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Objecter.cc
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// -*- 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 <[email protected]>
*
* 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 "Objecter.h"
#include "osd/OSDMap.h"
#include "Filer.h"
#include "mon/MonClient.h"
#include "msg/Messenger.h"
#include "msg/Message.h"
#include "messages/MPing.h"
#include "messages/MOSDOp.h"
#include "messages/MOSDOpReply.h"
#include "messages/MOSDBackoff.h"
#include "messages/MOSDMap.h"
#include "messages/MPoolOp.h"
#include "messages/MPoolOpReply.h"
#include "messages/MGetPoolStats.h"
#include "messages/MGetPoolStatsReply.h"
#include "messages/MStatfs.h"
#include "messages/MStatfsReply.h"
#include "messages/MMonCommand.h"
#include "messages/MCommand.h"
#include "messages/MCommandReply.h"
#include "messages/MWatchNotify.h"
#include <errno.h>
#include "common/config.h"
#include "common/perf_counters.h"
#include "common/scrub_types.h"
#include "include/str_list.h"
#include "common/errno.h"
#include "common/EventTrace.h"
using ceph::real_time;
using ceph::real_clock;
using ceph::mono_clock;
using ceph::mono_time;
using ceph::timespan;
#define dout_subsys ceph_subsys_objecter
#undef dout_prefix
#define dout_prefix *_dout << messenger->get_myname() << ".objecter "
enum {
l_osdc_first = 123200,
l_osdc_op_active,
l_osdc_op_laggy,
l_osdc_op_send,
l_osdc_op_send_bytes,
l_osdc_op_resend,
l_osdc_op_reply,
l_osdc_op,
l_osdc_op_r,
l_osdc_op_w,
l_osdc_op_rmw,
l_osdc_op_pg,
l_osdc_osdop_stat,
l_osdc_osdop_create,
l_osdc_osdop_read,
l_osdc_osdop_write,
l_osdc_osdop_writefull,
l_osdc_osdop_writesame,
l_osdc_osdop_append,
l_osdc_osdop_zero,
l_osdc_osdop_truncate,
l_osdc_osdop_delete,
l_osdc_osdop_mapext,
l_osdc_osdop_sparse_read,
l_osdc_osdop_clonerange,
l_osdc_osdop_getxattr,
l_osdc_osdop_setxattr,
l_osdc_osdop_cmpxattr,
l_osdc_osdop_rmxattr,
l_osdc_osdop_resetxattrs,
l_osdc_osdop_tmap_up,
l_osdc_osdop_tmap_put,
l_osdc_osdop_tmap_get,
l_osdc_osdop_call,
l_osdc_osdop_watch,
l_osdc_osdop_notify,
l_osdc_osdop_src_cmpxattr,
l_osdc_osdop_pgls,
l_osdc_osdop_pgls_filter,
l_osdc_osdop_other,
l_osdc_linger_active,
l_osdc_linger_send,
l_osdc_linger_resend,
l_osdc_linger_ping,
l_osdc_poolop_active,
l_osdc_poolop_send,
l_osdc_poolop_resend,
l_osdc_poolstat_active,
l_osdc_poolstat_send,
l_osdc_poolstat_resend,
l_osdc_statfs_active,
l_osdc_statfs_send,
l_osdc_statfs_resend,
l_osdc_command_active,
l_osdc_command_send,
l_osdc_command_resend,
l_osdc_map_epoch,
l_osdc_map_full,
l_osdc_map_inc,
l_osdc_osd_sessions,
l_osdc_osd_session_open,
l_osdc_osd_session_close,
l_osdc_osd_laggy,
l_osdc_osdop_omap_wr,
l_osdc_osdop_omap_rd,
l_osdc_osdop_omap_del,
l_osdc_last,
};
// config obs ----------------------------
static const char *config_keys[] = {
"crush_location",
NULL
};
class Objecter::RequestStateHook : public AdminSocketHook {
Objecter *m_objecter;
public:
explicit RequestStateHook(Objecter *objecter);
bool call(std::string_view command, const cmdmap_t& cmdmap,
std::string_view format, bufferlist& out) override;
};
/**
* This is a more limited form of C_Contexts, but that requires
* a ceph_context which we don't have here.
