tapes not expired automatically in pool name called xyz.
thanks in advance.
If for any reason there is an aborted backup (aborted saveset) on the volume,then the volume will not expire automatically.
mminfo -avot -q "volume=<volume name>" -r "client,name,ssid,ssflags"
check for the ssflags.
Also if for any reason the full backup failed and the incremental backup is in the other volume then then other volume is not going to expire automatically.