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ECBackend.cc
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ECBackend.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) 2013 Inktank Storage, Inc.
*
* 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 <iostream>
#include <sstream>
#include "ECBackend.h"
#include "messages/MOSDPGPush.h"
#include "messages/MOSDPGPushReply.h"
#include "messages/MOSDECSubOpWrite.h"
#include "messages/MOSDECSubOpWriteReply.h"
#include "messages/MOSDECSubOpRead.h"
#include "messages/MOSDECSubOpReadReply.h"
#include "ECMsgTypes.h"
#include "PrimaryLogPG.h"
#define dout_context cct
#define dout_subsys ceph_subsys_osd
#define DOUT_PREFIX_ARGS this
#undef dout_prefix
#define dout_prefix _prefix(_dout, this)
using std::dec;
using std::hex;
using std::less;
using std::list;
using std::make_pair;
using std::map;
using std::pair;
using std::ostream;
using std::set;
using std::string;
using std::unique_ptr;
using std::vector;
using ceph::bufferhash;
using ceph::bufferlist;
using ceph::bufferptr;
using ceph::ErasureCodeInterfaceRef;
using ceph::Formatter;
static ostream& _prefix(std::ostream *_dout, ECBackend *pgb) {
return pgb->get_parent()->gen_dbg_prefix(*_dout);
}
struct ECRecoveryHandle : public PGBackend::RecoveryHandle {
list<ECBackend::RecoveryOp> ops;
};
ostream &operator<<(ostream &lhs, const ECBackend::pipeline_state_t &rhs) {
switch (rhs.pipeline_state) {
case ECBackend::pipeline_state_t::CACHE_VALID:
return lhs << "CACHE_VALID";
case ECBackend::pipeline_state_t::CACHE_INVALID:
return lhs << "CACHE_INVALID";
default:
ceph_abort_msg("invalid pipeline state");
}
return lhs; // unreachable
}
static ostream &operator<<(ostream &lhs, const map<pg_shard_t, bufferlist> &rhs)
{
lhs << "[";
for (map<pg_shard_t, bufferlist>::const_iterator i = rhs.begin();
i != rhs.end();
++i) {
if (i != rhs.begin())
lhs << ", ";
lhs << make_pair(i->first, i->second.length());
}
return lhs << "]";
}
static ostream &operator<<(ostream &lhs, const map<int, bufferlist> &rhs)
{
lhs << "[";
for (map<int, bufferlist>::const_iterator i = rhs.begin();
i != rhs.end();
++i) {
if (i != rhs.begin())
lhs << ", ";
lhs << make_pair(i->first, i->second.length());
}
return lhs << "]";
}
static ostream &operator<<(
ostream &lhs,
const boost::tuple<uint64_t, uint64_t, map<pg_shard_t, bufferlist> > &rhs)
{
return lhs << "(" << rhs.get<0>() << ", "
<< rhs.get<1>() << ", " << rhs.get<2>() << ")";
}
ostream &operator<<(ostream &lhs, const ECBackend::read_request_t &rhs)
{
return lhs << "read_request_t(to_read=[" << rhs.to_read << "]"
<< ", need=" << rhs.need
<< ", want_attrs=" << rhs.want_attrs
<< ")";
}
ostream &operator<<(ostream &lhs, const ECBackend::read_result_t &rhs)
{
lhs << "read_result_t(r=" << rhs.r
<< ", errors=" << rhs.errors;
if (rhs.attrs) {
lhs << ", attrs=" << *(rhs.attrs);
} else {
lhs << ", noattrs";
}
return lhs << ", returned=" << rhs.returned << ")";
}
ostream &operator<<(ostream &lhs, const ECBackend::ReadOp &rhs)
{
lhs << "ReadOp(tid=" << rhs.tid;
if (rhs.op && rhs.op->get_req()) {
lhs << ", op=";
rhs.op->get_req()->print(lhs);
}
return lhs << ", to_read=" << rhs.to_read
<< ", complete=" << rhs.complete