*/
class ObjectOperation::C_TwoContexts : public Context {
Context *first;
Context *second;
public:
C_TwoContexts(Context *first, Context *second) :
first(first), second(second) {}
void finish(int r) override {
first->complete(r);
second->complete(r);
first = NULL;
second = NULL;
}
~C_TwoContexts() override {
delete first;
delete second;
}
};
void ObjectOperation::add_handler(Context *extra) {
size_t last = out_handler.size() - 1;
Context *orig = out_handler[last];
if (orig) {
Context *wrapper = new C_TwoContexts(orig, extra);
out_handler[last] = wrapper;
} else {
out_handler[last] = extra;
}
}
Objecter::OSDSession::unique_completion_lock Objecter::OSDSession::get_lock(
object_t& oid)
{
if (oid.name.empty())
return unique_completion_lock();
static constexpr uint32_t HASH_PRIME = 1021;
uint32_t h = ceph_str_hash_linux(oid.name.c_str(), oid.name.size())
% HASH_PRIME;
return unique_completion_lock(completion_locks[h % num_locks],
std::defer_lock);
}
const char** Objecter::get_tracked_conf_keys() const
{
return config_keys;
}
void Objecter::handle_conf_change(const struct md_config_t *conf,
const std::set <std::string> &changed)
{
if (changed.count("crush_location")) {
update_crush_location();
}
}
void Objecter::update_crush_location()
{
unique_lock wl(rwlock);
crush_location = cct->crush_location.get_location();
}
// messages ------------------------------
/*
* initialize only internal data structures, don't initiate cluster interaction
*/
void Objecter::init()
{
assert(!initialized);
if (!logger) {
PerfCountersBuilder pcb(cct, "objecter", l_osdc_first, l_osdc_last);
pcb.add_u64(l_osdc_op_active, "op_active", "Operations active", "actv",
PerfCountersBuilder::PRIO_CRITICAL);
pcb.add_u64(l_osdc_op_laggy, "op_laggy", "Laggy operations");
pcb.add_u64_counter(l_osdc_op_send, "op_send", "Sent operations");
pcb.add_u64_counter(l_osdc_op_send_bytes, "op_send_bytes", "Sent data", NULL, 0, unit_t(BYTES));
pcb.add_u64_counter(l_osdc_op_resend, "op_resend", "Resent operations");
pcb.add_u64_counter(l_osdc_op_reply, "op_reply", "Operation reply");
pcb.add_u64_counter(l_osdc_op, "op", "Operations");
pcb.add_u64_counter(l_osdc_op_r, "op_r", "Read operations", "rd",
PerfCountersBuilder::PRIO_CRITICAL);
pcb.add_u64_counter(l_osdc_op_w, "op_w", "Write operations", "wr",
PerfCountersBuilder::PRIO_CRITICAL);
pcb.add_u64_counter(l_osdc_op_rmw, "op_rmw", "Read-modify-write operations",
"rdwr", PerfCountersBuilder::PRIO_INTERESTING);
pcb.add_u64_counter(l_osdc_op_pg, "op_pg", "PG operation");
pcb.add_u64_counter(l_osdc_osdop_stat, "osdop_stat", "Stat operations");
pcb.add_u64_counter(l_osdc_osdop_create, "osdop_create",
"Create object operations");
pcb.add_u64_counter(l_osdc_osdop_read, "osdop_read", "Read operations");
pcb.add_u64_counter(l_osdc_osdop_write, "osdop_write", "Write operations");
pcb.add_u64_counter(l_osdc_osdop_writefull, "osdop_writefull",
"Write full object operations");
pcb.add_u64_counter(l_osdc_osdop_writesame, "osdop_writesame",
"Write same operations");
pcb.add_u64_counter(l_osdc_osdop_append, "osdop_append",
