I did not read the entire thread, so my remark may be totally inapplicable, but what you describe (all extents on all volumes are created at allocation time) applies only if you specify Guaranteed Space? Then this is exactly what Guaranteed Space is intended for.
Kees. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of DEBERT Jean-Louis Sent: Tuesday, November 13, 2012 10:39 To: [email protected] Subject: Re: multi-volume SMS file allocation Greg Shirey wrote: <snip> It's actually VOLUME COUNT in the DATACLAS definition. From the (1.12) HELP panel: Use the VOLUME COUNT field to specify the maximum number of volumes you expect to use to store a data set in this Data Class. For example, to reserve five volumes per data set, specify: Volume Count . . . . . . 5 (1 to 255 or blank) <end snip> Very well ... it still doesn't behave like what was said on this thread (that unused primary extents would not be allocated at all). One primary extent for each volume in the volume count is allocated at allocation time (before ever writing the file). Then, at close time, RLSE will purge unused space on the last USED extent (the one active at close time) but not on possible further (unused) extents. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
