today my TT DB replication Process down and Transaction log has not been updated.I see the tterrors log，find following information :
2016-05-26 08:17:17.56 Err : : 3146232: 4260078/110d368f0: Log flusher continues to encounter error 894: TT0894: Cannot write log file 2516. OS-detected error: Missing file or filesystem -- file "logflusher.c", lineno 3511, procedure "sbLogBufBlksWriteReserve" (this is report 29; first report was at Thu May 26 04:10:37 2016). fslsn = 2516.103792640, disklsn = 2516.103792640, ckptInfo.existLFN = 2516, newestlfn = 2516.
Last through ramunload and ramload solve the question.I check my file system is ok and i do not update the log by hand，just mount the file system,I think should not occur this question . is a BUG? in addition, i want know why ramunload and ramload can solve this question .