Hi!
> >>>As my PhD thesis, I am designing and writing a filesystem,
> >>>and it's now in a state that it can be released. You can
> >>>download it from http://artax.karlin.mff.cuni.cz/~mikulas/spadfs/
> >>
> >>"Disk that can atomically write one sector (512 bytes) so that
> >>the sector contains either old or new content in case of crash."
> >
> >New drives will soon use 4096-byte sectors. This is a better
> >match for the normal (non-VAX!) page size and reduces overhead.
>
> The drive (IDE model, SCSI can have larger sector size) will do
> read-modify-write for smaller writes. So there should be no compatibility
> issues. (this possibility is in new ATA standard and there is a way how to
Actually, there are. If you assume powerfail can only destroy 512
bytes... read-modify-write of 4K is going to destroy your "only 512
bytes destroyed" assumption...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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