"Man-wai Chang ToDie (33.6k)" <toylet.toylet******.com> wrote in message
news:484a6c3a$1@127.0.0.1...
>
> Which linux file system would checksum every cluster
> it writes onto the disk (thus allowing you to
> verify the saved data easily)?

Do you mean in addition to the ECC done by the disk drive which works on all
the common file systems?

You can set a read after write verification check on some file systems but
that only checks that the data in the system buffer is written correctly,
not that the application has written the data correctly.

If the data is really critical a read after write check by the application
is what is needed.
Be sure to flush the cache before the verify or you will just check the
contents of RAM and not what's on the disk.

Consider a database to store the data, they tend to be able to handle errors
and checking better.

What is the application?