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ReplicatedPG.cc
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ReplicatedPG.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 <sage@newdream.net>
* Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com>
*
* Author: Loic Dachary <loic@dachary.org>
*
* 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 "boost/tuple/tuple.hpp"
#include "PG.h"
#include "ReplicatedPG.h"
#include "OSD.h"
#include "OpRequest.h"
#include "ScrubStore.h"
#include "objclass/objclass.h"
#include "common/errno.h"
#include "common/scrub_types.h"
#include "common/perf_counters.h"
#include "messages/MOSDOp.h"
#include "messages/MOSDOpReply.h"
#include "messages/MOSDSubOp.h"
#include "messages/MOSDSubOpReply.h"
#include "messages/MOSDRepOp.h"
#include "messages/MOSDRepOpReply.h"
#include "messages/MOSDPGNotify.h"
#include "messages/MOSDPGInfo.h"
#include "messages/MOSDPGRemove.h"
#include "messages/MOSDPGTrim.h"
#include "messages/MOSDPGScan.h"
#include "messages/MOSDPGBackfill.h"
#include "messages/MOSDPing.h"
#include "messages/MWatchNotify.h"
#include "messages/MOSDPGPush.h"
#include "messages/MOSDPGPull.h"
#include "messages/MOSDPGPushReply.h"
#include "messages/MOSDPGUpdateLogMissing.h"
#include "messages/MOSDPGUpdateLogMissingReply.h"
#include "messages/MCommandReply.h"
#include "Watch.h"
#include "mds/inode_backtrace.h" // Ugh
#include "common/config.h"
#include "include/compat.h"
#include "common/cmdparse.h"
#include "mon/MonClient.h"
#include "osdc/Objecter.h"
#include "json_spirit/json_spirit_value.h"
#include "json_spirit/json_spirit_reader.h"
#include "include/assert.h" // json_spirit clobbers it
#include "include/rados/rados_types.hpp"
#ifdef WITH_LTTNG
#include "tracing/osd.h"
#else
#define tracepoint(...)
#endif
#define dout_subsys ceph_subsys_osd
#define DOUT_PREFIX_ARGS this, osd->whoami, get_osdmap()
#undef dout_prefix
#define dout_prefix _prefix(_dout, this)
template <typename T>
static ostream& _prefix(std::ostream *_dout, T *pg) {
return *_dout << pg->gen_prefix();
}
#include <sstream>
#include <utility>
#include <errno.h>
PGLSFilter::PGLSFilter()
{
}
PGLSFilter::~PGLSFilter()
{
}
struct OnReadComplete : public Context {
ReplicatedPG *pg;
ReplicatedPG::OpContext *opcontext;
OnReadComplete(
ReplicatedPG *pg,
ReplicatedPG::OpContext *ctx) : pg(pg), opcontext(ctx) {}
void finish(int r) {
if (r < 0)
opcontext->async_read_result = r;
opcontext->finish_read(pg);
}
~OnReadComplete() {}
};
// OpContext
void ReplicatedPG::OpContext::start_async_reads(ReplicatedPG *pg)
{
inflightreads = 1;
pg->pgbackend->objects_read_async(
obc->obs.oi.soid,
pending_async_reads,
new OnReadComplete(pg, this), pg->get_pool().fast_read);
pending_async_reads.clear();
}
void ReplicatedPG::OpContext::finish_read(ReplicatedPG *pg)
{
assert(inflightreads > 0);
--inflightreads;
if (async_reads_complete()) {
assert(pg->in_progress_async_reads.size());
assert(pg->in_progress_async_reads.front().second == this);
pg->in_progress_async_reads.pop_front();
pg->complete_read_ctx(async_read_result, this);
}
}
class CopyFromCallback: public ReplicatedPG::CopyCallback {
public:
ReplicatedPG::CopyResults *results;
int retval;
ReplicatedPG::OpContext *ctx;
explicit CopyFromCallback(ReplicatedPG::OpContext *ctx_)
: results(NULL),
retval(0),
ctx(ctx_) {}
~CopyFromCallback() {}
virtual void finish(ReplicatedPG::CopyCallbackResults results_) {
results = results_.get<1>();
int r = results_.get<0>();
retval = r;
// for finish_copyfrom
ctx->user_at_version = results->user_version;
if (r >= 0) {
ctx->pg->execute_ctx(ctx);
}
ctx->copy_cb = NULL;
if (r < 0) {
if (r != -ECANCELED) { // on cancel just toss it out; client resends
if (ctx->op)
ctx->pg->osd->reply_op_error(ctx->op, r);
} else if (results->should_requeue) {
if (ctx->op)
ctx->pg->requeue_op(ctx->op);
}
ctx->pg->close_op_ctx(ctx);
}
}
bool is_temp_obj_used() {
return results->started_temp_obj;
}
uint64_t get_data_size() {
return results->object_size;
}
int get_result() {
return retval;
}
};
// ======================
