Summary
When performing a backup to disk, the backup generates a series of messages indicating PLEASE MOUNT TAPE" and then errors out. This is visible from within the DPX job log and from within the Job monitor screen. "
Symptoms
This problem originates from an inability to find or use a virtual tape in the disk directory configured with the disk device. Messages similar to the following will be generated:
Attempting mount for node(100.100.100.100) drive(sSYRA001) volser(DSK276)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
OPERATOR AT NODE (BACKUP) PLEASE MOUNT TAPE (DSK276) AT DRIVE sSYRA001 (bu:\diskdev)
(100.100.100.100) drive(disk_dev) volser(dsk276) partition(1) mount rc=(1121)
*** Error mounting dsk276 on device disk_dev001 [status: 1121 (tape mount manager timed out)] ***
Marking device disk_dev001 with device file name bu:\diskdev in device pool dsk_pool as bad in DB to avoid reusing it.
Resolution
To resolve the problem, follow these steps:
- Make sure that the directory exists on the disk directory controller node.
- Check available disk space on the partition where the disk directory resides. DPX may not have enough space to create the virtual tape in the disk directory.
- Verify that the user the cmagent service/process is running has permissions to create files (a virtual tape) in the disk directory.
- Make sure that you are not using the passthrough tape device driver for DPX.