"Append operation");
pcb.add_u64_counter(l_osdc_osdop_zero, "osdop_zero",
"Set object to zero operations");
pcb.add_u64_counter(l_osdc_osdop_truncate, "osdop_truncate",
"Truncate object operations");
pcb.add_u64_counter(l_osdc_osdop_delete, "osdop_delete",
"Delete object operations");
pcb.add_u64_counter(l_osdc_osdop_mapext, "osdop_mapext",
"Map extent operations");
pcb.add_u64_counter(l_osdc_osdop_sparse_read, "osdop_sparse_read",
"Sparse read operations");
pcb.add_u64_counter(l_osdc_osdop_clonerange, "osdop_clonerange",
"Clone range operations");
pcb.add_u64_counter(l_osdc_osdop_getxattr, "osdop_getxattr",
"Get xattr operations");
pcb.add_u64_counter(l_osdc_osdop_setxattr, "osdop_setxattr",
"Set xattr operations");
pcb.add_u64_counter(l_osdc_osdop_cmpxattr, "osdop_cmpxattr",
"Xattr comparison operations");
pcb.add_u64_counter(l_osdc_osdop_rmxattr, "osdop_rmxattr",
"Remove xattr operations");
pcb.add_u64_counter(l_osdc_osdop_resetxattrs, "osdop_resetxattrs",
"Reset xattr operations");
pcb.add_u64_counter(l_osdc_osdop_tmap_up, "osdop_tmap_up",
"TMAP update operations");
pcb.add_u64_counter(l_osdc_osdop_tmap_put, "osdop_tmap_put",
"TMAP put operations");
pcb.add_u64_counter(l_osdc_osdop_tmap_get, "osdop_tmap_get",
"TMAP get operations");
pcb.add_u64_counter(l_osdc_osdop_call, "osdop_call",
"Call (execute) operations");
pcb.add_u64_counter(l_osdc_osdop_watch, "osdop_watch",
"Watch by object operations");
pcb.add_u64_counter(l_osdc_osdop_notify, "osdop_notify",
"Notify about object operations");
pcb.add_u64_counter(l_osdc_osdop_src_cmpxattr, "osdop_src_cmpxattr",
"Extended attribute comparison in multi operations");
pcb.add_u64_counter(l_osdc_osdop_pgls, "osdop_pgls");
pcb.add_u64_counter(l_osdc_osdop_pgls_filter, "osdop_pgls_filter");
pcb.add_u64_counter(l_osdc_osdop_other, "osdop_other", "Other operations");
pcb.add_u64(l_osdc_linger_active, "linger_active",
"Active lingering operations");
pcb.add_u64_counter(l_osdc_linger_send, "linger_send",
"Sent lingering operations");
pcb.add_u64_counter(l_osdc_linger_resend, "linger_resend",
"Resent lingering operations");
pcb.add_u64_counter(l_osdc_linger_ping, "linger_ping",
"Sent pings to lingering operations");
pcb.add_u64(l_osdc_poolop_active, "poolop_active",
"Active pool operations");
pcb.add_u64_counter(l_osdc_poolop_send, "poolop_send",
"Sent pool operations");
pcb.add_u64_counter(l_osdc_poolop_resend, "poolop_resend",
"Resent pool operations");
pcb.add_u64(l_osdc_poolstat_active, "poolstat_active",
"Active get pool stat operations");
pcb.add_u64_counter(l_osdc_poolstat_send, "poolstat_send",
"Pool stat operations sent");
pcb.add_u64_counter(l_osdc_poolstat_resend, "poolstat_resend",
"Resent pool stats");
pcb.add_u64(l_osdc_statfs_active, "statfs_active", "Statfs operations");
pcb.add_u64_counter(l_osdc_statfs_send, "statfs_send", "Sent FS stats");
pcb.add_u64_counter(l_osdc_statfs_resend, "statfs_resend",
"Resent FS stats");
pcb.add_u64(l_osdc_command_active, "command_active", "Active commands");
