << *mdr
7472 << " " << mdr
->slave_request
->srcdnpath
7473 << " to " << mdr
->slave_request
->destdnpath
7476 if (mdr
->slave_request
->is_interrupted()) {
7477 dout(10) << " slave request interrupted, sending noop reply" << dendl
;
7478 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, MMDSSlaveRequest::OP_RENAMEPREPACK
);
7479 reply
->mark_interrupted();
7480 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
7481 mdr
->slave_request
->put();
7482 mdr
->slave_request
= 0;
7487 filepath
destpath(mdr
->slave_request
->destdnpath
);
7488 dout(10) << " dest " << destpath
<< dendl
;
7489 vector
<CDentry
*> trace
;
7490 int r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, destpath
, &trace
, NULL
, MDS_TRAVERSE_DISCOVERXLOCK
);
7493 mdcache
->find_ino_peers(destpath
.get_ino(), new C_MDS_RetryRequest(mdcache
, mdr
),
7497 assert(r
== 0); // we shouldn't get an error here!
7499 CDentry
*destdn
= trace
[trace
.size()-1];
7500 CDentry::linkage_t
*destdnl
= destdn
->get_projected_linkage();
7501 dout(10) << " destdn " << *destdn
<< dendl
;
7505 filepath
srcpath(mdr
->slave_request
->srcdnpath
);
7506 dout(10) << " src " << srcpath
<< dendl
;
7507 CInode
*srci
= nullptr;
7508 r
= mdcache
->path_traverse(mdr
, NULL
, NULL
, srcpath
, &trace
, &srci
, MDS_TRAVERSE_DISCOVERXLOCK
);
7512 // srcpath must not point to a null dentry
7513 assert(srci
!= nullptr);
7515 CDentry
*srcdn
= trace
[trace
.size()-1];
7516 CDentry::linkage_t
*srcdnl
= srcdn
->get_projected_linkage();
7517 dout(10) << " srcdn " << *srcdn
<< dendl
;
7522 bool linkmerge
= (srcdnl
->get_inode() == destdnl
->get_inode() &&
7523 (srcdnl
->is_primary() || destdnl
->is_primary()));
7524 CDentry
*straydn
= mdr
->straydn
;
7525 if (destdnl
->is_primary() && !linkmerge
)
7528 mdr
->set_op_stamp(mdr
->slave_request
->op_stamp
);
7529 mdr
->more()->srcdn_auth_mds
= srcdn
->authority().first
;
7531 // set up commit waiter (early, to clean up any freezing etc we do)
7532 if (!mdr
->more()->slave_commit
)
7533 mdr
->more()->slave_commit
= new C_MDS_SlaveRenameCommit(this, mdr
, srcdn
, destdn
, straydn
);
7536 if (srcdn
->is_auth()) {
7537 set
<mds_rank_t
> srcdnrep
;
7538 srcdn
->list_replicas(srcdnrep
);
7540 bool reply_witness
= false;
7541 if (srcdnl
->is_primary() && !srcdnl
->get_inode()->state_test(CInode::STATE_AMBIGUOUSAUTH
)) {
7544 // - avoid conflicting lock state changes
7545 // - avoid concurrent updates to the inode
7546 // (this could also be accomplished with the versionlock)
7547 int allowance
= 2; // 1 for the mdr auth_pin, 1 for the link lock
7548 allowance
+= srcdnl
->get_inode()->is_dir(); // for the snap lock
7549 dout(10) << " freezing srci " << *srcdnl
->get_inode() << " with allowance " << allowance
<< dendl
;
7550 bool frozen_inode
= srcdnl
->get_inode()->freeze_inode(allowance
);
7552 // unfreeze auth pin after freezing the inode to avoid queueing waiters
7553 if (srcdnl
->get_inode()->is_frozen_auth_pin())
7554 mdr
->unfreeze_auth_pin();
7556 if (!frozen_inode
) {
7557 srcdnl
->get_inode()->add_waiter(CInode::WAIT_FROZEN
, new C_MDS_RetryRequest(mdcache
, mdr
));
7562 * set ambiguous auth for srci
7563 * NOTE: we don't worry about ambiguous cache expire as we do
7564 * with subtree migrations because all slaves will pin
7565 * srcdn->get_inode() for duration of this rename.
7567 mdr
->set_ambiguous_auth(srcdnl
->get_inode());
7569 // just mark the source inode as ambiguous auth if more than two MDS are involved.
7570 // the master will send another OP_RENAMEPREP slave request later.
7571 if (mdr
->slave_request
->witnesses
.size() > 1) {
7572 dout(10) << " set srci ambiguous auth; providing srcdn replica list" << dendl
;
7573 reply_witness
= true;
7576 // make sure bystanders have received all lock related messages
7577 for (set
<mds_rank_t
>::iterator p
= srcdnrep
.begin(); p
!= srcdnrep
.end(); ++p
) {
7578 if (*p
== mdr
->slave_to_mds
||
7579 (mds
->is_cluster_degraded() &&
7580 !mds
->mdsmap
->is_clientreplay_or_active_or_stopping(*p
)))
7582 MMDSSlaveRequest
*notify
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
7583 MMDSSlaveRequest::OP_RENAMENOTIFY
);
7584 mds
->send_message_mds(notify
, *p
);
7585 mdr
->more()->waiting_on_slave
.insert(*p
);
7588 // make sure clients have received all cap related messages
7589 set
<client_t
> export_client_set
;
7590 mdcache
->migrator
->get_export_client_set(srcdnl
->get_inode(), export_client_set
);
7592 MDSGatherBuilder
gather(g_ceph_context
);
7593 flush_client_sessions(export_client_set
, gather
);
7594 if (gather
.has_subs()) {
7595 mdr
->more()->waiting_on_slave
.insert(MDS_RANK_NONE
);
7596 gather
.set_finisher(new C_MDS_SlaveRenameSessionsFlushed(this, mdr
));
7601 // is witness list sufficient?
7602 for (set
<mds_rank_t
>::iterator p
= srcdnrep
.begin(); p
!= srcdnrep
.end(); ++p
) {
7603 if (*p
== mdr
->slave_to_mds
||
7604 mdr
->slave_request
->witnesses
.count(*p
)) continue;
7605 dout(10) << " witness list insufficient; providing srcdn replica list" << dendl
;
7606 reply_witness
= true;
7610 if (reply_witness
) {
7611 assert(!srcdnrep
.empty());
7612 MMDSSlaveRequest
*reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
,
7613 MMDSSlaveRequest::OP_RENAMEPREPACK
);
7614 reply
->witnesses
.swap(srcdnrep
);
7615 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
7616 mdr
->slave_request
->put();
7617 mdr
->slave_request
= 0;
7620 dout(10) << " witness list sufficient: includes all srcdn replicas" << dendl
;
7621 if (!mdr
->more()->waiting_on_slave
.empty()) {
7622 dout(10) << " still waiting for rename notify acks from "
7623 << mdr
->more()->waiting_on_slave
<< dendl
;
7626 } else if (srcdnl
->is_primary() && srcdn
->authority() != destdn
->authority()) {
7627 // set ambiguous auth for srci on witnesses
7628 mdr
->set_ambiguous_auth(srcdnl
->get_inode());
7631 // encode everything we'd need to roll this back... basically, just the original state.