// PGBackend::Listener
void ReplicatedPG::on_local_recover(
const hobject_t &hoid,
const ObjectRecoveryInfo &_recovery_info,
ObjectContextRef obc,
ObjectStore::Transaction *t
)
{
dout(10) << __func__ << ": " << hoid << dendl;
ObjectRecoveryInfo recovery_info(_recovery_info);
clear_object_snap_mapping(t, hoid);
if (recovery_info.soid.snap < CEPH_NOSNAP) {
assert(recovery_info.oi.snaps.size());
OSDriver::OSTransaction _t(osdriver.get_transaction(t));
set<snapid_t> snaps(
recovery_info.oi.snaps.begin(),
recovery_info.oi.snaps.end());
snap_mapper.add_oid(
recovery_info.soid,
snaps,
&_t);
}
if (pg_log.get_missing().is_missing(recovery_info.soid) &&
pg_log.get_missing().missing.find(recovery_info.soid)->second.need > recovery_info.version) {
assert(is_primary());
const pg_log_entry_t *latest = pg_log.get_log().objects.find(recovery_info.soid)->second;
if (latest->op == pg_log_entry_t::LOST_REVERT &&
latest->reverting_to == recovery_info.version) {
dout(10) << " got old revert version " << recovery_info.version
<< " for " << *latest << dendl;
recovery_info.version = latest->version;
// update the attr to the revert event version
recovery_info.oi.prior_version = recovery_info.oi.version;
recovery_info.oi.version = latest->version;
bufferlist bl;
::encode(recovery_info.oi, bl);
assert(!pool.info.require_rollback());
t->setattr(coll, ghobject_t(recovery_info.soid), OI_ATTR, bl);
if (obc)
obc->attr_cache[OI_ATTR] = bl;
}
}
// keep track of active pushes for scrub
++active_pushes;
recover_got(recovery_info.soid, recovery_info.version);
if (is_primary()) {
assert(obc);
obc->obs.exists = true;
obc->ondisk_write_lock();
bool got = obc->get_recovery_read();
assert(got);
assert(recovering.count(obc->obs.oi.soid));
recovering[obc->obs.oi.soid] = obc;
obc->obs.oi = recovery_info.oi; // may have been updated above
t->register_on_applied(new C_OSD_AppliedRecoveredObject(this, obc));
t->register_on_applied_sync(new C_OSD_OndiskWriteUnlock(obc));
publish_stats_to_osd();
assert(missing_loc.needs_recovery(hoid));
missing_loc.add_location(hoid, pg_whoami);
if (!is_unreadable_object(hoid) &&
waiting_for_unreadable_object.count(hoid)) {
dout(20) << " kicking unreadable waiters on " << hoid << dendl;
requeue_ops(waiting_for_unreadable_object[hoid]);
waiting_for_unreadable_object.erase(hoid);
}
if (pg_log.get_missing().missing.size() == 0) {
requeue_ops(waiting_for_all_missing);
waiting_for_all_missing.clear();
}
} else {
t->register_on_applied(
new C_OSD_AppliedRecoveredObjectReplica(this));
}
t->register_on_commit(
new C_OSD_CommittedPushedObject(
this,
get_osdmap()->get_epoch(),
info.last_complete));
// update pg
dirty_info = true;
write_if_dirty(*t);
}
void ReplicatedPG::on_global_recover(
const hobject_t &soid,
const object_stat_sum_t &stat_diff)
{
info.stats.stats.sum.add(stat_diff);
missing_loc.recovered(soid);
publish_stats_to_osd();
dout(10) << "pushed " << soid << " to all replicas" << dendl;
map<hobject_t, ObjectContextRef, hobject_t::BitwiseComparator>::iterator i = recovering.find(soid);
assert(i != recovering.end());
// recover missing won't have had an obc, but it gets filled in
// during on_local_recover
assert(i->second);
list<OpRequestRef> requeue_list;
i->second->drop_recovery_read(&requeue_list);
requeue_ops(requeue_list);
if (backfills_in_flight.count(soid))
backfills_in_flight.erase(soid);
recovering.erase(i);
finish_recovery_op(soid);
if (waiting_for_degraded_object.count(soid)) {
dout(20) << " kicking degraded waiters on " << soid << dendl;
requeue_ops(waiting_for_degraded_object[soid]);
waiting_for_degraded_object.erase(soid);
}
if (waiting_for_unreadable_object.count(soid)) {
dout(20) << " kicking unreadable waiters on " << soid << dendl;
requeue_ops(waiting_for_unreadable_object[soid]);
waiting_for_unreadable_object.erase(soid);
}
finish_degraded_object(soid);
}
void ReplicatedPG::on_peer_recover(
pg_shard_t peer,
const hobject_t &soid,
const ObjectRecoveryInfo &recovery_info,
const object_stat_sum_t &stat)
{
info.stats.stats.sum.add(stat);
publish_stats_to_osd();
// done!
