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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "MissingLoc.h"
#define dout_context cct
#undef dout_prefix
#define dout_prefix (gen_prefix(*_dout))
#define dout_subsys ceph_subsys_osd
using std::set;
bool MissingLoc::readable_with_acting(
const hobject_t &hoid,
const set<pg_shard_t> &acting,
eversion_t* v) const {
if (!needs_recovery(hoid, v))
return true;
if (is_deleted(hoid))
return false;
auto missing_loc_entry = missing_loc.find(hoid);
if (missing_loc_entry == missing_loc.end())
return false;
const set<pg_shard_t> &locs = missing_loc_entry->second;
ldout(cct, 10) << __func__ << ": locs:" << locs << dendl;
set<pg_shard_t> have_acting;
for (auto i = locs.begin(); i != locs.end(); ++i) {
if (acting.count(*i))
have_acting.insert(*i);
}
return (*is_readable)(have_acting);
}
void MissingLoc::add_batch_sources_info(
const set<pg_shard_t> &sources,
HBHandle *handle)
{
ldout(cct, 10) << __func__ << ": adding sources in batch "
<< sources.size() << dendl;
unsigned loop = 0;
bool sources_updated = false;
for (auto i = needs_recovery_map.begin();
i != needs_recovery_map.end();
++i) {
if (handle && ++loop >= cct->_conf->osd_loop_before_reset_tphandle) {
handle->reset_tp_timeout();
loop = 0;
}
if (i->second.is_delete())
continue;
auto p = missing_loc.find(i->first);
if (p == missing_loc.end()) {
p = missing_loc.emplace(i->first, set<pg_shard_t>()).first;
} else {
_dec_count(p->second);
}
missing_loc[i->first].insert(sources.begin(), sources.end());
_inc_count(p->second);
if (!sources_updated) {
missing_loc_sources.insert(sources.begin(), sources.end());
sources_updated = true;
}
}
}
bool MissingLoc::add_source_info(
pg_shard_t fromosd,
const pg_info_t &oinfo,
const pg_missing_t &omissing,
HBHandle *handle)
{
bool found_missing = false;
unsigned loop = 0;
bool sources_updated = false;
// found items?
for (auto p = needs_recovery_map.begin();
p != needs_recovery_map.end();
++p) {
const hobject_t &soid(p->first);
eversion_t need = p->second.need;
if (handle && ++loop >= cct->_conf->osd_loop_before_reset_tphandle) {
handle->reset_tp_timeout();
loop = 0;
}
if (p->second.is_delete()) {
ldout(cct, 10) << __func__ << " " << soid
<< " delete, ignoring source" << dendl;
continue;
}
if (oinfo.last_update < need) {
ldout(cct, 10) << "search_for_missing " << soid << " " << need
<< " also missing on osd." << fromosd
<< " (last_update " << oinfo.last_update
<< " < needed " << need << ")" << dendl;
continue;
}
if (p->first >= oinfo.last_backfill) {
// FIXME: this is _probably_ true, although it could conceivably
// be in the undefined region! Hmm!
ldout(cct, 10) << "search_for_missing " << soid << " " << need
<< " also missing on osd." << fromosd
<< " (past last_backfill " << oinfo.last_backfill
<< ")" << dendl;
continue;
}
if (omissing.is_missing(soid)) {
ldout(cct, 10) << "search_for_missing " << soid << " " << need
<< " also missing on osd." << fromosd << dendl;
continue;
}
ldout(cct, 10) << "search_for_missing " << soid << " " << need
<< " is on osd." << fromosd << dendl;
{
auto p = missing_loc.find(soid);
if (p == missing_loc.end()) {
p = missing_loc.emplace(soid, set<pg_shard_t>()).first;
} else {
_dec_count(p->second);
}
p->second.insert(fromosd);
_inc_count(p->second);
}
if (!sources_updated) {
missing_loc_sources.insert(fromosd);
sources_updated = true;
}
found_missing = true;
}
ldout(cct, 20) << "needs_recovery_map missing " << needs_recovery_map
<< dendl;
return found_missing;
}
void MissingLoc::check_recovery_sources(const OSDMapRef& osdmap)
{
set<pg_shard_t> now_down;
for (auto p = missing_loc_sources.begin();
p != missing_loc_sources.end();
) {
if (osdmap->is_up(p->osd)) {
++p;
continue;
}
ldout(cct, 10) << __func__ << " source osd." << *p << " now down" << dendl;
now_down.insert(*p);
missing_loc_sources.erase(p++);
}
if (now_down.empty()) {
ldout(cct, 10) << __func__ << " no source osds (" << missing_loc_sources << ") went down" << dendl;
} else {
ldout(cct, 10) << __func__ << " sources osds " << now_down << " now down, remaining sources are "
<< missing_loc_sources << dendl;
// filter missing_loc
auto p = missing_loc.begin();
while (p != missing_loc.end()) {
auto q = p->second.begin();
bool changed = false;
while (q != p->second.end()) {
if (now_down.count(*q)) {
if (!changed) {
changed = true;
_dec_count(p->second);
}
p->second.erase(q++);
} else {
++q;
}
}
if (p->second.empty()) {
missing_loc.erase(p++);
} else {
if (changed) {
_inc_count(p->second);
}
++p;
}
}
}
}
void MissingLoc::remove_stray_recovery_sources(pg_shard_t stray)
{
ldout(cct, 10) << __func__ << " remove osd " << stray << " from missing_loc" << dendl;
// filter missing_loc
auto p = missing_loc.begin();
while (p != missing_loc.end()) {
auto q = p->second.begin();
bool changed = false;
while (q != p->second.end()) {
if (*q == stray) {
if (!changed) {
changed = true;
_dec_count(p->second);
}
p->second.erase(q++);
} else {
++q;
}
}
if (p->second.empty()) {
missing_loc.erase(p++);
} else {
if (changed) {
_inc_count(p->second);
}
++p;
}
}
// filter missing_loc_sources
for (auto p = missing_loc_sources.begin(); p != missing_loc_sources.end();) {
if (*p != stray) {
++p;
continue;
}
ldout(cct, 10) << __func__ << " remove osd" << stray << " from missing_loc_sources" << dendl;
missing_loc_sources.erase(p++);
}
}
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