7632 rename_rollback rollback
;
7634 rollback
.reqid
= mdr
->reqid
;
7636 rollback
.orig_src
.dirfrag
= srcdn
->get_dir()->dirfrag();
7637 rollback
.orig_src
.dirfrag_old_mtime
= srcdn
->get_dir()->get_projected_fnode()->fragstat
.mtime
;
7638 rollback
.orig_src
.dirfrag_old_rctime
= srcdn
->get_dir()->get_projected_fnode()->rstat
.rctime
;
7639 rollback
.orig_src
.dname
= srcdn
->name
;
7640 if (srcdnl
->is_primary())
7641 rollback
.orig_src
.ino
= srcdnl
->get_inode()->ino();
7643 assert(srcdnl
->is_remote());
7644 rollback
.orig_src
.remote_ino
= srcdnl
->get_remote_ino();
7645 rollback
.orig_src
.remote_d_type
= srcdnl
->get_remote_d_type();
7648 rollback
.orig_dest
.dirfrag
= destdn
->get_dir()->dirfrag();
7649 rollback
.orig_dest
.dirfrag_old_mtime
= destdn
->get_dir()->get_projected_fnode()->fragstat
.mtime
;
7650 rollback
.orig_dest
.dirfrag_old_rctime
= destdn
->get_dir()->get_projected_fnode()->rstat
.rctime
;
7651 rollback
.orig_dest
.dname
= destdn
->name
;
7652 if (destdnl
->is_primary())
7653 rollback
.orig_dest
.ino
= destdnl
->get_inode()->ino();
7654 else if (destdnl
->is_remote()) {
7655 rollback
.orig_dest
.remote_ino
= destdnl
->get_remote_ino();
7656 rollback
.orig_dest
.remote_d_type
= destdnl
->get_remote_d_type();
7660 rollback
.stray
.dirfrag
= straydn
->get_dir()->dirfrag();
7661 rollback
.stray
.dirfrag_old_mtime
= straydn
->get_dir()->get_projected_fnode()->fragstat
.mtime
;
7662 rollback
.stray
.dirfrag_old_rctime
= straydn
->get_dir()->get_projected_fnode()->rstat
.rctime
;
7663 rollback
.stray
.dname
= straydn
->name
;
7665 ::encode(rollback
, mdr
->more()->rollback_bl
);
7666 dout(20) << " rollback is " << mdr
->more()->rollback_bl
.length() << " bytes" << dendl
;
7669 mdr
->ls
= mdlog
->get_current_segment();
7670 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rename_prep", mdr
->reqid
, mdr
->slave_to_mds
,
7671 ESlaveUpdate::OP_PREPARE
, ESlaveUpdate::RENAME
);
7672 mdlog
->start_entry(le
);
7673 le
->rollback
= mdr
->more()->rollback_bl
;
7675 bufferlist blah
; // inode import data... obviously not used if we're the slave
7676 _rename_prepare(mdr
, &le
->commit
, &blah
, srcdn
, destdn
, straydn
);
7678 if (le
->commit
.empty()) {
7679 dout(10) << " empty metablob, skipping journal" << dendl
;
7680 mdlog
->cancel_entry(le
);
7682 _logged_slave_rename(mdr
, srcdn
, destdn
, straydn
);
7684 mdr
->more()->slave_update_journaled
= true;
7685 submit_mdlog_entry(le
, new C_MDS_SlaveRenamePrep(this, mdr
, srcdn
, destdn
, straydn
),
7691 void Server::_logged_slave_rename(MDRequestRef
& mdr
,
7692 CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
7694 dout(10) << "_logged_slave_rename " << *mdr
<< dendl
;
7697 MMDSSlaveRequest
*reply
= NULL
;
7698 if (!mdr
->aborted
) {
7699 reply
= new MMDSSlaveRequest(mdr
->reqid
, mdr
->attempt
, MMDSSlaveRequest::OP_RENAMEPREPACK
);
7700 if (!mdr
->more()->slave_update_journaled
)
7701 reply
->mark_not_journaled();
7704 CDentry::linkage_t
*srcdnl
= srcdn
->get_linkage();
7705 CDentry::linkage_t
*destdnl
= NULL
;
7706 //CDentry::linkage_t *straydnl = straydn ? straydn->get_linkage() : 0;
7709 if (srcdn
->is_auth() && srcdnl
->is_primary()) {
7710 // set export bounds for CInode::encode_export()
7712 if (srcdnl
->get_inode()->is_dir()) {
7713 srcdnl
->get_inode()->get_dirfrags(bounds
);
7714 for (list
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
)
7715 (*p
)->state_set(CDir::STATE_EXPORTBOUND
);
7718 map
<client_t
,entity_inst_t
> exported_client_map
;
7720 mdcache
->migrator
->encode_export_inode(srcdnl
->get_inode(), inodebl
,
7721 exported_client_map
);
7723 for (list
<CDir
*>::iterator p
= bounds
.begin(); p
!= bounds
.end(); ++p
)
7724 (*p
)->state_clear(CDir::STATE_EXPORTBOUND
);
7727 ::encode(exported_client_map
, reply
->inode_export
, mds
->mdsmap
->get_up_features());
7728 reply
->inode_export
.claim_append(inodebl
);
7729 reply
->inode_export_v
= srcdnl
->get_inode()->inode
.version
;
7732 // remove mdr auth pin
7733 mdr
->auth_unpin(srcdnl
->get_inode());
7734 mdr
->more()->is_inode_exporter
= true;
7736 if (srcdnl
->get_inode()->is_dirty())
7737 srcdnl
->get_inode()->mark_clean();
7739 dout(10) << " exported srci " << *srcdnl
->get_inode() << dendl
;
7743 _rename_apply(mdr
, srcdn
, destdn
, straydn
);
7745 destdnl
= destdn
->get_linkage();
7748 mds
->balancer
->hit_dir(mdr
->get_mds_stamp(), srcdn
->get_dir(), META_POP_IWR
);
7749 if (destdnl
->get_inode() && destdnl
->get_inode()->is_auth())
7750 mds
->balancer
->hit_inode(mdr
->get_mds_stamp(), destdnl
->get_inode(),
7754 mdr
->slave_request
->put();
7755 mdr
->slave_request
= 0;
7759 mds
->send_message_mds(reply
, mdr
->slave_to_mds
);
7761 assert(mdr
->aborted
);
7762 dout(10) << " abort flag set, finishing" << dendl
;
7763 mdcache
->request_finish(mdr
);
7767 void Server::_commit_slave_rename(MDRequestRef
& mdr
, int r
,
7768 CDentry
*srcdn
, CDentry
*destdn
, CDentry
*straydn
)
7770 dout(10) << "_commit_slave_rename " << *mdr
<< " r=" << r
<< dendl
;
7772 CDentry::linkage_t
*destdnl
= destdn
->get_linkage();
7774 list
<MDSInternalContextBase
*> finished
;
7776 // unfreeze+singleauth inode
7777 // hmm, do i really need to delay this?