<< ", priority=" << rhs.priority
<< ", obj_to_source=" << rhs.obj_to_source
<< ", source_to_obj=" << rhs.source_to_obj
<< ", in_progress=" << rhs.in_progress << ")";
}
void ECBackend::ReadOp::dump(Formatter *f) const
{
f->dump_unsigned("tid", tid);
if (op && op->get_req()) {
f->dump_stream("op") << *(op->get_req());
}
f->dump_stream("to_read") << to_read;
f->dump_stream("complete") << complete;
f->dump_int("priority", priority);
f->dump_stream("obj_to_source") << obj_to_source;
f->dump_stream("source_to_obj") << source_to_obj;
f->dump_stream("in_progress") << in_progress;
}
ostream &operator<<(ostream &lhs, const ECBackend::Op &rhs)
{
lhs << "Op(" << rhs.hoid
<< " v=" << rhs.version
<< " tt=" << rhs.trim_to
<< " tid=" << rhs.tid
<< " reqid=" << rhs.reqid;
if (rhs.client_op && rhs.client_op->get_req()) {
lhs << " client_op=";
rhs.client_op->get_req()->print(lhs);
}
lhs << " roll_forward_to=" << rhs.roll_forward_to
<< " temp_added=" << rhs.temp_added
<< " temp_cleared=" << rhs.temp_cleared
<< " pending_read=" << rhs.pending_read
<< " remote_read=" << rhs.remote_read
<< " remote_read_result=" << rhs.remote_read_result
<< " pending_apply=" << rhs.pending_apply
<< " pending_commit=" << rhs.pending_commit
<< " plan.to_read=" << rhs.plan.to_read
<< " plan.will_write=" << rhs.plan.will_write
<< ")";
return lhs;
}
ostream &operator<<(ostream &lhs, const ECBackend::RecoveryOp &rhs)
{
return lhs << "RecoveryOp("
<< "hoid=" << rhs.hoid
<< " v=" << rhs.v
<< " missing_on=" << rhs.missing_on
<< " missing_on_shards=" << rhs.missing_on_shards
<< " recovery_info=" << rhs.recovery_info
<< " recovery_progress=" << rhs.recovery_progress
<< " obc refcount=" << rhs.obc.use_count()
<< " state=" << ECBackend::RecoveryOp::tostr(rhs.state)
<< " waiting_on_pushes=" << rhs.waiting_on_pushes
<< " extent_requested=" << rhs.extent_requested
<< ")";
}
void ECBackend::RecoveryOp::dump(Formatter *f) const
{
f->dump_stream("hoid") << hoid;
f->dump_stream("v") << v;
f->dump_stream("missing_on") << missing_on;
f->dump_stream("missing_on_shards") << missing_on_shards;
f->dump_stream("recovery_info") << recovery_info;
f->dump_stream("recovery_progress") << recovery_progress;
f->dump_stream("state") << tostr(state);
f->dump_stream("waiting_on_pushes") << waiting_on_pushes;
f->dump_stream("extent_requested") << extent_requested;
}
ECBackend::ECBackend(
PGBackend::Listener *pg,
const coll_t &coll,
ObjectStore::CollectionHandle &ch,
ObjectStore *store,
CephContext *cct,
ErasureCodeInterfaceRef ec_impl,
uint64_t stripe_width)
: PGBackend(cct, pg, store, coll, ch),
ec_impl(ec_impl),
sinfo(ec_impl->get_data_chunk_count(), stripe_width) {
ceph_assert((ec_impl->get_data_chunk_count() *
ec_impl->get_chunk_size(stripe_width)) == stripe_width);
}
PGBackend::RecoveryHandle *ECBackend::open_recovery_op()
{
return new ECRecoveryHandle;
}
void ECBackend::_failed_push(const hobject_t &hoid,
pair<RecoveryMessages *, ECBackend::read_result_t &> &in)
{
ECBackend::read_result_t &res = in.second;
dout(10) << __func__ << ": Read error " << hoid << " r="
<< res.r << " errors=" << res.errors << dendl;
dout(10) << __func__ << ": canceling recovery op for obj " << hoid
<< dendl;
ceph_assert(recovery_ops.count(hoid));
