In
<CAAJSdjjtFjg-ZTfq7-=vc8zvf7v84vvqyigxpdvheca2trn...@mail.gmail.com>,
on 06/05/2013
   at 09:33 AM, John McKown <[email protected]> said:

>As I understand it, the filesystem knows the last byte written.

What is in the DSCB1 is the last track and record. There is no support
for indicating that part of a block in an FB or FBS data set is
unused.

-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     Atid/2        <http://patriot.net/~shmuel>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

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