7778 if (mdr
->more()->is_inode_exporter
) {
7780 CInode
*in
= destdnl
->get_inode();
7783 // we exported, clear out any xlocks that we moved to another MDS
7784 set
<SimpleLock
*>::iterator i
= mdr
->xlocks
.begin();
7785 while (i
!= mdr
->xlocks
.end()) {
7786 SimpleLock
*lock
= *i
++;
7788 // we only care about xlocks on the exported inode
7789 if (lock
->get_parent() == in
&&
7790 !lock
->is_locallock())
7791 mds
->locker
->xlock_export(lock
, mdr
.get());
7794 map
<client_t
,Capability::Import
> peer_imported
;
7795 bufferlist::iterator bp
= mdr
->more()->inode_import
.begin();
7796 ::decode(peer_imported
, bp
);
7798 dout(10) << " finishing inode export on " << *destdnl
->get_inode() << dendl
;
7799 mdcache
->migrator
->finish_export_inode(destdnl
->get_inode(),
7800 mdr
->get_mds_stamp(),
7801 mdr
->slave_to_mds
, peer_imported
, finished
);
7802 mds
->queue_waiters(finished
); // this includes SINGLEAUTH waiters.
7805 assert(destdnl
->get_inode()->is_frozen_inode());
7806 destdnl
->get_inode()->unfreeze_inode(finished
);
7810 if (mdr
->more()->is_ambiguous_auth
) {
7811 mdr
->more()->rename_inode
->clear_ambiguous_auth(finished
);
7812 mdr
->more()->is_ambiguous_auth
= false;
7815 if (straydn
&& mdr
->more()->slave_update_journaled
) {
7816 CInode
*strayin
= straydn
->get_projected_linkage()->get_inode();
7817 if (strayin
&& !strayin
->snaprealm
)
7818 mdcache
->clear_dirty_bits_for_stray(strayin
);
7821 mds
->queue_waiters(finished
);
7824 if (mdr
->more()->slave_update_journaled
) {
7825 // write a commit to the journal
7826 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rename_commit", mdr
->reqid
,
7827 mdr
->slave_to_mds
, ESlaveUpdate::OP_COMMIT
,
7828 ESlaveUpdate::RENAME
);
7829 mdlog
->start_entry(le
);
7830 submit_mdlog_entry(le
, new C_MDS_CommittedSlave(this, mdr
), mdr
, __func__
);
7833 _committed_slave(mdr
);
7838 // rollback_bl may be empty if we froze the inode but had to provide an expanded
7839 // witness list from the master, and they failed before we tried prep again.
7840 if (mdr
->more()->rollback_bl
.length()) {
7841 if (mdr
->more()->is_inode_exporter
) {
7842 dout(10) << " reversing inode export of " << *destdnl
->get_inode() << dendl
;
7843 destdnl
->get_inode()->abort_export();
7845 if (mdcache
->is_ambiguous_slave_update(mdr
->reqid
, mdr
->slave_to_mds
)) {
7846 mdcache
->remove_ambiguous_slave_update(mdr
->reqid
, mdr
->slave_to_mds
);
7847 // rollback but preserve the slave request
7848 do_rename_rollback(mdr
->more()->rollback_bl
, mdr
->slave_to_mds
, mdr
, false);
7849 mdr
->more()->rollback_bl
.clear();
7851 do_rename_rollback(mdr
->more()->rollback_bl
, mdr
->slave_to_mds
, mdr
, true);
7853 dout(10) << " rollback_bl empty, not rollback back rename (master failed after getting extra witnesses?)" << dendl
;
7855 if (mdr
->more()->is_ambiguous_auth
) {
7856 if (srcdn
->is_auth())
7857 mdr
->more()->rename_inode
->unfreeze_inode(finished
);
7859 mdr
->more()->rename_inode
->clear_ambiguous_auth(finished
);
7860 mdr
->more()->is_ambiguous_auth
= false;
7862 mds
->queue_waiters(finished
);
7863 mdcache
->request_finish(mdr
);
7868 void _rollback_repair_dir(MutationRef
& mut
, CDir
*dir
, rename_rollback::drec
&r
, utime_t ctime
,
7869 bool isdir
, int linkunlink
, nest_info_t
&rstat
)
7872 pf
= dir
->project_fnode();
7873 mut
->add_projected_fnode(dir
);
7874 pf
->version
= dir
->pre_dirty();
7877 pf
->fragstat
.nsubdirs
+= linkunlink
;
7879 pf
->fragstat
.nfiles
+= linkunlink
;
7882 pf
->rstat
.rbytes
+= linkunlink
* rstat
.rbytes
;
7883 pf
->rstat
.rfiles
+= linkunlink
* rstat
.rfiles
;
7884 pf
->rstat
.rsubdirs
+= linkunlink
* rstat
.rsubdirs
;
7885 pf
->rstat
.rsnaprealms
+= linkunlink
* rstat
.rsnaprealms
;
7887 if (pf
->fragstat
.mtime
== ctime
) {
7888 pf
->fragstat
.mtime
= r
.dirfrag_old_mtime
;
7889 if (pf
->rstat
.rctime
== ctime
)
7890 pf
->rstat
.rctime
= r
.dirfrag_old_rctime
;
7892 mut
->add_updated_lock(&dir
->get_inode()->filelock
);
7893 mut
->add_updated_lock(&dir
->get_inode()->nestlock
);
7896 struct C_MDS_LoggedRenameRollback
: public ServerLogContext
{
7903 C_MDS_LoggedRenameRollback(Server
*s
, MutationRef
& m
, MDRequestRef
& r
,
7904 CDentry
*sd
, version_t pv
, CDentry
*dd
,
7905 CDentry
*st
, bool f
) :
7906 ServerLogContext(s
, r
), mut(m
), srcdn(sd
), srcdnpv(pv
), destdn(dd
),
7907 straydn(st
), finish_mdr(f
) {}
7908 void finish(int r
) override
{
7909 server
->_rename_rollback_finish(mut
, mdr
, srcdn
, srcdnpv
,
7910 destdn
, straydn
, finish_mdr
);
7914 void Server::do_rename_rollback(bufferlist
&rbl
, mds_rank_t master
, MDRequestRef
& mdr
,
7917 rename_rollback rollback
;
7918 bufferlist::iterator p
= rbl
.begin();
7919 ::decode(rollback
, p
);
7921 dout(10) << "do_rename_rollback on " << rollback
.reqid
<< dendl
;
7922 // need to finish this update before sending resolve to claim the subtree
7923 mdcache
->add_rollback(rollback
.reqid
, master
);
7925 MutationRef
mut(new MutationImpl(nullptr, utime_t(), rollback
.reqid
));
7926 mut
->ls
= mds
->mdlog
->get_current_segment();
7928 CDentry
*srcdn
= NULL
;
7929 CDir
*srcdir
= mdcache
