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-rw-r--r--src/mon/OSDMonitor.h22
1 files changed, 19 insertions, 3 deletions
diff --git a/src/mon/OSDMonitor.h b/src/mon/OSDMonitor.h
index 16880f077..e20da536b 100644
--- a/src/mon/OSDMonitor.h
+++ b/src/mon/OSDMonitor.h
@@ -114,7 +114,13 @@ class LastEpochClean {
public:
void report(unsigned pg_num, const pg_t& pg, epoch_t last_epoch_clean);
void remove_pool(uint64_t pool);
- epoch_t get_lower_bound(const OSDMap& latest) const;
+ /**
+ * get_lower_bound_by_pool
+ *
+ * Returns epoch e such that e <= pg.last_epoch_clean for all pgs in cluster.
+ * May return 0 if any pool does not have comprehensive values for all pgs.
+ */
+ epoch_t get_lower_bound_by_pool(const OSDMap& latest) const;
void dump(Formatter *f) const;
};
@@ -643,8 +649,18 @@ protected:
// when we last received PG stats from each osd and the osd's osd_beacon_report_interval
std::map<int, std::pair<utime_t, int>> last_osd_report;
- // TODO: use last_osd_report to store the osd report epochs, once we don't
- // need to upgrade from pre-luminous releases.
+ /**
+ * osd_epochs
+ *
+ * Records the MOSDBeacon::version (the osd epoch at which the OSD sent the
+ * beacon) of the most recent beacon recevied from each currently up OSD.
+ * Used in OSDMonitor::get_min_last_epoch_clean().
+ * Down osds are trimmed upon commit of each map
+ * (OSDMonitor::update_from_paxos).
+ *
+ * TODO: use last_osd_report to store the osd report epochs, once we don't
+ * need to upgrade from pre-luminous releases.
+ */
std::map<int,epoch_t> osd_epochs;
LastEpochClean last_epoch_clean;
bool preprocess_beacon(MonOpRequestRef op);