Man Linux: Main Page and Category List


       pt_util - Load or dump a Protection Server database


          [-w] [-user] [-group]
          [-members] [-name] [-system]
          [-xtra] [-prdb <prdb file>]
          [-datafile <data file>] [-help]


       The pt_util command can be used to load or dump the protection
       database.  It should only be used when ptserver is not running.

       The most likely reason to use it is to initialize the protection
       database when bringing up a new cell.  The current syntax for this,
       presented below, needs improvement.  pt_util can also be used when
       problems are suspected with the database.  It can be used to dump the
       database or portions thereof, in several different ways, and to reload

       The textual representation of the database has the following form: For

           name flags/quota viceid ownerid creatorid

       For groups,

           name flags/quota viceid ownerid creatorid
            a-username a-user-viceid

       The second line is repeated for each member of the group.  When reading
       the database, membership is not reported unless -members is also


       If you don’t specify any options, the only thing you’ll learn is the
       ubik database epoch and version.

       -w  Write to the protection database instead of reading.  Only the file
           arguments make sense in combination with this argument.

           When reading, display users.

           When reading, display groups (but not necessarily members).

           When reading, display groups and also group members.

           When reading, follow name hashes, instead of id hashes.  This may
           print different information if the database was corrupted.
           Otherwise, it should print exactly the same information, except in
           a different order.

           When reading, display system data, or more precisely, do not
           display entries with a viced <= -32768 or >= +97537.

           When reading, display extra users and groups, or more precisely, do
           not display entries that are in the range -32767...+97536

       -prdb <prdb file>
           Specifies the complete pathname of the file in which the Protection
           Database resides.  Provide the complete name, including the ending

       -datafile <data file>
           Specify the file to which to dump (or -w from which to read)
           textual database records.


       The file dump format does not include supergroup information, so should
       not be used if you have and are using groups within groups.

       In all cases, entry timestamps and other information is also not

       The epoch and version are reported on standard error.  On little-endian
       machines, they’ll be byte swapped, so may be very random.


       The following example shows how to initialize the database from

       Before you do this, make sure ptserver is not running.  If you have
       multiple database servers, make sure prdb.* does not exist on any
       server machine.

       Now, type this in EXACTLY, including the leading space on the line
       indicated.  But do use Control-D at the end, not up-arrow D.

           pt_util -w
           admin 128/20 1 -204 -204
           system:administrators 130/20 -204 -204 -204
            admin 1

       You will see this:

           # pt_util -w
           pt_util: /var/lib/openafs/db/prdb.DB0: Bad UBIK_MAGIC. Is 0 should be 354545
           Ubik Version is: 2.0
           admin 128/20 1 -204 -204
           system:administrators 130/20 -204 -204 -204
           Error while creating system:administrators: Entry for id already exists
            admin 1
           pt_util: Ubik Version number changed during execution.
           Old Version = 2.0, new version = 33554432.0

       To make a complete copy of the database,

           # pt_util -user -members -datafile /tmp/out

       To load from the complete copy,

           # pt_util -w -datafile /tmp/out

       Don’t do this until you read cautions, above.


       The issuer must be logged in as the superuser "root" on a file server
       machine to use pt_util.


       prdb.DB0(5), ptserver(8)


       The following copyright covers this documentation:

       Copyright (c) 2005 The Regents of the University of Michigan.  ALL

       Permission is granted to use, copy, create derivative works and
       redistribute this software and such derivative works for any purpose,
       so long as the name of the University of Michigan is not used in any
       advertising or publicity pertaining to the use or distribution of this
       software without specific, written prior authorization.  If the above
       copyright notice or any other identification of the University of
       Michigan is included in any copy of any portion of this software, then
       the disclaimer below must also be included.

       This software is provided as is, without representation from the
       University of Michigan as to its fitness for any purpose, and without
       warranty by the University of Michigan of any kind, either express or
       implied, including without limitation the implied warranties of
       merchantability and fitness for a particular purpose.  The regents of
       the University of Michigan shall not be liable for any damages,
       including special, indirect, incidental, or consequential damages, with
       respect to any claim arising out of or in connection with the use of
       the software, even if it has been or is hereafter advised of the
       possibility of such damages.