eversion_t v = recovery_ops[hoid].v;
recovery_ops.erase(hoid);
set<pg_shard_t> fl;
for (auto&& i : res.errors) {
fl.insert(i.first);
}
get_parent()->on_failed_pull(fl, hoid, v);
}
struct OnRecoveryReadComplete :
public GenContext<pair<RecoveryMessages*, ECBackend::read_result_t& > &> {
ECBackend *pg;
hobject_t hoid;
OnRecoveryReadComplete(ECBackend *pg, const hobject_t &hoid)
: pg(pg), hoid(hoid) {}
void finish(pair<RecoveryMessages *, ECBackend::read_result_t &> &in) override {
ECBackend::read_result_t &res = in.second;
if (!(res.r == 0 && res.errors.empty())) {
pg->_failed_push(hoid, in);
return;
}
ceph_assert(res.returned.size() == 1);
pg->handle_recovery_read_complete(
hoid,
res.returned.back(),
res.attrs,
in.first);
}
};
struct RecoveryMessages {
map<hobject_t,
ECBackend::read_request_t> reads;
map<hobject_t, set<int>> want_to_read;
void read(
ECBackend *ec,
const hobject_t &hoid, uint64_t off, uint64_t len,
set<int> &&_want_to_read,
const map<pg_shard_t, vector<pair<int, int>>> &need,
bool attrs) {
list<boost::tuple<uint64_t, uint64_t, uint32_t> > to_read;
to_read.push_back(boost::make_tuple(off, len, 0));
ceph_assert(!reads.count(hoid));
want_to_read.insert(make_pair(hoid, std::move(_want_to_read)));
reads.insert(
make_pair(
hoid,
ECBackend::read_request_t(
to_read,
need,
attrs,
new OnRecoveryReadComplete(
ec,
hoid))));
}
map<pg_shard_t, vector<PushOp> > pushes;
map<pg_shard_t, vector<PushReplyOp> > push_replies;
ObjectStore::Transaction t;
RecoveryMessages() {}
~RecoveryMessages() {}
};
void ECBackend::handle_recovery_push(
const PushOp &op,
RecoveryMessages *m,
bool is_repair)
{
if (get_parent()->check_failsafe_full()) {
dout(10) << __func__ << " Out of space (failsafe) processing push request." << dendl;
ceph_abort();
}
bool oneshot = op.before_progress.first && op.after_progress.data_complete;
ghobject_t tobj;
if (oneshot) {
tobj = ghobject_t(op.soid, ghobject_t::NO_GEN,
get_parent()->whoami_shard().shard);
} else {
tobj = ghobject_t(get_parent()->get_temp_recovery_object(op.soid,
op.version),
ghobject_t::NO_GEN,
get_parent()->whoami_shard().shard);
if (op.before_progress.first) {
dout(10) << __func__ << ": Adding oid "
<< tobj.hobj << " in the temp collection" << dendl;
add_temp_obj(tobj.hobj);
}
}
if (op.before_progress.first) {
m->t.remove(coll, tobj);
m->t.touch(coll, tobj);
}
if (!op.data_included.empty()) {
uint64_t start = op.data_included.range_start();
uint64_t end = op.data_included.range_end();
ceph_assert(op.data.length() == (end - start));
m->t.write(
coll,
tobj,
start,
op.data.length(),
op.data);
} else {
ceph_assert(op.data.length() == 0);
}
if (get_parent()->pg_is_remote_backfilling()) {
get_parent()->pg_add_local_num_bytes(op.data.length());
get_parent()->pg_add_num_bytes(op.data.length() * get_ec_data_chunk_count());
dout(10) << __func__ << " " << op.soid
<< " add new actual data by " << op.data.length()
<< " add new num_bytes by " << op.data.length() * get_ec_data_chunk_count()
<< dendl;
}
if (op.before_progress.first) {
ceph_assert(op.attrset.count(string("_")));
m->t.setattrs(
coll,
tobj,
op.attrset);
}
if (op.after_progress.data_complete && !oneshot) {
dout(10) << __func__ << ": Removing oid "