->get_dirfrag(rollback
.orig_src
.dirfrag
);
7931 srcdir
= mdcache
->get_dirfrag(rollback
.orig_src
.dirfrag
.ino
, rollback
.orig_src
.dname
);
7933 dout(10) << " srcdir " << *srcdir
<< dendl
;
7934 srcdn
= srcdir
->lookup(rollback
.orig_src
.dname
);
7936 dout(10) << " srcdn " << *srcdn
<< dendl
;
7937 assert(srcdn
->get_linkage()->is_null());
7939 dout(10) << " srcdn not found" << dendl
;
7941 dout(10) << " srcdir not found" << dendl
;
7943 CDentry
*destdn
= NULL
;
7944 CDir
*destdir
= mdcache
->get_dirfrag(rollback
.orig_dest
.dirfrag
);
7946 destdir
= mdcache
->get_dirfrag(rollback
.orig_dest
.dirfrag
.ino
, rollback
.orig_dest
.dname
);
7948 dout(10) << " destdir " << *destdir
<< dendl
;
7949 destdn
= destdir
->lookup(rollback
.orig_dest
.dname
);
7951 dout(10) << " destdn " << *destdn
<< dendl
;
7953 dout(10) << " destdn not found" << dendl
;
7955 dout(10) << " destdir not found" << dendl
;
7958 if (rollback
.orig_src
.ino
) {
7959 in
= mdcache
->get_inode(rollback
.orig_src
.ino
);
7960 if (in
&& in
->is_dir())
7961 assert(srcdn
&& destdn
);
7963 in
= mdcache
->get_inode(rollback
.orig_src
.remote_ino
);
7965 CDir
*straydir
= NULL
;
7966 CDentry
*straydn
= NULL
;
7967 if (rollback
.stray
.dirfrag
.ino
) {
7968 straydir
= mdcache
->get_dirfrag(rollback
.stray
.dirfrag
);
7970 dout(10) << "straydir " << *straydir
<< dendl
;
7971 straydn
= straydir
->lookup(rollback
.stray
.dname
);
7973 dout(10) << " straydn " << *straydn
<< dendl
;
7974 assert(straydn
->get_linkage()->is_primary());
7976 dout(10) << " straydn not found" << dendl
;
7978 dout(10) << "straydir not found" << dendl
;
7981 CInode
*target
= NULL
;
7982 if (rollback
.orig_dest
.ino
) {
7983 target
= mdcache
->get_inode(rollback
.orig_dest
.ino
);
7985 assert(destdn
&& straydn
);
7986 } else if (rollback
.orig_dest
.remote_ino
)
7987 target
= mdcache
->get_inode(rollback
.orig_dest
.remote_ino
);
7989 // can't use is_auth() in the resolve stage
7990 mds_rank_t whoami
= mds
->get_nodeid();
7992 assert(!destdn
|| destdn
->authority().first
!= whoami
);
7993 assert(!straydn
|| straydn
->authority().first
!= whoami
);
7995 bool force_journal_src
= false;
7996 bool force_journal_dest
= false;
7997 if (in
&& in
->is_dir() && srcdn
->authority().first
!= whoami
)
7998 force_journal_src
= _need_force_journal(in
, false);
7999 if (in
&& target
&& target
->is_dir())
8000 force_journal_dest
= _need_force_journal(in
, true);
8002 version_t srcdnpv
= 0;
8005 if (srcdn
->authority().first
== whoami
)
8006 srcdnpv
= srcdn
->pre_dirty();
8007 if (rollback
.orig_src
.ino
) {
8009 srcdn
->push_projected_linkage(in
);
8011 srcdn
->push_projected_linkage(rollback
.orig_src
.remote_ino
,
8012 rollback
.orig_src
.remote_d_type
);
8017 if (in
->authority().first
== whoami
) {
8018 pi
= in
->project_inode();
8019 mut
->add_projected_inode(in
);
8020 pi
->version
= in
->pre_dirty();
8022 pi
= in
->get_projected_inode();
8023 if (pi
->ctime
== rollback
.ctime
)
8024 pi
->ctime
= rollback
.orig_src
.old_ctime
;
8027 if (srcdn
&& srcdn
->authority().first
== whoami
) {
8029 _rollback_repair_dir(mut
, srcdir
, rollback
.orig_src
, rollback
.ctime
,
8030 in
? in
->is_dir() : false, 1, pi
? pi
->accounted_rstat
: blah
);
8035 if (rollback
.orig_dest
.ino
&& target
) {
8036 destdn
->push_projected_linkage(target
);
8037 } else if (rollback
.orig_dest
.remote_ino
) {
8038 destdn
->push_projected_linkage(rollback
.orig_dest
.remote_ino
,
8039 rollback
.orig_dest
.remote_d_type
);
8041 // the dentry will be trimmed soon, it's ok to have wrong linkage
8042 if (rollback
.orig_dest
.ino
)
8043 assert(mds
->is_resolve());
8044 destdn
->push_projected_linkage();
8049 straydn
->push_projected_linkage();
8053 if (target
->authority().first
== whoami
) {
8054 ti
= target
->project_inode();
8055 mut
->add_projected_inode(target
);
8056 ti
->version
= target
->pre_dirty();
8058 ti
= target
->get_projected_inode();
8059 if (ti
->ctime
== rollback
.ctime
)
8060 ti
->ctime
= rollback
.orig_dest
.old_ctime
;
8061 if (MDS_INO_IS_STRAY(rollback
.orig_src
.dirfrag
.ino
)) {
8062 if (MDS_INO_IS_STRAY(rollback
.orig_dest
.dirfrag
.ino
))
8063 assert(!rollback
.orig_dest
.ino
&& !rollback
.orig_dest
.remote_ino
);
8065 assert(rollback
.orig_dest
.remote_ino
&&
8066 rollback
.orig_dest
.remote_ino
== rollback
.orig_src
.ino
);
8072 dout(0) << " srcdn back to " << *srcdn
<< dendl
;
8074 dout(0) << " srci back to " << *in
<< dendl
;
8076 dout(0) << " destdn back to " << *destdn
<< dendl
;
8078 dout(0) << " desti back to " << *target
<< dendl
;
8081 ESlaveUpdate
*le
= new ESlaveUpdate(mdlog
, "slave_rename_rollback", rollback
.reqid
, master
,
8082 ESlaveUpdate::OP_ROLLBACK
, ESlaveUpdate::RENAME
);
8083 mdlog
->start_entry(le
);
8085 if (srcdn
&& (srcdn
->authority().first
== whoami
|| force_journal_src
)) {
8086 le
->commit
.add_dir_context(srcdir
);
8087 if (rollback
.orig_src
.ino
)
8088 le
->commit
.add_primary_dentry(srcdn
, 0, true);
8090 le
->commit
.add_remote_dentry(srcdn
, true);
8093 if (!rollback
.orig_src
.ino
&& // remote linkage
8094 in
&& in
->authority().first
== whoami
) {
8095 le
->commit
