Notice that the result shown in Figure 2-79 on page 60 is the same, however, because the
candidate volume is not yet known.
You can force the necessary new open of the data set by performing
one of the following
actions:
Perform a double move (set a new owing system and move back the file system to the
original system).
Or, perform a double switch (switch to read-only and then back to read-write).
Afterwards you can successfully add an extension, as shown in Figure 2-80. This is because
the MVS data sets are accessed and opened just as on a normal MOUNT.
Figure 2-80 Successfully extending the aggregate ...
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