<< tobj.hobj << " from the temp collection" << dendl;
clear_temp_obj(tobj.hobj);
m->t.remove(coll, ghobject_t(
op.soid, ghobject_t::NO_GEN, get_parent()->whoami_shard().shard));
m->t.collection_move_rename(
coll, tobj,
coll, ghobject_t(
op.soid, ghobject_t::NO_GEN, get_parent()->whoami_shard().shard));
}
if (op.after_progress.data_complete) {
if ((get_parent()->pgb_is_primary())) {
ceph_assert(recovery_ops.count(op.soid));
ceph_assert(recovery_ops[op.soid].obc);
if (get_parent()->pg_is_repair())
get_parent()->inc_osd_stat_repaired();
get_parent()->on_local_recover(
op.soid,
op.recovery_info,
recovery_ops[op.soid].obc,
false,
&m->t);
} else {
// If primary told us this is a repair, bump osd_stat_t::num_objects_repaired
if (is_repair)
get_parent()->inc_osd_stat_repaired();
get_parent()->on_local_recover(
op.soid,
op.recovery_info,
ObjectContextRef(),
false,
&m->t);
if (get_parent()->pg_is_remote_backfilling()) {
struct stat st;
int r = store->stat(ch, ghobject_t(op.soid, ghobject_t::NO_GEN,
get_parent()->whoami_shard().shard), &st);
if (r == 0) {
get_parent()->pg_sub_local_num_bytes(st.st_size);
// XXX: This can be way overestimated for small objects
get_parent()->pg_sub_num_bytes(st.st_size * get_ec_data_chunk_count());
dout(10) << __func__ << " " << op.soid
<< " sub actual data by " << st.st_size
<< " sub num_bytes by " << st.st_size * get_ec_data_chunk_count()
<< dendl;
}
}
}
}
m->push_replies[get_parent()->primary_shard()].push_back(PushReplyOp());
m->push_replies[get_parent()->primary_shard()].back().soid = op.soid;
}
void ECBackend::handle_recovery_push_reply(
const PushReplyOp &op,
pg_shard_t from,
RecoveryMessages *m)
{
if (!recovery_ops.count(op.soid))
return;
RecoveryOp &rop = recovery_ops[op.soid];
ceph_assert(rop.waiting_on_pushes.count(from));
rop.waiting_on_pushes.erase(from);
continue_recovery_op(rop, m);
}
void ECBackend::handle_recovery_read_complete(
const hobject_t &hoid,
boost::tuple<uint64_t, uint64_t, map<pg_shard_t, bufferlist> > &to_read,
std::optional<map<string, bufferlist, less<>> > attrs,
RecoveryMessages *m)
{
dout(10) << __func__ << ": returned " << hoid << " "
<< "(" << to_read.get<0>()
<< ", " << to_read.get<1>()
<< ", " << to_read.get<2>()
<< ")"
<< dendl;
ceph_assert(recovery_ops.count(hoid));
RecoveryOp &op = recovery_ops[hoid];
ceph_assert(op.returned_data.empty());
map<int, bufferlist*> target;
for (set<shard_id_t>::iterator i = op.missing_on_shards.begin();
i != op.missing_on_shards.end();
++i) {
target[*i] = &(op.returned_data[*i]);
}
map<int, bufferlist> from;
for(map<pg_shard_t, bufferlist>::iterator i = to_read.get<2>().begin();
i != to_read.get<2>().end();
++i) {
from[i->first.shard] = std::move(i->second);
}
dout(10) << __func__ << ": " << from << dendl;
int r;
r = ECUtil::decode(sinfo, ec_impl, from, target);
ceph_assert(r == 0);
if (attrs) {
op.xattrs.swap(*attrs);
if (!op.obc) {
// attrs only reference the origin bufferlist (decode from
// ECSubReadReply message) whose size is much greater than attrs
// in recovery. If obc cache it (get_obc maybe cache the attr),
// this causes the whole origin bufferlist would not be free
// until obc is evicted from obc cache. So rebuild the
// bufferlist before cache it.