peer_missing[peer].got(soid, recovery_info.version);
}
void ReplicatedPG::begin_peer_recover(
pg_shard_t peer,
const hobject_t soid)
{
peer_missing[peer].revise_have(soid, eversion_t());
}
void ReplicatedPG::schedule_recovery_work(
GenContext<ThreadPool::TPHandle&> *c)
{
osd->recovery_gen_wq.queue(c);
}
void ReplicatedPG::send_message_osd_cluster(
int peer, Message *m, epoch_t from_epoch)
{
osd->send_message_osd_cluster(peer, m, from_epoch);
}
void ReplicatedPG::send_message_osd_cluster(
Message *m, Connection *con)
{
osd->send_message_osd_cluster(m, con);
}
void ReplicatedPG::send_message_osd_cluster(
Message *m, const ConnectionRef& con)
{
osd->send_message_osd_cluster(m, con);
}
ConnectionRef ReplicatedPG::get_con_osd_cluster(
int peer, epoch_t from_epoch)
{
return osd->get_con_osd_cluster(peer, from_epoch);
}
PerfCounters *ReplicatedPG::get_logger()
{
return osd->logger;
}
// ====================
// missing objects
bool ReplicatedPG::is_missing_object(const hobject_t& soid) const
{
return pg_log.get_missing().missing.count(soid);
}
void ReplicatedPG::maybe_kick_recovery(
const hobject_t &soid)
{
eversion_t v;
if (!missing_loc.needs_recovery(soid, &v))
return;
map<hobject_t, ObjectContextRef, hobject_t::BitwiseComparator>::const_iterator p = recovering.find(soid);
if (p != recovering.end()) {
dout(7) << "object " << soid << " v " << v << ", already recovering." << dendl;
} else if (missing_loc.is_unfound(soid)) {
dout(7) << "object " << soid << " v " << v << ", is unfound." << dendl;
} else {
dout(7) << "object " << soid << " v " << v << ", recovering." << dendl;
PGBackend::RecoveryHandle *h = pgbackend->open_recovery_op();
h->cache_dont_need = false;
if (is_missing_object(soid)) {
recover_missing(soid, v, cct->_conf->osd_client_op_priority, h);
} else {
prep_object_replica_pushes(soid, v, h);
}
pgbackend->run_recovery_op(h, cct->_conf->osd_client_op_priority);
}
}
void ReplicatedPG::wait_for_unreadable_object(
const hobject_t& soid, OpRequestRef op)
{
assert(is_unreadable_object(soid));
maybe_kick_recovery(soid);
waiting_for_unreadable_object[soid].push_back(op);
op->mark_delayed("waiting for missing object");
}
void ReplicatedPG::wait_for_all_missing(OpRequestRef op)
{
waiting_for_all_missing.push_back(op);
op->mark_delayed("waiting for all missing");
}
bool ReplicatedPG::is_degraded_or_backfilling_object(const hobject_t& soid)
{
/* The conditions below may clear (on_local_recover, before we queue
* the tranasction) before we actually requeue the degraded waiters
* in on_global_recover after the transaction completes.
