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Diffstat (limited to 'src/mds/Mutation.cc')
| -rw-r--r-- | src/mds/Mutation.cc | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/src/mds/Mutation.cc b/src/mds/Mutation.cc new file mode 100644 index 00000000..ee1978e5 --- /dev/null +++ b/src/mds/Mutation.cc @@ -0,0 +1,473 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net> + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + +#include "Mutation.h" +#include "ScatterLock.h" +#include "CDir.h" + +// MutationImpl + +void MutationImpl::pin(MDSCacheObject *o) +{ + if (pins.count(o) == 0) { + o->get(MDSCacheObject::PIN_REQUEST); + pins.insert(o); + } +} + +void MutationImpl::unpin(MDSCacheObject *o) +{ + ceph_assert(pins.count(o)); + o->put(MDSCacheObject::PIN_REQUEST); + pins.erase(o); +} + +void MutationImpl::set_stickydirs(CInode *in) +{ + if (!stickydiri || stickydiri != in) { + in->get_stickydirs(); + if (stickydiri) + stickydiri->put_stickydirs(); + stickydiri = in; + } +} + +void MutationImpl::put_stickydirs() +{ + if (stickydiri) { + stickydiri->put_stickydirs(); + stickydiri = nullptr; + + } +} + +void MutationImpl::drop_pins() +{ + for (auto& o : pins) + o->put(MDSCacheObject::PIN_REQUEST); + pins.clear(); +} + +void MutationImpl::start_locking(SimpleLock *lock, int target) +{ + ceph_assert(locking == NULL); + pin(lock->get_parent()); + locking = lock; + locking_target_mds = target; +} + +void MutationImpl::finish_locking(SimpleLock *lock) +{ + ceph_assert(locking == lock); + locking = NULL; + locking_target_mds = -1; +} + +void MutationImpl::LockOpVec::erase_rdlock(SimpleLock* lock) +{ + for (int i = size() - 1; i >= 0; --i) { + auto& op = (*this)[i]; + if (op.lock == lock && op.is_rdlock()) { + erase(begin() + i); + return; + } + } +} + +void MutationImpl::LockOpVec::sort_and_merge() +{ + std::sort(begin(), end(), SimpleLock::ptr_lt()); + // merge ops on the same lock + for (auto i = end() - 1; i > begin(); ) { + auto j = i; + while (--j >= begin()) { + if (i->lock != j->lock) + break; + } + if (i - j == 1) { + i = j; + continue; + } + + // merge + ++j; + for (auto k = i; k > j; --k) { + if (k->is_remote_wrlock()) { + ceph_assert(!j->is_remote_wrlock()); + j->wrlock_target = k->wrlock_target; + } + j->flags |= k->flags; + } + if (j->is_xlock()) { + // xlock overwrites other types + ceph_assert(!j->is_remote_wrlock()); + j->flags = MutationImpl::LockOp::XLOCK; + } + erase(j + 1, i + 1); + i = j - 1; + } +} + +// auth pins +bool MutationImpl::is_auth_pinned(MDSCacheObject *object) const +{ + return auth_pins.count(object) || remote_auth_pins.count(object); +} + +void MutationImpl::auth_pin(MDSCacheObject *object) +{ + if (!is_auth_pinned(object)) { + object->auth_pin(this); + auth_pins.insert(object); + } +} + +void MutationImpl::auth_unpin(MDSCacheObject *object) +{ + ceph_assert(auth_pins.count(object)); + object->auth_unpin(this); + auth_pins.erase(object); +} + +void MutationImpl::drop_local_auth_pins() +{ + for (const auto& p : auth_pins) { + ceph_assert(p->is_auth()); + p->auth_unpin(this); + } + auth_pins.clear(); +} + +void MutationImpl::add_projected_inode(CInode *in) +{ + projected_inodes.push_back(in); +} + +void MutationImpl::pop_and_dirty_projected_inodes() +{ + while (!projected_inodes.empty()) { + CInode *in = projected_inodes.front(); + projected_inodes.pop_front(); + in->pop_and_dirty_projected_inode(ls); + } +} + +void MutationImpl::add_projected_fnode(CDir *dir) +{ + projected_fnodes.push_back(dir); +} + +void MutationImpl::pop_and_dirty_projected_fnodes() +{ + while (!projected_fnodes.empty()) { + CDir *dir = projected_fnodes.front(); + projected_fnodes.pop_front(); + dir->pop_and_dirty_projected_fnode(ls); + } +} + +void