I pretty sure that for DRCT there is no Q ALLOC command option that looks at the pages in use, it only looks at cylinders in use. Cylinders in use is easily found by reading the Allocation byte map in cylinder 0: I'm not 100% sure but x40 might stand for a free DCRT cylinder, while xC0 is a DRCT cylinder in use. The DIRECTXA command uses these values to see where it can write the new object directory)
For PAGE & SPOOL the story in different, the original Q ALLOC command counted the in use based on cylinders with at least some usage, with the new MAP option, the usage is based on pages, hence more acccurate. 2007/9/21, Jim Bohnsack <[EMAIL PROTECTED]>: > > I was going to reply to this earlier but didn't remember all the facts. > Mike reminded me of some of it. This was discussed on the list a year or > 3 ago. Mike is right about cylinders being partially filled and that > will show a cylinder as being used whether it has 1 page on it or is > completely full. It seems to me that the response from one query command > will show the number of cylinders with "anything" on them regardless how > full and the response from another query command shows the percent of > pages in the direct area that are filled. I don't remember which > commands however. They must be QUERY ALLOC with MAP or DRCT, unless > there is another QUERY command. > > Jim -- Kris Buelens, IBM Belgium, VM customer support
