problem with date, dump or restore

[Ivan Dimitrov]

Hi list,

with freebsd 7.0, after a probably successful dump :
#dump -0Lauf ./ad0s1f.dump /dev/ad0s1f
  DUMP: Date of this level 0 dump: Thu Feb  5 07:18:58 2009
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping snapshot of /dev/ad0s1f (/usr) to ./ad0s1f.dump
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 3021548 tape blocks.
  DUMP: dumping (Pass III) [directories]
  DUMP: dumping (Pass IV) [regular files]
  DUMP: 16.92% done, finished in 0:24 at Thu Feb  5 07:48:39 2009
  DUMP: 39.28% done, finished in 0:15 at Thu Feb  5 07:44:33 2009
  DUMP: 62.36% done, finished in 0:09 at Thu Feb  5 07:43:09 2009
  DUMP: 93.06% done, finished in 0:01 at Thu Feb  5 07:40:35 2009
  DUMP: DUMP: 3024998 tape blocks on 1 volume
  DUMP: finished in 1271 seconds, throughput 2380 KBytes/sec
  DUMP: level 0 dump on Thu Feb  5 07:18:58 2009
  DUMP: Closing ./ad0s1f.dump
  DUMP: DUMP IS DONE

the restore reports that
1)   "Header with wrong dumpdate."
2)   "expected next file 141455, got 146"

# restore -rf /storage/backup/ad0s1f.dump
Header with wrong dumpdate.
expected next file 141455, got 146


and this is the same for all slices (except the numbers in the second line)

so where/what is the problem ? Does anyone know what, exactly, this means?

thanks
Ivan