pcb.add_u64_counter(l_osdc_command_send, "command_send",
"Sent commands");
pcb.add_u64_counter(l_osdc_command_resend, "command_resend",
"Resent commands");
pcb.add_u64(l_osdc_map_epoch, "map_epoch", "OSD map epoch");
pcb.add_u64_counter(l_osdc_map_full, "map_full",
"Full OSD maps received");
pcb.add_u64_counter(l_osdc_map_inc, "map_inc",
"Incremental OSD maps received");
pcb.add_u64(l_osdc_osd_sessions, "osd_sessions",
"Open sessions"); // open sessions
pcb.add_u64_counter(l_osdc_osd_session_open, "osd_session_open",
"Sessions opened");
pcb.add_u64_counter(l_osdc_osd_session_close, "osd_session_close",
"Sessions closed");
pcb.add_u64(l_osdc_osd_laggy, "osd_laggy", "Laggy OSD sessions");
pcb.add_u64_counter(l_osdc_osdop_omap_wr, "omap_wr",
"OSD OMAP write operations");
pcb.add_u64_counter(l_osdc_osdop_omap_rd, "omap_rd",
"OSD OMAP read operations");
pcb.add_u64_counter(l_osdc_osdop_omap_del, "omap_del",
"OSD OMAP delete operations");
logger = pcb.create_perf_counters();
cct->get_perfcounters_collection()->add(logger);
}
m_request_state_hook = new RequestStateHook(this);
AdminSocket* admin_socket = cct->get_admin_socket();
int ret = admin_socket->register_command("objecter_requests",
"objecter_requests",
m_request_state_hook,
"show in-progress osd requests");
/* Don't warn on EEXIST, happens if multiple ceph clients
* are instantiated from one process */
if (ret < 0 && ret != -EEXIST) {
lderr(cct) << "error registering admin socket command: "
<< cpp_strerror(ret) << dendl;
}
update_crush_location();
cct->_conf->add_observer(this);
initialized = true;
}
/*
* ok, cluster interaction can happen
*/
void Objecter::start(const OSDMap* o)
{
shared_lock rl(rwlock);
start_tick();
if (o) {
osdmap->deepish_copy_from(*o);
} else if (osdmap->get_epoch() == 0) {
_maybe_request_map();
}
}
void Objecter::shutdown()
{
assert(initialized);
unique_lock wl(rwlock);
initialized = false;
cct->_conf->remove_observer(this);
map<int,OSDSession*>::iterator p;
while (!osd_sessions.empty()) {
p = osd_sessions.begin();
close_session(p->second);
}
while(!check_latest_map_lingers.empty()) {
map<uint64_t, LingerOp*>::iterator i = check_latest_map_lingers.begin();
i->second->put();
check_latest_map_lingers.erase(i->first);
}
while(!check_latest_map_ops.empty()) {
map<ceph_tid_t, Op*>::iterator i = check_latest_map_ops.begin();
i->second->put();
check_latest_map_ops.erase(i->first);
}
while(!check_latest_map_commands.empty()) {
map<ceph_tid_t, CommandOp*>::iterator i
= check_latest_map_commands.begin();
i->second->put();
check_latest_map_commands.erase(i->first);
}
while(!poolstat_ops.empty()) {
map<ceph_tid_t,PoolStatOp*>::iterator i = poolstat_ops.begin();
delete i->second;
poolstat_ops.erase(i->first);
}
while(!statfs_ops.empty()) {
map<ceph_tid_t, StatfsOp*>::iterator i = statfs_ops.begin();
delete i->second;
statfs_ops.erase(i->first);
}
while(!pool_ops.empty()) {
map<ceph_tid_t, PoolOp*>::iterator i = pool_ops.begin();
delete i->second;
pool_ops.erase(i->first);
}
ldout(cct, 20) << __func__ << " clearing up homeless session..." << dendl;
