You can try audit of the various volumes.
Also, if you are using Deduplication, there is a know problem of TSM losing the 
source data on versions prior to 6.3.2.01.
Ray

On Aug 27, 2012, at 9:56 AM, Dan Olson wrote:

> Hi all,
> 
> After a mass restore attempt pulling from 800+ volumes I've got a bunch of 
> files from various volumes showing up with a show damaged, 452 bad bitfiles, 
> of which a whole lot more files impacted.
> 
> Is there a way to tell TSM to retry the reads of the bitfiles?  When I try to 
> move data its not even trying to mount tapes anymore, I assume because there 
> is a bitfile marked bad on some dependent volume.
> 
> ----
> Daniel Murphy-Olson
> Systems Administrator
> Mathematics & Computer Science Division
> Argonne National Laboratory
> 630-252-0055