Merge remote-tracking branch 'origin/main' into cleanup_tmp

memiavl/db.go

@@ -268,6 +268,11 @@ func removeTmpDirs(rootDir string) error {
 	return nil
 }
 
+// ReadOnly returns whether the DB is opened in read-only mode.
+func (db *DB) ReadOnly() bool {
+	return db.readOnly
+}
+
 // SetInitialVersion wraps `MultiTree.SetInitialVersion`.
 // it do an immediate snapshot rewrite, because we can't use wal log to record this change,
 // because we need it to convert versions to wal index in the first place.