Hi, Richard Do you have good suggestions about how to prevent this condiciton: http://www.linux-mtd.infradead.org/faq/ubifs.html#L_end_hole ? Do you know How about usig direct I/O? and set the flush cache with higher frequecy? I don't know If it is possible for currently UBIFS to firstly program data inode and then program its metadata assocated. If yes, it is necessary/feasible to acchive it? Thanks. //beanhuo