problem with dump/restore across filesystems

[Gordon Vickers]

    To aid in the speady customization of Ultrix2.0, prior to 
 doing the installation, I decided to free up an RA80 for awhile
 and just backup my system disk by copying one filesystem to another.

    For some reason, my backup filesystems are about 10Mbytes larger
 than the originals.  Prior to doing the backup, I used 'newfs' and
 then 'df' to verify that the new filesystem was empty (except for
 an empty lost+found directory).

    Seems that the backup filesystems contain partial referances to
 files that have been deleted. Anyone know how I can circumvent this
 problem without using tape and why I am having the problem ?

    The backups were made using the all familiar, straight from the
 book (restore(1) example) :
       dump 0f - /usr | ( cd /v12/usr; restore xf -)

    I am running Ultrix 1.2 on an VAX 11/750 .  I was the only user and
  in multiuser mode and operating as root.

Here is what I ended up with ( df(1) ): 
Filesystem    total    kbytes  kbytes  percent inodes  inodes percent
   node       kbytes    used    free   used     used    free   used  Mounted on
/dev/ra0g      40095   27210    8875    75%     3756    2900    56%  /a
/dev/ra1g      40156   36424       0   101%     3755    1621    70%  /A

/dev/ra0d      60335   39165   15136    72%     4854    2890    63%  /usr
/dev/ra1h      51860   49804       0   107%     4854    1290    79%  /v12/usr

using du(1) :
|--- /usr               |--- /v12/usr
v                       V
8	./lost+found	8
1	./adm/crash	4
181	./adm/old	212
2	./adm/bin/data	8
29	./adm/bin	44
28	./adm/lib	32
580	./adm		644
2653	./bin		2832
29	./dict/papers	40

ls -al /usr/adm/crash :
total 2
drwxrwxr-x  2 root          512 Dec  9 14:34 .
drwxrwxr-x  6 root         1024 Dec 11 15:26 ..

ls -al /v12/usr/adm/crash :
total 8
drwxrwxr-x  2 root          512 Dec  9 14:34 .
drwxrwxr-x  6 root         1024 Dec 11 15:26 ..

  Similar findings found for each of the other directories.

  Using the public domain utility xod to inspect the directory file
 proper shows that the directories restored contains entries to deleted
 files.

Dump: /usr/adm
Offset:    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f   0123456789abcdef
00000000: c0 02 00 00 0c 00 01 00 2e 00 00 00 02 00 00 00 | ................ |
00000010: 0c 00 02 00 2e 2e 00 00 80 05 00 00 10 00 05 00 | ................ |
00000020: 63 72 61 73 68 00 6f 75 c1 02 00 00 10 00 04 00 | crash.ou........ |
00000030: 61 63 63 74 00 00 6f 75 c2 02 00 00 10 00 06 00 | acct..ou........ |
00000040: 61 63 75 6c 6f 67 00 75 c3 02 00 00 10 00 07 00 | aculog.u........ |
00000050: 6c 61 73 74 6c 6f 67 00 c4 02 00 00 14 00 08 00 | lastlog......... |
00000060: 6d 65 73 73 61 67 65 73 00 64 00 00 c5 02 00 00 | messages.d...... |
00000070: 10 00 07 00 6c 70 32 61 63 63 74 00 c6 02 00 00 | ....lp2acct..... |
00000080: 10 00 06 00 6d 73 67 62 75 66 00 00 c7 02 00 00 | ....msgbuf...... |

Dump: /v12/usr/adm
Offset:    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f   0123456789abcdef
00000000: 80 01 00 00 0c 00 01 00 2e 00 00 00 02 00 00 00 | ................ |
00000010: 0c 00 02 00 2e 2e 00 00 00 03 00 00 10 00 05 00 | ................ |
00000020: 63 72 61 73 68 00 6f 75 80 04 00 00 0c 00 03 00 | crash.ou........ |
00000030: 6f 6c 64 00 00 06 00 00 0c 00 03 00 62 69 6e 00 | old.........bin. |
00000040: 00 09 00 00 0c 00 03 00 6c 69 62 00 8a 01 00 00 | ........lib..... |
00000050: 10 00 04 00 61 63 63 74 00 66 2e 73 8b 01 00 00 | ....acct.f.s.... |
00000060: 10 00 06 00 61 63 75 6c 6f 67 00 73 8c 01 00 00 | ....aculog.s.... |
00000070: 10 00 07 00 6c 61 73 74 6c 6f 67 00 8d 01 00 00 | ....lastlog..... |
00000080: 14 00 08 00 6d 65 73 73 61 67 65 73 00 64 61 74 | ....messages.dat |

  What's going on here ?  I haven't noticed this problem when using tape.

  Thank you very much for any assistance.
 
 Gordon P. Vickers, (408) 991-5370, Signetics Corp. PO Box 3409  M/S 69 
 Sunnyvale, California,  USA  94086
 {pyramid, philabs}!prls!gordon
 "Of all the things I haven't got, I like gold the best"
                             - Elmer Fudd in _The_Wacky_Wabbit_