It does require a 1MB overhead! e.g. root@ / > dsmfmt -m -data /tsm/stgpool/backup1 200
AIX Server DSMFMT Extent/Volume Formatting Program Licensed Materials - Property of IBM 5697-TSM (C) Copyright IBM Corporation 1990, 1997. All rights reserved. U.S. Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corporation. Allocated space for /tsm/stgpool/backup1: 209715200 bytes Calculation: 200MB X 1024bytes = 204,800 bytes 204,800 bytes X 1024bytes =2.0971520 512-Blocks Thanks, Demetrius -----Original Message----- From: Mike Doneske [mailto:[EMAIL PROTECTED]] Sent: Wednesday, November 21, 2001 10:07 AM To: [EMAIL PROTECTED] Subject: Re: dsmfmt question I just experienced this same problem this weekend when re-defining some disk storage pools. I was using the DEFINE VOLUME command instead of the DSMFMT utility. The command would fail but there would still be 408000 512-byte blocks left in the filesystem. The number of blocks left in the filesystem seemed to be unrelated to the size of the volume I was trying to define as it failed at the same place on different size volumes. I would also be interested in why TSM doesn't use every available block... PAC Brion Arnaud <arnaud.brion@PANA To: [EMAIL PROTECTED] LPINA.COM> cc: Sent by: "ADSM: Subject: Re: dsmfmt question Dist Stor Manager" <[EMAIL PROTECTED] EDU> 11/21/2001 09:31 AM Please respond to "ADSM: Dist Stor Manager" Hi Eric, I re-read "TSM implementation guide" Redbook a couple of minutes ago, and they don't speek about any overhead space for a data volume, what they specify is that if you want to format a db volume, then the allocated file size is always a multiple of 4 MB plus an additional 1 MB for overhead. Something else comes to my mind : when preparing your VG, did'nt you forgot the "large file enable" parameter ? Hope this helped, but probably somebody has a better knowledge than I have .... Cheers. Arnaud -----Original Message----- From: Loon, E.J. van - SPLXM [mailto:[EMAIL PROTECTED]] Sent: Mittwoch, 21. November 2001 15:54 To: [EMAIL PROTECTED] Subject: dsmfmt question Hi *SM-ers! I will replace my 9 Gb. SSA disks in the very near future. The new disks (36 Gb. 10.000 rpm) will have to be added to the diskpool one by one. I remember from the last time that it was quite difficult to allocate a disk file which fills the disk completely. If you have, for instance, a 9 Gb. disk, you cannot create a 9 Gb. file by issuing a DSMFMT -G -DATA filename 9. This results in an error indicating the there isn't enough space available. Apparently the dsmfmt utility needs a little bit overhead space. Does anybody know how to calculate the maximum space one can specify to fill the disk to it's maximum? Thanks in advance for any reply!!! Kindest regards, Eric van Loon KLM Royal Dutch Airlines ********************************************************************** 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. **********************************************************************