.add_dir_context(in
->get_projected_parent_dir());
8096 le
->commit
.add_primary_dentry(in
->get_projected_parent_dn(), in
, true);
8099 if (force_journal_dest
) {
8100 assert(rollback
.orig_dest
.ino
);
8101 le
->commit
.add_dir_context(destdir
);
8102 le
->commit
.add_primary_dentry(destdn
, 0, true);
8105 // slave: no need to journal straydn
8107 if (target
&& target
!= in
&& target
->authority().first
== whoami
) {
8108 assert(rollback
.orig_dest
.remote_ino
);
8109 le
->commit
.add_dir_context(target
->get_projected_parent_dir());
8110 le
->commit
.add_primary_dentry(target
->get_projected_parent_dn(), target
, true);
8113 if (in
&& in
->is_dir() && (srcdn
->authority().first
== whoami
|| force_journal_src
)) {
8114 dout(10) << " noting renamed dir ino " << in
->ino() << " in metablob" << dendl
;
8115 le
->commit
.renamed_dirino
= in
->ino();
8116 if (srcdn
->authority().first
== whoami
) {
8118 in
->get_dirfrags(ls
);
8119 for (list
<CDir
*>::iterator p
= ls
.begin(); p
!= ls
.end(); ++p
) {
8121 if (!dir
->is_auth())
8122 le
->commit
.renamed_dir_frags
.push_back(dir
->get_frag());
8124 dout(10) << " noting renamed dir open frags " << le
->commit
.renamed_dir_frags
<< dendl
;
8126 } else if (force_journal_dest
) {
8127 dout(10) << " noting rename target ino " << target
->ino() << " in metablob" << dendl
;
8128 le
->commit
.renamed_dirino
= target
->ino();
8131 if (target
&& target
->is_dir()) {
8133 mdcache
->project_subtree_rename(target
, straydir
, destdir
);
8136 if (in
&& in
->is_dir()) {
8138 mdcache
->project_subtree_rename(in
, destdir
, srcdir
);
8141 if (mdr
&& !mdr
->more()->slave_update_journaled
) {
8142 assert(le
->commit
.empty());
8143 mdlog
->cancel_entry(le
);
8145 _rename_rollback_finish(mut
, mdr
, srcdn
, srcdnpv
, destdn
, straydn
, finish_mdr
);
8147 assert(!le
->commit
.empty());
8149 mdr
->more()->slave_update_journaled
= false;
8150 MDSLogContextBase
*fin
= new C_MDS_LoggedRenameRollback(this, mut
, mdr
, srcdn
, srcdnpv
,
8151 destdn
, straydn
, finish_mdr
);
8152 submit_mdlog_entry(le
, fin
, mdr
, __func__
);
8157 void Server::_rename_rollback_finish(MutationRef
& mut
, MDRequestRef
& mdr
, CDentry
*srcdn
,
8158 version_t srcdnpv
, CDentry
*destdn
,
8159 CDentry
*straydn
, bool finish_mdr
)
8161 dout(10) << "_rename_rollback_finish " << mut
->reqid
<< dendl
;
8164 straydn
->get_dir()->unlink_inode(straydn
);
8165 straydn
->pop_projected_linkage();
8168 destdn
->get_dir()->unlink_inode(destdn
);
8169 destdn
->pop_projected_linkage();
8172 srcdn
->pop_projected_linkage();
8173 if (srcdn
->authority().first
== mds
->get_nodeid())
8174 srcdn
->mark_dirty(srcdnpv
, mut
->ls
);
8179 if (srcdn
&& srcdn
->get_linkage()->is_primary()) {
8180 CInode
*in
= srcdn
->get_linkage()->get_inode();
8181 if (srcdn
->authority().first
== mds
->get_nodeid())
8182 in
->state_set(CInode::STATE_AUTH
);
8183 // update subtree map?
8184 if (in
&& in
->is_dir()) {
8186 mdcache
->adjust_subtree_after_rename(in
, destdn
->get_dir(), true);
8191 CInode
*oldin
= destdn
->get_linkage()->get_inode();
8192 // update subtree map?
8193 if (oldin
&& oldin
->is_dir()) {
8195 mdcache
->adjust_subtree_after_rename(oldin
, straydn
->get_dir(), true);
8199 if (mds
->is_resolve()) {
8202 root
= mdcache
->get_subtree_root(straydn
->get_dir());
8204 root
= mdcache
->get_subtree_root(destdn
->get_dir());
8206 mdcache
->try_trim_non_auth_subtree(root
);
8210 list
<MDSInternalContextBase
*> finished
;
8211 if (mdr
->more()->is_ambiguous_auth
) {
8212 if (srcdn
->is_auth())
8213 mdr
->more()->rename_inode
->unfreeze_inode(finished
);
8215 mdr
->more()->rename_inode
->clear_ambiguous_auth(finished
);
8216 mdr
->more()->is_ambiguous_auth
= false;
8218 mds
->queue_waiters(finished
);
8219 if (finish_mdr
|| mdr
->aborted
)
8220 mdcache
->request_finish(mdr
);
8222 mdr
->more()->slave_rolling_back
= false;
8225 mdcache
->finish_rollback(mut
->reqid
);
8230 /* This function DOES put the passed message before returning*/
8231 void Server::handle_slave_rename_prep_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*ack
)
8233 dout(10) << "handle_slave_rename_prep_ack " << *mdr
8234 << " witnessed by " << ack
->get_source()
8235 << " " << *ack
<< dendl
;
8236 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
8239 mdr
->more()->slaves
.insert(from
);
8240 if (mdr
->more()->srcdn_auth_mds
== from
&&
8241 mdr
->more()->is_remote_frozen_authpin
&&
8242 !mdr
->more()->is_ambiguous_auth
) {
8243 mdr
->set_ambiguous_auth(mdr
->more()->rename_inode
);
8246 // witnessed? or add extra witnesses?
8247 assert(mdr
->more()->witnessed
.count(from
) == 0);
8248 if (ack
->is_interrupted()) {
8249 dout(10) << " slave request interrupted, noop" << dendl
;
8250 } else if (ack
->witnesses
.empty()) {
8251 mdr
->more()->witnessed
.insert(from
);
8252 if (!ack
->is_not_journaled())
8253 mdr
->more()->has_journaled_slaves
= true;
8255 dout(10) << " extra witnesses (srcdn replicas) are " << ack
->witnesses
<< dendl
;
8256 mdr
->more()->extra_witnesses
.swap(ack
->witnesses
);
8257 mdr
->more()->extra_witnesses
.erase(mds
->get_nodeid()); // not me!