MutationImpl::add_updated_lock(ScatterLock *lock) +{ + updated_locks.push_back(lock); +} + +void MutationImpl::add_cow_inode(CInode *in) +{ + pin(in); + dirty_cow_inodes.push_back(in); +} + +void MutationImpl::add_cow_dentry(CDentry *dn) +{ + pin(dn); + dirty_cow_dentries.push_back(pair<CDentry*,version_t>(dn, dn->get_projected_version())); +} + +void MutationImpl::apply() +{ + pop_and_dirty_projected_inodes(); + pop_and_dirty_projected_fnodes(); + + for (list<CInode*>::iterator p = dirty_cow_inodes.begin(); + p != dirty_cow_inodes.end(); + ++p) + (*p)->_mark_dirty(ls); + for (list<pair<CDentry*,version_t> >::iterator p = dirty_cow_dentries.begin(); + p != dirty_cow_dentries.end(); + ++p) + p->first->mark_dirty(p->second, ls); + + for (list<ScatterLock*>::iterator p = updated_locks.begin(); + p != updated_locks.end(); + ++p) + (*p)->mark_dirty(); +} + +void MutationImpl::cleanup() +{ + drop_local_auth_pins(); + drop_pins(); +} + +void MutationImpl::_dump_op_descriptor_unlocked(ostream& stream) const +{ + stream << "Mutation"; +} + +// MDRequestImpl + +MDRequestImpl::~MDRequestImpl() +{ + delete _more; +} + +MDRequestImpl::More* MDRequestImpl::more() +{ + if (!_more) + _more = new More(); + return _more; +} + +bool MDRequestImpl::has_more() const +{ + return _more != nullptr; +} + +bool MDRequestImpl::has_witnesses() +{ + return (_more != nullptr) && (!_more->witnessed.empty()); +} + +bool MDRequestImpl::slave_did_prepare() +{ + return has_more() && more()->slave_commit; +} + +bool MDRequestImpl::slave_rolling_back() +{ + return has_more() && more()->slave_rolling_back; +} + +bool MDRequestImpl::did_ino_allocation() const +{ + return alloc_ino || used_prealloc_ino || prealloc_inos.size(); +} + +bool MDRequestImpl::freeze_auth_pin(CInode *inode) +{ + ceph_assert(!more()->rename_inode || more()->rename_inode == inode); + more()->rename_inode = inode; + more()->is_freeze_authpin = true; + auth_pin(inode); + if (!inode->freeze_inode(1)) { + return false; + } + inode->freeze_auth_pin(); + inode->unfreeze_inode(); + return true; +} + +void MDRequestImpl::unfreeze_auth_pin(bool clear_inode) +{ + ceph_assert(more()->is_freeze_authpin); + CInode *inode = more()->rename_inode; + if (inode->is_frozen_auth_pin()) + inode->unfreeze_auth_pin(); + else + inode->unfreeze_inode(); + more()->is_freeze_authpin = false; + if (clear_inode) + more()->rename_inode = NULL; +} + +void MDRequestImpl::set_remote_frozen_auth_pin(CInode *inode) +{ + more()->rename_inode = inode; + more()->is_remote_frozen_authpin = true; +} + +void MDRequestImpl::set_ambiguous_auth(CInode *inode) +{ + ceph_assert(!more()->rename_inode || more()->rename_inode == inode); + ceph_assert(!more()->is_ambiguous_auth); + + inode->set_ambiguous_auth(); + more()->rename_inode = inode; + more()->is_ambiguous_auth = true; +} + +void MDRequestImpl::clear_ambiguous_auth() +{ + CInode *inode = more()->rename_inode; + ceph_assert(inode && more()->is_ambiguous_auth); + inode->clear_ambiguous_auth(); + more()->is_ambiguous_auth = false; +} + +bool MDRequestImpl::can_auth_pin(MDSCacheObject *object) +{ + return object->can_auth_pin() || + (is_auth_pinned(object) && has_more() && + more()->is_freeze_authpin && + more()->rename_inode == object); +} + +void MDRequestImpl::drop_local_auth_pins() +{ + if (has_more() && more()->is_freeze_authpin) + unfreeze_auth_pin(true); + MutationImpl::drop_local_auth_pins(); +} + +const filepath& MDRequestImpl::get_filepath() +{ + if (client_request) + return client_request->get_filepath(); + return more()->filepath1; +} + +const filepath& MDRequestImpl::get_filepath2() +{ + if (client_request) + return client_request->get_filepath2(); + return more()->filepath2; +} + +void