On Apr 5, 2009, at 8:44 AM, admbackup wrote:
Well it is a daily backup and it has been worked correctly since two weeks ago. And all the paths and the drives of the library are online
Then you have a clear-cut case of something having changed, which facilitates your pursuit. Find the point when it last operated correctly and from there look forward in your Activity Log for issues with the mount point shown in 'Query SEssion Format=Detailed', which is your key information for uncovering what the problem is. Also employ the 'SHow LIBRary' command to report the status of the library, to possibly reveal additional issues. You don't indicate any problem with other client use of that TSM server, so see if ordinary Backup/Client activity can make use of the same device class and drives. If not, go to the operating system level on the involved TSM server and see if you can get a tape to mount via OS command (for example, mtlib, or whatever library command is appropriate to your hardware type). Assure that the library device driver hasn't changed, which could prevent proper communication with the library. Look in your OS error log for indications of problems. Physically inspect the drives and library to assure that all is in fully operational order. If a SCSI type library, check the Elements addresses to assure that nothing went wrong. If there was an OS restart, the order of addressing just might have changed. (You have all the details there; we have none.) Richard Sims