8261 if (ack
->inode_export
.length()) {
8262 dout(10) << " got srci import" << dendl
;
8263 mdr
->more()->inode_import
.claim(ack
->inode_export
);
8264 mdr
->more()->inode_import_v
= ack
->inode_export_v
;
8267 // remove from waiting list
8268 assert(mdr
->more()->waiting_on_slave
.count(from
));
8269 mdr
->more()->waiting_on_slave
.erase(from
);
8271 if (mdr
->more()->waiting_on_slave
.empty())
8272 dispatch_client_request(mdr
); // go again!
8274 dout(10) << "still waiting on slaves " << mdr
->more()->waiting_on_slave
<< dendl
;
8277 void Server::handle_slave_rename_notify_ack(MDRequestRef
& mdr
, MMDSSlaveRequest
*ack
)
8279 dout(10) << "handle_slave_rename_notify_ack " << *mdr
<< " from mds."
8280 << ack
->get_source() << dendl
;
8281 assert(mdr
->is_slave());
8282 mds_rank_t from
= mds_rank_t(ack
->get_source().num());
8284 if (mdr
->more()->waiting_on_slave
.count(from
)) {
8285 mdr
->more()->waiting_on_slave
.erase(from
);
8287 if (mdr
->more()->waiting_on_slave
.empty()) {
8288 if (mdr
->slave_request
)
8289 dispatch_slave_request(mdr
);
8291 dout(10) << " still waiting for rename notify acks from "
8292 << mdr
->more()->waiting_on_slave
<< dendl
;
8296 void Server::_slave_rename_sessions_flushed(MDRequestRef
& mdr
)
8298 dout(10) << "_slave_rename_sessions_flushed " << *mdr
<< dendl
;
8300 if (mdr
->more()->waiting_on_slave
.count(MDS_RANK_NONE
)) {
8301 mdr
->more()->waiting_on_slave
.erase(MDS_RANK_NONE
);
8303 if (mdr
->more()->waiting_on_slave
.empty()) {
8304 if (mdr
->slave_request
)
8305 dispatch_slave_request(mdr
);
8307 dout(10) << " still waiting for rename notify acks from "
8308 << mdr
->more()->waiting_on_slave
<< dendl
;
8313 /* This function takes responsibility for the passed mdr*/
8314 void Server::handle_client_lssnap(MDRequestRef
& mdr
)
8316 MClientRequest
*req
= mdr
->client_request
;
8319 CInode
*diri
= mdcache
->get_inode(req
->get_filepath().get_ino());
8320 if (!diri
|| diri
->state_test(CInode::STATE_PURGING
)) {
8321 respond_to_request(mdr
, -ESTALE
);
8324 if (!diri
->is_auth()) {
8325 mdcache
->request_forward(mdr
, diri
->authority().first
);
8328 if (!diri
->is_dir()) {
8329 respond_to_request(mdr
, -ENOTDIR
);
8332 dout(10) << "lssnap on " << *diri
<< dendl
;
8335 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
8336 mds
->locker
->include_snap_rdlocks(rdlocks
, diri
);
8337 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
8340 if (!check_access(mdr
, diri
, MAY_READ
))
8343 SnapRealm
*realm
= diri
->find_snaprealm();
8344 map
<snapid_t
,SnapInfo
*> infomap
;
8345 realm
->get_snap_info(infomap
, diri
->get_oldest_snap());
8347 unsigned max_entries
= req
->head
.args
.readdir
.max_entries
;
8349 max_entries
= infomap
.size();
8350 int max_bytes
= req
->head
.args
.readdir
.max_bytes
;
8352 // make sure at least one item can be encoded
8353 max_bytes
= (512 << 10) + g_conf
->mds_max_xattr_pairs_size
;
8355 __u64 last_snapid
= 0;
8356 string offset_str
= req
->get_path2();
8357 if (!offset_str
.empty())
8358 last_snapid
= realm
->resolve_snapname(offset_str
, diri
->ino());
8361 encode_empty_dirstat(dirbl
);
8363 max_bytes
-= dirbl
.length() - sizeof(__u32
) + sizeof(__u8
) * 2;
8367 map
<snapid_t
,SnapInfo
*>::iterator p
= infomap
.upper_bound(last_snapid
);
8368 for (; p
!= infomap
.end() && num
< max_entries
; ++p
) {
8369 dout(10) << p
->first
<< " -> " << *p
->second
<< dendl
;
8373 if (p
->second
->ino
== diri
->ino())
8374 snap_name
= p
->second
->name
;
8376 snap_name
= p
->second
->get_long_name();
8378 unsigned start_len
= dnbl
.length();
8379 if (int(start_len
+ snap_name
.length() + sizeof(__u32
) + sizeof(LeaseStat
)) > max_bytes
)
8382 ::encode(snap_name
, dnbl
);
8383 encode_infinite_lease(dnbl
);
8385 int r
= diri
->encode_inodestat(dnbl
, mdr
->session
, realm
, p
->first
, max_bytes
- (int)dnbl
.length());
8388 keep
.substr_of(dnbl
, 0, start_len
);
8395 ::encode(num
, dirbl
);
8397 if (p
== infomap
.end()) {
8398 flags
= CEPH_READDIR_FRAG_END
;
8399 if (last_snapid
== 0)
8400 flags
|= CEPH_READDIR_FRAG_COMPLETE
;
8402 ::encode(flags
, dirbl
);
8403 dirbl
.claim_append(dnbl
);
8405 mdr
->reply_extra_bl
= dirbl
;
8407 respond_to_request(mdr
, 0);
8413 struct C_MDS_mksnap_finish
: public ServerLogContext
{
8416 C_MDS_mksnap_finish(Server
*s
, MDRequestRef
& r
, CInode
*di
, SnapInfo
&i
) :
8417 ServerLogContext(s
, r
), diri(di
), info(i
) {}
8418 void finish(int r
) override
{
8419 server
->_mksnap_finish(mdr
, diri
, info
);
8423 /* This function takes responsibility for the passed mdr*/
8424 void Server::handle_client_mksnap(MDRequestRef
& mdr
)
8426 if (!mds
->mdsmap
->allows_snaps()) {
8427 // you can't make snapshots until you set an option right now
8428 respond_to_request(mdr
, -EPERM
);
8432 MClientRequest
*req
= mdr
->client_request
;
8433 CInode
*diri
= mdcache
->get_inode(req
->get_filepath().get_ino());
8434 if (!diri
|| diri
->state_test(CInode::STATE_PURGING
)) {
8435 respond_to_request(mdr
, -ESTALE
);
8439 if (!diri
->is_auth()) { // fw to auth?