MDRequestImpl::set_filepath(const filepath& fp) +{ + ceph_assert(!client_request); + more()->filepath1 = fp; +} + +void MDRequestImpl::set_filepath2(const filepath& fp) +{ + ceph_assert(!client_request); + more()->filepath2 = fp; +} + +bool MDRequestImpl::is_queued_for_replay() const +{ + return client_request ? client_request->is_queued_for_replay() : false; +} + +MClientRequest::const_ref MDRequestImpl::release_client_request() +{ + msg_lock.lock(); + MClientRequest::const_ref req; + req.swap(client_request); + client_request = req; + msg_lock.unlock(); + return req; +} + +void MDRequestImpl::reset_slave_request(const MMDSSlaveRequest::const_ref& req) +{ + msg_lock.lock(); + MMDSSlaveRequest::const_ref old; + old.swap(slave_request); + slave_request = req; + msg_lock.unlock(); + old.reset(); +} + +void MDRequestImpl::print(ostream &out) const +{ + out << "request(" << reqid; + //if (request) out << " " << *request; + if (is_slave()) out << " slave_to mds." << slave_to_mds; + if (client_request) out << " cr=" << client_request; + if (slave_request) out << " sr=" << slave_request; + out << ")"; +} + +void MDRequestImpl::dump(Formatter *f) const +{ + _dump(f); +} + +void MDRequestImpl::_dump(Formatter *f) const +{ + f->dump_string("flag_point", state_string()); + f->dump_stream("reqid") << reqid; + { + msg_lock.lock(); + auto _client_request = client_request; + auto _slave_request =slave_request; + msg_lock.unlock(); + + if (_client_request) { + f->dump_string("op_type", "client_request"); + f->open_object_section("client_info"); + f->dump_stream("client") << _client_request->get_orig_source(); + f->dump_int("tid", _client_request->get_tid()); + f->close_section(); // client_info + } else if (is_slave() && _slave_request) { // replies go to an existing mdr + f->dump_string("op_type", "slave_request"); + f->open_object_section("master_info"); + f->dump_stream("master") << _slave_request->get_orig_source(); + f->close_section(); // master_info + + f->open_object_section("request_info"); + f->dump_int("attempt", _slave_request->get_attempt()); + f->dump_string("op_type", + MMDSSlaveRequest::get_opname(_slave_request->get_op())); + f->dump_int("lock_type", _slave_request->get_lock_type()); + f->dump_stream("object_info") << _slave_request->get_object_info(); + f->dump_stream("srcdnpath") << _slave_request->srcdnpath; + f->dump_stream("destdnpath") << _slave_request->destdnpath; + f->dump_stream("witnesses") << _slave_request->witnesses; + f->dump_bool("has_inode_export", + _slave_request->inode_export_v != 0); + f->dump_int("inode_export_v", _slave_request->inode_export_v); + f->dump_stream("op_stamp") << _slave_request->op_stamp; + f->close_section(); // request_info + } + else if (internal_op != -1) { // internal request + f->dump_string("op_type", "internal_op"); + f->dump_int("internal_op", internal_op); + f->dump_string("op_name", ceph_mds_op_name(internal_op)); + } + else { + f->dump_string("op_type", "no_available_op_found"); + } + } + { + f->open_array_section("events"); + std::lock_guard l(lock); + for (auto& i : events) { + f->dump_object("event", i); + } + f->close_section(); // events + } +} + +void MDRequestImpl::_dump_op_descriptor_unlocked(ostream& stream) const +{ + msg_lock.lock(); + auto _client_request = client_request; + auto _slave_request = slave_request; + msg_lock.unlock(); + + if (_client_request) { + _client_request->print(stream); + } else if (_slave_request) { + _slave_request->print(stream); + } else if (internal_op >= 0) { + stream << "internal op " << ceph_mds_op_name(internal_op) << ":" << reqid; + } else { + // drat, it's triggered by a slave request, but we don't have a message + // FIXME + stream << "rejoin:" << reqid; + } +} |