*/
if (waiting_for_degraded_object.count(soid))
return true;
if (pg_log.get_missing().missing.count(soid))
return true;
assert(!actingbackfill.empty());
for (set<pg_shard_t>::iterator i = actingbackfill.begin();
i != actingbackfill.end();
++i) {
if (*i == get_primary()) continue;
pg_shard_t peer = *i;
if (peer_missing.count(peer) &&
peer_missing[peer].missing.count(soid))
return true;
// Object is degraded if after last_backfill AND
// we are backfilling it
if (is_backfill_targets(peer) &&
cmp(peer_info[peer].last_backfill, soid, get_sort_bitwise()) <= 0 &&
cmp(last_backfill_started, soid, get_sort_bitwise()) >= 0 &&
backfills_in_flight.count(soid))
return true;
}
return false;
}
void ReplicatedPG::wait_for_degraded_object(const hobject_t& soid, OpRequestRef op)
{
assert(is_degraded_or_backfilling_object(soid));
maybe_kick_recovery(soid);
waiting_for_degraded_object[soid].push_back(op);
op->mark_delayed("waiting for degraded object");
}
void ReplicatedPG::block_write_on_full_cache(
const hobject_t& _oid, OpRequestRef op)
{
const hobject_t oid = _oid.get_head();
dout(20) << __func__ << ": blocking object " << oid
<< " on full cache" << dendl;
objects_blocked_on_cache_full.insert(oid);
waiting_for_cache_not_full.push_back(op);
}
void ReplicatedPG::block_write_on_snap_rollback(
const hobject_t& oid, ObjectContextRef obc, OpRequestRef op)
{
dout(20) << __func__ << ": blocking object " << oid.get_head()
<< " on snap promotion " << obc->obs.oi.soid << dendl;
// otherwise, we'd have blocked in do_op
assert(oid.is_head());
assert(objects_blocked_on_snap_promotion.count(oid) == 0);
objects_blocked_on_snap_promotion[oid] = obc;
wait_for_blocked_object(obc->obs.oi.soid, op);
}
void ReplicatedPG::block_write_on_degraded_snap(
const hobject_t& snap, OpRequestRef op)
{
dout(20) << __func__ << ": blocking object " << snap.get_head()
<< " on degraded snap " << snap << dendl;
// otherwise, we'd have blocked in do_op
assert(objects_blocked_on_degraded_snap.count(snap.get_head()) == 0);
objects_blocked_on_degraded_snap[snap.get_head()] = snap.snap;
wait_for_degraded_object(snap, op);
}
bool ReplicatedPG::maybe_await_blocked_snapset(
const hobject_t &hoid,
OpRequestRef op)
{
ObjectContextRef obc;
obc = object_contexts.lookup(hoid.get_head());
if (obc) {
if (obc->is_blocked()) {
wait_for_blocked_object(obc->obs.oi.soid, op);
return true;
} else {
return false;
}
}
obc = object_contexts.lookup(hoid.get_snapdir());
if (obc) {
if (obc->is_blocked()) {
wait_for_blocked_object(obc->obs.oi.soid, op);
return true;
} else {
return false;
}
}
return false;
}
void ReplicatedPG::wait_for_blocked_object(const hobject_t& soid, OpRequestRef op)
{
dout(10) << __func__ << " " << soid << " " << op << dendl;
waiting_for_blocked_object[soid].push_back(op);
op->mark_delayed("waiting for blocked object");
}
class PGLSPlainFilter : public PGLSFilter {
string val;
public:
virtual int init(bufferlist::iterator ¶ms)
{
try {
::decode(xattr, params);
::decode(val, params);
} catch (buffer::error &e) {
return -EINVAL;
}
return 0;
}
virtual ~PGLSPlainFilter() {}
virtual bool filter(const hobject_t &obj, bufferlist& xattr_data,
bufferlist& outdata);
};
class PGLSParentFilter : public PGLSFilter {
inodeno_t parent_ino;
public:
PGLSParentFilter() {
xattr = "_parent";
}
virtual int init(bufferlist::iterator ¶ms)
{
try {
::decode(parent_ino, params);
} catch (buffer::error &e) {
return -EINVAL;
}
generic_dout(0) << "parent_ino=" << parent_ino << dendl;
return 0;
}
virtual ~PGLSParentFilter() {}
virtual bool filter(const hobject_t &obj, bufferlist& xattr_data,
bufferlist& outdata);
};
bool PGLSParentFilter::filter(const hobject_t &obj,
bufferlist& xattr_data, bufferlist& outdata)
{
bufferlist::iterator iter = xattr_data.begin();
inode_backtrace_t bt;
generic_dout(0) << "PGLSParentFilter::filter" << dendl;
::decode(bt, iter);
vector<inode_backpointer_t>::iterator vi;
for (vi = bt.ancestors.begin(); vi != bt.ancestors.end(); ++vi) {
generic_dout(0) << "vi->dirino=" << vi->dirino << " parent_ino=" << parent_ino << dendl;
if ( vi->dirino == parent_ino) {
::encode(*vi, outdata);
return true;
}
}
return false;
}
bool PGLSPlainFilter::filter(const hobject_t &obj,
bufferlist& xattr_data, bufferlist& outdata)
{
if (val.size() != xattr_data.length())
return false;
if (memcmp(val.c_str(), xattr_data.c_str(), val.size()))
return false;
return true;
}
bool ReplicatedPG::pgls_filter(PGLSFilter *filter, hobject_t& sobj, bufferlist& outdata)
{
bufferlist bl;
// If filter has expressed an interest in an xattr, load it.
