i think it have. ssd have, why not hd? hd can implement a inteligent layer to speedup writes/reads without telling to fs 2011/2/22 Phillip Susi <psusi@xxxxxxxxxx>: > 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 > -- Roberto Spadim Spadim Technology / SPAEmpresarial -- 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