osd: handle trim() during backfill and async recovery

Signed-off-by: Neha Ojha <nojha@redhat.com>
(cherry picked from commit e538c31)

src/osd/PG.cc

@@ -3621,7 +3621,8 @@ void PG::append_log(
   eversion_t trim_to,
   eversion_t roll_forward_to,
   ObjectStore::Transaction &t,
-  bool transaction_applied)
+  bool transaction_applied,
+  bool async)
 {
   if (transaction_applied)
     update_snap_map(logv, t);
@@ -3676,7 +3677,12 @@ void PG::append_log(
 
   dout(10) << __func__ << " approx pg log length =  "
            << pg_log.get_log().approx_size() << dendl;
-  pg_log.trim(trim_to, info);
+  dout(10) << __func__ << " transaction_applied = "
+           << transaction_applied << dendl;
+  if (!transaction_applied || async)
+    dout(10) << __func__ << " " << pg_whoami
+             << " is async_recovery or backfill target" << dendl;
+  pg_log.trim(trim_to, info, transaction_applied, async);
 
   // update the local pg, pg log
   dirty_info = true;

src/osd/PG.h

@@ -2885,7 +2885,8 @@ class PG : public DoutPrefixProvider {
     eversion_t trim_to,
     eversion_t roll_forward_to,
     ObjectStore::Transaction &t,
-    bool transaction_applied = true);
+    bool transaction_applied = true,
+    bool async = false);
   bool check_log_for_corruption(ObjectStore *store);
   void trim_log();
 

src/osd/PGLog.cc

@@ -161,13 +161,16 @@ void PGLog::clear_info_log(
 
 void PGLog::trim(
   eversion_t trim_to,
-  pg_info_t &info)
+  pg_info_t &info,
+  bool transaction_applied,
+  bool async)
 {
   dout(10) << __func__ << " proposed trim_to = " << trim_to << dendl;
   // trim?
   if (trim_to > log.tail) {
-    // We shouldn't be trimming the log past last_complete
-    assert(trim_to <= info.last_complete);
+    // Don't assert for async_recovery_targets or backfill_targets
+    if (transaction_applied && !async)
+      assert(trim_to <= info.last_complete);
 
     dout(10) << "trim " << log << " to " << trim_to << dendl;
     log.trim(cct, trim_to, &trimmed, &trimmed_dups, &write_from_dups);

src/osd/PGLog.h

@@ -704,7 +704,9 @@ struct PGLog : DoutPrefixProvider {
 
   void trim(
     eversion_t trim_to,
-    pg_info_t &info);
+    pg_info_t &info,
+    bool transaction_applied = true,
+    bool async = false);
 
   void roll_forward_to(
     eversion_t roll_forward_to,

src/osd/PrimaryLogPG.h

@@ -421,7 +421,7 @@ class PrimaryLogPG : public PG, public PGBackend::Listener {
     if (hset_history) {
       info.hit_set = *hset_history;
     }
-    append_log(logv, trim_to, roll_forward_to, t, transaction_applied);
+    append_log(logv, trim_to, roll_forward_to, t, transaction_applied, async);
   }
 
   void op_applied(const eversion_t &applied_version) override;