a gzipped file restores to a different size..

The client does not compress data during backup. However, we run the
3590's on our server with compression enabled.

The serverlevel (AIX) back in february was 2.1.5.15, today, when the
restore "failed", we're at 3.1.2.0.

The client was, and still is 2.1.0.5. (IRIX) (We are at bit down-level in
IRIX, but I can't see how this cound make a difference here..)

Anyone seen this or similar restore-errors before?

Details below.. (sorry if it's a bit messy..):


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During some testing on an IRIX-client I run into the following..:
During some testing on an IRIX-client I run into the following..:

The file figur2.sho.gz was backed up in february this year:

dsmc q backup ...... reports:

    Size      Backup Date
    ----      -----------
  98,767  02/15/1998 02:13:06 <looong path truncated..>figur2.sho.gz

The file is still on the client's disk and has not changed:

ls -al reports:

-rw-r--r--    1 alyngsta medstud    98767 Sep 28  1997 ........
However, dsmc restore ....:
However, dsmc restore ....:

Restoring       98,767 <long path...>/figur2.sho.gz -->
/disk.18GB/tmp/figur2.sho_orig.gz ... Done

Restore processing finished.

Total number of objects restored:         1
Total number of bytes transferred:     84.9 KB
Data transfer rate:                  146.39 KB/sec
---------------------------
And, ls -al reports on the recovered file:
And, ls -al reports on the recovered file:

-rw-r--r--    1 alyngsta meds    86935 Sep 28  1997 ...figur2.sho_orig.gz
The recovered file is smaller than the original, and therefore, different:
The recovered file is smaller than the original, and therefore, different:

# diff figur2.sho.gz figur2.sho_orig.gz
  Binary files figur2.sho.gz and figur2.sho_orig.gz differ


Then, gunzip -l :

cama07# gunzip -l figur2.sho.gz                (the original)
compressed  uncompr. ratio uncompressed_name
    98767  12406384  99.2% figur2.sho
cama07# gunzip -l figur2.sho_orig.gz           (the restored one)
compressed  uncompr. ratio uncompressed_name
    86935  12406384  99.3% figur2.sho_orig

unzipped, the files are identical..


I made a new backup-copy of the original file today, and this backup-copy
restores correctly..

(the restores are from tape in both cases...)

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