Re: Determine how many used and free blocks in an extent.

There is a script (last updated Nov 2000) on my website that gets you part way. But there is no way you can find out about the contiguity of free blocks
(at least not the ones below the HWM) as you have
to walk every freelist to find all the free blocks, then sort them into physical order. It is possible, of course, but not realistic

Check the Miscellaneous menu, then search for "free space"

Regards

Jonathan Lewis
http://www.jlcomp.demon.co.uk

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