for (map<string, bufferlist>::iterator it = op.xattrs.begin();
it != op.xattrs.end();
++it) {
it->second.rebuild();
}
// Need to remove ECUtil::get_hinfo_key() since it should not leak out
// of the backend (see bug #12983)
map<string, bufferlist, less<>> sanitized_attrs(op.xattrs);
sanitized_attrs.erase(ECUtil::get_hinfo_key());
op.obc = get_parent()->get_obc(hoid, sanitized_attrs);
ceph_assert(op.obc);
op.recovery_info.size = op.obc->obs.oi.size;
op.recovery_info.oi = op.obc->obs.oi;
}
ECUtil::HashInfo hinfo(ec_impl->get_chunk_count());
if (op.obc->obs.oi.size > 0) {
ceph_assert(op.xattrs.count(ECUtil::get_hinfo_key()));
auto bp = op.xattrs[ECUtil::get_hinfo_key()].cbegin();
decode(hinfo, bp);
}
op.hinfo = unstable_hashinfo_registry.lookup_or_create(hoid, hinfo);
}
ceph_assert(op.xattrs.size());
ceph_assert(op.obc);
continue_recovery_op(op, m);
}
struct SendPushReplies : public Context {
PGBackend::Listener *l;
epoch_t epoch;
map<int, MOSDPGPushReply*> replies;
SendPushReplies(
PGBackend::Listener *l,
epoch_t epoch,
map<int, MOSDPGPushReply*> &in) : l(l), epoch(epoch) {
replies.swap(in);
}
void finish(int) override {
std::vector<std::pair<int, Message*>> messages;
messages.reserve(replies.size());
for (map<int, MOSDPGPushReply*>::iterator i = replies.begin();
i != replies.end();
++i) {
messages.push_back(std::make_pair(i->first, i->second));
}
if (!messages.empty()) {
l->send_message_osd_cluster(messages, epoch);
}
replies.clear();
}
~SendPushReplies() override {
for (map<int, MOSDPGPushReply*>::iterator i = replies.begin();
i != replies.end();
++i) {
i->second->put();
}
replies.clear();
}
};
void ECBackend::dispatch_recovery_messages(RecoveryMessages &m, int priority)
{
for (map<pg_shard_t, vector<PushOp> >::iterator i = m.pushes.begin();
i != m.pushes.end();
m.pushes.erase(i++)) {
MOSDPGPush *msg = new MOSDPGPush();
msg->set_priority(priority);
msg->map_epoch = get_osdmap_epoch();
msg->min_epoch = get_parent()->get_last_peering_reset_epoch();
msg->from = get_parent()->whoami_shard();
msg->pgid = spg_t(get_parent()->get_info().pgid.pgid, i->first.shard);
msg->pushes.swap(i->second);
msg->compute_cost(cct);
msg->is_repair = get_parent()->pg_is_repair();
get_parent()->send_message(
i->first.osd,
msg);
}
map<int, MOSDPGPushReply*> replies;
for (map<pg_shard_t, vector<PushReplyOp> >::iterator i =
m.push_replies.begin();
i != m.push_replies.end();
m.push_replies.erase(i++)) {
MOSDPGPushReply *msg = new MOSDPGPushReply();
msg->set_priority(priority);
msg->map_epoch = get_osdmap_epoch();
msg->min_epoch = get_parent()->get_last_peering_reset_epoch();
msg->from = get_parent()->whoami_shard();
msg->pgid = spg_t(get_parent()->get_info().pgid.pgid, i->first.shard);
msg->replies.swap(i->second);
msg->compute_cost(cct);
replies.insert(make_pair(i->first.osd, msg));
}
if (!replies.empty()) {
(m.t).register_on_complete(
get_parent()->bless_context(
new SendPushReplies(
get_parent(),
get_osdmap_epoch(),
replies)));
get_parent()->queue_transaction(std::move(m.t));
}
if (m.reads.empty())
return;
start_read_op(
priority,
m.want_to_read,
m.reads,
OpRequestRef(),
false, true);
}
void ECBackend::continue_recovery_op(
RecoveryOp &op,
RecoveryMessages *m)
{
dout(10) << __func__ << ": continuing " << op << dendl;
while (1) {
switch (op.state) {
case RecoveryOp::IDLE: {
// start read
op.state = RecoveryOp::READING;
ceph_assert(!op.recovery_progress.data_complete);
set<int> want(op.missing_on_shards.begin(), op.missing_on_shards.end());
uint64_t from = op.recovery_progress.data_recovered_to;
