dismount time out issue

[TechyG]

Hi Did any one see the following error?

Latest backup failure log for netbackup for NDMP backup.
Two NDMP backups fro two devices to the SL8500.

2013/09/02 03:25:53 AM - Info bptm(pid=16193) media id MZ0604 mounted on drive index 7, drivepath c1152t0l0, drivename Drive_45.1.2.2.1.1_LTO5_ACS, copy 1
2013/09/02 03:25:53 AM - positioned MZ0604; position time: 00:00:04
2013/09/02 03:25:53 AM - begin writing
2013/09/02 10:58:36 AM - end writing; write time: 07:32:43
2013/09/02 10:58:39 AM - Error ndmpagent(pid=16192) MOVER_HALTED media write error - reason = 5 (NDMP_MOVER_HALT_MEDIA_ERROR)
2013/09/02 10:58:39 AM - Error ndmpagent(pid=16192) zamdc14104: Medium error
2013/09/02 10:58:40 AM - Warning ndmpagent(pid=16192) zamdc14104: Write failed on archive volume 1
2013/09/02 10:58:40 AM - Info ndmpagent(pid=16192) zamdc14104: server_archive: emctar vol 1, 8435491 files, 0 bytes read, 6354840911872 bytes written
2013/09/02 10:58:40 AM - Error ndmpagent(pid=16192) NDMP backup failed, path = /root_vdm_6/fs_groups/data
2013/09/02 10:58:40 AM - Error bptm(pid=16193) cannot write image to media id MZ0604, drive index 7
2013/09/02 10:58:40 AM - Error bptm(pid=16193) io_ioctl_ndmp (MTBSF) failed on media id MZ0604, drive index 7, return code 7 (NDMP_IO_ERR) (bptm.c.8770)
2013/09/02 10:58:45 AM - Info bptm(pid=16193) EXITING with status 84 <----------


2013/09/01 07:14:18 PM - Info ndmpagent(pid=5694) PFASTO0760: DUMP: Sun Sep 1 19:14:14 2013 : We have written 7452861063 KB.
2013/09/01 07:19:17 PM - Info ndmpagent(pid=5694) PFASTO0760: DUMP: Sun Sep 1 19:19:14 2013 : We have written 7477762821 KB.
2013/09/01 07:22:58 PM - end writing; write time: 05:14:47
2013/09/01 07:23:02 PM - Info ndmpagent(pid=5694) PFASTO0760: MOVER: signaling backup EOW at 7683648323584 (117243169 records)
2013/09/01 07:23:02 PM - Error bptm(pid=5695) io_ioctl_ndmp (MTWEOF) failed on media id MZ0001, drive index 5, return code 6 (NDMP_DEV_NOT_OPEN_ERR) (bptm.c.20210)
2013/09/01 07:23:02 PM - Error ndmpagent(pid=5694) NDMP backup failed, path = /vol/zamdh03101_home_mtc
2013/09/01 07:23:02 PM - Info ndmpagent(pid=5694) PFASTO0760: DUMP: DUMP IS ABORTED
2013/09/01 07:23:03 PM - Info ndmpagent(pid=5694) PFASTO0760: DUMP: Deleting "/vol/zamdh03101_home_mtc/../snapshot_for_backup.30" snapshot.
2013/09/01 07:23:08 PM - Error ndmpagent(pid=5694) PFASTO0760: DATA: Backup terminated (for /vol/zamdh03101_home_mtc).
2013/09/01 07:23:08 PM - Info ndmpagent(pid=0) done
media write error(84)