Re: why adsm marks my tape full?

A volume gets marked as full when the physical end-of-volume is
reached.  The Estimated Capacity gets set to the total amount had ADSM
put on that volume; in the case of your DLT007 that was 30 GB.  The
%Util is the amount of valid _unexpired_ data remaining on that volume
divided by that est-cap.  In your case 10 GB of data has expired from
the 30 GB laid down in the time it took to fill that volume.

As to why you are only getting 30 GB vs. 35 GB...does your DLT have the
density/compression LEDs?  Can you see what they indicate when ADSM is
writing to them?  Try creating a temporary stgpool with a new devclass
that has format=35C; do a move data from several of these volumes to
this new stgpool.  See if you can get more than 30 GB in that case.

Cheers...
Bruce

Yu Chen wrote:
>
> hi adsmers,
>
> is there anyone out the experienced the same thing: i just noticed that
> sometimes adsm changes a filling tape to status full even tho' the tape
> still got plennnnnnnty of room to put data in. to be more specific, before
> i did a "move data dlt009" i had:
>
> adsm> q vol dlt*
>
> Volume Name                  Storage         Device         Estimated     
> %Util      Volume
>                              Pool Name       Class Name      Capacity         
>        Status
>                                                                  (MB)
> ------------------------     -----------     ----------     ---------     
> -----     --------
> DLT001                       DLT-LIBRARY     DLT-AUTO        27,578.4      
> 58.8       Full
> ...
> DLT007                       DLT-LIBRARY     DLT-AUTO        35,840.0      
> 50.9     Filling
> DLT008                       DLT-LIBRARY     DLT-AUTO        35,840.0       
> 6.7     Filling
> DLT009                       DLT-LIBRARY     DLT-AUTO        35,840.0       
> 3.8     Filling
> ...
>
> it then moved data off dlt009 to dlt007. but now i have:
>
> adsm> q vol dlt*
>
> Volume Name                  Storage         Device         Estimated     
> %Util      Volume
>                              Pool Name       Class Name      Capacity         
>        Status
>                                                                  (MB)
> ------------------------     -----------     ----------     ---------     
> -----     --------
> DLT001                       DLT-LIBRARY     DLT-AUTO        27,578.4      
> 58.8       Full
> ...
> DLT007                       DLT-LIBRARY     DLT-AUTO        30,399.7      
> 64.2       Full
> DLT008                       DLT-LIBRARY     DLT-AUTO        35,840.0       
> 7.4     Filling
> DLT009                       DLT-LIBRARY     DLT-AUTO             0.0       
> 0.0      Empty
> ...
>
> also, i don't seemed to be able to utilize the whole tape, the estimated
> full capacity is 35G but it got marked full somewhere around 30G. my
> devclass of dlt's definition is -format=drive.
>
> thanks.
>
> yu chen
>
> -- The Lost Patrol. Level 30~36, HP 800, AC -2. The Highway Patrol of
>    The Random Road, They Keep The Peace, They Eat Donuts.    -TRR '97