I have had this problems numerous times with several levels of TSM.  Once it
was because TSM had a reclaim process for that volume pending (somewhere), that
could not get canceled.  I was at 4.1.X at that time, and a restart of TSM
fixed it.  I just had the problem when I upgraded to 4.2.3, and a update v xx
acc=readw fixed that one.  The tape shows available, readw, and in the
library checked in at the time.  I restarted the backup stg, and it took right
off.

good luck.

bob

On Tue, Nov 05, 2002 at 03:29:15PM -0500, David E Ehresman wrote:
> I'm getting "ANR1229W Volume 700270 cannot be backed up - volume is
> offline or access mode is "unavailable" or "destroyed" " messages for a
> volume.  A "q libvol 3494 700270"  reports the volume is in the library.
>  A "q vol 700270 f=d" reports access=read/write and status=filling.  The
> tape is not already mounted on a drive when the error occus.  So in what
> sense is this tape unavailable or destroyed and how do I convince TSM to
> use the tape.
>
> David