How to filter the Block I/O in 2.6 kernel? I have looked some in blktrace. blktrace can trace the block device I/O info. But that can't filter/change this I/O. Is the Linux kernel have any way to filter/change a block i/o before it write to hard disk? I don't want to change kernel code and re-build. Is Kernel already have any I/O filter interface? Thanks, Xiongjia Le -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html