Wanda / IBM,

This is an opportunity for an enhancement.  I've been bit by that
situation also.

The problem is that an export is a single transaction.  Either it fails or
it succeeds.  As I write this I'm holding my breath hoping that the last
100 GB of the current  _3.7 TB_  export complete without a problem.  It
has been running for eight days now and has survived two "dropped tape"
events by our 3583 LTO and is currently writing DLT # 64 in our HP 4/40.

What I would like to see is for the export process to be able to resume at
the end of the last completely filled tape.  I don't care if it has to
throw away a partially filled tape.  I do care if it has to throw away 64
- or more - full tapes.

As servers and data stores get larger, it just isn't practical to cancel a
process running days or weeks because of a single tape I/O failure.

Just a suggestion.

Tab Trepagnier
TSM Administrator
Laitram, L.L.C.







"Prather, Wanda" <Wanda.Prather AT JHUAPL DOT EDU>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
08/26/2004 01:24 PM
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Re: Export quesion


You will have to start the EXPORT from the beginning.

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Robert Ouzen
Sent: Wednesday, August 25, 2004 5:53 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Export quesion


Hi to all

Today I ran  an export command of a few nodes and during the process after
a
few hours I had an error command in one cartridge (DLT8000) couldn't be
read
successfully and the process was abandonded:

08/25/2004 15:44:57      ANR8944E Hardware or media error on drive SRV4
(/dev/mt4)
                          (OP=LOCATE, Error Number=5, CC=306, KEY=03,
ASC=11,
                          ASCQ=00,
SENSE=F0.00.03.00.00.00.BA.16.00.00.F3.38.11.00-
                          .00.00.00.00.81.0D.90.00.00.44.B6.00.5D.47.6D.,
                          Description=Drive or media failure).  Refer to
Appendix D
                          in the 'Messages' manual for recommended action.
                          (SESSION: 3305, PROCESS: 210)
08/25/2004 15:44:57      ANR8359E Media fault detected on DLT volume
000090
in
                          drive SRV4 (/dev/mt4) of library SCALAR.
(SESSION:
3305,
                          PROCESS: 210)
08/25/2004 15:45:15      ANR0986I Process 210 for EXPORT NODE running in
the
                          BACKGROUND processed 504589 items for a total of
                          24,126,583,819 bytes with a completion state of
FAILURE
                          at 15:45:15. (SESSION: 3305, PROCESS: 210)

My question is did I need to run the process from the beginning or can I
continue from where it was abandonded after fixing the problem on the
damage
volume (move data...).

Thanks in advance .....

Regards Robert Ouzen
E-mail: rouzen AT univ.haifa.ac DOT il





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