while(!homeless_session->linger_ops.empty()) {
std::map<uint64_t, LingerOp*>::iterator i
= homeless_session->linger_ops.begin();
ldout(cct, 10) << " linger_op " << i->first << dendl;
LingerOp *lop = i->second;
{
OSDSession::unique_lock swl(homeless_session->lock);
_session_linger_op_remove(homeless_session, lop);
}
linger_ops.erase(lop->linger_id);
linger_ops_set.erase(lop);
lop->put();
}
while(!homeless_session->ops.empty()) {
std::map<ceph_tid_t, Op*>::iterator i = homeless_session->ops.begin();
ldout(cct, 10) << " op " << i->first << dendl;
Op *op = i->second;
{
OSDSession::unique_lock swl(homeless_session->lock);
_session_op_remove(homeless_session, op);
}
op->put();
}
while(!homeless_session->command_ops.empty()) {
std::map<ceph_tid_t, CommandOp*>::iterator i
= homeless_session->command_ops.begin();
ldout(cct, 10) << " command_op " << i->first << dendl;
CommandOp *cop = i->second;
{
OSDSession::unique_lock swl(homeless_session->lock);
_session_command_op_remove(homeless_session, cop);
}
cop->put();
}
if (tick_event) {
if (timer.cancel_event(tick_event)) {
ldout(cct, 10) << " successfully canceled tick" << dendl;
}
tick_event = 0;
}
if (logger) {
cct->get_perfcounters_collection()->remove(logger);
delete logger;
logger = NULL;
}
// Let go of Objecter write lock so timer thread can shutdown
wl.unlock();
// Outside of lock to avoid cycle WRT calls to RequestStateHook
// This is safe because we guarantee no concurrent calls to
// shutdown() with the ::initialized check at start.
if (m_request_state_hook) {
AdminSocket* admin_socket = cct->get_admin_socket();
admin_socket->unregister_command("objecter_requests");
delete m_request_state_hook;
m_request_state_hook = NULL;
}
}
void Objecter::_send_linger(LingerOp *info,
shunique_lock& sul)
{
assert(sul.owns_lock() && sul.mutex() == &rwlock);
vector<OSDOp> opv;
Context *oncommit = NULL;
LingerOp::shared_lock watchl(info->watch_lock);
bufferlist *poutbl = NULL;
if (info->registered && info->is_watch) {
ldout(cct, 15) << "send_linger " << info->linger_id << " reconnect"
<< dendl;
opv.push_back(OSDOp());
opv.back().op.op = CEPH_OSD_OP_WATCH;
opv.back().op.watch.cookie = info->get_cookie();
opv.back().op.watch.op = CEPH_OSD_WATCH_OP_RECONNECT;
opv.back().op.watch.gen = ++info->register_gen;
oncommit = new C_Linger_Reconnect(this, info);
} else {
ldout(cct, 15) << "send_linger " << info->linger_id << " register"
<< dendl;
opv = info->ops;
C_Linger_Commit *c = new C_Linger_Commit(this, info);
if (!info->is_watch) {
info->notify_id = 0;
poutbl = &c->outbl;
}
oncommit = c;
}
watchl.unlock();
Op *o = new Op(info->target.base_oid, info->target.base_oloc,
opv, info->target.flags | CEPH_OSD_FLAG_READ,
oncommit, info->pobjver);
o->outbl = poutbl;
o->snapid = info->snap;
o->snapc = info->snapc;
o->mtime = info->mtime;
o->target = info->target;
o->tid = ++last_tid;
// do not resend this; we will send a new op to reregister
o->should_resend = false;
o->ctx_budgeted = true;
if (info->register_tid) {
// repeat send. cancel old registration op, if any.
