In addition to the 1MB of overhead, I think you have to round down to make the file small enough to fit into the partition size.
On Wed, 21 Nov 2001, Malbrough, Demetrius wrote: > 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. > ********************************************************************** >
