A computer device (2010) has a file system having clusters and meta data. The computer device (2010) includes a processor (1030) and a storage (1025) coupled to the processor and having physical representations of instructions so that the processor is operable to reserve (230) at least one of the clusters and to create a log record when meta data for the file system is to be updated by a write (240) of such meta data beforehand to such a reserved cluster, and then set (250) at least one state entry to substantially represent readiness to write the meta data to the file system.