OSDSession::unique_lock sl(info->session->lock);
if (info->session->ops.count(info->register_tid)) {
Op *o = info->session->ops[info->register_tid];
_op_cancel_map_check(o);
_cancel_linger_op(o);
}
sl.unlock();
}
_op_submit_with_budget(o, sul, &info->register_tid, &info->ctx_budget);
logger->inc(l_osdc_linger_send);
}
void Objecter::_linger_commit(LingerOp *info, int r, bufferlist& outbl)
{
LingerOp::unique_lock wl(info->watch_lock);
ldout(cct, 10) << "_linger_commit " << info->linger_id << dendl;
if (info->on_reg_commit) {
info->on_reg_commit->complete(r);
info->on_reg_commit = NULL;
}
if (r < 0 && info->on_notify_finish) {
info->on_notify_finish->complete(r);
info->on_notify_finish = nullptr;
}
// only tell the user the first time we do this
info->registered = true;
info->pobjver = NULL;
if (!info->is_watch) {
// make note of the notify_id
auto p = outbl.cbegin();
try {
decode(info->notify_id, p);
ldout(cct, 10) << "_linger_commit notify_id=" << info->notify_id
<< dendl;
}
catch (buffer::error& e) {
}
}
}
struct C_DoWatchError : public Context {
Objecter *objecter;
Objecter::LingerOp *info;
int err;
C_DoWatchError(Objecter *o, Objecter::LingerOp *i, int r)
: objecter(o), info(i), err(r) {
info->get();
info->_queued_async();
}
void finish(int r) override {
Objecter::unique_lock wl(objecter->rwlock);
bool canceled = info->canceled;
wl.unlock();
if (!canceled) {
info->watch_context->handle_error(info->get_cookie(), err);
}
info->finished_async();
info->put();
}
};
int Objecter::_normalize_watch_error(int r)
{
// translate ENOENT -> ENOTCONN so that a delete->disconnection
// notification and a failure to reconnect because we raced with
// the delete appear the same to the user.
if (r == -ENOENT)
r = -ENOTCONN;
return r;
}
void Objecter::_linger_reconnect(LingerOp *info, int r)
{
ldout(cct, 10) << __func__ << " " << info->linger_id << " = " << r
<< " (last_error " << info->last_error << ")" << dendl;
if (r < 0) {
LingerOp::unique_lock wl(info->watch_lock);
if (!info->last_error) {
r = _normalize_watch_error(r);
info->last_error = r;
if (info->watch_context) {
finisher->queue(new C_DoWatchError(this, info, r));
}
}
wl.unlock();
}
}
void Objecter::_send_linger_ping(LingerOp *info)
{
// rwlock is locked unique
// info->session->lock is locked
if (cct->_conf->objecter_inject_no_watch_ping) {
ldout(cct, 10) << __func__ << " " << info->linger_id << " SKIPPING"
<< dendl;
return;
}
if (osdmap->test_flag(CEPH_OSDMAP_PAUSERD)) {
ldout(cct, 10) << __func__ << " PAUSERD" << dendl;
return;
}
ceph::coarse_mono_time now = ceph::coarse_mono_clock::now();
ldout(cct, 10) << __func__ << " " << info->linger_id << " now " << now
<< dendl;
vector<OSDOp> opv(1);
opv[0].op.op = CEPH_OSD_OP_WATCH;
opv[0].op.watch.cookie = info->get_cookie();
opv[0].op.watch.op = CEPH_OSD_WATCH_OP_PING;
opv[0].op.watch.gen = info->register_gen;
C_Linger_Ping *onack = new C_Linger_Ping(this, info);
Op *o = new Op(info->target.base_oid, info->target.base_oloc,
opv, info->target.flags | CEPH_OSD_FLAG_READ,
onack, NULL, NULL);
o->target = info->target;
o->should_resend = false;
_send_op_account(o);
o->tid = ++last_tid;
_session_op_assign(info->session, o);
_send_op(o);
info->ping_tid = o->tid;
onack->sent = now;
logger->inc(l_osdc_linger_ping);
}
void Objecter::_linger_ping(LingerOp *info, int r, ceph::coarse_mono_time sent,
uint32_t register_gen)
{
LingerOp::unique_lock l(info->watch_lock);
ldout(cct, 10) << __func__ << " " << info->linger_id
<< " sent " << sent << " gen " << register_gen << " = " << r
<< " (last_error " << info->last_error
<< " register_gen " << info->register_gen << ")" << dendl;
