Paul Gilmartin wrote:
Lately, examining a dump of a tape output from SAS TAPECOPY,
I noticed that the volser in the HDR1 records did not match
the volser in the VOL1 record. OK. IBM doc says this field
is defined but not verified by OPEN/CLOSE processing, etc.
But I'm working on a utility of my own, for complex reasons.
I'd like to do better than SAS. How can I verify the result?
Is there a utility to which I could pass a (putatively)
standard labeled tape, such as that output from SAS TAPECOPY
which would report loud and clear on irregularities such
as the volser mismatch, possible block count errors in trailer
labels, all such?
Bruce Black probably would have known; we all miss him;
I for some volunteer research he did when I asked another
stupid question years ago.
Thanks,
gil
I suspect that Innovations FATS/FATAR would do this,
but we don't have it so I don't know. Leonard Worens
tape map might do this as well. There may be programs
on the CBT tape as well.
The HDR1/VOL1 mismatch is not necessarily a problem.
If this is a multi-volume dataset, the HDR1 has the serial
number of the first volume.
If you want to do this yourself, I think you will need to
open the tape with BLP and read through the tape doing whatever
label checking you want to do. You will need to count the data
blocks between labels to verify the block count, etc.
Richard
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