On 12/02/2015 09:33 PM, Dallas Clement wrote: > I'm not sure that the sync=1 has any effect in this case where I've > got direct=1 set (for non buffered I/O). I think the sync=1 flag only > matters for buffered I/O. I really shouldn't be setting that flag at > all. It's substantially different from direct=1. O_DIRECT just bypasses the kernel's caches. O_SYNC flushes the file data and filesystem metadata, and kills the device caches and queues. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