if (info->register_gen == register_gen) {
if (r == 0) {
info->watch_valid_thru = sent;
} else if (r < 0 && !info->last_error) {
r = _normalize_watch_error(r);
info->last_error = r;
if (info->watch_context) {
finisher->queue(new C_DoWatchError(this, info, r));
}
}
} else {
ldout(cct, 20) << " ignoring old gen" << dendl;
}
}
int Objecter::linger_check(LingerOp *info)
{
LingerOp::shared_lock l(info->watch_lock);
ceph::coarse_mono_time stamp = info->watch_valid_thru;
if (!info->watch_pending_async.empty())
stamp = std::min(info->watch_valid_thru, info->watch_pending_async.front());
auto age = ceph::coarse_mono_clock::now() - stamp;
ldout(cct, 10) << __func__ << " " << info->linger_id
<< " err " << info->last_error
<< " age " << age << dendl;
if (info->last_error)
return info->last_error;
// return a safe upper bound (we are truncating to ms)
return
1 + std::chrono::duration_cast<std::chrono::milliseconds>(age).count();
}
void Objecter::linger_cancel(LingerOp *info)
{
unique_lock wl(rwlock);
_linger_cancel(info);
info->put();
}
void Objecter::_linger_cancel(LingerOp *info)
{
// rwlock is locked unique
ldout(cct, 20) << __func__ << " linger_id=" << info->linger_id << dendl;
if (!info->canceled) {
OSDSession *s = info->session;
OSDSession::unique_lock sl(s->lock);
_session_linger_op_remove(s, info);
sl.unlock();
linger_ops.erase(info->linger_id);
linger_ops_set.erase(info);
assert(linger_ops.size() == linger_ops_set.size());
info->canceled = true;
info->put();
logger->dec(l_osdc_linger_active);
}
}
Objecter::LingerOp *Objecter::linger_register(const object_t& oid,
const object_locator_t& oloc,
int flags)
{
LingerOp *info = new LingerOp(this);
info->target.base_oid = oid;
info->target.base_oloc = oloc;
if (info->target.base_oloc.key == oid)
info->target.base_oloc.key.clear();
info->target.flags = flags;
info->watch_valid_thru = ceph::coarse_mono_clock::now();
unique_lock l(rwlock);
// Acquire linger ID
info->linger_id = ++max_linger_id;
ldout(cct, 10) << __func__ << " info " << info
<< " linger_id " << info->linger_id
<< " cookie " << info->get_cookie()
<< dendl;
linger_ops[info->linger_id] = info;
linger_ops_set.insert(info);
assert(linger_ops.size() == linger_ops_set.size());
info->get(); // for the caller
return info;
}
ceph_tid_t Objecter::linger_watch(LingerOp *info,
ObjectOperation& op,
const SnapContext& snapc,
real_time mtime,
bufferlist& inbl,
Context *oncommit,
version_t *objver)
{
info->is_watch = true;
info->snapc = snapc;
info->mtime = mtime;
info->target.flags |= CEPH_OSD_FLAG_WRITE;
info->ops = op.ops;
info->inbl = inbl;
info->poutbl = NULL;
info->pobjver = objver;
info->on_reg_commit = oncommit;
info->ctx_budget = take_linger_budget(info);
shunique_lock sul(rwlock, ceph::acquire_unique);
_linger_submit(info, sul);
logger->inc(l_osdc_linger_active);
return info->linger_id;
}
ceph_tid_t Objecter::linger_notify(LingerOp *info,
ObjectOperation& op,
snapid_t snap, bufferlist& inbl,
bufferlist *poutbl,
Context *onfinish,
version_t *objver)
{
info->snap = snap;
info->target.flags |= CEPH_OSD_FLAG_READ;
info->ops = op.ops;
info->inbl = inbl;
info->poutbl = poutbl;
info->pobjver = objver;
info->on_reg_commit = onfinish;
info->ctx_budget = take_linger_budget(info);
shunique_lock sul(rwlock, ceph::acquire_unique);
_linger_submit(info, sul);
logger->inc(l_osdc_linger_active);
return info->linger_id;
}
void Objecter::_linger_submit(LingerOp *info, shunique_lock& sul)
{
assert(sul.owns_lock() && sul.mutex() == &rwlock);
assert(info->linger_id);
assert(info->ctx_budget != -1); // caller needs to have taken budget already!
