Mike Chirico wrote:

> Loopback is not new, but ACL was recently added to the Linux kernel, and b
y
> using a loopback device it gives someone the opportunity to experiment wit
h
> ACL. The old RWX way is cumbersome [ chmod 2775 file ].  This is a way
 to
> test old programs, programs that may depend on setting the effective UID o
f
> the file.

There is an ACL patch for 2.4 for some time now, and it's pretty
wide-spread AFAIK.

> Reiserfs 4 is certainly new, which is demonstrated.
>
> If you wanted to take an in-depth look at the Reiserfs4 in the next 5
> minutes, how would you do it? Mount a file as a loopback device is the
> quickest way to start. That way you can read the code and experiment with
> Reiserfs4 or any filesystem.

I know, but this still doesn't make loopback somthing new.



Igmar

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