uint64_t amount = get_recovery_chunk_size();
if (op.recovery_progress.first && op.obc) {
/* We've got the attrs and the hinfo, might as well use them */
op.hinfo = get_hash_info(op.hoid);
ceph_assert(op.hinfo);
op.xattrs = op.obc->attr_cache;
encode(*(op.hinfo), op.xattrs[ECUtil::get_hinfo_key()]);
}
map<pg_shard_t, vector<pair<int, int>>> to_read;
int r = get_min_avail_to_read_shards(
op.hoid, want, true, false, &to_read);
if (r != 0) {
// we must have lost a recovery source
ceph_assert(!op.recovery_progress.first);
dout(10) << __func__ << ": canceling recovery op for obj " << op.hoid
<< dendl;
get_parent()->cancel_pull(op.hoid);
recovery_ops.erase(op.hoid);
return;
}
m->read(
this,
op.hoid,
op.recovery_progress.data_recovered_to,
amount,
std::move(want),
to_read,
op.recovery_progress.first && !op.obc);
op.extent_requested = make_pair(
from,
amount);
dout(10) << __func__ << ": IDLE return " << op << dendl;
return;
}
case RecoveryOp::READING: {
// read completed, start write
ceph_assert(op.xattrs.size());
ceph_assert(op.returned_data.size());
op.state = RecoveryOp::WRITING;
ObjectRecoveryProgress after_progress = op.recovery_progress;
after_progress.data_recovered_to += op.extent_requested.second;
after_progress.first = false;
if (after_progress.data_recovered_to >= op.obc->obs.oi.size) {
after_progress.data_recovered_to =
sinfo.logical_to_next_stripe_offset(
op.obc->obs.oi.size);
after_progress.data_complete = true;
}
for (set<pg_shard_t>::iterator mi = op.missing_on.begin();
mi != op.missing_on.end();
++mi) {
ceph_assert(op.returned_data.count(mi->shard));
m->pushes[*mi].push_back(PushOp());
PushOp &pop = m->pushes[*mi].back();
pop.soid = op.hoid;
pop.version = op.v;
pop.data = op.returned_data[mi->shard];
dout(10) << __func__ << ": before_progress=" << op.recovery_progress
<< ", after_progress=" << after_progress
<< ", pop.data.length()=" << pop.data.length()
<< ", size=" << op.obc->obs.oi.size << dendl;
ceph_assert(
pop.data.length() ==
sinfo.aligned_logical_offset_to_chunk_offset(
after_progress.data_recovered_to -
op.recovery_progress.data_recovered_to)
);
if (pop.data.length())
pop.data_included.insert(
sinfo.aligned_logical_offset_to_chunk_offset(
op.recovery_progress.data_recovered_to),
pop.data.length()
);
if (op.recovery_progress.first) {
pop.attrset = op.xattrs;
}
pop.recovery_info = op.recovery_info;
pop.before_progress = op.recovery_progress;
pop.after_progress = after_progress;
if (*mi != get_parent()->primary_shard())
get_parent()->begin_peer_recover(
*mi,
op.hoid);
}
op.returned_data.clear();
op.waiting_on_pushes = op.missing_on;
op.recovery_progress = after_progress;
dout(10) << __func__ << ": READING return " << op << dendl;
return;
}
case RecoveryOp::WRITING: {
if (op.waiting_on_pushes.empty()) {
if (op.recovery_progress.data_complete) {
op.state = RecoveryOp::COMPLETE;
for (set<pg_shard_t>::iterator i = op.missing_on.begin();
i != op.missing_on.end();
++i) {
if (*i != get_parent()->primary_shard()) {
dout(10) << __func__ << ": on_peer_recover on " << *i
<< ", obj " << op.hoid << dendl;
get_parent()->on_peer_recover(
*i,
op.hoid,
op.recovery_info);
}
}
object_stat_sum_t stat;
stat.num_bytes_recovered = op.recovery_info.size;
stat.num_keys_recovered = 0; // ??? op ... omap_entries.size(); ?
stat.num_objects_recovered = 1;
if (get_parent()->pg_is_repair())
stat.num_objects_repaired = 1;
get_parent()->on_global_recover(op.hoid, stat, false);
dout(10) << __func__ << ": WRITING return " << op << dendl;
recovery_ops.erase(op.hoid);
return;
} else {
