Re: Disk (block) write strangeness

[Alan Cox]

On Mon, 2002-08-05 at 19:49, Jakob Oestergaard wrote:
> *) Either the disk writes backwards  (no I don't believe that)
> *) Or the kernel is writing 256 B blocks (AFAIK it can't)
> *) The disk has some internal magic that cause a power-loss during
>    a full block write to leave the first half of the block intact with
>    old data, and update the second half of a block correctly with new
>    data.  (And I don't believe that either).

You forgot to add

*) or the disk internal logic bears no resemblance to the antiquated API
it fakes for the convenience of interface hardware and software

Linux also won't neccessarily do write outs in order.