kubernetes/vendor/go.etcd.io/etcd/server/v3/wal/repair.go

// Repair tries to repair ErrUnexpectedEOF in the
// last wal file by truncating.
func Repair(lg *zap.Logger, dirpath string) bool { … }

// openLast opens the last wal file for read and write.
func openLast(lg *zap.Logger, dirpath string) (*fileutil.LockedFile, error) { … }