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To: current@freebsd.org
Subject: problems dumping large fs's?
X-Real-Name: Faried Nawaz
X-Address: Box 3582, Moscow, Id 83843-1914
X-Phone: 1 (208) 882 8896
Date: Sat, 15 Jul 1995 04:20:06 -0700
From: Faried Nawaz <fn@pain.csrv.uidaho.edu>
Sender: current-owner@freebsd.org
Precedence: bulk


hi,

i'm having problems dumping part of my /usr onto tape. 
/usr is local, ufs, and on an 850mb ide drive.

big-brother: {1} df -k
Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
/dev/wd0a       31775    13808    15425    47%    /
/dev/wd0s1e     15391     6336     7823    45%    /var
/dev/wd0s1f    695663   396186   243823    62%    /usr
procfs              4        4        0   100%    /proc
kernfs              1        1        0   100%    /kern
big-brother: {2} 

if i try to dump /var, i get

big-brother# dump 0uf /dev/nrst0 /var
  DUMP: Date of this level 0 dump: Sat Jul 15 04:00:38 1995
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/rwd0s1e (/var) to /dev/nrst0
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 6510 tape blocks on 0.17 tape(s).
  DUMP: dumping (Pass III) [directories]
  DUMP: dumping (Pass IV) [regular files]
  DUMP: DUMP: 6500 tape blocks on 1 volumes(s)
  DUMP: level 0 dump on Sat Jul 15 04:00:38 1995
  DUMP: Closing /dev/nrst0
  DUMP: DUMP IS DONE
big-brother# 

i can restore tvf /dev/rst0 fine.

if i try to dump /usr/local, i get

big-brother# dump 0uf /dev/nrst0 /usr/local
  DUMP: Date of this level 0 dump: Sat Jul 15 04:02:37 1995
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /usr/local to /dev/nrst0
  DUMP: bad sblock magic number
  DUMP: The ENTIRE dump is aborted.
big-brother# 

is this a known problem?  this is the first time i've tried dump, btw.
tar and pax appear to operate without problems on /usr.


faried