if (!filter->get_xattr().empty()) {
int ret = pgbackend->objects_get_attr(
sobj,
filter->get_xattr(),
&bl);
dout(0) << "getattr (sobj=" << sobj << ", attr=" << filter->get_xattr() << ") returned " << ret << dendl;
if (ret < 0) {
if (ret != -ENODATA || filter->reject_empty_xattr()) {
return false;
}
}
}
return filter->filter(sobj, bl, outdata);
}
int ReplicatedPG::get_pgls_filter(bufferlist::iterator& iter, PGLSFilter **pfilter)
{
string type;
PGLSFilter *filter;
try {
::decode(type, iter);
}
catch (buffer::error& e) {
return -EINVAL;
}
if (type.compare("parent") == 0) {
filter = new PGLSParentFilter();
} else if (type.compare("plain") == 0) {
filter = new PGLSPlainFilter();
} else {
std::size_t dot = type.find(".");
if (dot == std::string::npos || dot == 0 || dot == type.size() - 1) {
return -EINVAL;
}
const std::string class_name = type.substr(0, dot);
const std::string filter_name = type.substr(dot + 1);
ClassHandler::ClassData *cls = NULL;
int r = osd->class_handler->open_class(class_name, &cls);
if (r != 0) {
derr << "Error opening class '" << class_name << "': "
<< cpp_strerror(r) << dendl;
return -EINVAL;
} else {
assert(cls);
}
ClassHandler::ClassFilter *class_filter = cls->get_filter(filter_name);
if (class_filter == NULL) {
derr << "Error finding filter '" << filter_name << "' in class "
<< class_name << dendl;
return -EINVAL;
}
filter = class_filter->fn();
if (!filter) {
// Object classes are obliged to return us something, but let's
// give an error rather than asserting out.
derr << "Buggy class " << class_name << " failed to construct "
"filter " << filter_name << dendl;
return -EINVAL;
}
}
assert(filter);
int r = filter->init(iter);
if (r < 0) {
derr << "Error initializing filter " << type << ": "
<< cpp_strerror(r) << dendl;
delete filter;
return -EINVAL;
} else {
// Successfully constructed and initialized, return it.
