[SunHELP] ufsdump error kindly help.....

[Sree]

Hello dear friends,
Can anybody help me to solve this problem,  the file mentioned  is of 3gb
(data.Nov-23-2001.tar.Z) when i tried to physically ufsdump to my dds tape it
threw this error, where as when i tried to dump files of lesser size say 7
different files of 15mb it does the work perfectly.
Failed Process
[root at pluto /xxx/xxxx/backup] ufsdump 0ucvf /dev/rmt/1n
data.Nov-23-2001.tar.Z
  DUMP: Writing 63 Kilobyte records
  DUMP: Date of this level 0 dump: Mon Dec 10 14:06:58 2001
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/md/rdsk/d10 (saturn:/u01) to /dev/rmt/1n.
  DUMP: Mapping (Pass I) [regular files]
  DUMP: Cannot find filesystem mount point for `data.Nov-23-2001.tar.Z'
  DUMP: The ENTIRE dump is aborted

Passed Process
[root at pluto/xxx/xxxx/backup] ufsdump 9ucvf /dev/rmt/1 dat_Nov-24-01.tar.Z
dat_Nov-25-01.tar.Z  dat_Nov-26-01.tar.Z
  DUMP: Writing 63 Kilobyte records
  DUMP: Date of this level 0 dump: Mon Dec 10 14:21:32 2001
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/md/rdsk/d10 (saturn:/u01) to /dev/rmt/1.
  DUMP: Mapping (Pass I) [regular files]
  DUMP: Mapping (Pass II) [directories]
  DUMP: Estimated 828328 blocks (404.46MB).
  DUMP: Dumping (Pass III) [directories]
  DUMP: Dumping (Pass IV) [regular files]
  DUMP: Tape rewinding
  DUMP: Finished writing last dump volume
  DUMP: Starting verify pass
  DUMP: 30.16% done, finished in 0:05
This issue started shortly after upgrading our machine to solaris 8

help required..... Please provide a suggestion to solve this problem....

Rgds.....Sree