On 2/21/2011 11:30 PM, Roberto Spadim wrote: > it can't because today filesystem (exclude ext4 and swap) don't use > trim command to tell device what block isn't in use You aren't getting it. The fs can tell the drive all it wants: the drive does not care. It has nothing useful it can do with that information. -- 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