*pfilter = filter;
return 0;
}
}
// ==========================================================
int ReplicatedPG::do_command(
cmdmap_t cmdmap,
ostream& ss,
bufferlist& idata,
bufferlist& odata,
ConnectionRef con,
ceph_tid_t tid)
{
const pg_missing_t &missing = pg_log.get_missing();
string prefix;
string format;
cmd_getval(cct, cmdmap, "format", format);
boost::scoped_ptr<Formatter> f(Formatter::create(format, "json-pretty", "json"));
string command;
cmd_getval(cct, cmdmap, "cmd", command);
if (command == "query") {
f->open_object_section("pg");
f->dump_string("state", pg_state_string(get_state()));
f->dump_stream("snap_trimq") << snap_trimq;
f->dump_unsigned("epoch", get_osdmap()->get_epoch());
f->open_array_section("up");
for (vector<int>::iterator p = up.begin(); p != up.end(); ++p)
f->dump_unsigned("osd", *p);
f->close_section();
f->open_array_section("acting");
for (vector<int>::iterator p = acting.begin(); p != acting.end(); ++p)
f->dump_unsigned("osd", *p);
f->close_section();
if (!backfill_targets.empty()) {
f->open_array_section("backfill_targets");
for (set<pg_shard_t>::iterator p = backfill_targets.begin();
p != backfill_targets.end();
++p)
f->dump_stream("shard") << *p;
f->close_section();
}
if (!actingbackfill.empty()) {
f->open_array_section("actingbackfill");
for (set<pg_shard_t>::iterator p = actingbackfill.begin();
p != actingbackfill.end();
++p)
f->dump_stream("shard") << *p;
f->close_section();
}
f->open_object_section("info");
_update_calc_stats();
info.dump(f.get());
f->close_section();
f->open_array_section("peer_info");
for (map<pg_shard_t, pg_info_t>::iterator p = peer_info.begin();
p != peer_info.end();
++p) {
f->open_object_section("info");
f->dump_stream("peer") << p->first;
p->second.dump(f.get());
f->close_section();
}
f->close_section();
f->open_array_section("recovery_state");
handle_query_state(f.get());
f->close_section();
f->open_object_section("agent_state");
if (agent_state)
agent_state->dump(f.get());
f->close_section();
f->close_section();
f->flush(odata);
return 0;
}
else if (command == "mark_unfound_lost") {
string mulcmd;
cmd_getval(cct, cmdmap, "mulcmd", mulcmd);
int mode = -1;
if (mulcmd == "revert") {
if (pool.info.ec_pool()) {
ss << "mode must be 'delete' for ec pool";
return -EINVAL;
}
mode = pg_log_entry_t::LOST_REVERT;
} else if (mulcmd == "delete") {
mode = pg_log_entry_t::LOST_DELETE;
} else {
ss << "mode must be 'revert' or 'delete'; mark not yet implemented";
return -EINVAL;
}
assert(mode == pg_log_entry_t::LOST_REVERT ||
mode == pg_log_entry_t::LOST_DELETE);
if (!is_primary()) {
ss << "not primary";
return -EROFS;
}
int unfound = missing_loc.num_unfound();
if (!unfound) {
ss << "pg has no unfound objects";
return 0; // make command idempotent
}
if (!all_unfound_are_queried_or_lost(get_osdmap())) {
ss << "pg has " << unfound
<< " unfound objects but we haven't probed all sources, not marking lost";
return -EINVAL;
}
mark_all_unfound_lost(mode, con, tid);
return -EAGAIN;
}
else if (command == "list_missing") {
hobject_t offset;
string offset_json;
if (cmd_getval(cct, cmdmap, "offset", offset_json)) {
json_spirit::Value v;
try {
if (!json_spirit::read(offset_json, v))
throw std::runtime_error("bad json");
offset.decode(v);
} catch (std::runtime_error& e) {
ss << "error parsing offset: " << e.what();
return -EINVAL;
}
}
f->open_object_section("missing");
{
f->open_object_section("offset");
offset.dump(f.get());
f->close_section();
}
f->dump_int("num_missing", missing.num_missing());
f->dump_int("num_unfound", get_num_unfound());
const map<hobject_t, pg_missing_t::item, hobject_t::BitwiseComparator> &needs_recovery_map =
missing_loc.get_needs_recovery();
map<hobject_t, pg_missing_t::item, hobject_t::BitwiseComparator>::const_iterator p =
needs_recovery_map.upper_bound(offset);
{
f->open_array_section("objects");
int32_t num = 0;
bufferlist bl;
for (; p != needs_recovery_map.end() && num < cct->_conf->osd_command_max_records; ++p) {