op.state = RecoveryOp::IDLE;
dout(10) << __func__ << ": WRITING continue " << op << dendl;
continue;
}
}
return;
}
// should never be called once complete
case RecoveryOp::COMPLETE:
default: {
ceph_abort();
};
}
}
}
void ECBackend::run_recovery_op(
RecoveryHandle *_h,
int priority)
{
ECRecoveryHandle *h = static_cast<ECRecoveryHandle*>(_h);
RecoveryMessages m;
for (list<RecoveryOp>::iterator i = h->ops.begin();
i != h->ops.end();
++i) {
dout(10) << __func__ << ": starting " << *i << dendl;
ceph_assert(!recovery_ops.count(i->hoid));
RecoveryOp &op = recovery_ops.insert(make_pair(i->hoid, *i)).first->second;
continue_recovery_op(op, &m);
}
dispatch_recovery_messages(m, priority);
send_recovery_deletes(priority, h->deletes);
delete _h;
}
int ECBackend::recover_object(
const hobject_t &hoid,
eversion_t v,
ObjectContextRef head,
ObjectContextRef obc,
RecoveryHandle *_h)
{
ECRecoveryHandle *h = static_cast<ECRecoveryHandle*>(_h);
h->ops.push_back(RecoveryOp());
h->ops.back().v = v;
h->ops.back().hoid = hoid;
h->ops.back().obc = obc;
h->ops.back().recovery_info.soid = hoid;
h->ops.back().recovery_info.version = v;
if (obc) {
h->ops.back().recovery_info.size = obc->obs.oi.size;
h->ops.back().recovery_info.oi = obc->obs.oi;
}
if (hoid.is_snap()) {
if (obc) {
ceph_assert(obc->ssc);
h->ops.back().recovery_info.ss = obc->ssc->snapset;
} else if (head) {
ceph_assert(head->ssc);
h->ops.back().recovery_info.ss = head->ssc->snapset;
} else {
ceph_abort_msg("neither obc nor head set for a snap object");
}
}
h->ops.back().recovery_progress.omap_complete = true;
for (set<pg_shard_t>::const_iterator i =
get_parent()->get_acting_recovery_backfill_shards().begin();
i != get_parent()->get_acting_recovery_backfill_shards().end();
++i) {
dout(10) << "checking " << *i << dendl;
if (get_parent()->get_shard_missing(*i).is_missing(hoid)) {
h->ops.back().missing_on.insert(*i);
h->ops.back().missing_on_shards.insert(i->shard);
}
}
dout(10) << __func__ << ": built op " << h->ops.back() << dendl;
return 0;
}
bool ECBackend::can_handle_while_inactive(
OpRequestRef _op)
{
return false;
}
bool ECBackend::_handle_message(
OpRequestRef _op)
{
dout(10) << __func__ << ": " << *_op->get_req() << dendl;
int priority = _op->get_req()->get_priority();
switch (_op->get_req()->get_type()) {
case MSG_OSD_EC_WRITE: {
// NOTE: this is non-const because handle_sub_write modifies the embedded
// ObjectStore::Transaction in place (and then std::move's it). It does
// not conflict with ECSubWrite's operator<<.
MOSDECSubOpWrite *op = static_cast<MOSDECSubOpWrite*>(
_op->get_nonconst_req());
parent->maybe_preempt_replica_scrub(op->op.soid);
handle_sub_write(op->op.from, _op, op->op, _op->pg_trace);
return true;
}
case MSG_OSD_EC_WRITE_REPLY: {
const MOSDECSubOpWriteReply *op = static_cast<const MOSDECSubOpWriteReply*>(
_op->get_req());
handle_sub_write_reply(op->op.from, op->op, _op->pg_trace);
return true;
}
case MSG_OSD_EC_READ: {
auto op = _op->get_req<MOSDECSubOpRead>();
MOSDECSubOpReadReply *reply = new MOSDECSubOpReadReply;
reply->pgid = get_parent()->primary_spg_t();
reply->map_epoch = get_osdmap_epoch();
reply->min_epoch = get_parent()->get_interval_start_epoch();
handle_sub_read(op->op.from, op->op, &(reply->op), _op->pg_trace);
reply->trace = _op->pg_trace;
get_parent()->send_message_osd_cluster(
reply, _op->get_req()->get_connection());
return true;
}
case MSG_OSD_EC_READ_REPLY: {
// NOTE: this is non-const because handle_sub_read_reply steals resulting
// buffers. It does not conflict with ECSubReadReply operator<<.