8440 mdcache
->request_forward(mdr
, diri
->authority().first
);
8445 if (!diri
->is_dir()) {
8446 respond_to_request(mdr
, -ENOTDIR
);
8449 if (diri
->is_system() && !diri
->is_root()) {
8450 // no snaps in system dirs (root is ok)
8451 respond_to_request(mdr
, -EPERM
);
8455 const string
&snapname
= req
->get_filepath().last_dentry();
8457 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
) {
8458 dout(20) << "mksnap " << snapname
<< " on " << *diri
<< " denied to uid " << mdr
->client_request
->get_caller_uid() << dendl
;
8459 respond_to_request(mdr
, -EPERM
);
8463 dout(10) << "mksnap " << snapname
<< " on " << *diri
<< dendl
;
8466 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
8468 mds
->locker
->include_snap_rdlocks(rdlocks
, diri
);
8469 rdlocks
.erase(&diri
->snaplock
);
8470 xlocks
.insert(&diri
->snaplock
);
8472 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
8475 if (!check_access(mdr
, diri
, MAY_WRITE
))
8478 // make sure name is unique
8479 if (diri
->snaprealm
&&
8480 diri
->snaprealm
->exists(snapname
)) {
8481 respond_to_request(mdr
, -EEXIST
);
8484 if (snapname
.length() == 0 ||
8485 snapname
[0] == '_') {
8486 respond_to_request(mdr
, -EINVAL
);
8490 // allocate a snapid
8491 if (!mdr
->more()->stid
) {
8493 mds
->snapclient
->prepare_create(diri
->ino(), snapname
,
8494 mdr
->get_mds_stamp(),
8495 &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
8496 new C_MDS_RetryRequest(mdcache
, mdr
));
8500 version_t stid
= mdr
->more()->stid
;
8502 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
8503 ::decode(snapid
, p
);
8504 dout(10) << " stid " << stid
<< " snapid " << snapid
<< dendl
;
8508 info
.ino
= diri
->ino();
8509 info
.snapid
= snapid
;
8510 info
.name
= snapname
;
8511 info
.stamp
= mdr
->get_op_stamp();
8513 inode_t
*pi
= diri
->project_inode();
8514 pi
->ctime
= info
.stamp
;
8515 pi
->version
= diri
->pre_dirty();
8517 // project the snaprealm
8518 sr_t
*newsnap
= diri
->project_snaprealm(snapid
);
8519 newsnap
->snaps
[snapid
] = info
;
8520 newsnap
->seq
= snapid
;
8521 newsnap
->last_created
= snapid
;
8523 // journal the inode changes
8524 mdr
->ls
= mdlog
->get_current_segment();
8525 EUpdate
*le
= new EUpdate(mdlog
, "mksnap");
8526 mdlog
->start_entry(le
);
8528 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
8529 le
->metablob
.add_table_transaction(TABLE_SNAP
, stid
);
8530 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, diri
, 0, PREDIRTY_PRIMARY
, false);
8531 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
8533 // journal the snaprealm changes
8534 submit_mdlog_entry(le
, new C_MDS_mksnap_finish(this, mdr
, diri
, info
),
8539 void Server::_mksnap_finish(MDRequestRef
& mdr
, CInode
*diri
, SnapInfo
&info
)
8541 dout(10) << "_mksnap_finish " << *mdr
<< " " << info
<< dendl
;
8543 int op
= (diri
->snaprealm
? CEPH_SNAP_OP_CREATE
: CEPH_SNAP_OP_SPLIT
);
8545 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
8548 mds
->snapclient
->commit(mdr
->more()->stid
, mdr
->ls
);
8551 dout(10) << "snaprealm now " << *diri
->snaprealm
<< dendl
;
8553 mdcache
->do_realm_invalidate_and_update_notify(diri
, op
);
8557 mdr
->snapid
= info
.snapid
;
8559 respond_to_request(mdr
, 0);
8565 struct C_MDS_rmsnap_finish
: public ServerLogContext
{
8568 C_MDS_rmsnap_finish(Server
*s
, MDRequestRef
& r
, CInode
*di
, snapid_t sn
) :
8569 ServerLogContext(s
, r
), diri(di
), snapid(sn
) {}
8570 void finish(int r
) override
{
8571 server
->_rmsnap_finish(mdr
, diri
, snapid
);
8575 /* This function takes responsibility for the passed mdr*/
8576 void Server::handle_client_rmsnap(MDRequestRef
& mdr
)
8578 MClientRequest
*req
= mdr
->client_request
;
8580 CInode
*diri
= mdcache
->get_inode(req
->get_filepath().get_ino());
8581 if (!diri
|| diri
->state_test(CInode::STATE_PURGING
)) {
8582 respond_to_request(mdr
, -ESTALE
);
8585 if (!diri
->is_auth()) { // fw to auth?
8586 mdcache
->request_forward(mdr
, diri
->authority().first
);
8589 if (!diri
->is_dir()) {
8590 respond_to_request(mdr
, -ENOTDIR
);
8594 const string
&snapname
= req
->get_filepath().last_dentry();
8596 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
) {
8597 dout(20) << "rmsnap " << snapname
<< " on " << *diri
<< " denied to uid " << mdr
->client_request
->get_caller_uid() << dendl
;
8598 respond_to_request(mdr
, -EPERM
);
8602 dout(10) << "rmsnap " << snapname
<< " on " << *diri
<< dendl
;
8605 if (snapname
.length() == 0 || snapname
[0] == '_') {
8606 respond_to_request(mdr
, -EINVAL
); // can't prune a parent snap, currently.