// Populate Op::target
OSDSession *s = NULL;
_calc_target(&info->target, nullptr);
// Create LingerOp<->OSDSession relation
int r = _get_session(info->target.osd, &s, sul);
assert(r == 0);
OSDSession::unique_lock sl(s->lock);
_session_linger_op_assign(s, info);
sl.unlock();
put_session(s);
_send_linger(info, sul);
}
struct C_DoWatchNotify : public Context {
Objecter *objecter;
Objecter::LingerOp *info;
MWatchNotify *msg;
C_DoWatchNotify(Objecter *o, Objecter::LingerOp *i, MWatchNotify *m)
: objecter(o), info(i), msg(m) {
info->get();
info->_queued_async();
msg->get();
}
void finish(int r) override {
objecter->_do_watch_notify(info, msg);
}
};
void Objecter::handle_watch_notify(MWatchNotify *m)
{
shared_lock l(rwlock);
if (!initialized) {
return;
}
LingerOp *info = reinterpret_cast<LingerOp*>(m->cookie);
if (linger_ops_set.count(info) == 0) {
ldout(cct, 7) << __func__ << " cookie " << m->cookie << " dne" << dendl;
return;
}
LingerOp::unique_lock wl(info->watch_lock);
if (m->opcode == CEPH_WATCH_EVENT_DISCONNECT) {
if (!info->last_error) {
info->last_error = -ENOTCONN;
if (info->watch_context) {
finisher->queue(new C_DoWatchError(this, info, -ENOTCONN));
}
}
} else if (!info->is_watch) {
// we have CEPH_WATCH_EVENT_NOTIFY_COMPLETE; we can do this inline
// since we know the only user (librados) is safe to call in
// fast-dispatch context
if (info->notify_id &&
info->notify_id != m->notify_id) {
ldout(cct, 10) << __func__ << " reply notify " << m->notify_id
<< " != " << info->notify_id << ", ignoring" << dendl;
} else if (info->on_notify_finish) {
info->notify_result_bl->claim(m->get_data());
info->on_notify_finish->complete(m->return_code);
// if we race with reconnect we might get a second notify; only
// notify the caller once!
info->on_notify_finish = NULL;
}
} else {
finisher->queue(new C_DoWatchNotify(this, info, m));
}
}
void Objecter::_do_watch_notify(LingerOp *info, MWatchNotify *m)
{
ldout(cct, 10) << __func__ << " " << *m << dendl;
shared_lock l(rwlock);
assert(initialized);
if (info->canceled) {
l.unlock();
goto out;
}
// notify completion?
assert(info->is_watch);
assert(info->watch_context);
assert(m->opcode != CEPH_WATCH_EVENT_DISCONNECT);
l.unlock();
switch (m->opcode) {
case CEPH_WATCH_EVENT_NOTIFY:
info->watch_context->handle_notify(m->notify_id, m->cookie,
m->notifier_gid, m->bl);
break;
}
out:
info->finished_async();
info->put();
m->put();
}
bool Objecter::ms_dispatch(Message *m)
{
ldout(cct, 10) << __func__ << " " << cct << " " << *m << dendl;
switch (m->get_type()) {
// these we exlusively handle
case CEPH_MSG_OSD_OPREPLY:
handle_osd_op_reply(static_cast<MOSDOpReply*>(m));
return true;
case CEPH_MSG_OSD_BACKOFF:
handle_osd_backoff(static_cast<MOSDBackoff*>(m));
return true;
case CEPH_MSG_WATCH_NOTIFY:
handle_watch_notify(static_cast<MWatchNotify*>(m));
m->put();
return true;
case MSG_COMMAND_REPLY:
if (m->get_source().type() == CEPH_ENTITY_TYPE_OSD) {
handle_command_reply(static_cast<MCommandReply*>(m));
return true;
} else {
return false;
}
case MSG_GETPOOLSTATSREPLY:
handle_get_pool_stats_reply(static_cast<MGetPoolStatsReply*>(m));
return true;
case CEPH_MSG_POOLOP_REPLY:
handle_pool_op_reply(static_cast<MPoolOpReply*>(m));
return true;