MOSDECSubOpReadReply *op = static_cast<MOSDECSubOpReadReply*>(
_op->get_nonconst_req());
RecoveryMessages rm;
handle_sub_read_reply(op->op.from, op->op, &rm, _op->pg_trace);
dispatch_recovery_messages(rm, priority);
return true;
}
case MSG_OSD_PG_PUSH: {
auto op = _op->get_req<MOSDPGPush>();
RecoveryMessages rm;
for (vector<PushOp>::const_iterator i = op->pushes.begin();
i != op->pushes.end();
++i) {
handle_recovery_push(*i, &rm, op->is_repair);
}
dispatch_recovery_messages(rm, priority);
return true;
}
case MSG_OSD_PG_PUSH_REPLY: {
const MOSDPGPushReply *op = static_cast<const MOSDPGPushReply *>(
_op->get_req());
RecoveryMessages rm;
for (vector<PushReplyOp>::const_iterator i = op->replies.begin();
i != op->replies.end();
++i) {
handle_recovery_push_reply(*i, op->from, &rm);
}
dispatch_recovery_messages(rm, priority);
return true;
}
default:
return false;
}
return false;
}
struct SubWriteCommitted : public Context {
ECBackend *pg;
OpRequestRef msg;
ceph_tid_t tid;
eversion_t version;
eversion_t last_complete;
const ZTracer::Trace trace;
SubWriteCommitted(
ECBackend *pg,
OpRequestRef msg,
ceph_tid_t tid,
eversion_t version,
eversion_t last_complete,
const ZTracer::Trace &trace)
: pg(pg), msg(msg), tid(tid),
version(version), last_complete(last_complete), trace(trace) {}
void finish(int) override {
if (msg)
msg->mark_event("sub_op_committed");
pg->sub_write_committed(tid, version, last_complete, trace);
}
};
void ECBackend::sub_write_committed(
ceph_tid_t tid, eversion_t version, eversion_t last_complete,
const ZTracer::Trace &trace) {
if (get_parent()->pgb_is_primary()) {
ECSubWriteReply reply;
reply.tid = tid;
reply.last_complete = last_complete;
reply.committed = true;
reply.applied = true;
reply.from = get_parent()->whoami_shard();
handle_sub_write_reply(
get_parent()->whoami_shard(),
reply, trace);
} else {
get_parent()->update_last_complete_ondisk(last_complete);
MOSDECSubOpWriteReply *r = new MOSDECSubOpWriteReply;
r->pgid = get_parent()->primary_spg_t();
r->map_epoch = get_osdmap_epoch();
r->min_epoch = get_parent()->get_interval_start_epoch();
r->op.tid = tid;
r->op.last_complete = last_complete;
r->op.committed = true;
r->op.applied = true;
r->op.from = get_parent()->whoami_shard();
r->set_priority(CEPH_MSG_PRIO_HIGH);
r->trace = trace;
r->trace.event("sending sub op commit");
get_parent()->send_message_osd_cluster(
get_parent()->primary_shard().osd, r, get_osdmap_epoch());
}
}
void ECBackend::handle_sub_write(
pg_shard_t from,
OpRequestRef msg,
ECSubWrite &op,
const ZTracer::Trace &trace)
{
if (msg)
msg->mark_event("sub_op_started");
trace.event("handle_sub_write");
#ifdef HAVE_JAEGER
if (msg && msg->osd_parent_span) {
auto ec_sub_trans = jaeger_tracing::child_span(__func__, msg->osd_parent_span);
}
#endif
if (!get_parent()->pgb_is_primary())
get_parent()->update_stats(op.stats);
ObjectStore::Transaction localt;
if (!op.temp_added.empty()) {
add_temp_objs(op.temp_added);
}
if (op.backfill_or_async_recovery) {
for (set<hobject_t>::iterator i = op.temp_removed.begin();
i != op.temp_removed.end();
++i) {
dout(10) << __func__ << ": removing object " << *i
<< " since we won't get the transaction" << dendl;
localt.remove(
coll,
ghobject_t(
*i,
ghobject_t::NO_GEN,
get_parent()->whoami_shard().shard));
}
}
clear_temp_objs(op.temp_removed);
dout(30) << __func__ << " missing before " << get_parent()->get_log().get_missing().get_items() << dendl;
// flag set to true during async recovery
bool async = false;
pg_missing_tracker_t pmissing = get_parent()->get_local_missing();
if (pmissing.is_missing(op.soid)) {
async = true;
dout(30) << __func__ << " is_missing " << pmissing.is_missing(op.soid) << dendl;
for (auto &&e: op.log_entries) {
dout(30) << " add_next_event entry " << e << dendl;
get_parent()->add_local_next_event(e);
dout(30) << " entry is_delete " << e.is_delete() << dendl;
}
}
get_parent()->log_operation(
std::move(op.log_entries),
op.updated_hit_set_history,
op.trim_to,
op.roll_forward_to,
op.roll_forward_to,
!op.backfill_or_async_recovery,
localt,
async);
if (!get_parent()->pg_is_undersized() &&
(unsigned)get_parent()->whoami_shard().shard >=
ec_impl->get_data_chunk_count())
op.t.set_fadvise_flag(CEPH_OSD_OP_FLAG_FADVISE_DONTNEED);
localt.register_on_commit(
get_parent()->bless_context(
new SubWriteCommitted(