8609 if (!diri
->snaprealm
|| !diri
->snaprealm
->exists(snapname
)) {
8610 respond_to_request(mdr
, -ENOENT
);
8613 snapid_t snapid
= diri
->snaprealm
->resolve_snapname(snapname
, diri
->ino());
8614 dout(10) << " snapname " << snapname
<< " is " << snapid
<< dendl
;
8616 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
8617 mds
->locker
->include_snap_rdlocks(rdlocks
, diri
);
8618 rdlocks
.erase(&diri
->snaplock
);
8619 xlocks
.insert(&diri
->snaplock
);
8621 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
8624 if (!check_access(mdr
, diri
, MAY_WRITE
))
8628 if (!mdr
->more()->stid
) {
8629 mds
->snapclient
->prepare_destroy(diri
->ino(), snapid
,
8630 &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
8631 new C_MDS_RetryRequest(mdcache
, mdr
));
8634 version_t stid
= mdr
->more()->stid
;
8635 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
8638 dout(10) << " stid is " << stid
<< ", seq is " << seq
<< dendl
;
8641 inode_t
*pi
= diri
->project_inode();
8642 pi
->version
= diri
->pre_dirty();
8643 pi
->ctime
= mdr
->get_op_stamp();
8645 mdr
->ls
= mdlog
->get_current_segment();
8646 EUpdate
*le
= new EUpdate(mdlog
, "rmsnap");
8647 mdlog
->start_entry(le
);
8649 // project the snaprealm
8650 sr_t
*newnode
= diri
->project_snaprealm();
8651 newnode
->snaps
.erase(snapid
);
8653 newnode
->last_destroyed
= seq
;
8655 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
8656 le
->metablob
.add_table_transaction(TABLE_SNAP
, stid
);
8657 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, diri
, 0, PREDIRTY_PRIMARY
, false);
8658 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
8660 submit_mdlog_entry(le
, new C_MDS_rmsnap_finish(this, mdr
, diri
, snapid
),
8665 void Server::_rmsnap_finish(MDRequestRef
& mdr
, CInode
*diri
, snapid_t snapid
)
8667 dout(10) << "_rmsnap_finish " << *mdr
<< " " << snapid
<< dendl
;
8668 snapid_t stid
= mdr
->more()->stid
;
8669 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
8673 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
8676 mds
->snapclient
->commit(stid
, mdr
->ls
);
8678 dout(10) << "snaprealm now " << *diri
->snaprealm
<< dendl
;
8680 mdcache
->do_realm_invalidate_and_update_notify(diri
, CEPH_SNAP_OP_DESTROY
);
8684 respond_to_request(mdr
, 0);
8686 // purge snapshot data
8687 if (diri
->snaprealm
->have_past_parents_open())
8688 diri
->purge_stale_snap_data(diri
->snaprealm
->get_snaps());
8691 struct C_MDS_renamesnap_finish
: public ServerLogContext
{
8694 C_MDS_renamesnap_finish(Server
*s
, MDRequestRef
& r
, CInode
*di
, snapid_t sn
) :
8695 ServerLogContext(s
, r
), diri(di
), snapid(sn
) {}
8696 void finish(int r
) override
{
8697 server
->_renamesnap_finish(mdr
, diri
, snapid
);
8701 /* This function takes responsibility for the passed mdr*/
8702 void Server::handle_client_renamesnap(MDRequestRef
& mdr
)
8704 MClientRequest
*req
= mdr
->client_request
;
8705 if (req
->get_filepath().get_ino() != req
->get_filepath2().get_ino()) {
8706 respond_to_request(mdr
, -EINVAL
);
8710 CInode
*diri
= mdcache
->get_inode(req
->get_filepath().get_ino());
8711 if (!diri
|| diri
->state_test(CInode::STATE_PURGING
)) {
8712 respond_to_request(mdr
, -ESTALE
);
8716 if (!diri
->is_auth()) { // fw to auth?
8717 mdcache
->request_forward(mdr
, diri
->authority().first
);
8721 if (!diri
->is_dir()) { // dir only
8722 respond_to_request(mdr
, -ENOTDIR
);
8726 if (mdr
->client_request
->get_caller_uid() < g_conf
->mds_snap_min_uid
||
8727 mdr
->client_request
->get_caller_uid() > g_conf
->mds_snap_max_uid
) {
8728 respond_to_request(mdr
, -EPERM
);
8732 const string
&dstname
= req
->get_filepath().last_dentry();
8733 const string
&srcname
= req
->get_filepath2().last_dentry();
8734 dout(10) << "renamesnap " << srcname
<< "->" << dstname
<< " on " << *diri
<< dendl
;
8736 if (srcname
.length() == 0 || srcname
[0] == '_') {
8737 respond_to_request(mdr
, -EINVAL
); // can't rename a parent snap.
8740 if (!diri
->snaprealm
|| !diri
->snaprealm
->exists(srcname
)) {
8741 respond_to_request(mdr
, -ENOENT
);
8744 if (dstname
.length() == 0 || dstname
[0] == '_') {
8745 respond_to_request(mdr
, -EINVAL
);
8748 if (diri
->snaprealm
->exists(dstname
)) {
8749 respond_to_request(mdr
, -EEXIST
);
8753 snapid_t snapid
= diri
->snaprealm
->resolve_snapname(srcname
, diri
->ino());
8754 dout(10) << " snapname " << srcname
<< " is " << snapid
<< dendl
;
8757 set
<SimpleLock
*> rdlocks
, wrlocks
, xlocks
;
8759 mds
->locker
->include_snap_rdlocks(rdlocks
, diri
);
8760 rdlocks
.erase(&diri
->snaplock
);
8761 xlocks
.insert(&diri
->snaplock
);
8763 if (!mds
->locker
->acquire_locks(mdr
, rdlocks
, wrlocks
, xlocks
))
8766 if (!check_access(mdr
, diri
, MAY_WRITE
))
8770 if (!mdr
->more()->stid
) {
8771 mds
->snapclient
->prepare_update(diri
->ino(), snapid
, dstname
, utime_t(),
8772 &mdr
->more()->stid
, &mdr
->more()->snapidbl
,
8773 new C_MDS_RetryRequest(mdcache
, mdr
));
8777 version_t stid
= mdr
->more()->stid
;
8778 bufferlist::iterator p
= mdr
->more()->snapidbl
.begin();
8781 dout(10) << " stid is " << stid
<< ", seq is " << seq
<< dendl
;
8784 inode_t
*pi
= diri
->project_inode();
8785 pi
->ctime
= mdr
->get_op_stamp();
8786 pi
->version
= diri
->pre_dirty();
8788 // project the snaprealm
8789 sr_t
*newsnap
= diri
->project_snaprealm();
8790 assert(newsnap
->snaps
.count(snapid
));
8791 newsnap
->snaps
[snapid
].name
= dstname
;
8793 // journal the inode changes
8794 mdr
->ls
= mdlog
->get_current_segment();
8795 EUpdate
*le
= new EUpdate(mdlog
, "renamesnap");
8796 mdlog
->start_entry(le
);
8798 le
->metablob
.add_client_req(req
->get_reqid(), req
->get_oldest_client_tid());
8799 le
->metablob
.add_table_transaction(TABLE_SNAP
, stid
);
8800 mdcache
->predirty_journal_parents(mdr
, &le
->metablob
, diri
, 0, PREDIRTY_PRIMARY
, false);
8801 mdcache
->journal_dirty_inode(mdr
.get(), &le
->metablob
, diri
);
8803 // journal the snaprealm changes
8804 submit_mdlog_entry(le
, new C_MDS_renamesnap_finish(this, mdr
, diri
, snapid
),
8809 void Server::_renamesnap_finish(MDRequestRef
& mdr
, CInode
*diri
, snapid_t snapid
)
8811 dout(10) << "_renamesnap_finish " << *mdr
<< " " << snapid
<< dendl
;
8813 diri
->pop_and_dirty_projected_inode(mdr
->ls
);
8816 mds
->snapclient
->commit(mdr
->more()->stid
, mdr
->ls
);
8818 dout(10) << "snaprealm now " << *diri
->snaprealm
<< dendl
;
8820 mdcache
->do_realm_invalidate_and_update_notify(diri
, CEPH_SNAP_OP_UPDATE
, true);
8825 mdr
->snapid
= snapid
;
8826 respond_to_request(mdr
, 0);
8830 * Return true if server is in state RECONNECT and this
8831 * client has not yet reconnected.
8833 bool Server::waiting_for_reconnect(client_t c
) const
8835 return client_reconnect_gather
.count(c
) > 0;
8838 void Server::dump_reconnect_status(Formatter
*f
) const
8840 f
->open_object_section("reconnect_status");
8841 f
->dump_stream("client_reconnect_gather") << client_reconnect_gather
;