[Tutor] Corrupt file(s) likelihood and prevention?

[Alan Gauld]

On 02/02/2020 03:10, David L Neil via Tutor wrote:

> Similarly, the ext4 FS - a popular/common file system under Linux, is a 
> journaling FS. If something goes wrong, one is invited/instructed to run 
>...
> In such an environment, the need to maintain separate/embedded 
> check-sums would appear to have also passed. However, greater minds 
> might have something else to say... and, as always, YMMV!

Checksums are not needed as often with a JFS but there are still
cases where they are useful. The most obvious is a shared file
where a running process needs to know if a file has changed
between accesses due to the action of another program (or user).
Also in a world of pluggable storage, most of which is still
using FAT, checksums are still important. And of course, if the
data is being shipped via a network a checksum is still a
useful integrity check.

-- 
Alan G
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