if (missing_loc.is_unfound(p->first)) {
f->open_object_section("object");
{
f->open_object_section("oid");
p->first.dump(f.get());
f->close_section();
}
p->second.dump(f.get()); // have, need keys
{
f->open_array_section("locations");
for (set<pg_shard_t>::iterator r =
missing_loc.get_locations(p->first).begin();
r != missing_loc.get_locations(p->first).end();
++r)
f->dump_stream("shard") << *r;
f->close_section();
}
f->close_section();
num++;
}
}
f->close_section();
}
f->dump_int("more", p != needs_recovery_map.end());
f->close_section();
f->flush(odata);
return 0;
}
ss << "unknown pg command " << prefix;
return -EINVAL;
}
// ==========================================================
bool ReplicatedPG::pg_op_must_wait(MOSDOp *op)
{
if (pg_log.get_missing().missing.empty())
return false;
for (vector<OSDOp>::iterator p = op->ops.begin(); p != op->ops.end(); ++p) {
if (p->op.op == CEPH_OSD_OP_PGLS || p->op.op == CEPH_OSD_OP_PGNLS ||
p->op.op == CEPH_OSD_OP_PGLS_FILTER || p->op.op == CEPH_OSD_OP_PGNLS_FILTER) {
if (op->get_snapid() != CEPH_NOSNAP) {
return true;
}
}
}
return false;
}
void ReplicatedPG::do_pg_op(OpRequestRef op)
{
MOSDOp *m = static_cast<MOSDOp *>(op->get_req());
assert(m->get_type() == CEPH_MSG_OSD_OP);
dout(10) << "do_pg_op " << *m << dendl;
op->mark_started();
int result = 0;
string cname, mname;
PGLSFilter *filter = NULL;
bufferlist filter_out;
snapid_t snapid = m->get_snapid();
vector<OSDOp> ops = m->ops;
for (vector<OSDOp>::iterator p = ops.begin(); p != ops.end(); ++p) {
OSDOp& osd_op = *p;
bufferlist::iterator bp = p->indata.begin();
switch (p->op.op) {
case CEPH_OSD_OP_PGNLS_FILTER:
try {
::decode(cname, bp);
::decode(mname, bp);
}
catch (const buffer::error& e) {
dout(0) << "unable to decode PGLS_FILTER description in " << *m << dendl;
result = -EINVAL;
break;
}
if (filter) {
delete filter;
filter = NULL;
}
result = get_pgls_filter(bp, &filter);
if (result < 0)
break;
assert(filter);
// fall through
case CEPH_OSD_OP_PGNLS:
if (get_osdmap()->raw_pg_to_pg(m->get_pg()) != info.pgid.pgid) {
dout(10) << " pgnls pg=" << m->get_pg()
<< " " << get_osdmap()->raw_pg_to_pg(m->get_pg())
<< " != " << info.pgid << dendl;
result = 0; // hmm?
} else {
unsigned list_size = MIN(cct->_conf->osd_max_pgls, p->op.pgls.count);
dout(10) << " pgnls pg=" << m->get_pg() << " count " << list_size << dendl;
// read into a buffer
vector<hobject_t> sentries;
pg_nls_response_t response;
try {
::decode(response.handle, bp);
}
catch (const buffer::error& e) {
dout(0) << "unable to decode PGNLS handle in " << *m << dendl;
result = -EINVAL;
break;
}
hobject_t next;
hobject_t lower_bound = response.handle;
hobject_t pg_start = info.pgid.pgid.get_hobj_start();
hobject_t pg_end = info.pgid.pgid.get_hobj_end(pool.info.get_pg_num());
dout(10) << " pgnls lower_bound " << lower_bound
<< " pg_end " << pg_end << dendl;
if (get_sort_bitwise() &&
((!lower_bound.is_max() &&
cmp_bitwise(lower_bound, pg_end) >= 0) ||
(lower_bound != hobject_t() &&
cmp_bitwise(lower_bound, pg_start) < 0))) {
// this should only happen with a buggy client.
dout(10) << "outside of PG bounds " << pg_start << " .. "
<< pg_end << dendl;
result = -EINVAL;
break;
}
hobject_t current = lower_bound;
osr->flush();
int r = pgbackend->objects_list_partial(
current,
list_size,
list_size,
&sentries,
&next);
if (r != 0) {
result = -EINVAL;
break;
}
assert(snapid == CEPH_NOSNAP || pg_log.get_missing().missing.empty());
// ensure sort order is correct
pg_log.resort_missing(get_sort_bitwise());
map<hobject_t, pg_missing_t::item, hobject_t::ComparatorWithDefault>::const_iterator missing_iter =
pg_log.get_missing().missing.lower_bound(current);
vector<hobject_t>::iterator ls_iter = sentries.begin();
hobject_t _max = hobject_t::get_max();
while (1) {
const hobject_t &mcand =
missing_iter == pg_log.get_missing().missing.end() ?
_max :
missing_iter->first;
const hobject_t &lcand =
ls_iter == sentries.end() ?
_max :
*ls_iter;
hobject_t candidate;
if (mcand == lcand) {