ADSM-L

Re: del filesp with +10Mio files

2006-08-21 11:18:17
Subject: Re: del filesp with +10Mio files
From: "Loon, E.J. van - SPLXM" <Eric-van.Loon AT KLM DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Mon, 21 Aug 2006 16:21:57 +0200
Hi Peter!
A delete volume runs as fast (or as slow) as a delete filespace. Actually, it 
does the very same thing: delete every single object from the database one by 
one.
If the node had it's own tapes, you could mark all it's tapes in both the 
primary pool and the copy pool destroyed and let do the expire inventory do the 
work for you...
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Peter Duempert
Sent: maandag 21 augustus 2006 15:03
To: ADSM-L AT VM.MARIST DOT EDU
Subject: del filesp with +10Mio files

Hi TSM'ers
   on the following system I'm faced to delete ca. 15 filespaces holding a 
total of ca. 30 Mio files.

HW:     IBM H70, 2GB, SSA + SAN disks
OS:     AIX 5.3 ML 04
TSM:    5.3.3, 60 GB DB on SSA & mirrored on SAN, 2 GB LOG ( SSA + SAN)

Doing individual
        del filesp node file_space_name
will take days/weeks/months(?) (the biggest filespace owns ca. 19 Mio files).

The filespaces are all on collocated nodes, i.e. I could even do:

        1.      Determine the volumes for nodes' data

        2. Either
                create backupsets of the nodes data to be kept, just
                to keep the current state
           or
                run a selective backup with a different MGMT-class,
                sending the data to a different set of tapes

        3.      run "del vol <volid> discard=yes" for all the volumes
                belonging to the node

        4.      proceed as normal after having finished

Questions:
----------
Q1.     Is the sequence of steps 1. - 4. faster than the individual
                "del filesp node filespace_name"

Q2.     Any idea to do it even faster ?

-- 
MfG / Ciao         - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Peter Dümpert                                   Email: p.duempert AT tu-bs DOT 
de
Rechenzentrum der Technischen Universität       Fax  : ++49/531/391-5549
D 38092 Braunschweig                            Tel  : ++49/531/391-5535


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