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genprepundo.pl
Prepare undo file for Clustered Genezzo

genprepundo.pl - Prepare undo file for Clustered Genezzo


NAME

genprepundo.pl - Prepare undo file for Clustered Genezzo


SYNOPSIS

genprepundo.pl [options]

Options:


    -help                      brief help message

    -man                       full documentation

    -gnz_home                  supply a directory for the gnz_home

    -undo_filename             name of the undo file

    -number_of_processes

    -undo_blocks_per_process


OPTIONS

-help

    Print a brief help message and exits.
-man



    Prints the manual page and exits.
-gnz_home



    Supply the location for the gnz_home installation.  If 

    specified, it overrides the GNZ_HOME environment variable.
-undo_filename

    Supply the name of the undo file.  If not specified, it

    defaults to undo.und for file system devices.  It must

    be specified for raw devices.
-number_of_processes

    Specify the maximum number of processes supported by undo.

    If not specified defaults to 256.
-undo_blocks_per_process

    Specify the number of blocks (which list fileno-blockno pairs)

    for a process.  If not specified defaults to 220.


DESCRIPTION


  Creates or re-initializes undo file under GNZ_HOME.  By default

  file is named undo.und.  File header contains basic information about

  all other files in Genezzo installation.  genprepundo.pl must

  be run whenever a new file is added to the Genezzo installation.

  Undo file format is documented in Clustered.pm.


AUTHOR


  Eric Rollins, rollins@acm.org


COPYRIGHT AND LICENSE


  Copyright (c) 2005 Eric Rollins.  All rights reserved.

  This program is free software; you can redistribute it and/or modify

  it under the terms of the GNU General Public License as published by

  the Free Software Foundation; either version 2 of the License, or

  any later version.

  This program is distributed in the hope that it will be useful,

  but WITHOUT ANY WARRANTY; without even the implied warranty of

  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License

  along with this program; if not, write to the Free Software

  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

  Address bug reports and comments to rollins@acm.org
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