diff --git a/server/etcdserver/corrupt.go b/server/etcdserver/corrupt.go
index 20e19fbb7..3aa5c78f1 100644
--- a/server/etcdserver/corrupt.go
+++ b/server/etcdserver/corrupt.go
@@ -86,7 +86,6 @@ func (h hasherAdapter) TriggerCorruptAlarm(memberID types.ID) {
 // before serving any peer/client traffic. Only mismatch when hashes
 // are different at requested revision, with same compact revision.
 func (cm *corruptionChecker) InitialCheck() error {
-
 	cm.lg.Info(
 		"starting initial corruption check",
 		zap.String("local-member-id", cm.hasher.MemberId().String()),
@@ -260,7 +259,7 @@ func (cm *corruptionChecker) PeriodicCheck() error {
 // have different hashes.
 //
 // We might miss opportunity to perform the check if the compaction is still
-// ongoing on one of the members or it was unresponsive. In such situation the
+// ongoing on one of the members, or it was unresponsive. In such situation the
 // method still passes without raising alarm.
 func (cm *corruptionChecker) CompactHashCheck() {
 	cm.lg.Info("starting compact hash check",
diff --git a/server/storage/mvcc/hash.go b/server/storage/mvcc/hash.go
index 0c8e92240..385d0c979 100644
--- a/server/storage/mvcc/hash.go
+++ b/server/storage/mvcc/hash.go
@@ -86,7 +86,12 @@ type KeyValueHash struct {
 }
 
 type HashStorage interface {
-	// Hash computes the hash of the KV's backend.
+	// Hash computes the hash of the whole backend keyspace,
+	// including key, lease, and other buckets in storage.
+	// This is designed for testing ONLY!
+	// Do not rely on this in production with ongoing transactions,
+	// since Hash operation does not hold MVCC locks.
+	// Use "HashByRev" method instead for "key" bucket consistency checks.
 	Hash() (hash uint32, revision int64, err error)
 
 	// HashByRev computes the hash of all MVCC revisions up to a given revision.