diff --git a/src/chasers/chaser_confirm.cpp b/src/chasers/chaser_confirm.cpp
index 3ef2d797..e75f49e1 100644
--- a/src/chasers/chaser_confirm.cpp
+++ b/src/chasers/chaser_confirm.cpp
@@ -65,6 +65,7 @@ bool chaser_confirm::handle_event(const code&, chase event_,
         return false;
 
     // Stop generating query during suspension.
+    // Incoming events may already be flushed to the strand at this point.
     if (suspended())
         return true;
 
@@ -132,13 +133,17 @@ void chaser_confirm::do_bump(height_t) NOEXCEPT
 void chaser_confirm::do_bumped(height_t) NOEXCEPT
 {
     BC_ASSERT(stranded());
-    const auto& query = archive();
 
     if (closed())
         return;
 
+    // Stop while suspended as iteration is O(N^2) if blocks not organized.
+    if (suspended())
+        return;
+
     // Guarded by candidate interlock.
     size_t fork_point{};
+    const auto& query = archive();
     auto fork = query.get_validated_fork(fork_point, checkpoint(), filter_);
 
     // Fork may be empty if candidates were reorganized.
@@ -221,6 +226,7 @@ void chaser_confirm::organize(header_states& fork, const header_links& popped,
     auto& query = archive();
     auto height = add1(fork_point);
 
+    // Continue when suspended as write error terminates synchronous loop.
     for (const auto& state: fork)
     {
         switch (state.ec.value())
@@ -238,6 +244,7 @@ void chaser_confirm::organize(header_states& fork, const header_links& popped,
             }
             case database::error::block_valid:
             {
+                // False always sets a store fault (including for disk full).
                 if (!confirm_block(state.link, height, popped, fork_point))
                     return;
 
diff --git a/src/chasers/chaser_snapshot.cpp b/src/chasers/chaser_snapshot.cpp
index bc0b05f8..bac455d9 100644
--- a/src/chasers/chaser_snapshot.cpp
+++ b/src/chasers/chaser_snapshot.cpp
@@ -79,6 +79,7 @@ bool chaser_snapshot::handle_event(const code&, chase event_,
         return false;
 
     // Stop generating query during suspension.
+    // Incoming events may already be flushed to the strand at this point.
     if (suspended())
         return true;
 
diff --git a/src/chasers/chaser_template.cpp b/src/chasers/chaser_template.cpp
index fb47bdd4..6eaba1ef 100644
--- a/src/chasers/chaser_template.cpp
+++ b/src/chasers/chaser_template.cpp
@@ -57,6 +57,7 @@ bool chaser_template::handle_event(const code&, chase event_,
         return false;
 
     // Stop generating query during suspension.
+    // Incoming events may already be flushed to the strand at this point.
     if (suspended())
         return true;
 
diff --git a/src/chasers/chaser_transaction.cpp b/src/chasers/chaser_transaction.cpp
index 0b46dc3d..9a6c0828 100644
--- a/src/chasers/chaser_transaction.cpp
+++ b/src/chasers/chaser_transaction.cpp
@@ -58,6 +58,7 @@ bool chaser_transaction::handle_event(const code&, chase event_,
 
     // TODO: allow required messages.
     ////// Stop generating query during suspension.
+    ////// Incoming events may already be flushed to the strand at this point.
     ////if (suspended())
     ////    return true;
 
diff --git a/src/chasers/chaser_validate.cpp b/src/chasers/chaser_validate.cpp
index e114c8d8..3e4a86f5 100644
--- a/src/chasers/chaser_validate.cpp
+++ b/src/chasers/chaser_validate.cpp
@@ -67,6 +67,7 @@ bool chaser_validate::handle_event(const code&, chase event_,
         return false;
 
     // Stop generating query during suspension.
+    // Incoming events may already be flushed to the strand at this point.
     if (suspended())
         return true;
 
@@ -161,6 +162,7 @@ void chaser_validate::do_bumped(height_t height) NOEXCEPT
     const auto& query = archive();
 
     // Bypass until next event if validation backlog is full.
+    // Stop when suspended as write error des not terminate asynchronous loop.
     while ((backlog_ < maximum_backlog_) && !closed() && !suspended())
     {
         const auto link = query.to_candidate(height);
diff --git a/src/full_node.cpp b/src/full_node.cpp
index 3c9b59a1..4f3be1db 100644
--- a/src/full_node.cpp
+++ b/src/full_node.cpp
@@ -379,6 +379,7 @@ void full_node::fault(const code& ec) NOEXCEPT
         LOGF("Node fault, " << ec.message());
     }
 
+    // If a call does not get all of the channels, subsequent failures do so.
     suspend(ec);
 }