ADSM-L

Strange filesize after export/import

2006-07-28 02:21:48
Subject: Strange filesize after export/import
From: Andreas Priebe <andreas.priebe AT PROMOS-CONSULT DOT DE>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 28 Jul 2006 08:20:14 +0200
Hi,

we are just testing the migration of a TSM 5.1.9.5 (AIX 4.3)
to a TSM 5.2.7.2 (AIX 5.2).
So far everything seems OK, policies and data were exported and
imported just fine, but I noticed a discrepancy in the file sizes
shown in a select from contents for ALL files (data are from a ContenManager)!
This is an example:

On the old TSM

tsm: ECKWAND>select * from contents where file_name='/MC_ARCHIV_PO4_1/ 
MC_ARCHIV_PO4_1AKKDBJHB.DMD'

      VOLUME_NAME: /tivoli1/stgpool/archiv_po4_1_file01
        NODE_NAME: ARCHIV_PO
             TYPE: Bkup
   FILESPACE_NAME: /OBJRZ/FRN/ADSM/192.168.126.134/MC_ARCHIV_PO4_1
        FILE_NAME: /MC_ARCHIV_PO4_1/ MC_ARCHIV_PO4_1AKKDBJHB.DMD
       AGGREGATED: No
        FILE_SIZE: 56210
          SEGMENT:
           CACHED: No
     FILESPACE_ID: 6
FILESPACE_HEXNAME:
     FILE_HEXNAME:

After the import on the new TSM:

tsm: TEST-KANDEL>select * from contents where file_name='/MC_ARCHIV_PO4_1/ 
MC_ARCHIV_PO4_1AKKDBJHB.DMD'

      VOLUME_NAME: /usr/local/tsm/server2/data/apo4_01
        NODE_NAME: ARCHIV_PO
             TYPE: Bkup
   FILESPACE_NAME: /OBJRZ/FRN/ADSM/192.168.126.134/MC_ARCHIV_PO4_1
        FILE_NAME: /MC_ARCHIV_PO4_1/ MC_ARCHIV_PO4_1AKKDBJHB.DMD
       AGGREGATED: 124/256
        FILE_SIZE: 11195180
          SEGMENT:
           CACHED: No
     FILESPACE_ID: 1
FILESPACE_HEXNAME:
     FILE_HEXNAME:

Note the difference in FILE_SIZE: 56210 vs. 11195180! This seems strange!
And what does the difference in the field AGGREGATED mean (No vs. 124/256)?

Interestingly enough, I can restore the object from the new TSM and inspect
it in a viewer (it's a TIFF) just fine.
The dsmc query shows it as:

tsm> query  backup 
"/OBJRZ/FRN/ADSM/192.168.126.134/MC_ARCHIV_PO4_1//MC_ARCHIV_PO4_1/MC_ARCHIV_PO4_1AKKDBJHB.DMD"
             Size      Backup Date        Mgmt Class A/I File
             ----      -----------        ---------- --- ----
API     55,858  B  03/25/01   00:11:12    MC_ARCHIV_  A  
/OBJRZ/FRN/ADSM/192.168.126.134/MC_ARCHIV_PO4_1/MC_ARCHIV_PO4_1/MC_ARCHIV_PO4_1AKKDBJHB.DMD

Another thing is puzzeling me: the blank in the filename in the "select", which 
is not
appearing in the "query backup" result.

Any hints?

TIA

Andreas

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